JP4664884B2 - Supercooler release - Google Patents

Description

  The present invention relates to a supercooling release device used in an ice making device that generates ice water slurry that is a mixture of a large number of ice particles and water by releasing the supercooled state of the supercooled water. The supercooling release device which cancels the supercooling state of the supercooling water introduced to the inside of the device and continuously sends out the ice water slurry generated by the supercooling release.

  Conventionally, as this type of supercooling release device, as shown in FIG. 5, an introduction pipe of supercooling water Ws is provided at the center of the other end bottom portion 4b of the bottomed cylindrical container 4K having a slurry delivery port 6a formed at one end. 5, the supercooling water Ws is introduced into the vessel from the discharge port 5a of the introduction pipe 5 toward the slurry delivery port 6a at one end of the vessel body, and the one end side of the vessel body 4K is placed at its end side. There has been proposed a taper portion 4a (conical shape) whose inner diameter gradually decreases to the diameter of the slurry delivery port 6a (see Patent Documents 1 to 3).

  That is, in this supercooling release device, the supercooling water flow path is reduced by increasing the diameter of the supercooling water flow path by connecting the small diameter introducing pipe 5 to the large diameter vessel bottom 4b. In this state, the ice water slurry S is flowed from the bottom 4b at the other end of the container toward the slurry outlet 6a at one end of the container, and the supercooled state of the introduced supercooling water Ws is continuously released in the flow process in the container. (I, W) is continuously generated, and the ice water slurry S is continuously sent out from the slurry outlet 6a at one end of the vessel through the tapered portion 4a.

  In addition, the body 4K of this supercooling release device is equipped with a release inducing device 4c that induces the release of the supercooling state by mechanical vibration or ultrasonic waves. When the supercooling release chain is maintained even without induction by the induction device 4c, the operation of the release induction device 4c may be limited only to the start of the device.

JP-A-5-149653 JP-A-11-83252 JP 2006-98000 A

  By the way, the above conventional supercooling releaser discharges the supercooling water Ws from the inlet pipe discharge port 5a in the direction of the cylindrical axis of the container body 4K and introduces it into the container. Compared to a supercooling release device that discharges from the inlet pipe discharge port in the tangential direction of the inner peripheral surface of the device and introduces it into the device, the supercooling release caused by the collision with the inner surface of the device causes It is possible to more reliably prevent ice deposition and accumulation, and there is an advantage that the operational stability of the ice making apparatus can be improved accordingly.

  However, in this type of supercooling releaser, it is also possible that ice deposition and deposition occur on the downstream side due to the supercooling water Ws incompletely released from the supercooling being sent out from the slurry delivery port 6a. However, in the conventional supercooling release device, the supercooling water Ws is linearly passed from the inlet pipe discharge port 5a to the slurry delivery port 6a, so that the flow path is expanded. Although the internal flow rate of the supercooling water Ws is reduced depending on the diameter, the length of the body required to completely release the supercooling water Ws in the chamber becomes large, and the supercooling release is still incomplete. In order to prevent the ice from accumulating on the inner surface of the tapered portion caused by the release of the supercooling caused by the collision of the supercooling water Ws with the inner surface of the tapered portion 4a on the one end of the vessel body, the inclination of the inner surface of the tapered portion 4a is prevented. Be relaxed enough This also increases the required length of the container, which increases the required space for the supercooling release device, lowers the installation and versatility of the ice making device, and increases the device cost. there were.

  In view of this situation, the main problem of the present invention is a supercooling release device that can effectively prevent the adhesion and accumulation of ice while being small and compact, and can ensure high operational stability in ice making operation. Is to provide

[1] In the first characteristic configuration of the present invention, the supercooled water continuously introduced from the introduction pipe is released from the supercooled state in the vessel, and the ice water slurry generated by the release of the supercooling is released to the outside. It relates to a supercooling release unit that delivers continuously.
The vessel body has a bottomed cylindrical shape with a slurry delivery port formed at one end side in the cylinder axis direction and the other end closed, and the supercooled water from the introduction pipe is supplied to the inside of the vessel body at the other end of the vessel body. The discharge port of the introduction pipe is arranged in a state of discharging toward the bottom.

