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 suppresses the non-uniformity of the air discharged from the outlet. [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 refrigerant path section 150, heat radiation is generated in the air-conditioned space 2, and by the blower 220, the air that has passed through the ventilation opening 120 passes through the air passage 140 and is blown out from the outlet 130, the first air passage 141 is formed in the +z direction from the refrigerant path section 150, and the second air passage 142 is formed in the xy plane where the refrigerant path section 150 exists, and "first air passage width 171 > second air passage width 172".

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 large number of pipes through which a refrigerant such as cold and warm 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 almost no convective heat transfer occurs due to 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 temperature in the space approaches an appropriate temperature.

Means for Solving the Problems

[0007] And, in order to achieve this object, a blower nozzle according to one aspect of the present disclosure is a blower nozzle having a main body, a ventilation opening, a blowout port, 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 includes a first air passage and a second air passage, and 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. The length of the first air passage in the x-direction is defined as the width of the first air passage. If the length of the second airflow path in the x-direction is defined as the width of the second airflow path, The first air passage is formed in the +z direction from the refrigerant path section. The second air passage is formed in the xy plane where the refrigerant path exists. The first wind channel width is greater than the second wind channel width. [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 this embodiment 1. [Figure 2] Perspective view showing a blower nozzle in a radiant air conditioning system [Figure 3] Cross-sectional view showing the dimensional relationship of the blower 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 blown air from the blower nozzle and surrounding induced air in the radiant air conditioning system [Figure 7] Cross-sectional view showing Modification 1 of the blower nozzle [Figure 8] Cross-sectional view showing Modification 2 of the blower 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 blower 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 blower nozzles 100, a blower section 200, and a water supply section 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) through 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, since blower nozzles 100a, 100b, 100c, and 100d have equivalent components, blower nozzle 100a will be used as an example for explanation.

[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 10 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 ventilation chamber 240. The upstream end of the air supply duct 230 is connected to the outlet 130 of the blower 220, and the downstream end is connected to the ventilation 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 consists of a main body 110, a ventilation opening 120, an outlet 130, an air passage 140, and a refrigerant. It has a 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, a third air passage 143, and a fourth air passage 144.

[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 formed in the -z direction from the refrigerant path section 150. The third air passage width 173 of the third air passage 143 is greater than the second air passage width 172 of the second air passage 142.

[0060] The fourth air passage 144 is formed between the third air passage 143 and the outlet 130. The fourth air passage width 174 of the fourth air passage 144 is shaped to gradually narrow in the -z direction, starting from a length equivalent to the third air passage width 173 and matching the outlet width 175.

[0061] Next, with reference to Figure 3, the detailed dimensional relationships of the air blower nozzle 100 will be explained.

[0062] The distance between the outlet surface 115 and the opposite surface 116 is set to the main body height of 160.

[0063] On the second surface 112 side, the main body height 160 is divided into a first height 161, a path section height 163 (forward path height), and a second height 162. The first height 161 represents the distance between the opposite surface 116 and the refrigerant path section 150 (forward path 151). The path section height 163 represents the length of the refrigerant path section 150 (forward path 151) in the z direction. The second height 162 represents the distance between the outlet surface 115 and the refrigerant path section 150 (forward path 151). At this time, the air blower nozzle 100 may be formed such that "path section height 163 > half of the main body height 160" and "second height 162 > first height 161".

[0064] On the third surface 113 side, the main body height 160 is divided into a first height 161, a path section height 164 (return path section height), and a second height 162. The first height 161 represents the distance between the opposite surface 116 and the refrigerant path section 150 (return path section 152). The path section height 164 represents the length of the refrigerant path section 150 (return path section 152) in the z direction. The second height 162 represents the distance between the outlet surface 115 and the refrigerant path section 150 (return path section 152). At this time, the blower nozzle 100 may be formed such that "path section height 164 > half of the main body height 160" and "second height 162 > first height 161".

