JP2012154611A - One-span air conditioning system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an energy-saving cost-reduction one-span air conditioning system capable of reducing a space, being easily constructed, and providing comfortable air-conditioning.SOLUTION: This one-span air conditioning system performing air-conditioning by every air conditioning space S between main beams, includes an air conditioner 20 supplying the air-conditioning air to the air-conditioning spaces S between main beams, an outdoor unit 40 supplying the air-conditioning air over the plurality of air-conditioning spaces S between main beams, an induction radiation unit 1 for inducing and mixing the air in the air-conditioning spaces S between main beams by the supplied air-conditioning air, supplying the rectified air to the air-conditioning spaces S between main beams, and radiating the heat of the induced and mixed air to the air-conditioning spaces S between main beams, and an induction supply opening 60 for inducing and mixing the air of the air-conditioning spaces S between main beams by the supplied air-conditioning air, and supplying the same to the air-conditioning spaces S between main beams.

Description

  The present invention relates to a one-span air conditioning system.

  In office buildings, etc., air conditioning on a single floor is common, and since the air-conditioning range is wide, large air conditioners and machine rooms are required, making construction cumbersome. Further, in a normal air conditioner, because of air conditioning by forced convection of cold air or warm air, temperature unevenness is likely to occur in the floor, and expensive and complicated air conditioning control has been required to eliminate it.

JP-A-60-191157

  Moreover, there is a limit to lowering the running cost with the conventional heat source water temperature and supply air temperature of the cold / hot water type air conditioner.

  In order to solve the above-mentioned problems, the present invention is a one-span air conditioning system that air-conditions each air-conditioned space between main beams, and has a coil that heat-exchanges return air as air-conditioning air and uses the air-conditioning air as the air-conditioning space between the main beams. The main features include an air conditioner to be supplied and an external air conditioner that has a coil for heat exchange of the outside air as air conditioning air and supplies the air conditioning air across a plurality of the air conditioning spaces between the main beams. And

According to the inventions of claims 1, 2, and 3,
(1) Since the air-conditioning range is one span (air-conditioning space between main beams), it can be designed with a small air conditioner, saving space and facilitating construction.

According to the invention of claim 3,
(1) In the intermediate period when the air conditioning load is low, the supply air temperature is set by mixing outside air and return air with different temperatures depending on the external air conditioner, without exchanging heat between the air conditioner and the air conditioner coil. Air conditioning can be adjusted to the temperature, saving energy.
(2) When the air-conditioning space between the main beams is high in winter and cooling is required, the external air conditioner mixes the low-temperature outside air and the high-temperature return air without cooling the air-conditioner and the external air-conditioning coil. By doing so, the supply air temperature can be adjusted to the set temperature for cooling and energy saving.
(3) In the case of a cold / hot water type coil, it is possible to reduce the cost without using a four-pipe method in which cold water and hot water flow simultaneously.

According to the invention of claim 4,
(1) Compared with air conditioning by forced convection of cold or warm air because the air in the air conditioning space between the main beams is attracted and mixed, and the heat of the induced mixed air is radiated to the air conditioning space between the main beams while blowing it into the air conditioning space between the main beams. Comfortable air conditioning without cold drafts or temperature unevenness can be achieved.
(2) Since the air-conditioned space between the main beams is attracted and mixed and reheated, dew condensation at the outlet of the attracting radiation unit can be prevented during low temperature blowing. Therefore, by reducing the supply air volume by increasing the cooling capacity or heating capacity per air volume of air-conditioning air (lowering or increasing the supply air temperature than usual) and reducing the size of equipment such as ducts. Can reduce costs.

According to the invention of claim 5,
(1) Since the air-conditioned space between the main beams is attracted and mixed and reheated, dew condensation at the outlet can be prevented during low temperature blowing. Therefore, by reducing the supply air volume by increasing the cooling capacity or heating capacity per air volume of air-conditioning air (lowering or increasing the supply air temperature than usual) and reducing the size of equipment such as ducts. Can reduce costs.

According to the invention of claim 6,
(1) Since radiation is not attenuated, even if the air conditioning of one of the spans (the air conditioning space between the main beams) is stopped, the floor will be affected by radiation from the operating span and re-radiation from the radiation site. The overall temperature can be averaged. Therefore, when the air conditioning load is reduced, if the operation of the air conditioner is turned on and off (ON-OFF) in units of the airspace between the main beams, the air conditioning capacity can be adjusted without temperature unevenness, and expensive and complicated air conditioning control becomes unnecessary.

According to the invention of claim 7,
(1) Since the elliptical tube has a small pressure loss, the number of coils can be increased to increase the effective length of the heat transfer tube, and a coil capable of high heat recovery can be obtained from a low exergy heat source with a small amount of stored energy. That is, a large air conditioning capacity can be obtained with a small amount of energy, resulting in energy saving.

