WO2007069356A1

WO2007069356A1 - Method of ice making, and ice making apparatus, using supercooled water

Info

Publication number: WO2007069356A1
Application number: PCT/JP2006/311707
Authority: WO
Inventors: Ikuhiro Yamada; Takahiro Ogawa
Original assignee: Shinryo Corporation
Priority date: 2005-12-15
Filing date: 2006-06-12
Publication date: 2007-06-21
Also published as: MY142352A; JP4248543B2; JP2007163069A; TWI324243B; TW200722694A

Abstract

A method of ice making, and ice making apparatus, in which with respect to the supercooled water produced by a supercooling unit, the supercooling is annulled without liberating of the supercooled water into the atmosphere. Supercooled water is introduced in a vertical cylindrical housing in the horizontal direction and tangential direction from an inferior portion thereof. While annulling the supercooling by swirling flow, produced ice is collected in the vicinity of cylinder axis. Through a nozzle disposed in the vicinity of cylinder axis above the inferior portion, supercooled water and ice in the form of jet flow are fed under pressure to the center area of the cylindrical housing. In the center area, the jet flow runs so as to realize vertical convection, thereby annulling the supercooling of the rest of supercooled water. Thus, most of the supercooling is annulled by the jet flow and the swirling flow.

Description

Specification

Ice making method and ice making apparatus using supercooled water

Technical field

TECHNICAL FIELD [0001] The present invention relates to an ice manufacturing method and apparatus for storing heat storage ice as a cooling source for air conditioning, spraying ice for indoor and outdoor ski areas, ice for general cooling / cooling, and the like. The present invention relates to a type of ice making device that releases supercooling without releasing supercooled water generated by a cooler to the atmosphere.

Background art

[0002] A type of ice making device that releases supercooling without releasing the supercooled water to the atmosphere blocks heat exchange with the atmosphere to prevent the ice from melting, and oxygen dissolves in the circulating water. It is widely used to prevent corrosion of pipes and equipment. The following technologies are known as devices for releasing supercooling in this type of ice making device.

[0003] Patent Document 1: Japanese Patent Application Laid-Open No. 7-4801 “Ice Maker” (Patent No. 2811271) blows a jet into the inside of a large-diameter pipe and supercools it with a phase change induction device Is going to be released. In this method, a part of the supercooled water flows out to the outlet pipe without recirculation in the ice making device, so the residual supercooling degree (freezing point 0 ° C There is a problem that the difference between the temperature measured at the outlet of the ice making device becomes large.

[0004] Patent Document 2: Japanese Patent Application Laid-Open No. 2004-85181 “Ice Thermal Storage Device”, Japanese Patent Application Laid-Open No. Hei 6-74498 “Ice Making Device”, and Japanese Patent Application Laid-Open No. 2001-241705 “Method for Canceling Supercooling and Ice Production Device” Using the swirling flow, supercooling is released by staying and stirring, and trigger materials (such as air and ice water) 'thermo module' mechanical impact 'ultrasonic waves. In these devices, the ice generated by the swirling flow gathers in the center, and thus the generated ice cannot be used to cancel the supercooling of the supercooled water at the outer periphery.

[0005] Patent Document 3: Japanese Patent Application Laid-Open No. 2002-13846 “Ice-making method and ice-making apparatus by releasing subcooling in water” introduces a sub-line separately from the main line of supercooling water to cause a swirling flow, and forms a conical shape. By reducing the diameter, the ice generated by releasing the supercooling is used as seed ice to release the supercooling. It is configured to do. This device requires a secondary line, which complicates the device and causes a decrease in ice concentration due to an increase in flow rate.

Disclosure of the invention

Problems to be solved by the invention

[0006] A first object of the present invention is to prevent the supercooling water from flowing out as it is to increase the residual supercooling degree and to increase the ice making rate at the ice making section outlet.

The second object of the present invention is to ensure that the supercooling is released and prevent the residual supercooled water from accumulating and accumulating ice inside the ice water piping.

Means for solving the problem

[0007] In order to solve the above-described problems, in the first aspect of the present invention, the lower partial force of the vertical cylindrical housing also introduces supercooling water in the horizontal direction and tangential direction, and performs supercooling by the swirling flow. Ice generated while being released is collected in the vicinity of the cylindrical axis, and supercooled water and ice are jetted from a nozzle provided in the vicinity of the upper cylindrical axis of the lower part to the central portion of the cylindrical housing. The supercooling of the remaining supercooling water is released by pumping and flowing so that the jet flows in a convection up and down in the central portion, and most of the supercooling is released by the swirling flow and the jet flow. An ice making method using supercooled water is provided.

