CN111174515A - Intelligent control system for refrigeration house according to temperature fluctuation - Google Patents
Intelligent control system for refrigeration house according to temperature fluctuation Download PDFInfo
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- CN111174515A CN111174515A CN202010047819.9A CN202010047819A CN111174515A CN 111174515 A CN111174515 A CN 111174515A CN 202010047819 A CN202010047819 A CN 202010047819A CN 111174515 A CN111174515 A CN 111174515A
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- 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
- F25D13/00—Stationary devices, e.g. cold-rooms
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- 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
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B1/00—Compression machines, plants or systems with non-reversible cycle
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- 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
- F25D17/042—Air treating means within refrigerated spaces
- F25D17/045—Air flow control arrangements
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- 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
- F25D23/02—Doors; Covers
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- 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
- F25D27/00—Lighting arrangements
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- 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
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- 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
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
The invention discloses a refrigerator intelligent control system according to temperature fluctuation, which comprises a refrigeration system and a refrigerator control system (9), wherein: the refrigeration system comprises a compressor (1), a condenser (2), a throttling device (3), a first air cooler (4) and a second air cooler (5); the refrigerant outlet of the compressor (1) is connected with the refrigerant inlet of the condenser (2); a refrigerant outlet of the condenser (2) is connected with refrigerant inlets of the first air cooler and the second air cooler through a throttling device (3); the cold storage control system comprises a real-time cold storage temperature measuring module, a wind speed measuring module of a fan and a control unit; and the control unit is used for controlling the air volume of the first air cooler and the air volume of the second air cooler. According to the invention, the refrigerating capacity is changed by controlling the variable-frequency air cooler to be matched with the internal load of the refrigeration house, so that a passive adjusting mode based on the actual temperature value of the refrigeration house is avoided, the fluctuation of the internal temperature of the refrigeration house can be reduced, and the total energy consumption of the refrigeration house is reduced.
Description
Technical Field
The invention relates to the technical field of freezing and refrigerating equipment, in particular to an intelligent control system of a refrigeration house according to temperature fluctuation.
Background
The cold storage is a building which obtains a stable low-temperature environment through an artificial refrigeration method, is widely applied to storage, preservation and the like of food, and is an important infrastructure for ensuring food safety and food quality.
For a refrigeration house, when the refrigerating capacity of a refrigerating system is not matched with the heat of the refrigeration house, the temperature of the refrigeration house is increased or decreased. Because the storage capacity of the refrigeration house is large, a plurality of goods are stored in the refrigeration house, and the heat storage capacity of the goods and the enclosure structure is also strong. Therefore, the temperature inside the freezer and the heat quantity (i.e., the cooling load) of the freezer are not synchronized, and there is a strong hysteresis, and there is a large time lag between the change in the cargo temperature and the change in the temperature inside the freezer. Such hysteresis and deviation, on the one hand, make the temperature fluctuation of the freezer great, is unfavorable for the quality assurance of the food; on the other hand, it also causes hysteresis and deviation in the control of the refrigeration system, so that the energy consumption of the refrigeration system increases.
Because the refrigeration of the refrigeration house consumes considerable energy, how to effectively ensure that the temperature in the refrigeration house tends to a reasonable value, the articles in the refrigeration house cannot be damaged due to temperature mutation, and meanwhile, the energy is saved, which becomes the most important factor in the management of the refrigeration house.
However, there is no technology to solve the above technical problems.
Disclosure of Invention
The invention aims to provide an intelligent control system of a refrigeration house according to temperature fluctuation aiming at the technical defects in the prior art.
