CN215638188U

CN215638188U - Multi-mode phase-change cold-charging energy-saving temperature control device for thermal insulation container

Info

Publication number: CN215638188U
Application number: CN202122306607.0U
Authority: CN
Inventors: 明春梅
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-09-23
Filing date: 2021-09-23
Publication date: 2022-01-25
Anticipated expiration: 2031-09-23

Abstract

The utility model discloses a multi-mode phase-change cold-charging energy-saving temperature control device for a heat-preservation container.A hollow cavity is arranged in a container body, and a vehicle-mounted fuel engine and a vehicle-mounted motor which are used as power sources respectively drive a refrigerator to work to generate refrigeration; the refrigerator is introduced into the first heat exchange device through a first pipeline, and the first heat exchange device is connected with the phase change cold accumulation module through a second pipeline; and a second heat exchange device is arranged in the cavity of the container body, one end of the second heat exchange device is connected with the phase change cold accumulation module through a third pipeline, a fourth pipeline at the other end of the second heat exchange device is connected with the refrigerator, and a circulation loop of refrigerant and secondary refrigerant is respectively formed between the second heat exchange device and the refrigerator and between the second heat exchange device and the phase change cold accumulation module. The utility model adopts the vehicle-mounted fuel engine and the vehicle-mounted motor as power sources respectively, thereby greatly reducing the energy consumption and the cost of refrigeration transportation; the use and pollution of fuel oil are reduced, and the cleaning and environmental protection are realized; has multiple working modes, excellent heat exchange and refrigeration effects and high constant temperature precision.

Description

Multi-mode phase-change cold-charging energy-saving temperature control device for thermal insulation container

Technical Field

The utility model relates to a temperature control structure of a thermal insulation container, in particular to a multi-mode phase change cold charging energy-saving temperature control device of the thermal insulation container.

Background

The heat-insulating container is a main device of cold chain logistics, and is a container with a good heat-insulating layer on a box body, and on the basis, the container is provided with a refrigerating unit consisting of a refrigerator, an evaporator, a power source and the like and can also be called a cold-insulating container, so that the container can be actively cooled and controlled in temperature, and transportation of goods needing cold storage and heat insulation is borne, namely the main device of cold chain logistics. Refrigerated freight is generally classified into the following categories according to the temperature control in the refrigerator:

(1) preservation: such as fresh vegetables, fresh flowers, fruits, fresh-keeping vaccines, fresh and live aquatic products, fresh milk, wines and electronic components, the temperature is generally required to be 2-8 ℃;

(2) cold and fresh goods: such as acid-discharging meat products, river seafood products, bean products, vaccine products, medical waste ready-to-transport, chocolate and the like. The temperature requirement is generally 0 ℃ to-5 ℃;

(3) freezing products: such as quick-frozen food, quick-frozen seafood fresh products, frozen meat products and the like, the temperature is generally required to be-10 ℃ to-18 ℃;

(4) deep freezing of the article: such as high-grade ice cream, high-risk products and high-grade bread viable bacteria yeast dough, the temperature requirement is generally-20 ℃ to-45 ℃.

In the prior art, the heat preservation container with the refrigeration function mainly adopts two power sources to drive the refrigerator to work to generate cold energy so as to realize temperature reduction and temperature control in the container.

The first mode is that a vehicle-mounted fuel engine (which can be a heat preservation container with a diesel/gasoline engine, can also take power from a fuel engine of a transport vehicle, and is called as a vehicle-mounted fuel engine) works to drive a refrigerator, or the fuel engine drives the container with a generator to generate electric energy to drive the refrigerator; the refrigerating machine works to cool the refrigerant to a set low temperature, and the refrigerant is connected with the heat exchange device (the device can be in the forms of an evaporator, a fan coil or a radiation cold plate) in the container through a pipeline, and the refrigeration is circulated between the refrigerating machine and the heat exchange device 1 in the container in a reciprocating way to continuously release the refrigeration to the container.

In the second mode, an electric motor (called as a vehicle-mounted electric motor) is additionally arranged on the heat-insulating container, and public power supply networks such as municipal power supply or industrial power supply are accessed under the condition permission state. The vehicle-mounted motor takes electricity from a power supply network to drive the refrigerator, the refrigerator does work to cool the refrigerant to a set low temperature, the refrigerant is connected with the heat exchange device in the box (the device can be in the forms of an evaporator, a fan coil or a radiation cold plate) through a pipeline, and the refrigerant is circulated between the refrigerator and the heat exchange device 1 in the box in a reciprocating way to continuously release cold energy into the container.

