阅读说明：本技术 一种预冷及冷藏一体式智能运输车 (Precooling and cold-stored integral type intelligence transport vechicle ) 是由 陈爱强 赵彩霞 张峻 党婷 段尚源 于 2019-09-30 设计创作，主要内容包括：本发明公开预冷及冷藏一体式智能运输车,包括保温车厢及置于保温车厢中的管式货架,实现保温车厢内降温的制冷系统,实现保温车厢内空气循环的冷风循环系统,制冷系统包括设在保温车厢中的蒸发器,冷风循环系统包括布置在蒸发器的下方的差压风机,保温车厢中一侧设导向板,以使预冷风冷气在保温车厢内在差压风机作用下形成循环流动以实现对货物快速预冷,且使送风在压差作用自保温车厢内上端及左端的送风风道经管式货架的管孔进入货架管道内后汇聚到右端回风风道流向所述差压风机的底部后吹向蒸发器而形成预冷风循环。本发明能提高果蔬的运输品质,最终实现提高经济效益的目标。(The invention discloses a precooling and refrigerating integrated intelligent transport vehicle, which comprises a heat preservation carriage and a tubular goods shelf arranged in the heat preservation carriage, a refrigerating system for realizing temperature reduction in the heat preservation carriage and a cold air circulating system for realizing air circulation in the heat preservation carriage, wherein the refrigerating system comprises an evaporator arranged in the heat preservation carriage, the cold air circulating system comprises a differential pressure fan arranged below the evaporator, and a guide plate is arranged at one side in the heat preservation carriage, so that precooling air and cold air form circulating flow in the heat preservation carriage under the action of the differential pressure fan to realize quick precooling of goods, and air supply ducts at the upper end and the left end in the heat preservation carriage under the action of differential pressure enter a goods shelf pipeline and then are converged into a return air duct at the right end to flow to the bottom of the differential pressure fan and then are blown to the evaporator to form precooling. The invention can improve the transportation quality of the fruits and the vegetables, and finally realizes the aim of improving the economic benefit.)

1. The utility model provides a precooling and cold-stored integral type intelligence transport vechicle, its characterized in that includes the heat preservation carriage and arranges in tubular goods shelves in the heat preservation carriage realizes the refrigerating system of cooling in the heat preservation carriage, realizes the cold wind circulation system of air cycle in the heat preservation carriage, refrigerating system is including establishing the evaporimeter in the heat preservation carriage, cold wind circulation system establishes the deflector including arranging the differential pressure fan in the below of evaporimeter in the heat preservation carriage to make precooling air-cooled gas form the circulation under the differential pressure fan effect in the heat preservation carriage and flow and realize the quick precooling to the goods, and make the air supply in differential pressure effect self preservation carriage after the pore of upper end and the air supply duct management formula goods shelves of left end gets into the goods shelves pipeline right-hand member return air duct flow direction the bottom of differential pressure fan blows to the evaporimeter and forms precooling wind circulation.

2. The integrated precooling and refrigerating intelligent transport vehicle as claimed in claim 1, wherein an internal gas temperature sensor and a gas composition sensor are arranged in the heat preservation carriage, an external gas temperature sensor is arranged outside the heat preservation carriage, and the internal gas temperature sensor, the gas composition sensor and the external gas temperature sensor are connected with a control system.

3. The integrated pre-cooling and cold storage intelligent transport vehicle as claimed in claim 1, wherein the refrigeration system comprises a variable frequency compressor, a condenser and an electronic expansion valve, an air suction port and an air exhaust port of the variable frequency compressor are respectively connected with an outlet of the evaporator and an inlet of the condenser, an outlet of the condenser is connected with an inlet of the electronic expansion valve, an inlet of the cold evaporator is connected with an outlet of the electronic expansion valve, and the variable frequency compressor, the condenser and the electronic expansion valve are connected with the control system.

4. The integrated pre-cooling and refrigerating intelligent transport vehicle as claimed in claim 1, wherein the differential pressure fan is connected with a control system, and the control system is used for controlling the operation rate of the differential pressure fan.

5. The integrated pre-cooling and refrigerating intelligent transport vehicle as claimed in claim 2, wherein the control system is connected with the vehicle-mounted display screen through a network node, and transmits data of logistics parameters to the vehicle-mounted display screen to realize vehicle-mounted monitoring of the logistics parameters.

