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CN117404841A - Vehicle-mounted combined type refrigerating compartment system and control method thereof - Google Patents

Vehicle-mounted combined type refrigerating compartment system and control method thereof Download PDF

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Publication number
CN117404841A
CN117404841A CN202311373912.9A CN202311373912A CN117404841A CN 117404841 A CN117404841 A CN 117404841A CN 202311373912 A CN202311373912 A CN 202311373912A CN 117404841 A CN117404841 A CN 117404841A
Authority
CN
China
Prior art keywords
refrigerating
refrigeration
vehicle
fan
compartment system
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202311373912.9A
Other languages
Chinese (zh)
Inventor
吴祥威
王日来
邱小瑜
罗永硕
杨世宇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangxi Yuchai New Energy Vehicle Co Ltd
Original Assignee
Guangxi Yuchai New Energy Vehicle Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guangxi Yuchai New Energy Vehicle Co Ltd filed Critical Guangxi Yuchai New Energy Vehicle Co Ltd
Priority to CN202311373912.9A priority Critical patent/CN117404841A/en
Publication of CN117404841A publication Critical patent/CN117404841A/en
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
    • F25D11/003—Transport containers
    • 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
    • B60H1/00357—Air-conditioning arrangements specially adapted for particular 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
    • B60H1/3205—Control means therefor
    • 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
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D33/00—Superstructures for load-carrying vehicles
    • B62D33/04—Enclosed load compartments ; Frameworks for movable panels, tarpaulins or side curtains
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
    • F25D17/06—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
    • F25D17/067—Evaporator fan units
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D23/00—General constructional features
    • F25D23/006—General constructional features for mounting refrigerating machinery components
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D29/00—Arrangement or mounting of control or safety devices
    • F25D29/003—Arrangement or mounting of control or safety devices for movable devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D29/00—Arrangement or mounting of control or safety devices
    • F25D29/005—Mounting of control devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2400/00—General features of, or devices for refrigerators, cold rooms, ice-boxes, or for cooling or freezing apparatus not covered by any other subclass
    • F25D2400/20—Carts specially adapted for transporting objects to be cooled
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2400/00—General features of, or devices for refrigerators, cold rooms, ice-boxes, or for cooling or freezing apparatus not covered by any other subclass
    • F25D2400/36—Visual displays

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)

Abstract

The invention discloses a vehicle-mounted combined type refrigerating compartment system and a control method thereof, wherein the system comprises the following components: refrigerating mechanism, refrigerating mechanism and display control panel. A plurality of mutually isolated refrigerating boxes are arranged in the refrigerating mechanism; the refrigerating mechanism is respectively and electrically connected with the plurality of refrigerating cabins; and the display control panel is electrically connected with the refrigerating mechanism and is used for controlling the opening and closing of the refrigerating mechanism, so that the refrigerating temperatures of the plurality of refrigerating boxes can be respectively controlled. Therefore, the vehicle-mounted combined type refrigerating compartment system can realize partition refrigeration, different cargo compartments are controlled at different temperatures, and the cold chain transportation of different cargoes on the same vehicle can be realized at the same time; the temperature adjustment can be realized quickly and accurately; the same set of refrigeration control system is shared, the refrigeration function is started when the cargo box needs to be refrigerated, and the cargo box does not need to be refrigerated, so that the energy consumption of the whole vehicle is reduced, the operation cost is saved, and the cruising time of the vehicle is improved.

