Radiation air conditioning system

Abstract

To provide a radiation air conditioning system that improves comfort in an area to be air-conditioned.SOLUTION: A radiation air conditioning system 100 comprises a plurality of nozzles 70 comprising discharge ports 22, an air blower 15 for blowing air into the plurality of nozzles 70, and a radiant heat generation part 31. The plurality of nozzles 70 includes a first nozzle 71, an intermediate nozzle 73, and a second nozzle 72. The radiant heat generation part 31 includes a water supply pipe 33, a plurality of pipes 80, and a drain pipe 34. The plurality of pipes 80 includes a first pipe 81, an intermediate pipe 87, and a second pipe 84. A first inflow port 90 of the first pipe 81 is provided upstream of a second inflow port 92 of the second pipe 84 in a flow of a heat medium. The heat medium having flowed into the second pipe 84 through the second inflow port 92 flows into the intermediate pipe 87 through an intermediate inflow port 94 of the intermediate pipe 87 after flowing out of the second pipe 84.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] The present disclosure relates to a radiant air conditioning system using radiant heat.

Background Art

[0002] Conventionally, a radiant air conditioning system using a radiant panel that embeds a large number of pipes through which a heat medium such as chilled water flows in a panel and air-conditions a room or the like by heat radiation has been known. (For example, Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In such a conventional radiant air conditioning system, since almost no convective heat transfer occurs due to the air circulating in the space, it is difficult to cool the space by utilizing an object that generates cooling heat, and it has been difficult to improve comfort.

[0005] Further, when air-conditioning is performed by a radiant air conditioning system to air-condition a part of an indoor space (the air-conditioned area), temperature unevenness occurs in the air-conditioned area due to the heat load from other non-air-conditioned areas in the same space, and there has been a problem that the comfort of the air-conditioned area cannot be maintained.

[0006] Therefore, an object of the present invention is to solve the above-described conventional problems and provide a radiant air conditioning system capable of improving the comfort of an air-conditioned area.

Means for Solving the Problems

[0007] And, in order to achieve this object, a radiant air conditioning system according to one aspect of the present invention is a radiant air conditioning system including a plurality of nozzles having air outlets, a blower for blowing air into the plurality of nozzles, and a radiant heat generating unit, wherein the plurality of nozzles include a first nozzle, an intermediate nozzle, and a second nozzle, the intermediate nozzle is provided with a gap between the first nozzle and the second nozzle, the gap allows induced air attracted by the blown air blown out from the air outlet to pass through, the radiant heat generating unit includes a water supply pipe, a plurality of pipes, and a drain pipe, the plurality of pipes generate heat radiation to the air-conditioned area by passing a heat medium therethrough, the heat medium flows through the water supply pipe, the plurality of pipes, and the drain pipe in this order, the plurality of pipes include a first pipe, an intermediate pipe, and a second pipe, the first pipe passes through the first nozzle, the intermediate pipe passes through the intermediate nozzle, the second pipe passes through the second nozzle, a first inlet of the first pipe is provided upstream of the second inlet of the second pipe in the flow of the heat medium, and the heat medium flowing into the second pipe through the second inlet flows into the intermediate pipe through an intermediate inlet of the intermediate pipe after flowing out of the second pipe, thereby achieving the intended object.

Advantages of the Invention

[0008] According to the present invention, the comfort of the air-conditioned area can be improved.

Brief Description of the Drawings

[0009]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Figure 12

Figure 13

Figure 14

Figure 15

Embodiments for Carrying Out the Invention

[0010] Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the following embodiments are an example of embodying the present invention and do not limit the technical scope of the present invention. Also, each drawing described in the embodiments is a schematic diagram, and the ratio of the size and thickness of each component in each drawing does not necessarily reflect the actual dimensional ratio.

[0011] (Example 1) First, with reference to FIGS. 1, 2, and 3, the configuration of the radiant air conditioning system 100 according to Example 1 will be described.

[0012] FIG. 1 is a perspective view showing the basic configuration of the radiant air conditioning system 100 according to this example.

[0013] Figure 2 is a side view showing the overall layout of the radiant air conditioning system 100.

[0014] Figure 3 is a schematic connection diagram showing the connection of the pipe 80 of the radiant heat generation part in the radiant air conditioning system.

[0015] In addition, in FIGS. 1, 2, and 3, only the main devices and typical configurations constituting the system are shown. For the detailed configurations of each device, reference will be made to the subsequent figures after FIG. 3 and described below.

[0016] The radiant air conditioning system 100 is a system that plays a role in enhancing the thermal environment of the living space (indoor space 1), that is, improving the thermal comfort of the living space, through a combination of air flow, heat exchange, and thermal radiation.

[0017] Specifically, as shown in FIG. 1, the radiant air conditioning system 100 is configured to include a blower device 11 and a radiant heat generation part 31.

[0018] The blower device 11 is configured to include a plurality of nozzles 70, a blower box 14, blowers 15a, 15b, 15c collectively referred to as a blower 15, and 22a, 22b, 22c (see FIG. 4) collectively referred to as an air outlet 22.

[0019] The plurality of nozzles 70 of the radiant air conditioning system 100 include a first nozzle 71, a second nozzle 72, and an intermediate nozzle 73.

[0020] The plurality of nozzles 70 of the radiant air conditioning system 100 are installed in the indoor space 1 which is a part of the house. Here, the indoor space 1 refers to a space used by residents as a place to live inside, including living rooms, dining rooms, bedrooms, private rooms, or children's rooms, etc. Note that spaces where residents do not move inside, such as closets, cupboards, or mechanical rooms, are not included.

[0021] The indoor space 1 constitutes an enclosed space formed by wall surfaces including a ceiling surface, a floor surface, and side wall surfaces. However, in FIG. 1, to facilitate viewing the arrangement of the radiant air-conditioning system 100 installed inside the indoor space 1, the side wall surface and the ceiling surface on the front side of the drawing are shown as being transparent.

[0022] And the radiant air-conditioning system 100 air-conditions the conditioned area 3.

[0023] The conditioned area 3 refers to the area within the indoor space 1 that is covered by the first nozzle 71, the second nozzle 72, and the intermediate nozzle 73 of the blower 11. That is, the first nozzle 71 and the second nozzle 72 will be located near the boundary surface 3a between the conditioned area 3 and the indoor space 1.

[0024] The radiant heat generation unit 31 includes a pipe 80, a water supply pipe 33, a drain pipe 34, a chilled water generator 35, a water pump 36, an outdoor unit 42, and a heat medium circuit 43.

[0025] The chilled water generator 35 is a device for generating a heat medium (such as water) for air-conditioning and heat radiation in the indoor space 1, and includes a heat medium coil 35a which is a mechanism for heating and cooling the heat medium inside, a tank for storing the heat medium for heating and cooling, and a mechanism for controlling the temperature of the heat medium.

[0026] Here, the heat medium (heat transfer medium) is a general term for fluids used to transfer heat between an external heat source and a device in order to heat or cool the device and control it to a target temperature. The heat medium includes refrigerant, cold water, hot water, etc.

[0027] Furthermore, the heat medium coil 35a is connected to the outdoor unit 42 via a heat medium circuit 43 through which the heat medium flows. The chilled water generator 35 is connected to the water supply pipe 33 and the drain pipe 34, and is configured such that the heat medium passing through the inside comes into contact with the heat medium coil 35a. That is, by changing the temperature of the heat medium coil 35a, the temperature of the heat medium can be adjusted.

[0028] The water supply pipe 33 is a pipe for sending the heat medium whose temperature has been adjusted by the cooling water generation chiller 35 to the pipe 80.

[0029] The drain pipe 34 is a pipe for returning the heat medium that has circulated through the pipe 80 back to the cooling water generation chiller 35.

[0030] The water supply pump 36 is a pump that generates the flow of the heat medium for heating and cooling to be sent to the pipe 80. In this embodiment, the water supply pipe 33, the drain pipe 34, the cooling water generation chiller 35, and the water supply pump 36 are arranged outside the indoor space 1. However, they may be arranged inside the indoor space 1 beyond the ceiling surface, floor surface, and side wall surfaces that constitute it, and arranging them at any position that does not interfere with the living space will not affect the operation and effects of the present invention.

[0031] The outdoor unit 42 is an outdoor unit installed in the outdoor space, and has a heat pump 44 composed of a compressor 42a, an expander 42b, an outdoor heat exchanger 42c, a blower fan 42d, and a four-way valve 42e. Since a general configuration is used for the outdoor unit 42, detailed descriptions of each device (compressor 4 2a, expander 42b, outdoor heat exchanger 42c, blower fan 42d, four-way valve 42e) are omitted.

[0032] The heat pump 44 is connected to the heat medium coil 35a via the heat medium circuit 43, and the outdoor unit 42 adjusts the temperature of the heat medium flowing through the heat medium coil 35a by controlling the heat pump 44.

[0033] The heat medium coil 35a functions as an absorber or a radiator in a refrigeration cycle including a compressor, a radiator, an expander, and an absorber, and is configured to absorb heat (cool) or radiate heat (heat) when the heat medium introduced from the outdoor unit 42 flows through the inside.

[0034] In the refrigeration cycle including the heat medium coil 35a, since the four-way valve 42e is connected, in the chilled and heated water production chiller 35, the four-way valve 42e can switch between a cooling mode state in which the heat medium flows in the first direction to cool the heat medium and a heating mode state in which the heat medium flows in the second direction to heat the heat medium.

[0035] Here, the first direction is the direction in which the heat medium flows through the compressor 42a, the outdoor heat exchanger 42c, the expander 42b, and the heat medium coil 35a in this order.

[0036] Also, the second direction is the direction in which the heat medium flows through the compressor 42a, the heat medium coil 35a, the expander 42b, and the outdoor heat exchanger 42c in this order. In the heat medium coil 35a, it is possible to cool or heat the introduced heat medium.

