JP4305224B2 - Simultaneous supply / exhaust ventilator - Google Patents

Description

  The present invention relates to a simultaneous supply / exhaust type ventilation device that exhausts indoor air and supplies outdoor air simultaneously.

  Conventionally, as an example of this type of simultaneous supply / exhaust type ventilator, a ventilator using a two-layer pipe and performing an air supply / exhaust operation is known (see, for example, Patent Document 1).

  Hereinafter, the ventilator will be described with reference to FIG.

As shown in the figure, an outer casing 104 having an exhaust port 101 and an air supply port 102 communicating with a room and having an air vent 103 communicating with the outside, and an air vent 103 provided in the outer housing 104 are connected to the exhaust port 101. A partition member 107 that partitions the discharge port 105 that communicates with the suction port 106 and a suction port 106 that communicates with the air supply port 102, and a partition wall 108 that communicates with the vent 103 of the outer casing 104 and divides the interior into two passages are provided in the partition member 107. Correspondingly, a two-layer pipe 109 having two passages respectively communicating with the discharge port 105 and the suction port 106 and an exhaust fan 110 disposed in the outer casing 104 and exhausting air from the exhaust port 101 toward the discharge port 105. Also, an air supply fan 111 for supplying and blowing air from the suction port 106 toward the air supply port 102 is provided.
JP 56-119437 A (2nd page, FIG. 1)

  In such a conventional ventilator, the opening area of the discharge port 105 that discharges indoor air by the exhaust fan 110 and the suction port 106 that supplies outdoor air by the air supply fan 111 are substantially the same in size. As a result, the air resistance of the air supply passage on the side of the air supply fan 111 is increased due to the configuration in the outer casing 104 and the like, and the amount of outdoor air supplied is reduced compared to the amount of indoor air exhausted. There is a problem in that the interior becomes negative pressure, and the odor of dirty air from the corridors, toilets, dressing rooms, etc. in the vicinity of the room is inhaled into the room through the gap, causing discomfort to the user. .

  In addition, recently, a clean filter that removes pollen and dust is provided in the air supply flow path as a countermeasure against allergies, and the pressure loss of the air supply flow path has further increased, and there has been a problem that the air supply volume becomes smaller than the exhaust air volume. .

  In recent years, the number of houses with low ceilings has been increasing. Therefore, it is required to reduce the height of the ventilator, and the amount of air supply can be reduced by reducing the height of the ventilator. Therefore, there is a demand for a predetermined air supply amount to be obtained even if the height of the ventilation device is lowered.

  The present invention solves such a conventional problem, can prevent a negative pressure in the room, and secures a predetermined air supply amount even if the height of the main body is lowered. It aims at providing the simultaneous supply and discharge type ventilation device which can do.

  In order to achieve the above object, the simultaneous supply / exhaust type ventilator according to the present invention is provided in the exhaust fan casing in a portion where the indoor exhaust port and the outdoor exhaust port of the main body communicate with each other and from the side closer to the exhaust fan. Formed from the upstream side outside the air supply fan casing to the outdoor air supply port at the exhaust passage formed to reach the external exhaust port and the portion where the outdoor air supply port and the indoor air supply port of the main body communicate with each other And an air supply channel formed wider than the exhaust channel as a whole.

  By this means, a predetermined air supply amount can be ensured so that the room does not become negative pressure, and odors and the like can be prevented from entering the room.

  Further, another means is an exhaust formed in the exhaust fan casing at a portion where the indoor exhaust port and the outdoor exhaust port communicate with each other and from the exhaust fan side to the duct connection side of the two-layer duct connection portion. A flow path, and a supply flow path formed from the upstream side outside the supply fan casing to the connection side of the two-layer duct connection portion at a portion where the outdoor supply port and the indoor supply port communicate with each other. And the air supply channel is formed wider than the exhaust channel as a whole.

  By this means, it is possible to secure a predetermined air supply amount so that the room does not become negative pressure, and it is possible to prevent odors such as toilets from entering the room.

  Another means is that the air supply passage is partially formed wider than the exhaust passage.

  By this means, it is not necessary to form a complicated shape in order to match the openings, and it is possible to configure without providing other parts by changing the shape of only the opening where the influence of resistance is reduced.

