JP2009127921A - Cold taking-in system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To lessen load of an air conditioner or the like by taking outside air having even a little lower temperature into a room when it is hot such as in summer, to further lower the temperature by simply cooling the taken outside air without a large-scale apparatus for performing heat exchange such as pipe equipment and heat storage equipment, and to achieve satisfactory ventilation. <P>SOLUTION: An underfloor structure is air-tight, and a floor concrete 11 is formed in contact with the earth as a concrete foundation whose surface is exposed to the underfloor so that the underfloor is cooled by soil heat. A comparatively cold outside air outside of a building is introduced under the floor from an air inlet 34 penetrating through a wall 26 by a fan housed in a box 29, the temperature is lowered by contact with the surface of the floor concrete 11 cooled by the soil heat, and ventilation is performed by introducing comparatively low temperature air into the room by a floor supply opening 14. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a cooling system capable of surpassing heat such as summer by taking in outside air.

  Due to global warming, the average summer temperature is rising in Japan as well. On the other hand, it is a common practice to surpass the heat of summer with an air conditioner that is supported by electricity, but excessive use of the air conditioner is a large amount of energy consumption, and the phenomenon of global warming due to the energy crisis and carbon dioxide It is nothing but an encouragement.

  Incorporating air with a low temperature into the building reduces the burden on the air conditioner, but in recent years, the use of heat insulating materials makes the building highly insulated and airtight, making it difficult to take in outside air.

Various proposals have been made to reduce the temperature of the outside air taken into the building by applying underground heat, and the following patent document is an example.
Utility model registration No. 3032891 JP 2007-183023 A Utility model registration No. 2565742

  Patent Document 1 is capable of heat-exchanging the outdoor warm air in the summer with the cold in the ground, and heat-exchanging the outdoor cold in the winter with the heat in the ground to cool and heat the outer wall of the house, and can cool and heat the room indoors. It is an air conditioning system that uses geothermal heat in a house that does not require utility costs and can contribute to energy conservation. Both ends of the pipes face the outside and under the floor space, and heat exchange pipes are buried in the ground, and the outside air is used for heat exchange. Heat is exchanged with a pipe and introduced into the space under the floor.

  Further, in Patent Document 1, a heat insulating material is lined on the outer wall and the back surface of the roof so that the wall space communicates with the underfloor space and the attic space, and the outside air introduced by the heat exchange pipe is introduced indoors through the indoor air introduction pipe. Distribute, exhaust to the outside with the first exhaust fan in the attic space, distribute from the underfloor space to the wall space, suck the indoor circulation air with the second exhaust fan in the attic space and exhaust it outside the house Has also been done.

  Patent Document 2 is a geothermal air-conditioning method and apparatus that can store the heat of the outside air in the ground and can be effectively used for air-conditioning, and collects the heat of the outside air by the heat collecting part in the warm season. In the cold season, heat is stored in the first underground heat storage section, and heat is exchanged between the heat stored in the first underground heat storage section and the indoor air via the heat release section 4. The cold heat of the outside air is collected by the heat collecting part and stored in the second underground heat storage part in the ground, and the cold heat stored in the second underground heat storage part and the indoor air are passed through the heat release part. Heat exchange during the warm season.

  In Patent Document 3, a heat insulating material is stretched in the surface direction on the indoor side of the outer wall material and the roof material so that an inner ventilation layer communicating with the attic space is formed at least on the indoor side of the building, and in the lower floor portion. Is a communication pipe that can introduce outside air into the underfloor space, and a ridge ventilation port that can lead the air in the attic space to the outside is formed in the lower part of the building, and an open / close damper is provided for each of the communication pipe and the ventilation port. In the underfloor space, a cold storage heat member made of stones, rocks, cracked stones, blocks, bricks, etc. occupies 10 to 90% of the underfloor space, and a sufficient ventilation space between the cold storage heat members The cool storage heat member and the outside air in the underfloor space can be directly communicated with each other via a communication pipe disposed in the ground, and the communication pipe communicates with the communication pipe. Pipe open / close damper is provided There.

