JP3165610U - Thermal storage floor heating system - Google Patents

Abstract

A regenerative floor heating system capable of reducing installation cost and running cost. A regenerative floor heating system (1) drives a heat pump (5) using midnight power to heat a heat medium and circulate a heat medium circulating pipe (4) disposed in a concrete slab (2) of a house. At night, heat is stored in the plate heat storage body 3 buried in the concrete slab 2 in contact with the heat medium circulation pipe 4, and in the daytime, the room is heated by heat radiation from the plate heat storage body 3. . There is no need to install a heat medium tank for storing a heated heat medium such as hot water, and there is no need to circulate the heat medium through the heat medium circulation pipe during the day. Installation costs and running costs can be reduced as compared with the heating system. [Selection diagram] Fig. 1

Description

  The present invention relates to a heat storage type floor heating system configured using a heat pump and a plate-shaped heat storage body.

  As a floor heating system for buildings, for example, a residential floor heating system, a heat accumulator is placed under the floor, electric power is stored in the heat accumulator at night by an electric heater using midnight power, and heat is released from the heat accumulator during the day by indoors. What is heating is known. This floor heating system has the merit that running cost can be reduced because inexpensive midnight power is used.

  A system using a heat pump is known as a floor heating system. Since the floor heating system using the heat pump uses heat in the air, it is possible to obtain heat more than the input power, thereby reducing the running cost.

  In Patent Document 1, water is heated by a heat pump using inexpensive late-night power, hot water obtained by this is stored in a heat storage tank, and the hot water is circulated from the heat storage tank via a pipe arranged under the floor. A floor heating system is proposed. Since this floor heating system uses late-night power and a heat pump, it can be expected that the running cost will be significantly reduced.

JP 2005-55130 A

  However, in the heating system disclosed in Patent Document 1, if a heat storage tank having a sufficient capacity is not arranged, the amount of heat may be insufficient during the day, and the heat storage tank for circulating the heat medium and the heat medium circulation It is necessary to insulate the pipes sufficiently so that heat does not escape. For this reason, there exists a problem that installation cost is high. In addition, it is necessary to circulate the heat medium through heat storage tanks and pipes during the daytime, and when the amount of heat is insufficient, it is necessary to heat the heat medium by driving the heat pump, greatly increasing the running cost. In some cases, it is difficult to reduce it.

  The subject of this invention is providing the thermal storage type floor heating system which can reduce installation cost and running cost compared with the conventional floor heating system in view of such a point.

In order to solve the above problems, the regenerative floor heating system of the present invention is
A plurality of plate-like heat storage elements;
A heat-medium circulation pipe drawn around in contact with the front or back surface of each plate-like heat storage body;
A heat pump for circulating the heat medium in the heat medium circulation pipe and heating the heat medium;
It has a control panel that drives the heat pump using midnight power, circulates the heated heat medium to the heat medium circulation pipe, and puts each plate-like heat storage body into a heat storage state,
The plate-like heat storage body and the heat medium circulation pipe are arranged in the following state (a), (b) or (c).
(A) The said plate-shaped heat storage body is arrange | positioned by the predetermined space | interval in the floor slab made from a reinforced concrete, and the said heat-medium circulation pipe is drawn in the floor slab in the state which contact | connects the back surface of each plate-shaped heat storage body ( b) In a concrete layer or mortar layer of a certain thickness placed on a floor slab made of reinforced concrete, the plate-like heat storage bodies are arranged at a predetermined interval on the surface of the floor slab, and the heat medium circulation pipe is (C) Reinforced concrete that is fixed to a wire mesh placed parallel to the surface of the floor slab on the plate-like heat storage body and is in contact with the surface of each plate-like heat storage body In a concrete layer or mortar layer of a certain thickness placed on the floor slab, the heat medium circulation pipe is fixed to a wire mesh placed on the surface of the floor slab. Routed along the surface of the wire mesh, each of the plate-shaped heat storage member is riding at predetermined intervals on the heat medium circulation pipe with

  Here, as the plate-like heat storage body used in the present invention, a plate-shaped heat storage body in which a latent heat storage material that changes phase into a liquid phase and a solid phase by heat storage and heat dissipation is enclosed in a rectangular container having a constant thickness is used. Can do.

  Moreover, in the heat storage type floor heating system of this invention, when arrangement | positioning of said (a) is employ | adopted, it draws around in the state which mounted the heat-medium circulation pipe on the slab muscle of a floor slab, and each plate-shaped heat storage body Are placed at regular intervals along the length of the heat medium circulation pipe in a state of being placed on the heat medium circulation pipe, and by placing concrete in this state, the heat medium circulation pipe and the plate shape The heat storage body can be embedded in the floor slab. Therefore, the positioning of the heat medium circulation pipe and the plate-shaped heat storage body and the burying operation can be easily performed without using a dedicated member.

  Here, it is desirable to stack a layer of a heat insulating material on the back surface side of the floor slab because the utilization efficiency of heat radiation from the heat storage body can be increased.