6. The integrated precooling and refrigerating intelligent transport vehicle as claimed in claim 2, wherein the control system is connected with the cloud data platform through a network node, and transmits data of logistics parameters to the cloud data platform to realize dynamic monitoring of the logistics parameters.

Technical Field

The invention relates to the technical field of transport vehicles, in particular to a precooling and refrigerating integrated intelligent transport vehicle.

Background

The fruits and vegetables are transported at normal temperature or under a simple cold chain, the metabolism is vigorous, and microorganisms are easy to breed. The core link of the whole cold chain transportation lies in the instant precooling and the timely cold storage transportation after the fruit and vegetable is produced. The fruit and vegetable that does not precool can't carry out rapid cooling to the fruit and vegetable when adopting the transportation of refrigerated transport car, causes fresh-keeping effect to show and descends, even possess precooling and refrigerated transport condition simultaneously, the fruit and vegetable also can consume a large amount of manpower and materials to the repeated loading and unloading process of precooling apparatus and refrigerated transport car, is showing incremental cost. In addition, the existing refrigerator car only realizes temperature control by starting and stopping a refrigerating system, the accumulation mode of goods often causes uneven temperature in the refrigerator car, and effective monitoring on the quality of fruits and vegetables is lacked, so that the preservation quality is reduced. Therefore, the refrigerated transport vehicle with the functions of precooling, refrigerating and quality monitoring is very important for the fruit and vegetable cold chain transportation industry.

Disclosure of Invention

The invention aims to provide a precooling and refrigerating integrated intelligent transport vehicle aiming at the technical defects in the prior art.

The technical scheme adopted for realizing the purpose of the invention is as follows:

the utility model provides a precooling and cold-stored integral type intelligence transport vechicle, includes the heat preservation carriage and arranges in tubular goods shelves in the heat preservation carriage realizes the refrigerating system of cooling in the heat preservation carriage, realizes the cold wind circulation system of air cycle in the heat preservation carriage, refrigerating system is including establishing the evaporimeter in the heat preservation carriage, cold wind circulation system includes at the differential pressure fan who arranges in the below of evaporimeter, and the deflector is established to one side in the heat preservation carriage to make precooling air cold gas form the circulation flow under the differential pressure fan effect in the heat preservation carriage, realize the quick precooling to the goods, and make the air supply assemble right-hand member return air duct flow direction after the pipe hole of upper end and the air supply duct management formula goods shelves of left end gets into in the goods shelves pipeline in differential pressure effect self preservation carriage blow to the evaporimeter and form precooling wind circulation behind differential.

Further, be equipped with inside gas temperature sensor and gas composition sensor in the heat preservation carriage, the outside gas temperature sensor who establishes in the outside of heat preservation carriage, inside gas temperature sensor and gas composition sensor, outside gas temperature sensor are connected with control system.

Furthermore, the refrigerating system comprises a variable frequency compressor, a condenser and an electronic expansion valve, wherein an air suction port and an air exhaust port of the variable frequency compressor are respectively connected with an outlet of the evaporator and an inlet of the condenser, an outlet of the condenser is connected with an inlet of the electronic expansion valve, an inlet of the cold evaporator is connected with an outlet of the electronic expansion valve, and the variable frequency compressor, the condenser and the electronic expansion valve are connected with the control system.

Further, the differential pressure fan is connected with a control system, and the control system is used for controlling the operation rate of the differential pressure fan.

Furthermore, the control system is connected with the vehicle-mounted display screen through the network node, and transmits the data of the logistics parameters to the vehicle-mounted display screen, so that the vehicle-mounted monitoring of the logistics parameters is realized.

Furthermore, the control system is connected with the cloud data platform through the network node, and transmits the data of the logistics parameters to the cloud data platform, so that the dynamic monitoring of the logistics parameters is realized.

The invention is based on a differential pressure precooling mode, information monitoring and an Internet of things technology, realizes the dynamic monitoring of the goods precooling and fruit and vegetable state parameters in the logistics process, improves the temperature control precision of the refrigerator car, reduces the quality deterioration rate of the goods in the cold chain transportation process, improves the transportation quality of the fruits and vegetables, and finally realizes the aim of improving the economic benefit.

