CN112577246A - Temperature control system and method for multi-cell refrigerator, micro control unit and storage medium - Google Patents

Temperature control system and method for multi-cell refrigerator, micro control unit and storage medium Download PDF

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Publication number
CN112577246A
CN112577246A CN202011314741.9A CN202011314741A CN112577246A CN 112577246 A CN112577246 A CN 112577246A CN 202011314741 A CN202011314741 A CN 202011314741A CN 112577246 A CN112577246 A CN 112577246A
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China
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temperature
refrigerator
grid
analog switch
control unit
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CN202011314741.9A
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Chinese (zh)
Inventor
张�林
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Shenzhen Zhilai Science and Technology Co Ltd
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Shenzhen Zhilai Science and Technology Co Ltd
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Priority to CN202011314741.9A priority Critical patent/CN112577246A/en
Publication of CN112577246A publication Critical patent/CN112577246A/en
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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
    • F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
    • F25D11/02—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures
    • 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
    • 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
    • F25D2500/00—Problems to be solved
    • F25D2500/06—Stock management
    • 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
    • F25D2600/00—Control issues
    • F25D2600/06—Controlling according to a predetermined profile
    • 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
    • F25D2700/00—Means for sensing or measuring; Sensors therefor
    • F25D2700/12—Sensors measuring the inside temperature

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

Abstract

The invention discloses a temperature control system of a multi-grid refrigerator, which is applied to the technical field of refrigeration control and used for solving the technical problem of larger overall power consumption of the refrigerator. The invention provides a temperature control system of a multi-grid refrigerator, which comprises refrigeration equipment provided with a refrigeration pipeline, a micro control unit, an air-cooling shutter, a first analog switch selection assembly, a second analog switch selection assembly, article detection equipment and a temperature sensor, wherein the first analog switch selection assembly is connected with the refrigeration pipeline; every check mouth of this freezer all is equipped with this article check out test set and temperature sensor, this first analog switch selection subassembly is connected with each this article check out test set and this little the control unit electricity respectively, this second analog switch selection subassembly is connected with each this temperature sensor and this little the control unit electricity respectively, this little the control unit is connected with this refrigeration plant and this air cooling shutter electricity respectively, the blade of this air cooling shutter corresponds the setting with each check mouth of this freezer, the blade of this air cooling shutter is used for opening or closing the passageway that corresponds between check mouth and this refrigeration pipeline.

Description

Temperature control system and method for multi-cell refrigerator, micro control unit and storage medium
Technical Field
The invention relates to the technical field of refrigeration control, in particular to a temperature control system and method of a multi-compartment refrigerator, a micro control unit and a storage medium.
Background
At present, in order to improve the automatic control precision of the lattice temperature, a scheme of double evaporators or multiple evaporators is adopted in most of multi-row independent lattice freezers on the market, namely, the whole freezer adopts a group of compressors and condensers, and then the number of the evaporators is matched according to the number of the lattices of the freezer. Generally, a group of evaporators controls the circulation of cold air in one or more rows of grids, the side wall and the rear wall of each grid are provided with a fixed cold air circulation air inlet and an air outlet, and under the action of a fan group, the cold air can enter each grid through the pressure of a circulation channel, so that the problems of poor refrigeration effect and large temperature difference of multi-row refrigerators can be solved to a certain extent. However, one group of evaporators generally controls the refrigeration of 6-12 groups of independent grids at the same time, and because the heat preservation effect of each grid is different, if 1-2 groups of independent grids have heat preservation problems, the overall refrigeration effect of other grids can be affected, and cold air waste can also be caused.
In order to reduce the overall power consumption of the refrigerator, the technical means adopted at present are all to make an effort on the heat preservation effect of the refrigerator grids, but the principle is that a group of evaporators control the cold air circulation of one or more rows of grids, when the temperature of the grids in one row of grids cannot meet the expectation, strong electric equipment of the refrigerator, such as a compressor, a condenser and an evaporator, can be always in a working state, the electrifying time of power consumption equipment is long, and the overall power consumption of the refrigerator is large.
Disclosure of Invention
The embodiment of the invention provides a temperature control system, a temperature control method, a micro control unit and a storage medium of a multi-grid refrigerator, and aims to solve the technical problem that the overall power consumption of the refrigerator is large.