  That is, in the supercooling release device of this first characteristic configuration, supercooling water is discharged from the inlet tube discharge port toward the bottom of the other end of the device body, so that the introduction tube discharge port is directed toward the bottom of the other device body. After the flow, the water flow is reversed in the vicinity of the bottom of the other end of the container body, and then the water flow form in the container that flows in the opposite direction toward the slurry discharge port on the one end side of the container body is formed.

  And in this vessel water flow form, a large number of ice particles generated by the release of supercooling in the process leading to the reverse flow after inversion at the bottom of the vessel is introduced by accompanying the reverse water flow. The introduced supercooled water continuously discharged from the pipe discharge port and directed to the bottom of the other end of the vessel body collides with a large number of ice particles in the opposite direction, thereby introducing the introduced supercooled water toward the bottom of the other end of the vessel body. Effectively promotes supercooling release. Moreover, even if the reverse water flow from the bottom of the vessel is still incomplete in the supercooling release by effectively increasing the amount of ice particles in the water flow toward the bottom of the vessel by this release promotion, Collision with a large number of ice particles in the water flow toward the bottom of the body, the supercooling release of the incomplete part in the reverse water flow is also effectively promoted by interaction.

  Furthermore, a so-called cavity tone oscillation phenomenon occurs in which the discharge water flow from the discharge pipe discharge port and the water flow mass near the bottom of the vessel shakes in the opposite direction due to the interaction between the two, which effectively causes the water in the vessel to flow effectively. It can be expected that supercooling release is promoted by stirring and mixing.

  That is, it is possible to effectively promote the supercooling release of the introduced supercooling water in the supercooling releaser as a whole, thereby reducing the length of the vessel compared to the conventional supercooling releaser described above. However, the supercooling water introduced in the supercooling release unit can be completely released from the supercooling water, and the supercooling water still incompletely released from the supercooling release is sent downstream from the slurry delivery port. It is possible to sufficiently prevent troubles caused by ice adhesion and accumulation on the downstream side.

  In addition, since supercooled water is discharged from the inlet pipe discharge port in the direction of the cylindrical axis of the container, it is introduced into the container. Compared to the supercooling release device that discharges and introduces into the vessel, the function that can more reliably prevent the adhesion and accumulation of ice on the inner surface caused by the release of the supercooling due to the collision with the inner surface of the vessel is maintained. Therefore, as a whole, it is possible to effectively prevent the adhesion and accumulation of ice in the vessel and on the downstream side, while ensuring high operational stability of the ice making device, It is possible to provide an excellent supercooling release device that can effectively achieve downsizing of the ice making device, improvement of installation and versatility, and reduction of the device cost.

  In the implementation of the first characteristic configuration, the body of the supercooling release device is equipped with a release inducing device that induces the release of the supercooling state by mechanical vibration, ultrasonic waves, etc. If the supercooling release chain is maintained without triggering by the release inducing device after starting, the operation of the release inducing device may be limited only to the start of the device.

  In addition, the separation dimension between the inlet pipe discharge port and the bottom of the container body can prevent ice from accumulating and accumulating on the bottom of the container body due to the release of supercooling due to the collision of the introduced supercooling water with the bottom of the container body. What is necessary is just to determine suitably by the range.

  By the way, with respect to the dimensions of each part of the container, the diameter D of the container is set to be three times or more the diameter d of the introduction pipe discharge port, and the separation dimension L between the introduction pipe discharge port and the bottom of the container body is set to that of the introduction pipe discharge port. It is desirable to make it 15 times or more of the diameter d (see FIG. 2).

  The installation posture of the bottomed tubular body is not limited to the vertical posture in which the slurry delivery port is located at the top and the bottom of the vessel is located at the bottom. You may make it a reverse vertical attitude | position which is located in the upper part and a slurry delivery outlet is located below.

  The supercooling water to be subjected to the supercooling release is not limited to the supercooling water of pure water or general tap water, but may be supercooling water of an aqueous solution such as so-called brine.

