JP4186836B2 - Ice heat storage device - Google Patents

Description

  The present invention relates to an ice heat storage device that prevents the supercooling state from being released inside the supercooler even if the temperature of the water led to the supercooler is kept low, thereby enabling high efficiency and stable ice making. It is about.

  The water extracted from the ice heat storage tank through the water introduction pipe is supercooled to about −2 ° C., for example, by a supercooler, and the supercooled water is sent to the supercooling release device to release the supercooled state. An ice heat storage device is known in which the ice is supplied to the ice heat storage tank to store cold energy.

  FIG. 10 shows an example of the conventional ice heat storage device. In this type of ice heat storage device, water inside the ice heat storage tank 1 for storing ice and storing heat is supplied to a pump 3 by a water introduction pipe 2. And then led to the supercooler 4 where it is cooled to a supercooling temperature of about −2 ° C., for example, by the refrigerant of the refrigerator 5 in the supercooler 4, and the supercooled water thus cooled is led to the supercooling release device 6 By releasing the cooling state, slurry-like ice is generated, and this ice is stored in the ice heat storage tank 1.

  Maintaining the supercooling temperature as low as possible in the supercooler 4 can increase the amount of ice produced by releasing the supercooling state with the supercooling release device 6. preferable.

  However, when the supercooling temperature in the supercooler 4 is kept low in order to increase the amount of ice produced, fine ice particles (in the water supplied from the ice heat storage tank 1 to the supercooler 4 ( If there is fine ice), the supercooling is released inside the supercooler 4 by using the fine ice as a nucleus, and for this reason, the ice generated in the supercooler 4 adheres to the inside of the supercooler 4 and grows. Problems arise. If ice adheres to the inside of the subcooler 4, the amount of water that can be supplied to the subcooler 4 decreases, and stable ice making cannot be performed. Further, when the supercooler 4 is blocked by the attached ice, the ice heat storage device cannot be operated.

  On the other hand, water molecules are composed of hydrogen ions and oxygen ions that are covalently bonded. Furthermore, molecules form a cluster of clusters such as grape bunches by weak hydrogen bonds that attract adjacent O and H. is doing. Further, the phase change settles down and stabilizes in a small energy phase so as to roll down the slope when the free energy is smaller in the phase change. Ordinary water has a large cluster of water molecules, and thus water having a large cluster of water molecules undergoes a phase change so as to proceed to produce ice at the supercooling temperature below the freezing point as described above. For this reason, even when the cluster of water is large, the supercooling is easily released inside the supercooler 4, and there is a problem that ice generated by the release of the supercooling adheres to the inside of the supercooler 4.

  As described above, even if fine ice is present in the water or the water molecule cluster is large, the supercooled state is easily released inside the supercooler 4 and is generated by releasing the supercooled state. There is a problem that ice adheres to the inside of the supercooler 4. Thus, when ice adheres to the inside of the subcooler 4, it is necessary to remove the adhering ice. In order to remove the ice adhering to the inside of the supercooler 4, after stopping the operation of the ice heat storage device, hot water is supplied to the supercooler 4 through the water introduction pipe 2, A method of melting and removing the attached ice is generally employed.

  However, if the ice storage device is stopped and the ice adhesion release operation is performed every time ice adheres to the subcooler 4 as described above, it is inefficient and productivity is poor.

  For this reason, as a general method for preventing the fine ice from being supplied to the supercooler 4, a strainer 7 and a filter 8 are provided in the water introduction pipe 2 as shown in FIG. It prevents the fine ice from being guided to the surface.

  However, the filter 8 has a problem that even when trying to separate smaller fine ice by reducing the diameter (mesh) of the pores to be separated, the filter 8 is immediately clogged and cannot be separated. For this reason, the aperture of the pores of the filter must be increased. For this reason, even if the filter 8 is installed, the fine ice passes through the filter 8 and is guided to the subcooler 4, thereby There arises a problem that the supercooling state is canceled inside the supercooler 4 as a nucleus.

  For this purpose, conventionally, as shown in FIG. 10, a temperature controller 10 provided with a heat exchanger 9 is installed in the water introduction pipe 2, and water having a temperature of about 0 ° C. taken out from the ice heat storage tank 1 is, for example, 0.5 The fine ice is melted by heating to about 0 ° C., and then supplied to the supercooler 4.

