JPH0689919B2 - Ventilator with heat exchanger - Google Patents

Description

The present invention relates to a ventilation device with a heat exchanger having a bypass passage, and more particularly to a damper for opening and closing the bypass passage.

[Conventional technology]

FIG. 6 is a plan view showing a conventional ventilation device with a heat exchanger disclosed in, for example, Japanese Utility Model Laid-Open No. 61-197429, in which (1) is a suction port (2) (3) and an outlet ( 4) (5) is a box body provided with one set each on the indoor side and the outdoor side,
(6) and (7) are exhaust passages extending from the indoor-side intake port (2) provided in the box body so as to intersect between the intake port and the outlet port to the outdoor-side outlet port (5). And an air supply passage extending from the outdoor suction port (3) to the indoor outlet (4), (8) is a radiant blower for forming an exhaust flow provided in the exhaust passage (6), (9) ) Is a radiant blower for forming a supply air flow provided in the air supply passage (7), and (10) is provided at the intersection and is detachably attached to the box body, for example, Japanese Patent Publication No. No. 47-19990, a heat exchanger for exchanging temperature and humidity between the air supply flow and the exhaust air flow, (11) is the blower (8)
(9) Blade casing, (12) is the suction port (2)
(3) and the connecting member for the air supply and exhaust ducts provided at the outlets (4) and (5), and (13) the exhaust passage (6)
A bypass passage that is installed in parallel with and bypasses the heat exchanger (10),
Reference numeral (14) is a damper that switches between the bypass passage and the exhaust passage (6), and is connected to a drive unit (16) including a geared motor or the like via a connecting tool (15).

The conventional ventilation device with a heat exchanger is configured as described above, and by operating the exhaust blower (8) and the air supply blower (9), indoor air is supplied from the indoor suction port (2) to the box ( 1)
It is sucked in, passes through the heat exchanger (10) in the exhaust passage (6), is blown out from the outdoor air outlet (5), and is discharged to the outside of the room. The outdoor air is sucked into the box (1) through the outdoor suction port (3), passes through the heat exchanger (10) in the air supply passageway (7), and is blown out from the indoor side outlet (4) into the room. Be supplied with air. At this time, heat exchange is performed in the heat exchanger (10) between the exhaust flow and the supply air flow, and the exhaust heat is recovered to reduce the heating and cooling load. On the other hand, in the intermediate period when the heat exchanger (10) is not needed, such as in spring and autumn, the drive machine (16) is driven to rotate the damper (14) to open the bypass passage (13) and heat exchange. The exhaust passage (6) to the container (10) is closed. As a result, the exhaust flow is exhausted through the bypass passage (13), and since the air passage resistance is small, a large amount of air can be obtained.

[Problems to be solved by the invention]

In the conventional ventilation device with a heat exchanger as described above, the exhaust passage (6) and the bypass passage (13) are provided by the single damper (14).
Since the pressure is changed by the damper (14), the damper (14) receives pressure from the damper (14).
The force for rotating 4) is increased, and the drive machine (16)
There was a problem that it had to be increased.

The present invention has been made to solve the above problems, and an object thereof is to obtain a ventilator with a heat exchanger, which requires only a small force for rotating a damper and can reduce a driving machine. It is a thing.

[Means for solving problems]

In the present invention, a box body provided with one set each of the suction port and the blowout port on the indoor side and the outdoor side, and the above-mentioned box provided inside the box body so as to intersect between the suction port and the blowout port An air supply passage and an exhaust passage from the indoor side to the outdoor side,
Blowers forming a supply air flow and an exhaust flow in the supply air passage and the exhaust passage, respectively, and heat exchange between the supply air flow and the exhaust flow provided at the intersection of the supply air passage and the exhaust passage. A heat exchanger to do, branching upstream of the heat exchanger in the exhaust passage, bypassing the heat exchanger, and a bypass passage having an inlet smaller than the inlet to the heat exchanger side of the exhaust passage, An opening / closing opening and closing of the bypass passage, an axially elongated bypass damper having a rotating shaft at an end portion on the inlet side to the heat exchanger side, and an inlet and a chamber of the exhaust passage to the heat exchanger side. The exhaust passage damper is provided between the suction port and the inner suction port, has a rotation shaft in a substantially central portion, is rotated by a driving machine, and has an exhaust passage damper larger than the bypass damper. Above the indoor suction port side when A side without the shaft in the closed state of the bypass damper connected by the interlocking link, characterized by being configured to allow interlocking the exhaust passage damper and the bypass damper.

