CN114132478B - Control method, device, controller, system and equipment of refrigeration system - Google Patents
Control method, device, controller, system and equipment of refrigeration system Download PDFInfo
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- CN114132478B CN114132478B CN202111302045.0A CN202111302045A CN114132478B CN 114132478 B CN114132478 B CN 114132478B CN 202111302045 A CN202111302045 A CN 202111302045A CN 114132478 B CN114132478 B CN 114132478B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63J—AUXILIARIES ON VESSELS
- B63J2/00—Arrangements of ventilation, heating, cooling, or air-conditioning
- B63J2/12—Heating; Cooling
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The application relates to a control method, a control device, a control system and control equipment of a refrigeration system. Judging whether preset cooling operation conditions are met according to system operation parameters aiming at a multi-split refrigerating system, and if so, controlling the inaccurate temperature control refrigeration storage to enter a cooling operation mode, wherein in the cooling operation mode, controlling each inaccurate temperature control refrigeration storage not to stop refrigerating due to the fact that preset shutdown conditions are met. So set up, under the companion cold running mode, the refrigeration can not stop because of satisfying the shut down condition to the inaccurate temperature control freezer, consequently can not appear the condition that the internal machine load is very little to can avoid the system fluctuation, and then avoid the big fluctuation to appear in the storehouse temperature of accurate temperature control freezer, prolong the fresh-keeping cycle of the inside goods of accurate temperature control freezer.
Description
Technical Field
The present disclosure relates to the field of refrigeration technologies, and in particular, to a control method, device, controller, system, and apparatus for a refrigeration system.
Background
The marine refrigerating and refrigerating equipment is a multi-split refrigerating system, namely a system for dragging a plurality of internal machines (refrigeration houses) to operate through one external machine (refrigeration unit), and is mainly used for preserving fish, meat, fruits, vegetables and the like so as to meet the logistic supply of the crew. Since a crew is required to operate at sea for a long time, for example, more than 30 days may be required, a fresh-keeping period of a vegetable and fruit warehouse (refrigerator) is required to be more than 30 days. Therefore, the vegetable and fruit warehouse (refrigerator) needs high-precision temperature control, thereby reducing the fluctuation of the warehouse temperature and prolonging the fresh-keeping period of goods. However, due to the limitation of the structure of the one-to-many system, when the load of the internal machine is very small, the system fluctuation is very easy to be caused, so that the temperature of the vegetable and fruit warehouse is greatly fluctuated, that is, the requirement of accurate temperature control cannot be met, and the requirement of long-time fresh keeping cannot be met. There is currently no good solution to this problem.
Disclosure of Invention
The application provides a control method, a device, a controller, a system and equipment of a refrigeration system, which are used for solving the problem that the temperature cannot be accurately controlled when the cooling load of an internal machine in a one-to-many refrigeration system is small.
The above object of the present application is achieved by the following technical solutions:
in a first aspect, an embodiment of the present application provides a control method of a refrigeration system, where the refrigeration system includes at least one precisely controlled temperature refrigerator and at least two non-precisely controlled temperature refrigerators; the method comprises the following steps:
judging whether the cooling operation condition is met or not based on the operation parameters of the refrigerating system;
if the cooling operation condition is met, controlling the inaccurate temperature control refrigeration storage to enter a cooling operation mode; and in the cooling operation mode, controlling each inaccurate temperature control refrigeration house to stop refrigeration due to the fact that preset shutdown conditions are met.
Optionally, the judging whether the cooling operation condition is satisfied based on the operation parameters of the refrigeration system includes:
determining the number of refrigerators having refrigeration requirements;
if at least one refrigeration house has refrigeration requirement, acquiring the current suction pressure of the compressor;
and if the current suction pressure is smaller than the difference value between the suction pressure set value and the preset pressure, determining that the cooling operation condition is met.
Optionally, the method further comprises:
judging whether each refrigeration house meets preset defrosting conditions or not in a cooling operation mode;
and if a plurality of inaccurate temperature control refrigerators meet the defrosting conditions at the same time, controlling each inaccurate temperature control refrigerator meeting the defrosting conditions to alternately enter a defrosting mode.
Optionally, when the non-precise temperature control refrigerators meeting the defrosting conditions are controlled to alternately enter the defrosting mode, only one non-precise temperature control refrigerator is enabled to execute the defrosting mode at the same time.
Optionally, when the non-precise temperature control refrigerators meeting the defrosting conditions are controlled to enter the defrosting mode in a rotating mode, the non-precise temperature control refrigerators are controlled to execute the defrosting mode sequentially according to a preset priority order.
