JP4494930B2 - Ceiling radiation system - Google Patents

Description

  The present invention relates to a ceiling radiation system that cools a room with radiant heat, and more particularly, to a ceiling radiation system that causes cold water to flow through a heat radiating pipe disposed near the ceiling surface of the room.

  Currently, the mainstream cooling system cools the air sucked from the room or the outside and supplies it to the room, which is unnatural to the human body because the room temperature does not correspond to the amount of radiant heat. Therefore, a cooling system has been developed that cools the room by radiant heat by flowing cold water through a heat radiating pipe disposed in the room.

As such a cooling system, a heat radiation pipe is arranged in a wall shape, a wall-like radiation system in which a drain for receiving condensed water is disposed below (for example, see Non-Patent Document 1), or a heat radiation pipe near the ceiling surface. There is a ceiling radiation system arranged horizontally (see, for example, Non-Patent Documents 2 and 3).
“Dehumidifying Radiant Cooling and Heating System”, PS Corporation, [October 04, 2004 search] Internet <URL: http://www.ps-group.co.jp/products/hr_c.html> "Radiation cooling / heating (radiant cooling / heating / ceiling cooling / heating)-TOYOX", Toyox, Inc. [Search October 04, 2004] Internet <URL: http://www.toyox.co.jp/fukusha/fukusha06.html> “Research on Radiant Cooling and Heating in Residential Houses”, Hokuriku Electric Power, [Search October 04, 2004] Internet <URL: http://www.rikuden.co.jp/kenkyu/news/news07/news0702.htm>

  However, since the wall-shaped radiation system needs to be arranged indoors, the indoor space is consumed. Of course, since the cooling effect changes depending on the distance from the wall-shaped radiation system, it is difficult to cool the room uniformly.

  On the other hand, the ceiling radiation system does not consume indoor space and can cool the room substantially uniformly. However, in the ceiling radiation system, when cold water that has been sufficiently cooled is caused to flow into the heat radiating pipe, condensation occurs and water drops fall into the room.

  For this reason, in some ceiling radiation systems, the temperature of the chilled water is controlled within a range where condensation does not occur, but this cannot sufficiently cool the room. Further, in a certain ceiling radiation system, a single tray is arranged below a plurality of heat radiating tubes, and water droplets condensed on the tray are received. However, the cooling effect by the plurality of radiating tubes is hindered by the tray. It will be.

  The present invention has been made in view of the above-described problems, and an object thereof is to provide a ceiling radiation system that can sufficiently cool a room with good efficiency.

A ceiling radiation system of the present invention is a ceiling radiation system that performs cooling at least by flowing at least cold water to a heat radiating pipe disposed in the vicinity of a ceiling surface of a room, and includes a plurality of heat radiating pipes, a cold water generating mechanism, and a cold water flow It has a mechanism, a plurality of heat radiation plates formed on each heat radiation pipe, and a plurality of drains. The plurality of heat radiating pipes are arranged horizontally below the ceiling surface, and the heat radiating plate and the heat radiating plate are arranged exposed in the room . The cold water generation mechanism generates cold water, and the cold water flow mechanism causes the generated cold water to flow through the plurality of heat radiating tubes. The temperature of the cold water generated by the cold water generating mechanism is a temperature at which dew condensation occurs on the heat radiating pipe and the heat radiating plate as the cold water flows through the heat radiating pipe. The plurality of heat radiating plates are formed downward from the outer surface of each of the plurality of heat radiating tubes, and the plurality of drains are formed in an elongated bowl shape having a width wider than the heat radiating tube and open on the upper surface. Is arranged.

  Therefore, in the ceiling radiation system of the present invention, when the cold water generated by the cold water generating mechanism flows into the plurality of heat radiating pipes by the cold water flow mechanism, the room is cooled by the heat radiation of the heat radiating pipes and the heat radiating plates. When sufficiently cooled cold water is flowed, moisture is condensed on the surfaces of the heat radiating pipe and the heat radiating plate, and the condensed moisture is collected by the drain.

