CN110667461B - Cold-storage constant-temperature refrigerator car - Google Patents
Cold-storage constant-temperature refrigerator car Download PDFInfo
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- CN110667461B CN110667461B CN201910964296.1A CN201910964296A CN110667461B CN 110667461 B CN110667461 B CN 110667461B CN 201910964296 A CN201910964296 A CN 201910964296A CN 110667461 B CN110667461 B CN 110667461B
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- refrigerator car
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- constant temperature
- water tank
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- 238000009825 accumulation Methods 0.000 claims abstract description 44
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 54
- 239000007788 liquid Substances 0.000 claims description 41
- 239000003507 refrigerant Substances 0.000 claims description 35
- 238000005057 refrigeration Methods 0.000 claims description 18
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 12
- 238000009413 insulation Methods 0.000 claims description 7
- 238000005192 partition Methods 0.000 claims description 7
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims description 6
- 229920002635 polyurethane Polymers 0.000 claims description 5
- 239000004814 polyurethane Substances 0.000 claims description 5
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 4
- 239000002131 composite material Substances 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 4
- 238000004321 preservation Methods 0.000 claims description 3
- 239000013589 supplement Substances 0.000 claims description 2
- 230000009977 dual effect Effects 0.000 claims 2
- 238000000034 method Methods 0.000 abstract description 11
- 229960005486 vaccine Drugs 0.000 abstract description 7
- 230000009286 beneficial effect Effects 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000001737 promoting effect Effects 0.000 abstract description 3
- 238000005070 sampling Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 239000003814 drug Substances 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000000243 photosynthetic effect Effects 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 239000004964 aerogel Substances 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 239000011490 mineral wool Substances 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60P—VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
- B60P3/00—Vehicles adapted to transport, to carry or to comprise special loads or objects
- B60P3/20—Refrigerated goods vehicles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/32—Cooling devices
- B60H1/3204—Cooling devices using compression
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/32—Cooling devices
- B60H1/3204—Cooling devices using compression
- B60H1/3222—Cooling devices using compression characterised by the compressor driving arrangements, e.g. clutches, transmissions or multiple drives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/32—Cooling devices
- B60H1/3204—Cooling devices using compression
- B60H1/3223—Cooling devices using compression characterised by the arrangement or type of the compressor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/32—Cooling devices
- B60H1/3204—Cooling devices using compression
- B60H1/3227—Cooling devices using compression characterised by the arrangement or the type of heat exchanger, e.g. condenser, evaporator
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- Power Engineering (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Transportation (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
The invention discloses a cold accumulation type constant temperature refrigerator car, which comprises a refrigerator car body (100), wherein a refrigerating system and a constant temperature control system are arranged on the refrigerator car body (100), and the cold accumulation type constant temperature refrigerator car comprises the following components: the refrigerating system is used for refrigerating a carriage of the refrigerated vehicle body (100); and the constant temperature control system is connected with the refrigerating system and is used for receiving and storing the cold energy conveyed by the refrigerating system and maintaining the temperature in the carriage of the refrigerated vehicle body (100) to be stable. The cold accumulation type constant temperature refrigerator car disclosed by the invention can ensure that the temperature in the carriage is maintained in a relatively constant temperature range, improves the safety and timeliness of cargoes such as medical vaccines in the transportation process, is beneficial to promoting the wide popularization and application of the refrigerator car, and has great production and practice significance.
Description
Technical Field
The invention relates to the technical field of refrigerated vehicles, in particular to a cold-storage type constant-temperature refrigerated vehicle.
Background
Currently, with the advent of numerous electronic commerce brands, the need for refrigerated vehicles has been growing in wells.
