JP2007205625A - Ventilating device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a ventilating device for controlling a ventilation air volume by adding the ventilation air volume according to the detected number of persons in a room and indoor air cleanness thereto, and providing a comfortable air quality environment, in the ventilating device detecting the number of persons in the room and the indoor air cleanness to control ventilation. <P>SOLUTION: This ventilating device comprises a head-count detecting means for detecting the number of persons in the room, a cleanness detecting means 5 detecting the indoor air cleanness, a ventilation air volume control means 7 controlling the ventilation air volume by adding the ventilation air volume to a standard ventilation air volume corresponding to a room volume stored in advance according to the number of persons, and a ventilation air volume adding means 6 for further adding the ventilation air volume according to the air cleanness. As the ventilation air volume can be controlled by adding the ventilation air volume to the standard ventilation air volume according to the number of persons in the room and the air cleanness, the standard ventilation air volume can be secured, and also the deterioration of air quality caused by not only a carbon dioxide released from the persons but also by persons' living behaviors can be prevented. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a ventilator that performs control so as to be added to a reference ventilation amount according to the number of people in a room detected by a human sensor and the indoor air cleanliness detected by a cleanness detection means.

  In recent years, in the control of ventilation fans, hydrogen generated by combustion equipment, carbon monoxide and volatile organic gas (VOC) from building materials, raw garbage odor, cooking odor, and traffic when people concentrate on a specific place are suppressed. There is a need for a ventilator that can prevent and ensure the comfort of a living space.

  Conventionally, this type of air conditioner is known to accurately recognize the presence and number of occupants in the room and simultaneously determine their mode, control the air conditioning state according to the mode and simultaneously ventilate appropriately. (For example, refer to Patent Document 1).

  The air conditioner will be described below with reference to FIGS. 24 and 25.

  As shown in FIG. 24, a plurality of human body detection sensors 101 provided in a substantially straight line along the moving direction of the human body at the entrance of the room, a carbon dioxide gas sensor 102 for detecting carbon dioxide in the room, and the human body detection sensor 101 The first recognition means 103 that receives the signal and recognizes the entry / exit of the human body, the second recognition means 104 that recognizes the presence of the human body from the carbon dioxide concentration sensed by the carbon dioxide sensor 102, the first recognition signal and the first recognition signal 2 is provided to determine whether or not a human body is present, and a control unit 107 is provided to receive the determination signal from the determination unit 105 and to control the air conditioner 106. Configured to control.

FIG. 25 shows a layout of the human body sensor. A plurality of human body detection sensors 101 are provided in a straight line along the moving direction of the human body at the entrance of the room. When the human body moves in the direction of entering the room as indicated by the arrows, the human body detection sensor 101 is in the order of S1 → S2 → S3. The first recognition means 103 recognizes the human body and senses the sensing mode. Conversely, when the human body moves in the exit direction, the human body is sensed in the reverse direction of S3 → S2 → S1, and the first recognition means 3 recognizes the sensing mode. Here, when the sensing mode is S1->S2-> S3, the resident's entry is recognized, and when S3->S2-> S1, the exit is recognized.
JP 2000-234782 A

  Such a conventional air conditioner has a human body sensor and a carbon dioxide gas sensor in order to accurately detect the presence of the human body and the amount of activity. However, hydrogen generated from combustion equipment, carbon monoxide and VOC from building materials Because air conditioning control is not performed by garbage odor and cooking odor, and carbon dioxide concentration is substituted for prevention of air quality deterioration, there is a problem that it can not reliably respond to other harmful gases Therefore, it is required to achieve both prevention of deterioration of air quality due to human activities.

  In addition, this air conditioner needs to be used together with a ventilation system at all times, which increases the cost and detects the human body only with the number of detection pulses within a predetermined time, and the number of people cannot be accurately identified. There is a problem that it is not possible to control the amount of ventilation with the amount of ventilation that matches the actual number of people in the room, more accurately detecting the number of people in the room, and ventilation for ensuring the standard ventilation amount and ensuring comfort by the number of people in the room There is a demand for volume control.

  The present invention solves such a conventional problem, detects the number of people in the room at low cost and accurately, and at the same time detects the air cleanliness in the room, and according to the number of people in the room and the air quality in the room. It is an object of the present invention to provide a ventilator capable of performing ventilation amount control capable of adding comfort to a reference ventilation amount and ensuring comfort.

  The ventilation device of the present invention is added to the number of people detecting means for detecting the number of people in the room, the degree of cleanliness detecting means for detecting the cleanliness of the air in the room, and the reference ventilation amount corresponding to the room volume stored in advance according to the number of people. A ventilation amount control means for controlling the ventilation amount and a ventilation amount addition means for further adding the ventilation amount according to the air cleanliness are provided.

  By this means, ventilation control is performed by adding to the standard ventilation volume according to the number of people in the room and the air cleanliness, so ensuring the standard ventilation volume and not only the carbon dioxide released from the person, but also human activities Thus, a ventilation device that can prevent the deterioration of air quality with respect to the above is obtained.

  The number of people detecting means is controlled so that one infrared sensor, infrared condensing means for selectively transmitting and condensing infrared light from a person, and intermittently incident infrared light and appropriately switching the incident direction. And a number determination means for determining the number of persons from the induced voltage distribution of the infrared sensor generated by the difference between the reference infrared light when blocked by the chopper means and the infrared light of the target area. Is.

  By this means, the number of people in the room is detected in a simpler way, and the amount of ventilation in the room is added to the reference amount of ventilation according to the number of people in the room and the air cleanliness. In addition to carbon dioxide released from the air, a ventilation device that can prevent deterioration in air quality due to human daily activities can be obtained.

  Furthermore, the number-of-persons detecting means controls at least two or more infrared sensors, a rotating means for controlling the infrared sensors to rotationally scan, and intermittently incident infrared light and appropriately switching the incident direction. It is configured to include chopper means and number determination means for determining the number of persons from the induced voltage distribution of the infrared sensor generated by the difference between the reference infrared light when blocked by the chopper means and the infrared light of the target area. It is.

  By this means, ventilation control is performed by adding to the reference ventilation according to the number of people in the room and the air cleanliness detected more accurately by the person detection means. It is possible to obtain a ventilator that can prevent deterioration of air quality due to not only carbon but also human daily activities.

  In addition, the rotation source and the chopper means have the same drive source.

  By this means, the configuration of the number of persons detection means can be simplified, and at the same time, the amount of ventilation is controlled by adding to the reference ventilation according to the number of people in the room and the air cleanliness. In addition to carbon dioxide released from the air, a ventilation device that can prevent deterioration in air quality due to human daily activities can be obtained.

  Further, the infrared condensing means is a Fresnel lens.