Description

Vehicle-mounted combined type refrigerating compartment system and control method thereof
Technical Field
The invention relates to the technical field of cold chain logistics automobiles, in particular to a vehicle-mounted combined type refrigerating compartment system and a control method thereof.
Background
As shown in fig. 1, the conventional cold chain logistics car refrigerating compartment system comprises a set of refrigerating units and a refrigerating compartment, and a user can only set the refrigerating units at one temperature at a time to transport the same kind of goods with a cold insulation requirement. The user cannot realize the transportation of various cargoes at one time in the same vehicle due to the requirements of different cold insulation temperatures. In addition, the user can not full cargo compartment at every turn, and the refrigerating unit consumes more energy in order to meet the refrigerating requirement of the whole cargo compartment, and more fuel or power battery electric quantity can be consumed for both the fuel vehicle and the new energy vehicle, so that the whole vehicle cruising is influenced.
As shown in fig. 2, the conventional vehicle-mounted refrigerating unit is composed of a display control panel, a refrigerating system controller, a compressor, a condenser, a fan, an evaporator, a fan, a temperature sensor, a refrigerant pipeline and a circuit. The refrigeration system controller is respectively connected with the display and control panel, the compressor, the condenser fan, the evaporator fan in the refrigeration compartment and the temperature sensor through wire harnesses. The user opens or closes the whole refrigerating system through a display and control panel arranged in the cab, the target temperature setting of the refrigerating compartment is also carried out on the panel, related control signals are sent to a refrigerating system controller through a circuit, and the refrigerating system controller controls the rotating speed of the compressor and the rotating speed of the condenser fan and the evaporator fan through a certain algorithm according to the temperature sensor in the refrigerating compartment and the target temperature value set by the panel, so that the refrigerating compartment quickly reaches the set target temperature.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person of ordinary skill in the art.
Disclosure of Invention
The invention aims to provide a vehicle-mounted combined type refrigerating compartment system and a control method thereof, which can realize regional refrigeration, control different cargo compartments at different temperatures and simultaneously realize the cold chain transportation of different cargoes on the same vehicle; the temperature adjustment can be realized quickly and accurately; the same set of refrigeration control system is shared, the refrigeration function is started when the cargo box needs to be refrigerated, and the cargo box does not need to be refrigerated, so that the energy consumption of the whole vehicle is reduced, the operation cost is saved, and the cruising time of the vehicle is improved.
To achieve the above object, in a first aspect, the present invention provides a vehicle-mounted combined type refrigerating compartment system, comprising: refrigerating mechanism, refrigerating mechanism and display control panel. A plurality of mutually isolated refrigerating boxes are arranged in the refrigerating mechanism; the refrigerating mechanism is respectively and electrically connected with the plurality of refrigerating cabins; and the display control panel is electrically connected with the refrigerating mechanism and is used for controlling the opening and closing of the refrigerating mechanism, so that the refrigerating temperatures of the plurality of refrigerating boxes can be respectively controlled.
In one embodiment of the present invention, each of the refrigerating compartments includes: a temperature sensor, an evaporator and a fan. The temperature sensor is electrically connected with the refrigerating mechanism; and the evaporator and the fan are arranged at the inner top of the refrigeration compartment, and are electrically connected with the refrigeration mechanism.
In an embodiment of the invention, each of the refrigerating compartments further comprises: an expansion valve and a damper. One end of the expansion valve is connected with the evaporator and the fan; and the air door can be fixed below the evaporator and the fan in an opening and closing manner, and is electrically connected with the refrigeration mechanism.
In one embodiment of the present invention, the refrigeration mechanism includes: condenser and fan, and compressor. The condenser and the fan are respectively connected with the other ends of the expansion valves of the plurality of refrigeration boxes through a refrigerant pipeline; and the compressor is respectively connected with the condenser and the fan, and the evaporators and the fans of the plurality of refrigeration boxes.
In an embodiment of the present invention, the refrigeration mechanism further includes: and the refrigeration controller is respectively and electrically connected with the display control panel, the condenser, the fan, the compressor, the temperature sensors of the refrigerating boxes, the evaporator, the fan and the air door.
In an embodiment of the invention, the refrigeration mechanism further includes a plurality of electromagnetic valves respectively disposed between the expansion valves of the plurality of refrigeration chambers and the condenser and the fan, and the plurality of electromagnetic valves are respectively electrically connected with the refrigeration controller.
