WO2024111668A1 - Radiant air conditioning device, radiant unit, and radiant air conditioning system - Google Patents

Abstract

A radiant air conditioning device 1 comprises: a heat exchange mat 2 that is disposed, in an area narrower than a ceiling surface 101a of a habitable room 100, with a first space provided between the heat exchange mat 2 and the ceiling surface 101a, and that has a plurality of heat exchange pipes 23 through which a heat medium flows substantially parallel to the ceiling surface 101a; and a fabric curtain member 3 that is disposed, in the area narrower than the ceiling surface 101a, with a second space provided between the curtain member 3 and the heat exchange mat 2, so as to be exposed as a radiant surface 3a on a side of the heat exchange mat 2, the side being opposite to the ceiling surface 101a, and that directly exchanges heat with the heat exchange mat 2.

Description

Radiant air conditioning device, radiant unit and radiant air conditioning system

The present invention relates to a radiant air conditioning device, a radiant unit, and a radiant air conditioning system.

In recent years, ceiling heating and cooling panels that use radiant air conditioning to cool and heat indoors have been proposed (see, for example, Patent Document 1).

The ceiling cooling and heating panel described in Patent Document 1 comprises a metal plate-shaped radiation panel (also called a metal panel), a resin heat exchange pipe through which a heat medium flows, and multiple metal holding members that partially fix the heat exchange pipe to the back surface of the radiation panel. This ceiling cooling and heating panel is used by laying multiple radiation panels with fixed heat exchange pipes on the ceiling side. With this ceiling cooling and heating panel, the metal panel is heated or cooled by flowing a heated or cooled heat medium through the heat exchange pipe, and the floor-side surface of the metal panel becomes a radiation surface that radiates or absorbs infrared rays, providing indoor radiant air conditioning.

Patent No. 5224171 Patent No. 5887577

However, conventional ceiling heating and cooling panels use metal panels as radiating members whose floor-facing surface is the radiating surface, metal members are used as holding members to secure the heat exchange pipes, and a lattice-like frame member (generally made of metal) is used to install multiple metal panels over the entire ceiling (see, for example, Patent Document 2), which makes the entire ceiling heating and cooling panel heavy, placing a strain on workers when transporting and installing it.

The objective of the present invention is therefore to provide a radiant air conditioning device, a radiant unit, and a radiant air conditioning system that can reduce the workload during transportation, installation, etc.

In order to solve the above-mentioned problems, the present invention provides a radiant air conditioning device comprising: a tubular member having a first space between itself and an indoor ceiling surface, arranged in an area narrower than the ceiling surface, and having a plurality of flow path portions through which a heat medium flows approximately parallel to the ceiling surface; and a cloth radiant member which exchanges heat directly with the tubular member, arranged in an area narrower than the ceiling surface, and having a second space between itself and the tubular member, and exposed as a radiant surface on the opposite side of the tubular member from the ceiling surface.
In addition, in order to solve the above-mentioned problems, the present invention provides a radiating unit comprising: a frame body formed in a rectangular shape so as to surround an inner region when viewed in a plane; a tubular member having a plurality of flow path portions through which a heat medium flows and attached to the frame body so as to be positioned in the inner region of the frame body; and a cloth radiating member attached to the frame body so as to be exposed as a radiating surface on one side of the tubular member with a space provided between the cloth and the tubular member, the cloth radiating member directly exchanging heat with the tubular member.
In addition, in order to solve the above-mentioned problems, the present invention provides a radiant air conditioning system comprising a plurality of the radiant air conditioning devices and a heat source unit that circulates the heat medium, the temperature and flow rate of which are controlled, through the tubular members of the plurality of radiant air conditioning devices.

The present invention provides a radiant air conditioning device, a radiant unit, and a radiant air conditioning system that can reduce the workload during transportation, installation, etc.

FIG. 1A is a front view showing an example of an installation state of a radiant air-conditioning device constituting a radiant air-conditioning system according to a first embodiment of the present invention. FIG. 1B is a cross-sectional view taken along line AA of FIG. 1A. FIG. 2 is a plan view of the radiant air-conditioning device shown in FIG. FIG. 3 is a diagram showing an example of the configuration of a heat exchange mat. FIG. 4 is a perspective view of a main part showing an example of a first mounting portion for mounting the first heat exchange mat and the second heat exchange mat. FIG. 5 is a perspective view of a main portion showing an example of a second mounting portion for mounting the curtain member. FIG. 6 is a block diagram showing an example of the configuration of the control device. FIG. 7 is a plan view illustrating an example of a path of the heat medium between the heat source unit and the heat exchange mat. FIG. 8 is a front view showing an example of an installation state of a radiant air-conditioning device constituting a radiant air-conditioning system according to the second embodiment of the present invention. FIG. 9A is a plan view of the radiant air-conditioning device shown in FIG. 8 . FIG. 9B is an enlarged view of part C in FIG. 9A. FIG. 10 is a perspective view of a main portion showing an example of an attachment portion of the heat exchange mat and the curtain member. FIG. 11A is a cross-sectional view taken along line EE in FIG. 12, showing an example of an installation state of a radiant air-conditioning device that constitutes a radiant air-conditioning system according to Modification 1. FIG. FIG. 11B is an enlarged view of part D in FIG. 11A. FIG. 12 is a plan view of the radiant air-conditioning device shown in FIG. 11A. FIG. 13 is a front view of a main part showing an example of an installation state of a radiant air-conditioning device constituting a radiant air-conditioning system according to the second modification. FIG. 14 is a plan view of a main portion showing the third modified example. FIG. 15 is a cross-sectional view of the curtain member according to the fourth modification taken along the line BB shown in FIG. 1A. FIG. 16 is a perspective view showing an example of a second mounting portion for mounting the curtain member according to the fourth modification. FIG. 17 is a front view of a radiant air-conditioning system according to the sixth modification. FIG. 18A is a plan view of the radiant air-conditioning device shown in FIG. 17. FIG. 18B is an enlarged view of part F in FIG. 18A. FIG. 19A is a perspective view illustrating a radiant air-conditioning device according to Modification 7 as viewed obliquely from above. FIG. FIG. 19B is a perspective view illustrating the radiant air-conditioning device according to Modification 7 as viewed obliquely from below. FIG. 19C is a perspective view that shows a schematic view of the radiant air-conditioning device in a state in which the roll-up curtain in FIG. 19A is lowered. FIG. 20 is a plan view of the unit of the radiant air-conditioning device shown in FIG. 19A. FIG. 21A is a cross-sectional view taken along line GG in FIG. FIG. 21B is an enlarged view of part H in FIG. 21A.

Below, an embodiment of the present invention will be described with reference to the drawings. In each drawing, components having substantially the same functions are given the same reference numerals and duplicated descriptions will be omitted.

[First embodiment]
Figures 1A, 1B and 2 show an example of the installation state of a radiant air conditioning device that constitutes a radiant air conditioning system according to the first embodiment of the present invention, where Figure 1A is a front view, Figure 1B is a cross-sectional view along line A-A in Figure 1A, and Figure 2 is a plan view.

1A, the symbols a and b indicate radiant heat (also called radiant heat) such as infrared rays and far infrared rays, and c indicates convection. The directions of the radiant heat a and b indicate the directions in the cooling operation mode, but are opposite to those in FIG. 1A in the heating operation mode. In this specification and drawings, X indicates the longitudinal direction of the heat exchange mat 2 and the curtain member 3 described later, Xa indicates one side of the longitudinal direction X (the left side in FIG. 1A and FIG. 2), and Xb indicates the other side of the longitudinal direction X (the right side in FIG. 1A and FIG. 2). Also, Y indicates the transverse direction perpendicular to the longitudinal direction X of the heat exchange mat 2 and the curtain member 3, Ya indicates one side of the transverse direction Y (the left side in FIG. 1B, the front side in FIG. 2), and Yb indicates the other side of the transverse direction Y (the right side in FIG. 1B, the back side in FIG. 2).

