JP3096736U - Pre-cooling device - Google Patents

Abstract

(57) [Summary] [Problem] To reduce pre-cooling time,
Provided is a pre-cooling device capable of preventing cell breakage. SOLUTION: This pre-cooling device 11 has a triple point cell T of water.
Chamber 19 for storing and circulating a refrigerant for cooling
A coolant supply unit 13 for supplying a coolant to the cooling chamber 19, and one end connected to the coolant supply unit 13 to allow the coolant to pass therethrough, and the main body is connected to the cooling chamber 1.
9 is provided so as to surround the triple point cell T of water, the other end is opened in the cooling chamber 19 and the refrigerant supply tube 21 for discharging the refrigerant, and one end is provided in the cooling chamber 1.
9, the other end is connected to the refrigerant supply unit 13, and the refrigerant in the cooling chamber 19 is supplied to the refrigerant supply unit 1.
And a return pipe 29 for returning to the position 3.

Description

[Detailed description of the device]

[0001]

[Technical field to which the device belongs]

  The present invention relates to a precooling device for precooling an object to be cooled.

[0002]

[Problems to be solved by conventional techniques and devices]

  In 1990, Triple Point of water, which is one of the defined fixed points of the international temperature scale,  of water (TPW) is a glass that generally contains water with the same isotopic composition as ocean water. It was realized by putting ice on a cell made of Su. Generally, a water triple point (TWP) cell If you want to add ice to the ice, put it in an ice bath such as a Dewar jar filled with ice cubes before ice Pre-cool the cell. For pre-cooling of TPW cells, for example, place TPW cells in a bottle of Dewa. And pack it in ice using ice cutting. The icing is the temperature of the TPW cell As a rule of thumb, the temperature inside the well is kept below 2 ° C.

[0003]   However, it takes about 1 hour to reach this temperature, and in some cases about 2 hours. It takes time. In addition, when calibrating TPW cells, when handling multiple cells There are many cases, but when iced to them, it takes time to precool and it is efficient I can't work. Also, when filling the dewar with ice cubes, the cells should not be damaged. It cannot be said that there is no possibility of letting it go.

[0004]   The present invention has been made to solve the above problems, and can shorten the precooling time. With the aim of providing a pre-cooling device that can prevent damage to the cell is doing.

[0005]   If the temperature of the ice used for precooling is considered to be 0 ° C, precooling at a lower temperature will speed It seems self-evident that the temperature goes down. Initially, the TPW cell is stored and cooled A prototype cooling chamber was created and the liquid cooled to -10 ° C was injected into it. I have cooled the TPW cell, but this method does not cool it as quickly as I expected It was Therefore, the cell is cooled by applying some flow to the cooled liquid. As a result, the temperature in the well of the thermometer of the TPW cell fell below 2 ° C. in about 15 minutes. . From the above, a method of circulating a cooled liquid around the TPW cell to precool it The pre-cooling device according to the present invention has been devised.

[0006]

[Means for Solving the Problems]

  A first feature of the present invention is a cooling container that stores and circulates a refrigerant that cools a body to be cooled. And a refrigerant supply device for supplying a refrigerant to this cooling container, and one end of the refrigerant supply device The cooling medium passes through the inside of the cooling container, and the main body installs the cooled object inside the cooling container. A cooling medium supply unit that is disposed so as to surround it and has the other end opened into the cooling container to discharge the cooling medium. One end of the supply tube communicates with the inside of the cooling container, and the other end contacts the refrigerant supply device. And a return pipe for returning the refrigerant in the cooling container to the refrigerant supply device. That is.

[0007]   The second feature of the present invention is that the cooling container has a bottomed cylindrical shape.

[0008]   A third feature of the present invention is that the refrigerant supply tube is provided along the inner circumference of the cooling container. It is arranged in a spiral shape.

[0009]   A fourth feature of the present invention is that the discharge port of the refrigerant supply tube in the cooling container is At the bottom of the cooling container, it is oriented in the circumferential direction of the cooling container. .

[0010]   A fifth feature of the present invention is that the refrigerant supply tube has plasticity.

