Radiation air-conditioning system

Abstract

To provide a radiation air-conditioning system which can improve a thermal comfort in a space.SOLUTION: A radiation air-conditioning system 100 comprises a plurality of blowout nozzles 13 having slit-shaped flow-out ports (blowout slits 22), an air blower 15 for sending air to the blowout nozzles 13, and radiation heat generation devices 31 for generating thermal radiation. The plurality of blowout nozzles 13 are aligned in parallel having intervals so that the blowout ports (blowout slits 22) are located on the same plane. The radiation heat generation devices 31 are arranged at positions being side faces with respect to blowout directions of the blowout nozzles 13. Induction air induced by blowout air which is blown out of the blowout nozzles 13 passes through the intervals.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a radiant air-conditioning system that uses radiant heat from water to air-condition a room. [Background technology]

[0002] As a conventional technique, a radiant air-conditioning system is known that uses a radiant panel in which a number of pipes through which a heat transfer medium such as hot or cold water flows are embedded and which conditions a room or the like by thermal radiation (for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 7-19533 Summary of the Invention [Problem to be solved by the invention]

[0004] In conventional radiant air conditioning systems, there is almost no convection heat transfer caused by the air circulating within the space, so the space cannot be cooled by utilizing objects that generate cooling heat, and comfort cannot be improved.

[0005] Therefore, the present invention is intended to solve the above-mentioned conventional problems, and aims to provide a radiant air-conditioning system that can improve the thermal comfort of a space. [Means for solving the problem]

[0006] The radiant air conditioning system according to the present invention comprises a plurality of blow nozzles each having a slit-shaped blowing outlet, a blower for blowing air to the blowing nozzles, and a radiant heat generating unit for generating thermal radiation. The plurality of blowing nozzles are arranged side by side with a gap therebetween so that the respective blowing outlets are located on the same plane. The radiant heat generating units are each provided at a position that is a side of the blowing nozzle in the blowing direction. The system is characterized in that induced air induced by the blown air blown from the blowing nozzle passes through the gap, thereby achieving the intended purpose. Effect of the Invention

[0007] According to the present invention, a radiant air-conditioning system capable of improving the thermal comfort of a space can be provided. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a perspective view showing a basic configuration of a radiant air-conditioning system according to a first embodiment of the present invention. [Diagram 2] FIG. 2 is a side view showing the overall layout of the radiant air-conditioning system. [Diagram 3] FIG. 3 is a layout diagram showing an image of the installation of a blower device in a radiant air-conditioning system. [Figure 4] FIG. 4 is a top view showing the direction of air flow within the blower. [Diagram 5] FIG. 5 is a schematic diagram showing the connection relationship between the hot and cold water pipe of the radiant heat generating device and the hot and cold water generating device in the radiant air-conditioning system. [Figure 6] Figure 6(a) is an oblique view showing the relative positions of the blow-off nozzles and cold / hot water radiation pipes that make up the radiant air conditioning system, and Figure 6(b) is a cross-sectional view showing the relative positions of the blow-off nozzles and cold / hot water radiation pipes that make up the radiant air conditioning system. [Figure 7] FIG. 7 is a configuration diagram showing the relative positions of the blow nozzles of the air blowing device and the cold and hot water radiation pipes of the radiation heat generating device that constitute the radiant air-conditioning system. [Figure 8]FIG. 8 is a cross-sectional view showing the flow directions of the air blown from the blowing nozzle of the blower and the induced air generated in the vicinity of the hot and cold water radiation pipe. [Figure 9] Figure 9(a) is an oblique view showing the relative positions of the blow-out nozzles and cold / hot water radiation pipes that constitute a radiant air-conditioning system according to embodiment 2 of the present invention, Figure 9(b) is a cross-sectional view showing the relative positions of the blow-out nozzles and cold / hot water radiation pipes that constitute the radiant air-conditioning system, and Figure 9(c) is a side view showing the relative positions of the blow-out nozzles and cold / hot water radiation pipes that constitute the radiant air-conditioning system. [Figure 10] Figure 10(a) is an oblique view showing the positional relationship between the blow-out nozzles and cold / hot water radiation pipes that constitute a radiant air-conditioning system according to embodiment 3 of the present invention, and Figure 10(b) is a cross-sectional view showing the positional relationship between the blow-out nozzles and cold / hot water radiation pipes that constitute the radiant air-conditioning system. [Figure 11] Figure 11(a) is a cross-sectional view showing the pipe installation section of the blow-out nozzle that constitutes the radiant air-conditioning system before the cold and hot water radiation pipe is installed, and Figure 11(b) is a cross-sectional view showing the installed state of the pipe installation section of the blow-out nozzle that constitutes the radiant air-conditioning system and the cold and hot water radiation pipe. [Figure 12] Figure 12(a) is an oblique view showing the positional relationship between the blow-out nozzles and cold / hot water radiation pipes that constitute a radiant air-conditioning system according to embodiment 4 of the present invention, and Figure 12(b) is a cross-sectional view showing the positional relationship between the blow-out nozzles and cold / hot water radiation pipes that constitute the radiant air-conditioning system. [Figure 13] Figure 13(a) is a cross-sectional view showing the relative positions of the blowing area and non-blowing area in the blowing nozzle that constitutes the radiant air-conditioning system, and Figure 13(b) is a cross-sectional view showing the state of the cold and hot water radiant pipe and heat conductive grease installed in the blowing nozzle that constitutes the radiant air-conditioning system. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] The radiant air conditioning system according to the present invention includes a plurality of blow nozzles each having a slit-shaped blowing outlet, a blower for blowing air to the blowing nozzles, and a radiant heat generating unit for generating thermal radiation. The blowing nozzles are arranged side by side with a gap therebetween so that the respective blowing outlets are located on the same plane. The radiant heat generating units are each provided at a position that is a side of the blowing nozzle in the blowing direction. Induced air induced by the blown air blown from the blowing nozzle passes through the gap.

[0010] According to this configuration, the air (induced air) drawn into the gaps of the blow-out nozzle exchanges heat with the surface of the radiant heat generating part located on the side of the blow-out nozzle, and is integrated with the blow-out air from the blow-out nozzle, so that it is blown into the conditioned space as a planar uniform flow at a gentle breeze. In addition, since the induced air generally has a larger air volume than the blow-out air, the radiant heat generating part is configured to exchange heat more intensively with the induced air than with the blow-out air, and the amount of heat transfer can be increased. Furthermore, since the radiant heat generating part is attached to the side of the blow-out nozzle, the temperature is transferred to the blow-out nozzle itself by heat transfer, and the radiation area can be increased while increasing the heat exchange by the induced air flow. Therefore, air conditioning that suppresses temperature bias or draft feeling throughout the conditioned space can be realized, and a space without uneven temperature sensation can be realized. In other words, a radiant air conditioning system that can improve the thermal comfort of the space can be achieved.

[0011] In addition, in the radiant air-conditioning system according to the present invention, the radiant heat generating section may be composed of a plurality of pipes. In this way, the radiant heat generating section can be divided by a plurality of pipes, and the surface area can be increased. This promotes heat transfer from the pipes to the air or the blowing nozzle, and further enhances the effect of suppressing unevenness in the perceived temperature in the conditioned space.

[0012] The radiant air conditioning system according to the present invention may also be configured to have an outdoor unit having a heat pump, and a cold / hot water generating chiller that supplies water whose temperature has been adjusted by a refrigerant whose temperature has been adjusted by the outdoor unit, and to supply the water whose temperature has been adjusted by the cold / hot water generating chiller to a pipe. In this way, it is not necessary to use refrigerants such as fluorocarbons and alternative fluorocarbons in the pipes inside the room. Therefore, compared to the case where fluorocarbons and alternative fluorocarbons are used, construction can be easily performed, and disposal can also be easily performed.

[0013] In addition, in the radiant air-conditioning system according to the present invention, the multiple pipes may be built into the side member constituting the blow-out nozzle. In this way, when manufacturing the blow-out nozzle, it is possible to manufacture the blow-out nozzle with the pipes built in by only manufacturing the side member without separately manufacturing and attaching the pipes. Therefore, the blow-out nozzle can be manufactured more easily and at lower cost. Furthermore, by incorporating the pipes, heat transfer to the blow-out nozzle is further promoted. Therefore, heat radiation is performed with the human body or the like placed in the air-conditioned space, and the thermal comfort felt by the person living in the air-conditioned space can be further improved.

[0014] In addition, in the radiant air-conditioning system according to the present invention, the blow-out nozzle may have a pipe installation section to which a pipe can be attached on the surface of the side member constituting the blow-out nozzle, and the pipe installation section and the installation surface of the pipe may be in close contact with each other by 1 / 2 or more of the outer circumferential surface of the pipe. In this way, the pipe can be freely attached and detached even after the blow-out nozzle is installed. Therefore, after the blow-out nozzle is installed, the number of pipes can be easily adjusted to suit the house or maintenance after installation can be easily performed.

[0015] In addition, in the radiant air-conditioning system according to the present invention, the blow-out nozzle may have, inside the side member constituting the blow-out nozzle, an airflow path working surface adjacent to the internal airflow path of the blow-out nozzle and an airflow path non-working surface isolated from the internal airflow path, and the pipe may be provided on the airflow path non-working surface. In this way, the induced air generally has a larger air volume than the blown air, so that the heat exchange with the induced air is more concentrated, and the amount of heat transfer can be increased. Therefore, the heat transfer from the pipe to the air or the blow-out nozzle is promoted, and the effect of suppressing unevenness in the perceived temperature in the conditioned space can be further improved.