Drawings

FIG. 1 is a schematic structural diagram of an integrated pre-cooling and refrigerating intelligent transport vehicle according to the present invention;

FIG. 2 is a flow chart illustrating different mode control;

fig. 3 shows a control diagram.

Detailed Description

The invention is described in further detail below with reference to the figures and specific examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As shown in figure 1, the precooling and refrigerating integrated intelligent transport vehicle comprises a heat preservation carriage 1 and a tubular goods shelf 12 arranged in the heat preservation carriage, wherein an electric air valve 13 is arranged at the left end of the tubular goods shelf 12, a fruit and vegetable basket 1 is arranged on the tubular goods shelf 12, a refrigerating system for providing cold energy for the heat preservation carriage and a cold air circulating system for realizing cold air circulation in the heat preservation carriage are arranged in the refrigerating system, the refrigerating system comprises an evaporator 3 arranged in the heat preservation carriage, the cold air circulating system comprises a differential pressure fan 8 started when precooling is needed, the differential pressure fan is arranged below the evaporator, a guide plate 2 is arranged at one side of the heat preservation carriage, so that precooling air and cold air form circulating flow in the heat preservation carriage under the action of the differential pressure fan 8 to realize quick precooling of goods, and air supply at the upper end and the left end in the heat preservation carriage under the action of differential pressure is converged into a return air duct to flow towards the differential pressure fan after entering a pipe hole The bottom of the fan blows to the evaporator to form a pre-cooling air circulation.

The refrigeration system comprises an evaporator 3, a variable frequency compressor 4, a condenser 5 and an electronic expansion valve 6 which are connected in sequence by pipelines, and the evaporator, the variable frequency compressor, the condenser and the electronic expansion valve form a closed refrigeration system.

When the refrigerating system works, the inverter compressor 4 sucks the low-temperature and low-pressure refrigerant vapor generated by the evaporator 3 into the cylinder, the low-temperature and low-pressure refrigerant vapor is compressed by the inverter compressor 4, and when the pressure is increased (the temperature is also increased) to be slightly higher than the pressure in the condenser 5, the high-pressure refrigerant vapor in the cylinder is discharged into the condenser 5. The high-temperature high-pressure refrigerant vapor in the condenser exchanges heat with air (or normal-temperature water) with lower temperature to be condensed into liquid refrigerant, and the liquid refrigerant is cooled (decompressed) by the electronic expansion valve 6 and then enters the evaporator 3, and is vaporized after absorbing the heat of a cooled object in the evaporator 3. The cooled fruits and vegetables are cooled, and the refrigerant steam is sucked by the variable frequency compressor 4, so that a cycle is completed through four processes of compression, condensation, expansion and evaporation in the refrigerating system.

In the invention, the pressure difference caused by the differential pressure fan 8 of the cold air circulating system provides power for the whole air system to circulate, so that air in the refrigerated vehicle flows to form convection with goods, field heat is rapidly removed, and the water loss rate of fruits and vegetables is reduced. Air enters the evaporator 3 from the inlet of the differential pressure fan 8 to increase power, and then is subjected to heat exchange with the refrigeration system in the evaporator 3 in a circulating manner, so that the temperature of the air is reduced, and the air is discharged from the evaporator 3 and reaches the whole goods placing position under the action of pressure difference and gravity from the upper part of the heat preservation carriage so as to reduce the temperature of fruits and vegetables.

The pressure in the pipeline of the tubular goods shelf 12 is lower under the action of the differential pressure fan 8, cold air enters the pipeline through the air return holes in the tubular goods shelf 12 under the action of pressure difference after heat exchange with fruits and vegetables and is converged to the air return pipeline on the right side, wherein the air return holes in the tubular goods shelf are uniformly arranged at the positions corresponding to the goods placing positions on the upper part of the pipeline, so that the cold air can conveniently pass through the fruits and vegetables, and the air reaches the inlet of the differential pressure fan 8 again and enters the next air supply circulation.

In order to realize intelligent control, in the invention, the differential pressure fan is connected with a control system, the control system is used for controlling the operation rate control of the differential pressure fan, an internal gas temperature sensor and a gas composition sensor are arranged in the heat preservation carriage, an external gas temperature sensor is arranged outside the heat preservation carriage, the internal gas temperature sensor, the gas composition sensor and the external gas temperature sensor are connected with the control system (control center), the temperature inside and outside the heat preservation carriage and the internal gas composition can be detected through the sensors, if the air cooling rate in the carriage is lower than a set value after the refrigeration system is started, the goods are considered not to be precooled, and if the air cooling rate is higher than the set value, the goods are considered to be precooled; the quality change condition of the transported fruits and vegetables can be judged by utilizing the concentration of ethylene and carbon dioxide in the air in the carriage.

