JP7069872B2 - Ventilation system - Google Patents

Description

The present invention relates to a heat exchange type ventilation device that exchanges heat between the outside air and the indoor air to supply and exhaust heat.

Conventionally, a heat exchange type ventilation device has been proposed in which heat exchange is performed between the outside air and the indoor air to supply fresh air (outside air) whose temperature has been adjusted. In such a heat exchange type ventilation device, for example, when the outside air is colder than the indoor air in the summer, or when the outside air is warmer than the indoor air in the winter, depending on the temperature of the outside air, the outside air and the room The effect obtained by exchanging heat with air may be small.

Therefore, there is a technology that has a bypass air passage that does not pass through the heat exchange element and an air passage opening / closing damper that opens / closes the bypass air passage, and opens the air passage opening / closing damper under predetermined conditions so that air can be sent to the bypass air passage. It has been proposed (see, for example, Patent Document 1).

Japanese Patent No. 6142502

The air passage opening / closing part such as the air passage opening / closing damper has a movable component that is driven by a motor or the like. Therefore, it is necessary to be able to inspect. Conventionally, the heat exchange element is removed from the main body of the device, and the air passage opening / closing part can be attached / detached through the space where the heat exchange element is attached. Therefore, in order to inspect the air passage opening / closing part, it is necessary to remove the heat exchange element from the main body of the apparatus, and it is not possible to easily inspect the air passage opening / closing part.

The present invention has been made to solve such a problem, and an object of the present invention is to provide a ventilation device capable of easily inspecting an air passage opening / closing portion.

In order to solve the above-mentioned problems, the present invention comprises a heat exchange element that exchanges heat between the outside air sucked from the outside and the return air sucked from the room, a device main body to which the heat exchange element is attached, and a device main body to which the heat exchange element is attached. Detachment port where the heat exchange element is inserted and removed from the device body, the ventilation port provided on the upper surface of the device body, the heat exchange air passage through which the air passing through the ventilation port passes through the heat exchange element, and the air passing through the ventilation port. Is provided on the outside of the non-heat exchange air passage that does not pass through the heat exchange element and bypasses the heat exchange element, the air passage opening / closing part that opens / closes the non-heat exchange air passage, and the attachment / detachment port, and opens / closes the air passage with respect to the main body of the device. A ventilation device is provided with a mounting portion to which a portion can be attached and detached, and the mounting portion is provided at a ventilation port, and an air passage opening / closing portion is attached to and detached from the upper surface of the apparatus main body .

In the present invention, the attachment portion to which the air passage opening / closing portion is attached is provided on the outside of the attachment / detachment port into which the heat exchange element is inserted / removed, and the air passage opening / closing portion can be attached / detached without passing through the attachment / detachment port.

According to the present invention, the air passage opening / closing portion can be attached to and detached from the apparatus main body without removing the heat exchange element from the apparatus main body, and the air passage opening / closing portion can be easily inspected and replaced.

It is sectional drawing which shows an example of the heat exchange type ventilation apparatus of this embodiment. It is a front sectional view which shows an example of the air passage composition of the heat exchange type ventilation apparatus of this embodiment. It is a side sectional view which shows an example of the air passage composition of the heat exchange type ventilation apparatus of this embodiment. It is sectional drawing of the main part which shows an example of the air passage composition of the heat exchange type ventilation apparatus of this embodiment. It is a front view which shows an example of the appearance structure of the heat exchange type ventilation apparatus of this embodiment. It is a top view which shows an example of the appearance structure of the heat exchange type ventilation apparatus of this embodiment. It is a perspective view which shows the state which removed the front plate of the heat exchange type ventilation apparatus of this embodiment. It is a breaking perspective view which shows an example of the air passage opening / closing damper of 1st Embodiment. It is an external perspective view which shows an example of the air passage opening / closing damper of 1st Embodiment. It is a perspective view which shows an example of the attachment / detachment structure of the air passage opening / closing damper of 1st Embodiment. It is a schematic block diagram which shows an example of the building where the heat exchange type ventilation apparatus of this embodiment is installed. It is explanatory drawing which shows an example of the operation of the heat exchange type ventilation apparatus of this embodiment. It is explanatory drawing which shows an example of the operation of the heat exchange type ventilation apparatus of this embodiment. It is a perspective view which shows the modification of the attachment / detachment structure of the air passage opening / closing damper of 1st Embodiment. It is a perspective view which shows an example of the attachment / detachment structure of the air passage opening / closing damper of 2nd Embodiment.

Hereinafter, the heat exchange type ventilator as an embodiment of the ventilator of the present invention will be described with reference to the drawings.

<Overall configuration example of the heat exchange type ventilation device of this embodiment>
FIG. 1 is a cross-sectional perspective view showing an example of a heat exchange type ventilator according to the present embodiment. Further, FIG. 2 is a front sectional view showing an example of the air passage configuration of the heat exchange type ventilator of the present embodiment, and FIG. 3 shows an example of the air passage configuration of the heat exchange type ventilator of the present embodiment. A side sectional view and FIG. 4 are cross-sectional perspective views of a main part showing an example of an air passage configuration of the heat exchange type ventilator of the present embodiment. Further, FIG. 5 is a front view showing an example of the external configuration of the heat exchange type ventilator of the present embodiment, and FIG. 6 is a top view showing an example of the external configuration of the heat exchange type ventilator of the present embodiment. be. Further, FIG. 7 is a perspective view showing a state in which the front plate of the heat exchange type ventilation device of the present embodiment is removed.

The heat exchange type ventilation device 1A of the present embodiment is used in a form in which the device main body 10 is installed on the floor of a building. The heat exchange type ventilator 1A includes a heat exchange element 2 for exchanging heat between the outside air OA sucked from the outside and the return air RA sucked from the room in the device main body 10.

