Refrigerated transport device

Abstract

The utility model provides a refrigerated transport device. The refrigerated transport device comprises an energy storage structure; the refrigerating system comprises a compressor, a condenser and an evaporator which form a refrigerant refrigerating cycle, and the energy storage structure is in transmission connection with the compressor through a clutch structure. According to the refrigerated transport device, compressed fluid (such as compressed liquid nitrogen) is stored through the energy storage structure for energy storage, then controllable connection with working parts in a refrigerating system is achieved through the clutch structure, and the working reliability and stability of the refrigerating system are guaranteed. Compared with the refrigerated transport device and the dry ice which are the same in size, the energy storage structure can achieve longer-time cold supply, the problem that in the prior art, the dry ice is adopted as a cold source, and consequently the occupied space is large is effectively solved, and the transport efficiency of the aircraft is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cold chain transportation, in particular to a refrigerated transportation device. Background Art

[0002] Air transport is also known as aircraft transport, or "air transport" for short. It is a mode of transport that uses aircraft as a means of transport to transport goods under the conditions of air routes and airports. In my country's transportation industry, the proportion of air transport's cargo volume in the national transportation volume is still relatively small, and it mainly undertakes long-distance passenger transport tasks. With the rapid development of logistics, air transport will also play an important role in cargo transportation. Some goods require refrigeration during air transport. Due to the particularity of air transport, refrigeration work generally cannot use the aircraft's electrical system or hydraulic system. If the aircraft's own electrical system or hydraulic system is used to provide refrigeration work energy, if the refrigeration system fails, it will affect the aircraft's navigation safety to a certain extent.

[0003] At present, dry ice sublimation refrigeration is often used for cold chain air transportation of goods. Although this method can provide sufficient cooling capacity, excessive use of dry ice refrigeration will accelerate the greenhouse effect to a certain extent and affect the atmospheric environment. At the same time, in order to ensure the refrigeration effect, a large amount of dry ice is required, which will cause a reduction in the aircraft's carrying capacity and seriously affect the efficiency of air transportation. Utility Model Content

[0004] In order to solve the technical problem in the prior art that dry ice in air transportation occupies a large amount of aircraft space and causes low transportation efficiency, a refrigerated transportation device is provided which utilizes an energy storage structure to provide energy to a refrigeration system to maintain continuous refrigeration to increase the space utilization of the aircraft.

[0005] A refrigerated transport device, comprising:

[0006] Energy storage structure;

[0007] A refrigeration system, the refrigeration system comprising a compressor, a condenser, an evaporator, a condensing fan and an evaporating fan constituting a refrigerant refrigeration cycle, the condensing fan being capable of driving an airflow through the condenser, and the evaporating fan being capable of driving an airflow through the evaporator;

[0008] At least one of the compressor, the condensing fan and the evaporating fan is transmission-connected to the energy storage structure via a clutch structure.

[0009] The energy storage structure comprises a gas energy storage tank and a pneumatic motor. The gas outlet of the gas energy storage tank is connected to the inlet of the pneumatic motor, and the pneumatic motor is transmission-connected to the clutch structure.

[0010] The opening degree of the gas outlet is adjustable.

[0011] The gas energy storage tank is provided with a gas inlet, through which gas can enter the gas energy storage tank; and / or the gas energy storage tank is provided with a pressure relief valve.

[0012] The refrigerated transport device is applied to aircraft, and the gas energy storage tank is formed by bending or welding a high-strength alloy steel plate.

[0013] The speed range of the pneumatic motor is 200 r / min to 4500 r / min.

[0014] The gas energy storage tank is filled with nitrogen.

[0015] The refrigerated transport device also includes a power supply structure, which can be driven and connected to the compressor and / or the condensing fan and / or the evaporating fan through the clutch structure, and when the refrigerated transport device is moved, the energy storage structure supplies energy to the refrigeration system through the clutch structure, and when the refrigerated transport device stops moving, the power supply structure supplies energy to the refrigeration system through the clutch structure.

