JP2009250466A - Heating and cooling system and building - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a heating and cooling system for using a heat exchanger in an underfloor space even for cooling. <P>SOLUTION: This heating and cooling system includes a heat pump 2 as a heat source installed outdoors, a heat storage tank 3 installed in the underfloor space 4 and storing the heat supplied from the heat pump 2, an indoor heat absorber/radiator 7 as an indoor heat exchanger installed indoor space 6, an underfloor heat absorber/radiator 5 as the underfloor heat exchanger installed in the underfloor space 4, an air supply opening 8 formed on a floor section 1a for supplying the cold air or warm air from the underfloor space 4 into an indoor space 6, and an exhaust opening 9 formed on the floor section 1a for discharging the cold air or warm air from the indoor space 6 to the underfloor space 4. The heat storage tank 3 and the indoor heat absorber/radiator 7, and the heat storage tank 3 and the underfloor heat absorber/radiator 5 are respectively connected by circulation pipe conduits 10, 11 having circulation pumps 10a, 11a, and the circulating fluid stored in the heat storage tank 3 is switchably circulated in the circulation pipe conduit 10 connected to the indoor heat absorber/radiator 7 and the circulation pipe conduit 11 connected to the underfloor heat absorber/radiator 5. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an air conditioning system using a heat source such as a heat pump and a building including the air conditioning system.

  2. Description of the Related Art Conventionally, an air conditioning system that can heat and cool a building using a heat pump is known (see, for example, Patent Document 1).

In such a conventional air conditioning system, a heat exchanger dedicated to heating is installed in the under-floor space of a building, and a heat exchanger combined with air conditioning is installed in the indoor space.
JP 2007-78324 A

  Thus, in the conventional cooling / heating system, the heat exchanger in the underfloor space is used only during heating, and is not used at all during cooling.

  Then, this invention aims at providing the building provided with the air conditioning system which can use the heat exchanger of underfloor space also for air_conditioning | cooling, and the air conditioning system.

  In order to achieve the above object, an air conditioning system according to the present invention includes a heat source, a heat storage unit that is installed in an underfloor space on the lowest floor of a building and is covered with a heat insulating material that stores heat supplied from the heat source, An indoor heat exchanger installed in the indoor space of the building and an underfloor heat exchanger installed in the underfloor space, the heat storage section, the indoor heat exchanger, the heat storage section, and the underfloor heat exchange The units are connected by respective circulation lines having circulation pumps, and can be switched between a circulation line connected to the indoor heat exchanger and a circulation line connected to the underfloor heat exchanger, The circulating fluid stored in the heat storage unit circulates.

  Here, an air supply port for supplying cold air or warm air from the underfloor space to the indoor space may be provided on the floor of the building.

  The air supply port may be provided with a fan for supplying and blowing air and a lid with a louver.

  Furthermore, it is good for the floor of the said building to provide the exhaust port which exhausts cool air or warm air from the said indoor space in the said underfloor space.

  The heat source may be a heat pump installed outside the building, and may be connected to the heat storage unit to store heat by circulating a heat medium.

  Further, the underfloor space may be surrounded by the floor of the building, the foundation bottom concrete, and the foundation side wall concrete, and a foundation heat insulating material may be attached to the foundation side wall concrete.

  The building of the present invention includes any one of the air conditioning systems described above.

  Such an air-conditioning system of the present invention is installed in a heat source, a heat storage unit that is installed in the underfloor space of the lowest floor of the building and is covered with a heat insulating material that stores heat supplied from the heat source, and an indoor space of the building And an underfloor heat exchanger installed in the underfloor space.

  And the heat storage unit and the indoor heat exchanger, and the heat storage unit and the underfloor heat exchanger are connected by respective circulation lines having circulation pumps, and connected to the circulation line and the underfloor heat exchanger connected to the indoor heat exchanger The circulating fluid stored in the heat storage section circulates in a switchable manner with the circulation pipe.

  Due to such a configuration, unlike the conventional air conditioning system, the underfloor heat exchanger can be used for both air conditioning and heating.