However, in the first mode, the vehicle-mounted fuel oil is used as the energy source of the vehicle-mounted engine, so that the oil consumption is high, the energy efficiency is low, and the logistics cost is high. In the second mode, the power supply of a public power supply network is adopted as the energy source of the motor, the power is intensively generated and supplied in a high power mode, the energy efficiency is obviously improved, the cleaning and the environmental protection are realized, and the logistics cost is reduced. However, the second mode needs to be used under the conditions of parking, commercial power and access to the commercial power, and meanwhile, the parking in a goods-free state is not available, so that the service time is severely limited, and the utilization rate is too low.

Disclosure of Invention

Aiming at the defects in the prior art, the utility model provides the heat-preservation container multi-mode phase-change cold-charging energy-saving temperature control device which can use a fuel engine as a power source during driving, use a power supply network as a refrigeration power source during loading goods and parking and drive a refrigerator to generate cold energy, so that the energy consumption and the cost of container refrigeration transportation can be greatly reduced.

The technical scheme of the utility model is as follows: the multi-mode phase-change cold-charging energy-saving temperature control device for the thermal insulation container comprises a container body, wherein a hollow cavity is arranged inside the container body, and the device is characterized in that: the vehicle-mounted fuel engine and the vehicle-mounted motor are respectively used as power sources and respectively drive the refrigerator to work to generate refrigeration; a refrigerant of the refrigerator is introduced into a first heat exchange device through a first pipeline, the first heat exchange device is connected with a phase change cold accumulation module through a second pipeline, and a secondary refrigerant of the phase change cold accumulation module and the refrigerant of the refrigerator exchange heat in the first heat exchange device;

a second heat exchange device is arranged in a hollow cavity of the container body, one end of the second heat exchange device is connected with the phase change cold accumulation module through a third pipeline, a fourth pipeline at the other end of the second heat exchange device is connected with the refrigerator, a refrigerant and a refrigerating medium circulation loop are respectively formed between the second heat exchange device and the refrigerator and between the second heat exchange device and the phase change cold accumulation module, and the refrigerating medium of the phase change cold accumulation module and the refrigerant of the refrigerator exchange heat in the second heat exchange device.

Further features are: a third heat exchange device is also arranged in a hollow cavity of the container body; first, the

And the three heat exchange devices are connected with the phase change cold accumulation module through a fifth pipeline to form a secondary refrigerant circulation loop.

Further features are: the control device is used for respectively controlling the on-board motor and the refrigerating machine of the on-board fuel engine to be turned on or turned off.

Further features are: and control valves are arranged on the first pipeline, the second pipeline, the third pipeline and the fourth pipeline and are opened or closed under a controlled state.

Further features are: the vehicle-mounted motor and the refrigerator of the vehicle-mounted fuel engine are arranged outside the cavity of the container body.

Further features are: the phase change cold accumulation module is arranged in the cavity of the container body or on the outer surface of the container body.

Further features are: the third heat exchange device and the second heat exchange device are arranged in a staggered mode in a hollow cavity of the container body and are respectively arranged on two opposite side faces of the container body, one is close to the outer side, and the other is close to the inner side.

Compared with the prior art, the multi-mode phase change cold charge and energy-saving temperature control device for the heat preservation container has the following characteristics:

1. the container is provided with a fuel engine as a power source, and the fuel engine drives a refrigerating device to generate refrigeration effect when the container is driven, so that the temperature of the inner space of the container is reduced.

2. When goods are loaded and parked, or places with commercial power such as a highway service area and the like are communicated with a commercial power grid, the commercial power is used as a refrigeration power source to drive a refrigerator to generate cold, and the temperature of the inner space of the container is reduced.

3. The container is provided with a fuel engine as a power source, and can also adopt commercial power as a refrigeration power source to drive a refrigerator to generate cold, thereby greatly reducing the energy consumption and the cost of refrigeration transportation.

4. Because the utility power is adopted as a refrigeration power source, the use and pollution of fuel oil are reduced, and the refrigeration system is cleaner and more environment-friendly.

