JPH0557494B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a ventilation system with a heat exchanger, and particularly to the arrangement of an inlet, an outlet, and a blower provided indoors and outdoors.

[Prior Art] FIG. 8 is an exploded perspective view showing a conventional ventilation system with a heat exchanger, as disclosed in, for example, Japanese Utility Model Application Publication No. 60-167954. It is a box body with suction ports 4, 5 and blow-off ports 6, 7, one set each on the indoor side and the outdoor side. Reference numerals 8 and 9 refer to an exhaust passage extending from the indoor side suction port 4 to the outdoor side blowout port 7 and from the outdoor side suction port 5, which are provided in the box body so as to intersect between the above-mentioned suction port and the above-mentioned blowout port. An air supply passage leading to the indoor air outlet 6, 10 a radial blower for forming an exhaust flow provided in this exhaust passage 8, 11
Reference numeral 12 is a radial blower provided in the air supply passage 9 and forms a supply air flow, and 12 is a fan provided at the intersection and removably inserted into the box body. 13 is a blade casing of the blower 10, 11, and 14 is a heat exchanger for exchanging temperature and humidity between the supply air flow and the exhaust air flow. The cover is provided on the same side wall as the side wall on which the inlet and the outlet are provided. Reference numeral 15 denotes a connection member between the air supply and exhaust ducts provided at the suction ports 4 and 5 and the air outlet ports 6 and 7.

The conventional ventilation system with a heat exchanger is configured as described above, and by operating the exhaust blower 10 and the supply air blower 11, indoor air is drawn from the indoor air intake port 4 into the box body 1 as shown by arrow A. It passes through the heat exchanger 12 in the exhaust passage 8 as shown by arrow B to arrow C, and is blown out from the outdoor air outlet 7 as shown by arrow D and is discharged outdoors. On the other hand, outdoor air is sucked into the box 1 from the outdoor suction port 5 as shown by the arrow H, passes through the heat exchanger 12 in the air supply passage 9 as shown by the arrow, and then from the indoor air outlet 6 as shown by the arrow H. Air is blown out and supplied into the room. At this time, heat exchanger 1
In 2, heat exchange takes place between the exhaust air flow and the supply air flow,
Recovers exhaust heat to reduce heating and cooling loads. As the heat exchanger 12 is operated in this way, it becomes dirty, but it can be cleaned by using the cover 14 provided on the box body 1.
This is done by removing the heat exchanger 12, pulling it out, and using a vacuum cleaner or the like.

[Problem to be solved by the invention] In the conventional ventilation system with a heat exchanger as described above,
Since the opening for inserting and removing the heat exchanger 12 is provided in the same side wall of the box body 1 where the suction port and the blowout port are formed, and between the suction port and the blowout port, the heat exchanger 12, there was a problem in that the air supply/exhaust duct (not shown) connected to the connection member 15 of the suction inlet and the outlet became an obstacle, making it difficult to perform the insertion/removal work.

This invention was made to solve the above problems, and includes a heat exchanger that allows easy insertion and removal of the heat exchanger, and reduces the depth of the box without reducing air blowing performance. The purpose is to obtain ventilation equipment.

[Means for Solving the Problems] A ventilation device with a heat exchanger according to the present invention has an indoor suction port and an air outlet on one side of opposing side walls, and an outdoor suction port and an air outlet on the other side. an air supply passage and an exhaust passage that communicate between the indoor side and the outdoor side, which are provided in the box body so as to intersect between the suction port and the air outlet; and the air supply passage and the exhaust passage. It is equipped with a centrifugal fan provided in each passage to form a supply air flow or an exhaust flow, and a heat exchanger that is removably installed at the intersection and exchanges heat between the supply air flow and the exhaust flow. The opposite side walls of the box provided with the air outlet are parallel to the insertion/removal direction of the heat exchanger, and the rotating shaft of at least one of the centrifugal fans forming supply air flow or exhaust air flow is connected to the heat exchanger. The direction of insertion and removal of the centrifugal fan is perpendicular to the insertion/removal direction of the centrifugal fan, and the direction of the air from the centrifugal fan is orthogonal to the direction of air from the air outlet communicating with the centrifugal fan.

[Function] In this invention, since the side wall of the box in which the suction port and the blowout port are provided is perpendicular to the insertion/removal direction of the heat exchanger, the duct connected to the suction port and the blowout port is connected to the heat exchanger. If it gets in the way when inserting or removing the In addition, since the blowing direction of the air from the centrifugal fan and the blowing direction from the air outlet communicating with the centrifugal fan are perpendicular to each other, the air blowing from the centrifugal fan changes its direction approximately at right angles in front of the air outlet. Since the pressure of the blowing air is equalized, the dynamic pressure loss of the blowing air is reduced, and the rotational axis direction of the centrifugal fan and the blowing direction of the air outlet become parallel, so the external dimensions of the box can be reduced. can.

