JP2009210234A - Ventilation system - Google Patents

Abstract

A ventilator for supplying outside air into a room cannot change the direction of the blown airflow blown out into the room and cannot reach the distant airflow. There is a problem that there is no problem, and it is possible to change the wind direction of the blown airflow, and to achieve comfort by allowing the airflow to reach farther.
A louver 22 includes a plurality of louvers 22 capable of changing a wind direction of a blown airflow blown from an air supply port 19, and the louver 22 includes a rotating portion 21 and a curved portion 23 that curves outwardly around the rotating shaft 21; It is configured to open outward from the center of the wind tunnel 2, and the air supply port 19 is divided into upper and lower parts of the front panel 17, and the direction of the airflow flowing through the air supply path 14 is bent outward. After that, by attaching the airflow along the curved portion 23, the two upper and lower blown airflows are joined to provide straightness, and the airflow can reach farther.
[Selection] Figure 1

Description

  The present invention relates to a ventilator that constantly ventilates an indoor environment such as a living room with a ventilator for 24 hours.

  Conventionally, this type of ventilator is known to perform ventilation by replacing the air inside and outside the house by attaching to the wall surface of the house and supplying air.

  Hereinafter, an example of the ventilator will be described with reference to the drawings.

As shown in the figure, a main body 102 provided in a wind tunnel 101 that communicates indoors and outdoors, an air supply impeller 103 and an air supply motor 104 that suck in outdoor air and supply the air into the room, and the main body 102 are mounted from the indoor side. A front grill 105 that covers the wind tunnel 101, and a plurality of air supply ports 106 that blow out air to the surface of the front grill 105 facing the air supply impeller 103, thereby blowing outdoor air into the room. It has become.
JP 2000-266383 A

  In such a conventional ventilator, the direction of the blown airflow blown into the room cannot be changed, and the blown airflow is easily attenuated by the surrounding air resistance, and the airflow cannot reach far away. There is a problem that it is impossible to give comfort. Specifically, since the airflow generated by the rotation of the air supply impeller is directly blown into the room, the airflow direction of the blown airflow cannot be changed, and the entire periphery of the blown airflow is not indoors. Since the blown airflow having a speed is in contact with air, the area where the blown airflow having a speed is subjected to resistance by the air in the stationary room is large, and the speed of the blown airflow is easily attenuated by the air resistance, so that the blown airflow cannot be delivered far away.

  The present invention solves such a conventional problem, and can change the wind direction of the blown airflow, and have the straight airflow to the blown airflow, so that the airflow can reach the distant place to hit the human body. It aims at providing the ventilator which can obtain comfort.

  In order to achieve the above-mentioned goal, the ventilator of the present invention supplies a room with a main body that is inserted from the room side into a cylindrical wind tunnel that communicates with the interior and exterior of the wall surface, and the outside air is taken into the body. A plurality of airflow paths and air supply fan motors, a front panel that is larger than the diameter of the wind tunnel on the indoor side of the main body, and an air supply port that blows out outside air, and the direction of the airflow blown out from the air supply port can be changed The louver has a rotating shaft and a curved portion that curves outward around the rotating shaft, and is configured to open outward from the center of the wind tunnel. The airflow is attached along the curved portion of the louver after the direction of the airflow flowing through the air supply path is bent outward.

  By this means, it is possible to change the airflow direction of the blown airflow, and to obtain a ventilator capable of making the blown airflow straight and allowing the airflow to reach further.

  The other means includes an outside temperature measuring means for measuring the outside air temperature and an inside temperature measuring means for measuring the room temperature inside the main body, and calculates a feeling of heat that is felt when an air flow at outside temperature is exposed to the human body. A control unit is provided that includes a control unit that controls the direction of the blown airflow by moving the louver depending on conditions. The outside air temperature measured by the outside air temperature measuring unit is equal to or higher than a predetermined reference temperature, and the outside air temperature is measured in the room temperature. When the temperature is lower than the room temperature measured by the means, the cool feeling condition, and when the calculated value calculated by the calculation unit is equal to or greater than the predetermined value, the direction of the air flow blown out from the air supply port by the louver When the calculation value calculated by the calculation unit is less than the set value, the wind direction of the blown airflow is set as the ceiling surface direction.

  The other means includes an activity amount estimating means for estimating the amount of activity of the human body necessary when calculating the thermal sensation by the calculating section, and the activity amount estimating means performs a calculation weighted according to the activity amount. It is.

  Another means is that the activity amount estimation means includes an illuminance detection means capable of detecting the brightness of the room on the front panel, and estimates the amount of activity of the human body by judging the awakening time and the sleeping time based on the brightness of the room. It is.

  As another means, the activity amount estimation means includes a human body detection means for detecting the position of the human body on the front panel, and reads the position change of the human body by the human body detection means to estimate the activity amount.

  The other means includes a human body detecting means for detecting a human body in the front panel on the front panel, and when the human body is not detected by the human body detecting means in a cool breeze condition, the wind direction of the blown airflow is set to the ceiling surface direction and the floor surface direction. It is a thing.