[0016] In addition, in the radiant air conditioning system according to the present invention, the gap between the blow-out nozzle and the pipe may be filled with heat-conductive grease, and the pipe and the blow-out nozzle may be in close contact with each other via the grease. In this way, the heat transfer area between the pipe and the blow-out nozzle can be increased, and heat transfer to the induced air can be promoted. This can further enhance the effect of suppressing unevenness in the perceived temperature in the conditioned space.

[0017] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. Note that the following embodiment is an example of the present invention, and does not limit the technical scope of the present invention. Also, each figure described in the embodiment is a schematic diagram, and the ratio of the size and thickness of each component in each figure does not necessarily reflect the actual dimensional ratio.

[0018] (Embodiment 1) First, a radiant air-conditioning system 100 according to the first embodiment will be described with reference to Fig. 1 and Fig. 2. Fig. 1 is a perspective view showing the basic configuration of the radiant air-conditioning system 100 according to the first embodiment of the present invention. Fig. 2 is a side view showing the overall layout of the radiant air-conditioning system 100. Note that Figs. 1 and 2 only show the main devices and representative configurations that make up the system, and the detailed configuration of each device will be described later with reference to Fig. 3 and subsequent figures.

[0019] The radiant air-conditioning system 100 is a system that serves to improve the thermal environment of a living space (conditioned space 1) through a combination of air flow, heat exchange, and thermal radiation, that is, to improve the thermal comfort of the living space.

[0020] Specifically, as shown in Fig. 1, the radiant air conditioning system 100 is configured to have a blower 11 and a radiant heat generating device 31. The blower 11 is configured to have blow nozzles 13a, 13b, 13c, and 13d collectively referred to as blow nozzles 13, a blower box 14, a blower 15 (see Fig. 2), and blow slits 22a, 22b, 22c, and 22d collectively referred to as blow slits 22. The radiant heat generating device 31 is configured to have cold and hot water radiation pipes 32a, 32b, 32c, and 32d collectively referred to as cold and hot water radiation pipes 32, a water supply pipe 33, a drain pipe 34, a cold and hot water generating chiller 35, a water pump 36, an outdoor unit 42, and a refrigerant circuit 43.

[0021] The radiant air-conditioning system 100 is installed in the conditioned space 1, which is part of a house. Here, the conditioned space 1 refers to a space used by residents to live their lives, and includes living rooms, dining rooms, bedrooms, private rooms, children's rooms, etc. It does not include spaces where residents do not engage in activities inside, such as closets, cupboards, or machine rooms. The conditioned space 1 is a closed space made up of walls including a ceiling, floor, and side walls, but in FIG. 1, the side walls and ceiling on the foreground of the drawing are shown as transparent in order to make it easier to see the arrangement of the radiant air-conditioning system 100 installed inside the conditioned space 1. The blower box 14, the blowing nozzle 13 (blowout nozzles 13a, 13b, 13c, 13d) that constitute the blower device 11, and the cold and hot water radiation pipe 32 (cold and hot water radiation pipes 32a, 32b, 32c, 32d) of the radiant heat generating device 31 are each arranged near the ceiling surface of the air-conditioned space 1.

[0022] The blower box 14 is a frame for integrating and housing the devices and air passages required for supplying the circulating air in the air-conditioned space 1 and blowing it to the blowing nozzles 13 (blow-out nozzles 13a, 13b, 13c, 13d). The details will be described later, but inside the blower box 14, a plurality of components including a blower 15 are installed. The blower box 14 is arranged so as to contact the ceiling surface and the side wall surface on the far side in the air-conditioned space 1. In this embodiment, the blower box 14 is arranged so as to contact the ceiling surface and the side wall surface on the far side, but it is not necessarily required to contact the inside of the air-conditioned space 1. For example, the blower box 14 may be hung from the ceiling surface or built into the lowered ceiling part of the room.

[0023] The hot and cold water generating chiller 35 is a device for generating water for generating air conditioning and thermal radiation in the conditioned space 1, and is equipped with a refrigerant coil 35a which is a mechanism for heating and cooling water inside, a tank for storing water for heating and cooling, and a mechanism for controlling the temperature of the water. Furthermore, the refrigerant coil 35a is connected to the outdoor unit 42 via a refrigerant circuit 43 through which the refrigerant flows.

[0024] The hot and cold water generating chiller 35 is connected to a water supply pipe 33 and a drain pipe 34, and is configured so that the water passing through the inside comes into contact with the refrigerant coil 35a. In other words, the temperature of the water can be adjusted by changing the temperature of the refrigerant coil 35a.

[0025] The water supply pipe 33 is a pipe for sending water whose temperature has been adjusted by the cold / hot water generating chiller 35 to the cold / hot water radiation pipe 32. The water supply pipe 33 is connected to the cold / hot water generating chiller 35, the water pump 36, and the cold / hot water radiation pipe 32 in this order from the upstream side.

[0026] The drain pipe 34 is a pipe for returning water circulated through the cold / hot water radiation pipe 32 to the cold / hot water generating chiller 35. The drain pipe 34 is connected to the cold / hot water radiation pipe 32 and the cold / hot water generating chiller 35 in this order from the upstream side. The water supply pump 36 is a pump that generates a flow of water for heating and cooling to be sent to the cold / hot water radiation pipe 32. In this embodiment, the water supply pipe 33, the drain pipe 34, the cold / hot water generating chiller 35, and the water supply pump 36 are arranged inside the air-conditioned space 1, but they may be arranged outside the air-conditioned space 1 beyond the ceiling surface, floor surface, and side wall surface that constitute the air-conditioned space 1, and the operation and effect of the present invention are not affected even if they are arranged at any position that does not interfere with the living space.

[0027] The outdoor unit 42 is an outdoor unit installed in an outdoor space, and has a heat pump 44 consisting of a compressor 42a, an expander 42b, an outdoor heat exchanger 42c, a blower fan 42d, and a four-way valve 42e. Since the outdoor unit 42 has a general configuration, detailed explanations of each device (the compressor 42a, the expander 42b, the outdoor heat exchanger 42c, the blower fan 42d, and the four-way valve 42e) will be omitted.

[0028] The heat pump 44 is connected to the refrigerant coil 35a via a refrigerant circuit 43, and the outdoor unit 42 controls the heat pump 44 to adjust the temperature of the refrigerant flowing through the refrigerant coil 35a.

[0029] The refrigerant coil 35a functions as a heat absorber or a heat radiator in a refrigeration cycle including a compressor, a radiator, an expander, and a heat absorber, and is configured to absorb (cool) or radiate (heat) heat when the refrigerant introduced from the outdoor unit 42 flows inside. Since a four-way valve 42e is connected to the refrigeration cycle including the refrigerant coil 35a, the cold / hot water generating chiller 35 can be switched between a cooling mode state in which the refrigerant flows in a first direction by the four-way valve 42e to cool water, and a heating mode state in which the refrigerant flows in a second direction by the four-way valve 42e to heat water.

[0030] Here, the first direction is the direction in which the refrigerant flows through the compressor 42a, the outdoor heat exchanger 42c, the expander 42b, and the refrigerant coil 35a in this order. The second direction is the direction in which the refrigerant flows through the compressor 42a, the refrigerant coil 35a, the expander 42b, and the outdoor heat exchanger 42c in this order. The refrigerant coil 35a can cool or heat the water introduced therein.

[0031] The blow-out nozzle 13 (blow-out nozzles 13a, 13b, 13c, 13d) plays a role of blowing air blown from the blower 15 (blowers 15a, 15b) to the air-conditioned space 1, and is a substantially rectangular parallelepiped member having blow-out slits 22 (blow-out slits 22a, 22b, 22c, 22c). In this embodiment, the blow-out nozzles 13a, 13b, 13c, 13d all have the same shape. As shown in FIG. 1, one of the two faces having the smallest cross-sectional area among the six faces of the blow-out nozzles 13a, 13b, 13c, 13d is in contact with the blower box 14, and the blow-out nozzles 13 (blow-out nozzles 13a, 13b, 13c, 13d) and the blower box 14 communicate with each other via holes through which air passes. In addition, the other of the two faces with the smallest cross-sectional area among the six faces is in contact with the side wall surface of the air-conditioned space 1 (the side wall surface opposite the back side wall surface in contact with the blower box 14). In addition, the other four faces except for the two faces with the smallest cross-sectional area are not in contact with the blower box 14, the ceiling surface of the air-conditioned space 1, or the adjacent blow-out nozzles 13 (for example, the blow-out nozzles 13a and 13b), and are installed in a state in which the air occupying the air-conditioned space 1 can pass around the blow-out nozzles 13. In this embodiment, the space through which the air around the blow-out nozzles 13 communicating with the air-conditioned space 1 passes is defined as the induction space 2. In addition, the blow-out slits 22a, 22b, 22c, and 22d are all located on the same plane that is approximately parallel to the ceiling surface. In other words, the blowing nozzles 13a, 13b, 13c, and 13d on the blowing slit 22 side are arranged side by side with gaps therebetween so as to be positioned on the same plane, forming an air blowing surface.