The invention's effect

That is, in the ice making method of the present invention, most of the supercooling is canceled by the swirling flow and the jet flow, so that the solution of the supercooling can be surely more reliable than the conventional supercooling canceling method using only the swirling flow. Can be performed. Therefore, it is possible to prevent the supercooled water from flowing out as it is and increase the residual supercooling, and to increase the ice making rate. Furthermore, since the supercooling is reliably released, it is possible to prevent the residual supercooled water from adhering and accumulating ice inside the ice water piping and clogging the piping.

[0009] In the second aspect of the present invention, a supercooler that generates supercooling water, an ice making unit that includes a vertical cylindrical housing, and a horizontal portion and a tangential direction at a lower portion of the cylindrical housing. An inlet pipe for introducing supercooling water and a lower part of the cylindrical housing A swirling flow portion that releases supercooling by swirling flow, an ice nucleus generating means that is provided in the vicinity of the swirling flow portion to generate ice nuclei that triggers the release of subcooling, and near the cylindrical axis above the lower portion A jet nozzle that is provided at the center of the cylindrical housing and selectively supplies the ice-water mixture at the central part, which has been advanced to the extent that the supercooling is canceled by the swirling flow, to the central part of the cylindrical housing; A jet part that releases supercooling by cooling the ice water having a residual supercooling degree sent from the swirling flow part at the central part of the cylindrical housing, and ice water that has been largely released from the supercooling by the jet flow. An ice making device using supercooled water is provided, which includes an ice water outlet pipe that sends out an upper partial force of the water and releases most of the supercooling by swirling flow and jet flow.

[0010] According to this ice making device, it is possible to produce the same effects as the effects based on the ice making method described above.

[0011] In a further preferred aspect of the present invention, phase change propagation preventing means for preventing a phase change from water to ice from propagating upstream can be provided between the supercooler and the introduction pipe. . As a means for preventing phase change propagation, a method of connecting pipes (plastic pipe / rubber pipe) or bellows pipes having different heat transfer coefficients can be used.

[0012] In the ice making device of the present invention, an ice nucleus generating means for generating ice nuclei that triggers the release of supercooling is provided in the vicinity of the swirling flow portion. The ice nuclei generation means is composed of a mechanism that adds the trigger material 'thermo module' 'mechanical impact' ultrasonic waves as described above, and the supercooling is released by energizing them.

BEST MODE FOR CARRYING OUT THE INVENTION

[0013] Figs. 1 and 2 show a preferred embodiment of the ice making device according to the present invention. The type of supercooling water generated by the supercooler is released without being released to the atmosphere. It is an ice making device. This device is composed of a supercooler 1 that generates supercooling water, an ice making unit 2 that includes a vertical cylindrical housing 12, and a supercooling that transports supercooling water from the supercooler 1 toward the cylindrical housing 12. The water transfer pipe 3, the introduction pipe 4 for introducing supercooling water horizontally and tangentially at the lower part of the cylindrical housing 12, the ice nucleus generating means 6, and ice water from which most of the supercooling has been released into ice An ice water outlet pipe 10 for feeding to the water pipe 11 is provided.

[0014] The supercooler 1 also has a well-known heat exchanger power, and water for ice making enters from the inlet pipe 13 and supercools. While exiting the water transfer pipe 3, the cooling liquid is cooled to a supercooled state by heat exchange as it enters the inlet pipe 15 and exits the outlet pipe 16.

[0015] The inside of the cylindrical housing 12 is divided by a nozzle plate 7 into a swirling flow part 5 in a lower part and a jet part 8 in a central part. A circular nozzle 7 a is provided in the center of the nozzle plate 7. In the swirling flow part 5 located in the lower part of the cylindrical housing 12, the supercooling water flowing from the introduction pipe 4 forms a swirling flow, and the ice nuclei generated by the ice nucleation generating means and the supercooling water are mixed and supercooled. The state is released.

[0016] Note that a phase change from water to ice does not propagate upstream between the supercooling water transport pipe 3 and the introduction pipe 4 of the supercooler 1 so that the pipe is clogged, for example. It is desirable to provide a phase change propagation preventing portion 18 in which material forces having different heat transfer coefficients are also formed.

[0017] In this apparatus, an ice nucleus generating means 6 is provided in the vicinity of the swirling flow section 5, and this ice nucleus generating means 6 is the trigger substance 'thermo module' mechanical shock / ultrasonic wave as described above. The mechanism power to add.

