JP4714935B2 - Ice heat storage device - Google Patents

Description

  The present invention relates to an ice heat storage device that operates a cooling device by using nighttime electric power, converts water into ice, accumulates cooling energy due to the latent heat, and can use the ice as a cooling source.

  Conventionally, a so-called ice heat storage device is provided with, for example, a rectangular ice heat storage tank that opens upward, and near the upper end opening of the ice heat storage tank, along the inside of a pair of sides parallel to each other, A return-side main pipe is provided. One end of the supply side main pipe and the return side main pipe is closed, and the other end is inserted outside through the side surface of the ice heat storage tank. The supply side main pipe is connected to the supply fixed pipe and connected to the antifreeze outlet of the heat exchanger that cools the antifreeze liquid, and the return side main pipe is connected to the return fixed pipe and connected to the antifreeze liquid inlet of the heat exchanger It is connected to the.

The supply-side main pipe is provided with connecting through holes at predetermined intervals, and the supply-side main pipe is connected to the through-holes. A plurality of thin heat exchange pipes are integrally connected to the supply side main pipe, and the tip of the heat exchange pipe passes through the ice heat storage tank and is connected to the return side main pipe. The return side main pipe is further inserted into a connection through hole provided in the return side main pipe.
JP 2000-97455 A JP 2001-241704 A

  In the case of the above-described conventional technology, when the supply side main pipe and the return side main pipe are arranged inside the ice heat storage tank, the size of the ice heat storage tank is reduced by that amount even though the heat exchange pipe is not located there. There was a problem that it became large and installation efficiency was poor. On the other hand, when the supply side main pipe and the return side main pipe are arranged above the ice heat storage tank, when replacing the heat exchange pipe together with the main pipe, the supply side main pipe and the return side main pipe cannot be replaced unless they are removed. There was a problem. In addition, each main pipe is directly fixed to the supply side main pipe and the return side main pipe, so when removing the main pipe when replacing the heat exchange pipe, the supply side main pipe and the return side main pipe are also in the ice heat storage tank. It was a structure that had to be removed.

  Therefore, it is not possible to freely remove or attach only some heat exchange pipes and main pipes, repairing the heat exchange pipes and main pipes is time consuming, requiring time and man-hours for maintenance, and inconvenient. It was.

  In order to improve the thermal efficiency of the ice heat storage device, it is preferable to install more thin heat exchange pipes and flow antifreeze liquid, but the smaller the heat exchange pipes, the more uniformly the heat exchange pipes. It was difficult to flow antifreeze.

  The present invention has been made in view of the above-described problems of the prior art, and an object thereof is to provide an ice heat storage device that can easily perform maintenance of a heat exchange pipe and has good heat exchange efficiency. And

The present invention comprises an ice heat storage tank having heat insulation, a supply side main pipe and a return side main pipe installed above the opening of the ice heat storage tank and circulating antifreeze liquid to the ice heat storage tank, The interval between the pipe and the return side main pipe is set to be about 1/2 to slightly wider than the width of the side surface of the ice heat storage tank positioned perpendicular to the supply side main pipe and the return side main pipe. A supply main pipe and a return main pipe which are installed under the supply side main pipe and the return side main pipe and are formed to be shorter than an interval between the supply side main pipe and the return side main pipe; A large number of heat exchange pipes connected to both sides of the main pipe and the side of the return main pipe and connected to the vicinity of the bottom of the ice heat storage tank, and the supply side main pipe and the supply main pipe communicate with each other. Supply port And a return port connecting pipe for communicating the return side main pipe and the return main pipe. The supply main pipe, the return main pipe, and the heat exchange pipe connected therebetween are integrated. As the heat exchange pipe mat, in the heat exchange pipe mat, the longitudinal direction of the main pipe for supply and the main pipe for return is parallel, and both ends in the longitudinal direction of the main pipe for supply and the main pipe for return are Substantially aligned in a direction perpendicular to the longitudinal direction and set to a width narrower than about ½ of the width of the side surface of the ice heat storage tank positioned perpendicular to the supply-side main pipe and the return-side main pipe, located substantially perpendicular to the supply-side main pipe and the return-side main pipe, the heat exchange pipe mat was possible out from between the back side main pipe and the supply-side main pipe ice It is the thermal equipment.