[0032] The detailed arrangement of other elements constituting the blower 11 will be described later with reference to FIGS.

[0033] The cold and hot water radiation pipes 32 (cold and hot water radiation pipes 32a, 32b, 32c) are hollow members for changing the temperature of the air occupying the inside of the air-conditioned space 1, or for generating thermal radiation between the wall surfaces constituting the air-conditioned space 1 and objects (such as furniture or the human body) present inside, and are configured to allow water to pass through the inside. The cold and hot water radiation pipes 32 (cold and hot water radiation pipes 32a, 32b, 32c) are each made of the same material, and it is preferable to use a material with a high emissivity such as resin for the surface in particular, although other materials can be used instead.

[0034] Next, details of the radiant heat generating device 31, such as details of the connection relationship with the other cold and hot water radiation pipes 32, the water supply pipe 33, and the drain pipe , will be described later with reference to FIG.

[0035] Next, a detailed configuration of the blower 11 will be described with reference to Fig. 3. Fig. 3 is a layout diagram showing an image of installation of the blower 11 in the radiant air-conditioning system 100.

[0036] The air blower 11 is a device that blows a planar uniform flow at a gentle breeze speed from its blowing surface into the air-conditioned space 1. In this embodiment, as shown in Fig. 1, the air blower 11 is disposed near the ceiling surface of the air-conditioned space 1, and blows a planar uniform flow at a gentle breeze speed from the ceiling surface of the air-conditioned space 1 toward the floor surface.

[0037] 3, blower device 11 includes blower nozzle 13 (blower nozzles 13a, 13b, 13c, 13d), blower box 14, blowers 15a, 15b collectively referred to as blower 15, blower chambers 18a, 18b collectively referred to as blower chamber 18, inlet 21, blower slit 22 (blower slits 22a, 22b, 22c, 22d), and blower outlets 23a, 23b collectively referred to as blower outlet 23. In this embodiment, blower device 11 is configured by dividing it into a plurality of blower units 12 (blower units 12a, 12b in this embodiment).

[0038] Here, the blower unit 12a includes blow nozzles 13a and 13b, a part of the blower box 14, a blower 15a, a blowing chamber 18a, a part of the suction port 21, blowing slits 22a and 22b, and a blower outlet 23a. The blower unit 12b includes blow nozzles 13c and 13d, a part of the blower box 14, a blower 15b, a blowing chamber 18b, a part of the suction port 21, blowing slits 22c and 22d, and a blower outlet 23b. The components constituting the blower unit 12 do not necessarily have to be configured as described above, and may include at least one blower, a blowing nozzle, a blowing chamber, a suction port, a blowing slit, and a blower outlet.

[0039] In this way, by dividing the air blowing device 11 into multiple air blowing units 12, it becomes possible to represent the air blowing mechanism in any conditioned space 1 by a combination of air blowing units 12, making it possible to generalize the system.

[0040] Next, the air flow within blower 11 will be described with reference to Fig. 4. Fig. 4 is a top view showing the air flow within blower 11.

[0041] In the blower device 11, the intake air A0 sucked in from the suction port 21 is distributed by the action of the blowers 15a and 15b into air A1a flowing into the blower unit 12a and air A1b flowing into the blower unit 12b. Here, the blower units 12a and 12b have the same configuration and are arranged symmetrically with respect to the boundary between the blower units 12a and 12b, so that the relationship between the volume of air A1a and the volume of air A1b generally holds true between the blower units 12a and 12b. Thereafter, the air A2a and the air A2b that pass through the blower outlet 23a and the blower outlet 23b are temporarily accumulated in the blowing chamber 18a and the blowing chamber 18b, respectively, and are sequentially blown to the blowing nozzles 13a, 13b and the blowing nozzles 13c, 13d by being pushed from the blowers 15a and 15b.

[0042] The nozzle air A3a, A3b, A3c, and A3d are blown to the blowing nozzles 13a, 13b, 13c, and 13d, respectively. Although the relationship between the respective air volumes is not strictly defined, it is desirable to arrange the blowing nozzles 13a and 13b, and the blowing nozzles 13c and 13d symmetrically with respect to the center lines of the blowing chambers 18a and 18b, respectively, so that the air volume of the nozzle air A3a = the air volume of the nozzle air A3b = the air volume of the nozzle air A3c = the air volume of the nozzle air A3d. The nozzle airs A3a, A3b, A3c, and A3d flow in the nozzle length direction, respectively, and part of them flows out from the blowing slits 22a, 22b, 22c, and 22d toward the back of the drawing as blown air Q0 (see FIG. 8). Although not shown in FIG. 4, fins or the like for straightening the airflow may be provided inside blow-out nozzle 13 in order to keep the amount of air flowing out from blow-out slit 22 constant regardless of the nozzle length direction.

[0043] Hereinafter, the components constituting the blower device 11 in the present embodiment will be described in detail. Note that, since the blower units 12a and 12b have equivalent components, the blower unit 12a will be described as an example of the blower unit included in the blower device 11.

[0044] As described above, the blower unit 12a is composed of blowing nozzles 13a, 13b, a part of the blower box 14, the blower 15a, the blowing chamber 18a, a part of the suction port 21, blowing slits 22a, 22b, and the blower outlet 23a.

[0045] Fan 15a generates a pressure difference between the conditioned space 1 and fan box 14, takes in circulating air from the conditioned space 1 through suction port 21, and blows the air into blowing chamber 18a. Fan 15a is equipped with impeller 16a and motor 17a (see FIG. 3), and blows air by driving impeller 16a with motor 17a.

[0046] The blowing chamber 18a is a space that temporarily stores the circulating air blown from the blower 15a, and plays a role in equalizing the distribution of the air supplied from the blower 15 to equalize the amount of air blown to the blowing nozzle 13a and the blowing nozzle 13b. In the blower box 14, the blower 15a and the blowing chamber 18a are separated by a wall (partition plate) and communicate with each other via the blower outlet 23a. The blowing chamber 18a communicates with the blowing nozzle 13a and the blowing nozzle 13b on the surface opposite to the surface connected to the blower 15a, respectively, and forms continuous air paths from the blower 15a to the blowing nozzle 13a and the blowing nozzle 13b, respectively.

[0047] The blow nozzles 13a and 13b each have blow slits 22a and 22b on the surface facing the floor surface among the six surfaces that each has. The blow slits 22 (blow slits 22a and 22b) are blow outlets for blowing air supplied through the blow chamber 18a and the blow nozzle 13 (blow nozzles 13a and 13b) to the conditioned space 1, and are formed in a slit shape along the direction in which the blow nozzle extends from the blower box 14 (corresponding to the left-right direction in FIG. 3). If the length of the blow nozzles 13a and 13b in the left-right direction is the blow nozzle length, this length is sufficiently longer than the length of one side of the contact surface with the blower box 14, and it is preferable that the contact surface with the blower box 14 has a length longer in the normal direction of the blow slits 22a and 22b than in the tangential direction. At this time, the blow nozzle length of the blow nozzles 13a and 13b is set to about 2 m when the side length of the contact surface is, for example, 17 cm vertically and 4 cm horizontally. The blow nozzle 13a and the blow nozzle 13b are arranged in parallel with each other so that the blow slits 22a and 22b are located on the same plane that is substantially parallel to the ceiling surface, and a predetermined distance (for example, 16 cm) is provided between the blow nozzle 13a and the blow nozzle 13b. In this way, it is possible to generate an air flow in a wide range of blowing directions while sufficiently securing the induction space 2 between the blow nozzle 13a and the blow nozzle 13b. The blow unit 12a and the blow unit 12b are arranged in parallel with each other so that the blow nozzle 13b and the blow nozzle 13b of the blow unit 12b are also spaced apart by the same predetermined distance (for example, 16 cm).

[0048] The blower unit 12a is configured as described above.

[0049] When the blower 15a of the blower unit 12a is operated, it sucks in air from the air-conditioned space 1 through the inlet 21 and sends the sucked air through the blower outlet 23a into the blowing chamber 18a. The air sent into the blowing chamber 18a is then sent to the blowing nozzle 13a. The air sent to the blowing nozzle 13a is blown out from the blowing slits 22a toward the floor surface of the air-conditioned space 1. The air sent into the blowing chamber 18a is also sent to the blowing nozzle 13b, just like the blowing nozzle 13a. The air sent to the blowing nozzle 13b is blown out from the blowing slits 22b toward the floor surface of the air-conditioned space 1. At this time, air (induced air Q1 described later) induced by the air blown out from the blow-out slits 22a and the blow-out slits 22b (blow-out air Q0 described later) flows in between the blow-out nozzle 13a and the blow-out nozzle 13b, and the inflowing induced air Q1 is combined with the blown out air Q0 and blown out toward the floor surface of the conditioned space 1.

[0050] Next, a detailed configuration of the radiant heat generating device 31 will be described with reference to Fig. 5. Fig. 5 is a connection schematic diagram showing the connection relationship of the hot and cold water radiation pipe 32 and other related components in the radiant heat generating device 31. Note that the refrigerant circuit 43 and the outdoor unit 42 are not shown in Fig. 5.

