JPS60155840A - Ventilation - Google Patents

Abstract

PURPOSE:To permit to keep the heat exchanging efficiency of a heat pip in a high condition by a method wherein indoor air is passed through a passage for discharging air from the inside of a room to the outside of the room when the passage is frozen in winter while the indoor air is passed through the passage for feeding air from the inside to the outside of the room or air is not passed therethrough. CONSTITUTION:When the passage for discharging air is frozen in winter, the rooms 13, 14, 15 are utilized as the passage for feeding air and the rooms 16, 17 18 are utilized as the passage for discharging air. In this case, discs 24a, 24b are rotated by a motor 25 and the motor is stopped at a position whereat windows 13a, 16a are opened and the windows 13b, 16b are closed. Outerdoor air is introduced into the rooms by a fan 26 through the rooms 13, 14, 15 (as shown by an arrow sign C) and the air is discharged to the outside of the rooms by the fan 29 through the rooms 18, 17, 16 (as shown by the arrow sign D). The heat of discharging air is deprived by the heat pipe 27 during passing through the room 17 while the feeding air receives the heat and is heated by the heat pipe 27 during passing through the room 14 and, thus, heat exchange between the discharging air and the feeding air may be effected.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a ventilation method for exchanging indoor air and outdoor air while exchanging heat between the two.

[Background technology]

With the depletion of fossil fuels, energy conservation is being called for. Under these circumstances, reducing the cooling and heating loads is a major issue in terms of saving fossil fuels, and it also leads to savings in household electricity consumption.

When cooling or heating the room, the room is usually sealed to some extent, so in order to keep the amount of carbon dioxide and oxygen in the room at an appropriate level, it is natural to keep a certain amount of carbon dioxide and oxygen per hour (5 in a 6 tatami room). When moving in, it is necessary to replace indoor air with outdoor air (it is said that a ventilation volume of 100 m3/hour is required). However, simply ventilating will lead to an increase in the cooling load or heating load, so when ventilating, heat exchange is performed between the exhaust air and the supply air.

Figure 1 depicts one of the ventilation systems used to implement conventional ventilation methods. As shown in the figure, this ventilation system has a box 1, and the inside of the box 1 is divided into two upper and lower passages 3 and 4 by a horizontally arranged plate 2. Three heat vibes 5 penetrate and are fixed to the plate 2 with the evaporation part facing downward and the condensation part facing upward, and fins 6 are provided at the upper and lower ends of the heat vibes 5. is fixed. This heat vibe 5 is used as a heat exchange element. The passage 3.4 is a window 3a provided on the outdoor side (arrow entry side in the figure) and the indoor side (arrow B in the figure) of the box l.

3b, 4a, and 4b open to the outside. aisle 3
Fans 7.8 are arranged at the outdoor window 3a of the passageway 4 and the indoor window 4b of the passageway 4, respectively.
A blade 9 is provided on the outdoor window 4a of the passageway 4 and the passageway 4.

Conventional ventilation methods are performed as follows.゛In winter, the fans 7 and 8 are rotated to supply cold air from outside to the inside of the door through the passage 3, and exhaust warm air from inside the door to the outside through the passage 4. Ventilate the area. Heat is removed from the exhaust air by the heat vibrator 5 while passing through the passage 4.

Since heat is transferred from the lower end to the upper end of the heat vibrator 5, the supply air passing through the passage 3 is warmed by this heat.

As mentioned above, in this ventilation method, the heat taken from the exhaust air is imparted to the supply air, and the warmed supply air is introduced indoors, so that the heating load can be reduced. However, during the extremely cold season, the following problems may occur. That is, when the heat vibe 5 is cooled to the lower end by the cold supply air passing through the passage 3, the moisture in the exhaust air passing through the passage 4 is absorbed by the surface of the lower end of the heat vibe 5 and the surface of the fins 6 provided at the lower end. A part of the water condenses and forms condensation. During extremely cold seasons, the surface of the lower end of the heat vibrator 5 and the surface of the fins 6 provided at the lower end may be cooled to below 0°C. In such cases, condensed water may form on the surface of the lower end of the heat vibrator 5 or The problem is that it freezes on the surface of the fins 6, reducing the heat exchange efficiency of the heat vibrator 5. When the heat exchange efficiency of the heat vibrator 5 decreases, the fins 6 become clogged due to freezing of condensed water, making it difficult for the exhaust air to pass through, further reducing the ventilation efficiency and causing loss of air blowing pressure (pressure drop) due to the fan. Problems such as increase in the number of children also arise.