Therefore, the invention provides an intelligent control system of a refrigeration house according to temperature fluctuation, which comprises a refrigeration system and a refrigeration house control system, wherein:
the refrigerating system comprises a compressor, a condenser, a throttling device, a first air cooler and a second air cooler;
the refrigerant outlet of the compressor is connected with the refrigerant inlet of the condenser;
the refrigerant outlet of the condenser is connected with the refrigerant inlets of the first air cooler and the second air cooler through a throttling device;
the cold storage control system comprises a real-time cold storage temperature measuring module, a wind speed measuring module of a fan and a control unit;
wherein, the real-time measurement module of storehouse temperature includes a plurality of thermocouples, temperature recorder and the control unit, wherein: the thermocouple is used for measuring the temperature value in the refrigerator and then sending the temperature value to the temperature recorder;
the temperature recorder is connected with the thermocouples through signal wires and used for collecting temperature values measured by the thermocouples and sending the temperature values to the control unit;
the control unit is connected with the temperature recorder through a signal wire and is used for carrying out average operation on temperature values measured by the thermocouples and then storing the obtained average temperature as the real-time temperature of the refrigeration house;
the wind speed measuring module of the fan comprises a plurality of thermosensitive anemometers which are uniformly arranged at the air outlets of the first air cooler and the second air cooler;
the heat-sensitive anemoscope is connected with the control unit through a signal wire;
the control unit is used for respectively carrying out average calculation on the wind speeds of the first air cooler and the second air cooler obtained by measurement of the thermosensitive anemoscope, and correspondingly taking the obtained average wind speed values of the first air cooler and the second air cooler as the outlet wind speeds of the first air cooler and the second air cooler and storing the average wind speed values;
and the control unit is used for controlling the air volume of the first air cooler and the air volume of the second air cooler.
Wherein, a plurality of thermocouples are evenly arranged on the middle plane in the freezer.
Wherein, the temperature recorder is a paperless temperature recorder.
Wherein, in the freezer, still include goods, door, envelope and lighting apparatus.
Wherein, first air-cooler and second air-cooler are the frequency conversion air-cooler.
Wherein, the control unit specifically comprises the following control modes:
firstly, when refrigeration starts, every preset time period, a control unit measures the real-time temperature of a refrigeration house through a real-time measurement module of the temperature of the refrigeration house, and then the control unit calculates the difference value between the temperature value of the current time period and the set temperature value of the refrigeration house to obtain the relative temperature fluctuation value of the refrigeration house in the time period;
secondly, the control unit obtains that the wind speed corresponding to the relative reservoir temperature fluctuation value needs to be increased or decreased according to the relative reservoir temperature fluctuation value; when the temperature value of the time period is greater than the set temperature value of the refrigeration house, the wind speed is increased, otherwise, when the temperature value of the time period is less than the set temperature value of the refrigeration house, the wind speed is reduced;
thirdly, converting the wind speed value into frequency signals of a first air cooler and a second air cooler by a control unit, and controlling the target wind speeds of the first air cooler and the second air cooler;
fourthly, the control unit calculates the temperature fluctuation value in the cold storage in the current time period through the real-time measurement module of the temperature of the cold storage, and judges whether the temperature fluctuation value in the cold storage in the current time period is larger than the temperature fluctuation value in the cold storage in the previous time period or not;
if the temperature fluctuation value in the cold storage in the time period is larger than the temperature fluctuation value in the cold storage in the last time period, the control unit sends control signals to the first air cooler and the second air cooler to control the first air cooler and the second air cooler to increase the air volume; on the contrary, if the temperature fluctuation value in the cold storage in the time period is smaller than the temperature fluctuation value in the cold storage in the last time period, the control unit sends control signals to the first air cooler and the second air cooler to control the first air cooler and the second air cooler to reduce the air volume;
fifthly, calculating the difference value between the fluctuation value in the cold storage warehouse in the current time period and the temperature fluctuation value in the cold storage warehouse in the previous time period through the control unit;
if the difference value is smaller than the preset error value, keeping the air volume of the first air cooler and the air volume of the second air cooler unchanged, and if the difference value is larger than the preset error value, circularly performing the steps from the first step to the fifth step until the difference value is smaller than the preset error value.
Compared with the prior art, the intelligent control system for the refrigeration house according to the temperature fluctuation predicts the change trend of the internal load of the refrigeration house and the internal temperature of the refrigeration house by establishing a mathematical model, controls the variable-frequency air cooler of the refrigeration system, changes the refrigerating capacity to match with the internal load of the refrigeration house, avoids a passive adjustment mode based on an actual measured value of the temperature of the refrigeration house, can reduce the fluctuation of the internal temperature of the refrigeration house, improves the operation efficiency of the refrigeration system, reduces the overall energy consumption of the refrigeration house, and has great production practice significance.
