CN110758924A - Cold chain unit distribution box with independent cold accumulation space - Google Patents
Cold chain unit distribution box with independent cold accumulation space Download PDFInfo
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- CN110758924A CN110758924A CN201911157850.1A CN201911157850A CN110758924A CN 110758924 A CN110758924 A CN 110758924A CN 201911157850 A CN201911157850 A CN 201911157850A CN 110758924 A CN110758924 A CN 110758924A
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- cold
- space
- cold accumulation
- fan
- evaporator
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D88/00—Large containers
- B65D88/74—Large containers having means for heating, cooling, aerating or other conditioning of contents
- B65D88/744—Large containers having means for heating, cooling, aerating or other conditioning of contents heating or cooling through the walls or internal parts of the container, e.g. circulation of fluid inside the walls
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
- B65D81/18—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient
Abstract
The invention discloses a cold chain unit distribution box with an independent cold accumulation space, which comprises a machine box body and a cold accumulation space arranged in the machine box body, wherein a cold accumulation device is arranged in the cold accumulation space, and an evaporator with a fan is arranged in the machine box body; the cold plate temperature control system can better ensure the temperature management of a cargo space, avoid the risk of no temperature control on cold chain cargos due to the failure of an air cooler system, well reserve the capability of a cold plate for realizing more precise temperature difference control and temperature maintenance, avoid the problem of larger temperature difference in the temperature control process caused by the continuous use of the air cooler for refrigeration and temperature maintenance, and meet the distribution demand with more precise requirements on temperature.
Description
Technical Field
The invention belongs to the technical field of cold chain distribution, and particularly relates to a cold chain unit distribution box with an independent cold accumulation space.
Background
The cold chain transportation requires keeping a low temperature state in transportation links such as medium-and long-distance transportation and short-distance distribution, and mainly relates to low-temperature transportation tools such as railway refrigerated vehicles, refrigerated automobiles, refrigerated ships and refrigerated containers.
The temperature control methods generally used at present mainly include the following: (1) the cold chain unit distribution box is provided with an air cooler, and the air cooler blows cold air to the cargo carrying space; (2) the cold chain unit distribution box is provided with a cold storage plate arranged in the cargo space, and the cold storage plate is charged with cold by the cold chain unit distribution box with an air cooler. The cold chain unit distribution box with the cold accumulation plate can work independently by the cold accumulation plate, can also work independently by an air cooler for blowing cold air to a cargo carrying space, and can also work simultaneously by the cold accumulation plate and the air cooler; (3) the cold chain unit distribution box is provided with a cold storage plate arranged in a cargo space, the cold storage plate is frozen and cooled by an external refrigerating device, and the box body is not provided with equipment capable of refrigerating.
In practical use, the above-described method has the following disadvantages:
(1) when the cold chain goods are subjected to temperature control by using a mode that the cold chain unit distribution box is provided with an air cooler, no temperature control risk is brought to the cold chain goods once a power supply of an air cooler system fails; (2) the cold chain unit distribution box is provided with an air cooler and a cold storage plate, when goods exist and need to be charged and cooled, the temperature for charging and cooling the cold storage plate is greatly lower than the temperature capable of being born by goods transportation, and the goods are frozen; (3) when using cold chain unit delivery case to carry out temperature control from taking the cold-storage plate mode to the cold chain goods, the cold-storage plate will diminish gradually with the temperature difference between the goods, when no condition makes the cold drawing cooling once more, cold chain unit delivery case will lose the temperature control ability to the cold chain goods.
Disclosure of Invention
In order to solve the problems in the prior art, the invention aims to provide a cold chain unit distribution box with an independent cold accumulation space, which better solves the problems of the existing cold chain unit distribution box, and when an air cooler and a cold accumulation plate control the temperature of cold chain goods, when the cold accumulation plate needs to be cooled by the air cooler, the temperature of the cold accumulation plate is greatly lower than the control temperature of the cold chain goods, so that the cold chain goods are frozen; in addition, the cold chain unit distribution box has the defect that the temperature in the box cannot be maintained for a long time after power failure.