The invention provides a temperature control system of a multi-grid refrigerator, which comprises refrigeration equipment provided with a refrigeration pipeline, a micro control unit, an air-cooled shutter, a first analog switch selection assembly, a second analog switch selection assembly, article detection equipment and a temperature sensor, wherein the micro control unit is connected with the air-cooled shutter;
every check mouth of freezer all is equipped with article check out test set and temperature sensor, first analog switch selects the subassembly respectively with each article check out test set with little the control unit electricity is connected, second analog switch selects the subassembly respectively with each temperature sensor with little the control unit electricity is connected, little the control unit respectively with refrigeration plant with air cooling shutter electricity is connected, the blade of air cooling shutter with each check mouth of freezer corresponds the setting, the blade of air cooling shutter be used for opening or close correspond check mouth with passageway between the refrigeration pipeline.
Another aspect of the present invention provides a method for controlling temperature of a multi-compartment refrigerator, the method being applied to a micro control unit, the method comprising:
receiving an article detection signal sent by article detection equipment, wherein the article detection equipment is correspondingly arranged on each cell of the refrigerator;
determining the lattice stored with the article according to the article detection signal;
acquiring the temperature in a corresponding grid detected by a temperature sensor in the grid in which the articles are stored;
when the temperature of at least one grid detected by the temperature sensor is greater than a first preset value, controlling the refrigeration equipment to start, and controlling the blades in the air-cooling shutter corresponding to the grid with the temperature greater than the first preset value to open;
when the temperature of the corresponding grid opening detected by the temperature sensor is smaller than a second preset value, controlling the blades in the air-cooled shutter corresponding to the grid opening with the temperature smaller than the second preset value to close;
and when the temperatures of the corresponding grids detected by the temperature sensors are all smaller than the second preset value, controlling the refrigeration equipment to be closed.
The invention also provides a micro-control unit which comprises a memory, a processor and a computer program which is stored in the memory and can run on the processor, wherein the processor executes the computer program to realize the steps of the temperature control method of the multi-cell refrigerator.
The invention also provides a computer readable storage medium, which stores a computer program, and the computer program is executed by a processor to realize the steps of the temperature control method of the multi-compartment refrigerator.
According to the temperature control system, the method, the micro control unit and the storage medium of the multi-cell refrigerator provided by the invention, each cell of the refrigerator is provided with the article detection device and the temperature sensor, so that the single chip microcomputer can collect the storage condition of each cell and the temperature condition of the storage cell, each cell is correspondingly provided with the blade of the air cooling shutter, the blade of the air cooling shutter can be used for independently controlling the channel between the corresponding cell and the cold pipeline, when a certain cell needs to be refrigerated, the blade corresponding to the air cooling shutter is controlled to be opened, the ventilation channel between the cell and the cold pipeline is opened, when a certain cell does not need to be refrigerated, the blade corresponding to the air cooling shutter is controlled to be closed, and the ventilation channel between the cell and the cold pipeline is closed, so that the purpose of saving energy consumption is achieved. The invention also provides a temperature control method of the multi-cell refrigerator applied to a micro control unit of the temperature control system of the multi-cell refrigerator, which realizes the refrigeration control of only the storage cell openings through the article detection equipment and the temperature sensor, and is characterized in that when the temperature of at least one cell opening detected by the temperature sensor is greater than a first preset value, the refrigeration equipment is controlled to start, and the blades corresponding to the cell openings with the temperature greater than the first preset value in the air-cooled louver are controlled to open, so that when the refrigerator is just started, the system only refrigerates the storage cell openings, and the channels between each cell opening and the refrigeration pipeline are independently controlled through the blades of the air-cooled louver. When the temperature that corresponds the lattice that temperature sensor detected is less than the second default, control in the air cooling shutter blade that corresponds with the lattice that the temperature is less than the second default is closed for when the refrigeration temperature of certain lattice in the freezer reaches standard, can close the passageway between the independent shutoff correspondence lattice and the refrigeration pipeline through the corresponding blade of control air cooling shutter, realize cold-stored function through the heat preservation performance of freezer lattice from the area, further reduce the power consumption. And set up to work as the temperature that corresponds the bin that temperature sensor detected all is less than during the second default, control refrigeration plant closes for when the refrigeration temperature of all storing bins all reaches standard, in time close refrigeration plant, in order to reach the purpose that realizes the refrigeration effect of each storing bin of freezer through the minimum energy consumption.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive labor.