Drawings
Fig. 1 is a schematic diagram of a connection structure of a refrigeration system in an intelligent control system of a refrigeration house according to temperature fluctuation, provided by the invention;
FIG. 2 is a control flow chart of the intelligent control system for the refrigeration house according to temperature fluctuation, provided by the invention;
FIG. 3 is a schematic diagram of control signals of the intelligent control system for the refrigeration storage according to temperature fluctuation, provided by the invention;
fig. 4 is a diagram of arrangement of thermocouples located on the central cross section of the refrigeration storage in the refrigeration storage intelligent control system according to temperature fluctuation provided by the invention;
fig. 5 is a diagram of arrangement of wind speed measuring points at an air outlet of a first air cooler (the arrangement of wind speed measuring points at an air outlet of a second air cooler is the same) in the intelligent control system of the refrigeration house according to temperature fluctuation provided by the invention.
In the figure: 1. the air conditioner comprises a compressor, a condenser, a throttling device, a first air cooler, a second air cooler and a compressor, wherein the compressor is 2;
6. goods 7, a door 8, a building enclosure 9, a refrigeration house control system 10, a real-time measurement module of the temperature of the refrigeration house 11 and lighting equipment,
Detailed Description
In order that those skilled in the art will better understand the technical solution of the present invention, the following detailed description of the present invention is provided in conjunction with the accompanying drawings and embodiments.
Referring to fig. 1 to 5, the present invention provides an intelligent control system for a cold storage according to temperature fluctuation, including a refrigeration system and a cold storage control system 9, wherein:
the refrigerating system comprises a compressor 1, a condenser 2, a throttling device 3, a first air cooler 4 and a second air cooler 5;
a refrigerant outlet of the compressor 1 is connected with a refrigerant inlet of the condenser 2;
the refrigerant outlet of the condenser 2 is connected to the refrigerant inlets of the first and second cooling fans 4 and 5 via a throttle device 3 (e.g., a throttle valve).
The refrigeration house control system 9 comprises a real-time storage temperature measuring module 10, a wind speed measuring module of a fan and a control unit;
wherein, the real-time measurement module 10 of storehouse temperature, including a plurality of thermocouples 12, temperature recorder and the control unit, wherein: the thermocouple 12 is used for measuring the temperature value in the refrigerator and then sending the temperature value to the temperature recorder;
the temperature recorder is connected with the thermocouples 12 through signal wires and used for collecting temperature values measured by the thermocouples and sending the temperature values to the control unit (specifically, a PLC processor);
the control unit is connected with the temperature recorder through a signal wire and is used for carrying out average operation on temperature values measured by the thermocouples 12 and then storing the obtained average temperature as the real-time temperature of the refrigeration house;
the wind speed measuring module of the fan comprises a plurality of thermosensitive anemometers 13 (for example, 4 wind speed measuring points, as shown in fig. 5) which are uniformly arranged at the air outlets 101 of the first air cooler 4 and the second air cooler 5;
the heat-sensitive anemoscope is connected with the control unit through a signal wire;
the control unit is used for respectively carrying out average calculation on the wind speeds of the first air cooler 4 and the second air cooler 5 obtained by measurement of the thermosensitive anemometer, and correspondingly taking the obtained average wind speed values of the first air cooler 4 and the second air cooler 5 as the outlet wind speeds of the first air cooler 4 and the second air cooler 5 and storing the average wind speed values;
it should be noted that, the air outlet air volume of the air cooler can be obtained by the air outlet air speed value of the air cooler through program operation, which specifically comprises the following steps: the air volume of the air cooler is equal to the product of the air speed V and the sectional area F of the air duct.
In the present invention, in a specific implementation, a plurality of thermocouples 12 are uniformly arranged on the middle plane (for example, 12 thermocouples, see fig. 4) inside the refrigerator 100.
In the present invention, the temperature recorder may be a paperless GP10 temperature recorder, for example.
In the present invention, in a specific implementation, the refrigerator 100 further includes a cargo 6, a door 7, a building envelope 8, and a lighting device 11.
In the invention, specifically, the first air cooler 4 and the second air cooler 5 are both frequency conversion air coolers, the two frequency conversion air coolers are connected with the control unit (PLC processor) through signal lines, and the air quantity of the first air cooler 4 and the air quantity of the second air cooler (namely, the refrigerating fans) are changed, so that the fluctuation in the refrigerator is reduced, and the refrigerating efficiency is improved.
In the present invention, in a specific implementation, the control unit is configured to control air volumes of the first air cooler 4 and the second air cooler 5.