  Note that the various constituent elements referred to in the present invention do not necessarily have to be independent of each other, and a plurality of constituent elements are formed as one member, and one constituent element includes a plurality of members. It is also possible that a certain component is a part of another component, a part of a certain component overlaps a part of another component, and the like.

  In the ceiling radiation system of the present invention, since the heat radiating plates are mounted on both sides of each of the plurality of heat radiating tubes, the heat radiation performance of the heat radiating tubes can be improved by the heat radiating plates. Drains are located below each of them, and moisture condensed on the heat radiating pipe and the heat radiating plate can be reliably collected by the drain. In addition, since the air cooled by the heat radiating pipe and the heat radiating plate can be circulated through the gap between the drains into the room, the room can be cooled with good efficiency.

[Configuration of the embodiment]
An embodiment of the present invention will be described below with reference to the drawings. As shown in FIG. 3, the ceiling radiation system 1000 of this embodiment includes a ceiling unit 100, a cold water generation mechanism 200, a pump device 300 that is a cold water flow mechanism, and the like. As shown in FIG. 2, it includes a plurality of heat radiating pipes 110, a water supply pipe 120, a collection pipe 130, a plurality of heat radiating plates 140, a plurality of drains 150, and the like.

  The water supply pipe 120 and the recovery pipe 130 are made of, for example, an elongated copper pipe having an outer shape of “30 (mm)” and a thickness of “2.0 (mm)”, and are formed to have a predetermined total length corresponding to the ceiling surface. ing. The heat radiating pipe 110 is made of, for example, an elongated copper pipe having an outer diameter of “20 (mm)” and a thickness of “2.0 (mm)”, and is also formed to have a predetermined overall length corresponding to the ceiling surface.

  The plurality of heat radiating pipes 110 are arranged in parallel in the left-right direction, which is the Y direction, in a state where the longitudinal direction is parallel to the front-back direction, which is the X direction. Are arranged in parallel in the front-rear direction, which is the X direction, in a state parallel to the left-right direction, which is the direction. In this state, one end of each of the plurality of heat radiating pipes 110 is connected to the water supply pipe 120 and the other end is connected to the recovery pipe 130, so that the water supply pipe 120, the recovery pipe 130, and the plurality of The heat radiating tube 110 is assembled in a so-called ladder shape.

  The heat radiating plate 140 is made of, for example, an elongated copper plate having a thickness of “2.0 (mm)” and a horizontal width of “20 (mm)”, and is formed to have the same total length as the heat radiating tube 110. The heat radiating plate 140 is individually mounted with the upper edge portions of the heat radiating plate 140 by welding or the like at the left and right ends of the outer peripheral surface of the heat radiating tube 110.

  The drain 150 is made of, for example, an elongated aluminum material having a V-shaped cross section, and is disposed in a bowl-like state with an open upper surface. The drain 150 has a horizontal width of “40 (mm)” that is twice that of the heat radiating pipe 110 on the upper surface of the opening, and is formed to have the same length as the heat radiating pipe 110.

  The plurality of drains 150 are individually arranged substantially in parallel below the plurality of heat radiating tubes 110 in a state in which one end is slightly inclined so that one end is located above the other end. Note that, for example, a bowl-shaped drain pipe (not shown) having an upper surface opened is disposed at a position facing the other end of each of the plurality of drains 150 from below. Is formed.

  As shown in FIG. 3, the water supply pipe 120 and the recovery pipe 130 are connected to an outdoor underground tank 310 by communication pipes 121 and 131, and a pump is connected to the communication pipe 121 that connects the underground tank 310 and the water supply pipe 120. The device 300 is connected. The underground tank 310 is embedded in an outdoor basement with good heat insulation and stores water.

The cold water generating mechanism 200 includes a heat exchanger 210 and a heat pump 220, and a cooling pipe 221 that cools and circulates a refrigerant (not shown) is connected to the heat pump 220.
Since this cooling pipe 221 communicates with the heat exchanger 210 together with the communication pipe 121, in this heat exchanger 210, the water flowing through the communication pipe 121 is cooled by the refrigerant flowing through the cooling pipe 221. Further, the cooling pipe 221 is also connected to the indoor dehumidifier 230, and in this dehumidifier 230, ambient air is dehumidified by the refrigerant flowing through the cooling pipe 221.

