Air blower nozzle and radiant air conditioning system equipped therewith

Abstract

The present invention provides a fan nozzle or radiant air conditioning system that improves the thermal comfort of a space. In particular, it promotes heat transfer of the refrigerant. [Solution] The blower nozzle 100 has a main body 110, a ventilation opening 120, an outlet 130, an air passage 140, and a refrigerant path section 150, wherein the outlet 130 is slit-shaped with an elongated shape from the first surface 111 to the fourth surface 114, the refrigerant path section 150 is formed inside the main body 110 on the inside of the second surface 112 or the third surface 113, and by passing refrigerant through the inside of the refrigerant path section 150, heat radiation is generated in the air-conditioned space 2, and the air that has passed through the ventilation opening 120 by the blower 220 passes through the air passage 140 and is blown out from the outlet 130, such that "(path contact part height h / maximum width inside path w) > (maximum height H of air passage / maximum width W of air passage)".

Description

Technical Field

[0001] The present disclosure relates to a blower nozzle and a radiant air conditioning system.

Background Art

[0002] Conventionally, a radiant air conditioning system using a radiant panel that embeds a number of pipes through which a refrigerant such as chilled water or hot water flows in a panel and air-conditions a room or the like by heat radiation is 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 there is almost no convective heat transfer by the air circulating in the space, there is a problem that the space cannot be cooled and the comfort cannot be improved.

[0005] Therefore, the present disclosure is conceived from the above conventional problems, and an object thereof is to provide a blower nozzle or a radiant air conditioning system capable of improving the thermal comfort of a space.

[0006] Note that the thermal comfort is the comfort felt by a person in the space when the space approaches an appropriate temperature.

Means for Solving the Problems

[0007] And, in order to achieve this object, the blower nozzle according to one aspect of the present disclosure is a blower nozzle having a main body, a ventilation opening, a blowing outlet, an air passage, and a refrigerant passage portion, The main body has a first surface, a second surface, a third surface, a fourth surface, an outlet surface, and an opposite surface. The first side has ventilation openings, A ventilation opening is an opening through which air from a blower can pass. The second side is connected to the first side. The third side is opposite the second side, The fourth side is opposite the first side, The discharge surface is connected to the first surface, second surface, third surface, and fourth surface, and has an outlet. The opposite side faces the outlet surface. The air outlet is slit-shaped, becoming elongated from the first surface to the fourth surface. The air passage is formed inside the main body. The refrigerant path is formed inside the main body, on the inside of the second or third surface. By passing the refrigerant through the refrigerant path, heat radiation is generated in the air-conditioned space. The air blown by the fan passes through the ventilation opening, then through the air duct, and is then blown out from the outlet. Let the direction from the second face to the third face be the +x direction. The direction from the first face to the fourth face is defined as the +y direction. The direction from the outlet surface toward the opposite surface is defined as the +z direction. Let H be the maximum length of the wind tunnel in the z-direction. Let W be the maximum length of the airflow path in the x-direction. The portion where the refrigerant flowing inside the refrigerant path comes into contact with the second or third surface is defined as the path contact portion. Let the length of the path contact portion in the z direction be the path contact portion height h. If the maximum length in the x-direction inside the refrigerant path is denoted as the maximum width w inside the path, "(h / w) > (H / W)". [Effects of the Invention]

[0008] According to this disclosure, it is possible to improve the thermal comfort of a space. [Brief explanation of the drawing]

[0009] [Figure 1] Perspective view showing the configuration of the radiant air-conditioning system according to Example 1 [Figure 2] Perspective view showing the air supply nozzle in the radiant air-conditioning system [Figure 3] Cross-sectional view showing the dimensional relationship of the air supply nozzle [Figure 4] Top view showing the flow directions of chilled / hot water and air in the radiant air-conditioning system [Figure 5] Side view showing the configuration of the radiant air-conditioning system and the flow direction of air [Figure 6] Cross-sectional view showing the flow of the blown-out air from the air supply nozzle and the surrounding induced air in the radiant air-conditioning system [Figure 7] Cross-sectional view showing Modification 1 of the air supply nozzle

Mode for Carrying Out the Invention

[0010] Hereinafter, embodiments of the present disclosure will be described with reference to the drawings.

[0011] In each figure, the x-axis, y-axis, and z-axis are axes orthogonal to each other. The x-axis represents the width direction of the main body 110 of the air supply nozzle 100. The y-axis represents the length direction of the main body 110. The z-axis represents the height direction of the main body 110.

[0012] (Example 1) As shown in FIG. 1, the radiant air-conditioning system 1 includes a plurality of air supply nozzles 100, an air supply unit 200, and a water supply unit 300.

[0013] The radiant air-conditioning system 1 is a system that plays a role in enhancing the thermal environment of the living space (the air-conditioned space 2) by a combination of air flow, heat exchange, and thermal radiation. That is, the radiant air-conditioning system 1 is a system that plays a role in improving the thermal comfort of the living space.

[0014] The radiant air conditioning system 1 is installed within the air-conditioned space 2, which is part of the house. Here, the air-conditioned space 2 is a closed space composed of walls, including the ceiling, floor, and side walls. Furthermore, the air-conditioned space 2 refers to the space used by the residents as a place to live, and includes living rooms, dining rooms, bedrooms, private rooms, or children's rooms. Spaces where residents do not engage in activities, such as closets, wardrobes, or machine rooms, are not included.

[0015] In Figure 1, the side wall and ceiling on the near side of the drawing are shown transparently to make the arrangement of the radiant air conditioning system 1 installed in the air-conditioned space 2 easier to see.

[0016] Multiple air blower nozzles 100 are devices that blow a uniform, planar airflow at a low air velocity from the air blowing surface S1 (see Figure 6) into the air-conditioned space 2. In this embodiment, they are positioned near the ceiling surface of the air-conditioned space 2 and blow a uniform, planar airflow at a low air velocity from the ceiling surface to the floor surface of the air-conditioned space 2.

