JP2016061527A - Range hood - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a range hood which includes a hood part, which is moved up when in use and moved down when not in use, and has a self inspection function for achieving safety when the hood part is moved down and maintaining the safety with a simple structure.SOLUTION: A range hood 1 includes: a cabinet 10 having a heating cooker 11; a support part 20 which is provided in the cabinet so as to move up or down; a hood part 30 which is supported by a support part, moved up and faces a top plate 12 of the cabinet when in use, and moved down and disposed near the top plate when not in use; and a sensor for detecting an object between the hood part and the top plate. The support part has an optical surface 21 of the sensor in a position in a vicinity of a coupling part 23 coupled to the hood part and where the hood part does not exist in a detection range.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a range hood, and more particularly, to a range hood having a member that moves up and down so that a portion can be stored in a cabinet when not in use.

  Range hoods installed in the kitchen, for example, inhale steam and oily smoke generated by cooking performed with cooking utensils with the flow of air generated by the blower, and after cleaning, the remaining oily smoke with the inhaled air Etc. to the outdoors.

  Conventionally, a range hood that is raised from a cabinet at the time of cooking and stored in the cabinet when not in use after cooking has been known, centering on a dining kitchen and an island kitchen without a partition wall.

  For example, Patent Literature 1 describes a range hood that includes two support columns that can be moved up and down with respect to a cabinet and includes a hood portion that has a suction port and the like over the upper surfaces of the two support columns. This range hood has a hood part that is positioned above the cooking utensil by raising the support during cooking, and sucks oil smoke generated by cooking from the suction port provided in the hood part and exhausts or purifies it outdoors to clean indoors. To discharge. And after cooking is completed, the upper surface of the cooking device is covered with the hood by lowering the support.

Japanese Patent No. 2619471

  However, in such a range hood, when the hood is lowered after cooking, a part of the body or a pan that has been misplaced during cooking is caught between the hood and the cabinet, resulting in injury or damage to objects. There was a fear.

  Therefore, the present invention has been made in view of the above problems, and an object of the present invention is to provide a range hood that rises when the hood portion is in use and descends when the hood portion is not used. An object of the present invention is to provide a range hood having a self-inspection function for ensuring safety and maintaining the safety.

In order to solve the above-mentioned problems, a cabinet having a heating cooker, a support portion provided on the cabinet so as to be movable up and down, supported by the support portion, rises during use and faces the top plate of the cabinet, and is not used. A hood part that is sometimes lowered and arranged in the vicinity of the top board, and a sensor that detects an object between the hood part and the top board, and the support part is in the vicinity of the coupling part with the hood part. A range hood having an optical surface of a sensor at a position where the hood portion does not exist in the detection range is provided.
According to this, the support unit has the sensor in the vicinity of the coupling portion with the hood unit and the hood unit does not exist in the detection range. Therefore, a range hood designed to ensure safety when descending can be provided with a simple configuration. Moreover, since only the minimum detection range is detected only in the vicinity of the coupling portion with the hood portion, the minimum sensor is sufficient, and the cost can be reduced.

Furthermore, the apparatus further includes a self-inspection unit that performs a self-inspection based on the detection result of the sensor. By continuing, it is good also as inspecting that the optical surface of a sensor is dirty.
According to this, when dirt such as oil adheres to the optical surface of the sensor, it is possible to continue to detect the dirt attached to the optical surface of the sensor when the sensor functions in the process of raising the support portion. Therefore, it can be inspected that the optical surface of the sensor is dirty by the sensor continuously detecting in the space through which the hood portion has passed. In addition, in order to put the range hood into use, it is necessary to use a structure in which the support part is always lifted, so that a simple structure can be used for self-inspection to ensure safety when descending and to maintain its safety. it can.

Further, when the support part is lowered when not in use and is at the lowest point position, at least a part of the optical surface of the sensor is below the upper surface of the top plate, and the self-inspection part has the support part at the lowest point. The sensor may detect that the sensor is functioning normally by detecting the top plate when it starts to rise from the position.
According to this, when the sensor is defective, even if the sensor is below the top surface of the top plate, the sensor cannot detect the top plate, so at least a part of the sensor is below the top surface of the top plate. And when a sensor detects the top plate, it can test | inspect that the sensor is functioning normally. Moreover, in order to put the range hood into a use state, a self-inspection can be performed with a simple configuration by using a configuration in which the support portion is always raised.

  As described above, according to the present invention, in the range hood that rises when in use and descends when not in use, the self-maintenance for ensuring safety at the time of lowering and maintaining the safety with a simple configuration is provided. A range hood having an inspection function can be provided.