[Action]

In the present invention, since the exhaust passage damper is pivotally supported substantially in the center thereof, when changing the mode from the heat exchange operation to the normal ventilation operation (or vice versa), the wind pressure received on the left and right of the shaft is balanced. At the same time, the bypass damper is smaller than the exhaust passage damper, and the inlet of the bypass damper that opens and closes is smaller than the inlet to the heat exchanger and is elongated in the axial direction. It is possible to reduce the rotational moment of, and the driving force required by the driving machine can be reduced accordingly.

〔Example〕

1 to 5 are views showing an embodiment of the present invention, FIG. 1 is a perspective view with a lid removed, FIG. 2 is a plan view showing the flow of wind, and FIG. 3 is a view of FIG. FIG. 4 is a side view, FIG. 4 is a perspective view showing a state where the bypass passage is used, and FIG. 5 is a plan view showing the wind flow in FIG. In the figure, (1) to (1
3), (15) and (16) show the same or corresponding parts as in the above conventional example, each room is provided in the box (1) by a partition plate (31), and (21) is a heat exchanger ( The heat exchanger chamber in which four chambers (17), (18), (19) and (20) are formed by inserting (10), the (22) is opened in the chamber (17) and the partition plate (31) ( 23) is provided to connect the rotating shaft to the heat exchanger (10)
In the exhaust blower chamber in which a radiant flow type exhaust blower (8) arranged so as to be orthogonal to the insertion / removal direction of the blade is installed, an outdoor-side outlet (5) is provided at the end of the blade casing (11). Has been. (24) is an opening (25) in the chamber (18) and the partition plate (31)
In a supply air blower chamber in which a radiant air supply blower (9) is installed, in which a rotating shaft communicated with the heat exchanger (10) is arranged orthogonal to the insertion / removal direction of the heat exchanger (10), Casing (1
An indoor air outlet (4) is provided at the end of 1). (2
6) is an outdoor suction chamber provided at a lower portion and a side portion of the exhaust blower chamber (22), which is communicated with the chamber (19) by providing an opening (not shown) in a partition plate, and an outdoor suction chamber is provided at a side wall. Mouth (3)
Is provided. (27) is the above chamber (20) and partition (3
The air blower room (2
An outdoor side suction passage provided in the lower part of 4), (29) is an indoor side suction chamber communicated with this outdoor side suction passage by providing an opening (30), and an indoor side suction port (2) is provided on a side wall. Has been. The bypass passage (13) is provided at a side portion of the heat exchanger chamber (21), the partition plate (31) is provided with openings (32) and (33), and the exhaust blower chamber (22) is provided through the chamber (17). ) And the indoor suction chamber (29) are communicated with each other, and the opening (33) is formed to be long in the height direction of the box body (1) together with the indoor suction chamber (29). Reference numeral (34) is an exhaust passage damper provided in the indoor suction chamber (29), which is provided with a rotary shaft (35) at a substantially central portion so as to open and close the opening (30) and is provided with a connecting member (15). It is connected to the drive machine (16) via the. Reference numeral (36) is a vertically long bypass damper which is provided in the indoor suction chamber (29) and has a rotary shaft (35) at its end for opening and closing the opening (33). The free end of (34) and the free end of this bypass damper are connected by an interlocking link (37). Reference numeral (38) is an elastic body which is provided in the exhaust passage damper (34) and biases the opening (30) in the opening direction. The indoor suction port (2) and the outdoor air outlet (5) are provided on the side wall of the box body (1) in a direction orthogonal to the insertion / removal direction of the heat exchanger (10). The outdoor suction port (3) and the indoor air outlet (4) are provided on the opposing side walls. Further, as described above, the exhaust blower (8)
Also, the electric motor rotating shaft of the air supply blower (9) is provided so as to be orthogonal to the insertion / removal direction of the heat exchanger (10) with respect to the box body (1). Is discharged so as to be parallel to the insertion / removal direction of the heat exchanger (10) and then bent at a right angle so as to blow out from the indoor side outlet (4) and the outdoor side outlet (5).

