Cold storage type cooling storage and cold storage type cooling vehicle

Abstract

To provide a cold storage type cooling storage which enables reduction of operation costs, and to provide a cold storage type cooling vehicle.SOLUTION: A cold storage type cooling storage 20 includes: a cargo chamber 3; a cold storage material storage chamber 4 disposed in the cargo chamber 3; a cold storage material 5 stored in the cold storage material storage chamber 4; and a pipe 6 disposed in the cold storage material storage chamber 4. The cold storage type cooling storage 20 freezes the cold storage material 5 through heat exchange with a liquefied gas G supplied to the pipe 6 and cools the inside of the cargo chamber 3 by using cold of the frozen cold storage material 5. The pipe 6 is in contact with the cold storage material 5 in the cold storage material storage chamber 4.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a regenerative cooling box and a regenerative cooling vehicle. [Background technology]

[0002] Patent Document 1 describes a cold storage type refrigerated vehicle. The cold storage type refrigerated vehicle described in Patent Document 1 has a cold roll box, a cooling chamber arranged below the cold roll box, a cold storage material arranged in the cooling chamber, and a refrigerator for freezing the cold storage material. During times when the cold roll box is not in use (e.g., at night), the refrigerator is driven using power from a city power source to freeze the cold storage material, and during times of use (e.g., during the day), the cold energy of the frozen cold storage material is used to maintain the inside of the cold roll box at a low temperature. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 09-170833 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the regenerative refrigerator vehicle of Patent Document 1, the regenerative material is frozen using a refrigerator, so the operating costs, that is, the power consumption, tend to be high.

[0005] The present invention has been made in consideration of the above-mentioned points, and an object of the present invention is to provide a regenerative cooling box and a regenerative cooling vehicle that can reduce operating costs. [Means for solving the problem]

[0006] Such an object can be achieved by the present invention described below.

[0007] (1) A luggage compartment; A cold storage material storage chamber disposed in the luggage compartment; A cold storage material stored in the cold storage material storage chamber; A pipe disposed in the cold storage material storage chamber, The cold storage type cooler is characterized in that the cold storage material is frozen by heat exchange with liquefied gas supplied to the piping, and the cold energy of the frozen cold storage material is used to cool the interior of the luggage compartment.

[0008] (2) A vehicle body; A luggage compartment disposed in the vehicle body; A cold storage material storage chamber disposed in the luggage compartment; A cold storage material stored in the cold storage material storage chamber; A pipe disposed in the cold storage material storage chamber, The regenerator type refrigerated vehicle is characterized in that the regenerator material is frozen by heat exchange with the liquefied gas supplied to the piping, and the inside of the luggage compartment is cooled using the cold heat of the frozen regenerator material.

[0009] (3) The regenerator type cooling vehicle according to (2) above, wherein the piping is in contact with the regenerator material in the regenerator material storage chamber.

[0010] (4) The cold storage material storage chamber has a supply port for supplying the liquefied gas to the piping and a discharge port for discharging the liquefied gas from the piping, The regenerative cooling vehicle according to (2) above, wherein one end of the piping is connected to the supply port and the other end is connected to the discharge port.

[0011] (5) The regenerator type refrigerated vehicle according to (2) above, wherein the luggage compartment has thermal insulation properties. Effect of the Invention

[0012] The cold storage type refrigerator of the present invention has a cargo compartment, a cold storage material storage chamber arranged in the cargo compartment, a cold storage material stored in the cold storage material storage chamber, and a pipe arranged in the cold storage material storage chamber. The cold storage material is frozen by heat exchange with liquefied gas supplied to the pipe, and the cold heat of the frozen cold storage material is used to cool the cargo compartment. According to the cold storage type refrigerator having such a configuration, since the cold storage material is frozen by heat exchange with the liquefied gas, there is no need to drive a refrigerator as in the past, and operating costs can be reduced. In addition, since there is no need to install a refrigerator, it is possible to reduce the size and weight of the cold storage type refrigerator, increase the capacity of the cold storage material, and increase the capacity of the cooling chamber.