[0051] The radiant heat generating device 31 is a device that conditions the conditioned space 1 by radiant heat from multiple pipes through which a refrigerant such as hot or cold water flows. In this embodiment, the radiant heat generating device 31 is responsible for regulating the temperature of the induced air Q1 blown out from the blower 11, and for providing radiant heat to people and objects present in the conditioned space 1.

[0052] Specifically, as shown in FIG. 5, the radiant heat generating device 31 is configured to include a cold / hot water radiation pipe 32 (cold / hot water radiation pipes 32a, 32b, 32c, 32d), a water supply pipe 33, a drain pipe 34, a cold / hot water generating chiller 35, and a water pump 36.

[0053] The cold / hot water radiation pipes 32 have the same number of pipes on all sides of the blowout nozzle 13. The cold / hot water radiation pipes 32 are all arranged so that the distance between adjacent pipes is the same. For example, the pipes 32a1 to 32a4 in FIG. 5 are on the same plane (one side of the blowout nozzle 13) and are positioned at a constant distance. These distances are set so that the distance between adjacent pipes is 10 mm, for example. The pipes 32a5 to 32a8 in FIG. 5 are on the same plane (the other side of the blowout nozzle 13) and are also positioned at a constant distance.

[0054] In this embodiment, the cold / hot water radiation pipes 32a form a pipe group having a total of eight straight pipes (pipes 32a1, 32a2, 32a3, 32a4, 32a5, 32a6, 32a7, 32a8) on opposing sides of one blowout nozzle 13a. Similarly, the cold / hot water radiation pipe 32b, the cold / hot water radiation pipe 32c, and the cold / hot water radiation pipe 32d each form a pipe group having a total of eight straight-shaped pipes 32b1, 32b2, 32b3, 32b4, 32b5, 32b6, 32b7, 32b8 on the sides of the outlet nozzles 13b to 13d, a pipe group having pipes 32c1, 32c2, 32c3, 32c4, 32c5, 32c6, 32c7, 32c8, and a pipe group having pipes 32d1, 32d2, 32d3, 32d4, 32d5, 32d6, 32d7, 32d8, respectively.

[0055] Here, the pipes of the cold and hot water radiation pipes 32a, 32b, 32c, and 32d whose reference numbers end with "1" and "2", "3" and "4", "5" and "6", and "7" and "8" are directly connected at one end, the pipes whose reference numbers end with "1", "3", "5", and "7" are directly connected to the water supply pipe 33 at the other end, and the pipes whose reference numbers end with "2", "4", "6", and "8" are directly connected to the drain pipe 34 at the other end. In this way, the cold and hot water radiation pipes 32a, 32b, 32c, and 32d are connected to the same water supply pipe 33 and drain pipe 34, respectively, to form a single closed system. This allows the supply paths of the cold and hot water, which is the heat source, to be consolidated into one, simplifying the equipment. The cold and hot water radiation pipes 32 do not necessarily need to be connected in this order, and there is no problem as long as all of the following conditions are satisfied: (a) at least one pipe is connected to the water supply pipe 33, and the same number of pipes as the pipes connected to the water supply pipe 33 are connected to the drain pipe 34, and (b) when the pipes are directly connected to each other, one of them is connected to the water supply pipe 33 and the other is connected to the drain pipe 34. For example, the cold and hot water radiation pipes 32a, 32b, 32c, 32d may be configured such that the pipes ending in the reference numbers "1", "2", "5", and "6" are connected to the water supply pipe 33, the pipes ending in the reference numbers "3", "4", "7", and "8" are connected to the drain pipe 34, and the pipes ending in the reference numbers "1" and "3", "2" and "4", "5" and "7", and "6" and "8" are directly connected to each other.

[0056] In order to reliably supply and drain water to and from all of the cold and hot water radiation pipes 32a, 32b, 32c, and 32d, it is preferable that the water supply pipe 33 and the drain pipe 34 are made of pipes with a larger diameter than the cold and hot water radiation pipes 32a, 32b, 32c, and 32d, and are configured to handle a large flow rate. For example, if the diameter of all pipes included in the cold and hot water radiation pipe 32 is 4 mm, the water supply pipe 33 and the drain pipe 34 are made of pipes with a diameter of about 20 mm. Note that although the diameter of the water supply pipe 33 and the drain pipe 34 is expressed as "diameter," the cross section does not necessarily have to be circular, and for example, piping having a rectangular parallelepiped cross section may be used.

[0057] Next, the flow of water circulating inside the radiant heat generating device 31 will be described with reference to FIGS.

[0058] First, as shown in FIG. 1 and FIG. 5, the water introduced into the cold / hot water generating chiller 35 is heated or cooled in the cold / hot water generating chiller 35. Here, for example, a heat pump system using a refrigerant is used for heating or cooling. The heated or cooled cold / hot water is temporarily stored in a tank or the like built into the cold / hot water generating chiller 35, and is sent to the water supply pipe 33 at an arbitrary flow rate by driving the water supply pump 36. Thereafter, the cold / hot water supplied to the water supply pipe 33 is distributed and sent to each of the cold / hot water radiation pipes 32a, 32b, 32c, and 32d, and is collected in the drain pipe 34 after circulating around the side of the blowing nozzle 13 of the blower 11. The water collected in the drain pipe 34 is sequentially sent to the cold / hot water generating chiller 35 and used again as a heat source. In this way, the water in the radiation heat generating device 31 is repeatedly used as a heat source, and the system can be completed with a small amount of water. However, if there is concern that the quality of the water flowing inside may deteriorate due to scale buildup on the piping, it is preferable to ensure redundancy by setting up a separate route connected to a purification filter or water supply, etc., and purify or replace the water.

[0059] Here, an image of the transition in water temperature when using the radiant heat generating device 31 in this embodiment will be described taking use in the cooling season as an example.

[0060] In the radiation heat generating device 31, water flowing into the cold / hot water generating chiller 35 at 25°C is cooled to 18°C ​​and sent to the water supply pipe 33. Thereafter, the cold water distributed to the cold / hot water radiation pipe 32 is gradually warmed up as it passes through the air in the air-conditioned space 1 (the induced air Q1 blown out from the blower 11) and heat radiation occurs between the cold water and radiating bodies such as the walls constituting the air-conditioned space 1, furniture placed inside, or human bodies. The water that has reached 25°C when it is collected from the cold / hot water radiation pipe 32 to the drain pipe 34 is sent back to the cold / hot water generating chiller 35 and cooled to 18°C, repeating this cycle. Note that the temperature transition shown here is merely an example, and does not necessarily apply to use during the heating season, for example. In addition, if the cold or hot water passing through the water supply pipe 33 can easily change depending on the external environment, there is a concern that the capacity as a heat source may be insufficient or the temperature of the cold or hot water may become uneven among the cold or hot water radiation pipes 32a, 32b, 32c, and 32d. In such a case, it is preferable to take measures such as using a highly insulating material for the water supply pipe 33.

[0061] Next, the positional relationship between the blow-out nozzle 13 in the blower 11 and the cold / hot water radiation pipe 32 in the radiant heat generating device 31 will be described with reference to Fig. 6. Fig. 6(a) is a perspective view showing the positional relationship between the blow-out nozzle 13 and the cold / hot water radiation pipe 32 constituting the radiant air-conditioning system 100, and Fig. 6(b) is a cross-sectional view showing the positional relationship between the blow-out nozzle 13 and the cold / hot water radiation pipe 32 constituting the radiant air-conditioning system 100.

[0062] Here, the blowout nozzles 13a, 13b, 13c, and 13d have the same configuration, and the configuration and arrangement of the blowout nozzle 13a and the pipes 32a1, 32a2, 32a3, 32a4, 32a5, 32a6, 32a7, and 32a8 associated with the blowout nozzle 13a are similar to those of the blowout nozzle 13b and the pipes 32b1, 32b2, 32b3, 32b4, 32b5, 32b6, 32b7, and 32b8 associated with the blowout nozzle 13b. 2b8, blow-out nozzle 13c and pipes 32c1, 32c2, 32c3, 32c4, 32c5, 32c6, 32c7, 32c8 associated with blow-out nozzle 13c, and blow-out nozzle 13d and pipes 32d1, 32d2, 32d3, 32d4, 32d5, 32d6, 32d7, 32d8 associated with blow-out nozzle 13d, so from here on, blow-out nozzle 13a will be described as a representative. In addition, in explaining the arrangement, of the pipes 32a1, 32a2, 32a3, 32a4, 32a5, 32a6, 32a7, and 32a8, the four pipe groups of pipes 32a1, 32a2, 32a3, and 32a4 and the four pipe groups of pipes 32a5, 32a6, 32a7, and 32a8 are located symmetrically on the left and right sides of the blow-out nozzle 13 and have the same configurations and effects, so only the four pipe groups of pipes 32a1, 32a2, 32a3, and 32a4 will be explained as representatives.

[0063] 6(a), the blowout nozzle 13a is a rectangular parallelepiped member with a hollow interior, and has a blowout slit 22a, which is an opening, on one of its six faces that faces the floor surface. The blowout nozzle 13a is made of a material that transmits heat easily, such as aluminum, so that the air flowing through the hollow interior (blowout air Q0, described later) and the air passing through the gaps (induced air Q1, described later) can easily exchange heat with the cold / hot water radiation pipe 32a via the side members.