In order to achieve the purpose, the invention adopts the technical scheme that the cold chain unit distribution box with the independent cold accumulation space comprises a machine box body and a cold accumulation space arranged in the machine box body, wherein a cold accumulation device is arranged in the cold accumulation space, an evaporator with a fan is arranged in the machine box body, and the evaporator with the fan is used for providing forced convection cold air for a cargo space; the air conditioner further comprises a compressor connected to the outlet ends of the cold accumulation device and the evaporator with the fan and a condenser connected to the outlet end of the compressor, wherein the refrigerant outlet end of the condenser is connected to an expansion valve, the expansion valve is used for controlling the pressure and the temperature of a refrigerant, and the expansion valve is connected with the inlet end of the evaporator with the fan or the inlet end of the cold accumulation device through a reversing valve.
Furthermore, the evaporator with the fan comprises a fan and an evaporator, the refrigerant inlet end of the evaporator with the fan is connected with the reversing valve, and the outlet end of the evaporator is connected to the inlet end of the compressor.
Furthermore, the cold accumulation device consists of a plurality of cold accumulation devices, and the plurality of cold accumulation devices are arranged at equal intervals or are arranged at unequal intervals; but also at any angle.
Furthermore, a fan space is arranged in the machine box body, the evaporator with the fan is arranged in the fan space, and a circulating air outlet and a circulating air inlet which are communicated with the cargo carrying space are formed in the fan space.
Further, the fan space and the cold accumulation space are arranged adjacently, the fan space and the cold accumulation space are separated through the partition plate, the first rotatable baffle plate is arranged at one end, close to the circulating air inlet, of the partition plate, and the circulating air inlet is communicated with the fan space or the cold accumulation space through adjusting the angle of the first rotatable baffle plate.
Further, the other end of baffle is provided with the rotatable baffle of second, and the rotatable baffle of second is used for the intercommunication or separates fan space and cold-storage space, and when circulated air entry and cold-storage space intercommunication, through the rotatable baffle of rotatory second, realize cold-storage space and fan space intercommunication, circulated air gets into by the circulated air entry, flows through in proper order after cold-storage board and the fan space, flows out from the circulated air export.
Further, a heat pump space is further arranged in the machine box body, and all components forming the heat pump system except the evaporator are arranged in the heat pump space.
Further, the heat pump space and the cold accumulation space are arranged adjacently, and the heat pump space and the cold accumulation space are sealed and insulated.
Further, the cold accumulation device is a cold accumulation plate or other cold accumulation containers. Furthermore, the evaporator with the fan is arranged at a circulating air outlet position communicated with the cargo space.
Compared with the prior art, the invention has at least the following beneficial effects that the invention adopts a combined use mode of the evaporator with the fan and the cold accumulation device, can better ensure the temperature management of the cargo space, avoids the risk of no temperature control on cold chain cargos caused by the failure of an air cooler system, well keeps the capability of a cold plate for realizing more precise temperature difference control and temperature maintenance, avoids the problem of larger temperature difference in the temperature control process of always using the air cooler for refrigeration and temperature maintenance, and can meet the distribution demand with more precise requirements on temperature; in addition, through setting up to the structure that the cold-storage device filled cold, can effectually carry out the replenishment of cold volume for the cold-storage device, simultaneously, because the cold-storage device sets up in independent cold-storage space, cold-storage space and cold chain goods space are relatively independent, have not only realized the cold-storage of cold-storage device to the freeze injury that causes the cold chain goods when effectual solution cools off the cold-storage device with the air-cooler.
Furthermore, the invention reasonably configures the fan space, the cold accumulation space and the cold chain cargo space, the cold accumulation device is not arranged in the cold chain cargo space, the occupancy rate of the cold chain cargo space is enlarged to the maximum extent, and meanwhile, through the reasonable design of the invention, the cold accumulation device is subjected to cold accumulation for reducing the temperature through switching of the refrigerant loop within a certain constant time after the temperature control of the cold chain cargo reaches a preset target. Once the power supply of the heat pump system breaks down, the cold accumulation device can continuously blow cold air to the cold chain cargo space, and the temperature management time of the refrigerating space to the cargo space is greatly prolonged.