  In another means, the flow path on the supply air inlet side of the supply flow path is formed wider than the flow path on the exhaust outlet side of the exhaust flow path.

  By this means, it is possible to ensure a stable supply / discharge balance without changing the ratio of the air flow rate between the supply air flow path and the exhaust flow path.

  The other means is that the supply air inlet opening of the supply air fan casing communicating with the supply air inlet side of the supply air flow path is wider than the exhaust air outlet opening of the exhaust fan casing communicating with the exhaust outlet side of the exhaust flow path. Formed.

  By this means, it is possible to increase the amount of air supply by increasing the proportion of the height of the air supply fan casing without changing the height of the main body.

  Another means is that the outdoor air supply port provided in the main body is formed wider than the outdoor exhaust port.

  By this means, since the air supply passage can be made wider than the exhaust passage only by the shape of the main body, it is not necessary to make the casing part and the duct connection part complicated.

  Another means is that the air supply communication passage of the duct connection portion communicating with the air supply inlet side of the air supply passage is formed wider than the exhaust communication passage of the duct connection portion communicating with the exhaust outlet side of the exhaust flow passage. is there.

  By this means, it is not necessary to make the shape of the main body and the casing part complicated by forming a large air supply communication path in the duct connection portion.

  Another means is that the air supply communication path of the duct connecting portion is narrower than the outdoor air supply port formed in the main body.

  By this means, there is no pressure loss and less wind leaks through the gap.

  In another means, the air inlet side of the air supply passage and the air supply passage of the duct connection portion, and the exhaust outlet side of the exhaust passage and the exhaust communication passage of the duct connection port are formed in the same shape.

  By this means, the ventilation resistance is reduced, and the leakage of air at the connecting portion can be reduced.

  The other means is that the air supply communication passage and the exhaust communication passage provided in the duct connection part are formed vertically on the main body side in the horizontal direction, and the duct side is provided in the same shape on the left and right in the vertical direction. The air supply communication passage and the exhaust communication passage are formed to be twisted in the connection portion.

  By this means, in the outdoor hood provided outside the duct, the exhaust port and the air supply port are formed in the left-right direction, so that the duct is normally partitioned in the center in the vertical direction, and the same shape exhaust path is provided on the left and right. Since the air passage is formed, it is suitable to use such a general duct.

  The other means is configured such that the lateral width of the outdoor air supply port provided in the main body is made larger than the lateral width of the outdoor exhaust port, so that the air supply amount is larger than the exhaust amount.

  By this means, the air supply passage can be formed wider than the exhaust passage, and there is no need to increase the main body height.

  Another means is that an exhaust fan casing is provided facing the indoor side of the main body, and an air supply fan casing is provided adjacent to the exhaust fan casing and on the non-indoor side of the main body. .

  By this means, noise can be reduced, the height can be lowered, and the present invention can be applied to a house with a low ceiling.

  Another means is that the exhaust fan casing and the air supply fan casing are arranged side by side facing the indoor side of the main body.

  By this means, noise can be reduced.

  Another means is that a filter case having a filter is detachably provided from below the exhaust fan casing, and the filter is disposed across the air supply passage.

  By this means, the air supply flow path and the exhaust flow path can be integrated to partition the flow paths, and the space in the casing can be used effectively.

  Another means is that the filter case is provided with a guide guide for guiding the exhaust flow from the exhaust outlet of the exhaust passage to the exhaust communication passage of the duct connecting portion.

  By this means, the air path resistance from the exhaust outlet of the exhaust passage to the exhaust communication passage of the duct connecting portion can be reduced, and a guide guide can be provided using the filter case.

  According to the present invention, there is provided a simultaneous supply / exhaust ventilation device capable of ensuring a predetermined air supply amount so that the outdoor pressure does not become negative pressure and preventing odors and the like from entering the room. Can be provided.

  In addition, it is possible to provide a simultaneous supply / exhaust type ventilation device that can increase the amount of air supply without increasing the height of the main body.

  Further, the air supply amount can be increased at the duct connecting portion, and a vertical airflow adapted to a generally used duct can be formed.

  Further, there is no pressure loss, and air leakage from the gap can be prevented.

  Also, the exhaust fan can be easily attached and detached.

