JP2008002770A - Device for planar air-conditioning - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To realize planar air-conditioning (planar heating or planar cooling) by a simple structure, to suppress running costs, and to resolve a temperature difference between residential floors. <P>SOLUTION: In the device for planar air-conditioning, a heat exchange fluid is supplied to an air-conditioning piping 10 arranged in at least one of walls, floors, or ceilings. It is provided with: a buried tank 20 buried in the premises, a water temperature controller 27 adjusting a stored water temperature of the buried tank; a spiral pipe 30 arranged in an interior of the buried tank; and a pump device 31 driving circulation of the heat exchange fluid. By carrying out temperature control of a heating medium or a coolant supplied to the air-conditioning piping 10 via the spiral pipe arranged in the buried tank, switching is easily carried out between heating during heating, and cooling during cooling. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to surface air conditioning that provides a wall or floor surface of a building with a cooling / heating function, and more particularly, to temperature control of a heat exchange fluid that flows into piping provided on the wall or floor surface.

  There is a surface heating technique for warming an indoor space by supplying hot water to pipes arranged on walls, floors, and ceilings (for example, Patent Document 1 and Patent Document 2 below). The technology that warms the floor in surface heating is a heating structure that has been used for a long time in other countries.

As a heat source for hot water supplied to pipes arranged on walls, floors, and ceilings, recently, midnight power is used (for example, Patent Document 3) or a water heater is used (for example, Patent Document 2).
JP 11-118165 A JP2004-163051 etc. JP-A-10-288398

  Such surface heating technology may be diverted to cooling. The problem is as follows.

  First, when heating and cooling are switched according to the season, switching between cooling and heating is difficult with the conventional hot water supply method.

  This is because the conventional surface heating is a structure that only needs to be able to supply hot water, so that refrigerant cannot be supplied to pipes arranged on walls, floors, ceilings, and the like. If a switching valve is used, hot water and refrigerant can be switched and supplied, but even if a cooling medium whose temperature is controlled directly using a water heater or cooler is sent, it can be used on the nearest lower floor (or upper floor). Since the amount of heat exchange becomes inevitably large, air conditioning in a living space on a distant floor tends to be insufficient.

  Secondly, in order to solve such problems, if the size of the water heater that directly heats the heating medium or the device that directly cools the refrigerant (cooler) is increased, running costs and maintenance costs will increase. However, the living space on the nearest floor causes problems such as being too cold or too hot.

  Therefore, an object of the present invention is to suppress running costs and maintenance costs by realizing surface air conditioning (surface heating or surface cooling) with a simpler structure, and to eliminate temperature differences due to residential floors. Moreover, the excess heating of warm water is used effectively.

  In order to achieve the above object, a surface air-conditioning apparatus according to the present invention is a surface air-conditioning apparatus that supplies a heat exchange fluid to an air-conditioning pipe disposed on at least one of a wall, a floor, and a ceiling. The buried tank, the water temperature control device for adjusting the storage temperature of the buried tank, the spiral pipe disposed inside the buried tank, and the heat of the circulation path connecting the spiral pipe and the air conditioning pipe And a pump device for circulatingly driving the exchange fluid.

  During heating, the temperature of the heat exchange fluid (heated heat medium or cooled refrigerant) supplied to the air conditioning pipes on the walls, floors, and ceilings of the building is controlled through a spiral pipe placed in the buried tank. It is possible to easily switch between heating and cooling during cooling.

  The buried tank is buried underground. The temperature of the water stored in the buried tank is almost stable throughout the season, regardless of fluctuations in the outside air temperature. For this reason, the stored water can be easily heated with the minimum energy in the winter, and can be easily cooled with the minimum energy in the summer.

  In the present invention, since the temperature of the heat exchange fluid inside the spiral tube is adjusted through the water whose temperature is adjusted in the buried tank, the temperature of the heat exchange fluid circulating in the air conditioning pipe arranged in the building becomes excessively high. Each living space can be maintained at a desired temperature with minimum energy without being lowered or lowered.

  According to the second aspect of the present invention, the air-conditioning pipe disposed inside the wall is covered with sand filled inside the wall.

  By putting sand inside the wall and covering the air conditioning pipe, the action of cooling and heating by radiant heat can be ensured for a long time. Filling the floor or ceiling with sand may cause weight problems, but the wall weight can be easily dealt with by increasing the strength of the beam.

