JP2012011895A - Defogger and window - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a defogger and a window, suppressing fog by properly supplying blown air to a predetermined region of a window glass.SOLUTION: The defogger 14 is provided for a frame 12 supporting the window glass 13. The defogger 14 includes an outlet 21 provided in the frame 12 for air to be blown out thereof toward the window glass 13, and a vortex tube-shaped flow-generating unit for forming air blown out of the outlet 21 into a vortex tube-shaped flow to continuously run along an inner face 13a of the window glass 13.

Description

  The present invention relates to an antifogging device for preventing fogging of window glass in an aircraft, an automobile, a ship, and the like, and a window equipped with the antifogging device.

  As a technology to prevent fogging of the window glass in aircraft and automobiles, it is common to raise the temperature of this window glass by blowing warm air on the inner surface of the window glass (defroster) Is. In this case, since the warm air blown out from the blowout port moves along the inner surface of the window glass and entrains the surrounding air, the temperature of the warm air decreases, and the evaporation effect of moisture adhering to the inner surface of the window glass Will become smaller.

  As a solution to this problem, for example, there is one described in Patent Document 1 below. The anti-fogging air nozzle described in Patent Document 1 is provided with an air blowing port at a position close to the glass surface, and a large number of pores that allow air to pass through the position away from the glass surface of the air blowing port. It is closed with a porous body. Therefore, high-speed air is blown out from the air outlet close to the glass surface, and low-speed air is blown out from the porous body away from the glass surface. Can be prevented.

JP 63-258244 A

  In the conventional anti-fogging air nozzle described above, in order to prevent the entrainment of room air, a porous body serving as a resistor is provided in a part of the air outlet, and the blowing speed on the side in contact with the room air is reduced. Yes. In this configuration, the velocity gradient in the velocity shear layer generated at the boundary between the air (hot air) blown out from the air outlet and the room air is reduced, and mixing of the hot air and the room air is suppressed. In this case, when the glass surface is large, it is necessary to increase the air blowing speed in order to allow the warm air to reach the entire glass surface, and the speed gradient also increases.

  This invention solves the subject mentioned above, and it aims at providing the anti-fogging apparatus and window which can send out blowing air appropriately to the predetermined area | region of a window glass, and can suppress fogging.

  In order to achieve the above object, an anti-fogging device according to the present invention is provided on one side of a window glass and capable of blowing air, and air blown from the blowing window is continuously supplied to the window glass. And a vortex tubular flow generating means configured as a vortex tubular flow traveling along the surface.

  Therefore, the air blown out from the outlet becomes a vortex tubular flow that continuously travels along the surface of the window glass by the vortex tubular flow generating means, and this vortex tubular flow rolls on the surface of the window glass. Flowing. Therefore, the whirl-tubular flow is suppressed from mixing with ambient air, and contact with the window glass is promoted, so that water droplets generated on the surface of the window glass can be appropriately evaporated. As a result, the blown air can be appropriately supplied to a predetermined area of the window glass to suppress the occurrence of fogging.

  In the anti-fogging device of the present invention, the spiral tubular flow generating means has air blowing means for changing the flow velocity of air blown from the blowing port at a predetermined interval set in advance.

  Therefore, by changing the flow velocity of the air blown from the blowout port by the air blowout means, it is possible to intermittently form the vortex tubular flow, and to properly form the formed vortex tubular flow along the window glass. Can proceed to.

  In the anti-fogging device of the present invention, the air outlet is disposed at a position spaced apart from the window glass by a predetermined distance.

  Therefore, when the outlet is separated from the window glass, a spiral flow approaching the window glass can be appropriately formed.

  In the anti-fogging device of the present invention, the spiral tubular flow generating means is preset between a suction port provided between the window glass and the blowout port and capable of sucking air, and a flow rate of air sucked from the suction port. And air suction means for changing at predetermined intervals.

  Therefore, when the flow velocity of the air sucked from the suction port is changed by the air suction means, the air blown from the blower port becomes a spiral flow, and can be appropriately advanced along the window glass.

  In the anti-fogging device of the present invention, the spiral tubular flow generating means has an opening / closing member that opens and closes the outlet at predetermined intervals.

  Therefore, when the opening / closing member is opened and closed by the opening / closing member at a predetermined interval, the flow velocity of the air blown out from the outlet changes, so that the spiral flow can be formed intermittently and the formed spiral tube Can be properly advanced along the window glass.

  In the anti-fogging device of the present invention, the spiral flow generating means has a synthetic jet nozzle provided between the window glass and the outlet.

  Therefore, by the reciprocating pressure fluctuation between the window glass and the blowout port by the synthetic jet nozzle, the air blown out from the blowout port becomes a vortex-shaped flow, and can be appropriately advanced along the window glass. it can.

  In the anti-fogging device of the present invention, the temperature sensor that detects the surface temperature of the window glass, the heating device that heats the air blown from the outlet, and the heating device is controlled based on the detection result of the temperature sensor. And a control device for adjusting the temperature of the air blown out from the outlet.

  Therefore, the control device efficiently adjusts the temperature of the air blown out from the blowout port by the heating device based on the surface temperature of the window glass, thereby efficiently supplying air at the appropriate temperature along the window glass. In addition, fogging of the window glass can be suppressed.