  In the regenerative floor heating system of the present invention, the heat medium circulation pipe is driven at night by circulating the heat medium circulation pipe disposed in the floor slab by driving the heat pump using midnight power and heating the heat medium. Heat is stored in a plate-like heat storage body embedded in the floor slab in contact with the slab, and heating is performed by heat radiation from the plate-like heat storage body during the daytime.

  Therefore, according to the heat storage type floor heating system of the present invention, there is no need to install a heat medium tank for storing a heat medium such as hot water, and there is no need to circulate the heat medium in the heat medium circulation pipe during the daytime. . Therefore, the installation cost and the running cost can be reduced as compared with a conventional floor heating system using midnight power and a heat pump.

It is a schematic block diagram of the thermal storage type floor heating system to which this invention is applied. It is explanatory drawing which shows the example of arrangement | positioning of the heat-medium circulation pipe and heat storage body which are embed | buried under the floor slab in a thermal storage type floor heating system. It is a detailed view around the foundation of a house where the regenerative floor heating system of the present invention is installed. (A) And (b) is explanatory drawing which shows another structural example in the thermal storage type floor heating system to which this invention is applied.

  Embodiments of a regenerative floor heating system to which the present invention is applied will be described below with reference to the drawings.

  Referring to FIG. 1, a heat storage type floor heating system 1 according to the present embodiment includes, for example, a plurality of plate-like heat storage bodies 3 embedded in soil concrete 2 (floor slab) of a house, and each plate. A heat medium circulation pipe 4 having an embedded portion embedded in the soil concrete 2 in contact with the back surface of the heat storage body 3, and a heat medium such as an antifreeze liquid is circulated through the heat medium circulation pipe 4 and the heat medium is heated. And a control panel 6 for controlling the driving of each part. The control panel 6 drives the heat pump 5 using midnight power to heat the heat medium, and circulates the heated heat medium to the heat medium circulation pipe 4 so that each plate-like heat storage body 3 is in a heat storage state. It is possible to operate.

  The heat pump 5 includes a heat exchange unit 7 and an outdoor unit 8. A refrigerant circulation pipe 9 is routed between the heat exchange unit 7 and the outdoor unit 8. The refrigerant, for example, carbon dioxide, in the refrigerant circulation pipe 9 exchanges heat with the atmosphere in the heat exchanging section 11 where the intake fan 10 of the outdoor unit 8 is disposed, and absorbs heat from the atmosphere. After being compressed via the compressor 12 to be in a high heat state, the heat is supplied to the heat exchange unit 13 on the heat exchange unit 7 side.

  In the heat exchanging unit 13 on the heat exchange unit 7 side, heat exchange is performed between the high-temperature refrigerant flowing through the refrigerant circulation pipe 9 and the heat medium flowing through the heat medium circulation pipe 4 to heat the heat medium. The refrigerant that has dissipated heat by heat exchange expands through the expansion valve 14 disposed on the heat exchange unit 7 side and becomes cooler than the outside air temperature. In this state, the refrigerant again enters the heat exchange unit 11 of the outdoor unit 8. Reflux. By such a refrigerant cycle, the heat medium circulating through the heat medium circulation pipe 4 is heated.

  The heat medium circulation pipe 4 is, for example, a crosslinked polyethylene pipe, and the pipe embedded portion of the heat medium circulation pipe 4 embedded in the soil concrete 2 is branched into a plurality of branch circulation pipes 4a. It is in contact with the back surface of the plate-like heat storage body 3. In other words, each plate-like heat storage body 3 is placed on the branch circulation pipe 4a. Therefore, each plate-like heat storage body 3 is heated by circulating the heated heat medium to be in a heat storage state.

  Here, the plate-shaped heat storage body 3 has a configuration in which a latent heat storage material that changes into a liquid phase and a solid phase by heat storage and heat dissipation is enclosed in a flat rectangular container, and the latent heat storage material is solid-phased by heat storage. To the liquid phase, and the latent heat storage material returns to the solid phase again by heat radiation.

  FIG. 2 shows an arrangement example of the branch circulation pipe 4 a and the plate-like heat storage body 3 of the heat medium circulation pipe 4 embedded in the soil concrete 2. The branch circulation pipes 4a are placed on the vertical and horizontal slab bars 21 and 22 arranged at predetermined pitches in the vertical and horizontal directions before placing the soil concrete 2 so as to be arranged in parallel at regular intervals. On these branch circulation pipes 4a, the plate-shaped heat accumulators 3 are placed in rows at regular intervals along the pipe length direction. A plurality of rows of the plate-like heat storage bodies 3 are arranged as necessary. Thus, after installing the branch circulation pipe 4a and the plate-shaped heat storage body 3, the concrete is placed and the soil concrete 2 in which these are embedded is constructed.