  It is preferable that the one end side of the container body where the slurry delivery port is provided has a taper shape in which the inner diameter gradually decreases to the diameter of the slurry delivery port. Since the introduced supercooled water can be efficiently released in an appropriate state by promotion, it is not always necessary to make the one end of the vessel into a tapered shape. For example, a simple bottomed tubular shape other than the tapered shape is used. In addition, the slurry delivery port formed at one end of the container body is not limited to the structure opened in the container toward the bottom of the other end of the container body, and various opening structures can be adopted.

[2] The second characteristic configuration of the present invention specifies an embodiment suitable for the implementation of the first characteristic configuration.
The container body is in a vertical posture in which the slurry delivery port on one end side of the container body is located at the top and the bottom part at the other end of the container body is located below.

  That is, according to the second feature configuration, after the reversal at the bottom of the container body, the reverse water flow that flows in the container toward the slurry delivery port on the one end side of the container body becomes an upward water flow. ) Ascending movement of a large number of ice particles accompanying the water flow is promoted by the buoyancy of the ice particles, and the impact of collision between the large number of ice particles and the introduced supercooled water discharged downward from the inlet pipe discharge port is enhanced. Accordingly, the supercooling release of the introduced supercooling water in the supercooling releaser can be more effectively promoted, and the miniaturization of the supercooling releaser can be achieved more effectively. be able to.

[3] The third characteristic configuration of the present invention specifies an embodiment suitable for the implementation of the first or second characteristic configuration.
An ice propagation preventing water discharge port for discharging ice propagation preventing water at 0 ° C. or more toward the bottom of the other end of the vessel body is provided in an annular arrangement surrounding the discharge port of the introduction pipe.

  In other words, in this type of supercooling release device, if ice particles from the supercooling release adhere to the inlet pipe discharge port (particularly the inner surface of the discharge port) for some reason, the ice adheres from the attached ice particles as a starting point. Propagates along the inner surface of the introduction pipe to the upstream side of the introduction pipe, and this ice propagation causes operational troubles such as freezing trouble in the upstream subcooler (supercooling water generator). Sometimes.

  On the other hand, according to the third characteristic configuration, the water flow for preventing ice propagation (in other words, the flow of water for preventing ice propagation discharged from the annularly arranged ice propagation preventing water outlet surrounding the introduction pipe outlet to the bottom of the other end of the vessel body). , A water flow layer of 0 ° C. or higher that surrounds the discharge supercooled water flow from the discharge pipe discharge port), and in the form that the water flow layer of 0 ° C. or higher serves as a temperature barrier, As a result, it is possible to effectively prevent the ice from propagating to the upstream side as described above. Combined with the fact that it is possible to effectively prevent the deposition and deposition of the ice, the operational stability of the ice making device can be further effectively improved.

  The ice propagation preventing water is not limited to pure water or general tap water, as is the case with the supercooling water to be subcooled, and may be an aqueous solution such as brine. The supercooled water to be released may be either the same type of water or aqueous solution, or different types of water or aqueous solution.

  FIG. 1 shows an ice making device, 1 is an ice storage tank for storing an ice water slurry S, which is a mixture of ice particles I and water W, and 2 is a container for storing water W taken from the lower part of the ice storage tank 1 through a water intake passage 3. The subcooler 4 generates supercooled water Ws (for example, water at −2 ° C.) by cooling it to below the freezing point without changing the phase as raw water for generating cooling water. This is a supercooling canceller that cancels the supercooling state of the supplied supercooling water Ws in the chamber.

  That is, in this ice making device, the supercooling water Ws is continuously introduced from the supercooler 2 through the introduction pipe 5 to the supercooling releaser 4, and the supercooling state of the supercooling water Ws is changed to that of the supercooling releaser 4. The ice water slurry S is released from the supercooling releaser 4 and continuously sent out from the supercooling releaser 4 to the ice feed path 6 and is sent out. The ice water slurry S is stored in the ice storage tank 1. The ice water slurry S in the ice storage tank 1 is used as, for example, a cooling heat source for cooling in an air conditioner, and the ice particles I in the ice water slurry S are melted by the use as the cooling heat source. It is taken out from the intake channel 3 as raw water for generating cooling water.