  Here, when an air supply port for supplying cool air or warm air from the underfloor space to the indoor space is provided on the floor of the building, especially during cooling using an underfloor heat exchanger, Mild cold air can be sent directly into the air supply port.

  In addition, when a fan for supplying and blowing air is provided at the air supply opening and a cover with a louver is provided, especially during cooling using an underfloor heat exchanger, A mild cold air can be blown.

  In addition, if the building floor is provided with an exhaust port for exhausting cool air or warm air from the indoor space into the under floor space, the cool air or warm air supplied from the under floor space into the indoor space is again returned from the exhaust port to the under floor space. Since it is circulated into the inside, there is little heat loss and it can be implemented economically.

  In addition, when the heat source is a heat pump installed outside the building and is connected to the heat storage unit to store heat by circulating the heat medium, the heat pump is used, so that the energy saving performance can be improved. .

  Furthermore, when the underfloor space is surrounded by the floor of the building, the foundation floor concrete and the foundation side wall concrete, and the foundation side wall concrete is attached to the foundation side wall concrete, Cold air or warm air heat in the underfloor space can be stored outside as much as possible without leaking.

  Since the building of such this invention is set as the structure provided with the air conditioning system of this invention, it can be set as the building which has an above-described effect.

  The best mode for carrying out the present invention will be described below with reference to the drawings.

  FIG. 1 shows a schematic configuration of a building 1 provided with an air conditioning system according to the present embodiment.

  First, such a building 1 includes a foundation bottom concrete 1b constructed as foundation insulation, a foundation side wall concrete 1c erected on the side edge, an outer wall portion 1d erected on the foundation side wall concrete 1c, and an outer wall thereof. It is mainly comprised from the ceiling part 1e which block | closes the upper end opening of the part 1d.

  In the space surrounded by the ceiling portion 1e and the outer wall portion 1d, an underfloor space 4 and an indoor space 6 such as a living room are separated by a floor portion 1a as a floor. This floor portion 1a has a configuration in which heat transfer between the underfloor space 4 and the indoor space 6 is allowed to some extent, particularly in consideration of cooling and heating from the underfloor space 4 side, and no heat insulating material is attached. Yes.

  Further, a base heat insulating material 12 such as glass wool is attached to the side of the underfloor space 4 of the side wall concrete 1c, and a heat insulating structure in which cold air or warm air heat in the underfloor space 4 does not leak to the outside as much as possible.

  And the air conditioning system of this Embodiment is the heat pump 2 as a heat source installed outdoors, the heat storage tank 3 as a heat storage part which heat-stores the heat installed in the underfloor space 4 and supplied from the heat pump 2, indoors An indoor heat sink / radiator 7 as an indoor heat exchanger installed in the space 6, an underfloor heat sink / heater 5 as an underfloor heat exchanger installed in the underfloor space 4, and cold air from the underfloor space 4 into the indoor space 6 Mainly composed of an air inlet 8 provided in the floor portion 1a for supplying warm air and an exhaust port 9 provided in the floor portion 1a for exhausting cool air or warm air from the indoor space 6 into the under-floor space 4. Yes.

  The heat pump 2 is a device that performs cooling or heating by moving heat between a low-temperature object and a high-temperature object.

  That is, the heat pump 2 expands and compresses while circulating a heat medium such as carbon dioxide, thereby absorbing heat or releasing heat to cool or heat the heat medium. To do.

  The heat storage tank 3 is formed by covering the surface of a tank made of plastic resin or the like filled with water as a circulating fluid with a heat insulating material 31 such as glass wool. Heat is stored so that heat is not exchanged with air.

  However, this circulating fluid is not limited to water, and a fluid that can efficiently transport heat such as antifreeze is preferably used.

  A heat medium circulation pipe 21 connected to the heat pump 2 is inserted into the heat storage tank 3, and water filled in the inside of the coated heat storage section 31 circulates through the heat medium circulation pipe 21. The water is cooled or heated by this, and is stored in this water.

  The indoor heat sink / radiator 7 is connected to the heat storage tank 3 and the circulation pipe 10 including the return pipe 10B having the circulation pump 10a, and the water stored in the heat storage tank 3 circulates to exchange heat. The air conditioning from the indoor space 6 side can be performed.