  In Patent Document 3, it is preferable that a fan that circulates air between the inner ventilation layer and the underfloor space is attached to the underfloor portion or the underfloor space, and the outside air temperature is, for example, in summer daytime. If it is high, close all ventilation openings and communication pipes, start the cooling system in each room, and start the underfloor fan, the cold heat stored in the cold storage heat storage member installed in the underfloor part or underfloor space at night However, the fan exchanges heat with the air circulating in the inner ventilation layer, the attic space, and the underfloor space, lowers the temperature around the room, and assists the cooling effect of the cooling device in each room.

  Also, when the outside air temperature is relatively low, such as during summer nights, open all the ventilation openings and communication pipe dampers, start the fan, take outside air into the underfloor space from the underfloor ventilation openings, and It leads to the inner ventilation layer through the gap between the cold storage heat members, and discharges to the outside of the building through the attic space and the ventilation opening under the building. As a result, the hot air in the attic is discharged to the outside, the relatively low temperature outside air is guided to each room and the inner ventilation layer, and the inside of the building is cooled using natural energy. At the same time, the nighttime cold energy is stored in the cold energy storage block or the cold energy storage member and used for daytime cooling.

  As a method of taking outside air having a relatively low temperature in this way and using it for cooling, heat is stored in this heat storage part by cooling and taking in heat by exchanging with geothermal heat, or by storing cold air from the outside air. For example, heat exchange is performed between the cold heat and the indoor air through a heat release unit, and in either case, a process called heat exchange is often performed.

  On the other hand, old Japanese houses have no walls. There were doors, fences, and shoji screens, which had only partitions to separate the rooms, and were devised to capture the seasonal environment from nature to make life easier. First of all, the house was partitioned so that air would circulate so as not to accumulate heat. In order to avoid direct sunlight in the daytime, it is against nature such as placing a kite under the eaves, watering in the morning to cool the air, and placing icicles in a place where the air passes in the house. I've been cool, so

  This circulation of air between the outside and the room led to taking “cool”, and for ventilation air, sufficient ventilation air flows into the building due to natural leakage through the gap. It was supposed to be normal.

  However, in recent years, the emergence of highly heat-insulated and air-tight buildings by using heat insulating materials has difficulty in taking in outside air because there are few such gaps, and it is necessary to actively carry out ventilation.

  According to the revised Building Standards Act, the ventilation of a building (0.5 times per hour, [volume of the building (called volume))] required for living a healthy life is once every two hours. To replace the air). In order to satisfy the above-mentioned ventilation, mechanical ventilation equipment is installed and ventilation is performed for 24 hours. For this purpose, planned ventilation and air flow must be created.

  The object of the present invention is to take such circumstances into consideration, and when it is hot such as in summer, it is possible to reduce the load of the air conditioner and the like by introducing outside air having a low temperature into the room as much as possible. To provide a cooling system that can be easily cooled to lower the temperature without using a large-scale device that performs heat exchange such as facilities and heat storage facilities, and that provides sufficient ventilation. It is in.

  In order to achieve the above object, the present invention according to claim 1 and claim 2 is that the floor has an airtight structure, and a concrete foundation having a surface exposed under the floor is formed in contact with the ground to generate ground heat. Air that is relatively cold outside of the building is introduced into the floor with a fan housed in a box from the air inlet through the wall and brought into contact with the concrete foundation surface cooled by the underground heat. , And ventilating by introducing relatively cool air from the floor outlet into the room, and the relatively cool outside air outside the building is the north side of the building, where the solar radiation is shielded by the roof, fence or hut, Or it makes it a summary to select either by the cold heat disposal of a heat exchange apparatus, or a combination.

  According to the first aspect of the present invention, first, a relatively cool shaded outside air outside the building is taken in to obtain coolness, and further, this air is cooled by underground heat. The temperature of the air conditioner can be reduced by bringing the air into a relatively low temperature by bringing it into contact with the base surface and introducing it into the room through the floor outlet. In addition, if this is a solid foundation, a wide surface area can be secured as soil concrete, and the contact area with the ground and the contact area for cooling the air can be widened.

  Moreover, what is called push-in type ventilation is obtained by introducing the taken-out outside air into a room as it is.

