JP2017194267A - Radiation air conditioning panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a radiation air conditioning panel capable of improving a heat utilization efficiency as compared with that of the conventional panel and capable of more uniformly cooling or heating an entire radiation plate surface.SOLUTION: This invention relates to a radiation air conditioning panel 1 including a hollow box-like main body 2 having a superior thermal conductivity front surface material 2a and an adiathermancy rear surface material 5 in which a blowing-in port 3 is formed at one end of the rear surface material 5 and a blowing-out port 4 is formed at the other end, temperature adjusted air is flowed from the blowing-in port 3 to the blowing-out port 4 into a hollow space of the main body 2 so as to perform a heat exchanging with the air in front of the main body 2 through the front surface material 2a. There are provided a plurality of turbulent flow promoters 7 formed to be protruded from the front surface material 2a and when the blowing-in port 3 is set at an upper place and as seen from the front surface material 2a toward the rear surface material 5, each of the turbulent flow promoters 7 is arranged in horizontal orientation over an entire arrangement between the left end and the right end of the hollow space of the main body 2.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a radiation air-conditioning panel used as a room wall or ceiling material for radiation air-conditioning.

  Conventionally, as a means of indoor air conditioning, radiant air conditioning panels have been widely used to install indoor radiant air conditioning panels on wall surfaces, floors, and ceilings, and distribute conditioned air through them to exchange heat with indoor air. It is used. As a radiation air-conditioning panel used in this radiation cooling and heating equipment, those described in Patent Documents 1 to 11 are known.

  The radiation duct (10) of the radiation cooling and heating apparatus described in Patent Literature 1 includes a rectangular box-shaped duct (11) that opens toward the indoor side, and a radiation panel (12 that closes the indoor opening of the duct (11)). ), A heat insulating material (13) covering the outer peripheral surface of the duct (11) other than the interior side, an input port (18) formed on one side surface of the duct (11), and the input port (18) And an output port (19) formed on the side surface of the duct (11) that faces (see FIGS. 2 to 5 of Patent Document 1). Temperature-controlled air flows into the duct (11) from the input port (18), exchanges heat with room air via the radiation panel (12), and then flows out from the output port (19) (see paragraph [1] of Patent Document 1). 0026], [0030]). In this radiation duct (10), in order to improve the heat exchange efficiency of the radiation panel (12), an L-shaped heat transfer member (15) is attached to the surface inside the duct (11) of the radiation panel (12). (See FIGS. 6 to 10 and paragraphs [0032] to [0038] of Patent Document 1). The heat transfer member (15) is fixed by an adhesive or spot welding so as to be thermally bonded to the radiation panel (12). The heat absorption surface (16A), which is an upright portion of the heat transfer member (15), has a width that is 1/2 to 3/4 of the radiation duct (10) and a height that is substantially the same as the inner height of the radiation duct (10). It is said to be high. Moreover, as arrangement | positioning of a heat-transfer member (15), arrangement | positioning perpendicular | vertical to the flow direction of temperature control air (FIG. 8 of patent document 1) and arrangement | positioning with respect to the flow direction of temperature control air (FIG. 9, FIG. 9 of patent document 1). FIG. 10) is illustrated. By providing this heat transfer member (15), the heat of the temperature-controlled air can be exchanged from the heat transfer member (15) to the radiation panel (12), and heat can be efficiently transferred to the indoor space. (Patent Document 1, paragraphs [0033] [0035] [0038] and the like).

  Patent Document 2 discloses a top plate made of a heat radiation material at the upper end of two adjacent floor joists (8, 8) in a group of tall floor joists (8,...) Arranged in parallel at an appropriate interval. (3) is affixed and fixed, and a heat insulating material (9) is affixed on the lower surface plate (4) located on the lower side between adjacent floor joists (8, 8) to insulate, and the top plate (3) A radiant heating / cooling radiating case (5) having a warm air passage (or cold air passage) (10) surrounded by adjacent floor joists (8, 8) and a heat insulating material (9) is described (Patent Literature). 1 to FIG. 4, and the specification 2 page 2 upper left column, see the same page upper right column). The heat radiating casing (5) has a suction port (1) at one end and a blower outlet (2) at the other end, and a blower (6) for circulating temperature-controlled air near the suction port (1), and A heat exchanger (7) is installed. Further, in the warm air passage (10), a plurality of sheets of reinforcing and rectifying flow are formed so as to form a flow passage of hot air pumped from the blower (6) in a zigzag shape in the longitudinal direction of the warm air passage (10). Plates (12,...) Are provided. The warm air of the conditioned air pumped from the blower (6) to the suction port (1) circulates in the hot air passage (10) in a zigzag manner, heats the top plate 3, and is sent out from the blowout port (2). The And room heating is performed by the radiant heat of this top plate (3).

  In Patent Document 3, a frame member (13) is formed from a plurality of vertical members (11) and cross members (12), and both sides on one side and the other side in the thickness direction of the frame member (13) are disclosed. The face material (15, 16) is fixed to the inside to form an airtight chamber (17), and the heat insulating material (18) is disposed on any surface side of the airtight chamber (17). An air inlet (23) is provided on one side of the structure body (20) along the longitudinal member (11) of the frame member (13) and an air outlet (24 on the other side). ) Are respectively provided in communication with the hermetic chamber (17) (see claim 1 of Patent Document 3 and FIGS. 1 to 4). The panel structure (1) for cooling and heating is supplied with temperature-controlled air from the air inlet (23), and exchanges heat with room air via the face material (15) while flowing through the airtight chamber (17). , Is sent out from the air outlet (24).