On the other hand, as a method of refining the water molecule cluster supplied to the subcooler, a bioceramics treatment device is provided in the ice heat storage tank or the water introduction pipe, and the water molecule cluster supplied to the subcooler is refined. Thus, there is a technique that makes it difficult to release the supercooling state in the supercooler and reduces the problem of the blockage of the supercooler (see, for example, Patent Document 1).
JP 2000-356440 A

  However, even if a bioceramics treatment device is provided in an ice heat storage tank or a water introduction pipe as in Patent Document 1 and the water molecule clusters supplied to the subcooler are made finer, the fine ice that has passed through the filter is not retained. The problem of being supplied to the subcooler still arises. For this reason, in Patent Document 1, as shown in FIG. 10, the water inlet pipe 2 is provided with a temperature controller 10 and the ice heat storage tank 1 has a temperature of about 0 ° C. It is forced to melt the fine ice by heating the temperature water to 0.5 ° C.

  However, with respect to −2 ° C., which is a general supercooling temperature in the subcooler 4, it is possible to guide the water after being heated to 0.5 ° C. once at a temperature of about 0 ° C. that is led to the supercooler 4. As a result, the drive power of the machine 5 was increased, resulting in an energy loss of about 20%.

  The present invention prevents the problem that the supercooling state is canceled inside the supercooler even if the temperature of the water led to the supercooler is kept low, and makes it possible to produce ice with high efficiency and stability. The purpose is to provide.

An ice heat storage device according to the present invention includes a supercooler that cools water taken out from an ice heat storage tank by a water introduction pipe to a supercooled state, and releases the supercooled state of the supercooled water cooled by the supercooler. An ice heat storage device comprising a supercooling release device that supplies the ice heat storage tank with the generated ice.
A water treatment device having a water activation function for activating water supplied to the subcooler and a filter function for supplying water in a direction intersecting with the pores of the filter and taking out water not containing fine ice. ,
The pores formed in the filter are inclined at an angle that recedes with respect to the flow of water flowing along the filter surface .

  In the present invention, the water treatment device may be a water activation filter, and the water activation filter may be a ceramic filter or a carbon filter.

  In the present invention, the water treatment apparatus may be provided in a water introduction pipe or an ice heat storage tank.

  In the present invention, the water treatment device may be composed of a filter and a magnetic force generator, or may be composed of a filter and an ultrasonic transmitter.

  In the present invention, the filter may be a ceramic filter or a carbon filter.

According to the ice heat storage device of the present invention, the water activation function for activating the water supplied to the subcooler, and the filter for taking out water that does not contain fine ice by supplying water in the direction intersecting the pores of the filter a water treatment apparatus having a function, the pores formed in the filter. Thus inclined at an angle to retreat to the flow of water flowing along the filter surface, the ice into the pores Therefore, it is possible to reliably prevent fine ice from entering the pores, and to supply water containing fine ice and fine water molecule clusters to the subcooler. It is possible to reliably prevent the problem that the supercooled state is released when the water is supercooled in the cooler. Therefore, ice is adhered to the inside of the subcooler by releasing the supercooling state inside the subcooler as in the past, and therefore it is necessary to stop the operation of the ice heat storage device and perform the ice adhesion release operation. Therefore, there is an effect that the operation efficiency of the ice heat storage device can be increased and the productivity can be greatly improved.

  Further, since the problem of the release of the supercooling state inside the subcooler can be prevented, it is not necessary to heat the water introduced into the supercooler with a temperature controller as in the prior art. Since low-temperature water can be introduced into the supercooler, there is an effect that significant power saving can be achieved by reducing the power required to supercool the water in the refrigerator.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of the invention will be described with reference to the drawings.

  FIG. 1 is a block diagram showing an example of an embodiment of the ice heat storage device of the present invention, the basic structure is the same as FIG. 10, and the same members and parts are denoted by the same reference numerals and redundant description is omitted. .

  As shown in FIG. 1, water that activates water supplied to the supercooler 4 between the pump 3 and the supercooler 4 in the water introduction pipe 2 that guides the water in the ice heat storage tank 1 to the supercooler 4. A water treatment device 11 having an activation function and a filter function capable of taking out water not containing fine ice without clogging is installed.