[0064] As shown in FIG. 6(b), the width of the blow-out slit 22a is narrower than the surface on which the blow-out slit 22a exists, and the hollow portion inside the blow-out nozzle 13a is structured so as to gradually narrow to match the width of the blow-out slit 22a.

[0065] The cold / hot water radiation pipe 32a is installed in close contact with the side surface of the surface (the blowing direction of the blowing nozzle 13a) on which the blowing slits 22a are provided. More specifically, the pipes 32a1 to 32a8 constituting the cold / hot water radiation pipe 32a each have a length equal to or greater than the length of the blowing nozzle 13a, and are configured to be able to adjust the temperature from the base to the tip of the blowing nozzle 13a in the longitudinal direction of the side surface of the blowing nozzle 13a.

[0066] The pipes 32a1 to 32a4 are arranged on the same plane on one side (the left side in FIG. 6) of the blowout nozzle 13a, and are arranged at a certain distance from the lower side (the blowout slit 22 side) in the order of pipes 32a1, 32a3, 32a2, and 32a4. The water flowing in from the pipes 32a1 and 32a3 circulates through the pipes 32a2 and 32a4 while exchanging heat. Similarly, the pipes 32a5 to 32a8 are arranged on the same plane on the other side (the right side in FIG. 6) of the blowout nozzle 13a, and are arranged at a certain distance from the lower side (the blowout slit 22 side) in the order of pipes 32a5, 32a7, 32a6, and 32a8. The water flowing in from the pipes 32a5 and 32a7 circulates through the pipes 32a6 and 32a8 while exchanging heat.

[0067] In this way, the cold / hot water radiation pipe 32a can transfer heat not only to the air (induced air Q1 described later) passing through the gap between the blow-out nozzle 13a and the blow-out nozzle 13b, but also to the blow-out nozzle 13a, which is in close contact with the pipe.

[0068] In this case, the entire area of ​​the blow-out nozzle 13a to which heat has been transferred is utilized to radiate heat with the human body or the like placed in the air-conditioned space 1, further improving the thermal comfort felt by the people living in the air-conditioned space 1. This effect is based on the principle that the amount of heat transferred between two objects by thermal radiation is proportional to the cross-sectional area directly facing the two objects and the distance between the two objects.

[0069] FIG. 7 is a configuration diagram showing the positional relationship between the blowing nozzle 13 of the blower 11 and the cold / hot water radiation pipe 32 of the radiation heat generating device 31 that constitute the radiant air-conditioning system 100.

[0070] As shown in FIG. 7, the blow nozzles 13 (blow nozzles 13a, 13b, 13c, 13d) are arranged so as to be offset from the ceiling surface in the air-conditioned space 1 and form an induction space 2 between the ceiling surface and the blow nozzles 13. The blow nozzles 13a, 13b, 13c, 13d each have a blow slit 22a, 22b, 22c, 22d on the surface facing the floor surface. The blow nozzles 13a, 13b, 13c, 13d are arranged offset at the same distance from the ceiling surface, and the blow slits 22a, 22b, 22c, 22d are present on the same surface. The blow nozzles 13a, 13b, 13c, 13d are arranged in parallel at equal intervals, and the blow slits 22a, 22b, 22c, 22d are also arranged in parallel at equal intervals. The arrangement intervals are, for example, such that the distance between the center lines of each blow-out nozzle 13 (the distance between each blow-out slit 22) is 200 mm, and the gap between the blow-out nozzles 13 (part of the induction space 2) is 160 mm. Each blow-out slit 22 is provided along the length direction of the blow-out nozzle 13. The position of the blow-out slit 22 is provided on a line that divides the face of the blow-out nozzle 13 into two equal parts in the parallel direction of the blow-out nozzle 13 (direction perpendicular to the length direction).

[0071] As shown in FIG. 7, in the radiant air-conditioning system 100, cold and hot water radiant pipes 32 are arranged on the side surfaces of the blow-out nozzles 13 adjacent to each other.

[0072] Next, a description will be given of the flow of blown air Q0 from the blow nozzle 13 and the flow of induced air Q1 caused by the blown air Q0 and generated near the blow nozzle 13 and the cold / hot water radiation pipe 32 with reference to Fig. 8. Fig. 8 is a cross-sectional view showing the flow direction of blown air Q0 from the blow nozzle 13 of the blower 11 and induced air Q1 generated near the cold / hot water radiation pipe 32.

[0073] As shown in FIG. 8, the air blown to the blow nozzles 13a, 13b, 13c, and 13d is discharged from the blow slits 22a, 22b, 22c, and 22d to the conditioned space 1 as blown air Q0. Here, the blow nozzles 13a, 13b, 13c, and 13d discharge the same amount of air from the blow slits 22a, 22b, 22c, and 22d, respectively, as described above, so that the blown air Q0 has a wind speed distribution with a peak at each interval of the blow slits 22 without a bias in distribution in the parallel direction of the blow nozzles 13. This blown air Q0 has a relatively high wind speed relative to the air volume by utilizing a slit-shaped blowout port, so it generates an airflow with high linearity in the blowing direction. In addition, due to this blown air Q0, a pressure difference occurs between the periphery of the blow nozzle 13 and the induction space 2, and induced air Q1 flows into the induction space 2 between the blow nozzle 13 and the ceiling surface. Here, since the induced air Q1 is air introduced into the induction space 2, which has a cross-sectional area that is very large compared to the cross-sectional area of ​​the blow-out slit 22, it has the property that the wind speed is very small relative to the air volume, and the relationship of the air volumes generally holds: blown air Q0 air volume < induced air Q1 air volume. In other words, if the capacity of the cold / hot water radiation pipe 32 is constant, a larger amount of heat can be exchanged in a shorter time when heat is transferred to the induced air Q1 than when heat is transferred to the blown air Q0.

[0074] The induced air Q1 is drawn in the blowing direction of the blown air Q0 of the blowing nozzle 13 and passes near the cold / hot water radiation pipe 32 (cold / hot water radiation pipes 32a, 32b, 32c, 32d) arranged on the side of the blowing nozzle 13.

[0075] Furthermore, when the induced air Q1 passes near the cold / hot water radiation pipe 32 and becomes the induced air Q2, it is heated or cooled by convection heat transfer. For example, when the temperature T1 of the induced air Q1 is 28°C (the same temperature as the temperature of the conditioned space 1) and the surface temperature Tp of the cold / hot water radiation pipe 32 is 18°C, the temperature T2 of the induced air Q2 is cooled to a value between the temperatures T1 and Tp (for example, 25°C). The cooled induced air Q2 then combines with the blown air Q0 from the blow-out nozzle 13, and is blown into the conditioned space 1 as a planar uniform flow at a gentle breeze.

[0076] In this way, the radiant heat generating device 31 can condition the air in the conditioned space 1 and improve thermal comfort by utilizing the blown air Q0 and induced air Q1 by the blower 11. Generally, the heat transfer coefficient of the surface of the cold / hot water radiant pipe 32 increases as the wind speed of the air flow over the surface increases, so that the generation of induced air Q1 can provide a higher air conditioning capacity than when no air flow occurs. Furthermore, since a uniform air flow can be generated on the surface, it is possible to suppress temperature unevenness in the conditioned space 1, provide a comfortable environment, and provide a cool feeling with a comfortable breeze without unevenness in the wind. Therefore, in this embodiment, the thermal comfort of the radiant air-conditioning system 100 can be further improved.

[0077] As described above, according to the radiant air-conditioning system 100 according to the first embodiment, the following effects can be obtained.

[0078] (1) The radiant air conditioning system 100 includes a plurality of blow-out nozzles 13 having slit-shaped blow-out ports (blow-out slits 22), a blower 15 that blows air to the blow-out nozzles 13, and a radiant heat generator 31 that generates thermal radiation. The plurality of blow-out nozzles 13 are arranged side by side with gaps between them so that the respective blow-out ports (blow-out slits 22) are positioned on the same plane. The radiant heat generators 31 are each provided at a position that is a side of the blow-out nozzles 13 in the blowing direction. Induced air Q1 that is induced by blown air Q0 blown from the blow-out nozzles 13 passes through the gaps.

[0079] According to this configuration, the air (induced air Q1) drawn into the gaps of the blow-out nozzle 13 exchanges heat with the surface of the cold / hot water radiation pipe 32 located on the side of the blow-out nozzle 13 to become induced air Q2, and then the induced air Q2 is combined with the blow-out air Q0 from the blow-out nozzle 13 to be sent to the conditioned space 1 as a planar uniform flow at a gentle breeze. In addition, since the induced air Q2 generally has a larger air volume than the blow-out air Q0, the cold / hot water radiation pipe 32 is configured to exchange heat with the induced air Q2 more intensively than with the blow-out air Q0, and the amount of heat transfer can be increased. Furthermore, since the cold / hot water radiation pipe 32 is attached to the side of the blow-out nozzle 13, the temperature is transferred to the blow-out nozzle 13 itself by heat transfer, and the radiation area can be increased while increasing the heat exchange by the induced air Q1. This makes it possible to realize air conditioning that suppresses temperature bias or a feeling of draft throughout the entire conditioned space 1, and to realize an air conditioned space 1 without uneven perceived temperature. In other words, it is possible to provide a radiant air conditioning system 100 that can improve the thermal comfort of the space.

