JP2020101325A - Air-conditioning system - Google Patents

Abstract

To provide an air-conditioning system which facilitates a layout change and replacement work.SOLUTION: An air-conditioning system comprises: a concrete slab 18 with an upper face 18A and a lower face 18B thereof facing a floor of an upper story and a ceiling of a lower story respectively; and a mat element 20 which is installed on the upper face of the concrete slab and has piping 26, in which a heat medium flows, embedded therein. The heat medium flowing in the piping embedded in the mat element cools or heats the concrete slab. A double floor 100 is constructed above the upper face of the concrete slab so that air-conditioned air in an underfloor space 104 can be blown up into an indoor space.SELECTED DRAWING: Figure 7

Description

The present invention relates to an air conditioning system for air conditioning a room.

BACKGROUND ART Conventionally, there is known an air conditioning system in which a heat pump using a Peltier element is embedded in a building floor (for example, refer to Patent Document 1).

JP-A-2000-304372

However, in such an air conditioning system, the structure in which the heat pump is embedded in the slab makes it difficult to change the layout or replace the heat pump in the future.

It is an object of the present invention to provide an air conditioning system that facilitates layout changes and replacement work.

A first aspect is an air conditioning system having a concrete slab whose upper surface is the floor side and whose lower surface is the ceiling side, and a mat element which is placed on the upper surface of the concrete slab and in which a pipe through which a heat medium flows is embedded. ..

That is, by placing the mat element on the upper surface of the concrete slab, the concrete slab is cooled or heated by the heat medium flowing through the pipe embedded in the mat element. As a result, the room on the lower floor with the concrete slab as the ceiling is radiantly cooled or radiantly heated.

Further, as compared with a configuration in which the pipe through which the heat medium flows is buried in the concrete slab, the construction is easy. Furthermore, when changing the area to be air-conditioned, it is only necessary to change the place where the mat element is placed.

A second aspect is the air conditioning system according to the first aspect, in which a double floor is formed on the upper surface side of the concrete slab, and air conditioned from the underfloor space is blown into the room.

Thereby, the radiant heat from the ceiling and the conditioned air from the floor can efficiently cool and heat the room.

A third aspect is a second aspect in which the zoning of radiant air conditioning that is radiantly conditioned from the ceiling surface of the mat element and the zoning of blowout air conditioning that is conditioned by air from the double floor are common zoning. It is the described air conditioning system.

Thereby, the radiant air conditioning by the mat element can be supplemented by the air conditioning by the air from the double floor.

Further, by using the air conditioning with the air from the double floor together, it is possible to improve the responsiveness to the temperature change and to shorten the rise time of the room temperature.

According to this aspect, it is possible to provide an air conditioning system that facilitates layout changes and replacement work.

It is a schematic cross section showing a building provided with an air-conditioning system concerning this embodiment. It is a sectional view of the important section showing the air-conditioning system concerning this embodiment. It is an expanded sectional view showing a mat element. It is a top view showing zoning of an air-conditioning system of this embodiment. It is explanatory drawing which shows the state by which the mat element of this embodiment was connected. It is a control circuit diagram of the air-conditioning system of this embodiment. It is explanatory drawing which shows the living room space air-conditioned by the air conditioning system of this embodiment.

Hereinafter, the air conditioning system 10 according to the present embodiment will be described with reference to the drawings.

FIG. 1 is a diagram showing a building 12 including an air conditioning system 10. The air conditioning system 10 includes a radiant air conditioner 14 that uses the surface temperature of a ceiling surface and a blowout air conditioner 16 that uses temperature-controlled air. ing.

The upper floor and the lower floor of this building 12 are partitioned by a concrete slab 18 made of reinforced concrete. In the concrete slab 18, the upper surface 18A constitutes the floor side of the upper floor, and the lower surface 18B constitutes the ceiling side of the lower floor. A ceiling panel is not provided on the lower surface 18B of the concrete slab 18, and the lower surface 18B of the concrete slab 18 constitutes the ceiling surface of the lower floor.

(Radiation air conditioning)
As shown in FIG. 2, a rectangular mat element 20 is placed on the upper surface 18A of the concrete slab 18 (see FIG. 5 for the shape), and the mat element 20 has a lower surface as shown in FIG. Are fixed to the concrete slab 18 with an adhesive 22. A pipe 26 through which the heat medium 24 circulates is embedded in the mat element 20, and the pipe 26 is formed of polypropylene (PP) as an example.