  The anti-fogging device of the present invention is characterized in that a suction port for sucking air is provided on one side of the window glass facing the blowing port.

  Therefore, the air blown out from the blowout opening along the window glass is sucked from the suction opening and collected, and fluctuations in the room temperature due to the air blown out from the blowout opening can be suppressed.

  In the antifogging device of the present invention, a pressurizer that pressurizes air sucked from the room and a heat exchanger that heats the air taken from the outside by exchanging heat with the pressurizer is provided, The air heated by the heat exchanger is blown out along the surface of the window glass.

  Therefore, the air sucked from the room is pressurized by the pressurizer, the air taken from the outside is heated by exchanging heat with the pressurizer by the heat exchanger, and the heated air is blown from the blowout window. Therefore, the air blown to the surface of the window glass can be efficiently heated.

  The window of the present invention includes a frame-like frame, a window glass supported by the frame, a blowout port provided on the frame and capable of blowing air toward the windowglass, and a blowout from the blowout port. And a vortex tubular flow generating means for making the vortex tubular flow that continuously travels along the surface of the window glass.

  Therefore, the air blown out from the outlet becomes a vortex tubular flow that continuously travels along the surface of the window glass by the vortex tubular flow generating means, and this vortex tubular flow rolls on the surface of the window glass. Flowing. Therefore, the whirl-tubular flow is suppressed from mixing with ambient air, and contact with the window glass is promoted, so that water droplets generated on the surface of the window glass can be appropriately evaporated. As a result, the blown air can be appropriately supplied to a predetermined area of the window glass to suppress the occurrence of fogging.

  According to the anti-fogging device and the window of the present invention, the vortex-shaped flow generating means for providing the vortex-shaped flow that continuously proceeds along the surface of the window glass with the air blown from the blow-out opening is provided. Appropriate feeding to a predetermined area of the window glass can suppress the occurrence of fogging.

FIG. 1 is a schematic diagram illustrating an antifogging apparatus according to a first embodiment of the present invention. FIG. 2 is a graph showing the air blowing speed in the anti-fogging device of Example 1. FIG. 3 is a schematic diagram illustrating a window on which the anti-fogging device according to the first embodiment is mounted. FIG. 4 is a schematic diagram illustrating an anti-fogging device according to Embodiment 2 of the present invention. FIG. 5 is a graph showing the air blowing speed and the air suction speed in the anti-fogging device of Example 2. FIG. 6 is a schematic diagram illustrating an anti-fogging device according to a third embodiment of the present invention. FIG. 7 is a schematic diagram illustrating an anti-fogging device according to a fourth embodiment of the present invention. FIG. 8 is a schematic diagram illustrating a synthetic jet nozzle in the anti-fogging device according to the fourth embodiment. FIG. 9 is a graph showing the air blowing speed by the synthetic jet nozzle in the anti-fogging device of Example 4. FIG. 10 is a schematic diagram illustrating an anti-fogging device according to a fifth embodiment of the present invention. FIG. 11 is a schematic diagram illustrating an anti-fogging device according to Embodiment 6 of the present invention. FIG. 12 is a schematic configuration diagram illustrating an antifogging apparatus according to Embodiment 7 of the present invention.

  Exemplary embodiments of an antifogging device and a window according to the present invention will be described below in detail with reference to the accompanying drawings. In addition, this invention is not limited by this Example.

  1 is a schematic diagram illustrating an antifogging apparatus according to a first embodiment of the present invention, FIG. 2 is a graph illustrating an air blowing speed in the antifogging apparatus according to the first embodiment, and FIG. 3 is an antifogging apparatus according to the first embodiment. It is the schematic showing the window with which was mounted | worn.

  In the aircraft to which the anti-fogging device of the first embodiment is applied, as shown in FIG. 3, a cockpit (not shown) is provided at the front of the aircraft, and the cockpit for the cockpit is provided in front of the cockpit. A window 11 is provided. The window 11 is composed of a frame 12 having a frame shape fixed to the aircraft body, and a window glass 13 supported by the frame 12. The window 11 is provided with an anti-fogging device 14.

  This antifogging device 14 will be described in detail. As shown in FIG. 1, the periphery of the window glass 13 is supported by a frame 12, and the antifogging device 14 is provided in a region of the frame 12 positioned below the window glass 13. In FIG. 1, the left side of the window glass 13 in the vertical direction is outside the machine (outdoor), and the right side is inside the machine (indoor).

  The blowout port 21 is provided on the inner side of the window glass 13, on one side of the window glass 13 in the frame 12, in the present embodiment, on the lower side, and extends substantially horizontally along the lower edge of the window glass 13. It has a slit shape and faces the direction along the inner surface 13 a of the window glass 13. The blowout port 21 is disposed at a position separated from the window glass 13 by a predetermined distance L with respect to a direction orthogonal to the window glass 13 (left-right direction in FIG. 1). In this case, the frame 12 has a horizontal portion 12 a formed from the inner surface 13 a of the window glass 13 to the outlet 21. That is, the horizontal portion 12a forms a step on both sides of the air outlet 21 (the side closer to the window glass 13 and the side away from the window glass 13).