[0011]   A sixth feature of the present invention is that the refrigerant supply tube has a temperature range of -20 ° C to + 80 ° C. It is made of a material that does not harden in the surrounding area.

[0012]   The seventh feature of the present invention is that the refrigerant is a medium that has fluidity at operating temperature. Is.

[0013]   The eighth characteristic of the present invention is that the return pipe is opened to a side wall of the cooling container. Is that

[0014]

[Embodiment of device]

  Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 to 3.

[0015]   In FIG. 1, reference numeral 11 indicates a precooling device which is an embodiment of the present invention. this The pre-cooling device 11 also serves to pre-cool a triple point water cell (hereinafter referred to as a TPW cell). Therefore, it has the refrigerant supply unit 13 for supplying the refrigerant for precooling.

[0016]   This refrigerant supply unit 13 has a refrigerator 15 for cooling the refrigerant. . This refrigerator 15 has a built-in heater, and a -20 The temperature can be set in the range of ℃ to + 80 ℃. However, usually The temperature is set to -10 ° C based on the results of preliminary experiments and the required time for precooling. cold The time required to cool the medium from room temperature to -10 ° C is about 1 hour. Also, TP A mixed liquid of water and ethanol is used as a coolant for cooling the W cell. this Is to prevent the refrigerant from freezing when used at 0 ° C. or lower. The set temperature is Although the temperature is -10 ° C, the TPW cell continues to be cooled in this state and the water in the cell is overheated. It does not recover immediately after cooling. In the experiment using multiple TPW cells, None of the cells recover from overcooling after 30 minutes or more There was no ice in the cell. Therefore, during the pre-cooling assumed by this device, It is considered that ice does not adhere to the TPW cell.

[0017]   A circulation pump for supplying the refrigerant cooled by the refrigerator 15 to the refrigerator 15. 17 is connected.

[0018]   Further, this precooling device 11 has a cooling chamber 19 for cooling the TPW cell. There is. The cooling chamber 19 is made of an acrylic resin formed in a bottomed cylindrical shape. The TPW cell is stored by circulating or storing a refrigerant inside. It is designed to cool. The cooling chamber 19 has a plastic silicone. A refrigerant supply tube 21 made of a transparent tube is provided. This refrigerant supply One end 21a of the tube 21 is provided with a flow rate adjusting valve 23 for adjusting the flow rate of the refrigerant. It is connected to the circulation pump 17. Then, of the refrigerant supplied by the circulation pump 17, The flow rate is adjusted by the flow rate adjusting valve 23. This refrigerant supply tube The main body portion 21b of 21 is spirally arranged along the inner peripheral surface of the cylindrical cooling chamber 19. It is set up. The spiral body portion 21b of the refrigerant supply tube 21 is simply cooled. In addition to supplying the medium, it also has a role as a heat exchanger. That is, this main body 21 By b, the refrigerant in the cooling chamber 19 which is in contact with the main body portion 21b is cooled. And is placed inside the refrigerant supply tube 21 by the cooled refrigerant. The existing TPW cell is cooled uniformly. Further, the refrigerant supply tube 21 is made of plastic. Since the TPW cell is arranged to surround the TPW cell, It also has a function to protect the impact from shock. On the other hand, the other end 21 of the refrigerant supply tube 21 c is the bottom of the cooling chamber 19 in which the discharge port 25 is opened in the circumferential direction. I'm talking. Then, the refrigerant discharged from the discharge port 25 is cooled by the cooling chamber 19 It is designed to move spirally upward while rotating inward. Obey Thus, the circulation of the refrigerant can quickly cool the TPW cell.

[0019]   A discharge port 27 is provided on the side wall of the cooling chamber 19. A return pipe 29 is connected to the port 27. The return pipe 29 is connected to the refrigerant supply unit. Refrigerant connected to the refrigerator 15 of the unit 13 and supplied to the cooling chamber 19. Is collected by the refrigerator 15 from the outlet 27 through the return pipe 29. There is.