According to the invention of claim 8,
(1) At the time of air cooling, the coil inlet heat source water temperature is set to 10 to 12 ° C., the coil inlet / outlet water temperature difference is set to 8 to 10 ° C., and the air conditioning air temperature to be supplied is set to 12 to 14 ° C. Significant energy savings can be achieved with a small amount of water, low-temperature air flow, and small air volume. Similarly, at the time of air heating, the coil inlet heat source water temperature is set to 35 to 40 ° C, the coil inlet / outlet water temperature difference is set to 8 to 10 ° C, and the air conditioning air temperature to be supplied is set to 32 to 37 ° C, thereby reducing the burden on the heat source device. It is possible to save energy by using a small amount of water, high-temperature air blowing, and a small amount of air.
(2) Since the blast power is reduced by using an elliptical tube, the coil can be further heat-collected and further energy saving.

According to the invention of claim 9,
(1) When there is a large daily temperature difference, such as during an intermediate period, cooling and heating can be switched according to changes in temperature, improving comfort.
(2) When the air conditioning load is small, such as in an intermediate period, air conditioning can be performed simply by stopping the air conditioner and operating only the external air conditioner so that cooling and heating can be switched.

  FIG. 1 and FIG. 2 show an embodiment of a one-span air conditioning system for air-conditioning for each main-beam air-conditioned space S of the present invention. This one-span air-conditioning system includes a coil 23 for heat exchange of return air as air-conditioning air. The air conditioner 20 that supplies the air-conditioning air to the air-conditioning space S between the main beams and the coil 43 that exchanges heat as air-conditioning air and supplies the air-conditioning air across the air-conditioning spaces S between the main beams. The air conditioner 40 and the supplied air-conditioning air induces and mixes the air in the air-conditioning space S between the main beams, blows out to the air-conditioning space S between the main beams in a rectified manner, and radiates the heat of the induced mixed air to the air-conditioning space S between the main beams. The induction radiating unit 1, the induction air outlet 60 that draws and mixes the air in the air-conditioning space S between the main beams with the supplied air-conditioning air, and blows it out to the air-conditioning space S between the main beams; It includes a not shown exhaust port to exhaust the air in the regulating space S, and a control means R for turning on and off the operation of the air conditioner 20 in the main Harima conditioned space S units. The air-conditioning space S between the main beams is a space surrounded by the main beams H in the rooms and halls of various buildings such as office buildings, hospitals, and hotels.

  As shown in FIGS. 3 and 4, the air conditioner 20 includes at least a blower path 22, a heat exchange coil 23, and a fan 24 in a horizontally long casing 21, and is installed on the ceiling C. The casing 21 is provided with an air intake port 25, a diversion chamber 27 having a plurality of air supply ports 26, a drain pan 28 for discharging condensed water, and a removable in-machine inspection door 32. The diversion chamber 27 is connected in communication with the air passage 22. The air supply port 26 communicates with the induction radiating unit 1 and / or the induction outlet 60 through the air duct D, and supplies air to the air conditioning space S between the main beams. The air intake port 25 communicates with the main beam air-conditioned space S through a ceiling chamber, a ventilation port, and the like, and takes in return air.

  The fan 24 is provided in the air blowing path 22 on the wind of the coil 23 and blows air into the coil 23 in a pushing manner. The solid and dotted white arrows in FIGS. 3 and 4 indicate the blowing direction, and the air sent from the fan 24 passes through the coil 23 and is heat-exchanged, and is supplied from the air supply port 26 as cool and warm air. . The coil 23 is formed by inserting heat transfer tubes into a large number of heat transfer plates provided so as to allow ventilation, and heat medium or refrigerant flowing through the heat transfer tubes and the passing air exchange heat through the heat transfer tubes and the heat transfer plates. . The heat transfer tube is preferably an elliptical tube, but may be a circular tube. The diversion chamber 27 is provided in a portion of the casing 21 that faces the air outlet surface e of the coil 23, and the air supply port 26 is provided so that the air supply direction of the supply air is directed to avoid obstacles such as beams. As a result, even if there is an obstacle at the tip of the air supply port 26 of the flow dividing chamber 27, a simple-shaped air duct can be laid and easily connected to the air supply port 26 without using a complicated-shaped air duct. Construction becomes easy.

  The air passage 22 in the casing 21 is provided with a heat exchange coil 23 obliquely with respect to the air blowing direction. A rectifying guide 29 for narrowing the distance between the air inlet surface a and the airflow passage facing portion b from the windward side in the air blowing direction toward the leeward side is provided at a portion b of the airflow passage 22 facing the air inlet surface a of the coil 23. Provide. A part of the rectifying guide 29 is openable and closable, and is configured by an opening / closing member 30 that faces the air inlet surface a side of the coil 23 from the leeward side of the coil 23 by being opened. Thus, by providing the coil 23 obliquely with respect to the blowing direction, a coil having a capacity larger than the heat exchange capacity (heat transfer area) per volume of a general air conditioner can be mounted, and the air conditioner is compact. It becomes. Moreover, since the space | interval of the air inlet surface a of the coil 23 and the ventilation path opposing part b is narrowed by the rectification | straightening guide 29 toward the leeward side in the ventilation direction, the drift of coil passage air can be prevented and heat There is no exchange loss. Since the air conditioner 20 is compact and has a large capacity, it is suitable for a system in which one span is air-conditioned by ceiling installation.

