KR100332735B1 - A small system to refrigerate quickly - Google Patents

Abstract

The present invention relates to a small quenching system, and more particularly, to a liquefied cooling gas that can efficiently transport and deliver fish, such as fruits and vegetables, fish and shellfish, frozen fruit, fresh flowers, medicines, and other products stored under low temperature. The present invention relates to a small cooling system, which is easy to handle, has no problem of weight and space, and can provide necessary temperature management, thereby providing a compact cooling system capable of delivering and delivering highly efficient cryopreservation products.

The solution is to supply liquefied carbon dioxide gas to produce snow-shaped snow dry ice, and then compress the snow dry ice, or supply liquefied cooling gas to generate and cool snow dry ice, which is easily mounted on a vehicle. Since it can be transported easily, it can be used for preservation of foods and medicines at the time of delivery and delivery of cryopreserved products or during an emergency disaster, or for arbitrary use in construction sites, fishing boats, campgrounds and the like.

Description

A small system to refrigerate quickly}

The present invention relates to a small quenching system, more specifically a small cooling system using a liquefied cooling gas that can efficiently transport and deliver fish, such as fruits and vegetables, fish and shellfish, frozen fruit, fresh flowers, medicines and other products stored at low temperatures. It is about.

Conventionally, in the short distance transportation of fruits, vegetables, dairy products, cold and fresh fish, and other low-temperature preservation products, an insulated wall is mainly used by attaching an insulating wall inside the aluminum band rack to cool the inside with dry ice or ice. In addition, for long-distance transportation, transportation of frozen fish, frozen meat, and the like, the temperature in the cargo compartment must be maintained at a constant temperature. Thus, a refrigerator or a refrigerator vehicle having a refrigerator on the roof of the cab or in the upper part of the cargo compartment is used.

In this case, there is a method using the driving power of the vehicle and a method using a separate independent prime mover. Dry ice or ice cooling in the cargo compartment is not desirable in terms of cooling capacity and temperature control, making it difficult to keep the room at the required temperature over a long period of time and can therefore only be used for a very limited range of goods and local transport. In addition, the mechanical refrigerator is not only a considerable weight of the refrigerator, etc., but also requires a considerable space and costs a lot of maintenance.

In addition, there is a problem that the temperature management becomes more difficult if the door of the cargo compartment frequently opens and closes when loading and unloading.

As described above, it can be pointed out that there is a lot of problems in the conventional shipping and delivery of cryopreserved products, and that transportation efficiency is generally poor.

In addition, conventionally, when carrying the cryopreservation products, only cold ice can be added to the frozen confectionery, so this kind of product must be purchased last, so it is not possible to buy on the way. In this case, fish such as sashimi can be kept at room temperature even for a short time, so that freshness cannot be prevented, especially in the warm season.

The present invention aims to provide a compact quenching system which is easy to handle, has no problem of weight and space, and can also manage required temperature and can deliver and deliver a very efficient cryogenic preservation product.

The present invention comprises a liquefied gas cylinder, a cylinder holder for holding it, and an operation box installed on the cylinder holder, the operation box has a nozzle for injecting the liquefied gas supplied from the liquefied gas cylinder through the solenoid valve At the same time, the above problems are solved by a small quenching system, characterized in that it is provided with an operation switch for the injection control.

1 is an exploded perspective view showing an embodiment of the present invention.

FIG. 2 is a perspective view showing an installation example of the system shown in FIG. 1. FIG.

3 is a configuration diagram showing an operation box of the system shown in FIG.

4 is a block diagram showing a small cold container lid of the system shown in FIG.

5 is another configuration diagram of a small container lid of the system shown in FIG.

6 shows the action of the compression means of the lid of a small cold container of the system shown in FIG.

7 is a configuration diagram of a medium to large cold storage container of the system shown in FIG. 1.

8 is an installation diagram showing another embodiment of the present invention.

9A, 9B and 9C are graphs showing the effectiveness of the present invention.