Fig. 1 is a block diagram of a temperature control system for a multi-compartment cooler in accordance with an embodiment of the present invention;
fig. 2 is a flow chart of a method for controlling the temperature of a multi-compartment freezer in accordance with one embodiment of the present invention;
fig. 3 is a flow chart of a method for controlling the temperature of a multi-compartment refrigerator in accordance with another embodiment of the present invention;
FIG. 4 is a flow chart of acquiring a corresponding cell temperature via a temperature sensor in an embodiment of the present invention;
FIG. 5 is a flow chart illustrating a process of determining whether a corresponding cell stores a substance by a pressure sensor according to an embodiment of the present invention;
fig. 6 is a flow chart of a usage scenario of a method of temperature control for a multi-compartment cooler in an embodiment of the present invention;
FIG. 7 is a diagram of a micro control unit according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a block diagram of a temperature control system of a multi-well freezer according to an embodiment of the present invention, and the temperature control method of the multi-well freezer provided in the present application can be applied to the micro control unit shown in fig. 1, and the temperature control system of the multi-well freezer includes a refrigeration device provided with a refrigeration pipeline, as shown in fig. 1, a micro control unit, an air-cooling louver, a first analog switch selection component, a second analog switch selection component, an article detection device, and a temperature sensor. In one embodiment, the first analog switch selection component is obtained by cascading a plurality of first analog switches, and the second analog switch selection component is obtained by cascading a plurality of second analog switches.
Each cell of the refrigerator is provided with the article detection equipment and the temperature sensor, as shown in figure 1, the serial numbers (1-n) of the article detection equipment and the serial numbers (1-n) of the temperature sensors are respectively in one-to-one correspondence with the corresponding cells, the article detection equipment is used for detecting the storage condition of the corresponding cells and sending the detection information to the micro control unit, the temperature sensor is used for detecting the temperature of the corresponding cell and sending the detected temperature information to the micro control unit, the first analog switch selection component is respectively electrically connected with each article detection equipment and the micro control unit and is used for accessing the corresponding article detection equipment according to the address selected by the micro control unit so as to receive the storage condition of the corresponding cell, the second analog switch selection component is respectively electrically connected with each temperature sensor and the micro control unit, this second analog switch selection module is used for the temperature sensor that the address access that selects according to little the control unit corresponds to the temperature value of receiving corresponding lattice opening, little the control unit respectively with refrigeration plant with the air cooling shutter electricity is connected, the blade of air cooling shutter with each lattice opening of freezer corresponds the setting, the blade of air cooling shutter is opened or is closed and can be received the control of singlechip alone, the blade of air cooling shutter be used for opening or close correspond the lattice opening with passageway between the refrigeration pipeline.
In one embodiment, the first analog switch and the second analog switch each select an eight-out-of-one type of analog switch. The number of the article detection equipment and the temperature sensors is the same as that of the grids of the refrigerator, and the number of the first analog switches is the same as that of the second analog switches.
Further, how many first analog switches are specifically selected by the first analog switch selection component to be cascaded can be determined according to the number of the grids of the refrigerator and the model of the first analog switch. If the first analog switch is an eight-from-one analog switch and the freezer comprises 30 grids, at least four first analog switches are cascaded to obtain the first analog switch selection assembly.
Because the freezer check mouth is more, and little the control unit's pin quantity is limited, so this embodiment has adopted analog switch selection device to realize the temperature collection of many check mouths and the collection of storing state through cascaded mode, enlarges the quantity that little the control unit inserts article check out test set and this temperature sensor through cascaded mode to when making the freezer check mouth more, also can gather the temperature of each check mouth of freezer in proper order and gather the storing state.
Further, the first analog switch and the second analog switch are both 74HC4051D in model.
In one embodiment, the article detection device comprises a pressure sensor, the pressure sensor is arranged on each cell of the refrigerator, and the pressure sensors are respectively electrically connected with the first analog switch selection component.
The temperature control system of many check mouths freezer that this embodiment provided all sets up article check out test set and temperature sensor through every check mouth at the freezer, make the storing condition of every check mouth and the temperature condition of storing check mouth can be gathered to the singlechip, and through the blade that sets up the air cooling shutter to every check mouth correspondence, make the blade independent control that can pass through the air cooling shutter correspond the passageway between check mouth and the cold pipeline, when needs refrigerate to certain check mouth, the blade that this air cooling shutter corresponds is controlled and is opened, open the passageway of taking a breath between this check mouth and the cold pipeline, when need not refrigerate to certain check mouth, the blade that this air cooling shutter corresponds is controlled and is closed, close the passageway of taking a breath between this check mouth and the cold pipeline, in order to reach and practice thrift the energy consumption purpose.
Fig. 2 is a flowchart of a temperature control method of a multi-compartment refrigerator according to an embodiment of the present invention, and in an embodiment, as shown in fig. 2, a temperature control method of a multi-compartment refrigerator is provided, which is described by taking the micro control unit in fig. 1 as an example, and includes the following steps S101 to S106.
S101, receiving an article detection signal sent by article detection equipment, wherein the article detection equipment is correspondingly arranged on each cell of the refrigerator.