  The opening / closing member 30 has a single-opening door shape whose opening degree is variable / fixable (as shown by dotted lines and imaginary lines in FIG. 3), the opening / closing center axis c of the opening / closing member 30 is on the windward side, and the swinging leading edge of the opening / closing member 30 The portion d is provided on the leeward side, and the area of the opening 31 formed by the leeward end edge of the coil 23 and the swinging tip edge d of the opening / closing member 30 is configured to be adjustable. By swinging the opening / closing member 30 and changing the amount of bypass air from the opening 31, the balance of the air volume and the air speed of the blown air to the coil air inlet surface a is adjusted to a desired value. The opening / closing member 30 can be composed of various kinds of fixtures such as a known hinged door and a bolt / nut, or the opening / closing member 30 of the rectifying guide 29 can be changed to various structures such as a shutter structure and a damper structure. Further, the direction and quantity of the air supply port 26 of the diversion chamber 27 can be freely changed.

  In this way, since a part of the rectifying guide 29 is constituted by the opening / closing member 30, maintenance and inspection of parts such as coils in the casing 21 can be performed from the ceiling without lowering the air conditioner 20 from the ceiling. Is good. By adjusting the opening degree of the opening / closing member 30, the air volume and the wind speed can be made uniform between the windward side and the leeward side of the coil air inlet surface a, and no variation occurs. Therefore, heat can be exchanged uniformly and efficiently over the entire area of the coil 23, and temperature unevenness of the blown air (and hence at the induction radiation unit 1 and / or the induction outlet 60) does not occur, and stable comfortable air conditioning can be performed. Since the opening / closing member 30 serves as both a coil air volume / wind speed distribution adjusting member and an inspection member, the number of members can be reduced and the manufacturing cost can be reduced.

  As shown in FIGS. 5 and 6, the external air conditioner 40 is provided in a vertically long casing 41, a ventilation path 42, a heat exchange coil 43, an air supply fan 44, a filter 47, and coil condensate discharge. A drain pan 48 and a humidifying nozzle 54 of a steam humidifier are installed on the floor. The casing 41 is provided with an air intake port 45, an air supply port 46, and an in-flight inspection door 49, and the air intake port 45 and the air supply port 46 are connected in communication with each other through an air passage 42. The air supply port 46 communicates with the induction radiating unit 1 and / or the induction outlet 60 through the air duct D and supplies air to the air conditioning space S between the main beams. The air intake 45 takes in outside air from the machine room 50 which also serves as an air intake chamber. The machine room 50 is configured by surrounding the casing 41 with a partition 55. Therefore, a simple machine room can be provided in the partition 55, and it can also be used as an air intake chamber. Therefore, a member for the air duct is not required, and the cost can be reduced.

  The fan 44 is provided in the ventilation path 42 leeward of the coil 43 and blows air in a suction manner. The solid and dotted white arrows in FIGS. 5 and 6 indicate the blowing direction, and the air sucked by the fan 44 passes through the coil 43 and is heat-exchanged, and is supplied as cool and warm air from the air supply port 46. . The coil 43 is configured by inserting a heat transfer tube into a large number of heat transfer plates provided so as to allow ventilation, and the heat medium or refrigerant flowing through the heat transfer tube and the passing air exchange heat through the heat transfer tube and the heat transfer plate. . The heat transfer tube is preferably an elliptical tube, but may be a circular tube.

  The casing 41 includes a coil block 51 provided with a coil 43 therein, a hollow maintenance block 52, and a fan block 53 provided with a fan 44, which are stacked and connected in this order. An air intake 45 is provided on one surface of the coil block 51, and the coil 43 is disposed in the vicinity of the air intake 45 with a filter 47 interposed therebetween. A removable in-machine inspection door 49 for inserting and removing the filter 47 is provided on the other surface opposite to the one surface of the maintenance block 52, and the in-machine inspection door 49 is opened (as indicated by the phantom line in FIG. 5), and the filter 47 is inserted and removed. To do. A humidifying nozzle 54 is provided between the other surface of the coil block 51 and the coil 43 so that humidification steam is discharged by the coil block 51, and evaporation is absorbed in both spaces of the coil block 51 and the maintenance block 52. Let the air humidify.

  Thus, the evaporation absorption distance of steam humidification can be lengthened using the space of the maintenance block 52. Therefore, the humidification efficiency is good and the saturation efficiency can be increased, and the humidity control range is widened to improve the comfort. Since the maintenance block 52 is used for both maintenance and humidification, it is possible to prevent an increase in the size of the machine body, and since the stacking is made vertically, the installation area can be reduced, and the filter 47 from the side opposite to the air intake 45 of the casing 41 can be reduced. Therefore, there is no need for a maintenance space on the air inlet 45 side, and space saving can be achieved. Because it is compact, it is suitable for a system that air-conditions one span by floor installation.