As shown in FIG. 3, the mat element 20 includes a flat lower plate 30 forming a lower surface, a partition 32 fixed on the lower plate 30, and a flat upper plate 34 fixed on the upper part of the partition 32. It has and. The lower plate 30, the partition 32, and the upper plate 34 are made of a high heat conductive sheet, and the high heat conductive sheet can be made of a carbon sheet as an example.

A plurality of housing grooves 36 in which the pipes 26 are housed are extended in the partition section 32 in the lengthwise direction, and a bottom surface 36</b>A of the housing grooves 36 is fixed to the lower plate 30. The wall surface 36B of the accommodation groove 36 is configured by a mountain fold portion 36C that is folded in a mountain shape, and the adjacent accommodation groove 36 is defined by the mountain fold portion 36C. The top surface 36D of the mountain folding portion 36C is formed flat and is fixed to the upper plate 34.

The pipes 26 accommodated in the accommodating grooves 36 are arranged in parallel in the width direction, and the ends of the pipes 26 extending from the ends of the accommodating grooves 36 are connected to each other by a connecting pipe (not shown). ..

As a result, the heat medium 24 that has flowed in from the inflow portion 20A (see FIG. 6) of the connection pipe on the one end side of the mat element 20 passes through the pipes 26 accommodated in the respective accommodation grooves 36, and the outflow portion of the connection pipe on the other end side. 20B (see FIG. 6), and heat is transferred in a region where the heat medium 24 passes.

FIG. 4 is a plan view showing an air-conditioned floor, and the mat element 20 is arranged at a portion of the concrete slab 18 that constitutes the ceiling surfaces of the first chamber 38 to the sixth chamber 48.

On this floor, the first radiant air conditioning region 50 is formed by the mat elements 20 provided on the ceilings of the first chamber 38 and the second chamber 40, and is provided on the ceilings of the third chamber 42 and the fourth chamber 44. The matte element 20 forms a second radiant air conditioning region 52. The matte element 20 provided on the ceilings of the fifth chamber 46 and the sixth chamber 48 forms the third radiation air-conditioning region 54.

For example, as shown in FIG. 5, a plurality of mat elements 20 forming each of the radiant air-conditioning regions 50 to 54 are arranged in the length direction, and the outflow portion 20B of one mat element 20 and the inflow portion of the mat element 20 on the other side. 20A is connected in series by a hose 56. The series unit 58 in which the plurality of mat elements 20 are connected in series is arranged in parallel, and the outflow portion 20B at the terminal end of one series unit 58 and the inflow portion 20A at the starting end of the other series unit 58 are connected by the hose 56. It is connected in parallel.

Then, the heat medium 24 flows from the hose 56 connected to the inflow portion 20A at the start end of the one series unit 58, and the heat medium 24 flows from the hose 56 connected to the outflow portion 20B at the end end of the other series unit 58. To be leaked. As a result, the temperature control region by the mat element 20 is expanded in the length direction and the width direction.

FIG. 6 is a control circuit diagram showing the radiant air conditioner 14 of the air conditioning system 10. The air conditioning system 10 is a heat exchanger in which the heat medium 24 whose temperature is adjusted by a temperature adjusting device (not shown) is supplied via the solenoid valve 60. 62 is provided.

The heat medium 24 heat-exchanged by the heat exchanger 62 flows into the mat element 20 at the leading end of each of the radiant air-conditioning regions 50 to 54 via the outward path 70 including the three-way valve 63, the valve 64, the joint 66, and the valve 68. It flows into the section 20A.

Further, the heat medium 24 that has flowed out from the outflow portion 20B of the mat element 20 at the end of each of the radiation air-conditioning regions 50 to 54 exchanges heat via the return path 80 including the valve 72, the joint 74, the valve 76, and the pump 78. It is returned to the container 62. A part of the heat medium 24 from the pump 78 is supplied to the input port of the three-way valve 63.