[0037] The pipe 80 is a hollow member (pipe) for changing the temperature of the air occupying the interior of the indoor space 1 or generating heat radiation between the wall surfaces constituting the indoor space 1 and the objects (such as furniture or human bodies) existing inside, and the heat medium can pass through its interior.

[0038] The pipe 80 is composed of a plurality of branched pipes and is provided inside the blower device 11. The pipe 80 is composed of a first pipe 81 provided inside the first nozzle 71 to be described later, a second pipe 84 provided inside the second nozzle 72 to be described later, and an intermediate pipe 87 provided inside the intermediate nozzle 73 to be described later.

[0039] In particular, it is preferable to use a material with a high emissivity such as resin for the surface of the pipe 80, but it is also possible to substitute with other materials.

[0040] Using FIG. 3, the configuration inside the first pipe 81, the second pipe 84, and the intermediate pipe 87 and the outline of the heat medium flow will be described.

[0041] The first pipe 81 is the pipe 80 provided inside the first nozzle 71.

[0042] The first pipe 81 is composed of a first inlet 90, a first forward pipe 82, a first return pipe 83, and a first outlet 91 from the upstream side.

[0043] The heat medium supplied from the water supply pipe 33 and flowing through the first pipe 81 is configured to be drained into the drain pipe 34.

[0044] The first inlet 90 is an opening for taking in the heat medium from the water supply pipe 33 into the first pipe 81.

[0045] The first forward pipe 82 is connected to the first inlet 90 on the upstream side and to the first return pipe 83 on the downstream side. The first forward pipe 82 is provided on the inner side surface of the first nozzle 71, extends from one side to the opposite side of the first nozzle 71, and is installed so as to turn back on the opposite side.

[0046] The first return pipe 83 is connected to the first forward pipe 82 on the upstream side and to the first outlet 91 on the downstream side. The first return pipe 83 is provided on the opposite side of the co - installed surface of the first forward pipe 82 among the inner side surfaces inside the first nozzle 71, extends from one side to the opposite side of the first nozzle 71, and is installed so as to turn back on the opposite side.

[0047] The first outlet 91 is an opening for discharging the heat medium flowing through the first pipe 81 into the drain pipe 34.

[0048] With such a configuration, when the heat medium flows through the first pipe 81, when the heat medium flows in from the first inlet 90, it flows in the order of the first forward pipe 82 and the first return pipe 83, and is discharged from the first outlet 91 into the drain pipe 34.

[0049] The second pipe 84 is a pipe 80 provided inside the second nozzle 72.

[0050] The second pipe 84 is composed of a second inlet 92, a second forward pipe 85, a second return pipe 86, and a second outlet 93 from the upstream side.

[0051] The heat medium supplied from the water supply pipe 33 and flowing through the second pipe 84 does not drain into the drain pipe 34 but flows into the intermediate pipe 87. Details will be described below.

[0052] The second inlet 92 is an opening provided on the water supply pipe 33 for taking the heat medium into the second pipe 84.

[0053] The second forward pipe 85 is connected to the second inlet 92 on the upstream side and to the second return pipe 86 on the downstream side. The second forward pipe 85 is provided on the inner side surface of the second nozzle 72, extends from one side to the opposite side of the second nozzle 72, and is installed so as to turn back on the opposite side.

[0054] The second return pipe 86 is connected to the second forward pipe 85 on the upstream side and to the second outlet 93 on the downstream side. The second forward pipe 85 is provided on the side opposite to the co-located surface of the second forward pipe 85 among the inner side surfaces inside the second nozzle 72, extends from one side to the opposite side of the second nozzle 72, and is installed so as to turn back on the opposite side.

[0055] The second outlet 93 is an opening of the second pipe 84 for sending the heat medium flowing in the second pipe 84 to the intermediate pipe 87.

[0056] With such a configuration, when the heat medium flows through the second pipe 84, when the heat medium flows in from the second inlet 92, it flows in the order of the second forward pipe 85 and the second return pipe 86, and flows out from the second outlet 93 to the intermediate pipe 87.

[0057] The intermediate pipe 87 is a pipe 80 provided inside the intermediate nozzle 73. The intermediate pipe 87 is composed of an intermediate inlet 94, an intermediate forward pipe 88, an intermediate return pipe 89, and an intermediate outlet 95 from the upstream side. The supply of the heat medium to the intermediate pipe 87 is carried out from the second pipe 84. Details will be described below.

[0058] The intermediate inlet 94 is an opening of the intermediate pipe 87 connected to the second outlet for taking the heat medium from the second pipe 84 into the intermediate pipe 87.

[0059] The intermediate forward pipe 88 is connected at its upstream side to the intermediate inlet 94 and at its downstream side to the intermediate return pipe 89. The intermediate forward pipe 88 is provided on the inner side surface of the intermediate nozzle 73, extends from one side to the opposite side of the intermediate nozzle 73, and is installed so as to fold back at the opposite side.

[0060] The intermediate return pipe 89 is connected at its upstream side to the intermediate forward pipe 88 and at its downstream side to the intermediate outlet 95. The intermediate return pipe 89 is provided on the inner side surface of the intermediate nozzle 73 on the side opposite to the co-location surface of the intermediate forward pipe 88, extends from one side to the opposite side of the intermediate nozzle 73, and is installed so as to fold back at the opposite side.

[0061] The intermediate outlet 95 is an opening for discharging the heat medium flowing in the intermediate pipe 87 to the drain pipe 34.

[0062] With such a configuration, in the intermediate pipe 87, the heat medium flowing in from the intermediate inlet 94 flows in the order of the intermediate forward pipe 88 and the intermediate return pipe 89, and flows out from the intermediate outlet 95 to the drain pipe 34.

[0063] Details of the structures in the first forward pipe 82, the first return pipe 83, the second forward pipe 85, the second return pipe 86, the intermediate forward pipe 88, and the intermediate return pipe 89 and the flow of the heat medium will be described later.

[0064] Next, with reference to FIGS. 4 and 5, the detailed configuration of the blower device 11 will be described.

[0065] FIG. 4 is an arrangement diagram showing an installation image of the blower device 11 in the radiation air conditioning system 100.

[0066] FIG. 5(a) is a perspective view showing the arrangement relationship between the first nozzle 71 and the first pipe 81 constituting the radiation air conditioning system 100.

[0067] FIG. 5(b) is a cross-sectional view showing the arrangement relationship between the first nozzle 71 and the first pipe 81 constituting the radiation air conditioning system 100.

[0068] In FIG. 5, the first nozzle 71 is referred to as an example, and the second nozzle 72 and the intermediate nozzle 73 are omitted because they have the same configuration.

[0069] The air blower 11 is a device that blows a uniform planar flow of gentle wind speed from the air blowing surface 24 (see FIG. 8) into the indoor space 1. In the present embodiment, as shown in FIG. 1, the air blower 11 is arranged near the ceiling surface of the indoor space 1 and blows a uniform planar flow of gentle wind speed from the ceiling surface of the indoor space 1 toward the floor surface.

[0070] The air blower 11 includes a first nozzle 71, a second nozzle 72, an intermediate nozzle 73, a blower box 14, and a blower 15.

[0071] The blower box 14 includes an air blowing chamber 18, a partition wall 19, and a suction port 21.

[0072] The blower box 14 is a frame for integrating and incorporating the devices and air ducts necessary for supplying the circulating air in the indoor space 1 to the first nozzle 71, the second nozzle 72, and the intermediate nozzle 73 and blowing air. Further, the blower box 14 is arranged so as to be incorporated in the lowered ceiling portion of the room in the indoor space 1. Note that the blower box 14 does not necessarily have to be incorporated in the lowered ceiling portion of the indoor space 1, and for example, it may be suspended from the ceiling surface or fixed to the side wall surface and arranged so as to be exposed in the indoor space 1. It is not necessary to be incorporated in the lowered ceiling portion of the indoor space 1, and for example, it may be suspended from the ceiling surface or fixed to the side wall surface and arranged so as to be exposed in the indoor space 1.

[0073] The partition wall 19 is provided so as to divide the inside of the blower box 14 into two spaces, a space including the suction port 21 and the blower 15, and the air blowing chamber 18 which is a space connected to the first nozzle 71, the second nozzle 72, and the intermediate nozzle 73. Further, the partition wall 19 has an opening communicating with the blower outlet 23 of the blower 15 (the blowers 15a, 15b, and 15c).

[0074] The air supply chamber 18 is a space for temporarily accumulating the circulating air blown by the air blowers 15a, 15b, and 15c, and has the role of equalizing the distribution of the air supplied from the air blowers 15a, 15b, and 15c and making the air flow rates to the first nozzle 71, the second nozzle 72, and the intermediate nozzle 73 equal.

[0075] Also, in the air blower box 14, the air blowers 15a, 15b, and 15c and the air supply chamber 18 are separated by a partition wall 19 and communicate with each other via the air blower outlets 23a, 23b, and 23c.

[0076] The air supply chamber 18 communicates with the first nozzle 71, the second nozzle 72, and the intermediate nozzle 73 respectively on the side opposite to the surface connected to the air blowers 15a, 15b, and 15c, and forms continuous air ducts from the air blowers 15a, 15b, and 15c to the first nozzle 71, the second nozzle 72, and the intermediate nozzle 73 respectively.

[0077] The suction port 21 is a rectangular opening provided on the lower surface of the air blower box 14 so as to communicate the indoor space 1 and the air blower box 14. Note that the shape of the opening of the suction port 21 is not limited to a rectangle, and may be round or the like, and the number of openings may be one or more separately.

[0078] The air blowers 15a, 15b, and 15c generate a pressure difference between the indoor space 1 and the air blower box 14, take in the circulating air from the indoor space 1 through the suction port 21, and blow it into the air supply chamber 18. The air blowers 15a, 15b, and 15c each include an impeller and a motor (not shown), and blow air by driving the impeller with the motor.