  In addition, as a steam type humidifier, it can change to various things, such as a well-known electrode type, an electrothermal type, and a vapor | steam spraying type, or a humidifier can also be made into a vaporization type. In the illustrated example, only the humidification nozzle 54 that discharges steam is illustrated, but a device such as a steam generator that supplies steam to the humidification nozzle 54 may be provided in the casing 41. Further, the air intake 45 and the filter 47 may be provided on the other surface of the casing 41.

  The coil 23 and / or the coil 43 is a cold / hot water type coil that cools and heats the air-conditioning air with cold / hot water. The coils 23 and 43 are connected to a heat source device via a water pipe (not shown), and the heat source water whose temperature is adjusted by the heat source device circulates between the coil 23 and / or the coil 43 and the heat source device. At this time, at the time of air cooling, the coil inlet heat source water temperature is set to 10 to 12 ° C., the coil inlet / outlet water temperature difference is set to 8 to 10 ° C., and the supplied air conditioning air temperature is set to 12 to 14 ° C. The inlet heat source water temperature is set to 35 to 40 ° C, the coil inlet / outlet water temperature difference is set to 8 to 10 ° C, and the air conditioning air temperature to be supplied is set to 32 to 37 ° C. In addition, when the coils 23 and 43 are round tubes, if the number of coils is increased in order to achieve the above set temperature, the blowing power is greatly increased, and the energy saving effect is reduced. The control means R includes at least a function of controlling the amount of water flow to the external air conditioner 40 and a function of adjusting the heat source water temperature, in addition to the function of controlling the amount of water flow to the coil 23 of the air conditioner 20 to turn the operation on and off. ing.

  The air conditioning air can be changed to the external air conditioner 40 having the coil 43 that exchanges heat between the return air and the outside air so that the air volume can be adjusted. In this case, a damper mechanism (not shown) that adjusts the amount of outside air and the amount of return air passing through the coil 43 by 0 to 100% is provided, and the air volume is controlled by the control means R. By this damper mechanism, return air and outside air having different temperatures can be mixed and supplied to the air-conditioning space S between the main beams, and air-conditioning can be performed in the intermediate period and winter without being cooled or heated by the coils 23 and 43. If the supply air temperature is insufficiently adjusted to the set temperature even when the outside air and the return air are mixed, the air conditioning air can be air-conditioned by exchanging the air-conditioning air by the coil 43 of the external air conditioner 40 by the amount of the adjustment shortage. For example, in the case of winter cooling, when the supply air temperature becomes lower than the set temperature when the outside air and the return air are mixed, it can be adjusted by heating with the heating hot water of the coil 43 of the external air conditioner 40. This eliminates the need for a four-pipe pipe that allows cold water and hot water to flow simultaneously.

  In the illustrated example, the air conditioner 20 is for ceiling installation, but it can be freely used for floor installation. Although illustration is omitted, for example, the humidifier may be omitted from the external air conditioner 40. In addition, the coil 23 and / or the coil 43 may be a direct expansion coil that exchanges heat so that the air-conditioning air is cooled and switched with a refrigerant. Although not shown in the figure, for example, the air-conditioner 20 and the external air conditioner 40 are repeatedly subjected to the compression / condensation / expansion / evaporation process sequence for the circulating refrigerant, and the refrigerant evaporating process is performed on the air that exchanges heat with the circulating refrigerant. What is necessary is just to provide the well-known heat pump which can change heat | fever absorption in a refrigerant | coolant condensation process, and can switch an evaporation process and a condensation process. The configuration of the equipment constituting the heat pump can be freely changed, and the water heat source method or the air heat source method can be used, or the evaporator / condenser integrated method or the evaporator / condenser separate method.

  As shown in FIGS. 7 to 12, the attracting radiation unit 1 is installed on the ceiling C of the main beam conditioned space S. The induction radiating unit 1 and the air conditioner 20 and / or the external air conditioner 40 are connected in communication via the air duct D. The induction radiating unit 1 has an air supply unit 11 that sends out air-conditioning supply air and an induction port 10, and the air in the air-supplying unit 11 is blown into the air supply unit 11, thereby attracting and mixing the air in the air-conditioning space S between the main beams. Then, an induction mixed radiation case 16 and a hood 13 that are emitted from a large number of apertures 9 toward the air conditioning space S between the main beams are provided.

  Inside the inductive mixing radiation case 16, the inductive mixing air is diverted to be rectified and guided to the inter-main-beam air conditioning space S through the opening 9, and the heat of the attraction mixing air is heated to the attraction mixing radiation case 16. There is provided a radiation rectifier 2 that conducts heat and radiates heat to the air-conditioning space S between the main beams and radiates heat to the air-conditioning space S between the main beams through the opening 9. The radiation rectifier 2 has a flat rectangular shape as a whole, and is brought into contact with at least one surface of the induction mixing radiation case 16 (the side facing the air conditioning space S between the main beams in the illustrated example) so as to be capable of conducting heat.