Fig. 10 shows the construction and use of another embodiment of the present invention.

11 shows a structural example of a cold storage container according to still another embodiment of the present invention.

<Description of Symbols for Major Parts of Drawings>

1: gas cylinder 2: cylinder holder 3: operation box

5 hook hole 12 handle 19 container

19a: lid 23: nozzle 24: safety switch

25 operation switch 31 pressure sensor 35 arm

41 container 36 handle 47 large container

48: nozzle 52: gas discharge hole 40: cold storage material

Hereinafter, the present invention will be described in detail through the preferred embodiments illustrated in the accompanying drawings.

1 is a configuration diagram of a small quenching system according to the present invention, wherein 1 is a liquefied gas cylinder of liquefied carbon dioxide gas or liquefied nitrogen gas, and 2 is a cylinder holder for supporting a liquefied gas cylinder 1. Reference numeral 3 denotes an operation box which is fixed to the cylinder holder 2 and supplies liquefied gas to a relatively small box type (including a folding type) such as a cold storage container (foaming agent, paper agent, foam agent, etc.) to be described below. 1) is provided with a gripping ring 4 on the upper surface, the hook hole 5 is formed in a member for fixing the gripping ring 4 to the main body.

The cylinder holder 2 is composed of a pipe frame 7 which is fixed up and down the strut 6 to hold the liquefied gas cylinder 1, and typically has three wheels 8. The upper end of the support 6 is provided with a jack 10 for moving the hook member 9 up and down. The hook member 9 can be fitted to the hook hole 5 of the liquefied gas cylinder 1, and in this state, the liquefied gas cylinder 1 is fixed.

The liquefied gas cylinder 1 is fixed in a state of being placed on the floor or the ground except for the movement, and lifted by the jack 10 during the movement. The liquefied gas cylinder 1 is inclined when being lifted because it is supported only by the hook member 9, but the inclination of the liquefied gas cylinder 1 is controlled because the protrusion 11 protruding from the lower end of the support 6 contacts the outer circumferential surface of the cylinder. Can be.

The pipe frame 7 is attached with a handle 12 extending upwardly inclined in the opposite direction to the cylinder fixing side, and a fixing bracket 13 to the luggage compartment side wall of the vehicle is provided at an appropriate location of the side part. When the device is moved, the handle 12 is pushed. The operation box fixing tool 14 is installed at the upper side of the outer side of the support 6, and the operation box mounting support plate 15 protrudes at the lower end thereof. The operation box 3 is provided with the fastener 16 corresponding to the fastener 14 in the upper surface, and becomes the container mounting base 17 whose one side is opened downward. One or more legs 18 are attached to the outer surface of the container placing table 17 to maintain the horizontal state when the container placing table 17 is opened and the container 19 is placed thereon.

The operation box 3 is connected to the liquefied gas cylinder 1 by inserting the supply hose 20, the liquefied gas is introduced through the supply hose 20. The introduced liquefied gas is supplied to the nozzle 23 protruding to the panel surface 22 through the solenoid valve. The nozzle 23 is usually able to move back and forth. For example, the nozzle 23 is always pushed in the protruding direction by a spring pressure or the like to protrude by opening the container mounting base 17.

The panel surface 22 is provided with a safety switch 24 and an operation switch 25. The safety switch 24 is normally in the &quot; ON &quot; state by opening the container mounting base 17, and when it is closed, the safety switch 24 is in the &quot; OFF &quot; state, thereby preventing the power supply from coming in when the container mounting base 17 is closed. The operation switch 25 is for selecting a cooling temperature zone and a cooling time zone, and is composed of a button switch for freezing, refrigeration, cold storage, short distance, medium distance, and long distance, for example. And power switches are installed side by side. The solenoid valve is controlled by the selection operation of the operation switch 25 to control the amount of liquefied gas injected from the nozzle 23.