The refrigerator car is used as a closed van for transporting frozen or fresh goods, a refrigerating unit is arranged on the refrigerator car, and a polyurethane heat insulation van is adopted as a van body. At present, two carriages of a refrigerator car are provided, one of the carriages is a carriage provided with an ice bag or a cold accumulation plate, the refrigerator car does not independently refrigerate, and the temperature field in the carriage is uneven; secondly, the mechanical refrigeration transport vehicle with the refrigerating unit is arranged on the carriage, so that the oil consumption of the transport vehicle is increased, the cooling of the carriage cannot be continuously supplied, the temperature of the carriage cannot be maintained, and the temperature in the carriage cannot be maintained in a relatively constant temperature range. In addition, in the process of multi-point delivery and transportation of the refrigerated truck in the same city, the temperature in a carriage for placing goods is easy to fluctuate due to loading and unloading of the common transport truck, and the quality of products loaded on the refrigerated truck can be influenced.
At present, when some goods are transported by a refrigerated vehicle, the temperature in the compartment needs to be kept within a relatively constant temperature range, for example, the whole-process temperature is required to be controlled at 2-8 ℃ in the cold chain transportation process of the medical vaccine, and the control precision is +/-2 ℃ because the traditional compressor refrigerating system adopts a temperature difference control mode, so that the requirement of the medical vaccine transport vehicle is difficult to be met. If the control precision is improved, in the mode, the service life is seriously influenced by frequent start and stop of the unit, and meanwhile, the time delay exists in the refrigerating process of the unit, so that the precision is difficult to ensure.
Therefore, there is an urgent need to develop a technology that can ensure that the temperature in the cabin is maintained within a relatively constant temperature range, and improve the safety and timeliness of the goods such as medical vaccines during transportation.
Disclosure of Invention
The invention aims at providing a cold accumulation type constant temperature refrigerator car aiming at the technical defects existing in the prior art.
Therefore, the invention provides a cold accumulation type constant temperature refrigerator car, which comprises a refrigerator car body, wherein a refrigerating system and a constant temperature control system are arranged on the refrigerator car body, and the cold accumulation type constant temperature refrigerator car comprises the following components:
The refrigerating system is used for refrigerating the carriage of the refrigerated vehicle body;
The constant temperature control system is connected with the refrigerating system and used for receiving and storing the cold energy conveyed by the refrigerating system and maintaining the temperature in the carriage of the refrigerated vehicle body to be stable;
The dual-compressor hybrid refrigeration system comprises an evaporator;
the refrigerant outlet at the right end of the top of the evaporator is respectively connected with the refrigerant inlet of the electric compressor and the refrigerant inlet of the mechanical compressor;
The refrigerant outlet of the electric compressor and the refrigerant outlet of the mechanical compressor are connected with the refrigerant inlet at the top of the condenser after converging through a hollow connecting pipeline;
The refrigerant outlet at the bottom of the condenser is connected with the refrigerant inlet at the right end of the bottom of the evaporator through a throttle valve.
Wherein, the mixed refrigerating system of two compressors still includes electromagnetic clutch and engine:
And the engine is used for outputting electric energy to the mechanical compressor through the electromagnetic clutch after being started.
The double-compressor hybrid refrigeration system further comprises a solar photovoltaic panel;
The solar photovoltaic panel is positioned on the carriage surface of the refrigerated vehicle body;
the solar photovoltaic panel is electrically connected with the storage battery through the photovoltaic controller;
and the storage battery is used for storing electric energy transmitted by the solar photovoltaic panel and supplying power to the electric compressor through the inverter.
Wherein, constant temperature control system includes first water pump, cold-storage water tank, coiled pipe formula radiator, first solenoid valve, second solenoid valve and radiator, wherein:
the cold accumulation water tank is arranged in a carriage of the refrigerated vehicle body;
Glycol solution used as a secondary refrigerant is pre-stored in the cold accumulation water tank;
The first liquid outlet at the top of the cold accumulation water tank is communicated with the liquid inlet of the coiled pipe radiator through a first water pump;
The first liquid inlet at the upper part of the right side of the cold accumulation water tank is communicated with the liquid outlet of the coiled pipe radiator;
The second liquid outlet at the lower part of the right side of the cold accumulation water tank is respectively communicated with the liquid inlet of the second water pump and the liquid inlet of the radiator;
the liquid outlet of the second water pump is communicated with the liquid inlet at the left end of the top of the evaporator;
The liquid outlet at the left end of the bottom of the evaporator is communicated with the second liquid inlet at the bottom of the cold accumulation water tank through a first electromagnetic valve;
The liquid outlet of the radiator is connected with a connecting pipeline between the first electromagnetic valve and the second liquid inlet at the bottom of the cold accumulation water tank through the second electromagnetic valve.