Furthermore, compared with the prior art, the technical scheme provided by the invention has higher precooling efficiency, and can effectively reduce the precooling time of the cold chain cargo space when cold air is blown to the space through the air cooler and the cold accumulation device simultaneously. When the power supply of the heat pump system is close to the bank of the cold chain unit distribution box, the cold storage device is subjected to cold storage through the fixed power supply, the use of the portable power source is reduced, and the mobile service time of the portable power source can be effectively prolonged.
In addition, the invention effectively enlarges the cargo carrying space while solving the problem that the prior cold chain unit distribution box damages cold chain goods when cooling the cold accumulation device; moreover, the air cooler and the cold accumulation device can be used independently or simultaneously according to the actual use requirements of users, the temperature control means of the cold chain goods can be increased, and after the cold chain goods precooling device is flexibly applied, the scheme of the invention can solve the problem of long cold chain goods precooling time, effectively prolong the temperature management time of a cold chain goods space and strengthen the refrigeration function of the cold chain distribution box.
Furthermore, the mobile power supply is changed into an auxiliary power supply means by adding and strengthening the use of the fixed power supply, so that the risk of power failure is reduced, fuel used when the mobile power supply supplies power is saved, and the long-distance conveying capacity of the cold chain unit distribution box can be effectively improved.
Drawings
Fig. 1 is a schematic view of the dispensing box of the present invention in a state where the evaporator with fan is operated alone.
Fig. 2 is a schematic view showing the distribution box of the present invention in a state where the cool storage plate maintains temperature, in which the evaporator with the fan is operated and the evaporator is not operated.
Fig. 3 is a schematic view of the state in which the evaporator with the fan and the cold storage plate are simultaneously operated to control the temperature of the cargo space.
Fig. 4 is a schematic structural diagram of a connection relationship between components in an embodiment of the present invention.
Fig. 5 is a schematic structural diagram of a connection relationship between components in another embodiment of the present invention.
In the figure, 1-evaporator, 2-cold plate, 3-condenser, 4-compressor, 5-expansion valve, 6-reversing valve, 7-fan, 8-first rotatable baffle, 9-second rotatable baffle, 10-cargo space, 11-machine box.
Detailed Description
The invention is further described with reference to the following figures and specific embodiments.
As shown in fig. 1-5, the cold chain unit distribution box with an independent cold accumulation space provided by the present invention comprises a machine box body 11 and a cold accumulation space arranged in the machine box body 11, wherein a cold accumulation device 2 is arranged in the cold accumulation space, and the cold accumulation device 2 is a cold accumulation plate or all other cold accumulation containers; a fan space is further arranged in the machine box body 11, the evaporator 1 with the fan 7 is arranged in the fan space, and the fan space is provided with a circulating air outlet and a circulating air inlet which are communicated with the cargo space 10; the independent cold accumulation space is arranged, so that damage to goods in the cargo space 10 caused by cooling of the cold accumulation device 2 is effectively avoided, and the damage to the goods in the cargo space is caused because the temperature of the cold accumulation plate is greatly lower than the control temperature of the goods in the cold chain, such as freezing temperature of-18 ℃ and cold storage temperature of 5 ℃ or so, when the cold accumulation plate needs to be cooled by an air cooler in the existing cold chain transportation; the independent cold accumulation space is adopted, so that the influence on the humidity of the cargo bin is small during cold accumulation, and the temperature control of the cargo bin can be more accurate; when a diesel engine for power generation is damaged in the transportation process, the cold accumulation device is used for refrigerating the cargo compartment, and the emergency repair time can be provided.
The evaporator 1 with the fan 7 comprises a fan 7 and an evaporator, the refrigerant inlet end of the evaporator with the fan 7 is connected with the reversing valve 6, the outlet end of the evaporator is connected to the inlet end of the compressor 4, and the evaporator 1 with the fan 7 is used for providing forced convection cold air for the cargo space 10; the air conditioner further comprises a compressor 4 connected to the outlet ends of the cold accumulation device 2 and the evaporator with the fan 7 and a condenser 3 connected to the outlet end of the compressor 4, wherein the refrigerant outlet end of the condenser 3 is connected to an expansion valve 5, the expansion valve 5 is used for controlling the pressure and the temperature of a refrigerant, and the expansion valve 5 is connected with the inlet end of the evaporator 1 with the fan 7 or the inlet end of the cold accumulation device 2 through a reversing valve 6. In one embodiment of the invention, the fan space and the cold accumulation space are arranged adjacently, and are separated by the partition board, one end of the partition board close to the circulating air inlet is provided with the first rotatable baffle 8, and the communication between the circulating air inlet and the fan space or the cold accumulation space is realized by adjusting the angle of the first rotatable baffle 8; the partition board is also provided with an airflow channel for connecting the fan space and the cold accumulation space, the other end of the partition board is provided with a second rotatable baffle 9, and the second rotatable baffle 9 is used for controlling the opening and closing of the airflow channel so as to communicate or separate the fan space and the cold accumulation space; the first rotatable baffle 8 and the second rotatable baffle 9 can rotate at any angle.