[0017] The blower nozzle 100a is a substantially rectangular parallelepiped member having an elongated slit-shaped outlet 130a (see Figure 2). In this embodiment, blower nozzle 100a and blower nozzles 100b, 100c, and 100d have equivalent components, so here we refer to blower nozzle 10 Let's explain using 0a as an example.

[0018] The air blower nozzle 100a is installed so as to penetrate the -y side wall and the +y side wall of the air-conditioned space 2, such that the two smallest surfaces of the six surfaces are located outside the air-conditioned space 2.

[0019] One of the two smallest surfaces out of the six is ​​connected to the blower chamber 240.

[0020] The air blower nozzle 100a and the air blower chamber 240 are in communication with each other via a hole (ventilation opening 120) through which air passes.

[0021] The four surfaces, excluding the two surfaces with the smallest cross-sectional area, are positioned with a space between them and the walls of the air-conditioned space 2 (ceiling, floor, -x side wall, +x side wall), except for the side wall through which the air blower nozzle 100a penetrates.

[0022] The multiple air blower nozzles 100 are not in contact with each other and are installed in a manner that allows the air occupying the conditioned space 2 to pass around the air blower nozzles 100a. In this embodiment, the space through which the air around the multiple air blower nozzles 100 passes is defined as the induction space 3.

[0023] As shown in Figure 6, the multiple air blower nozzles 100 are arranged in parallel to each other, such that the air outlets 130 are located on the same plane (air blower surface S1) which is substantially parallel to the ceiling surface.

[0024] A predetermined gap (for example, 20 cm) is provided between the air blower nozzle 100a and the air blower nozzle 100b. This ensures sufficient induction space 3 between the air blower nozzle 100a and the air blower nozzle 100b while enabling the generation of airflow in a wide-ranging direction (-z direction).

[0025] The air blower nozzles 100b, 100c, and 100d may be arranged side by side with the same predetermined interval (for example, 20 cm) between them.

[0026] The blower nozzle 100a is made of a material that conducts heat easily, such as aluminum, and the air circulating inside the hollow interior (discharged air Q0, described later) and the air passing through the gaps (induced air Q1, described later) can easily exchange heat with the hot and cold water via the main body 110 of the blower nozzle.

[0027] The detailed structure of the air blower nozzle 100a will be described later with reference to Figures 2 and 3.

[0028] The air blower unit 200 includes a blower 220, a return air duct 210, a supply air duct 230, an air blower chamber 240, and a return air port 250. The air blower unit 200 may be located outside the air-conditioned space 2.

[0029] The air blower unit 200 is connected in the following order: return air port 250, return air duct 210, blower 220, supply air duct 230, and air blower chamber 240. Furthermore, the return air port 250 is connected to the air-conditioned space 2, and the air blower chamber 240 is connected to multiple air blower nozzles 100.

[0030] The blower 220 is a device for blowing air from the air-conditioned space 2 to the blower nozzle 100.

[0031] The blower 220 is a pressure machine comprising a casing, an impeller, and a motor that drives the impeller. Since it is a common configuration, a detailed explanation will be omitted.

[0032] The return air duct 210 is a pipe that connects the air-conditioned space 2 and the blower 220. The return air duct 210 is positioned so that its upstream end is connected to the air-conditioned space 2 and its downstream end is connected to the intake port of the blower 220.

[0033] The air supply duct 230 is a pipe that connects the blower 220 and the blower chamber 240. The upstream end of the air supply duct 230 is connected to the outlet of the blower 220, and the downstream end is connected to the blower chamber 240.

[0034] The blower chamber 240 is a space for temporarily storing the air blown from the blower 220, and is a housing for uniformly distributing the air blown from the blower 220 to multiple blower nozzles 100.

[0035] The air blower chamber 240 is penetrated by the water supply pipe 320 and the drain pipe 330. The air blower chamber 240 also serves as a housing for the water supply pipe 320 and the drain pipe 330. The air blower chamber 240 has multiple air blower nozzles 100 connected to one side and an air supply duct 230 connected to another side.

[0036] The return air inlet 250 is an opening provided in the ceiling of the air-conditioned space 2 so as to connect the air-conditioned space 2 with the return air duct 210.

[0037] The water supply unit 300 includes a chiller 310 for generating hot and cold water, a water supply pipe 320, a drain pipe 330, and a connecting pipe 340 (shown in Figure 4). The water supply unit 300 is located outside the air-conditioned space 2. The water supply unit 300 is connected in the following order: drain pipe 330, chiller 310, and water supply pipe 320.

[0038] The water supply pipe 320 and the drain pipe 330 each pass through the side of the air blower chamber 240 and are arranged to connect to multiple air blower nozzles 100 inside the air blower chamber 240. The connecting pipe 340 and the piping inside the air blower chamber 240 will be described later with reference to Figure 4.

[0039] The chilled / hot water generating chiller 310 is a device for generating and circulating water for air conditioning and heat radiation in the air-conditioned space 2. The chilled / hot water generating chiller 310 is a device that has a water supply pump for supplying chilled / hot water, a tank for storing water for heating and cooling, a heat pump for heating and cooling the water, and a mechanism for controlling the water temperature. Since it is a general configuration, a detailed explanation will be omitted.

[0040] The water supply pipe 320 is a pipe for supplying the chilled water generated by the chilled water generating chiller 310 to the blower nozzle 100. The upstream end of the water supply pipe 320 is connected to the chilled water generating chiller 310, the middle section passes through the side of the blower chamber 240, and the downstream end is connected to the blower nozzle 100a.

[0041] The drain pipe 330 is a pipe for returning the chilled / hot water, which has undergone heat exchange by passing through the blower nozzle 100, to the chilled / hot water generating chiller 310. The drain pipe 330 is connected to the blower nozzle 100d at its upstream end, passes through the side of the blower chamber 240 in its middle section, and is connected to the chilled / hot water generating chiller 310 at its downstream end.