The ventilation device with a heat exchanger configured as described above has a drive unit (16) for air conditioning ventilation using the heat exchanger (10).
And the exhaust passage damper (34) by the elastic body (38)
By rotating the fan to open the opening (30), the interlocking link (37) rotates the bypass damper (36) to close the opening (33), and operate the blowers (8) and (9) respectively. , Room air is sucked into the outdoor suction chamber (29) from the indoor suction port (2) through the duct, and the opening (30) → indoor suction passage (27) → chamber (20) → heat exchanger (10 ) → chamber (17) → opening (23) → passes through the exhaust passage (6) leading to the exhaust blower chamber (22) and is blown from the indoor blower outlet (5) by the exhaust blower (8) through the duct. It is discharged outdoors. The outdoor air is sucked into the outdoor suction chamber (26) through the duct from the outdoor suction port (3), and the outdoor air is sucked into the chamber (19).
→ Heat exchanger (10) → Room (18) → Opening (25) → Passing through the air supply passage (7) leading to the air supply blower room (24), the air blower (9) for indoor side outlet ( It is blown out from 4) and is supplied to the room through the duct. At this time, in the heat exchanger (10), heat exchange is performed between the exhaust flow and the supply air flow, and the exhaust heat is recovered to reduce the heating and cooling load. On the other hand, during the interim period such as spring and autumn when air conditioning is not required, the drive unit (16) is operated to rotate the exhaust passage damper (34) as shown in FIGS. The bypass damper (36) is rotated by (37) to open (30) the exhaust passage damper (36).
The air is supplied in the same manner as the above-mentioned air-conditioning ventilation by superposing and closing the air, and opening the opening (33) and operating the blowers (8) and (9), but the indoor air is ducted. Is sucked into the indoor suction chamber (29) from the indoor suction port (2) via the opening (33) → bypass passage (31) → opening (32) → chamber (17) → opening (23) → exhaust After passing through a bypass ventilation path leading to the blower chamber (22), the exhaust blower (8) blows the air from the outdoor outlet (5) and discharges it to the outside through the duct. In this way, since the exhaust flow does not pass through the heat exchanger (10), the resistance in the ventilation passage is reduced, sufficient normal ventilation is performed, and the exhaust passage damper (34) is connected via the interlocking link (37). By allowing the bypass damper (36) to rotate by means of it and by forming the bypass damper (36) in a vertically long shape, the rotation torque of the damper can be small and the drive machine (16) can be made small. it can.

That is, when the bypass passage (31) is opened and the exhaust passage (6) side is closed, the exhaust passage damper (34) is acted on by the air flow that interferes with the rotation and the air flow that assists the rotation, so that the exhaust passage damper (34) is in a balanced state. Therefore, it can be closed with a relatively small force. Also, since the bypass damper (36) has a small plane area and is elongated in the axial direction, the rotational moment becomes sufficiently small,
The action of the air flow that hinders the opening motion is reduced, and the cooperation of both sides closes the exhaust passage (6) side, so that the exhaust passage damper (34) itself has a small plane area and is output to the drive unit (16). Can be small.