[Purpose of the invention]

The present invention was made in view of the above circumstances, and an object of the present invention is to provide a ventilation method that can maintain the heat exchange efficiency of a heat vibrator at a high level even in extremely cold seasons.

[Disclosure of the invention]

In order to achieve the above object, the present invention exhausts air inside the door from the inside to the outside through one passage, and supplies outside air from the outside to the inside through another passage,
In a ventilation method that exchanges heat between exhaust air and supply air, when the exhaust passage freezes in winter, the air inside the door is passed through this passage from inside the door to the supply air. The gist of the passage is a ventilation method that is characterized by either allowing the air inside the door to pass from one door to another, or preventing the air from passing through.

Hereinafter, embodiments of the present invention will be explained in detail with reference to the accompanying drawings.

FIGS. 2 to 7 show a ventilation device used to carry out the ventilation method according to the present invention. As shown in the figure, this ventilation system consists of a plate (partition plate) placed horizontally in the center.
It has a box body 19 whose interior is divided into six rooms 13 to 18 by plates 11 and 12 arranged vertically on both sides, and the rooms 13 and 16 at the rear end are ventilation opening switching parts. , room 14°17 in the center is the heat exchange element part, room 1 in the front end
5°18 is a ventilation section. The rooms 13 and 16 communicate with the outside through windows (ventilation ports) 13a, 13b, 16a, and 16b provided in the walls on the outside side (arrow entry side) and inside the door side (arrow B side). At the rear ends of both sides of the room 13.16, there are shafts (support rods) 20.
21 is rotatably arranged such that both ends thereof are supported by bearings such as bearings. A plate 20 is attached to the shaft 20.
a, 20b, and the shaft 21 has plates 21a, 21b.
are fixed, and the plates 20a, 20b, 21a, 21
b are windows 13 b, 16 b, and 13 a, respectively.
, 16% (DFC street JR road 1-mber)
It becomes. And each plate body 20a, 20b.

The shafts 21a and 21b are rotatably arranged in the centers of the chambers 13 and 16, which are always urged in the opening direction by the springs 22, so that the shafts 23 pass through the plate 10. At both ends of 23, a disc (damper movable plate) 24a is provided.
, 24b are fixed. As shown in the figure, the axis 23 passes through the circles &24a, 24b at off-center positions. On the end face of the disk body 24a, a plate body 20a and a plate body 21a are provided.
The inner surfaces of the plate 20b and the plate 21b are pressed against the end surface of the disc 24b by the biasing force of the spring 22, respectively. A motor 25 (such as a stepping motor) for rotating the shaft 23 is disposed in the middle of the shaft 23, and the motor 25 rotates the disks 24a and 24b by 180 degrees, as shown in FIGS. 4 and 5. like,
The windows 13b, 16b are closed by pushing the plates 20a, 20b at the edge of the discs 24a, 24b farthest from the axis 23 against the force of the spring 22, and the spring 22 closes the plate 21a.

21b to open the windows 13a and l6a.

Further, as shown in FIGS. 6 and 7, the plates 2'la,
21b against the force of the spring 22, the window 13a is opened.
, 16a are closed and the plate body 20 is closed by the spring 22.
Windows 13b and 16b can be opened by pulling windows 13b and 20b closer together. Rooms 13 and 14. The rooms 16 and 17 are connected to each other through windows 11a and 11b provided in the plate 11, respectively, and a fan 26 is arranged in the window 11a. Two heat vibrators 27 as heat exchange elements are arranged in the rooms 14 and 17 so as to penetrate through the plate 10. Here, the heat pipe 27 is
The heat pipe 27 is arranged with the evaporating section facing downward and the condensing section facing upward, and fins 28 are fixed to the lower and upper ends of the heat pipe 27. Rooms 14 and 15. The rooms 17 and 18 are connected to each other by windows 12a and 12b provided in the plate 12, and a fan 2 is installed in the window 12b.
9 is placed. Windows (ventilation holes) 15a and 15b are provided on the wall on the door side of the room 15.18. Room 1
3.14.15 and rooms 16 and 17.

18 each form a passage (ventilation path).

In the figure, 30 is raining down the wall.