[0079] Here, three air blowers 15a, 15b, and 15c are shown as the air blower 15, but this is merely an example, and the number of air blowers 15 may be one or more.

[0080] The first nozzle 71, the second nozzle 72, and the intermediate nozzle 73 are members in a substantially rectangular parallelepiped shape having air outlets 22 (air outlets 22a, 22b, 22c), and serve to blow the air blown from the blowers 15a, 15b, and 15c into the indoor space 1.

[0081] In the present embodiment, since the first nozzle 71, the second nozzle 72, and the intermediate nozzle 73 have the same components, the first nozzle 71 will be described as an example here.

[0082] As shown in FIG. 1, one of the two surfaces with the smallest cross-sectional area among the six surfaces of the first nozzle 71, the second nozzle 72, and the intermediate nozzle 73 is in contact with the blower box 14.

[0083] The first nozzle 71, the second nozzle 72, and the intermediate nozzle 73 communicate with the blower box 14 through holes for air to pass through.

[0084] Further, as shown in FIG. 2, the other of the two surfaces with the smallest cross-sectional area among the six surfaces is disposed inside the downward ceiling portion penetrating the side wall surface of the indoor space 1 (the side wall surface opposite to the side wall surface in contact with the blower box 14).

[0085] Further, the four surfaces excluding the other two surfaces with the smallest cross-sectional area do not contact the blower box 14, the ceiling surface of the indoor space 1, and the adjacent first nozzle 71, second nozzle 72, and intermediate nozzle 73. For this reason, the air occupying the indoor space 1 is installed in a state where it can pass around the first nozzle 71, the second nozzle 72, and the intermediate nozzle 73. In the present embodiment, the space through which the air around the first nozzle 71, the second nozzle 72, and the intermediate nozzle 73 communicating with the indoor space 1 passes is defined as the induction space 2.

[0086] More specifically, as shown in FIG. 4, among the six surfaces of the first nozzle 71, the air outlet 22a is provided on the surface facing the floor surface direction.

[0087] The air outlet 22a is an air outlet for blowing the air supplied through the air supply chamber 18 and the first nozzle 71 into the indoor space 1.

[0088] The air outlet 22a is formed as an opening (for example, slit-shaped) along the direction in which the blowing nozzle extends from the blower box 14 (corresponding to the left-right direction in FIG. 4).

[0089] Also, as shown in FIG. 5(b), the air outlet 22a has a smaller width with respect to the surface on which the air outlet 22a is present, and the cavity portion inside the first nozzle 71 has a structure that gradually narrows so as to match the width of the air outlet 22a.

[0090] If the length of each nozzle in the left-right direction in FIG. 4 is defined as the blowing nozzle length, this length is sufficiently long with respect to the length of one side of the contact surface with the blower box 14. At this time, when the size of each nozzle such as the first nozzle 71 is such that the side length of the contact surface is 17 cm in the vertical direction and 4 cm in the horizontal direction, the blowing nozzle length is set to about 2 m.

[0091] Also, as shown in FIG. 2, the positional relationship among the first nozzle 71, the second nozzle 72, and the intermediate nozzle 73 is such that they are arranged in parallel with each other so that the air outlets 22a, 22b, and 22c are located on the same plane substantially parallel to the ceiling surface.

[0092] A predetermined interval (for example, 16 cm) is provided between the first nozzle 71, the second nozzle 72, and the intermediate nozzle 73, respectively.

[0093] By doing so, it is possible to generate an air flow in the blowing direction over a wide range while sufficiently securing the induction space 2 between each of the first nozzle 71, the second nozzle 72, and the intermediate nozzle 73.

[0094] In addition, each nozzle such as the first nozzle 71 is made of a material with good heat transfer such as aluminum. Air flowing through the hollow interior (the blown air Q0 described later) and air passing through the gap (the induced air Q1 described later) can easily exchange heat with each pipe such as the first pipe 81 via the side member.

[0095] As shown in FIG. 4, as an example, the air outlets 22a, 22b, and 22c are all located on the same plane substantially parallel to the ceiling surface. That is, it can be said that the blowing slits 22 (air outlets 22a, 22b, 22c) on the side of the first nozzle 71, the second nozzle 72, and the intermediate nozzle 73 are arranged side by side with a gap so as to be located on the same plane, forming the blowing surface 24 (see FIG. 8).

[0096] Note that if a sufficient induced space 2 can be secured, regarding the positional relationship of the first nozzle 71, the second nozzle 72, and the intermediate nozzle 73, the air outlets 22a, 22b, 22c do not have to be substantially parallel to the ceiling surface (for example: zigzag type, arch type, etc. that are alternately positioned).

[0097] Next, with reference to FIGS. 5 and 6, the detailed configuration of the radiant heat generation unit 31 will be described. Since the arrangement of the pipes 80 inside each of the first nozzle 71, the second nozzle 72, and the intermediate nozzle 73 is the same, only the first nozzle 71 is illustrated here as an example.

[0098] FIG. 6 is a schematic connection diagram showing the connection relationship of the pipes 80 and other related components in the radiant heat generation unit 31. Also, the heat medium circuit 43 and the outdoor unit 42 are not shown and are omitted.

[0099] The radiant heat generation unit 31 is a device that air-conditions the indoor space 1 by the radiant heat of a large number of pipes through which a heat medium such as chilled and heated water flows.

[0100] The radiant heat generation unit 31 plays a role in temperature-adjusting the blown air Q0 blown out from the blower 11.

[0101] The radiant heat generation unit 31 also plays a role of applying radiant heat to people and objects existing in the air-conditioned area 3 of the indoor space 1 via the first nozzle 71, the second nozzle 72, and the intermediate nozzle 73.

[0102] Specifically, as shown in FIGS. 1 and 3, the radiant heat generation unit 31 includes a pipe 80 (a first pipe 81, a second pipe 84, and an intermediate pipe 87), a water supply pipe 33, a drain pipe 34, a chilled water generation chiller 35, and a water supply pump 36. Note that only the first pipe 81 is illustrated in FIGS. 5 and 6.

[0103] The first pipe 81 constitutes a pipe group having a total of eight linear pipes (a first forward pipe 82a, 82b, 82c, 82d and a first return pipe 83a, 83b, 83c, 83d).

[0104] The first forward pipe 82 is provided along the inner side surface of the first nozzle 71.

[0105] The first return pipe 83 is provided along another inner side surface of the first nozzle 71.

[0106] The first pipe 81 has, for example, a plurality of pipes of the same number on both side surfaces with respect to the blowing direction of the first nozzle 71.

[0107] On one inner side surface of the first nozzle 71, each pipe of the first forward pipe 82 or the first return pipe 83 is arranged in parallel in a direction perpendicular to the blowing surface 24.

[0108] Regarding each pipe of the first forward pipe 82 or the first return pipe 83, the distance between adjacent pipes is arranged to be the same interval.

[0109] For example, the first forward pipes 82a, 82b, 82c, 82d in FIG. 5 exist on the same plane (one side surface 71a of the first nozzle 71) and are positioned at a certain distance in a direction perpendicular to the blowing surface 24. These distances are provided such that, for example, the distance between adjacent pipes is 10 mm.

[0110] Also, similarly to the first return pipe 83 in FIG. 5, the four exemplary first return pipes 83a, 83b, 83c, and 83d exist on the same plane (the other side surface 71b of the first nozzle 71), and are positioned at a certain distance in a direction perpendicular to the air supply surface 24.

[0111] As described above, the second pipe 84 and the intermediate pipe 87 provided in each of the second nozzle 72 and the intermediate nozzle 73 have the same configuration as the first pipe 81.

[0112] Here, regarding the configuration of these first pipes 81, an explanation will be given from the upstream side of the heat medium flowing through the first pipes 81.

[0113] First, the end of the first forward pipe 82b is connected to the water supply pipe 33 via the first inlet 90.

[0114] The first forward pipe 82b connected to the water supply pipe 33 penetrates through the blower box 14.

[0115] The first forward pipe 82b is connected to the inside of the first nozzle 71 from one end 71c that communicates with the blower box 14 among both ends of the first nozzle 71.

[0116] Then, the first forward pipe 82b branches in parallel with the first forward pipes 82c and 82d near one end 71c that communicates with the blower box 14.

[0117] The first forward pipes 82b, 82c, and 82d are provided at a certain interval in a direction perpendicular to the air supply surface 24 on one side surface 71a.

[0118] The first forward pipes 82b, 82c, and 82d extend from near one end 71c that communicates with the blower box 14 to near the other end 71d.

[0119] In the vicinity of the other end 71d of the first nozzle 71, the first forward pipes 82b, 82c, 82d are connected and are connected to the end of the first forward pipe 82a.

[0120] The first forward pipe 82a extends from the vicinity of the other end 71d of the first nozzle 71 to the vicinity of one end 71c.

[0121] The first forward pipe 82a is arranged on one side surface 71a at a position farther from the air outlet 22a than the first forward pipes 82b, 82c, 82d.

[0122] The first forward pipe 82a is arranged so as to provide a constant interval in a direction perpendicular to the first forward pipes 82b, 82c, 82d and the air blowing surface 24.

[0123] A heat medium such as water flows in from one end 71c that blows air into the first nozzle 71 through the first forward pipe 82b among both ends of the first nozzle 71.

[0124] Then, the heat medium branches and flows in parallel to the first forward pipes 82b, 82c, 82d inside the first nozzle 71.

[0125] Then, the heat medium merges in the vicinity of the other end 71d of the first nozzle 71 and flows into the first forward pipe 82a.

[0126] The heat medium flowing through the first forward pipe 82a flows out from one end 71c of the first nozzle 71.

[0127] The first forward pipe 82a is connected to a first return pipe 83b provided on the other side surface 71b of the first nozzle 71. pipe 83b.