[0042] Next, the detailed structure of the air blower nozzle 100 will be described with reference to Figures 2 and 3.

[0043] The blower nozzle 100 is a substantially rectangular parallelepiped member having an elongated slit-shaped outlet 130. In this embodiment, blower nozzles 100a, 100b, 100c, and 100d have equivalent components, so here we will describe blower nozzle 100a as an example.

[0044] The blower nozzle 100 has a main body 110, a ventilation opening 120, an outlet 130, an air passage 140, and a refrigerant path section 150.

[0045] The main body 110 has a first face 111, a second face 112, a third face 113, a fourth face 114, an outlet face 115, and an opposite face 116. The main body 110 may also be a rectangular parallelepiped having these six faces.

[0046] The first face 111 and the fourth face 114 are perpendicular to the y-axis, with the fourth face 114 positioned on the +y side of the first face 111.

[0047] The second face 112 and the third face 113 are perpendicular to the x-axis, with the third face 113 positioned further to the +x direction than the second face 112.

[0048] The outlet surface 115 and the opposite surface 116 are perpendicular to the z-axis, with the opposite surface 116 positioned on the +z side of the outlet surface 115.

[0049] The area ratio of each face is "second face 112 and / or third face 113 > outlet face 115 and / or opposite face 116 > first face 111 and / or fourth face 114", forming an elongated rectangular parallelepiped in the y-axis direction.

[0050] The first surface 111 is connected to the blower chamber 240.

[0051] The ventilation opening 120 is an opening on the first surface 111 and is provided to connect the air blower chamber 240 and the air passage 140.

[0052] The air outlet 130 is a long, narrow slit-shaped opening provided on the air outlet surface 115, and is provided to connect the air passage 140 with the air-conditioned space 2. The air outlet 130 has a long, narrow shape, being smaller than the main body width 170 in the x direction and having the same length as the air outlet surface 115 in the y direction.

[0053] The refrigerant path section 150 is a waterway through which the chilled water produced by the chilled water generating chiller 310 flows. The refrigerant path section 150 has a forward path section 151 and a return path section 152.

[0054] The forward passage portion 151 is formed to contact the inside of the second surface 112. The forward passage portion 151 is positioned with a space between the discharge surface 115 and the opposite surface 116.

[0055] The return section 152 is formed to contact the inside of the third surface 113. The return section 152 is positioned with a space between the discharge surface 115 and the opposite surface 116.

[0056] The air passage 140 is a space formed within the main body, and is the space between the ventilation opening 120 and the air outlet 130. The air passage 140 is elongated in the y direction and has a constant cross-sectional shape in the xz plane. The air passage 140 has a first air passage 141, a second air passage 142, and a third air passage 143.

[0057] The first air passage 141 is formed in the +z direction more than the refrigerant path section 150 (forward path section 151 and / or return path section 152).

[0058] The second air passage 142 is formed in the xy plane where the refrigerant path section 150 exists. The second air passage width 172 of the second air passage 142 is smaller than the first air passage width 171 of the first air passage 141.

[0059] The third air passage 143 is located in the -z direction from the refrigerant path section 150 and is formed between the second air passage 142 and the outlet 130. The maximum width 173 of the third air passage 143 is the width of the second air passage 142. The second airflow width is greater than 172. Furthermore, the third airflow width 173 is shaped to gradually narrow in the -z direction to match the outlet width 175.

[0060] Next, with reference to Figure 3, the detailed dimensional relationships of the air blower nozzle 100 will be explained.

[0061] The distance between the outlet surface 115 and the opposite surface 116 is set to the main body height of 160.

[0062] In the z-direction of the air passage 140, the maximum air passage height H represents the distance between the point on the +z-side of the first air passage 141 and the outlet 130. The maximum air passage height H does not include the thickness of the opposite side 116 of the main body 110. In other words, "maximum air passage height H < main body height 160".

[0063] The maximum airflow width W represents the longest distance in the x-direction within the airflow 140. In other words, the maximum airflow width W is equal to the longer of the two airflow widths, the first airflow width 171 and the third airflow width 173. To put it another way, if one of the first airflow widths 171 and the third airflow width 173 is longer, the maximum airflow width W is equal to the longer length. If the lengths of the first airflow width 171 and the third airflow width 173 are the same, the maximum airflow width W is equal to the distance between the first airflow width 171 and the third airflow width 173. Since the maximum airflow width W does not include the thickness of the main body 110, "maximum airflow width W < main body width 170".

[0064] Within the forward passage section 151 through which the refrigerant flows, the forward passage section 151, which is the refrigerant path section 150, has a forward contact section 181 (path contact section 180) in the portion that contacts the second surface 112. The forward contact section height ha (path contact section height h) represents the length of the forward contact section 181 (path contact section 180) in the z direction. Furthermore, within the forward passage section 151, which is the refrigerant path section 150, the maximum width inside the forward passage wa (maximum width inside the path w) represents the maximum length in the x direction.

[0065] Within the return path section 152 through which the refrigerant flows, the return path section 152, which is the refrigerant path section 150, has a return path contact section 182 (path contact section 180) in the portion that contacts the third surface 113. The height hb (path contact section height h) of the return path contact section represents the length of the return path contact section 182 (path contact section 180) in the z direction. Also, within the return path section 152, which is the refrigerant path section 150, the maximum width wb (maximum width w inside the path) represents the maximum length in the x direction.

[0066] The aspect ratio inside the air passage 140 is expressed as H / W. The aspect ratio of the refrigerant path section 150 is expressed as H / W. The aspect ratio of the forward path section 151 is expressed as ha / wa. The aspect ratio of the return path section 152 is expressed as hb / wb. In this case, the aspect ratio h / w inside the refrigerant path section 150 is set to be greater than the aspect ratio H / W inside the air passage 140. That is, "(h / w)>(H / W)". Similarly, in the forward path section 151 and the return path section 152, their respective aspect ratios ha / wa and hb / wb are set to be greater than the aspect ratio H / W inside the air passage 140. That is, "(ha / wa)>(H / W)" and "(hb / wb)>(H / W)".