  Further, a plurality of connectors are provided on side surfaces of the supply side main pipe and the return side main pipe, the supply port connecting pipe is connected to the connector of the supply side main pipe, and the connector of the return side main pipe Is connected to the return port connecting pipe, and each connecting pipe is detachably connected to each connector.

The heat exchange pipe mat is several Installation in two rows along the back side main pipe and the supply-side main pipe. The supply port connecting pipes are provided so that a pair protrudes in opposite directions from the supply side main pipe, and are connected to the supply main pipes of the heat exchange pipe mats installed in two rows, A pair of return port connecting pipes are provided so as to protrude in opposite directions from the return side main pipe, and are respectively connected to the return main pipes of the heat exchange pipe mats installed in two rows. .

  In the ice heat storage device of the present invention, the heat exchange pipe mat can be attached / detached for each heat exchange pipe mat or each module in which a plurality of them are combined without moving the supply side main pipe or the return side main pipe main pipe. Yes, maintenance is easy. And since the length of the main pipe for supply and the main pipe for return is formed short, the circulation of the antifreeze liquid is uniform for each heat exchange pipe and the heat exchange efficiency is good. Furthermore, according to the structure of Claim 2, the exchange operation | work of a heat exchange pipe mat becomes easier.

  According to claim 3 of the present invention, the heat exchange pipe mats are arranged in two rows so that a large number of heat exchange pipes can be provided efficiently, and the heat exchange pipe mat can be easily replaced. Furthermore, according to the structure of claim 4, since a plurality of pairs of the supply port connecting pipe and the return port connecting pipe are provided on both sides of the supply side main pipe or the return side main pipe, two rows of heat exchanges are provided. Antifreeze can be poured evenly over the pipe mat.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 to 3 show an embodiment of the present invention, and an ice heat storage device 10 of this embodiment is provided with an ice heat storage tank 12 that is formed in a square tube shape and opens upward. The ice heat storage tank 12 has a heat insulating structure.

  On one side surface 12a of the ice heat storage tank 12, a supply side main pipe 14 is inserted in the vicinity of the upper opening portion of the ice heat storage tank 12 in the vicinity of the corner with the other side surface 12b adjacent at right angles. . The supply-side main pipe 14 is inserted at a substantially right angle with respect to the side surface 12 a and is positioned substantially parallel to the side surface 12 b in the ice heat storage tank 12. And the front-end | tip of the supply side main piping 14 reaches the inner side vicinity of the side surface 12c located at right angles to the side surface 12b, and is closed. Further, a return side main pipe 16 is inserted into the side face 12c of the ice heat storage tank 12 at a height substantially the same as the supply side main pipe 14 in the vicinity of the corner with the side face 12d adjacent at right angles. . The return-side main pipe 16 is inserted at a substantially right angle with respect to the side surface 12 c and is positioned substantially parallel to the side surface 12 d in the ice heat storage tank 12. And the front-end | tip of the return side main piping 16 reaches the inner side vicinity of the side surface 12a, and is closed. The supply side main pipe 14 and the return side main pipe 16 are positioned above the ice heat storage tank 12 and supported by a fixing member (not shown) provided on the inner surface of the ice heat storage tank 12. The interval between the supply-side main pipe 14 and the return-side main pipe 16 is set to be about ½ or slightly wider than the width of the side surface 12 c of the ice heat storage tank 12.