  By this means, the number-of-people detection means can collect infrared rays over a wide range even when the detection target area is wide, and can have a wide field of view as a detection target with a simple configuration. In order to control the ventilation volume by adding to the standard ventilation volume according to the number of people and the air cleanliness, ensuring the standard ventilation volume and not only the carbon dioxide released from the person, but also the deterioration of the air quality with respect to human living activities A ventilation device that can be prevented beforehand is obtained.

  The infrared condensing means is a silicon lens.

  By this means, by selectively transmitting and condensing infrared light having a wavelength of about 10 μm emitted from a person, the sensitivity to detecting the number of people in the room can be increased, and the number of people in the room can be accurately determined. At the same time, because the ventilation control is performed by adding to the reference ventilation according to the number of people in the room and the air cleanliness, not only the reference ventilation but also the carbon dioxide released from the person, It is possible to obtain a ventilator that can prevent the deterioration of air quality due to daily activities.

  Further, the infrared sensor is arranged in the non-rotating scanning direction.

  By this means, since the narrow field of view where the infrared sensor is not arranged is rotationally scanned, even if the detection target area of the infrared sensor is wide, it is possible to cope with the widening of the angle by rotational scanning. Since the ventilation control is performed by adding to the reference ventilation according to the air cleanliness, not only the reference ventilation but also the deterioration of the air quality due to the human activities as well as the carbon dioxide released from the person. A ventilation device can be obtained that can be prevented.

  Moreover, it is set as the structure provided with the discrimination means which discriminate | determines a person and a fixed heat source from the time variation | change_quantity of the induced voltage distribution to an infrared sensor.

  By this means, it is possible to distinguish between a fixed heat source and a person, so that it is possible to predict the carbon dioxide released from a person with high accuracy, and at the same time add it to the reference ventilation according to the number of people in the room and the air cleanliness. Therefore, a ventilation device that can prevent the deterioration of the air quality due to not only the carbon dioxide released from the person but also the person's daily activities can be obtained.

  Further, the apparatus includes a position determination unit that determines the position of the person or the fixed heat source from the induced voltage distribution signal from the infrared sensor.

  By this means, it is possible to specify the position of a person or a fixed heat source, and at the same time, to control the ventilation volume by adding to the reference ventilation volume according to the number of people in the room and the air cleanliness, ensuring the reference ventilation volume, It is possible to obtain a ventilator that can prevent deterioration of air quality due to not only carbon dioxide released from a person but also a person's daily activities.

  Moreover, it is set as the structure provided with the 2nd ventilation volume control means which controls so that ventilation volume may be increased or decreased according to a person's position.

  By this means, the ventilation volume, that is, the ventilation speed can be controlled according to the position of the person or the fixed heat source, and at the same time, the ventilation volume is controlled by adding to the reference ventilation volume according to the number of people in the room and the air cleanliness. Therefore, it is possible to obtain a ventilator that can prevent the deterioration of the air quality due to the securing of the reference ventilation amount and not only the carbon dioxide released from the person but also the daily activities of the person.

  Furthermore, it is set as the structure provided with the alerting | reporting means which alert | reports forgetting to turn off when the number of people in a room becomes zero.

  By this means, it is possible to prevent wasteful ventilation operation when absent, and at the same time it is effective for energy saving, and at the same time, the ventilation volume control is performed by adding to the reference ventilation volume according to the number of people in the room and the air cleanliness. It is possible to obtain a ventilator that can prevent the deterioration of the air quality due to the securing of the reference ventilation amount and not only the carbon dioxide released from the person but also the daily activities of the person.

  In addition, when the total value of the ventilation volume to be added and the reference ventilation volume calculated according to the number of people in the room exceeds the ventilation capacity, a caution means for notifying and warning of the lack of ventilation volume is provided.

  By this means, if the ventilation volume becomes unacceptable, it is possible to notify the lack of ventilation volume, and at the same time, the ventilation volume control is performed by adding to the reference ventilation volume according to the number of people in the room and the air cleanliness. It is possible to obtain a ventilation device that can prevent the deterioration of the air quality due to the securing of the ventilation amount and not only the carbon dioxide released from the person but also the daily activities of the person.

  Further, the cleanliness detection means includes a carbon dioxide sensor.

  By this means, the ventilation control is performed by adding to the reference ventilation according to the number of people in the room and the carbon dioxide concentration, so that the reference ventilation is ensured and the air quality is deteriorated against carbon dioxide released from the person. A ventilator that can be prevented is obtained.

  Moreover, the cleanliness detection means is configured to include a smoke sensor.

  By this means, in order to control the ventilation volume by adding to the reference ventilation volume according to the number of people in the room and the hydrogen and carbon monoxide generated from the combustion equipment, ensuring the reference ventilation volume, carbon dioxide released from the person, And the ventilation apparatus which can prevent the deterioration of the air quality with respect to a person's living act beforehand is obtained.

  Further, the cleanliness detection means includes a formaldehyde sensor.

  By this means, the ventilation rate is controlled by adding to the reference ventilation amount according to the number of people in the room and the formaldehyde concentration generated from the building materials. Therefore, ensuring the reference ventilation amount, carbon dioxide released from people, and A ventilation device capable of preventing deterioration of air quality due to volatile gas can be obtained.

  In addition, the cleanliness detection means includes a dust sensor.

  By this means, the ventilation rate is controlled by adding to the reference ventilation amount according to the number of people in the room, the daily activities of the person and the dust from the building, or the amount of pollen flowing in from the outside. A ventilation device capable of preventing deterioration of air quality can be obtained.

  According to the present invention, the number detection means for detecting the number of people in the room, the cleanness detection means for detecting the indoor air cleanliness, and the reference ventilation amount corresponding to the room volume stored in advance according to the number of persons is added. By adding a ventilation amount control means for controlling the ventilation amount and a ventilation amount addition means for further adding the ventilation amount according to the air cleanliness, it is added to the reference ventilation amount according to the number of people in the room and the air cleanliness. Therefore, it is possible to provide a ventilator that can prevent the deterioration of the air quality due to not only the carbon dioxide released from the person but also the daily life of the person, as well as the reference ventilation amount.

  The number of people detecting means is controlled so that one infrared sensor, infrared condensing means for selectively transmitting and condensing infrared light from a person, and intermittently incident infrared light and appropriately switching the incident direction. And a number determination means for determining the number of persons from the induced voltage distribution of the infrared sensor generated by the difference between the reference infrared light when blocked by the chopper means and the infrared light of the target area. In addition to detecting the number of people in the room in a simpler way and adding to the standard ventilation volume according to the number of people in the room and the air cleanliness, the ventilation volume control is performed. It is possible to provide a ventilator that can prevent deterioration of air quality due to not only the released carbon dioxide but also human daily activities.