  As shown in FIGS. 2 and 3, the supercooling release device 4 has a container body 4K having a diameter larger than that of the introduction pipe 5, and forms a slurry delivery port 6a for the ice feeding path 6 at one end side in the cylinder axis direction. The other end is closed-bottomed cylindrical, and the one end side of the vessel body is a tapered portion 4a whose inner diameter gradually decreases to the diameter of the slurry delivery port 6a. The outlet 6a is positioned at the top, and the bottom 4b at the other end of the body is positioned in a vertical posture.

  Further, the leading end portion of the introduction pipe 5 from the supercooler 2 is inserted into the vessel of the supercooling releaser 4 from the side of the vessel body and bent toward the bottom side of the other end of the vessel body. The discharge port 5a of the introduction pipe 5 is arranged in a state in which the supercooling water Ws is discharged from the center of the supercooling releaser 4 toward the bottom 4b at the other end of the body.

  The separation dimension between the introduction pipe discharge port 5a and the container bottom part 4b is such that the supercooling water Ws discharged from the introduction pipe discharge port 5a collides with the container bottom part 4b, so that the supercooling is released and the container bottom part 4b The size is such that it is possible to prevent the occurrence of ice deposition.

  In other words, in the supercooling release device 4, the supercooling water Ws is discharged from the introduction tube discharge port 5a toward the bottom portion 4b at the other end of the device body, whereby the introduction tube discharge port 5a is discharged to the bottom portion 4b at the other end of the device body. After the flow f <b> 1, the water flow is reversed in the vicinity of the bottom of the other end of the vessel body, and then the water flow form in the vessel flows in the opposite direction toward the slurry discharge port 6 a on the one end side of the vessel body.

  And in this water flow form in the vessel, many ice particles I generated by the supercooling release in the process up to the reverse flow f2 after reversal at the vessel bottom 4b are caused to accompany the reverse flow f2. Thus, the introduced supercooled water Ws continuously discharged from the inlet pipe discharge port 5a and directed toward the bottom 4b at the other end of the vessel body collides with a large number of ice particles I in the reverse water flow f2, thereby The supercooling release of the introduced supercooling water Ws toward the bottom 4b at the other end of the vessel body is effectively promoted in a form in which the impact resistance of the collision is enhanced by buoyancy to promote the supercooling release. Further, by effectively increasing the amount of ice particles in the water flow f1 toward the container bottom 4b by this release promotion, the reverse water flow f2 from the container bottom 4b is still incomplete in the supercooling release. However, due to the collision with a large number of ice particles I in the water flow f1 toward the vessel bottom 4b, the supercooling release of the incomplete portion in the reverse water flow f2 is also effectively promoted by the interaction.

  That is, by promoting the supercooling release of the introduced supercooling water Ws in the supercooling releaser 4 in this way, the supercooling releaser 4 is introduced in the supercooling releaser 4 while reducing the body length. The cooling water Ws can be completely released from supercooling.

  4c is a release induction device equipped in the supercooling release device 4, and the release induction device 4c induces the release of the supercooling state in the supercooling release device 4 by applying mechanical vibrations and ultrasonic waves. However, when the supercooling release chain is maintained even if there is no induction by the release induction device 4c after the supercooling release chain has started once, the operation of the release induction device 4c is limited to the time of starting the device. There is also.

  As shown in FIG. 2, an outer tube 7 surrounding the introduction tube 5 is provided in the downstream portion of the introduction tube 5, and downstream of the annular flow path 8 formed between the outer tube 7 and the introduction tube 5. The side opening 8a is used as a spout for preventing ice propagation, and is opened in the vessel of the supercooling releaser 4 toward the vessel bottom 4b in an annular arrangement surrounding the introduction tube discharge port 5a. A bypass channel 9 branched from the intake channel 3 to the supercooler 2 is connected to the (non-retractor side) as a supply channel for the ice propagation preventing water Wh.

  That is, in this ice making device, a part of the raw water W for generating supercooling water supplied to the supercooler 2 through the intake passage 3 is diverted and supplied to the upstream side of the annular flow path 8 through the bypass passage 9. The diversion raw water of 0 ° C. or more is discharged as ice propagation preventing water Wh from the water discharge port 8a for preventing ice propagation toward the body bottom portion 4b, thereby surrounding the supercooled water discharge flow from the introduction pipe discharge port 5a. In addition, a water flow layer of the ice propagation preventing water Wh at 0 ° C. or higher is formed.