Optionally, the controlling the defrosting modes of each inaccurate temperature control refrigerator sequentially according to a preset priority order includes:
and after the defrosting mode is finished and the refrigeration mode is re-entered by the inaccurate temperature control refrigeration house with the current priority, the defrosting mode is entered by the inaccurate temperature control refrigeration house with the next priority.
Optionally, if the number of the precisely controlled refrigerators is at least two, determining whether each refrigerator meets a preset defrosting condition further includes:
and if a plurality of accurate temperature control refrigerators meet the defrosting conditions at the same time, controlling each accurate temperature control refrigerator meeting the defrosting conditions to enter a defrosting mode alternately.
Optionally, when each accurate temperature control refrigerator meeting the defrosting conditions is controlled to alternately enter a defrosting mode, only one accurate temperature control refrigerator is enabled to execute the defrosting mode at the same time.
Optionally, the judging whether the cooling operation condition is satisfied based on the operation parameters of the refrigeration system includes:
determining the number of refrigerators having refrigeration requirements;
if at least one refrigeration house has refrigeration requirement, acquiring the current suction pressure of the compressor;
and if the current suction pressure is smaller than the difference value between the suction pressure set value and the preset pressure, determining that the cooling operation condition is met.
Optionally, the judging whether the cooling operation condition is satisfied based on the operation parameters of the refrigeration system further includes:
if the cooling operation condition is not met, controlling each refrigeration house to enter a conventional refrigeration mode;
judging whether each refrigeration house meets preset defrosting conditions in a conventional refrigeration mode;
and controlling each refrigeration house meeting the defrosting conditions to enter a defrosting mode.
In a second aspect, an embodiment of the present application further provides a control device of a refrigeration system, where the refrigeration system includes at least one precisely controlled temperature refrigerator and at least two non-precisely controlled temperature refrigerators; the device comprises:
the judging module is used for judging whether the cooling operation condition is met or not based on the operation parameters of the refrigerating system;
and the control module is used for controlling the inaccurate temperature control refrigeration storage to enter a cooling operation mode if the cooling operation condition is met.
In a third aspect, embodiments of the present application further provide a controller for a refrigeration system, including:
a memory and a processor coupled to the memory;
the memory is configured to store a program at least for implementing the method according to any one of the first aspects;
the processor is used for calling and executing the program stored in the memory.
In a fourth aspect, embodiments of the present application also provide a refrigeration system, which includes at least one precisely controlled temperature refrigerator and at least two non-precisely controlled temperature refrigerators, and is provided with a controller of the refrigeration system according to the third aspect.
In a fifth aspect, embodiments of the present application further provide a refrigeration apparatus, which includes the refrigeration system according to the fourth aspect.
The technical scheme provided by the embodiment of the application can comprise the following beneficial effects:
in the technical scheme provided by the embodiment of the application, aiming at a multi-split refrigerating system, judging whether preset cooling operation conditions are met according to system operation parameters, and if so, controlling the inaccurate temperature control refrigeration storage to enter a cooling operation mode, wherein in the cooling operation mode, controlling each inaccurate temperature control refrigeration storage to stop refrigerating due to the fact that preset shutdown conditions are met. So set up, under the companion cold running mode, the refrigeration can not stop because of satisfying the shut down condition to the inaccurate temperature control freezer, consequently can not appear the condition that the internal machine load is very little to can avoid the system fluctuation, and then avoid the big fluctuation to appear in the storehouse temperature of accurate temperature control freezer, prolong the fresh-keeping cycle of the inside goods of accurate temperature control freezer.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description, serve to explain the principles of the application.
FIG. 1 is a schematic diagram of a one-to-many refrigeration system;
fig. 2 is a flow chart of a control method of a refrigeration system according to an embodiment of the present application;
fig. 3 is a schematic structural diagram of a control device of a refrigeration system according to an embodiment of the present application;
fig. 4 is a schematic structural diagram of a controller of a refrigeration system according to an embodiment of the present application.
Detailed Description
Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples are not representative of all implementations consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with some aspects of the present application as detailed in the accompanying claims.
In order to make the technical solution of the present application easier to understand, prior art will be briefly described before the technical solution of the present application is described in detail.