  Furthermore, the number-of-persons detecting means controls at least two or more infrared sensors, a rotating means for controlling the infrared sensors to rotationally scan, and intermittently incident infrared light and appropriately switching the incident direction. It is configured to include chopper means and number determination means for determining the number of persons from the induced voltage distribution of the infrared sensor generated by the difference between the reference infrared light when blocked by the chopper means and the infrared light of the target area. In order to control the ventilation volume by adding to the reference ventilation volume according to the number of people in the room and the air cleanliness detected more accurately by the number of people detection means, ensuring the reference ventilation volume and only carbon dioxide released from people In addition, it is possible to provide a ventilator that can prevent deterioration of air quality due to human activities.

  In addition, by using the same driving source for the rotating means and the chopper means, the structure of the person detecting means can be simplified, and at the same time, it is added to the reference ventilation according to the number of people in the room and the air cleanliness. Therefore, it is possible to provide a ventilator that can prevent the deterioration of the air quality due to not only the carbon dioxide released from the person but also the daily life of the person, as well as the reference ventilation amount.

  Furthermore, the infrared condensing means is constituted by a Fresnel lens, so that the number detection means can collect infrared rays over a wide range even when the detection target area is wide, and has a simple structure and a wide field of view. Can be detected at the same time, and the amount of ventilation is controlled by adding to the reference ventilation according to the number of people in the room and the cleanliness of the air. In addition, it is possible to provide a ventilator that can prevent deterioration of air quality due to human activities.

  In addition, the infrared condensing means is composed of a silicon lens, and selectively transmits and condenses infrared light having a wavelength of about 10 μm emitted from a person, thereby increasing the sensitivity for detecting the number of people in the room. It is possible to raise the number of people in the room with high accuracy, and at the same time, the amount of ventilation in the room is controlled by adding to the standard amount of ventilation according to the number of people in the room and the air cleanliness. It is possible to provide a ventilator that can prevent deterioration of air quality due to not only carbon dioxide released from a person but also a person's daily activities.

  Further, since the infrared sensor is arranged in the non-rotating scanning direction, the narrow field of view where the infrared sensor is not arranged is rotated and scanned. At the same time, it is possible to respond by widening the angle, and at the same time, the amount of ventilation is controlled by adding to the reference ventilation according to the number of people in the room and the air cleanliness. In addition, it is possible to provide a ventilator that can prevent deterioration of air quality due to human activities.

  In addition, since the configuration includes a discriminating unit that discriminates the person and the fixed heat source from the amount of time variation of the induced voltage distribution to the infrared sensor, the fixed heat source and the person can be distinguished. At the same time that it can predict with high accuracy of carbon, it adds to the standard ventilation volume according to the number of people in the room and the cleanliness of the air to control the ventilation volume, so ensuring the standard ventilation volume and only carbon dioxide released from people In addition, it is possible to provide a ventilator that can prevent deterioration of air quality due to human activities.

  Furthermore, by comprising a position determination means for determining the position of a person or a fixed heat source from the induced voltage distribution signal from the infrared sensor, the position of the person or the fixed heat source can be specified, and at the same time, Since the ventilation control is performed by adding to the reference ventilation according to the air cleanliness, not only the reference ventilation but also the deterioration of the air quality due to not only the carbon dioxide released from the person but also the daily activities of the person in advance. A ventilation device that can be prevented can be provided.

  In addition, it is possible to control the ventilation volume, that is, the ventilation speed according to the position of the person or the fixed heat source by providing the second ventilation volume control means for controlling the ventilation volume to be increased or decreased according to the position of the person. At the same time, because the ventilation control is performed by adding to the reference ventilation according to the number of people in the room and the air cleanliness, not only ensuring the reference ventilation and carbon dioxide released from the person, but also the life of the person. It is possible to provide a ventilator that can prevent air quality from deteriorating due to actions.

  Furthermore, when the number of people in the room becomes zero, it is possible to prevent a wasteful ventilation operation when not in the absence by providing a notification means for notifying forgetting to turn off, and at the same time, it is effective for energy saving. In order to control the ventilation volume by adding to the standard ventilation volume according to the number of people in the room and the air cleanliness, not only the standard ventilation volume and the carbon dioxide released from the person, It is possible to provide a ventilator that can prevent deterioration.

  In addition, when the total value of the ventilation volume to be added calculated by the number of people in the room and the reference ventilation volume exceeds the ventilation capacity, the ventilation volume that cannot be handled by providing a warning means to notify and warn of insufficient ventilation volume In addition, it is possible to notify the shortage of ventilation volume at the same time, and at the same time, the ventilation volume is controlled by adding to the reference ventilation volume according to the number of people in the room and the air cleanliness. It is possible to provide a ventilator that can prevent deterioration of air quality due to not only the released carbon dioxide but also human daily activities.

  Furthermore, since the cleanliness detection means is configured to include a carbon dioxide sensor, the amount of ventilation is controlled by adding to the reference ventilation according to the number of people in the room and the concentration of carbon dioxide. It is possible to provide a ventilator that can prevent deterioration of air quality with respect to carbon dioxide released from the air.

  In addition, the cleanliness detection means is configured to include a smoke sensor, and controls the ventilation volume by adding to the reference ventilation volume according to the number of people in the room and the hydrogen and carbon monoxide generated from the combustion equipment. It is possible to provide a ventilator that can secure the ventilation amount and prevent deterioration of air quality due to carbon dioxide released from a person and a person's daily activities.

  In addition, the cleanliness detection means is equipped with a formaldehyde sensor, which controls the ventilation volume by adding to the reference ventilation volume according to the number of people in the room and the formaldehyde concentration generated from the building materials. And the ventilation apparatus which can prevent the deterioration of the air quality by the carbon dioxide emitted from a person and the volatile gas from a building can be provided beforehand.

  In addition, the cleanliness detection means is provided with a dust sensor so that it can be added to the reference ventilation according to the number of people in the room, the daily activities of people, the dust from the building, or the amount of pollen flowing from the outside. Therefore, it is possible to provide a ventilator that can ensure reference ventilation and prevent air quality from deteriorating.

  According to the first aspect of the present invention, the number of people detecting means for detecting the number of people in the room, the degree of cleanness detecting means for detecting the air cleanliness in the room, and the reference corresponding to the room volume stored in advance according to the number of people. Ventilation volume control means that controls to add to the ventilation volume and ventilation volume addition means that further adds ventilation volume according to the air cleanliness, according to the number of people in the room and the air cleanliness Because the ventilation control is performed in addition to the reference ventilation, it is possible to prevent the deterioration of the air quality due to not only the ensuring of the reference ventilation and the carbon dioxide released from the person but also the daily activities of the person. Has an effect.