[0013] The regenerative cooling vehicle of the present invention includes a vehicle body, a luggage compartment arranged in the vehicle body, a regenerative storage material storage chamber arranged in the luggage compartment, a regenerative storage material stored in the regenerative storage material storage chamber, and a pipe arranged in the regenerative storage material storage chamber. The regenerative storage material is frozen by heat exchange with liquefied gas supplied to the pipe, and the luggage compartment is cooled using the cold heat of the frozen regenerative storage material. According to the regenerative cooling vehicle having such a configuration, since the regenerative storage material is frozen by heat exchange with the liquefied gas, there is no need to drive a refrigerator as in the past, and operating costs can be reduced. In addition, since there is no need to equip a refrigerator, it is possible to reduce the size and weight of the regenerative cooling vehicle, increase the capacity of the regenerative storage material, and increase the capacity of the cooling chamber. [Brief description of the drawings]

[0014] [Figure 1] FIG. 1 is a diagram showing a regenerative cooling vehicle according to a first embodiment. [Diagram 2] 2 is a cross-sectional view of a regenerative cooling box provided in the regenerative cooling vehicle shown in FIG. 1. [Diagram 3] FIG. 1 is a schematic diagram showing a receiving terminal, etc. [Figure 4] FIG. 13 is a schematic diagram showing a modified example of a receiving terminal, etc. [Diagram 5] FIG. 11 is a diagram showing a regenerator type cooler according to a second embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a regenerative cooling box and a regenerative cooling vehicle according to the present invention will be described in detail with reference to the respective embodiments shown in the accompanying drawings.

[0016] First Embodiment The regenerative cooling vehicle 1 shown in FIG. 1 is a van-type truck, and has a vehicle body 2 and a regenerative cooling box 20.

[0017] 2, the cold storage type refrigerator 20 has a luggage compartment 3 arranged in the luggage platform 21 of the vehicle body 2, a cold storage material storage chamber 4 arranged in the luggage compartment 3, a cold storage material 5 stored in the cold storage material storage chamber 4, and a pipe 6 arranged in the cold storage material storage chamber 4. The cold storage material 5 is frozen by heat exchange with liquefied gas G supplied to the pipe 6, and the cold energy of the frozen cold storage material 5 is used to cool the luggage compartment 3. This makes it possible to cool an object to be cooled accommodated in the luggage compartment 3.

[0018] In such a regenerative cooling vehicle 1, the liquefied gas G is used to freeze the cold storage material 5 during times when the cargo compartment 3 is not in use (for example, at night), and during use (for example, during the day), the cold energy of the frozen cold storage material 5 is used to maintain the inside of the cargo compartment 3 at a low temperature. Therefore, even in a power-off state, the cargo compartment 3 can be maintained at a low temperature. Furthermore, according to the regenerative cooling vehicle 1, since the cold storage material 5 is frozen by heat exchange with the liquefied gas G, there is no need to drive a refrigerator as in the past, and operating costs can be reduced. In addition, since there is no need to install a refrigerator, it is possible to reduce the size and weight of the cargo compartment 3, increase the capacity of the cold storage material 5, and increase the capacity of the cargo compartment 3.

[0019] The luggage compartment 3 has a generally rectangular parallelepiped shape extending in the front-rear direction of the vehicle body 2, and has an inner wall 31, an outer wall 32, and a heat insulating material 33 provided between the inner wall 31 and the outer wall 32. This provides sufficient insulation within the luggage compartment 3, making it difficult for cold air within the luggage compartment 3 to escape to the outside. Therefore, the cold energy of the frozen cold storage material 5 can keep the luggage compartment 3 at a low temperature for a longer period of time. The configuration of the luggage compartment 3 is not particularly limited, and for example, a member (not shown) may be interposed between the inner wall 31 and the heat insulating material 33, between the outer wall 32 and the heat insulating material 33, inside the inner wall 31, or outside the outer wall 32.