[0080] (2) In the radiant air-conditioning system 100, the radiant heat generating device 31 is configured with multiple cold and hot water radiant pipes 32. This allows the radiant heat generating device 31 to be divided and the surface area for the refrigerant used to be increased. This promotes heat transfer from the cold and hot water radiant pipes 32 to the air or the blow-out nozzle 13, further enhancing the effect of suppressing unevenness in the perceived temperature in the conditioned space 1.

[0081] (3) The radiant air conditioning system 100 has an outdoor unit 42 having a heat pump 44, and a cold / hot water generating chiller 35 that sends water whose temperature has been adjusted by a refrigerant whose temperature has been adjusted by the outdoor unit 42, and is configured to send water whose temperature has been adjusted by the cold / hot water generating chiller 35 to the cold / hot water radiation pipe 32. This eliminates the need to use refrigerants such as fluorocarbons and alternative fluorocarbons in the indoor cold / hot water radiation pipe 32. Therefore, compared to the use of fluorocarbons and alternative fluorocarbons, construction can be easily performed, and disposal can also be easily carried out.

[0082] (Embodiment 2) Next, the blow-out nozzle 113 and the cold / hot water radiation pipe 32 constituting the radiant air-conditioning system 100a according to the second embodiment of the present invention will be described with reference to Fig. 9. Fig. 9(a) is a perspective view showing the positional relationship between the blow-out nozzle 113 and the cold / hot water radiation pipe 132 constituting the radiant air-conditioning system 100a according to the second embodiment of the present invention, Fig. 9(b) is a cross-sectional view showing the positional relationship between the blow-out nozzle 113 and the cold / hot water radiation pipe 132 constituting the radiant air-conditioning system 100a, and Fig. 9(c) is a side view showing the positional relationship between the blow-out nozzle 113 and the cold / hot water radiation pipe 132 constituting the radiant air-conditioning system 100a.

[0083] The radiant air-conditioning system 100a according to the second embodiment differs from the first embodiment in that the cold / hot water radiant pipe 132 is embedded in the side member of the blow-out nozzle 113. Other than this, the configuration of the radiant air-conditioning system 100a is the same as that of the radiant air-conditioning system 100 according to the first embodiment. Below, the content already explained in the first embodiment will not be explained again as appropriate, and the differences from the first embodiment will be mainly explained.

[0084] The radiant air conditioning system 100a of embodiment 2 comprises blowing nozzles 113a, 113b, 113c, and 113d collectively referred to as blowing nozzle 113 in the blower 11, and cold / hot water radiation pipes 132a, 132b, 132c, and 132d collectively referred to as cold / hot water radiation pipe 132 in the radiant heat generating device 31, but since they have the same structure, the following description will focus on blowing nozzle 113a and cold / hot water radiation pipe 132a.

[0085] In the radiant air-conditioning system 100a according to the second embodiment, as shown in Fig. 9(a) and Fig. 9(b), the cold / hot water radiation pipe 132a is built into the blow nozzle 113a as a single unit. In other words, the cold / hot water radiation pipe 132a is entirely embedded in the side member of the blow nozzle 113a and is not exposed to the outside (outer surface) of the blow nozzle 113a. Such a structure can be formed as the cold / hot water radiation pipe 132a by creating a gap inside the side member of the blow nozzle 113, for example, by manufacturing it by extrusion molding of aluminum.

[0086] More specifically, the pipes 132a1 to 132a8 constituting the hot and cold water radiation pipe 132a are embedded in the side member of the blowout nozzle 113a, respectively, and have the same length as the blowout nozzle 113a. The pipes 132a1 to 132a4 are embedded in the side member on one side (the left side in FIG. 9) of the blowout nozzle 113a, and are arranged at a certain distance from the lower side (the blowout slit 122a side) in the order of pipes 132a1, 132a3, 132a2, and 132a4. The water flowing in from the pipes 132a1 and 132a3 circulates through the pipes 132a2 and 132a4 while exchanging heat. Similarly, pipes 132a5 to 132a8 are embedded in the side member on the other side (the right side in FIG. 9) of blowout nozzle 113a, and are arranged at a certain distance from the lower side (the blowout slit 122a side) in the order of pipes 132a5, 132a7, 132a6, and 132a8. Water flowing in from pipes 132a5 and 132a7 circulates through pipes 132a6 and 132a8 while exchanging heat.

[0087] The ends of the pipes (pipes 132a1 to 132a8) are threaded, and the water supply pipe 33 and the drain pipe 34 can be connected to each other through a screw-type connection port. The opposite side of the connection port of the water supply pipe 33 and the drain pipe 34 is connected to the return pipes 45a1 and 45a2 through the same screw-type connection port to form a flow path. Specifically, as shown in FIG. 9(c), the water supply pipe 33 is connected to one end of the pipes 132a1 and 132a3 in the blowout nozzle 113a. The other ends of the pipes 132a1 and 132a3 are connected to one end of the pipes 132a2 and 132a4 through the return pipes 45a1 and 45a2, respectively, and the other ends of the pipes 132a3 and 132a4 are connected to the drain pipe 34.

[0088] With this configuration, heat transfer from the cold / hot water radiation pipe 132a to the blow-out nozzle 113a itself is promoted, and it becomes possible to change the temperature of the blow-out nozzle 113a itself. In other words, the entire area of ​​the blow-out nozzle 113 to which heat is transferred is more effectively utilized, and heat is radiated to the human body or the like placed in the air-conditioned space 1, and the thermal comfort felt by the people living in the air-conditioned space 1 can be further improved.

[0089] As described above, according to the radiant air-conditioning system 100a according to the second embodiment, the following effects can be obtained.

[0090] (4) In the radiant air-conditioning system 100a, the multiple cold / hot water radiation pipes 132 are built into the side members that make up the blow-out nozzle 113. This allows the blow-out nozzle 113 with the cold / hot water radiation pipes 132 built in to be manufactured by only manufacturing the side members, without having to separately manufacture and attach the cold / hot water radiation pipes 132. This allows the blow-out nozzle 113 to be manufactured more easily and at lower cost. In addition, the incorporation of the cold / hot water radiation pipes 132 further promotes heat transfer to the blow-out nozzle 113, and heat radiation is performed with the human body and the like placed in the air-conditioned space 1, further improving the thermal comfort felt by the people living in the air-conditioned space 1.

[0091] (Embodiment 3) Next, a radiation air-conditioning system 100b according to the third embodiment will be described with reference to Figs. 10 and 11. Fig. 10(a) is a perspective view showing the arrangement relationship between the blow-out nozzle 213 and the cold / hot water radiation pipe 232 constituting the radiation air-conditioning system 100b according to the third embodiment of the present invention, and Fig. 10(b) is a cross-sectional view showing the arrangement relationship between the blow-out nozzle 213 and the cold / hot water radiation pipe 232 constituting the radiation air-conditioning system 100b. Fig. 11(a) is a cross-sectional view showing the pipe installation section 238 before the cold / hot water radiation pipe 232 is attached to the blow-out nozzle 213 constituting the radiation air-conditioning system 100b, and Fig. 11(b) is a cross-sectional view showing the installation state of the pipe installation section 238 of the blow-out nozzle 213 and the cold / hot water radiation pipe 232 constituting the radiation air-conditioning system 100b.

[0092] The radiant air-conditioning system 100b according to the third embodiment differs from the first embodiment in that the blow-out nozzle 213 has a pipe installation section 238, and the cold / hot water radiation pipe 232 is removable from within the side member of the blow-out nozzle 213. Other than this, the configuration of the radiant air-conditioning system 100b is the same as that of the radiant air-conditioning system 100 according to the first embodiment. Below, the contents already explained in the first embodiment will not be explained again as appropriate, and the differences from the first embodiment will be mainly explained.

[0093] The radiant air conditioning system 100b of embodiment 3 comprises blowing nozzles 213a, 213b, 213c, 213d collectively referred to as blowing nozzle 213 in the blower 11, and cold / hot water radiation pipes 232a, 232b, 232c, 232d collectively referred to as cold / hot water radiation pipe 232 in the radiant heat generating device 31, but since they have the same structure, the following description will focus on blowing nozzle 213a and cold / hot water radiation pipe 232a.

[0094] In the radiant air conditioning system 100b of embodiment 3, as shown in Figures 10(a) and 10(b), the cold / hot water radiation pipe 232a is partially embedded in the side member of the blow-out nozzle 213a, and a portion (e.g., approximately half) of it is exposed to the side of the blow-out nozzle 213a.

[0095] 11(a), in the radiant air-conditioning system 100b, the blow-out nozzle 213a has a pipe installation section (also called a pipe mounting section) 238a on its side. The pipe installation section 238a is provided on the side of the blow-out nozzle 213a in accordance with the position where the cold / hot water radiation pipe 232a is mounted, and is a recess in the shape of a circle with a portion of the circle open over a range of more than one-quarter and less than one-half of the entire circle.

