JPH0561542B2 - - 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 inlets and outlets 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 blower provided in the exhaust passage 8 and forming an exhaust flow; 11, a blower provided in the air supply passage 9, forming a supply air flow;
Reference numeral 12 is provided at the intersection and is also removably inserted into the box.
A heat exchanger shown in Japanese Patent No. 19990 and exchanging temperature and humidity between the supply air flow and the exhaust air flow, 13
are the blade casings of the blowers 11 and 10, 14
is a cover that closes the insertion/removal opening of the heat exchanger 12, and is provided on the same side wall as the side wall where the suction port and the air 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 cleaning is done 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,
It is said that the indoor air outlet 6 and the outdoor air outlet 7 intersect with the indoor air inlet 4 and the outdoor air inlet 5 when viewed from above the box 1, and are inserted incorrectly, making it easy to make mistakes in duct piping work. There was a problem.

This invention was made to solve the above problem, and an object of the present invention is to provide a ventilation system with a heat exchanger that does not make mistakes in the piping of the supply/exhaust duct.

[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 facing each other, and an outdoor air 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 so as to intersect with each other midway between each suction port and the air outlet; and these air supply passages and exhaust passages. and forming an air supply flow or an exhaust flow arranged such that the rotating shaft of at least one of them is substantially parallel to the blowing direction of the air outlet of the communicating air supply passage or exhaust passage. Equipped with a centrifugal fan and a heat exchanger that is removably installed at the intersection and exchanges heat between the supply air flow and the exhaust air flow, it is equipped with an outdoor suction inlet, an indoor air outlet, and an indoor suction inlet. The air outlet and the air outlet on the outdoor side are arranged substantially in a straight line.

[Function] In this invention, the outdoor suction port and the indoor air outlet, and the indoor air suction port and the outdoor air outlet are arranged on a substantially straight line, so that the air supply and exhaust directions are each substantially linear. This prevents mistakes in duct piping.

[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
A heat exchanger chamber 8, 19, and 20 are formed, and 22 is an exhaust blower chamber in which an exhaust blower 10 is installed, which communicates with the chamber 17 through an opening 23 in the partition plate 16. Outdoor outlet 7
is provided. 24 is the chamber 18 and the partition plate 1
Air supply blower 1 communicated with an opening 25 provided in 6
In the air supply blower room with 1 inside, the vane casing 1
An indoor air outlet 6 is provided at the end of 3. The exhaust air blower 10 and the air supply air blower 11 are both centrifugal fans, and are provided so that their rotational axes and the blowing direction to the outside of the box body 1 are parallel to each other.
Reference numeral 26 denotes an outdoor suction chamber provided at the lower and side portions of the exhaust blower chamber 22, which communicates with the chamber 19 through an opening (not shown) in the partition plate, and an outdoor suction chamber 5 provided in the side wall. ing. 27 is the above room 20
An indoor suction passage provided at the lower part of the supply air blower chamber 24 communicates with the partition plate 16 through an opening 28, and 29 represents an indoor suction chamber that communicates with the indoor suction passage through an opening 30. , an indoor suction port 4 is provided on the side wall. 31 is the heat exchanger room 2
A bypass passage provided on the side of partition plate 1.
6 are provided with openings 32 and 33 to open the exhaust blower chamber 2.
2 and the indoor suction chamber 29 are communicated with each other. 3
Reference numeral 4 denotes a damper provided in the indoor suction chamber 29, which is rotatably formed 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 body 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. The opening 5 and the indoor air outlet 6 are provided, and the outdoor air inlet 5 and the indoor air outlet 6, the indoor air inlet 4 and the air outlet 7 are approximately arranged in a straight line.