  The radiation rectifier 2 is made of a material having high heat conduction and thermal emissivity, and is provided with a large number of belt-like heat transfer plates 8 facing each other at a predetermined pitch, and the induced mixed air is diverted so that the gap between the heat transfer plates 8 and 8 is provided. Is configured to pass in a rectifying manner while transferring heat. A plurality of elliptical straight pipes 19 are inserted into each heat transfer plate 8 at intervals from the normal direction, and the elliptical long axis of the elliptical straight pipes 19 faces the air-conditioning space S between the main beams. Although the straight pipe 19 is elliptical in the example shown in the figure, it may be a perfect circle, or the hole in the portion of the heat transfer plate 8 where the straight pipe 19 is not inserted in the embodiment of FIG. 11 may be omitted. The shape, structure, etc. of the radiation rectifier 2 can be freely changed.

  The induced mixed air is rectified while reducing the wind speed while passing through the gap between the heat transfer plates 8 and 8 while diverging and diffusing due to the member resistance of the radiation rectifier 2 and the induction mixed radiation case 16, and the heat of the induced mixed air is radiated by the radiation rectifier. Heat is evenly transferred across the entire area. The opening 9 is formed at a distance from each other over substantially the entire area of the surface facing the inter-main-beam air-conditioned space S of the induction mixing radiation case 16. In the illustrated example, the opening 9 has a long hole shape, but it may be round or other shapes, and the position may be changed freely.

  The hood 13 has an opening 14 exposed to the air conditioning space S between the main beams. In the inside of the hood 13, a flat rectangular attracting and mixing radiation case 16 is disposed between a range from at least two opposing side surfaces of the peripheral side surface to the attraction port 10, and the hood 13 and the air supply unit 11. It installs so that the space | interval part 15 for induction air paths may be provided. The attracting and mixing radiation case 16 is configured to be openable / closable or detachable with respect to the hood 13. In the illustrated example, the spacing portion 15 is provided so as to wrap around the induction port 10 from both sides in the long side (longitudinal) direction of the attracting and mixing radiation case 16, but it is also arranged so as to wrap around from both sides in the short side direction. (All circumferences) Changes are free, such as providing an interval portion on all sides. Moreover, although the air inlet 18 of the air supply part 11 is provided in the end surface of the longitudinal direction of the food | hood 13, the position and number of the air inlets 18 can be changed freely.

  The induction mixing radiation case 16 is formed with an induction port 10 into which supply air for air conditioning of the air supply unit 11 is blown in a line shape along a central line L between the two opposing side surfaces forming the interval unit 15, An air outlet 12 through which air-conditioning air is blown out is formed in the air supply section 11 along the induction port 10 in a line shape. Although the air supply part 11 is made into the funnel shape narrowed toward the leeward from the windward, the change of the shape, structure, etc. of the air supply part 11 is free. The internal space of the air supply unit 11 is reduced from the windward side in the long side direction of the air outlet 12 toward the leeward side, and the air supply unit 11 is provided with a wind direction adjusting mechanism G that adjusts the wind direction. In the illustrated example, the interior of the air supply unit 11 is partitioned by the inclined plate 11a to reduce the internal space. However, the air supply unit 11 itself may be reduced or may be reduced by other methods.

  The wind direction adjusting mechanism G is formed by providing a plurality of small wall strip portions 7 extending in a direction intersecting with the air flow direction of the supply air at intervals. When there is no wind direction adjusting mechanism G, the air for supply flows obliquely as indicated by the thick dotted arrow in FIG. 10, but due to the resistance of the wind direction adjusting mechanism G, the air supply section 11 The wind direction can be adjusted in the direction perpendicular to the longitudinal direction. The width and height of the small wall strip 7 can be freely changed.

  As shown in FIG. 11, when the supply air is blown out from the air supply unit 11 and enters the induction mixing radiation case 16 as indicated by a solid thick arrow, the gap between the air outlet 12 and the air inlet 10 becomes negative pressure. Then, air in the air-conditioning space S between the main beams is attracted through the space 15 as indicated by a short dotted thick arrow, and is split and diffused while being mixed in the induced mixing radiation case 16 as indicated by a long thick dotted arrow. It is discharged into the inter-beam air-conditioned space S in a rectified manner. By repeating these steps, air is circulated and agitated between the air-conditioning space S between the main beams and the induced radiation unit. During cooling, air-conditioning is performed by induced mixed air having a temperature lower than that of the air-conditioning space S between the main beams and cold radiation, and during heating, air conditioning is performed by using induced mixed air having higher temperatures than the air-conditioning space S between the main beams and thermal radiation. The supply air is set so that the absolute humidity becomes lower than the dew point temperature of the air-conditioning space S between the main beams when it is attracted and mixed, for example, in order to prevent condensation and to improve the air conditioning efficiency. . As an example of the induced air mixing ratio that is optimal for air conditioning, the supply air volume: the induced volume is about 6: 4, but the setting can be changed freely.