The refrigerator car comprises a refrigerator car body, a solar photovoltaic panel, a tin foil composite layer, a polyurethane heat insulation layer, a heat preservation layer and a coil radiator, wherein the compartment of the refrigerator car body is sequentially provided from outside to inside.
Wherein, the carriage of the refrigerated truck body comprises a hollow refrigerating chamber and a unloading chamber;
A door curtain or a partition plate is arranged between the refrigerating chamber and the unloading chamber;
the partition board is provided with a sealing door which can be opened and closed.
Compared with the prior art, the cold accumulation type constant temperature refrigerator car provided by the invention can ensure that the temperature in the carriage is maintained in a relatively constant temperature range, improves the safety and timeliness of cargoes such as medical vaccine in the transportation process, is beneficial to promoting the wide popularization and application of the refrigerator car, and has great production and practice significance.
Drawings
FIG. 1 is a schematic diagram of the working principle of a cold accumulation type constant temperature refrigerator car provided by the invention;
FIG. 2 is a block diagram of a compartment structure of an embodiment of a cold storage type constant temperature refrigerated vehicle according to the present invention;
In the figure, 1, a first water pump, 2, a cold storage water tank (glycol secondary refrigerant), 3, a first electromagnetic valve, 4, a coil radiator, 5 and a second water pump;
6. the second electromagnetic valve, 7, the radiator, 8, the evaporator, 9, the electric compressor, 10, the mechanical compressor;
11. An inverter 12, a storage battery 13, a photovoltaic controller 15 and a throttle valve;
16. A condenser 17, an electromagnetic clutch 18, an engine 14, a solar photovoltaic panel 20 and a tin foil composite layer;
21. Polyurethane heat insulation layer 22, heat preservation layer 24 and door curtain;
100. a refrigerated vehicle body.
Detailed Description
In order to better understand the aspects of the present invention, the present invention will be described in further detail with reference to the drawings and embodiments.
Referring to fig. 1 and 2, the invention provides a cold accumulation type constant temperature refrigerated vehicle which is suitable for long-distance transportation, has a cold accumulation water tank which continuously circulates, and can ensure that the temperature in a carriage is maintained in a relatively constant temperature range by fully utilizing the solar drive refrigeration device in the transportation process and the traditional mechanical refrigeration combined action.
The invention provides a cold accumulation type constant temperature refrigerator car, which specifically comprises a refrigerator car body 100, wherein a refrigerating system and a constant temperature control system are arranged on the refrigerator car body 100, and the cold accumulation type constant temperature refrigerator car comprises the following components:
A refrigerating system for refrigerating the compartment of the refrigerated vehicle body 100;
and the constant temperature control system is connected with the refrigerating system and is used for receiving and storing the cold energy conveyed by the refrigerating system and maintaining the temperature in the carriage of the refrigerated vehicle body 100 to be stable.
In the present invention, the compartment of the refrigerated truck body 100 comprises a hollow refrigerated compartment 101 and a discharge compartment 102;
a door curtain 24 or a partition plate is arranged between the refrigerating chamber 101 and the unloading chamber 102;
The partition panel is provided with a openable sealing door (the sealing door can be installed on the partition panel in a conventional hinge installation mode).
The right side of the unloading chamber 102 has a openable door to facilitate loading and unloading of the cargo.