  Patent Document 4 has a hollow structure with a hollow inside, and an upper opening (6) that can be opened and closed at the upper part and a lower opening (7) that can be opened and closed at the lower part are respectively provided toward the room, A wall structure (3) in which an air hole (8) through which temperature-controlled air flows is formed at the lower end surface is described (see FIG. 2 of Patent Document 4, page 2, upper left of specification 2). This wall structure (3) is installed as an indoor wall surface. The air-conditioned air flows into the wall structure (3) from the air holes (8), cools the wall structure (3) by heat exchange, and is supplied to the room through the upper opening (6). It becomes counter current and further air-conditions the room.

  Patent Document 5 is an air circulation panel having a function of a wall of a building structure, and has a ventilation path formed by a front plate (1) and a back plate (2), and the front plate (1). Openable and closable openings (7, 8) communicating with the air passage are formed in the upper and lower portions of the back plate (2), and a blower (9) is disposed in the air passage, and the front plate (1) and As the back plate (2), an air circulation panel composed of a plate having a heat exchange function or a heat storage function is described (see claims 1 and 1 to 3 of Patent Document 5).

  Patent Document 6 discloses a plate-shaped surface layer (12) that transfers heat to a section screen (9) that partitions a cooling / heating room (R) in which cooling or heating is performed, and a heating / cooling room (R) on the surface layer (12). A plate-like back side layer (15) that comes into contact with each other from the back side, and a back side layer (15) in which a plurality of linear air flow grooves (15g) are formed at intervals on the surface in contact with the surface layer (12) (Refer to claim 1 of Patent Document 6 and FIGS. 1 to 3). In this radiant panel, conditioned air circulates along the linear air flow grooves (15g) formed on the surface of the back layer (15) in contact with the surface layer (12), and heat exchange is performed on the entire surface layer (12). Is done.

  In addition, Patent Documents 7 to 11 also describe radiation air conditioning panels having various structures.

JP 2012-225517 A Japanese Patent Laid-Open No. 51-146748 JP-A-10-205823 JP-A-3-13746 JP 2004-69129 A JP, 2014-153037, A JP 2008-96052 A JP-A-9-178207 JP-A-5-141708 JP 2008-157519 A JP 2007-24479 A

  The radiant air-conditioning panel has an advantage that forced convection of room air can be prevented from being generated by preventing temperature-controlled air from being blown into the air-conditioning target space. For this reason, since dust in the room does not soar due to the flow of temperature-controlled air flowing in from the outside, it is also used in an operating room or a clean room of a hospital. However, if the temperature-controlled air is not blown into the air-conditioning target space, the air-conditioning is performed only by heat exchange via the panel, so the heat utilization efficiency is higher than when the temperature-controlled air is blown directly into the air-conditioning target space. descend. Therefore, in a radiant air-conditioning panel configured to prevent temperature-controlled air from being blown into the air-conditioning target space (hereinafter referred to as a “non-indoor blow-in type radiant air-conditioning panel”), it is an important technical issue It becomes.

  In the prior art described above, the one described in Patent Literature 3-10 is a form in which temperature-controlled air is circulated straight from the air inlet to the air outlet through the air flow path formed in the radiant air conditioning panel. However, in this type, most of the temperature-controlled air passes from the inlet to the outlet without touching the heat transfer panel. Therefore, when these types are applied to non-indoor injecting radiant air-conditioning panels, the heat utilization efficiency is very high. It is expected to get worse.

  On the other hand, those described in Patent Documents 1 and 2 are provided with an L-shaped heat transfer member and a current plate in the air flow path in the radiation air-conditioning panel, and the flow path is zigzag to adjust the temperature. While improving the heat transfer efficiency from the air to the heat transfer panel and making the temperature-controlled air easily contact the heat transfer panel, the heat utilization efficiency is expected to improve. However, Patent Documents 1 and 2 do not discuss how the airflow in the radiant air-conditioning panel is formed, and these radiant air-conditioning panels need to be devised to further increase the heat utilization efficiency. Conceivable.

  Moreover, in the radiation air-conditioning panel of the said patent document 1, 2, an L-shaped plate-shaped heat-transfer member (15) (or rectifying plate (12)) is zigzag perpendicularly to an air path axial direction in a ventilation path. Although it is set as the arrangement | positioning (refer FIGS. 8-10 of patent document 1, FIG. 2 of patent document 2), when it is set as such a result as a result of the calculation and experiment mentioned later, each heat-transfer member (15) (or The main flow of conditioned air (the flow with the largest flow rate) is formed along the zigzag shortest path of the gap of the rectifying plate (12), and the radiant plate surface of the radiant air-conditioning panel is partially cooled (or heated) It was found that the temperature unevenness (unevenness) increased over the entire radiation plate surface. When such large temperature spots are generated, in the case of cooling, there is a problem that condensation easily occurs at a portion where the temperature is greatly reduced locally, and drain water is easily generated on the wall surface. Similarly, in the radiation air-conditioning panel described in Patent Document 6, since the temperature drop near the air circulation groove (15 g) is remarkable, temperature spots (unevenness) increase on the entire radiation plate surface, and drain water is generated on the wall surface. There is a problem that it is easy.

  Accordingly, an object of the present invention is to provide a radiation air-conditioning panel that can improve the heat utilization efficiency as compared with the conventional radiation air-conditioning panel and can cool or warm the entire radiation plate surface more uniformly. Is to provide.