In an embodiment of the present invention, when a refrigeration function is started for a corresponding refrigeration compartment on the display control panel, the refrigeration controller is configured to control the solenoid valve on the refrigerant pipeline of the corresponding refrigeration compartment to be opened, and control the corresponding damper, the condenser, the fan, the evaporator, the fan, and the compressor to be sequentially started, so that the refrigerant circulates in the loop.
In one embodiment of the present invention, the display control panel is capable of individually displaying and setting the temperature or parameter of each of the refrigeration compartments.
In one embodiment of the invention, the temperatures of the plurality of refrigeration compartments are the same or different.
In a second aspect, the present invention provides a control method for a vehicle-mounted combined type refrigerator compartment system, based on the vehicle-mounted combined type refrigerator compartment system, the control method includes:
acquiring operation information of a user on a display control panel;
and correspondingly controlling the refrigeration box to start the refrigeration function according to the operation information.
Compared with the prior art, the vehicle-mounted combined type refrigerating compartment system and the control method thereof have the following beneficial effects:
1. the rotation speed of the compressor, the rotation speed of the condenser fan and the opening degree of the air door of each refrigerating compartment are respectively adjusted through the refrigerating controller, so that the demand adjustment of the refrigerating capacity of the whole system is ensured, and the demand adjustment of the refrigerating capacity of a single cargo compartment is also solved;
2. the system can realize partition refrigeration, different cargo compartments are controlled at different temperatures, and meanwhile, the cold chain transportation of different cargoes on the same vehicle is realized;
3. the same set of refrigeration control system is shared, the cargo box needing refrigeration is started for refrigeration, and the cargo box needing refrigeration is closed for refrigeration, so that the energy consumption of the whole vehicle is reduced, the operation cost is saved, and the endurance of the vehicle is improved;
4. the intelligent temperature control device can realize temperature adjustment rapidly and accurately;
5. different cargo compartments are relatively independent, and the cooling capacity of other cargo compartments is not influenced when the requirements of carrying the cargo by opening the door are met.
Drawings
Fig. 1 is a schematic structural view of a conventional cold chain logistics vehicle refrigerating compartment system;
FIG. 2 is a schematic diagram of a conventional vehicle-mounted refrigeration compartment system;
fig. 3 is a schematic structural view of a vehicle-mounted combined type refrigerating compartment system according to an embodiment of the present invention;
fig. 4 is a schematic diagram of the architecture of a refrigeration controller of a vehicle-mounted combined refrigeration compartment system according to an embodiment of the invention;
FIG. 5 is a schematic diagram of a control strategy for a condenser fan and compressor of an in-vehicle combination refrigeration compartment system according to one embodiment of the invention;
FIG. 6 is a schematic diagram of a control strategy for controlling one refrigeration compartment of a refrigeration controller of a vehicle-mounted combination refrigeration compartment system in accordance with one embodiment of the invention;
FIG. 7 is a schematic diagram of a control strategy for controlling another refrigeration compartment of a refrigeration controller of a vehicle-mounted combined refrigeration compartment system in accordance with an embodiment of the invention;
fig. 8 is a schematic diagram of a control strategy for controlling a further refrigeration compartment of a refrigeration controller of an on-board combined refrigeration compartment system according to an embodiment of the invention.
The main reference numerals illustrate:
1-refrigerating carriage, 2-display control panel, 3-temperature sensor, 4-evaporator and fan, 5-expansion valve, 6-air door, 7-condenser and fan, 8-compressor, 9-refrigeration controller, 10-solenoid valve.
Detailed Description
The following detailed description of embodiments of the invention is, therefore, to be taken in conjunction with the accompanying drawings, and it is to be understood that the scope of the invention is not limited to the specific embodiments.
Throughout the specification and claims, unless explicitly stated otherwise, the term "comprise" or variations thereof such as "comprises" or "comprising", etc. will be understood to include the stated element or component without excluding other elements or components.
Fig. 3 is a schematic structural view of a vehicle-mounted combined type refrigerating compartment system according to an embodiment of the present invention; fig. 4 is a schematic diagram of the architecture of a refrigeration controller of a vehicle-mounted combined refrigeration compartment system according to an embodiment of the invention; FIG. 5 is a schematic diagram of a control strategy for a condenser fan and compressor of an in-vehicle combination refrigeration compartment system according to one embodiment of the invention; FIG. 6 is a schematic diagram of a control strategy for controlling one refrigeration compartment of a refrigeration controller of a vehicle-mounted combination refrigeration compartment system in accordance with one embodiment of the invention; FIG. 7 is a schematic diagram of a control strategy for controlling another refrigeration compartment of a refrigeration controller of a vehicle-mounted combined refrigeration compartment system in accordance with an embodiment of the invention; fig. 8 is a schematic diagram of a control strategy for controlling a further refrigeration compartment of a refrigeration controller of an on-board combined refrigeration compartment system according to an embodiment of the invention.