[0020]   In such a configuration, in order to precool the TPW cell, first, the refrigerant supply unit is Activate the hood 13. Then, the refrigerant in the refrigerator 15 flows through the refrigerant supply tube 21. It is supplied to the inside of the cooling chamber 19 and circulates in the cooling chamber 19. And The refrigerant is collected in the refrigerator through the return pipe 29.

[0021]   In this state, the TPW cell T is placed inside the refrigerant supply tube 21 in the cooling chamber 19. Then, the TPW cell is pre-cooled.

[0022]   Here, the refrigerant may overflow depending on the size and shape of the TPW cell T. However, the cooling flow rate control valve 23 is used to send the cooling air to the cooling chamber 19. The flow rate of the medium is adjusted and the amount of liquid in the chamber is adjusted according to the cell.

[0023]   As described above, in the precooling device 11, the refrigerant for cooling the TPW cell T is stored. A cooling chamber 19 for circulation and a refrigerant supply for supplying a refrigerant to this cooling chamber 19. The supply unit 13 and one end of the supply unit 13 are connected to each other, and And the main body is disposed inside the cooling chamber 19 so as to surround the TPW cell T. And a refrigerant supply tube 21 whose other end opens into the cooling chamber 19 to discharge the refrigerant. And one end communicates with the inside of the cooling chamber 19 and the other end with the refrigerant supply unit 13. Return pipe connected to return the refrigerant in the cooling chamber 19 to the refrigerant supply unit 13. 29, the refrigerant can be circulated in the cooling chamber 19, Therefore, the TPW cell can be rapidly precooled. Also, the refrigerant supply tube 2 1 is arranged so as to surround the TPW cell T, the refrigerant supply tube 21 Acts as a heat exchanger, and the refrigerant supply tube 21 allows the cooling chamber 19 The refrigerant inside is cooled, and the TPW cell is uniformly cooled by this cooled refrigerant. be able to.

[0024]   Further, the cooling chamber 19 has a bottomed cylindrical shape, and the refrigerant supply tube 21 is Since it is spirally arranged along the inner circumference of the cooling chamber 19, the refrigerant supply tube is The bumps 21 can be uniformly distributed around the TPW cells T. Therefore, the refrigerant supply The TPW cell can be evenly cooled from the supply tube 21 through the refrigerant and precooled. Can be done promptly.

[0025]   Further, the discharge port 25 in the cooling chamber 19 of the refrigerant supply tube 21 is provided with a cooling cheek. At the bottom of the chamber 19, since it faces the circumferential direction of the cooling chamber 19, the cooling The cooling medium can be agitated spirally in the cooling chamber 19 and thus the TPW sewer The cooling of the solder T can be performed more quickly and uniformly.

[0026]   In addition, the refrigerant supply tube 21 is a silicon tube having plasticity. In addition, the TPW cell is arranged so as to surround it, so that the TPW cell is protected from impact. You can

[0027]   In addition, the refrigerant is a mixture of water and ethanol, which prevents the refrigerant from freezing. can do.

[0028]   FIG. 2 shows a precooling device 51 of another embodiment. This precooling device 51 Includes the refrigerant supply unit 13 of the pre-cooling device 11 shown in FIG. In addition, it has a cooling tank 55 for cooling the cooling chamber 19 with cooling water. Therefore, the precooling device 51 can perform the precooling work more efficiently.

[0029]   Next, an experimental example using such a precooling device 11 will be described.

[0030]   FIG. 3 shows precooling performed by setting the apparatus at −10 ° C. and 0 ° C., and using ice cutting. The temperature change in the well of the thermometer of the TPW cell during precooling is there. The results are averages of measurements performed 5 times each. Time is TPW It varies slightly depending on the size of the package. The temperature inside the thermometer well in this experiment is The inside of the thermometer well filled with ethanol was measured using a platinum resistance thermometer. Of. Also, in this experiment, water and ethanol were used as the coolant for cooling the TPW cell. Was used.