The first configuration of the radiant air-conditioning panel according to the present invention includes a front material having good heat conductivity and a heat insulating back material, and a blow-in opening is formed at one end of the back material, and a blow is formed at the other end of the back material. A hollow box-shaped main body formed with an outlet is provided, and heat exchange with the air in front of the main body is performed through the front material by allowing temperature-controlled air to flow from the inlet to the outlet in the cavity of the main body. A radiant air conditioning panel that performs
In the cavity of the main body, a plurality of turbulence promoting bodies formed to protrude from the front material,
When viewed from the front material toward the back material with the blowing port facing up, if the right edge of the main body is the right end and the left edge is the left end, each turbulence promoting body is the main body It is characterized by being provided horizontally between the left end and the right end of the cavity.

  According to this configuration, the temperature-controlled air flowing in the cavity is formed by projecting from the front material into the cavity, and providing the turbulence promoting body horizontally between the left end and the right end of the cavity. It becomes a vortex on the downstream side of the flow promoting body, and the temperature-controlled air in the entire cavity is stirred. Therefore, the efficiency of heat exchange with the air in front of the main body through the front material is improved. Further, by providing the turbulent flow promoting body horizontally across the entire space between the left end and the right end of the cavity, the flow of the temperature-controlled air flowing from the air inlet is formed so as to spread over the entire cavity of the radiation air conditioning panel. The Thereby, heat exchange is performed more uniformly over the entire front surface of the radiant air conditioning panel.

According to a second configuration of the radiant air-conditioning panel according to the present invention, in the first configuration, the turbulent flow promoting body is configured by a U-shaped groove member in which both sides of a long plate are bent. , One of the bent flanges of the groove member is fixed to the front member, and the other is fixed or abutted to the rear member,
The web between the two flanges is characterized in that a plurality of laterally elongated openings are formed in the longitudinal direction of the channel member, being biased toward the back material side.

  Thus, by configuring the turbulent flow promoting body as a U-shaped groove having a plurality of openings, heat exchange efficiency can be improved more than conventional ones by experiments and numerical calculations. confirmed. The turbulence promoting body also has a function as a joist to reinforce between both plate surfaces sandwiching the cavity of the main body while stirring the temperature-controlled air.

  A third configuration of the radiant air-conditioning panel according to the present invention is characterized in that, in the first configuration, the turbulence promoting body is configured by a long metal plate having a bent cross section.

  According to a fourth configuration of the radiant air-conditioning panel according to the present invention, in the first configuration, the turbulent flow promoting body has a portion protruding from the front material curved toward the upstream side or the downstream side of the airflow. It is characterized by being.

  According to a fifth configuration of the radiant air-conditioning panel according to the present invention, in any one of the first to fourth configurations, a dispersion made of a porous plate or a slit plate is provided upstream of the air outlet in the cavity of the main body. A board is provided.

In a sixth configuration of the radiation air-conditioning panel according to the present invention, in the first configuration, the blow-in opening is formed in the center of the back material, and the blow-out port extends over the entire periphery of the back material. Formed,
Each of the turbulent flow promoting bodies is provided in a rectangular shape surrounding the blowing port from the blowing port to the blowing port.

  As described above, according to the present invention, it is possible to improve the heat utilization efficiency as compared with the conventional radiation air-conditioning panel, and radiation that can cool or heat the entire radiation plate more uniformly. An air conditioning panel can be provided.

It is an external appearance perspective view of the radiation air-conditioning panel which concerns on Example 1 of this invention. (A) is the perspective view seen from the front side, (b) represents the perspective view seen from the back side. It is a disassembled perspective view of the radiation air-conditioning panel of FIG. It is an expansion perspective view of the front material 2a of FIG. It is the expanded sectional view which cut | disconnected the radiation air-conditioning panel 1 by the surface perpendicular | vertical to the AA line of FIG.1 (b). (A) represents the inlet 3 side, (b) represents the outlet 4 side. It is the fracture | rupture perspective view which cut | disconnected the radiation air-conditioning panel 1 by the surface perpendicular | vertical to the AA line of FIG.1 (b). It is the figure which looked at the front material 2a of the radiation air-conditioning panel 1 which concerns on Example 2 from the back side. It is sectional drawing which cut | disconnected the radiation air-conditioning panel 1 which concerns on Example 2 by the (a) AA line and (b) BB line of FIG. It is a fragmentary sectional view of radiation air-conditioning panel 1 concerning Example 3. It is a fragmentary sectional view of radiation air-conditioning panel 1 concerning Examples 4 and 5. It is the result of having calculated the flow at the time of ventilating the ventilation path 8 in the radiation air-conditioning panel 1 of Example 1. FIG. It is the result (cross section cut | disconnected by the center line) which calculated the heat conduction state of the radiation air-conditioning panel (comparative example 1) without the turbulence promoter 7 by thermofluid calculation. It is the result (surface of the front material 2a seen from the front side) which computed the heat conduction state of the radiation air-conditioning panel (comparative example 1) without the turbulence promotion body 7 by thermofluid calculation. It is the result (cross section cut | disconnected by the center line) which computed the heat conduction state of the radiation air-conditioning panel 1 of Example 1 by thermofluid calculation. It is the result (surface of the front material 2a seen from the front side) which computed the heat conduction state of the radiation air-conditioning panel 1 of Example 1 by thermofluid calculation. The result of calculating the heat conduction state of the radiant air-conditioning panel (Comparative Example 2) in which the width of the turbulent flow promoting body is ½ of the air passage width and is alternately arranged on the left and right sides and the flow path is zigzag (viewed from the front side) The surface of the front member 2a). It is the result (surface of the front material 2a seen from the front side) which computed the heat conduction state of the radiation air-conditioning panel 1 of Example 1. FIG. FIG. 17 shows the result of calculating the heat conduction state of the radiation air-conditioning panel 1 of Example 2 (surface of the front material 2a as viewed from the front side). FIG. 18 shows the result of calculating the heat conduction state of the radiant air-conditioning panel 1 of Example 3 (surface of the front member 2a as viewed from the front side). It is a figure explaining an experimental method. It is a figure showing the structure in the panel housing | casing of the radiation air-conditioning panel of the comparative example 3 used as a comparison object. It is a figure showing the measurement result of the temperature distribution of the heat exchanger plate surface of the radiation air-conditioning panel of Examples 1-3 and the comparative example 3 in the time interval from the cooling condition start to 1 hour. It is a figure showing the measurement result of the temperature distribution of the heat exchanger plate surface of the radiation air-conditioning panel of Examples 1-3 and the comparative example 3 in the time interval from the cooling condition start to 1 hour. It is a figure showing the time change of the average value of the temperature measured in each measurement point of Examples 1-3. It is a figure showing the time change of the difference temperature of FIG. It is an enlarged view of the blower outlet part of the radiation air-conditioning panel which concerns on Example 6 of this invention. It is the external appearance perspective view seen from the back side of the radiation air-conditioning panel which concerns on Example 7 of this invention. It is a perspective view showing the inside (state which removed the back material 5) of the panel housing | casing 2 of the radiation air-conditioning panel of FIG.

Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.
[1] Configuration of radiation air conditioning panel

  FIG. 1 is an external perspective view of a radiation air-conditioning panel according to Embodiment 1 of the present invention. 1A is a perspective view seen from the front side, and FIG. 1B is a perspective view seen from the back side.

  The radiation air-conditioning panel 1 of the present embodiment includes a hollow rectangular box-shaped panel housing 2, and the panel housing 2 is a flat rectangular bowl-shaped front material 2 a that is formed of a good heat conductive material and has one side opened. And a rectangular flat plate 2b that closes the opening surface of the front member 2a (see FIG. 2). And the internal space of the panel housing | casing 2 becomes the ventilation path 8 (refer FIG. 5). A circular air inlet 3 is formed in the center of the plate surface near the upper end of the back plate 2b, and a slit-like air outlet 4 is opened on the plate surface near the lower end of the back plate 2b over substantially the entire plate width. Is formed. An air supply pipe for supplying temperature-controlled air is connected to the inlet 3. Temperature-controlled air supplied from the external air conditioning equipment to the air supply pipe is fed into the tub of the panel housing 2 from the blow-in port 3, passes through the tub and passes through the tub to the panel housing 2. It is discharged to the back side. During this time, the temperature-controlled air exchanges heat with room air via the front plate of the front member 2a (hereinafter referred to as “heat transfer plate 2aa”), thereby performing radiant air conditioning.

  FIG. 2 is an exploded perspective view of the radiant air conditioning panel 1 of FIG. FIG. 3 is an enlarged perspective view of the front member 2a of FIG. FIG. 4 is an enlarged cross-sectional view of the radiant air conditioning panel 1 cut along a plane perpendicular to the line AA in FIG. 4A shows the inlet 3 side, and FIG. 4B shows the outlet 4 side. FIG. 5 is a cutaway perspective view of the radiant air conditioning panel 1 cut along a plane perpendicular to the line AA in FIG.

  As described above, the panel housing 2 includes the front member 2a that opens toward the back side, and the back plate 2b that closes the opening surface of the front member 2a. A flat heat insulating material 2e is attached to the inner surface of the back plate 2b (the surface facing the front material 2a), and the heat insulating material 2e is also connected to the air inlet 3 and the air outlet 4 of the back plate 2b. In the corresponding positions, the same type of blowout port 3 and blowout port 4 are formed as openings. The integrated assembly of the back plate 2b and the heat insulating material 2e is the back material 5.

  The front material 2a is formed with a flange 2c extending vertically inward on the entire edge on the back opening side, and a plurality of retaining holes 2d are formed in the flange 2c. A latching claw (not shown) protrudes from the inner surface of the back plate 2b at a position corresponding to these latching holes 2d, and each latching claw is latched in each latching hole 2d. The back plate 2b is fixed to the front material 2a. A leak-proof fitting 2f is provided at the lower part of each latching hole 2d in the front member 2a so as to surround the latching hole 2d, and the lower part of the latching hole 2d is closed by the leak-proof fitting 2f and the flange 2c. By doing so, the temperature-controlled air is prevented from escaping from the ventilation path 8 inside the panel housing 2 to the retaining hole 2d.

  In the ridge of the front material 2a, a slope-surface-shaped flow guide portion 8 that is inclined downward from the upper end toward the front side from the upper end is disposed at a position facing the blowing port 3. The temperature-controlled air supplied from the blowing port 3 is deflected by about 90 degrees so as to collide with the slope surface of the flow guide portion 8 and toward the lower side of the tub.