[0020] The materials constituting the inner wall 31 and the outer wall 32 are not particularly limited, and may be, for example, various metal materials such as stainless steel (SUS), iron, and aluminum. This results in a robust and sturdy luggage compartment 3. The materials constituting the heat insulating material 33 are not particularly limited, and may be, for example, glass wool, cellulose fiber, plastic foam (polyurethane foam, polyethylene foam, polypropylene foam, etc.). This results in a luggage compartment 3 with excellent thermal insulation properties.

[0021] The luggage compartment 3 also has a floor section 34 located vertically below, a ceiling section 35 located above the floor section 34 and facing the floor section 34, and a side wall section 36 standing upright from the floor section 34 and connecting the floor section 34 and the ceiling section 35. The floor section 34, the ceiling section 35 and the side wall section 36 are connected and fixed to each other, for example, via a framework 37. However, the method of connection and fixing them is not particularly limited, and for example, they may be fixed by welding the outer walls to each other and the inner walls to each other.

[0022] Further, a door 38 is provided at the rear end of the luggage compartment 3. An object to be cooled can be carried into the luggage compartment 3 or removed from the luggage compartment 3 via the door 38. However, the arrangement and configuration of the door 38 are not particularly limited.

[0023] The cold storage material storage chamber 4 is disposed in the luggage compartment 3 and is fixed to the luggage compartment 3. The material of the cold storage material storage chamber 4 is not particularly limited, and may be, for example, various metal materials such as stainless steel (SUS), iron, and aluminum, or various resin materials such as polyethylene. By using various metal materials, a cold storage material storage chamber 4 that is robust, sturdy, and has high thermal conductivity can be obtained. On the other hand, by using various resin materials, a cold storage material storage chamber 4 that is optically transparent and allows the state of the cold storage material 5 to be visually confirmed can be obtained.

[0024] The cold storage material 5 is stored in the cold storage material storage chamber 4. The cold storage material 5 is also called a cold insulation material and is used to keep the temperature inside the luggage compartment 3 low. Any known material can be used as the cold storage material 5, and for example, a mixture of water with a highly water-absorbent resin such as sodium polyacrylate, a preservative, a shape stabilizer, and the like can be suitably used.

[0025] The freezing point at which the cold storage material 5 freezes (the melting point at which the cold storage material melts) is not particularly limited, and differs depending on whether it is used for freezing or refrigeration, and also differs depending on the type of cooling object stored in the luggage compartment 3. For example, if it is desired to cool the cooling object in the luggage compartment 3 without freezing it, the freezing point of the cold storage material 5 is preferably about -10° or more and -2°C or less. This allows the cooling object to be cooled to a lower temperature without freezing it. Furthermore, if it is desired to freeze the cooling object in the luggage compartment 3, the freezing point of the cold storage material 5 is preferably about -30°C or more and -20°C or less. This allows the cooling object to be frozen more reliably and in a shorter time.

[0026] In this embodiment, since the door 38 is provided at the rear end of the luggage compartment 3, the cold storage material storage chamber 4 is arranged biased toward the front side of the cold storage type cooling vehicle 1 in the luggage compartment 3. As a result, the area between the cold storage material storage chamber 4 and the door 38 in the luggage compartment 3 becomes the cooling chamber 7 in which the object to be cooled is placed and cooled. This makes it easy to put the object to be cooled in and take it out of the cooling chamber 7. However, the arrangement of the cooling chamber 7 is not particularly limited. For example, the cold storage material storage chamber 4 may be arranged on the floor part 34, and the cooling chamber 7 may be located above the cold storage material storage chamber 4, or the cold storage material storage chamber 4 may be arranged on the ceiling part 35, and the cooling chamber 7 may be located below the cold storage material storage chamber 4.