[0016] The clutch structure includes an electromagnetic clutch.

[0017] The refrigerated transport device also includes a container, which is provided with an external interface. The energy storage structure and the refrigeration system are both arranged in the container, and the energy storage structure and the refrigeration system are connected to the outside of the container through the external interface.

[0018] The refrigerated transport device provided by the utility model utilizes an energy storage structure to store compressed fluid (such as compressed liquid nitrogen) for energy storage, and then realizes a controllable connection with the working parts in the refrigeration system through a clutch structure to ensure the reliability and stability of the refrigeration system. For refrigerated transport devices and dry ice of the same size, the energy storage structure can achieve a longer period of cold supply, effectively avoiding the problem of large space occupation caused by using dry ice as a cold source in the prior art, and improving the transportation efficiency of aircraft. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the structure of a refrigerated transport device provided in an embodiment of the utility model;

[0020] Figure 2 Another schematic diagram of the structure of the refrigerated transport device provided by the embodiment of the utility model;

[0021] Figure 3 A schematic diagram of the structure of a gas energy storage tank for a refrigerated transport device provided in an embodiment of the utility model;

[0022] In the figure:

[0023] 1. Energy storage structure; 21. Compressor; 22. Condenser; 23. Evaporator; 3. Clutch structure; 24. Condensing fan; 25. Evaporating fan; 11. Gas energy storage tank; 12. Pneumatic motor; 111. Gas outlet; 112. Gas inlet; 4. Power supply structure. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0025] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0026] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged where appropriate, so as to describe the embodiments of the present invention described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0027] It should be noted that in the description of the present invention, the terms "upper", "lower", "left", "right", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0028] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "setting", and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, an indirect connection through an intermediate medium, or the internal connection of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] Air transport is also known as aircraft transport, or "air transport" for short. It is a mode of transport that uses aircraft as a means of transport to transport goods under the conditions of air routes and airports. In my country's transportation industry, the proportion of air transport's cargo volume in the national transportation volume is still relatively small, and it mainly undertakes long-distance passenger transport tasks. With the rapid development of logistics, air transport will also play an important role in cargo transportation. Some goods require refrigeration for air transportation. Due to the particularity of air transportation, the refrigeration work generally cannot use the aircraft's electrical system or hydraulic system. If the aircraft's own electrical system or hydraulic system is used to provide refrigeration energy, if the refrigeration system fails, it will affect the aircraft's navigation safety to a certain extent. At present, dry ice sublimation refrigeration is often used for air cold chain transportation of goods. Although this method can provide sufficient cooling capacity, excessive use of dry ice refrigeration will accelerate the greenhouse effect to a certain extent and affect the atmospheric environment. At the same time, in order to ensure the refrigeration effect, a large amount of dry ice needs to be used, which will cause the aircraft's cargo volume to be reduced, seriously affecting the efficiency of air transportation. To this end, the present application provides a method such as Figures 1 to 3 The refrigerated transport device shown includes: an energy storage structure 1; a refrigeration system, wherein the refrigeration system includes a compressor 21, a condenser 22, and an evaporator 23 constituting a refrigerant refrigeration cycle, and the energy storage structure 1 is connected to the compressor 21 via a clutch structure 3. The energy storage structure 1 is used to store compressed fluid (such as compressed liquid nitrogen) for energy storage, and then a controllable connection with the working parts in the refrigeration system is achieved through the clutch structure 3 to ensure the reliability and stability of the refrigeration system. For refrigerated transport devices and dry ice of the same size, the energy storage structure 1 can achieve a longer period of cold supply, effectively avoiding the problem of large space occupation caused by using dry ice as a cold source in the prior art, thereby improving the transportation efficiency of aircraft.