  A plurality of turbulence promoting bodies 7 are disposed from the upper part to the lower part of the front member 2a. Each of the turbulent flow promoting bodies 7 is formed of a long bar plate-like groove shape bent in a U-shape (see FIG. 4), and flanges 7c on both sides of the groove shape are bent. One of the 7c is fixed to the heat transfer plate 2aa of the front member 2a, and the other is in contact with the inner surface of the back member 5. The plate surface of the web 7b of the turbulent flow promoting body 7 (the portion of the abdomen that stands up from the front member 2a) is biased toward the back member 5 and has openings 7a, 7a, 7a, 7a that are horizontally long rectangular holes. Are formed (see FIGS. 3 and 5), and these openings 7 a, 7 a, 7 a, 7 a are provided in series in the longitudinal direction of the turbulent flow promoting body 7. The temperature-controlled air flowing in the panel housing 2 passes through the openings 7 a and flows through the ventilation path 8 from the blowing port 3 toward the blowing port 4.

  In addition, although it does not specifically limit in the present invention about the raw material of the turbulent flow promoting body 7, From a viewpoint of improving thermal efficiency as much as possible, it is preferable to use a raw material with high thermal conductivity like a metal. Moreover, the turbulent flow promoting body 7 of the present embodiment also functions as a joist to reinforce between the plate surface (heat transfer plate 2aa) and the back member 5 of the front member 2a while stirring the temperature-controlled air. Have both. Therefore, it is preferable to use a material having the highest possible strength as the material for the turbulence promoting body 7.

  The basic configuration of the radiation air-conditioning panel 1 of the second embodiment is the same as that of the first embodiment, but only the structure of the turbulent flow promotion zone 7 is different. FIG. 6 is a view of the front member 2a of the radiant air conditioning panel 1 according to the second embodiment when viewed from the back side. FIG. 7 is a cross-sectional view of the radiant air conditioning panel 1 according to the second embodiment, cut along line (a) AA and line (b) BB in FIG. 6. In FIG. 6, FIG. 7, the same code | symbol is attached | subjected to the component corresponding to the radiation air-conditioning panel 1 of Example 1. FIG. In addition, in FIG. 6, the position of the blower inlet 3 and the blower outlet 4 currently formed in the back material 5 is shown with the dashed-dotted line.

  As shown in FIG. 7, the turbulence promoting body 7 of the second embodiment is constituted by a long plate material bent into an L shape. And each turbulent flow promotion body 7 is horizontally provided over the whole between the left end and the right end of the cavity (ventilation path 8) of the panel housing | casing 2, as shown in FIG. Each turbulent flow promoting body 7 is joined to the inner surface of the heat transfer plate 2aa, and the height of the standing piece 7d that stands upright from the heat transfer plate 2aa of the turbulent flow promoting body 7 is approximately the height of the ventilation path 8. It is said to be about half.

  The basic configuration of the radiant air-conditioning panel 1 of the third embodiment is the same as that of the first embodiment, but only the structure of the turbulent flow promoting zone 7 is different. FIG. 8 is a partial cross-sectional view of the radiation air conditioning panel 1 according to the third embodiment. 8 (a) and 8 (b) correspond to the central portion of the three cut pieces in FIGS. 7 (a) and 7 (b). Although the turbulent flow promotion zone 7 of the present embodiment is formed of a bent long plate material, the standing piece 7d erected from the heat transfer plate 2aa of the turbulent flow promoting body 7 is perpendicular to the heat transfer plate 2aa. Instead, it is configured to be inclined in the windward direction (direction on the air inlet 3 side). Other configurations are the same as those in the first and second embodiments.

  The basic configuration of the radiation air-conditioning panel 1 of the fourth embodiment is the same as that of the first embodiment, but only the structure of the turbulent flow promotion zone 7 is different. FIGS. 9A and 9B are partial cross-sectional views of the radiant air conditioning panel 1 according to the fourth embodiment. 9 (a) and 9 (b) correspond to the central portion of the three cut pieces in FIGS. 7 (a) and 7 (b). Although the turbulent flow promotion zone 7 of the present embodiment is formed of a bent long plate material, the standing piece 7d erected from the heat transfer plate 2aa of the turbulent flow promoting body 7 is perpendicular to the heat transfer plate 2aa. Instead, it is configured to be curved in an arc shape in the windward direction (direction on the air inlet 3 side). Other configurations are the same as those in the first and second embodiments.

  The basic configuration of the radiant air-conditioning panel 1 of the fifth embodiment is the same as that of the first embodiment, but only the structure of the turbulent flow promoting zone 7 is different. FIGS. 9C and 9D are partial cross-sectional views of the radiant air conditioning panel 1 according to the fifth embodiment. 9 (c) and 9 (d) correspond to the central portion of the three cut pieces in FIGS. 7 (a) and 7 (b). Although the turbulent flow promotion zone 7 of the present embodiment is formed of a bent long plate material, the standing piece 7d erected from the heat transfer plate 2aa of the turbulent flow promoting body 7 is perpendicular to the heat transfer plate 2aa. Instead, it is configured to be curved in an arc shape in the windward direction (direction on the air inlet 3 side). Other configurations are the same as those in the first and second embodiments.

[2] Operational effect and its verification The operation of the radiation air conditioning panel 1 according to the present embodiment configured as described above will be described below.

(1) Usage method The radiation air-conditioning panel 1 of a present Example is used as a wall material of an operating room or a clean room. At the time of installation, the heat transfer plate 2aa of the front member 2a is installed indoors and the back plate 2b faces the outside, and an air conditioning pipe for supplying temperature-controlled air is connected to the blowing port 3 above the back plate 2b. Thereby, the temperature-controlled air supplied from the air conditioning pipe passes through the ventilation path 8 in the radiant air conditioning panel 1 from the air inlet 3 and is discharged from the air outlet 4 below the back plate 2b. At this time, the temperature-controlled air exchanges heat with room air via the heat transfer plate 2aa of the front face member 2a, thereby performing indoor radiant air conditioning.