It should be noted that, in the present invention, the control unit takes a PLC as a core, and is connected to the paperless GP10 temperature recorder of the real-time warehouse temperature measurement module, the thermal anemoscope of the fan wind speed measurement module, and the two variable frequency air coolers (i.e., the first air cooler 4 and the second air cooler 5) through signal lines, so as to complete the operation of the related temperature fluctuation value and the wind speed value, and realize the control of the wind volume of the variable frequency fan.
In the present invention, in a specific implementation, referring to fig. 2, the control unit specifically includes the following control modes:
firstly, when refrigeration starts, the control unit measures the real-time temperature of the refrigeration house through the real-time measurement module 10 of the temperature of the refrigeration house at intervals of a preset time period (namely, the time is delayed for preset time, for example, 1 minute), and then the control unit calculates the difference between the temperature value of the current time period (namely, the temperature value at the end moment of the time period) and the set temperature value of the refrigeration house (namely, the preset refrigeration temperature of the refrigeration house), so as to obtain the relative temperature fluctuation value of the refrigeration house in the time period;
secondly, the control unit obtains that the wind speed corresponding to the relative reservoir temperature fluctuation value needs to be increased or decreased according to the relative reservoir temperature fluctuation value; when the temperature value of the time period is greater than the set temperature value of the refrigeration house, the wind speed is increased, otherwise, when the temperature value of the time period is less than the set temperature value of the refrigeration house, the wind speed is reduced;
thirdly, converting the wind speed value into frequency signals of the first air cooler 4 and the second air cooler 5 by the control unit, and controlling the target wind speed of the first air cooler 4 and the target wind speed of the second air cooler 5;
fourthly, the control unit calculates the temperature fluctuation value in the refrigeration house (namely the temperature difference between the starting time and the ending time of the time period) of the current time period through the real-time measurement module 10 of the temperature of the refrigeration house, and judges whether the temperature fluctuation value in the refrigeration house of the current time period is larger than the temperature fluctuation value in the refrigeration house of the previous time period or not;
if the temperature fluctuation value in the cold storage in the time period is larger than the temperature fluctuation value in the cold storage in the last time period, the control unit sends control signals to the first air cooler 4 and the second air cooler 5 to control the first air cooler 4 and the second air cooler 5 to increase the air volume; on the contrary, if the temperature fluctuation value in the cold storage in the time period is smaller than the temperature fluctuation value in the cold storage in the previous time period, the control unit sends control signals to the first air cooler 4 and the second air cooler 5 to control the first air cooler 4 and the second air cooler 5 to reduce the air volume.
Fifthly, calculating the difference value between the fluctuation value in the cold storage warehouse in the current time period and the temperature fluctuation value in the cold storage warehouse in the previous time period through the control unit;
if the difference value is smaller than the preset error value, keeping the air volume of the first air cooler 4 and the air volume of the second air cooler 5 unchanged, and if the difference value is larger than the preset error value, circularly performing the steps from the first step to the fifth step until the difference value is smaller than the preset error value.
Therefore, based on the control working mode, the intelligent control system for the refrigeration house improves the passive adjustment mode based on the actual temperature measurement value of the refrigeration house, reduces the fluctuation of the internal temperature of the refrigeration house and improves the operation efficiency of the refrigeration system.
In order to clearly understand the technical solution of the present invention, the working principle of the present invention is described with reference to the specific embodiments.
According to the method, the change trend of the total load in the refrigeration house is identified and determined and the change trend of the temperature of the refrigeration house is predicted based on the real-time change record of the temperature in the refrigeration house. When the refrigeration system of the refrigeration house adopts a variable-frequency air cooler system, the control method realizes the adjustment and optimization of the refrigerating capacity and the running state of the refrigeration system by adjusting the variable-frequency air cooler.
For example: when a certain time period t1Temperature fluctuation is DeltaT1(measured temperature T at storage temperature)1-reservoir temperature setpoint T0) Delayed by a period t of equal interval2Temperature fluctuation is DeltaT2(measured temperature T at storage temperature)2-reservoir temperature setpoint T0) When Δ T is2>ΔT1The air speed of the air cooler needs to be increased, thereby increasing the load of the air cooler. On the contrary, the opposite is true when Δ T2＜ΔT1The air speed of the air cooler needs to be reduced, so that the load of the air cooler is reduced. When Δ T is 0, the loads are matched, and the load of the air cooler is kept unchanged.