As shown in fig. 3 to 8, in a first aspect, a vehicle-mounted combined refrigerator compartment system according to a preferred embodiment of the present invention includes: a refrigerating mechanism, a refrigerating mechanism and a display control panel 2. A plurality of mutually isolated refrigerating boxes 1 are arranged in the refrigerating mechanism; the refrigerating mechanism is respectively and electrically connected with the plurality of refrigerating boxes 1; and the display control panel 2 is electrically connected with the refrigerating mechanism, and the display control panel 2 is used for controlling the opening and closing of the refrigerating mechanism, so that the refrigerating temperatures of the plurality of refrigerating boxes 1 can be respectively controlled.
In one embodiment of the present invention, each of the refrigerating compartments 1 includes: a temperature sensor 3, an evaporator and a fan 4. The temperature sensor 3 is electrically connected with the refrigerating mechanism; and the evaporator and the fan 4 are arranged at the inner top of the refrigerator compartment 1, and the evaporator and the fan 4 are electrically connected with the refrigeration mechanism.
In an embodiment of the present invention, each of the refrigerating compartments 1 further includes: an expansion valve 5 and a damper 6. One end of the expansion valve 5 is connected with the evaporator and the fan 4; and the air door 6 can be fixed below the evaporator and the fan 4 in an opening and closing manner, and the air door 6 is electrically connected with the refrigeration mechanism.
In one embodiment of the present invention, the refrigeration mechanism includes: a condenser and fan 7 and a compressor 8. The condenser and the fan 7 are respectively connected with the other ends of the expansion valves 5 of the plurality of refrigeration boxes 1 through refrigerant pipelines; and the compressor 8 is connected to the condenser and fan 7, the evaporator and fan 4 of the plurality of refrigerator compartments 1, respectively.
In an embodiment of the present invention, the refrigeration mechanism further includes: and a refrigeration controller 9 electrically connected to the display control panel 2, the condenser and fan 7, the compressor 8, the temperature sensors 3 of the plurality of refrigeration compartments 1, the evaporator and fan 4, and the damper 6, respectively.
In an embodiment of the present invention, the refrigeration mechanism further includes a plurality of electromagnetic valves 10 respectively disposed between the expansion valves 5 and the condensers and fans 7 of the plurality of refrigeration compartments 1, and the plurality of electromagnetic valves 10 are respectively electrically connected to the refrigeration controller 9.
In an embodiment of the present invention, when the refrigeration function is started on the display control panel 2 for the corresponding refrigeration compartment 1, the refrigeration controller 9 is configured to control the solenoid valve 10 on the refrigerant pipeline of the corresponding refrigeration compartment 1 to be opened, and control the corresponding damper 6, the condenser and fan 7, the evaporator and fan 4, and the compressor 8 to be sequentially started, so that the refrigerant circulates in the circuit.
In one embodiment of the present invention, the display control panel 2 is capable of individually displaying and setting the temperature or parameters of each of the refrigerator compartments 1.
In one embodiment of the present invention, the temperatures of the plurality of refrigerating compartments 1 are the same or different.
In a second aspect, the present invention provides a control method for a vehicle-mounted combined type refrigerator compartment system, based on the vehicle-mounted combined type refrigerator compartment system, the control method includes:
acquiring operation information of a user on a display control panel;
and correspondingly controlling the refrigeration box to start the refrigeration function according to the operation information.
In practical applications, the present invention divides a large refrigerator compartment 1 into several smaller refrigerator compartments 1, for example into 3 refrigerator compartments 1. Similarly, the refrigeration controller 9 is connected to the display control panel 2, the compressor 8, the condenser and the fan 7 through circuits, and the refrigeration controller 9 is connected to the solenoid valve 10, the temperature sensor 3, the evaporator and the fan 4, and the damper 6 in each refrigerator compartment 1 through circuits. Before the expansion valve 5 of each refrigerating compartment 1 enters the refrigerant, the refrigerant is switched on and off by the electromagnetic valve 10. After the display control panel 2 opens the refrigeration function for the corresponding refrigeration compartment 1, the refrigeration controller 9 controls the electromagnetic valve 10 on the refrigerant circuit of the corresponding refrigeration compartment 1 to be opened, and controls the air door 6, the condenser fan, the evaporator fan and the compressor 8 to be started in sequence, the refrigerant circulates in the circuit, the temperature of the refrigerant is reduced after passing through the expansion valve 5, the refrigerant enters the evaporator to absorb the air temperature in the refrigeration compartment, and the evaporator fan sends cold air into the refrigeration compartment 1. The solenoid valve 10 added on the refrigerant loop of each refrigerating compartment 1 can realize independent on-off of the refrigerating of the goods compartment.
