JP4254875B2 - Air supply grill for residential ventilation systems - Google Patents

Description

  The present invention relates to an air supply grill used for a residential ventilation system.

  In recent years, due to high airtightness and high thermal insulation of houses, harmful substances such as volatile organic compounds, carbon monoxide, and carbon dioxide generated in the room have become problems, and ventilation is required to discharge these harmful substances to the outdoors. Installation of the system has become mandatory. As the above-mentioned ventilation system, there is one that takes outside air into the living room space through a duct arranged in the ceiling space, and simultaneously discharges the air in the living room space to the outside. The ventilation fan is forcibly ventilated for 24 hours by driving a certain ventilation fan.

  Here, in order to further purify the interior space, it is preferable to install an air cleaner equipped with an electrostatic atomizer as disclosed in Patent Document 1. This is because the charged fine particle liquid discharged from the electrostatic atomizer has various advantages such as high deodorizing effect and sterilizing effect, and this charged fine particle liquid has a small particle size including nanometer size and This is because it has a strong electric charge, so that it has an advantage that the repulsive force of each other floats in the room space for a long time in a wide range and reaches every corner of the space.

  However, it is inefficient in terms of installation space and cost to separately install and use a residential ventilation system and an air purifier having an electrostatic atomizer in this way. Therefore, what can purify the interior space of a living room by effectively combining a residential ventilation system and an electrostatic atomizer is desired.

On the other hand, Patent Document 2 discloses a residential ventilation system including an electrostatic atomizer. However, the electrostatic atomizer used here is configured to be installed inside an intermediate duct fan located in the attic space. Therefore, it is possible to remove odors, bacteria, viruses, etc. adhering to the inner wall surface of the air supply duct disposed in the attic space by the charged fine particle liquid, but stably distribute the charged fine particle liquid in the living room space. It is not possible.
JP 2003-79714 A JP-A-2005-233589

  The present invention has been invented in view of the above-described problems, and is capable of stably discharging charged particulate liquid from an air supply grille for a residential ventilation system toward a room space from the air supply grille. As a subject.

  In order to solve the above-mentioned problems, the present invention is applied to a residential ventilation system installed on the ceiling 1 in order to release the outside air sent through the air supply duct 4 disposed in the ceiling space 3 into the living room space 2. Electrostatic atomizer 13 which is supply grill 6 and applies a high voltage to atomizing electrode 24 which holds the atomized liquid to discharge the charged fine particle liquid, and the charge discharged from electrostatic atomizer 13 A charged fine particle liquid flow path 34 for sending the fine particle liquid into the living room space 2, a variable shunt air passage 29 for introducing a part of the outside air sent through the air supply duct 4 into the charged fine particle liquid flow path 34, and a variable type. It is assumed that a control unit 36 that adjusts the introduction wind speed by driving and controlling the shunt air passage 29 is provided.

  By doing so, even if the amount of outside air introduced into each air supply grill 6 through the air supply duct 4 increases or decreases, regardless of this, the charged fine particle liquid flow path 34 is passed through the variable diversion air path 29. It is possible to stably supply outside air. Therefore, for example, even when the ventilation air speed is appropriately changed for each room space 2, the variable shunt air passage 29 is deformed corresponding to each air supply grill 6 of each room space 2, and the charged fine particle liquid is stored in the room. It is possible to discharge stably into the space 2 at an appropriate wind speed.

  Further, a wind speed sensor 40 for detecting a wind speed introduced through the variable shunt air passage 29 is provided, and the control unit 36 is driven and controlled based on a detection signal of the wind speed sensor 40. Is preferable. In this way, the variable diversion air passage 29 can be accurately controlled based on the actually detected wind speed.

  The invention according to claim 1 is capable of providing an air supply grill for a residential ventilation system as one that can stably discharge charged fine particle liquid from the air supply grille toward a room space. Play.

  In addition to the effect of the invention according to claim 1, the invention according to claim 2 has an effect that the variable diversion air path can be accurately controlled based on the actually detected wind speed.

