CN209871312U - Cold charging type cold accumulation thermal insulation container - Google Patents

Abstract

The utility model discloses a cold-charging type cold-storage and heat-preserving container, comprising a container body with a heat-insulating box wall, a cold-storage plate device and a cold-charging pipeline system are arranged in the container body; the cold-storage plate device comprises a plurality of cold-storage plates Each of the cold storage plates includes a cold storage plate shell, a cooling channel, a coolant inlet and a coolant outlet; a cold storage liquid cavity is formed between the inner side of the cold storage plate shell and the outer side of the cold charging channel; The charging and cooling pipeline system includes a liquid carrier liquid inlet pipe, a liquid carrier liquid return pipe, a liquid charging liquid inlet port and a liquid charging liquid return port; The mixed form is connected between the refrigerant inlet pipe and the refrigerant return pipe. In the utility model, a cooling-charging pipeline system is arranged on the thermal insulation container, and the cooling-storage plate is charged and cooled by a cooling-charging station, so that the cooling-storage liquid in the cooling-storage plate can store a large amount of cooling capacity, thereby realizing passive cooling during transportation.

Description

Rechargeable cold storage and thermal insulation container

technical field

The utility model relates to a thermal insulation container, in particular to a cold-filled cold storage thermal insulation container.

Background technique

Due to the large amount and wide range of food refrigeration and freezing, it has always been an energy-intensive industry. In order to make the food cold chain take the road of sustainable development, it is necessary to study the energy saving and consumption reduction technology of cold chain logistics, and the phase change cold storage technology is a very good technology. development direction. The application of phase change cold storage technology in cold chain transportation is to use the principle of phase change energy storage to reasonably configure materials with different phase change temperatures according to different temperature requirements of cold chain transportation to achieve the effect of phase change cold storage and heat storage. Technology has broad application prospects and energy-saving potential in all aspects of the food cold chain, such as low-temperature food processing, low-temperature storage, low-temperature transportation and distribution, and low-temperature sales.

The existing phase change cold storage boxes are all small in volume and are mainly used in terminal distribution links such as medical cold chain and food insulation. The weight of the energy storage material, the temperature maintenance time in the box is generally 10 to 72 hours. The volume of this kind of cold storage box is not large, and the largest one does not exceed 200L. Before transportation, the cold storage box needs to be frozen in a low-temperature freezer. Put the goods into the box, reserve about 50mm space around the goods and the inner wall of the box, then insert the cold storage box into the space reserved on the four walls of the incubator, and then place the incubator in a box truck or ordinary container for transportation.

In the above-mentioned phase change cold storage box, the cold storage box needs to be pre-frozen in the low temperature freezer, and then put into the incubator when it is used. The volume of the incubator and the cold storage box is small, and the stored energy is limited. At the destination, the cold energy stored by the phase change energy storage material in the incubator has been released, and the energy cannot be replenished to the cold storage box, which will inevitably cause rapid changes in the temperature in the box, resulting in damage to the goods. At the same time, this kind of incubator cannot be directly used for transportation, and requires secondary loading, which is transported by box-type trucks or ordinary containers, which cannot meet multimodal transportation and has low efficiency.

SUMMARY OF THE INVENTION

The purpose of the utility model is to provide a cold-charging cold-storage and heat-preserving container which is designed with the entire container for heat preservation and cold preservation, and which is convenient to use a cold charging station for cold charging.

In order to achieve the above purpose, the cold storage cold storage container designed by the present invention includes a container body with a heat insulation box wall, and a cold storage plate device and a cold charging pipeline system are arranged in the container body; the cold storage plate device includes: A plurality of cold storage plates, each of the cold storage plates includes a cold storage plate shell and a cold charging channel arranged in the cold storage plate shell for the refrigerant to flow through, and formed between the inner side of the cold storage plate shell and the outer side of the cold charging channel A cold storage liquid cavity for filling the cold storage liquid, the cold storage plate further comprises a coolant inlet connected with the inlet end of the charging and cooling channel and a coolant outlet connected with the outlet end of the charging and cooling channel; the cold charging pipeline The system includes a liquid carrier liquid inlet pipe, a liquid carrier liquid return pipe and a cooling interface; the cooling interface includes a liquid charging liquid inlet port arranged at the inlet end of the liquid carrier liquid inlet pipe and a liquid refrigerant inlet port arranged on the liquid carrier liquid return pipe. The cooling and liquid-return interface at the outlet end of the cooling storage plate, the two form a cooling-charging interface that can be connected to an external cooling-charging station; the cooling-charging channels of each of the cold-storage plates are connected in series, parallel or a mixture of the two to the refrigerant inlet pipe. and the refrigerant return pipe.