Further, the heat exchange type ventilator 1A sucks the outside air OA from the outside and blows out the outside air OA heat exchanged with the return air RA by the heat exchange element 2 into the room as the supply air SA. Be prepared.

Further, the heat exchange type ventilator 1A is provided with an exhaust fan 3EA in the apparatus main body 10 which sucks the return air RA from the room and blows out the return air RA heat exchanged with the outside air OA by the heat exchange element 2 to the outside as an exhaust EA. ..

The heat exchange type ventilation device 1A has a configuration in which a ventilation port through which air passes is provided on the upper surface portion 10U of the device main body 10, and the outside air suction port 10OA into which the outside air OA from the outside is sucked and the air supply SA into the room are blown out. The air supply outlet 10SA is provided on the upper surface portion 10U of the apparatus main body 10. Further, the heat exchange type ventilation device 1A is provided with a return air suction port 10RA for sucking the return air RA from the room and an exhaust outlet 10EA for blowing out the exhaust EA to the outside on the upper surface portion 10U of the device main body 10. ..

In the heat exchange type ventilation device 1A, in this example, the return air suction port 10RA and the supply air outlet 10SA, which are examples of ventilation ports, are provided in parallel on the front side of the upper surface portion 10U of the device main body 10, and the outside air is sucked. The port 10OA and the exhaust outlet 10EA are provided in parallel on the back surface side of the upper surface portion 10U of the apparatus main body 10.

Further, in the heat exchange type ventilation device 1A, the return air suction port 10RA and the outside air suction port 10OA are provided on the left side when the device main body 10 is viewed from the front, and the supply air outlet 10SA and the exhaust air outlet 10EA are the device main body 10. Is installed on the right side when viewed from the front.

In the heat exchange type ventilation device 1A, the RA duct joint 11RA is attached to the return air suction port 10RA, and the OA duct joint 11OA is attached to the outside air suction port 10OA. Further, in the heat exchange type ventilation device 1A, the SA duct joint 11SA is attached to the air supply outlet 10SA, and the EA duct joint 11EA is attached to the exhaust outlet 10EA.

The heat exchange type ventilation device 1A is a device in which a material having airtightness and heat insulating properties, in this example, an air passage forming member 12 made of styrofoam is attached to the inside of a housing 11 made of metal or the like. The main body 10 is configured. A front plate 11a is detachably attached to the front side of the housing 11 of the apparatus main body 10, and as shown in FIG. 7, the front side inside the apparatus main body 10 is exposed by removing the front plate 11a.

The heat exchange element 2 is an example of heat exchange means, and the member constituting the first heat exchange air passage 20a through which the outside air OA passes and the member constituting the second heat exchange air passage 20b through which the return air RA passes are the first. It is configured to be alternately laminated so that the air flow between the heat exchange air passage 20a of 1 and the heat exchange air passage 20b of the second heat exchange air passage 20b is shielded. The second heat exchange air passage 20b is an example of the heat exchange air passage.

In this example, the heat exchange element 2 has a return air suction port 21RA formed in the upper part on the left side when the apparatus main body 10 is viewed from the front, and the supply air SA is blown out in the upper part on the right side. The air outlet 21SA is formed. Further, in the heat exchange element 2, an outside air suction port 21OA into which the outside air OA is sucked is formed in the lower part on the left side, and an exhaust outlet 21EA in which the exhaust EA is blown out is formed in the lower part on the right side.

As a result, heat is exchanged with the air sucked from the outside air suction port 21OA at the lower part of the heat exchange element 2, passed through the first heat exchange air passage 20a, and blown out from the air supply outlet 21SA at the upper part of the heat exchange element 2. The flow of air sucked from the return air suction port 21RA at the upper part of the element 2, passes through the second heat exchange air passage 20b, and is blown out from the exhaust outlet 21EA at the lower part of the heat exchange element 2 faces each other.

In the heat exchange type ventilation device 1A, the heat exchange element mounting portion 13 to which the heat exchange element 2 is mounted is provided near the center of the device main body 10 when viewed from the front. The heat exchange element mounting portion 13 is configured by providing a space in the air passage forming member 12, and has a shape matching the shape of the heat exchange element 2 on the front side of the heat exchange element mounting portion 13 with respect to the apparatus main body 10. An attachment / detachment port 13a into which the heat exchange element 2 is inserted / removed is formed.

The heat exchange type ventilation device 1A includes the heat exchange element 2 and the heat exchange element mounting portion 13 so that the heat exchange element 2 attached to the heat exchange element mounting portion 13 is supported so as to be movable in the front-rear direction. In the heat exchange type ventilation device 1A, the attachment / detachment port 13a is exposed by removing the front plate 11a of the device main body 10, and the heat exchange element 2 is configured to be removable from the front side of the device main body 10 by moving in the front-rear direction. ..

The air supply fan 3SA is an example of an air supply / air blowing means, the exhaust fan 3EA is an example of an exhaust air blowing means, and the air supply fan 3SA and the exhaust fan 3EA rotate a rotary-driven multi-bladed impeller 30 and an impeller 30. A motor 30M for making the air passage and a fan case 31 for forming an air passage are provided.

The fan case 31 is an example of an air passage forming means, and is a fan suction port 31a which is a suction portion where air is sucked by the impeller 30 being rotationally driven, and a blowout port where air sucked from the fan suction port 31a is blown out. A fan outlet 31b, which is a unit, is provided.

The air supply fan 3SA and the exhaust fan 3EA are provided with a fan suction port 31a having a circular opening called a bell mouth along the axial direction of the impeller 30. Further, in the air supply fan 3SA and the exhaust fan 3EA, the air sucked from the fan suction port 31a is blown out from the fan outlet 31b along the rotation direction of the impeller 30.