In the invention, a double-compressor mixed refrigerating system comprises an evaporator 8;
a refrigerant outlet at the right end of the top of the evaporator 8 is respectively connected with a refrigerant inlet of the electric compressor 9 and a refrigerant inlet of the mechanical compressor 10 (through a hollow connecting pipeline);
the refrigerant outlet of the electric compressor 9 and the refrigerant outlet of the mechanical compressor 10 are converged by the hollow connecting pipe and then connected with the refrigerant inlet at the top of the condenser 16 (by the hollow connecting pipe);
The refrigerant outlet at the bottom of the condenser 16 is connected (via a hollow connecting pipe) to the refrigerant inlet at the right end of the bottom of the evaporator 8 via a throttle valve 15.
The refrigerant outlet of the evaporator 8 and the refrigerant inlet are connected through a built-in heat exchange coil.
In particular, to provide working electricity for the dual-compressor hybrid refrigeration system, the dual-compressor hybrid refrigeration system further includes an electromagnetic clutch 17 and an engine 18:
The engine 18 outputs electric power to the mechanical compressor 10 through the electromagnetic clutch 17 after starting.
In particular, in order to fully utilize the solar energy irradiated by the refrigerator car during transportation, the dual-compressor hybrid refrigeration system further comprises a solar photovoltaic panel 14;
a solar photovoltaic panel 14 located on a cabin surface of the refrigerator car body 100;
The solar photovoltaic panel 14 is electrically connected with the storage battery 12 through the photovoltaic controller 13 (specifically through a connecting wire);
The storage battery 12 is used for storing electric energy transmitted by the solar photovoltaic panel 14 and supplying power to the electric compressor 9 through the inverter 11 (specifically through a connecting wire).
The implementation is last, and constant temperature control system includes first water pump 1, cold-storage water tank 2, coiled radiator 4, first solenoid valve 3, second solenoid valve 6 and radiator 7, wherein:
the cold storage water tank 2 is placed in the cabin of the refrigerator car body 100 (specifically in the refrigerator compartment 101);
glycol solution as a secondary refrigerant is stored in the cold accumulation water tank 2 in advance;
the first liquid outlet at the top of the cold accumulation water tank 2 is communicated with the liquid inlet of the coil radiator 4 through the first water pump 1;
a first liquid inlet at the upper right side of the cold accumulation water tank 2 is communicated with a liquid outlet of the coil radiator 4 (through a hollow connecting pipeline);
the second liquid outlet at the lower part of the right side of the cold accumulation water tank 2 is respectively communicated with the liquid inlet of the second water pump 5 and the liquid inlet of the radiator 7 (through a hollow connecting pipeline);
the liquid outlet of the second water pump 5 is communicated with the liquid inlet at the left end of the top of the evaporator 8 (through a hollow connecting pipeline);
The liquid outlet at the left end of the bottom of the evaporator 8 is communicated with the second liquid inlet at the bottom of the cold accumulation water tank 2 through the first electromagnetic valve 3 (through a hollow connecting pipeline);
the liquid outlet of the radiator 7 is connected with a connecting pipeline between the first electromagnetic valve 3 and the second liquid inlet at the bottom of the cold accumulation water tank 2 through the second electromagnetic valve 6.
In the present invention, the solar photovoltaic panel 14, the tin foil composite layer 20, the polyurethane heat insulation layer 21, the heat insulation layer 22 and the coil radiator 4 are sequentially arranged in the compartment of the refrigerated vehicle body 100 from outside to inside. A coil radiator 4 for maintaining the temperature in the refrigerating chamber 101 stable.
In particular, the coil radiator 4 is disposed on the cabin top of the refrigerator car body 100 and on the inside of the cabin on both front and rear sides of the cabin.
In the present invention, the door curtain 24, the refrigerating chamber, and the unloading chamber are used in cooperation with each other, so that the fluctuation in the cabin temperature of the refrigerated vehicle body 100 is small, and the quality of the products such as the medical vaccine is not affected by the fluctuation in the temperature caused by the loading and unloading of the stored goods such as the medicines when the dispensing vehicle dispenses the stored goods.
In particular, the thermal insulation material used for the thermal insulation layer 22 may be selected according to practical situations, including but not limited to glass fiber, asbestos, rock wool, aerogel felt, and even vacuum panels.