As shown in fig. 4, a user can turn on and off the refrigeration system on the display control panel 2, and can individually control the refrigerant circuit operation of each refrigerator compartment 1, and individually display and set the temperature or parameter of each refrigerator compartment 1; information such as the system operation failure and the compressor 8 operation failure can be fed back through the refrigeration controller 9 and displayed on a display. The refrigeration controller 9 receives the actual temperature feedback of each refrigeration compartment 1 and the target temperature set by the control panel, and controls and adjusts the opening of the compressor 8, the condenser fan, each electromagnetic valve 10, the evaporator fan and the air door 6 through each module algorithm inside the refrigeration controller 9.
As shown in fig. 5, when the system is turned on and there is a refrigerating compartment 1 having a refrigerating requirement, the corresponding set temperature and feedback temperature of the refrigerating compartment 1 are different, and if there is a temperature difference Δt1, Δt2 or Δt3 between the three compartments is less than or equal to the corresponding out-of-tolerance temperature Tx, ty or Tz, the maximum absolute values of the temperature differences between the three compartments are used as the inputs of the condenser fan PI module and the compressor 8PI module, respectively. The input of PI is equivalent to the condenser fan voltage, and then the PWM speed regulation signal of the condenser fan is output according to the relation between the PI and the voltage; and after the maximum absolute value of the temperature difference is input into the PI module of the compressor 8, the calculation result is input as a rotating speed ring of a controller of the compressor 8, so that the variable frequency speed regulation of the compressor 8 is realized. The two PI modules are required to finish proportional and integral parameter setting in actual calibration respectively.
As shown in fig. 6 to 8, after the refrigerating unit is turned on to cool, since the temperatures may be set differently for each individual refrigerating compartment 1, the state that the temperature has been reached is also different, and the system may be operating according to the maximum temperature difference requirement, some refrigerating compartments 1 have reached or reach the target temperature quickly and do not need to be cooled continuously or at a too high cooling rate. At this time, the refrigeration controller 9 individually adjusts the on/off of the solenoid valve 10 of each refrigeration compartment 1, or adjusts the rotation speed of the evaporator fan, or adjusts the opening of the damper 6 to regulate the amount of refrigeration entering the refrigeration compartment 1. For example, the temperature of the first refrigerating compartment 1 is set to-20 ℃, the temperature sensor 3 feeds back to the refrigerating controller 9 that the temperature reaches-23 ℃, then Δt1=3 ℃, if the out-of-tolerance temperature Tx is set to 2 ℃, the refrigerating controller 9 controls the corresponding electromagnetic valve 10 of the refrigerating compartment 1 to be disconnected, and the evaporator fan and the air door 6 of the first refrigerating compartment 1 stop working; when the temperature of the first refrigerating compartment 1 rises to more than-22 ℃, deltaT1 is less than or equal to Tx, the electromagnetic valve 10 corresponding to the refrigerating compartment 1 is conducted, and the evaporator fan and the air door 6 are both opened to work; when the first refrigerating compartment 1 is cooled to reach the target temperature, setting the absolute value of the difference between the target temperature and the feedback temperature to be gradually reduced, and according to the PI module adjusting principle, the larger the absolute value is, the larger the PWM duty ratio output to the evaporator fan and the air door 6 by the controller is, the faster the fan rotating speed is, and the larger the opening of the air door 6 is; conversely, the slower the fan speed, the smaller the opening of the damper 6. Thereby achieving the purpose of intelligently adjusting the temperature of the refrigerating compartment 1. Likewise, the other refrigerator compartment 1 temperature control logic is the same as described above (as shown in fig. 7 and 8). The Tx, ty and Tz out-of-tolerance temperatures are set on a control panel, and each target temperature value corresponds to a certain out-of-tolerance temperature value.
In summary, the vehicle-mounted combined type refrigerating compartment system and the control method thereof have the following beneficial effects:
1. the rotation speed of the compressor 8, the rotation speed of the condenser fan and the opening of the air door 6 of each refrigerating compartment 1 are respectively regulated by the refrigeration controller 9, so that the demand regulation of the refrigerating capacity of the whole system is ensured, and the demand regulation of the refrigerating capacity of a single cargo compartment is also solved;
2. the system can realize partition refrigeration, different cargo compartments are controlled at different temperatures, and meanwhile, the cold chain transportation of different cargoes on the same vehicle is realized;
3. the same set of refrigeration control system is shared, the cargo box needing refrigeration is started for refrigeration, and the cargo box needing refrigeration is closed for refrigeration, so that the energy consumption of the whole vehicle is reduced, the operation cost is saved, and the endurance of the vehicle is improved;
4. the intelligent temperature control device can realize temperature adjustment rapidly and accurately;
5. different cargo compartments are relatively independent, and the cooling capacity of other cargo compartments is not influenced when the requirements of carrying the cargo by opening the door are met.
The foregoing descriptions of specific exemplary embodiments of the present invention are presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain the specific principles of the invention and its practical application to thereby enable one skilled in the art to make and utilize the invention in various exemplary embodiments and with various modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.