  The supply-side main pipe 14 is provided with a connector 20 that communicates the inside and outside of the supply-side main pipe 14 at the portion facing the side surface 12b. A plurality of connectors 20 are attached at equal intervals along the longitudinal direction of the supply-side main pipe 14, and a supply port connection pipe 22 connected to a supply main pipe 36 described later is detachably connected. In addition, a connector 24 that communicates the inside and outside of the supply-side main pipe 14 is also provided at a portion of the supply-side main pipe 14 opposite to the connector 20. The connector 24 is attached along the longitudinal direction of the supply-side main pipe 14 with the same number as the connector 20 at the same interval, and a supply port connection pipe 26 connected to a supply main pipe 42 described later is detachably connected. Yes.

  The return side main pipe 16 is provided with a connector 28 that communicates the inside and outside of the return side main pipe 16 at a portion facing the side surface 12d. The same number of connectors 28 as the connectors 20 of the supply side main pipe 14 are attached at the same interval along the longitudinal direction of the return side main pipe 16. A return port connecting pipe 30 connected to a return main pipe 44, which will be described later, is detachably connected to the connector 28. A connector 32 that communicates the inside and outside of the return side main pipe 16 is also provided on the part of the return side main pipe 16 opposite to the connector 28. The connector 32 is attached along the longitudinal direction of the return side main pipe 16 with the same number as the connector 28 and the same interval, and a return port connecting pipe 34 connected to a return main pipe 38 to be described later is detachably connected. Yes.

  The ice storage tank 12 is provided with a virtual boundary line between the supply-side main pipe 14 and the return-side main pipe 16 so as to be divided into two equal parts. Main pipes 36 for return and main pipes 38 for return are arranged alternately in parallel with each other. The supply main pipe 36 and the return main pipe 38 are installed substantially at right angles to the supply-side main pipe 14, and are slightly shorter than about ½ of the width of the side surface 12 a of the ice heat storage tank 12. The distance between the side main pipe 14 and the return side main pipe 16 is shorter. Thereby, it is possible to easily take in and out from between the supply side main pipe 14 and the return side main pipe 16.

  Further, the supply main pipe 36 is provided with a supply port 37 by bending the end of the ice heat storage tank 12 on the side surface 12b side upward, and the supply port connecting pipe 22 is detachably connected to the supply port 37. The supply-side main pipe 14 is communicated. The end of the supply main pipe 36 on the side surface 12d side is closed. On the other hand, the end portion on the side surface 12b side of the return main pipe 38 is closed, and the end portion on the side surface 12d side is bent upward to be provided with a return port 39. The return port 39 has a return port connecting pipe 34. Are detachably connected and communicated with the return-side main pipe 16.

  The supply main pipe 36 is provided with a thin heat exchange pipe 40 that hangs at a substantially right angle with respect to the supply main pipe 36 at equal intervals along the longitudinal direction in a portion facing the lower side in use. It has been. As shown in FIG. 2, the heat exchange pipe 40 is bent slightly in two directions in the vicinity of the supply main pipe 36 and extends downward, folded back in the vicinity of the bottom 12 e of the ice heat storage tank 12, and adjacent to the return main pipe 40. The pipe 38 is slightly bent again in the vicinity of the pipe 38 and connected to a portion facing the lower side of the return main pipe 38.

  The arrangement of the heat exchange pipes 40 is set at equal intervals by holding members 18 and spacers 19 as shown in FIG. 4 so that efficient ice formation and heat exchange are possible. The holding member 18 is formed of a flat plate-like member, and grooves 50 for positioning one row of the heat exchange pipes 40 and shallow holding recesses 54 provided between the grooves 50 are provided on both side edges along the longitudinal direction. It has been. Furthermore, a holding recess 52 that holds the heat exchange pipe 40 is also formed at the bottom of the groove 50. And each holding | maintenance recessed part 52 and the holding | maintenance recessed part 54 of the opposite side edge are mutually arrange | positioned by 1 pitch so that it may mutually oppose. The holding member 18 holds the arrangement of the two rows of heat exchange pipes 40 at equal intervals, and enables efficient ice formation and heat exchange.

