CN113834280A - Control method and device of freezing and refrigerating system and refrigerator - Google Patents
Control method and device of freezing and refrigerating system and refrigerator Download PDFInfo
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- CN113834280A CN113834280A CN202111124406.7A CN202111124406A CN113834280A CN 113834280 A CN113834280 A CN 113834280A CN 202111124406 A CN202111124406 A CN 202111124406A CN 113834280 A CN113834280 A CN 113834280A
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- 238000007710 freezing Methods 0.000 title claims abstract description 166
- 230000008014 freezing Effects 0.000 title claims abstract description 166
- 238000000034 method Methods 0.000 title claims abstract description 46
- 238000005057 refrigeration Methods 0.000 claims abstract description 230
- 238000001816 cooling Methods 0.000 claims description 20
- 238000011217 control strategy Methods 0.000 claims description 15
- 230000000737 periodic effect Effects 0.000 claims description 8
- 238000004590 computer program Methods 0.000 claims description 7
- 230000000694 effects Effects 0.000 abstract description 19
- 238000010586 diagram Methods 0.000 description 7
- 230000009977 dual effect Effects 0.000 description 7
- 230000006870 function Effects 0.000 description 7
- 239000003507 refrigerant Substances 0.000 description 6
- 238000005086 pumping Methods 0.000 description 5
- 238000012545 processing Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000005055 memory storage Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
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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
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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
- F25D11/022—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures with two or more evaporators
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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
- F25D2600/00—Control issues
- F25D2600/06—Controlling according to a predetermined profile
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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
- F25D2700/00—Means for sensing or measuring; Sensors therefor
- F25D2700/12—Sensors measuring the inside temperature
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Abstract
The invention provides a control method and a control device of a freezing and refrigerating system and a refrigerator, wherein the method comprises the following steps: acquiring temperature data of a freezing chamber and temperature data of a refrigerating chamber; determining a freezing and refrigerating request urgency grade according to the temperature data of the freezing chamber, and determining a refrigerating and refrigerating request urgency grade according to the temperature data of the refrigerating chamber; and performing refrigeration control according to the freezing refrigeration request urgency level and the refrigerating refrigeration request urgency level. By the technical scheme, the technical problems that an existing refrigerator is poor in refrigerating effect and large in temperature fluctuation of the compartment which is not in a refrigerating state are solved, and the technical effects of efficient refrigeration and stable refrigerating temperature are achieved.
Description
Technical Field
The invention relates to the technical field of equipment control, in particular to a control method and device of a freezing and refrigerating system and a refrigerator.
Background
The parallel evaporator system refers to a refrigeration system in which at least two evaporators are connected in parallel, for example, a parallel dual evaporator system refers to a refrigeration system in which two evaporators are connected in parallel. When two evaporators refrigerate simultaneously, due to pressure changes of inlets and outlets of two branches, instability of gas-liquid two phases of refrigerating pieces easily causes uneven distribution of two branch refrigerants, thereby affecting the refrigerating effect of the refrigerator; if the two evaporators refrigerate in sequence, the temperature fluctuation of the uncooled compartment is easy to be large.
In view of the above problems of the existing parallel multiple evaporator system, no effective solution has been proposed.
Disclosure of Invention
The embodiment of the invention provides a control method and device of a freezing and refrigerating system and a refrigerator, and aims to solve the technical problems that an existing refrigerator is poor in refrigerating effect and large in temperature fluctuation of a compartment which is not in a refrigerating state.
In one aspect, a method for controlling a refrigeration system is provided, including:
acquiring temperature data of a freezing chamber and temperature data of a refrigerating chamber;
determining a freezing and refrigerating request urgency grade according to the temperature data of the freezing chamber, and determining a refrigerating and refrigerating request urgency grade according to the temperature data of the refrigerating chamber;
and performing refrigeration control according to the freezing refrigeration request urgency level and the refrigerating refrigeration request urgency level.
In one embodiment, the temperature data of the freezer compartment comprises at least one of: a freezing temperature, a freezing set temperature, a first freezing grade threshold value and a second freezing grade threshold value; the temperature data of the refrigerated compartment includes at least one of: the refrigerator comprises a refrigerating temperature, a refrigerating set temperature, a first refrigerating grade threshold value and a second refrigerating grade threshold value.
In one embodiment, determining a refrigeration request urgency level based on temperature data of the refrigeration compartment comprises:
calculating the difference between the current refrigeration temperature and the refrigeration set temperature;
comparing the difference to the first refrigeration level threshold, the second refrigeration level threshold;
and determining the urgent level of the refrigeration and refrigeration request according to the comparison result.