  In addition, outside air is introduced into the floor by a fan housed in a box from the air inlet through the wall, and the air inlet as the outside air inlet is separated from the ground surface, so it is less likely to take in dust and insects. Because of the wall penetration construction, construction after construction is possible, and it can also be used for existing properties.

  The gist of the present invention described in claim 2 is that the fan is housed in a box installed on the floor, and a damper that opens and closes the air supply opening and a filter that is installed on the windward side of the fan are disposed in the box. To do.

  According to the second aspect of the present invention, the fan is housed in a box installed on the floor, so that the filter can be easily maintained and maintained. If a sirocco fan is used as the fan, a stable air volume can be secured and noise can be reduced as compared with the case where a pipe fan is used.

  The gist of the present invention described in claim 3 is to reduce the radiant heat from the ceiling by cooling the roof by taking outside air from the eaves into the roof air layer.

  According to the third aspect of the present invention, in addition to the effect of the first aspect of obtaining coolness by further cooling and taking in relatively cool shaded outside air outside the building, this intake is introduced into the room from the floor outlet. In the case of taking in, the use of the roof cooling can suppress the rise in the indoor temperature and make the effect more reliable. In addition, since this roof cooling uses outside air, it can be used in combination.

  The gist of the present invention described in claim 4 is to exhaust the heat reservoir in the upper part of the room by providing an exhaust port near the ceiling.

  According to the fourth aspect of the present invention, in addition to the effect of the first aspect of obtaining coolness by further cooling and taking in relatively cool shaded outside air outside the building, this intake is introduced into the room from the floor outlet. When taking it in, the efficiency of ensuring “cool” can be increased by exhausting the air that has been warmed and accumulated near the ceiling.

  As described above, the cooling system of the present invention can reduce the load on the air conditioner by taking outside air with a low temperature into the room when it is hot, such as in summer, and the outside air to be taken in can be connected to pipe facilities and heat storage. Without using a large-scale device for exchanging heat, such as equipment, it can be cooled easily and the temperature can be further lowered, and ventilation can be sufficient.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a longitudinal front view showing an embodiment of the cooling system according to the present invention, which is a building that has been devised on the underfloor foundation and roof.

  First, from the roof, the air flow path 2 having a roof gradient is formed immediately below the roof plate 1 such as a color iron plate or a slate plate. One end of the air flow path 2 is opened as an air intake 3 at the eaves, and the other end is communicated outdoors by an exhaust duct 9. In the example shown in the figure, the front part of the exhaust duct 9 is raised as a chimney 18 on the roof.

  Between the air flow path 2 and the exhaust duct 9, a ridge duct 4 as a heat collection box made of heat insulating material and a fan 7 are provided. The fan 7 is provided with a backflow prevention damper 6 and a flow path switching damper 8. It shall be installed in the handling box 5.

  Further, in the handling box 5, a hot water take-off coil 15 is provided between the backflow prevention damper 6 and the fan 7, and the hot water take-off coil 15 is connected to a hot water storage tank 17 by a circulation pipe 16, which is not shown. The hot water storage tank 17 is provided with a hot water supply boiler for reheating and connected to a hot water supply pipe connected to a bath, a washroom, and a kitchen.

  The handling box 5 is installed in the attic 22 which is an attic space. The inflow side of the backflow prevention damper 6 of the handling box 5 is connected to the ridge duct 4 and one of the outflow side of the flow path switching damper 8 is connected. Connected to the upper end of the falling duct 10.

  In the figure, 19 is glass, and a part of the roof plate 1 is covered with this transparent glass 19.

  In the figure, reference numeral 12 denotes a floor panel. Under the floor, soil concrete 11 as a concrete foundation that forms a solid foundation type fabric foundation is constructed with a thickness of about 100 to 150 mm, and the surroundings are set up as a foundation rise 20. The soil concrete 11 is formed so that the outer periphery is in direct contact with the ground, and this is cooled by underground heat.

  In the present invention, the airtightness under the floor is important. An airtight packing 25 is interposed between the foundation rise 20 and the base 21 placed thereon to ensure airtightness, and the underfloor space surrounded by the soil concrete 11, the floor panel 12, the base 21, and the wall 26 is airtight. In this way, air leakage is blocked from the underfloor air layer.