[Example] Figures 1 to 5 are diagrams showing an embodiment of the present invention, Figure 1 is a perspective view with the lid removed, Figure 2 is a plan view showing the flow of wind, and Figure 3 is a diagram showing an example of the present invention. FIG. 2 is a side view, FIG. 4 is a perspective view showing a state in which a bypass passage is used, and FIG. 5 is a plan view showing the flow of wind in FIG. 4. In the figure, numerals 1 to 15 indicate the same or equivalent parts as in the conventional example described above, each chamber is provided in the box 1 by a partition plate 16, and 21 is a four chamber 17, which is formed by inserting a heat exchanger 12. 1
The heat exchanger chamber 22 in which the heat exchanger chambers 8, 19, and 20 are formed has an opening 23 in the partition plate 16 and a rotating shaft that communicates with the chamber 17 and is arranged so as to be orthogonal to the insertion/removal direction of the heat exchanger 12. An outdoor air outlet 7 is provided at the end of the blade casing 13 in an exhaust air blower room in which the air exhaust air blower 10 is installed. Reference numeral 24 denotes an air supply blower in which an air supply blower 11 is installed, the rotary shaft of which is communicated with the chamber 18 through an opening 25 in the partition plate 16, and which is disposed perpendicular to the insertion/removal direction of the heat exchanger 12. In the room, an indoor air outlet 6 is provided at the end of the blade casing 13. 26 is the above room 19
An outdoor suction chamber is provided in the lower part and side member of the exhaust blower chamber 22, which communicates with the exhaust fan chamber 22 through an opening (not shown) in the partition plate, and an outdoor suction port 5 is provided in the side wall. 27 communicates with the chamber 20 by providing an opening 28 in the partition plate 16 and communicating with the air supply blower chamber 24.
An indoor suction passage 29 provided at the lower part of the indoor suction passage 29 is an indoor suction chamber that communicates with the indoor suction passage through an opening 30, and an indoor suction port 4 is provided on the side wall. 31 is a bypass passage provided on the side of the heat exchanger chamber 21, and the partition plate 16 has openings 32,
33 is provided so that the exhaust blower chamber 22 and the indoor suction chamber 29 communicate with each other via the chamber 17. Reference numeral 34 denotes a damper provided in the indoor suction chamber 29, which is rotatable so as to open one of the openings 30 and 33 and close the other, and is rotated by an electromagnet or an electric motor. . The indoor side suction port 4 and the outdoor side outlet 7 are provided on the side wall of the box 1 in a direction perpendicular to the insertion/removal direction of the heat exchanger 12, and the outdoor side suction port is provided on the side wall opposite to this side wall. 5 and the indoor air outlet 6 are provided. Further, as described above, the motor rotation shafts of the exhaust blower 10 and the supply air blower 11 are
It is installed perpendicular to the direction of insertion and removal of the heat exchanger 12 into and out of the box body 1, and from the relationship of the vane casing 13, the air is discharged parallel to the direction of insertion and removal of the heat exchanger 12, and then the airflow is perpendicular to the direction of insertion and removal of the heat exchanger 12. The indoor air outlet 6 and the outdoor air outlet 7 are arranged to blow out air from the indoor air outlet 6 and the outdoor air outlet 7.

In the ventilation system with a heat exchanger configured as described above, in air conditioning ventilation using the heat exchanger 12, the opening 33 is closed by the damper 34, and the opening 33 is closed by the damper 34.
By opening the air blowers 10 and 11 and operating the respective blowers 10 and 11, indoor air is sucked into the indoor suction chamber 29 from the indoor suction port 4 through the duct.
It passes through the exhaust passage 8 leading to the opening 30 → indoor suction passage 27 → chamber 20 → heat exchanger 12 → chamber 17 → opening 23 → exhaust blower chamber 22, and is blown out from the outdoor air outlet 7 by the exhaust blower 10 to open the duct. It is discharged outdoors through the Outdoor air is sucked into the outdoor suction chamber 26 from the outdoor suction port 5 through the duct,
The air passes through the air supply passage 9 leading to the chamber 19 → heat exchanger 12 → chamber 18 → opening 25 → supply air blower chamber 24, and is blown out from the indoor air outlet 6 by the air supply blower 9 and supplied into the room through the duct. be done. At this time, heat exchange is performed between the exhaust air flow and the supply air flow in the heat exchanger 12, and the exhaust heat is recovered to reduce the heating and cooling load. On the other hand, during the intermediate seasons such as spring and autumn when heating and cooling are not required,
As shown in FIGS. 4 and 5, by rotating the damper 34 to close the opening 30 and open the opening 33, and operating the respective blowers 10 and 11, the outside air is supplied to the air conditioner and ventilated. It is carried out in the same manner, but the indoor air is sucked into the indoor suction chamber 29 from the indoor suction port 4 through the duct, and
→ Bypass passage 31 → Opening 32 → Chamber 17 → Opening 2
3→Exhaust air passes through the bypass ventilation path leading to the exhaust fan room 22, is blown out from the outdoor air outlet 7 by the exhaust air blower 10, and is discharged to the outside through the duct. In this way, since the exhaust flow does not pass through the heat exchanger 12, there is less resistance in the ventilation path, and sufficient normal ventilation is provided. As mentioned above, the heat exchanger 12 becomes dirty due to air-conditioning ventilation or normal ventilation, and it becomes necessary to clean it. Since the heat exchanger 12 is inserted and removed perpendicularly to the direction in which the suction ports 4 and 5 and the blow-off ports 6 and 7 are formed, the air supply and exhaust piping does not get in the way. There is no. Furthermore, since the rotational axes of the exhaust blower 10 and the supply air blower 11 are provided perpendicular to the insertion/removal direction of the heat exchanger 12, the large blade casing 13 is parallel to the heat exchanger 12. As a result, the depth dimension of the box body 1 becomes smaller. The width dimension is determined by the dimensions of the heat exchanger 12.