  The blower port 21 is connected to a blower 23 via an air supply pipe 22, and the blower 23 is controlled in rotational speed by a control device 24. Therefore, when the blower 23 is operated, air is sucked from outside the apparatus, heated by a heat exchanger (not shown), and supplied to the outlet 21 through the air supply pipe 22, so that warm air is blown from the outlet 21 into the window. The glass 13 can be blown out along the inner surface 13a of the glass 13 and upward.

  In this embodiment, there is provided a vortex tubular flow generating means for making the air (warm air) blown out from the blowout port 21 into a vortex tubular flow that continuously proceeds along the inner surface (surface) 13a of the window glass 13. It has been. Here, the spiral tubular flow generating means is constituted by the blower 23 and the control device 24. That is, the control device 24 functions as an air blowing unit that controls the blower 23 to change the flow velocity (flow rate) of the air blown from the blowing port 21 at a predetermined interval.

Control unit 24, by performing the speed control of the blower 23, as shown in FIG. 2, as the flow rate Vt of air blown out from the blowout opening 21 becomes the maximum velocity Vt _max at a predetermined period T, also The flow velocity Vt of the air blown out from the blowout port 21 is continuously increased or decreased so as to become 0 at a predetermined period T. That is, air is intermittently blown out from the outlet 21. In this case, the relationship between the flow velocity Vt of the air blown out from the outlet 21 and the period T is important, and it is necessary to set the air flow velocity Vt and the period T so that the spiral flow is properly formed. .

  Here, the flow of air blown out from the blowout port 21 will be described. As shown in FIG. 1, normally, when air of a constant flow velocity is blown out from the blowout port 21, the air diffuses and swirls to approach the inner surface 13a of the window glass 13 as shown by the dotted line in FIG. A flow that swirls away from the inner surface 13a of the window glass 13 is generated. On the other hand, when the flow velocity of the air blown out from the blow-out port 21 is continuously increased or decreased at a predetermined cycle, this air continuously flows along the inner surface 13a of the window glass 13 as shown by a solid line in FIG. It becomes a tubular flow.

That is, when air is blown out from the blowout port 21, the air turns into a flow swirling toward the inner surface 13a of the window glass 13 and a flow swirling away from the inner surface 13a of the window glass 13 due to the resistance of the surrounding air. Divided. Here, when the flow velocity of the air blown out from the blowout port 21 decreases, the swirl flow approaching the inner surface 13a of the window glass 13 and the swirl flow moving away from the inner surface 13a of the window glass 13 have a lower force to move upward. Thus, the spiral flow Fa ₁ and Fb ₁ swirling in opposite directions are obtained.

In this case, outlet 21, inner surface 13a and spaced a predetermined distance L of the window glass 13, since the horizontal portion 12a is formed therebetween, the flow Fa ₁ of vortex tube is easily generated. Since the blowout port 21 has a slit shape along the window glass 13, vortices are formed in the length direction of the slits, and vortex-shaped flows Fa ₁ and Fb ₁ are generated. Subsequently, when the flow velocity of the air blown out from the blow-out port 21 increases, the spiral flow Fa ₁ and Fb ₁ swirling in the vicinity of the outlet of the blow-out port 21 rises, and the spiral flow Fa ₂ and Fb ₂ becomes It is formed.

Then, when the flow velocity of the air blown out from the blowout port 21 decreases again, spiral flow Fa ₁ and Fb ₁ swirling in opposite directions are generated near the outlet of the blowout port 21. Subsequently, when the flow velocity of the air blown out from the blowout port 21 increases, the spiral flow Fa ₁ and Fb ₁ near the outlet of the blowout port 21 and the spiral flow Fa ₂ and Fb ₂ thereabove are further increased. Ascending, the spiral flow Fa ₂ , Fb ₂ , Fa ₃ , Fb ₃ is formed.

Therefore, the air blown out from the blowout port 21 becomes a spiral tubular flow Fa ₁ , Fa ₂ , Fa ₃ , Fa ₄ ... That flows so that a part of the air rolls along the inner surface 13 a of the window glass 13. Contact with the inner surface 13a of the window glass 13 is promoted. In this case, since the air is warm air, heat exchange is performed between the warm air and the window glass 13, and the effect of evaporating water droplets adhering to the inner surface 13 a of the window glass 13 is increased, thereby suppressing fogging. It becomes possible.

On the other hand, among the air blown out from the blow-out port 21, the spiral-shaped flows Fb ₁ , Fb ₂ , Fb ₃ ... Swirling away from the inner surface 13a of the window glass 13 flow inside the machine. Therefore, the vortex tubular flows Fa ₁ , Fa ₂ , Fa ₃ , Fa ₄ ... Flowing so as to roll along the inner surface 13a of the window glass 13 are suppressed from mixing with the air in the machine. Since the tubular flows Fa ₁ , Fa ₂ , Fa ₃ , Fa ₄ ... Flow in a spiral shape, it becomes difficult to release the internal heat, and the temperature drop can be suppressed.

  As described above, in the antifogging device according to the first embodiment, the antifogging device 14 is provided on the frame 12 that supports the window glass 13, and air is blown out toward the window glass 13 as the antifogging device 14. A possible blowout port 21 is provided, and a vortex tubular flow generating means is provided for making the air blown out from the blowout port 21 into a vortex tubular flow that continuously travels along the inner surface 13 a of the window glass 13.