[0128] And, on the other side surface 71b of the first nozzle 71, first return pipes 83a, 83b, 83c, 83d are arranged.

[0129] A plane perpendicular to the air supply surface 24 and passing through the center of the air outlet 22a is defined as a reference plane F. The reference plane F is a virtual plane that divides the space between one side surface 71a and the other side surface 71b.

[0130] The first return pipes 83a, 83b, 83c, and 83d are arranged symmetrically with respect to the first forward pipes 82a, 82b, 82c, and 82d with the reference plane F as the reference.

[0131] The first outlet 91 penetrates the blower box 14 from the first nozzle 71 and is connected to the drain pipe 34.

[0132] By doing so, the first pipe 81 forms a single closed circuit.

[0133] The above is the configuration of the radiant air conditioning system 100.

[0134] Next, with reference to FIGS. 7 and 8, the air flow in the radiant air conditioning system 100 will be described.

[0135] FIG. 7 is a top view showing the air flow inside the blower device 11.

[0136] FIG. 8 is a cross-sectional view showing the flow directions of the blown air Q0 from the plurality of nozzles 70 of the blower device 11 and the induced air Q2 generated near the plurality of nozzles 70.

[0137] As shown in FIG. 7, when the blowers 15a, 15b, and 15c operate, the air in the indoor space 1 flows into the interior of the blower box 14 from the suction port 21 as the suction air A0.

[0138] The suction air A0 is sucked by the blowers 15a, 15b, and 15c, blown out as the air A1 from the blower outlets 23, temporarily accumulated in the air supply chamber 18, and sequentially supplied to the first nozzle 71, the second nozzle 72, and the intermediate nozzle 73 by the pushing force from the blowers 15a, 15b, and 15c.

[0139] Air A2a, A2b, and A2c are respectively blown into the first nozzle 71, the second nozzle 72, and the intermediate nozzle 73. Although the relationship between the respective air volumes is not strictly defined, by arranging the first nozzle 71, the second nozzle 72, and the intermediate nozzle 73 symmetrically with respect to the center line of the air supply chamber 18, it is desirable that the air volume of air A2a = the air volume of air A2b = the air volume of air A2c.

[0140] Then, while air A2a, A2b, and A2c flow in the nozzle length direction respectively, a part of them flows out in the depth direction of the drawing from the air outlets 22a, 22b, and 22c as the blown air Q0 (see Fig. 8).

[0141] Although not shown in Fig. 7, in order to make the air volume flowing out from the air outlet 22 constant regardless of the nozzle length direction, rectifying fins or the like may be provided inside the first nozzle 71, the second nozzle 72, and the intermediate nozzle 73.

[0142] As shown in Fig. 8, the air blown into the first nozzle 71, the second nozzle 72, and the intermediate nozzle 73 is discharged into the indoor space 1 as the blown air Q0 from the air outlets 22a, 22b, and 22c.

[0143] Here, since the first nozzle 71, the intermediate nozzle 73, and the second nozzle 72 discharge air volumes of the same degree from the air outlets 22a, 22b, and 22c respectively, the blown air Q0 has a wind speed distribution with peaks at intervals of the air outlets 22 without bias in the parallel direction of the first nozzle 71, the second nozzle 72, and the intermediate nozzle 73.

[0144] Since this blown air Q0 utilizes a slit-shaped air outlet and has a property of relatively high wind speed with respect to the air volume, it generates an air flow with high straightness in the blowing direction.

[0145] Further, due to this blown air Q0, a pressure difference is generated between the vicinity of the first nozzle 71, the second nozzle 72, and the intermediate nozzle 73 and the suction space 2, and suction air Q1 flowing into the suction space 2 between the first nozzle 71, the second nozzle 72, and the intermediate nozzle 73 and the ceiling surface is generated.

[0146] Here, since the suction air Q1 is air introduced into the suction space 2 having a cross-sectional area extremely large with respect to the cross-sectional areas of the air outlets 22a, 22b, and 22c, it has the property that the wind speed is very small with respect to the air volume. Generally, the relationship of the air volume is such that the air volume of the blown air Q0 < the air volume of the suction air Q1 holds. However, when the wind speed of the blown air is increased, the air volume of the blown air Q0 > the air volume of the suction air Q1 may also occur.

[0147] The above is the air flow in the radiant air conditioning system 100.

[0148] Next, with reference to FIGS. 1 and 3, the flow of water circulating inside the radiant heat generation unit 31 will be described.

[0149] First, as shown in FIGS. 1 and 3, the water introduced into the chilled and heated water generator 35 is heated or cooled in the chilled and heated water generator 35. Here, for heating or cooling, for example, a heat pump method using a heat medium is used. Then, the heated or cooled chilled and heated water is temporarily stored in a tank (not shown) built in the chilled and heated water generator 35, and by driving the water supply pump 36, it is supplied to the water supply pipe 33 at an arbitrary flow rate. Thereafter, the chilled and heated water supplied to the water supply pipe 33 is distributed and supplied to the first pipe 81 and the second pipe 84 respectively. The chilled and heated water passing through the first pipe 81 circulates near the side surface of the first nozzle 71 and is recovered into the drain pipe 34. The chilled and heated water passing through the second pipe 84 circulates near the side surface of the second nozzle 72 and then is sent to the intermediate pipe 87, circulates near the side surface of the intermediate nozzle 73, and is recovered into the drain pipe 34.

[0150] According to such a configuration, the water supplied from the water supply pipe 33 flows to the first nozzle 71 and the second nozzle 72 before reaching the intermediate nozzle 73, and is preferentially heat-exchanged by the first nozzle 71 and the second nozzle 72 of the blower device 11. Therefore, in the air-conditioned area 3, the air-conditioning amount is larger in the vicinity of the first nozzle 71 and the second nozzle 72 than in the central part of the air-conditioned area 3. Accordingly, even when the heat load of the indoor space 1 is high, the intrusion of heat into the central part of the air-conditioned area 3 is reduced, and the heat load transmitted to the central part of the air-conditioned area 3 becomes small. As a result, the air-conditioned area 3 can be kept as a comfortable space.

[0151] As described above, according to the radiation air-conditioning system 100 of the present embodiment, the configuration is such that the cold and warm water (heat medium) is preferentially passed through the nozzles at both ends (the first nozzle 71 and / or the second nozzle 72). Thereby, in a certain indoor space 1, the air-conditioning capacity in the vicinity of the boundary (boundary surface 3a) between the air-conditioned area 3 and another area not air-conditioned can be increased. That is, the heat entering the air-conditioned area 3 from the boundary surface 3a can be alleviated. As a result, the comfort of the air-conditioned area 3 can be improved. (Embodiment 2) Next, with reference to FIGS. 9, 10, and 11, Embodiment 2 of the radiation air-conditioning system 100 will be described. In the present embodiment, the same reference numerals are given to the same components as in the other embodiments, and the detailed description thereof is omitted.

[0152] FIG. 9 is a schematic diagram showing the configuration of the radiation air-conditioning system 100.

[0153] FIG. 10 is a block diagram of the control unit 51 of the radiation air-conditioning system 100.

[0154] FIG. 11 is a flowchart showing the control procedure for the opening degree of the first adjustment valve 55 by the radiation air-conditioning system 100.

[0155] The radiant air conditioning system 100 can change the air conditioning capacities of the first nozzle 71 and the second nozzle 72 by changing the amounts of water flowing through the first pipe 81 and the second pipe 84 of the radiant heat generation unit 31 based on the temperature information of a specific one of the two divided air-conditioned areas 3 in the direction parallel to the juxtaposition direction of the plurality of nozzles 70.

[0156] First, the configuration of the radiant air conditioning system 100 will be described with reference to FIG. 9.

[0157] As shown in FIG. 9, the radiant air conditioning system 100 includes a first control valve 55, a first sensor 61, and a control unit 51.

[0158] The radiant air conditioning system 100 air-conditions the air-conditioned area 3 composed of the first area 4 and the second area 5. The first sensor 61 detects the temperature information of the air-conditioned area 3 (the first area 4 or the second area 5), and performs control to adjust the opening degree of the first control valve 55 based on the detected temperature information.

[0159] In this embodiment, the air-conditioned area 3 is divided into a first area 4 and a second area 5.

[0160] The first area 4 refers to an area in the air-conditioned area 3 that includes an area air-conditioned by the air blown out from the first nozzle 71.

[0161] The second area 5 refers to an area in the air-conditioned area 3 that includes an area air-conditioned by the air blown out from the second nozzle 72.

[0162] Note that in FIG. 9, the first area 4 is an area air-conditioned by the air blown out from the first nozzle 71 and the intermediate nozzle 73.

[0163] The second area 5 is regarded as an area air-conditioned by the air blown out from the second nozzle 72 and the intermediate nozzle 73.

[0164] That is, in FIG. 9, the boundary between the first region 4 and the second region 5 is configured to be arranged at the center of the intermediate nozzle 73. However, this is just an example, and the division can be made such that one of the first region 4 and the second region 5 includes the intermediate nozzle 73 and the other region does not include the intermediate nozzle 73.

[0165] The first sensor 61 is a sensor for acquiring the thermal information of the first region 4. The first sensor 61 may be arranged not only in the space of the first region 4, on the surface of the first nozzle 71, but also outside the first region 4 within the first region 4 as long as it is possible to measure and predict the state of the heat load of the first region 4. As specific types of the first sensor 61, for example, a temperature sensor for detecting temperature, a solar radiation sensor for acquiring the thermal information of solar radiation, etc. can be adopted.

[0166] The first control valve 55 is a valve for adjusting the flow rate of water flowing into the first pipe 81 and the second pipe 84. The first control valve is a valve that can finely adjust the opening degree according to the input of a signal. For example, a generally used electromagnetic valve or the like is adopted.