Note that the above conventional method uses a suction method in which the blowers 10 and 11 are provided downstream of the heat exchanger 12, but the sixth
Similar effects can be expected even if the push-in method is used in which the blowers 10 and 11 are provided upstream of the heat exchanger 12 as shown in FIGS.

[Effects of the Invention] As explained above, the present invention includes a box body having an indoor suction port and an air outlet on one side of opposing side walls, and an outdoor suction port and an air outlet on the other side; An air supply passage and an exhaust passage that communicate between the indoor side and the outdoor side are provided in the box body so as to intersect between the inlet and the outlet, and air supply flows are provided in these air supply passages and exhaust passages, respectively. or a centrifugal fan that forms an exhaust flow, and a centrifugal fan that is removably installed at the intersection,
It is equipped with a heat exchanger that exchanges heat between the supply air flow and the exhaust air flow. The rotation axis of at least one of the centrifugal fans forming the exhaust flow is perpendicular to the insertion/removal direction of the heat exchanger, and the blowing direction of the air from the centrifugal fan is communicated with the air outlet from the centrifugal fan. By arranging it so that the blowing direction of the blowing air from the centrifugal fan is perpendicular to the blowing direction, there is no obstruction when inserting and removing the heat exchanger, making it easy to insert and remove the heat exchanger, and the blowing direction of the blowing air from the centrifugal fan and the blowing direction from the blowing outlet communicating with the centrifugal fan are orthogonal to each other,
The blowing air from the centrifugal fan changes its direction approximately at right angles in front of the outlet, and the pressure of the blowing air is equalized.
Since the dynamic pressure loss of the blowing air can be reduced and the rotational axis direction of the centrifugal fan and the blowing direction of the blow-off port are parallel to each other, the depth dimension of the box body can be reduced.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an embodiment of the present invention with the lid removed, Fig. 2 is a plan view showing the flow of wind, Fig. 3 is a side view of Fig. 2, and Fig. 4 is a side view of Fig. 2.
The figure is a plan view showing a state in which a bypass passage is used.
Figure 5 is a plan view showing the wind flow in Figure 4;
FIG. 6 is a plan view showing another embodiment of the present invention, FIG. 7 is a side view of FIG. 6, and FIG. 8 is an exploded perspective view showing a conventional ventilation system with a heat exchanger. In addition, the same reference numerals in each figure indicate the same or equivalent parts, 1 is a box body, 4 is an indoor suction port, 5 is an outdoor suction port, 6 is an indoor air outlet, 7 is an outdoor air outlet,
8 is an exhaust passage, 9 is an air supply passage, 10 is an exhaust blower, 11 is a supply air blower, and 12 is a heat exchanger.

Claims (1)

[Claims] 1. A box 1 having an indoor suction port 4 and an air outlet 6 on one side of opposing side walls and an outdoor suction port 5 and an air outlet 7 on the other side, and this box. An air supply passage 9 and an exhaust passage 8 which are provided in the body 1 to intersect between the suction ports 4, 5 and the air outlets 6, 7 and which communicate the indoor side and the outdoor side, and these air supply passages 9. and centrifugal fans 11 and 10 that form a supply air flow or an exhaust flow, respectively provided in the exhaust passage 8, and a centrifugal fan 11, 10 that is removably installed at the intersection and exchanges heat between the supply air flow and the exhaust flow. The opposite side walls of the box body 1, which is equipped with an exchanger 12 and provided with the suction ports 4, 5 and the blow-off ports 6, 7, are parallel to the insertion/removal direction of the heat exchanger 12, and the supply air flow or The rotation axis of at least one of the centrifugal fans 11, 10 forming the exhaust flow is perpendicular to the direction of insertion and removal of the heat exchanger 12, and the direction of the air blowing from the centrifugal fans 11, 10 is perpendicular to the direction of insertion and removal of the heat exchanger 12. A ventilation system with a heat exchanger, characterized in that the blowing direction of the air from the blow-off ports 6, 7 communicating with the centrifugal fans 11, 10 is orthogonal to each other. 2 Both rotation shafts of each centrifugal fan 11, 10 forming the supply air flow or exhaust flow are connected to the heat exchanger 12.
The heat exchanger-equipped ventilation according to claim 1, characterized in that the heat exchanger 12 is disposed between the heat exchanger 12 and the air outlets 6 and 7 communicating with the heat exchanger 12 so as to be orthogonal to the insertion/removal direction of the heat exchanger. Device.