  In addition, the space in the casing can be effectively used to simultaneously purify the supply air flow and the exhaust flow.

  The simultaneous supply / exhaust ventilation device according to claim 1 of the present invention is provided with an indoor side exhaust port and an indoor side air supply port facing the room side, and an outdoor side exhaust port and an outdoor side air supply port. A main body to be arranged; an exhaust fan in which an exhaust fan provided in the main body is surrounded by an exhaust fan casing; an air supply fan in which an air supply fan is surrounded by an air supply fan casing; An exhaust passage formed in the exhaust fan casing at a portion where the indoor side exhaust port and the outdoor side exhaust port of the main body communicate with each other and extending from the exhaust fan side to the outdoor side exhaust port; An air supply flow path formed from the upstream side outside the air supply fan casing to the outdoor air supply port at a portion where the air supply port communicates with the indoor air supply port, the outdoor exhaust port and the outdoor side of the main body Set in the main body to communicate with the air supply port. The air supply passage is formed wider than the exhaust passage as a whole, and the room has a negative pressure by ensuring the air supply amount is greater than the exhaust amount. It is prevented that dirty air in other places flows into the room and the odor is dissipated through the gaps in the room, and the user is not discomforted.

  The simultaneous supply / exhaust ventilation device according to claim 2 is provided with an indoor side exhaust port and an indoor side air supply port facing the outdoor side, and an outdoor side exhaust port and an outdoor side air supply port. A main body to be arranged; an exhaust fan in which an exhaust fan provided in the main body is surrounded by an exhaust fan casing; an air supply fan in which an air supply fan is surrounded by an air supply fan casing; The two-layer duct connecting portion provided in the main body so as to communicate with the outdoor exhaust port and the outdoor air supply port of the main body, and the exhaust fan casing at a portion where the indoor exhaust port and the outdoor exhaust port communicate with each other The exhaust air flow path formed from the exhaust fan side to the duct connection side of the two-layer duct connection portion and the outdoor air supply port and the indoor air supply port communicate with each other. Front from outside of the fan casing An air supply passage formed so as to reach the duct connection side of the two-layer duct connection portion, and the air supply passage is formed wider than the exhaust passage as a whole, and the air supply amount is ensured to be equal to or greater than the exhaust amount. This prevents negative pressure in the room, prevents dirty air from flowing into the room from passing through the gaps in the room and dissipating odors, and makes the user uncomfortable. Has the effect of eliminating.

  In the invention according to claim 3, the air supply passage is formed partially wider than the exhaust passage, and it is not necessary to form a complicated shape in order to match the opening, and the influence of resistance is reduced. By changing the shape of only the opening of the part, it has the effect that it can be configured without providing other parts.

  According to a fourth aspect of the present invention, the flow path on the air supply inlet side of the air supply flow path is formed wider than the flow path on the exhaust outlet side of the exhaust flow path, and the fan casing and the duct connecting portion are in contact with each other. By forming a wide flow path on the supply air inlet side of the communication supply air flow path, it is possible to ensure a stable supply / discharge balance without changing the air volume ratio between the supply air flow path and the exhaust flow path. Have

  According to a fifth aspect of the present invention, there is provided an exhaust outlet of the exhaust fan casing that communicates the supply inlet opening of the supply fan casing communicating with the supply inlet side of the supply passage with the exhaust outlet side of the exhaust passage. It is formed wider than the opening, and it can increase the amount of air supply by increasing the ratio of the height of the air supply fan casing without changing the height of the main body, and can produce the air volume at a lower rotational speed Has the effect of being able to.

  The invention according to claim 6 is such that the outdoor air supply port provided in the main body is formed wider than the outdoor exhaust port, and the air supply channel can be made wider than the exhaust flow channel only by the shape of the main body. And the duct connecting portion does not need to have a complicated shape.

  In the invention according to claim 7, the air supply communication passage of the duct connection portion communicating with the air supply inlet side of the air supply passage is formed wider than the exhaust communication passage of the duct connection portion communicating with the exhaust outlet side of the exhaust flow passage. As a result, by forming the flow passage area of the air supply communication passage wide at the duct connection portion, there is an effect that the shapes of the main body and the casing need not be complicated.