  The other means includes a storage means for storing the room temperature measured by the room temperature measurement means, and when the human body is not detected by the human body detection means, the blown air flow blown out from the air supply port by the louver in a cool wind condition When the air temperature is blown out in the direction of the ceiling surface for a certain period of time, the room temperature measured by the room temperature measuring means is memorized, and the air temperature of the blown airflow is changed to the floor surface direction and then blown out for a certain period of time before the room temperature is measured again In addition, when the difference from the previous measured value is equal to or higher than a predetermined temperature, the wind direction of the blown airflow is the ceiling surface direction.

  Further, the other means measures the room temperature by the room temperature measuring means at regular intervals in the cool wind condition and stores it in the storage means, and if the measured value of the room temperature exceeds the previous measured value, the control means As a result, the rotational speed of the air supply fan motor is increased to further increase the air supply amount.

  Another means is provided with a display unit for displaying an indication of the air supply amount on the appearance of the front panel.

  As another means, the front panel is configured to be removable from the indoor side, and the control means is housed inside the front panel, and is provided outside the wind tunnel and on either the left or right side of the front panel. A louver drive motor is provided on the rotating shaft of the louver, and the louver drive motor is disposed in the vicinity of the control means and includes a control box that covers the louver drive motor and the control means.

  In addition, the other means is configured such that the air supply opening can be opened and closed by a louver, and the air supply opening that blows outside air along the wall surface is provided on the side surface of the front panel. The airflow is blown out from the air supply port, and in the case of cool conditions, the rotation speed of the air supply fan motor is increased to increase the amount of air supply, and the louver is opened to switch the airflow out of the air supply port. In the case of cool air conditions, the rotational speed of the air supply fan motor is increased after the louver is operated to open the air supply port.

  Another means includes an exhaust path and exhaust fan motor for exhausting indoor air to the outside inside the main body, and an exhaust port for sucking in indoor air on the front panel. Is sucked from the exhaust port, passed through the exhaust path, and exhausted to the outside of the room, so that air supply and exhaust can be performed simultaneously.

  In addition, another means is provided with a switch that can manually stop the operation of the air supply fan motor, and when the air supply fan motor is stopped, the air supply port is closed by the louver, so that the cool feeling condition is met. The louver is not movable.

  According to the present invention, there is an effect that comfort can be obtained by providing an appropriate air flow to the human body as necessary to obtain a cool feeling.

  In addition, there is an effect that an increase in room temperature can be suppressed and the indoor environment can be kept comfortable by eliminating temperature unevenness.

  In addition, there is an effect that energy can be saved by motivating the resident to stop the operation of the air conditioner such as an air conditioner.

  In addition, there is an effect that maintenance within the main body is easy and the number of parts can be reduced.

  Moreover, there is an effect that noise such as wind noise is suppressed and the resident is not uncomfortable.

  The invention according to claim 1 of the present invention includes a main body inserted from the indoor side into a cylindrical wind tunnel communicating with the inside and outside of the wall, an air supply path for taking in outside air into the main body and supplying the air into the room, and The air supply fan motor, the front panel that is larger than the diameter of the wind tunnel on the indoor side of the main body, and the air supply port that blows outside air, and a plurality of plate-like shapes that can change the direction of the blown airflow blown from the air supply port It has a louver, and the louver has a rotating part and a curved part that curves outwards around the rotating axis, and is configured to open outward from the center of the wind tunnel. The airflow is attached along the curved part of the louver after the direction of the airflow flowing through the air supply path is bent outward, and the direction of the airflow can be easily adjusted by moving the louver. Changeable and front panel By combining the blown air flow blown out from the upper and lower divided air supply ports and reducing the contact between the blown air flow having speed and the stationary indoor air and making it less susceptible to frictional resistance, Thus, it has a function of being able to have straightness and reach the distant airflow far.

  Further, the invention according to claim 2 of the present invention is provided with an outside temperature measuring means for measuring the outside air temperature and an inside temperature measuring means for measuring the room temperature inside the main body, and the human body is exposed to an air current at outside temperature. With a calculation unit that calculates the thermal sensation to be felt, and includes a control unit that controls the wind direction of the blown airflow by moving the louver according to the condition, and the outside air temperature measured by the outside air temperature measuring unit is equal to or higher than a predetermined reference temperature, When the outside air temperature is lower than the room temperature measured by the room temperature measuring means, the cool sensation condition is set. When the calculated value calculated by the calculation unit is not less than the predetermined value under the cool sensation condition, the louver blows out the air supply port. When the wind direction of the blown airflow is the floor surface direction and the calculated value calculated by the calculation unit is less than the set value, the wind direction of the blown airflow is the ceiling surface direction, and the resident feels cool The airflow can be applied to the occupant by the airflow in the floor direction to obtain a cool breeze, and if the occupant feels cold, the airflow can be applied directly to the occupant by setting the airflow to the ceiling surface. Has the effect of not.

  The invention according to claim 3 of the present invention further includes an activity amount estimating means for estimating the amount of activity of the human body necessary when calculating the thermal sensation by the calculating section, and the activity amount estimating means according to the activity amount. The weighted calculation is performed, and the thermal feeling of the human body can be determined more accurately, and the cool feeling can be obtained by applying an airflow that the human body feels cool.

  According to a fourth aspect of the present invention, the activity amount estimation means includes an illuminance detection means capable of detecting the brightness of the room on the front panel, and determines the awakening time and the sleeping time based on the brightness of the room. The amount of activity of the human body is estimated, and the thermal sensation of the human body can be determined more accurately, and the coolness can be obtained by applying an airflow that the human body feels cool.