In the heat exchange type ventilator 1A, the air supply fan mounting portion 14SA to which the air supply fan 3SA is mounted is provided on the side of the heat exchange element 2 when the device main body 10 is viewed from the front, in this example, on the upper side on the right side. Be done. The air supply fan 3SA is attached to the air supply fan mounting portion 14SA with the axis of the impeller 30 oriented in the horizontal direction. Further, in the heat exchange type ventilation device 1A, the exhaust fan mounting portion 14EA to which the exhaust fan 3EA is mounted is on the side of the same heat exchange element 2 as the air supply fan mounting portion 14SA when the device main body 10 is viewed from the front, in this example. It is provided at the bottom of the right side. The exhaust fan 3EA is attached to the exhaust fan mounting portion 14EA with the axis of the impeller 30 oriented in the horizontal direction.

The heat exchange type ventilator 1A includes the air supply fan 3SA and the air supply fan mounting portion 14SA so that the air supply fan 3SA attached to the air supply fan mounting portion 14SA is supported so as to be movable in the front-rear direction. The heat exchange type ventilation device 1A is configured to be detachable from the front side of the device main body 10 by moving the air supply fan 3SA in the front-rear direction by removing the front plate 11a of the device main body 10.

Further, the heat exchange type ventilator 1A is provided with a configuration in which the exhaust fan 3EA attached to the exhaust fan mounting portion 14EA is supported so as to be movable in the front-rear direction in the exhaust fan 3EA and the exhaust fan mounting portion 14EA. The heat exchange type ventilation device 1A is configured to be detachable from the front side of the device main body 10 by moving the exhaust fan 3EA in the front-rear direction by removing the front plate 11a of the device main body 10.

In the heat exchange type ventilation device 1A, the return air suction space 15RA through which the return air RA sucked from the return air suction port 21RA of the heat exchange element 2 passes and the exhaust EA blown out from the exhaust outlet 21EA of the heat exchange element 2 pass through. It is equipped with an exhaust outlet space of 15EA.

Further, in the heat exchange type ventilator 1A, the outside air suction space 15OA through which the outside air OA sucked from the outside air suction port 21OA of the heat exchange element 2 passes and the supply air SA blown out from the supply air outlet 21SA of the heat exchange element 2 are provided. It is equipped with a passing air supply air outlet space 15SA.

In the heat exchange type ventilation device 1A, in this example, when the device main body 10 is viewed from the front, a return air suction space 15RA is formed in the upper part on the left side of the air passage forming member 12, and the return air suction space 15RA is formed in the upper part on the right side of the air passage forming member 12. The supply air outlet space 15SA is formed. Further, in the heat exchange type ventilation device 1A, an outside air suction space 15OA is formed in the lower part on the left side of the air passage forming member 12, and an exhaust blowout space 15EA is formed in the lower part on the right side of the air passage forming member 12.

The heat exchange type ventilation device 1A has an air passage configuration in which the return air suction port 10RA is located above the return air suction space 15RA, and the return air suction port 10RA provided on the return air suction space 15RA and the upper surface portion 10U of the device main body 10. The return air suction port 10RA and the return air suction port 21RA of the heat exchange element 2 communicate with each other via the return air suction space 15RA.

Further, the heat exchange type ventilation device 1A has an air passage configuration in which the air supply fan 3SA is located on the side of the air supply air outlet space 15SA, and the air supply air outlet space 15SA and the fan suction port 31a of the air supply fan 3SA communicate with each other.

The heat exchange type ventilator 1A has an air passage configuration in which the air supply outlet 10SA is located above the air supply fan 3SA, and is provided on the fan outlet 31b of the air supply fan 3SA and the upper surface portion 10U of the device main body 10. The air outlet 10SA communicates with each other, and the air supply outlet 10SA and the air supply outlet 21SA of the heat exchange element 2 communicate with each other via the air supply outlet space 15SA and the air supply fan 3SA.

The heat exchange type ventilation device 1A includes an outside air suction air passage 16OA in which the outside air suction port 10OA and the outside air suction space 15OA communicate with each other. In the heat exchange type ventilation device 1A, a space extending in the vertical direction is provided in the air passage forming member 12 on the side of the heat exchange element 2 when the device main body 10 is viewed from the front, that is, on the left side in this example. 16OA is configured.

In the heat exchange type ventilation device 1A, the upper side of the outside air suction air passage 16OA and the outside air suction port 10OA provided on the upper surface portion 10U of the device main body 10 communicate with each other. Further, in the heat exchange type ventilation device 1A, the outside air suction air passage 16OA extends to the side of the outside air suction space 15OA formed in the lower part of the apparatus main body 10, and the lower side of the outside air suction air passage 16OA and the outside air suction space 15OA. Communicate.

Further, in the heat exchange type ventilation device 1A, the outside air suction air passage 16OA and the return air suction space 15RA are partitioned by the air passage forming member 12.

As a result, in the heat exchange type ventilation device 1A, the outside air suction port 10OA and the outside air suction port 21OA of the heat exchange element 2 communicate with each other via the outside air suction air passage 16OA and the outside air suction space 15OA. Further, since the outside air suction air passage 16OA is provided on the side of the heat exchange element 2, the adjacent outside air suction air passage 16OA and the return air suction space 15RA are separated by the air passage forming member 12.

Further, the heat exchange type ventilation device 1A includes an exhaust outlet air passage 16EA in which the exhaust outlet space 15EA and the exhaust outlet 10EA are communicated with each other via the exhaust fan 3EA. In the heat exchange type ventilation device 1A, an exhaust outlet air passage is provided by providing a space extending in the vertical direction on the air passage forming member 12 on the side of the heat exchange element 2 when the device main body 10 is viewed from the front, that is, on the right side in this example. 16EA is configured.