If the goods are identified as precooled goods, the goods can directly enter a refrigeration mode after being put in storage, at the moment, the control center controls the differential pressure fan to run at a low speed, the compressor of the refrigeration system runs at a low frequency, and the electric air valve 13 at the left end of the tubular goods shelf 12 is opened; if the goods are identified as goods which are not pre-cooled, the control center controls the starting of the differential pressure fan to run at a high speed, the refrigeration compressor runs at a high frequency, the electric air valve 13 at the front end of the tubular goods shelf 12 is closed, cold air is forced to pass through the transported fruits and vegetables under the action of pressure difference, the heat exchange rate of the fruits and vegetables is improved so that the fruits and vegetables can be pre-cooled to a set temperature within 2-4 hours, and the control center logically controls the fruits and vegetables to enter a refrigeration mode after the pre-cooling is.

In addition, through the real-time meteorological temperature parameter of temperature, gas composition and the car outside in each carriage of a plurality of sensor collaborative real-time supervision, based on communication technology, like 5G communication technology, with data transmission to high in the clouds data platform, realize the dynamic monitoring of logistics parameter. Meanwhile, after receiving signals from the sensors and the cloud data platform, the control center rapidly acts to control a refrigerating unit (refrigerating system) of the refrigerator car to adjust refrigerating capacity, so that the quality of fruits and vegetables is effectively monitored.

When the device works, the sensor monitoring system is used for identifying whether the fruits and vegetables are subjected to precooling treatment, and the control center control system enters a precooling or refrigerating mode, so that the cold load of a refrigerator car can be effectively reduced, and the energy-saving operation of the refrigerating storage and transportation device is realized; the pressure difference caused by the differential pressure fan in the refrigerator car provides power for the whole air system to circulate, so that the aim of quickly and uniformly removing the field heat of the fruits and the vegetables is fulfilled, the fresh-keeping effect of the fruits and the vegetables is effectively maintained, and the transportation cost is also reduced; the pressure in the pipe is small due to the action of the differential pressure fan, and the airflow enters the pipeline through the air return hole of the pipe-type shelf and is converged to the air return pipeline on the right side, so that the uniformity of an internal flow field can be effectively improved; the sensor module is integrated on the basis of the internet of things technology, the refrigerating capacity of the refrigerator car is regulated and controlled, the quality of fruits and vegetables is effectively monitored, the temperature control precision of the refrigerator car is improved, the quality deterioration rate of goods in the cold chain transportation process is reduced, and the freshness keeping quality of the fruits and vegetables is maintained.

The invention adopts the differential pressure caused by the differential pressure fan to provide power for the circulation of the whole air system, enhances the convection heat transfer effect, achieves the purpose of quickly precooling goods in the refrigerated truck, effectively reduces the cold load of the refrigerated truck and realizes the energy-saving operation of the refrigerated storage and transportation device.

The air supply of the invention can enter the goods shelf pipeline through the pipe type goods shelf air return holes under the action of pressure difference and converge to the right side air return pipeline, thereby reducing the flow field disturbance caused by large-area convergence, improving the uniformity of the flow field in the refrigerator car, simultaneously utilizing the pressure difference to enable the fluid to pass through the fruit and vegetable storage area, strengthening the heat exchange between the fruit and vegetable and the air, and reducing the time required by cooling the fruit and vegetable.

In addition, the information monitoring and control are tightly combined, and the temperature fluctuation in the refrigerated vehicle can be reduced through real-time monitoring and real-time regulation and control and correction of microenvironment parameters, so that the quality change of fruits and vegetables can be effectively predicted and monitored. The refrigerating capacity is matched with the combined load as much as possible, thereby greatly reducing the power consumption of the operation of the refrigerating system and saving energy.

Furthermore, through the combination of information monitoring and internet of things, the quality safety of products in the actual process of cold-chain logistics is effectively ensured, the whole process of cold-chain logistics can be monitored in real time and traced, and the perception level of the quality of the cold-chain logistics is improved.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.