Preferably, an inlet end of the cooling charging channel is provided with a liquid accumulation tank, an outlet end of the cooling charging channel is provided with a liquid return tank, and the cooling charging channel includes a parallel arrangement between the liquid accumulation tank and the liquid return tank. A plurality of heat exchange coils; the refrigerant inlet is connected to the liquid accumulation tank, and the refrigerant outlet is connected to the liquid return tank.

Preferably, the cold storage liquid is a phase-change cold storage liquid that utilizes phase-change cold storage, and its volume at room temperature accounts for 85% to 95% of the net volume of the cold storage liquid cavity (excluding the cold charging channel). The liquid volume will change, leaving a certain margin to avoid damage to the cold storage liquid cavity due to the excessive volume after the phase change.

Preferably, the heat insulation box wall includes a top plate, a side plate, a bottom plate, a front wall and a box door, and the cold storage plate device is installed on the top plate and/or the side plate.

Preferably, the cooling liquid inlet port and the cooling liquid return port of the cooling charging pipeline system pass through the wall of the thermal insulation box to form a cooling port that can be connected to an external cooling station, which is convenient for the container door to be opened without opening. , which is directly charged from the outside.

Preferably, the wall of the heat insulation box has the function of heat preservation and heat insulation, and includes an inner wall plate, an outer wall plate and a heat insulation layer sandwiched therebetween. The heat insulating layer is preferably made of polyurethane foam.

Compared with the prior art, the beneficial effects of the present utility model are:

1) Set up a cooling pipeline system and a cooling interface on the thermal insulation container, and use a movable or fixed cooling station on the ground to charge the cold storage plate, so that the cold storage liquid in the cold storage plate can store a large amount of cold energy, so as to achieve no cooling during transportation. Source cooling, even if there is an unexpected situation beyond the scheduled arrival time, the mobile cooling station can be used to supplement the cooling capacity at any time.

2) The cold-charging cold storage and insulation box adopts standard container size and has a large volume. It can be directly used for shipping frozen goods without secondary packaging and loading, and meets the requirements of multimodal transportation.

Description of drawings

1 to 4 are respectively the front view, the top view, the left view and the right view of the structure schematic diagram of the cold-charging cold storage and heat preservation container designed by the utility model.

FIG. 5 is a schematic cross-sectional view of the structure in the direction A-A in FIG. 1 .

FIG. 6 is a schematic cross-sectional structural diagram of the B-B direction in FIG. 2 .

FIG. 7 is a schematic diagram of the pipeline of the cold-filled cold storage and heat preservation container in FIG. 1 .

FIG. 8 and FIG. 9 are respectively a front view and a top view structural schematic diagram of the cold storage plate in FIG. 6 .

FIG. 10 is a schematic cross-sectional structural diagram of FIG. 8 along the C-C direction.

in:

The cold storage plate 100 includes: a cold storage plate shell 110, a cold storage liquid cavity 120, a cooling channel 130, a coolant inlet 140, a coolant outlet 150, a liquid accumulation tank 160, and a liquid return tank 170;

The container body 200 includes: a heat insulating box wall 210, an inner wall panel 211, an outer wall panel 212, an insulating layer 213, a top panel 220, a side panel 230, a bottom panel 240, a front wall 250, and a box door 260;

The charging and cooling pipeline system 300 includes: a charging and cooling liquid inlet port 310, a charging and cooling liquid return port 320, a refrigerant liquid inlet pipe 330, and a carrier refrigerant liquid return pipe 340;

And: 400 for cold storage fluid, 500 for refrigerant.