[0065] The lengths in the x-direction of the first air passage 141, the second air passage 142, the third air passage 143, and the fourth air passage 144 are defined as the first air passage width 171, the second air passage width 172, the third air passage width 173, and the fourth air passage width 174, respectively. The sum of the lengths in the x-direction of the forward passage section 151 and the return passage section 152 is defined as the total path width ("forward passage width 176 + return passage width 177"). In this case, the air blower nozzle 100 may be formed such that "first air passage width 171 > second air passage width 172", "third air passage width 173 > second air passage width 172", and "total path width > second air passage width 172". Here, the forward passage width 176 or the return passage width 177 includes not only the portion through which the refrigerant flows, but also the thick portion of the path wall inside the main body 110 (the path wall forming the second air passage 142). On the other hand, the width of the air passage 140 is defined as the width of the section through which the air flows. This applies not only to the width but also to the height of the refrigerant path section 150.

[0066] 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.

[0067] The connecting pipe 340 has multiple path connecting pipes 341 and multiple nozzle connecting pipes 342.

[0068] 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.

[0069] The nozzle connecting pipe 342 is a pipe that connects the end of the return section 152 of one air blower nozzle 100 on the first surface 111 side to the end of the forward section 151 of another air blower nozzle 100 on the first surface 111 side.

[0070] The water supply pipe 320 has its upstream end in contact with the chiller 310, which generates hot and cold water, outside the blower chamber 240. The intermediate section is positioned to penetrate the side of the blower chamber 240, and the downstream end is connected to the forward section 151 on the first surface 111 of the blower nozzle 100 inside the blower chamber 240.

[0071] 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.

[0072] 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.

[0073] The airflow in the radiant air conditioning system 1 will be explained with reference to Figures 4, 5, and 6.

[0074] 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.

[0075] 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.

[0076] 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.

[0077] 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.

[0078] 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 outlet air Q0s and suppresses the force that would cause the outlet air Q0s to be attracted to each other and merge. As the outlet air Q0s and induced air Q1 flow 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 blown from the blower surface S1 into the air-conditioned space 2.

[0079] Referring to Figure 4, the water flow in the radiant air conditioning system 1 will be explained.

[0080] 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.

[0081] 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.

[0082] The air conditioning function of the radiant air conditioning system 1 will be explained using its use during the cooling season as an example.

[0083] 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.

[0084] 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.

[0085] Next, we will explain the heat transfer in the blower nozzle 100a in more detail.

[0086] 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 the 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. Outside the air blower nozzle 100a, the cooled air blower nozzle 100a and the induced air Q1 flowing around it exchange heat through convection, cooling the air in the air-conditioned space 2. Furthermore, the cooled air blower nozzle 100 cools the walls of the air-conditioned space 2, the occupants, and other areas with temperature differences. Heat is exchanged with the object through radiation. By reducing the heat load on the cooling system from walls, occupants, etc., the air in the conditioned space 2 is made easier to cool.

[0087] The above explains the air conditioning effect of the radiant air conditioning system 1 on the air-conditioned space 2.

[0088] 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.

[0089] According to the radiant air conditioning system 1, since "first air passage width 171 > second air passage width 172", the air flowing through the first air passage 141 is more likely to flow in the +y direction compared to a configuration where "first air passage width 171 ≤ second air passage width 172". As a result, the wind speed around the fourth surface 114 in the air passage 140 increases, and convective heat transfer around the fourth surface 114 in the air passage 140 is promoted.

[0090] Furthermore, by making the "first air passage width 171 > second air passage width 172", the air flowing into the air passage 140 from the ventilation opening 120 can more easily reach the fourth surface 114. As a result, the air blown out from the outlet 130 can be blown out sufficiently from the fourth surface 114 side as well, without being biased towards the first surface 111 side. In other words, the non-uniformity of the blown air Q0 from the outlet 130 can be suppressed.

