JP2013104656A - Ventilation apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent dew condensation, and stop a cold draft by heating an outdoor air.SOLUTION: A ventilation apparatus includes: an outdoor air inlet 3 disposed at one surface of a box-shaped body and sucking outdoor air; an outdoor air outlet 5 disposed at another surface of the body and discharging the outdoor air into a room; and a fan motor 15 disposed inside the body, having an air supply flow path 6 from the outdoor air inlet 3 to the outdoor air outlet 5, and transferring the air into the air supply flow path 6. An opening adjusting means 16 and a heating means 19 having a smaller passing area than the cross area of the air supply flow path 6 are provided in the air supply flow path 6. An opening area of the air supply flow path 6 is adjusted by the opening adjusting means 16, when the heating means 19 is operated. Thereby, a ratio of the air passing through the heating means 19 with respect to the outdoor air supplied into the room is adjusted such that the heated amount, by the heating means 19, of the air passing through the air supply flow path 6 is adjusted. Accordingly, dew condensation of the body is prevented and a cold draft is reduced.

Description

  The present invention relates to a ventilation device installed in a building.

  2. Description of the Related Art Conventionally, as this type of ventilator, a ventilator that is installed in a building, introduces outside air from an outside air supply port, and supplies the outside through a built-in heat exchange element is known. (For example, refer to Patent Document 1).

  Hereinafter, the ventilation air conditioner will be described with reference to FIG.

  As shown in FIG. 10, the ventilator main body 101 is installed in an attic space or a first floor ceiling space in a building, introduces fresh outside air from the outside air supply port 102, and passes through a built-in heat exchange element portion 103. Then, the air is supplied into the room through the indoor air supply port 104. On the other hand, the dirty air in the room is introduced from the indoor exhaust port 105, passes through the heat exchange element unit 103, and is exhausted to the outside through the outdoor exhaust port 106. Fresh fresh air introduced from the outdoor air supply port 102 and indoor dirty air introduced from the indoor exhaust port 105 are connected to an electric supply fan 109 connected to the electric motor 107 on the same shaft 108 via the heat exchange element 103. It is configured to be transferred by the exhaust fan 110.

JP-A-11-325535

  In such a conventional ventilator having an air supply function for sucking air from the outside air, there is a problem that the main body is condensed when the outside air is low temperature, and further, the air blown into the room is cold and feels a cold draft. .

  The present invention solves such a conventional problem, and an object of the present invention is to provide a ventilator capable of preventing condensation and eliminating a cold draft by warming the outside air.

  In order to achieve this object, the present invention provides an outside air inlet for sucking outside air on one surface of a box-shaped body, and an outside air outlet for blowing outside air on the other surface. The ventilating apparatus includes a supply air passage from the outside air inlet to the outside air outlet and a fan motor that conveys air into the supply air passage, and an opening adjusting means is provided in the supply air passage. And a heating means having a passage surface smaller than the cross-sectional area of the air supply air passage, and when operating the heating means, the opening adjustment means adjusts the opening area of the air supply air passage, and is supplied indoors. The ratio of the air passing through the heating means in the outside air is adjusted, thereby achieving the intended purpose.

  According to the present invention, an outside air suction port for sucking outside air is provided on one surface of the box-shaped main body, and an outside air outlet for blowing outside air into the room is provided on the other surface, and the outside air from the outside air suction port is provided inside the body. A ventilation device comprising a supply air passage leading to an outlet and a fan motor for conveying air into the supply air passage, wherein the supply air passage has an opening adjusting means and a cross-sectional area of the supply air passage A heating means having a smaller passage surface is provided, and when the heating means is operated, the opening adjustment means adjusts the opening area of the air supply air passage so that the heating means is out of the outside air supplied indoors. By adjusting the ratio of the air passing through, the amount of the air passing through the supply air passage is adjusted by the opening adjusting means, and the amount of the air passing through the heating means is adjusted. Is reduced It is possible to obtain the cormorants effect.