  As shown in FIG. 13 to FIG. 17, the induction blow-off port 60 includes a main body 61 that attracts and mixes the air in the air-conditioning space S between the main beams with the supply air for air conditioning and blows the mixed air to the air-conditioning space S between the main beams. I have. The main body 61 includes a supply air introduction portion 68 having a spacing portion 62, and a blowing portion 69 having an air jet port 64, an induction port 65, a mixed air blowing air passage 66 and an induction air passage 67. The induction blower outlet 60 is provided in the ceiling C of the air conditioning space S between the main beams. Air conditioning air is supplied from the air conditioner 20 and / or the external air conditioner 40 through the air duct D to the induction blower outlet 60. In addition, the thick arrow of the dotted line in each figure of FIGS. 13-18 shows a wind direction.

  An annular space 62 is formed on the windward side of the main body 61. An air supply port 63 is provided so that supply air is sent in the circumferential direction of the interval portion 62. In the leeward direction of the interval portion 62, an air outlet 64 for reducing the passage cross-sectional area and increasing the wind speed and ejecting supply air is divided into a plurality of portions along the interval portion 62 in the circumferential direction. That is, the air jet port 64 is divided into a plurality of annular shapes in the main body 61, and the annular spacing portion 62 is formed along the air jet port 64 on the windward side of the air jet port 64 in the main body 61. In the lee of the air outlet 64, the inlet 65 is divided and arranged for each of the air outlets 64 so as to attract the air in the air-conditioning space S between the main beams by blowing the supply air ejected from the air outlet 64. A guide guide path 79 is provided between adjacent attracting openings 65 and circumferential ends of the attracting openings 65 so that the attracting air crosses the entire circumference of the attracting openings 65 in the radial direction.

  On the lee of the induction port 65, a mixed air blowing air passage 66 for guiding and guiding the mixed air of the supply air and the induction air to the air conditioning space S between the main beams is formed in a circular annular shape that expands from the leeward toward the leeward side. The induction air passage 67 that guides and guides the induction air from the main-beam air-conditioned space S to the induction port 65 is formed in an annular shape along the outer periphery of the mixed air blowing air passage 66. As a result, air is attracted from the outer side in the radial direction of the main body 61 and blown out from the inner side in the radial direction of the main body 61, so that the ceiling surface is not contaminated by the Coanda effect. Therefore, the ceiling surface is beautiful and maintenance-free. The mixed air blowing air passage 66 is provided with a guide portion 80 that guides and guides the mixed air to the conditioned space S between the main beams in a spiral shape. In the present invention, the term “annular” includes all shapes such as a ring shape, a cylindrical shape, and a flare shape.

  The blow-out portion 69 has a shade-shaped outer wall body 71 and an inner wall body 72 that are open on the air-conditioning space S between the main beams, and a shade-shaped body 73. The body 73 is provided in the inner wall 72 with a predetermined interval, and the inner wall 72 is provided in the outer wall 71 with a predetermined interval. An induction air passage 67 is formed by the inner surface of the outer wall body 71 and the outer surface of the inner wall body 72, and a mixed air blowing air passage 66 is formed by the inner surface of the inner wall body 72 and the outer surface of the body 73. The guide portion 80 of the mixed air blowing air passage 66 is formed by spirally forming a plurality of ridges on the outer surface of the body 73. Thereby, it can accelerate | stimulate that mixed air is swirled in a spiral shape, and blows off to the air-conditioning space S between main beams, and a diffusivity improves.

  The outer wall body 71, the inner wall body 72, and the body 73 are detachably connected by a connecting member such as a bolt and nut. An upwind portion of the mixed air blowing air passage 66 is provided inward in the axial direction of the main body 61 to lengthen the air passage. Inside the body 73, a detector 75 that detects the human body in the lighting fixture 74 and / or the air-conditioning space S between the main beams and outputs a signal is provided. One or both of the blown air volume and the lighting fixture dimming are controlled in accordance with the signal from the detector 75. In the example shown in the figure, the body 73 is hollow, but the structure may be such that the air-conditioning space S between the main beams is opened. The guide portion 80 is provided on the inner surface of the inner wall body 72 and / or the outer surface of the body 73. May be. Moreover, the structure of the guide part 80, the mixed air blowing wind path 66, and the induction wind path 67 and the change of a structure are free, and are not limited to the example of a figure.