This radiant air conditioning system 10 includes, for example, a plurality of radiant air conditioning devices 1 (two in this embodiment) arranged in parallel in a room 100, and a heat source unit 11 that circulates a heat medium such as water, the temperature and flow rate of which is controlled and which is heated or cooled to a predetermined temperature, through a first heat exchange mat 2A and a second heat exchange mat 2B (hereinafter collectively referred to as "heat exchange mats 2") that constitute the radiant air conditioning device 1.

The radiant air conditioning system 10 also has the function of exchanging heat through radiation and convection (also called air current) to cool or heat the room 100. The room 100 is, for example, a bedroom or living room in a building such as a detached house, an apartment building, or a hospital. The indoor location in which the radiant air conditioning device 1 is installed may be an office building, a factory, a public facility, or the like, in addition to the room 100. The room 100 is one example of an indoor location.

The radiant air conditioning device 1 comprises a first heat exchange mat 2A arranged in an area narrower than the ceiling surface 101a with a first space (e.g., a distance of 300 mm at the center in the longitudinal direction X) Sa between the first heat exchange mat 2A and the surface of the ceiling 101a (hereinafter referred to as "ceiling surface 101a"); a second heat exchange mat 2B arranged in an area narrower than the ceiling surface 101a on the opposite side of the first heat exchange mat 2A from the ceiling surface 101a; and a cloth curtain member 3 arranged in an area narrower than the ceiling surface 101a with a second space (e.g., a distance of 200 mm at the center in the longitudinal direction X) Sb between the second heat exchange mat 2B and the second heat exchange mat 2B so that the opposite side of the second heat exchange mat 2B from the ceiling surface 101a is exposed as a radiation surface 3a that radiates or absorbs infrared rays.

1A, the second heat exchange mat 2B is illustrated as being in contact with the first heat exchange mat 2A, but as shown in FIG. 1B, it may be arranged so as not to be in contact with the first heat exchange mat 2A. Here, the first heat exchange mat 2A is an example of a first tubular member. The second heat exchange mat 2B is an example of a second tubular member. The curtain member 3 is an example of a radiation member. The first heat exchange mat 2A and the second heat exchange mat 2B are examples of tubular members having multiple flow path portions in layers in a direction facing the ceiling surface 101a (up and down direction). For example, the heat exchange mats 2 constituting the radiant air conditioning device 1 may be three or more, and the heat exchange pipes 23 described later may be arranged in layers in a direction facing the ceiling surface 101a (up and down direction). The heat exchange pipes 23 are an example of a flow path portion. Also, one heat exchange mat 2 may be used without arranging the heat exchange mats 2 in layers. This is the same in other embodiments and modified examples.

The radiant air conditioning system 10 also includes an air conditioner or other air conditioner that generates air with regulated temperature and humidity, a dew point temperature sensor 91 that detects the dew point temperature around the first heat exchange mat 2A or the second heat exchange mat 2B of one of the two radiant air conditioning devices 1, and a control device 9 (described below) that controls the temperature based on the dew point temperature detected by the dew point temperature sensor 91. The air conditioner 8 is an example of an airflow generating unit. Note that the air conditioner 8 is not an essential component, and may not be provided depending on the occurrence of condensation. The air conditioner 8 may also generate air with at least one of the temperature and humidity regulated.

In order to suppress the occurrence of condensation over a wide range, as shown in FIG. 2, the dew point temperature sensor 91 is placed near the heat exchange mat 2 far from the indoor unit of the air conditioner 8, but the dew point temperature sensor 91 may be placed on both the heat exchange mat 2 closer to the indoor unit of the air conditioner 8 and the heat exchange mat 2 farther away, and the average value of the two detected dew points may be used. In addition, in this embodiment, as shown in FIG. 2, two beds 110 are placed, but one bed 110 may be placed. In this case, in order to suppress the occurrence of condensation closer to the bed 110, the dew point temperature sensor 91 may be placed near the heat exchange mat 2 closer to the bed 110. In addition, in FIG. 1, the dew point temperature sensor 91 is placed near the second heat exchange mat 2B, but it may be placed near the first heat exchange mat 2A, or it may be placed near both the first heat exchange mat 2A and the second heat exchange mat 2B, and the average value of the two detected dew points may be used.

The air conditioner 8 is equipped with an approximately box-shaped housing 80 as an indoor unit, a fan 81 arranged inside the housing 80 to blow air whose temperature and humidity have been adjusted, an outlet 82 that blows out the air blown from the fan 81 as an airflow, and airflow control plates 83a, 83b arranged around the outlet 82 that generate the air blown from the fan 81 as an airflow d, pass the airflow d along the radiation surface 3a of the curtain member 3, and blow it toward the heat exchange mat 2 through the opening of the curtain member 3. The air conditioner 8 is further equipped with an outdoor unit (not shown) that is installed outdoors and exchanges heat between the refrigerant from the indoor unit and the outdoor air, and a remote controller (not shown). The air conditioner 8 is also configured so that the remote controller can be used to instruct the air conditioner 8 to be turned on and off and to set the temperature and humidity of the air blown out. As shown in FIG. 2, the airflow d blown out from the air conditioner 8 flows not only toward the nearby curtain member 3 but also toward the adjacent curtain member 3. If there is a risk of condensation forming on the surface of the heat exchange pipe 23 of the heat exchange mat 2 during cooling operation mode, etc., the formation of condensation on the surface of the heat exchange pipe 23 may be suppressed by controlling one or both of the temperature and humidity of the airflow d blown toward the heat exchange mat 2, or by controlling the temperature of the heat medium supplied from the heat source unit 11 to the heat exchange mat 2 by the control unit 90 described later.

In this embodiment, as shown in FIG. 2, two beds 110 are arranged on the surface of the floor 103 (hereinafter referred to as the "floor surface 103a") in the living room 100, and the radiant air conditioning device 1 is arranged above each bed 110. Note that a futon may be used instead of the bed 110. Here, the bed 110 and the futon are examples of bedding. Also, the bed 110 is a single bed in the figure, but it may be a semi-double bed or a double bed. The heat exchange mat 2 and the curtain member 3 have a larger area than the bed 110 in a plan view. Note that the heat exchange mat 2 and the curtain member 3 may have an area (overall length x width) corresponding to the area of the bed 110 (overall length x width), that is, an area approximately equal to the area of the bed 110. The area approximately equal means that the length and width are allowed to differ by about 30%. Also, the heat exchange mat 2 and the curtain member 3 are not limited to a rectangle long in the longitudinal direction X in a plan view, but may be a square. This is the same in other embodiments and modified examples.

As shown in FIG. 1B, the second heat exchange mat 2B is arranged on one side Ya in the short side direction Y with respect to the first heat exchange mat 2A, shifted by 1/2 the interval of the heat exchange pipes 23 described later. This increases the area of the heat exchange pipes 23 facing the floor surface 103a (projected area on the floor surface 103a), so that the radiation component can be increased by about 1.6 times compared to a configuration in which the second heat exchange mat 2B is not shifted in the short side direction Y. The heat exchange pipes 23 are arranged approximately parallel to the ceiling surface 101a so that the heat medium flows approximately parallel to the ceiling surface 101a. Approximately parallel does not mean parallel in the strict sense, but means that a tilt of several degrees is allowed, and also means that when both ends of the heat exchange pipes 23 are supported, the heat exchange pipes 23 are allowed to take a shape along a catenary due to gravity.

In order to achieve high radiation performance, the curtain member 3 preferably has an emissivity of 70% or more and a thermal conductivity of 0.3 W/(m·K) or more. In addition, in order not to impede the passage of convection current c and air current d, the curtain member 3 preferably has an opening rate of 3% or more, and more preferably 10% or more. Examples of such curtain members 3 that can be used include silk cloth made of 100% silk, a slit sheet made of resin mainly composed of polyethylene, linen cloth made of 100% hemp, and cupra made of 100% cotton. Note that a mixture of multiple types of silk, resin, linen, cotton, etc. may also be used.