BRIEF DESCRIPTION OF THE DRAWINGS (A) Front view, (B) Top view, (C) Left side view, (D) Rear view, in a state in which the lifting member in the first embodiment of the range hood according to the present invention is raised. The perspective view seen from the upper right of the state which the raising / lowering member in the 1st Example of the range hood which concerns on this invention rose. BRIEF DESCRIPTION OF THE DRAWINGS (A) Front view, (B) Top view, (C) Left side view, (D) Back view of a state where the lifting member in the first embodiment of the range hood according to the present invention is lowered. The perspective view seen from the upper right of the state which the raising / lowering member in the 1st Example of the range hood which concerns on this invention fell. FIG. 3A is a cross-sectional view taken along the line II in FIG. 3C, and FIG. 3A is a cross-sectional view taken along the line II-II in a state where the elevating member is lowered in the first embodiment of the range hood according to the present invention. FIG. 3C is an enlarged cross-sectional view in the vicinity of the joint portion in FIG. 3C, and FIG. 3B is an enlarged cross-sectional view in the vicinity of the joint portion in FIG.

Hereinafter, embodiments according to the present invention will be described with reference to the drawings.
<First Example>
1 and 2 show the range hood 1 when in use in the first embodiment of the present invention, and FIGS. 3 and 4 show the range hood 1 when not in use. The range hood 1 includes a cabinet 10 placed on a floor such as a kitchen, a lifting member 2 that partially lifts and lowers from a top plate 12 of the cabinet 10, and a drive device 60 that drives the lifting and lowering of the lifting member 2. The fan 50 is disposed in the cabinet 10 and generates an air flow, and the purification device 70 is disposed on the air flow path. The top plate 12 of the cabinet 10 is provided with a cooking device 11, a discharge port 13, and an in / out hole 14 in the vicinity of the heating cooking device 11, in which the elevating member 2 appears and appears.

  The fan 50 is preferably a sirocco fan having a high static pressure, but is not particularly limited. Moreover, it is preferable that the purification apparatus 70 is comprised from multiple types of filter. For example, grease filters for removing mainly oils and fats contained in air (woven fabric such as glass wool and non-woven fabric filters, metal filters such as lath net, slot filter, punching metal) and inorganic ions are adsorbed And a filter made of a continuous porous foam with a deodorizing element attached thereto. Of course, the purification device is not limited to this as long as it can remove oil and fat and odor components from the air containing oily smoke and the like.

  The elevating member 2 is located almost directly above the heating cooker 11 when in use, and is located at a slight gap with the top plate 12 when not in use, and supports the hood part 30 having the suction port 31 and the hood part 30. The support unit 20 has a substantially constant radius of curvature and protrudes and retracts from the recess 14 of the top plate 12, and the action unit 40 supports the support unit 20 inside the cabinet 10 and raises and lowers the support unit 20.

  In the range hood 1, when not in use, as shown in FIGS. 3 and 4, most of the support portion 20 is submerged below the upper surface SF of the top plate 12 and accommodated in the cabinet 10. The top plate 12 is located close to the top surface SF with a slight gap from the top surface SF, and is disposed in the vicinity of the top plate 12. However, the hood part 30 may be in contact with the upper surface SF of the top plate 12 when not in use.

  In the range hood 1, when a switch to be used in a non-use state is turned on, the drive device 60 having a telescopic mechanism is extended and is pivotally supported at the upper part on the front side in the cabinet 10. The action part 40 is pushed up to raise the entire elevating member 2 until the action part 40 becomes substantially horizontal. If it does so, the substantially whole support part 20 will appear on the upper surface SF of the top plate 12, and the food | hood part 30 of the raising / lowering member 2 is located just above the heating cooker 11, and opposes the upper surface of the top plate 12. FIG. It will be. The range hood 1 is locked at a position where the hood section 30 is located just above the heating cooker 11 to maintain this state, and the fan 50 is operated to be in use.

  The cooker hood 1 in use is in accordance with the flow of air generated by the fan 50, and the air containing steam or smoke generated by cooking in the heating cooker 11 from the suction port 31 provided in the hood unit 30. Inhale. The air sucked from the suction port 31 is guided to the purification device 70 through the hood portion 30, the support portion 20, and an air passage (not shown) provided inside the cabinet 10. The air led to the purification device 70 is removed from the oil smoke and the like, and is discharged from the discharge port 13 provided in the top plate 12. Needless to say, as in the present embodiment, the purified air may be returned to the room through the discharge port 13 or the purified air may be exhausted to the outside through the duct.