In one embodiment, the article detection device includes a pressure sensor, and the step of receiving the article detection signal transmitted by the article detection device includes:
receiving a pressure value in a corresponding grid sent by the pressure sensor;
the step of determining the bin storing the article according to the article detection signal includes:
and when the pressure value is larger than the preset pressure value, judging that the articles are stored in the cell corresponding to the pressure sensor, otherwise, judging that the articles are not stored in the cell corresponding to the pressure sensor.
Further, the preset pressure value may be a sum of the no-object state pressure value and a set threshold pressure value.
In other embodiments, this may also be an infrared sensor or an ultrasonic sensor, etc.
And S102, determining the grid storing the article according to the article detection signal.
Fig. 5 is a flowchart of determining whether the corresponding compartment stores articles by using the pressure sensor according to an embodiment of the present invention, and as shown in fig. 5, the article detection signal may be received by setting a period of the first analog switch being connected to the corresponding article detection device, where the timing time in fig. 5 is, for example, 1 second.
As shown in fig. 5, the step of determining the bin storing the article according to the article detection signal further includes the following steps S501 to S507.
S501, when the timing time is 1 second, jumping to the step S502;
s502, setting a second analog switch address to select the pressure sensor with the No. 1 grid to be connected to the AD interface of the single chip microcomputer, and jumping to the step S503;
s503, the single chip microcomputer carries out AD digital-analog signal acquisition on the voltage input by the pressure sensor, obtains the pressure value of the current cell, and skips to the step S504;
s504, judging whether the pressure value is larger than a preset pressure value, if so, jumping to S506, otherwise, jumping to S505;
s505, judging that no storage article exists in the corresponding grid;
s506, judging that articles are stored in the corresponding grid, and jumping to the step S507;
and S507, circulating the steps from S501 to S506, and sequentially judging the storage state of each cell.
S103, acquiring the temperature in the corresponding grid detected by the temperature sensor in the grid in which the articles are stored.
Fig. 4 is a flowchart of acquiring the temperature of the corresponding cell by the temperature sensor according to an embodiment of the present invention, and as shown in fig. 4, the temperature acquired by the temperature sensor may be received by setting a period for the second analog switch to be switched in the corresponding temperature sensor, and the timing time in fig. 4 is, for example, 1 second. The step of acquiring the temperature in the corresponding compartment detected by the temperature sensor located in the compartment in which the article is stored includes the following steps S401 to S405.
S401, when the timing time is 1 second, jumping to the step S402;
s402, setting a first analog switch address to select the temperature sensor with the No. 1 grid to be connected to the AD interface of the single chip microcomputer, and jumping to the step S403;
s403, performing AD acquisition on the voltage input by the temperature sensor through the single chip microcomputer, and skipping to the step S404;
s404, acquiring the temperature of the current grid according to an Analog Digital (AD) signal, and jumping to the step S405;
s405, circulating the steps S401 to S404, and sequentially collecting the temperature value of each storage cell.
And S104, when the temperature of at least one cell detected by the temperature sensor is greater than a first preset value, controlling the refrigeration equipment to start, and controlling the opening of the blade corresponding to the cell with the temperature greater than the first preset value in the air-cooling shutter.
In this embodiment, the first preset value may be set manually, the first preset value represents a threshold for activating the intelligent function, and the first preset value may be set to 5 ℃, 10 ℃, or the like, for example.
And controlling the blades corresponding to the grids with the temperature higher than the first preset value in the air-cooling shutter to be opened so that the refrigerating equipment can only refrigerate the grids with the overhigh temperature independently, and the control precision of the refrigerator grids is higher.
And S105, when the temperature of the corresponding grid opening detected by the temperature sensor is less than a second preset value, controlling the blades of the air-cooling shutter corresponding to the grid opening with the temperature less than the second preset value to close.
In this embodiment, the second preset value may also be set manually, the first preset value indicating a temperature threshold at which no further cooling is required, the second preset value may be set to-5 ℃, -10 ℃, etc., for example.
When the temperature of the corresponding grid detected by the temperature sensor is smaller than the second preset value, the blades corresponding to the grid with the temperature smaller than the second preset value in the air-cooled shutter are controlled to be closed, the channel between the corresponding grid and the refrigerating pipeline can be cut off, the grid with the temperature meeting the requirement is not ventilated, and the cold storage effect is ensured only through the heat preservation function of the grid, so that the purpose of reducing the power consumption is achieved.
S106, when the temperatures of the corresponding grids detected by the temperature sensors are all smaller than the second preset value, the refrigeration equipment is controlled to be closed.