The heat exchange type ventilation device 1A has an air passage configuration in which the exhaust fan 3EA is located on the side of the exhaust blowing space 15EA, and the exhaust blowing space 15EA and the fan suction port 31a of the exhaust fan 3EA communicate with each other to blow the fan of the exhaust fan 3EA. The outlet 31b and the lower side of the exhaust air passage 16EA communicate with each other.

Further, in the heat exchange type ventilation device 1A, the exhaust air passage 16EA passes behind the air supply fan 3SA, and the exhaust outlet 10EA provided on the upper side of the exhaust air passage 16EA and the upper surface portion 10U of the apparatus main body 10 is provided. Communicate.

Further, in the heat exchange type ventilation device 1A, the exhaust air outlet air passage 16EA and the air supply air outlet space 15SA are partitioned by the air passage forming member 12.

As a result, in the heat exchange type ventilation device 1A, the exhaust outlet 10EA and the exhaust outlet 21EA of the heat exchange element 2 communicate with each other via the exhaust outlet space 15EA, the exhaust fan 3EA, and the exhaust outlet air passage 16EA. Further, since the exhaust air outlet 16EA is provided on the side of the heat exchange element 2, the adjacent exhaust air passage 16EA and the air supply air outlet space 15SA are separated by the air passage forming member 12.

As a result, the heat exchange type ventilator 1A has an outside air suction port 10OA, an outside air suction air passage 16OA, an outside air suction space 15OA, a first heat exchange air passage 20a of the heat exchange element 2, a supply air outlet space 15SA, and an air supply fan. An air supply air passage 17SA in which 3SA and an air supply outlet 10SA communicate with each other is formed.

Further, the heat exchange type ventilation device 1A includes a return air suction port 10RA, a return air suction space 15RA, a second heat exchange air passage 20b of the heat exchange element 2, an exhaust outlet space 15EA, an exhaust fan 3EA, and an exhaust outlet air passage 16EA. And an exhaust air passage 17EA through which the exhaust outlet 10EA communicates is formed.

The heat exchange type ventilation device 1A includes a bypass air passage 18 that bypasses the second heat exchange air passage 20b of the heat exchange element 2. The bypass air passage 18 is an example of a non-heat exchange air passage, and is configured by providing a space in which the return air suction space 15RA and the exhaust outlet space 15EA communicate with each other in the air passage forming member 12 behind the heat exchange element 2.

The bypass air passage 18 is provided on the rear surface side of the exhaust air outlet space 15EA while the bypass air passage inlet 18a is formed so as to project forward from the rear surface side of the return air suction space 15RA to the inside of the return air suction space 15RA. A bypass air passage outlet 18b is formed at the opening.

The bypass air passage inlet 18a is an example of the air passage entrance, and is provided on the front side of the bypass air passage inlet forming member 18c protruding from the rear surface side of the return air suction space 15RA to the lower side of the return air suction port 10RA. The bypass air passage inlet forming member 18c is provided with an opening provided on a surface substantially perpendicular to the upper surface portion 10U of the apparatus main body 10, and the bypass air passage inlet 18a facing the front side of the apparatus main body 10 is formed by the opening. To.

The heat exchange type ventilation device 1A includes an air passage opening / closing damper 4A that opens / closes the bypass air passage 18. In the heat exchange type ventilation device 1A, an air passage opening / closing damper 4A having a configuration for opening / closing the bypass air passage inlet 18a is attached to the bypass air passage inlet 18a provided in the return air suction space 15RA.

FIG. 8 is a broken perspective view showing an example of the air passage opening / closing damper of the first embodiment, FIG. 9 is an external perspective view showing an example of the air passage opening / closing damper of the first embodiment, and FIG. It is a perspective view which shows an example of the attachment / detachment structure of the air passage opening / closing damper of 1st Embodiment. The air passage opening / closing damper 4A is an example of an air passage opening / closing unit, which includes an opening / closing plate 41 for opening / closing the bypass air passage inlet 18a and the air passage opening 40, a drive unit 42 having a motor for driving the opening / closing plate 41, and an air passage. An opening 40 is formed, and a housing 43 to which an opening / closing plate 41 and a driving unit 42 are attached is provided.

The air passage opening / closing damper 4A opens the lower part of the housing 43, and the air passage opening 40 is provided so as to face the return air suction space 15RA. Further, the opening / closing plate 41 is rotatably attached to the housing 43 with the shaft 41a as a fulcrum. The lower end of the opening / closing plate 41 has a substantially square shape and is supported by the housing 43 by the shaft 41a. The drive unit 42 rotates the opening / closing plate 41 by rotating the shaft 41a, and the opening / closing plate 41 opens the bypass air passage inlet 18a.

In the air passage opening / closing damper 4A, the shaft 41a of the opening / closing plate 41 is provided at a position along the bypass air passage inlet 18a. When the opening / closing plate 41 opens the bypass air passage inlet 18a by the rotational operation with the shaft 41a as the fulcrum, the air passage opening 40 is closed by the opening / closing plate 41. Further, by controlling the opening degree of the opening / closing plate 41, both the bypass air passage inlet 18a and the air passage opening 40 can be opened, and the air volume of the air flowing through the bypass air passage 18 and the heat exchange element 2 flow. The air volume can be controlled. Further, when the opening / closing plate 41 opens the air passage opening 40 by the rotational operation with the shaft 41a as the fulcrum, the bypass air passage inlet 18a is closed by the opening / closing plate 41.

Further, the air passage opening / closing damper 4A is provided with a flange portion 44 protruding toward the outer periphery at the upper end portion of the housing 43. The air passage opening / closing damper 4A is configured such that the housing 43 enters the return air suction port 10RA, and the flange portion 44 is configured to be larger than the return air suction port 10RA.