  The number of people detecting means is controlled so that one infrared sensor, infrared condensing means for selectively transmitting and condensing infrared light from a person, and intermittently incident infrared light and appropriately switching the incident direction. And a number determination means for determining the number of persons from the induced voltage distribution of the infrared sensor generated by the difference between the reference infrared light when blocked by the chopper means and the infrared light of the target area. In addition to detecting the number of people in the room with a simpler method and adding to the standard ventilation volume according to the number of people in the room and the cleanliness of the air, the ventilation volume is controlled. In addition to carbon dioxide released from the air, it has the effect of preventing the deterioration of air quality due to human daily activities.

  Furthermore, the number-of-persons detecting means controls at least two or more infrared sensors, a rotating means for controlling the infrared sensors to rotationally scan, and intermittently incident infrared light and appropriately switching the incident direction. It is configured to include chopper means and number determination means for determining the number of persons from the induced voltage distribution of the infrared sensor generated by the difference between the reference infrared light when blocked by the chopper means and the infrared light of the target area. In order to control the ventilation volume by adding to the reference ventilation volume according to the number of people in the room and the air cleanliness detected more accurately by the person detection means, ensuring the reference ventilation volume and carbon dioxide released from the person In addition, the air quality can be prevented from deteriorating with respect to human activities.

  In addition, the rotation source and the drive source of the chopper means are configured to be the same, and the configuration of the number of people detection means can be simplified, and at the same time added to the reference ventilation according to the number of people in the room and the air cleanliness. Therefore, since the ventilation amount control is performed, it has the effect of ensuring the reference ventilation amount and preventing the deterioration of the air quality due to not only the carbon dioxide released from the person but also the daily activities of the person.

  Furthermore, the infrared condensing means is configured by a Fresnel lens, and the number of persons detecting means is capable of condensing infrared rays over a wide range even when the detection target area is wide, and is wide with a simple structure. The visual field can be detected, and at the same time, the ventilation control is performed by adding to the reference ventilation according to the number of people in the room and the air cleanliness, ensuring the reference ventilation and carbon dioxide released from the person. In addition, the air quality can be prevented from deteriorating with respect to human activities.

  Further, the infrared condensing means is constituted by a silicon lens, and by selectively transmitting and condensing infrared light having a wavelength of about 10 μm emitted from a person, sensitivity to detection of the number of people in the room. The number of people in the room can be determined with high accuracy, and at the same time, the amount of ventilation in the room is added to the reference ventilation amount according to the number of people in the room and the air cleanliness. In addition to the carbon dioxide released from a person, the air quality can be prevented from deteriorating with respect to human activities.

  Furthermore, since the infrared sensor is arranged in the non-rotating scanning direction, and the narrow field of view where the infrared sensor is not arranged is rotated, the rotational scanning is performed even when the detection target area of the infrared sensor is wide. In addition to being able to respond by widening the angle, the ventilation rate control is performed by adding to the reference ventilation amount according to the number of people in the room and the air cleanliness, so ensuring the reference ventilation amount and carbon dioxide released from the person In addition, the air quality can be prevented from deteriorating with respect to human activities.

  In addition, it is configured to include a discriminating means for discriminating a person and a fixed heat source from the amount of time variation of the induced voltage distribution to the infrared sensor, and since the fixed heat source and the person can be distinguished, they are emitted from the person. At the same time that carbon dioxide can be predicted with high accuracy, ventilation control is performed by adding to the reference ventilation according to the number of people in the room and the air cleanliness. In addition, the air quality can be prevented from deteriorating with respect to human activities.

  Furthermore, it is configured to include a position determination means for determining the position of the person or the fixed heat source from the induced voltage distribution signal from the infrared sensor, and at the same time, the position of the person or the fixed heat source can be specified. Since the ventilation control is performed by adding to the reference ventilation according to the air cleanliness, not only the reference ventilation but also the deterioration of the air quality due to the human activities as well as the carbon dioxide released from the person. It has an effect that can be prevented.

  In addition, it is configured to include a second ventilation volume control means for controlling the ventilation volume to increase or decrease depending on the position of the person, and controls the ventilation volume, that is, the ventilation speed according to the position of the person or the fixed heat source. At the same time, because the ventilation control is performed by adding to the reference ventilation according to the number of people in the room and the air cleanliness, not only the reference ventilation but also the carbon dioxide released from the person, It has the effect of preventing the deterioration of air quality with respect to daily activities.

  Furthermore, when the number of people in the room becomes zero, it is configured to have a notification means for notifying that the user forgets to turn it off. In order to control the ventilation volume by adding to the standard ventilation volume according to the number of people in the room and the air cleanliness, ensuring the standard ventilation volume and not only the carbon dioxide released from the person but also the air quality with respect to human activities It is possible to prevent the deterioration of the above.

  In addition, when the total ventilation volume calculated based on the number of people in the room and the total value of the standard ventilation volume exceed the ventilation capacity, it is configured with a warning means to notify and warn of insufficient ventilation volume. In addition, it is possible to notify the shortage of ventilation when the volume reaches the limit, and at the same time, the ventilation is controlled by adding to the reference ventilation according to the number of people in the room and the air cleanliness. In addition to carbon dioxide released from the air, the air quality can be prevented from deteriorating with respect to human activities.

  Furthermore, the cleanliness detection means is configured to include a carbon dioxide gas sensor, and in order to control the ventilation volume in addition to the reference ventilation volume according to the number of people in the room and the carbon dioxide gas concentration, ensuring the reference ventilation volume, It has the effect of preventing air quality deterioration against carbon dioxide released from humans.

  In addition, the cleanliness detection means is configured to include a smoke sensor, and in order to perform ventilation volume control by adding to the reference ventilation volume according to the number of people in the room and the hydrogen and carbon monoxide generated from the combustion equipment, It has the effect | action that the deterioration of the air quality with respect to the ensuring of a reference | standard ventilation amount, the carbon dioxide emitted from a person, and a person's living action can be prevented beforehand.

  Furthermore, the cleanliness detection means is configured to include a formaldehyde sensor, and controls the ventilation volume by adding to the reference ventilation volume according to the number of people in the room and the formaldehyde concentration generated from the building materials. It has the effect that it can prevent the deterioration of air quality due to the securing and carbon dioxide released from humans and the volatile gas from the building.

  The cleanliness detection means includes a dust sensor, and is added to the reference ventilation rate according to the number of people in the room, the daily activities of the person, the dust from the building, or the amount of pollen flowing from the outside. Since the ventilation amount control is performed, the reference ventilation amount can be ensured and the air quality can be prevented from deteriorating.

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

(Embodiment 1)
FIG. 1 shows a configuration diagram of a ventilation device according to the first embodiment.