In this embodiment, when the temperatures of the corresponding compartments detected by the temperature sensors are all less than the second preset value, it indicates that the refrigerating temperatures of the storage compartments of the refrigerator have reached the standard, and turning off the refrigeration equipment can shorten the power-on time of strong electric equipment such as a compressor, a condenser and an evaporator, thereby further reducing power consumption.
The temperature control method of the multi-cell refrigerator applied to the micro control unit of the temperature control system of the multi-cell refrigerator provided by the embodiment realizes refrigeration control only on the storage cell through the article detection equipment and the temperature sensor, and when the temperature of at least one cell detected by the temperature sensor is greater than a first preset value, the refrigeration equipment is controlled to start, and blades corresponding to the cells with the temperature greater than the first preset value in the air-cooled louver are controlled to open, so that when the refrigerator is just started, the system only refrigerates the storage cell and independently controls channels between the cells and the refrigeration pipeline through the blades of the air-cooled louver. When the temperature that corresponds the lattice that temperature sensor detected is less than the second default, control in the air cooling shutter blade that corresponds with the lattice that the temperature is less than the second default is closed for when the refrigeration temperature of certain lattice in the freezer reaches standard, can close the passageway between the independent shutoff correspondence lattice and the refrigeration pipeline through the corresponding blade of control air cooling shutter, realize cold-stored function through the heat preservation performance of freezer lattice from the area, further reduce the power consumption. And set up to work as the temperature that corresponds the bin that temperature sensor detected all is less than during the second default, control refrigeration plant closes for when the refrigeration temperature of all storing bins all reaches standard, in time close refrigeration plant, in order to reach the purpose that realizes the refrigeration effect of each storing bin of freezer through the minimum energy consumption.
Fig. 3 is a flowchart of a temperature control method of a multi-compartment refrigerator according to another embodiment of the present invention, and the temperature control method of the multi-compartment refrigerator proposed in this embodiment further includes the following steps S301 to S303 based on the steps S101 to S106.
S301, obtain the temperature in the corresponding check that this temperature sensor detected, all correspond in each check of this freezer and be equipped with this temperature sensor.
In one embodiment, the principle of obtaining the temperature in the corresponding cell detected by the temperature sensor in this step may be described with reference to the above steps S401 to S405 in fig. 4, and the temperature value of each cell may be sequentially collected. The difference with the above-mentioned embodiment lies in that the above-mentioned embodiment only collects the temperature of storing check mouth, and this embodiment needs to collect the temperature in each check mouth through temperature sensor to judge whether the heat preservation function of corresponding check mouth is normal.
S302, when the minimum value of the detected temperature is larger than a third preset value, judging that the heat preservation of the grid corresponding to the temperature sensor is abnormal.
In one embodiment, the temperature of each cell collected in this embodiment may be collected when the corresponding cell is in a storage state, or may be collected in an idle state.
It can be understood that the third preset value can also be manually set, the setting space of the third preset value can refer to the range of the first preset value and the second preset value, for example, the standard refrigerating temperature of the freezer compartment is-5 ℃ to 10 ℃, the third preset value can be a value between the first preset value and the second preset value, for example, 0 ℃, which indicates that no matter how long the refrigeration equipment is started, if the lowest temperature of the compartment can only reach 0 ℃ under the condition that the compartment and the cold air duct are opened, the heat preservation function of the compartment is abnormal.
And S303, controlling the blades corresponding to the abnormal heat preservation grids in the air-cooling shutter to be closed all the time.
The embodiment is through the blade that corresponds with this heat preservation unusual bin in the control air cooling shutter close all the time in order to ensure that the passageway between the unusual bin of heat preservation and the refrigeration pipeline is turn-OFF all the time, further avoids the waste of air conditioning, reduces the refrigeration consumption.
In one embodiment, the method for controlling the temperature of a multi-compartment refrigerator further comprises:
acquiring the unique identifier of the lattice with abnormal heat preservation;
and sending out a heat preservation function abnormity prompt aiming at the unique identifier of the abnormal heat preservation grid.
In one embodiment, the unique identifier of the shelf may be a shelf number of the freezer shelf, and the manner of sending the warming function abnormality alert for the unique identifier of the shelf with the warming abnormality may be: and controlling a display screen of the refrigerator to display the lattice number of the refrigerator lattice with abnormal heat preservation, and prompting that the lattice heat preservation function corresponding to the lattice number is abnormal. Can avoid the user to use this bin mouth storage to need cold-stored article, can avoid on the one hand that cold-stored temperature is not up to standard to lead to user's article to take place losses such as rotten, on the other hand guarantees that the passageway between the unusual bin mouth that keeps warm and the refrigeration pipeline is turn-off all the time, further avoids air conditioning extravagant, reduces the refrigeration consumption.