In the outward path 70, the temperature of the heat medium 24 between the heat exchanger 62 and the three-way valve 63 is detected by the first temperature sensor 82, and the temperature of the heat medium 24 between the three-way valve 63 and the valve 64 is the second. It is detected by the temperature sensor 84. The internal temperature of the concrete slab 18 on which the mat element 20 is arranged is detected by the third temperature sensor 86, and the temperature of the lower surface 18B of the concrete slab 18 on which the mat element 20 is arranged is detected by the fourth temperature sensor 88. ..

The detection result of each of the temperature sensors 82 to 88 is input to the control device 90, and the control device 90 controls the opening degree of the solenoid valve 60 based on the detection result and heat-exchanges the heat medium 24 whose temperature is adjusted. The passing amount of the container 62 is adjusted. Further, the control device 90 controls the three-way valve 63 based on the detection result to adjust the return amount of the heat medium 24 returned from the return route 80 to the forward route 70. Further, the control device 90 controls the pump 78 and adjusts the heat exchange amount in the heat exchanger 62 based on the detection result.

Accordingly, the control device 90 controls the temperature of the lower surface 18B of the concrete slab 18 by controlling the temperature of the heat medium 24 supplied to the mat element 20 to reach the target temperature.

Specifically, when the radiant air conditioner 14 is used for heating, the control device 90 controls the target temperature of the heat medium 24 supplied to the mat element 20 to be 22° C. or higher and 30° C. or lower as an example. When the radiant air conditioner 14 is used for cooling, the control device 90 controls the target temperature of the heat medium 24 supplied to the mat element 20 to be 14° C. or higher and 16° C. or lower as an example.

FIG. 7 is a schematic diagram showing a room on the lower floor and a room on the upper floor with the ceiling surface being the lower surface 18B of the concrete slab 18 on which the mat element 20 is arranged.

When the average value of the temperature of the surface 92 facing the lower surface 18B side of the concrete slab 18 is taken as the indoor surface average temperature, the capability of the radiant air conditioning 14 using the mat element 20 is the same as the temperature of the lower surface 18B of the concrete slab 18 and the indoor It is determined by the temperature difference from the average surface temperature.

(Blowout air conditioning)
A double floor 100 is formed on the upper surface 18A side of the concrete slab 18, and the double floor 100 constitutes a so-called OA floor. The double floor 100 is provided with a blowout grill 102, and the conditioned air is blown out from the underfloor space 104 to the room 106 on the upper floor.

More specifically, as shown in FIG. 1, a suction device 108 that sucks the air in the room 106 is provided in the room that is conditioned by the outlet air conditioner 16. The air sucked by the suction device 108 is sent to the desiccant external air conditioner 112 installed on the rooftop via the outward path 110, and the desiccant external air conditioner 112 exchanges heat with the outside air and is dehumidified.

The air sent from the desiccant external air conditioner 112 via the return path 114 is supplied to the underfloor space 104 via the supply valve 116 and the fan motor 118, and is blown into the room 106 from the blowout grill 102 of the double floor 100. As a result, the blowout air conditioner 16 that air-conditions the target room by the air blown out from the underfloor space 104 is configured.

The temperature of the air supplied to the underfloor space 104 is controlled to reach the target temperature.

Specifically, when the blowout air conditioner 16 is used for heating, the target temperature of the air supplied to the underfloor space 104 is set to 30° C. as an example.

When the blowout air conditioner 16 is used for cooling, the target temperature of the air supplied to the underfloor space 104 is set to 18°C as an example. This target temperature is set so that the temperature difference from the target temperature of the heat medium 24 supplied to the mat element 20 does not become large, and the temperature difference is a temperature at which dew condensation does not occur in the pipe 26 of the mat element 20. Has been done.

The amount of air blown out from the blowout grill 102 can be varied by controlling the supply valve 116 and the fan motor 118. The opening degree of the supply valve 116 and the rotation speed of the fan motor 118 are controlled by an operation panel (not shown). It can be controlled by input.

As shown in FIG. 4, the blowout air conditioning 16 is provided in each of the chambers 38 to 48. The first floor 38 has a first floor blowout air conditioning area 120 and the second chamber 40 has a second floor blowout. The air conditioning area 122 is set. Further, a third floor outlet air conditioning area 124 is set in the third chamber 42, a fourth floor outlet air conditioning area 126 is set in the fourth chamber 44, and a fifth floor outlet air conditioning area 128 is set in the fifth chamber 46. In the sixth chamber 48, a sixth floor blowout air conditioning area 130 is set.