(2) Action When the temperature-controlled air passes through the ventilation path 8 in the radiant air-conditioning panel 1, it first strikes the board surface of the flow guide section 6 and spreads downward and to the left and right. Since the path is narrowed, the temperature-controlled air spreads over the entire width of the ventilation path 8. Each of the turbulent flow promoting bodies 7 is formed of a groove-shaped member, and is biased toward the back material 5 side of the web 7b, and has laterally elongated openings 7a, 7a, 7a, 7a in the longitudinal direction of the groove-shaped member. A plurality are formed in series. Therefore, the air flow of temperature-controlled air is turbulent and stirred by the web 7b. Thereby, the heat of the temperature-controlled air is efficiently transmitted to the plate surface (heat transfer plate 2aa) of the front member 2a, and the heat utilization efficiency is improved.

(3) Observation of the state of stirring by the two-dimensional fluid calculation FIG. 10 is a result of calculating the flow in the case of passing through the ventilation path 8 in the radiant air conditioning panel 1 of Examples 1 to 5. (A) is the radiation air-conditioning panel of Examples 1 and 2, (b) is the radiation air-conditioning panel of Example 3, (c) is the radiation air-conditioning panel of Example 4, and (d) is the radiation air-conditioning panel of Example 5. is there. The calculation of the flow in FIG. 10 is performed with an incompressible fluid by the two-dimensional finite element method, the width of the ventilation path 8 is 160 mm, the height of the turbulence promoting body 7 is 80 mm, the interval between the turbulence promoting bodies 7 is 400 mm, The input flow velocity in the path 8 was 1 m / s. 10B, the inclination of the standing piece 7d of the turbulent flow promoting body 7 with respect to the heat transfer plate 2aa is 60 degrees, and in FIGS. 10C and 10D, the bending of the standing piece 7d of the turbulent flow promoting body 7 is performed. The shape was an arc. Further, in FIGS. 10A to 10D, the flow velocity in the ventilation path 8 is indicated by the shade of the background color, and the streamline is indicated by a white line.

  From FIG. 10, in any case, in the radiation air-conditioning panel 1 of Examples 1-5, the temperature-controlled air which flows through the ventilation path 8 produces a vortex on the upstream side of the turbulence promoting body 7 and is stirred. I understand. By this stirring action, the heat of the conditioned air is efficiently transmitted to the heat transfer plate 2aa. Further, when the degree of stirring of the temperature-controlled air is compared, the turbulent flow promoting body 7 (FIG. 10 (d)) of Example 5 and the turbulent flow promoting body 7 (FIG. 10 (b)) of Example 3 are best stirred. Then, the turbulent flow promoting body 7 (FIG. 10 (a)) of Examples 1 and 2 and the turbulent flow promoting body 7 of Example 4 (FIG. 10 (c)) are well stirred. Therefore, from the viewpoint of improving the heat transfer efficiency by stirring the temperature-controlled air, the heat transfer efficiency is expected to be most improved in Examples 5 and 3, and then the heat transfer efficiency is improved in the order of Examples 1, 2, and 3. Expected.

(4) Calculation of heat transfer efficiency by three-dimensional thermo-fluid calculation The result of calculating the heat conduction state between the radiation air-conditioning panel without the turbulence promoting body 7 and the radiation air-conditioning panel 1 of this embodiment by thermo-fluid calculation is shown. 11 and 12 show the calculation results of the radiation air-conditioning panel without the turbulence promoting body 7, and FIGS. 13 and 14 show the calculation results of the radiation air-conditioning panel 1 of this embodiment. 11 and 13 show cross sections cut along the center line, and FIGS. 12 and 14 show the surface of the front member 2a as viewed from the front side.

  In this calculation, the temperature-controlled air for cooling at 10 ° C. was fed from the blowing port 3, and the temperature change of the room air near the heat transfer plate 2aa was calculated. 11 and 13 show the temperature distribution in the vicinity of the air inlet 3, but comparing the two, the radiation air-conditioning panel 1 of Example 1 is more heat-conductive plate 2aa than the radiation air-conditioning panel without the turbulence promoting body 7. It can be seen that the temperature of the indoor air near the surface is reduced by about 1 ° C., and the heat exchange efficiency is improved. Further, comparing FIG. 12 with FIG. 14, the radiant air conditioning panel 1 of Example 1 has a more uniform temperature over the entire plate surface of the heat transfer plate 2aa than the radiant air conditioning panel without the turbulence promoting body 7. It can be seen that the temperature is lowered and the temperature-controlled air flowing into the ventilation path 8 spreads over the entire width and heat is efficiently exchanged.

  Next, in order to compare the effects of the radiation air-conditioning panel described in Patent Documents 1 and 2 (radiation duct (10) or radiation-type heating / cooling case (5)), Patent Documents 1 and 2 are used as comparative examples. The thermal fluid calculation is performed for the case where the width of the turbulent flow promoting body is ½ of the width of the air passage 8 and the flow path is zigzag alternately and the radiant air conditioning panel 1 of the first embodiment is A comparison was made.