  According to a third aspect of the present invention, a heat storage space is provided in the upper part of the buried tank, and the upper part of the heat storage space is closed with a heat storage material.

  The water stored in the buried tank is at a high temperature when used during heating. If the excess heat is stored in the heat storage space provided in the upper part of the buried tank and the upper part is covered with the heat storage material, the road surface in the site where the heat storage material is arranged is in a state capable of melting snow at 0 ° C. or more. For this reason, there is no ice and snow on the heat storage material even in the severe winter season, and this portion can be used as a parking space, for example.

  According to the surface air conditioning apparatus according to the present invention, efficient surface air conditioning can be realized with a simple structure. There are advantages in that running costs and maintenance can be suppressed, temperature differences due to residence floors can be eliminated, and surplus heating of heating hot water can be used effectively.

  FIG. 1 illustrates a surface air conditioning apparatus according to the present invention. This surface air conditioning apparatus includes an air conditioning pipe 10 disposed on a wall 1 of a building, a buried tank 20 and a spiral pipe for supplying a heat exchange fluid (liquid heating medium or refrigerant) to the air conditioning pipe 10. 30. In cold regions, it is desirable to use antifreeze as the heat exchange fluid.

  As shown in an enlarged view in FIG. 2, the air conditioning pipe 10 arranged on the wall 1 of the building is arranged inside a wall space made by, for example, placing concrete plates 11 facing each other, and the wall space is filled with sand 12. The air-conditioning pipe 10 is covered with sand 12. Thereby, the heat of the heat exchange fluid flowing through the air conditioning pipe 10 is supplied to the living room R through the sand 12 and the concrete plate 11 as radiant heat.

  Reference numeral 31 is a pump device that supplies heat exchange fluid to the air conditioning pipe 10, 32 is a delivery pipe that feeds the heat exchange fluid into the pump apparatus 31, and 33 is heat exchange that dissipates heat in the air conditioning pipe 10. This is a refeed pipe for returning the fluid to the spiral pipe 30 for recirculation. The spiral pipe 30, the delivery pipe 32, the air conditioning pipe 10, and the resupply pipe 33 form one circulation path via a pump device 31 disposed in the middle, and the heat exchange fluid circulates inside the circulation path. The circulation path may have a branch path in the pump device 31 or other part.

  The temperature of the heat exchange fluid supplied to the air conditioning pipe 10 is adjusted by the buried tank 20 and the spiral tube 30 disposed inside the buried tank 20.

  The embedding tank 20 is formed of, for example, concrete and embedded in the ground in the site. This is to make it less susceptible to outside air temperature and to minimize changes in internal water temperature due to geothermal heat. The buried tank 20 always stores a certain amount or more of water W, and the temperature of the heat exchange fluid flowing through the spiral tube 30 is adjusted by controlling the temperature of the water W. In this embodiment, the heater 27 for heating the water W is arranged, for example, at the center of the bottom surface inside the buried tank 20. Of course, the installation position, shape, and number of heaters 27 can be designed as appropriate. In this embodiment, the heater 27 functions as the water temperature control device of the present invention.

  The replenishment of water W to the buried tank 20 is performed through a water supply pipe 21 branched from the water supply, for example. If a water level sensor (not shown) is provided in the buried tank 20, an appropriate amount of water W is always replenished in the buried tank 20, and the temperature of the heat exchange fluid flowing through the spiral tube 30 is adjusted to a suitable temperature (preset temperature). Can do. The spiral tube 30 is used to increase the fluid path distance with a small vertical dimension. The number of rotations of the spiral is not limited.

  In addition, when the water W stored in the buried tank 20 is always maintained at a high temperature by the heater 27 as in this embodiment, the water W can also be used for hot water supply. In this case, for example, a hot water supply pump device 22 is provided under the floor, the water W of the buried tank 20 is pumped up, and the hot water (water W) is supplied to the hot water supply pipe 24 of the washing facility 23 in the living room R. The temperature of the water W in the buried tank 20 is usually about 40 to 50 ° C. if only heating is performed. However, in the case of a high-rise apartment with a large number of households when used for hot water supply, the temperature drops rapidly. In order to avoid this, it is desirable that the temperature of the water W be in a relatively high temperature zone, for example, 50 to 60 ° C. Since preferable temperature conditions of the water W are different depending on the latitude, the amount of snowfall, the outside air temperature, the usage amount of the hot water supply equipment, etc., it is desirable to set numerical values individually.