[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] A modified example of the cross-sectional shape of the air blower nozzle 100 will be described with reference to Figures 7 and 8. 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 151 is composed of forward path sections 151i and 151j, and the return path 152 is composed of return path sections 152i and 152j. The forward path section 151i is positioned on the +z side of the forward path section 151j and is positioned to be in contact with the forward path section 151j. Similarly, the return path section 152i is positioned on the +z side of the return path section 152j and is positioned to be in contact with the return path section 152j. In this case, the "total path height" is the sum of the z-direction lengths of the forward path sections 151i and 151j, or the sum of the z-direction lengths of the return path sections 152i and 152j. That is, the "total path height" is ("forward path height 163i + forward path height 163j" or "return path height 164i + return path height 164j").

[0095] Figure 8 shows Modification 2. In Modification 2, the forward path section 151i is positioned with a gap between it and the forward path section 151j. Similarly, the return path section 152i is positioned with a gap between it and the return path section 152j. In this case, the "total path height" is either the sum of the lengths in the z direction of the forward path sections 151i and 151j, or the sum of the lengths in the z direction of the return path sections 152i and 152j. That is, the "total path height" is ("forward path height 163i + forward path height 163j" or "return path height 164i + return path height 164j").

[0096] The distance between the return section 152i and the return section 152j is defined as the third height 165. The 160 is divided into a first height 161, a second height 162, a path height 164 (return path heights 164i, 164j), and a third height 165.

[0097] Furthermore, the distance between the forward section 151i and the forward section 151j is defined as the third height 165. The main body height 160 is divided into the first height 161, the second height 162, the path section height 163 (forward section heights 163i, 163j), and the third height 165.

[0098] Similarly, even if the refrigerant path section 150 is divided, it is arranged so that "total path section height > half of the main unit height 160".

[0099] Note that the total path height is the sum of the lengths of the refrigerant path sections 150 in the z direction. Here, the total path height is the sum of the path heights along one z axis. The same applies even if there are two refrigerant path sections 150 ("two locations on the left and right in the x direction" or "two locations on the xy plane"). If there are two refrigerant path sections 150 ("two locations on the left and right in the x direction" or "two locations on the xy plane"), the total path height may be considered to be the one with the larger sum of the lengths of the refrigerant path sections 150 in the z direction. For example, if the refrigerant path section 150 (forward path section 151) is located inside the second surface 112, and the refrigerant path section 150 (return path section 152) is located inside the third surface 113, then if the sum of the lengths in the z-axis direction of the forward path section 151 is greater than that of the return path section 152, then the sum of the lengths in the z-axis direction of the forward path section 151 will be considered the total path height. Conversely, if the sum of the lengths in the z-axis direction of the return path section 152 is greater, then the sum of the lengths in the z-axis direction of the return path section 152 will be considered the total path height.

[0100] (supplement) The following provides further details regarding each embodiment.

[0101] 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.

[0102] 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.

[0103] 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.

[0104] Furthermore, although the multiple air blowing nozzles 100 are 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.

[0105] Furthermore, the air blower nozzle 100 may be made of materials such as sheet metal or resin to reduce manufacturing costs and weight.

[0106] 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.

[0107] Furthermore, the third airflow path 143 and the fourth airflow path 144 can also be omitted. In this case, the second The air passage 142 and the air outlet 130 will be directly connected.

[0108] Alternatively, the third wind path 143 and the fourth wind path 144 can be considered together as a single third wind path 143.

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

[0111] 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.

[0112] 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.

[0113] 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.

[0114] Next, we will explain the effects of this disclosure.

[0115] With a configuration where "first airflow width 171 > second airflow width 172", the air flowing through the first airflow passage 141 is more likely to flow towards the fourth surface 114 than towards the second airflow passage 142 and the outlet 130. In other words, by making it easier for air to flow around the fourth surface 114 of the blower nozzle 100, the uniformity of the flow velocity of the discharged air Q0 blown out from the elongated outlet 130 can be improved.