FIG. 2 shows an example of the use of the present apparatus, and shows the case where it is installed at the luggage compartment end of the light truck 25. At this time, the apparatus is fixed to the luggage compartment side wall 26 using the fixing bracket 13, and the liquefied gas cylinder 1 is placed on the luggage compartment. In this case, the panel surface 22 of the operation box 3 faces outward, and the front side of the operation box 3 has a space in which the container placing table 17 can be placed horizontally.

In use, the container mounting base 17 is pulled down and placed in front of the container, and then placed in a horizontal state, the container 19 is placed thereon, and the container 23 is pushed deeply so that the nozzle 23 is formed on the lid 19a of the container 19. Connect and turn on the power switch. Thus, when the operation switch 25 is operated to select freezing, refrigeration, stopping distance, or the like, a predetermined amount of liquefied gas is injected from the nozzle 23 into the container 19.

4 to 6 show examples of the configuration of the lid 19a of the container 19 in the case of using liquefied carbon dioxide as the liquefied gas, and the lid 19a of FIG. 4 is made of a heat insulating material other than the bottom. An eyeball 28, such as a breathable material, such as a filter, a mesh, or a metal plate, is arrange | positioned.

At one side of the container lid 19a, a connector 29 for connecting the nozzle 23 is installed and a pressure sensor entry hole 30 is formed. The pressure sensor 31 entering the lid 19a through the pressure sensor entry hole 30 is attached to the support member 32 fixed to the nozzle 23.

The container lid 19a is also provided with a means for compressing and blocking snow-shaped snow dry ice generated in the lid 19a to be described later. This compression means may be a method of pressing the snow dry ice in the vertical direction from the top or may be a method of pressing in the horizontal direction.

The example shown in the figure shows that the pressing plate 34 is attached to the ceiling wall of the container lid 19a via the symmetrical rocking arm 35. A handle 36 extending outward is connected to one side of the swinging arm 35, and by rotating the handle 36, the swinging arm 35 is rotated in a vertical direction in a horizontal state to lower the pressing plate 34 and to close the eye. The snow dry ice generated on the base 28 is compressed and blocked (see FIG. 6).

The nozzle 23 shown in FIG. 4 is of a type that connects to the connector 29, whereas the nozzle 23 shown in FIG. 5 is flat and the nozzle inlet 37 formed on the side of the container lid 19a also corresponds thereto. It is a rectangular type. At this time, the nozzle entry port 37 is sized with respect to the nozzle 23, and the pressure sensor 31 can also enter with the nozzle 23. In this case, the nozzle 23 and the pressure sensor 31 are fixed to the plate-shaped packing material 38.

In the example shown in FIG. 5, the cool storage material 40 is arrange | positioned at the bottom surface of the container lid 19a. This heat storage material 40 serves to accelerate the effect of cooling by soft block dry ice, which will be described later. The location of the heat storage material for this purpose may be not only the bottom surface of the container lid 19a, but may also be a side surface or a ceiling, and there is no need to close the surface.

Referring to the use example of the small quenching apparatus of the above configuration, as shown in Fig. 2, when installed and used in the luggage compartment of the small truck 25, the container placing table 17 is pulled forward and placed on the floor, and then the container 19 is placed thereon. ) And deeply push the nozzle 23 into the connector 29 (example shown in FIG. 4) or enter the nozzle entrance 37 (example shown in FIG. 5). Then, the operation switch 25 is operated to disperse the required amount of the liquefied carbon dioxide to the container lid 19a. Control of the injection amount is configured such that the solenoid valve is closed at the point where the pressure in the lid 19a is measured by the pressure sensor 31 to reach the set value.

The liquefied carbon dioxide gas used in the present invention is usually housed in a vacuum insulated high-pressure cylinder 1 of 20 kgf / cm 2 G, and when sprayed at room temperature, the volume expands to about 280 times in an instant and about 47% of its eyes are shaped like eyes. It becomes dry ice (snow dry ice) and about 53% is gas. The snow dry ice has a large surface area in contact with the air, so the evaporation reaction rate is fast, so that it can be rapidly cooled at first, but its holding time is not so long.