In one embodiment, determining a freeze refrigeration request urgency level based on temperature data of the freezer compartment comprises:
calculating the difference between the current freezing temperature and the freezing set temperature;
comparing the difference to the first freeze level threshold, the second freeze level threshold;
and determining the urgent level of the freezing refrigeration request according to the comparison result.
In one embodiment, performing cooling control according to the freezing refrigeration request urgency level and the refrigerating refrigeration request urgency level includes:
judging whether the freezing refrigeration request urgency level and the refrigerating refrigeration request urgency level are at the highest urgency level or the lowest urgency level at the same time;
if the pressure is at the highest urgent level, executing a periodic switching refrigeration control strategy on the freezing chamber and the refrigerating chamber;
if the pressure is at the lowest urgent level, controlling the compressor to shut down;
and if the emergency level is not at the highest emergency level or the lowest emergency level, executing a corresponding refrigeration control strategy according to the level of the freezing refrigeration request emergency level and the level of the refrigerating refrigeration request emergency level.
In one embodiment, a cycle-switched refrigeration control strategy is performed for a freezer compartment and a refrigerator compartment, comprising:
performing refrigeration control in a periodic switching mode of controlling a first refrigerating time length of the freezing chamber and controlling the refrigerating time length of the refrigerating chamber to be a second refrigerating time length; wherein the first duration is greater than the second duration.
In one embodiment, according to the level of the freezing refrigeration request urgent level and the level of the refrigerating refrigeration request urgent level, executing a corresponding refrigeration control strategy, comprising:
performing freezing refrigeration cycle control in a case where the freezing refrigeration request urgency level is higher than or equal to the refrigerating refrigeration request urgency level;
and performing refrigeration cycle control when the freezing refrigeration request urgent level is lower than the refrigeration request urgent level.
In one embodiment, when the refrigeration cycle control is performed in a case where the freezing refrigeration request urgency level is lower than the refrigeration request urgency level, the method further includes: determining whether to switch from a freezing refrigeration cycle control to a refrigerating refrigeration cycle control; if the refrigeration cycle control is switched to the refrigeration cycle control, the refrigeration evaporator is vacuumized; and after the vacuumizing is finished, performing refrigeration cycle control.
In another aspect, a control apparatus for a freezing and refrigerating system is provided, including:
the acquisition module is used for acquiring temperature data of the freezing chamber and temperature data of the refrigerating chamber;
the determining module is used for determining the urgent grade of a freezing and refrigerating request according to the temperature data of the freezing chamber and determining the urgent grade of a refrigerating and refrigerating request according to the temperature data of the refrigerating chamber;
and the control module is used for controlling refrigeration according to the refrigeration request urgency grade and the refrigeration request urgency grade.
In still another aspect, there is provided a refrigerator including: the control device for the freezing and refrigerating system.
In yet another aspect, a network device is provided, including: a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the steps of the above method when executing the computer program.
In a further aspect, a non-transitory computer-readable storage medium is provided, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the above-mentioned method.
In the above embodiments, the refrigeration urgency levels of the refrigerating compartment and the freezing compartment are determined by the temperature data of the refrigerating compartment and the freezing compartment in the freezing and refrigerating system, so as to perform the refrigeration control according to the refrigeration urgency levels. By means of the mode, the technical problems that an existing refrigerator is poor in refrigerating effect and large in temperature fluctuation of the compartment which is not in a refrigerating state can be solved, and therefore the technical effects of efficient refrigeration and stable refrigerating temperature can be achieved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a method flow diagram of a method of controlling a refrigeration system according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a parallel dual evaporator refrigeration system according to an embodiment of the present invention;
FIG. 3 is a schematic flow diagram illustrating control of a parallel dual evaporator refrigeration system according to an embodiment of the present invention;
fig. 4 is a block diagram showing the configuration of a control device of the freezing and refrigerating system according to the embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the following embodiments and accompanying drawings. The exemplary embodiments and descriptions of the present invention are provided to explain the present invention, but not to limit the present invention.
In view of the problems of poor multi-system refrigeration effect and large temperature fluctuation of the room between the systems of the parallel multi-evaporators, the present embodiment provides a control method of a freezing and refrigerating system, as shown in fig. 1, which may include the following steps:
step 101: acquiring temperature data of a freezing chamber and temperature data of a refrigerating chamber;
step 102: determining a freezing and refrigerating request urgency grade according to the temperature data of the freezing chamber, and determining a refrigerating and refrigerating request urgency grade according to the temperature data of the refrigerating chamber;
step 103: and performing refrigeration control according to the freezing refrigeration request urgency level and the refrigerating refrigeration request urgency level.