The lower perspective view which shows the ventilation apparatus of Embodiment 1 of this invention Side sectional view showing the ventilator Partial perspective view showing the exhaust air path of the ventilator Partial perspective view showing opening adjustment means of the ventilation device Perspective view of opening adjustment means Perspective view of opening adjustment means and overheating means Partial perspective view showing temperature detection means Side sectional view showing the filter part of the ventilation device Perspective view of filter frame and filter Side sectional view showing a conventional heat exchange ventilator

  The ventilator according to claim 1 of the present invention is provided with an outside air inlet for sucking outside air on one surface of a box-shaped main body, and an outside air outlet for blowing outside air into the other surface on the other surface. An air supply passage from the outside air inlet to the outside air outlet, and a ventilator provided with a fan motor that conveys air into the air supply passage, and in the air supply passage, an opening adjusting means, Heating means having a passage surface smaller than the cross-sectional area of the air supply air passage is provided, and when the heating means is operated, the opening area of the air supply air passage is adjusted by the opening adjustment means, and the outside air supplied indoors Among them, the ratio of air passing through the heating means is adjusted. As a result, the air passing through the air supply passage is adjusted by the opening adjusting means so that the amount of air passing through the heating means is adjusted, and is heated by the heating means, so that the dew condensation prevention and the cold draft of the main body are reduced. .

  In addition, when the heating unit is operated, the number of rotations of the fan motor may be made smaller than when the heating unit is stopped. As a result, an air volume smaller than that when the heating means is stopped passes through the heating means and a small air volume is heated, so that the effect of further preventing condensation on the main body and reducing the cold draft is achieved.

  Moreover, it is good also as a structure which provides a temperature detection means in the said external air inlet. As a result, the temperature of the outside air is detected, so that the heating means can be operated only when the temperature of the outside air is low, so that an energy saving operation can be achieved.

  Moreover, it is good also as a structure which has arrange | positioned the filter between the said external air inlet and the said opening adjustment means. As a result, dust from the outside air can be collected, so that the heating means and the fan motor inside the main body can be protected from dust.

  Moreover, it is good also as a structure which uses a PTC heater for the said heating means. As a result, the output of the heater changes depending on the passing air speed of the PTC element. Therefore, when the fan stops blowing due to a failure or the like, the output of the heater does not increase, so that the safety can be improved. Play.

  The main body includes an exhaust air passage for exhausting indoor air to the outside, and further includes a heat exchange element for exchanging heat between the supply air passage and the air passing through the exhaust air passage. By providing the air supply air channel on the upstream side of the heat exchange element, a heat exchange type ventilator that prevents condensation in the heat exchange element and further freezing in the heat exchange element is obtained.

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

(Embodiment 1)
As shown in FIG. 1, the ventilator 1 includes an exhaust suction port 8 on the lower surface of a box-shaped main body, and an outside air suction port 3, an outside air blowout port 5, and an exhaust port 9 are provided on a side surface. As shown in FIG. 2 and FIG. 3, the ventilation device 1 has a supply air passage 6 from the outside air inlet 3 to the outside air outlet 5 and an exhaust air passage 10 from the exhaust inlet 8 to the outlet 9. I have. In the air supply air passage 6, fresh outdoor air is sucked from the outside air inlet 3 on the side surface 2 of the main body of the ventilator 1, passes through the heat exchange element 4 arranged inside the main body of the ventilator 1, and then flows into the outside air outlet 5. Blow out into the room. On the other hand, in the exhaust air passage 10, dirty air in the room is sucked from the exhaust air inlet 8 of the panel 7 installed on the lower surface of the main body of the ventilator 1, and passes through the heat exchange element 4 arranged inside the main body of the ventilator 1. Then, it blows out from the exhaust port 9 to the outside. At this time, the supply air passage 6 and the exhaust air passage 10 intersect at the heat exchange element 4. The heat exchange element 4 has a function of exchanging the amount of heat of indoor and outdoor air that passes through the supply air passage 6 and the exhaust air passage 10.