  Conversely, when the drive device 60 is changed from the use state of the range hood 1 shown in FIGS. 1 and 2 to the non-use state shown in FIGS. 3 and 4, the drive device 60 is driven so as to shorten itself to lower the elevating member 2. . Alternatively, the drive device 60 only unlocks when the elevating member 2 is lowered, and the drive device 60 may be shortened by its own weight without using the power of the drive device 60. When lowering 2, a load may or may not be generated. For example, the driving device 60 is a linear actuator that drives only in the upward direction or in both upward and downward directions. When the drive device 60 is driven to shorten itself so as to lower the elevating member 2, the drive device 60 stops its own drive when the sensor detects an object, as will be described later. When the driving device 60 lowers the elevating member 2 with its own weight, the driving device 60 has a mechanism that stops the lowering when the sensor detects an object.

  The range hood 1 includes a sensor 24 (shown in FIG. 5) that detects an object between the hood portion 30 and the top plate 12. The sensor 24 functions when the elevating member 2 that is not in use is lowered, and an object that may be pinched between the hood 30 and the top plate 12 when the hood 30 is lowered. Detect the presence or absence. The sensor 24 includes an optical surface 21 in the vicinity of the coupling portion 23 with the hood portion 30 in the support portion 20.

  The sensor 24 is an infrared motion sensor, and the sensor itself emits infrared light from an optical surface such as an LED and inspects whether or not an object such as a human body exists within a predetermined distance by the reflected light. Here, the predetermined range preferably has an inspection distance substantially equal to the lateral width W of the hood portion 30 in the lateral width direction (direction perpendicular to the optical surface 21).

  Moreover, the vertical width direction (direction parallel to the optical surface 21) in a predetermined range is an inspection width according to the sensor specifications. The optical surface 21 is provided in the vicinity of the coupling portion 23 with the hood portion 30 and at a position where the hood portion 30 does not exist in the detection range of the sensor 24. That is, the distance from the corner portion formed by the hood portion 30 and the support portion 20 to the center of the optical surface 21 of the sensor 24 is the sensor. The distance is slightly longer than about half of the 24 inspection widths.

  In such a predetermined range, the sensor 24 detects an object between the hood 30 and the top plate 12 and in the vicinity of the lower portion of the hood 30 as the support unit 20 descends. In addition to providing the range hood 1 for safety at the time, the hood part 30 that is lowered together with the optical surface 21 is in a position that does not exist in the detection range, so that infrared light is reflected by the hood part 30 and irregular reflection occurs. It is possible to prevent malfunctions that occur as a result. Further, since only the minimum detection range is detected in the vicinity of the coupling portion with the hood portion 30, only a minimum sensor is required, and the cost can be reduced.

  A self-inspection (self-check) in the range hood 1 will be described with reference to FIG. The range hood 1 includes the optical surface 21 of the sensor 24 in the vicinity of the coupling portion 23 with the hood portion 30 in the support portion 20. The sensor 24 emits and emits infrared light from the optical surface 21 in a direction substantially perpendicular to the optical surface 21 to detect an object within a predetermined range. When the support portion 20 is lowered when not in use and is at the lowest point (the state shown in FIG. 5), the optical surface 21 is located below the upper surface SF of the top plate 12.

  In the present embodiment, the entire optical surface 21 is located below the upper surface SF of the top plate 12, but the sensor 24 only needs to detect the side surface of the intrusion hole 14 of the top plate 12, so at least a part of the optical surface 21. May be positioned below the upper surface SF of the top plate 12. When the range hood 1 is to be changed from the non-use state to the use state, if at least a part of the optical surface 21 is located below the upper surface SF of the top plate 12, the sensor 24 functions normally. The side surface of the in / out hole 14 of the top plate 12 is detected. When a plurality of optical surfaces 21 are provided, it is preferable that a part of each optical surface 21 is located below the upper surface SF of the top plate 12. When the sensor element itself has a self-inspection function, it is not necessary to have such a configuration.

  When having such a configuration, the range hood 1 preferably includes a self-inspection unit 22. The self-inspection unit 22 inspects whether or not the sensor 24 is functioning normally based on the detection result of the sensor 24. When the switch to be used is turned on in the non-use state, that is, when the support part 20 starts to rise from the lowest position, the self-inspection part 22 causes the sensor 24 to function, and the sensor 24 is 12 is detected. When the sensor 24 detects the side surface of the appearance hole 14 of the top plate 12, the self-inspection unit 22 determines that the sensor 24 is functioning normally. When the sensor 24 does not detect the side surface of the entrance / exit hole 14, the self-inspection unit 22 determines that the sensor 24 is not functioning normally. When the switch to be used is turned on in the non-use state, the self-inspection unit 22 causes the sensor 24 to function before the support unit 20 starts to rise from the lowest point position. You may test | inspect whether the board 12 is detected.