[0167] The operation unit 50 (operation panel) is a terminal for setting the temperature of the air-conditioned area 3. For example, the operation unit 50 is provided on the wall surface of the indoor space 1 or the like. Note that the operation unit 50 may be a terminal that is operated from the outside using a network.

[0168] The control unit 51 receives the information from the first sensor 61 and controls the adjustment of the opening degree of the first control valve. The control unit 51 may be configured by either hardware or software. When the control unit 51 is configured as software, the control unit 51 has a computer (processor) and a storage unit (memory), and the control described later may be realized by the computer executing the program stored in the storage unit.

[0169] In Fig. 9, the control unit 51 is provided inside the blower 11, but it may be provided outside the blower 11 or outside the indoor space 1 as long as it can transmit and receive control signals.

[0170] As described above, the radiant air conditioning system 100 is configured.

[0171] Next, the adjustment of the flow rates of the water flowing into the first pipe 81 and the second pipe 84 by the first adjustment valve 55 will be described.

[0172] The first adjustment valve 55 is provided inside the first pipe 81. By adjusting the opening degree of the first adjustment valve 55, the amount of the heat medium (such as water) flowing into the first pipe 81 and / or the second pipe 84 can be adjusted. The first adjustment valve 55 is a valve that can be adjusted stepwise at a plurality of opening degrees. For example, it is desirable that the opening degree setting of the first adjustment valve 55 is two or more steps (opening degree A, opening degree B, opening degree C, opening degree D, etc.).

[0173] In this embodiment, the first adjustment valve 55 is provided on the downstream side near the first inlet 90, but it may be provided at a location where the amount of water flowing into the first pipe 81 can be adjusted, for example, on the upstream side near the first outlet 91.

[0174] Here, in this embodiment, the first adjustment valve 55 is an adjustment valve that opens at two opening degrees, namely, the opening degree A and the opening degree B, and the opening degree B is set to be larger than the opening degree A.

[0175] Specifically, when the opening degree A is set to 75% of the opening degree, the opening degree B is set to 100% of the opening degree. Therefore, when the opening degree of the first adjustment valve 55 is set to the opening degree B, the amount of water flowing through the first pipe 81 becomes larger than that when the opening degree is A, and the amount of water flowing into the second pipe 84 becomes smaller than that when the opening degree is A.

[0176] In this way, since the first adjustment valve 55 can set the opening degree of the valve at a plurality of opening degrees, the ratio of the flow rates of the water flowing through the first pipe 81 and the second pipe 84 can be adjusted.

[0177] Next, a flow in which the radiation air conditioning system 100 controls the opening degree of the first regulating valve 55 based on the temperature information acquired by the first sensor 61 will be described.

[0178] On the premise, it is assumed that the amount of water flowing into the first pipe 81 and the second pipe 84 of the radiation air conditioning system 100 of this embodiment is balanced at the opening degree A when the first regulating valve 55 is in a certain state.

[0179] When it is determined that the temperature of the air-conditioned area 3 is higher than the set temperature and is warm, the radiation air conditioning system 100 of this embodiment performs an operation of changing the ratio of the water flowing through the first pipe 81 and the second pipe 84.

[0180] And when the control unit 51 determines that the heat load on the first area 4 is large and it is necessary to increase the air conditioning amount for the first area 4, the control unit 51 switches the opening degree of the first regulating valve 55 to the opening degree B.

[0181] As a result, the inflow amount of the heat medium into the first pipe 81 increases, so the air conditioning capacity of the first nozzle 71 increases, and the air conditioning amount in the first area 4 increases. For this reason, the influence of the heat load from the indoor space 1 in the first area 4 is weakened.

[0182] In this way, the radiation air conditioning system 100 can increase the air conditioning capacity in the area with a large heat load by switching the opening degree of the first regulating valve 55 according to the magnitude of the heat load in the first area 4. For this reason, it is possible to perform air conditioning while eliminating the temperature unevenness in the air-conditioned area 3 and keep the air-conditioned area 3 comfortable.

[0183] Note that when the radiation air conditioning system 100 performs air conditioning in the air-conditioned area 3, if the temperature unevenness in the air-conditioned area 3 is not detected, or if the temperature unevenness in the air-conditioned area 3 is eliminated by the control of adjusting the opening degree of the first regulating valve 55 described above, the opening degree of the first regulating valve 55 is set to the default setting (opening degree A in this embodiment), so that the air conditioning capacities of the first nozzle 71 and the second nozzle 72 become equal.

[0184] Next, the control for adjusting the opening degree of the first regulating valve 55 performed by the control unit 51 of the radiant air conditioning system 100 of the present embodiment will be described.

[0185] First, an overview of the control performed by the control unit 51 will be described.

[0186] As described above, the radiant air conditioning system 100 of the present embodiment acquires temperature information of the first area 4 from the first sensor 61, and determines the opening degree of the first regulating valve 55 based on the determination result in the control unit 51.

[0187] In order to determine the opening degree of the first regulating valve 55, the control unit 51 refers to the set temperature input from the operation unit 50 and the temperature of the first area 4, determines whether the space in the air-conditioned area 3 is getting warm, and judges whether it is necessary to increase the air conditioning amount. Then, when the control unit 51 determines that the temperature of the first area 4 is higher than a predetermined value (reference value), the control unit 51 sets the opening degree of the first regulating valve 55 so that the inflow amount of the heat medium to the first pipe 81 becomes maximum.

[0188] Thereby, based on the temperature information of the first area 4 detected by the first sensor 61, the air conditioning capabilities of the first nozzle 71 and the second nozzle 72 can be adjusted, so that the air conditioning capabilities in the first area 4 and the second area 5 can be adjusted, and the intrusion of heat from the boundary between the first area 4 or the second area 5 can be reduced, and the air-conditioned area 3 can be kept comfortably without temperature unevenness.

[0189] As shown in FIG. 10, the radiant air conditioning system 100 includes an input unit 51a, a processing unit 51b, an output unit 51c, a storage unit 51d, and a timing unit 51e. The control unit 51 controls the opening degree of the first regulating valve 55 based on an input signal from the operation unit 50.

[0190] The input unit 51a receives information input from the operation unit 50 (set temperature of the air-conditioned area 3), information input from the first sensor 61 (temperature information of the first area 4), and opening degree information of the first regulating valve 55, and outputs them to the processing unit 51b.

[0191] The storage unit 51d stores the opening degree information of the first regulating valve 55. Further, the storage unit 51d also stores the information input by the operation unit 50. The storage unit 51d outputs the stored various information to the processing unit 51b in response to a request from the processing unit 51b.

[0192] The timing unit 51e measures the time from the start of operation of the radiant air conditioning system 100 and outputs the operation time to the processing unit 51b.

[0193] The processing unit 51b receives the information from the input unit 51a, the various information (such as the opening degree information of the first regulating valve 55) from the storage unit 51d, and the time information from the timing unit 51e.

[0194] Here, the processing unit 51b estimates the estimated temperature T1 based on the temperature information input from the first sensor 61.

[0195] The processing unit 51b determines the opening degree of the first regulating valve based on the received information and the estimated temperature T1.

[0196] The processing unit 51b outputs the information (control information) regarding the determined opening degree of the first regulating valve to the output unit 51c.

[0197] The output unit 51c outputs the control information received from the processing unit 51b to the first regulating valve 55.

[0198] Then, the first regulating valve 55 executes switching of the opening degree of the first regulating valve 55 at the opening degree based on the control information in response to the control information output from the output unit 51c.

[0199] Next, with reference to FIG. 11, the flow of the control of the opening degree of the first regulating valve 55 performed by the radiant air conditioning system 100 will be described.

[0200] As shown in FIG. 11, when the operation of the radiant air conditioning system 100 is started, the control unit 51 acquires the set temperature of the air-conditioned area 3 as the input information from the operation unit 50 (S01).

[0201] Then, the control unit 51 obtains an estimated temperature T1 based on the temperature information detected by the first sensor 61 (S02).

[0202] Here, the estimated temperature T1 is the estimated temperature in the air-conditioned area 3 (the first area 4 and / or the second area 5) estimated by the control unit 51 based on the temperature information detected by the sensor (the first sensor 61). When the sensor is a temperature sensor, the estimated temperature T1 is the temperature detected by the temperature sensor. When the sensor is a solar radiation sensor, the estimated temperature T1 is the temperature estimated based on the solar radiation amount detected by the solar radiation sensor.

[0203] Then, the control unit 51 obtains the opening degree information of the first adjustment valve 55 (S03).

[0204] Note that the setting of the opening degree of the first adjustment valve 55 at the start of operation is the default setting (here, the opening degree A).

[0205] Then, the control unit 51 compares the set temperature of the air-conditioned area 3 with the estimated temperature T1, and determines whether the estimated temperature T1 is higher or lower than the set temperature (S04).

[0206] If it is determined that the temperature of the air-conditioned area 3 is higher than the set temperature (Yes), it is determined that it is necessary to increase the air-conditioning amount of the radiant air-conditioning system 100 for cooling the air-conditioned area 3 (S0 5).

[0207] Then, when the control unit 51 determines that the estimated temperature T1 of the first area 4 is higher than the reference value (predetermined value) (Yes in S06), it determines that it is necessary to increase the air-conditioning amount of the first area 4 (S07).

[0208] Then, in order to increase the air-conditioning capacity of the first nozzle 71, the control unit 51 increases the opening degree of the first adjustment valve 55 (for example, sets it to the opening degree B) (S08).

[0209] As a result, the amount of the heat medium flowing into the first pipe 81 becomes larger than the amount flowing into the second pipe 84 (S09).

[0210] On the other hand, in step S06, when it is determined that the estimated temperature T1 of the first region 4 is lower than the reference value (predetermined value) (No in S06), the opening degree of the first adjustment valve 55 is set to the opening degree A (S12), and the flow rates of the heat medium flowing through the first pipe 81 and the second pipe 84 do not change (S13).