In the present invention, the inverter 11 is specifically configured to achieve the purpose of direct current to alternating current, and the inverter 11 may include an existing unidirectional DC/DC converter and a dual-input DC/AC converter, and the inverter technology is a mature and well-known technology.
It should be noted that, for the power switching of the dual-compressor hybrid refrigeration system, the direct power source of the electric compressor 9 is mainly studied, both ends of the solar photovoltaic panel 14 and the storage battery 12 may be connected with voltage and current sampling circuits, the collected voltage and current signals are sent to the control unit, and an algorithm inside the control unit controls the unidirectional DC/DC converter and the switching tube in the dual-input DC/AC converter included in the inverter 11 according to the collected signals, so as to realize the switching of the following working modes.
1. The voltage and current sampling circuits at both ends of the solar photovoltaic panel 14 and the storage battery 12 send the collected voltage and current signals to the control unit, and the control unit turns off the switching tube for controlling the discharge of the storage battery in the dual-input DC/AC converter included in the inverter 11 by the output PWM signal through the operation of the internal algorithm, at this time, the solar photovoltaic panel absorbs solar energy to generate direct current, and the direct current is converted into alternating current through the dual-input DC/AC converter and then sent to the electric compressor. 2. The voltage and current sampling circuits at two ends of the solar photovoltaic panel and the storage battery send collected voltage and current signals to the control unit, the control unit outputs PWM signals to control the duty ratio of the switching tube of the double-input DC/AC converter through the operation of an internal algorithm, the output power ratio of the solar photovoltaic panel and the storage battery is adjusted, and at the moment, the photovoltaic panel and the storage battery are discharged cooperatively, so that the purpose of fully utilizing solar energy is achieved. 3. The voltage and current sampling circuit sends the collected electric signals out of the control unit, PWM signals are output through the operation of an internal algorithm, and a switching tube for controlling the discharge of the photovoltaic panel is turned off, and the storage battery independently supplies power to the electric compressor. 4. The control unit is used for controlling the unidirectional DC/DC converter to work in an MPPT (maximum power point tracking) mode after carrying out operation analysis on the voltage and current signals sent by the voltage and current sampling circuit, and the solar photovoltaic panel is used for charging the storage battery.
The control of the refrigeration system may determine whether the storage battery is powered according to the relationship between the power PPV available by the solar photovoltaic panel and the power load capacity Pload, and the SOC (remaining power) of the storage battery determines the direct power of the refrigeration system. When the solar energy is sufficient and the power provided by the solar photovoltaic panel (namely the photovoltaic array) is larger than the power required by the electric compressor, the direct power source of the electric compressor is determined according to the SOC value of the storage battery. If the SOC of the storage battery is larger than the set upper limit value, the storage battery is stopped being charged by the solar photovoltaic panel, and the solar photovoltaic panel directly supplies power to the electric compressor through the double-input DC/AC converter. If the SOC of the storage battery is smaller than the set value at the moment, the photovoltaic panel charges the storage battery in an MPPT mode through a unidirectional DC/DC converter, and the unidirectional DC/DC converter has 3 modes of BUCK, BOOST and off, so that the storage battery can be reasonably charged. When the solar energy is insufficient, namely the power provided by the photovoltaic array is smaller than the power required by the electric compressor, the beginning of the storage battery discharging circuit is determined according to the SOC value of the storage battery. If the SOC of the storage battery is larger than the set lower limit value, the storage battery is used as an auxiliary power supply to supply power together with the solar photovoltaic panel (namely, the photovoltaic array), and if the SOC of the storage battery is smaller than the set lower limit value, a discharging circuit of the storage battery is cut off, and the engine drives the mechanical compressor to work.
It should be noted that, the control unit module is an existing control module, and in practical application, a solar controller applied to a photosynthetic silicon energy storage battery and a semi-flexible solar panel produced by a long sand photosynthetic silicon energy company of Hunan may be correspondingly adopted, or a reverse control integrated inverter (on which the above structure and function of the inverter are integrated).