  Therefore, the air blown out from the blowout port 21 becomes a vortex tubular flow that continuously travels along the inner surface 13a of the window glass 13 by the vortex tubular flow generating means, and this vortex tubular flow is the inner surface of the window glass 13. It flows to roll 13a. Therefore, the whirl-tubular flow is suppressed from mixing with ambient air, and contact with the window glass 13 is promoted, so that water droplets generated on the surface of the window glass 13 can be appropriately evaporated. As a result, the blown air can be appropriately supplied to a predetermined area of the window glass 13 to suppress the occurrence of fogging.

  Further, in the anti-fogging device of the first embodiment, an air blowing means for changing the flow velocity of the air blown from the blowing port 21 at a predetermined interval is provided as the spiral flow generating means. Here, a blower 23 and a control device 24 are provided as air blowing means.

  Accordingly, the control device 24 can intermittently form a spiral flow by controlling the blower 23 and changing the flow velocity of the air blown from the blow-out port 21 at a predetermined interval set in advance. The formed spiral-shaped flow can be properly advanced along the window glass 13.

  Further, in the anti-fogging device of the first embodiment, the air outlet 21 is disposed at a position that is separated from the inner surface 13a of the window glass 13 by a predetermined distance L. Therefore, when the blowout port 21 is separated from the window glass 13, a spiral flow approaching the window glass 13 can be appropriately formed.

  FIG. 4 is a schematic diagram illustrating an anti-fogging device according to a second embodiment of the present invention, and FIG. 5 is a graph illustrating an air blowing speed and an air suction speed in the anti-fogging device according to the second embodiment. In addition, the same code | symbol is attached | subjected to the member which has the function similar to the Example mentioned above, and detailed description is abbreviate | omitted.

  In the anti-fogging device of the second embodiment, as shown in FIG. 4, the window glass 13 is supported by the frame 12, and the outlet 21 is provided below the window glass 13 in the frame 12. A slit shape along the horizontal direction is formed on the lower edge of the glass 13. The blower port 21 is connected to a blower 23 via an air supply pipe 22, and the blower 23 is controlled in rotational speed by a control device 24.

  In the present embodiment, there is provided a vortex tubular flow generating means for making the air (warm air) blown out from the outlet 21 into a vortex tubular flow that continuously proceeds along the inner surface 13a of the window glass 13. . That is, the suction port 31 is provided below the window glass 13 in the frame 12, and has a slit shape along the substantially horizontal direction at the lower edge of the window glass 13, similarly to the blowout port 21. The suction port 31 is provided between the inner surface 13a of the window glass 13 and the blowout port 21 and can suck air. The suction port 31 is connected to a blower 33 via an air discharge pipe 32, and the blower 33 is controlled in rotational speed by a control device 24.

  Here, the spiral flow generating means is constituted by the suction port 31, the blower 33, and the control device 24. That is, the control device 24 functions as air suction means that controls the blower 33 to change the flow velocity (flow rate) of the air sucked from the suction port 31 at a predetermined interval. The control device 24 functions as an air blowing means that controls the blower 23 to change the flow velocity (flow rate) of the air blown from the blowing port 21 at a predetermined interval.

Control unit 24, by performing the speed control of the blower 23, as shown in FIG. 5, continuously as a flow rate Vt of air blown out from the blowout opening 21 becomes the maximum velocity Vt _max at a predetermined period T Increase or decrease. Further, the control device 24 controls the rotational speed of the blower 33 to continuously increase / decrease the flow velocity Vs of the air sucked from the suction port 31 so as to become the maximum flow velocity Vs _max in a predetermined period T. The maximum flow velocity Vt _{max of the} air blown from the outlet 21 and the maximum flow velocity Vs _{max of the} air sucked from the suction port 31 are set to coincide with each other at a period T / 2.

  Here, the flow of air blown out from the blowout port 21 will be described. As shown in FIG. 4, when the flow rate of the air blown out from the blowout port 21 is continuously increased and decreased at a predetermined cycle, and the flow rate of the air sucked from the suction port 31 is continuously increased and decreased at a predetermined cycle, A spiral-shaped flow that travels along the inner surface 13a of the window glass 13 is generated.

That is, when the flow rate of air blown out from the blow-out port 21 and the flow rate of air blown out from the blow-out port 21 decreases and the flow rate of air sucked in from the suction port 31 increases, the air blown out from the blow-out port 21 since the swirling flow is generated closer to the inner surface 13a of the window glass 13 by the suction force from 31, the flow F ₁ of the vortex tube is produced to pivot.

Subsequently, when the flow velocity of the air blown from the blow-out port 21 increases and the flow velocity of the air sucked from the suction port 31 decreases, the spiral flow F ₁ swirling in the vicinity of the outlet of the blow-out port 21 rises. flow F ₂ of the vortex tube is formed Te. When the flow velocity of the air blown out from the blow-out port 21 decreases again and the flow velocity of the air sucked in from the suction port 31 increases, the spiral flow F ₁ is generated in the vicinity of the outlet of the blow-out port 21. Subsequently, when the flow velocity of the air blown from the blow-out port 21 increases and the flow velocity of the air sucked from the suction port 31 decreases, the spiral flow F _{1 in the} vicinity of the outlet of the blow-out port 21 and above the flow. flow F ₂ of the vortex tube is further increased.