The air passage opening / closing damper 4A of the first embodiment is attached to the attachment portion 10A provided in the return air suction port 10RA, and is configured to be detachable from the apparatus main body 10. The mounting portion 10A is formed on the upper surface portion 10U of the apparatus main body 10 along the peripheral edge of the return air suction port 10RA. The return air suction port 10RA is provided on the upper surface portion 10U of the device main body 10, and the mounting portion 10A is provided on the outside of the attachment / detachment port 13a of the heat exchange element 2 provided on the front side of the device main body 10.

The air passage opening / closing damper 4A is configured so that an assembly in which components such as an opening / closing plate 41, a drive unit 42, and a housing 43 are assembled can be taken in and out of the return air suction space 15RA through the return air suction port 10RA. ..

The air passage opening / closing damper 4A is inserted into the return air suction space 15RA through the return air suction port 10RA, so that the flange portion 44 is placed on the mounting portion 10A of the upper surface portion 10U of the apparatus main body 10 and the position is defined. To.

In the heat exchange type ventilation device 1A, a closing plate 45 is attached to the return air suction port 10RA, and an RA duct joint 11RA, which is a duct mounting member, is attached to the closing plate 45. The closing plate 45 is an example of a holding member, and is configured to close a part of the return air suction port 10RA according to the shape of the flange portion 11RAf provided at the lower end portion of the RA duct joint 11RA and projecting toward the outer periphery.

The air passage opening / closing damper 4A has a flange portion 44 sandwiched between the closing plate 45 and the mounting portion 10A of the upper surface portion 10U of the apparatus main body 10, and the closing plate 45 is attached by a screw 45a which is a fastening member. By being fixed to 10A, it can be attached to the device main body 10.

Further, the RA duct joint 11RA is attached to the return air suction port 10RA by fixing the flange portion 11RAf of the RA duct joint 11RA to the closing plate 45 with the screw 45b.

Since the bypass air passage inlet 18a is provided on a surface substantially perpendicular to the upper surface portion 10U of the apparatus main body 10, when the air passage opening / closing damper 4A is attached to the mounting portion 10A, the housing 43 forms the bypass air passage entrance. The opening / closing plate 41 is connected to the member 18c and is provided at a position where the bypass air passage inlet 18a can be opened / closed.

As a result, the heat exchange type ventilator 1A opens and closes the opening / closing plate 41 of the air passage opening / closing damper 4A to pass the entire amount of the return air RA through the second heat exchange air passage 20b of the heat exchange element 2 and the return air passage. The air passage that allows almost the entire amount of air RA to pass through the bypass air passage 18 is switched.

Here, in the heat exchange type ventilation device 1A, the volume of the return air suction space 15RA is reduced by forming the air passage opening / closing damper 4A so as to protrude inside the return air suction space 15RA. Further, when the bypass air passage inlet 18a is opened by the opening / closing plate 41 of the air passage opening / closing damper 4A, the air passage opening 40 communicating with the return air suction space 15RA is closed by the opening / closing plate 41 and is sucked from the return air suction port 10RA. Approximately all of the air flows into the bypass air passage 18.

As a result, the air volume of the air flowing from the return air suction port 10RA to the heat exchange element 2 by closing the bypass air passage inlet 18a with the air passage opening / closing damper 4A and the bypass air passage inlet 18a by opening the bypass air passage inlet 18a with the air passage opening / closing damper 4A. The amount of air flowing from the return air suction port 10RA to the bypass air passage 18 is optimized.

Further, in the heat exchange type ventilation device 1A, the bypass air passage 18 extends to just below the outside air suction port 10OA, and the bypass air passage 18 communicates with the bypass air passage inlet forming member 18c, whereby the opening area of the air passage is reached. The decrease in air volume is suppressed and the air volume is secured. On the other hand, the outside air suction air passage 16OA communicating with the outside air suction port 10OA is displaced in the left-right direction with respect to the outside air suction port 10OA. Therefore, in order to suppress the ventilation resistance of the outside air sucked from the outside air suction port 10OA, as shown in FIG. 4, a slope portion 16a connected to the outside air suction air passage 16OA is provided directly under the outside air suction port 10OA to suck the outside air. The mouth 10OA and the outside air suction air passage 16OA are communicated with each other.

The heat exchange type ventilator 1A includes a filter 5 in the air supply air passage 17SA. In the heat exchange type ventilation device 1A, the filter 5 is detachably attached to the outside air suction air passage 16OA in which air flows from the upper part to the lower part.

<Installation example of the ventilation device of this embodiment>
FIG. 11 is a schematic configuration diagram showing an example of a building in which the heat exchange type ventilation device of the present embodiment is installed. The heat exchange type ventilation device 1A is a damper for opening and closing a lid portion 11b that is opened and closed when the filter 5 is replaced, an operation from above the device main body 10, and an air passage opening / closing damper for work in the installation room 101 provided in the building 100. It is installed in a form capable of performing predetermined maintenance in the apparatus main body 10, such as inspection and replacement of 4A, and inspection and replacement of the heat exchange element 2, the air supply fan 3SA and the exhaust fan 3EA by removing the front plate 11a.

In the heat exchange type ventilation device 1A, the OA duct 71OA is connected to the OA duct joint 11OA. The OA duct 71OA is arranged on the ceiling of the building 100 or the like, and is connected to the OA suction grill 72OA provided on the outer wall. Further, in the heat exchange type ventilation device 1A, the EA duct 71EA is connected to the EA duct joint 11EA. The EA duct 71EA is arranged on the ceiling of the building 100 or the like, and is connected to the EA outlet grill 72EA provided on the outer wall.

Further, in the heat exchange type ventilation device 1A, the SA duct 71SA is connected to the SA duct joint 11SA. The SA duct 71SA is arranged on the ceiling of the building 100 or the like, and is connected to the SA outlet grill 72SA provided on the ceiling or the like of the living room 102. Further, in the heat exchange type ventilation device 1A, the RA duct 71RA is connected to the RA duct joint 11RA. The RA duct 71RA is arranged on the ceiling of the building 100 or the like, and is connected to the RA suction grill 72RA provided on the ceiling or the like of the living room 102.