[0067] Next, referring to Figure 4, the details of the connections of the connecting pipe 340 and the water supply pipe 320, drain pipe 330, and multiple air blower nozzles 100 within the air blower chamber 240 will be explained. In Figure 4, air blower nozzles 100b and 100c are omitted to make the airflow and chilled / hot water piping configuration of the radiant air conditioning system 1 easier to see.

[0068] The connecting pipe 340 has multiple path connecting pipes 341 and multiple nozzle connecting pipes 342.

[0069] The path connecting pipe 341 is a pipe that connects the forward path 151 and the return path 152 on the fourth surface 114 of the air blower nozzle 100.

[0070] The nozzle connecting pipe 342 is connected to the end on the first surface 111 side of the return path section 152 of the blower nozzle 100, This is a pipe that connects the end of the forward passage section 151 of another air blower nozzle 100, on the first surface 111 side.

[0071] The water supply pipe 320 has its upstream end connected to the chiller 310 for generating hot and cold water outside the blower chamber 240, its middle section is positioned to penetrate the side of the blower chamber 240, and its downstream end is connected to the supply section 151 on the first surface 111 of the blower nozzle 100 inside the blower chamber 240.

[0072] The drain pipe 330 has its upstream end connected to the return section 152 of another air blower nozzle 100 on the first surface 111 of the air blower nozzle 100 inside the air blower chamber 240, its middle section is positioned to penetrate the side of the air blower chamber 240, and its downstream end is connected to the chiller 310 for generating hot and cold water outside the air blower chamber 240.

[0073] Next, we will explain the operation of the radiant air conditioning system 1. We will describe the airflow, chilled / heated water flow, and heat transfer in the radiant air conditioning system 1.

[0074] The airflow in the radiant air conditioning system 1 will be explained with reference to Figures 4, 5, and 6.

[0075] In the air supply unit 200, the air from the conditioned space 2 is drawn in through the return air port 250 by the action of the blower 220, and the return air A1 is drawn into the blower 220 through the return air duct 210.

[0076] The air blown out from the blower 220 flows through the air supply duct 230 into the blower chamber 240. The air blown into the blower chamber 240 is temporarily stored in the blower chamber 240 and then distributed to multiple blower nozzles 100 by being pushed in from the blower 220.

[0077] Multiple air nozzles 100a, 100b, 100c, and 100d are supplied with nozzle air A2a, A2b (not shown), A2c (not shown), and A2d, respectively. Although the relationship between their respective airflow rates is not strictly defined, it is desirable that the airflow rate of nozzle air A2a = airflow rate of nozzle air A2b = airflow rate of nozzle air A2c = airflow rate of nozzle air A2d. Then, the nozzle airs A2a, A2b, A2c, and A2d flow in the y-direction through the air passage 140 within the air nozzle 100, and gradually flow out as discharged air Q0 in the -z direction from the outlets 130a, 130b, 130c, and 130d.

[0078] Although not shown in Figures 4 and 5, in order to keep the amount of air flowing out of the outlet 130 constant regardless of the length of the air blower nozzle 100, rectifying fins or the like may be provided inside the air blower nozzle 100.

[0079] As shown in Figure 6, the air blown through the multiple air blower nozzles 100 is released into the air-conditioned space 2 as discharged air Q0 from the outlets 130. Here, as described above, the multiple air blower nozzles 100 each release approximately the same amount of air from the outlets 130, so the discharged air Q0 has a velocity distribution that is not biased in the parallel direction of the air blower nozzles 100, and has peaks at intervals between the outlets 130. Because this discharged air Q0 has a relatively large velocity relative to its air volume due to the use of the slit-shaped outlets 130, it generates an airflow with high directivity in the direction of discharge. Furthermore, when the discharged air Q0 is blown out, the air in the space surrounding the discharged air Q0 is drawn towards it, and a negative pressure region is created in the space between adjacent air blower nozzles 100. Negative pressure (also called negative pressure) refers to a state in which the atmospheric pressure is lower than the surroundings. A force acts to eliminate the negative pressure, generating air (induced air Q1) that flows from the space around the blower nozzle 100 into the negative pressure region. The induced air Q1 eliminates the negative pressure between adjacent discharge air Q0s and suppresses the force that would cause the discharge air Q0s to be attracted to each other and merge. Discharge air Q0 and induced air As Q1 flows together, a uniform, planar flow is generated over a wide area in the xy-plane. In this way, a uniform, planar flow with a low airflow velocity is delivered from the air supply surface S1 to the air-conditioned space 2.

[0080] Referring to Figure 4, the water flow in the radiant air conditioning system 1 will be explained.

[0081] Water (refrigerant) introduced into the chilled water generating chiller 310 is heated or cooled within the chilled water generating chiller 310. For heating or cooling, a heat pump system using a refrigerant is used, for example. The heated or cooled chilled or hot water is temporarily stored in a tank built into the chilled water generating chiller 310, and then a water supply pump is driven to send it to the water supply pipe 320 at a desired flow rate. After that, the chilled or hot water supplied to the water supply pipe 320 is sent to the blower nozzle 100a. The chilled or hot water sent to the blower nozzle 100a is sent in the following order: forward section 151 → path connecting pipe 341 → return section 152 → nozzle connecting pipe 342, and then sent to the blower nozzle 100b. The flow of chilled and hot water in the air blower nozzles 100b, 100c, and 100d is the same as in air blower nozzle 100a: forward path 151 → path connecting pipe 341 → return path 152 → nozzle connecting pipe 342 or drain pipe 330. Thus, the chilled and hot water flows in the order of air blower nozzle 100a, air blower nozzles 100b, 100c, and 100d. The water recovered from air blower nozzle 100d to the drain pipe 330 is sequentially sent to the chilled and hot water generating chiller 310 and reused as a heat source.