5. The cold accumulation energy-saving temperature control device mainly comprises a vehicle-mounted fuel engine (or a vehicle-mounted generator can be additionally mounted), a vehicle-mounted motor, a refrigerator, more than one heat exchange device, a phase change cold accumulation module, a refrigerant, a secondary refrigerant, a plurality of pipeline systems, a control system and the like, has multiple working modes, forms excellent heat exchange and refrigeration effects, enables the temperature of the inner space of the container to meet the requirements of refrigeration and fresh-keeping transportation, and has high constant temperature precision.

Drawings

FIG. 1 is a schematic view of the structure of the temperature control device of the present invention.

Detailed Description

The utility model relates to a multi-mode phase-change cold-charging energy-saving temperature control device of a heat-preservation container, which comprises a container body 1, wherein the container body 1 is of a three-dimensional structure, usually a cuboid structure, a hollow cavity is arranged inside the container body for loading goods, and the container body 1 meets the requirements of strength, rigidity, geometric dimension, heat-preservation performance and the like.

The vehicle-mounted fuel engine 2 and the vehicle-mounted motor 3 are respectively used as power sources to drive the refrigerator 4 to work to generate refrigeration; the vehicle-mounted fuel engine 2 is driven by vehicle-mounted fuel by using fuel (diesel or gasoline) of a vehicle as power; the vehicle-mounted motor 3 is driven by mains supply.

The refrigerator 4 is connected with the first heat exchange device 6 through a first pipeline 5, and a refrigerant of the refrigerator 4 is introduced into the first heat exchange device 6 through the first pipeline 5 to form a refrigerant circulation loop; the first heat exchange device 6 is connected with the phase change cold accumulation module 8 through a second pipeline 7 to form a secondary refrigerant circulation loop; the secondary refrigerant of the phase change cold accumulation module 8 and the refrigerant of the refrigerator 4 exchange heat in the first heat exchange device 6.

A second heat exchange device 9 is arranged in a hollow cavity of the container body 1, one end of the second heat exchange device 9 is connected with the phase change cold accumulation module 8 through a third pipeline 11, and the other end of the second heat exchange device is connected with the refrigerator 4 through a fourth pipeline 12; refrigerant and secondary refrigerant circulation loops are respectively formed among the second heat exchange device 9, the refrigerator 4 and the phase change cold storage module 8, and the secondary refrigerant of the phase change cold storage module 8 and the refrigerant of the refrigerator 4 exchange heat in the second heat exchange device 9. The refrigerant of the refrigerator 4 is introduced into the second heat exchange device 9 through the fourth pipeline 12, and exchanges heat with the air in the hollow cavity of the container body 1.

The container body 1 is also provided with a third heat exchange device 10 in a hollow cavity, the third heat exchange device 10 is connected with the phase change cold accumulation module 8 through a fifth pipeline 13 to form a secondary refrigerant circulation loop, and the secondary refrigerant and the gas of the container body 1 form low temperature after heat exchange in the third heat exchange device 10, so that the temperature in the hollow cavity of the container body 1 is reduced. The third heat exchange device 10 and the second heat exchange device 9 can be arranged in a staggered manner in the hollow cavity of the container body 1, namely, the third heat exchange device and the second heat exchange device are respectively arranged on two opposite side surfaces of the container body 1, and one heat exchange device is close to the outer side (close to the door) and the other heat exchange device is close to the inner side, so that the uniformity of the temperature in the cavity of the container body 1 can be improved, and the refrigeration effect is correspondingly improved.

Also comprises a control device which respectively controls the vehicle-mounted fuel engine 2, the vehicle-mounted motor 3 and the refrigerator 4,

and the switch is opened or closed under a controlled state, and the generation actions of the switch are respectively controlled.

The first pipeline 5, the second pipeline 7, the third pipeline 11 and the fourth pipeline 12 are provided with a controller

The valve is opened or closed under the controlled state to generate a plurality of working modes and meet the requirements of cold charging, refrigeration and heat exchange.

The vehicle-mounted fuel engine 2, the vehicle-mounted motor 3 and the refrigerator 4 are arranged in the cavity of the container body 1

And the outer part does not occupy the inner cavity of the container body 1, thereby increasing the volume of the loaded goods.