The ventilation method according to the present invention is carried out using this ventilation device as follows. In winter, room 13°14.15
is used as the air supply passage, and the room 16° 17.18 is used as the exhaust passage. That is, as shown in FIGS. 4 and 5, the motor 25 drives the discs 24a and 24b.
Rotate the window 13a.

These are stopped at a position where window 16a is opened and windows 13b and 16b are closed. Then, the fan 26 passes the outdoor air through the rooms 13, 14, and 15 (in the direction of arrow C) into the door, and the fan 29 moves the air into the rooms 18, 17, and 16.
(in the direction of the arrow) and take it out the door. Exhaust air is in room 1
7, heat is removed by the heat vibrator 27, and while the supply air passes through the room 14, it receives this heat from the heat vibrator 27 and is warmed, and heat exchange occurs between the exhaust air and the supply air. be exposed. Therefore, the heating load can be reduced.

During extremely cold seasons, condensed water can be absorbed by the surface of the lower end of the heat pipe 27 or by the fins 28 fixed to the lower end of the heat pipe 27.
If the heat exchange efficiency of the heat vibrator 27 decreases or is likely to decrease due to freezing on the surface, the fan 26
．． Figures 6 and 7 with 29 rotated in the same direction.
As shown in the figure, the motor 25 moves the disk 24 a
124b is rotated 180 degrees from the state shown in FIG. 4 and FIG.
Open 6b. The sensor that detects freezing of condensed water is motor 2.
Conveniently, this can be done automatically by commands of this sensor.

Then, the warm air inside the door will disappear.IB, 17
.

16 and Rooms 1:3, 14, and 15 in order and return to the circular door for circulation. When the warm air inside the door passes through the room 17, the condensed water that has frozen on the surface of the lower end of the heat vibrator 27 and the surface of the fin 28 fixed to the lower end of the heat pipe 27 melts. The warm air inside the door passing through the room 14 does not directly melt the frozen condensed water, but by warming the upper end of the heat pipe 27, heat is transferred from the lower end of the heat pipe 27 to the upper end. Since this prevents the condensed water from moving, the air inside the door passing through the room 17 can efficiently melt the frozen condensed water. By melting frozen condensed water in this way, it is easy to maintain the heat exchange efficiency of the heat pipe at a high level even in extremely cold seasons, which can reduce ventilation efficiency and reduce the blowing pressure of the fan. Losses often increase. Further, compared to the case where a heater or the like is attached to the ventilation device and the frozen condensed water is melted by the heater or the like, this method is advantageous because no external energy for heating is required.

Once the frozen condensation water has thawed, the fourth and fifth
As shown in the figure, ventilation is achieved by opening windows 13a and 16a and closing windows 13b and 16b.

A sensor that detects the thawing of frozen condensed water and a timer that starts the motor after a certain period of time after receiving a thawing signal from the sensor are connected to the motor 25, so that ventilation is automatically started. It is convenient to keep it.

In the ventilation system shown in FIGS. 2 to 7, even if the rooms 13 and 16 are arranged as shown in FIG. It can be implemented. As shown in the figure, rooms 13 and 16 have semi-circular windows (ventilation openings) 31a, 31b, 32a on the outside side (arrow A side) and on the inside side (arrow Bitll) with the bow facing upwards.
, 32b are provided, and inside are shafts 33, 34.
is placed horizontally. At both ends of the shaft 33, there are semicircular plates 3
3a and 33b are fixed so as to change their directions by 180 degrees, and semicircular plates 34a and 34a are also provided at both ends of the shaft 34.
34b (11) are fixed such that their directions are changed by 180° from each other. Semi-circular plates: (3a, 33b, 34a, 34b are the lids of the windows 31a, 31b, 32a, 32b (opening/closing doors). Motors such as stepping motors are installed in the intermediate parts of the shafts 33 and 34, respectively. 35 and 36 are arranged, and by rotating the shaft 33 (34) by 180 degrees with the motor 35 (36), the window 31a (32a) is opened and the window 3 l b (32b) is closed. (
32a) can be closed and the window 31b (32b) can be opened.

The lid (damper) that opens and closes the window may be operated by a drive means other than a stepping motor.

The ventilation method according to the present invention is not necessarily carried out using the ventilation device as described above. For example, as a heat exchange element, a heat exchange element (plate fin type heat exchanger), a shell tube type heat exchanger, etc. has a multi-layered ventilation passage, allowing supply air and exhaust air to pass through every other passage. It is also possible to use a ventilation system in which a heat exchanger or the like is arranged instead of a heat pipe. (12) Also, as in the above-mentioned fruitful example, it is not necessarily necessary to allow the warm air inside the door to pass from one door to the other through the unfrozen passage, but rather to prevent the cold air from outside from passing through. You may just do so.