  The holding member 18 is provided corresponding to the pair of main supply pipes 36 and the return main pipe 38, and both end sides of one heat exchange pipe 40 are held on both side edges of the holding member 18, respectively. The heat exchange pipe 40 connected to the main pipe 36 and the return main pipe 38 is held by the same holding member 18. Moreover, the space | interval of adjacent heat exchange pipes 40 is hold | maintained by the spacer 19 as shown in FIG. In the spacer 19, a holding recess 56 is formed on one side edge, and is held in one row of the heat exchange pipe 40 to maintain a distance from each other.

  Further, the ice heat storage tank 12 is also provided with supply main pipes 42 and return main pipes 44 that are alternately arranged in parallel with each other at a portion below the return side main pipe 16. The supply main pipe 42 and the return main pipe 44 are installed substantially at right angles to the return side main pipe 16, and are slightly shorter than about ½ of the width of the side surface 12 a of the ice heat storage tank 12. The distance between the side main pipe 14 and the return side main pipe 16 is shorter. Accordingly, it is possible to easily take in and out between the supply side main pipe 14 and the return side main pipe 16.

  Further, the supply main pipe 42 is provided with a supply port 43 by bending the end of the ice heat storage tank 12 on the side surface 12b side upward, and the supply port connection pipe 26 is detachably connected to the supply port 43. The supply-side main pipe 14 is communicated. The end of the supply main pipe 42 on the side surface 12d side is closed. On the other hand, the end portion on the side surface 12b side of the return main pipe 44 is closed, and the end portion on the side surface 12d side is bent upward to provide a return port 45, and the return port connecting pipe 30 is attached to and detached from the return port 45. It is freely connected and communicates with the return side main pipe 16. Similarly to the main supply pipe 36 and the main return pipe 38, the main supply pipe 42 and the return main pipe 44 are also equidistantly spaced along the longitudinal direction in the portion facing the lower side in use. A thin heat exchange pipe 40 is provided so as to hang substantially perpendicular to the supply main pipe 42.

  Here, the supply main pipe 36, the return main pipe 38, and the heat exchange pipe 40 connected thereto and positioned by the holding member 18 constitute one flat heat exchange pipe mat 46. The supply main pipe 42, the return main pipe 44, and the heat exchange pipe 40 connected to them also constitute a heat exchange pipe mat 46 having the same size and shape. The heat exchange pipe mat 46 becomes a plate having a little thickness by the holding member 18, and the heat exchange pipe mat 46 can be removed from the ice heat storage tank 12 for maintenance such as replacement or repair. Further, a plurality of the heat exchange pipe mats 46 may be connected and installed in the ice heat storage tank 12 as one module. Inside the ice heat storage tank 12, heat exchange pipe mats 46 are arranged at predetermined intervals in two rows across a virtual central boundary line.

  Further, in the ice heat storage tank 12, support members 58 that prevent the supply main pipes 36, 42 and the return main pipes 38, 44 from being lifted and restrict their positions are provided along the two rows of heat exchange pipe mats 46. There are four in parallel. Furthermore, in order to regulate the movement of the heat exchange pipe mat 46 in the ice heat storage tank 12, a regulating member 60 is attached in the heat storage tank 12 in parallel with the side surfaces 12a and 12c.

  Next, the usage method of the ice heat storage apparatus 10 of this embodiment is demonstrated. Supply side main piping 14 is connected to the antifreeze outlet of a heat exchanger via piping which is not illustrated. The return side main pipe 16 is connected to an antifreeze liquid inlet of the heat exchanger via a pipe (not shown).

  Then, the ice heat storage tank 12 is filled with water, and the antifreeze liquid set to about −several degrees C with a refrigerator or the like passes through the supply side main pipe 14, the supply port connection pipes 22 and 26, and the supply main pipes 36 and 42. Then, it flows in the heat exchange pipe 40. The antifreeze flowing into the heat exchange pipe 40 passes through the return main pipes 38 and 44, the return port connecting pipes 30 and 34, and the return side main pipe 16, returns to the antifreeze liquid inlet of the heat exchanger, and is cooled again to a predetermined temperature. Is done. By circulating the antifreeze liquid in this way, the water in the ice heat storage tank 12 is frozen.