  FIG. 3 is a detailed view around the foundation of a house in which the regenerative floor heating system 1 according to the present invention is laid. As shown in this figure, a moisture-proof sheet 23, for example, a moisture-proof polyethylene film is laid on the back side of the soil concrete 2, and a heat insulating material 24 having a certain thickness is laid on the bottom side of the soil concrete 2.

  FIGS. 4A and 4B are explanatory views showing two examples in the case where the plate heat storage body 3 and the heat medium circulation pipe 4 are laid on the soil concrete 2. In the example shown to Fig.4 (a), the plate-shaped heat storage body 3 is arrange | positioned on the soil concrete 2 at a fixed space | interval, and the wire mesh 31 is spread | laid horizontally on these plate-shaped heat storage bodies 3. Yes. On the wire mesh 31, the heat medium circulation pipe 4 is drawn so as to be in contact with the surface of each plate-like heat storage body 3, and is fixed to the wire mesh 31 by a binding bar. After laying the plate-like heat storage body 3 and the heat medium circulation pipe 4 in this way, a concrete or mortar protective layer 32 is placed thereon so as to be a layer having a constant thickness. For example, a floor finish 33 is laminated on the surface of the protective layer 32.

  In the example shown in FIG. 4B, the wire mesh 31 is laminated on the soil concrete 2, and the heat medium circulation pipe 4 is routed in a state of being fixed to the wire mesh 31. The plate-shaped heat accumulators 3 are arranged at predetermined intervals while being on the heat medium circulation pipe 4. After laying the plate-like heat storage body 3 and the heat medium circulation pipe 4 in this way, a concrete or mortar protective layer 32 is placed thereon so as to be a layer having a constant thickness. For example, a floor finish 33 is laminated on the surface of the protective layer 32.

1 Thermal storage floor heating system 2 Dust concrete (floor slab)
DESCRIPTION OF SYMBOLS 3 Plate-shaped thermal storage body 3a Rectangular container 4 Heat medium circulation pipe 4a Branch circulation pipe 5 Heat pump 6 Control panel 7 Heat exchange unit 8 Outdoor unit 9 Refrigerant circulation pipe 10 Intake fan 11 Heat exchange part 12 Compressor 13 Heat exchange part 14 Expansion valve 21 , 22 Slab muscle 23 Moisture-proof sheet 24 Insulation 31 Wire mesh 32 Protective layer (concrete, mortar)
33 Floor finish

Claims (4)

A plurality of plate-like heat storage bodies (3);
A heat medium circulation pipe (4) drawn around in contact with the front or back surface of each plate-like heat storage body (3);
A heat pump (5) for circulating the heat medium in the heat medium circulation pipe (4) and heating the heat medium;
A control panel that drives the heat pump (5) using midnight power and circulates the heated heat medium to the heat medium circulation pipe (4) to place each plate-like heat storage body (3) in a heat storage state. And
The said plate-shaped heat storage body (3) and the said heat-medium circulation pipe (4) are arrange | positioned in the state of following (a), (b) or (c), The thermal storage type floor heating system ( 1).
(A) The said plate-shaped heat storage body (3) is arrange | positioned in the floor slab (2) made from a reinforced concrete at predetermined intervals, and the said heat-medium circulation pipe (4) contacts the back surface of each plate-shaped heat storage body (3). (B) In the concrete layer or mortar layer of a certain thickness placed on the floor slab (2) made of reinforced concrete, the plate-like heat storage body (3 ) Are arranged at predetermined intervals on the surface of the floor slab (2), and the heat medium circulation pipe (4) is arranged on the plate heat storage body so as to be parallel to the surface of the floor slab (2). (C) Fixed thickness placed on the floor slab (2) made of reinforced concrete that is fixed to the wire mesh (31) and drawn in contact with the surface of each plate-like heat storage body (3) In concrete layer or mortar layer The heat-medium circulation pipe (4) is fixed to a wire mesh (31) disposed on the surface of the floor slab (2) and is routed along the surface of the wire mesh. ) Rides on the heat medium circulation pipe (4) at a predetermined interval. In claim 1,
The plate-shaped heat storage body (3) has a heat storage material sealed in a rectangular container (3a) having a constant thickness,
A heat storage type floor heating system (1), wherein the heat storage material is a latent heat storage material that changes into a liquid phase and a solid phase by heat storage and heat dissipation. In claim 1 or 2,
The plate-shaped heat storage body (3) and the heat medium circulation pipe (4) are arranged in the state (a),
The heat medium circulation pipe (4) is routed in a state of being placed on the slab reinforcement (21, 22) of the floor slab (2),
Each plate-like heat storage body (3) is disposed at a constant interval along the length direction of the heat medium circulation pipe (4) in a state of being placed on the heat medium circulation pipe (4).
In this state, the heat storage type floor heating system (1) is characterized in that the heat medium circulation pipe (4) and the plate heat storage body (3) are embedded in the floor slab (2) by placing concrete in this state. . In claim 1, 2 or 3,
A heat storage type floor heating system (1), wherein a layer of a heat insulating material (24) having a predetermined thickness is laminated on the back surface of the floor slab (2).

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