  The invention according to claim 8 is such that the air supply communication passage of the duct connection portion is narrower than the outdoor air supply port formed in the main body, and the flow area of the air supply communication passage of the duct connection portion is small. By being formed narrower than the outdoor air supply port formed in the main body, there is no pressure loss, and there is an effect that air leaks less from the gap.

  According to the ninth aspect of the present invention, the air supply inlet side of the air supply passage and the air supply communication passage of the duct connection portion, and the exhaust outlet side of the exhaust flow passage and the exhaust communication passage of the duct connection portion are formed in the same shape. It has a function of reducing ventilation resistance and reducing air leakage at the connecting portion.

  In the invention according to claim 10, the air supply communication passage and the exhaust communication passage provided in the duct connecting portion are formed vertically on the main body side in the horizontal direction, and the duct side is provided in the same shape on the left and right in the vertical direction. In the duct connecting portion, the air supply communication passage and the exhaust communication passage are twisted, and the outdoor hood provided on the outdoor side of the duct has an exhaust port and an air supply port formed in the left-right direction. The normal duct partitions the center in the vertical direction and forms an exhaust passage and an air supply passage having the same shape on the left and right sides, so that it has an effect that it is suitable for using a general duct.

  The invention according to claim 11 is such that the lateral width of the outdoor exhaust port provided in the main body is formed larger than the lateral width of the outdoor exhaust port so that the air supply amount is larger than the exhaust amount, and the height direction of the main body is In a limited case, the height direction of the opening on the duct connection part side of the main body cannot be formed large, so that the supply air passage is made larger than the exhaust passage by forming the supply opening wide. It has the effect | action that it can respond, without making the height of a main body high.

  According to a twelfth aspect of the present invention, an exhaust fan casing is provided facing the indoor side of the main body, and an air supply fan casing is provided adjacent to the exhaust fan casing and on the opposite side of the interior of the main body. Because the fan diameter of the air supply fan can be made larger, the number of rotations can be reduced to reduce noise, and the body height can be lowered, so it can be installed in houses with low ceilings. Moreover, it has the effect | action that it becomes easy to attach or detach at the time of the cleaning of the exhaust fan which indoor large dust tends to adhere.

  According to a thirteenth aspect of the present invention, an exhaust fan casing and an air supply fan casing are arranged side by side facing the indoor side of the main body. There is no need to twist the air supply and exhaust communication passages in the connection part, and the flow path between the main body and the duct connection part is in a straight line and can be directly supplied and discharged, so that noise can be reduced. Have

  The invention according to claim 14 is provided such that a filter case having a filter is detachably provided from below the exhaust fan casing, and the filter is disposed across the supply air flow path. The exhaust flow paths are integrated to partition the flow paths, and the space in the exhaust fan casing and the air supply fan casing can be used effectively.

  According to a fifteenth aspect of the present invention, the filter case is provided with a guide guide for guiding an exhaust flow from the exhaust outlet of the exhaust passage to the exhaust communication passage of the duct connection portion. The air path from the exhaust pipe to the duct connection section can be smoothed by the guide guide and the air path resistance can be reduced, and the guide guide can be provided by using a filter case to prevent an increase in the number of parts. .

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

(Embodiment 1)
As shown in FIGS. 1 to 5, the box has an open bottom surface, and has an indoor exhaust port 1 and an indoor air supply port 2 on the lower surface, and an outdoor exhaust port 3 and an outdoor air supply port 4 on the side surface. An exhaust fan 10 formed so as to be driven by a motor 9 by providing an attachment flange 5 around the opening on the lower surface to form a main body 6, surrounding the exhaust fan 7 with an exhaust fan casing 8, and An air supply fan 13 having a diameter larger than that of the exhaust fan 7 and surrounded by an air supply fan casing 12 and driven by a motor 9 faces the indoor side of the main body 6. An exhaust fan casing 8 is provided, an air supply fan casing 12 is provided adjacent to the exhaust fan casing 8 and on the opposite side of the interior of the main body 6, and the indoor exhaust port 1 and the outdoor exhaust port 3 of the main body 6 communicate with each other. In the exhaust fan casing 8 of the part to be exhausted. Upstream of the air supply fan casing 12 at a portion where the exhaust air flow path 14 formed from the vicinity of the engine 7 to the outdoor air outlet 3 and the outdoor air inlet 4 and the indoor air inlet 2 of the main body 6 communicate with each other. An air supply passage 15 formed from the side to the outdoor air supply port 4 is formed.