<Operation example of the heat exchange type ventilation device of this embodiment>
12 and 13 are explanatory views showing an example of the operation of the heat exchange type ventilator of the present embodiment, and then, with reference to each figure, the operation of the heat exchange type ventilator 1A of the present embodiment. An example will be described.

The heat exchange type ventilator 1A closes the bypass air passage 18 based on temperature information such as the temperature of the outside air OA, the temperature difference between the outside air OA and the return air RA, the temperature of the outside air OA, and the temperature difference between the outside air OA and the return air RA. When it is determined that the temperature is high, as shown in FIG. 12, the drive unit 42 is controlled to move the opening / closing plate 41 to the closed position, and the air passage opening / closing damper 4A opens the air passage opening 4 to bypass the bypass air passage 18. Close the air passage entrance 18a. Further, the air volumes of the supply air fan 3SA and the exhaust fan 3EA are controlled so as to have normal supply air volume and exhaust air volume.

In the heat exchange type ventilator 1A, when the air supply fan 3SA is driven, an air flow is generated through the air supply air passage 17SA, and the outside air OA is sucked from the OA suction grill 72OA. The outside air OA sucked from the OA suction grill 72OA passes through the OA duct 71OA and is sucked into the apparatus main body 10 from the outside air suction port 10OA.

The outside air OA sucked into the apparatus main body 10 from the outside air suction port 10OA passes through the filter 5 from the outside air suction air passage 16OA, and is introduced into the outside air suction port 21OA of the heat exchange element 2 from the outside air suction space 15OA.

The outside air OA introduced into the heat exchange element 2 from the outside air suction port 21OA passes through the first heat exchange air passage 20a of the heat exchange element 2 and passes through the supply air outlet space 15SA from the supply air outlet 21SA of the heat exchange element 2. As it is, it is sucked into the fan suction port 31a of the air supply fan 3SA.

The air sucked into the air supply fan 3SA is blown out from the fan outlet 31b of the air supply fan 3SA, and the air blown out from the air supply fan 3SA is discharged from the supply air outlet 10SA to the outside of the device main body 10 as an air supply SA. Blow out. Then, the supply air SA blown out from the supply air outlet 10SA passes through the SA duct 71SA and is blown out from the SA blowout grill 72SA to the living room 102.

On the other hand, in the heat exchange type ventilation device 1A, when the exhaust fan 3EA is driven, an air flow through the exhaust air passage 17EA is generated, and the return air RA, which is the air in the living room 102, is sucked from the RA suction grill 72RA. The return air RA sucked from the RA suction grill 72RA passes through the RA duct 71RA and is sucked into the apparatus main body 10 from the return air suction port 10RA.

The return air RA sucked into the apparatus main body 10 from the return air suction port 10RA is introduced from the return air suction space 15RA to the return air suction port 21RA of the heat exchange element 2. The return air RA introduced into the heat exchange element 2 from the return air suction port 21RA passes through the second heat exchange air passage 20b of the heat exchange element 2 and passes through the exhaust outlet space 15EA from the exhaust outlet 21EA of the heat exchange element 2. As it is, it is sucked into the fan suction port 31a of the exhaust fan 3EA.

The air sucked into the exhaust fan 3EA is blown out from the fan outlet 31b of the exhaust fan 3EA, and the air blown out from the exhaust fan 3EA passes through the exhaust outlet air passage 16EA and is used as an exhaust EA from the exhaust outlet 10EA. 10 It is blown out. Then, the exhaust EA blown out from the exhaust outlet 10EA passes through the EA duct 71EA and is blown out from the EA blowing grill 72EA to the outside.

In the heat exchange type ventilator 1A, in the heat exchange element 2, heat is exchanged between the outside air OA and the return air RA, so that the supply air SA brought close to room temperature is blown into the room and the temperature is adjusted. Fresh air (outside air OA) is supplied to the room. In addition, the dirty air in the room is exhausted to the outside, and ventilation is performed while suppressing fluctuations in room temperature.

In the air passage opening / closing damper 4A, the shaft 41a of the opening / closing plate 41 is provided at a position along the bypass air passage inlet 18a, so that the return air suction port 10RA is in a state where the opening / closing plate 41 opens the air passage opening 40. The amount of the opening / closing plate 41 protruding into the air passage communicating with the return air suction space 15RA is suppressed. As a result, the ventilation resistance of the air sucked from the return air suction port 10RA and sent to the heat exchange element 2 is suppressed.

By the way, in spring and autumn, the temperature difference between the outside and the room is generally small, and even if heat exchange is performed between the outside air OA and the return air RA, the outside air OA before the heat exchange and the air supply SA after the heat exchange are performed. There may be little temperature change between and. Further, in the summer, when the temperature of the outside air is lower than the temperature of the indoor air, when heat exchange is performed between the outside air OA and the return air RA, the outside air OA is warmed by the return air RA and the temperature of the supply air SA. May rise and the room may feel warm.

Therefore, based on temperature information such as the temperature of the outside air OA, the temperature difference between the outside air OA and the return air RA, the temperature of the outside air OA, and the temperature difference between the outside air OA and the return air RA, the temperature corresponding to spring or autumn, or in the summer. When the temperature of the outside air OA and the return air RA has a predetermined relationship and is the temperature at which the bypass air passage 18 is opened, the drive unit 42 is controlled by the opening / closing plate 41 as shown in FIG. With the air passage opening 40 closed, the bypass air passage inlet 18a of the bypass air passage 18 is opened by the air passage opening / closing damper 4A.