  FIG. 15 shows the result of calculating the heat conduction state of the radiation air-conditioning panel (Comparative Example 2) in which the width of the turbulent flow promoting body is ½ of the air passage width and is alternately arranged on the left and right sides and the flow path is zigzag. The surface of the front member 2a as viewed from the side). FIG. 16 shows the result of calculating the heat conduction state of the radiant air-conditioning panel 1 of Example 1 (surface of the front material 2a as viewed from the front side), and FIG. 17 shows the heat conduction state of the radiant air-conditioning panel 1 of Example 2. FIG. 18 shows the result (surface of the front member 2a viewed from the front side), which is the result (surface of the front member 2a viewed from the front side), and FIG. 18 shows the heat conduction state of the radiant air-conditioning panel 1 of Example 3. For comparison, the calculation conditions such as the input flow velocity and the input air temperature are the same in FIG. 15 and FIGS. In the radiation air-conditioning panel of FIG. 15, the flow of temperature-controlled air tends to concentrate near the center line where the left and right turbulence promoting bodies 7 are interrupted, so that the temperature near the center line is higher than in other regions. The temperature drops significantly. Therefore, compared with the case of Examples 1-3 (FIGS. 16-18), the temperature spot on the surface of the front material 2a becomes very large. Therefore, it can be seen that the radiation air-conditioning panels described in Patent Documents 1 and 2 tend to cause condensation near the center line when indoor humidity is high, and drain water is generated on the wall surface. On the other hand, in the radiation air-conditioning panel 1 of Examples 1 to 3, the temperature gradient of the surface of the front member 2a is small, and condensation is unlikely to occur.

(5) Experimental Results Finally, the results of experimental observations using a prototype for the heat conduction state of the radiant air conditioning panel 1 according to the present invention will be described. In the experiment, the radiation air-conditioning panel 1 of Examples 1 to 3 and the radiation air-conditioning panel (Comparative Example 3) in which a plurality of linear air circulation grooves are formed in the panel housing with an interval are described. Used.

  In order to make the environmental conditions uniform, as shown in FIG. 19, the radiant air conditioning panel of Comparative Example 3 and the radiant air conditioning panel of the specimen were installed side by side on a part of the wall surface of the room, and the control for cooling was performed from the back. This was done by passing warm air and photographing the surface of each radiation air-conditioning panel with a thermo camera installed indoors (see FIGS. 19A and 19C). As the thermo camera, an infrared thermography device manufactured by InfReC was used. Further, at a plurality of measurement points on the surface of each radiant air-conditioning panel (see FIG. 19B), the surface temperature is measured by a thermometer, and an anemometer is installed at the outlet of each radiant air-conditioning panel, and the exit wind speed Was measured.

  FIG. 20 is a diagram illustrating a structure inside the panel casing 101 of the radiation air-conditioning panel 100 of Comparative Example 3 used as a comparison target. The radiant air conditioning panel 100 of Comparative Example 3 is the same as the radiant panel described in Patent Document 6, and as shown in FIG. The structure in which the blower outlet 103 is provided is the same as that of a present Example. In the panel casing 101, an air flow groove 104 that is wide in the vertical direction at the center is formed to fill up and down, and a plurality of air flow grooves 105 are formed horizontally symmetrically about the air flow groove 104 as a symmetry axis. Has been. The temperature-controlled air sent from the blow-in port 102 passes through the air circulation grooves 104 and 105 and is discharged from the blow-out port 103. Meanwhile, heat is exchanged with room air via a heat transfer plate provided on the front side of the air circulation grooves 104 and 105.

  21 and 22 are diagrams showing measurement results of the temperature distribution on the surface of the heat transfer plate of the radiation air conditioning panels of Examples 1 to 3 and Comparative Example 3 in the time interval from the start of the cooling condition to 1 hour. In this experiment, Examples 1 to 3 cannot be measured at the same time, so the room temperature conditions are not uniform in the measurements of Examples 1 to 3. Therefore, the radiation air-conditioning panel 1 of Examples 1 to 3 is measured side by side with the radiation air-conditioning panel 100 of Comparative Example 3, and compared with the conventional radiation air-conditioning panel 100, and the radiation air-conditioning panel 100 is used as a reference for correcting environmental conditions. ing.

  As is clear from FIGS. 21 and 22, in the radiant air conditioning panels 1 of Examples 1 to 3, the temperature change on the surface of the heat transfer plate 2aa is gradual and local low temperature portions are unlikely to occur. Moreover, the temperature drop of the whole board surface is quick, and the temperature is lowered to a lower temperature than in Comparative Example 3. Therefore, it can be seen that the radiation air conditioning panels 1 of Examples 1 to 3 have higher heat transfer efficiency than Comparative Example 3.

  FIG. 23 is a diagram illustrating a temporal change in the average value of the temperatures measured at each measurement point in Examples 1 to 3. FIG. 24 is a diagram illustrating the change over time of the differential temperature in FIG. FIGS. 23A to 23C show the average values of the measured temperatures themselves, and also show the measured values of Comparative Example 3 measured at the same time. FIG. 24 shows the difference which subtracted the average temperature of the comparative example 3 of the said time from the average temperature of each Example in each time about each of FIG.23 (a)-(c). In FIG. 24, the positive and negative values of the differential temperature value are reversed, and the temperature is lower as compared with Comparative Example 3 as it goes upward.

  24, in the radiation air-conditioning panel 1 of Examples 1 to 3, the average temperature at the measurement point was observed to be lower by about 1.5 to 1.7 ° C. than the radiation air-conditioning panel 100 of Comparative Example 3. Further, from FIG. 23, it takes about 40 minutes for the radiation air-conditioning panel 100 of Comparative Example 3 to reach 15 ° C., whereas all of the radiation air-conditioning panels 1 of Examples 1 to 3 have a temperature of 15 ° C. in about 10 minutes. It can be seen that the rate of temperature decrease is faster.