  When the ice in the ice heat storage tank 12 is used as a cold heat source, the antifreeze liquid is circulated in the same manner, heat is absorbed by the antifreeze liquid by heat exchange (not shown), and the heat exchange pipe is circulated to circulate in the ice heat storage tank 12. Cool the antifreeze with ice and send it again to the heat exchanger.

  Next, when exchanging the heat exchange pipe mat 46 or its module positioned below the supply side main pipe 14 for maintenance or the like, the supply port connecting pipe 22 of the supply main pipe 36 to be replaced and the return main pipe are replaced. The 38 return port connecting pipes 34 are disconnected by connectors 20 and 32, respectively, and separated from the supply side main pipe 14 and the return side main pipe 16. Then, the module or the heat exchange pipe mat 46 is moved between the supply side main pipe 14 and the return side main pipe 16 to be pulled up and taken out from the ice heat storage tank 12. Next, a new module or heat exchange pipe mat 46 is put into the ice heat storage tank 12 from between the supply side main pipe 14 and the return side main pipe 16 and moved to a predetermined position below the supply side pipe 14 for supply. The supply port connecting pipe 22 of the main pipe 36 and the return port connecting pipe 34 of the return main pipe 38 are connected by connectors 20 and 32, respectively. As a result, the antifreeze circulates in communication with the supply side main pipe 14 and the return side main pipe 16. This replacement may be performed by removing the main pipes 36 and 38 at the supply port 37 and the return port 39.

  Similarly, when the module or the heat exchange pipe mat 46 located below the return side main pipe 16 is replaced, the supply port connecting pipe 26 of the supply main pipe 42 to be replaced and the return main pipe 44 are returned. The port connection pipe 30 is removed by connectors 24 and 28, respectively, and separated from the supply side main pipe 14 and the return side main pipe 16. Then, the module or the heat exchange pipe mat 46 is moved between the supply side main pipe 14 and the return side main pipe 16 to be pulled up and taken out from the ice heat storage tank 12. Next, a new module or heat exchange pipe mat 46 is put into the ice heat storage tank 12 from between the supply side main pipe 14 and the return side main pipe 16, moved to a predetermined position below the return side main pipe 16, and supplied. The supply port connecting pipe 26 of the main pipe 42 and the return port connecting pipe 30 of the return main pipe 44 are connected by connectors 24 and 28, respectively. As a result, the supply side main pipe 14 and the return side main pipe 16 are continuous, and the antifreeze liquid circulates. This replacement may also be performed by removing the main pipes 42 and 44 at the supply port 43 and the return port 45.

  According to the ice heat storage device 10 of this embodiment, the supply main pipes 36, 42, the heat exchange pipe 40, and the return main pipes 38, 44 are integrally formed to form the heat exchange pipe mat 46. Replacement is possible and maintenance is easy. Further, when assembling, the heat exchange pipe mat 46 or each module can be put into the ice heat storage tank 12 and the assembling process becomes easy. The heat exchange pipe mat 46 formed by the supply main pipes 36 and 42 and the return main pipes 38 and 44 has a length that passes between the supply side main pipe 14 and the return side main pipe 16. Alternatively, it is not necessary to remove the return side main pipe 16 from the ice heat storage tank 12, and it is possible to remove only the target module or the heat exchange pipe mat 46 while the surrounding heat exchange pipe mat 46 is in an assembled state, and maintenance is possible. Is simple. Moreover, the supply main pipes 36 and 42 are formed to be approximately half the length in the direction in which the ice heat storage tank 12 is installed. For example, the flow of the antifreeze liquid is more than the flow of the antifreeze liquid through one long supply main pipe. Uniform and good heat exchange efficiency. Further, in order to allow the antifreeze liquid to flow uniformly through the heat exchange pipe 40, a thick supply main pipe is required. However, since the main pipe of this embodiment is relatively short, the supply main pipe 36 having a small diameter is also used. Therefore, the heat exchange pipes 40 can be densely provided.