The phase change cold accumulation module 8 is arranged in the cavity of the container body 1 or on the outer surface of the container body 1 and is arranged according to actual needs.

The energy storage temperature control principle of the utility model is as follows:

the first mode is as follows: adopt the power supply network (commercial power, industrial electricity or generator electricity generation) to refrigerate as the power supply under the transportation goods state, for in the container and phase change cold-storage module cooling, realize temperature control and phase change material cold-storage in the case:

when the vehicle is parked (in a service area, a parking lot or a refrigeration house and the like), the power supply network is connected, the vehicle-mounted motor 3 takes power from the power supply network to drive the refrigerator 4, and the refrigerator works. Three conditions can be created:

working condition 1: parallel refrigeration and cold accumulation:

part of the refrigerant of the refrigerator 4 is connected with the second heat exchange device 9 through a fourth pipeline 12 to form a circulation loop, and the refrigerant exchanges heat with air in the refrigerator through the second heat exchange device 9 to refrigerate the refrigerator; meanwhile, part of the refrigerant of the refrigerator 4 is connected with the first heat exchange device 6 through the first pipeline 5 to form a circulation loop, the first heat exchange device 6 is connected with the secondary refrigerant in the phase change cold storage module 8 through the second pipeline 7 to form a circulation loop, and heat exchange is formed in the phase change cold storage module 8. The refrigerant carries out heat exchange with the secondary refrigerant through the first heat exchange device 6, and then the secondary refrigerant carries out heat exchange with the phase-change material in the secondary refrigerant through the phase-change cold storage module 8 to refrigerate the phase-change material.

Working condition 2: serial refrigeration + cold accumulation:

the refrigerant of the refrigerator 4 is connected with the first heat exchange device 6 through the first pipeline 5 to form a circulation loop, and exchanges heat with the secondary refrigerant, then the secondary refrigerant in the first heat exchange device 6 is connected with the phase change cold accumulation module 8 through the second pipeline 7, the phase change cold accumulation module 8 is connected with the second heat exchange device 9 through the third pipeline 11, and is connected with the third heat exchange device 10 through the fifth pipeline 13 to respectively form a circulation loop for exchanging heat. The refrigerant of the refrigerator 4 exchanges heat with the secondary refrigerant through the first heat exchange device 6, then the secondary refrigerant exchanges heat with the phase-change material in the secondary refrigerant through the phase-change cold storage module 8, and the phase-change material is refrigerated and then exchanges heat with the air in the container through the second heat exchange device 9 or the third heat exchange device 10 through the third pipeline 11 or the fifth pipeline 13 to refrigerate the container.

Working condition 3: refrigerating by the combination of the refrigerating machine and the phase change cold accumulation module:

the refrigerant of the refrigerator 4 is connected with the second heat exchange device 9 through a fourth pipeline 12 to form a circulation loop, and the refrigerant exchanges heat with the air in the container through the second heat exchange device 9 to refrigerate the container. Meanwhile, the secondary refrigerant in the phase change cold accumulation module 8 is connected with the third heat exchange device 10 through the fifth pipeline 13 to form a circulation loop. The secondary refrigerant exchanges heat with the air in the container through the third heat exchange device 10 to carry out combined refrigeration in the container.

And a second mode: adopt on-vehicle fuel engine 2 to refrigerate under the transportation goods state, for cooling in the container, realize temperature control in the case:

under the condition that the vehicle runs or can not be connected with a power supply network, the vehicle-mounted fuel engine 2 operates to drive the refrigerator 4, and the refrigerator 4 works. The refrigerant is connected with the second heat exchange device 9 through a fourth pipeline 12 to form a circulation loop, and the refrigerant exchanges heat with air in the container through the second heat exchange device 9 to refrigerate the container.

And a third mode: and the power supply network is adopted as a power source to refrigerate in the state of not transporting goods, and the phase change cold accumulation module 8 is supplied with cold, so that the phase change material is used for accumulating cold.

