JP2007100437A - Double window ventilation system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a double window ventilation system having no need for increasing the load capacity of an indoor air-conditioner, having a simple construction free from the need of using such a complex construction as switching to the ventilation route to double window spaces, etc. or providing the openings for the ventilation route through floor slabs. <P>SOLUTION: The double-window ventilation system for ventilating a double-window space 18 between the external and internal glasses of a double window 16 comprises the external glass 12 and internal glass 14 with a space provided between them installed at the outside or inside of a building 10. The system is equipped with a heat exchanger 32 installed on the same floor as ventilated double windows for making heat exchanges between outdoor and indoor airs for them, an indoor air supply duct 40 for supplying the double-window spaces with indoor air after its heat exchange with outdoor air was done by the heat exchanger, and an air exhaust opening 28 installed on the same floor as ventilated double windows for discharging the air supplied in these double window spaces to outside the building. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a ventilation system for ventilating double windows.

  2. Description of the Related Art Conventionally, in order to enhance heat insulation and sound insulation in a building window, a double window having a configuration in which an outer window and an inner window are provided at intervals inside and outside the building has been used. According to such a double window, the space between the outer window and the inner window (hereinafter referred to as a double window space) functions as a heat insulation layer / sound insulation layer, so that the heat insulation / sound insulation performance can be improved. However, for example, when the outdoor air temperature is high and the solar radiation is strong, such as in summer, the temperature in the double window space becomes considerably high due to the blinds installed in the double window space being heated by the solar radiation. And if the temperature in double window space rises in this way, the temperature near the window in a room will also rise in connection with it and indoor comfort will be impaired. In order to solve such a problem, various systems have been conventionally proposed in which ventilation is performed in a double window space, as described in Patent Documents 1 to 5, for example.

  In Patent Document 1, vents are provided in the upper and lower portions of both indoor and outdoor window glasses constituting a double window, and these vents are selectively opened and closed according to the season to vent the double window space. The structure which performs is disclosed. Also, in Patent Document 2, similarly to Patent Document 1, vents are provided in the upper and lower portions of both glass windows, respectively, and these vents are provided according to the temperature of the outdoor, indoor, and double window spaces. The structure which ventilates to double window space by opening and closing suitably is disclosed.

  In Patent Document 3, a guide cover is provided at an intake port that guides indoor air to the double window space, and the air flow supplied to the double window space is guided along the indoor window glass. A configuration is disclosed in which the temperature on the inner window side is kept low by separating it from the upward flow of air along the outer window glass.

  In Patent Document 4, an exhaust passage communicating with the double window space is formed at a predetermined location of the floor slab, and a heat exchanger for exchanging heat between indoor air and outdoor air is provided in the lower level, The structure which exhausts the exhaust_gas | exhaustion exhausted through a heat exchanger to the outdoors through the double window space of an upper hierarchy from the said exhaust passage is disclosed.

Patent Document 5 discloses a configuration in which indoor air is supplied to a double window space, the indoor air that has passed through the double window space is heat-exchanged with outdoor air in a heat exchanger, and then discharged to the outside. ing.
JP 2002-256737 A Japanese Patent Publication No. 3-15103 JP 2005-90187 A JP 2003-106598 A Japanese Utility Model Publication No. 63-153043

  However, the configuration disclosed in each of the above patent documents has the following problems.

  The configurations disclosed in Patent Document 1 and Patent Document 2 require a mechanism for switching the vent according to the season or temperature, which is complicated and increases the cost.

  In addition, as disclosed in Patent Document 3, in the configuration in which room air is directly discharged to the double window space, it is necessary to supply the amount of air discharged to the double window space from the outside to the inside. For this reason, outdoor air with a high temperature is supplied indoors in the summer, and outdoor air with a low temperature is introduced indoors in the winter, and the load of the air conditioner for cooling and heating increases.

  Further, as disclosed in Patent Document 4, in the configuration in which the double window space and the lower floor exhaust space are communicated with each other, it is necessary to provide an opening in the floor slab. However, floor slabs serve as fire prevention compartments to prevent the spread of fire and smoke diffusion in buildings, and measures to maintain the function as fire prevention compartments when openings are provided in such floor slabs It is necessary to take measures, and the cost increases.

  In addition, as disclosed in Patent Document 5, indoor air passes through the double window space in summer in the configuration in which the indoor air is passed through the double window space and then heat exchange is performed with the outdoor air using a heat exchanger. In the process, the temperature will rise. For this reason, the temperature difference between the indoor air and the outdoor air that are heat-exchanged by the heat exchanger is reduced, and the heat exchange efficiency in the heat exchanger is reduced. As a result, in summer, the temperature of the outdoor air is supplied indoors without being sufficiently lowered by heat exchange, which increases the load on the air conditioner.

  The present invention has been made in view of the above points, and it is necessary to use a complicated configuration such as switching the ventilation path to the double window space, or to provide an opening for the ventilation path in the floor slab. An object of the present invention is to provide a double window ventilation system that can ventilate a double window space while suppressing an increase in the load of an indoor air conditioner with a simple configuration.