  In the invention according to claim 5 of the present invention, the activity amount estimating means includes a human body detecting means for detecting the position of the human body on the front panel, and the human body detecting means reads the position change of the human body to estimate the activity amount. Therefore, it is possible to more accurately determine the thermal feeling of the human body and to obtain a cool feeling by applying an air flow that the human body feels cool.

  Further, in the invention according to claim 6 of the present invention, when the human body is not detected by the human body detecting means in the cool wind condition, the wind direction of the blown airflow is set to the ceiling surface direction and the floor surface direction, Since it can be efficiently distributed to the space, the effect of stirring the outside air and the room air is high, and the effect of suppressing the temperature rise in the room can be enhanced.

  Further, the invention according to claim 7 of the present invention is provided with storage means for storing the room temperature measured by the room temperature measurement means, and when the human body is not detected by the human body detection means in a cool wind condition, the air is supplied by the louver. After blowing the wind direction of the blown airflow blown out from the mouth in the direction of the ceiling surface for a certain time, after memorizing the room temperature measured by the room temperature measuring means, changing the wind direction of the blown airflow to the floor surface direction and blowing out for a certain time When measuring the room temperature again, if the difference from the previous measured value is equal to or higher than the reference temperature, the wind direction of the blown airflow is the ceiling surface direction, and if the wind direction of the blown airflow is blown out in the ceiling surface direction, The blowing airflow continues to flow along the ceiling surface due to the adhesion effect, flows downward through the wall surface opposite to the wall surface where the main body is installed, and then flows around the room from the floor surface toward the main body, Since a lot of air near the floor gathers in the vicinity of the body, the temperature measured by the room temperature measuring means becomes the temperature near the floor, and conversely if the wind direction of the blown airflow is blown out in the direction of the floor, Since the air around the ceiling gathers in the vicinity of the main body as a flow around the room, the measurement temperature becomes the temperature near the ceiling, so the temperature variation in the room, that is, the temperature difference between the ceiling and the floor is measured. If the temperature difference is equal to or higher than a predetermined temperature, it is possible to reduce the temperature of the air near the ceiling by blowing outside air having a temperature lower than the room temperature in the direction of the ceiling, thereby suppressing indoor temperature unevenness. Has an effect.

  In the invention according to claim 8 of the present invention, the indoor temperature is measured at regular intervals by the room temperature measuring means in the cool wind condition and stored in the storage means, and the measured value of the room temperature is the previous measured value. If exceeded, the control means increases the rotation speed of the air supply fan motor to further increase the air supply amount. By introducing more outside air into the room, the effect of suppressing the temperature rise in the room is enhanced. Can do. On the other hand, when the room temperature decreases, the air supply amount can be reduced to suppress the temperature decrease in the room.

  Further, the invention according to claim 9 of the present invention is provided with a display unit that displays an indication of the air supply amount on the appearance of the front panel, and allows the resident to recognize that the outside air temperature is low, The person himself can act as a motivation for actions such as stopping the cooling operation of the air conditioner.

  In the invention according to claim 10 of the present invention, the front panel is configured to be detachable from the indoor side, the control means is housed inside the front panel, and is located outside the wind tunnel and on either the left or right side of the front panel. Equipped with a louver drive motor on the rotating shaft of the louver that opens and closes the air supply port, the louver drive motor is disposed near the control means, and has a control box that covers the louver drive motor and the control means, By consolidating electrical components in one place, the main body can be reduced in size and the number of components can be reduced. Moreover, when removing the front panel and cleaning the inside of the main body, it has an effect that cleaning becomes easy.

  Further, according to an eleventh aspect of the present invention, the air supply opening is configured to be openable and closable by the louver, and the air supply opening that blows outside air along the wall surface is provided on the side surface of the front panel. Airflow is blown out from the air supply port by closing the airway, and in the case of cool sensation conditions, the air supply fan motor speed is increased to increase the amount of air supply and the louver is opened to blow out airflow from the air supply port. In the case of cool air conditions, the number of rotations of the air supply fan motor is increased after the louver is operated and the air supply opening is opened. Reduces the air supply amount and constantly blows out the airflow along the wall surface from the air supply port and attaches it to the wall surface, and heats the airflow near the wall surface temperature by heat transfer between the airflow temperature and the wall surface temperature. Do With this, the influence on the human body's thermal sensation can be reduced, and the air supply volume can be increased and the air flow with a high degree of straightness can be blown out from the air supply port quickly and widely when the cool sensation conditions are met. By increasing the air supply amount after opening the air supply port due to the above, there is an effect that wind noise generated when the opening of the air supply port is small can be prevented.

  According to a twelfth aspect of the present invention, there is provided an exhaust path and exhaust fan motor for exhausting indoor air to the outside inside the main body, and an exhaust port for sucking indoor air in the front panel. By rotating, it sucks indoor air from the exhaust port, passes through the exhaust path and is exhausted outside the room, and can supply and exhaust air at the same time. Since there is no need to provide an opening and exhaust, the ventilation amount is not changed by the pressure difference between the inside and outside of the room, and the inside of the room can be reliably ventilated.