Fig. 6 is a flowchart illustrating a usage scenario of a temperature control method of a multi-compartment refrigerator according to an embodiment of the present invention, and a usage scenario of the temperature control method of the multi-compartment refrigerator according to an embodiment of the present invention is described in detail below with reference to fig. 6, as shown in fig. 6, the temperature control method of the multi-compartment refrigerator includes the following steps S601 to S611.
S601, the central processing unit of the single chip microcomputer performs primary temperature judgment on all the object grids at fixed time for 1 second.
S602, if the temperature of any grid is greater than a first preset value, executing the steps S603 and S605; if not, go to step S606.
S603, the single chip microcomputer central processing unit judges whether the refrigeration equipment including the compressor, the condenser, the evaporator and the cold air circulation channel is opened or not, and if the state is the opening state, the step S605 is executed; if not, go to step S604.
S604, mainly completing the following work:
A. opening all the cold air circulation inlet channels with the object grids, the temperature of which exceeds the set upper limit value of the refrigeration temperature, and closing the cold air circulation inlet channels without the object grids;
B. immediately turning on the condenser;
C. turning on the compressor for a delay of T1(0S < T1< 30S);
D. the evaporator was turned on for a delay of T2(30S < T2< 90S).
And S605, controlling the opening of the blades corresponding to the grids with the temperature higher than the first preset value in the air-cooling shutter.
S606, the central processor of the single chip microcomputer judges whether the temperature of the object lattice is lower than the limit of the set refrigeration temperature, if so, the step S350 is executed, and if not, the step S370 is executed
S350: the central processor of the single chip microcomputer judges that the temperature of the object cell is smaller than a second preset value, if so, the step S607 is skipped to, whether the cold air circulation inlet and outlet channel of the current cell is in a closed state is detected, and if not, the step S609 is skipped to.
S607, detecting whether the cold air circulation inlet and outlet channel of the current grid is in a closed state, if so, jumping to the step S609, otherwise, jumping to the step S608.
And S608, closing the cold air circulation inlet channel with the object lattice with the temperature lower than the set lower limit value of the refrigerating temperature by the singlechip central processing unit, and controlling the blades of the corresponding lattice in the air-cooling shutter to be closed so as to close the cold air circulation inlet and outlet channel of the current lattice, wherein other cold air circulation inlet and outlet channels with the object lattice with the temperature not lower than the set lower limit value of the refrigerating temperature are continuously kept open.
And S609, the central processing unit of the single chip microcomputer judges whether the temperatures of all the object grid openings are smaller than a second preset value, if so, the step S610 is executed, and if not, the step S601 is executed in a returning mode.
S610, after the single chip microcomputer central processing unit detects that the temperatures of all the storage compartments are smaller than the second preset value, the working state of the current refrigeration equipment (including a compressor, a condenser and an evaporator) is judged, if the working state is closed, the step S601 is executed in a returning mode, and if the working state is opened, the step S611 is executed.
S611, the following steps are mainly realized:
A. immediately shutting down the compressor;
B. delay T3(0S < T3<60S) turns off the evaporator;
D. time delay T4(60S < T3<120S) seconds turns off the condenser;
E. after S611 is executed, the process returns to step S601.
In the embodiment, a group of temperature measuring temperature sensors are independently installed in each grid, and the cold air circulation inlet and outlet channel fixed on the side wall and the rear wall of the original grid is changed into the cold air circulation inlet and outlet channel automatically controlled by software. The temperature sensor is used for detecting the current temperature of the cell in real time, all the cold air circulation inlet and outlet channels of the object cell are in an open state at the starting stage of refrigeration, the cell starts to refrigerate, if the temperature of the cell is lower than the set lower limit value of the refrigeration temperature, the current cold air circulation inlet and outlet channel of the cell is automatically closed, other cold air circulation inlet and outlet channels of the cell which are not lower than the set lower limit value of the refrigeration temperature are continuously opened until all the temperatures of the cell are lower than the set lower limit value of the refrigeration temperature, and then the refrigeration equipment is closed to stop refrigeration. Therefore, the problem that the actual temperature of the grid is greatly deviated from the expected set refrigerating temperature can be relieved to a certain extent. This embodiment is through installing article check out test set at every bin, can real time monitoring all bin's article state, then through software self-closing no-material bin air conditioning circulation access way, only refrigerates to having the bin, improves other refrigeration speed that have the bin, has reduced the circular telegram time of freezer forceful electric power equipment like compressor, condenser and evaporimeter. Thereby reducing the overall power consumption of the freezer.