  Further, as shown in FIG. 2, the ceiling unit 100 has two electromagnetic valves 111 inserted into three of the plurality of heat radiating pipes 110, and the electromagnetic valve 111 includes the cold water generation mechanism 200 and the pump device 300. In addition, it is connected to a control circuit (not shown). A control panel (not shown) is connected to this control circuit, and this control panel is arranged indoors.

  This control panel accepts input operations of “ON / OFF” and “strong / medium / weak” here, and when “ON” is input, the cold water generating mechanism 200 and the pump device 300 are driven by the control circuit. Is done. In this state, when “strong” is input, all the solenoid valves 111 are opened, the driving state of the cold water generating mechanism 200 and the pump device 300 is “strong”, and “medium” is the input operation. Then, one of the two solenoid valves 111 is closed, the driving state of the cold water generating mechanism 200 and the pump device 300 is set to “medium”, and when “weak” is input, all the solenoid valves 111 are operated. Is closed and the driving state of the cold water generating mechanism 200 and the pump device 300 is “weak”.

[Operation of the embodiment]
In the configuration as described above, in the ceiling radiation system 1000 of the present embodiment, as shown in FIG. 3, the water stored in the underground tank 310 is supplied from the communication pipe 121 to the ceiling unit 100 by the pump device 300. Water is collected from the ceiling unit 100 to the underground tank 310 through the communication pipe 131. At that time, since the cold water generation mechanism 200 cools the flowing water in the communication pipe 121, the cold water is supplied to the ceiling unit 100.

  In the ceiling unit 100, cold water is supplied from the water supply pipe 120 to the plurality of heat radiating pipes 110 in parallel, and the cold water is collected from the plurality of heat radiating pipes 110 to the recovery pipe 130 in parallel. Since the heat radiating plate 140 is individually attached to each of the plurality of heat radiating tubes 110, the room is cooled by heat radiation of the heat radiating tube 110 and the heat radiating plate 140.

  In the ceiling radiation system 1000 of this embodiment, moisture is condensed on the surfaces of the heat radiating pipe 110 and the heat radiating plate 140 by flowing cold water that has been sufficiently cooled basically, but the condensed water is collected by the drain 150. . Moreover, since the cooling pipe 221 of the heat pump 220 of the cold water generation mechanism 200 is also connected to the indoor dehumidifier 230, the indoor air is dehumidified by the dehumidifier 230.

  Further, in the ceiling radiation system 1000 of this embodiment, the temperature and flow velocity of the cold water flowing through the heat radiating pipe 110 are always maintained constant, but when “strong” is input on the control panel, a plurality of heat radiating pipes 110 are connected. Cold water flows through all, and when “middle” is input, cold water flows to “2/3”, and when “weak” is input, cold water flows to “1/3”.

[Effect of the embodiment]
In the ceiling radiation system 1000 of the present embodiment, the heat radiating plate 140 is attached to each of the plurality of heat radiating tubes 110 arranged under the ceiling in the room as described above. The room can be cooled by heat radiation. In particular, in the ceiling radiation system 1000 of this embodiment, since the plurality of heat radiating pipes 110 are connected in parallel to the water supply pipe 120 and the recovery pipe 130, cold water can flow through the plurality of heat radiating pipes 110 substantially uniformly. The room can be evenly cooled.

  In addition, in the ceiling radiation system 1000 of the present embodiment, the cooled water is made to flow through the heat radiating pipe 110, so that the room can be well cooled. When cold water that has been sufficiently cooled is flowed in this way, moisture is condensed on the surfaces of the heat radiating pipe 110 and the heat radiating plate 140, and the condensed water is collected to the outside by the drain 150. There is no such thing as falling.

  Nevertheless, as shown in FIG. 4, since the drains 150 are arranged at a predetermined interval, the air cooled by the heat radiating pipe 110 and the heat radiating plate 140 can freely circulate from the gap between the drains 150, Can be cooled with good efficiency. In particular, since the heat radiating plate 140 is formed downward from both the left and right sides of the heat radiating tube 110, the condensed moisture can be guided well to the lower drain 150, and the air at the position flowing through the gap of the drain 150 is good. Can be cooled to.

