JPH0356829Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field This invention relates to a ventilation and heat exchange device for cold regions that is particularly suitable for use in general households. The present invention relates to a ventilation and heat exchange device for cold regions that can exchange heat between warm air taken in from outside and cold air taken in from outside.

Prior Art and Its Problems Generally, when heating the interior of a building in winter in a cold region, it is desirable to take in as much fresh outside air as possible to provide healthy air conditioning of the interior. However, when a large amount of outside air is taken in, the indoor temperature fluctuates due to the outside air taken in, resulting in a problem that the heating efficiency deteriorates and the operating cost of the heating device increases. Therefore, in order to solve this problem, conventional methods have been equipped with a casing that is placed through the wall that separates the indoor and outdoor areas, and an inlet and an outlet are provided on the indoor and outdoor sides of the casing, respectively. , an air supply passage and an exhaust passage extending from the indoor side to the outside are provided in the casing so as to intersect with each other via a partition wall between the suction port and the discharge port, and this intersection portion is provided with heat conduction and ventilation. A ventilation and heat exchange device is provided with a heat exchanger in which a plurality of layers of moist partition plates are stacked at predetermined intervals, and an intake air flow and an exhaust air flow alternately pass between these layers. (Refer to Japanese Patent Publication No. 17177/1983). However, conventional ventilation/heat exchange equipment has the following problems. That is, in cold regions, the partition plates of the heat exchanger freeze and break when used in winter. In addition, with conventional equipment,
Condensation may occur on both the inside and outside of the part of the casing facing indoors, and water droplets may be blown indoors by the intake air flow.

The purpose of this invention is to provide a ventilation and heat exchange device for cold regions that solves the above problems.

Means to solve the problem The ventilation and heat exchange device for cold regions according to this invention is
An exhaust passage and an air supply passage are provided in the casing via a partition wall that divides the inside of the casing into left and right sides.
Both passages each have a substantially U-shape when viewed from the side, and both sides thereof are opened in the upper wall of the casing, with one end serving as an inlet and the other end serving as an outlet, and the passages are connected to the inlet of the exhaust passage. A heat pipe is disposed through the partition wall so as to straddle the lower part of the vertically extending portion connected to the outlet of the air supply passage and the vertically extending portion connected to the outlet of the air supply passage, and a blower is installed in each passage. are arranged.

In the above, both a Wick type heat pipe and a Wickless type heat pipe can be used. In the latter case, the exhaust passage is located at the bottom in the winter, and the air supply passage is located at the bottom in the summer. The heat pipe is preferably made movable so that it can assume two inclined states.

Embodiments Hereinafter, embodiments of this invention will be described with reference to the drawings. In the following description, left and right refer to the left and right in FIG. Further, front and rear are based on FIG. 2, and the front refers to the right side in the figure, and the rear refers to the left side in the figure.

In FIGS. 1 to 5, a cold region ventilation/heat exchange device 1 is installed in a manner that allows the wall to be removed. An exhaust passage 4 is provided on the left side, and an air supply passage 5 is provided on the left side. Both passages 4 and 5 are each substantially U-shaped when viewed from the side, and both ends thereof are connected to the casing 2.
A vertically extending portion 4a that is opened at the upper end, has inlets 6, 8 at one end, and outlets 7, 9 at the other end, and is connected to the exhaust inlet 6 in the exhaust passage 4.
A heat pipe 10 is disposed passing through the partition wall 3 so as to straddle the lower part of the air supply passage 5 and a vertically extending portion 5a connected to the air supply outlet 9. A centrifugal blower 20 is disposed at each of the two.

The casing 2 has a vertical rectangular shape when viewed from the side, and has both upper and lower walls 11a, 11b and both left and right walls 11c.
The casing body 11 includes a rear wall 11d and a front opening, and a removable lid 12 that closes the front end opening of the casing body 11. A partition plate 1 that partitions the inside of the casing 2 into front and back parts is located in a part slightly toward the rear of the center part of the front and back inside the casing 2.
3 is provided to penetrate the partition wall 3. The upper edge of the partition plate 13 is the upper wall 11a of the casing body 11.
It is fixed between the exhaust inlet 6 and the air supply inlet 8 and the exhaust outlet 7 and the air supply outlet 9. Furthermore, a partition plate 14 is provided in the casing 2 at an intermediate height of a portion in front of the partition plate 13 so as to pass through the partition wall 3 and partition this portion into upper and lower parts. In addition, the partition plate 1 in the casing 2
Air filter 1 is installed at the upper end of the part in front of 3.
8 is provided. The air filter 18 is configured to be detachable from the front end opening of the casing body 11.