As shown in fig. 1, the cargo space 10 is cooled by using an air cooler (i.e. the evaporator (1) with the fan 7) to work alone, which is a normal cooling; by adjusting the first rotatable flap 8 to connect the circulating air inlet to the fan space, the second rotatable flap 9 is in a position to close the air flow path, and the evaporator with the fan delivers forced convection cooling air to the cargo space 10.
As shown in fig. 2, when the distribution box is in a state of maintaining the temperature of the cold storage plate, the fan in the evaporator with the fan works, the evaporator does not work, the first rotatable baffle 8 is adjusted to enable the circulating air inlet to be communicated with the cold storage space, the second rotatable baffle 9 rotates to open the air flow channel, circulating air enters from the circulating air inlet, flows through the cold storage plate and the fan space in sequence, and is blown by the fan, and auxiliary circulating air flows out from the circulating air outlet; when the cold accumulation device in the cold accumulation space is used for maintaining the temperature operation, the problem of long cold-chain goods precooling time can be solved, the temperature management time of the cold-chain goods space is effectively prolonged, the refrigeration function of the cold-chain distribution box is enhanced, the temperature maintenance of the cold accumulation device has the characteristic of small fluctuation compared with an air cooler, and the temperature maintenance effect is better.
As shown in fig. 3, the cargo space 10 is controlled by temperature for the evaporator with the fan and the cold storage plate to work simultaneously, and in this state, if the user needs to quickly control the temperature of the cargo space 10, so that the temperature of the cargo space 10 meets the requirement, the air cooler and the cold storage plate are controlled to work simultaneously to control the temperature of the cargo space 10, which can save time.
In one embodiment of the present invention, as shown in fig. 4 and 5, the cold storage device 2 is composed of a plurality of cold storage devices, and the plurality of cold storage devices 2 are arranged at equal intervals or at unequal intervals; the cold accumulation devices can be arranged at any angle, for example, the cold accumulation devices are cold accumulation plates which are arranged in the cold accumulation space in parallel with the axial direction of the vehicle body; the cold accumulation device is a cold accumulation plate which is arranged in the cold accumulation space in a direction vertical to the axis direction of the vehicle body; the heat pump type air conditioner is characterized in that a heat pump space is further arranged in the machine box body 11, all components forming a heat pump system except for the evaporator are arranged in the heat pump space, the heat pump space and the cold accumulation space are arranged adjacently, and the heat pump space and the cold accumulation space are sealed and insulated.
Through the structure, the cold chain unit distribution box has the capability of maintaining the temperature in the box for a long time after power failure, and can perform various operations according to the specific use requirements of users.
Claims (10)
1. The cold chain unit distribution box with the independent cold accumulation space is characterized by comprising a machine box body (11) and the cold accumulation space arranged in the machine box body (11), wherein a cold accumulation device (2) is arranged in the cold accumulation space, an evaporator (1) with a fan (7) is arranged in the machine box body (11), and the evaporator (1) with the fan (7) is used for providing forced convection cold air for a cargo space (10); still including connecting compressor (4) and the condenser (3) of connecting at compressor (4) exit end at cold-storage device (2) and the evaporimeter exit end of taking fan (7), the refrigerant exit end of condenser (3) is connected to expansion valve (5), expansion valve (5) are used for controlling the pressure and the temperature of refrigerant, expansion valve (5) are connected with the entry end of taking evaporimeter (1) of fan (7) or the entry end of cold-storage device (2) respectively through switching-over valve (6).