[0018] The remaining supercooled water and ice, which have been partially subcooled by the swirling flow (and the ice nucleus generating means), pass through a jet nozzle 7a provided in the center of the nozzle plate 7. It is pumped to the upper jet 8. At this time, the ice-water mixture at the center where the supercooling release has progressed to some extent due to the swirling flow is preferentially collected near the center due to the difference in specific gravity between ice and water. The supercooled water is collected.

Subsequently, in the jet part 8 which is the central part of the cylindrical housing 12, the jet containing ice and supercooled water flows in a convection up and down as shown in FIG. The supercooling of the remaining supercooling water can be released almost completely. As a result, most of the supercooling is released by the swirling flow and jet flow, and ice water with a high ice-making rate is sent from the ice water outlet pipe 10 provided in the upper part of the cylindrical housing 12 to the ice water pipe 11. Will be.

[0020] Figure 3 shows the residual excess when the temperature of the supercooled water introduced into the ice making device is changed in three stages: -0.5 ° C, -1.2 ° C, and -2.0 ° C. It is a graph of coldness (the difference between the freezing point 0 ° C. and the temperature measured at the ice making device outlet). A is the residual supercooling degree according to the present invention, B is the residual supercooling degree when the supercooling is released only by jet agitation, and C is the residual supercooling degree when the supercooling is released only by swirling flow retention and stirring. It is. Each residual supercooling degree was measured at the ice making apparatus outlet. Special In addition, when the temperature of the supercooling water introduced into the ice making device is 0.5 ° C, the residual supercooling degree at the outlet of the ice making device becomes the largest, and ice adheres to the inside of the ice water piping and clogs the piping. Power The apparatus of the present invention can minimize the degree of residual supercooling [k], and can release supercooling to the extent that ice does not adhere inside the ice water piping. The present invention has demonstrated that the residual supercooling is significantly reduced.

Industrial applicability

[0021] In the ice making method and ice making device of the present invention as described in detail above, most of the supercooling is canceled by the swirling flow and the jet flow. Therefore, it is possible to release the supercooling more reliably, prevent the supercooled water from flowing out of the outlet as it is, and prevent the residual supercooling degree from increasing, thereby increasing the ice making rate. In addition, since the supercooling is reliably released, it is possible to prevent the ice from accumulating and accumulating inside the ice water piping due to the residual supercooling water. There is something.

Brief Description of Drawings

FIG. 1 is a front view, partly in section, illustrating an ice making device according to the present invention.

FIG. 2 is a plan view showing an ice making device according to the present invention.

FIG. 3 is a graph showing the effect of the ice making device according to the present invention in comparison with the prior art.

Claims

The scope of the claims

[1] In an ice making method that releases supercooling without releasing the supercooled water generated by the supercooler to the atmosphere,

Lower partial force of vertical cylindrical housing Introduce supercooling water horizontally and tangentially,

Ice generated while releasing supercooling by swirling flow is collected near the cylindrical axis, and supercooled water and ice are jetted from a nozzle provided near the cylindrical axis above the lower portion of the cylindrical housing. Pumped to the center,

The supercooling of the remaining supercooling water is released by flowing so that the jet flows in a convection up and down in the central portion,

An ice making method using supercooled water, wherein most of the supercooling is released by swirling flow and jet flow.

[2] In an ice making device that releases supercooling without releasing the supercooled water generated by the supercooler to the atmosphere,

A supercooler that produces supercooled water;

An ice making unit including a vertical cylindrical housing;

An introduction pipe for introducing supercooling water horizontally and tangentially in the lower part of the cylindrical housing;

A swirling flow portion located in a lower portion of the cylindrical housing and releasing supercooling by swirling flow;

An ice nucleus generating means for generating ice nuclei provided in the vicinity of the swirling flow portion to trigger supercooling cancellation;

A jet nozzle provided in the vicinity of the cylindrical axis above the lower part, and the ice / water mixture at the center part where the supercooling release has progressed to some extent by the swirling flow is selectively transferred to the central part of the cylindrical nozzle A jet nozzle to supply with,

A jet section for releasing supercooling by jetting ice water having a residual supercooling degree sent from the swirling flow section at a central portion of the cylindrical housing;

The upper part of the cylindrical housing removes ice water from which most of the supercooling has been released by the jet. With an ice water outlet pipe

An ice making device using supercooled water, wherein most of the supercooling is released by swirling flow and jet flow.

The ice making device according to claim 2, further comprising a phase change propagation preventing means for preventing a phase change from propagating between the subcooler and the introduction pipe.