The freezing and refrigerating system can be a parallel double-evaporator system or a parallel triple-evaporator system, and the number of the evaporators is not limited.
In the above example, the refrigeration urgency levels of the refrigerating compartment and the freezing compartment are determined by the temperature data of the refrigerating compartment and the freezing compartment in the freezing and refrigerating system to perform the refrigeration control according to the refrigeration urgency levels. By means of the mode, the technical problems that an existing refrigerator is poor in refrigerating effect and large in temperature fluctuation of the compartment which is not in a refrigerating state can be solved, and therefore the technical effects of efficient refrigeration and stable refrigerating temperature can be achieved.
The temperature data of the freezing compartment may include, but is not limited to, at least one of: a freezing temperature, a freezing set temperature, a first freezing grade threshold value and a second freezing grade threshold value; the temperature data of the refrigerated compartment may include, but is not limited to, at least one of: the refrigerator comprises a refrigerating temperature, a refrigerating set temperature, a first refrigerating grade threshold value and a second refrigerating grade threshold value.
Specifically, determining the urgent level of the refrigeration cooling request according to the temperature data of the refrigeration compartment may include: calculating the difference between the current refrigeration temperature and the refrigeration set temperature; comparing the difference to the first refrigeration level threshold, the second refrigeration level threshold; and determining the urgent level of the refrigeration and refrigeration request according to the comparison result. Determining a freeze refrigeration request urgency level based on the freezer compartment temperature data may include: calculating the difference between the current freezing temperature and the freezing set temperature; comparing the difference to the first freeze level threshold, the second freeze level threshold; and determining the urgent level of the freezing refrigeration request according to the comparison result.
For example: the ranking can be done in the following manner:
wherein, TfDenotes the freezing temperature, Tf-setIndicates the freezing set temperature,. DELTA.Tf1Represents Tf-setCorresponding maximum temperature fluctuation value (Delta T) of freezing chamberf1Corresponding to the first freeze level threshold) mentioned above, Δ Tf2Represents Tf-setMaximum temperature fluctuation value (Delta T) of corresponding highest priority of freezing chamber temperaturef2Corresponding to the second freeze level threshold) as described above, Δ Tf2Greater than Δ Tf1，△Tf2And Δ Tf1Can be determined by experiment, TrIndicating the refrigerating temperature, Tr-setIndicating the refrigeration set temperature,. DELTA.Tr1Represents Tr-setCorresponding maximum temperature fluctuation value (Delta T) of refrigerating chamberr1Corresponding to the first refrigeration level threshold) mentioned above, Δ Tr2Represents Tr-setMaximum temperature fluctuation value (Delta T) of the corresponding refrigerating chamber temperature with the highest priorityr2Corresponding to the second refrigeration level threshold) mentioned above, Δ Tr2Greater than Δ Tr1，△Tr2And Δ Tr1Can be determined by experiment. That is, the urgency of the cooling request may be classified into different classes by designing the class threshold.
In order to avoid an excessive temperature rise in a certain compartment, the maximum compartment limit value is exceeded. When refrigeration control is performed according to the freezing refrigeration request urgency level and the refrigerating refrigeration request urgency level, if the freezing refrigeration request urgency level and the refrigerating refrigeration request urgency level are at the highest urgency level at the same time, the refrigeration control can be performed by adopting a periodic switching mode of controlling the first time length of refrigeration of the freezing chamber and the second time length of refrigeration of the refrigerating chamber; considering that the refrigeration capacity required for freezing is higher than for cold storage, the first period of time may be set longer than the second period of time, for example: a control method of short-period switching of freezing for 2min and refrigerating for 1min is adopted. For example, the cycle may be refrigerated for 2 minutes, then refrigerated for 1 minute, then refrigerated for 2 minutes, and then refrigerated for 1 minute … ….
When the refrigeration control is performed according to the freezing refrigeration request urgency level and the refrigerating refrigeration request urgency level, whether the freezing refrigeration request urgency level and the refrigerating refrigeration request urgency level are at the highest urgency level or the lowest urgency level at the same time can be judged; if the pressure is at the highest urgent level, executing a periodic switching refrigeration control strategy on the freezing chamber and the refrigerating chamber; if the pressure is at the lowest urgent level, controlling the compressor to shut down; and if the emergency level is not at the highest emergency level or the lowest emergency level, executing a corresponding refrigeration control strategy according to the level of the freezing refrigeration request emergency level and the level of the refrigerating refrigeration request emergency level.