[0082] In this way, the water in the radiant air conditioning system 1 is repeatedly used as a heat source, and the system can be completed with only a small amount of water. However, if there are concerns about deterioration of the water quality flowing inside due to scale buildup in the piping, it is preferable to ensure redundancy by setting up a purification filter or an alternative route connected to the water supply, and to purify or replace the water.

[0083] The air conditioning function of the radiant air conditioning system 1 will be explained using its use during the cooling season as an example.

[0084] In the radiant air conditioning system 1, water flowing into the chilled water generating chiller 310 at 25°C is cooled to 18°C ​​and sent to the water supply pipe 320. The chilled water flowing through the water supply pipe 320 is gradually warmed by heat exchange with the air-conditioned space 2 as it passes through the air blower nozzles 100a, 100b, 100c, and 100d. The water, which has reached 25°C by the time it is collected in the drain pipe 330 from the air blower nozzle 100d, is sent back to the chilled water generating chiller 310 and cooled to 18°C, and this cycle is repeated.

[0085] Meanwhile, a portion of the air in the conditioned space 2 flows into the blower unit 200 from the return air inlet 250 at 27°C, exchanges heat with the chilled water flowing through the refrigerant path 150 as it passes through the air passage of the blower nozzle 100, cools to 24°C, and is blown out into the conditioned space 2 from the outlet 130. The air in the induced space 3, as induced air Q1, exchanges heat with the blower nozzles 100 which have been cooled to 19°C as it flows between the multiple blower nozzles 100, cools to 26°C, and then mixes with the blown air Q0 to flow through the conditioned space 2 as an airflow with a nearly uniform temperature distribution. The cooled air is warmed by the heat load in the conditioned space 2 (ventilation with the outside air, solar radiation, heat storage in the walls, etc.), and 27°C air flows back into the blower unit 200. By repeating the above cycle, the radiant air conditioning system 1 air conditions the conditioned space 2.

[0086] Next, we will explain the heat transfer in the air nozzle 100a in more detail.

[0087] Since the heat transfer in the air blower nozzles 100b, 100c, and 100d is equivalent, we will explain using air blower nozzle 100a as an example. Inside air blower nozzle 100a, the chilled water (refrigerant) flowing through the refrigerant path 150 and the air flowing through the air passage 140 exchange heat through convection. In addition, the air blower nozzle 100a itself is cooled by heat conduction with the chilled water inside the air blower nozzle 100a body. This is done. Outside the blower nozzle 100a, the cooled blower nozzle 100a and the induced air Q1 flowing around it exchange heat through convection, cooling the air in the conditioned space 2. The cooled blower nozzle 100 also exchanges heat through radiation with objects with temperature differences, such as the walls and occupants of the conditioned space 2. This reduces the heat load on the cooling system from the walls and occupants, making it easier to cool the air in the conditioned space 2.

[0088] The above explains the air conditioning effect of the radiant air conditioning system 1 on the air-conditioned space 2.

[0089] It should be noted that the temperature changes shown here are merely examples and may not apply, for example, during use in the heating season. Furthermore, if the temperature of the chilled or hot water passing through the water supply pipe 320 can easily change due to the external environment, and there are concerns about insufficient capacity as a heat source, it is preferable to take measures such as using a highly insulating material for the water supply pipe 320.

[0090] According to the radiant air conditioning system 1, "(h / w) > (H / W)", so compared to a configuration where "(h / w) ≤ (H / W)", the heat from the refrigerant is more easily transferred to the main unit 110. Therefore, convective heat transfer around the main unit 110 is promoted.

[0091] As a result, the air-conditioned space 2 can be efficiently air-conditioned, thereby improving thermal comfort.

[0092] (modified version) The following describes modified examples. In the modified examples, components similar to those in each embodiment are denoted by the same reference numerals, and their detailed descriptions are omitted.

[0093] Referring to Figure 7, a modified example of the cross-sectional shape of the air blower nozzle 100 will be described. The refrigerant path section 150 of the air blower nozzle 100 may be composed of multiple forward and / or return sections.

[0094] Figure 7 shows Modification 1. In Modification 1, the forward path section 151 consists of a first forward path section 151i and a second forward path section 151j, and the return path section 152 consists of a first return path section 152i and a second return path section 152j. The first forward path section 151i is positioned on the +z side of the second forward path section 151j. Similarly, the first return path section 152i is positioned on the +z side of the second return path section 152j.

[0095] The first forward contact portion 181i represents the portion that contacts the second surface 112 inside the first forward contact portion 151i. The height ha1 of the first forward contact portion represents the length of the first forward contact portion 181i in the z direction. The maximum width wa1 inside the first forward path represents the maximum length in the x direction within the first forward path portion 151i.

[0096] The second forward contact portion 181j represents the portion that contacts the second surface 112 within the second forward contact portion 151j. The height ha2 of the second forward contact portion represents the length of the second forward contact portion 181j in the z direction. The maximum width wa2 inside the second forward path represents the maximum length in the x direction within the second forward path portion 151j.

[0097] If the maximum internal width wa of the forward path is the larger of the maximum internal width wa1 of the first forward path and the maximum internal width wa2 of the second forward path, and the forward path contact height ha is the sum of the first forward path contact height ha1 and the second forward path contact height ha2, then "(ha / wa)>(H / W)". The same consideration can be applied when the forward path section 151 is divided into three or more sections. That is, the maximum internal width wa of the forward path can be considered as the largest internal width among the divided forward path sections, and the forward path contact height ha can be considered as the sum of the contact heights of the divided forward path sections.

[0098] The first return path contact portion 182i is the portion that contacts the third surface 113 inside the first return path portion 152i. The height hb1 of the first return path contact portion represents the length of the first return path contact portion 182i in the z direction. The maximum width wb1 inside the first return path represents the maximum length in the x direction within the first return path portion 152i.

