JP2013130299A - Air conditioning system, and building - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air conditioning system capable of using cold exhaust air of a heat pump device of a heat pump type water heater which can air condition during the daytime.SOLUTION: An air conditioning system of a building 1 uses a heat pump device 3 of a heat pump type water heater 2, and includes a cold air supply opening 5a on an inner surface of an under-floor space 11 of the building 1, wherein a cold air supply opening 5a and an exhaust portion 31 of the heat pump device 3 of the heat pump type water heater 2 are connected with a duct 5 as a ventilation path. Ventilation equipment 6 which blows ventilation air from a ventilation air blowing port 61, and supplies the air to an above-floor space 12 from an air conditioning air supply opening 13a provided in a floor part 13 is installed in the under-floor space 11.

Description

  The present invention relates to an air conditioning system and a building including the air conditioning system.

  2. Description of the Related Art Conventionally, there is known an air conditioning system that cools the interior space of a building in a hot season such as summer using the cold exhaust of a heat pump device of a heat pump hot water heater (see, for example, Patent Document 1).

Japanese Patent No. 4302429

  However, in the conventional technology such as Patent Document 1 described above, the heat pump type water heater is normally operated in a relatively inexpensive midnight power time zone (for example, the time zone from 23:00 to 7:00 in the Kanto region). Therefore, it could not be used for cooling during the day.

  Therefore, an object of the present invention is to provide an air conditioning system using the cold exhaust of a heat pump device of a heat pump type hot water heater capable of performing daytime cooling, and a building including the air conditioning system.

  In order to achieve the above object, an air conditioning system of the present invention is a building air conditioning system using a heat pump device of a heat pump type hot water heater, and is provided with a cold air supply port facing a space under the floor of the building. And the cold air inlet and the exhaust part of the heat pump device of the heat pump type hot water heater are connected by a ventilation path, and ventilating air is blown out from the ventilation air blowing part into the underfloor space, A ventilator for supplying air to the above-mentioned floor space from an air-conditioning air supply port that communicates the under-floor space and the above-floor space is provided.

  Here, the underfloor space is preferably a heat insulating structure in which a heat insulating material is provided on an inner surface thereof.

  Moreover, the cool air circulation port provided facing the underfloor space and the air supply unit of the heat pump device may be connected by a circulation path.

  Furthermore, a humidity control material may be provided in the underfloor space.

  In addition, the heat pump device of the heat pump type hot water heater is also provided with an outdoor exhaust part, and the exhaust part and the outdoor exhaust part are provided with an exhaust amount adjusting means, and an exhaust ratio between them. Should be adjustable.

  Furthermore, the ventilator may be capable of automatically adjusting the amount of ventilation air blown out from the ventilation air blowing section per unit time.

  The building of the present invention includes the above-described air conditioning system of the present invention.

  Such an air conditioning system of the present invention is a building air conditioning system using a heat pump device of a heat pump type hot water heater.

  And the cold air supply opening is provided facing the under-floor space of a building, and the cold air supply opening and the exhaust part of the heat pump apparatus of a heat pump type hot water heater are connected by the ventilation path.

  Further, the underfloor space is configured with a ventilator that blows out ventilation air from the ventilation air outlet and supplies air to the above floor space from an air conditioning air supply port that communicates between the underfloor space and the above floor space. Yes.

  Because of this structure, it is cool air discharged from the exhaust part of the heat pump device of the heat pump type hot water heater, and the underfloor space is set in a relatively inexpensive midnight power time zone (for example, the time zone from 23 o'clock to 7 o'clock in the Kanto region). The foundation to be constructed is mainly cooled as a cool storage body, and during ventilation by the ventilator, the cooling heat mainly stored by the foundation is sent into the space above the floor from the air conditioning inlet along with the ventilation air, thereby cooling the air during the day. It can be carried out.

  Here, when the underfloor space has a heat insulating structure in which a heat insulating material is provided on the inner side surface, the cold heat stored in the foundation is difficult to escape to the outdoors, so that the cold storage efficiency can be improved.