  As shown in FIG. 2, the water treatment device 11 has an inlet chamber 14 and an outlet chamber 15 formed by installing a water activation filter 13 inside the container body 12. As the water activation filter 13, a ceramic filter 13 a in which pores 16 are formed in a ceramic (bioceramic) plate, or pores 16 are formed in a mesh shape with ceramic fibers, or carbon ( It is possible to use a carbon filter 13b in which the pores 16 are formed in a plate of activated carbon) or the pores 16 are formed in a mesh shape with carbon fibers. The water activation filter 13 has a function of refining clusters of water molecules when water contacts the ceramic filter 13a or the carbon filter 13b.

  The water is introduced into one side of the inlet chamber 14 of the container body 12 so as to supply water in a direction intersecting with the pores 16 of the water activation filter 13 (a direction parallel to the filter surface of the water activation filter 13). A pipe 2 is connected, and on the other side of the inlet chamber 14, a part of the water flowing along the filter surface of the water activation filter 13 is passed through the control valve 17 in FIG. A return pipe 2a returning to the heat storage tank 1 is connected. The water led through the pores 16 of the water activation filter 13 and led to the outlet chamber 15 is guided to the supercooler 4 through the water introduction pipe 2b. As described above, the water supplied to the inlet chamber 14 of the water treatment device 11 by the water introduction pipe 2 flows along the filter surface so as to intersect the pores 16 of the water activation filter 13 and exists in the water. The ice stays in the pores 16 and clogs the pores 16, and the fine ice is prevented from being guided to the outlet chamber 15 through the pores 16. In FIG. 2, another similar water activation filter 13 ′ is installed at the subsequent stage of the water activation filter 13. By providing the multistage water activation filters 13 and 13 ′ in this way, water is The probability of contacting the activation filters 13 and 13 ′ is increased to increase the effect of refining the water molecule clusters, thereby further increasing the activation of the water. At this time, the pores 16 ′ of the downstream water activation filter 13 ′ have a larger diameter than the pores 16 of the upstream water activation filter 13.

  FIG. 3 shows a case where the pores 16 formed in the water activation filter 13 are inclined at an angle α that recedes with respect to the flow of water flowing through the inlet chamber 14. By inclining the holes 16, it is possible to more reliably prevent clogging of ice into the pores 16 and intrusion of fine ice into the pores 16.

  Next, the operation of the above embodiment will be described.

  1 and 2, the water taken out from the ice heat storage tank 1 by the pump 3 is introduced into the inlet chamber 14 of the water treatment device 11 through the water introduction pipe 2, and the pores 16 of the water activation filter 13. It flows along the filter surface so as to intersect, and a part of the water is returned to the ice heat storage tank 1 by the return pipe 2a. On the other hand, the water that has passed through the pores 16 of the water activation filter 13 is led to the outlet chamber 15 and led to the supercooler 4 through the water introduction pipe 2b.

  At this time, the water introduced into the inlet chamber 14 and led out to the outlet chamber 15 is the surface of the water activation filters 13 and 13 'made of the ceramic filter 13a or the carbon filter 13b and the fineness of the water activation filters 13 and 13'. By contacting with the holes 16 and 16 ', the water molecule clusters are refined, thereby promoting the activation of the water. At this time, the water returned to the ice heat storage tank 1 by the return pipe 2a is also refined by the contact with the water activation filter 13, so that the water molecule clusters are gradually refined. The miniaturization proceeds, and therefore, the activation of water introduced into the subcooler 4 is further promoted.

  In addition, when ice is present in the water inside the water introduction pipe 2, the ice is directed toward the return pipe 2 a due to inertia by riding on the flow of water flowing along the filter surface of the water activation filter 13. In addition, the ice does not go to the pores 16. Therefore, even if the diameter of the pores 16 is reduced, the problem that the pores 16 are clogged with ice can be prevented. By reducing the diameter of the pores 16 in this way, fine ice is led to the outlet chamber 15. Can be surely prevented.

  Accordingly, the water guided to the supercooler 4 has a fine water molecule cluster and does not contain fine ice, so that it is possible to reliably prevent the problem of the supercooling state being released inside the supercooler 4. .

  Further, since it is possible to prevent the problem that the supercooling state is released inside the supercooler 4, it is no longer necessary to heat the water introduced into the supercooler 4 with the temperature controller 10 (FIG. 10) as in the prior art. Therefore, since 0 ° C. water inside the ice heat storage tank 1 can be introduced into the supercooler 4, the power consumption for cooling the water to a supercooling temperature of −2 ° C. by the refrigerator 5 can be reduced, Significant energy savings can be achieved.