Moreover, cold water generating mechanism 200 to generate cold water supplied to the ceiling unit 100, the cooling pipe 221 of the heat pump 220 is piped to the dehumidifier 230 of the chamber by one of the heat pump 220, cold water Both generation and indoor dehumidification can be performed.

  Further, in the ceiling radiation system 1000 of this embodiment, the ratio of the heat radiating pipe 110 that flows cold water is controlled by an input operation, and the outputs of the cold water generation mechanism 200 and the pump device 300 are also controlled correspondingly. With a simple structure, it is possible to adjust the cooling strength appropriately and quickly.

  In addition, when the present inventor actually manufactured the ceiling radiation system 1000 as described above and tested the cooling function, the room can be cooled to an appropriate temperature even when the outside air is very hot. It was confirmed that the room temperature can be maintained substantially constant even when the temperature is raised or lowered.

[Modification of Embodiment]
The present invention is not limited to the present embodiment, and various modifications are allowed without departing from the scope of the present invention. For example, in the above embodiment, the ceiling radiation system 1000 exemplifies that only cooling is performed by flowing cold water through the heat radiating pipe 110. However, heating can be performed by flowing hot water through the heat radiating pipe 110.

  Further, in the above embodiment, the plurality of heat radiating pipes 110 are connected in parallel to the water supply pipe 120 and the recovery pipe 130, so that cold water can flow substantially uniformly in the plurality of heat radiating pipes 110 to uniformly cool the room. Although illustrated, for example, a plurality of heat radiating pipes 110 can be connected continuously to allow cold water to flow sequentially (not shown).

  Further, in the above embodiment, the drain 150 is exemplified by only the aluminum material, but diatomaceous earth can be applied to the lower surface of the drain 150. In this case, environmental hormones and the like can be adsorbed by diatomaceous earth, and the lower surface of the drain 150 that becomes a dead space can be effectively used. Furthermore, since the lower surface of the drain 150 having good thermal conductivity can be insulated by diatomaceous earth, it is possible to prevent moisture from condensing on the lower surface of the drain 150.

  In the above embodiment, the drain 150 is exemplified to have a V-shaped cross-sectional shape. However, the drain 150 may have a U-shaped or U-shaped cross-sectional shape (not shown). Further, since the metal drain 150 has a high reflectance on the lower surface, for example, it is not impossible to arrange a light source below the drain 150 and use the lower surface of the drain 150 as a reflector for illumination. However, since the possibility of condensation increases when the lower surface of the drain 150 for collecting moisture is heated, a light source that does not generate heat such as a cold cathode tube is suitable.

  Further, in the above embodiment, the drain 150 is entirely inclined, but a U-shaped cover (not shown) whose lower surface is not inclined is individually attached to each drain 150 from below. It is also possible to do so. In this case, since a horizontal plane is formed by the lower surfaces of the plurality of drains, the overall appearance of the ceiling unit viewed from below can be improved.

  In the above embodiment, it is assumed that the water pipe 120 and the recovery pipe 130 are also exposed in the room. For example, as shown in FIG. 5, the water pipe 120 is connected to one end of the heat radiating pipe 110 with a box-shaped water cover 122. In addition, it is possible to improve the appearance of the ceiling unit 100 by shielding it from below and shielding the collection pipe 130 together with the other end of the heat radiating pipe 110 by a box-shaped collection cover 132. As shown on the left side of FIG. 5, the ceiling 10 may have a convex portion 11 formed on the outer peripheral portion, so that the water supply / recovery cover 122, the convex portion 11 and the bottom surface being flush with each other. If 132 is arranged, the appearance of the ceiling unit 100 can be further improved.

  Furthermore, although the fixing method of each pipe | tube 110-130 and the drain 150 is not specified in the said form, the some drain 150 inserted by the water supply cover 122 and the collection | recovery cover 132 as mentioned above is hold | maintained individually, for example. By forming the holding holes 123 and 133, the drain 150 can be held at an appropriate position with a simple structure.