  In addition, when the cold air circulation port provided facing the underfloor space and the air supply part of the heat pump device are connected by a circulation path, the cold air discharged from the exhaust part of the heat pump device of the heat pump water heater, Since the cold heat escaping from the air-conditioning air supply port when the foundation as the cold storage body is cooled is reduced, the cold storage efficiency can be further increased.

  Furthermore, when a humidity control material is provided in the underfloor space, it is possible to prevent condensation in the underfloor space, and in the daytime cooling, cool air dehumidified by the humidity control material is placed in the underfloor space. You can supply air.

  In addition, the heat pump device of the heat pump type hot water heater is also provided with an outdoor exhaust part, and the exhaust part and the outdoor exhaust part are provided with an exhaust amount adjusting means so that the exhaust ratio between them can be adjusted. If this is the case, adjusting the exhaust ratio between the exhaust section and the outdoor exhaust section will ensure the amount of cold storage suitable for daytime cooling the next day, and heat pumps in the cold season such as winter When the hot water heater is in operation, if the cold exhaust of the heat pump device is exhausted from the outdoor exhaust part, the space above the floor does not need to be cooled.

  Furthermore, if the ventilation device is capable of automatically adjusting the amount of ventilation air blown out from the ventilation air blowing section per unit time, it is necessary to minimize the minimum If the ventilation air is blown out from the ventilation air blowing section, the cooling heat that escapes from the air-conditioning air supply port is reduced, so that the efficiency of cold storage can be improved. By adjusting the amount of ventilation air blown out from the air blowing unit per unit time, the cooling strength can be set.

  Such a building of the present invention is configured to include the air conditioning system of the present invention.

  Since it is such a structure, it can be set as the building which show | plays the effect of the air conditioning system of this invention mentioned above.

It is explanatory drawing which shows schematic structure of the building provided with the air conditioning system of Example 1. FIG. It is an enlarged view of the part of the heat pump apparatus in FIG. In the air conditioning system of Example 1, it is explanatory drawing which shows the state which is performing the cool storage operation. In the air-conditioning system of Example 1, it is explanatory drawing which shows the state which is performing the cool storage operation so that it may become a small cool storage amount. It is explanatory drawing which shows the state which is performing air_conditionaing | cooling operation in the air conditioning system of Example 1. FIG. It is explanatory drawing which shows schematic structure of the building provided with the air conditioning system of Example 2. FIG. It is explanatory drawing which shows schematic structure of the building provided with the air conditioning system of Example 3. FIG.

  EMBODIMENT OF THE INVENTION Hereinafter, the form for implementing this invention is demonstrated based on Examples 1-3 shown in drawing.

  First, the configuration of the first embodiment will be described.

  FIG. 1 shows a schematic configuration of a building 1 provided with the air conditioning system of the first embodiment.

  First, this building 1 is constructed by building a building body 1A on a foundation 1B placed on the ground.

  Here, in the building 1, the interior space is partitioned in the building body 1 </ b> A by the floor portion 13 provided with the air supply inlet 13 a, and the underfloor space 11 and the abovefloor space 12 are formed.

  A heat pump hot water heater 2 and a heat pump device 3 of the heat pump hot water heater 2 are installed outside the building 1.

  Further, a cold air supply port 5a is provided on the inner surface of the underfloor space 11 of the building 1, and the cold air supply port 5a is connected to the exhaust part 31 of the outdoor heat pump device 3 and a duct as a ventilation path. 5 is connected.

  In the underfloor space 11, a ventilator 6 having a ventilating air outlet 61 is installed on the downstream side where the amount of ventilation air can be automatically adjusted per unit time.

  Further, the ventilation device 6 has a ventilation air suction portion 62 on the upstream side, and the ventilation air suction portion 62 and the outside air suction port 7a provided on the outer wall portion of the building main body 1A serve as a ventilation path. The duct 7 is connected.

  The underfloor space 11 has a heat insulating structure in which the heat insulating material 4 is provided on the inner side surface.

  Further, as shown in FIG. 2, the heat pump device 3 includes a casing 3 </ b> A that forms an outer shell of the heat pump device 3, an air supply unit 32 for sucking outside air, in addition to the exhaust unit 31, and after heat exchange. And an outdoor exhaust unit 33 that can directly exhaust the outside air.