Specifically, the performing of the cooling control according to the urgent freezing and cooling request level and the urgent refrigerating and cooling request level may include:
1) performing a freezing and refrigerating cycle control when the freezing and refrigerating request urgency level is higher than or equal to the refrigerating and refrigerating request urgency level, in a case where the freezing and refrigerating request urgency level and the refrigerating and refrigerating request urgency level are not simultaneously at a highest urgency level;
2) and performing a refrigerating and cooling cycle control when the freezing and cooling request urgency level and the refrigerating and cooling request urgency level are not both at a highest urgency level and when the freezing and cooling request urgency level is lower than the refrigerating and cooling request urgency level.
Considering that when the refrigerator is in a temperature priority control stage, the freezing refrigeration cycle is switched to the refrigerating refrigeration cycle, most of refrigerant in a pipeline is in a freezing evaporator, and if the refrigeration cycle is directly switched to the refrigerating refrigeration cycle, the refrigeration effect is influenced, so that the vacuumizing process of the evaporator can be increased when the freezing refrigeration cycle is switched to the refrigerating refrigeration cycle, namely two outlets of a three-way valve are closed, the evaporator vacuum can be realized when the refrigerator is started to be compressed, and the refrigerant is pumped out of the freezing evaporator. That is, when the refrigeration cycle control is switched to the refrigeration cycle control, the refrigeration evaporator may be subjected to a vacuum pumping operation; and after the vacuumizing is finished, performing refrigeration cycle control.
In order to reduce the operation cost, in the case that the freezing refrigeration request urgent level and the refrigerating refrigeration request urgent level are simultaneously at the lowest urgent level, the compressor may be controlled to be shut down and the refrigerator stops refrigerating.
The above method is described below with reference to a specific example, however, it should be noted that the specific example is only for better describing the present application and is not to be construed as limiting the present application.
In order to solve the problems that the refrigeration effect of the parallel evaporator dual system is poor and the temperature fluctuation of the room between the parallel dual evaporator systems is large, the embodiment provides a control method of the parallel dual evaporator, which mainly uses temperature priority control and is assisted by short-period switching.
Specifically, the urgency of a freezing and refrigerating request and the urgency of a refrigerating and refrigerating request are divided into three levels respectively, and the basic processes of freezing circulation, refrigerating circulation, evaporator vacuumizing and compressor stopping are determined according to the urgency level of a compartment.
When the refrigeration cycle is switched to the refrigeration cycle, the vacuumizing process of the evaporator is increased so as to improve the refrigeration effect of the refrigeration system.
When the refrigeration requests of the two compartments are in the highest urgent level, a control method of 'freezing 2min + refrigerating 1 min' short-period switching is adopted, so that the phenomenon that the temperature of a certain compartment is excessively increased and exceeds the maximum limit value of the compartment is avoided.
As shown in fig. 2, the schematic diagram of the parallel dual-evaporator refrigeration system comprises: the device comprises a compressor 1, an anti-condensation pipe 2, a condenser 3, a drying filter 4, a three-way valve 5, a freezing capillary tube 6, a refrigerating capillary tube 7, a refrigerating evaporator 8 and a freezing evaporator 9. The parallel dual evaporator refrigeration system may include: the refrigerating and refrigerating cycle loop (1-2-3-4-5-7-8-1) and the freezing and refrigerating cycle loop (1-2-3-4-5-6-9-1), wherein the flow direction of a refrigerant is controlled by a three-way valve 5, so that the switching between the freezing and refrigerating cycle is realized. The flow rates of the freezing capillary 6 and the refrigerating capillary 7 can be designed to be equal or unequal, and the flow rates can be designed according to actual conditions; the types (fin evaporator, wire tube evaporator) and sizes of the freezing evaporator 9 and the refrigerating evaporator 8 can be determined by the design of the refrigerator.
The urgency level of the refrigerating and freezing request can be divided into three levels according to the following table:
wherein, TfDenotes the freezing temperature, Tf-setIndicates the freezing set temperature,. DELTA.Tf1Represents Tf-setCorresponding maximum temperature fluctuation value, Delta T, of the freezing chamberf2Represents Tf-setCorresponding freezer temperature priority level 2 maximum temperature fluctuation value, TrIndicating the refrigerating temperature, Tr-setIndicating the refrigeration set temperature,. DELTA.Tr1Represents Tr-setCorresponding maximum temperature fluctuation value, delta T, of the refrigerating chamberr2Represents Tr-setAnd the corresponding refrigerating chamber temperature priority level 2 maximum temperature fluctuation value.