  Hereinafter, the present invention will be described based on embodiments shown in the accompanying drawings. FIG. 5 shows a main part of a residential ventilation system using an air supply grill 6 as an example in the embodiment of the present invention.

  The ventilation system uses the ceiling back space 3 of a house in which a living room space 2 and a ceiling back space 3 are formed via the ceiling 1, and the air supply disposed in the ceiling back space 3. One end side of the duct 4 is connected to the outdoor air supply grille 5 installed outdoors, and the other end side of the air supply duct 4 is connected to the air supply grille 6 penetrating the ceiling 1 from the room space 2 side. Are connected in communication. Similarly, one end side of the exhaust duct 7 disposed in the ceiling space 3 is connected to an exhaust grill 9 penetrating from the living room space 2 side to the ceiling 1 and the other end of the exhaust duct 7 is connected. The side is connected in communication with an outdoor exhaust grill 8 installed outdoors.

  A large number of the air supply ducts 4 are branched toward the downstream side via the branch pipe portions 10 and the like, and an air supply grille 6 is connected to the downstream end of each branch duct. Further, a heat exchanger 11 that performs heat exchange between the ducts 4 and 7 is interposed in the middle of the flow path of the air supply duct 4 and the exhaust duct 7. In this heat exchanger 11, a ventilation fan (not shown) that creates the air flow in both the ducts 4 and 7 is arranged. By driving this ventilation fan, the air is sucked from the outdoor air supply grill 5 The outside air thus passed passes through the air supply duct 4 and is sent from the air supply grille 6 into the lower room space 2, and the air in the room space 2 passes through the exhaust grille 9 and the exhaust duct 7 from the outdoor exhaust grille 8. It is a structure in which air circulation is continuously performed, such as being discharged outdoors.

  Note that a ventilation fan may be provided in place of the heat exchanger 11. The ventilation fan may be arranged in at least one of the supply duct 4 and the exhaust duct 7 in the ventilation system. Reference numeral 12 denotes a filter, which is interposed between the outdoor air supply grill 5 and the heat exchanger 11 in the air supply duct 4.

  Next, the configuration of the air supply grill 6 of this example will be described in detail with reference to FIGS. 1 to 4, but the directions such as up and down used in the description are based on the state where the air supply grill 6 is mounted on the ceiling 1. And A pipe-shaped outside air flow path 28 refracted in an L-shape when viewed from the side is formed in the body case 14 that forms the outer shell of the air supply grill 6, and one end side of the outside air flow path 28 is located above the body case 14. The outside air introduction port 16 is formed so as to protrude from the side surface to the side. In addition, the outside air discharge port 17 is formed by opening the tip of the other end side of the outside air channel 28 in the lower surface of the main body case 14. The outside air inlet 16 is connected to the air supply duct 4 and the outside air outlet 17 is opened toward the living room space 2.

  In the main body case 14, an electrostatic atomizer 13 for generating a charged fine particle liquid and discharging it into the living room space 2 is incorporated. As schematically shown in FIG. 2, the electrostatic atomizer 13 controls to drive and control the heat exchange unit 18 and the electrostatic atomization unit 19, and the heat exchange unit 18 and the electrostatic atomization unit 19. It consists of part 36. 1 and 2 show the electrostatic atomizer 13 upside down.

  Hereinafter, the electrostatic atomizer 13 will be described in detail. The heat exchange section 18 of the electrostatic atomizer 13 constitutes an atomizing liquid supply means for supplying condensed water as an atomizing liquid to an atomizing electrode 24 to be described later. It consists of the Peltier unit 21 to be formed. The cooling plate 22 provided on the cooling side of the Peltier unit 21 forms a cooling part of the heat exchange unit 18, and the radiation fins 23 provided on the heat dissipation side of the Peltier unit 21 form the heat dissipation unit of the heat exchange unit 18. Structure.