  Also, the underfloor heat sink 5 is connected by a circulation pipe 11 including an outward pipe 11A having a heat storage tank 3 and a circulation pump 11a and a return pipe 11B, and water stored in the heat storage tank 3 circulates to exchange heat. It is possible to perform air conditioning from the underfloor space 4 side.

  Further, the controller 15 provided in the indoor space 6 can be switched between cooling and heating from the indoor space 6 side and cooling and heating from the underfloor space 4 side.

  In addition, since the cooling from the indoor space 6 side is used for full-scale cooling especially during summer daytime, a drain drain 16 penetrating outdoors is provided at the lower part of the indoor heat sink / radiator 7. It has been.

  On the other hand, since the cooling from the underfloor space 4 side is used for mild cooling especially at night in summer, a drain for draining from the underfloor space 4 to the outside is not provided.

  The air supply port 8 is provided through the floor portion 1a, is provided with a fan 13 for supplying and blowing air, and is provided with a cover 14 with a louver.

  The air supply fan 13 is used particularly during mild cooling from the underfloor space 4 side.

  Further, the exhaust port 9 is also provided through the floor 1a, and a lid 17 with a louver is provided.

  Next, the operation pattern of the air conditioning system of this Embodiment is demonstrated.

  The air conditioning system of the present embodiment is particularly characterized by an operation pattern during cooling.

  When it is very hot such as during the summer day, as shown in FIG. 2, the indoor heat sink 7 is used by the controller 15 by utilizing the heat stored in the heat storage tank 3 by using inexpensive late-night power. Full-scale cooling from the indoor space 6 side (for example, cooling to a room temperature of about 25 ° C.) is performed.

  During this full-scale cooling, cold air enters from the air supply port 8 and the exhaust port 9, and the underfloor space 4 is cooled to, for example, about 28 ° C.

  After that, when the sun was down and the heat was soft, as shown in FIG. 3, switching was performed by the controller 15, and the fan 13 for supplying and blowing air from the supply port 8 was rotated to store heat in the heat storage tank 3. Using the heat that has been kept, mild cooling (for example, cooling in which a wind of about 29 ° C. is blown) is performed by the underfloor heat sink 5 from the underfloor space 4 side.

  During the mild cooling, as described above, since the underfloor space 4 is cooled to some extent during the full-scale cooling, mild cold air is immediately blown from the air supply port 8. Is done.

  Further, since the amount of heat supplied to the underfloor heat sink / radiator 5 is small, the heat in the heat storage tank 3 remaining after full-scale cooling during the day may be used.

  Next, the effect of the air conditioning system of this Embodiment is demonstrated.

  In such an air conditioning system of the present embodiment, the heat pump 2 as a heat source and the heat insulating material 31 that stores heat supplied from the heat pump 2 installed in the lower floor space 4 of the lowest floor of the building 1 are covered. A heat storage tank 3 as a heat storage unit, an indoor heat sink / radiator 7 installed in the indoor space 6 of the building 1, and an underfloor heat sink / radiator 5 installed in the underfloor space 4 are provided.

  The heat storage tank 3 and the indoor heat sink / radiator 7 and the heat storage tank 3 and the underfloor heat sink / heater 5 are connected by the circulation pipes 10 and 11 having circulation pumps 10 a and 11 a, and are connected to the indoor heat sink and radiator 7. The circulating fluid stored in the heat storage tank 3 circulates between the circulating conduit 10 and the circulating conduit 11 connected to the underfloor heat sink / radiator 5 in a switchable manner.

  Due to such a configuration, unlike the conventional air conditioning system, the underfloor heat sink / radiator 5 can be used for both air conditioning and heating.

  Here, the floor portion 1a as the floor of the building 1 is provided with an air supply port 8 for supplying cool air or warm air from the underfloor space 4 into the indoor space 6, so that the underfloor heat sink 5 is used in particular. During cooling, mild cold air can be sent directly from the underfloor space 4 into the indoor space 6 through the air inlet 8.