Detailed ways

The present utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

Example 1

As shown in FIGS. 1-10 , the cold-charging cold storage and thermal insulation container designed in this embodiment includes a container body 200 with a heat insulating box wall 210 . The container body 200 is provided with a cold storage plate device and a cold charging pipeline system 300 .

According to its sandwich structure, the heat insulation box wall 210 includes an inner wall plate 211, an outer wall plate 212 and an insulating layer 213 sandwiched therebetween. The heat insulation box wall 210 includes a top plate 220 , a side plate 230 , a bottom plate 240 , a front wall 250 and a box door 260 according to its specific position.

The charging and cooling pipeline system 300 is arranged along the wall surface of the heat insulation box wall 210 and includes a coolant inlet pipe 330, a coolant return pipe 340 and a coolant charging interface. The charging and cooling ports include a cooling liquid inlet port 310 provided at the inlet end of the refrigerant liquid inlet pipe 330 and a cooling liquid return port 320 provided at the outlet end of the carrier refrigerant liquid return pipe 340 .

The cold storage plate device is spliced by a plurality of cold storage plates 100 and installed on the top plate 220 and/or the side plate 230 in a riveting manner.

The cold storage plate 100 used in this embodiment includes a cold storage plate casing 110 , a cooling channel 130 provided in the cold storage plate casing 110 for the refrigerant 500 to flow through, and a refrigerant inlet connected to the inlet end of the cooling channel 130 140 and the refrigerant outlet 150 connected to the outlet end of the charging channel 130 . A cold storage liquid cavity 120 for filling the cold storage liquid 400 is formed between the inner side of the cold storage plate housing 110 and the outer side of the cooling charging channel 130 . The inlet end of the charging and cooling channel 130 is provided with a liquid accumulation tank 160 , and the outlet end of the charging and cooling channel 130 is provided with a liquid return tank 170 , and the cooling channel 130 is a plurality of pipes arranged in parallel between the liquid accumulation tank 160 and the liquid return tank 170 . The heat exchange coil; the refrigerant inlet 140 is connected to the liquid accumulation tank 160 , and the refrigerant outlet 150 is connected to the liquid return tank 170 .

After the cold storage plate device is spliced to the thermal insulation container, the cold storage liquid cavity 120 of each cold storage plate 100 is filled with phase change cold storage liquid using phase change cold storage, and the volume of the phase change cold storage liquid at room temperature accounts for 120% of the cold storage liquid cavity 120. 90% of the volume (minus the cooling channel), as shown in Figure 10. The cooling channels 130 of each cold storage plate 100 are connected in parallel between the refrigerant liquid inlet pipe 330 and the refrigerant liquid return pipe 340 .

The cooling liquid inlet port 310 and the cooling liquid return port 320 pass through the front wall 250 to form a cooling port that can be connected to an external cooling station, which facilitates cooling directly from the outside without opening the thermal container door 260 .

Example 2

This embodiment provides a method for charging and cooling the thermal insulation container in Embodiment 1, including two processes of charging and cooling, wherein:

Before transportation of the thermal insulation container, the cold storage plate 100 inside is pre-charged by the cold charging station. The specific cooling steps are as follows: the refrigerant 500 from the cold charging station enters the refrigerant inlet pipe through the refrigerant inlet 140 330 reaches the liquid storage tank 160 at one end of the cold storage plate 100; it is divided into a plurality of branches and enters the cold charging channel 130 of each cold storage plate 100 to cool the cold storage liquid 400 in each cold storage plate 100, so that the temperature of the cold storage liquid 400 is reduced to the same level. The phase change occurs below the change point or the phase change point, and the cold storage capacity is stored; after the refrigerant 500 exchanges heat in the charging and cooling channel 130, it flows out of the charging and cooling channel 130 and enters the liquid return tank 170, and then flows back to the charging and cooling channel through the refrigerant return pipe 340. Cold station, so circulating refrigeration.