Therefore, the air blown out from the blowout port 21 becomes spiral-shaped flows F ₁ , F ₂ ... Flowing so as to roll along the inner surface 13 a of the window glass 13, and the contact between the air and the inner surface 13 a of the window glass 13. Is promoted. In this case, since the air is warm air, heat exchange is performed between the warm air and the window glass 13, and the effect of evaporating water droplets adhering to the inner surface 13 a of the window glass 13 is increased, thereby suppressing fogging. It becomes possible. Further, the vortex tubular flows F ₁ , F ₂ ... Flowing so as to roll along the inner surface of the window glass 13 are suppressed from mixing with the air in the machine and flow in a vortex shape, thereby releasing internal heat. It becomes difficult to suppress the temperature drop.

  As described above, in the anti-fogging device according to the second embodiment, the air outlet 21 that can blow out air toward the window glass 13 is provided, and the air suction that can suck air between the window glass 13 and the air outlet 21 is provided. An air blowing means provided with a port 31 for changing the flow rate of air blown from the blowing port 21 at predetermined intervals, and air suction for changing the flow rate of air sucked from the suction port 31 at predetermined intervals Means are provided. Here, blowers 23 and 33 and a control device 24 are provided as air blowing means and air sucking means.

  Therefore, the air blown out from the blowout port 21 becomes a spiral flow that continuously advances along the inner surface 13 a of the window glass 13 by the suction force from the suction port 31. It flows so as to roll on the inner surface 13a. Therefore, the whirl-tubular flow is suppressed from mixing with ambient air, and contact with the window glass 13 is promoted, so that water droplets generated on the surface of the window glass 13 can be appropriately evaporated. As a result, the blown air can be appropriately supplied to a predetermined area of the window glass 13 to suppress the occurrence of fogging.

  In the second embodiment, the control device 24 controls the rotational speeds of the blowers 23 and 33, so that the flow velocity Vt of air blown from the blowout port 21 and the flow velocity Vs of air sucked from the suction port 31 are obtained. However, it is also possible to perform only the rotational speed control of the blower 33 and set the blower 23 to a constant rotational speed.

  FIG. 6 is a schematic diagram illustrating an anti-fogging device according to a third embodiment of the present invention. In addition, the same code | symbol is attached | subjected to the member which has the function similar to the Example mentioned above, and detailed description is abbreviate | omitted.

  In the antifogging device of Example 3, as shown in FIG. 6, the window glass 13 is supported by the frame 12, and the outlet 21 is provided below the window glass 13 in the frame 12. A slit shape along the horizontal direction is formed on the lower edge of the glass 13.

  In the present embodiment, there is provided a vortex tubular flow generating means for making the air (warm air) blown out from the outlet 21 into a vortex tubular flow that continuously proceeds along the inner surface 13a of the window glass 13. . In other words, the lid (opening / closing member) 41 has a base end portion rotatably supported by the mounting bracket 42 of the frame 12 by the support shaft 43, and closes the blowing port 21. It is freely rotatable to the closed position. The lid 41 can be rotated between the open position and the closed position by a drive device (not shown) (for example, a drive motor, an air cylinder, etc.). A control device (not shown) controls the opening and closing of the outlet 21 at a predetermined interval by the lid 41 by controlling the driving of the driving device.

  Here, the spiral tubular flow generating means includes a lid 41, a drive device, and a control device. That is, the control device intermittently rotates the lid 41 between the open position and the closed position, thereby continuously increasing / decreasing the flow velocity of the air blown out from the outlet 21 at a predetermined cycle.

  Therefore, by intermittently opening and closing the lid 41 at a predetermined cycle, the flow velocity of the air blown from the outlet 21 continuously increases and decreases at a predetermined cycle, and continuously along the inner surface 13a of the window glass 13. A traveling spiral flow is generated. Since the principle is the same as that of the first and second embodiments, the description is omitted.

  As described above, in the anti-fogging device of Example 3, the air outlet 21 that can blow out air toward the window glass 13 is provided, and the lid 41 that can open and close the air outlet 21 is provided. By intermittently rotating the lid 41 between the open position and the closed position by the driving device, the flow velocity of the air blown from the blowout port 21 is continuously increased or decreased at a predetermined cycle.

  Therefore, by intermittently opening and closing the lid 41, the air blown out from the blowout port 21 becomes a spiral flow that continuously travels along the inner surface 13a of the window glass 13, and this spiral flow is It flows so as to roll on the inner surface 13a of the window glass 13. Therefore, the whirl-tubular flow is suppressed from mixing with ambient air, and contact with the window glass 13 is promoted, so that water droplets generated on the surface of the window glass 13 can be appropriately evaporated. As a result, the blown air can be appropriately supplied to a predetermined area of the window glass 13 to suppress the occurrence of fogging.

  In the third embodiment, the opening / closing member of the present invention is a rotatable lid 41. However, the present invention is not limited to this configuration. For example, the opening / closing member of the present invention may be a slidable lid.

  7 is a schematic diagram showing an anti-fogging device according to a fourth embodiment of the present invention, FIG. 8 is a schematic diagram showing a synthetic jet nozzle in the anti-fogging device of the fourth embodiment, and FIG. 9 is an anti-fogging device of the fourth embodiment. It is a graph showing the air blowing speed by the synthetic jet nozzle in an apparatus. In addition, the same code | symbol is attached | subjected to the member which has the function similar to the Example mentioned above, and detailed description is abbreviate | omitted.