  FIG. 4 shows another embodiment of the present invention, and shows a case where the water treatment device 11 is provided in the ice heat storage tank 1. As shown in FIG. 5, the water treatment apparatus 11 includes a partition wall 18 and a water activation filter 13, 13 ′ similar to the above in the ice heat storage tank 1. Water is taken out by the water introduction pipe 2 and a return pipe 20 connected to the outlet of the pump 3 shown in FIG. 4 is returned to the inside of the ice heat storage tank 1 through a control valve 21. The water from the return pipe 20 is jetted into the ice heat storage tank 1 so as to cross the pores 16 of the water activation filter 13 and flow along the filter surface.

  4 and 5 also, the water led to the subcooler 4 is finely clustered with water molecules by the action of the water activation filters 13 and 13 'formed of the ceramic filter 13a or the carbon filter 13b. . Further, since the water in the return pipe 20 is sprayed into the ice heat storage tank 1 from the direction intersecting the pores 16 of the water activation filter 13 along the filter surface, a flow of water along the filter surface is formed. Therefore, the ice present in the water moves along the flow, and the water not containing fine ice can be taken out from the pores 16. Therefore, the water taken out by the water introduction pipe 2 and guided to the supercooler 4 has a problem that the supercooled state is released inside the supercooler 4 because the water molecule clusters are refined and does not contain fine ice. Can be reliably prevented. Further, since it is possible to prevent the problem that the supercooled state is released inside the supercooler 4, it is not necessary to heat the water introduced into the supercooler 4 by providing a temperature controller as in the prior art, and the ice heat storage tank 1 Since water at 0 ° C. inside can be introduced into the supercooler 4, the power consumption in the refrigerator can be reduced and a significant energy saving can be achieved.

  FIG. 6 shows still another embodiment of the present invention. A water treatment device 11 including a filter 22 and a magnetic force generator 23 is provided between the pump 3 and the supercooler 4 in the water introduction pipe 2. Indicates the case.

  As in FIG. 2, the filter 22 is provided with water activation filters 13 and 13 ′ inside the container body 12 to form an inlet chamber 14 and an outlet chamber 15, and is supplied from one side of the inlet chamber 14. The water to flow crosses the pores 16 of the water activation filter 13 and flows along the filter surface. As a result, a part of the water flowing along the filter surface is returned to the ice heat storage tank 1 via the regulating valve 17 by the return pipe 2a on the other side, and the water activation filters 13, 13 ′ are further refined. The water led out to the outlet chamber 15 through the hole 16 is led to the magnetic force generator 23 through the water introduction pipe 2b. At this time, various materials can be selected and used for the filter 22 forming the pores 16, but if the ceramic filter 13a or the carbon filter 13b is used as described above, the fine ice can be separated and removed. Since the water molecule clusters can be refined by the ceramic filter 13a or the carbon filter 13b, the activation of water can be further promoted, which is advantageous.

  Further, as shown in FIG. 7, the magnetic force generator 23 has a magnet 25 made of an electromagnet or a permanent magnet disposed in a steel casing 24, and the water supplied to the inlet 26 by the water inlet pipe 2b. Then, it is led to a wide passage 28 inside the casing 24 through a narrow introduction passage 27 formed in an annular shape between the casing 24 and one end of the magnet 25, and is led out from a lead-out port 29 formed at the other end of the casing 24. It leads to the vessel 4. In this magnetic force generation device 23, when water passes through the narrow introduction flow path 27, it flows across a magnetic force line 30 formed by the magnet 25 so as to pass through the narrow introduction flow path 27. A cluster of water molecules is refined.

  6 and 7, therefore, the filter 22 configured in the same manner as in FIG. 2 has the filter surface so that the water supplied by the water introduction pipe 2 intersects the pores 16 of the water activation filter 13. The ice existing in the water is caused to flow along the return pipe 2 a side, and the water not containing fine ice can be taken out from the pores 16. Furthermore, by introducing the water not containing fine ice to the magnetic force generator 23, the water molecule clusters can be made fine by the action of the magnetic force. Therefore, since the water led to the supercooler 4 does not contain fine ice and the water molecule clusters are refined, the problem of the supercooled state being released when the supercooler 4 supercools the water is reliably ensured. Can be prevented. Further, if the filter 22 is constituted by the ceramic filter 13a or the carbon filter 13b of FIG. 2, the water activation clusters 13, 13 ′ can also make the water molecule clusters finer, thereby further promoting the activation of the water. Can do.