  In the buried tank 20, the stored water W is always heated during the winter heating. Therefore, it is possible to use remaining heat other than hot water supply. For example, if the heat storage space 28 is provided on the buried tank 20, the heat storage space 28 located below the ground has a severe winter season in a cold region due to the heat dissipation of the water W in the buried tank 20 and the effect of suppressing the temperature change due to geothermal heat. Even so, it can be kept at a plus temperature of 0 ° C. or higher. If the heat storage space 28 is covered with, for example, a steel plate or a concrete plate, it is possible to melt snow at the entrance by using the remaining heat. Reference numeral 29 is an inspection port of the buried tank 20 disposed on the heat storage space 28.

  Therefore, according to such a configuration, water W is supplied to the buried tank 20 buried under the ground and heated by the heater 27, and the heat exchange fluid circulating and flowing through the spiral tube 30 disposed inside the buried tank 20 is heated and adjusted. The living room R can be heated (surface heating) through the wall 1 by being sent to the air conditioning pipe 10.

  Since the wall 1 is filled with sand 12 and the concrete plate 11 is arranged outside the wall 1, the heat of the heat exchange fluid flowing through the air conditioning pipe 10 is stored in the sand 12 and the concrete plate 11 while being radiated heat. To the living room R. The radiant heat supplied from the wall 1 is gentle and does not pollute the air, and the heating effect is stable for a long time. Since the air conditioning pipe 10 is covered with the sand 12, heat loss in each room R is very small even in a high-rise apartment, and there is no significant difference in the air conditioning temperature between the upper floor and the lower floor.

  The water W in the buried tank 20 is kept at a high temperature by the heater 27. Since this can be used directly for hot water supply or indirectly for heat dissipation to the heat storage space 28, the heat of the heated water W can be used effectively other than for heating.

  In this embodiment, the case where the heat exchange fluid is used for heating has been described. However, if the water W of the buried tank 20 is maintained at a low temperature via a separately provided cooler, surface cooling can be performed in summer with the same configuration. The point that the heat of the heat exchange fluid flowing through the air conditioning pipe 10 is stored in the sand 12 and the concrete board 11 and is supplied to the living room R as radiant heat is the same as in the case of heating. In high-rise apartments with a large number of households, it becomes an efficient cooling device with low energy consumption.

  In addition, as shown in FIG. 3, in order to improve the heat insulation around the underfloor, the floor may be filled with crushed stone 40 to fill the underfloor space, and a metal heat storage conductive pipe 41 having an internal cavity may be driven below the ground. In this way, geothermal heat with little temperature change can be transmitted to the crushed stone 40 under the floor via the heat storage conductive pipe 41 even in the severe winter season. In this way, the crushed stone 40 is kept at a positive temperature of 0 ° C. or higher even in the severe winter season due to the conduction of geothermal heat, and the heat loss of the living room R is minimized. Not only increase the heating effect in winter, but also increase the cooling effect in summer.

  Moreover, as shown in FIG. 4, when the heat storage space 28 provided on the buried tank 20 is firmly formed of, for example, reinforced concrete, the heat storage space 28 can be used as a parking space. 44 is reinforced concrete constituting the bottom surface and side surface of the heat storage space 28, 45 is a cover plate (concrete plate or steel plate) arranged on the top of the heat storage space 28, 46 is an automobile, and 47 is a support leg of the cover plate 45. .

  In this case as well, it is desirable to drive the heat storage conducting pipe 41 into the bottom surface of the heat storage space 28 to guide the geothermal heat and prevent the temperature change of the heat storage space 28. The internal temperature of the heat storage space 28 can be maintained at a plus temperature at which snow can be melted by the heat released from the buried tank 20 (indicated by the arrow M), but by always supplying geothermal heat through the heat storage conductive pipe 41, the heat storage space 28 is maintained. A rapid decrease in internal temperature change can be prevented, and a stable snow melting effect can be exhibited.

  FIG. 5 illustrates a case where the buried tank 20 is used exclusively for heating, and a case where a buried tank 50 dedicated for cooling is separately provided.

