阅读说明：本技术 一种可实现单区双蓄冷模式的可移动相变冷藏箱 (Movable phase-change refrigerator capable of realizing single-zone double-cold-storage mode ) 是由 陈武 范振得 蒋爱国 于 2021-08-12 设计创作，主要内容包括：一种可实现单区双蓄冷模式的可移动相变冷藏箱,包括：多级冷冻蓄冷板和连接多级所述冷冻蓄冷板的第一换热管；多级冷藏蓄冷板和连接多级所述冷藏蓄冷板的第二换热管；与所述第一换热管连接的第一进口接头和第一出口接头；与所述第二换热管连接的第二进口接头和第二出口接头；所述第一进口接头、第一出口接头、第二进口接头和第二出口接头外接快速充冷装置,对各级所述冷冻蓄冷板和冷藏蓄冷板进行充冷。本发明实现了根据实际需要在同一个相变冷藏箱内切换冷藏和冷冻两种模式,提高了相变冷藏箱的空间利用率和灵活性。(A movable phase change refrigeration container capable of realizing a single-zone double cold accumulation mode comprises: the multi-stage cold storage plate comprises a multi-stage cold storage plate and a first heat exchange tube connected with the multi-stage cold storage plate; the multi-stage cold storage plate and the second heat exchange tube are connected with the multi-stage cold storage plate; a first inlet connection and a first outlet connection connected to the first heat exchange tube; a second inlet connection and a second outlet connection connected to the second heat exchange tube; the first inlet joint, the first outlet joint, the second inlet joint and the second outlet joint are externally connected with a quick cold charging device to charge cold to the freezing cold storage plate and the cold storage plate at each stage. The invention realizes the switching of the two modes of refrigeration and freezing in the same phase-change refrigerating box according to actual needs, and improves the space utilization rate and the flexibility of the phase-change refrigerating box.)

1. A movable phase-change refrigerator capable of realizing a single-zone double-cold-storage mode is characterized by comprising:

the multi-stage cold storage plate and the first heat exchange tube (9) are connected with the multi-stage cold storage plate;

the multi-stage cold storage plate and a second heat exchange tube (10) connected with the multi-stage cold storage plate;

a first inlet connection (11) and a first outlet connection (12) connected to the first heat exchange tube (9);

a second inlet connection (13) and a second outlet connection (14) connected to the second heat exchange tube (10);

the first inlet joint (11), the first outlet joint (12), the second inlet joint (13) and the second outlet joint (14) are externally connected with a rapid cold charging device to charge cold for each stage of the freezing cold-storage plate and the refrigerating cold-storage plate.

2. The movable phase-change refrigerator capable of performing a single-compartment dual cold accumulation mode as claimed in claim 1, wherein a plurality of stages of said cold accumulation plates and a plurality of stages of said cold accumulation plates for freezing are installed on an inner wall surface of said phase-change refrigerator, and are arranged at intervals in a crossing manner.

3. The movable phase-change cold storage container capable of realizing single-zone double-cold storage mode as claimed in claim 1, wherein said first heat exchange tube (9) and second heat exchange tube (10) are respectively arranged inside the cold storage plates for freezing and cold storage, each heat exchange tube is provided with a connecting buckle (17) on the extension part outside the cold storage plates of each stage.

4. The movable phase-change cold storage box capable of realizing single-zone double-cold storage mode as claimed in claim 3, wherein the number of cold storage plates can be adjusted according to the required refrigerating capacity by a plurality of said connecting buckles (17).

5. The movable phase-change refrigerator capable of performing a single-compartment dual cold accumulation mode as claimed in claim 1, wherein the cold accumulation plate is filled with a cold-storage temperature phase-change material (15), and the cold accumulation plate is filled with a freezing temperature phase-change material (16).

6. The portable phase change refrigerator as claimed in claim 1, wherein the rapid cooling device is connected to the corresponding inlet and outlet connectors and further connected to the corresponding heat exchanger tube according to the temperature required for the storage of the goods, thereby selecting the refrigerating mode or the freezing mode.

7. The portable phase change refrigerator capable of performing single-zone dual storage mode as claimed in claim 6, wherein after said rapid cooling device is connected to said inlet port, the refrigerant is introduced from said rapid cooling device into the corresponding heat exchange tube, where it evaporates and absorbs heat to cool said cold storage plates, and then is discharged from the corresponding outlet port to return to said rapid cooling device.

8. The movable phase-change refrigerating box capable of realizing single-zone double-cold-storage mode as claimed in claim 7, wherein different refrigerants are selected as the fast cold-charging device of the refrigerating medium according to different temperature requirements, so that different refrigerants enter the heat exchange tube to meet different refrigerating requirements.