[0211] In S04, when the estimated temperature T1 of the air-conditioned region 3 is lower than the set temperature (No in S04), since it is not necessary to increase the cooling capacity of the air-conditioned region 3 more than necessary, the air-conditioning operation of the radiant air-conditioning system 100 is maintained (S11). Subsequently, the control unit 51 sets the opening degree of the first adjustment valve 55 to the opening degree A in order to equalize the air-conditioning capacities of the first nozzle 71 and the second nozzle 72 (S12).

[0212] After adjusting the opening degree of the first adjustment valve 55 in S09 and S13, when a predetermined time (for example, 5 minutes) has elapsed, the process returns to S01.

[0213] Also, in S04, when the estimated temperature T1 of the air-conditioned region 3 is higher than the set temperature (Yes in S04), it is necessary to increase the cooling capacity of the air-conditioned region 3 (S05). In this case, when it is determined that the estimated temperature T1 of the first region 4 is lower than the reference value (predetermined value) (No in S06), the opening degree of the first adjustment valve 55 may be decreased (S12). In this case, the flow rate of the heat medium flowing through the second pipe 84 becomes larger than the amount of the heat medium flowing through the first pipe 81 (S13).

[0214] According to the present embodiment, by adjusting the opening degree of the first adjustment valve 55 according to the temperature information detected by the first sensor 61 in the air-conditioned region 3 (the first region 4 and / or the second region 5), the air-conditioning capacities of the first nozzle 71 and / or the second nozzle 72 can be relatively increased or decreased.

[0215] That is, when it is necessary to increase the air-conditioning amount of the first region 4, the opening degree of the first adjustment valve 55 is set to be increased (for example, set to the opening degree B), so that the amount of the heat medium flowing through the first nozzle 71 is controlled to increase.

[0216] On the other hand, when it is necessary to increase the air conditioning amount in the second area 5, the opening degree of the first regulating valve 55 is set to be small, so that the amount of the heat medium flowing through the second nozzle 72 is controlled to increase.

[0217] Thus, the air conditioning capacity of the first area 4 and / or the second area 5 can be increased as needed. For this reason, heat intrusion from the boundary (the boundary surface 4a and / or the boundary surface 5a) of the first area 4 and / or the second area 5 can be reduced. As a result, while eliminating temperature unevenness in the air-conditioned area 3, it is possible to keep the air-conditioned area 3 comfortable.

[0218] Here, as a means for increasing the air conditioning capacity of the radiant air conditioning system 100, a flow for controlling the heat medium of the radiant heat generation unit 31 may be inserted into the control flow. For example, the temperature and flow rate of the heat medium may be controlled by the chilled water production chiller 35, and the temperature of the heat medium may be lowered or the flow rate of the heat medium may be increased to increase the cooling capacity of the radiant air conditioning system 100. (Example 3) Next, with reference to FIGS. 12, 13, and 14, Example 3 of the radiant air conditioning system 100 will be described. In this example, the same reference numerals are given to the same components as in other examples, and the detailed description thereof is omitted.

[0219] FIG. 12 is a schematic diagram showing the configuration of the radiant air conditioning system 100 in this example.

[0220] FIG. 13 is a block diagram of the control unit of the radiant air conditioning system 100 in this example.

[0221] FIG. 14 is a flowchart showing the control procedure for the opening degree of the first regulating valve 55 by the radiant air conditioning system 100 in this example.

[0222] The radiant air-conditioning system 100 of this embodiment is characterized by adjusting the air-conditioning capacities in the first area 4 and the second area 5 and controlling the air-conditioning capacities of a plurality of nozzles 70 based on the temperature information of each of the first area 4 and the second area 5 of the air-conditioned area 3 divided into two parts.

[0223] The radiant air-conditioning system 100 of this embodiment includes a first sensor 61 that acquires the temperature information of the first area 4 and a second sensor 62 that acquires the temperature information of the second area 5. Based on the temperature information detected by each of the first sensor 61 and the second sensor 62, the opening degree of the first regulating valve 55 is controlled.

[0224] The second sensor 62 is a sensor for acquiring the heat information of the second area 5. If the second sensor 62 can measure and predict the state of the heat load of the second area 5 within the second area 5, it may be arranged in the space of the second area 5 or on the surface of the second nozzle 72. As the specific type of the second sensor 62, for example, a temperature sensor for detecting temperature or a solar radiation sensor for acquiring the heat information of solar radiation can be adopted.

[0225] Here, the first regulating valve 55 of this embodiment is a regulating valve that opens with three opening degrees, namely, an opening degree A, an opening degree B, and an opening degree C. It is assumed that the opening degree B is set with an opening ratio larger than that of the opening degree A, and the opening degree C is set with an opening ratio smaller than that of the opening degree A. Specifically, if the opening degree A is set to 75% opening, the opening degree B has an opening ratio of 100%, and the opening degree C has an opening ratio of 50%, etc.

[0226] Therefore, when the inflow amounts of the heat medium (such as water) to the first pipe 81 and the second pipe 84 are balanced with the first regulating valve 55 at the opening degree A, the amounts of the heat medium flowing through the first pipe 81 and the second pipe 84 are such that, at the opening degree B, the inflow amount of the heat medium to the first pipe 81 is the largest and the inflow amount of the heat medium to the second pipe 84 is the smallest, and at the opening degree C, the inflow amount of the heat medium to the first pipe 81 is the smallest and the inflow amount of the heat medium to the second pipe 84 is the largest. Here, "the largest" can also be replaced with "increase" and "the smallest" can also be replaced with "decrease" in meaning.

[0227] Next, a flow in which the control unit 51 controls the opening degree of the first adjustment valve 55 based on the temperature information acquired by the first sensor 61 and / or the second sensor 62 will be described.

[0228] The control unit 51 of the radiant air conditioning system 100 of the present embodiment controls the opening degree of the first adjustment valve 55 based on the estimated temperature T1 based on the temperature information acquired by the first sensor 61 and the estimated temperature T2 based on the temperature information acquired by the second sensor 62.

[0229] Here, the estimated temperature T2 is the estimated temperature in the air-conditioned area 3 (the first area 4 and / or the second area 5) estimated by the control unit 51 based on the temperature information detected by the sensor (the second sensor 62). When the sensor is a temperature sensor, the estimated temperature T2 is the temperature detected by the temperature sensor. When the sensor is a solar radiation sensor, the estimated temperature T2 is the temperature estimated based on the solar radiation amount detected by the solar radiation sensor.

[0230] Let the difference between T1 and T2 be ΔT. ΔT may be calculated by a method capable of quantifying the difference between T1 and T2. For example, ΔT = |T1 - T2|, and it can be represented by the absolute value of the difference between T1 and T2.

[0231] When air-conditioning the air-conditioned area 3, the control unit 51 performs control to reduce the temperature difference between the first area 4 and the second area 5.

[0232] The control unit 51 can change the amount of the heat medium flowing through the pipe 80 by adjusting the opening degree of the first adjustment valve 55. Then, the control unit 51 performs control so that ΔT becomes smaller by changing the air-conditioning capacity of the plurality of nozzles 70.

[0233] The control unit 51 refers to T1 or T2 to determine whether the temperature of the first area 4 and the temperature of the second area 5 are higher than the set temperature at the operation unit 50, and determines whether the entire air-conditioned area 3 is warm. As a result, the opening degree of the first adjustment valve 55 is adjusted only when the temperature of the air-conditioned area 3 is high (when cooling of the air-conditioned area 3 is required).

[0234] Then, by referring to ΔT, the control unit 51 determines whether a temperature difference has occurred in the air-conditioned area 3, and determines the opening degree of the first adjustment valve 55.

[0235] When it is necessary to increase the air-conditioning capacity of the first area 4, the control unit 51 increases the opening degree of the first adjustment valve 55 (for example, opening degree B) so that more heat medium flows through the first pipe 81 than through the second pipe 84.

[0236] Thereby, the air-conditioning capacity of the first nozzle 71 is increased, and the first area 4 is air-conditioned more than the second area 5.

[0237] When it is necessary to increase the air-conditioning capacity of the second area 5, the control unit 51 decreases the opening degree of the first adjustment valve 55 (for example, opening degree C) so that more heat medium flows through the second pipe 84 than through the first pipe 81.

[0238] Thereby, the air-conditioning capacity of the second nozzle 72 is increased, and the second area 5 is air-conditioned more than the first area 4.

[0239] Thus, the control unit 51 can control the opening degree of the first adjustment valve 55 based on the temperature information acquired by the first sensor and the second sensor 62, and increase the air-conditioning capacity of the first nozzle 71 or the second nozzle 72. Thereby, the radiant air-conditioning system 100 can reduce the temperature difference between the first area 4 and the second area 5.

[0240] Next, control for adjusting the opening degree of the first adjustment valve 55 performed by the control unit 51 of the radiant air-conditioning system 100 of the present embodiment will be described with reference to FIG. 13. The same parts as those already shown will be omitted as appropriate.

[0241] As shown in FIG. 13, the radiant air-conditioning system 100 includes an input unit 51a, a processing unit 51b, an output unit 51c, a storage unit 51d, and a timing unit 51e.

[0242] Here, the processing unit 51b estimates the estimated temperature T1 and / or the estimated temperature T2 based on the temperature information input from the first sensor 61 and / or the second sensor 62.

[0243] The processing unit 51b of the control unit 51 controls the opening degree of the first adjustment valve 55 based on the input signal from the operation unit 50 and the estimated temperatures T1 and T2.

[0244] The input unit 51a receives the information input from the operation unit 50 (set temperature of the air-conditioned area 3), the information input from the first sensor 61 (temperature information of the first area), the information input from the second sensor 62 (temperature information of the second area), and the opening degree information of the first adjustment valve 55, and outputs them to the processing unit 51b.