(Attachment structure of heat exchange mat and curtain member)
The radiant air-conditioning device 1 also includes a plurality of (e.g., two) first mounting portions 4A for mounting both ends of the first heat exchange mat 2A and the second heat exchange mat 2B in the longitudinal direction X to the wall 102, and a plurality of (e.g., two) second mounting portions 4B for mounting both ends of the curtain member 3 in the longitudinal direction X to the wall 102. The first mounting portion 4A and the second mounting portion 4B are examples of arrangement portions for arranging the mounting portions, the first heat exchange mat 2A, the second heat exchange mat 2B, and the curtain member 3 indoors. The wall 102 is an example of a side wall indoors.

The first mounting portion 4A comprises a pair of wall mounting members 40 attached to the wall 102, and a mat mounting member 41 that attaches the first heat exchange mat 2A and the second heat exchange mat 2B to the pair of wall mounting members 40 while applying tension to the first heat exchange mat 2A and the second heat exchange mat 2B in the longitudinal direction X. The second mounting portion 4B comprises a pair of wall mounting members 40 attached to the wall 102, and a curtain mounting member 42 that attaches the curtain member 3 to the pair of wall mounting members 40 while applying tension to the curtain member 3 in the longitudinal direction X. Details of the first mounting portion 4A and the second mounting portion 4B will be described later with reference to Figures 4 and 5. The arrangement section arranges the first heat exchange mat 2A, the second heat exchange mat 2B, and the curtain member 3 in the living room 100 so that the airflow generated by the temperature difference in the living room 100 can pass through the first space Sa, the second space Sb, the third space Sc, and the fourth space Sd on the floor surface 103a side of the curtain member 3 by providing a third space Sc between the first heat exchange mat 2A, the second heat exchange mat 2B, and the curtain member 3. Note that tension may be applied to the curtain member 3 only in the short direction Y, or tension may be applied in the long direction X and the short direction Y. This is the same in other embodiments and modified examples. In addition, the middle part of the long direction X of the first heat exchange mat 2A and the second heat exchange mat 2B may be supported. This is the same in other embodiments and modified examples.

(Configuration of heat source machine)
The heat source unit 11 includes, for example, a compressor, a condenser, an evaporator, a motor, and the like, and is configured to switch between a cooling operation mode and a heating operation mode by reversing the flow of the refrigerant using a four-way valve. The heat source unit 11 is connected to the first heat exchange mat 2A and the second heat exchange mat 2B via a supply line 12 and a return line 13.

The heat source unit 11 supplies cooled heat medium to the first heat exchange mat 2A and the second heat exchange mat 2B via the supply line 12 during cooling operation mode, and supplies heated heat medium to the first heat exchange mat 2A and the second heat exchange mat 2B via the supply line 12 during heating operation mode. The heat medium that has passed through the first heat exchange mat 2A and the second heat exchange mat 2B returns to the heat source unit 11 via the return line 13. Note that, although one heat source unit 11 is provided for multiple radiant air conditioning devices 1 in the figure, a heat source unit 11 may be provided for each radiant air conditioning device 1.

(Configuration of heat exchange mat)
FIG. 3 is a diagram showing an example of the configuration of the heat exchange mat 2. The heat exchange mat 2 includes a supply side main pipe 20 arranged on one side Xa in the longitudinal direction X, where the heat medium is supplied, a turn-back side main pipe 21 arranged on the other side Xb in the longitudinal direction X, i.e., on the side where the heat medium is turned back, a return side main pipe 22 arranged on one side Xa in the longitudinal direction X, where the heat medium returns, a plurality of heat exchange pipes 23 connecting the supply side main pipe 20 and the return side main pipe 22 to the turn-back side main pipe 21, and a plurality of holding members 24 for holding the intervals between the heat exchange pipes 23. Note that the holding members 24 may not be provided. The arrows shown in FIG. 3 indicate the flow of the heat medium. Here, the supply side main pipe 20 and the return side main pipe 22 are examples of the first main pipe. The turn-back side main pipe 21 is an example of the second main pipe.

The heat exchange mat 2 is made of a thermoplastic resin such as polypropylene, and is assembled by extruding the supply side main pipe 20, the turn-back side main pipe 21, the return side main pipe 22, and the heat exchange pipe 23, and welding them together. The heat exchange mat 2 may also be integrally formed by injection molding or the like. The supply side main pipe 20, the turn-back side main pipe 21, and the return side main pipe 22 have inner diameters larger than the inner diameter of the heat exchange pipe 23.

In order to increase the surface area of the heat exchange pipes 23 and achieve high radiation performance, it is preferable to reduce the pitch and increase the number of pipes. The pitch of the heat exchange pipes 23 is preferably 10 to 50 mm, for example, and more preferably 10 to 20 mm. The heat exchange mat 2 has an overall opening rate of approximately 10 to 94% due to the presence of gaps between adjacent heat exchange pipes 23. For example, if the outer diameter of the heat exchange pipes 23 is 3.4 mm and the pitch is 8 to 20 mm, the opening rate is 58 to 83%.

Thermoplastic resin, which is the material of the heat exchange mat 2, has a lower thermal conductivity than metal, so it is necessary to mold the heat exchange pipe 23 to have a thin wall thickness. In addition, it is necessary to mold the outer diameter of the heat exchange pipe 23 to be thin in order to maintain strength against internal pressure. For this reason, the outer diameter of the heat exchange pipe 23 is preferably, for example, 3 to 15 mm, and more preferably 3 to 8 mm.

The supply side main pipe 20 has a supply port 20a at one end. The return side main pipe 22 has an exhaust port 22a at one end. The supply line 12 is connected from the heat source unit 11 to the supply port 20a of the supply side main pipe 20. The return line 13 is connected from the heat source unit 11 to the exhaust port 22a of the return side main pipe 22. Note that the supply side main pipe 20, the return side main pipe 22, and the turn back side main pipe 21 are arranged parallel to each other, but they do not have to be parallel. The supply side main pipe 20 and the return side main pipe 22 may be connected at their opposing end faces.

By arranging the supply side main pipe 20 with the supply port 20a and the return side main pipe 22 with the discharge port 22a on the same side (one side Xa) opposite the return side main pipe 21, the distance of the supply line 12 and the return line 13 connected to the heat source unit 11 can be shortened, and the piping path can be shortened to reduce weight and the burden of installation work can be reduced.

(Configuration of mounting part for mounting heat exchange mat)
4 is a perspective view showing an example of a first mounting part 4A for mounting the first heat exchange mat 2A and the second heat exchange mat 2B. The figure shows the first mounting part 4A for mounting the end parts of the first heat exchange mat 2A and the second heat exchange mat 2B on the other side Xb in the longitudinal direction X to the wall 102. The first mounting part 4A for mounting the end parts of the first heat exchange mat 2A and the second heat exchange mat 2B on one side Xa in the longitudinal direction X to the wall 102 has the same configuration as that shown in the figure.

The first mounting portion 4A includes a pair of wall mounting members 40 that are attached to the wall 102 with screws 40a or the like, and a mat mounting member 41 that attaches the first heat exchange mat 2A and the second heat exchange mat 2B to the pair of wall mounting members 40 while applying tension to the first heat exchange mat 2A and the second heat exchange mat 2B along the longitudinal direction X. Since the direction of the tension applied to the heat exchange mat 2 is aligned with the direction of the heat exchange pipe 23 (longitudinal direction X), deformation or damage to the heat exchange pipe 23 can be suppressed.