  As shown in FIG. 1, the heat exchanging portion 18 is fixed in such a posture that the radiation fins 23 are located above and the cooling plate 22 is located below. The heat radiating fins 23 are protruded into the flow path upstream of the refracted portion in the outside air flow path 28, and are provided so as to efficiently radiate heat from the heat radiating fins 23 by the outside air sent through the outside air flow path 28. ing.

  From the cooling plate 22 of the heat exchanging section 18, an elongated columnar atomizing electrode 24 is provided so as to project downward. A ring-shaped counter electrode 26 is fixed to the lower end of the frame 25 covering the Peltier unit 21 and the atomizing electrode 24 at a position facing the tip of the atomizing electrode 24 at a predetermined distance below the atomizing electrode 24. I am letting. Further, a high voltage application unit 32 (see FIG. 2) that applies a high voltage between the electrodes 24 and 26 is provided between the atomization electrode 24 and the counter electrode 26. The main body of the electrostatic atomization unit 19 that generates the charged fine particle liquid is formed by the atomization electrode 24, the frame body 25, the counter electrode 26, and the high voltage application unit 32.

  A variable diverted wind that divides the outside air introduced into the outside air passage 28 and supplies it into the electrostatic atomizer 19 at a portion further upstream than the portion where the radiation fins 23 of the outside air passage 28 are located. A path 29 is provided. The variable shunt air passage 29 includes a branch air passage 30 that takes in outside air from the middle of the outside air passage 28 to the frame 25 of the electrostatic atomizer 13, and the branch air passage 30 and the outside air passage 28. And a movable partition wall 31 that separates the two. The partition wall 31 has a downstream end thereof connected to the outer peripheral surface of the electrostatic atomizer 13 such that the angle of the partition wall 31 can be changed. The angle of the partition wall 31 is centered on the connecting portion with the electrostatic atomizer 13. A telescopic actuator 27 for changing the angle is provided. The actuator 27 is driven and controlled by the control unit 36 (see FIGS. 2 and 3), and the control here will be described later.

  Further, in the main body case 14, a charged fine particle liquid flow path 34 is formed penetrating downward from a portion where the charged fine particle liquid is discharged in the electrostatic atomizer 19. In the middle of the flow path of the charged fine particle liquid flow path 34, a wind speed sensor 40 for detecting the wind speed of the outside air introduced through the variable diversion air path 29 is provided, and a detection signal of the wind speed sensor 40 is input to the control unit 36. It is provided to be. The wind speed sensor 40 may be provided in the variable shunt air passage 29.

  A charged particulate liquid discharge port 33 that opens toward the interior space 2 is provided at the downstream end of the charged particulate liquid flow path 34. The charged fine particle liquid discharge port 33 is formed separately from the outside air discharge port 17 on the lower surface of the main body case 14. Between the charged fine particle liquid discharge port 33 and the outside air discharge port 17, the inside of the living room space 2 is formed. A human body detection sensor 15 for detecting the presence of the human body is provided. The detection signal of the human body detection sensor 15 is input to the control unit 36. Note that another sensor such as an odor sensor may be provided instead of the human body detection sensor 15 or together with the human body detection sensor 15, and a detection signal of the sensor may be input to the control unit 36.

  In the air supply grill 6 having the above-described configuration, when the human body detection sensor 15 detects a person in the living room space 2, the control unit 36 that has received this detection signal starts energizing the heat exchanging unit 18 and cools it. The atomizing electrode 24 of the electrostatic atomizing unit 19 is cooled via the plate 22. Outside air is always supplied around the atomizing electrode 24 through the variable diversion air passage 29, and condensed water is directly generated on the atomizing electrode 24 based on the water in the supplied outside air. And if it comes to the stage where the water as an atomization liquid is hold | maintained on the atomization electrode 24, the control part 36 will apply a high voltage between the atomization electrode 24 and the counter electrode 26 by the high voltage application part 32, Water on the atomization electrode 24 is electrostatically atomized at the tip of the atomization electrode 24 to generate a charged fine particle liquid. The control unit 36 controls the generation amount of the charged fine particle liquid in the electrostatic atomizer 13 by changing the discharge current value between the atomizing electrode 24 and the counter electrode 26 and the on / off duty ratio of the intermittent operation. The charged fine particle liquid generated here rides on the diversion flow or ionic wind supplied from the variable diversion air passage 29, passes through the charged fine particle liquid flow path 34, and enters the living room space 2 through the charged fine particle liquid discharge port 33. It is released vigorously.