In order to achieve the above-mentioned object, the present invention provides a double window between the outer window and the inner window in a double window comprising an outer window and an inner window provided at intervals inside and outside the building. A double window ventilation system for venting into space,
A heat exchanger that is installed at the same level as the double window and exchanges heat between outdoor air and indoor air;
An air supply means for supplying indoor air after heat exchange with outdoor air by the heat exchanger to the double window space;
It is installed in the same hierarchy as the double window, and is provided with an exhaust port for discharging the air supplied into the double window space to the outside.

  According to the present invention, the outdoor air and the indoor air are subjected to heat exchange, and the outdoor air after the heat exchange is supplied indoors, and the indoor air after the heat exchange is ventilated into the double window space. For example, the temperature of indoor air rises when passing through a double window space in summer, and the temperature decreases when it passes through a double window space in winter. Since the indoor air and the outdoor air are heat exchanged before the temperature of the indoor air rises or falls, the temperature of the outdoor air supplied to the indoor can be lowered efficiently, thereby reducing the load on the air conditioner It becomes possible. In addition, since the exhaust from the heat exchanger is vented to the double window space regardless of the season, a complicated structure such as switching the ventilation path is unnecessary, and the ventilation system of the present invention can be realized with a simple configuration. Further, since the heat exchanger and the exhaust port from the double window space are provided at the same level as the double window, the ventilation path to the double window space does not straddle between the building levels, and therefore the ventilation It is not necessary to provide an opening in the floor slab to provide a path.

  In the present invention, the heat exchanger may be a total heat exchanger capable of simultaneously exchanging both sensible heat (temperature) and latent heat (humidity). In this way, indoor air is dehumidified by the total heat exchanger and supplied to the double window space even when indoor air is warmer and higher in humidity than outdoor air, such as in winter. Therefore, it is possible to suppress the occurrence of condensation on the inner surface of the outer window. In addition, in the summer when the outdoor is hot and humid, the outdoor air is dehumidified by exchanging latent heat (humidity) with the indoor air and supplied indoors. it can.

  According to the present invention, an indoor air conditioner with a simple configuration that does not require a complicated configuration such as switching the ventilation path to the double window space or providing an opening for the ventilation path in the floor slab. Thus, it is possible to provide a double window ventilation system capable of ventilating the double window space while suppressing an increase in the load of the double window.

  Moreover, by using a total heat exchanger as a heat exchanger, it can suppress that dew condensation arises inside an outer window in winter.

  Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is a schematic longitudinal sectional view of a building in which a double window ventilation system according to an embodiment of the present invention is installed, and FIG. 2 shows the air supplied to the double window space in the present embodiment outdoors. It is a longitudinal cross-sectional view which shows the detailed structure of the exhaust port which discharges | emits.

  As shown in FIG. 1, the building 10 is provided with a double window 16 in which an outer glass 12 and an inner glass 14 are installed indoors and outdoors at a distance. The outer glass 12 and the inner glass 14 correspond to the outer window and the inner window of the present invention, respectively. A double window space 18 is defined between the outer glass 12 and the inner glass 14, and a blind 20 is installed in the double window space 18. The blind 20 can be opened and closed manually or electrically. The inner glass 14 may be a shoji window that can be opened and closed as long as it is an air tight structure. The outer glass 12 and the inner glass 14 are made of a light-transmitting material such as a reinforced plastic or a light-transmitting stone. It may be. In addition, an air conditioner 22 is installed in the building 10. The air conditioner 22 appropriately adjusts the temperature and humidity of the indoor air of the building 10.

  An air supply port 24 for supplying air to the double window space 18 is provided above the double window space 18. In the present embodiment, an air supply port is provided in the blind box 26 for housing the blind 20. In addition, an exhaust port 28 for discharging the air supplied to the double window space 18 to the outside is provided at the lower portion of the sash that supports the outer glass 12. As shown in FIG. 2, in this embodiment, the partition plate 30 is provided in the exhaust port 28, and the communication path between the double window space 18 and the outdoors is bent. Thereby, it is possible to prevent rainwater from entering the double window space 18 from outside and birds and the like from entering.

  A heat exchanger 32 is provided in the ceiling space of the floor where the double windows 16 are installed. An outdoor air intake duct 34, an indoor air intake duct 36, an outdoor air supply duct 38, and an indoor air supply duct 40 are connected to the heat exchanger 32. The outdoor air intake duct 34 supplies outdoor air taken in from an outdoor air inlet 42 provided on the outer wall of the building to the heat exchanger 32, while the indoor air intake duct 36 is indicated by an arrow B, as indicated by an arrow A. As shown, the indoor air taken in from the indoor exhaust port 44 provided in the indoor ceiling is supplied to the heat exchanger 32. The heat exchanger 32 exchanges heat between the outdoor air and the indoor air, and supplies the outdoor air after the heat exchange to the indoor through the outdoor air supply duct 38 to the indoor as indicated by an arrow C. At the same time, as indicated by an arrow D, the indoor air after the heat exchange is supplied to the double window space 18 through the indoor air supply duct 40.