The mat mounting member 41 comprises a pipe 410 fixed to the circumferential surface of the folded-back main pipe 21 of the first heat exchange mat 2A on the upper layer with a cable tie 411 such as a tie wrap or string, a wire 412 that passes through the inside of the pipe 410, a fixing part 413 that inserts the wire 412 through the opening 40b of one wall mounting member 40 and fixes its end, and an adjustment part 414 that inserts the other end of the wire 412 through the opening 40b of the other wall mounting member 40 and fixes its end so that the length of the wire 412 between the pair of wall mounting members 40 can be adjusted.

In the figure, the folded-back main pipe 21 of the lower second heat exchange mat 2B is also fixed at the same time with a cable tie 411. By adjusting the length of the wire 412 between the pair of wall mounting members 40, the tension applied to the first heat exchange mat 2A and the second heat exchange mat 2B can be adjusted. By mounting the first heat exchange mat 2A and the second heat exchange mat 2B to the wall mounting member 40 with the mat mounting member 41, the first heat exchange mat 2A and the second heat exchange mat 2B are arranged along the catenary line.

(Configuration of mounting portion for mounting curtain member)
5 is a perspective view of a main portion showing an example of a second mounting portion 4B for mounting the curtain member 3. The figure shows the second mounting portion 4B for mounting an end portion on the other side Xb in the longitudinal direction X of the curtain member 3 to a wall 102. The second mounting portion 4B for mounting an end portion on one side Xa in the longitudinal direction X of the curtain member 3 to the wall 102 has a similar configuration to that shown in the figure.

The second mounting portion 4B includes a pair of wall mounting members 40 that are attached to the wall 102 with screws 40a or the like, and a curtain mounting member 42 that attaches the curtain member 3 to the pair of wall mounting members 40 while applying tension to the curtain member 3 along the longitudinal direction X.

The curtain mounting member 42 includes a pipe 420 that is inserted into the inside of the bag-shaped end 3b of the curtain member 3 in the longitudinal direction X, a wire 422 that is inserted into the inside of the pipe 420, a fixing part 423 that inserts the wire 422 into the opening 40b of one wall mounting member 40 and fixes the end, and an adjustment part 424 that inserts the other end of the wire 422 into the opening 40b of the other wall mounting member 40 and fixes the end so that the length of the wire 422 between the pair of wall mounting members 40 can be adjusted by adjusting the length of the wire 422 between the pair of wall mounting members 40. The tension applied to the curtain member 3 can be adjusted, and the distance between the heat exchange mat 2 can be adjusted. By attaching the curtain member 3 to the wall mounting member 40 with the curtain mounting member 42, the curtain member 3 is shaped along the catenary.

(Configuration of the control device)
6 is a block diagram showing an example of the configuration of the control device 9. The control device 9 includes a control unit 90, a dew point temperature sensor 91 connected to the control unit 90, and an operation unit 92.

The control unit 90 includes a memory in which programs, various data, etc. are stored, and a CPU that controls the heat source unit 11 by operating according to the program. The control unit 90 controls the temperature of the heat medium sent from the heat source unit 11 to the heat exchange mat 2 based on a table stored in the memory that indicates the relationship between the temperature at the time of sending out the heat medium and the dew point temperature, so that the temperature around the heat exchange mat 2 does not exceed the dew point temperature detected by the dew point temperature sensor 91.

The dew point temperature sensor 91 may be, for example, a mirror-cooled type or a capacitance type dew point temperature sensor. The operation unit 92 may be, for example, a touch panel display, and is configured so that the control unit 90 can switch the four-way valve of the heat source unit 11 to switch between the cooling operation mode and the heating operation mode by operating a button displayed on the touch panel display.

(Operation of the First Embodiment)
Next, an example of the operation of the radiant air-conditioning system 10 according to the first embodiment will be described with reference to Fig. 7. Fig. 7 is a plan view showing an example of a path of the heat medium between the heat source unit 11 and the heat exchange mat 2. In Fig. 7, the arrows indicate the direction in which the heat medium flows. Note that the holding member 24 is not shown.

The heat medium, the temperature and flow rate of which are controlled, is introduced from the heat source unit 11 through the supply line 12 into the supply port 20a of the supply side main pipe 20 of the two first heat exchange mats 2A located in the upper layer and the two second heat exchange mats 2B located in the lower layer. After that, as shown by the arrow in FIG. 7, the heat medium flows toward the end of the supply side main pipe 20 opposite the supply port 20a and branches into each heat exchange pipe 23. The heat medium branched into each heat exchange pipe 23 turns back at the turn-back side main pipe 21 and branches again into each heat exchange pipe 23. The heat medium branched into each heat exchange pipe 23 joins the return side main pipe 22 and returns to the heat source unit 11 through the return line 13 from the discharge port 22a of the return side main pipe 22. While the heat medium passes through the heat exchange pipe 23, heat exchange takes place in the heat exchange pipe 23.

While heat exchange is taking place in the heat exchange pipe 23, for example, in the cooling operation mode, as shown in Figure 1A, radiant heat a is radiated from the person P towards the curtain member 3, and radiant heat b is radiated from the curtain member 3 towards the heat exchange pipe 23. Also, as shown in Figure 1A, due to the temperature difference within the living room 100, convection current c occurs between the heat exchange pipes 23 of the first heat exchange mat 2A and the second heat exchange mat 2B and through the opening of the curtain member 3. For example, when cold water is supplied as a heat medium to the first heat exchange mat 2A and the second heat exchange mat 2B in the cooling operation mode, the air around the first heat exchange mat 2A and the second heat exchange mat 2B is cooled, and the density of the surrounding air increases and it descends, and as this continues, convection current c occurs as a downward air current. The curtain member 3 is cooled by convection c from the first heat exchange mat 2A and the second heat exchange mat 2B and radiant heat b to the first heat exchange mat 2A and the second heat exchange mat 2B, and the radiant heat a from the person P is absorbed by the radiant surface 3a of the curtain member 3. The person P sleeping in the bed 110 in the living room 100 not only absorbs the radiant heat a, but also receives the convection c through the opening of the curtain member 3. The person P may also be subjected to the convection c passing around the curtain member 3.

(Effects of the First Embodiment)
The radiant air-conditioning system 10 according to the first embodiment provides the following advantages.

(a) Since the conventional metal panel that supports the heat exchange mat 2 from the underside is not used, it is lightweight and easy to handle. This reduces the workload when transporting and installing the radiant air-conditioning device 1, and reduces costs and construction time. For example, if the unit weight of the conventional metal panel is 1.94 kg/ ^m2 , the unit weight of the frame member supporting the metal panel is 1.30 kg/ ^m2 , the unit weight of the heat exchange mat 2 is 1.09 kg/ ^m2 , the unit weight of the curtain member 3 (0.004 kg/ ^m2 ) is small and therefore ignored, and the unit weight of the first mounting portion 4A and the second mounting portion 4B (0.8 kg) converted into a unit weight equivalent to the heat exchange mat 2 is 0.4 kg/ ^m2 , then the total unit weight of the conventional system/the total unit weight of the present embodiment=(1.94+1.30+1.09)/(1.09+0.4)=2.91, and the unit weight of the present embodiment can be reduced to about one third of the conventional system. Furthermore, by arranging the radiant air-conditioning device 1 not on the entire ceiling but on an area corresponding to the area of the bedding, the overall weight can be reduced.

(b) Compared to a configuration using a conventional metal panel, the total capacity (total cooling capacity or total heating capacity) is higher. As a result, the water supply temperature can be relaxed (higher when cooling and lower when heating) compared to when this embodiment has the same capacity as a conventional metal panel. For example, the water supply temperature of 16°C can be relaxed to 18-20°C in cooling operation mode. As a result, high indoor dehumidification capacity is not required as a countermeasure against condensation, or low dehumidification capacity is sufficient, realizing cost savings and energy savings in dehumidification. Furthermore, energy savings can be achieved by improving the operating efficiency of the heat source unit 11.