  Further, the invention according to claim 13 of the present invention is provided with a switch capable of manually stopping the operation of the air supply fan motor, and when the air supply fan motor is stopped, the air supply port is closed by the louver, The louver does not move even if the air is exhausted, and it can be ventilated only with the exhaust fan motor by making the room negative with respect to the outside by exhaust air and allowing the air to be naturally supplied from the air supply air path. In addition, power consumption can be reduced by not moving the louver even under cool conditions.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1)
1 is a side sectional view showing the configuration of the ventilator, FIG. 2 is an exploded perspective view showing the configuration of the ventilator, and FIGS. 3A to 3C are side sectional views showing the state of airflow control of the louvers of the ventilator. 1 to 3, the configuration of the ventilation device will be described.

  As shown in FIG. 1, as an example, a vinyl chloride pipe (equivalent to a VU pipe nominal diameter of 150) as a wind tunnel 2 is installed in a through hole 1 provided to communicate indoors and outdoors on a wall surface of a house, and a ventilator is It is inserted into the wind tunnel 2 from the indoor side and installed on the indoor side wall surface.

  As an example, the ventilator includes, for example, a propeller-type air supply fan 4 that constitutes the air supply fan motor 3, an AC condenser motor as the air supply motor 5, and a propeller-type exhaust fan 7 that constitutes the exhaust fan motor 6. In addition, an AC capacitor motor as the exhaust motor 8 is provided to simultaneously supply and exhaust air.

  The main body 9 of the ventilator is composed of an outer tube 10 whose outer diameter is 2 to 10 mm smaller than the inner diameter of the wind tunnel, and a double tube having an inner tube 11 equivalent to a diameter of about 80 mm inside the outer tube. A flange portion 12 that covers the wind tunnel 2 is formed on the end surface 10 on the indoor side, and is fixed to the wall surface from the flange portion 12 by screws.

  The exhaust fan 7 is provided in the exhaust air passage 13 with the inside of the inner tube 11 as the exhaust air passage 13, and the exhaust fan 7 has a clearance of about 3 mm with respect to the inner diameter of the inner tube 11.

  The supply fan 4 is arranged outside the exhaust fan 7 in series and is provided in the supply air passage 14 with the outside of the inner tube 11 as the supply air passage 14, and the diameter of the supply fan 4 is outside. A clearance of about 3 mm is provided for the inner diameter of the tube 10.

  Further, a part of the air supply fan 4 is provided with a cylindrical boss portion 15 corresponding to the diameter of the inner tube 11, and the inner peripheral side of the boss portion 15 is a cavity communicating in the axial direction, thereby providing an air supply motor. 8, even if the air supply fan 4 is rotated, the inner peripheral side of the boss portion 15 can supply air while allowing exhaust air to pass therethrough.

  As shown in FIG. 2, the air supply motor 5 is configured to be able to temporarily increase the rotational speed by a control means 16 (for example, a control circuit).

  A front panel 17 that covers the entire flange portion 12 is detachably attached to the flange portion 12 of the main body 9. The front panel 17 communicates with the exhaust air passage 13, an exhaust port 18 that takes in indoor air, and an air supply air passage 14, an air supply port 19 for blowing outside air into the room and a constant air supply port 20 are provided.

  Here, as an example, the air supply port 19 is disposed vertically above and below the exhaust port 18 to have a horizontally long shape, and the installation position of the air supply port 19 is disposed on the outer side with respect to the diameter of the outer tube 10, thereby The airflow flowing through 14 is bent up and down and then blown out from the air supply port 19.

  Further, a louver 22 having a rotation shaft 21 in parallel with the wall surface and horizontally is provided in the vicinity of each air supply port 19 so that the louver 22 can swing from the center of the front panel 17 to the outside.

  The shape of the louver 22 is a plate having a curved portion 23 that curves outward, and the airflow flowing through the supply air passage 14 is bent, and then the airflow is attached to the curved portion 23.

  Thereby, as shown in FIG. 1, it can comprise so that the airflow which blows off from the upper and lower supply port 19 may be merged. Therefore, normally, the front periphery of the blown airflow having velocity comes into contact with the air in the stationary room and receives resistance due to friction, and the velocity of the blown airflow is attenuated. Almost half of the airflow of the airflow becomes a confluence, and the confluence is not subject to air resistance in a stationary room, so the speed is difficult to attenuate, and it becomes a straight airflow, which can send airflow farther into the room it can.

  Here, the movable angle is used as an index indicating the movable state of the louver 22, the variable range of the movable angle of the louver 22 is indicated by 0 ° to 100 °, and the movable angle when the air supply port 19 is fully closed is 0 °. The change of the airflow direction will be described below with the movable angle being 100 ° in the fully opened state.

  As shown in FIG. 3A, the movable angle of the upper louver 22 of the front panel 17 is set to approximately 100 °, and the movable angle of the lower louver 22 of the front panel 17 is set to 50 ° or less so In contrast, as shown in FIG. 3B, the movable angle of the upper louver 22 of the front panel 17 is set to 50 ° or less, and the movable angle of the lower louver 22 of the front panel 17 is set as shown in FIG. By setting the angle to approximately 100 °, the blown airflow can be controlled in the floor surface direction.

  Further, as shown in FIG. 3C, the movable angle of both the upper and lower louvers 22 of the front panel 17 is set to approximately 100 °, so that the air supply port 19 at the upper part of the front panel 17 is directed toward the ceiling surface. It is also possible to blow out the airflow in the floor direction from the air supply port 19 at the lower part of the front panel 17.