  In the anti-fogging device of Example 4, as shown in FIG. 7, the window glass 13 is supported by the frame 12, and the outlet 21 is provided below the window glass 13 in the frame 12. A slit shape along the horizontal direction is formed on the lower edge of the glass 13.

  In the present embodiment, there is provided a vortex tubular flow generating means for making the air (warm air) blown out from the outlet 21 into a vortex tubular flow that continuously proceeds along the inner surface 13a of the window glass 13. . That is, the synthetic jet nozzle 51 is provided below the window glass 13 in the frame 12, and has a slit shape that extends substantially in the horizontal direction at the lower edge of the window glass 13, as with the blowout port 21. The synthetic jet nozzle 51 is provided between the inner surface 13 a of the window glass 13 and the outlet 21.

  As shown in FIG. 8, this synthetic jet nozzle 51 is configured by providing a minute space 53 in a housing 52 and forming a nozzle portion 54 that opens to the front side, while mounting a piezoelectric element 55 on the rear side. Yes. Therefore, when the voltage applied to the piezoelectric element 55 is changed at a predetermined interval, the piezoelectric element 55 vibrates and continuously changes the volume of the minute space 53, and the pressure in the nozzle portion 54 is periodically changed. To change. Then, the pressure vibration transmitted from the nozzle portion 54 to the outside periodically changes, so that left and right eddy currents that involve surrounding air are generated on the front side of the nozzle portion 54.

  The vortex tubular flow generating means is constituted by a synthetic jet nozzle 51. That is, when a control device (not shown) changes the voltage applied to the piezoelectric element 55 in the synthetic jet nozzle 51 at a predetermined interval, the flow velocity Vt of the air blown from the outlet 21 is a predetermined cycle as shown in FIG. Increase or decrease with T.

  Here, the flow of air blown out from the blowout port 21 will be described. As shown in FIG. 7, air having a constant flow velocity is blown out from the blowout port 21 and the synthetic jet nozzle 51 is operated as described above. As a result, a spiral-shaped flow that continuously travels along the inner surface 13a of the window glass 13 is generated.

That is, when the synthetic jet nozzle 51 is operated as described above, the pressure fluctuation generated by the synthetic jet nozzle 51 separates the spiral flow Fa ₁ approaching the inner surface 13 a of the window glass 13 and the inner surface 13 a of the window glass 13. A vortex tubular flow Fb ₁ is generated. In this case, since the pressure fluctuation periodically occurs in the synthetic jet nozzle 51, spiral flow Fa ₁ , Fb ₁ , Fa ₂ ... Swirling in the opposite directions to each other in the vicinity of the outlet of the outlet 21 is continuous. Formed. Then, since air at a constant speed is blown out from the blowout port 21, the spiral flow Fa ₁ , Fb ₁ , Fa ₂ ... Rises due to the air blown out from the blowout port 21.

Therefore, the air blown out from the blowout port 21 forms spiral-shaped flows Fa ₁ , Fa ₂ ... Flowing so as to roll along the inner surface 13 a of the window glass 13, and the air and the inner surface 13 a of the window glass 13. Contact is promoted. In this case, since the air is warm air, heat exchange is performed between the warm air and the window glass 13, and the effect of evaporating water droplets adhering to the inner surface 13 a of the window glass 13 is increased, thereby suppressing fogging. It becomes possible.

  As described above, in the anti-fogging device according to the fourth embodiment, the air outlet 21 that can blow out air toward the window glass 13 is provided, and the synthetic jet nozzle 51 is provided between the window glass 13 and the air outlet 21. ing.

  Accordingly, the air blown out from the blow-out port 21 increases the flow of the spiral tube that travels along the inner surface 13a of the window glass 13 that is continuously generated by the pressure fluctuation of the synthetic jet nozzle 51. The flow flows so as to roll on the inner surface 13 a of the window glass 13. Therefore, the whirl-tubular flow is suppressed from mixing with ambient air, and contact with the window glass 13 is promoted, so that water droplets generated on the surface of the window glass 13 can be appropriately evaporated. As a result, the blown air can be appropriately supplied to a predetermined area of the window glass 13 to suppress the occurrence of fogging.

  FIG. 10 is a schematic diagram illustrating an anti-fogging device according to a fifth embodiment of the present invention. In addition, the same code | symbol is attached | subjected to the member which has the function similar to the Example mentioned above, and detailed description is abbreviate | omitted.

  In the anti-fogging device of Example 5, as shown in FIG. 10, the window glass 13 is supported by the frame 12, and the outlet 21 is provided below the window glass 13 in the frame 12. A slit shape along the horizontal direction is formed on the lower edge of the glass 13. The blower port 21 is connected to a blower 23 via an air supply pipe 22, and the blower 23 is controlled in rotational speed by a control device 24.

  In the present embodiment, a heater (heating device) 61 for heating the air flowing through the air supply pipe 22 is provided in the middle of the air supply pipe 22 to heat the air blown from the outlet 21. can do. The window glass 13 is provided with a temperature sensor 62 for detecting the temperature (surface temperature) of the inner surface 13a. The control device 24 receives the detection result of the temperature sensor 62 (inner surface temperature of the window glass 13), controls the heater 61 based on the inner surface temperature of the window glass 13, and the temperature of the air blown out from the outlet 21. Can be adjusted.