  As shown in the figure, the ventilator is a pyroelectric infrared sensor 1 that detects infrared rays emitted from a person as a person detection means, and an infrared ray condenser that selectively transmits and collects infrared light from a person. Means 2, intermittent input of infrared light and chopper means 3 for controlling the incident direction to be switched as appropriate; induced voltage distribution of the pyroelectric infrared sensor 1 caused by the difference in infrared light before and after being cut off by the chopper means 3 The number-of-rooms determination means 4 for determining the number of people in the room, the carbon dioxide sensor 5 as a cleanliness detection means for detecting the indoor air cleanliness, and the addition of the determined number of persons and the carbon dioxide concentration to the reference ventilation amount are calculated. A ventilation amount adding means 6 for controlling the ventilation amount and a ventilation amount control means 7 for controlling the ventilation amount are provided.

  Next, FIG. 2 shows a flowchart of the number determination in the number determination means 4.

  As shown in the figure, the number determination means 4 inputs the induced voltage obtained by the pyroelectric infrared sensor 1. The input induced voltage V1 is stored as an initial induced voltage. Furthermore, the induced voltage V2 inputted for the second time is compared with the induced voltage V1 inputted for the first time, and if the amount of change is less than ΔV, it is not updated and the initial induced voltage is set to V1. At this time, the fact that the reference time t1 has elapsed is stored. When the amount of change between the induced voltage V3 and the initial induced voltage V1 input for the third time exceeds ΔV, it is detected as a maximum value Vp. When the maximum value Vp is below the elapsed time threshold value Δt, the number of people in the room is added by one. This determination is repeated and the number of persons is determined by counting the number of occurrences of the maximum value Vp.

  Next, the configuration of the carbon dioxide sensor 5 is shown in FIG.

  As shown in the figure, the carbon dioxide sensor 5 includes a sensor unit 5a and a microcomputer 5c that calculates the carbon dioxide concentration from the signal detected by the signal processing circuit unit 5b. In the figure, since the resistance value of the sensor unit 5a varies according to the concentration of carbon dioxide contained in the air, the partial pressure value with respect to the reference resistance, that is, the detection signal varies in time series. The detected signal is input to the microcomputer 5c, and the reference value and the current concentration are calculated from the input voltage signal.

  Next, a calculation flowchart of the carbon dioxide concentration is shown in FIG. As shown in the figure, signals are appropriately input from the sensor unit 5a. The reference value is determined from the input voltage signal. The determination method is a method that takes into account the secular change of the sensor unit 5a. An input signal from the sensor unit 5a is always stored, and a signal having a low voltage value is extracted from the stored voltage signal. The sensor unit 5a uses a semiconductor gas sensor. As the carbon dioxide gas concentration increases, the resistance value decreases, that is, the voltage signal increases. Using a count counter that counts down in proportion to time, when a certain period (for example, one day) elapses, a voltage minimum value generated within the certain period is detected as a reference concentration (for example, 400 ppm). Based on the detected reference concentration, a voltage deviation between the reference voltage corresponding to the reference concentration and the current detected voltage is calculated. The calculated voltage deviation is compared with the table data shown in FIG. 5 to determine the carbon dioxide concentration.

  Next, FIG. 6 shows a flowchart of the ventilation volume increase / decrease control in the ventilation volume control means 7.

  As shown in the figure, the ventilation amount control means 7 calculates the addition amount calculated by the ventilation amount addition means 6, that is, the addition amount calculated by multiplying the number of people in the room determined by the number determination means 4 by the necessary ventilation amount per person. input. The amount of increase in ventilation calculated by the ventilation amount adding means 6 is, for example, 20 m3 / h addition per person in the room. The additional amount of 20 m 3 / h means the necessary ventilation based on the carbon dioxide emission when the adult male is sitting quietly. Optimum by adding the determined increase in ventilation to the standard ventilation (for example, the ventilation volume determined as a measure against sick house under the revised Building Standards Law: the ventilation volume obtained by multiplying the room volume by the number of ventilations 0.5 times / h) Calculate the proper ventilation. If the calculated ventilation exceeds the maximum ventilation, limit the maximum ventilation. Further, the ventilation amount adding means 6 further adds to the ventilation amount according to the carbon dioxide concentration detected by the carbon dioxide sensor 5. For example, if the added amount corresponding to the carbon dioxide concentration is 100 ppm higher than the set concentration, 10 m 3 / h is added. If the added ventilation exceeds the maximum ventilation, limit the maximum ventilation.

  The motor speed of the ventilator is controlled from the calculated ventilation volume, and the target air volume is controlled.

  As described above, according to the first embodiment, it is possible to perform optimal ventilation control that is added to the reference ventilation according to the number of people in the room and the indoor air cleanliness.

(Embodiment 2)
FIG. 7 shows a configuration diagram of the ventilation device according to the second embodiment.

  The same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted. As shown in the figure, the ventilator includes a pyroelectric infrared sensor 1 that detects infrared rays emitted from a person, a Fresnel lens 8 that selectively transmits and collects infrared light from a person, and infrared light. The number of persons is determined based on the induced voltage distribution of the chopper means 3 that controls intermittently incident light and switching the incident direction as appropriate, and the pyroelectric infrared sensor 1 caused by the difference in infrared light before and after the interruption by the chopper means 3 The number of persons determination means 4b, the smoke sensor 5d as the cleanness detection means, the number of persons determined, the amount of smoke, that is, the amount of addition of hydrogen and carbon monoxide to the reference ventilation volume is calculated, and the ventilation volume is controlled A ventilation amount control means 7b is provided. The chopper means 3 includes a shutter unit 3a that intermittently blocks and a motor 3b that rotationally drives the pyroelectric infrared sensor 1 and that drives the shutter unit 3a in synchronization with the rotational drive.

  Next, FIG. 8 shows a flowchart of the number determination in the number determination means 4b.

  As shown in the figure, the number determination means 4b inputs and stores the induced voltage obtained by the pyroelectric infrared sensor 1. Next, the pyroelectric infrared sensor 1 is rotationally driven by the motor 3b and at the same time intermittently receives infrared light by the shutter 3a, that is, inputs a new induced voltage. The target lens of the Fresnel lens 8 is changed by this rotational driving, and an orientation different from the field of view before driving is detected. By repeating this operation, the infrared distribution in the space is detected as the induced voltage distribution. Next, the maximum value is searched from the detected infrared distribution, and the number of maximum values is detected. Further, the number of local maximum values is determined as the number of people in the room, and the number of people is output to the ventilation amount control means 7b.

  Next, the smoke sensor 5d is a chemical sensor that reacts with hydrogen and carbon monoxide generated when it is burned, and detailed description thereof is omitted because it is a known technique.

  Next, the ventilation amount control means 7b will be described with reference to FIG.