It should be understood that, the sequence numbers of the steps in the foregoing embodiments do not imply an execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present invention.
In one embodiment, a micro control unit is provided, which may be a single chip microcomputer, and the internal structure diagram of the micro control unit may be as shown in fig. 7. The micro control unit comprises a processor, a memory, a network interface and a database which are connected through a system bus. Wherein the processor of the micro control unit is used to provide computational and control capabilities. The memory of the micro control unit comprises a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program, and a database. The internal memory provides an environment for the operation of an operating system and computer programs in the non-volatile storage medium. The database of the micro-control unit is used for storing data related to a temperature control method of the multi-compartment refrigerator. The network interface of the micro control unit is used for connecting and communicating with an external terminal through a network. The computer program is executed by a processor to implement a method of temperature control for a multi-compartment cooler.
In one embodiment, a micro-control unit is provided, comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor executes the computer program to implement the steps of the method for controlling temperature of a multi-compartment refrigerator according to the above embodiments, such as the steps 101 to 106 shown in fig. 2 and other extensions of the method and related steps. To avoid repetition, further description is omitted here.
The Processor may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, discrete hardware component, etc. The general purpose processor may be a microprocessor or the processor may be any conventional processor or the like which is the control center for the computer device and which connects the various parts of the overall computer device using various interfaces and lines.
The memory may be used to store the computer programs and/or modules, and the processor may implement various functions of the computer device by running or executing the computer programs and/or modules stored in the memory and invoking data stored in the memory. The memory may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, video data, etc.) created according to the use of the cellular phone, etc.
The memory may be integrated in the processor or may be provided separately from the processor.
In one embodiment, a computer readable storage medium is provided, having stored thereon a computer program that, when executed by a processor, implements the steps of the method for temperature control of a multi-compartment refrigerator of the embodiments described above, such as the steps 101-106 shown in fig. 2 and extensions of other extensions and related steps of the method. To avoid repetition, further description is omitted here.
The temperature control system, the method, the micro control unit and the storage medium of the multi-cell refrigerator provided by the embodiment improve the cold air circulation access passage fixed on the refrigerator cell into a software automatic control mode, improve the refrigeration control precision of the whole system, can meet the situation with higher requirement on the temperature control precision, adopt an article detection function, carry out cold air circulation shielding on unused cells or cells with poor heat preservation effect, can improve the refrigeration speed and efficiency of the whole refrigerator, and from the aspect of operation, the refrigerator belongs to equipment with larger power consumption, refrigerate only an object cell by adopting the cell cold air circulation access automatic control and the article detection function, can reduce the power consumption of the whole system in a certain program, and achieve the effects of energy conservation and emission reduction.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, storage, database, or other medium used in the embodiments provided herein may include non-volatile and/or volatile memory, among others. Non-volatile memory can include read-only memory (ROM), Programmable ROM (PROM), Electrically Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDRSDRAM), Enhanced SDRAM (ESDRAM), Synchronous Link DRAM (SLDRAM), Rambus Direct RAM (RDRAM), direct bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-mentioned division of the functional units and modules is illustrated, and in practical applications, the above-mentioned function distribution may be performed by different functional units and modules according to needs, that is, the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-mentioned functions.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention.

Claims (10)

1. A temperature control system of a multi-grid refrigerator comprises refrigeration equipment provided with a refrigeration pipeline, and is characterized by further comprising a micro control unit, an air-cooled shutter, a first analog switch selection assembly, a second analog switch selection assembly, article detection equipment and a temperature sensor;
every check mouth of freezer all is equipped with article check out test set and temperature sensor, first analog switch selects the subassembly respectively with each article check out test set with little the control unit electricity is connected, second analog switch selects the subassembly respectively with each temperature sensor with little the control unit electricity is connected, little the control unit respectively with refrigeration plant with air cooling shutter electricity is connected, the blade of air cooling shutter with each check mouth of freezer corresponds the setting, the blade of air cooling shutter be used for opening or close correspond check mouth with passageway between the refrigeration pipeline.
2. The temperature control system of a multi-compartment refrigerator of claim 1, wherein the first analog switch selection component is cascaded through a plurality of first analog switches and the second analog switch selection component is cascaded through a plurality of second analog switches.
3. The temperature control system of a multi-compartment refrigerator of claim 2, wherein the first analog switch and the second analog switch are both model numbers 74HC 4051D.