Therefore, in the present invention, the snow dry ice is compressed and blocked in order to increase the cooling time, thereby reducing the air contact area to delay the vaporization reaction rate. In addition, even block forming does not solidify like general dry ice, but does not have the same shape retention, that is, a form of a soft block. And the retention time can be controlled by the degree of compression.

In the example shown in the figure, since the degree of compression varies depending on the rotation angle of the handle 36, the scale for guiding the rotation angle may be displayed on the sides of the container 19 and the container lid 19a.

9A, 9B and 9C are graphs showing the change over time of the temperature (indicated by the solid line) and the product surface temperature (indicated by the dashed line) in the container obtained using the method and apparatus related to the present invention. For example, a graph showing a temperature change as it is in a snow dry ice state without blocking, FIG. 9B is a graph showing a temperature change in the case of soft blocking snow dry ice but not using a coolant, and FIG. 9C This is a graph showing the temperature change when dry ice is soft-blocked and a cold storage material is used.

In the case of the graph of Fig. 9A, the interior of the container is rapidly cooled to -35 DEG C or less within ten minutes after the gas injection, and the temperature of the surface of the product also drops rapidly. After that, the temperature inside the container rises sharply, and the temperature coincides at 1 hour after injection (the temperature is hereinafter referred to as the "saturation temperature"), and then the temperature increases slightly until about 12 hours. No change can be found.

Therefore, this method can be used for short-range litigation within 12 hours of delivery and delivery time, but cannot be used for medium to long-range transport beyond that.

In the case of the graph of FIG. 9B, since the dry ice is soft-blocked and the vaporization reaction is controlled, the temperature inside the container does not show a sharp drop as shown in FIG. 9A, and the temperature decreases relatively slowly, and most drops after about 3 to 4 hours. After that, it starts to rise slowly and is almost equilibrated after about 8 hours. The surface temperature of the product is also changed to a temperature close to the inside of the container and is maintained in about 6 hours. Accordingly, in the case of FIG. 9B, about 2 times as much transportable time as in the case of FIG. 9A can be secured.

In the case of the graph of FIG. 9C, the cold storage material is first cooled by the soft block dry ice, and the cooling effect slowly appears because the inside of the container 19 is cooled by the cold storage material. In other words, the lowest temperature after about 8 hours together with the temperature inside the container and the surface temperature of the product, reaches a saturation temperature after about 12 hours, almost does not change until after 48 hours. Therefore, in the case of FIG. 9C, it is possible to secure about twice as much transportable time as in FIG. 9B.

7 shows an example of applying the system related to the present invention to a hard container 41 having a larger thermal insulation. In this case, the liquefied gas supply chamber 42 is installed on the ceiling of the hard container 41, and the nozzle connecting connector 43 and the pressure sensor entry port (not shown) connected to the liquefied gas supply chamber 42 on the outer wall of the hard container 41. 44 is disposed. And the compression means of snow dry ice is installed in the liquefied gas supply chamber 42.

8 shows an example in which the system according to the present invention is installed in a luggage compartment of a small vehicle. In this case, the operation box 3 is fixed to the side wall of the luggage compartment by exposing the container mounting base 17 to the outside without using the cylinder holder 2, and is configured to lay the container mounting base 17 outward. .

In addition, a cylinder installation space 45 is placed next to the installation portion of the operation box 3, and is stored therein so that the liquefied gas cylinder 1 can be replaced. Reference numeral 46 denotes a door of the bomb installation space.

The example shown in FIG. 10 is particularly for the large container 47, in which the quenching device is free to move or a can-type nozzle 48 is attached in front of the flexible tube 49 extending from the operation box 3. do. In this case, the quenching device side can be brought close to the large container 47, and the nozzle 48 can be inserted into the nozzle inlet 50 of the large container 47 to supply liquefied gas by triggering the operation.