  Further, in the two-layer duct connecting portion 17 connecting the two-layer duct 16 communicating with the outside, the air supply communication passage 18 connected to the outdoor air supply port 4 of the main body 6 and the duct 16 and the main body 6 are connected. An exhaust communication path 19 connected to the outdoor exhaust port 3 and communicating with the duct 16 is provided, and the air supply communication path 18 and the exhaust communication path 19 are formed vertically in the horizontal direction on the main body 6 side, and the duct 16 side in the vertical direction. The air supply communication passage 18 and the exhaust communication passage 19 are formed to be twisted by 90 ° in the duct connecting portion 17 so that the same shape of the air supply communication passage inlet 18a and the exhaust communication passage outlet 19a are provided on the left and right.

  Further, in the exhaust fan casing 8 at a portion where the indoor side exhaust port 1 and the outdoor side exhaust port 3 communicate with each other so as to include the exhaust flow path 14 and the exhaust communication passage 19, two layers of ducts from the vicinity of the exhaust fan 7. A portion where the exhaust air flow path is formed to reach the duct connection side of the connecting portion 17 and the outdoor air supply port 4 and the indoor air supply port 2 communicate so as to include the air supply flow channel 15 and the air supply communication passage 18. Thus, an air supply passage is formed from the upstream side outside the air supply fan casing 12 to the duct connection side of the two-layer duct connection portion 17.

  Further, the flow passage area of the outdoor air supply port 4 with respect to the outdoor air discharge port 3 provided in the main body 6, the flow area of the air supply inlet 20 of the air supply flow channel 15 with respect to the exhaust outlet 21 of the exhaust flow channel 14, and a duct The flow passage area of the air supply communication passage 18 with respect to the exhaust communication passage 19 of the connecting portion 17 is formed so as to be approximately five times larger, and the air supply flow passage 15 is formed partially wider than the exhaust flow passage 14.

  Further, a duct is connected to the supply air inlet 20 of the supply air flow channel 15 and the exhaust outlet 21 of the exhaust gas flow channel 14 from a partition plate 24 that partitions the flow channel into an exhaust passage 22 and an air supply passage 23 and from the exhaust outlet 21 of the exhaust passage 14. A filter 28 is provided in the exhaust passage 22 and the air supply passage 23 of the filter case 27 provided with the guide guide 25 and the handle 26 for guiding the exhaust flow to the exhaust communication passage 19 of the section 17, and exhaust is performed from below the exhaust fan casing 8. A filter case 27 is detachably provided through a handle 26 so as to be disposed in the air supply fan casing 12 through the air fan casing 8, and a filter 28 is provided across the air supply flow path 15.

  Moreover, the exhaust port 30 connected to the indoor side exhaust port 1 of the main body 6 attached to the ceiling plate 29 via the flange portion 5 and the cylindrical portion 31 forming the indoor side air supply port 2 of the main body 6 are inserted and inserted. A louver 34 provided with an air supply port 33 formed through a connecting cylinder 32 to be connected is attached to the main body 6 so as to cover the lower surface opening of the main body 6.

  In the above configuration, when the simultaneous supply / exhaust ventilation device is operated, the exhaust blower 10 and the supply blower 13 are driven, the indoor air is sucked in from the exhaust port 30 provided in the louver 34, and the indoor exhaust port of the main body 6. 1 through the exhaust passage 14, the exhaust flow is guided to the outdoor exhaust port 3 by the guide guide 25, passes through the outdoor exhaust port 3, passes through the exhaust communication path 19 of the duct connection portion 17, and is discharged to the outside through the duct 16. Is done. On the other hand, the air supply fan 13 supplies outdoor air through the duct 16, the air supply passage 18 of the duct connection portion 17, and the purified air supply through the filter 28 from the outdoor air supply port 4. Air is supplied into the air flow path 15 and is supplied from the air supply port 33 of the louver 34 through the connecting tube 32 from the indoor air supply port 2 formed by the cylindrical portion 31 and is simultaneously supplied and discharged. .