[0099] The second return path contact portion 182j represents the portion within the second return path portion 152j that contacts the third surface 113. The height hb2 of the second return path contact portion represents the length of the second return path contact portion 182j in the z direction. The maximum width wb2 inside the second return path represents the maximum length in the x direction within the second return path portion 152j.

[0100] If the maximum internal width wb of the return path is the larger of the first maximum internal width wb1 and the second maximum internal width wb2, and the height hb of the return path contact area is the sum of the first contact area height hb1 and the second contact area height hb2, then "(hb / wb)>(H / W)". The same consideration can be applied when the return path section 152 is divided into three or more parts. That is, the maximum internal width wb of the return path can be considered as the largest internal width among the multiple divided return path sections, and the height hb of the return path contact area can be considered as the sum of the contact area heights of the multiple divided return path sections.

[0101] (supplement) The following provides further details regarding each embodiment.

[0102] The components constituting the air blowing unit 200 do not necessarily have to be configured as described above; they only need to include at least one blower 220 and an air passage connecting the blower 220 and the air blowing nozzle 100.

[0103] Furthermore, the air blower unit 200 and / or water blower unit 300 may be placed inside the air-conditioned space 2, and their placement in any location that does not obstruct the living space will not affect the operation and effects of the present invention.

[0104] Furthermore, although the air blower nozzle 100 is positioned to penetrate the side wall surface of the air-conditioned space 2, one end and / or the other end may be positioned inside the air-conditioned space 2.

[0105] Furthermore, although the multiple air blowing nozzles 100 are described as being arranged so that the air blowing surface S1 is parallel to the xy plane, they may also be arranged around the side wall surface of the air-conditioned space 2 so that the air blowing surface S1 is parallel to the xz plane.

[0106] Furthermore, the air blower nozzle 100 may be made of materials such as sheet metal or resin to reduce manufacturing costs and weight.

[0107] Furthermore, the main body 110 and the refrigerant passage section 150 of the blower nozzle 100 do not have to be made of the same material. For example, the main body 110 may be made of metal, and the refrigerant passage section 150 may be made of resin, and the refrigerant passage section 150 may be bonded to the inside of the second surface 112 and / or the third surface 113 of the main body 110 with adhesive.

[0108] Alternatively, the third air passage 143 can be omitted. In this case, the second air passage 142 and the outlet 130 will be directly connected.

[0109] Furthermore, the forward section 151 and the return section 152 do not necessarily have to be connected in series; they can also be connected in parallel. In this case, the portion corresponding to the return section 152 can be considered as a second forward section.

[0110] Furthermore, the air outlet 130 has an elongated shape from the first surface 111 to the fourth surface 114. It is slit-shaped. Therefore, the outlet 130 is not necessarily in contact with the first surface 111 and / or the fourth surface 114. Also, the outlet 130 may be discontinuous slit-shaped.

[0111] Also, h=45~100mm (or 25~450mm), w=5~15mm (or 2~150mm), H=150~180mm (or 50~500mm), W=40~60mm (or 20~200mm). For example, if h=90mm, w=10mm, H=160mm, W=55mm, then "(h / w)=9>(H / W)≈2.9", and "h=90>(1 / 2)×H=80".

[0112] Alternatively, the thickness of the main body 110 may be 0.8 to 3 mm, and the width of the main body 170 may be W + (thickness of the main body 110) × 2. The thickness of the refrigerant path section 150 may also be 0.8 to 3 mm.

[0113] Also, ha = 45 to 100 mm (or 25 to 450 mm) and wa = 5 to 15 mm (or 2 to 150 mm) are acceptable. For example, if ha = 45 mm, wa = 10 mm, H = 160 mm, and W = 55 mm, then (ha / wa) = 4.5 > (H / W) ≈ 2.9.

[0114] hb = 45-100 mm (or 25-450 mm), wb = 5-15 mm (or 2-150 mm). For example, if hb = 45 mm, wb = 10 mm, H = 160 mm, W = 55 mm, then (hb / wb) = 4.5 > (H / W) ≈ 2.9.

[0115] Furthermore, the numerical ranges for h, ha, hb, w, wa, wb, H, W, etc., are not limited to the above ranges, but may also be other numerical ranges that satisfy each formula ("(h / w)>(H / W)", "h>(1 / 2)×H", "(ha / wa)>(H / W)", or "(hb / wb)>(H / W)").

[0116] Each of the faces, such as the first face 111, the second face 112, the third face 113, the fourth face 114, the outlet face 115, and the opposite face 116, does not need to be a plane; it may be a curved surface or a polygonal surface. These faces do not necessarily need to be connected to each other at a 90° angle; in some cases, they may be connected to each other at a 0° angle. In this case, the two connected faces may appear as one face, but there are still two faces as described in this disclosure. For example, if each face is a curved surface, each face may be connected to each other at a 0° angle.

[0117] Furthermore, although the xy-plane was defined as the horizontal plane in this embodiment, the xz-plane or yz-plane may also be defined as the horizontal plane. The xy-plane, xz-plane, or yz-plane may also be defined as a plane oblique to the horizontal plane.

[0118] Furthermore, terms indicating relationships between elements such as parallel and perpendicular, terms indicating the shapes of elements such as rectangular prisms and tubular shapes, and numerical ranges do not represent only strict meanings, but also include substantially equivalent ranges, such as differences of a few percent.

[0119] Next, we will explain the effects of this disclosure.

[0120] In a configuration where "(h / w) > (H / W)", the heat from the refrigerant is more easily transferred to the main unit 110. This promotes convective heat transfer around the main unit 110.

[0121] The following items are independent of the claims. While they may be described in detail, these are merely examples and do not restrict the scope of the claims.