The partition wall 3 includes a first component 3a located rearward of the partition plate 13 in the left and right center, and a first component 3a located in front of the partition plate 13 in the left and right center and
4, and a third component 3c, which is located in front of the partition plate 13 and below the partition plate 14 in a portion slightly to the right of the left and right center. has been done. The left half of the partition plate 13 below the partition plate 14 is removed, and the remaining right half of the partition wall 3 on the right side of the third component 3c is removed. . Partition plate 14
In the front part of the partition wall 3, the second component 3b
Air circulation holes 15 and 16 are formed on both the left and right sides of the main body, respectively. At the rear edge of the left air circulation hole 15 on the lower surface of the partition plate 14, an air guide plate 17 is provided which projects downward. and partition plate 1
3, the exhaust passage 4 is formed into a substantially U-shape when viewed from the side, and the partition plate 13 and the air guide plate 17 form the air supply passage 5 into a substantially U-shape when viewed from the side.

Furthermore, drain pans 27 and 28 are attached to the lower wall 11b of the casing body 11 on both left and right sides of the third component 3c of the partition wall 3, respectively. The drain pans 27 and 28 each have a drain pipe 2 for discharging the drain to the outside of the casing body 11.
9 and 30 are attached. Although not shown, the drain pipes 29 and 30 are provided with drain tanks.

The blower 20 is arranged above the partition plate 14. The blower 20 is arranged to pass through the second member 3b of the partition wall 3, and has two driving shafts 21a, 21b.
A driving electric motor 21 with a drive shaft 21a on the right side
The exhaust multi-blade centrifugal impeller 22 attached to the exhaust gas, the casing 23 of this impeller 22, and the air supply multi-blade centrifugal impeller 24 attached to the left driving shaft 21b.
and a casing 25 of this impeller 24. By this blower 20, indoor exhaust gas is introduced into the exhaust passage 4 from the exhaust inlet 6, flows downward through a vertically extending portion 4a connected to the exhaust inlet 6 of the exhaust passage 4, and is passed through the partition plate 13. The air passes between the lower end of the partition plate 11b and the lower wall 11b, reaches the rear of the partition plate 13, ascends the portion between the partition plate 13 and the rear wall 11d, and is discharged to the outside from the exhaust outlet 7. On the other hand, outdoor fresh air is introduced into the air supply passage 5 from the air supply inlet 8 by the blower 20, and
, flows downward through the portion between the air guide plate 17 and the lid 12 , passes between the lower end of the guide plate 17 and the lower wall, reaches the rear thereof, and reaches the air supply outlet 9 of the air supply passage 5 .
The air rises through the vertically extending portion 5a connected to the air supply outlet 9 and is sent out from the air supply outlet 9.

The heat pipe 10 is arranged to penetrate the third component 3c of the partition wall 3. This heat pipe 10 is of the Wickless type, and the exhaust passage 4
It is slanted so that the sides are facing downwards.
A large number of fins 26 are attached to the heat pipe 10.

FIG. 6 shows the usage status of the ventilation/heat exchange device for cold regions.

The cold region ventilation/heat exchange device 1 is placed indoors in a house H. Exhaust ducts 31 and 32 are connected to the exhaust inlet 6 and the exhaust port 7, respectively. The exhaust duct 31 connected to the exhaust inlet 6 is
This is for guiding exhaust air from the bathroom B, toilet T, kitchen K, and each living room R to the ventilation/heat exchange device 1. The exhaust duct 32 connected to the exhaust outlet 7 is
This is for discharging the exhaust gas sent out from the exhaust passage 4 outdoors. In addition, ventilation and heat exchange equipment 1
Air supply ducts 33 and 34 are connected to the air supply inlet 8 and the air supply outlet 9, respectively. The air supply duct 33 connected to the air supply inlet 8 is for introducing outdoor fresh air into the air supply passage 5. The air supply duct 34 connected to the air supply outlet 9 is for feeding the air coming out of the air supply passage 5 into each living room R. Although not shown, the openings of the exhaust duct 31 and the air supply duct 34 to the bathroom B, toilet T, kitchen K, and each living room R are provided with dampers that can be opened and closed.

In such a configuration, in the winter, the air in each living room R heated by the heating device, the dirty and warm air containing water vapor in the bathroom B, toilet T, and kitchen K is transferred to the exhaust duct 31, the ventilation It is discharged outdoors through the exhaust passage 4 and exhaust duct 32 of the combined heat exchange device 1. On the other hand, fresh and cold outdoor air is sent into each living room R through the air supply duct 33, the air supply passage 5 of the ventilation/heat exchange device 1, and the air supply duct 34. Then, the heat of the exhaust gas passing through the exhaust passage 4 is transmitted to the supply air passing through the air supply passage 5 by the heat pipe 10, thereby warming the supply air. At this time, the outer peripheral surface of the portion of the heat pipe 10 located inside the exhaust passage 4 and the fin 2
Condensation occurs on the surface of the drain pipe 6, but this condensed water is caused to fall by the downward flow of exhaust gas generated by the blower 20, enters the drain pan 28, and is discharged from the drain pipe 30. Therefore, the exhaust gas sent out from the exhaust outlet 7 does not contain the dew condensed water, so that the duct 32 connected to the exhaust outlet 7 can be prevented from rusting, and freezing within the exhaust duct 32 can be prevented.