  Here, the reason why the air supply ports 19 are arranged above and below the exhaust port 18 is to easily realize a configuration in which the louver 22 is swung up and down to change the blown airflow in the vertical direction. This is because the installation position of the air supply port 19 is arranged on the outer side with respect to the diameter of the outer tube 10 so that the air supply air passage 14 is bent. In this case, since the airflow flowing through the supply air passage 14 is bent left and right, the shape of the louver 22 is a vertical surface provided with a curved portion 23 for adhering the airflow, and a horizontal surface for changing the airflow direction up and down. It is necessary to install a plane of direction, and although it can be realized, it has a complicated configuration.

  Here, the louver 22 is provided with the curved portion 23 because the airflow generated on the boundary surface 24 between the airflow and the curved portion 23 is changed when the airflow direction of the airflow attached to the curved portion 23 is changed by the louver 22. It is for suppressing. The separation phenomenon has the effect that when the airflow moves away from the boundary surface 24, a fine vortex is generated in the vicinity of the boundary surface 24, and the flow velocity of the airflow is attenuated. It is important to blow out the air flow without reducing the flow velocity as much as possible. However, although it is difficult to determine the size of the bending portion 23 that suppresses the peeling phenomenon, as one index, the radius R of the bending portion 23 is the height of the supply air passage 14 in the vertical direction of the bending portion 23. By at least being equal to or more than h, and desirably 2 to 3 times, the direction of the blown airflow can be changed gently, and the energy loss of the blown airflow can be minimized.

  Further, the air supply port 19 can be opened and closed by the louver 22, a louver drive motor 25 (for example, a stepping motor) is connected to the rotating shaft 21, and the air direction of the blown air flow blown from the air supply port 19 is changed by the control means 16. In addition, the opening and closing of the air supply port 19 can be electrically controlled.

  Further, the regular air supply port 20 is provided on the side surface of the front panel 17, and when the air supply port 19 is closed by the louver 22, an air flow is blown out from the regular air supply port 20 in a direction parallel to the wall surface.

  Also, an outside air temperature measuring means 26 (for example, a temperature detection thermistor) for measuring the outside air temperature is provided in the supply air passage 14, and an indoor temperature measuring means 27 (for example, a temperature detection thermistor) for measuring the room temperature is provided in the exhaust air passage 13. It is provided so that the outside air temperature and the room temperature can be measured.

  Further, the control means 16 is provided with a calculation unit 28 (for example, a microcomputer) for calculating a thermal feeling that is felt when the airflow at the outside temperature measured by the outside temperature measuring means 26 is exposed to the human body, and the room temperature measuring means 27 is provided. The storage means 29 (for example, memory) which memorize | stores the indoor temperature measured by (2) is provided.

  Further, the front panel 17 includes an illuminance detection means 31 (for example, an illuminance sensor) as an activity amount estimation means 30 for estimating the amount of activity of the human body, and a human body detection means 32 (for example, an infrared sensor).

  Therefore, the ventilator always uses only the air supply port 20 by closing the louver 22 and closing the air supply port 19 when the air supply and the exhaust are performed at the same time as continuous ventilation for 24 hours ventilation inside and outside the room. When the air is supplied and the room temperature and the outside air temperature are in a cool condition, the louver 22 is opened as an extra charge to open the air supply port 19 and increase the air supply amount. The operating conditions can be switched to blow out.

  Here, as an example of the cool sensation condition, the reference temperature for the outside air temperature is set to 20 ° C., and the outside air temperature is lower than the room temperature so that cool outside air can be taken in at summer night. The reason why the reference temperature is set to 20 ° C. is to exclude a period in which it is not desired to put cold outside air such as winter.

  With the above configuration, regular ventilation ensures a ventilation volume of 0.5 times or more per hour with respect to the volume of the room, thereby discharging harmful substances (eg formaldehyde) in the room to the outside of the room. By maintaining the health and lowering the room temperature by increasing the amount of air supply in cool conditions, by controlling the wind direction of the blown airflow with the louver 22 and making the blown airflow straight, The outside air can be distributed to every corner of the room, and even when the occupant is in the distance, the airflow can be applied to give a cool feeling, so that comfort can be obtained.

  Hereinafter, the operation of the ventilator performed in the cool feeling condition will be described with reference to FIGS. 4 to 8 showing the operation flow of the ventilator and the state of the airflow in the room.

  As shown in FIG. 4, there is a method using PMV (Predicted Mean Vote) as an example of a calculation method for calculating the thermal sensation by the arithmetic unit 28 that calculates the thermal sensation on the human body according to the outside air temperature. Is expressed as a numerical value from PMV = −2 to +2, where PMV = 0 is comfortable, and is evaluated as a warm feeling on the cold side as it becomes minus and on the hot side as it becomes plus.

  Moreover, since the wind speed of the airflow required when calculating PMV is calculated with the wind speed when reaching the human body, it is necessary to predict the wind speed when reaching the human body. Since it is difficult to accurately grasp the wind speed reaching the human body, as an example, the wind speed in the vicinity of the outlet of the air supply port 19 is 2 m / s, and the distance to the human body is 3 m (one side between six square tatami mats). Assuming that the wind speed when reaching the human body is about 0.3 m / s due to distance attenuation, the wind speed used for the calculation may be set in advance assuming 0.3 m / s. .