In the ventilation systems shown in FIGS. 2 to 7, if the fan can be rotated in both forward and reverse directions, the cooling load can be reduced during summer cooling. That is, as shown in FIGS. 4 and 5, the window 13a of the room 13 and the window 16a of the room 16 are opened, and the fans 26 and 29 are rotated in the opposite direction to the winter season. The cold air inside the door is passed through rooms 15, 14.13 in this order, and the warm air inside the door is passed through rooms 16, 17.18 in that order. In this way, heat exchange takes place between the two types of air, so the cooling load can be reduced.

〔Effect of the invention〕

The ventilation method according to the present invention discharges indoor air from the indoor to the outdoor through one passage, and supplies outdoor air from the outdoor to the indoor through another passage. In a ventilation method that exchanges heat between air, when the exhaust passage freezes in the winter, the air inside the door passes through this passage from one door to the other, and the air supply passage passes the air inside the door. Since the air is passed from inside to the door or not allowed to pass through, the heat exchange efficiency of the Heat Vibe can be maintained at a high level even in extremely cold seasons.

[Brief explanation of drawings]

Figure 1 is a partially cutaway perspective view of a conventional ventilation system, and Figure 2 is a partially cutaway perspective view of a ventilation system used to implement the ventilation method according to the present invention. Figure 3 is a perspective view of the inside of the rear end of the ventilation system, Figures 4 to 7 are explanatory diagrams of the interior of the ventilation system, and Figure 8 1 is a perspective view of the inside of the rear end of the ventilation system. FIG. 3 is a perspective view of the inside of the rear end of the ventilation device. 13.14,15,16,17.18... Room 27
・・・Heat Vibe agent Patent attorney Takehiko Matsumoto (15) Yumiho Moe Taiho Seisho (Voluntary publication June 4, 1981 Japan 1 WO 59 enemy forgiveness'ffJWlf=0 1 2 4 1
No. 0 No. 2, Name of the invention Ventilation method 3, Relationship with the case of the person making the amendment Patent applicant address 1048 Kadoma, Kadoma City, Osaka Prefecture Name (5)
83) Matsushita Electric Works Co., Ltd. Representative Iku Kobayashi 4, Agent 6, Specification subject to amendment 7, Contents of amendment (1) Heat pipe 1 on page 3, line 11 of the specification ” between “(one example, the number is not limited to this)”
Insert. (2) In the 12th line of page 3 of the specification, the phrase "at the upper end and the lower end" is corrected to "at the upper end (condensing section) and at the lower end (evaporating section)." (3) From line 19 on page 3 of the specification to line 20 on the same page, the phrase "Aisle 4" is corrected to "Aisle 3." (4) On page 4, line 17 of the specification, the phrase "the heat pipe 5 extends to the lower end" is corrected to "the heat pipe 5 extends to the lower end of the exhaust air below the dew point." (5) Insert "(This is just an example, and the number is not limited to this)" between "two" and "arranged" on page 8, line 19 of the specification. (6) In the second line of page 9 of the specification, the phrase "at the lower end and the upper end" is corrected to "at the lower end (evaporation section) and at the upper end (condensation section)." (2)

Claims (4)

[Claims] (1) One passage exhausts the air inside the door from inside the door to the outside, and another passage supplies the outdoor air from the outside to the inside, while exchanging heat between the exhaust air and supply air. In the ventilation method used, when the exhaust passage freezes in winter, the air inside the door is passed through this passage from inside the door to the inside, and the air supply passage is used to pass the air inside the door from inside the door to the inside. Ventilation method characterized by allowing air to pass through or not allowing air to pass through. (2) The ventilation method according to claim 1, wherein heat exchange is performed using a heat vibrator. (3) Each of the two aisles has a window opening into the interior at one end, and an interior and exterior at the other end. The ventilation method according to claim 1 and 2, wherein the ventilation method has two windows each opening, and the passage is set during normal times and during thawing by switching between opening and closing of the two windows at the other end. (4) The ventilation method according to claim 3, wherein switching between opening and closing of the two windows is performed by the action of a damper and a stepping motor that operates the damper.