[0122] (Item 1) A blower nozzle 100 having a main body 110, a ventilation opening 120, an outlet 130, an air passage 140, and a refrigerant path section 150, The main body 110 has a first surface 111, a second surface 112, a third surface 113, a fourth surface 114, an outlet surface 115, and an opposite surface 116. The first surface 111 has a ventilation opening 120, The ventilation opening 120 is an opening through which air from the blower 220 passes. The second surface 112 is connected to the first surface 111. Page 3, 113 is opposite to Page 2, 112. Page 4, 114 is opposite to Page 1, 111. The discharge surface 115 is connected to the first surface 111, the second surface 112, the third surface 113, and the fourth surface 114, and has an outlet 130. The opposite side 116 faces the discharge side 115, The air outlet 130 is slit-shaped, with an elongated shape extending from the first surface 111 to the fourth surface 114. The air passage 140 is formed inside the main body 110. The refrigerant path section 150 is formed inside the main body 110, on the inside of the second surface 112 or the third surface 113. By passing the refrigerant through the refrigerant path section 150, heat radiation is generated in the air-conditioned space 2. The air blown by the blower 220 through the ventilation opening 120 passes through the air passage 140 and is then blown out from the outlet 130. The direction from face 2, section 112 to face 3, section 113 is defined as the +x direction. The direction from face 111 to face 414 is defined as the +y direction. The direction from the outlet surface 115 toward the opposite surface 116 is defined as the +z direction. Let H be the maximum length of the wind passage 140 in the z direction. The maximum length of the airflow path 140 in the x-direction is defined as the maximum width of the airflow path W. The portion where the refrigerant flowing inside the refrigerant path section 150 comes into contact with the second surface 112 or the third surface 113 is defined as the path contact section 180. The length of the path contact portion 180 in the z direction is defined as the path contact portion height h. If the maximum length in the x-direction inside the refrigerant path section 150 is defined as the maximum width w inside the path, It is also acceptable to have a configuration where "(h / w) > (H / W)".

[0123] With this configuration, the heat from the refrigerant is more easily transferred to the main body 110 compared to a configuration where "(h / w) ≤ (H / W)". As a result, convective heat transfer around the main body 110 is promoted.

[0124] As a result, the air-conditioned space 2 can be efficiently air-conditioned, thereby improving thermal comfort.

[0125] (Item 2) Alternatively, the structure could be such that "h > (1 / 2) × H".

[0126] With this configuration, the path contact height h is larger compared to a configuration where "h ≤ (1 / 2) × H", making it easier for the heat of the refrigerant to be transferred to the main body 110. As a result, convective heat transfer around the main body 110 is promoted.

[0127] As a result, the air-conditioned space 2 can be air-conditioned more efficiently, thereby improving thermal comfort.

[0128] (Item 3) The refrigerant path section 150 includes a forward path section 151 and a return path section 152. The forward section 151 is formed on the inside of the second surface 112, Inside the forward section 151, the refrigerant flows in the +y direction. The return section 152 is formed on the inside of the third surface 113. Inside the return section 152, the refrigerant flows in the -y direction. The portion where the refrigerant flowing inside the forward section 151 comes into contact with the second surface 112 is designated as the forward contact section 181. The length of the forward contact portion 181 in the z direction is defined as the forward contact portion height ha. The maximum length in the x-direction inside the forward path section 151 is defined as the maximum width wa inside the forward path. The portion where the refrigerant flowing inside the return path section 152 comes into contact with the third surface 113 is designated as the return path contact section 182. The length of the return contact portion 182 in the z direction is defined as the return contact portion height hb. If the maximum length in the x-direction inside the return section 152 is defined as the maximum width wb inside the return section, It is also possible to have a configuration where "(ha / wa)>(H / W)" and "(hb / wb)>(H / W)".

[0129] With this configuration, the contact area between the refrigerant path section 150 and the main body 110 can be increased compared to configurations where "(ha / wa) ≤ (H / W)" or "(hb / wb) ≤ (H / W)", making it easier for the heat of the refrigerant to be transferred to the main body 110. As a result, convective heat transfer around the main body 110 is promoted.

[0130] As a result, the air-conditioned space 2 can be air-conditioned more efficiently.

[0131] (Item 4) The refrigerant path section 150 includes a first supply section 151i and a second supply section 151j. The first forward section 151i and the second forward section 151j are formed on the inside of the second surface 112. Inside the first forward section 151i and the second forward section 151j, the refrigerant flows in the +y direction. The portion where the refrigerant flowing inside the first forward section 151i comes into contact with the second surface 112 is defined as the first forward contact section 181i. The portion where the refrigerant flowing inside the second forward section 151j comes into contact with the second surface 112 is defined as the second forward contact section 181j. The length of the first forward contact portion 181i in the z direction is defined as the height of the first forward contact portion ha1. The length of the second forward contact portion 181j in the z direction is defined as the height of the second forward contact portion ha2. The maximum length in the x-direction inside the first forward passage section 151i is defined as the maximum width wa1 inside the first forward passage. The maximum length in the x-direction inside the second forward section 151j is defined as the maximum width wa2 inside the second forward section. Let the maximum internal width wa of the outward journey be the larger of wa1 and wa2. If the height ha of the contact point on the forward path is the sum of ha1 and ha2, It is also possible to construct it such that "(ha / wa)>(H / W)".

[0132] With this configuration, the heat from the refrigerant is more easily transferred to the main body 110 compared to a configuration where "(ha / wa) ≤ (H / W)". As a result, convective heat transfer around the main body 110 is promoted.

[0133] As a result, the air-conditioned space 2 can be air-conditioned more efficiently.

[0134] (Item 5) The system may also be configured as a radiant air conditioning system 1 comprising a blower nozzle 100 and a blower 220.

[0135] This configuration promotes convective heat transfer by the induced air Q1 flowing through the induced space 3 surrounding the air blower nozzle 100. As a result, the air-conditioned space 2 can be air-conditioned more efficiently.