  Here, the exhaust part 31 and the outdoor exhaust part 33 are respectively provided with opening degree adjusting valves 31a and 33a as exhaust amount adjusting means for adjusting the opening degree.

  Further, the opening ratio of the opening adjusting valves 31a and 33a, that is, the exhaust ratio can be adjusted by a control unit (not shown).

  In the casing 3A, an air supply fan 34 is provided on the air supply unit 32 side, and an air heat exchanger 35 is provided on the exhaust unit 31 and the outdoor exhaust unit 33 side.

  Next, the operation pattern of the air conditioning system of the first embodiment will be described.

  First, a cold storage operation pattern in the air conditioning system of the first embodiment will be described.

  When the daytime of the next day such as summer is expected to be hot, when the heat pump type hot water heater 2 is operated in the time zone of late-night electricity (for example, the time zone from 23:00 to 7:00 in the Kanto region) In the heat pump device 3 shown in FIG. 2, the opening degree adjustment valve 31a of the exhaust part 31 is fully opened, and the opening degree adjustment valve 33a of the outdoor exhaust part 33 is closed.

  When the air supply fan 34 is rotated, as shown in FIG. 3, the outside air sucked from the air supply unit 32 represented by the white arrow is cooled by the air heat exchanger 35, and the exhaust unit 31. The air is blown out into the duct 5, passes through the duct 5, and is blown out from the cold air supply port 5 a into the underfloor space 11.

  The cold outside air blown into the underfloor space 11 mainly cools the foundation 1B constituting the underfloor space 11 as a regenerator.

  Note that the ventilation air represented by the black arrows sucked from the outside air inlet 7a and blown out from the ventilation air blowing portion 61 of the ventilation device 6 through the duct 7 into the underfloor space 11 is the amount of blowing per unit time. Is automatically adjusted to the minimum necessary.

  As a result, the ventilation air supplied to the floor space 12 from the air-conditioning air supply port 13a has only a small amount of cold as shown by the dotted line arrow, and is just a cool breeze at night.

  When the day of the next day, such as summer, is expected to be slightly hot, when the heat pump water heater 2 is in operation during the midnight power hours (for example, the time zone from 23:00 to 7:00 in the Kanto region) In addition, in the heat pump device 3 shown in FIG. 2, the opening degree adjustment valve 31a of the exhaust part 31 is in an open state of, for example, 70%, and the opening degree adjustment valve 33a of the outdoor exhaust part 33 is, for example, 30% of opening degree. Open state.

  Then, when the air supply fan 34 is rotated, as shown in FIG. 4, the outside air sucked from the air supply unit 32 represented by the white arrow is cooled by the air heat exchanger 35, and 70% It blows out into the duct 5 from the exhaust part 31, passes through this duct 5, is blown out into the underfloor space 11 from the cold air supply port 5a, and the remaining 30% is directly discharged outside.

  The cold outside air blown into the underfloor space 11 mainly cools the foundation 1B constituting the underfloor space 11 as a regenerator.

  Note that the ventilation air represented by the black arrows sucked from the outside air inlet 7a and blown out from the ventilation air blowing portion 61 of the ventilation device 6 through the duct 7 into the underfloor space 11 is the amount of blowing per unit time. Is automatically adjusted to the minimum necessary.

  As a result, the ventilation air supplied to the floor space 12 from the air-conditioning air supply port 13a has only a small amount of cold as shown by the dotted line arrow, and is just a cool breeze at night.

  Next, the cooling operation in the air conditioning system of the first embodiment will be described.

  When it is desired to cool the building 1 during the day after the cold storage as described above, the heat pump type hot water heater 2 is not operated, and the air supply fan 34 of the heat pump apparatus 3 shown in FIG. Is not rotating.

  In such a state, as indicated by the dotted arrow in the foundation 1B as the cold storage body, the air in the underfloor space 11 is cooled by the cold heat stored.