In the heat exchange type ventilator 1A, when the air passage opening / closing damper 4A is opened, substantially the entire amount of the return air RA passing through the exhaust air passage 17EA bypasses the heat exchange element 2 and passes through the bypass air passage 18. The heat exchange element 2 has a narrow air passage and a large ventilation resistance. Therefore, the ventilation resistance can be reduced by passing substantially the entire amount of the return air RA through the bypass air passage 18 and bypassing the heat exchange element 2.

Further, in winter when the outside air OA is below freezing point, heat exchange is performed between the high humidity return air RA and the low temperature outside air OA, and when the temperature of the return air RA is lowered, the heat exchange element 2 The exhaust outlet 21EA, which is the outlet of the return air RA in the above, may freeze. Further, when the temperature of the outside air is warmer than the temperature of the indoor air, when heat exchange is performed between the outside air OA and the return air RA, the outside air OA is cooled by the return air RA and the temperature of the supply air SA drops. The room may feel cold.

Therefore, based on the temperature information such as the temperature of the outside air OA, the temperature difference between the outside air OA and the return air RA, the temperature of the outside air OA, and the temperature difference between the outside air OA and the return air RA, the temperature corresponds to the winter season and is a bypass air passage. At the temperature at which 18 is opened, the air passage opening / closing damper 4A is opened, and substantially the entire amount of the return air RA is passed through the bypass air passage 18 to bypass the heat exchange element 2.

As a result, the return air RA that has not been heat-exchanged and whose temperature has not been lowered is blown out into the exhaust air outlet space 15EA, the exhaust air outlet 21EA of the heat exchange element 2 can be warmed, and the exhaust air outlet 21EA is prevented from freezing. can do. By controlling the opening degree of the air passage opening / closing damper 4A, it is possible to pass a predetermined amount of air through both the heat exchange element 2 and the bypass air passage 18.

<Example of action and effect of air passage opening / closing damper>
Next, an operation of attaching / detaching the air passage opening / closing damper 4A to / from the apparatus main body 10 will be described. When removing the air passage opening / closing damper 4A from the device main body 10, by removing the screw 45a by operating from above the device main body 10, the closing plate 45 is attached to the upper surface portion 10U of the device main body 10 with the RA duct joint 11RA attached. Is removed from. Then, the air passage opening / closing damper 4A is taken out from the return air suction port 10R to the outside of the return air suction space 15RA. As a result, the air passage opening / closing damper 4A is removed from the upper surface portion 10U of the apparatus main body 10 to the outside of the return air suction space 15RA through the return air suction port 10R.

When the air passage opening / closing damper 4A is attached to the apparatus main body 10, the air passage opening / closing damper 4A is inserted into the return air suction space 15RA from the return air suction port 10R. In the air passage opening / closing damper 4A, the flange portion 44 is sandwiched between the closing plate 45 and the mounting portion 10A of the upper surface portion 10U of the apparatus main body 10, and the closing plate 45 is fixed to the mounting portion 10A with screws 45a. As a result, the air passage opening / closing damper 4A is attached to the inside of the return air suction space 15RA from the upper surface portion 10U of the apparatus main body 10 through the return air suction port 10R.

As shown in FIG. 11, the heat exchange type ventilation device 1A is installed in the installation room 101 provided in the building 100, and is suitable for maintenance and inspection work inside the device main body 10 on the left and right sides of the device main body 10. No space is formed. Therefore, by removing the front plate 11a on the front side of the apparatus main body 10, it is possible to perform maintenance and inspection work inside the apparatus main body 10.

On the other hand, a space is provided on the upper side of the apparatus main body 10 for connecting the RA duct 71RA and the like. Therefore, the air passage opening / closing damper 4A can be taken in and out of the return air suction space 15RA from the upper surface portion 10U of the apparatus main body 10 through the return air suction port 10R, and can be detachably attached to the return air suction port 10R. ..

As a result, the air passage opening / closing damper 4A can be attached / detached by operating from above the apparatus main body 10 by utilizing the space provided above the apparatus main body 10, and heat exchange can be performed without removing the front plate 11a. The air passage opening / closing damper 4A can be attached / detached without removing the element 2 from the apparatus main body 10. Therefore, maintenance and inspection of the air passage opening / closing damper 4A can be easily performed.

Further, since the flange portion 44 of the air passage opening / closing damper 4A is fixed so as to be sandwiched between the closing plate 45 and the mounting portion 10A of the upper surface portion 10U of the apparatus main body 10, the flange portion 44 sucks the return air. It is pressed against the mounting portion 10A on the peripheral edge of the mouth 10RA. As a result, the air passage opening / closing damper 4A can be positioned, and the airtightness at the attachment point of the air passage opening / closing damper 4A can be maintained.

Further, by mounting the RA duct joint 11RA on the closing plate 45, it is not necessary to match the shape of the flange portion 11RAf of the RA duct joint 11RA with the shape of the flange portion 44 and the mounting portion 10A of the air passage opening / closing damper 4A. .. As a result, a general-purpose duct joint can be used as the RA duct joint 11RA.

FIG. 14 is a perspective view showing a modified example of the attachment / detachment structure of the air passage opening / closing damper according to the first embodiment. The air passage opening / closing damper 4A is attached to the attachment portion 10A provided in the return air suction port 10RA, and is configured to be detachable from the apparatus main body 10. The mounting portion 10A is formed on the upper surface portion 10U of the device main body 10 along the peripheral edge of the return air suction port 10RA, and is provided on the outside of the attachment / detachment port 13a of the heat exchange element 2 provided on the front side of the device main body 10.

The RA duct joint 11RAb is an example of a duct mounting member, and has a flange portion 11RAfb protruding toward the outer periphery at the lower end portion. The flange portion 11RAfb is an example of a pressing member, and is configured to have a shape that closes a part of the return air suction port 10RA according to the shape of the mounting portion 10A.