  Further, a space between the soil concrete 11 and the floor panel 12 is formed as an air circulation space 13, and a floor outlet 14 from the air circulation space 13 to the room is provided at a predetermined point of the air circulation space 13.

  The present invention lowers the temperature by taking the relatively cold shaded outside air on the north side of the building and bringing it into contact with the surface of the soil concrete 11 as the relatively cold shaded outside air outside the building under such an airtight structure. Ventilation is performed by introducing relatively cool air into the room from the air outlet.

  As a relatively cool shade outside air outside the building, in addition to the relatively cool shade outside air on the north side of the building, it is taken in from here as a place where the sunlight is shielded by a roof, a fence 39 or a hut as shown in FIG. It is also possible.

  Furthermore, although illustration is omitted, when heat exchange equipment such as a heat pump water heater is installed, it is also possible to use the cold waste air, and the relatively cold shaded outdoor air and roof on the north side of these buildings In the case where the outside air to be taken in from here or the heat exchange device is installed as a place where the solar radiation is shielded by the ridge 39 or the hut, the outside air by the cold waste air can be selected by combining any one or a plurality thereof.

  As a structure for sending the outside air into the underfloor space, a wall 26 slightly above the floor is penetrated by a UV tube 27, a round pipe hood is attached to the outdoor opening of the UV tube 27 to form an air supply port 34, and the UV tube 27 The outdoor opening was placed on a floor in a stainless steel box 29 containing a fan 28 and connected to this box 29.

  A sirocco fan was used as the fan 28, and a damper 30 for opening and closing the air supply port 34 and a filter 31 installed on the windward side of the fan 28 were disposed in the box 29.

  If such a sirocco fan is used, a stable air volume can be secured and noise can be reduced as compared with the case where a pipe fan is used, but it does not hinder the use of the pipe fan and propeller fan.

  The leeward side of the fan 28 of the box 29 is opened below the floor with a UV tube 32 and is blown directly onto the surface of the soil concrete 11 with a predetermined wind speed.

  The damper 30 is automatically opened and closed by the damper motor 30a. When the switch is turned on by the control of the timer relay, the damper motor 30a is activated and the damper 30 is opened, and when the damper motor 30a is fully opened, the damper motor 30a is stopped. Then, the fan 28 is operated to blow outside air under the floor.

  When the switch is turned OFF, the fan 28 is stopped, the damper motor 30a is operated, the power is turned off after the damper 30 is closed.

  The front cover 29a of the box 29 is fixed with a magnet so that it can be opened and closed, and the maintenance of the filter 31 is performed by removing the front cover 29a.

  The lower end of the falling duct 10 connected to one of the outflow sides of the flow path switching damper 8 also opens to the air circulation space 13 between the soil concrete 11 and the floor panel 12 under the floor, and the floor outlet to the room 14 is a distance from the opening of the falling duct 10 and the opening on the leeward side of the fan 28 of the box 29 so that the soil concrete 11 in the air circulation space 13 between them can be as long as possible.

  Exhaust ports 33 by natural or exhaust fans are provided in the vicinity of the ceiling, for example, the attic 22 which is an attic space.

  Next, the usage will be described. The cooling system of the present invention operates when it is hot such as in summer. During the day, the soil concrete 11 is formed in direct contact with the ground and cooled by underground heat. In addition, it is cooled by underground heat at night, and the cooling heat is also stored.

  The fan 28 of the box 29 is driven, and the relatively cold shaded outdoor air on the north side of the building is introduced under the floor through the air inlet 34 through the wall and is brought into contact with the surface of the soil concrete 11 cooled by the underground heat. To lower the temperature.

  The underfloor is airtight, and by introducing outside air in this way, it becomes push ventilation, and by introducing relatively low temperature air from the floor outlet 14 into the room, indoor ventilation is pushed in. .

  Although illustration is omitted, there is an air conditioner in the room, and this is still cooled, but the load of the air conditioner can be reduced by introducing relatively low temperature air into the room as described above.