  The supply air introduction unit 68 includes a casing 76 that opens on the side of the main beam air-conditioned space S, a bottomed cylindrical partition 77, and an air supply port 63. The partition body 77 is provided inside the housing 76 at a predetermined interval. A spacing portion 62 is formed by the inner surface of the casing 76 and the outer surface of the partition body 77. The air supply port 63 is provided in the casing 76 in an inscribed line shape so that the supply air flows spirally in the circumferential direction of the interval portion 62. Thus, since supply air turns spirally along the space | interval part 62 of the main body 61 and spreads over the perimeter, mixed air can be uniformly blown out to the air-conditioning space S between main beams, and a diffusivity does not fall. Furthermore, it can be made compact with a simple structure, does not take up space, has low pressure loss, prevents turbulent flow, and can be smoothly blown out, resulting in low noise.

  A blower 69 is connected to the supply air introduction part 68 so that the circumferential positions of the air outlet 64 and the induction port 65 can be changed, and a fixture V for fixing the supply air introduction part 68 and the blowout part 69 is provided. Provide. The fixing tool V is a bolt and nut member 70 slidable in the axial direction and the circumferential direction of the air outlet 64 and the induction port 65 through the leeward opening of the supply air introduction part 68 and the leeward opening of the outlet part 69. The shaft center part of the supply air introduction part 68 and the shaft center part of the blowing part 69 are connected to each other by a bolt and nut member 70 so as to be able to advance and retract. The supply air introduction part 68 is suspended and fixed in the ceiling, and adjustment of the gap W between the blowing part 69 and the ceiling and adjustment of the circumferential position of the air outlet 64 and the induction port 65 are performed by the bolt and nut member 70. In this way, the axial position adjustment and the circumferential position adjustment of the blow-out portion 69 can be easily performed by simply moving the bolt and nut member 70 forward and backward. For example, it can also be used for adjusting the gap between the ceiling C and the blowing portion 69 and adjusting the blowing direction. Moreover, the air flow distribution according to the heat load distribution of the air-conditioning space S between the main beams can be easily set by changing the circumferential position of the air outlet 64 and the induction port 65, and the air conditioning efficiency is improved and the comfort is improved. improves.

  In the illustrated example, a part of the outer wall body 71 of the blow-out portion 69 is slidably fitted to the opening portion of the casing 76 of the supply air introduction portion 68 so as to be slidable. 77 and the inner wall body 72 are connected by the fixing tool V, but the partition body 77 and the outer wall body 71 may be connected by the fixing tool V, and the configuration and structure can be freely changed, and limited to the illustrated example. Is not to be done. Further, the inner peripheral surface of the supply air introduction portion 68 is round, but may be polygonal, and the fixture V may be a mechanism, structure, or configuration other than the bolt nut member 70.

  The supply air sent to the supply air introduction portion 68 diffuses while rotating along the interval portion 62, passes through the air outlet 64, and is ejected toward the induction port 65. At that time, the gap between the air outlet 64 and the inlet 65 becomes a negative pressure, and the air in the air-spaced space S between the main beams is drawn through the air guide passage 67. The attraction air is sucked in from the entire circumference of the entrainment attraction port 65 through the induction guide path 79 and mixed with the supply air. Therefore, the ratio of the supply air flow rate to the induced air flow rate with respect to the mixed air blowing flow rate can be increased as 6: 4, for example. That is, since the attraction air can be attracted from the entire circumference of the attraction port 65, there is little pressure loss, and a large air volume (mixing ratio) of the attraction air with respect to the supply air volume can be secured. Therefore, the amount of air blown out from the mixed air can be increased, the diffusibility is improved, and temperature unevenness is eliminated.

  The mixed air is blown in four directions toward the inter-beam air-conditioned space S through the mixed air blowing air passage 66. For example, at the time of cooling, the mixed air blowing air passage 66 mixes the low-temperature supply air of 13 ° C. and the induction air of 27 ° C. that is higher than that, so that no condensation occurs. That is, since the low-temperature supply air and the induction air having a higher temperature are mixed and blown out inside the main body 61, it is possible to prevent the occurrence of dew condensation on the leeward side from the air outlet 64. Therefore, it is not necessary to insulate the induction port 65 and the mixed air blowing air passage 66, and the heat insulation processing range can be reduced, and the manufacture becomes easy. The supply air is set so that the absolute humidity is lower than the dew point temperature of the inter-beam air-conditioned space S when it is attracted and mixed, but the change is free.

  In addition, the increase / decrease in the division | segmentation number of the air outlet 64 and the induction port 65 is free, and FIG. 18 has shown the example divided into three. Thus, since the air outlet 64 and the inlet 65 are divided | segmented into the circumferential direction, a static pressure becomes small and an airflow arrival distance is extended, and diffusibility becomes favorable. Also, the blowing direction can be freely selected in two directions, three directions, four directions, and the like simply by changing the number of divisions in the circumferential direction of the air outlet and the inlet according to the layout of the air conditioning space S between the main beams. Although not shown, the induction air passage 67 and the mixed air blowing air passage 66 may be formed in a polygonal annular shape including a square that expands from the windward side toward the leeward side. In addition, the guide portion 80 may be omitted, and the air supply port 63 may be provided in a dividing line instead of an inscribed line.