[0116] 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.

[0117] (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 has a first surface 111, a second surface 112, a third surface 113, and a fourth surface 114. It is connected and has an air 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 includes a first air passage 141 and a second air passage 142, and 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. The length of the first air passage 141 in the x-direction is defined as the width of the first air passage 171. If the length of the second air passage 142 in the x-direction is the width of the second air passage 172, The first air passage 141 is formed in the +z direction more than the refrigerant path section 150. The second air passage 142 is formed in the xy plane where the refrigerant path section 150 exists. It is also possible to have a configuration where "first airway width 171 > second airway width 172".

[0118] With this configuration, compared to a configuration where "first airflow width 171 ≤ second airflow width 172", the air flowing through the first airflow path 141 is more likely to flow in the +y direction. As a result, the wind speed around the fourth surface 114 within the airflow path 140 increases, and convective heat transfer around the fourth surface 114 within the airflow path 140 is promoted.

[0119] Furthermore, by making the "first air passage width 171 > second air passage width 172", the air flowing into the air passage 140 from the ventilation opening 120 can more easily reach the fourth surface 114. As a result, the air blown out from the outlet 130 can be blown out sufficiently from the fourth surface 114 side as well, without being biased towards the first surface 111 side. In other words, the non-uniformity of the blown air Q0 from the outlet 130 can be suppressed.

[0120] As a result, the air-conditioned space 2 can be efficiently air-conditioned, thereby improving thermal comfort.

[0121] (Item 2) The refrigerant path section 150 may be formed inside the main body 110, on the inside of the second surface 112 and the third surface 113.

[0122] With this configuration, the surface area in contact between the refrigerant path 150 and the air in the air passage 140 is larger compared to a configuration where the refrigerant path 150 is formed on the inside of only one of the second surface 112 or the third surface 113. As a result, convective heat transfer is promoted between the refrigerant in the refrigerant path 150 and the air in the air passage 140. Consequently, the air-conditioned space 2 can be air-conditioned more efficiently, thereby improving thermal comfort.

[0123] (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, The return section 152 is formed on the inside of the third surface 113. The refrigerant may also be configured to pass through the return path 152 after passing through the forward path 151.

[0124] This configuration increases the surface area in contact between the refrigerant path 150 and the air in the air passage 140.

[0125] Furthermore, compared to the case where the forward section 151 and the return section 152 are connected in parallel, connecting the forward section 151 and the return section 152 in series increases the flow velocity of the refrigerant.

[0126] As a result, convective heat transfer is promoted between the refrigerant in the refrigerant path 150 and the air in the air passage 140. Therefore, the air-conditioned space 2 can be air-conditioned more efficiently.

[0127] (Item 4) The length between the outlet surface 115 and the opposite surface 116 is set to the main body height 160. If the sum of the lengths of the refrigerant path section 150 in the z direction is defined as the sum of the path heights ("forward path height 163i + forward path height 163j" or "return path height 164i + return path height 164j"), It is also possible to configure it so that "total path height > half of main unit height".

[0128] With this configuration, the surface area in contact between the refrigerant path section 150 and the air in the air passage 140 is larger compared to a configuration where "total path section height ≤ half the main unit height". As a result, convective heat transfer is promoted between the refrigerant in the refrigerant path section 150 and the air in the air passage 140. Consequently, the air-conditioned space 2 can be air-conditioned more efficiently.

[0129] (Item 5) Wind path 140 includes a third wind path 143. If the length of the third airflow path 143 in the x-direction is the width of the third airflow path 173, The third air passage 143 is formed in the -z direction from the refrigerant path section 150. It is also possible to have a configuration where "third windway width 173 > second windway width 172".