In the present invention, the solar photovoltaic panel 14 is used to absorb solar radiation and convert it into electrical energy through the photovoltaic controller 13, which is then stored in the storage battery 12 for use by the refrigeration system, while the refrigerated vehicle is parked, it is cooled by means of the electric compressor 9.
The photovoltaic controller is an automatic control device used in a solar power generation system for controlling a plurality of solar cell matrixes to charge a storage battery and the storage battery to supply power to a load of a solar inverter.
It should be noted that, the coiled radiator and the shell-and-tube evaporator may be customized devices by the company of the technology of the Tianjin Ding. The electric compressor is an electrically driven compressor, and for example, an integrally used scroll machine may be used. Mechanical compressors are existing compressors that are driven by an engine. The electric compressor and the mechanical engine are all mature and well-known engines in the prior art.
The working principle of the double-compressor mixed refrigerating system is as follows: in the long-distance refrigerator car running process, the mechanical compressor 10 is started through the engine 18 and the electromagnetic clutch 17 to maintain the running of the refrigerating system, meanwhile, the solar energy converted electric energy is stored in the storage battery 12 to enable the electric compressor 9 to run when the refrigerator car 100 stops at night, so that the temperature in the compartment body is maintained stable.
The working principle of the constant temperature control system of the invention is as follows: the whole system takes a cold storage water tank 2 as a constant temperature influencing unit of the refrigerator car 100, glycol solution as a secondary refrigerant, a refrigerating unit keeps refrigeration operation all the time in the whole process, the temperature of the cold storage water tank 2 is kept constant through the switching of a first electromagnetic valve 3 and a second electromagnetic valve 6, the control temperature precision of the cold storage water tank 2 is set to be +/-0.5 ℃, when the water temperature is lower than the lower limit of a preset goods storage temperature, the fact that the refrigerating system is not required to supply cold to the cold storage water tank 2 is described, the first electromagnetic valve 3 on the cold storage water tank 2 is closed, the second electromagnetic valve 6 on a radiator 7 is opened, the refrigerating unit and the radiator 7 form bypass circulation, and the evaporator 8 distributes redundant cold to the outside;
In the invention, the coil radiator 4 is connected with the cold accumulation water tank 2 to release the cold energy of glycol refrigerating medium to the refrigerated carriage, and the temperature in the refrigerator body is kept constant. In the running process of the refrigerated vehicle, the electromagnetic clutch 17 is closed to drive the mechanical compressor 10 to work, the mechanical compressor 10 sucks the refrigerant steam with lower pressure, compresses the refrigerant steam into high-temperature high-pressure gas and sends the high-temperature high-pressure gas into the condenser 16, the condenser 16 is forced to be ventilated by the outside to condense into high-pressure liquid refrigerant, and the high-pressure liquid refrigerant enters the evaporator 8 in mist form after being throttled by the throttle valve 15 and absorbs the surrounding heat, thereby achieving the refrigerating effect. During daytime running of the refrigerated vehicle, the solar photovoltaic panel 14 (i.e., photovoltaic array) absorbs external solar energy and charges the storage battery 12 through the matched photovoltaic controller 13. When the refrigerator car is stopped, the storage battery 12 converts the stored direct current into alternating current through the inverter 11 to power the electric compressor 9. The electric compressor 9 and the mechanical compressor 10 share one refrigeration cycle.
When the water temperature exceeds the preset upper limit of the storage temperature of goods, the second electromagnetic valve 6 on the radiator 7 is closed, the first electromagnetic valve 3 on the cold storage water tank 2 is opened, and the cold energy provided by the refrigerating unit enters the cold storage water tank 2 to supplement the loss of the cold energy, so that the temperature stability of the coil radiator 4 in the refrigerated compartment is maintained.
Compared with the prior art, the cold accumulation type constant temperature refrigerator car provided by the invention has the following beneficial effects:
1. the refrigerator car is suitable for long-distance transportation, the cold accumulation water tank that it had circulates constantly, simultaneously, the solar drive refrigerating plant in the make full use of transportation cooperates traditional mechanical refrigeration combined action, guarantees that the interior temperature of carriage is even and invariable.