  As shown in FIG. 2, the indoor fan 11 is provided in the supply air passage 6, and the outdoor fan 12 is provided in the exhaust air passage 10. The indoor fan 11 and the outdoor fan 12 are connected to the electric motor 13 by the same shaft 14 to constitute a fan motor 15. Fresh air introduced from the outside air inlet 3 and dirty air exhausted from the exhaust inlet 8 flow through the supply air passage 6 and the exhaust air passage 10 by the fan motor 15, respectively. At this time, the heat exchange element 4 is positioned upstream of the indoor fan 11 and the outdoor fan 12 with respect to the air flow.

  Further, as shown in FIG. 4, an opening adjusting means 16 is provided between the outside air inlet 3 and the heat exchange element 4 in the ventilation device 1. As shown in FIG. 5, the opening adjusting means 16 has a damper 18 that opens and closes in a sliding manner with respect to the wind direction surface under the control of the damper motor 17. As shown in FIG. 6, a heating unit 19 is provided upstream or downstream of the opening adjusting unit 16. The heating means 19 is provided with a heater element inside a prismatic cylindrical frame 20 having an opening in the direction of ventilation of the air supply passage 6. The cross-sectional area of the ventilation path of the frame 20 has a smaller passage surface than the cross-sectional area of the supply air path 6. Here, the cross-sectional area of the supply air passage 6 is the opening area of the opening adjusting means 16 when the damper 18 is fully opened.

  That is, when the heating unit 19 is operated, the damper 18 is slid to adjust the opening area of the supply air passage 6 so that most of the air passing through the supply air passage 6 passes through the heating unit 19.

  In addition, when the heating unit 19 is in operation, control is performed so that the rotational speed of the fan motor 15 is smaller than when the heating unit 19 is stopped.

  In addition, as shown in FIG. 7, a temperature detection means 21 for detecting the outside air temperature is provided in the vicinity of the outside air inlet 3.

  Further, as shown in FIGS. 8 and 9, a handle 22 is provided between the outside air inlet 3 and the opening adjusting means 16 or the heating means 19 so as to be detachable, and an opening is formed in the air supply air passage 6. The filter 24 housed in the filter frame 23 is arranged.

  A PTC heater is used as the heating means 19.

  Operation | movement of the ventilator 1 by such a structure is demonstrated.

  In the summer or intermediate period when the outside air temperature is high, the ventilator 1 operates normally, that is, the damper 18 is fully opened, and the heat exchange element 4 passes the air passing through the supply air passage 6 and the exhaust air passage 10. Heat exchange with the air is performed.

  On the other hand, when the outside air temperature is low in winter, the air passing through the supply air passage 6 is heated by the heating means 19 and then flows into the heat exchange element 4. That is, by warming the supplied outside air, condensation is less likely to occur when exchanging heat with room air. Here, in the winter season, the number of natural ventilations in the house can be increased and the number of ventilations can be reduced, so that the amount of ventilation by the machine can be kept small. When the ventilation amount is reduced, the cross-sectional area of the supply air passage 6 can be reduced. Therefore, the passage area of the air passage of the heating means 19 is made smaller than the cross-sectional area of the supply air passage 6. Then, the amount of air passing through the heating means 19 among the air passing through the supply air passage 6 can be controlled by the opening adjusting means 16. That is, even in the winter, when the outside air temperature is relatively high, even if there is outside air that does not pass through the heating means 19 by increasing the opening degree of the damper 18, it is difficult for the heat exchange element 4 to condense. When the outside air temperature is low, the opening degree of the damper 18 is narrowed so that most of the air passing through the supply air passage 6 passes through the heating means 19. In this way, the air passing through the supply air path 6 is warmed so that the heat exchange element 4 is less likely to condense. In addition, when the outside air temperature is low, the opening degree of the damper 18 is controlled, and the rotational speed of the fan motor 15 is suppressed to reduce the ventilation amount, thereby allowing the air to pass through the heating means 19. The heat exchange element 4 is made difficult to condense.

  In addition, since the temperature detection means 21 for detecting the outside air temperature is provided in the outside air inlet 3, the temperature detection means 21 detects the heat exchange element 4 itself at a set temperature at which condensation and freezing are not caused by heat exchange inside and outside the room. Then, the heating means 19 is operated to warm the air.