  Therefore, the PMV is calculated from the outside air temperature supplied to the room and the wind speed of the blown airflow. As an example, the PMV comfort range is assumed to be 0.5 <PMV <−0.5. .5, when PMV <−0.5, control is performed so that the blown airflow is not directly applied to the human body as the ceiling surface direction, and when PMV> −0.5, the blown airflow is directed to the human body as the floor surface direction. A cool feeling can be obtained by hitting, and the indoor environment can be made more comfortable. Further, even when PMV exceeds 0.5, the indoor temperature is higher than the outside air temperature to be introduced under the cool feeling condition, so that a cool feeling can be obtained by applying an air flow of the outside air temperature to the human body.

  In addition, when calculating the thermal sensation of the human body using PMV, the amount of activity obtained by the activity amount estimating means 30 for estimating the amount of activity of the human body (represented by met) is calculated by weighting and calculating more accurately. The thermal sensation can be calculated. This is because the amount of heat generated from the human body changes depending on the amount of activity, and thus the thermal sensation felt by the human body changes even in the same thermal environment, and the thermal environment in which the human body feels comfortable is different. For example, when the room temperature is 28 ° C., the amount of activity when an adult male is cleaning as a human body is 2 mete, and the PMV at that time is about 1.7 and it feels hot, but the activity when sleeping The amount is 0.8 met, and the PMV at that time is about 0.1, giving a warm feeling close to comfort.

  Therefore, it is desirable to consider the amount of activity of the human body when evaluating the thermal sensation.

  Here, the illuminance detection means 31 as the activity amount estimation means 30 installed on the front panel 17 estimates that the human body is active when the room is bright by daytime or lighting, for example, 1.5 met (light If the room is dark, the human body may be assumed to be sleeping, and may be weighted when calculating the PMV as 0.8 met (sleeping).

  In addition, as an example of detecting the position of the human body by the human body detecting means 32 as the activity amount estimating means 30 installed on the front panel 17 and reading the position change, the position is detected every 10 seconds, and the amount of movement per minute As a result, the number of times the position has changed is read out of the 6 times of position information, and if it is different 4 times or more, it is determined as 2.5 met (activity equivalent to housework), and if it is 2 or more and less than 4 times, 1.5 met ( Light weight work activity), 1 met at one time (activity at rest), 0.8 met (at bedtime) when no change, weighting when calculating the PMV, more detailed The amount of activity can be estimated.

  Further, as shown in FIG. 5, when a human body is detected by the human body detection means 32, a thermal sensation is calculated and the blown airflow is controlled in the floor surface direction or the ceiling surface direction, and the human body is not detected. As shown in FIG. 5, the air flow is blown out from the upper air supply port 19 in the direction of the ceiling surface, and the air flow is blown out from the lower air supply port 19 in the direction of the floor surface. By generating two air currents that circulate in the room by the air current and mixing the outside air and the indoor air efficiently, the temperature rise in the room can be suppressed.

  Moreover, as shown to Fig.7 (a), when it continues for 30 to 60 minutes as a fixed time until an airflow stabilizes, blowing out airflow in the direction of a ceiling surface with the louver 22, airflow in a room is from a ceiling surface. Since the airflow flows in an annular shape on the floor surface, and the air near the floor surface gathers around the ventilation device, the temperature of the air near the floor surface can be measured by the room temperature measuring means 27.

  Moreover, as shown in FIG.7 (b), when it continues for 30 to 60 minutes as a fixed time until an airflow stabilizes with blowing airflow blowing in the floor surface direction, it flows circularly from a floor surface to a ceiling surface. It becomes an air current, and the temperature of the air near the ceiling surface can be measured by the room temperature measuring means 27. Here, in general, warm air tends to accumulate near the ceiling surface due to the rising air flow, and cold air gathers near the floor surface. Therefore, the temperature unevenness in the room can be grasped by changing the wind direction of the blown air flow.

  Accordingly, when the room temperature measured by the room temperature measuring means 27 is stored by the storage means 29 and no human body is detected, the opening degree of the upper louver 22 of the front panel 17 is set to approximately 100%, and the lower louver of the front panel 17 is set. By setting the opening degree of 22 to 50% or less, the blown airflow is blown toward the ceiling for a certain period of time, and then the room temperature is measured and memorized. By setting the opening degree of the louver 22 to 50% or less and the opening degree of the louver 22 below the front panel 17 to almost 100%, the air temperature is switched to the floor surface and blown out for a predetermined time, and then the room temperature is measured. Then, the temperature difference from the previous measurement value is calculated by the calculation unit 28, and when the temperature difference is 3 ° C. or more, for example, when the temperature difference is 3 degrees C. There lowering the temperature by sending a low outside air temperature near the ceiling accumulated air, it can maintain a more comfortable state in the room environment by reducing the room temperature unevenness.