  Similarly to the buried tank 20, the buried tank 50 for cooling only stores the water W2, cools the heat exchange fluid flowing inside the spiral pipe 51 with the water W2 whose temperature is controlled to a low temperature, and pipes for air conditioning of the wall 1 10 to adjust (cool) the temperature of the room R.

  The heat exchange fluid to be supplied to the air conditioning pipe 10 is supplied from the spiral pipe 30 of the heating-only burying tank 20 through the pump device 31 from autumn to winter to spring, and from spring to summer to autumn is a cooling-only burying tank. It is supplied from 50 spiral tubes 51 through a pump device 31. The delivery pipe 32 and the resupply pipe 33 may have the same configuration as that of the buried tank 20.

  For example, the water W2 in the cooling-only buried tank 50 is obtained by using, for example, a cooler 55 disposed under the floor and a cooling pipe 58 for exchanging heat with the coolant supplied from the cooler 55 via the connection pipe 57 with the water W2. Cooling. The fluid path of the cooling pipe 58 may be a spiral shape or a matrix shape, but is disposed at a position where it is immersed in the water W2. This is for heat exchange. In this embodiment, the cooler 55, the connecting pipe 57, the cooling pipe 58, and the heater 27 function as the water temperature control device of the present invention.

  Since the water W2 in the buried tank 50 may be maintained at a low temperature (for example, 5 to 8 ° C.) suitable for cooling, the cooler 55 may be small. Further, since the water W2 is not used for water supply, unlike the buried tank 30, special water supply equipment such as a water level sensor is not necessarily required. As for the water W2, it is desirable to use water supplied from the water supply pipe, but it is possible to take appropriate measures such as storing water using a hose, for example, without preparing a dedicated piping facility.

  When switching between heating and cooling, the refrigerant circulation path of the helical tube 30 and the helical tube 51 may be switched using a switching valve (not shown) of the pump device 31.

  According to the configuration shown in FIG. 5, switching between cooling and heating can be easily performed using the switching valve of the pump device 31. The water W in the buried tank 20 for heating can also be used for hot water supply, so the water W in the buried tank 20 may be heated by the heater 27 even when the buried tank 50 is operating in winter.

  The surface air-conditioning apparatus according to the present invention is not limited to the configuration described above. For example, the air conditioning pipe 10 may be arranged on the floor or ceiling.

  The pump device 22 for hot water supply is not always necessary. This is because a separate hot water supply facility can be provided.

It is a figure which shows the apparatus for surface air conditioning which concerns on 1st embodiment. It is the figure which expanded and showed the circumference | surroundings of the piping for an air conditioning shown in FIG. It is a figure which illustrates the state which packed the crushed stone on the floor surface of FIG. It is a figure which shows the state which made the thermal storage space shown in FIG. 1 the parking space. It is a figure which shows 2nd embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Wall 10 Piping for air conditioning 11 Concrete board 12 Sand 20, 50 Embedded tank 21 Water supply pipe 22, 31 Pump apparatus 23 Washing-room equipment 24 Hot-water supply pipe 27 Heater (water temperature control apparatus)
28 Thermal Storage Space 29 Inspection Port 30, 51 Spiral Pipe 32 Delivery Pipe 33 Resupply Pipe 40 Crushed Stone 41 Thermal Storage Conduction Pipe 44 Reinforced Concrete 45 Cover Plate 47 Support Leg 55 Cooler (Water Temperature Control Device)
57 Connecting pipe (water temperature control device)
58 Cooling pipe (water temperature control device)
M Heat R Living room W, W2 Water

Claims (3)

A surface air conditioning device for supplying heat exchange fluid to an air conditioning pipe arranged on at least one of a wall, a floor, and a ceiling,
A buried tank buried in the site;
A water temperature control device for adjusting the storage temperature of the buried tank;
A spiral tube disposed inside the buried tank;
An apparatus for surface air conditioning comprising: a pump device for circulatingly driving a heat exchange fluid in a circulation path connecting the spiral pipe and the air conditioning pipe.   2. The surface air-conditioning apparatus according to claim 1, wherein the air-conditioning pipe disposed inside the wall is covered with sand filled in the wall. A heat storage space is provided at the top of the buried tank,
The apparatus for surface air conditioning according to claim 1, wherein an upper portion of the heat storage space is closed with a heat storage material.

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