[0096] The inner diameter of the circle constituting the recess is slightly larger than the outer diameter of the cold / hot water radiation pipe 232a, and the cold / hot water radiation pipe 232a fits into the recess. The open portion of the recess is smaller than the outer diameter of the cold / hot water radiation pipe 232a by making the open range less than half of the entire circle. Therefore, when installing, the cold / hot water radiation pipe 232a is crushed within a reversible range, or the open portion of the pipe installation portion 238a is pushed open, so that the cold / hot water radiation pipe 232a can be fitted into the recess (see FIG. 11(b)). As a specific example, if the diameter of the cold / hot water radiation pipe 232a is 4 mm, the maximum diameter of the recess is 4.2 mm, and the open portion of the pipe installation section 238a is 3.8 mm, the cold / hot water radiation pipe 232a fitted into the pipe installation section 238a can be removed in the reverse order of how it was fitted.

[0097] The pipes 232a1 to 232a8 constituting the cold / hot water radiation pipe 232a are fitted into the pipe installation parts 238a1 to 238a8 collectively called the pipe installation part 238a, so that each of them is partially embedded in the surface of the side member of the blow-out nozzle 213a. The pipes 232a1 to 232a4 are partially embedded in the surface of the side member on one side (the left side in FIG. 11) of the blow-out nozzle 213a, and are arranged at a certain distance from the lower side (the blow-out slit 222a side) in the order of pipes 232a1, 232a3, 232a2, and 232a4. The water flowing in from the pipes 232a1 and 232a3 circulates through the pipes 232a2 and 232a4 while exchanging heat. Similarly, pipes 232a5 to 232a8 are partially embedded in the surface of the side member on the other side (the right side in FIG. 11) of blowout nozzle 213a, and are arranged at a certain distance from the lower side (the blowout slit 222a side) in the order of pipes 232a5, 232a7, 232a6, and 232a8. Water flowing in from pipes 232a5 and 232a7 circulates through pipes 232a6 and 232a8 while exchanging heat.

[0098] With this configuration, when the cold / hot water radiation pipe 232 is attached to the pipe installation part 238, more than half of the outer circumferential surface of the cold / hot water radiation pipe 232 is in close contact with the pipe installation part 238 and is hidden from the outside, while the remaining part is exposed to the outside. Also, since the cold / hot water radiation pipe 232 can be freely attached and detached, the number of cold / hot water radiation pipes 232 can be changed depending on the room to which the installation is performed, and maintenance after installation can be easily performed.

[0099] As described above, according to the radiant air-conditioning system 100b according to the third embodiment, the following effects can be obtained.

[0100] (5) In the radiant air-conditioning system 100, the blow-out nozzle 213 has a pipe installation section 238 to which the cold / hot water radiation pipe 232 can be attached on the surface of the side member constituting the blow-out nozzle 213, and the pipe installation section 238 and the installation surface of the cold / hot water radiation pipe 232 are in close contact with each other by at least 1 / 2 of the outer circumferential surface of the cold / hot water radiation pipe 232. In this manner, the cold / hot water radiation pipe 232 can be freely attached and detached even after the blow-out nozzle 213 is installed in the house. Therefore, after the blow-out nozzle 213 is installed, the number of pipes can be easily adjusted to suit the house, or maintenance after installation can be easily performed.

[0101] (Embodiment 4) Next, referring to Fig. 12 and Fig. 13, a radiation air-conditioning system 100c according to the fourth embodiment will be described. Fig. 12(a) is a perspective view showing the arrangement relationship between the blow-out nozzle 313 and the cold / hot water radiation pipe 332 constituting the radiation air-conditioning system 100c according to the fourth embodiment of the present invention, and Fig. 12(b) is a cross-sectional view showing the arrangement relationship between the blow-out nozzle 313 and the cold / hot water radiation pipe 332 constituting the radiation air-conditioning system 100c. Fig. 13(a) is a cross-sectional view showing the arrangement relationship between the air-blowing area (air-blowing air passage working surface 339) and the non-air-blowing area (air-blowing air passage non-working surface 340) in the blow-out nozzle 313 constituting the radiation air-conditioning system 100c, and Fig. 13(b) is a cross-sectional view showing the state of the cold / hot water radiation pipe 332 and the heat-conductive grease 341 installed in the blow-out nozzle 313 constituting the radiation air-conditioning system 100c.

[0102] The radiant air-conditioning system 100c according to the fourth embodiment differs from the first embodiment in that the cold / hot water radiation pipe 332 is selectively arranged on the non-working surface 340 of the air-blowing air passage inside the blow-out nozzle 313. The rest of the configuration of the radiant air-conditioning system 100c is the same as the radiant air-conditioning system 100 according to the first embodiment. Below, the content already explained in the first embodiment will not be explained again as appropriate, and the points that differ from the first embodiment will be mainly explained.

[0103] The radiant air-conditioning system 100c according to the fourth embodiment includes blow-out nozzles 313a, 313b, 313c, and 313d collectively referred to as blow-out nozzle 313 in the blower 11, cold and hot water radiation pipes 332a, 332b, 332c, and 332d collectively referred to as cold and hot water radiation pipe 332 in the radiant heat generating device 31, air blowing air passage action surfaces 339a, 339b, 339c, and 339d collectively referred to as air blowing air passage action surface 339, and a blowing air passage action surface 339b. The fan includes air passage non-operating surfaces 340a, 340b, 340c, and 340d collectively referred to as air passage non-operating surface 340, and heat conductive grease 341a, 341b, 341c, and 341d collectively referred to as heat conductive grease 341, but since they have the same structure, the following description will focus on blow-out nozzle 313a, cold / hot water radiation pipe 332a, air passage operating surface 339a, air passage non-operating surface 340a, and heat conductive grease 341a.

[0104] In radiant air-conditioning system 100c according to the fourth embodiment, blow-out nozzle 313a has internal air-blowing air passage acting surface 339a and air-blowing air passage non-acting surface 340a, as shown in FIG.

[0105] The airflow passage action surface 339a is a member of an inclined surface portion on the airflow passage side in a concept body formed so that the hollow portion inside the blow-out nozzle 313a gradually narrows to match the width of the blow-out slit 322a. The airflow passage action surface 339 is a surface that exists in the inner direction of the blow-out nozzle 313a, and is hardly exposed to the conditioned space 1.

[0106] Air-blowing air passage non-acting surface 340a is a member of an L-shaped portion of a structure corresponding to air-blowing air passage acting surface 339 in the region near blow-out slit 322a. Air-blowing air passage non-acting surface 340a is a surface that exists in the outward direction of blow-out nozzle 313a, and one surface thereof is exposed to air-conditioned space 1.

[0107] The air-blowing air passage acting surface 339a and the air-blowing air passage non-acting surface 340a are not in close contact with each other except at their ends.

[0108] In other words, when the temperature of the air-flow passage acting surface 339a changes, a heat transfer effect occurs for the blown air Q0, but heat radiation is unlikely to occur to people or objects in the air-conditioned space 1. On the other hand, when the temperature of the air-flow passage non-acting surface 340a changes, in addition to the heat transfer effect to the induced air Q1, heat radiation also occurs to people or objects in the air-conditioned space 1.

[0109] In the radiant air conditioning system 100c, as shown in Figures 12(a) and 12(b), the cold / hot water radiation pipe 332a is disposed on the surface of the airflow duct non-working surface 340a inside the blow-out nozzle 313a. In other words, although the cold / hot water radiation pipe 332a is disposed on the side of the blow-out nozzle 313a, it is configured so as not to be exposed to either the blow-out duct or the induction duct.

[0110] More specifically, the pipes 332a1 to 332a8 constituting the cold / hot water radiation pipe 332a are arranged on the surface of the airflow passage non-working surface 340a inside the blow-out nozzle 313a, and are configured to have a length equal to or longer than the length of the blow-out nozzle 313a. The pipes 332a1 to 332a4 are arranged on the surface of the airflow passage non-working surface 340a on one side (the left side in FIG. 12) of the blow-out nozzle 313a, and are arranged at a certain distance from the lower side (the blow-out slit 322a side) in the order of pipes 332a1, 332a3, 332a2, and 332a4. The water flowing in from the pipes 332a1 and 332a3 circulates through the pipes 332a2 and 332a4 while exchanging heat. Similarly, pipes 332a5 to 332a8 are arranged on the surface of air-blowing air-passage non-acting surface 340a on the other side (the right side in FIG. 12) of blow-out nozzle 313a, and are arranged at a certain distance from the lower side (the blow-out slit 322a side) in the order of pipes 332a5, 332a7, 332a6, and 332a8. Water flowing in from pipes 332a5 and 332a7 circulates through pipes 332a6 and 332a8 while exchanging heat.

[0111] Also, the cold / hot water radiation pipe 332a is in close contact with the airflow non-acting surface 340a. In other words, in this case, the cold / hot water radiation pipe 332a is less likely to transfer heat to the nozzle air A3a (see FIG. 4) passing through the blowout nozzle 313a, and has a greater effect of transferring heat to the induced air Q1, which is air passing through the side of the blowout nozzle 313a as an induced airflow.

[0112] Generally, the relationship of air volume is such that the air volume of blown air Q0 is less than the air volume of induced air Q1. By doing this, the heat transfer from the cold / hot water radiation pipe 332a can be concentrated on the induced air Q1, which has a larger air volume.