When the urgency degrees of the freezing and refrigerating requests are the highest levels (Y (f) ═ 2 and Y (r) ═ 2), a short-period quick switching refrigerating scheme of 'refrigerating and refrigerating 1min + freezing and refrigerating 2 min' is adopted to avoid large temperature fluctuation of a certain compartment. When the freezing and refrigerating requests are not at the highest refrigeration request urgency degree at the same time, controlling according to the temperature priority, namely, the freezing and refrigerating request urgency degree is higher than or equal to the refrigerating and refrigerating request urgency degree (Y (f) ═ 2, Y (r) ═ 1, Y (f) ═ 2, Y (r) ═ 0, Y (f) ═ 1, Y (r) ═ 1, Y (f) ═ 1, Y (r) ═ 0), and performing freezing and refrigerating circulation; the refrigerating/cooling cycle is performed with a refrigerating/cooling request urgency level lower than a refrigerating/cooling request urgency level (y (f) ═ 0, y (r) ═ 1, y (f) ═ 0, y (r) ═ 2, y (f) ═ 1, y (r) ═ 2. When the request for freezing and refrigerating is at the lowest urgency at the same time (y (f) ═ 0 and y (r) ═ 0), the compressor is turned off, and the refrigerator stops cooling.
When the refrigerator is in the temperature priority and carries out the control stage, convert freezing refrigeration cycle into cold-stored refrigeration cycle, most refrigerant is in freezing the evaporimeter in the pipeline, if directly switch into cold-stored refrigeration cycle, can influence the refrigeration effect, consequently, can increase evaporimeter evacuation process when converting into cold-stored refrigeration cycle by freezing refrigeration cycle, two exports of three-way valve are all closed promptly, and the compression is started can realize the evaporimeter vacuum, takes out the refrigerant from the evaporimeter.
As shown in fig. 3, a control flow diagram of a parallel dual-evaporator refrigeration system may include the following steps:
s1: powering on the refrigerator;
s2: determining whether the urgency degrees of the freezing and refrigerating cooling requests are the highest level, if so, executing S3, otherwise, executing S4;
s3: a short-period quick switching refrigeration scheme of refrigerating refrigeration for 1min and freezing refrigeration for 2min is adopted to avoid large temperature fluctuation of a certain compartment;
s4: determining whether y (f) is 0 and y (r) is 0, if yes, performing step S15, if no, performing step S5;
s5: determining whether y (f) is equal to or greater than y (r), if yes, performing step S12, if no, performing S6;
s6: determining whether Fczk is equal to 1, if yes, performing S7, if no, performing S9, Fczk representing a vacuuming execution parameter;
s7: starting the compressor, closing two outlets of the three-way valve, and performing vacuum-pumping circulation on the evaporator;
s8: determining that the vacuumizing time reaches the preset time, and executing step S9;
s9: starting the compressor, opening the three-way valve in a refrigeration loop, and performing refrigeration circulation;
s10: if y (f) >, (r) or Trmin < ═ Tr < ═ Trmax, step S11 is executed;
s11: determining that the evacuation execution parameter Fczk is 0, and executing S2 instead of executing the evacuation operation;
s12: starting the compressor, opening the three-way valve in a refrigeration loop, and performing refrigeration circulation;
s13: in the case of y (f) < ═ y (r) or Tfmin < ═ Tf < ═ Tfmax, step S14 is executed;
s14: determining that the vacuumizing execution parameter Fczk is 1, performing vacuumizing operation on the refrigeration evaporator, and executing S2 after vacuumizing is completed;
s15: the compressor is stopped.
Wherein, Trmin represents the lowest limit value of the refrigeration temperature, Trmax represents the highest limit value of the refrigeration temperature, Tfmin represents the lowest limit value of the freezing temperature, Tfmax represents the highest limit value of the freezing temperature, Y (f) represents the priority of the refrigeration request of the freezing chamber, Y (r) represents the priority of the refrigeration request of the refrigerating chamber, Fczk represents the vacuum-pumping execution parameter, 1 is that the vacuum-pumping circulation of the evaporator is needed, and 0 is that the vacuum-pumping circulation of the evaporator is not needed.
Through the control scheme, the temperature fluctuation of the compartments can be reduced, the temperature fluctuation of a certain compartment is avoided to be large when the load of the certain compartment is increased or the load difference of two compartments is large, the maximum utilization of the refrigerating capacity is realized, and the energy consumption of the refrigerator is reduced. Specifically, the refrigerating loop is controlled by a simple three-way valve without opening degree, so that the cost advantage is low; the control strategy of adopting the temperature priority and assisting short-period switching can avoid large temperature fluctuation of the compartment and has the effect of reducing energy consumption; meanwhile, the problem that the refrigeration effect of the refrigerator with two refrigeration loops working simultaneously is poor is avoided, and the problem that a refrigeration system is difficult to match in the design stage is also avoided.