Therefore, in the control system of the invention, the real-time temperature value in the refrigerator can be measured according to the thermocouple, the fluctuation value of the refrigerator temperature in the current time interval is calculated, and compared with the fluctuation value of the refrigerator temperature in the previous time interval, the frequency of the variable frequency fan is adjusted through the control unit (namely, the PLC processor), and the load of the air cooler is changed correspondingly.
The intelligent control system for the refrigeration house according to the temperature fluctuation, provided by the invention, can change the refrigerating capacity by controlling the air quantity of the variable frequency fan, avoid a passive regulation mode based on an actual measured value of the temperature of the refrigeration house, reduce the fluctuation of the internal temperature of the refrigeration house and improve the operation efficiency of the refrigerating system.
In summary, compared with the prior art, the intelligent control system for the refrigeration house according to the temperature fluctuation, provided by the invention, predicts the change trend of the internal load of the refrigeration house and the internal temperature of the refrigeration house by establishing a mathematical model, controls the variable frequency air cooler of the refrigeration system, changes the refrigerating capacity to match with the internal load of the refrigeration house, avoids a passive adjustment mode based on an actual measured value of the temperature of the refrigeration house, can reduce the fluctuation of the internal temperature of the refrigeration house, improves the operation efficiency of the refrigeration system, reduces the overall energy consumption of the refrigeration house, and has great production practice significance.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (6)
1. The utility model provides a according to undulant freezer intelligence control system of temperature which characterized in that includes refrigerating system and freezer control system (9), wherein:
the refrigeration system comprises a compressor (1), a condenser (2), a throttling device (3), a first air cooler (4) and a second air cooler (5);
the refrigerant outlet of the compressor (1) is connected with the refrigerant inlet of the condenser (2);
a refrigerant outlet of the condenser (2) is connected with refrigerant inlets of the first air cooler (4) and the second air cooler (5) through a throttling device (3);
the refrigeration house control system (9) comprises a real-time storage temperature measuring module (10), a wind speed measuring module of the fan and a control unit;
wherein, the real-time measuring module (10) of the reservoir temperature comprises a plurality of thermocouples (12), a temperature recorder and a control unit,
wherein: the thermocouple (12) is used for measuring the temperature value in the refrigerator and then sending the temperature value to the temperature recorder;
the temperature recorder is connected with the thermocouples (12) through signal wires and used for collecting temperature values measured by the thermocouples and sending the temperature values to the control unit;
the control unit is connected with the temperature recorder through a signal wire and is used for carrying out average operation on temperature values measured by the thermocouples (12), and then taking the obtained average temperature as the real-time temperature of the refrigeration house and storing the temperature;
the wind speed measuring module of the fan comprises a plurality of thermosensitive anemometers (13) which are uniformly arranged at the air outlets (101) of the first air cooler (4) and the second air cooler (5);
the heat-sensitive anemoscope is connected with the control unit through a signal wire;
the control unit is used for respectively carrying out average calculation on the wind speeds of the first air cooler (4) and the second air cooler (5) obtained by measurement of the thermosensitive anemoscope, and correspondingly taking the obtained average wind speed values of the first air cooler (4) and the second air cooler (5) as outlet wind speeds of the first air cooler (4) and the second air cooler (5) and storing the outlet wind speeds;
and the control unit is used for controlling the air volume of the first air cooler (4) and the second air cooler (5).
2. The intelligent control system of a refrigerator according to temperature fluctuation according to claim 1, wherein the plurality of thermocouples (12) are uniformly arranged on the middle plane inside the refrigerator (100).
3. The intelligent control system for a cold storage according to temperature fluctuation according to claim 1, wherein the temperature recorder is a paperless temperature recorder.
4. The intelligent control system of the refrigeration house according to the temperature fluctuation according to claim 1, wherein the refrigeration house (100) further comprises goods (6), a door (7), a building enclosure (8) and a lighting device (11).
5. The intelligent control system of a freezer according to temperature fluctuation of claim 1 characterized in that the first air cooler (4) and the second air cooler (5) are frequency conversion air coolers.