[0027] A pipe 6 is provided in the cold storage material storage chamber 4. The pipe 6 is arranged in a serpentine manner in the cold storage material storage chamber 4 and is provided throughout the cold storage material storage chamber 4. The pipe 6 is in contact with the cold storage material 5 in the cold storage material storage chamber 4. A supply port 41 and a discharge port 42 are formed in the side wall of the cold storage material storage chamber 4, and one end of the pipe 6 is connected to the supply port 41 and the other end of the pipe 6 is connected to the discharge port 42. Liquefied gas G is supplied to the pipe 6 through the supply port 41, and the liquefied gas G is discharged from the pipe 6 through the discharge port 42. With this configuration, the supply of the liquefied gas G to the pipe 6 is facilitated.

[0028] The cold storage material 5 is cooled and frozen by heat exchange with the liquefied gas G supplied into the pipe 6. In particular, as described above, since the pipe 6 is provided over the entire area of ​​the cold storage material storage chamber 4 and is not in contact with the cold storage material 5, heat exchange between the liquefied gas G in the pipe 6 and the cold storage material 5 is efficiently performed, and the cold storage material 5 can be frozen in a shorter time.

[0029] The liquefied gas G is not particularly limited as long as it can freeze the cold storage material 5, and for example, LNG (liquefied natural gas), LPG (liquefied petroleum gas), liquefied hydrogen gas, liquefied ammonia gas, etc. can be used. By using the liquefied gas G as a refrigerant for freezing the cold storage material 5, the following effects can be achieved. For convenience of explanation, the following will be described as a representative of the liquefied gases G, which have a large consumption amount, but the same applies to other liquefied gases.

[0030] Generally, at LNG receiving terminals and thermal power plants that use LNG as fuel, LNG is vaporized through heat exchange with seawater pumped from the ocean to produce NG (natural gas). The seawater that has had its heat removed by the heat exchange with the LNG is then returned to the ocean. In other words, the cold energy of the LNG is dumped into the ocean without being used effectively. Furthermore, returning the seawater that has had its heat removed to the ocean can cause a drop in the seawater temperature, which could even have an impact on the ecosystem.

[0031] Therefore, in the regenerative cooling vehicle 1 of this embodiment, at least a part of the cold energy of LNG is used to freeze the cold storage material 5, and the cold energy of LNG is effectively utilized and the impact on the ecosystem is reduced. Considering that all the cold energy of LNG has been dumped into the sea up until now, the cost for freezing the cold storage material 5 is substantially zero. In addition, since the cold storage material 5 can be frozen simply by supplying LNG to the pipe 6, the power consumption for freezing the cold storage material 5 can be reduced compared to the case where a conventional refrigerator is used. In addition, since LNG has an ultra-low temperature of -162°C, the cold storage material 5 can be frozen in a shorter time compared to the case where a conventional refrigerator is used. Therefore, the operating efficiency of the regenerative cooling vehicle 1 is improved.

[0032] For example, as shown in Figure 3, a receiving terminal 9A or a power plant 9B is equipped with a tank 91 for temporarily storing the transported LNG, a vaporizer 92 for vaporizing the LNG stored in the tank 91 through heat exchange with seawater to produce the required amount of NG, a pipeline 93 connecting the tank 91 and the vaporizer 92, and a pump 94 positioned midway along the pipeline 93 for sending the LNG in the tank 91 to the vaporizer 92.

[0033] Therefore, in this embodiment, a supply pipe 94 and a discharge pipe 95 are connected to the middle of the piping 93 to construct a freezing equipment 96 for freezing the cold storage material 5. A valve B1 for adjusting the opening degree is disposed in the supply pipe 94, and a valve B2 for adjusting the opening degree is also disposed in the discharge pipe 95. With such a freezing equipment 96, it is possible to introduce the freezing equipment 96 without requiring large-scale repairs or modifications to the existing receiving terminal 9A or power plant 9B. Therefore, the introduction cost of the freezing equipment 96 is low.