(c) In cooling operation mode, the person P sleeping in the bed 110 not only absorbs radiant heat a, but also receives convection current c through the openings in the curtain member 3, providing comfortable radiant air conditioning. In other words, the convection component relative to the total capacity (total cooling capacity or total heating capacity) is increased compared to a conventional configuration using metal panels, making it possible to provide an environment in which the person P feels comfortable (for example, an environment in which the predicted average thermal sensation declared PMV is -0.5<PMV<+0.5). In addition, the breeze-like air current creates fluctuations in the sleeping space, which has the effect of relieving fatigue (for example, see Kajimoto Osami, "All Fatigue is Caused by the Brain 2," Shueisha, published December 21, 2016, p. 117, etc.).

(d) By blowing the airflow d of air whose temperature and/or humidity have been adjusted, discharged from the air conditioner 8, toward the heat exchange mat 2 through the curtain member 3, the dew point temperature around the heat exchange pipe 23 of the heat exchange mat 2 can be increased, and the occurrence of condensation around the heat exchange mat 2 during cooling operation mode can be suppressed.

[Second embodiment]
Figures 8, 9A and 9B show an example of the installation state of a radiant air-conditioning device constituting a radiant air-conditioning system according to a second embodiment of the present invention, with Figure 8 being a front view, Figure 9A being a plan view, and Figure 9B being an enlarged view of part C in Figure 9A. In contrast to the first embodiment, this embodiment has one bed 110 placed in a living room 100 and is provided with a curtain 6 surrounding the space between the bed 110 and the opposing curtain member 3 (hereinafter referred to as the "sleeping space"). Below, the differences from the first embodiment will be mainly described.

As in the first embodiment, this radiant air conditioning system 10 includes two radiant air conditioning devices 1 arranged in parallel in a room 100, a heat source unit 11 that supplies a heat medium such as water heated or cooled to a predetermined temperature to a first heat exchange mat 2A and a second heat exchange mat 2B that constitute the radiant air conditioning device 1, and an air conditioner 8.

The radiant air conditioning system 10 also includes a frame 5 arranged on the floor surface 103a so as to surround the bed 110, and a curtain 6 supported by the frame 5. That is, as shown in FIG. 8, one bed 110 is arranged on the floor surface 103a in the living room 100, one of the two radiant air conditioning devices 1 is arranged above the bed 110, and the other radiant air conditioning device 1 is arranged adjacent to one of the radiant air conditioning devices 1. The sleeping space above one of the beds 110 is surrounded by a curtain 6. The air conditioner 8 is arranged on the side of one of the radiant air conditioning devices 1 surrounded by the curtain 6 so that the person P is less susceptible to the effects of the blown air flow d. Note that multiple beds 110 may be arranged in the living room 100, and each may be surrounded by a curtain.

The second heat exchange mat 2B may be arranged close to the first heat exchange mat 2A (e.g., less than 50 mm at the center in the longitudinal direction X), or may be arranged with a predetermined distance between the first heat exchange mat 2A and the second heat exchange mat 2B (e.g., 50 to 150 mm at the center in the longitudinal direction X). As shown in FIG. 8, the airflow d discharged from the air conditioner 8 not only passes along the radiation surface 3a of the curtain member 3, but is also blown toward the second heat exchange mat 2B and the first heat exchange mat 2A through the openings in the curtain member 3, and then flows toward the other side Xb in the longitudinal direction X along the first heat exchange mat 2A and the second heat exchange mat 2B.

The dew point temperature sensor 91 is disposed between the second heat exchange mat 2B and the curtain member 3, as in the first embodiment, but it may also be disposed between the first heat exchange mat 2A and the second heat exchange mat 2B, or between the ceiling surface 101a and the first heat exchange mat 2A.

(Frame Composition)
The frame 5 includes an upper frame 50 and four column frames 51 that support the four corners of the upper frame 50 from the floor surface 103a. The upper frame 50 is configured to be rectangular in plan view. The upper frame 50 and the column frames 51 are formed of a metal material such as aluminum. For example, the upper frame 50 and the column frames 51 may use square or round pipe members for weight reduction. The upper frame 50 and the column frames 51 are connected by a known connection method such as welding or bolt fastening. The upper frame 50 may have a structure in which the four corners are curved in plan view. Although the frame 5 is supported from the floor surface 103a, the upper frame 50 may be supported from the ceiling 101 or the wall 102 without using the column frames 51.

(Curtain configuration)
The curtain 6 is, for example, a horizontally pulling curtain, and includes a curtain rail 60 attached to the lower surface of the upper frame 50, and a curtain fabric 61 hung by a hanging device so as to be able to open and close from the curtain rail 60. The hanging device includes a roller that moves on the curtain rail 60, and a fixing part that fixes the curtain fabric 61.

The curtain rail 60 is configured so that, in a plan view, it has a rectangular shape with four curved corners. The curtain fabric 61 may be, for example, a single piece that separates the entire perimeter, or multiple pieces that separate the entire perimeter.

The material of the curtain fabric 61 is preferably one that has the function of blocking or suppressing the intrusion of radiant heat and air currents from the outside into the sleeping space. The material of the curtain fabric 61 may be, for example, chemical fibers such as polyester and acrylic, natural materials such as silk, cotton, and linen, or a lace material.

Note that, in addition to the above-mentioned horizontally-pulled curtain, the partition member forming the sleeping space may be a roll-up curtain or a plate member. A roll-up curtain is configured, for example, so that the curtain can be rolled up and pulled out from a winding shaft. In addition, when blocking or suppressing radiant heat from sunlight, the curtain fabric 61 may be provided only on the side exposed to sunlight, and when blocking or suppressing air currents from outside, such as an air conditioner, the curtain fabric 61 may be provided only on the side where the air current enters the sleeping space. In addition, the curtain fabric 61 may be omitted on the side where the bed 110 is closest to the wall 102 (the other side Xb in the longitudinal direction X and the other side Yb in the transverse direction Y in the case shown in FIG. 9).

(Configuration of mounting part)
10 is a perspective view of a main part showing an example of an attachment part of the heat exchange mat 2 and the curtain member 3. The figure shows an attachment part 4C for attaching the end parts of the heat exchange mat 2 and the curtain member 3 on the other side Xb in the longitudinal direction X to the wall 102. The attachment part 4C for attaching the end parts of the heat exchange mat 2 and the curtain member 3 on one side Xa in the longitudinal direction X to the wall 102 is also configured in the same manner as in the figure. The attachment part 4C is for attaching the first heat exchange mat 2A, the second heat exchange mat 2B, and the curtain member 3 to the wall 102. The attachment part 4C is an example of an arrangement part.

The mounting portion 4C is arranged on both ends of the first heat exchange mat 2A, the second heat exchange mat 2B, and the curtain member 3 in the longitudinal direction X, and includes three pipes 430 along the transverse direction Y, a commercially available pipe fixing device 431 for fixing both ends of each pipe 430 to the wall 102, and a plurality of cable ties 432 such as tie wraps and strings for fixing the folded-back main pipe 21 of the heat exchange mat 2 to the pipe 430. The pipe fixing device 431 includes a base portion having an opening for fixing to the wall 102 with a screw or the like, and a gripping portion for gripping the pipe 430. The cable ties 432 fix both ends of the pipe 430, but may also fix multiple points between the ends. The pipe 430 may be a commercially available pipe made of a metal such as aluminum or a resin such as polyvinyl chloride (PVC). In addition, a solid round bar or square bar made of a metal, resin, wood, or the like may be used instead of the pipe 430.

(Effects of the Second Embodiment)
The radiant air-conditioning system 10 according to the second embodiment has the following advantages.
(a) As with the first embodiment, the present invention is lightweight and easy to handle, the temperature of the water supplied can be moderated, and an environment in which the person P can feel comfortable can be provided.
(b) The two radiant air-conditioning devices 1 can perform radiant air-conditioning for the entire living room 100, and the curtains 6 can be used to create a space that blocks or suppresses radiant heat and air currents from the sides (excluding the gap between the top end of the curtains 6 and the curtain member 3) of the sleeping space above the bed 110. For example, by surrounding the periphery of the bed 110 with the curtains 6, it is possible to block or suppress radiant heat (e.g., radiant heat from sunlight) and air currents (e.g., air currents from the air conditioner 8 or other air conditioners) from the sides other than those of the heat exchange mat 2 and the curtain member 3, ensuring an ideal sleeping space.