  As shown in the figure, the ventilation amount control means 7b calculates the addition amount by multiplying the number of people in the room determined by the number determination means 4 by the necessary ventilation amount per person. For example, the increase in ventilation is 20 m3 / h per person in the room. The additional amount of 20 m 3 / h means the necessary ventilation based on the carbon dioxide emission when the adult male is sitting quietly. Optimum by adding the determined increase in ventilation to the standard ventilation (for example, the ventilation volume determined as a measure against sick house under the revised Building Standards Law: the ventilation volume obtained by multiplying the room volume by the number of ventilations 0.5 times / h) Calculate the proper ventilation. If the calculated ventilation exceeds the maximum ventilation, limit the maximum ventilation. Further, it is further added to the ventilation amount depending on whether or not smoke detected by the smoke sensor 5d is generated. For example, 10m3 / h is added as the addition amount according to the generation of smoke if it is generated. If the added ventilation exceeds the maximum ventilation, limit the maximum ventilation.

  The motor speed of the ventilator is controlled from the calculated ventilation volume, and the target air volume is controlled.

  As described above, according to the second embodiment, optimal ventilation control that is added to the reference ventilation can be performed according to the number of people in the room and the air cleanliness in the room.

(Embodiment 3)
FIG. 10 shows a configuration diagram of the ventilation device according to the third embodiment.

  The same parts as those in the first or second embodiment are denoted by the same reference numerals, and detailed description thereof is omitted. As shown in the figure, the ventilator selectively transmits infrared light from a person and four pyroelectric infrared sensors 1a to 1d arranged in a non-rotating scanning direction for detecting infrared light emitted from the person. The silicon lens 9 for condensing, the chopper means 3 for controlling the incident of the infrared light intermittently and appropriately switching the incident direction, and the pyroelectric type generated by the difference of the infrared light before and after the interruption by the chopper means 3 The number determination means 4c for determining the number of persons from the induced voltage distribution of the infrared sensors 1a to 1d, the formaldehyde sensor 5e as the cleanliness detection means, the determined number of persons, and the amount of addition from the formaldehyde state to the reference ventilation amount are calculated, and A ventilation amount control means 7c for controlling the ventilation amount is provided. Further, the chopper means 3 includes a shutter part 3a that is intermittently interrupted, and a motor 3b that rotates the pyroelectric infrared sensors 1a to 1d and that drives the shutter part 3a in synchronization with the rotational drive. I have.

  Next, FIG. 11 shows a flowchart of the number determination in the number determination means 4c.

  As shown in the figure, the number determination means 4c inputs and stores the induced voltage obtained by the pyroelectric infrared sensors 1a to 1d. Next, the pyroelectric infrared sensors 1a to 1d are rotationally driven by the motor 3b, and at the same time, infrared light is intermittently incident by the shutter unit 3a, that is, a new induced voltage is input. By this rotational drive, the target area of the silicon lens 9 changes, and an orientation different from the visual field before the drive is detected. By repeating this operation, the infrared distribution in the space is detected as the induced voltage distribution. Next, the maximum value is searched from the detected infrared distribution, and the number of maximum values is detected. Furthermore, the number of local maximum values is determined as the number of people in the room, and the number of people is output to the ventilation amount control means 7c.

  Next, the formaldehyde sensor 5e is a chemical sensor that reacts with volatile organic compounds (VOC) generated from building materials and the like, and will not be described in detail because it is a known technique.

  Next, a flowchart of the ventilation amount control means 7c will be described with reference to FIG.

  As shown in the figure, the ventilation amount control means 7c calculates the addition amount by multiplying the number of people in the room determined by the number determination means 4 by the necessary ventilation amount per person. For example, the increase in ventilation is 20 m3 / h per person in the room. The additional amount of 20 m 3 / h means the necessary ventilation based on the carbon dioxide emission when the adult male is sitting quietly. Optimum by adding the determined increase in ventilation to the standard ventilation (for example, the ventilation volume determined as a measure against sick house under the revised Building Standards Law: the ventilation volume obtained by multiplying the room volume by the number of ventilations 0.5 times / h) Calculate the proper ventilation. If the calculated ventilation exceeds the maximum ventilation, limit the maximum ventilation. Further, the ventilation amount is further added according to the VOC concentration detected by the formaldehyde sensor 5e. For example, if the amount of addition according to the VOC concentration is 1 ppm higher than the reference concentration, 10 m 3 / h is added. If the added ventilation exceeds the maximum ventilation, limit the maximum ventilation.

  The motor speed of the ventilator is controlled from the calculated ventilation volume, and the target air volume is controlled.

  As described above, according to the third embodiment, it is possible to perform optimal ventilation control that is added to the reference ventilation according to the number of people in the room and the air cleanliness in the room.

(Embodiment 4)
FIG. 13 shows a configuration diagram of a ventilation device according to the fourth embodiment.

  The same parts as those in the first to third embodiments are denoted by the same reference numerals, and detailed description thereof is omitted. As shown in the figure, the ventilator selectively transmits infrared light from a person and four pyroelectric infrared sensors 1a to 1d arranged in a non-rotating scanning direction for detecting infrared light emitted from the person. The silicon lens 9 for condensing, the chopper means 3 for controlling the incident of the infrared light intermittently and appropriately switching the incident direction, and the pyroelectric type generated by the difference of the infrared light before and after the interruption by the chopper means 3 Number determination means 4c for determining the number of persons from the induced voltage distribution of the infrared sensors 1a to 1d, determination means 10 for determining a person and a fixed heat source from the time change of the induced voltage distribution of the pyroelectric infrared sensors 1a to 1d, and cleanliness A dust sensor 5f is provided as detection means. The chopper means 3 includes a shutter unit 3a that intermittently blocks and a motor 3b that rotationally drives the pyroelectric infrared sensors 1a to 1d and drives the shutter unit 3a in synchronization with the rotational driving.

  Next, the dust sensor 5f is a sensor that reacts to dust generated from smoking, dust generated from building materials, and the like, and will not be described in detail because it is a known technique.

  Next, FIG. 14 shows a flowchart of discrimination in the discrimination means 10.

  As shown in the figure, the discriminating means 10 inputs and stores the induced voltage obtained by the pyroelectric infrared sensors 1a to 1d. Next, the pyroelectric infrared sensors 1a to 1d are rotationally driven by the motor 3b, and at the same time, infrared light is intermittently incident by the shutter unit 3a, that is, a new induced voltage is input. By repeating this operation, the infrared distribution in the space is detected as the induced voltage distribution. The maximum value is searched from the detected infrared distribution, and the number of maximum values is detected. Further, a new maximum value is retrieved from a new infrared distribution after a specified time. The maximum value changed from the position where the old and new maximum values are detected is extracted, the number of the maximum values is determined as the number of people in the room, and the number of people is output to the ventilation control means 7d.