Fig. 11 shows a structural example of the lid 19b of the cold storage container when using liquefied nitrogen gas as the liquefied gas, and is configured similarly to the lid 19a shown in Fig. 4. The difference between the two is that a large number of gas discharge holes 52 are permeated through the upper surface or the side surface of the lid 19b (usually, a large number of small holes are formed), and that there is no compression means in the lid 19b. The other configuration is the same.

When using the liquefied nitrogen gas when using the liquefied nitrogen gas, the effect on the merchandise of the liquefied nitrogen gas falling down to -100 ° C. or lower can be alleviated, and the same continuous effect as that of the liquefied carbon dioxide gas can be obtained. have.

Since the system related to the present invention can be easily mounted on a vehicle, it can be used not only for the storage and delivery of the cryopreservation products as described above, but also for the preservation of foods and medicines in case of an emergency, construction sites, fishing boats. Can be used for any purpose, for example, in campsites.

Therefore, since the quenching system of the present invention can be easily mounted on a vehicle and transported, the quenching system can be used for preservation of foods and medicines at the time of delivery and delivery of cryopreserved products or during an emergency disaster, or at construction sites, fishing boats, campsites, etc. It can be used for any purpose.

Claims (10)

It consists of a liquefied gas cylinder, a cylinder holder for supporting it, and an operation box mounted to the cylinder holder, the operation box has a nozzle for injecting the liquefied gas supplied from the liquefied gas cylinder through the solenoid valve, And an operation switch for injection control, and the operation box further includes a container mounting table having one side opened downward to maintain a horizontal state. 2. The compact quenching system according to claim 1, wherein the cylinder holder is free to move and has means for supporting the liquefied gas cylinder while moving and floating it. The method according to claim 1 or 2, The small quenching system, wherein the nozzle is separated from the operation box. The method according to claim 1 or 2, The compact quenching system uses liquefied carbon dioxide as the liquefied gas, provides a supply space for the liquefied gas supplied from the nozzle to the system and the upper portion, and produces an eye shape generated by supplying the liquefied gas into the supply space. A compact quenching system, characterized by a combination of cold storage containers equipped with means for compressing snow dry ice. The method of claim 4, wherein A small quenching system, characterized in that a cool storage material is provided on the bottom, side, or top of the liquefied gas supply space of the cold storage container. It consists of a liquefied gas cylinder arranged to be mounted, detachable in the luggage compartment of the vehicle, and an operation box having a nozzle for injecting the liquefied gas supplied from the liquefied gas cylinder through the solenoid valve, the operation box and the nozzle and A compact quenching system, comprising a container mounting table which is fixed to a luggage compartment of the vehicle with the panel surface provided with an operation switch for controlling the injection facing outward and the cover covering the panel surface is opened in a horizontal state. The method of claim 6, Small quenching system, characterized in that the nozzle is separated from the operation box. The method according to claim 6 or 7, The small quenching system uses a liquefied carbon dioxide gas as a liquefied gas to provide a supply space for the liquefied gas supplied from the nozzle at the same time, and at the same time provides snow-shaped snow dry ice generated by the supply of the liquefied gas into the supply space. Compact quenching system, characterized in that the combination of the cold storage container having a means for compressing. The method according to claim 6 or 7, The compact quenching system uses nitrogen carbide as the liquefied gas, and provides a supply space for the liquefied nitrogen gas supplied from the nozzle to the system and the upper portion, and forms a gas discharge hole in the upper or side surface of the supply space. Small quenching system, characterized in that the combination made for the container. The method according to claim 6 or 7, The small quenching system uses liquefied nitrogen as the liquefied gas, and provides a supply space for the liquefied nitrogen gas supplied from the nozzle to the system and at the top thereof, and arranges a coolant on the bottom or side of the supply space. And at the same time, a combination of a cold storage container having a gas discharge hole formed on its upper surface or side surface.