  In this case, a plurality of temperature sensors 62 are provided at predetermined positions on the window glass 13. The mounting location of the temperature sensor 62 is an area where it is necessary to secure a minimum field of view in the window glass 13.

Therefore, if the air is blown out from the blowout port 21 and the flow velocity of the air blown out from the blowout port 21 is increased or decreased at a predetermined cycle, the spiral flow Fa ₁ , Fa ₂ that flows so as to roll along the inner surface 13 a of the window glass 13. Are generated, and the contact between the air and the inner surface 13a of the window glass 13 is promoted. Since this air is warm air heated by the heater 61, heat exchange is performed between the warm air and the window glass 13, and the effect of evaporating water droplets adhering to the inner surface 13a of the window glass 13 is increased. It becomes possible to suppress fogging.

  At this time, the control device 24 controls the heater 61 based on the inner surface temperature of the window glass 13 detected by the temperature sensor 62 so that the temperature of the air blown out from the outlet 21 becomes an appropriate temperature. For example, when the outside air temperature is lowered, the inner surface temperature of the window glass 13 is also lowered, so that the heating capacity of the air by the heater 61 is increased.

  Thus, in the anti-fogging device of Example 5, the heater 61 that heats the air blown from the outlet 21 and the temperature sensor 62 that detects the surface temperature of the window glass 13 are provided. Based on the detection result of the sensor 62, the heater 61 is controlled so that the temperature of the air blown out from the outlet 21 can be adjusted.

  Therefore, by adjusting the temperature of the air blown from the outlet 21 by the heater 61 based on the temperature of the window glass 13, it is possible to efficiently supply the air at the appropriate temperature along the window glass 13. Window glass fogging can be suppressed. Further, the air blown out from the blowout port 21 becomes a spiral flow that continuously advances along the inner surface 13 a of the window glass 13, so that the blown air is properly supplied to a predetermined region of the window glass 13. Thus, the occurrence of cloudiness can be suppressed.

  In the fifth embodiment, the temperature sensor 62 for detecting the temperature of the inner surface 13a of the window glass 13 is provided, and the heater 61 is controlled based on the inner surface temperature of the window glass 13. A humidity sensor that detects humidity may be provided, and the heater 61 may be controlled based on the internal humidity of the window glass 13.

  FIG. 11 is a schematic diagram illustrating an anti-fogging device according to Embodiment 6 of the present invention. In addition, the same code | symbol is attached | subjected to the member which has the function similar to the Example mentioned above, and detailed description is abbreviate | omitted.

  In the anti-fogging device of Example 6, as shown in FIG. 11, the window glass 13 is supported by the frame 12, and the outlet 21 is provided below the window glass 13 in the frame 12. A slit shape along the horizontal direction is formed on the lower edge of the glass 13. The blower port 21 is connected to a blower 23 via an air supply pipe 22.

  In the present embodiment, the suction port 71 is provided on the upper side of the window glass 13 in the frame 12 so as to face the blowout port 21, and has a slit shape along the substantially horizontal direction on the upper edge of the window glass 13. Yes. The suction port 71 is connected to a blower 73 via an air discharge pipe 72.

Therefore, if the air is blown out from the blowout port 21 and the flow velocity of the air blown out from the blowout port 21 is increased or decreased at a predetermined cycle, the spiral flow Fa ₁ , Fa ₂ that flows so as to roll along the inner surface 13 a of the window glass 13. , And spiral-shaped flows Fb ₁ , Fb ₂ ... Flowing away from the inner surface 13 a of the window glass 13 are generated. Here, the spiral-shaped flows Fa ₁ , Fa ₂ ... Flowing along the inner surface 13a of the window glass 13 promote the contact between the air and the inner surface 13a of the window glass 13, and the air (warm air) and the window glass. The heat exchange is performed with the glass 13, and the effect of evaporating water droplets adhering to the inner surface 13a of the window glass 13 is increased, and clouding can be suppressed.

Then, the flow _Fa 1 of vortex tube flows to roll along the inner surface 13a of the window glass 13, _Fa 2 · · · or flow _Fb 1 of vortex tube flows to be separated from the inner surface 13a of the window glass 13, Fb ₂ The suction force from the suction port 71 acts, and hardly mixes with the ambient air, and the ambient air mixed with the spiral flow Fb ₁ , Fb _2. Sucked from. Therefore, the in-machine temperature does not increase, and the in-machine temperature and the in-machine humidity are maintained almost constant.

  Thus, in the anti-fogging device of Example 6, while providing the blowing port 21 at the lower edge of the window glass 13, the suction port 71 is provided at the upper edge of the window glass 13 so as to face the blowing port 21. Yes.

  Therefore, the air blown out from the blowout port 21 along the window glass 13 is sucked from the suction port 71 and collected, and after removing fluctuations in the in-machine temperature and cloudiness due to the air blown out from the blowout port 21. It is possible to suppress fluctuations in the in-machine humidity due to damp air. Further, the air blown out from the blowout port 21 becomes a spiral flow that continuously advances along the inner surface 13 a of the window glass 13, so that the blown air is properly supplied to a predetermined region of the window glass 13. Thus, the occurrence of cloudiness can be suppressed.