Further, the room temperature is measured by the room temperature measuring means 27 every 30 to 60 minutes, for example, until the airflow in the room is stabilized, and stored in the storage means 29, so that the room temperature is the previously measured room temperature. In such a case, the air supply amount is increased. For example, the outside air temperature is 25 ° C., the room temperature is 27 ° C., the indoor human body is an adult, and the activity amount is met = 0.8. In the case of (at bedtime), by setting the air supply amount to about 60 m ³ / h, the balance between the amount of heat generated from the human body and the amount of heat acquired by introducing the outside air is matched, so that an increase in room temperature can be suppressed. Therefore, when the air supply amount is about 60 m ³ / h or less, the room temperature measured after a certain time rises from 27 ° C., and the air supply amount is increased to about 60 m ³ / h to increase the room temperature to 27 The room temperature can be maintained, and the indoor temperature can be made comfortable by suppressing the temperature rise in the room. Here, when the air supply amount is increased, the air supply motor 5 is a DC motor, for example, so that the rotation speed can be changed steplessly, and the air supply amount can be controlled more finely. good.

  Further, in the case of temporary air supply, by operating the louver 22 and opening the air supply port 19 to increase the air supply amount, wind noise generated when air flows through a minute gap when the louver 22 starts to move is reduced. Can be suppressed.

  In addition, the first embodiment of the present invention has the same effect as a ventilator that only supplies air if the ventilation amount can be secured by providing an opening such as an undercut in the lower part of the door, for example. Obtainable.

  As described above, according to the first embodiment of the present invention, it is possible to give the human body a feeling of airflow and to obtain comfort by giving the airflow to a farther distance by imparting straightness to the blown airflow, By changing the direction of the wind according to the temperature unevenness, a ventilation device that can provide a more comfortable indoor environment can be obtained.

(Embodiment 2)
In the second embodiment of the present invention, the same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  In the second embodiment of the present invention, as shown in FIG. 9, a display unit 33 (for example, an indicator) for displaying an air supply amount standard is installed on the exterior of the front panel 17 to display the air supply amount standard. Thus, it is possible to save energy by allowing the occupants to recognize that outside air is being actively introduced into the room and linking the motivation to stop the operation of an air conditioner such as an air conditioner.

  Further, if the switch 34 is installed at a height that can be directly operated by a resident, and the switch 34 is turned off, the rotation of the air supply fan motor 3 can be stopped and only the exhaust fan motor 6 can be operated. . As a result, the indoor air is exhausted only, so that the air is naturally supplied through the air supply air passage 14 so that the room has a negative pressure as compared with the outdoors, so that only the exhaust can be ventilated. Therefore, energy saving can be achieved. Further, since the louver 22 does not move even in a cool wind condition, the louver drive motor 25 does not operate, and electric energy is not consumed, thereby saving energy. This is effective, for example, when the resident is absent for a long time.

  As described above, according to the second embodiment of the present invention, the cooling action by the outside air is recognized to motivate the occupant to reduce the cooling load by the air conditioner. In addition, the air supply fan motor 3 and the louver drive motor 25 are provided when absent. Since it can be made not to operate, energy saving can be achieved.

(Embodiment 3)
In the third embodiment of the present invention, the same parts as those in the first and second embodiments are denoted by the same reference numerals, and detailed description thereof is omitted.

  In the third embodiment of the present invention, as shown in the exploded perspective view of the ventilator in FIG. 10, the control means 16 is housed inside the front panel 17 and is disposed outside the wind tunnel 2 and on the side surface of the front panel 17. Thus, the cross-sectional areas of the supply air passage 14 and the exhaust air passage 13 are not narrowed, and the louver drive motor 25 is arranged on the side surface close to the control means 16, so that the control means 16 and the louver drive motor 25 are arranged in the same control box. Since it can be housed in a sealed resin box 35, there is no need to provide a control box 35 for each, and the number of parts can be reduced. In addition, since the electrical components are neatly accommodated, the resident can remove the front panel 17 and clean the main body, so that it is easy to clean.

  The present invention can be applied to a ventilator or an air blower that is installed on a wall surface and blows out an air current, or an air conditioner that performs air conditioning.

Side surface sectional drawing which shows the structure of the ventilation apparatus of Embodiment 1 of this invention Exploded perspective view showing the configuration of the ventilation device (A)-(c) Side surface sectional drawing which shows the state of the airflow control of the louver of the ventilation apparatus Flow diagram for determining the wind direction of the blown airflow with the same thermal feeling Flow diagram for determining the direction of the blown airflow based on human body detection Sectional drawing which shows the state of the airflow in a room | chamber interior when the same blowing airflow is made into a ceiling surface and a floor surface direction (A) Cross-sectional view showing the state of the airflow in the room when the blown airflow is in the ceiling surface direction, (b) Cross-sectional view showing the state of the airflow in the room when the airflow is in the floor surface direction Flow diagram for determining the wind direction of the blown airflow due to the same temperature unevenness The perspective view which shows the external appearance of the ventilation apparatus of Embodiment 2 of this invention The disassembled perspective view which shows the control box of the ventilation apparatus of Embodiment 3 of this invention Sectional drawing which shows an example of the conventional ventilation apparatus

Explanation of symbols

DESCRIPTION OF SYMBOLS 2 Wind tunnel 3 Supply air fan motor 6 Exhaust fan motor 9 Main body 13 Exhaust air path 14 Supply air path 16 Control means 17 Front panel 18 Exhaust port 19 Supply port 20 Constant supply port 21 Rotating shaft 22 Louver 23 Bending part 25 Louver drive Motor 26 Outside air temperature measurement means 27 Indoor temperature measurement means 28 Calculation section 29 Storage means 30 Activity amount estimation means 31 Illuminance detection means 32 Human body detection means 33 Display section 34 Switch 35 Control box