[0030] When the refrigerated transport device is required to refrigerate, the energy storage structure 1 releases its stored energy, thereby driving the compressor 21 in the refrigeration system to work, and the compressor 21 can compress and drive the refrigerant in the refrigerant refrigeration cycle, and make the refrigerant pass through the condenser 22 and the evaporator 23 in sequence to achieve the purpose of refrigerating the items to be transported. Among them, a throttling structure is also provided between the condenser 22 and the evaporator 23 to throttle the refrigerant to ensure the working reliability of the refrigeration system.

[0031] Furthermore, the refrigeration system also includes a condensing fan 24, which can drive the airflow through the condenser 22. The energy storage structure 1 is connected to the condensing fan 24 through a clutch structure 3. The condensing fan 24 drives the airflow to improve the heat exchange efficiency of the condenser 22, thereby improving the heat dissipation efficiency of the condenser 22 to the refrigerant, and then improving the heat absorption capacity of the refrigerant in the evaporator 23, thereby improving the refrigeration capacity. At this time, the energy released by the energy storage structure 1 is not only supplied to the compressor 21 for work, but can also be transmitted to the condensing fan 24 through the clutch structure 3 to drive the condensing fan 24 to rotate.

[0032] The clutch structure 3 between the energy storage structure 1 and the compressor 21 and the clutch structure 3 between the energy storage structure 1 and the condensing fan 24 can be the same clutch structure 3, or two separately arranged clutch structures 3. When there are two separately arranged clutch structures 3, the working state of the condensing fan 24 can be switched as needed, and under the premise of ensuring the refrigeration effect, the ineffective work of the energy storage structure 1 releasing capacity is reduced, and the refrigeration efficiency of the refrigerated transport device is effectively improved.

[0033] Similarly, the refrigeration system also includes an evaporating fan 25, which can drive the airflow through the evaporator 23. The energy storage structure 1 is connected to the evaporating fan 25 through a clutch structure 3. The evaporating fan 25 drives the airflow to improve the heat exchange efficiency of the evaporator 23, thereby improving the heat absorption capacity of the refrigerant in the evaporator 23 and improving the refrigeration capacity. At this time, the energy released by the energy storage structure 1 is not only supplied to the compressor 21 for work, but can also be transmitted to the evaporating fan 25 through the clutch structure 3 to drive the evaporating fan 25 to rotate.

[0034] The clutch structure 3 between the energy storage structure 1 and the compressor 21 and the clutch structure 3 between the energy storage structure 1 and the evaporating fan 25 can be the same clutch structure 3, or two separately arranged clutch structures 3. When there are two separately arranged clutch structures 3, the working state of the evaporating fan 25 can be switched as needed, and under the premise of ensuring the refrigeration effect, the ineffective work of the energy storage structure 1 releasing capacity is reduced, and the refrigeration efficiency of the refrigerated transport device is effectively improved.

[0035] As an embodiment, the energy storage structure 1 includes a gas energy storage tank 11 and a pneumatic motor 12, wherein the gas outlet 111 of the gas energy storage tank 11 is connected to the inlet of the pneumatic motor 12, and the pneumatic motor 12 is transmission-connected to the clutch structure 3. When mechanical energy needs to be stored, the gas outlet 111 is opened to allow the compressed gas to flow to the pneumatic motor 12, and drive the pneumatic motor 12 to rotate. The opening of the gas outlet 111 is adjustable to control the amount of released air pressure so as to control the speed or torque of the pneumatic motor 12. Preferably, the gas filled in the gas energy storage tank 11 is nitrogen, and nitrogen is used as the compression medium. The volume fraction of nitrogen in the air is about 78%, the source is abundant, it is safe and easy to produce, and the chemical properties are stable.

[0036] The gas energy storage tank 11 is provided with a gas inlet 112, through which gas can enter the gas energy storage tank 11. The gas inlet 112 can be used to fill the gas energy storage tank 11 with compressed gas, which will be compressed and accumulated in the tank, thereby realizing energy accumulation and storage.