2. The carriage structural design subregion, carriage include walk-in and discharge chamber, can make the refrigerator car carriage when loading and unloading goods, and temperature fluctuation is little to make the delivery car when products such as medicine that the delivery was stored, can not be because the loading and unloading goods makes the temperature fluctuation that produces, and the quality to products such as medicine bacterin leads to the fact the influence.
3. The double-compressor mixed refrigerating system adopted by the invention works jointly, saves energy and solves the problem that the vehicle is stopped at night without stopping.
4. The invention adopts a constant temperature control system and uses a coil radiator to maintain the temperature in the refrigerator carriage stable.
In summary, compared with the prior art, the cold accumulation type constant temperature refrigerated vehicle provided by the invention can ensure that the temperature in the compartment is maintained within a relatively constant temperature range, improves the safety and timeliness of cargoes such as medical vaccines in the transportation process, is beneficial to promoting the wide popularization and application of the refrigerated vehicle, and has great production and practical significance.
The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.
Claims (5)
1. The cold accumulation type constant temperature refrigerator car is characterized by comprising a refrigerator car body (100), wherein a refrigerating system and a constant temperature control system are arranged on the refrigerator car body (100), and the cold accumulation type constant temperature refrigerator car comprises the following components:
the refrigerating system is used for refrigerating a carriage of the refrigerated vehicle body (100);
the constant temperature control system is connected with the refrigerating system and is used for receiving and storing the cold energy conveyed by the refrigerating system and maintaining the temperature in the carriage of the refrigerated vehicle body (100) to be stable;
The dual-compressor hybrid refrigeration system comprises an evaporator (8);
a refrigerant outlet at the right end of the top of the evaporator (8) is respectively connected with a refrigerant inlet of the electric compressor (9) and a refrigerant inlet of the mechanical compressor (10);
The refrigerant outlet of the electric compressor (9) and the refrigerant outlet of the mechanical compressor (10) are converged through a hollow connecting pipeline and then connected with the refrigerant inlet at the top of the condenser (16);
A refrigerant outlet at the bottom of the condenser (16) is connected with a refrigerant inlet at the right end of the bottom of the evaporator (8) through a throttle valve (15);
Constant temperature control system, including first water pump (1), cold-storage water tank (2), coiled radiator (4), first solenoid valve (3), second solenoid valve (6) and radiator (7), wherein:
The cold accumulation water tank (2) is arranged in a carriage of the refrigerated vehicle body (100);
glycol solution used as a secondary refrigerant is pre-stored in the cold accumulation water tank (2);
The first liquid outlet at the top of the cold accumulation water tank (2) is communicated with the liquid inlet of the coil radiator (4) through a first water pump (1);
The first liquid inlet at the upper part of the right side of the cold accumulation water tank (2) is communicated with the liquid outlet of the coiled radiator (4);
the second liquid outlet at the lower part of the right side of the cold accumulation water tank (2) is respectively communicated with the liquid inlet of the second water pump (5) and the liquid inlet of the radiator (7);
The liquid outlet of the second water pump (5) is communicated with the liquid inlet at the left end of the top of the evaporator (8);
the liquid outlet at the left end of the bottom of the evaporator (8) is communicated with the second liquid inlet at the bottom of the cold accumulation water tank (2) through the first electromagnetic valve (3);
the liquid outlet of the radiator (7) is connected with a connecting pipeline between the first electromagnetic valve (3) and the second liquid inlet at the bottom of the cold accumulation water tank (2) through the second electromagnetic valve (6);
when the water temperature exceeds the preset upper limit of the storage temperature of goods, a second electromagnetic valve (6) on a radiator (7) is closed, a first electromagnetic valve (3) on a cold accumulation water tank (2) is opened, and cold energy provided by a refrigerating unit enters the cold accumulation water tank (2) to supplement the loss of the cold energy, so that the temperature stability of a coil radiator (4) in a refrigerated compartment is maintained.