9. The movable phase-change refrigerator capable of realizing single-area double-cold-storage mode as claimed in claim 1, wherein said first inlet connector (11), said first outlet connector (12), said second inlet connector (13) and said second outlet connector (14) can be arranged at any position of the box body of said phase-change refrigerator as required, so as to facilitate the connection of a quick-cooling device for cooling the phase-change refrigerator.

Technical Field

The invention relates to a movable phase-change refrigerating box, in particular to a movable phase-change refrigerating box capable of realizing a single-zone double-cold-storage mode.

Background

The cold-chain logistics industry in China starts late and is still in the starting stage at present. The cold chain circulation rate and the cold chain transportation utilization rate are far different from those of developed countries, the cold chain circulation rate of the developed countries is more than 95%, and the circulation rate of the domestic cold chain logistics is only about 20%. The circulation loss rate of meat, fruits and vegetables reaches more than 20% every year in China. Traditional cold chain equipment mainly uses mechanical refrigeration as the main thing, and mechanical refrigeration has the energy utilization and hangs down and environmental pollution problem, and mechanical refrigeration has the easy trouble of refrigeration plant and the big scheduling problem of running noise in addition. The application of the phase-change refrigerating box can effectively improve the energy utilization rate and reduce the equipment maintenance cost.

The phase-change refrigerating box stores energy by utilizing latent heat of the phase-change material, and the refrigerating box is refrigerated before use to ensure that the phase-change material is changed from a liquid state to a solid state to absorb cold energy and is changed from the solid state to the liquid state to release the cold energy in the transportation process. The current phase change refrigerator mainly comprises: single-temperature-zone phase change refrigerator and multi-temperature-zone phase change refrigerator. In the aspect of a single-temperature-zone phase-change refrigerator, a single-temperature-zone phase-change refrigerator is disclosed in patent documents CN201810713459A.2018-06-29, wherein a passive energy storage unit is arranged in the refrigerator, and after the energy storage unit is charged with cold, the passive energy storage unit provides cold energy to meet the specified temperature in the refrigerator; can only meet the refrigeration transportation at a single temperature and has obvious limitation. Shenyanming et al in CN202021737467.1 (2020-08-19) utilize electric energy to drive a cold charging unit to charge cold to a phase change cold storage unit, and the phase change cold storage unit releases cold to maintain low temperature in the transportation process; the method has the advantages of good temperature stability, low cost and environmental protection. The valley electricity can be used for cold charging, so that the operation cost is further reduced; the cold filling speed of the cold accumulation unit is not considered, so that the application of the refrigerating box is limited. In the field of multi-temperature zone phase-change refrigerators, GARG PANKAJ, US2015013369A1.2015-01-15, discloses a cold-charged refrigerator wagon comprising a wagon, a plurality of heat preservation chambers, and a cold storage chamber disposed above the heat preservation chambers, wherein one or more cold accumulators are disposed in the cold storage chamber, and when freezing of the cold accumulators is completed every morning, cold is released from a transfer station through the cold accumulators to transport goods to a destination; the multi-temperature zone cold storage chambers are separated by partition structures, so that the space utilization rate of the cold storage chamber is obviously reduced. Chenkuang et al, in CN201822175037.4(2018-12-24), disclose a multi-temperature co-allocated cold storage type refrigerator wagon box, which comprises a cab and a multi-temperature wagon box connected behind the cab; four cold storage devices which are communicated through cold charging pipelines in sequence are fixed at the top of the driving vehicle; one end of the cold charging pipeline, which is positioned at the tail of the vehicle, is provided with a cold charging interface, and the four cold storage devices are sequentially charged with cold through an external cold charging station; the cold charging effect of the cold charging temperature on different cold storage units is not considered, and a large amount of cold energy is lost in the cold charging process.

Therefore, aiming at the current situation, the invention provides the movable phase-change refrigerating box capable of realizing the single-zone double-cold-storage mode, which has no partition structure between the temperature zones of the multi-temperature phase-change refrigerating box, can realize two cold-storage modes of refrigeration and freezing, and improves the space utilization rate and the flexibility of the phase-change refrigerating box.

Disclosure of Invention

The single-temperature-zone phase-change refrigeration container only can be used for refrigerated goods transportation or frozen goods transportation; aiming at the problems of low space utilization rate and the like of the multi-temperature-zone phase-change refrigerating box, partition structures are arranged among the temperature zones of the multi-temperature-zone phase-change refrigerating box; a movable phase-change cold storage box capable of realizing a single-zone double-cold storage mode is provided.

A movable phase change refrigeration container capable of realizing a single-zone double cold accumulation mode comprises: the multi-stage cold storage plate comprises a multi-stage cold storage plate and a first heat exchange tube connected with the multi-stage cold storage plate; the multi-stage cold storage plate and the second heat exchange tube are connected with the multi-stage cold storage plate; a first inlet connection and a first outlet connection connected to the first heat exchange tube; a second inlet connection and a second outlet connection connected to the second heat exchange tube; the first inlet joint, the first outlet joint, the first inlet joint and the second outlet joint are externally connected with a rapid cold charging device to charge cold to the freezing cold-storage plate and the cold-storage plate at each stage.