  FIG. 25 is an enlarged view of a portion of the air outlet 4 of the radiation air-conditioning panel according to Embodiment 6 of the present invention. FIG. 25A shows an embodiment in which a slit plate-like dispersion plate 9 is formed at the outlet 4, and FIG. 25B shows an embodiment in which a porous plate-like dispersion plate 9 is formed at the outlet 4. The radiation air-conditioning panel 1 of the present embodiment is the same as that of the first embodiment with respect to the configuration of parts other than the air outlet 4, and the description thereof is omitted. In FIGS. 25 (a) and 25 (b), the dispersion plate 9 is formed integrally with the back plate 2b by punching slits or small holes in the back plate 2b. And may be configured to be formed on a separate plate and fixed to the back plate 2b.

  By forming the dispersion plate 9 at the air outlet 4 in this way, a uniform flow resistance is generated at the air outlet 4 as a whole, and therefore there is no dispersion plate 9 in the ventilation path 8 in the panel housing 2. Compared to the case, the flow of the temperature-controlled air tends to spread over the entire width. Thereby, the temperature of the heat transfer plate 2aa can be made more uniform.

  FIG. 26 is an external perspective view of the radiant air-conditioning panel according to Embodiment 7 of the present invention viewed from the back side. Since the front side is the same as FIG. FIG. 27 is a perspective view showing the inside of the panel housing 2 of the radiant air conditioning panel of FIG. 26 (a state in which the back material 5 is removed). In FIG. 26 and FIG. 27, parts corresponding to the respective constituent parts of the radiation air conditioning panel of the first embodiment are denoted by the same reference numerals.

  In the radiation air-conditioning panel 1 of the seventh embodiment, the air inlet 3 is formed in the center of the back material 5. In addition, along the four peripheral edges of the backing material 5, an elongated rectangular outlet 4 is formed on the plate surface of the backing material 5 in the vicinity of the peripheral edge over the entire periphery. Inside the panel housing 2, a plurality of turbulence promoting bodies 7 are provided from the blowing port 3 to the blowing port 4 in a rectangular frame shape that surrounds the blowing port 3 with the blowing port 3 as the center. Each turbulent flow promoting body 7 is formed of a U-shaped groove member in which both sides of a long plate are bent. One of the flanges at both ends of the groove member is the front member 2a, and the other is the rear member. 5 is fixed. The web between the two flanges of the channel member forming the turbulent flow promoting body 7 is formed with a plurality of laterally elongated openings in the longitudinal direction of the channel member, being biased toward the back member 5 side. The shape of the turbulence promoting body 7 is the same as that in the first embodiment. Each turbulence promoting body 7 also has a function as a joist material that reinforces the two plate members (the heat transfer plate 2aa and the back member 5) sandwiching the cavity of the main body so as not to bend.

  Thus, by arranging the blowing port 3 in the center of the back material 5 and arranging the blowing port 4 over the entire periphery of the back material 5, the temperature-controlled air is directed from the blowing port 3 in the center toward the periphery. Spread evenly. Thereby, the temperature of the heat transfer plate 2aa can be made more uniform.

DESCRIPTION OF SYMBOLS 1 Radiation air-conditioning panel 2 Panel housing | casing 2a Front surface material 2aa Heat-transfer plate 2b Rear surface plate 2c Flange 2d Stopping hole 2e Heat insulation material 2f Leak-proof metal fitting 3 Blowing port 4 Outlet port 5 Back surface material 6 Conducting part 7 Turbulence promotion body 7a Opening 7b Web 7c Flange 7d Standing piece 8 Ventilation path 9 Dispersing plate

Claims (6)

It has a good heat conductive front material and a heat insulating back material, and comprises a hollow box-shaped body in which a blow-in port is formed at one end of the back material and a blow-out port is formed at the other end of the back material, A radiant air-conditioning panel that exchanges heat with air in front of the main body through the front material by allowing temperature-controlled air to flow into the cavity of the main body from the inlet to the outlet,
In the cavity of the main body, a plurality of turbulence promoting bodies formed to protrude from the front material,
When viewed from the front material toward the back material with the blowing port facing up, if the right edge of the main body is the right end and the left edge is the left end, each turbulence promoting body is the main body A radiant air-conditioning panel, which is horizontally provided between the left end and the right end of the cavity. The turbulent flow promoting body is constituted by a U-shaped groove member in which both sides of a long plate are bent, and one of the flanges at both ends of the groove member is fixed to the front member. The other is fixed or in contact with the back material,
The radiant air conditioner according to claim 1, wherein the web between the two flanges is formed with a plurality of laterally elongated openings in the longitudinal direction of the channel-shaped member, being biased toward the back member side. panel.   The radiant air-conditioning panel according to claim 1, wherein the turbulent flow promoting body is formed of a long metal plate having a bent cross section.   The radiant air-conditioning panel according to claim 1, wherein the turbulent flow promoting body is curved at a portion protruding from the front material toward an upstream side or a downstream side of the airflow.   The radiation air-conditioning panel according to any one of claims 1 to 4, further comprising a dispersion plate made of a porous plate or a slit plate on the upstream side of the air outlet in the cavity of the main body. The blow-in opening is formed in the center of the back material, and the blow-out port is formed over the entire periphery of the back material,
The radiant air-conditioning panel according to claim 1, wherein a plurality of the turbulent flow promoting bodies are provided in a rectangular shape centering on the air inlet and surrounding the air outlet from the air outlet to the air outlet. .