Claims (10)

1. A vehicle-mounted modular refrigeration compartment system, comprising:
the refrigerating mechanism is internally provided with a plurality of mutually isolated refrigerating boxes;
the refrigerating mechanism is respectively and electrically connected with the plurality of refrigerating cabins; and
and the display control panel is electrically connected with the refrigerating mechanism and used for controlling the opening and closing of the refrigerating mechanism, so that the refrigerating temperatures of the refrigerating chambers can be respectively controlled.
2. The vehicle-mounted modular refrigeration compartment system of claim 1, wherein each of the refrigeration compartments comprises:
the temperature sensor is electrically connected with the refrigerating mechanism; and
the evaporator and the fan are arranged at the inner top of the refrigerating box and are electrically connected with the refrigerating mechanism.
3. The vehicle-mounted modular refrigeration compartment system of claim 2, wherein each of the refrigeration compartments further comprises:
an expansion valve, one end of which is connected with the evaporator and the fan; and
the air door can be fixed below the evaporator and the fan in an opening and closing mode, and the air door is electrically connected with the refrigerating mechanism.
4. The vehicle-mounted modular refrigeration compartment system of claim 3, wherein the refrigeration mechanism comprises:
the condenser and the fan are respectively connected with the other ends of the expansion valves of the plurality of refrigeration boxes through refrigerant pipelines; and
and the compressors are respectively connected with the condenser and the fan, and the evaporators and the fans of the plurality of refrigeration boxes.
5. The vehicle-mounted modular refrigeration compartment system of claim 4, wherein the refrigeration mechanism further comprises:
and the refrigeration controller is respectively and electrically connected with the display control panel, the condenser, the fan, the compressor, the temperature sensors of the refrigerating boxes, the evaporator, the fan and the air door.
6. The vehicle-mounted combined refrigeration compartment system of claim 5, wherein the refrigeration mechanism further comprises a plurality of solenoid valves disposed between the expansion valves and the condenser and the fan of the plurality of refrigeration compartments, respectively, and the plurality of solenoid valves are electrically connected to the refrigeration controller, respectively.
7. The vehicle-mounted combined type refrigerator compartment system of claim 6, wherein when a refrigerating function is started for the corresponding refrigerator compartment on the display control panel, the refrigerating controller is used for controlling the electromagnetic valve on the refrigerant pipeline of the corresponding refrigerator compartment to be opened and controlling the corresponding air door, the condenser, the fan, the evaporator, the fan and the compressor to be sequentially started, so that the refrigerant circulates in the loop.
8. The vehicle-mounted modular refrigeration compartment system of claim 1, wherein the display control panel is capable of individually displaying and setting the temperature or parameter of each of the refrigeration compartments.
9. The vehicle-mounted modular refrigeration compartment system of claim 1, wherein the temperatures of the plurality of refrigeration compartments are the same or different.
10. A control method of a vehicle-mounted combined type refrigerating compartment system based on any one of claims 1 to 9, characterized in that the control method comprises:
step S100, obtaining operation information of a user on a display control panel;
and step 200, correspondingly controlling the refrigeration box to start the refrigeration function according to the operation information.
CN202311373912.9A 2023-10-23 2023-10-23 Vehicle-mounted combined type refrigerating compartment system and control method thereof Pending CN117404841A (en)

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CN202311373912.9A CN117404841A (en) 2023-10-23 2023-10-23 Vehicle-mounted combined type refrigerating compartment system and control method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202311373912.9A CN117404841A (en) 2023-10-23 2023-10-23 Vehicle-mounted combined type refrigerating compartment system and control method thereof

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CN117404841A true CN117404841A (en) 2024-01-16

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