  In addition, since the air supply port 8 is provided with a fan 13 for supplying and blowing air and a cover 14 with a louver, an underfloor space particularly during cooling using the underfloor heat sink / radiator 5. Mild cold air that is gentle on the body can be blown from 4 into the indoor space 6.

  Further, since the floor portion 1a has an exhaust port 9 for exhausting cool air or warm air from the indoor space 6 into the under floor space 4, the cool air or warm air supplied from the under floor space 4 into the indoor space 6 is exhausted again. Since it circulates in the underfloor space 4 from the opening | mouth 9, there is little heat loss and it can implement economically.

  Moreover, since the heat source is the heat pump 2 installed outside the building 1 and is connected to the heat storage tank 3 to store heat by circulating the heat medium, the heat pump 2 is used, so that the energy saving performance is excellent. be able to.

  Further, the underfloor space 4 is surrounded by the floor portion 1a of the building 1, the foundation bottom concrete 1b, and the foundation side wall concrete 1c, and the foundation heat insulating material 12 is attached to the foundation side wall concrete 1c. Since 4 is made into a heat insulating structure, it is possible to store cold air or warm air in the underfloor space 4 as much as possible without leaking outdoors.

  Since the building 1 of such this invention is set as the structure provided with the air conditioning system of this invention, it can be set as the building which show | plays an above-described effect.

  Although the best embodiment of the present invention has been described in detail with reference to the drawings, the specific configuration is not limited to this embodiment, and design changes that do not depart from the gist of the present invention are possible. Are included in the present invention.

  For example, in the said embodiment, although the structure of the building 1 was simplified so that the description of the air conditioning system of this invention could be performed easily, it is not limited to this.

  That is, in a building having a plurality of rooms, the air supply / emission port 8 and the exhaust port 9 may be provided in each room to implement the cooling / heating system of the present invention.

It is explanatory drawing which shows schematic structure of the building provided with the air conditioning system of the best embodiment of this invention. In the air conditioning system of this Embodiment, it is explanatory drawing which shows the state which performed full-scale cooling. It is explanatory drawing which shows the state which performed mild air_conditioning | cooling in the air conditioning system of this Embodiment.

Explanation of symbols

1 Building 1a Floor (floor)
1b foundation bottom concrete 1c foundation side wall concrete 2 heat pump 3 heat storage tank (heat storage section)
31 Insulation 4 Underfloor space 5 Underfloor heat sink (underfloor heat exchanger)
6 Indoor space 7 Indoor heat sink (indoor heat exchanger)
8 Air supply port 9 Exhaust port 10 Circulation line 10a Circulation pump 11 Circulation line 11a Circulation pump 12 Basic heat insulating material 13 Fan 14 for supplying and blowing air Cover with louver

Claims (7)

A heat source, a heat storage unit installed in an underfloor space on the lowest floor of the building and covered with a heat insulating material that stores heat supplied from the heat source, and an indoor heat exchanger installed in the indoor space of the building, An underfloor heat exchanger installed in the underfloor space,
The heat storage unit and the indoor heat exchanger, and the heat storage unit and the underfloor heat exchanger are connected by respective circulation lines having circulation pumps, and the circulation line connected to the indoor heat exchanger and the underfloor heat A cooling and heating system, wherein the circulating fluid stored in the heat storage section circulates between the circulation pipe connected to the exchanger so as to be switchable.   The air conditioning system according to claim 1, wherein an air supply port for supplying cool air or warm air from the underfloor space to the indoor space is provided on the floor of the building.   The air conditioning system according to claim 2, wherein a fan for supplying and blowing air is provided at the air supply port, and a lid with a louver is provided.   The air conditioning system according to any one of claims 1 to 3, wherein an exhaust port for exhausting cool air or warm air from the indoor space into the under floor space is provided on the floor of the building.   5. The heat source is a heat pump installed outside the building, and is connected to the heat storage unit to store heat by circulating a heat medium. 6. Air conditioning system.   6. The underfloor space is surrounded by a floor of the building, foundation bottom concrete, and foundation side wall concrete, and a foundation heat insulating material is attached to the foundation side wall concrete. The air conditioning system as described in any one of Claims.   A building comprising the air conditioning system according to any one of claims 1 to 6.

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