In the marine refrigerating and refrigerating equipment, because the quantity of meat and fruit and vegetable goods to be stored is large, and the storage temperature requirements of the meat and fruit and vegetable goods are different, namely the meat is usually frozen (the storage temperature can be about-18 ℃), and the fruit and vegetable goods are usually refrigerated (the storage temperature can be about 4 ℃), different refrigerators of a one-to-many refrigerating system are usually adopted for storage respectively. In addition, in order to prolong the storage period of the fruit and vegetable goods, the corresponding refrigeration house (usually, a refrigeration house) needs to precisely control the temperature (for convenience of explanation, the refrigeration house is hereinafter referred to as a precisely controlled temperature refrigeration house, and the refrigeration house is correspondingly referred to as a non-precisely controlled temperature refrigeration house), so that the temperature of the refrigeration house cannot fluctuate greatly.
In practical application, the type selection of a general refrigerating unit needs to meet the refrigerating capacity required by the operation of all refrigerators when the refrigerating unit is configured, in this case, when only a small amount of refrigerators have refrigerating demands (such as only one precisely controlled temperature refrigerator has refrigerating demands), the refrigerating unit can be caused to operate under ultra-low load or even stop, thus the condition of large system fluctuation is caused, and the larger fluctuation of the system can cause obvious fluctuation of the temperature of the precisely controlled temperature refrigerator, which is unfavorable for prolonging the fresh-keeping period.
In order to solve the problems, the application provides a control method, wherein a cooling operation mode is preset, and in the cooling operation mode, an inaccurate temperature control refrigeration house is controlled not to stop because of meeting stop conditions, so that the condition that a refrigeration unit operates under ultra-low load is avoided, and the accurate temperature control requirement of the accurate temperature control refrigeration house is met. Specific embodiments are described in detail below by way of examples.
Examples
Referring to fig. 1-2, fig. 1 is a schematic structural diagram of a one-to-many refrigeration system, and fig. 2 is a flow chart of a control method of a refrigeration system according to an embodiment of the present application.
As shown in fig. 1, the one-to-many refrigerating system comprises a refrigerating unit (external machine) and four refrigerators (internal machine), wherein the four refrigerators comprise two precise temperature control refrigerators (refrigerator a and refrigerator B) and two non-precise temperature control refrigerators (refrigerator C and refrigerator D). The control method of the present embodiment is based on a system similar to the above, but it is to be noted that, in practical application, the number of refrigerators is not limited to four, but only includes at least one precisely controlled temperature refrigerator and at least two inaccurately controlled temperature refrigerators, and fig. 1 is only taken as an example for convenience of subsequent description.
As shown in fig. 2, the method of this embodiment at least includes the following steps:
s101: judging whether the cooling operation condition is met or not based on the operation parameters of the refrigerating system;
specifically, in practical application, at first, it needs to be satisfied that there are at least two imprecise temperature control refrigerators, for example, it can be set as: the system automatically sends T Setting up ≤T Cold tracing Is identified as an imprecise temperature control freezer, wherein T Cold tracing Is a preset value; second, it is also desirable that the current refrigeration system be enabled for cold tracingThe line mode (which can be set by the control end) can then determine whether the cooling operation condition is satisfied based on the operation parameters of the refrigeration system.
For example, one possible implementation of the step S101 includes:
determining the number of refrigerators having refrigeration requirements; if at least one refrigeration house has refrigeration requirement, acquiring the current suction pressure of the compressor; and if the current suction pressure is smaller than the difference value between the suction pressure set value and the preset pressure, determining that the cooling operation condition is met.
Specifically, in application, if the refrigeration requirement exists in the refrigeration house, a refrigeration operation signal is sent to the refrigeration unit, so that the refrigeration unit can determine the quantity of the refrigeration houses with the refrigeration requirement according to the quantity of the received refrigeration operation signals. When at least one refrigeration house has refrigeration requirement, whether the cooling operation mode is required to be executed is further judged according to the current suction pressure of the compressor.
Current suction pressure P of compressor Inhalation of air There are three situations: (1) p (P) Inhalation of air ＜P Setting up -ΔP；②P Setting up -ΔP≤P Inhalation of air ≤P Setting up +ΔP；③P Inhalation of air ＞P Setting up +ΔP, where P Setting up For the suction pressure set point, ΔP is the preset pressure. In the normal refrigeration mode, if the condition (1) is satisfied, the refrigeration unit is stopped; if the condition (2) is satisfied, the refrigerating unit can maintain the original state; if the condition (3) is satisfied, the refrigerating unit can start up for refrigeration. However, in the cooling mode of operation, the first situation may occur when there is only one precisely controlled temperature refrigerator with a small cooling capacity (because there is a relatively non-precisely controlled temperature refrigerator with a small cooling capacity, and thus the total cooling capacity is relatively small when there is only one precisely controlled temperature refrigerator with a small cooling capacity, so that the system detects P Inhalation of air Smaller) and therefore, in this implementation, when there is a refrigeration requirement in at least one refrigeration house and the current suction pressure is less than the difference between the suction pressure set point and the preset pressure (i.e., satisfies the (1) th case), it is determined that there is a refrigeration requirement in the precisely controlled temperature refrigeration house and that the precisely controlled temperature is not precisely controlledThe refrigeration requirement does not exist in the refrigeration house, and the cooling operation condition is met at the moment.