Further, when the state shown in FIG. 5 is changed to the state shown in FIG. 2, the wind pressure affects both dampers, but the exhaust passage damper (34) is the same as described above, that is, in the upper part of FIG. The wind that assists the rotation hits the right side of the rotation shaft (35) of the exhaust passage damper (34), and the wind that hinders the rotation hits the left side of the exhaust passage damper (34), which cancels each other out and is more sufficient than when only the disturbing wind is received. Moreover, the power of the driving machine can be saved. At the same time, since the bypass damper (36) originally has a small rotational moment and is elongated in the axial direction, the influence of wind is extremely small. In addition, bypass damper (3
Since 6) is a door type, the degree of sealing of the opening (33) is high, and there is no leakage from the bypass passage (13). Although the heat exchanger (10) becomes dirty and needs to be cleaned by performing the air conditioning ventilation or the normal ventilation as described above, the cover (39) provided on the box body (1) is removed and the heat exchanger (10) is removed. ) Can be cleaned by a vacuum cleaner or the like, and the insertion and removal of the heat exchanger (10) are orthogonal to the forming directions of the suction ports (2) (3) and the air outlets (4) (5). Therefore, the piping for air supply and exhaust does not interfere. Further, since the rotating shafts of the exhaust blower (8) and the air supply blower (9) are provided orthogonally to the insertion / removal direction of the heat exchanger (10), the vane casing (11) having a large size. Will be arranged in parallel with the heat exchanger (10),
The depth of the box (1) is reduced. The width dimension is determined by the dimensions of the heat exchanger (10).

〔The invention's effect〕

In the present invention, since the exhaust passage damper is pivotally supported substantially in the center thereof, when changing the mode from the heat exchange operation to the normal ventilation operation (or vice versa), the wind pressure received on the left and right of the shaft is balanced. At the same time, the bypass damper is smaller than the exhaust passage damper, and the inlet of the bypass damper that opens and closes is smaller than the inlet to the heat exchanger and is elongated in the axial direction. It is possible to reduce the rotational moment of, and to reduce the required driving force of the driving machine by that amount, and it is possible to reduce the size of the driving machine.

[Brief description of drawings]

1 is a perspective view showing the embodiment of the present invention with a lid removed, FIG. 2 is a plan view showing the same wind flow, FIG. 3 is a side view of FIG. 2, and FIG. Is a perspective view showing a state where the bypass passage (13) is used, FIG. 5 is a plan view showing the flow of air in FIG. 4, and FIG. 6 is a plan view showing a conventional ventilation device with a heat exchanger. In the drawings, the same reference numerals indicate the same or corresponding parts,
(1) is a box, (2) is an indoor-side inlet, (3) is an outdoor-side inlet, (4) is an indoor-side outlet, (5) is an outdoor-side outlet, (6) is an exhaust passage, (7) air supply passage, (8) exhaust air blower, (9) air supply air blower, (10) heat exchanger, (13) bypass passage, (15) connector, (16) Is a drive machine, (34) is an exhaust passage damper, (36) is a bypass damper, and (37) is an interlocking link.

Claims (1)

[Claims] 1. A box body provided with a set of a suction port and a blow port respectively on the indoor side and the outdoor side, and provided in the box body so as to intersect between the suction port and the blow port. An air supply passage and an exhaust passage extending from the indoor side to the outdoor side, a blower that forms a supply air flow and an exhaust flow in the air supply passage and the exhaust passage, respectively, and an intersection of the air supply passage and the exhaust passage. A heat exchanger provided in a section for exchanging heat between the air supply flow and the exhaust flow, and a branch in the exhaust passage upstream of the heat exchanger to bypass the heat exchanger and an inlet having an exhaust passage. Of the bypass passage, which is smaller than the inlet to the heat exchanger side, and the opening and closing of the inlet of the bypass passage, and the opening and closing of the bypass passage having a rotating shaft at the inlet side end to the heat exchanger side. Bypass damper, inlet to heat exchanger side of the exhaust passage and indoor side An exhaust passage damper, which is provided between the exhaust passage damper and the inlet, has a rotation shaft in a substantially central portion, is rotated by a driving machine, and is larger than the bypass damper. A heat characterized in that the exhaust passage damper and the bypass damper are configured to be interlockable by connecting the indoor suction port side at a certain time and the shaftless side of the bypass damper in a closed state by an interlocking link. Ventilator with exchanger.