2. The cold chain unit distribution box with the independent cold accumulation space as claimed in claim 1, wherein the evaporator (1) with the fan (7) comprises the fan (7) and the evaporator, the refrigerant inlet end of the evaporator with the fan (7) is connected with the reversing valve (6), and the outlet end of the evaporator is connected to the inlet end of the compressor (4).
3. The cold chain unit distribution box with the independent cold accumulation space according to claim 1 or 2, wherein the cold accumulation devices (2) are composed of a plurality of cold accumulation devices, and the plurality of cold accumulation devices (2) are arranged at equal intervals or unequal intervals, and can be arranged at any angle.
4. The cold chain unit distribution box with the independent cold accumulation space as claimed in claim 1, wherein a fan space is provided in the machine box body (11), the evaporator (1) with the fan (7) is provided in the fan space, and a circulating air outlet and a circulating air inlet which are communicated with the cargo space (10) are opened on the fan space.
5. The cold chain unit distribution box with the independent cold accumulation space as claimed in claim 4, wherein the fan space is arranged adjacent to the cold accumulation space and is separated from the cold accumulation space by a partition plate, a first rotatable baffle (8) is arranged at one end of the partition plate close to the circulating air inlet, and the communication between the circulating air inlet and the fan space or the cold accumulation space is realized by adjusting the angle of the first rotatable baffle (8).
6. The cold chain unit distribution box with the independent cold accumulation space as claimed in claim 5, wherein the other end of the partition board is provided with a second rotatable baffle (9), the second rotatable baffle (9) is used for communicating or separating the fan space and the cold accumulation space, when the circulating air inlet is communicated with the cold accumulation space, the cold accumulation space is communicated with the fan space by rotating the second rotatable baffle (9), circulating air enters from the circulating air inlet, and flows out from the circulating air outlet after sequentially flowing through the cold accumulation plate and the fan space.
7. Cold chain unit distribution box with independent cold accumulation space according to claim 6, characterized in that the machine box (11) is provided with a heat pump space, and the heat pump space is provided with all the components of the heat pump system except the evaporator.
8. The cold chain unit distribution box with an independent cold accumulation space according to claim 7, wherein the heat pump space is disposed adjacent to the cold accumulation space, and the heat pump space and the cold accumulation space are sealed and insulated from each other.
9. Cold chain unit distribution box with independent cold accumulation space according to claim 4, characterized in that the cold accumulation device (2) is a cold accumulation plate or all other cold accumulation containers.
10. Cold chain unit distribution box with independent cold accumulation space according to claim 1, characterized in that the evaporator (1) with fan (7) is placed in the position of the circulating air outlet communicating with the cargo space (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911157850.1A CN110758924A (en) | 2019-11-22 | 2019-11-22 | Cold chain unit distribution box with independent cold accumulation space |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911157850.1A CN110758924A (en) | 2019-11-22 | 2019-11-22 | Cold chain unit distribution box with independent cold accumulation space |
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| Publication Number | Publication Date |
|---|---|
| CN110758924A true CN110758924A (en) | 2020-02-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911157850.1A Pending CN110758924A (en) | 2019-11-22 | 2019-11-22 | Cold chain unit distribution box with independent cold accumulation space |
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| Country | Link |
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| CN (1) | CN110758924A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111517011A (en) * | 2020-06-29 | 2020-08-11 | 烟台汽车工程职业学院 | Ultra-low temperature fresh-keeping transportation box based on multiple environment interaction |
| CN115477073A (en) * | 2021-05-31 | 2022-12-16 | 浙江雪波蓝科技有限公司 | Movable preservation box and cold chain carrier with same |
-
2019
- 2019-11-22 CN CN201911157850.1A patent/CN110758924A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111517011A (en) * | 2020-06-29 | 2020-08-11 | 烟台汽车工程职业学院 | Ultra-low temperature fresh-keeping transportation box based on multiple environment interaction |
| CN111517011B (en) * | 2020-06-29 | 2020-09-25 | 烟台汽车工程职业学院 | Ultra-low temperature fresh-keeping transportation box based on multiple environment interaction |
| CN115477073A (en) * | 2021-05-31 | 2022-12-16 | 浙江雪波蓝科技有限公司 | Movable preservation box and cold chain carrier with same |
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