2. Cold accumulation type constant temperature refrigerator car as in claim 1 characterized in that the dual compressor hybrid refrigeration system further comprises an electromagnetic clutch (17) and an engine (18):
And an engine (18) for outputting electric energy to the mechanical compressor (10) through the electromagnetic clutch (17) after starting.
3. Cold accumulation type constant temperature refrigerator car as in claim 2 characterized in that the dual compressor hybrid refrigeration system further comprises a solar photovoltaic panel (14);
a solar photovoltaic panel (14) located on the cabin surface of the refrigerated vehicle body (100);
The solar photovoltaic panel (14) is electrically connected with the storage battery (12) through the photovoltaic controller (13);
and the storage battery (12) is used for storing electric energy conveyed by the solar photovoltaic panel (14) and supplying power to the electric compressor (9) through the inverter (11).
4. Cold-storage type constant temperature refrigerated vehicle according to claim 1, characterized in that the compartment of the refrigerated vehicle body (100) is provided with a solar photovoltaic panel (14), a tin foil composite layer (20), a polyurethane heat insulation layer (21), a heat preservation layer (22) and a coil radiator (4) in sequence from outside to inside.
5. Cold accumulation type thermostatic refrigerator car as in any one of claims 1 to 4, characterized in that the compartment of the refrigerator car body (100) comprises a hollow refrigerator compartment (101) and a discharge compartment (102);
a door curtain (24) or a partition plate is arranged between the refrigerating chamber (101) and the unloading chamber (102);
the partition board is provided with a sealing door which can be opened and closed.
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| CN113497488A (en) * | 2020-04-03 | 2021-10-12 | 长沙智能驾驶研究院有限公司 | Energy control method and system for refrigerating box |
| CN112721784B (en) * | 2020-12-16 | 2022-04-26 | 江苏大学 | Hybrid refrigerator car with two cold source systems |
| CN112706682A (en) * | 2021-02-01 | 2021-04-27 | 辽宁会记汽车制造集团有限公司 | Double-compressor mixed refrigeration semi-mounted refrigeration and insulation vehicle |
| CN113115812B (en) * | 2021-03-31 | 2023-05-26 | 天津市农业科学院 | Synergistic anti-corrosion intervention fresh-keeping method for flat peach before and after picking |
| CN115111828A (en) * | 2022-05-18 | 2022-09-27 | 东南大学 | Time-sharing overlapping refrigeration double-temperature cold-chain logistics vehicle based on vehicle-mounted photovoltaic and cold accumulation |
| WO2023229558A2 (en) * | 2022-05-27 | 2023-11-30 | Atc Mekatroni̇k Uluslararasi Diş Ti̇caret Ve Sanayi̇ Li̇mi̇ted Şi̇rketi̇ | Environmentally friendly cooling system improved for carrier vehicles |
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| CN101338954A (en) * | 2008-08-07 | 2009-01-07 | 武汉云鹤定宇制冷科技有限公司 | Truck tail gas adsorption refrigeration air conditioner for operator cabin |
| CN101458005B (en) * | 2009-01-15 | 2010-09-01 | 北京航空航天大学 | Solar photovoltaic-commercial power mixedly driving cold-storage and thermal storage type heat pump unit |
| CN101877557A (en) * | 2009-04-30 | 2010-11-03 | 北京智慧剑科技发展有限责任公司 | Photovoltaic power station for renewable energy resource facility agriculture |
| KR101189417B1 (en) * | 2010-11-30 | 2012-10-15 | 기아자동차주식회사 | Temperature Control Apparatus for Vehicle |
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| CN104734631B (en) * | 2015-03-24 | 2017-04-05 | 珠海格力电器股份有限公司 | The distribution priority controller of photovoltaic generating system and control method |
| CN106004344A (en) * | 2016-06-05 | 2016-10-12 | 山东商业职业技术学院 | Refrigerator car constant temperature refrigeration system for experiments |
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