  Next, the ventilation amount control means 7d will be described with reference to FIG.

  As shown in the figure, the ventilation amount control means 7d calculates the addition amount by multiplying the number of people in the room determined by the number determination means 4 by the necessary ventilation amount per person. For example, the increase in ventilation is 20 m3 / h per person in the room. The additional amount of 20 m 3 / h means the necessary ventilation based on the carbon dioxide emission when the adult male is sitting quietly. Optimum by adding the determined increase in ventilation to the standard ventilation (for example, the ventilation volume determined as a measure against sick house under the revised Building Standards Law: the ventilation volume obtained by multiplying the room volume by the number of ventilations 0.5 times / h) Calculate the proper ventilation. If the calculated ventilation exceeds the maximum ventilation, limit the maximum ventilation. Further, the ventilation amount is further added according to the amount of dust detected by the dust sensor 5f. For example, if the added amount according to the amount of dust is 1 mg / m 3 higher than the reference content, 10 m 3 / h is added. If the added ventilation exceeds the maximum ventilation, limit the maximum ventilation.

  The motor speed of the ventilator is controlled from the calculated ventilation volume, and the target air volume is controlled.

  As described above, according to the fourth embodiment, it is possible to perform optimal ventilation control that is added to the reference ventilation according to the number of people in the room and the indoor air cleanliness.

(Embodiment 5)
FIG. 16 shows a configuration diagram of a ventilation device according to the fifth embodiment.

  In addition, the same part as Embodiment 1-4 is attached | subjected the same number, and detailed description is abbreviate | omitted. As shown in the figure, the ventilator selectively transmits infrared light from a person and four pyroelectric infrared sensors 1a to 1d arranged in a non-rotating scanning direction for detecting infrared light emitted from the person. The silicon lens 9 for condensing, the chopper means 3 for controlling the incident of the infrared light intermittently and appropriately switching the incident direction, and the pyroelectric type generated by the difference of the infrared light before and after the interruption by the chopper means 3 Number determining means 4c for determining the number of persons from the induced voltage distribution of infrared sensors 1a to 1d, carbon dioxide gas sensor 5 as a cleanliness detecting means for detecting the cleanliness of indoor air, and induced voltage distribution of pyroelectric infrared sensors 1a to 1d Position determining means 11 for determining the position of a person or a fixed heat source, and second ventilation volume control means 12 for controlling the ventilation volume to be increased or decreased according to the position of the person. The chopper means 3 includes a shutter unit 3a that intermittently blocks and a motor 3b that rotationally drives the pyroelectric infrared sensors 1a to 1d and drives the shutter unit 3a in synchronization with the rotational driving.

  Next, FIG. 17 shows a flowchart of determination in the position determination means 11.

  As shown in the figure, the position determining means 11 inputs and stores the induced voltage obtained by the pyroelectric infrared sensors 1a to 1d. Next, the pyroelectric infrared sensors 1a to 1d are rotationally driven by the motor 3b, and at the same time, infrared light is intermittently incident by the shutter unit 3a, that is, a new induced voltage is input. By repeating this operation, the infrared distribution in the space is detected as the induced voltage distribution. The maximum value is searched from the detected infrared distribution. Further, the position where the maximum value exists, that is, the position of a person or a fixed heat source is detected from the pixel indicating the maximum value searched and the reference table shown in FIG. The number and position of the detected maximum values are output to the second ventilation amount control means 12.

  Next, the second ventilation amount control means 12 will be described with reference to FIG.

  As shown in the figure, the second ventilation amount control means 12 inputs the position of the person or the fixed heat source determined by the position determination means 11, and calculates the addition amount according to the input position, that is, the distance from the ventilation device. To do. For the addition amount of the ventilation amount, for example, the addition amount set for each integral value 1 m · person of the distance from the ventilation device and the number of people in the room is 5 m 3 / h addition. If the calculated ventilation volume plus the added volume exceeds the maximum ventilation volume, limit the maximum ventilation volume. Further, the amount of ventilation is further added according to the carbon dioxide concentration detected by the carbon dioxide sensor 5. For example, if the added amount corresponding to the carbon dioxide concentration is 100 ppm higher than the set concentration, 10 m 3 / h is added. If the added ventilation exceeds the maximum ventilation, limit the maximum ventilation.

  The motor speed of the ventilator is controlled from the calculated ventilation volume, and the target air volume is controlled.

  As described above, according to the fifth embodiment, the induced voltage distribution of the pyroelectric infrared sensors 1a to 1d is input to the position determining means 11, and the ventilation control and the carbon dioxide specifying the position of the person or the fixed heat source are performed. The ventilation volume of the entire room will be optimized according to the gas concentration.

(Embodiment 6)
FIG. 20 shows a configuration diagram of a ventilation device according to the sixth embodiment.

  The same parts as those in the first to fifth embodiments are denoted by the same reference numerals, and detailed description thereof is omitted. As shown in the figure, the ventilator selectively transmits infrared light from a person and four pyroelectric infrared sensors 1a to 1d arranged in a non-rotating scanning direction for detecting infrared light emitted from the person. The silicon lens 9 for condensing, the chopper means 3 for controlling the incident of the infrared light intermittently and appropriately switching the incident direction, and the pyroelectric type generated by the difference of the infrared light before and after the interruption by the chopper means 3 A number determination means 4b for determining the number of persons from the induced voltage distribution of the infrared sensors 1a to 1d is provided. The chopper means 3 includes a shutter unit 3a that intermittently blocks, a motor 3b that rotationally drives the pyroelectric infrared sensors 1a to 1d and drives the shutter unit 3a in synchronization with the rotational driving, and the number of people in the room When the sum of the ventilation volume to be added calculated based on the carbon dioxide concentration and the reference ventilation volume exceeds the ventilation capacity, a caution means 13 is provided to notify and warn that the ventilation volume is insufficient.

  Next, the configuration of the attention means 13 is shown in FIG.

  As shown in the figure, the caution means 13 includes an input unit 13a for inputting a signal indicating whether or not the ventilation capacity obtained from the ventilation volume control means 7 is input, and a Hi signal when the input total value exceeds the capacity. When not exceeding, a signal processing unit 13b that outputs a Lo signal and a buzzer 13c that generates a sound when a signal exceeding the capability is received are provided.

  As described above, according to the sixth embodiment, attention is urged by the caution means 13 when a ventilation amount exceeding the ventilation capacity is required.

(Embodiment 7)
FIG. 22 is a configuration diagram of the ventilation device according to the seventh embodiment.