The blowout air conditioner 16 that air-conditions each of the chambers 38 to 48 is configured such that the amount of air blown out from the blowout grill 102 can be individually controlled by an operation panel provided in the corresponding chamber 38 to 48. It is possible to adjust the temperature every 48 times.

Then, the zoning of the first radiant air conditioning area 50 that is radiantly conditioned from the ceiling surface by the mat element 20, and the first floor air conditioning area 120 and the second floor air conditioning area 122 that is air conditioned by blowing air from the double floor 100. Zoning is common zoning.

Further, the zoning of the second radiation air conditioning area 52 and the zoning of the third floor blowing air conditioning area 124 and the fourth floor blowing air conditioning area 126 are common zoning. Further, the zoning of the third radiant air conditioning area 54 and the zoning of the fifth floor outlet air conditioning area 128 and the sixth floor outlet air conditioning area 130 are common zoning.

(Action/effect)
The operation of the present embodiment having the above configuration will be described.

By mounting the mat element 20 on the upper surface 18A of the concrete slab 18, the concrete slab 18 is cooled or heated by the heat medium 24 flowing through the pipe 26 embedded in the mat element 20. As a result, the room on the lower floor having the concrete slab 18 as the ceiling surface can be radiatively cooled in the summer and radiantly heated in the winter.

Then, the heat from the mat element 20 can be stored in the concrete slab 18. Therefore, the concrete slab 18 can be used as a base load.

Further, as compared with the configuration in which the pipe 26 through which the heat medium 24 flows is embedded in the concrete slab 18, the construction is easy. Furthermore, when changing the air conditioning target area, it is only necessary to change the place where the mat element 20 is placed.

Therefore, the air conditioning system 10 can easily change the layout of the chambers 38 to 48 and replace the mat element 20.

A double floor 100 is formed on the upper surface 18A side of the concrete slab 18, and the conditioned air is blown from the underfloor space 104 into the room 106.

As a result, the radiant heat from the ceiling and the conditioned air from the floor can efficiently cool and heat the room 106.

The double floor 100 is provided on the mat element 20 placed on the concrete slab 18. Therefore, the air whose temperature is controlled or cooled by the heat from the mat element 20 can be blown out, and the heat from the mat element 20 can be effectively used.

Further, the zoning of the first radiant air conditioning area 50 that is radiantly conditioned from the ceiling surface by the mat element 20, and the first floor air conditioning area 120 and the second floor air conditioning area 122 that is air conditioned by blowing air from the double floor 100. Zoning is common zoning.

Further, the zoning of each of the radiant air-conditioning areas 52 and 54 and the zoning of each of the floor blowout air-conditioning areas 124 to 130 are common zoning.

Thereby, the radiant air conditioning 14 by the mat element 20 can be supplemented by the air conditioning 16 blown out by the air from the double floor 100.

Further, by using the air conditioner 16 that blows out air from the double floor 100 together, it is possible to improve the responsiveness to temperature changes and reduce the rise time of room temperature.

10 Air Conditioning System 14 Radiant Air Conditioning 16 Outlet Air Conditioning 18 Concrete Slab 18A Upper Surface 18B Lower Surface 20 Mat Element 24 Heat Medium 26 Piping 50 First Radiant Air Conditioning Area 52 Second Radiant Air Conditioning Area 54 Third Radiant Air Conditioning Area 100 Double Floor 102 Grill 104 Underfloor Space 106 Indoor 120 First floor air conditioning area 122 Second floor air conditioning area 124 Third floor air conditioning area 126 Fourth floor air conditioning area 128 Fifth floor air conditioning area 130 Sixth floor air conditioning area

Claims (3)

A concrete slab whose upper surface is the floor side and whose lower surface is the ceiling side,
A mat element in which a pipe for placing a heat medium placed on the upper surface of the concrete slab is embedded,
Air conditioning system having. The air conditioning system according to claim 1, wherein a double floor is formed on the upper surface side of the concrete slab, and the conditioned air is blown into the room from the underfloor space. The air conditioning system according to claim 2, wherein the zoning of the radiant air conditioning that is radiantly conditioned from the ceiling surface by the mat element and the zoning of the blowout air conditioning that is conditioned by the air from the double floor are common.