  Since the air supply passage is formed wider than the exhaust passage as a whole, the resistance of the air supply passage is reduced compared to the exhaust passage, a predetermined air supply amount can be secured, and the room has a negative pressure. And no external odors or the like enter the room through the gap. “Widely formed as a whole” means that the volume of the total flow path of each flow path is wider in the air supply flow path.

  Further, since the air supply inlet 20 of the air supply passage 15 is formed wider than the exhaust outlet 21 of the exhaust passage 14, stable air supply / discharge can be achieved without changing the air volume ratio in the air supply passage 15 and the exhaust passage 14. Balance can be secured.

  Further, since the outer diameter of the air supply fan 11 forming the air supply fan 13 can be increased, the number of rotations can be reduced to reduce noise, and the height of the main body 6 can be reduced. It can also be installed in houses with low ceilings.

  When the exhaust fan 7 is contaminated and cleaned by sucking indoor air containing large dust, the exhaust fan 7 is taken out from the exhaust fan casing 8 from the opening side of the lower surface of the main body 6 after the louver 34 is removed. Can be cleaned.

  In addition, the filter case 27 is disposed across the exhaust flow path 14 and the air supply flow path 15, and the air supply flow path is disposed due to the filter 28 disposed across the air supply flow path 15. 15 can be collected by the filter 28, the space in the exhaust fan casing 8 and the air supply fan casing 12 can be used effectively, and the guide guide 25 is utilized by using the filter case 27. Can also be provided.

  When the filter 28 is contaminated, the filter 28 provided on the filter case 27 can be cleaned by removing the louver 34 and then removing the filter case 27 from the lower surface opening of the main body 6 via the handle 26. .

  Further, the air supply communication passage 18 and the exhaust communication passage 19 provided in the duct connection portion 17 are formed so that the main body 6 side is formed vertically in the horizontal direction, and the duct 16 side is provided in the same shape on the left and right in the vertical direction. By forming the air supply communication passage 18 and the exhaust communication passage 19 in the portion 17 so as to be twisted, it is possible to directly connect to the duct 16 having the exhaust passage and the air supply passage on the left and right sides, and easily connect the duct. The part 17 and the duct 16 can be connected.

(Embodiment 2)
As shown in FIG. 6, the air supply passage 20A side of the air supply passage 15A and the air supply passage 18A of the duct connection portion 17A, and the exhaust communication passage 19A of the exhaust passage 14A and the exhaust connection passage 17A of the duct connection portion 17A are provided. A filter case 27A formed in the same shape and provided with a filter 28A is provided so as to be detachable across the exhaust outlet 21A and the air supply inlet 20A. Other components are the same as those in FIG. 1 shown in the first embodiment, and the description thereof is omitted.

  In the above configuration, when the simultaneous supply / exhaust ventilation device is operated, the exhaust air blower 10A forms the exhaust air 21A of the exhaust passage 14A and the exhaust communication passage 19A of the duct connection portion 17A in an opening area having the same shape. As a result, the ventilation resistance to the exhaust flow decreases and the exhaust flow flows smoothly. In addition, since the air supply passage 18A of the duct connection portion 17A and the air supply inlet 20A of the air supply passage 15A are formed in the same opening area, the airflow resistance to the air supply flow is reduced, and the air supply air flows smoothly. Flowing. Further, it is necessary to reduce the air leakage at the connection portion between the main body 6A side and the duct connection portion 17A, and to provide a guide or the like for guiding the exhaust flow to the exhaust communication passage 19A of the duct connection portion 17A in the filter case 27A. Disappear.

(Embodiment 3)
As shown in FIG. 7, it is set as the structure which formed the air supply communication path 18B of the duct connection part 17B narrower than the outdoor air supply port 4A formed in the main body 6B. Other components are the same as those in FIG. 1 described in the first embodiment. The description is omitted.

  In the above configuration, when the simultaneous supply / exhaust type ventilation device is operated, the air supply air is supplied to the outdoor air supply port 4A of the main body 6B from the air supply passage 18B of the duct connection portion 17B. At this time, since the flow passage area of the air supply communication passage 18B of the duct connection portion 17B is formed narrower than the outdoor air supply port 4A formed in the main body 6B, the air supply air flows in the duct connection portion 17B having a narrow area. From the air supply communication path 18B, the air flows into the outdoor air supply port 4A having a large area of the main body 6B, so that pressure loss is eliminated and air is not leaked by the connecting portion.