  And the ventilation air represented by the black arrow which is sucked in from the outside air inlet 7a and blows out through the duct 7 from the ventilation air outlet 61 of the ventilator 6 into the underfloor space 11 is the air supply inlet 13a. When the air is supplied to the floor space 12 from above, the air is cooled as indicated by the dotted arrow, and the cooling air is cooled by the air for ventilation.

  At this time, the strength of the cooling can be set by changing the amount of ventilation air blown out per unit time by a controller (not shown).

  Next, the effect of Example 1 is demonstrated.

  The air conditioning system according to the first embodiment is an air conditioning system for a building 1 that uses the heat pump device 3 of the heat pump hot water heater 2.

  A cold air supply port 5a is provided on the inner surface of the underfloor space 11 of the building 1, and the cool air supply port 5a and the exhaust part 31 of the heat pump device 3 of the heat pump hot water heater 2 serve as a duct 5 as a ventilation path. Connected with.

  Further, the underfloor space 11 is provided with a ventilator 6 that blows out ventilation air from the ventilation air outlet 61 and supplies air to the floor space 12 from the air-conditioning air supply port 13a provided in the floor 13. It is said that.

  Because of such a configuration, it is cool air discharged from the exhaust section 31 of the heat pump device 3 of the heat pump hot water heater 2 and is relatively inexpensive in the late-night power time zone (for example, the time zone from 23 o'clock to 7 o'clock in the Kanto region). The foundation 1B constituting the underfloor space 11 is mainly cooled as a regenerator, and the cold heat mainly accumulated by the foundation 1B is ventilated together with the ventilation air from the air conditioning inlet 13a into the above-floor space 12 during ventilation by the ventilation device 6. By sending it in, it can be cooled during the day.

  Here, the underfloor space 11 has a heat insulating structure in which the heat insulating material 4 is provided on the inner surface thereof.

  For this reason, since the cold heat mainly stored in the foundation 1B becomes difficult to escape outdoors, the cold storage efficiency can be increased.

  Further, the heat pump device 3 of the heat pump type hot water heater 2 is also provided with an outdoor exhaust part 33, and the exhaust part 31 and the outdoor exhaust part 33 have opening degree adjusting valves 31a and 33a as exhaust amount adjusting means. Each is provided, and the exhaust ratio between them can be adjusted.

  For this reason, by adjusting the exhaust ratio between the exhaust unit 31 and the outdoor exhaust unit 33, it is possible to secure a cold storage amount suitable for daytime cooling of the next day, and a heat pump type in the cold season such as winter. When the water heater 2 is in operation, if the cold exhaust of the heat pump device 3 is exhausted from the outdoor exhaust part 33, the interior of the floor space 12 does not need to be cooled.

  Further, the ventilator 6 can automatically adjust the amount of ventilation air blown from the ventilation air blowing section 61 per unit time.

  For this reason, when cooling the foundation 1B as a cold storage body, if the minimum necessary ventilation air is blown out from the ventilation air blowing section 61, the cold heat escaping from the air-conditioning air supply port 13a is reduced. Cooling efficiency can be increased, and when cooling is performed during the day, the level of cooling is set by adjusting the amount of ventilation air blown out from the ventilation air blowing section 61 per unit time. be able to.

  Such a building 1 of Example 1 is configured to include the air conditioning system of Example 1 described above.

  Since it is such a structure, it can be set as the building which show | plays the effect of the air conditioning system of Example 1 mentioned above.

  Next, Example 2 will be described.

  In addition, the description which attaches | subjects the same code | symbol about the description of the same thru | or equivalent part as the content demonstrated in Example 1, and demonstrates.

  FIG. 6 shows a schematic configuration of a building 10 provided with the air conditioning system of the second embodiment.

  In the building 10 of the second embodiment, a cold air circulation port 8a is provided on the inner surface of the underfloor space 11, and the cold air circulation port 8a and the air supply unit 32 of the heat pump device 3 are connected by a duct 8 as a circulation path. This is mainly different from the building 1 of the first embodiment.

  For this reason, when the foundation 1B as the cold storage body is cooled by the cold air discharged from the exhaust part 31 of the heat pump device 3 of the heat pump type hot water heater 2, the cold air in the underfloor space 11 circulates in the duct 8 and is air-conditioned. Since the cold heat escaping from the air supply port 13a is reduced, the cold storage efficiency can be further increased.