Based on the same inventive concept, the embodiment of the present invention further provides a control device of a freezing and refrigerating system, as described in the following embodiments. Because the principle of solving the problems of the control device of the freezing and refrigerating system is similar to the control method of the freezing and refrigerating system, the implementation of the control device of the freezing and refrigerating system can refer to the implementation of the control method of the freezing and refrigerating system, and repeated parts are not described again. As used hereinafter, the term "unit" or "module" may be a combination of software and/or hardware that implements a predetermined function. Although the means described in the embodiments below are preferably implemented in software, an implementation in hardware, or a combination of software and hardware is also possible and contemplated. Fig. 4 is a block diagram of a control device of a freezing and refrigerating system according to an embodiment of the present invention, and as shown in fig. 4, the control device may include: an acquisition module 401, a determination module 402, and a control module 403, the structure of which is described below.
An obtaining module 401, configured to obtain temperature data of a freezing compartment and temperature data of a refrigerating compartment;
a determining module 402, configured to determine a freezing and refrigerating request urgency level according to the temperature data of the freezing compartment, and determine a refrigerating and refrigerating request urgency level according to the temperature data of the refrigerating compartment;
and a control module 403, configured to perform refrigeration control according to the urgent refrigeration request level and the urgent refrigeration request level.
In one embodiment, the temperature data of the freezing compartment may include, but is not limited to, at least one of: a freezing temperature, a freezing set temperature, a first freezing grade threshold value and a second freezing grade threshold value; the temperature data of the refrigerated compartment may include, but is not limited to, at least one of: the refrigerator comprises a refrigerating temperature, a refrigerating set temperature, a first refrigerating grade threshold value and a second refrigerating grade threshold value.
In one embodiment, the determining module 402 may specifically calculate a difference between the current refrigeration temperature and the refrigeration set temperature; comparing the difference to the first refrigeration level threshold, the second refrigeration level threshold; and determining the urgent level of the refrigeration and refrigeration request according to the comparison result.
In one embodiment, the determining module 402 may specifically calculate a difference between the current freezing temperature and the freezing set temperature; comparing the difference to the first freeze level threshold, the second freeze level threshold; and determining the urgent level of the freezing refrigeration request according to the comparison result.
In one embodiment, the control module 403 may specifically determine whether the freezing refrigeration request urgency level and the refrigerating refrigeration request urgency level are both at the highest urgency level or the lowest urgency level; if the pressure is at the highest urgent level, executing a periodic switching refrigeration control strategy on the freezing chamber and the refrigerating chamber; if the pressure is at the lowest urgent level, controlling the compressor to shut down; and if the emergency level is not at the highest emergency level or the lowest emergency level, executing a corresponding refrigeration control strategy according to the level of the freezing refrigeration request emergency level and the level of the refrigerating refrigeration request emergency level.
In one embodiment, a cycle-switched refrigeration control strategy is performed for a freezer compartment and a refrigerator compartment, comprising: performing refrigeration control in a periodic switching mode of controlling a first refrigerating time length of the freezing chamber and controlling the refrigerating time length of the refrigerating chamber to be a second refrigerating time length; wherein the first duration is greater than the second duration.
In one embodiment, executing the corresponding refrigeration control strategy according to the level of the freezing refrigeration request urgency level and the level of the refrigerating refrigeration request urgency level may include: performing freezing refrigeration cycle control in a case where the freezing refrigeration request urgency level is higher than or equal to the refrigerating refrigeration request urgency level; and performing refrigeration cycle control when the freezing refrigeration request urgent level is lower than the refrigeration request urgent level.
In one embodiment, when the refrigeration cycle control is performed in a case where the freezing refrigeration request urgency level is lower than the refrigeration request urgency level, the method further includes: determining whether to switch from a freezing refrigeration cycle control to a refrigerating refrigeration cycle control; if the refrigeration cycle control is switched to the refrigeration cycle control, the refrigeration evaporator is vacuumized; and after the vacuumizing is finished, performing refrigeration cycle control.
In one embodiment, performing the cooling control according to the freezing refrigeration request urgency level and the refrigerating refrigeration request urgency level may include: and controlling the compressor to shut down under the condition that the freezing refrigeration request urgent level and the refrigerating refrigeration request urgent level are simultaneously at the lowest urgent level.