(Summary of Effects of the Embodiments)
A comparison of the effects of the first and second embodiments and the conventional example will be described with reference to Table 1. Table 1 shows a comparison of the effects of the conventional example using a metal panel as a radiation member, the first embodiment, the second embodiment, Reference Example 1 in which the first embodiment does not use the curtain member 3, and Reference Example 2 in which the first embodiment uses one heat exchange mat 2 and does not use the curtain member 3.

The effect items compared were "total capacity," "radiation component," "radiation effect on people," "supply water temperature," and "condensation prevention." "Total capacity" refers to total cooling capacity or total heating capacity. "Radiation component" refers to the ratio of radiation component to total capacity. "Radiation effect on people" refers to the radiation component acting on person P. "Supply water temperature" refers to the temperature when the supply water temperature is adjusted so that the total cooling capacity is the same under the same indoor temperature, humidity, and flow rate. "Condensation prevention" refers to the difficulty of condensation occurring. The degree of effectiveness is indicated in order of effectiveness with A, B, C, D, and E. In Table 1, a circle indicates that the component is used, and a cross indicates that the component is not used. The parentheses for "air conditioner" and "condensation prevention" indicate the case where air conditioner 8 is OFF.

(a) According to the first and second embodiments, since two heat exchange mats 2 are used, the total capacity can be set to rank B, which is higher than rank D of Reference Example 2 (one heat exchange mat 2 is used). As a result, the water supply temperature can be relaxed to rank A or B (higher during cooling and lower during heating). For example, if the water supply temperature during cooling operation mode is 16°C in the conventional example, it can be set to 18 to 20°C according to the first and second embodiments.
(b) According to the first embodiment, by using the curtain member 3 as the radiation member, the entire curtain member 3 is cooled by the cooling effect (radiation and convection) from the heat exchange mat 2, so that the radiation component can be rated as B rank, which is higher than the D rank of reference example 1 (without curtain member 3).
(c) According to the second embodiment, by using the curtain 6, heat rays from the surroundings are blocked, and the curtain 6 is cooled by the cooling effect of the heat exchange mat 2 and the curtain member 3, which makes it easier to lower the mean radiant temperature (MRT) of the sleeping space above the bed 110, and increases the radiation effect on the person P.
(d) According to the first and second embodiments, the supply water temperature can be relaxed, so that the condensation prevention can be increased to rank B, and when the air conditioner 8 is ON, the condensation prevention can be increased to rank A. Condensation occurs when the surface temperature of the heat exchange mat 2 is lower than the indoor dew point temperature. Therefore, the higher the surface temperature (supply water temperature) of the heat exchange mat 2 is, the less frequently it becomes lower than the indoor dew point temperature, and the less likely condensation occurs.

The above describes an embodiment of the present invention, but the present invention is not limited to the above embodiment, and various modifications and implementations are possible, as described below.

[Modification 1]
Fig. 11A is a cross-sectional view of line E-E in Fig. 12 showing an example of the installation state of a radiant air-conditioning device constituting a radiant air-conditioning system according to Modification 1, and Fig. 11B is an enlarged view of part D in Fig. 11A. Fig. 12 is a plan view of the radiant air-conditioning device shown in Fig. 11A. In the second embodiment, the heat exchange mat 2 and the curtain member 3 are attached to the wall 102, and the curtain 6 is attached to the frame 5, but in this Modification 1, the heat exchange mat 2, the curtain member 3, and the curtain 6 are unitized.

The first modified example has a unit 14A in which the heat exchange mat 2, the curtain member 3, and the curtain 6 are unitized. The unit 14A includes a metal frame 140A with a T-shaped cross section that is provided to surround the heat exchange mat 2 and the curtain member 3, two mounting members 141 for mounting the frame 140A to the ceiling surface 101a, and a mounting portion 4C similar to that of the second embodiment for mounting the heat exchange mat 2 and the curtain member 3 to the frame 140A. The curtain 6 is attached to the lower side of the frame 140A. The unit 14A is an example of a radiation unit. The frame 140A is an example of a frame body formed in a rectangular shape so as to surround the inner area in a plan view. The frame 140A has a pair of surfaces 140c that face each other with a predetermined gap. The heat exchange mat 2 and the curtain member 3 are attached to the pair of surfaces 140c of the frame 140A so as to be arranged in the inner area of the frame 140A.

As shown in FIG. 12, the frame 140A includes an outer plate 140a configured to have a quadrangle with four curved corners in a plan view, and an inner plate 140b joined to the inside of the outer plate 140a by welding or the like. The frame 140A and the mounting member 141 are fixed to each other by fastening parts such as bolts and nuts. The mounting member 141 has an opening for fixing the unit 14A to the ceiling surface 101a by screws or the like. The frame 140A may be formed from a metal such as aluminum, a resin such as polycarbonate, wood, or the like. The heat exchange mat 2 and the curtain member 3 may be unitized, and the curtain 6 may be attached later as necessary. The frame 140A, the mounting member 141, and the mounting portion 4C are an example of a placement portion for placing the heat exchange mat 2 and the curtain member 3 indoors.

As in the second embodiment, the mounting section 4C includes three pipes 430, commercially available pipe fasteners 431 that fasten both ends of each pipe 430 to the inner surface of the outer plate 140a of the frame 140A, and a number of cable ties 432 such as tie wraps or strings that fasten the folded-back main pipe 21 of the heat exchange mat 2 to the pipes 430.

The curtain 6 is, for example, a horizontally pulling curtain, and includes a curtain rail 60 attached to the underside of the inner plate 140b of the frame 140A, and a curtain fabric 61 that is hung from the curtain rail 60 by a hanging device 62 so that it can be opened and closed. The hanging device 62 includes a roller that moves along the curtain rail 60, and a fixing part that fixes the curtain fabric 61.

In this modified example 1, the heat exchange mat 2, the curtain member 3, and the curtain 6 are unitized, and the unit 14A, which is formed by attaching the heat exchange mat 2, the curtain member 3, and the curtain rail 60 to the frame 140A, can be easily attached to the ceiling surface 101a by the attachment member 141. In addition, since the space that the heat exchange mat 2 and the curtain member 3 target is a narrow space (sleeping space) above the bed 110 surrounded by the curtain 6, energy saving can be realized. In addition, by attaching the curtain member 3 to the frame 140A while applying tension not only in the longitudinal direction X but also in the lateral direction Y, a taut design can be presented when looking up from the bed 110. Note that when applying tension to the lateral direction Y of the curtain member 3 and attaching it to the frame 140A, a space may be provided between the end of the curtain member 3 in the lateral direction Y and the frame 140A.

[Modification 2]
FIG. 13 is a front view showing an example of the installation state of the radiant air-conditioning device constituting the radiant air-conditioning system according to the modified example 2. In addition, in the figure, the bed 110 and the person P shown in FIG. 1A are omitted. In this embodiment, the curtain member 3 is attached to the wall 102 by the second mounting part 4B so that the curtain member 3 contacts the second heat exchange mat 2B of the lower layer. According to the modified example 2, heat can be transferred from the heat exchange mat 2 to the curtain member 3 not only by radiation and convection but also by conduction, and compared to the first embodiment, the total capacity (total cooling capacity or total heating capacity) is lower, but the ratio of the radiation component to the total capacity can be increased.