The air passage opening / closing damper 4A has a flange portion 11RAfb of the RA duct joint 11RAb in a form in which the flange portion 44 is sandwiched between the flange portion 11RAfb of the RA duct joint 11RAb and the mounting portion 10A of the upper surface portion 10U of the apparatus main body 10. It is attached to the apparatus main body 10 by being fixed to the attachment portion 10A with a screw (not shown).

As a result, the RA duct joint 11RAb can be attached / detached without using a closing plate, and the space provided above the apparatus main body 10 can be used to attach / detach the air passage opening / closing damper 4A by operating from above the apparatus main body 10. Is. Therefore, the air passage opening / closing damper 4A can be attached / detached without removing the front plate 11a and the heat exchange element 2 from the apparatus main body 10, and the maintenance / inspection of the air passage opening / closing damper 4A can be easily performed.

FIG. 15 is a perspective view showing an example of the attachment / detachment structure of the air passage opening / closing damper according to the second embodiment. The apparatus main body 10 is provided with a mounting portion 10B of the air passage opening / closing damper 4B on the upper side of the attachment / detachment port 13a of the heat exchange element 2. The mounting portion 10B is configured by providing an opening connected to the return air suction space 15RA shown in FIG. 2 or the like on the outside of the attachment / detachment port 13a and on the front side of the apparatus main body 10.

The air passage opening / closing damper 4B is an example of the air passage opening / closing part, and can be taken in and out of the return air suction space 15RA through the mounting part 10B. Attached to.

As a result, the air passage opening / closing damper 4B can be attached / detached by removing the front plate 11a and operating from the front of the apparatus main body 10, and the air passage opening / closing damper 4B can be attached / detached without removing the heat exchange element 2 from the apparatus main body 10. Is possible. Therefore, maintenance and inspection of the air passage opening / closing damper 4B can be easily performed.

1A ... Heat exchange type ventilation device, 10 ... Device body, 10A, 10B ... Mounting part, 10U ... Top surface part, 10OA ... Outside air suction port, 10SA ... Air supply outlet, 10RA ... Return air suction port (ventilation port), 10EA ... Exhaust outlet, 11 ... Housing, 11a ... Front plate, 11OA ... OA duct joint, 11SA ... SA duct joint , 11RA ... RA duct joint (duct mounting member), 11RAf ... flange part, 11RAb ... RA duct joint (duct mounting member), 11RAfb ... flange part, 11EA ... EA duct joint, 12 ... Air duct forming member, 13 ... Heat exchange element mounting part, 13a ... Detachable port, 14SA ... Air supply fan mounting part, 14EA ... Exhaust fan mounting part, 15OA ... Outside air suction Space, 15SA ... Supply air outlet space, 15RA ... Return air suction space, 15EA ... Exhaust air outlet space, 16OA ... Outside air suction air duct, 16a ... Slope, 16EA ... Exhaust air outlet Air duct, 17SA ... Air supply air duct, 17EA ... Exhaust air passage, 18 ... Bypass air passage (non-heat exchange air passage), 18a ... Bypass air passage inlet (air passage inlet), 18b. ... Bypass air passage outlet, 18c ... Bypass air passage inlet forming member, 2 ... Heat exchange element, 20a ... First heat exchange air passage, 20b ... Second heat exchange air passage ( Heat exchange air duct), 21OA ... outside air suction port, 21SA ... supply air outlet, 21RA ... return air suction port, 21EA ... exhaust outlet, 3SA ... air supply fan, 3EA ...・ ・ Exhaust fan, 30 ・ ・ ・ impeller, 30M ・ ・ ・ motor, 31 ・ ・ ・ fan case, 31a ・ ・ ・ fan suction port, 31b ・ ・ ・ fan outlet, 4A, 4B ・ ・ ・ air passage opening / closing Damper (air passage opening / closing part), 40 ... air passage opening, 41 ... opening / closing plate, 41a ... shaft, 42 ... drive part, 43 ... housing, 44 ... flange part , 45 ... Closing plate (holding member), 45a ... screw, 45b ... screw, 46 ... holding member

Claims (5)

A heat exchange element that exchanges heat between the outside air sucked from the outside and the return air sucked from the room,
The main body of the device to which the heat exchange element is attached and
An attachment / detachment port into which the heat exchange element is inserted / removed from the device body,
The ventilation port provided on the upper surface of the main body of the device and
The heat exchange air passage through which the air passing through the ventilation port passes through the heat exchange element, and
A non-heat exchange air passage in which air passing through the ventilation port does not pass through the heat exchange element and bypasses the heat exchange element.
An air passage opening / closing part that opens / closes the non-heat exchange air passage, and
A mounting portion provided on the outside of the attachment / detachment port and to which the air passage opening / closing portion is attached / detached to / from the device main body is provided .
The mounting portion is provided at the ventilation port, and the air passage opening / closing portion is attached to and detached from the upper surface of the apparatus main body.
Ventilation system. The ventilation device according to claim 1, further comprising a holding member attached to the ventilation port, the air passage opening / closing portion being fixed to the ventilation port by the holding member . The ventilation device according to claim 1, further comprising a duct mounting member attached to the ventilation port, and the air passage opening / closing portion is fixed to the ventilation port by the duct mounting member . The air passage opening / closing portion includes an opening / closing plate for opening / closing the air passage, a housing to which the opening / closing plate is attached, and a flange portion protruding to the outside of the housing.
The ventilation device according to any one of claims 1 to 3, wherein the flange portion is pressed against the mounting portion . An air passage entrance connected to the non-heat exchange air passage is provided below the ventilation port.
The ventilation device according to claim 4 , wherein the opening / closing plate opens / closes the air passage inlet by a rotational operation with the shaft as a fulcrum, and the shaft is provided at a position along the air passage entrance .

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