During transportation, the cold storage liquid 400 in the cold storage plate 100 releases the cold energy for cooling. The specific cooling steps are as follows: the cold storage liquid 400 in the cold storage plate 100 undergoes a reverse phase change, and absorbs heat from the environment in the thermal insulation container carrying refrigerated goods, so that the thermal insulation container can still be used for a long time without external refrigeration equipment. Maintain the temperature in the box within the required range for a period of time. When the cooling capacity of the thermal insulation container is insufficient during transportation, the fixed cooling station set along the way, or the vehicle-mounted mobile cooling station is used to charge the thermal insulation container, so as to realize the supplementary cooling capacity at any time.

Claims (8)

1. A cold charge type cold accumulation thermal insulation container, comprising a container body (200) with a thermal insulation wall (210), characterized in that:

a cold storage plate device and a cold charging pipeline system (300) are arranged in the container body (200);

the cold storage plate device comprises a plurality of cold storage plates (100), each cold storage plate (100) comprises a cold storage plate shell (110) and a cold charging channel (130) arranged in the cold storage plate shell (110) and used for secondary refrigerant (500) to flow through, a cold storage liquid cavity (120) used for filling cold storage liquid (400) is formed between the inner side of the cold storage plate shell (110) and the outer side of the cold charging channel (130), and each cold storage plate (100) further comprises a secondary refrigerant inlet (140) connected with the inlet end of the cold charging channel (130) and a secondary refrigerant outlet (150) connected with the outlet end of the cold charging channel (130);

the cold charging pipeline system (300) comprises a secondary refrigerant liquid inlet pipe (330), a secondary refrigerant liquid return pipe (340) and a cold charging interface; the cold charging interface comprises a cold charging liquid inlet interface (310) arranged at the inlet end of the secondary refrigerant liquid inlet pipe (330) and a cold charging liquid return interface (320) arranged at the outlet end of the secondary refrigerant liquid return pipe (340);

the cold charging channel (130) of each cold storage plate (100) is connected between the secondary refrigerant liquid inlet pipe (330) and the secondary refrigerant liquid return pipe (340) in series, parallel or a mixture of the two.

2. The cold charge type cold accumulation thermal container as claimed in claim 1, wherein: the inlet end of the cold charging channel (130) is provided with a liquid accumulating tank (160), the outlet end of the cold charging channel (130) is provided with a liquid returning tank (170), and the cold charging channel (130) comprises a plurality of heat exchange coils which are arranged between the liquid accumulating tank (160) and the liquid returning tank (170) in parallel; the secondary refrigerant inlet (140) is connected with the liquid accumulating tank (160), and the secondary refrigerant outlet (150) is connected with the liquid returning tank (170).

3. The cold charge type cold accumulation thermal container as claimed in claim 1, wherein: the cold storage liquid (400) is a phase-change cold storage liquid which utilizes phase-change cold storage, and the volume of the cold storage liquid at normal temperature accounts for 85-95% of the net volume of the cold storage liquid cavity (120).

4. The cold charge type cold accumulation thermal container as claimed in claim 1, wherein: the heat-insulating box wall (210) comprises a top plate (220), side plates (230), a bottom plate (240), a front wall (250) and a box door (260).

5. The cold charge type cold accumulation thermal container as claimed in claim 4, wherein: the cold accumulation plate device is arranged on the top plate (220) and/or the side plate (230).

6. The cold charge type cold accumulation thermal container as claimed in any one of claims 1 to 5, wherein: and a cold filling liquid inlet interface (310) and a cold filling liquid return interface (320) of the cold filling pipeline system (300) penetrate through the heat insulation box wall (210) to form a cold filling interface which can be connected with an external cold filling station.

7. The cold charge type cold accumulation thermal container as claimed in any one of claims 1 to 5, wherein: the heat insulation box wall (210) comprises an inner wall plate (211), an outer wall plate (212) and a heat insulation layer (213) clamped between the two.

8. The cold charge type cold accumulation thermal container as claimed in claim 7, wherein: the heat insulation layer (213) is made of polyurethane foam material.