  Other configurations and functions and effects are substantially the same as those in the first embodiment, and thus description thereof is omitted.

  Next, Example 3 will be described.

  In addition, the description which attaches | subjects the same code | symbol about the description of the same thru | or equivalent part as the content demonstrated in Example 1, and demonstrates.

  FIG. 7 shows a schematic configuration of a building 100 provided with the air conditioning system of the third embodiment.

  The building 100 according to the third embodiment is mainly different from the building 1 according to the first embodiment in that humidity control materials 9,.

  For this reason, dew condensation in the underfloor space 11 can be prevented, and in the daytime cooling, the cold air dehumidified by the humidity control materials 9 can be supplied into the underfloor space 12.

  Other configurations and functions and effects are substantially the same as those in the first embodiment, and thus description thereof is omitted.

  As mentioned above, although the form for implementing this invention has been explained in full detail based on Examples 1-3 with reference to drawings, the concrete structure is not limited to these Examples 1-3, Design changes that do not depart from the gist are included in the present invention.

  For example, in Embodiments 1 to 3 described above, the buildings 1, 10, and 100 are implemented as simple structures for the sake of simplicity, but the present invention is not limited to this, and of course, the buildings 1, 10 and 100 are implemented with more complicated structures. Also good.

  In the first to third embodiments, the ventilation device 6 is implemented as a simple structure for the sake of simplicity. However, the present invention is not limited to this, and of course, a more complicated structure such as providing a filter box. You may implement.

  Furthermore, in above-mentioned Examples 1-3, although implemented using the ventilator 6 which utilizes external air as ventilation air, it is not limited to this, For example, the air purified artificially as ventilation air is utilized. It may be carried out using a ventilation device.

DESCRIPTION OF SYMBOLS 1 Building 10 Building 100 Building 1A Building body 1B Foundation 11 Underfloor space 12 Overfloor space 13 Floor portion 13a Air-conditioning air inlet 2 Heat pump water heater 3 Heat pump device 3A Casing 31 Exhaust portion 31a Opening adjustment valve (displacement adjustment means)
32 Air supply unit 33 Outdoor exhaust unit 33a Opening adjustment valve (displacement adjustment means)
34 Air supply fan 35 Air heat exchanger 4 Heat insulating material 5 Duct (ventilation path)
5a Cold air inlet 6 Ventilator 61 Ventilation air outlet 62 Ventilation air inlet 7 Duct (ventilation path)
7a Outside air inlet 8 Duct (circulation path)
8a Cold air circulation port 9 Humidity control material

Claims (7)

An air conditioning system for a building using a heat pump device of a heat pump type hot water heater,
A cold air supply port is provided facing the underfloor space of the building, and the cold air supply port and the exhaust part of the heat pump device of the heat pump water heater are connected by a ventilation path,
The underfloor space is provided with a ventilator that blows out ventilation air from a ventilation air blowing section and supplies air to the above floor space from an air conditioning air supply port that communicates the underfloor space and the above floor space. A featured air conditioning system.   The air conditioning system according to claim 1, wherein the underfloor space has a heat insulating structure in which a heat insulating material is provided on an inner surface thereof.   The air conditioning system according to claim 1 or 2, wherein a cold air circulation port provided facing the underfloor space and an air supply unit of the heat pump device are connected by a circulation path.   The air conditioning system according to any one of claims 1 to 3, wherein a humidity control material is provided in the underfloor space.   The heat pump device of the heat pump type hot water heater is also provided with an outdoor exhaust part, and the exhaust part and the outdoor exhaust part are provided with an exhaust amount adjusting means, and an exhaust ratio between them is adjusted. The air conditioning system according to any one of claims 1 to 4, wherein the air conditioning system is enabled.   6. The ventilation device according to any one of claims 1 to 5, wherein the ventilation device can automatically adjust the amount of ventilation air blown from the ventilation air blowing section per unit time. Air conditioning system.   A building comprising the air conditioning system according to any one of claims 1 to 6.