[0037] The gas energy storage tank 11 is provided with a pressure relief valve. When the gas pressure is too high, the pressure relief valve will automatically start to discharge the excess gas, thereby ensuring that the gas energy storage tank 11 will not rupture. The gas energy storage tank 11 is provided with a pressure gauge, through which the remaining gas usage in the gas energy storage tank 11 can be known. Due to the influence of the low air pressure state in aviation, when the gas energy storage tank 11 is raised from the ground to high altitude, the relative pressure of the gas on the container wall of the gas energy storage tank 11 will increase. At this time, the pressure relief valve can also release part of the gas to ensure the reliability of the refrigerated transportation device.

[0038] The refrigerated transport device is applied to aircraft. In order to be applicable to aircraft, the gas energy storage tank 11 is formed by bending or welding high-strength alloy steel plate to ensure the structural reliability of the gas energy storage tank 11. Among them, the material of the gas energy storage tank 11 is generally selected from metal or non-metal materials with light material, high strength and good rigidity. The pipes or pipelines connecting the gas energy storage tank 11 to the outside can be made of titanium alloy (with good high temperature strength and low temperature crack resistance, as well as good corrosion resistance and fatigue resistance) or other alloys to reduce the weight of the refrigeration system and increase the aviation carrying capacity.

[0039] In order to adjust the refrigeration efficiency of the refrigeration system, the energy input of the refrigeration system can be adjusted, that is, the speed and power of the pneumatic motor 12 can be adjusted, so the speed range of the pneumatic motor 12 is 200r / min to 4500r / min. When adjusting the speed and power of the pneumatic motor 12, the flow output of the gas can be controlled by adjusting the opening of the gas outlet 111, or an exhaust valve can be set at the gas outlet 111 to adjust the opening.

[0040] The pneumatic motor 12 includes a connecting rod, a crankshaft, a piston, a cylinder, a body, a gas distribution valve, etc. The compressed gas passes through the gas distribution valve and supplies gas to each cylinder in turn, thereby expanding and doing work, and driving the crankshaft to rotate through the connecting rod.

[0041] Since the refrigerated transport device is not completely in an air transport state, when the aircraft is parked on the ground or is transported between the aircraft and other locations by land transportation, the refrigerated transport device can be powered by a ground power supply (such as AC power) because there are no safety restrictions on the aircraft. To this end, the refrigerated transport device also includes a power supply structure 4, which can be driven and connected to the compressor 21 and / or the condensing fan 24 and / or the evaporating fan 25 through the clutch structure 3, and when the refrigerated transport device is moved, the energy storage structure 1 supplies energy to the refrigeration system through the clutch structure 3, and when the refrigerated transport device stops moving, the power supply structure 4 supplies energy to the refrigeration system through the clutch structure 3.

[0042] The clutch structure 3 includes an electromagnetic clutch. The electromagnetic clutch can switch the mechanical transmission of different drive sources through electromagnetic action. The mechanical transmission in the system can adopt gear transmission, taking into account the working environment such as aviation low pressure and low temperature. The transmission gear can adopt light, high-strength, and wear-resistant alloy steel to transmit mechanical energy to the condensing fan 24, the evaporating fan 25, and the compressor 21.

[0043] The piston shaft of the compressor 21 is connected to the gear shaft of the electromagnetic clutch through a mechanical connecting rod, and rotates with the electromagnetic clutch. The operating frequency of the compressor 21 is controlled by adjusting the opening of the gas outlet 111 or adjusting the control voltage of the power supply structure 4.

[0044] The condensing fan 24 and the evaporating fan 25 both adopt a structure in which the rotating shaft drives the fan blades to rotate and discharge air during operation, thereby improving the refrigeration capacity. The fan blades can be made of a lightweight carbon fiber material with strong stability. The carbon fiber material has properties such as light weight, high strength, and temperature resistance, making the refrigeration device further suitable for the aerospace field.