[0136] The air blower nozzle 100 or radiant air conditioning system 1 relating to this disclosure has been described above based on examples, but this disclosure is not limited to these examples. Within the scope of this disclosure, various modifications to each example that a person skilled in the art could conceive, as long as they do not depart from the spirit of this disclosure, and configurations constructed by combining components from different examples, are also included. [Explanation of Symbols]

[0137] 1. Radiant Air Conditioning System 2 Conditioned space 3. Attraction Space 100, 100a, 100b, 100c, 100d Air nozzles 110 Main Unit 111 Page 1 112 Side 2 113 3rd page 114 Page 4 115 Blowout surface 116 Opposite side 120 Ventilation opening 130, 130a, 130b, 130c, 130d outlet 140 Wind path 141 1st wind path 142 2nd wind path 143 Third wind path 150 Refrigerant path section 151 Outbound journey 151i First Outbound Leg 151j Second Outbound Leg 152 Return journey 152i First Return Leg 152j Second Return Leg 160 Main body height 170 Body width 171 1st air passage width 172 2nd air passage width 173 Third air passage width 175 Outlet width 180 Path contact area 181 Forward contact section 181i First forward contact section 181j Second outbound contact point 182 Return path contact section 182i First return path contact section 182j Second return contact point 200 Air blower 210 Return air duct 220 Blower 230 Air intake duct 240 Blower Chamber 250 Return air port 300 Water supply section 310 Chiller for generating hot and cold water 320 Water supply pipe 330 Drain pipe 340 Connecting pipe 341 Route connecting pipe 342 Nozzle connecting pipe A1 Return air A2a Nozzle Air A2d nozzle air Q0 Outlet air Q1 Induced air S1 Airflow surface H Airflow Maximum Height h Height of the contact area on the path ha Forward contact area height ha1 Height of the first forward contact point ha2 Height of the second forward contact point hb Return path contact height hb1 Height of the first return contact point hb2 Second return path contact point height W Maximum width of air passage w Maximum width inside the path wa Maximum width inside the outbound route wa1 Maximum width inside the first outbound leg wa2 Second outbound leg maximum width wb maximum internal width on return trip wb1 First return leg maximum width wb2 2nd return leg internal maximum width

Claims

1. A blower nozzle having a main body, a ventilation opening, an outlet, an air passage, and a refrigerant path section, The main body has a first surface, a second surface, a third surface, a fourth surface, an outlet surface, and an opposite surface. The first surface has the ventilation opening, The aforementioned ventilation opening is an opening through which air from a blower can pass. The second surface is connected to the first surface, The third surface is opposite the second surface, The fourth surface is opposite the first surface, The discharge surface is connected to the first surface, the second surface, the third surface, and the fourth surface, and has the outlet, The opposite surface faces the outlet surface, The aforementioned outlet is slit-shaped, with an elongated shape extending from the first surface to the fourth surface. The aforementioned air passage is formed inside the main body, The refrigerant path portion is formed inside the main body, on the inside of the second surface or the third surface. By passing the refrigerant through the refrigerant path, heat radiation is generated in the air-conditioned space. The air that has passed through the ventilation opening by the blower is then blown out from the outlet after passing through the air passage. The direction from the second surface to the third surface is defined as the +x direction. The direction from the first surface to the fourth surface is defined as the +y direction. The direction from the aforementioned outlet surface toward the opposite surface is defined as the +z direction. The maximum length of the wind passage in the z direction is defined as the maximum height of the wind passage H. The maximum length of the air passage in the x-direction is defined as the maximum width of the air passage W. The portion where the refrigerant flowing inside the refrigerant path comes into contact with the second surface or the third surface is defined as the path contact portion. The length of the path contact portion in the z direction is defined as the path contact portion height h. If the maximum length in the x-direction inside the refrigerant path is defined as the maximum width w inside the path, A blower nozzle where "(h / w) > (H / W)".

2. The blower nozzle according to claim 1, wherein "h > (1 / 2) × H".

3. The refrigerant path section includes a forward path section and a return path section, The forward path portion is formed on the inside of the second surface, Within the forward section, the refrigerant flows in the +y direction. The return path portion is formed on the inside of the third surface, Inside the return section, the refrigerant flows in the -y direction. The portion where the refrigerant flowing inside the forward section comes into contact with the second surface is defined as the forward contact portion. The length of the forward contact portion in the z direction is defined as the forward contact portion height ha. The maximum length in the x-direction inside the forward path section is defined as the maximum width wa inside the forward path. The portion where the refrigerant flowing inside the return section comes into contact with the third surface is defined as the return contact section. The length of the return contact portion in the z direction is defined as the return contact portion height hb. If the maximum length in the x-direction inside the return section is defined as the maximum width wb inside the return section, The blower nozzle according to claim 1, wherein "(ha / wa) > (H / W)" and "(hb / wb) > (H / W)".

4. The refrigerant path section includes a first supply path section and a second supply path section. The first forward section and the second forward section are formed on the inside of the second surface, Within the first forward section and the second forward section, the refrigerant flows in the +y direction. The portion where the refrigerant flowing inside the first forward section comes into contact with the second surface is defined as the first forward contact portion. The portion where the refrigerant flowing inside the second forward section comes into contact with the second surface is defined as the second forward contact portion. The length of the first forward contact portion in the z direction is defined as the height of the first forward contact portion ha1. The length of the second forward contact portion in the z direction is defined as the height of the second forward contact portion ha2. The maximum length in the x-direction inside the first forward passage is defined as the maximum width wa1 inside the first forward passage. The maximum length in the x-direction inside the second forward passage is defined as the maximum width wa2 inside the second forward passage. Let the maximum internal width wa of the outbound path be the larger of wa1 and wa2. If the forward contact height ha is the sum of ha1 and ha2, The blower nozzle according to claim 1, wherein "(ha / wa) > (H / W)".

5. A radiant air conditioning system comprising a blower nozzle according to any one of claims 1 to 4, and the blower.

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