[0245] The storage unit 51d stores the opening degree information of the first adjustment valve 55 and the reference value information for determining ΔT. The storage unit 51d also stores the information input by the operation unit 50. The storage unit 51d outputs the stored various information to the processing unit 51b in response to a request from the processing unit 51b.

[0246] Regarding the control of the first adjustment valve 55 performed by the control unit 51 of the radiation air-conditioning system 100 of this embodiment, it will be described with reference to FIG. 14.

[0247] As shown in FIG. 14, when the operation of the radiation air-conditioning system 100 is started, the control unit 51 acquires the set temperature of the air-conditioned area 3 as the input information from the operation unit 50 (S21).

[0248] The control unit 51 acquires the estimated temperature T1 (S22) based on the temperature information detected by the first sensor 61, the estimated temperature T2 (S22) based on the temperature information detected by the second sensor 62, and the opening degree information of the first adjustment valve 55 (S23).

[0249] Then, for each of T1 and T2, the control unit 51 compares with the set temperature of the air-conditioned area 3 and determines whether T1 or T2 is higher than the set temperature (S24).

[0250] If either T1 or T2 is determined to be equal to or higher than the set temperature (Yes in S24), the control unit 51 compares T1 and T2 to determine which of the first area 4 and the second area 5 is warmer (S25).

[0251] Here, when it is determined that the first area 4 is warmer and it is determined that it is necessary to increase the air-conditioning amount of the first area 4 compared to the second area 5 (S26), when ΔT is equal to or higher than the reference value (predetermined value) (Yes in S27), the control unit 51 controls the opening degree of the first adjustment valve 55 to be large (for example, opening degree B) in order to increase the air-conditioning capacity of the first nozzle 71 (S28).

[0252] On the other hand, in S25, when it is determined that the second area 5 is warmer and it is determined that it is necessary to increase the air-conditioning amount of the second area 5 compared to the first area 4 (S29), when ΔT is equal to or higher than the reference value (Yes in S30), the control unit 51 controls the opening degree of the first adjustment valve 55 to be small (for example, opening degree C) in order to increase the air-conditioning capacity of the second nozzle 72 (S31).

[0253] Here, when both T1 and T2 are lower than the set temperature (No in S24), the opening degree of the first adjustment valve 55 is set to the opening degree A and the operation is performed (S32).

[0254] Further, when ΔT is less than the reference value (No in S27, No in S30), it can be determined that the temperature unevenness in the air-conditioned area 3 is small and it is not necessary to increase the air-conditioning amount of either the first area 4 or the second area 5. Therefore, the control unit 51 sets the opening degree of the first adjustment valve 55 to the opening degree A so that the air-conditioning capacities of the first nozzle 71 and the second nozzle 72 are equal to each other.

[0255] Thereafter, when a predetermined time (for example, 5 minutes) has elapsed (S33), the process returns to S21, and the control flow is repeated thereafter.

[0256] As described above, the radiant air conditioning system 100 of this embodiment adjusts the opening degree of the first regulating valve 55 according to the temperature of the first sensor 61 and the estimated temperature difference of the second sensor 62, and controls to change the amount of heat medium flowing through the first pipe 81 and the second pipe 84.

[0257] Specifically, when it is determined that the temperature detected by the first sensor 61 is higher than the temperature detected by the second sensor 62, by adopting a large opening degree (for example, opening degree B) for the opening degree of the first regulating valve, the amount of heat medium flowing through the first pipe 81 can be made larger than that flowing through the second pipe 84.

[0258] On the other hand, when it is determined that the temperature detected by the first sensor 61 is lower than the temperature detected by the second sensor 62, by adopting a small opening degree (for example, opening degree C) for the opening degree of the first regulating valve, the amount of heat medium flowing through the second pipe 84 can be made larger than that flowing through the first pipe 81.

[0259] That is, according to the difference between the temperature of the first region 4 and the temperature of the second region 5, the air conditioning capacities of the first nozzle 71 and the second nozzle 72 can be changed.

[0260] Thereby, the air conditioning capacity in the first region 4 and / or the second region 5 can be adjusted, and the intrusion of heat from the boundaries (interface 4a and / or interface 5a) of the first region 4 and / or the second region 5 can be reduced. As a result, the temperature unevenness in the air-conditioned region 3 can be suppressed, so that a warm and comfortable stay can be achieved in the air-conditioned region 3.

[0261] (Modification example) Hereinafter, the modification example will be described. In the modification example, the same components as those in each embodiment are denoted by the same reference numerals, and the detailed description thereof is omitted.

[0262] Next, with reference to FIG. 15, a modification example (modification example 1) of the first embodiment will be described. In this modification example 1, the same components as those in other embodiments are denoted by the same reference numerals, and the detailed description thereof is omitted.

[0263] FIG. 15 is a schematic diagram showing the configuration of the radiant air-conditioning system 100 according to the first modified example.

[0264] As shown in FIG. 15, in the radiant air-conditioning system 100 of the first modified example, both the heat medium flowing into the first pipe 81 and the heat medium flowing into the second pipe 84 flow into the intermediate pipe 87.

[0265] According to such a configuration, after the heat medium flowing into the first pipe is used for heat exchange of the first nozzle 71, it will also be used for heat exchange of the intermediate nozzle 73.

[0266] Therefore, in the path from when the heat generated by the chilled water production chiller 35 is sent to the water supply pipe 33 until it returns to the drain pipe 34, the heat exchange path in the pipe 80 is more than that in the case of the first embodiment. Therefore, as a whole, the radiant air-conditioning system 100 can perform heat exchange efficiently.

[0267] The details of the configuration of the radiant air-conditioning system 100 of the first modified example will be described.

[0268] In the first modified example, two outlets, i.e., the first outlet 91 of the first pipe 81 and the second outlet 93 of the second pipe 84, are connected to the intermediate inlet 94 at the inlet of the intermediate pipe 87.

[0269] In this connection part, although it is in the form of a T-branch in FIG. 15, it may take the form of a Y-branch. Also, in order to prevent the backflow of the heat medium from the intermediate inlet 94, a check valve (not shown) may be provided near the first outlet 91 of the first return pipe 83 or near the second outlet 93 of the second return pipe 86.

[0270] The detailed flow of the heat medium in the radiant heat generation part 31 of the radiant air-conditioning system 100 of the first modified example will be described.

[0271] When the heat medium is sent from the water supply pump 36 to the pipe 80 in the first modified example, the heat medium flows into the first inlet 90 and the second inlet 92 and is distributed to the first pipe 81 and the second pipe 84.

[0272] The heat medium flowing into the first pipe 81 passes through the first forward pipe 82 and the first return pipe 83, passes through the first outlet 91, and flows into the intermediate pipe 87 from the intermediate inlet 94.

[0273] The heat medium flowing into the second pipe 84 passes through the second forward pipe 85 and the second return pipe 86, passes through the second outlet 93, and flows into the intermediate pipe 87 from the intermediate inlet 94.

[0274] Then, the heat medium flowing into the intermediate pipe 87 from the two pipes (the first pipe 81 and the second pipe 84) passes through the intermediate forward pipe 88 and the intermediate return pipe 89, passes through the intermediate outlet 95, enters the drain pipe 34, and is sent to the chilled water production chiller 35.

[0275] In this way, since both the heat medium flowing into the first pipe 81 and the second pipe 84 flow into the intermediate pipe 87, the heat medium used for heat exchange at the first nozzle 71 is also used for heat exchange at the intermediate nozzle 73. Therefore, the path of the heat medium can be made longer than in the case of the first embodiment, so that the efficiency of heat exchange within one path from when it flows out of the chilled water production chiller 35 until it flows in can be increased.

[0276] In addition, in the second embodiment, the combination of the first sensor 61 and the first control valve 55 is described, but the air conditioning capacities of the first nozzle 71 and the second nozzle 72 may be controlled by combining other sensors and control valves. For example, in the second embodiment, the first sensor 61 and the first control valve 55 are used to change the opening degree of the first control valve 55 in response to an increase in the heat load in the first area 4 and control the air conditioning capacity of the first nozzle 71. However, the second sensor 62 and the first control valve 55 may be used to change the opening degree of the first control valve 55 in response to an increase in the heat load in the second area 5 and control the air conditioning capacity of the second nozzle 72.

[0277] Also, a second control valve (not shown) may be provided downstream of the second inlet 92 so that the inflow amounts of the heat medium into the first pipe 81 and the second pipe 84 can be adjusted.

[0278] Further, both the first regulating valve 55 and the second regulating valve may be used simultaneously to control the inflow amount of the heat medium into the first pipe 81 and the second pipe 84.

[0279] Also, in each embodiment, it is exemplified that each regulating valve is provided at a specific location, but it is not limited thereto. As long as the amount of the heat medium flowing through the first pipe 81 and / or the second pipe 84 can be adjusted, each regulating valve may be provided at another location. For example, the first regulating valve 55 may be connected to the second pipe 84.

[0280] Also, in each embodiment, the cooling operation is described as an example, but the heating operation may also be performed. Heating operation In the case of, the control unit 51 controls each device so as to perform the reverse operation during the cooling operation.

[0281] Also, the first nozzle 71 and / or the second nozzle 72 may be provided in a perimeter zone such as near a window. According to this, it becomes possible to effectively adjust the temperature in the perimeter zone, which is a part that is easily affected by heat from the outside.

[0282] (Supplementary note) Hereinafter, supplementary notes regarding each embodiment will be provided.