(Embodiment 4)
As shown in FIG. 8, the lateral width dimension (A) of the outdoor air supply port 4B provided in the main body 6C is made larger than the lateral width dimension (B) of the outdoor air outlet 3A, so that the air supply amount becomes larger than the exhaust amount. It is comprised as follows.

  In the above-described configuration, when the height direction of the outdoor air supply port 4B that becomes the duct connection portion side opening of the main body 6C cannot be formed large, by increasing the lateral width of the outdoor air supply port 4B, The passage 15B can be made larger than the exhaust passage 14B, and the amount of air supply can be increased without increasing the height of the main body 6C.

(Embodiment 5)
As shown in FIG. 9, the exhaust fan casing 8 </ b> A and the air supply fan casing 12 </ b> A are arranged side by side facing the opening below the main body 6 </ b> D.

  In the above configuration, the outdoor exhaust port 3B and the outdoor air supply port 4C formed in the main body 6D are juxtaposed on the left and right of the main body 6D, so that the duct connection portion 17C is partitioned in the vertical direction by the partition portion 35, An air supply communication passage 18C and an exhaust communication passage 19B formed on the left and right can be used, and the flow paths of the air supply communication passage 18C and the exhaust communication passage 19B are twisted so as to change the direction between the main body 6D side and the duct side. However, the outdoor exhaust port 3B and the outdoor air supply port 4C of the main body 6D and the exhaust communication passage 19B and the air supply communication passage 18B of the duct connection portion 17C are in a straight line state and can be directly supplied and discharged. It becomes possible, and noise can be reduced.

  The present invention can be applied to a range exhaust fan, a heat exchange type exhaust fan, and a simultaneous supply / exhaust range hood using a technical configuration in which the supply air amount is larger than the exhaust amount.

Sectional drawing of the simultaneous supply / exhaust type ventilation apparatus of Embodiment 1 of this invention The perspective view which shows the duct connection part of the duct side of the same simultaneous supply / exhaust type ventilation apparatus Side view of the main body of the simultaneous supply / exhaust type ventilation system Side view showing the configuration of the duct connection part of the simultaneous supply / exhaust ventilator Sectional view of the filter case with the same supply / exhaust ventilation device filter Sectional drawing of the simultaneous supply / exhaust type ventilation apparatus of Embodiment 2 of this invention Sectional drawing of the simultaneous supply / exhaust ventilation apparatus of Embodiment 3 of this invention Side view of the main body of the simultaneous supply / exhaust ventilation device according to the fourth embodiment of the present invention. A bottom view of the simultaneous supply / exhaust ventilation device according to the fifth embodiment of the present invention. Cross-sectional view of a conventional ventilation device

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Indoor side exhaust port 2 Indoor side air supply port 3 Outdoor side exhaust port 3A Outdoor side exhaust port 4 Outdoor side air supply port 4A Outdoor side air supply port 4B Outdoor side air supply port 6 Main body 6D Main body 7 Exhaust fan 8 For exhaust Fan casing 8A Exhaust fan casing 10 Exhaust fan 11 Supply fan 12 Supply fan casing 12A Supply fan casing 13 Supply fan 14 Exhaust channel 14A Exhaust channel 15 Supply channel 15A Supply channel 16 Duct 17 Duct connection portion 17A Duct connection portion 17B Duct connection portion 18 Supply air communication passage 18A Supply air communication passage 18B Supply air communication passage 19 Exhaust communication passage 19A Exhaust communication passage 20 Supply air inlet 20A Supply air inlet 21 Exhaust outlet 21A Exhaust outlet 25 Guide Guide 27 Filter Case 28 Filter

Claims (15)