In another embodiment, a software is provided, which is used to execute the technical solutions described in the above embodiments and preferred embodiments.
In another embodiment, a storage medium is provided, in which the software is stored, and the storage medium includes but is not limited to: optical disks, floppy disks, hard disks, erasable memory, etc.
From the above description, it can be seen that the embodiments of the present invention achieve the following technical effects: and determining the refrigeration urgency levels of the refrigerating chamber and the freezing chamber according to the temperature data of the refrigerating chamber and the freezing chamber in the freezing and refrigerating system so as to perform refrigeration control according to the refrigeration urgency levels. By means of the mode, the technical problems that an existing refrigerator is poor in refrigerating effect and large in temperature fluctuation of the compartment which is not in a refrigerating state can be solved, and therefore the technical effects of efficient refrigeration and stable refrigerating temperature can be achieved.
Although various specific embodiments are mentioned in the disclosure of the present application, the present application is not limited to the cases described in the industry standards or the examples, and the like, and some industry standards or the embodiments slightly modified based on the implementation described in the custom manner or the examples can also achieve the same, equivalent or similar, or the expected implementation effects after the modifications. Embodiments employing such modified or transformed data acquisition, processing, output, determination, etc., may still fall within the scope of alternative embodiments of the present application.
Although the present application provides method steps as described in an embodiment or flowchart, more or fewer steps may be included based on conventional or non-inventive means. The order of steps recited in the embodiments is merely one manner of performing the steps in a multitude of orders and does not represent the only order of execution. When an apparatus or client product in practice executes, it may execute sequentially or in parallel (e.g., in a parallel processor or multithreaded processing environment, or even in a distributed data processing environment) according to the embodiments or methods shown in the figures. The terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, the presence of additional identical or equivalent elements in a process, method, article, or apparatus that comprises the recited elements is not excluded.
The devices or modules and the like explained in the above embodiments may be specifically implemented by a computer chip or an entity, or implemented by a product with certain functions. For convenience of description, the above devices are described as being divided into various modules by functions, and are described separately. Of course, in implementing the present application, the functions of each module may be implemented in one or more pieces of software and/or hardware, or a module that implements the same function may be implemented by a combination of a plurality of sub-modules, and the like. The above-described apparatus embodiments are merely illustrative, and for example, the division of the modules is merely a logical division, and other divisions may be realized in practice, for example, a plurality of modules or components may be combined or integrated into another system, or some features may be omitted, or not executed.
Those skilled in the art will also appreciate that, in addition to implementing the controller as pure computer readable program code, the same functionality can be implemented by logically programming method steps such that the controller is in the form of logic gates, switches, application specific integrated circuits, programmable logic controllers, embedded microcontrollers and the like. Such a controller may therefore be considered as a hardware component, and the means included therein for performing the various functions may also be considered as a structure within the hardware component. Or even means for performing the functions may be regarded as being both a software module for performing the method and a structure within a hardware component.
The application may be described in the general context of computer-executable instructions, such as program modules, being executed by a computer. Generally, program modules include routines, programs, objects, components, data structures, classes, etc. that perform particular tasks or implement particular abstract data types. The application may also be practiced in distributed computing environments where tasks are performed by remote processing devices that are linked through a communications network. In a distributed computing environment, program modules may be located in both local and remote computer storage media including memory storage devices.
From the above description of the embodiments, it is clear to those skilled in the art that the present application can be implemented by software plus necessary general hardware platform. Based on such understanding, the technical solutions of the present application may be embodied in the form of a software product, which may be stored in a storage medium, such as a ROM/RAM, a magnetic disk, an optical disk, or the like, and includes several instructions for enabling a computer device (which may be a personal computer, a mobile terminal, a server, or a network device) to execute the method according to the embodiments or some parts of the embodiments of the present application.
The embodiments in the present specification are described in a progressive manner, and the same or similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. The application is operational with numerous general purpose or special purpose computing system environments or configurations. For example: personal computers, server computers, hand-held or portable devices, tablet-type devices, multiprocessor systems, microprocessor-based systems, set top boxes, programmable electronic devices, network PCs, minicomputers, mainframe computers, distributed computing environments that include any of the above systems or devices, and the like.
While the present application has been described by way of examples, those of ordinary skill in the art will appreciate that there are numerous variations and permutations of the present application that do not depart from the spirit of the present application and that the appended embodiments are intended to include such variations and permutations without departing from the present application.