Preferably, the refrigeration cold storage plates and the freezing cold storage plates are arranged on the inner wall surface of the box body of the phase-change refrigerating box at intervals in a crossed manner.

Preferably, the first heat exchange tube and the second heat exchange tube are respectively arranged in the freezing cold storage plate and the cold storage plate, and each heat exchange tube is additionally provided with a connecting buckle on the extension part outside each cold storage plate.

Preferably, the number of the cold storage plates can be adjusted according to the required refrigerating capacity by a plurality of connecting buckles.

Preferably, the cold storage plate is filled with a cold storage temperature phase change material, and the cold storage plate is filled with a freezing temperature phase change material.

Preferably, the rapid cooling device can be connected with the corresponding inlet joint and the corresponding outlet joint according to the temperature required by goods storage, and further connected with the corresponding heat exchange tube, so that a cold storage mode or a freezing mode can be selected.

Preferably, after the rapid cold charging device is connected with the inlet joint, the refrigerant enters the corresponding heat exchange tube from the rapid cold charging device, evaporates and absorbs heat in the heat exchange tube, charges and cools the cold storage plates at each stage, and is discharged from the corresponding outlet joint and returns to the rapid cold charging device.

Preferably, different refrigerants are selected to be used as the quick cold charging device of the refrigeration working medium according to different temperature requirements, so that different refrigerants enter the heat exchange tube to meet different refrigeration requirements.

Preferably, the first inlet joint, the first outlet joint, the second inlet joint and the second outlet joint can be arranged at any position of the box body of the phase-change refrigeration box according to requirements, and a quick cold filling device is conveniently connected to fill cold into the phase-change refrigeration box.

In summary, the movable phase-change refrigeration container capable of realizing the single-zone double-cold-storage mode has the following beneficial effects:

1. compared with mechanical refrigeration, the phase change refrigerating box has the advantages that the fault rate is reduced, and the maintenance cost is saved;

2. compared with a single-temperature-zone phase-change refrigerating box, the refrigerating temperature of the phase-change refrigerating box is single, the switching between the refrigerating mode and the freezing mode can be realized, and the utilization rate and the flexibility of the phase-change refrigerating box are improved;

3. compared with a multi-temperature-zone phase-change refrigerating box without partition structures among temperature zones, the refrigerating cold storage plates and the freezing cold storage plates are arranged at intervals in a crossed mode, and the space utilization rate is improved;

4. the invention can flexibly select design and arrange a proper amount of cold storage plates according to the size of the phase-change refrigerating box and the transported goods.

Drawings

FIG. 1 is a schematic diagram showing the arrangement of cold accumulation plates and heat exchange tubes of a movable phase-change cold storage container capable of realizing a single-zone double-cold accumulation mode according to the present invention;

fig. 2 is a schematic view of a cold storage plate in a movable phase-change refrigerator capable of realizing a single-zone double cold storage mode according to the present invention.

Detailed Description

The technical contents, structural features, achieved objects and effects of the present invention will be described in detail with reference to the accompanying drawings by preferred embodiments, which are implemented on the premise of the technical solutions of the present invention, and detailed embodiments and specific operation procedures are given, but the scope of the present invention is not limited to the following embodiments.

As shown in fig. 1, it is a schematic view of a movable phase-change refrigeration container capable of implementing a single-zone dual cold storage mode according to the present invention, the phase-change refrigeration container comprises: the four-stage cold storage plates are sequentially connected through a second heat exchange tube 10, the four-stage freezing cold storage plates are sequentially connected through a first heat exchange tube 9, and the four-stage cold storage plates and the four-stage freezing cold storage plates are arranged at intervals in a crossed manner and are arranged on the inner side wall of the box body of the phase-change refrigerating box; and a first inlet joint 11, a first outlet joint 12, a second inlet joint 13 and a second outlet joint 14 which are arranged on the box body of the phase-change refrigerating box, wherein the first inlet joint 11 and the first outlet joint 12 can be respectively connected with the inlet end and the outlet end of the first heat exchange tube 9, and the second inlet joint 13 and the second outlet joint 14 can be respectively connected with the inlet end and the outlet end of the second heat exchange tube 10.

The first inlet joint 11, the first outlet joint 12, the second inlet joint 13 and the second outlet joint 14 are also externally connected with a rapid cooling device, so that a refrigerant in the rapid cooling device enters the corresponding heat exchange tubes, and the refrigerant is evaporated and absorbed in the heat exchange tubes to achieve the purpose of cooling the cold storage plate; according to the difference of the inlet joint and the outlet joint connected with the rapid cold charging device and the required transportation temperature, different refrigerants can be selected as the rapid cold charging device of the working medium so as to meet different cold storage requirements.