  In the present embodiment, a total heat exchanger is used as the heat exchanger 32. The total heat exchanger is a heat exchanger capable of exchanging not only sensible heat (temperature) but also latent heat (humidity). Therefore, by using a total heat exchanger as the heat exchanger 32, both sensible heat and latent heat can be exchanged between the outdoor air and the indoor air, so that the indoor air is warmer than the outdoor air as in winter. When the humidity is high, the heated indoor air can be dehumidified by the heat exchanger 32 and supplied to the double window space 18.

  As described above, in this embodiment, the indoor air is exchanged with the outdoor air by the heat exchanger 32 and then supplied to the double window space 18 of the double window 16. For this reason, even if the blind 20 installed in the double window space 18 becomes hot due to solar radiation in summer or the like, the temperature rise of the double window space 18 is suppressed by the ventilation to the double window space 18. In summer, hot outdoor air is cooled and exchanged indoors with cool indoor air, and in winter, cold outdoor air is warmed up by exchanging heat with warm indoor air. Therefore, the air conditioning load of the air conditioner 22 that performs indoor air conditioning can be reduced.

  Further, as described above, in the present embodiment, since the total heat exchanger capable of exchanging both sensible heat and latent heat is used as the heat exchanger 32, indoor air is more than outdoor air as in winter. Even when warm and humid, the room air is dehumidified by the heat exchanger 32 and supplied to the double window space 18 of the double window 16. For this reason, the dew point temperature of the air in the double window space 18 is lowered, and the occurrence of dew condensation on the inner surface of the outer glass 12 can be suppressed. In addition, in the summer when the outdoor is hot and humid, the outdoor air is dehumidified by exchanging latent heat (humidity) with the indoor air and supplied indoors. it can.

  However, it is not essential in the present invention to use a total heat exchanger as the heat exchanger 32. When the total heat exchanger is not used, for example, the air before being supplied to the double window space 18 is silica gel or the like. It is also possible to prevent dew condensation of the outer glass 12 in winter by dehumidifying with the moisture absorbent.

  Moreover, in this embodiment, the heat exchanger 32 is installed in the same hierarchy about a certain level of the building 10, and the indoor air subjected to the heat exchange is supplied to the double window space 18 of the double window 16 in the same level to be outdoors. Therefore, it is not necessary to provide an air passage so as to penetrate through the slabs of each level of the building 10.

  In the above embodiment, the heat exchanger 32 is installed in the ceiling space, and the heat-exchanged indoor air is supplied to the double window space 18 of the double window 16 from the upper part and discharged from the lower part to the outdoors. However, the present invention is not limited to this, and when the floor slab 48 has a predetermined space between a floor such as a double floor and the slab, a heat exchanger 32 is installed in the space under the floor, and after the heat exchange The indoor air may be supplied to the double window space 18 of the double window 16 from the lower part and discharged from the upper part to the outdoors.

It is a schematic longitudinal cross-sectional view of the building which has the hierarchy in which the air conditioning system which is one Embodiment of this invention was installed. The exhaust port disposed in the air chamber provided between the double partition plate for partitioning the inside and outside of the building and the building body part for fixing the partition plate provided in this embodiment. It is an enlarged vertical sectional view.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Building 12 Outer glass 14 Inner glass 16 Double window 18 Double window space 20 Blind 22 Air conditioner 24 Air supply port 26 Blind box 28 Exhaust port 30 Partition plate 32 Heat exchanger 34 Outdoor air intake duct 36 Indoor air intake duct 38 Outdoor air supply duct 40 Indoor air supply duct 42 Outdoor intake port 44 Indoor exhaust port 46 Indoor air supply port 48 Floor slab

Claims (4)

A double window ventilation system for ventilating a double window space between the outer window and the inner window in a double window composed of an outer window and an inner window spaced apart from each other inside and outside the building. Because
A heat exchanger that is installed at the same level as the double window and exchanges heat between outdoor air and indoor air;
An air supply means for supplying indoor air after heat exchange with outdoor air by the heat exchanger to the double window space;
An air vent system for a double window, comprising: an exhaust port that is installed at the same level as the double window and exhausts the air supplied into the double window space to the outside.   2. The air conditioning system for buildings according to claim 1, wherein the heat exchanger is a total heat exchanger.   The heat exchanger is provided in a ceiling space, indoor air after heat exchange by the heat exchanger is supplied to the double window space from above, and the exhaust port is provided in a lower part of the double window space. The double window ventilation system according to claim 1 or 2, wherein the ventilation system is a double window ventilation system. The heat exchanger is provided in an underfloor space, and the air supply means supplies indoor air after heat exchange by the heat exchanger to the double window space from below, and the exhaust port has the double air outlet. The double window ventilation system according to claim 1 or 2, wherein the ventilation system is provided in an upper part of the window space.

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