  The same parts as those in the first to sixth embodiments are denoted by the same reference numerals, and detailed description thereof is omitted. As shown in the figure, the ventilator includes a pyroelectric infrared sensor 1 that detects infrared rays emitted from a person, an infrared condensing means 2 that selectively transmits and condenses infrared light from a person, and red From the induced voltage distribution of the chopper means 3 for controlling the incident light to be intermittently incident and switching the incident direction as appropriate, and the pyroelectric infrared sensor 1 generated by the difference in the infrared light before and after being blocked by the chopper means 3 Number determination means 4 for determining the number of persons, ventilation amount control means 7 for calculating the amount of addition from the determined number of persons to the reference ventilation volume, and controlling the ventilation volume, the number of people in the room is zero, and the carbon dioxide gas concentration is defined An informing means 14 is provided for informing that the user forgets to turn it off when the value becomes lower than the value.

  Next, the structure of the notification means 14 is shown in FIG.

  As shown in the figure, the notification unit 14 includes a notification input unit 14a for receiving whether there is no occupant from the ventilation amount control unit 7 and the carbon dioxide gas concentration has become a specified value (for example, 600 ppm) or less, and a notification input. Notification signal processing for receiving a Hi signal when there is an occupant from the unit 14a or when the carbon dioxide concentration exceeds a specified value, and when there is no resident and the carbon dioxide concentration falls below a specified value, 14b and a notification buzzer 14c that sounds when the number of people in the room reaches zero.

  As described above, according to the seventh embodiment, when the number of people in the room is zero and the carbon dioxide gas concentration is lower than the specified value, the notification means 14 turns off the notification buzzer 14c. You will be notified of forgetting.

  In addition, although the alerting | reporting means 14 was sounded using the alerting buzzer 14c, even if it alert | reports with light using LED etc., there is no difference in an effect.

  The present invention relates to automatic control of various air-conditioning equipment by detecting a human body and detecting the number of people in a room using a human sensor, and can also be applied to automatic start / stop of an air conditioner, temperature, wind direction, or air volume control.

The block diagram of the ventilation apparatus in Embodiment 1 of this invention Flow chart for determining the number of persons in the same number determination means 4 Configuration diagram of the carbon dioxide sensor 5 Calculation flow of carbon dioxide concentration The figure which shows the table data of the carbon dioxide gas concentration judgment Flow chart of the ventilation amount control means 7 The block diagram of the ventilation apparatus in Embodiment 2 of this invention Flow chart of same number determination means 4b Flow chart of the ventilation amount control means 7b The block diagram of the ventilation apparatus in Embodiment 3 of this invention Flow chart of same number determination means 4c Flow chart of the ventilation amount control means 7c The block diagram of the ventilator in Embodiment 4 of this invention Flow chart of the discrimination means 10 Flow chart of the ventilation amount control means 7d The block diagram of the ventilator in Embodiment 5 of this invention Flowchart of same position determination means 11 The figure which shows the reference table for the same position detection Flow chart of the second ventilation amount control means 12 The block diagram of the ventilator in Embodiment 6 of this invention Configuration diagram of the attention means 13 The block diagram of the ventilator in Embodiment 7 of this invention Configuration diagram of the notification means 14 Configuration diagram of conventional air conditioner Layout of human body sensor

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Pyroelectric infrared sensor 1a Pyroelectric infrared sensor 1b Pyroelectric infrared sensor 1c Pyroelectric infrared sensor 1d Pyroelectric infrared sensor 2 Infrared condensing means 3 Chopper means 3a Shutter part 3b Motor 4 Number determination means 4b Number determination Means 4c Number determination means 5 Carbon dioxide sensor 5a Sensor part 5b Signal processing circuit part 5c Microcomputer 5d Smoke sensor 5e Formaldehyde sensor 5f Dust sensor 6 Ventilation amount addition means 7 Ventilation amount control means 7b Ventilation amount control means 7c Ventilation amount control means 7d Ventilation Volume control means 7f Ventilation volume control means 8 Fresnel lens 9 Silicon lens 10 Discriminating means 11 Position determination means 12 Second ventilation volume control means 13 Attention means 13a Input unit 13b Signal processing unit 13c Buzzer 14 Notification unit 14a Notification input unit 14b Notification signal Processing part 14c Notification buzzer

Claims (16)

The number of people detection means for detecting the number of people in the room, the degree of cleanliness detection means for detecting the cleanliness of the air in the room, and the ventilation volume controlled to be added to the reference ventilation volume corresponding to the room volume stored in advance according to the number of people A ventilation apparatus comprising a control means and a ventilation amount adding means for further adding a ventilation amount according to the air cleanliness. The number-of-people detecting means includes one infrared sensor, infrared condensing means for selectively transmitting and condensing infrared light from a person, and a chopper that controls to intermittently input infrared light and appropriately switch the incident direction. And a number determination means for determining the number of persons from the induced voltage distribution of the infrared sensor generated by the difference between the reference infrared light when blocked by the chopper means and the infrared light of the target area. The ventilator according to claim 1. The number of persons detecting means includes at least two or more infrared sensors, a rotating means for controlling the infrared sensors to rotationally scan, and a chopper means for controlling the intermittent incident light of the infrared light and appropriately switching the incident direction. And a number determination means for determining the number of persons from the induced voltage distribution of the infrared sensor generated by the difference between the reference infrared light when blocked by the chopper means and the infrared light of the target area. The ventilation apparatus according to claim 1. 4. A ventilation apparatus according to claim 3, wherein the driving means of the rotating means and the chopper means are the same. The ventilation apparatus according to claim 2, wherein the infrared condensing means is a Fresnel lens. The ventilation apparatus according to claim 2, wherein the infrared condensing means is a silicon lens. The ventilation device according to claim 3, wherein the infrared sensors are arranged in a non-rotating scanning direction. The ventilator according to claim 3, further comprising a discriminating means for discriminating a person and a fixed heat source from a temporal change amount of an induced voltage distribution to the infrared sensor. 4. A ventilation apparatus according to claim 3, further comprising position determining means for determining a position of a person or a fixed heat source from an induced voltage distribution signal from an infrared sensor. The ventilation apparatus according to claim 9, further comprising second ventilation volume control means for controlling the ventilation volume to increase or decrease depending on a person's position. The ventilator according to claim 1, further comprising an informing means for informing the user of forgetting to turn off when the number of people in the room becomes zero. 2. The ventilation according to claim 1, further comprising a warning means for notifying and warning of insufficient ventilation when the total value of the ventilation volume to be added and the reference ventilation volume calculated by the number of people in the room exceeds the ventilation capacity. apparatus. The ventilation device according to claim 1, wherein the cleanliness detection means includes a carbon dioxide sensor. The ventilation device according to claim 1, wherein the cleanliness detection means includes a smoke sensor. The ventilation device according to claim 1, wherein the cleanliness detection means includes a formaldehyde sensor. The ventilation device according to claim 1, wherein the cleanliness detection means includes a dust sensor.

Images