Claims (12)
1. A method of controlling a refrigeration chiller system comprising:
acquiring temperature data of a freezing chamber and temperature data of a refrigerating chamber;
determining a freezing and refrigerating request urgency grade according to the temperature data of the freezing chamber, and determining a refrigerating and refrigerating request urgency grade according to the temperature data of the refrigerating chamber;
and performing refrigeration control according to the freezing refrigeration request urgency level and the refrigerating refrigeration request urgency level.
2. The method of claim 1, wherein the temperature data of the freezer compartment comprises at least one of: a freezing temperature, a freezing set temperature, a first freezing grade threshold value and a second freezing grade threshold value;
the temperature data of the refrigerated compartment includes at least one of: the refrigerator comprises a refrigerating temperature, a refrigerating set temperature, a first refrigerating grade threshold value and a second refrigerating grade threshold value.
3. The method of claim 2, wherein determining a refrigeration request urgency level based on temperature data of the refrigeration compartment comprises:
calculating the difference between the current refrigeration temperature and the refrigeration set temperature;
comparing the difference to the first refrigeration level threshold, the second refrigeration level threshold;
and determining the urgent level of the refrigeration and refrigeration request according to the comparison result.
4. The method of claim 2, wherein determining a freeze refrigeration request urgency level based on temperature data of the freeze compartment comprises:
calculating the difference between the current freezing temperature and the freezing set temperature;
comparing the difference to the first freeze level threshold, the second freeze level threshold;
and determining the urgent level of the freezing refrigeration request according to the comparison result.
5. The method of claim 1, wherein performing cooling control based on the chilled cooling request urgency level and the chilled cooling request urgency level comprises:
judging whether the freezing refrigeration request urgency level and the refrigerating refrigeration request urgency level are at the highest urgency level or the lowest urgency level at the same time;
if the pressure is at the highest urgent level, executing a periodic switching refrigeration control strategy on the freezing chamber and the refrigerating chamber;
if the pressure is at the lowest urgent level, controlling the compressor to shut down;
and if the emergency level is not at the highest emergency level or the lowest emergency level, executing a corresponding refrigeration control strategy according to the level of the freezing refrigeration request emergency level and the level of the refrigerating refrigeration request emergency level.
6. The method of claim 5, wherein performing a cycle-switched refrigeration control strategy for the freezer compartment and the refrigerator compartment comprises:
performing refrigeration control by adopting a periodic switching mode of controlling a first refrigerating time length of the freezing chamber and a second refrigerating time length of the refrigerating chamber; wherein the first duration is greater than the second duration.
7. The method of claim 5, wherein executing the corresponding refrigeration control strategy according to the level of the freezing refrigeration request urgency level and the refrigerating refrigeration request urgency level comprises:
performing freezing refrigeration cycle control in a case where the freezing refrigeration request urgency level is higher than or equal to the refrigerating refrigeration request urgency level;
and performing refrigeration cycle control when the freezing refrigeration request urgent level is lower than the refrigeration request urgent level.
8. The method as claimed in claim 7, wherein, when performing the refrigerating refrigeration cycle control in a case where the freezing refrigeration request urgency level is lower than the refrigerating refrigeration request urgency level, further comprising:
determining whether to switch from a freezing refrigeration cycle control to a refrigerating refrigeration cycle control;
if the refrigeration cycle control is switched to the refrigeration cycle control, the refrigeration evaporator is vacuumized;
and after the vacuumizing is finished, performing refrigeration cycle control.
9. A control apparatus for a refrigeration chiller system, comprising:
the acquisition module is used for acquiring temperature data of the freezing chamber and temperature data of the refrigerating chamber;
the determining module is used for determining the urgent grade of a freezing and refrigerating request according to the temperature data of the freezing chamber and determining the urgent grade of a refrigerating and refrigerating request according to the temperature data of the refrigerating chamber;
and the control module is used for controlling refrigeration according to the refrigeration request urgency grade and the refrigeration request urgency grade.
10. A refrigerator to which the control method of the freezing and refrigerating system of any one of claims 1 to 8 is applied, the refrigerator further comprising a control device of the freezing and refrigerating system of claim 9.
11. A network device, comprising: memory, processor and computer program stored on the memory and executable on the processor, characterized in that the processor implements the steps of the method according to any of claims 1 to 8 when executing the computer program.
12. A non-transitory computer readable storage medium, having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the steps of the method of any of claims 1 to 8.
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| CN202111124406.7A CN113834280A (en) | 2021-09-24 | 2021-09-24 | Control method and device of freezing and refrigerating system and refrigerator |
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| CN202111124406.7A CN113834280A (en) | 2021-09-24 | 2021-09-24 | Control method and device of freezing and refrigerating system and refrigerator |
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