[Modification 3]
FIG. 14 is a plan view of the main part showing the modified example 3. In FIG. 14, the holding member 24 is omitted. In the first embodiment, the heat exchange mat 2 is fixed to the wall 102 by applying tension to the heat exchange mat 2 by the first mounting portion 4A, but in the modified example 3, the heat exchange mat 2 is supported from the lower side by the net 7 so that tension is not applied to the heat exchange mat 2. The net 7 is an example of a receiving member. The first heat exchange mat 2A and the second heat exchange mat 2B may be overlapped and placed on the net 7, or two nets 7 may be used, the first heat exchange mat 2A may be placed on one net 7, and the second heat exchange mat 2B may be placed on the other net 7.

The net 7 has a larger opening rate than the heat exchange mat 2 (e.g., 80% or more), is formed from metal or resin, and both ends in the longitudinal direction X are attached to the wall 102 by the first mounting portion 4A. The first mounting portion 4A for mounting the net 7 includes a wall mounting member 43 that is attached to the wall 102 by screws or the like, and a mounting member 44 for mounting the net 7. By mounting the net 7 to the wall mounting member 43 by the mounting member 44, the net 7 takes a shape that follows the catenary line, and the heat exchange mat 2 placed on the net 7 also takes a shape that follows the catenary line.

In this modification 3, the heat exchange mat 2 is not subjected to tension, so damage to the heat exchange mat 2 due to excessive tension can be prevented.

[Modification 4]
Fig. 15 is a cross-sectional view of the curtain member 3 according to the fourth modification taken along the line B-B shown in Fig. 1A. As shown in Fig. 15, the curtain member 3 may have a periodically and continuously curved corrugated shape. The pitch between the peaks of the corrugation is, for example, 10 to 100 mm, and the length between the peaks and the valleys is, for example, 10 to 100 mm.

16 is a perspective view showing an example of a second mounting portion 4B for mounting the curtain member 3 according to the fourth modified example. The end of the curtain member 3 on the other side Xb in the longitudinal direction X may be mounted to the wall 102 by the second mounting portion 4B as shown in FIG. 16. That is, by applying tension to the curtain member 3 along the longitudinal direction X using a corrugated pipe 420, the curtain member 3 becomes corrugated following the corrugation of the pipe 420. The second mounting portion 4B for mounting the end of the curtain member 3 on one side Xa in the longitudinal direction X to the wall 102 is also configured in the same manner as in FIG. 16. The curtain member 3 may be formed into a mountain shape with periodic and continuous bends. For example, the curtain member 3 may be sewn into a bellows shape like a window curtain.

With this fourth variant, the surface area of the curtain member 3 is increased, making it possible to further increase the total capacity (total cooling capacity or total heating capacity).

[Modification 5]
In the fifth modification, the curtain member 3 is doubled. According to the fifth modification, the heat exchange function of the curtain member 3 can be improved more than that of the first and second embodiments. The number of overlapping curtain members 3 is not limited to two, and may be three or more.

[Modification 6]
FIG. 17 is a front view of a radiant air-conditioning system according to the sixth modified example, FIG. 18A is a plan view of the radiant air-conditioning device shown in FIG. 17, and FIG. 18B is an enlarged view of part F in FIG. 18A. In the second embodiment, both ends of the first heat exchange mat 2A, the second heat exchange mat 2B, and the curtain member 3 in the longitudinal direction X are attached to the wall 102 by the attachment parts 4C, but in the sixth modified example, the first heat exchange mat 2A, the second heat exchange mat 2B, and the curtain member 3 are attached to the frame 5 by the attachment parts 4C. The frame 5 and the attachment parts 4C are an example of an arrangement part for arranging the heat exchange mat 2 and the curtain member 3 indoors. The frame 5 to which the heat exchange mat 2 and the curtain member 3 are attached is an example of a radiation unit.

As in the second embodiment, the frame 5 includes an upper frame 50 and four column frames 51 that support the four corners of the upper frame 50 from the floor surface 103a. The upper frame 50 is formed in a rectangular shape in a plan view. As in the second embodiment, a curtain 6 is attached to the underside of the upper frame 50. The curtain 6 includes a curtain rail 60 and a curtain fabric 61. Note that the curtain 6 is not essential and may be provided as necessary. The upper frame 50 is an example of a frame formed in a rectangular shape so as to surround an inner area in a plan view. The upper frame 50 has a pair of surfaces 50a that face each other with a predetermined gap between them. The upper frame 50 may be formed from a metal such as aluminum, a resin such as polycarbonate, wood, etc. The heat exchange mat 2 and the curtain member 3 are attached to the pair of surfaces 50a of the upper frame 50 so as to be positioned in the inner area of the upper frame 50. The upper frame 50, the first heat exchange mat 2A, the second heat exchange mat 2B, the curtain member 3, and the mounting portion 4C may be unitized, and this unit may be supported by four column frames 51 as an example of a radiation unit.

As shown in Figs. 18A and 18B, the mounting portion 4C of the sixth modification attaches both ends in the longitudinal direction X of the first heat exchange mat 2A, the second heat exchange mat 2B, and the curtain member 3 to the inner surfaces 50a of the upper frame 50 that face each other in the longitudinal direction X. As shown in Fig. 10, the mounting portion 4C includes three pipes 430, six pipe fasteners 431, and four cable ties 432.

In this modification 6, even if the wall 102 is not structured to be able to mount the pipe fixing device 431 or the like, the frame 5 can be arranged to surround the bed 110, and the first heat exchange mat 2A, the second heat exchange mat 2B, and the curtain member 3 can be attached to the frame 5, so that the radiant air-conditioning device 1 can be easily installed on the existing bed 110. In addition, a comfortable air-conditioned space can be provided, so that the person can sleep comfortably on the bed 110. In addition, by attaching the curtain member 3 to the upper frame 50 while applying tension not only in the longitudinal direction X but also in the lateral direction Y, a taut design can be presented when looking up from the bed 110. When applying tension to the curtain member 3 in the lateral direction Y and attaching it to the upper frame 50, a space may be provided between the end of the curtain member 3 in the lateral direction Y and the upper frame 50.

[Modification 7]
Fig. 19A is a perspective view showing a radiant air-conditioning device according to Modification 7 as viewed obliquely from above, Fig. 19B is a perspective view showing a radiant air-conditioning device according to Modification 7 as viewed obliquely from below, and Fig. 19C is a perspective view showing a radiant air-conditioning device with a roll-up curtain lowered in Fig. 19A. Fig. 20 is a plan view of unit 14B of the radiant air-conditioning device 1 shown in Fig. 19A, and Fig. 21A is a cross-sectional view of line G-G in Fig. 20. Fig. 21B is an enlarged view of part H in Fig. 21A.

As shown in Figures 19A, 19B, and 19C, this radiant air conditioning device 1 is a stand type in which a unit 14B, which is a unit formed by the first heat exchange mat 2A, the second heat exchange mat 2B, the curtain member 3, and the frame 140B, is supported by a stand section 200 with an overhang structure (cantilever structure) so that the first heat exchange mat 2A, the second heat exchange mat 2B, and the curtain member 3 are positioned directly above the bed 210. The stand section 200 is an example of a placement section.

The bed 210 has casters 211 on the floor surface 103a side so that it can be moved across the floor surface 103a, but the casters 211 do not have to be provided. In addition, variant example 7 describes a case where the stand-type radiant air-conditioning device 1 is installed in a private room, a room for multiple people, a room for artificial dialysis, etc. in a hospital, but this is not limited to this and it may be installed in a bedroom, etc.

The stand 200 supports the unit 14B from the floor surface 103a, has an overall L-shape when viewed from the side, and includes a base 201 placed on the floor surface 103a, and a column 202 connected almost perpendicularly to the base 201. As shown in FIG. 21A, the base end of the frame 140B is fixed to the top of the column 202 by a fastening member such as a bolt.