  That is, if ice particles I due to supercooling release adhere to the opening of the inlet tube discharge port 5a (particularly the inner surface portion of the discharge port) for some reason, the ice adhesion propagates through the inner surface of the inlet tube 5 starting from the attached ice particles I. However, there is a risk that ice propagation that propagates upstream of the inlet pipe will cause troubles such as freezing trouble in the upstream subcooler 2 due to this ice propagation. The discharge of the propagation preventing water Wh prevents the ice particles I from adhering to the inlet pipe discharge port in a form where the water flow layer of 0 ° C. or higher is used as a temperature barrier, thereby preventing the ice to the upstream side as described above. Prevent propagation.

  In order to ensure the prevention of ice propagation, the supply flow rate of the ice propagation prevention water Wh is set to 2% or more of the supercooling water supply flow rate to the supercooling releaser 4.

[Another embodiment]
Next, another embodiment will be listed.

  The container 4K of the supercooling release device is formed into a bottomed cylindrical shape in which the slurry delivery port 6a is formed on one end side in the cylinder axis direction and the other end is closed. Various modifications are possible, not limited to the shape shown in the form. For example, as shown in FIG. 4, one end side of the container body 4K is bent so that the slurry delivery port 6a extends in the direction of the cylinder axis of the container body 4K. Adopted a structure that opens in a direction orthogonal to or obliquely with respect to the inlet tube 5 and linearly enters the vessel along the cylindrical axis direction of the vessel body 4K from the bent portion on one end side of the vessel body 4K. May be.

  Moreover, although the example which makes the container 4K of the supercooling releaser 4 cylindrical shape was shown in the above-mentioned embodiment, you may make the body 4K of the supercooling releaser 4 square tube shape depending on the case.

  Instead of using a part of the raw water W for generating supercooling water supplied to the subcooler 2 as the water Wh for preventing ice propagation, water other than the raw water W for generating supercooling water supplied to the subcooler 2 is used. You may make it the structure used as the water Wh for ice propagation prevention.

  Further, when a part of the raw water W for generating the supercooling water supplied to the subcooler 2 is used as the ice propagation preventing water Wh, and different from the raw water W for generating the supercooling water supplied to the subcooler 2. In any case where water is used as the ice propagation preventing water Wh, heating means for heating the ice propagation preventing water Wh supplied to the periphery of the outflow supercooling water flow Ws from the introduction pipe 5 to a predetermined temperature is additionally provided. You may do it.

  In the implementation of the present invention, the water to be subcooled and the water for preventing ice propagation are not limited to pure water or purified water, but may be an aqueous solution such as brine depending on circumstances.

  The ice making device according to the present invention is not limited to a cold heat source device in an air conditioning facility, but can be used for various applications requiring ice.

Overall configuration of ice making equipment Longitudinal section of the supercooler Cross section of the subcooler Longitudinal sectional view of a supercooling releaser showing another embodiment Longitudinal section of a conventional supercooler

Explanation of symbols

5 Introducing pipe Ws Supercooled water S Ice water slurry 4K Body 6a Slurry outlet 4b Bottom of other end of body 5a Inlet pipe outlet Wh Water for preventing ice propagation 8a Water outlet for preventing ice propagation

Claims (3)

A supercooling release unit that releases the supercooling state of supercooling water continuously introduced from the introduction pipe in the vessel and continuously sends out ice water slurry generated by the supercooling release. ,
The vessel body has a bottomed cylindrical shape with a slurry delivery port formed at one end side in the cylinder axis direction and the other end closed, and the supercooled water from the introduction pipe is supplied to the inside of the vessel body at the other end of the vessel body. A supercooling release device in which the discharge port of the introduction pipe is arranged in a state of discharging toward the bottom.   The supercooling releaser according to claim 1, wherein the container is in a vertical posture in which the slurry delivery port on one end side of the container body is located at the top and the bottom part at the other end of the container body is located below.   2. An ice propagation preventing water discharge port for discharging ice propagation preventing water of 0 ° C. or more toward the bottom of the other end of the vessel body is provided in an annular arrangement surrounding the discharge port of the introduction pipe. Or the supercooling release device of 2.

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