  FIG. 4 shows control for enlarging or reducing the air path of the variable shunt air path 29. As shown in the figure, the control unit 36 detects the wind speed of the outside air introduced through the variable shunt air passage 29 based on the detection signal of the wind speed sensor 40, and determines whether or not the detected wind speed is within a preset wind speed range. judge. When the detected wind speed is below the set wind speed range, the control unit 36 drives the actuator 27 so that the upstream end of the partition wall 31 rotates upward (in the direction of arrow A in FIG. 1), and the variable shunt air path. 29 enlarges the inlet and the air passage cross section. On the other hand, when the detected wind speed exceeds the set wind speed range, the control unit 36 drives the actuator 27 so that the upstream end of the partition wall 31 rotates downward (in the direction of arrow B in FIG. 1). The inlet of the variable diversion air passage 29 and the air passage cross section are reduced. When the detected wind speed is within the set wind speed range, the control unit 36 does not drive the actuator 27 and maintains the inlet and the cross section of the variable diversion air passage 29 as they are.

  By periodically adjusting the air path based on the wind speed detection as described above, even if the amount of outside air supplied to each air supply grill 6 through the air supply duct 4 increases or decreases, The wind speed of the outside air diverted to the atomizing section 19 and the charged fine particle liquid flow path 34 is maintained within the set wind speed range. The set wind speed range allows the atomizing electrode 24 to generate an appropriate amount of condensed water in the electrostatic atomizing unit 19 and allows the charged fine particle liquid to enter the living room space 2 through the charged fine particle liquid flow path 34. It is set within a range where it can be released at a moderate momentum. A plurality of the set wind speed ranges may be provided, and an arbitrary set wind speed range may be selected by an operation means (not shown) such as an operation panel installed in the living room space 2. Further, the air path variable mechanism of the variable shunt air path 29 is not limited to the structure of the illustrated example using the partition wall 31 and the actuator 27, and may be another structure as long as the air path can be enlarged and reduced. Good.

It is a longitudinal cross-sectional view of an example supply grill in the embodiment of the present invention. It is explanatory drawing of the electrostatic atomizer accommodated in an air supply grill same as the above. It is a control block diagram of an air supply grill same as the above. It is a flowchart which shows the introduction wind speed adjustment of an air supply grill same as the above. It is explanatory drawing which shows the principal part of the ventilation system for houses using an air supply grill same as the above.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Ceiling 2 Living room space 3 Ceiling back space 4 Air supply duct 6 Air supply grill 13 Electrostatic atomizer 29 Variable type diversion air flow path 34 Charged particulate liquid flow path 36 Control part 40 Air speed sensor

Claims (2)

  An air supply grill for a residential ventilation system installed on the ceiling in order to release the outside air sent through the air supply duct arranged in the space behind the ceiling into the room space, and atomizing the atomized liquid. Through an electrostatic atomizer that discharges charged fine particle liquid by applying a high voltage to the electrode, a charged fine particle liquid channel that sends out the charged fine particle liquid discharged from the electrostatic atomizer into the room space, and an air supply duct A variable shunt air passage that introduces a part of the sent outside air into the charged fine particle liquid passage, and a control unit that drives and controls the variable shunt air passage to adjust the introduction air speed. Air supply grill for residential ventilation systems.   A wind speed sensor for detecting a wind speed introduced through the variable shunt air path is provided, and the control unit drives and controls the variable shunt air path based on a detection signal of the wind speed sensor. An air supply grill for a residential ventilation system according to claim 1.

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