A main body disposed inside the ceiling and an exhaust fan provided in the main body, provided with an indoor exhaust port and an indoor air supply port facing the indoor side, and an outdoor exhaust port and an outdoor air supply port The exhaust fan that surrounds the exhaust fan casing, the air supply fan that surrounds the air supply fan with the air supply fan casing, and a portion where the indoor exhaust port and the outdoor exhaust port of the main body communicate with each other In the exhaust fan casing, the exhaust passage formed from the exhaust fan side to the outdoor exhaust port, and a portion where the outdoor air supply port and the indoor air supply port communicate with each other. Two layers provided in the main body so as to communicate with an air supply passage formed from an upstream side outside the air fan casing to the outdoor air supply port, and an outdoor exhaust port and an outdoor air supply port of the main body And a duct connection part. The hourly discharge type ventilator the structure where the channel was wider overall than the exhaust passage. A main body disposed inside the ceiling, an exhaust fan provided in the main body, provided with an indoor exhaust port and an indoor air supply port facing the outdoor side, and an outdoor exhaust port and an outdoor air supply port Is connected to an exhaust fan that surrounds the exhaust fan casing, an air supply fan that surrounds and forms the air supply fan with the air supply fan casing, and the outdoor exhaust port and the outdoor air supply port of the main body. As described above, the two-layer duct connection portion provided in the main body and the two-layer duct in the exhaust fan casing at a portion where the indoor exhaust port and the outdoor exhaust port communicate with each other from the exhaust fan side. The two-layer duct connection from the upstream side outside the air supply fan casing at the portion where the exhaust passage formed to reach the duct connection side of the connection portion and the outdoor air supply port and the indoor air supply port communicate with each other To the duct connection side Made by a inlet channel, the inlet channel and the exhaust channel the hourly discharge type ventilator to overall wider the configuration from. The simultaneous supply / exhaust type ventilator according to claim 1 or 2, wherein the supply air passage is formed partially wider than the exhaust passage. The simultaneous supply / exhaust type ventilator according to claim 1 or 2, wherein a flow path on a supply inlet side of the supply flow path is formed wider than a flow path on the exhaust outlet side of the exhaust flow path. The air supply inlet opening of the air supply fan casing communicating with the air supply inlet side of the air supply flow path is formed wider than the exhaust outlet opening of the exhaust fan casing communicating with the exhaust outlet side of the exhaust flow path. 2. The simultaneous supply / exhaust type ventilation device according to 2, or 3. The simultaneous supply / exhaust type ventilator according to claim 1, 2, or 3, wherein the outdoor air supply port provided in the main body is formed wider than the outdoor exhaust port. The air supply communication path of the duct connection part connected with the air supply inlet side of the said air supply flow path was formed wider than the exhaust communication path of the duct connection part connected with the exhaust outlet side of the said exhaust flow path. Simultaneous supply / exhaust ventilation system. The simultaneous supply / exhaust type ventilation device according to claim 1 or 3, wherein an air supply passage of the duct connection portion is narrower than an outdoor air supply port formed in the main body. 8. The air supply passage of the air supply passage and the duct connection portion, and the exhaust communication passage of the exhaust passage and the duct connection portion of the exhaust passage are formed in the same shape. Simultaneous supply / exhaust ventilation system. The air supply communication passage and the exhaust communication passage provided in the duct connection portion are formed vertically in the horizontal direction on the main body side, and the air supply communication passage in the duct connection portion is provided in the same shape on the left and right in the vertical direction. The simultaneous supply / exhaust type ventilator according to any one of claims 7 to 9, wherein the exhaust communication passage is twisted. The simultaneous supply / exhaust type according to any one of claims 1 to 10, wherein a lateral width of an outdoor air supply port provided in the main body is formed to be larger than a lateral width of the outdoor exhaust port so that the air supply amount is larger than the exhaust amount. Ventilation device. The exhaust fan casing is provided facing the indoor side of the main body, and the air supply fan casing is provided adjacent to the exhaust fan casing and provided on the non-indoor side of the main body. Simultaneous supply / exhaust ventilation system. The simultaneous supply / exhaust type ventilation device according to any one of claims 1 to 7, wherein an exhaust fan casing and an air supply fan casing are arranged in parallel facing the indoor side of the main body. The simultaneous supply / exhaust type ventilator according to any one of claims 1 to 7, wherein a filter case having a filter is detachably provided from below the exhaust fan casing, and the filter is disposed across the supply air flow path. The simultaneous supply / exhaust type ventilator according to any one of claims 1 to 7, wherein the filter case is provided with a guide for guiding an exhaust flow from an exhaust outlet of the exhaust passage to an exhaust communication path of the duct connection portion.

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