When the vehicle is parked (service area, parking lot or refrigeration house, etc.), the power supply network is connected, the vehicle-mounted motor 3 takes power from the power supply network to drive the refrigerator 4, and the refrigerator 4 works. The refrigerant is connected with the first heat exchange device 6 through the first pipeline 5 to form a circulation loop, and the secondary refrigerant in the first heat exchange device 6 is connected with the phase change cold accumulation module 8 through the second pipeline 7 to form the circulation loop. The refrigerant carries out heat exchange with the secondary refrigerant through the first heat exchange device 6, and then the secondary refrigerant carries out heat exchange with the phase-change material through the phase-change cold storage module 8 to refrigerate the phase-change material.

And a fourth mode: adopt phase transition cold-storage module to supply cold for in the container completely under the transportation goods state, realize temperature control in the case:

the secondary refrigerant in the phase change cold accumulation module 8 is connected with the second heat exchange device 9 through a third pipeline 11 to form a circulation loop, or is connected with the third heat exchange device 10 through a fifth pipeline 13 to form a circulation loop. The secondary refrigerant exchanges heat with the phase-change material in the phase-change cold storage module 8, and then exchanges heat with air in the container through the second heat exchange device 9 or the third heat exchange device 10 through the third pipeline 11 or the fifth pipeline 13 to refrigerate the container.

Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the technical solutions, and although the present invention has been described in detail by referring to the preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions to the technical solutions of the present invention can be made without departing from the spirit and scope of the technical solutions, and all the modifications and equivalent substitutions should be covered by the claims of the present invention.

Claims

1. Insulated container multi-mode phase transition fills cold-storage energy-saving temperature regulating device, including container box (1), container box (1) inside is hollow cavity, its characterized in that: the refrigeration system also comprises a vehicle-mounted fuel engine (2) and a vehicle-mounted motor (3) which are respectively used as power sources and can respectively drive the refrigerator (4) to work to generate refrigeration; a refrigerant of the refrigerator (4) is introduced into the first heat exchange device (6) through the first pipeline (5), the first heat exchange device (6) is connected with the phase change cold storage module (8) through the second pipeline (7), and a secondary refrigerant of the phase change cold storage module (8) and the refrigerant of the refrigerator (4) exchange heat in the first heat exchange device (6);

a second heat exchange device (9) is arranged in a hollow cavity of a container body (1), one end of the second heat exchange device (9) is connected with a phase change cold accumulation module (8) through a third pipeline (11), the other end of the second heat exchange device is connected with a refrigerator (4) through a fourth pipeline (12), a refrigerant and a secondary refrigerant circulation loop are respectively formed between the second heat exchange device (9) and the refrigerator (4) and between the phase change cold accumulation module (8), and the secondary refrigerant of the phase change cold accumulation module (8) and the refrigerant of the refrigerator (4) exchange heat in the second heat exchange device (9).

2. The insulated container multi-mode phase-change cold-charging energy-saving temperature control device as claimed in claim 1, wherein: a third heat exchange device (10) is also arranged in a hollow cavity of the container body (1); and the third heat exchange device (10) is connected with the phase change cold accumulation module (8) through a fifth pipeline (13) to form a refrigerating medium circulation loop.

3. The insulated container multimode phase-change cold-charging energy-saving temperature control device as claimed in claim 1 or 2, characterized in that: the system also comprises a control device which respectively controls the on-board fuel engine (2), the on-board motor (3) and the refrigerator (4) to be switched on or off.

4. The multi-mode phase-change cold-charging energy-saving temperature control device for the thermal insulation container as claimed in claim 3, wherein: control valves are arranged on the first pipeline (5), the second pipeline (7), the third pipeline (11) and the fourth pipeline (12) and are opened or closed under a controlled state.

5. The insulated container multimode phase-change cold-charging energy-saving temperature control device as claimed in claim 1 or 2, characterized in that: the vehicle-mounted fuel engine (2), the vehicle-mounted motor (3) and the refrigerator (4) are arranged outside the cavity of the container body (1).

6. The multi-mode phase-change cold-charging energy-saving temperature control device for the thermal insulation container as claimed in claim 5, wherein: the phase change cold accumulation module (8) is arranged inside the cavity of the container body (1) or on the outer surface of the container body (1).

7. The multi-mode phase change cold charging and energy saving temperature control device for the thermal insulation container as claimed in claim 2, wherein: the third heat exchange device (10) and the second heat exchange device (9) are arranged in a staggered manner in the hollow cavity of the container body (1) and are respectively arranged on two opposite side surfaces of the container body (1), one is close to the outer side and the other is close to the inner side.