[0130] This configuration increases the surface area in contact between the refrigerant path 150 and the air in the air passage 140. As a result, convective heat transfer is promoted between the refrigerant in the refrigerant path 150 and the air in the air passage 140. Consequently, the air-conditioned space 2 can be air-conditioned more efficiently.

[0131] (Item 6) Of the lengths from the refrigerant path section 150 to the opposite surface 116, the shortest length is defined as the first height 161. If the shortest length from the refrigerant path section 150 to the outlet surface 115 is defined as the second height 162, It is also possible to configure it so that "second height 162 > first height 161".

[0132] This configuration suppresses pressure loss caused by the abrupt narrowing of the airflow path from the second airflow path 142 and / or the third airflow path 143 to the outlet 130. In other words, with this configuration, a larger volume of air can be delivered with the same air transport power. As a result, convective heat transfer is promoted between the refrigerant in the refrigerant path section 150 and the air in the airflow path 140. Consequently, the air-conditioned space 2 can be air-conditioned more efficiently.

[0133] (Item 7) If the sum of the x-direction lengths of the refrigerant path section 150 is taken as the total path width (e.g., "forward path width 176 + return path width 177"), It is also possible to configure it so that "total path width ≥ second wind channel width".

[0134] With this configuration, not only does the wind speed of the second air passage 142 increase, but the refrigerant path section 150 and The surface area in contact with the air in the air passage 140 is increased. As a result, convective heat transfer is promoted between the refrigerant in the refrigerant path 150 and the air in the air passage 140. Consequently, the air-conditioned space 2 can be air-conditioned more efficiently.

[0135] (Item 8) The system may also be configured as a radiant air conditioning system 1 comprising a blower nozzle 100 and a blower 220.

[0136] 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.

[0137] 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]

[0138] 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 144 4th Wind Route 150 Refrigerant path section 151, 151i, 151j Outbound journey 152, 152i, 152j Return Trip 160 Main body height 161 First height 162 Second height 163 Path section height 163i, 163j Outbound section height 164 Path section height 164i, 164j Return section height 165 Third Height 170 Body width 171 1st air passage width 172 2nd air passage width 173 Third air passage width 174 4th wind passage width 175 Outlet width 176 Outbound section width 177 Return section width 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

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 includes a first air passage and a second air passage, and 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 length of the first air passage in the x-direction is defined as the width of the first air passage. If the length of the second air passage in the x-direction is defined as the width of the second air passage, The first air passage is formed in the +z direction from the refrigerant path section, The second air passage is formed in the xy plane in which the refrigerant path exists, A blower nozzle in which "the first airflow width > the second airflow width".

2. The air blower nozzle according to claim 1, wherein the refrigerant path portion is formed inside the main body on the inner side of the second surface and the third surface.

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, The return path portion is formed on the inside of the third surface, The air blower nozzle according to claim 2, wherein the refrigerant passes through the forward section and then through the return section.

4. The length between the aforementioned outlet surface and the opposite surface is defined as the height of the main body. If the sum of the lengths of the refrigerant path sections in the z-direction is defined as the total path height, The blower nozzle according to claim 1, wherein "the total height of the path portion > half the height of the main body."

5. The aforementioned air passage includes a third air passage, If the length of the third air passage in the x-direction is defined as the width of the third air passage, The third air passage is formed in the -z direction from the refrigerant path section, The air blower nozzle according to claim 1, wherein "the third airflow width > the second airflow width".

6. The shortest length from the refrigerant path to the opposite surface is defined as the first height. If the shortest length from the refrigerant path to the outlet surface is defined as the second height, The blower nozzle according to claim 1, wherein "the second height > the first height".

7. If the sum of the lengths of the refrigerant path sections in the x-direction is defined as the total width of the path sections, The air blower nozzle according to claim 1, wherein "the total width of the path section ≥ the second air passage width".

8. A radiant air conditioning system comprising a blower nozzle according to any one of claims 1 to 7 and the blower.

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