4. The temperature control system of a multi-compartment refrigerator of claim 1, wherein said item detection device comprises a pressure sensor, said pressure sensor is provided at each compartment of said refrigerator, and each of said pressure sensors is electrically connected to said first analog switch selection assembly.
5. A method for controlling the temperature of a multi-compartment refrigerator, said method being applied to a micro-control unit, characterized in that said method comprises:
receiving an article detection signal sent by article detection equipment, wherein the article detection equipment is correspondingly arranged on each cell of the refrigerator;
determining the lattice stored with the article according to the article detection signal;
acquiring the temperature in a corresponding grid detected by a temperature sensor in the grid in which the articles are stored;
when the temperature of at least one grid detected by the temperature sensor is greater than a first preset value, controlling the refrigeration equipment to start, and controlling the blades in the air-cooling shutter corresponding to the grid with the temperature greater than the first preset value to open;
when the temperature of the corresponding grid opening detected by the temperature sensor is smaller than a second preset value, controlling the blades in the air-cooled shutter corresponding to the grid opening with the temperature smaller than the second preset value to close;
and when the temperatures of the corresponding grids detected by the temperature sensors are all smaller than the second preset value, controlling the refrigeration equipment to be closed.
6. The method of controlling temperature of a multi-compartment refrigerator according to claim 5, wherein the item detection device includes a pressure sensor, and the step of receiving an item detection signal from the item detection device includes:
receiving a pressure value in a corresponding grid sent by the pressure sensor;
the step of determining the bin storing the article according to the article detection signal comprises:
and when the pressure value is larger than a preset pressure value, judging that articles are stored in the cell corresponding to the pressure sensor, otherwise, judging that no articles are stored in the cell corresponding to the pressure sensor.
7. The method of temperature control of a multi-compartment refrigerator of claim 5, the method further comprising:
acquiring the temperature in the corresponding grid detected by the temperature sensor, wherein the temperature sensor is correspondingly arranged in each grid of the refrigerator;
when the minimum value of the detected temperature is larger than a third preset value, judging that the heat preservation of the lattice opening corresponding to the temperature sensor is abnormal;
and controlling the blades of the air-cooled shutter corresponding to the abnormal heat-preservation grid to be closed all the time.
8. The method of temperature control of a multi-compartment refrigerator of claim 7, the method further comprising:
acquiring a unique identifier of the lattice with abnormal heat preservation;
and sending out a heat preservation function abnormity prompt aiming at the unique identifier of the abnormal heat preservation grid.
9. A micro-control unit comprising a memory, a processor and a computer program stored in said memory and executable on said processor, characterized in that said processor, when executing said computer program, carries out the steps of the method for controlling the temperature of a multi-compartment refrigerator according to any one of claims 5 to 8.
10. A computer-readable storage medium, storing a computer program, characterized in that the computer program, when being executed by a processor, realizes the steps of the method for controlling the temperature of a multi-compartment refrigerator according to any one of claims 5 to 8.
CN202011314741.9A 2020-11-20 2020-11-20 Temperature control system and method for multi-cell refrigerator, micro control unit and storage medium Pending CN112577246A (en)

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Publication number Priority date Publication date Assignee Title
US4998582A (en) * 1989-03-06 1991-03-12 Mitsubishi Jukogyo Kabushiki Kaisha Refrigerator system for a container
CN104296495A (en) * 2014-10-14 2015-01-21 鹏科金属制品（南京）有限公司 Smart remote food and drug self-pick-up freezer system with independent temperature control branches
CN108398220A (en) * 2017-10-19 2018-08-14 圆通速递有限公司 A kind of device for detecting sealability and intelligent heat preserving case
CN210242136U (en) * 2019-07-15 2020-04-03 苏州天茹生物科技有限公司 Ultra-low temperature biomedical hutch
CN111640244A (en) * 2019-12-21 2020-09-08 深圳市智莱科技股份有限公司 Automatic vending equipment and temperature control method thereof

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4998582A (en) * 1989-03-06 1991-03-12 Mitsubishi Jukogyo Kabushiki Kaisha Refrigerator system for a container
CN104296495A (en) * 2014-10-14 2015-01-21 鹏科金属制品（南京）有限公司 Smart remote food and drug self-pick-up freezer system with independent temperature control branches
CN108398220A (en) * 2017-10-19 2018-08-14 圆通速递有限公司 A kind of device for detecting sealability and intelligent heat preserving case
CN210242136U (en) * 2019-07-15 2020-04-03 苏州天茹生物科技有限公司 Ultra-low temperature biomedical hutch
CN111640244A (en) * 2019-12-21 2020-09-08 深圳市智莱科技股份有限公司 Automatic vending equipment and temperature control method thereof

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