  On the other hand, when the fan 7 in the handling box 5 is driven, suction acts on the air flow path 2 below the roof plate 1, and the roof plate 1, which is a metal plate heated by sunlight, is applied to the air flow path at the roof portion. The outside air entering 2 is warmed, and this warmed air rises along the roof slope.

  Then, if the falling duct 10 side which is one of the outflow sides is closed by the flow path switching damper 8 and the exhaust duct 9 side which is the other one of the outflow sides is opened, the heated air heated by the roof plate 1 is Heated air from the handling box 5 is thrown outside through the exhaust duct 9 and so-called roof cooling is performed. The heated air passes through the handling box 5 to heat the hot water collecting coil 15, so that hot water can be obtained using solar heat even at high temperatures such as in summer.

  Radiation heat from the ceiling can be reduced by taking outside air into the air flow path 2 that is the roof air layer from the air intake 3 at the eaves to cool the roof.

  In the room, hot air tends to accumulate near the ceiling. However, by exhausting the heat accumulation in the upper part of the room from the exhaust port 33 near the ceiling, it is possible to suppress the rise of indoor air.

  FIG. 11 shows the result of a test conducted to confirm the effect of the present invention. The temperature of the outside air, the temperature of the floor outlet 14, the temperature of the room (the property of the present invention), the temperature of the room (normal property) Is a graph.

  According to this, at the end of August, a difference of 1 ° C. or more could be seen between the indoor temperature (the property of the present invention) and the indoor temperature (normal property).

  The feature of the present invention resides in that the installation can be performed only by installing the box 29 containing the fan 28 on the floor. As shown in FIGS. 2 and 3, a UV tube 27 is attached through the wall 26, a UV tube 32 is attached through the floor panel 12, and a box 29 may be connected thereto.

  FIG. 5 is a comparison with a case where an opening 35 is formed in the foundation rising 20, a box 38 is made of heat insulating material, and a pipe fan 37 and an underfloor ventilation opening with a heat insulating damper 36 are attached (left side in FIG. 5). It is necessary to go outside and change the damper manually.Because the pipe fan is adopted, the airflow is not so good that the airtightness is good, the outside air inlet is close to the ground surface, so it incorporates a lot of dust, insects and moisture In other words, there is a problem that insects may propagate in the box 38.

  In the present invention, the damper motor 30a can be used to switch the damper 30 with a switch, and the sirocco fan can be used to ensure a stable air volume and reduce noise.

  Since the filter 31 is built in with the outside air introduction opening away from the ground surface, it is less likely to take in dust and insects.

  Since it is installed on the floor, it is easy to care for and maintain the filter 31, and it is possible to perform post-construction because of the construction through the wall, and it can be used for existing properties.

  Although the above is the summer, the building of this embodiment is configured as a solar system house that can be heated by sunlight in winter or the like.

  In winter, the roof plate 1, which is a metal plate heated by sunlight, warms the outside air entering the air flow path 2, and the warmed air rises along the roof gradient. The glass 19 has a role of eliminating the influence of wind on the roof plate 1.

  The heated air is collected in the building duct 4 and then enters the handling box 5 by the fan 7 and flows down from the handling box 5 through the falling duct 10, and air flows between the thermal storage soil concrete 11 and the floor panel 12. Enter space 13.

  In this air circulation space 13, heated air directly warms under the floor via the floor panel 12, stores heat in the soil concrete 11, and is blown directly into the room as warm air from the floor outlet 14. Heating is performed by performing three heating operations.

  As described above, the soil concrete 11 is used for both cooling and heating, and the air layer under the roof is used for cooling the roof and heating the air, so that the building is suitable for both cooling and heating.

  In the above embodiment, the box 29 is a single box, and the fan 28, the damper 30 for opening and closing the air supply port 34, and the filter 31 installed on the windward side of the fan 28 are disposed therein. It is also possible to place them in separate boxes and separate the boxes.

  The box 29 may be a vertical type in which the storage portion of the fan 28 and the storage portion of the damper 30 are arranged vertically.