[0045] In order to make the structure of the refrigerated transport device regular and convenient for transshipment and loading and unloading, the refrigerated transport device also includes a container, and the container is provided with an external interface, the energy storage structure 1 and the refrigeration system are both arranged in the container, and the energy storage structure 1 and the refrigeration system are connected to the outside of the container through the external interface. The interior of the container can be divided into at least two spaces, one of which is used to set the energy storage structure 1 and the refrigeration system, and the other space can be used to place items to be transported.

[0046] Among them, the external interface may include a charging port, a power supply port, an exhaust grille, an inspection window, and an environmental interaction window, etc. The charging port is used to fill gas into the gas energy storage tank 11, the power supply port is used to connect the power supply structure 4 with an external power source, the exhaust grille is used to release and discharge the gas after the gas drives the pneumatic motor 12 to work, and the inspection window is used to observe the energy storage structure 1, the refrigeration system, and the items to be transported. Preferably, a temperature detection structure is also provided in the space for placing the items to be transported, and the temperature detection structure is electrically connected to the energy storage structure 1, the refrigeration system and / or the power supply structure 4, and the temperature detection structure is used to adjust the refrigeration capacity of the refrigerated transport device to ensure refrigeration reliability.

[0047] The above-mentioned embodiments only express several implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A refrigerated transport device, characterized in that: include: Energy storage structure (1); A refrigeration system, the refrigeration system comprising a compressor (21), a condenser (22), an evaporator (23), a condensing fan (24) and an evaporating fan (25) constituting a refrigerant refrigeration cycle, the condensing fan (24) being capable of driving an airflow through the condenser (22), and the evaporating fan (25) being capable of driving an airflow through the evaporator (23); At least one of the compressor (21), the condensing fan (24) and the evaporating fan (25) is transmission-connected to the energy storage structure (1) via a clutch structure (3).

2. The refrigerated transport device according to claim 1, characterized in that: The energy storage structure (1) comprises a gas energy storage tank (11) and a pneumatic motor (12); a gas outlet (111) of the gas energy storage tank (11) is connected to an inlet of the pneumatic motor (12); and the pneumatic motor (12) is transmission-connected to the clutch structure (3).

3. The refrigerated transport device according to claim 2, characterized in that: The opening degree of the gas outlet (111) is adjustable.

4. The refrigerated transport device according to claim 2, characterized in that: The gas energy storage tank (11) is provided with a gas inlet (112), and gas can enter the gas energy storage tank (11) through the gas inlet (112); and / or the gas energy storage tank (11) is provided with a pressure relief valve.

5. The refrigerated transport device according to claim 2, characterized in that: The refrigerated transport device is applied to an aircraft, and the gas energy storage tank (11) is formed by bending or welding a high-strength alloy steel plate.

6. The refrigerated transport device according to claim 2, characterized in that: The rotation speed of the pneumatic motor (12) ranges from 200 r / min to 4500 r / min.

7. The refrigerated transport device according to claim 2, characterized in that: The gas energy storage tank (11) is filled with nitrogen.

8. The refrigerated transport device according to claim 1, characterized in that: The refrigerated transport device also includes a power supply structure (4), which can be connected to the compressor (21) and / or the condensing fan (24) and / or the evaporating fan (25) through the clutch structure (3), and when the refrigerated transport device is moved, the energy storage structure (1) supplies energy to the refrigeration system through the clutch structure (3), and when the refrigerated transport device stops moving, the power supply structure (4) supplies energy to the refrigeration system through the clutch structure (3).

9. The refrigerated transport device according to any one of claims 1 to 8, characterized in that: The clutch structure (3) comprises an electromagnetic clutch.

10. The refrigerated transport device according to any one of claims 1 to 8, characterized in that: The refrigerated transport device also includes a container, on which an external interface is provided, the energy storage structure (1) and the refrigeration system are both arranged in the container, and the energy storage structure (1) and the refrigeration system are connected to the outside of the container via the external interface.

Images