6. The intelligent refrigerator control system according to temperature fluctuation according to any one of claims 1 to 5, wherein the control unit specifically comprises the following control modes:
firstly, when refrigeration starts, every preset time period, the control unit measures the real-time temperature of the refrigeration house through a real-time measurement module (10) of the temperature of the refrigeration house, and then the control unit calculates the difference value between the temperature value of the current time period and the set temperature value of the refrigeration house to obtain the relative temperature fluctuation value of the refrigeration house in the time period;
secondly, the control unit obtains that the wind speed corresponding to the relative reservoir temperature fluctuation value needs to be increased or decreased according to the relative reservoir temperature fluctuation value; when the temperature value of the time period is greater than the set temperature value of the refrigeration house, the wind speed is increased, otherwise, when the temperature value of the time period is less than the set temperature value of the refrigeration house, the wind speed is reduced;
thirdly, converting the wind speed value into frequency signals of the first air cooler (4) and the second air cooler (5) by the control unit, and controlling the target wind speeds of the first air cooler (4) and the second air cooler (5);
fourthly, the control unit calculates the temperature fluctuation value in the cold storage in the current time period through a real-time measurement module (10) of the temperature of the cold storage, and judges whether the temperature fluctuation value in the cold storage in the current time period is larger than the temperature fluctuation value in the cold storage in the previous time period or not;
if the temperature fluctuation value in the refrigeration house in the time period is larger than the temperature fluctuation value in the refrigeration house in the last time period, the control unit sends control signals to the first air cooler (4) and the second air cooler (5) to control the first air cooler (4) and the second air cooler (5) to increase the air volume; on the contrary, if the temperature fluctuation value in the refrigeration house in the time period is smaller than the temperature fluctuation value in the refrigeration house in the previous time period, the control unit sends control signals to the first air cooler (4) and the second air cooler (5) to control the first air cooler (4) and the second air cooler (5) to reduce the air volume;
fifthly, calculating the difference value between the fluctuation value in the cold storage warehouse in the current time period and the temperature fluctuation value in the cold storage warehouse in the previous time period through the control unit;
if the difference value is smaller than the preset error value, keeping the air volume of the first air cooler (4) and the air volume of the second air cooler (5) unchanged, and if the difference value is larger than the preset error value, circularly performing the steps from the first step to the fifth step until the difference value is smaller than the preset error value.
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| CN202010047819.9A CN111174515A (en) | 2020-01-16 | 2020-01-16 | Intelligent control system for refrigeration house according to temperature fluctuation |
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| CN202010047819.9A CN111174515A (en) | 2020-01-16 | 2020-01-16 | Intelligent control system for refrigeration house according to temperature fluctuation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111856930A (en) * | 2020-06-16 | 2020-10-30 | 北京农业信息技术研究中心 | Cold chain environment and fruit temperature and humidity coupling sensing and controlling method and system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101476803A (en) * | 2009-01-22 | 2009-07-08 | 上海爱控自动化设备有限公司 | Energy-saving refrigeration control system and method thereof |
| CN102506536A (en) * | 2011-09-30 | 2012-06-20 | 合肥美的荣事达电冰箱有限公司 | Air indirect cooling refrigerator and temperature control method thereof |
| CN103086097A (en) * | 2011-11-02 | 2013-05-08 | 马士基集装箱工业公司 | Method for operating a refrigeration system for a cargo container |
| CN104215013A (en) * | 2014-09-03 | 2014-12-17 | 四川长虹电器股份有限公司 | Modular combined refrigerator and control method thereof |
| CN105627688A (en) * | 2016-01-05 | 2016-06-01 | 珠海美固电子有限公司 | Refrigeration control method and system of thermoelectric container |
-
2020
- 2020-01-16 CN CN202010047819.9A patent/CN111174515A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101476803A (en) * | 2009-01-22 | 2009-07-08 | 上海爱控自动化设备有限公司 | Energy-saving refrigeration control system and method thereof |
| CN102506536A (en) * | 2011-09-30 | 2012-06-20 | 合肥美的荣事达电冰箱有限公司 | Air indirect cooling refrigerator and temperature control method thereof |
| CN103086097A (en) * | 2011-11-02 | 2013-05-08 | 马士基集装箱工业公司 | Method for operating a refrigeration system for a cargo container |
| CN104215013A (en) * | 2014-09-03 | 2014-12-17 | 四川长虹电器股份有限公司 | Modular combined refrigerator and control method thereof |
| CN105627688A (en) * | 2016-01-05 | 2016-06-01 | 珠海美固电子有限公司 | Refrigeration control method and system of thermoelectric container |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111856930A (en) * | 2020-06-16 | 2020-10-30 | 北京农业信息技术研究中心 | Cold chain environment and fruit temperature and humidity coupling sensing and controlling method and system |
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