  Further, as shown in FIG. 14, an air supply port 40 from the room is formed in the box 29 so that the damper 30 can not only open and close the air supply port 34 but also simultaneously open and close the air supply port 40, Since the damper 30 is positioned between the air supply port 34 and the air supply port 40, intake of room air can be mixed with intake of outside air. This is to compensate for either one of the airflow pressure losses. The amount of air taken in through the air supply port 34 and the air supply port 40 can be adjusted by the position of the damper 30.

  Further, as another embodiment, instead of blowing out from the floor outlet 14, the duct may be guided to the back of the ceiling and the introduced relatively low temperature air may be introduced into the room. Although it is conceivable to install a unique duct in this case, the falling duct 10 is used in FIG.

  An air supply port 41 is formed in the handling box 5, and the intake outside air that raises the falling duct 10 can be ejected from the air supply port 41.

  In this case, the fan 7 is reversed to act as an air supply fan, and a suction force is applied to the falling duct 10.

  The air supply port 41 can be closed by the backflow prevention damper 6.

It is a vertical front view which shows 1st Embodiment of the cooling system of this invention. It is a vertical front view of the principal part under construction which shows 1st Embodiment of the cooling system of this invention. It is a vertical front view of the principal part after construction which shows 1st Embodiment of the cooling system of this invention. It is a perspective view of the principal part which shows 1st Embodiment of the cooling system of this invention. It is explanatory drawing which shows the comparison with the cooling system of this invention, and another example. It is a front view of the box which has arrange | positioned the fan. It is a top view of the box which has arrange | positioned the fan. It is a side view of the box which has arrange | positioned the fan. It is a rear view of the box which has arrange | positioned the fan. It is a front view of the state which removed the front cover of the box which has arrange | positioned the fan. It is a temperature change graph which shows the effect test of this invention. It is a vertical front view of the principal part which shows 2nd Embodiment of the cooling system of this invention. It is a vertical front view which shows 3rd Embodiment of the cooling system of this invention. It is a perspective view of the principal part which shows 4th Embodiment of the cooling system of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Roof board 2 ... Air flow path 3 ... Air intake 4 ... Wing duct 5 ... Handling box 6 ... Backflow prevention damper 7 ... Fan 8 ... Flow path switching damper 9 ... Exhaust duct 10 ... Falling duct 11 ... Soil concrete 12 ... floor panel 13 ... air circulation space 14 ... floor outlet 15 ... hot water coil 16 ... circulation pipe 17 ... hot water tank 18 ... chimney 19 ... glass 20 ... foundation rise 21 ... foundation 22 ... hut back 23 ... auxiliary heating coil 24 ... Heating / additional boiler 25 ... Airtight packing 26 ... Wall 27 ... UV tube 28 ... Fan 29 ... Box 29a ... Front cover 30 ... Damper 30a ... Damper motor 31 ... Filter 32 ... UV tube 33 ... Exhaust port 34 ... Air supply port 35 ... Opening 36 ... Insulation damper 37 ... Pipe fan 38 ... Box 39 ... Roof and fence 40 ... Air supply port 41 ... Air supply port

Claims (5)

  The underfloor is of an airtight structure, and a concrete foundation with an exposed surface under the floor is formed in contact with the ground to be cooled by underground heat, and relatively cold outside air outside the building is supplied through the wall. It is introduced under the floor with a fan housed in a box from the air mouth, brought into contact with the concrete foundation surface cooled by the underground heat, the temperature is lowered, and relatively cold air is introduced into the room from the floor outlet. A cooling system characterized by ventilation.   2. The cooling system according to claim 1, wherein the relatively cool outside air outside the building is selected by any one or a combination of the north side of the building, a place where the solar radiation is shielded by a roof, a fence or a hut, or the cooling heat disposal of the heat exchange equipment.   The cooling system according to claim 1 or 2, wherein the fan is housed in a box installed on the floor, and a damper for opening and closing the air supply port and a filter installed on the windward side of the fan are arranged in the box.   The cooling system according to any one of claims 1 to 3, wherein radiant heat from the ceiling is reduced by taking outside air from the eaves into the roof air layer to cool the roof.   The cooling system according to any one of claims 1 to 4, wherein an exhaust port is provided in the vicinity of the ceiling to exhaust the heat reservoir in the upper part of the room.

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