  FIG. 8 shows still another embodiment of the present invention. A water treatment device 11 comprising a filter 22 and an ultrasonic transmitter 31 is provided between the pump 3 and the supercooler 4 in the water introduction pipe 2. The case where it is provided is shown.

  The filter 22 has the same configuration as that described with reference to FIG.

  In addition, as shown in FIG. 9, the ultrasonic transmitter 31 is installed directly on the wall surface of the water introduction pipe 2b. The ultrasonic transmitter 31 is adapted to make the water molecules flowing into the water introduction pipe 2b fine by making ultrasonic waves act on the water flowing inside the water introduction tube 2b.

  8 and 9, the filter 22 configured in the same manner as in FIG. 6 has the filter surface so that the water supplied by the water introduction pipe 2 intersects the pores 16 of the water activation filter 13. The ice existing in the water is caused to flow along the return pipe 2 a side, and the water not containing fine ice can be taken out from the pores 16. Furthermore, by introducing water that does not contain fine ice to the ultrasonic transmitter 31, the clusters of water molecules can be refined by the action of ultrasonic waves. Therefore, since the water guided to the supercooler 4 does not contain fine ice and the water molecule clusters are miniaturized, the problem that the supercooled state is released when the water is cooled by the supercooler 4 is ensured. Can be prevented. Further, if the filter 22 is constituted by the ceramic filter 13a or the carbon filter 13b of FIG. 2, the water activation clusters 13, 13 ′ can also make the water molecule clusters finer, thereby further promoting the activation of the water. Can do.

  It should be noted that the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the present invention.

It is a block diagram which shows an example of the form of the ice thermal storage apparatus of this invention. It is sectional drawing which shows an example of the water treatment apparatus in FIG. It is explanatory drawing which shows the other example of the water activation filter of FIG. It is a block diagram which shows the other example of the form of the ice thermal storage apparatus of this invention. It is sectional drawing which shows an example of the water treatment apparatus in FIG. It is a block diagram which shows the further another example of the form of the ice thermal storage apparatus of this invention. It is sectional drawing which shows an example of the magnetic force generator in FIG. It is a block diagram which shows the further another example of the form of the ice thermal storage apparatus of this invention. It is sectional drawing which shows an example of the ultrasonic transmitter in FIG. It is a block diagram which shows an example of the conventional ice heat storage apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Ice thermal storage tank 2 Water introduction pipe 4 Supercooler 6 Supercooling cancellation | release apparatus 11 Water treatment apparatus 13,13 'Water activation filter 13a Ceramic filter 13b Carbon filter 16,16' Pore 22 Filter 23 Magnetic force generator 31 Ultrasonic wave Transmitter

Claims (10)

The supercooler that cools the water taken out from the ice heat storage tank through the water introduction pipe to a supercooled state, and the ice that is generated by releasing the supercooled state of the supercooled water cooled by the supercooler is generated as described above. An ice heat storage device comprising a supercooling release device that supplies the ice heat storage tank,
A water treatment device having a water activation function for activating water supplied to the subcooler and a filter function for supplying water in a direction intersecting with the pores of the filter and taking out water not containing fine ice. ,
The ice heat storage device characterized in that the pores formed in the filter are inclined at an angle retreating with respect to the flow of water flowing along the filter surface .   The ice heat storage device according to claim 1, wherein the water treatment device is a water activation filter.   The ice heat storage device according to claim 2, wherein the water activation filter is a ceramic filter.   The ice heat storage device according to claim 2, wherein the water activation filter is a carbon filter.   The ice heat storage device according to any one of claims 1 to 4, wherein the water treatment device is provided in a water introduction pipe.   The ice heat storage device according to any one of claims 1 to 4, wherein the water treatment device is provided in an ice heat storage tank.   The ice heat storage device according to claim 1, wherein the water treatment device includes a filter and a magnetic force generation device.   The ice heat storage device according to claim 1, wherein the water treatment device includes a filter and an ultrasonic transmitter.   The ice heat storage device according to claim 7 or 8, wherein the filter is a ceramic filter.   The ice heat storage device according to claim 7 or 8, wherein the filter is a carbon filter.

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