  The present invention is not limited to the above-described embodiments, and the design can be freely changed without departing from the gist of the present invention. The external air conditioner 40 is omitted, and the mixed air of the return air and the outside air is heated by the coil 23 as air-conditioning air. The air conditioner 20 that is exchanged and supplied to the air conditioning space S between the main beams can be freely used. In addition, the arrangement and quantity of the induction radiation unit 1, the induction outlet 60, the air conditioner 20, and the external air conditioner 40 can be freely changed. Furthermore, the combination of communication connection of the induction radiation unit 1 and the induction blower outlet 60, the air conditioner 20 and the external air conditioner 40 is free, and either one of the induction radiation unit 1 and the induction blower outlet 60 is omitted. The other can be freely connected to the air conditioner 20 and the external air conditioner 40.

It is a simplified top view which shows a one span air conditioning system. It is a simplified side view of a one span air conditioning system. It is a top view of an air conditioner. It is a side view of an air conditioner. It is a side view of an external air handler. It is a front view of an external air conditioner. It is a perspective view of an attraction radiation unit. It is the figure which looked at the attracting radiation unit from the hood side. It is the figure which fractured | ruptured a part of attraction mixing radiation case and was seen from the attraction port side. It is sectional drawing of the attraction radiation | emission unit seen from the X direction of FIG. It is sectional drawing of the attraction | suction radiation | emission unit seen from the E direction of FIG. It is the perspective view which fractured | ruptured a part of upper surface of an air supply member. It is the whole view which looked at the induction blower outlet from the supply air introduction part side. It is AA sectional drawing of FIG. It is BB sectional drawing of FIG. It is the whole view seen from the blowing part side. It is the whole fuselage figure seen from the supply air introducing | transducing part side which abbreviate | omitted one part. It is sectional drawing which shows the modification of the blowing part which abbreviate | omitted one part.

1 Induction radiation unit 20 Air conditioner
23 Coil 40 External air conditioner 43 Coil 60 Induction air outlet S Air conditioning space between main beams R Control means

Claims (9)

  A one-span air-conditioning system that air-conditions each main-beam air-conditioned space, and has a coil that heat-exchanges only return air or a mixture of return air and outside air as air-conditioning air and supplies this air-conditioning air to the main-beam air-conditioned space One-span air-conditioning system characterized by having an air-conditioning machine.   A one-span air-conditioning system that air-conditions each air-conditioned space between main beams, including an air-conditioning unit that has a coil that heat-exchanges return air as air-conditioning air and supplies the air-conditioning air to the air-conditioning space between main beams, and air-conditioning air A one-span air-conditioning system comprising a coil for heat-exchanging outside air and an air conditioner that supplies the air-conditioning air across a plurality of air-conditioning spaces between the main beams.   A one-span air-conditioning system that air-conditions each air-conditioned space between main beams, including an air-conditioning unit that has a coil that heat-exchanges return air as air-conditioning air and supplies the air-conditioning air to the air-conditioning space between main beams, and air-conditioning air A one-span air-conditioning system comprising a coil that exchanges heat between the return air and the outside air so that the air volume can be adjusted, and supplies the air-conditioning air across the plurality of air-conditioning spaces between the main beams. .   An induction radiation unit that induces and mixes the air in the air-conditioned space between the main beams with the supplied air-conditioning air, blows the air into the air-conditioned space between the main beams in a rectified manner, and radiates the heat of the induced mixed air to the air-conditioned space between the main beams; The one-span air conditioning system according to claim 1, 2 or 3.   The one-span air conditioning system according to claim 1, 2, 3, or 4, further comprising an attraction air outlet for attracting and mixing the air in the air conditioning space between the main beams with the supplied air conditioning air and blowing the air to the air conditioning space between the main beams.   The one-span air-conditioning system according to claim 4, further comprising control means for turning on and off the operation of the air conditioner in units of air-space between the main beams.   The one-span air conditioning system according to claim 1, 2, 3, 4, 5 or 6, wherein the heat transfer tube of the coil is an elliptic tube.   The air-conditioning air is cooled and heated with cold / hot water, and the air-cooling coil is cooled and heated. When air is cooled, the coil inlet heat source water temperature is 10-12 ° C., the coil inlet / outlet water temperature difference is 8-10 ° C., and the air-conditioning air temperature is supplied. In addition to setting to 12 to 14 ° C., at the time of air heating, the coil inlet heat source water temperature is set to 35 to 40 ° C., the coil inlet / outlet water temperature difference is set to 8 to 10 ° C., and the air conditioning air temperature to be supplied is set to 32 to 37 ° C. Item 8. The one-span air conditioning system according to item 1, 2, 3, 4, 5, 6 or 7.   The one-span air-conditioning system according to claim 1, 2, 3, 4, 5, 6 or 7, wherein the air-conditioning air is a directly expanded coil that exchanges heat with a refrigerant so that it can be switched between cooling and heating.

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