Claims (13)

A main body inserted into a cylindrical wind tunnel communicating with the interior and exterior of the wall surface from the indoor side, an air supply path and an air supply fan motor for taking outside air into the main body and supplying the air into the room, and a chamber of the main body A front panel that is larger than the diameter of the wind tunnel and an air supply port that blows outside air inside, and a plurality of plate-like louvers that can change the wind direction of the airflow blown from the air supply port, A rotating shaft and a curved portion that curves outwardly around the rotating shaft, and is configured to open outward from a center portion of the wind tunnel; and the air supply port is divided into upper and lower portions of the front panel. A ventilating apparatus that is disposed and bent along the curved portion of the louver after the direction of the airflow flowing through the air supply path is bent outward. Inside the main body is equipped with an outside temperature measuring means that measures the outside air temperature and an indoor temperature measuring means that measures the room temperature, and is equipped with a calculation unit that calculates the thermal feeling that is felt when the outside air temperature is exposed to the human body. Control means for controlling the wind direction of the blown airflow by moving the louver according to the above, the outside temperature measured by the outside temperature measuring means is equal to or higher than a predetermined reference temperature, and the outside temperature is measured by the room temperature measuring means. When the temperature is lower than the indoor temperature, the cool air condition is set. When the calculated value calculated by the calculation unit is equal to or greater than a predetermined value under the cool air condition, the wind direction of the blown air flow blown out from the air supply port by the louver is set to the floor. The ventilation device according to claim 1, wherein the ventilation direction is a plane direction, and when the calculated value calculated by the calculation unit is less than a set value, the wind direction of the blown airflow is the ceiling surface direction. The activity amount estimating means for estimating the amount of activity of the human body necessary when calculating the thermal sensation by the calculating section, wherein the activity amount estimating means performs a calculation that is weighted according to the activity amount. 2. The ventilation apparatus according to any one of the above. The ventilator according to claim 3, wherein the activity amount estimation means includes an illuminance detection means capable of detecting the brightness of the room on the front panel, and estimates the amount of activity of the human body based on the brightness of the room by determining when awake and at bedtime. . The ventilator according to claim 3, wherein the activity amount estimation means includes a human body detection means for detecting the position of the human body on the front panel, and the activity amount is estimated by reading a change in the position of the human body by the human body detection means. 6. The human body detecting means for detecting the position of the human body is provided on the front panel, and when the human body is not detected in a cool wind condition, the wind direction of the blown airflow is set to the ceiling surface direction and the floor surface direction. Ventilation device according to. A storage means for storing the room temperature measured by the room temperature measuring means is provided, and when the human body is not detected by the human body detecting means in a cool wind condition, the direction of the air flow blown out from the air supply port by the louver is fixed for a certain period of time. When the room temperature measured by the room temperature measuring means is memorized after being blown out in the plane direction, the previous measurement is performed when the air temperature of the blown airflow is changed to the floor surface direction and the room temperature is measured again after blowing out for a certain time. The ventilator according to claim 6, wherein when the difference from the value is equal to or higher than a predetermined temperature, the wind direction of the blown airflow is the ceiling surface direction. A storage means for storing the room temperature measured by the room temperature measuring means is provided, the room temperature is measured at regular intervals by the room temperature measuring means during a cool air condition, and is stored in the storage means. The ventilator according to any one of claims 2 to 7, wherein when the previous measured value is exceeded, the air supply amount is further increased by increasing the number of rotations of the air supply fan motor by the control means. The ventilation apparatus of any one of Claim 1 to 8 provided with the display part which displays the standard of the air supply amount on the external appearance of a front panel. The front panel is configured to be detachable from the indoor side, and the control means is housed inside the front panel, and is provided on either the left or right side of the front panel outside the wind tunnel and rotates a louver that opens and closes the air supply port. The louver drive motor is provided on the shaft, and the louver drive motor is disposed in the vicinity of the control means, and further includes a control box that covers the louver drive motor and the control means. Ventilation equipment. The louver is configured so that the air supply port can be opened and closed, and is provided with a constant air supply port that blows outside air along the wall surface on the side surface of the front panel. In the cool condition, the air supply fan motor is rotated to increase the amount of air supply, and the amount of air supply is increased, and the louver is opened to switch the air flow to blow out from the air supply port. The ventilator according to any one of claims 2 to 10, wherein, in a cool wind condition, the rotational speed of the air supply fan motor is increased after the louver is operated to open the air supply port. An exhaust path for exhausting indoor air to the outside and an exhaust fan motor inside the main body, and an exhaust port for sucking in indoor air on the front panel, and the exhaust fan motor rotates so that indoor air is discharged from the exhaust port. The ventilation device according to any one of claims 1 to 11, wherein the ventilation device is configured to be sucked in and exhausted to the outside through the exhaust path so that air supply and exhaust can be performed simultaneously. Provided with a switch that can manually stop the air supply fan motor, and when the air supply fan motor is stopped, the air supply port is closed by the louver and the louver is not movable even when a cool condition is met. The ventilation device according to claim 12.

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