In addition, in the summer, the heat pipe 10 is tilted so that the portion of the heat pipe 10 on the air supply passage 5 side is located downward. The air in each living room R cooled by the air conditioner, the dirty air in the bathroom B, the toilet T, and the kitchen K, and the air containing water vapor are transferred to the exhaust duct 31, the ventilation/heat exchange device 1,
The air is discharged outdoors through the exhaust passage 4 and the exhaust duct 32. On the other hand, fresh and hot outdoor air is sent into each living room R through the air supply duct 33, the air supply passage 5 of the ventilation/heat exchange device 1, and the air supply duct 34. Then, the heat of the supply air passing through the air supply passage 5 is absorbed by the exhaust gas passing through the exhaust passage 4 by the heat pipe 10, and the supply air is cooled. Therefore, indoor temperature fluctuations due to ventilation are reduced,
Cooling efficiency is improved and operating costs of the cooling device can be saved. At this time, the air supply passage 5 of the heat pipe 10
Condensation occurs on the outer circumferential surface of the inner portion and on the surface of the fins 26. This condensed water rises with the supplied air, hits the partition plate 14, falls and enters the drain pan 27, and is drained from the drain pipe 29. Since the air is discharged, it is prevented from being sent to each living room R through the air supply duct 33.

Effects of the invention The ventilation and heat exchange system for cold regions according to this invention is constructed as described above, so that in winter, the cold air from outside is exhausted by the action of the heat pipe before being introduced indoors. It can be warmed by the heat it has. Therefore, indoor temperature fluctuations due to ventilation are reduced, heating efficiency is improved, and operating costs of the heating device can be saved. Further, in winter, dew condensation occurs on the outer peripheral surface of the portion of the heat pipe located on the exhaust passage side, but even if this condensation freezes, the heat pipe will not be damaged. In addition, the exhaust gas is sucked in from the inlet by the blower, is forced down the vertically extending part of the exhaust passage connected to the inlet, is reversed at the lower end, and is raised up the vertically extending part connected to the outlet. Since the heat pipe is located at the bottom of the vertically extending part of the exhaust passage connected to the inlet, the condensed water generated in the heat pipe is transferred to the exhaust air generated by the blower. is caused to fall by the downward flow of water. Therefore, the exhaust gas sent out from the exhaust outlet does not contain the dew condensed water, so that the duct connected to the exhaust outlet can be prevented from rusting, and freezing within the exhaust duct can be prevented. Moreover, all the ducts connected to the entrances and exits at both ends of the exhaust passage and the air supply passage can be attached to the upper wall of the casing. Therefore, the duct installation work can be easily performed. Furthermore, these ducts do not exist in front of the casing, allowing effective use of this space. Furthermore, there is no need to form a through hole in the wall of the building, making installation easier.

[Brief explanation of the drawing]

The drawings show an embodiment of this invention; Figure 1 is a partially cutaway front view of a ventilation/heat exchange device for cold regions;
The figure is a cross-sectional view along the - line in Figure 1, Figure 3 is a cross-sectional view along the - line in Figure 1, Figure 4 is a plan view of the ventilation and heat exchange device for cold regions, and Figure 5 is a perspective view of the same. , FIG. 6 is a diagram showing the state in which the ventilation and heat exchange device for cold regions is used in a house. 1...Ventilation and heat exchange device for cold regions, 2...Casing, 3...Partition wall, 4...Exhaust passage, 4a...Vertically extending portion, 5...Air supply passage, 5a...
Portion extending vertically, 6...Exhaust inlet, 7...
Exhaust outlet, 8...Air supply inlet, 9...Air supply outlet, 1
0...Heat pipe, 20...Blower.

Claims (1)

[Scope of utility model registration request] An exhaust passage and an air supply passage are provided in the casing via a partition wall that divides the inside of the casing into left and right, and both passages are approximately U-shaped when viewed from the side, and both ends thereof are connected to the casing. It is opened in the upper wall and has one end as an inlet and the other end as an outlet, and has a vertically extending portion connected to the inlet in the exhaust passage and a vertically extending portion connected to the outlet in the air supply passage. A ventilation and heat exchange device for cold regions in which heat pipes are placed through the partition wall so as to span the lower part, and blowers are placed in both passages.