  In addition, the ice heat storage device of this invention is not limited to the said embodiment, The magnitude | size and number of a heat exchange pipe mat or a module can be changed, and it is also possible to install in 3 or more rows. The diameter, connection method, installation direction, etc. of each pipe can be freely changed. Moreover, a lid member can be detachably attached to the ice heat storage tank.

It is a top view of the ice heat storage apparatus of one Embodiment of this invention. It is a longitudinal cross-sectional view of the ice thermal storage apparatus of this embodiment. It is the longitudinal cross-sectional view which looked at FIG. 2 of the ice thermal storage apparatus of this embodiment from the right side surface. It is a top view which shows the holding member holding the heat exchange pipe of the ice heat storage apparatus of this embodiment.

DESCRIPTION OF SYMBOLS 10 Ice thermal storage apparatus 12 Ice thermal storage tank 14 Supply side main piping 16 Return side main piping 20, 24, 28, 32 Connector 22, 26 Supply port connection pipes 30, 34 Return port connection pipes 36, 42 Supply main pipes 37, 43 Supply port 38, 44 Return main pipe 39, 45 Return port 40 Heat exchange pipe 46 Heat exchange pipe mat

Claims (4)

An ice heat storage tank having heat insulation properties;
A supply-side main pipe and a return-side main pipe that are installed above the opening of the ice heat storage tank and circulate antifreeze into the ice heat storage tank;
The interval between the supply-side main pipe and the return-side main pipe is about ½ to slightly wider than the width of the side surface of the ice heat storage tank positioned perpendicular to the supply-side main pipe and the return-side main pipe. Set to width,
A main pipe for supply and a main pipe for return that are installed below the supply-side main pipe and the return-side main pipe and are formed shorter than the interval between the supply-side main pipe and the return-side main pipe;
A large number of heat exchange pipes that are connected to the side surfaces of the supply main pipe and the return main pipe, and are folded back to reach the vicinity of the bottom of the ice heat storage tank,
A supply port connecting pipe for communicating the supply side main pipe and the supply main pipe;
A return port connecting pipe for communicating the return side main pipe and the return main pipe;
The supply main pipe and the return main pipe and the heat exchange pipe connected therebetween as an integral heat exchange pipe mat,
In the heat exchange pipe mat, the longitudinal direction of the main pipe for supply and the main pipe for return is parallel, and both longitudinal ends of the main pipe for supply and the main pipe for return are perpendicular to the longitudinal direction. The supply side main pipe and the return side main pipe and the return side main pipe are set to a width that is narrower than about ½ of the width of the side surface of the ice heat storage tank that is substantially aligned with the supply side main pipe and the return side main pipe. Located almost perpendicular to the side main piping,
An ice heat storage device characterized in that the heat exchange pipe mat can be taken in and out between the supply side main pipe and the return side main pipe.   A plurality of connectors are provided on the side surfaces of the supply side main pipe and the return side main pipe, the supply port connecting pipe is connected to the connector of the supply side main pipe, and the connector of the return side main pipe is connected to the connector of the return side main pipe 2. The ice heat storage device according to claim 1, wherein the return port connecting pipe is connected, and each connecting pipe is detachably connected to each connector. The heat exchange pipe mat, the supply-side main pipe and return two rows along the side main pipe ice thermal storage device according to claim 1 or 2, characterized in that it is more than Installation on. The supply port connecting pipes are provided so that a pair protrudes in opposite directions from the supply side main pipe, and are connected to the supply main pipes of the heat exchange pipe mats installed in two rows, respectively, and the return port A pair of connecting pipes are provided so as to protrude in opposite directions from the return-side main pipe, and are connected to the return main pipes of the heat exchange pipe mats installed in two rows, respectively. The ice heat storage device according to claim 3.

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