The stand section 200 is formed primarily from a metal such as aluminum. The distance from the floor surface 103a to the curtain member 3 of the stand section 200 is, for example, 1700 to 2000 mm. The base section 201 has a width (for example, 500 to 700 mm) that allows it to fit under the bed 210. The base section 201 may be fixed to the floor surface 103a with a fixing means such as an anchor bolt.

As shown in FIG. 20, the unit 14B is formed in a rectangular shape so as to surround the inner area in a plan view, and includes a frame 140B having a pair of surfaces 140c facing each other with a predetermined gap therebetween, and an attachment portion 4C similar to that of the second embodiment for attaching both ends in the longitudinal direction X of the first heat exchange mat 2A, the second heat exchange mat 2B, and the curtain member 3 to the pair of surfaces 140c of the frame 140B. The heat exchange mat 2 and the curtain member 3 are attached to the pair of surfaces 140c of the frame 140B so as to be positioned in the inner area of the frame 140B. The frame 140B may be formed from a metal such as aluminum, a resin such as polycarbonate, wood, or the like. The unit 14B is an example of a radiation unit. The frame 140B is an example of a frame body.

The frame 140B does not necessarily have to be parallel to the floor surface 103a; for example, the tip may be raised in advance so that it is parallel to the floor surface 103a when the first heat exchange mat 2A, the second heat exchange mat 2B and the curtain member 3 are attached to the frame 140B. The tip of the frame 140B may be supported from the ceiling by a wire or the like, or from the floor surface 103a by a support rod. This makes it possible to prevent the heat exchange mat 2 and the like from coming off or falling off the frame 140B even when a large external force is applied due to an earthquake or the like, and allows the frame 140B to be made thinner and lighter.

The roll-up curtain 16 is attached to each of the three periphery sides of the frame 140B, excluding the periphery on the pillar section 202 side. The roll-up curtain 16 is configured, for example, by connecting the curtain 161 to a winding shaft so that it can be rolled up and pulled out. The fabric material of the curtain 161 may be, for example, chemical fibers such as polyester and acrylic, natural materials such as silk, cotton, and linen, or it may be a lace material.

In this modification 7, the radiant air conditioning device 1 is freestanding, so it can be easily installed on an existing bed 210. In addition, a comfortable air-conditioned space can be provided, so that a person can sleep comfortably on the bed 210. In addition, since the space that the heat exchange mat 2 and the curtain member 3 target is a narrow space (sleeping space) above the bed 210 surrounded by the curtain 161, energy saving can be achieved. In addition, by applying tension to the curtain member 3 not only in the longitudinal direction X but also in the lateral direction Y and attaching it to the frame 140B, a taut design can be presented when looking up from the bed 210. Note that when applying tension to the lateral direction Y of the curtain member 3 and attaching it to the frame 140B, a space may be provided between the end of the curtain member 3 in the lateral direction Y and the frame 140B.

Reference Signs List 1...Radiant air conditioning device, 2A...First heat exchange mat, 2B...Second heat exchange mat, 3...Curtain member, 3a...Radiating surface, 3b...End portion, 4A...First mounting portion, 4B...Second mounting portion, 4C...Mounting portion, 5...Frame, 6...Curtain, 7...Net, 8...Air conditioner, 9...Control device, 10...Radiant air conditioning system, 11...Heat source unit, 12...Supply line, 13...Return line, 14A, 14B...Unit, 16...Roller curtain , 20...supply side main pipe, 20a...supply port, 21...turn back side main pipe, 22...return side main pipe, 22a...exhaust port, 23...heat exchange pipe, 24...holding member, 40...wall mounting member, 40a...screw, 40b...opening, 41...mat mounting member, 42...curtain mounting member, 43...wall mounting member, 44...mounting member, 50...upper frame, 50a...surface, 51...pillar frame, 60...curtain rail, 61...curtain fabric Ground, 62...hanging device, 90...control unit, 91...dew point temperature sensor, 92...operation unit, 100...room, 101...ceiling, 101a...ceiling surface, 102...wall, 103...floor, 103a...floor surface, 110...bed, 140A, 140B...frame, 140a...outer plate, 140b...inner plate, 140c...surface, 141...mounting member, 161...curtain, 200...stand, 201...base portion, 202...pillar portion, 210...bed, 211 ...caster, 410, 420...pipe, 411...cable tie, 412, 422...wire, 413, 423...fixing part, 414, 424...adjustment part, 430...pipe, 431...pipe fixture, 432...cable tie, a, b...radiant heat, c...convection, d...air flow, X...longitudinal direction, Xa...one side in the longitudinal direction, Xb...other side in the longitudinal direction, Y...short-side direction, Ya...one side in the short-side direction, Yb...other side in the short-side direction, P...person

Claims (11)

1. a tubular member that is disposed in an area narrower than the ceiling surface by providing a first space between the tubular member and a ceiling surface of an indoor space, the tubular member having a plurality of flow passages through which a heat medium flows substantially parallel to the ceiling surface;
   a cloth radiation member that is disposed in an area narrower than the ceiling surface so as to be exposed as a radiation surface on the opposite side of the ceiling surface of the tubular member by providing a second space between the cloth radiation member and the tubular member, and that directly exchanges heat with the tubular member;
   A radiant air conditioning system equipped with
2. The plurality of flow passage portions of the tubular member extend in a longitudinal direction, and the tubular member is disposed under tension along the longitudinal direction;
   The radiation member is arranged with tension applied at least in the longitudinal direction.
   The radiant air conditioning device according to claim 1.
3. The radiant air conditioning device according to claim 2, wherein the fabric constituting the radiating member has an emissivity of 70% or more.
4. The radiant air conditioning device according to claim 3, wherein the fabric has a thermal conductivity of 0.3 W/(m·k) or more.
5. The radiant air conditioning device of claim 4, wherein the fabric is made of silk.
6. a second tubular member having the plurality of flow path portions extending in the longitudinal direction and disposed in a region narrower than the ceiling surface on the opposite side of the ceiling surface of the second tubular member;
   the tubular member and the other tubular member are arranged such that the flow path portions are spaced apart from each other in a short direction perpendicular to the longitudinal direction, and the flow path portions of the other tubular member are arranged between the flow path portions of the tubular member in a plan view,
   The radiation member is disposed with a second space provided between the radiation member and the other tubular member.
   The radiant air conditioning device according to claim 2.
7. A frame body formed in a rectangular shape so as to surround an inner region in a plan view;
   a tubular member having a plurality of flow passage portions through which the heat medium flows and attached to the frame so as to be disposed in the inner region of the frame;
   a cloth radiation member that is attached to the frame and disposed in the inner region of the frame so as to be exposed as a radiation surface on one side of the tubular member with a space provided between the cloth radiation member and the tubular member, and that directly exchanges heat with the tubular member;
   A radiation unit equipped with
8. The frame has a pair of surfaces opposed to each other with a predetermined gap therebetween,
   The plurality of flow passage portions of the tubular member extend in a longitudinal direction, and the tubular member is attached to the pair of surfaces while being tensioned in the longitudinal direction;
   The radiation member is attached to the pair of surfaces while being applied with tension in at least the longitudinal direction.
   A radiating unit according to claim 7.
9. A radiating unit according to claim 8 ;
   an arrangement section that arranges the radiation unit indoors so that the tubular member is located in an area narrower than a ceiling surface of the room by providing a space between the tubular member and the ceiling surface;
   A radiant air conditioning system equipped with
10. A radiant air conditioning device that performs heat exchange by radiation and convection to heat and cool the room,
    A radiant air-conditioning device comprising a cloth radiating member having a first surface that receives radiant heat, and a second surface that is provided opposite the first surface and receives the radiant heat and radiates radiant heat.
11. A plurality of radiant air-conditioning devices according to claims 1, 2, 3, 4, 5, 6, 9 or 10;
    A heat source machine that circulates the heat medium whose temperature and flow rate are controlled through the tubular members of the plurality of radiant air-conditioning devices;
    A radiant air conditioning system equipped with
    
    

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