[0283] A radiation air conditioning system 100 according to one aspect of the present invention is a radiation air conditioning system 100 including a plurality of nozzles 70 having air outlets 22, a blower 15 for blowing air into the plurality of nozzles 70, and a radiant heat generation unit 31. The plurality of nozzles 70 include a first nozzle 71, an intermediate nozzle 73, and a second nozzle 72. The intermediate nozzle 73 is provided with a gap between the first nozzle 71 and the second nozzle 72. Induced air Q1 and Q2 attracted by the blown air blown out from the air outlet 22 pass through the gap. The radiant heat generation unit 31 includes a water supply pipe 33, a plurality of pipes 80, and a drain pipe 34. The plurality of pipes 80 generate heat radiation in the air-conditioned area by passing a heat medium inside. The heat medium flows through the water supply pipe 33, the plurality of pipes 80, and the drain pipe 34 in this order. The plurality of pipes 80 include a first pipe 81, an intermediate pipe 87, and a second pipe 84. The first pipe 81 passes through the first nozzle 71, the intermediate pipe 87 passes through the intermediate nozzle 73, and the second pipe 84 passes through the second nozzle 72. The first inlet 90 of the first pipe 81 is provided upstream in the flow of the heat medium from the second inlet 92 of the second pipe 84. The heat medium flowing into the second pipe 84 through the second inlet 92 flows into the intermediate pipe 87 through the intermediate inlet 94 of the intermediate pipe 87 after flowing out of the second pipe 84.

[0284] According to this configuration, in the air-conditioned area 3 of the radiation air conditioning system 100, the air conditioning capacity can be enhanced not only in the vicinity of the first nozzle 71 but also in the vicinity of the second nozzle 72. Therefore, the heat entering the air-conditioned area 3 from not only the boundary surface 4a but also the boundary surface 5a can be mitigated. As a result, the air-conditioned area 3 can be kept comfortable.

[0285] Also, the heat medium flowing into the first pipe 81 through the first inlet 90 may be configured to flow into the intermediate pipe 87 through the intermediate inlet 94 after flowing out of the first pipe 81.

[0286] According to this configuration, since the heat medium after heat exchange in the first nozzle 71 can be used for heat exchange by the intermediate nozzle 73, the heat of the heat medium can be effectively utilized to operate the radiant air conditioning system.

[0287] Further, it may include a sensor (first sensor 61) for detecting the solar radiation amount or temperature, a first regulating valve 55 for adjusting the flow rate of the heat medium flowing into the first pipe 81 or the second pipe 84, and a control unit 51 for changing the opening degree of the first regulating valve 55. The control unit 51 may be configured to change the opening degree of the first regulating valve 55 according to the solar radiation amount or temperature detected by the first sensor 61.

[0288] According to this configuration, the air conditioning capacity of the first nozzle 71 or the second nozzle 72 can be increased according to the magnitude of the heat load applied to the air-conditioned area 3 of the radiant air conditioning system 100. Therefore, the air-conditioned area 3 can be kept comfortable while considering the influence of the heat load outside the air-conditioned area 3.

[0289] Also, in the air-conditioned area 3, if the area closer to the first nozzle 71 than the second nozzle 72 is defined as the first area 4, and the area closer to the second nozzle 72 than the first nozzle 71 is defined as the second area 5, the control unit 51, according to the solar radiation amount or temperature detected by the first sensor 61, when it is determined that the temperature of the first area 4 is higher than that of the second area 5, the opening degree of the first regulating valve 55 is changed so that the heat medium flowing through the first pipe 81 increases, and when it is determined that the temperature of the second area 5 is higher than that of the first area 4, the opening degree may be changed so that the heat medium flowing through the second pipe 84 increases.

[0290] According to this configuration, the air conditioning capacity of the first nozzle 71 or the second nozzle 72 can be increased according to the bias of the heat load applied to the air-conditioned area 3 of the radiant air conditioning system 100. Therefore, the air-conditioned area 3 can be kept comfortable while considering the influence of the heat load outside the air-conditioned area 3.

[0291] Further, the sensor has a first sensor 61 that detects the solar radiation amount in the first region 4 and a second sensor 62 that detects the solar radiation amount in the second region 5, and the control unit 51 may be configured to change the opening degree of the first adjustment valve 55 based on the difference between the value detected by the first sensor 61 and the value detected by the second sensor 62.

[0292] According to this configuration, the radiant air-conditioning system 100 can predict the heat load from the detected solar radiation amount and accurately adjust the air-conditioning capacity in the first region 4 and the second region 5. Therefore, the intrusion of heat from the boundary surface 4a or the boundary surface 5a can be further effectively reduced. As a result, the air-conditioned area 3 can be kept comfortably without temperature unevenness.

[0293] Further, the sensor has a first sensor 61 that detects the temperature in the first region 4 and a second sensor 62 that detects the temperature in the second region 5, and the control unit 51 may be configured to change the opening degree of the first adjustment valve 55 based on the difference between the value detected by the first sensor 61 and the value detected by the second sensor 62.

[0294] According to this configuration, the air-conditioning capacity of the first nozzle 71 or the second nozzle 72 can be increased according to the temperature difference between the first region 4 and the second region 5. Therefore, the intrusion of heat from the boundary surface 4a or the boundary surface 5a can be further effectively reduced. As a result, in the air-conditioned area 3, temperature unevenness can be reduced and kept comfortably.

[0295] As described above, the radiant air-conditioning system 100 according to the present invention has been described based on the embodiments, but the present invention is not limited to the embodiments. As long as the gist of the present invention is not deviated, various modifications conceived by those skilled in the art applied to each embodiment and forms constructed by combining the components in different embodiments are also included in the scope of the present invention.

Industrial Applicability

[0296] The radiant air conditioning system according to the present invention is useful as a partial or total air conditioning system for an indoor space or the like, capable of enhancing the thermal comfort in the conditioned area.

Explanation of Signs

[0297] 1 Indoor space 2 Induction space 3 Conditioned area 3a Interface 4 First area 4a Interface 5 Second area 5a Interface 11 Blower 14 Blower box 15, 15a, 15b, 15c Blower 18 Blowing chamber 19 Partition wall 21 Suction port 22, 22a, 22b, 22c Air outlet 23, 23a, 23b, 23c Blower air outlet 24 Blowing surface 31 Radiant heat generation part 33 Water supply pipe 34 Drain pipe 35 Chiller for generating cold and warm water 35a Heat medium coil 36 Water supply pump 42 Outdoor unit 42a Compressor 42b Expander 42c Outdoor heat exchanger 42d Blower fan 42e Four-way valve 43 Heat medium circuit 44 Heat pump 50 Operation part 51 Control part 51a Input part 51b Processing part 51c Output part 51d Memory part 51e Timing part 55 First regulating valve 61 First sensor 62 Second sensor 70 Multiple nozzles 71 First nozzle 71a One side 71b The other side 71c One end 71d The other end 72 Second nozzle 73 Intermediate nozzle 80 Pipe 81 First pipe 82, 82a, 82b, 82c, 82d First forward pipe 83, 83a, 83b, 83c, 83d First return pipe 84 Second pipe 85 Second forward pipe 86 Second return pipe 87 Intermediate pipe 88 Intermediate forward pipe 89 Intermediate return pipe 90 First inlet 91 First outlet 92 Second inlet 93 Second outlet 94 Intermediate inlet 95 Intermediate outlet 100 Radiant air conditioning system A0 Suction air A1 Air A2a, A2b, A2c Air F Reference plane Q0 Blown air Q1 Induced air Q2 Induced air

Claims

1. A plurality of nozzles having air outlets, A blower for blowing air into the plurality of nozzles, A radiant heat generating unit, and a radiant air conditioning system comprising: The plurality of nozzles include a first nozzle, an intermediate nozzle, and a second nozzle, The intermediate nozzle is provided with a gap between the first nozzle and the second nozzle, Induced air attracted by the blown air blown out from the air outlet passes through the gap, The radiant heat generating unit includes a water supply pipe, a plurality of pipes, and a drain pipe, The plurality of pipes generate heat radiation to the air-conditioned area by passing a heat medium inside, The heat medium flows through the water supply pipe, the plurality of pipes, and the drain pipe in this order, The plurality of pipes include a first pipe, an intermediate pipe, and a second pipe, The first pipe passes through the first nozzle, The intermediate pipe passes through the intermediate nozzle, The second pipe passes through the second nozzle, A first inlet of the first pipe is provided upstream of a second inlet of the second pipe in the flow of the heat medium, The radiant air conditioning system, wherein the heat medium flowing into the second pipe through the second inlet flows into the intermediate pipe through an intermediate inlet of the intermediate pipe after flowing out of the second pipe.

2. The radiant air conditioning system according to claim 1, wherein the heat medium flowing into the first pipe through the first inlet flows into the intermediate pipe through the intermediate inlet after flowing out of the first pipe.

3. A sensor for detecting solar radiation amount or temperature, A regulating valve for adjusting the flow rate of the heat medium flowing into the first pipe or the second pipe, A control unit for changing the opening degree of the regulating valve, and The control unit changes the opening degree according to the solar radiation amount or temperature detected by the sensor. The radiant air conditioning system according to claim 1.

4. Among the air-conditioned areas, A region closer to the first nozzle than the second nozzle is defined as a first region, When a region closer to the second nozzle than the first nozzle is defined as a second region, When the control unit determines that the temperature of the first region is higher than that of the second region according to the solar radiation amount or temperature detected by the sensor, the control unit changes the opening degree so that the heat medium flowing through the first pipe increases. When the control unit determines that the temperature of the second region is higher than that of the first region, the control unit changes the opening degree so that the heat medium flowing through the second pipe increases. The radiant air-conditioning system according to claim 3, characterized in that.

5. The sensor includes a first sensor that detects the solar radiation amount of the first region and a second sensor that detects the solar radiation amount of the second region. The control unit changes the opening degree based on the difference between the value detected by the first sensor and the value detected by the second sensor. The radiant air-conditioning system according to claim 4, characterized in that.

6. The sensor includes a first sensor that detects the temperature of the first region and a second sensor that detects the temperature of the second region. The control unit is based on the difference between the value detected by the first sensor and the value detected by the second sensor The control unit changes the opening degree. The radiant air-conditioning system according to claim 4, characterized in that.

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