  In addition, the filter 24 provided at the uppermost stream of the air supply air passage 6 prevents dust and insects entering with fresh air introduced from the outside air inlet 3, and foreign matter enters the heating means 19 and the fan motor 15. Is preventing. Further, the filter 24 is housed in the filter frame 23 and can be removed from the ventilator 1 and can be cared for by the handle 22 in the vertical direction.

  As described above, the ventilation device 1 is provided with the opening adjusting means 16 having the damper 18 that opens and closes in a sliding manner under the control of the damper motor 17, and the opening adjusting means 16 has a cross-sectional area larger than that of the air supply air passage 6. It has a small passage surface and has heating means 19 for warming the air. With such a configuration, the air passing through the supply air passage 6 passes through the heating unit 19 by the opening adjustment unit 16 and is heated by the heating unit 19, thereby preventing condensation on the main body and reducing the cold draft. it can.

  Further, when the heating unit 19 is in operation, a control is made so that the number of rotations of the fan motor 15 is smaller than when the heating unit 19 is stopped, so that a smaller air volume passes through the heating unit 19 than when the heating unit 19 is stopped. Since the air volume is heated, the prevention of condensation on the main body and the cold draft can be further reduced.

  Further, since the filter 24 is disposed between the outside air inlet 3 and the opening adjusting means 16 or the heating means 19, dust from the outside air can be collected. The motor 15 can be protected from dust.

  In addition, since a PTC heater is used as the heating means 19, the heater output changes depending on the passing air speed of the PTC element. Therefore, if the fan stops blowing due to a failure or the like, the heater output does not increase, so that safety is ensured. Property can be improved.

  In the ventilator according to the present invention, the air passing through the supply air passage passes through the heating means by the opening adjustment means and can be warmed by the heating means. It is useful as a ventilation device for

DESCRIPTION OF SYMBOLS 1 Ventilator 2 Body side surface 3 Outside air inlet 4 Heat exchange element 5 Outside air outlet 6 Supply air path 7 Panel 8 Exhaust air inlet 9 Exhaust opening 10 Exhaust air path 11 Indoor fan 12 Outdoor fan 13 Electric motor 14 Coaxial 15 Fan Motor 16 Opening adjustment means 17 Damper motor 18 Damper 19 Heating means 20 Frame body 21 Temperature detection means 22 Handle 23 Filter frame 24 Filter

Claims (6)

An outside air inlet for sucking outside air is provided on one side of the box-shaped main body, and an outside air outlet for blowing outside air into the room on the other side
In the inside of the main body, a ventilation device provided with a supply air path from the outside air inlet to the outside air outlet, and a fan motor that conveys air into the supply air path,
In the supply air passage, an opening adjusting means and a heating means having a passage surface smaller than the cross-sectional area of the supply air passage are provided,
When operating the heating means, the opening adjusting means adjusts the opening area of the air supply air passage to adjust the proportion of the air passing through the heating means in the outside air supplied indoors. Ventilation equipment to do. The ventilation apparatus according to claim 1, wherein when the heating means is operated, the number of rotations of the fan motor is made smaller than when the heating means is stopped. The ventilator according to claim 1 or 2, wherein a temperature detecting means is provided at the outside air inlet. The ventilator according to any one of claims 1 to 3, wherein a filter is disposed between the outside air inlet and the opening adjusting means. The ventilator according to any one of claims 1 to 4, wherein a PTC heater is used as the heating means. The main body is provided with an indoor suction port for sucking in indoor air and an outdoor exhaust port for discharging air sucked from the room to the outside,
Inside the main body, an exhaust air path from the indoor suction port to the outdoor exhaust port, a fan motor that conveys exhaust air into the exhaust air path,
A heat exchange element for performing heat exchange of air passing through the supply air passage and the exhaust air passage;
The ventilation device according to any one of claims 1 to 5, wherein the heating unit is provided on an upstream side of the heat exchange element in the supply air passage.

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