  FIG. 12 is a schematic configuration diagram illustrating an antifogging apparatus according to Embodiment 7 of the present invention. In addition, the same code | symbol is attached | subjected to the member which has the function similar to the Example mentioned above, and detailed description is abbreviate | omitted.

  In the anti-fogging device of the seventh embodiment, as shown in FIG. 12, the air outlet 21 is provided below the window glass in the frame. On the other hand, the suction port 81 is provided at a predetermined position in the machine, and a pressurizer 84 is connected via an air discharge pipe 82 and an air pump 83, and an expansion nozzle 86 is provided in an outlet pipe 85 of the pressurizer 84. It has been. Therefore, when the air pump 83 is activated, the air in the machine is taken in from the suction port 81, sent to the pressurizer 84 through the air discharge pipe 82, pressurized there, and then cooled by the expansion nozzle 86 through the outlet pipe 85. Can be discharged outside the machine.

  The suction port 87 is provided at a predetermined position outside the machine, and a heat exchanger 89 is connected to the heat exchanger 89 via an air supply pipe 88. The heat exchanger 89 is connected to an air supply pipe and a blower (not shown). A blowout port 21 is provided. Therefore, when the blower is operated, air outside the machine is taken in from the suction port 87 and sent to the heat exchanger 89 through the air supply pipe 88, and this air is heated by exchanging heat with the heat generated in the pressurizer 84. Then, the air can be blown out from the blowout port 21 toward the inside of the machine, that is, the inner surface of the window glass.

  As described above, in the anti-fogging device according to the seventh embodiment, heat exchange is performed by exchanging heat between the pressurizer 84 that pressurizes air sucked from the inside of the machine and the air taken from outside the machine. A device 89 is provided, and air heated by the heat exchanger 89 is blown out from the blowout port 21 along the surface of the window glass.

  Accordingly, the air sucked from the inside of the machine is pressurized by the pressurizer 84, and the air taken from outside the machine is heated by heat exchange with the pressurizer 84 by the heat exchanger 89, and the heated air is It will be blown out along the surface of a window glass from the blower outlet 21, and the air which blows off on the surface of a window glass can be heated efficiently.

  In each of the above-described embodiments, the anti-fogging device of the present invention has been described as applied to a cockpit window in an aircraft. However, it may be a passenger window, or may be applied to a window of an automobile or a ship. Also good.

  The anti-fogging device according to the present invention appropriately sends the blown air to a predetermined region of the window glass by making the air blown from the blow hole into a spiral flow that continuously travels along the surface of the window glass. It is possible to suppress fogging by supplying, and can be applied to any antifogging device or window.

DESCRIPTION OF SYMBOLS 11 Window 12 Frame 13 Window glass 14 Anti-fog apparatus 21 Outlet 22 Air supply piping 23 Blower (vortex tubular flow production | generation means)
24 Control device (vortex tubular flow generating means)
31 Suction port 32 Air exhaust pipe 33 Blower 41 Lid (opening / closing member)
51 Synthetic jet nozzle 61 Heater (heating device)
62 Temperature Sensor 71 Suction Port 72 Air Discharge Piping 73 Blower 84 Pressurizer 89 Heat Exchanger

Claims (10)

A blowout port provided on one side of the window glass and capable of blowing air;
A vortex tubular flow generating means for making the air blown out from the blowout port into a vortex tubular flow that continuously travels along the surface of the window glass;
An anti-fogging device comprising:   The anti-fogging device according to claim 1, wherein the spiral flow generating means includes air blowing means for changing a flow velocity of air blown from the blowing opening at a predetermined interval set in advance.   The antifogging device according to claim 1, wherein the blowout port is disposed at a position spaced apart from the window glass by a predetermined distance.   The vortex tubular flow generating means is provided between the window glass and the blowout port, and a suction port capable of sucking air, and air that changes a flow rate of air sucked from the suction port at predetermined intervals. The anti-fogging device according to any one of claims 1 to 3, further comprising suction means.   The anti-fogging device according to claim 1, wherein the spiral flow generator includes an opening / closing member that opens and closes the outlet at predetermined intervals.   The anti-fogging device according to claim 1, wherein the spiral flow generating means includes a synthetic jet nozzle provided between the window glass and the blowout port.   A temperature sensor that detects a surface temperature of the window glass, a heating device that heats air blown from the blowout port, and a temperature of the air blown from the blowout port by controlling the heating device based on a detection result of the temperature sensor The anti-fogging device according to any one of claims 1 to 6, further comprising a control device for adjusting   The antifogging device according to any one of claims 1 to 7, wherein a suction port for sucking air is provided on one side of the window glass facing the blowout port.   A pressurizer that pressurizes air sucked from the room and a heat exchanger that heats the air taken from the outside by exchanging heat with the pressurizer is provided, and the outlet is heated by the heat exchanger. The defogging apparatus according to any one of claims 1 to 7, wherein the blown air is blown out along the surface of the window glass. A frame-shaped frame;
A window glass supported by the frame;
A blowout port provided in the frame and capable of blowing air toward the window glass;
A vortex tubular flow generating means for making the air blown out from the blowout port into a vortex tubular flow that continuously travels along the surface of the window glass;
A window characterized by comprising.

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