As shown in fig. 1 and 2, the four-stage cold storage plates are filled with n-tetradecane 15 as a phase change material in a 5 ℃ cold storage mode, and the four-stage cold storage plates are filled with a glycerol-sodium chloride binary solution 16 as a phase change material in a-18 ℃ cold storage mode.

The four-stage cold storage plate sequentially comprises a first cold storage plate 1, a second cold storage plate 3, a third cold storage plate 5 and a fourth cold storage plate 7; the four-stage freezing cold storage plate sequentially comprises a first freezing cold storage plate 2, a second freezing cold storage plate 4, a third freezing cold storage plate 6 and a fourth freezing cold storage plate 8.

The first heat exchange tube 9 and the second heat exchange tube 10 are respectively arranged in the four stages of freezing cold storage plates and the four stages of refrigerating cold storage plates; as shown in fig. 2, a plurality of connecting buckles 17 are additionally arranged on the first heat exchange tube 9 and the second heat exchange tube 10 at the joint of each stage of cold storage plate, the connecting buckles 17 are arranged on the parts of the first heat exchange tube 9 and the second heat exchange tube 10 extending out of the cold storage plate, and the cold storage plates of two adjacent stages can be connected through the connecting buckles 17; when a certain stage of cold storage plate needs to be replaced, the connecting buckles 17 at the front and the rear of the stage of cold storage plate can be disconnected, so that the cold storage plate can be flexibly replaced or the number of the installed cold storage plates can be controlled.

When cargoes need to be processed in a 5 ℃ refrigeration mode of the movable phase-change refrigeration box capable of realizing the single-zone double-cold-storage mode, R410a is adopted as a refrigerant in the rapid cold filling device, the evaporation pressure is controlled to be 0.30MPa, and the evaporation temperature is controlled to be 0.8 ℃; a second inlet joint 13 is connected with the rapid cold charging device outside the phase-change cold storage box, the phase-change cold storage box is internally connected with the inlet end of a second heat exchange tube 10 of the first refrigerated cold storage plate 1, the second heat exchange tubes 10 arranged inside each adjacent refrigerated cold storage plate are connected through a connecting buckle 17, the outlet end of the second heat exchange tube 10 of a fourth refrigerated cold storage plate 7 is connected with a second outlet joint 14, and the second outlet joint 14 is connected with the rapid cold charging device outside the phase-change cold storage box; the R410a in the rapid cold charging device enters a second heat exchange tube 10, sequentially passes through a first refrigerated cold storage plate 1, a second refrigerated cold storage plate 3, a third refrigerated cold storage plate 5 and a fourth refrigerated cold storage plate 7 in the second heat exchange tube 10, then is discharged out of the phase-change refrigerator through a second outlet joint 14, and returns to the rapid cold charging device to form a refrigeration cycle; in the second heat exchange tube 10, the R410a changes the material state of the tetradecane 15 in each stage of cold storage plate to achieve the purpose of rapidly charging cold to each stage of cold storage plate, thereby achieving the purpose of cold storage of goods at 5 ℃.

When goods need to be processed by using a-18 ℃ freezing mode of the phase-change refrigerating box, R134a is adopted as a refrigerant in a quick refrigerating device, the evaporation pressure is controlled to be 0.10MPa, and the evaporation temperature is controlled to be-26.07 ℃; a first inlet joint 11 is connected with the quick cold-charging device outside the phase-change refrigerator, the phase-change refrigerator is internally connected with the inlet end of a first heat exchange tube 9 of a first freezing cold-storage plate 2, the first heat exchange tubes 9 arranged inside each adjacent stage of freezing cold-storage plates are connected through a connecting buckle 17, the outlet end of the first heat exchange tube 9 of a fourth freezing cold-storage plate 8 is connected with a first outlet joint 12, and the first outlet joint 12 is connected with the quick cold-charging device outside the phase-change refrigerator; r134a in the rapid cold charging device enters a first heat exchange tube 9, sequentially passes through a first freezing cold storage plate 2, a second freezing cold storage plate 4, a third freezing cold storage plate 6 and a fourth freezing cold storage plate 8 in the first heat exchange tube 9, is discharged through a first outlet joint 12, and returns to the rapid cold charging device to form a refrigeration cycle; in the first heat exchange tube 9, the R134a achieves the purpose of rapidly cooling the various stages of refrigeration cold storage plates by changing the material state of the glycerol-sodium chloride binary solution 16 in the various stages of refrigeration cold storage plates, thereby achieving the purpose of freezing goods at-18 ℃.

While the invention has been described with reference to specific embodiments, the invention is not limited thereto, and various equivalent modifications and substitutions can be easily made by those skilled in the art within the technical scope of the invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.