  According to this, when the sensor 24 is defective, the sensor 24 cannot detect the top plate 12 even if the sensor 24 is below the upper surface SF of the top plate 12, and therefore at least a part of the sensor 24 is It can be inspected that the sensor 24 is functioning normally when it is below the upper surface SF of the plate 12 and the sensor 24 detects the top plate 12. Moreover, in order to put the range hood 1 into the use state, the self-inspection can be performed with a simple configuration by using the configuration in which the support portion 20 is always raised.

  In addition, the self-inspection unit 22 causes the sensor 24 to function even in the process in which the support unit 20 moves up. The self-inspection unit 22 inspects whether the sensor 24 detects any object in the space through which the hood unit 30 has passed while the sensor 24 is functioning in the process in which the support unit 20 is raised. Since the hood part 30 has just passed through the space through which the rising hood part 30 passes, that is, the space below the hood part 30, there is usually no object. Nevertheless, if the sensor 24 continues to detect any object, the self-inspection unit 22 determines that the optical surface 21 of the sensor 24 is dirty.

  According to this, when dirt such as oil adheres to the optical surface 21 of the sensor 24, the optical surface 21 of the sensor 24 is in the process of raising the support portion 20 and while the sensor 24 is functioning. It will continue to detect dirt adhering to. Therefore, it can be inspected that the optical surface 21 of the sensor 24 is dirty as the sensor continues to detect in the space through which the hood portion 30 has passed. Further, in order to put the range hood 1 into a use state, a configuration in which the support portion 20 is always raised is used, so that the safety at the time of lowering is achieved by a simple configuration and the self-inspection for maintaining the safety is performed. be able to.

<Other examples>
In the above embodiment, the hood portion is cantilevered by one support portion. However, the hood portion may be supported by two support portions provided on both sides. Further, in the above embodiment, the hood portion has a beam shape rather than a large width in the depth direction. However, the hood portion may be a lid that covers the top plate of the cabinet when not in use by increasing the width in the depth direction. Good. Moreover, in the said Example, although the suction inlet was provided only in the food | hood part, you may be provided in other places, such as a support part.

  Moreover, in the said Example, an air path, a purification apparatus, and an air blower are provided in the inside of the cabinet which has a heating cooker, and it is comprised so that a raising / lowering member may protrude and retract from the intrusion hole provided in the top plate of the cabinet. However, a cabinet having a heating cooker and a range hood in which an air passage, a purification device, a blower, and a lifting member are unitized may be configured as separate units, and the range hood may be installed adjacent to the cabinet. Even in this case, the hood portion of the elevating member is configured to face the top plate of the cabinet when in use, and to be disposed near the top plate of the cabinet when not in use.

  In addition, this invention is not limited to the illustrated Example, The implementation by the structure of the range which does not deviate from the content described in each item of a claim is possible. That is, the invention has been illustrated and described with particular reference to particular embodiments, but with respect to the embodiments described above, without departing from the scope and spirit of the invention, the shape, material Various modifications can be made by those skilled in the art in terms of quantity, other details, and the like. Therefore, the description limited to the shape disclosed above is an example for easy understanding of the present invention, and does not limit the present invention. The description in the name of the member excluding a part or all of the limitation is included in the present invention.

DESCRIPTION OF SYMBOLS 1 Range hood 2 Elevating member 10 Cabinet 11 Heating cooker 12 Top plate 13 Outlet 14 Outlet / intrusion hole 20 Support part 21 Sensor optical surface 22 Self-inspection part 23 Coupling part 24 Sensor 30 Hood part 31 Suction port 40 Action part 50 Fan 60 Driving device SF Top surface of the top plate

Claims (4)

A cabinet having a heating cooker;
A support part provided in the cabinet so as to be movable up and down;
A hood that is supported by the support, rises when in use and faces the top of the cabinet, and descends when not in use and is disposed near the top,
A sensor for detecting an object between the hood and the top plate;
With
The support portion has an optical surface of the sensor at a position near the coupling portion with the hood portion and the hood portion does not exist in the detection range.
Range food. A self-inspection unit that performs a self-inspection based on the detection result of the sensor;
The self-inspection unit inspects that the optical surface of the sensor is dirty by continuously detecting the sensor in a space through which the hood portion has passed while the sensor is functioning in the process of raising the support unit. The range hood according to claim 1. When the support portion is lowered and is at the lowest point position when not in use, at least a part of the sensor is below the upper surface of the top plate,
The self-inspection unit inspects that the sensor is functioning normally by detecting the top plate when the support portion starts to rise from the position of the lowest point. The range hood according to claim 2. A self-inspection unit that performs a self-inspection based on the detection result of the sensor;
When the support portion is lowered when not in use and is at the lowest point position, at least a part of the optical surface of the sensor is below the top surface of the top plate,
The self-inspection unit inspects that the sensor is functioning normally by detecting the top plate when the support portion starts to rise from the position of the lowest point. The range hood according to claim 1.