[0034] In the freezing equipment 96, first, as shown in Fig. 3, a supply pipe 94 is connected to the supply port 41 of the regenerative cooling vehicle 1, and a discharge pipe 95 is connected to the discharge port 42. Next, valves B1 and B2 are opened to branch a part of the LNG flowing through the pipe 93 to the supply pipe 94. As a result, LNG is supplied into the pipe 6 through the supply pipe 94, and the LNG in the pipe 6 is returned to the pipe 93 through the discharge pipe 95. Then, the regenerative material 5 is frozen by heat exchange with the LNG flowing through the pipe 6. In this way, according to the freezing equipment 96, the regenerative material 5 can be frozen with a simple operation.

[0035] When freezing of the cold storage material 5 is completed, the supply pipe 94 is disconnected from the supply port 41, and the discharge pipe 95 is disconnected from the discharge port 42. Here, in a state where the supply pipe 94 and the discharge pipe 96 are disconnected, there is a risk that LNG may remain in the piping 93. For this reason, for example, an exhaust device such as a fan or a pump (not shown) may be disposed in the supply pipe 94, and the LNG in the supply pipe 94 may be forcibly discharged by driving the exhaust device. Also, for example, the LNG may be forcibly discharged by supplying air, nitrogen gas, or the like from the supply port 41 so as to push it out from the discharge port 42.

[0036] The freezing equipment 96 is not particularly limited as long as it can supply LNG before being introduced into the vaporizer 92 to the pipe 6 and can return the LNG discharged from the pipe 6 to the upstream side of the vaporizer 92. For example, as shown in Fig. 4, a discharge pipe 95 may be connected to a tank 91 and the LNG discharged from the pipe 6 may be returned to the tank 91.

[0037] The regenerative cooling vehicle 1 has been described above. As described above, the regenerative cooling vehicle 1 has the vehicle body 2, the luggage compartment 3 arranged in the vehicle body 2, the regenerative storage material storage chamber 4 arranged in the luggage compartment 3, the regenerative storage material 5 stored in the regenerative storage material storage chamber 4, and the piping 6 arranged in the regenerative storage material storage chamber 4. The regenerative storage material 5 is frozen by heat exchange with the liquefied gas G supplied to the piping 6, and the luggage compartment 3 is cooled using the cold heat of the frozen regenerative storage material 5. This allows the object to be cooled stored in the luggage compartment 3 to be cooled. According to this configuration, the regenerative storage material 5 is frozen by heat exchange with the liquefied gas G, so that the freezing cost can be reduced compared to the conventional structure in which the regenerative storage material 5 is frozen by driving a refrigerator. In addition, since there is no need to install a refrigerator, it is possible to reduce the size and weight of the luggage compartment 3, increase the capacity of the regenerative storage material 5, and increase the capacity of the luggage compartment 3.

[0038] As described above, the pipe 6 is in contact with the cold storage material 5 in the cold storage material storage chamber 4. This allows efficient heat exchange between the liquefied gas in the pipe 6 and the cold storage material 5, and allows the cold storage material 5 to be frozen in a shorter time.

[0039] As described above, the cold storage material storage chamber 4 has a supply port 41 for supplying the liquefied gas G to the pipe 6 and a discharge port 42 for discharging the liquefied gas G from the pipe 6, and one end of the pipe 6 is connected to the supply port 41 and the other end is connected to the discharge port 42. With this configuration, the supply of the liquefied gas G to the pipe 6 becomes easy.

[0040] As described above, the luggage compartment 3 has thermal insulation properties. This makes it difficult for the cold air in the cooling chamber 7 to escape to the outside of the luggage compartment 3. Therefore, the cold energy of the frozen cold storage material 5 can keep the cooling chamber 7 at a low temperature for a longer period of time.