[0113] Furthermore, as shown in FIG. 13(b), the periphery of the cold / hot water radiation pipe 332a and the non-acting surface of the airflow duct 340a is filled with heat-conductive grease 341a. In other words, the cold / hot water radiation pipe 332a and the blowing nozzle 313a are in close contact with each other via the heat-conductive grease 341a. In this way, the heat-conductive area between the cold / hot water radiation pipe 332a and the non-acting surface of the airflow duct 340a can be increased via the heat-conductive grease 341a. In this case, the area of ​​the non-acting surface of the airflow duct 340a is utilized to radiate heat with the human body and the like placed in the air-conditioned space 1, and the thermal comfort felt by the person living in the air-conditioned space 1 can be further improved.

[0114] As described above, according to the radiant air-conditioning system 100c according to the fourth embodiment, the following effects can be obtained.

[0115] (6) In the radiant air-conditioning system 100c, the blow-out nozzle 313 has an air-flow duct working surface 339 adjacent to the internal air passage of the blow-out nozzle 313 and an air-flow duct non-working surface 340 isolated from the internal air passage inside the side member constituting the blow-out nozzle 313, and the cold / hot water radiant pipe 332 is provided on the air-flow duct non-working surface 340. In this way, the induced air Q2 generally has a larger air volume than the blown air Q0, so that the heat exchange with the induced air Q2 is more intensive than with the blown air Q0, and the amount of heat transfer can be increased. This promotes heat transfer from the pipe to the air or the blow-out nozzle 313, and further enhances the effect of suppressing unevenness in the perceived temperature in the conditioned space 1.

[0116] (7) The radiant air-conditioning system 100c is configured such that the gap between the blow-out nozzle 313 and the cold / hot water radiation pipe 332 is filled with heat-conductive grease 341, and the cold / hot water radiation pipe 332 and the blow-out nozzle 313 are in close contact with each other via the heat-conductive grease 341. This increases the heat transfer area between the cold / hot water radiation pipe 332 and the blow-out nozzle 313, and promotes heat transfer to the induced air Q1. This further enhances the effect of suppressing unevenness in the perceived temperature in the conditioned space 1.

[0117] The present disclosure has been described above based on the embodiments. These embodiments are merely examples, and it will be understood by those skilled in the art that various modifications are possible in the combination of each component or each treatment process, and that such modifications are also within the scope of the present disclosure.

[0118] In the radiation air-conditioning system 100 according to the first embodiment, the cold / hot water radiation pipes 32 are arranged on the same plane as the side of the blow-out slit 22, but this is not limited thereto. As long as the cold / hot water radiation pipes 32 are arranged so as to be exposed to the air-conditioned space 1 without being shaded by the blow-out nozzle 13, for example, all the cold / hot water radiation pipes 32 may be arranged on the same plane downstream of the plane formed by the blow-out slit 22 where the blow-out air Q0 flows. Alternatively, each of the cold / hot water radiation pipes 32 may be arranged in a space formed in a gap between adjacent blow-out nozzles 13. In this case, all the cold / hot water radiation pipes 32 may be arranged on the same plane, or may be arranged differently. Even in this way, there is no obstacle between the cold / hot water radiation pipes 32 and the air-conditioned space 1, so that heat radiation can be promoted. For this reason, the thermal comfort due to the radiant heat can be further improved.

[0119] In addition, in the radiant air-conditioning system 100 according to the first embodiment, the group of pipes arranged between the blow-out nozzles 13 is configured with four pipes, but this is not limited to this. As long as at least one pipe is connected to the water supply pipe 33 and the drain pipe 34 and the number of pipes connected is the same, for example, the number of pipes constituting the group of pipes may be 2, 6, 8, etc.

[0120] In the radiant air-conditioning system 100 according to the first embodiment, the blower 11 is offset from the ceiling surface constituting the air-conditioned space 1, and the blown air Q0 from the blowing nozzle 13 is blown from the ceiling surface toward the floor surface, but this is not limited to the above. For example, the blower 11 may be offset from the side wall surface of the air-conditioned space 1, and the blown air Q0 from the blowing nozzle 13 may be blown toward the opposite side wall surface. Even in this way, it is possible to take in the induced air Q1 over a wide range from the induction space 2 between the side wall surface and the blowing nozzle 13, and achieve stable blowing toward the opposite side wall surface.

[0121] In addition, in the radiant air-conditioning system 100 according to the first embodiment, the material of the blow-out nozzle is a material that easily transmits heat, such as aluminum, but the material is not limited to this. For example, by using a material that does not easily transmit heat, such as resin, it is possible to suppress heat transfer to the air and increase heat radiation from the pipe itself, thereby adjusting the balance of air conditioning. [Industrial Applicability]

[0122] The radiant air-conditioning system according to the present invention is useful as one that can increase thermal comfort in a conditioned space. [Explanation of symbols]

[0123] 100 Radiant air conditioning system 100a Radiant air conditioning system 100b Radiant air conditioning system 100c Radiant Air Conditioning System 1 Conditioned space 2. Attractive Space 11 Blower 12, 12a, 12b Blower unit 13, 13a, 13b, 13c, 13d Blowing nozzle 113, 113a, 113b, 113c, 113d Blowing nozzle 213, 213a, 213b, 213c, 213d Blowing nozzle 313, 313a, 313b, 313c, 313d Blowing nozzle 14 Blower Box 15, 15a, 15b blower 16a, 16b impeller 17a, 17b Motor 18, 18a, 18b Blower chamber 21 Intake port 22, 22a, 22b, 22c, 22d Blowing slits 122, 122a, 122b, 122c, 122d Blowing slits 222, 222a, 222b, 222c, 222d Blowing slits 322, 322a, 322b, 322c, 322d Blowing slits 23, 23a, 23b Blower outlet 31 Radiation heat generator 32, 32a, 32b, 32c, 32d Hot and cold water radiant pipes 132, 132a, 132b, 132c, 132d Hot and cold water radiant pipes 232, 232a, 232b, 232c, 232d Hot and cold water radiant pipes 332, 332a, 332b, 332c, 332d Hot and cold water radiant pipes 32a1, 32a2, 32a3, 32a4, 32a5, 32a6, 32a7, 32a8 pipes 132a1, 132a2, 132a3, 132a4, 132a5, 132a6, 132a7, 132a8 pipes 232a1, 232a2, 232a3, 232a4, 232a5, 232a6, 232a7, 232a8 pipes 332a1, 332a2, 332a3, 332a4, 332a5, 332a6, 332a7, 332a8 pipes 32b1, 32b2, 32b3, 32b4, 32b5, 32b6, 32b7, 32b8 pipes 32c1, 32c2, 32c3, 32c4, 32c5, 32c6, 32c7, 32c8 pipes 32d1, 32d2, 32d3, 32d4, 32d5, 32d6, 32d7, 32d8 pipes 33 Water supply pipe 34 Drain pipe 35 Hot and cold water generating chiller 35a Refrigerant coil 36 Water Pump 238, 238a, 238a1, 238a2, 238a3, 238a4, 238a5, 238a6, 238a7, 238a8 Pipe installation section 339, 339a, 339b, 339c, 339d Air duct working surface 340, 340a, 340b, 340c, 340d Air duct non-active surface 341, 341a, 341b, 341c, 341d Thermally conductive grease 42 Outdoor unit 42a Compressor 42b Expander 42c outdoor heat exchanger 42d Blower fan 42e Four-way valve 43 Refrigerant circuit 44 Heat Pump 45a1, 45a2 folded piping A0 Intake air A1a, A1b Air A2a, A2b Air A3a, A3b, A3c, A3d Nozzle Air Q0 Blowout air Q1 Induced air Q2 Induced air

Claims

1. A plurality of blowout nozzles each having a slit-shaped blowout port, a blower that blows air to the blowout nozzles, a radiant heat generating unit composed of pipes that generates radiant heat, comprising: the plurality of blowout nozzles are arranged in parallel with gaps such that the blowout ports are located on the same plane, the radiant heat generating units are respectively provided at positions that are the sides with respect to the blowout direction of the blowout nozzles, a radiant air conditioning system in which induced air attracted by the blowout air blown from the blowout nozzles passes through the gap.

2. The radiant air conditioning system according to claim 1, wherein the pipes constituting the radiant heat generating unit are composed of a plurality of pipes.

3. having an outdoor unit having a heat pump and a chilled water generation chiller that sends water whose temperature is adjusted by a refrigerant whose temperature is adjusted by the outdoor unit, The radiant air conditioning system according to claim 2, wherein water whose temperature is adjusted by the chilled water generation chiller is sent to the pipes.

4. The radiant air conditioning system according to claim 3, wherein the pipes are built in side members constituting the blowout nozzles.

5. the blowout nozzles have a pipe installation portion on the surface of a side member constituting the blowout nozzles, where the pipe can be attached, The radiant air conditioning system according to claim 3, wherein the pipe installation portion and the installation surface of the pipe are in close contact with 1 / 2 or more of the outer peripheral surface of the pipe.

6. the blowout nozzles have a blower air passage acting surface adjacent to the internal air passage of the blowout nozzles and a blower air passage non-acting surface isolated from the internal air passage inside a side member constituting the blowout nozzles, The radiant air conditioning system according to claim 3, wherein the pipes are provided on the blower air passage non-acting surface.

7. a heat conductive grease is filled in the gap at the position where the blowout nozzles and the pipes are adjacent, The radiant air conditioning system according to claim 5, wherein the pipes and the blowout nozzles are in close contact via the grease.

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