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,
Opening 30 -> Indoor side suction passage 27 -> Room 20 -> Heat exchanger 12 -> Opening 23 -> Exhaust air blower Passes through the exhaust passage 8 leading to the exhaust blower room 22, and is blown out from the outdoor air outlet 7 by the exhaust air blower 10 to the outside through the duct. is discharged. Outdoor air is sucked into the outdoor suction chamber 26 from the outdoor suction port 5 through the duct, and then flows into the chamber 19→
The air passes through the air supply passage 9 from the heat exchanger 12 to the chamber 18 to the opening 25 to the air supply blower chamber 24, is blown out from the indoor air outlet 6 by the air supply blower 9, and is supplied into the room via the duct. 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 intermediate seasons such as spring and autumn when heating and cooling are not required, the damper 34 is rotated to close the opening 30 and open the opening 33, as shown in FIGS. 4 and 5. By operating the , outside air is supplied in the same manner as the air conditioning ventilation described above, but indoor air is sucked into the indoor suction chamber 29 from the indoor suction port 4 through the duct, and then flows from the opening 33 to the bypass passage 31. The air passes through a bypass passage leading to →opening 32→exhaust blower chamber 22, is blown out from the outdoor air outlet 7 by the exhaust air blower 10, and is discharged outdoors via 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.
2 can be cleaned with a vacuum cleaner, etc., and the heat exchanger 12 can be inserted and removed through the suction ports 4,
5 and the direction in which the air outlets 6 and 7 are formed, so that the air supply and exhaust piping does not interfere with the air supply and exhaust air supply. In addition, since the outdoor suction port 5 and the outdoor air outlet 6 and the indoor suction port 4 and the outdoor air outlet 7 are arranged on a substantially straight line when viewed from above the box 1, the piping relationship is natural. This will prevent you from making mistakes when connecting piping.

In the above embodiment, the air blowers 10 and 11 are provided downstream of the heat exchanger 12, but as shown in FIGS. 6 and 7, the air blowers 10 and 11 are
Similar effects can be expected even with a push-in method in which the heat exchanger is provided upstream of the heat exchanger 12.

[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 the opposing sides, and an outdoor suction port and an air outlet on the other side, and An air supply passage and an exhaust passage that communicate between the indoor side and the outdoor side are provided so as to intersect with each other halfway between the suction port and the air outlet, and an air supply passage and an exhaust passage that are provided in the air supply passage and the exhaust passage, respectively, and that communicate with the indoor side and the outdoor side. A centrifugal fan that forms a supply air flow or an exhaust flow is arranged such that at least one of the rotating shafts is substantially parallel to the blowing direction of the outlet of the communicating air supply passage or exhaust passage, and the centrifugal fan is inserted at the intersection. It is equipped with a removable heat exchanger that exchanges heat between the supply air flow and the exhaust air flow, and has an outdoor suction port and an indoor air outlet, and an indoor air intake port and an outdoor air outlet, respectively. By arranging the air supply and exhaust in a substantially straight line, the supply and exhaust directions are approximately straight, making it easy to see the supply and exhaust directions and preventing mistakes in piping the supply and exhaust ducts. Since it is approximately parallel to the blowing direction to the outside of the box, the entire device can be made compact.

[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)

[Scope of Claims] 1. A box 1 having an indoor suction port 4 and an air outlet 6 on one side facing each other, and an outdoor air suction port 5 and an air outlet 7 on the other side; An air supply passage 9 and an exhaust passage 8 that communicate between the indoor side and the outdoor side are provided so as to intersect with each other midway between the suction port and the air outlet, and an air supply passage 9 and an exhaust passage 8 are provided in the air supply passage 9 and the exhaust passage 8, respectively, and communicate with the indoor side and the outdoor side. , and the rotation axis of at least one of them forms an air supply flow or an exhaust flow arranged so as to be substantially parallel to the blowing direction of the blow-off ports 6, 7 of the communicating air supply passage 9 or exhaust passage 8. centrifugal fans 10 and 11, and a heat exchanger 12 that is removably installed at the intersection and exchanges heat between the supply air flow and the exhaust air flow, and A ventilation system with a heat exchanger characterized in that an indoor air outlet 6, an indoor air inlet 4, and an outdoor air outlet 7 are arranged substantially in a straight line. 2. The rotary shafts of the centrifugal fans 10 and 11 provided in the air supply passage 9 and the exhaust passage 8 are both arranged substantially parallel to the direction of air blowing out of the box body 1. A ventilation system with a heat exchanger according to claim 1.