[0041] As described above, the cold storage type cooler 20 has a cargo room 3, a cold storage material storage chamber 4 arranged in the cargo room 3, a cold storage material 5 stored in the cold storage material storage chamber 4, and a pipe 6 arranged in the cold storage material storage chamber 4. The cold storage material 5 is frozen by heat exchange with the liquefied gas G supplied to the pipe 6, and the inside of the cargo room 3 is cooled using the cold heat of the frozen cold storage material 5. This makes it possible to cool the object to be cooled stored in the cargo room 3. According to this configuration, the cold storage material 5 is frozen by heat exchange with the liquefied gas G, so that the freezing cost can be reduced compared to a conventional structure in which the cold storage material 5 is frozen by driving a refrigerator. In addition, since there is no need to install a refrigerator, it is possible to reduce the size and weight of the cargo room 3, increase the capacity of the cold storage material 5, and increase the capacity of the cargo room 3.

[0042] <Second embodiment> This embodiment is similar to the first embodiment described above, except for the configuration of the regenerative refrigerator 20. In the following description, the differences between this embodiment and the first embodiment will be mainly described, and the same points will not be described. In each drawing of this embodiment, the same reference numerals are used for the same configurations as the above-mentioned embodiment.

[0043] As shown in Fig. 5, the cold storage type cooling box 20 of this embodiment is not fixed to the vehicle body 2, but is fixed onto the trailer 8. The trailer 8 is then connected to the vehicle body 2, which is the towing vehicle.

[0044] The second embodiment as described above can also achieve the same effects as the first embodiment described above.

[0045] Although the regenerative cooling box and the regenerative cooling vehicle of the present invention have been described above based on the illustrated embodiment, the present invention is not limited thereto, and the configuration of each part can be replaced with any configuration having a similar function. In addition, any other configuration or any process may be added to the present invention. [Explanation of symbols]

[0046] 1...cold storage cooling vehicle, 2...vehicle body, 20...cold storage cooling box, 3...luggage compartment, 31...inner wall, 32...outer wall, 33...thermal insulation, 34...floor, 35...ceiling, 36...side wall, 37...framework, 38...door, 4...cold storage material storage chamber, 41...supply port, 42...discharge port, 5...cold storage material, 6...piping, 7...cooling chamber, 8...trailer, 91...tank, 92...evaporator, 93...piping, 94...supply pipe, 95...discharge pipe, 96...freezing equipment, B1...valve, B2...valve, G...liquefied gas

Claims

1. The luggage compartment, A cold storage material storage chamber disposed in the luggage compartment; A cold storage material stored in the cold storage material storage chamber; A pipe disposed in the cold storage material storage chamber, The cold storage type cooler is characterized in that the cold storage material is frozen by heat exchange with liquefied gas supplied to the piping, and the cold energy of the frozen cold storage material is used to cool the interior of the luggage compartment.

2. A vehicle body, A luggage compartment disposed in the vehicle body; A cold storage material storage chamber disposed in the luggage compartment; A cold storage material stored in the cold storage material storage chamber; A pipe disposed in the cold storage material storage chamber, The regenerator type refrigerated vehicle is characterized in that the regenerator material is frozen by heat exchange with the liquefied gas supplied to the piping, and the inside of the luggage compartment is cooled using the cold heat of the frozen regenerator material.

3. 3. The regenerative cooling vehicle according to claim 2, wherein the piping is in contact with the regenerative material in the regenerative material storage chamber.

4. the cooling storage material storage chamber has a supply port for supplying the liquefied gas to the piping and a discharge port for discharging the liquefied gas from the piping, 3. The regenerative cooling vehicle according to claim 2, wherein one end of the piping is connected to the supply port, and the other end is connected to the discharge port.

5. 3. The regenerative cooling vehicle according to claim 2, wherein the luggage compartment has thermal insulation properties.

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