[0031]   From FIG. 3, in the case of precooling using ice cutting, the temperature in the thermometer well of the TPW cell is It takes about 100 minutes for the temperature to drop below 2 ° C. It can be seen that it takes about 13 minutes. Also, set the preset temperature of this device to 0 ° C Even when cooled, it is possible to cool it faster than when using ice shavings. here , These times are for the case of using a relatively large TPW cell, Depending on the temperature, the precooling time will vary somewhat.

[0032]   In the case of normal precooling, the water in the TPW cell is cooled and kept at a certain temperature. An anneal to relieve stress in water and keep it stable by holding Can be considered as being done. The pre-cooling by this device is suitable for pre-cooling by ice cutting. Compared with this, the water in the TPW cell is cooled rapidly, so there is some effect on the water in the cell. Well, it is possible to think that it may affect the triple point temperature. So As a result of measuring the realization temperature of the triple point of water in different precooling methods, a significant difference was found. Was not seen.

[0033]   By using the device tested this time, the TPW cell is sufficiently precooled in about 13 minutes. You can Also, in the process of icing the TPW cell, there are many complicated operations, The work efficiency can be considerably improved. In addition, the water triple point application that was previously filed Use with the method and device for ice-making of ice cream (Patent Application No. 2002-78653) This will allow the TPW cell placed at room temperature to be frozen in about 23 minutes. It is quite useful in business. In addition, this device is equipped with a temperature controller for the refrigerator. By adjusting, it becomes possible to temporarily store the TPW cell that has been iced, and it is easy It can also be used as a holding tank for various TPW cells and has excellent versatility. There is.

[0034]

[Effect of device]

  As described above, in the pre-cooling device of the present invention, the refrigerant that cools the object to be cooled. A cooling container that stores and circulates the refrigerant, and a refrigerant supply device that supplies a refrigerant to the cooling container. , One end is connected to the refrigerant supply device, the refrigerant passes through the inside, and the main body is Is placed inside the container so as to surround the object to be cooled, and the other end is opened inside the cooling container. A refrigerant supply tube that mouths and discharges the refrigerant, and one end communicates with the inside of the cooling container, The other end is connected to the refrigerant supply device to transfer the refrigerant in the cooling container to the refrigerant supply device. Since it has a return pipe for returning to the storage, it is possible to shorten the precooling time. Moreover, damage to the cooled object can be prevented.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram showing a precooling device according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a precooling device according to another embodiment of the present invention.

FIG. 3 is a diagram showing a change in temperature in a thermometer well of a triple point cell of water due to a difference in precooling method.

[Explanation of symbols]

11 Pre-cooling device 13 Refrigerant supply unit 15 refrigerator 17 Circulation pump 19 Cooling chamber 21 Refrigerant supply tube 25 outlets 27 outlet 29 Return piping

Claims (8)

[Scope of utility model registration request] 1. A cooling container for storing and circulating a cooling medium for cooling an object to be cooled; a cooling medium supply device for supplying the cooling medium with the cooling medium; one end of which is connected to the cooling medium supply device so that the cooling medium passes through the inside thereof. A main body is provided inside the cooling container so as to surround the object to be cooled, and the other end opens into the cooling container to discharge a refrigerant, and one end communicates with the inside of the cooling container. And a return pipe that has the other end connected to the refrigerant supply device and returns the refrigerant in the cooling container to the refrigerant supply device. 2. The pre-cooling device according to claim 1, wherein the cooling container has a bottomed tubular shape. 3. The precooling device according to claim 1, wherein the refrigerant supply tube is spirally arranged along the inner circumference of the cooling container. 4. The discharge port in the cooling container of the refrigerant supply tube faces the circumferential direction of the cooling container at the bottom of the cooling container. The pre-cooling device according to any one of items. 5. The pre-cooling device according to claim 1, wherein the refrigerant supply tube has plasticity. 6. The refrigerant supply tube has a temperature range of −20 ° C. to +
The precooling device according to any one of claims 1 to 5, wherein the precooling device is made of a material that does not harden in the range of 80 ° C. 7. The precooling device according to claim 1, wherein the refrigerant is a medium having fluidity at a use temperature. 8. The precooling device according to claim 1, wherein the return pipe is opened to a side wall of the cooling container.