  In the above embodiment, the heat radiating plate 140 is illustrated as a simple flat plate. For example, as shown in FIG. 6A, a large number of through holes 141 are formed in the heat radiating plate 140. It is also possible. In this case, the heat radiation performance can be improved by increasing the surface area of the heat radiating plate 140, the weight of the ceiling unit 100 disposed above the room can be reduced, and the ceiling unit 100 can be obtained by using the through hole 141. Can be suspended easily and securely below the ceiling.

  However, in the through-hole 141 whose lower part is closed as described above, there is a possibility that condensed moisture may adhere to the lower part of the inner peripheral surface. If this becomes a problem, the case shown in FIG. As shown, it is preferable to form a large number of concave grooves 142 that open downward in the heat radiating plate 140.

  Also in this case, the heat radiation performance can be improved by increasing the surface area of the heat radiating plate 140, the weight of the ceiling unit 100 disposed above the room can be reduced, and the ceiling unit can be obtained by using the concave groove 142. It is possible to suspend 100 under the ceiling surface easily and reliably.

It is a perspective view which shows the principal part of the ceiling unit of the ceiling radiation system of embodiment of this invention. It is a top view which shows the principal part of a ceiling unit. It is a mimetic diagram showing the whole ceiling radiation system. It is a vertical front view which shows the principal part of a ceiling unit. It is a vertical side view which shows the principal part of the ceiling radiation system of a 1st modification. It is a perspective view which shows the principal part of the ceiling radiation system of the 2nd, 3rd modification.

Explanation of symbols

DESCRIPTION OF SYMBOLS 110 Radiation pipe 120 Water supply pipe 130 Recovery pipe 140 Radiation plate 150 Drain 200 Cold water generation mechanism 300 Pump apparatus which is a cold water flow mechanism 1000 Ceiling radiation system

Claims (6)

A ceiling radiation system for performing cooling at least by flowing at least cold water to a heat radiating pipe disposed in the vicinity of an indoor ceiling surface,
A plurality of the heat dissipating tubes arranged horizontally below the ceiling surface;
A cold water generating mechanism for generating the cold water;
A cold water flow mechanism for causing the generated cold water to flow through the plurality of heat radiation pipes;
A plurality of radiator plates formed downward from the outer surface of each of the plurality of radiator tubes;
A plurality of drains which are wider than the heat radiating pipe and are formed in an elongated bowl shape having an upper surface opened and individually disposed below the heat radiating pipe;
Have,
The radiator pipe and the radiator plate are arranged exposed in the room,
The cold water generating mechanism is a ceiling radiation system that generates cold water having a temperature that causes condensation on the heat radiating pipe and the heat radiating plate when cold water flows in the heat radiating pipe . Further comprising a water supply pipe connected to one end of the heat dissipating tube several, a recovery pipe connected to the other end of the plurality of the heat radiation tube, a,
The ceiling radiation system according to claim 1, wherein the cold water flow mechanism supplies the cold water to the water pipe and collects the cold water from the recovery pipe. A water supply cover that shields at least the lower end and with said water tube of the heat dissipation tube, wherein the collecting cover that shields at least the lower the other end and with said recovery tube of the heat dissipation tube further comprises and a And
The ceiling radiation system according to claim 2, wherein a plurality of holding holes for individually holding the drains to be inserted are formed in the water supply cover and the recovery cover. One end of each of the plurality of drains is located above the other end,
The ceiling radiation system according to any one of claims 1 to 3, further comprising a drain pipe for discharging drainage flowing out from the other ends of the plurality of drains to the outside of the room. Each of the plurality of drains has an upper surface formed with one end positioned above the other end and a lower surface formed in a horizontal shape,
The ceiling radiation system according to any one of claims 1 to 3, further comprising a drain pipe for discharging drainage flowing out from the other ends of the plurality of drains to the outside of the room.   The ceiling radiation system according to any one of claims 1 to 5, wherein the drain is made of metal and diatomaceous earth is applied to a lower surface thereof.

Images