If other results are obtained, for example, when the number of refrigerators with refrigeration requirements is 0, the refrigerating unit is obviously controlled to stop; for another example, when at least one refrigeration compartment has a refrigeration requirement, but P Inhalation of air ≥P Setting up When Δp is (i.e. satisfying the above (2) or (3)) it can be determined that there is a refrigeration requirement for at least one of the imprecise temperature-controlled refrigerators (possibly only one of the imprecise temperature-controlled refrigerators or both of the imprecise temperature-controlled refrigerators), and at this time, large fluctuation in the temperature of the precisely controlled refrigerator is not caused, so that the cooling-accompanying operation mode is not required, and the conventional refrigeration mode is continued.
S102: if the cooling operation condition is met, controlling the inaccurate temperature control refrigeration storage to enter a cooling operation mode; and in the cooling operation mode, controlling each inaccurate temperature control refrigeration house to stop refrigeration due to the fact that preset shutdown conditions are met.
Specifically, the scheme of the cooling operation mode differs from the conventional cooling mode as follows (wherein, the temperature of the storage temperature reaches the stop point temperature as a preset stop condition):
in the conventional refrigeration mode, in the refrigeration process, each refrigeration house needs a user to set a target refrigeration house temperature T Setting up When the actual temperature T Warehouse temperature Less than the corresponding stop point temperature T Setting up -at, the freezer stops cooling; when the actual warehouse temperature T Warehouse temperature Is greater than the corresponding starting point temperature T Setting up When +DeltaT, the refrigeration house starts to refrigerate; when T is Warehouse temperature At the stop point temperature T Setting up Delta T and on-point temperature T Setting up Between +Δt, the refrigerators remain in the original state, that is, the plurality of refrigerators are independently controlled without influence from each other.
After the cooling operation mode is adopted, even if the temperature of the non-accurate temperature control refrigeration house is lower than the temperature of a shutdown point (namely after the preset shutdown condition is met), the refrigeration can not be stopped, but the refrigeration is carried out along with the accurate temperature control refrigeration house (the mutual influence exists between the refrigeration houses), so that the condition of small internal machine load can not occur, the refrigerating unit can not operate under ultralow load, and the system operation can not have larger fluctuation. In addition, because the imprecise temperature control refrigerator stores the goods such as meat and the like which need to be frozen at low temperature, the adverse effect (namely, no freezing out) on the internal goods can be avoided even if the temperature of the refrigerator is lower than the temperature of the stop point. Therefore, the requirement that the fruits and vegetables are required to be preserved for a long time is met through the scheme of the cold-tracing operation.
After the inaccurate temperature control refrigeration house is controlled to enter a cooling operation mode, the inaccurate temperature control refrigeration house can always maintain a refrigeration operation state, and the machine is not stopped because the temperature of the refrigeration house reaches the temperature of a stop point. And after the system controller is controlled to exit the cooling operation mode, performing conventional control (executing a conventional refrigeration mode) based on the stop point temperature.
Through the scheme, the cooling operation mode is set for a plurality of refrigerating systems, and corresponding control is performed, so that under the cooling operation mode, the non-precise temperature control refrigeration house can not stop refrigerating due to the fact that the shutdown condition is met, the condition that the load of an internal machine is small can not occur, system fluctuation can be avoided, larger fluctuation of the temperature of the precise temperature control refrigeration house is avoided, and the fresh-keeping period of goods in the precise temperature control refrigeration house is prolonged.
However, based on the above scheme, researches show that the problem of frosting is inevitably faced after the refrigerator runs for a long time, so that the refrigerator with inaccurate temperature control inevitably needs to be shut down for defrosting, which results in that the process of cold running cannot be executed in some cases, and therefore, the problem of large fluctuation of system running still possibly exists. To this problem, this application provides corresponding defrosting control scheme, under the companion cold running mode, when all need defrosting in a plurality of inaccurate accuse temperature freezer, through the mode of a plurality of inaccurate accuse temperature freezer rotation defrosting of control, avoids a plurality of inaccurate accuse temperature freezer to shut down simultaneously to make the system fluctuation can not surpass reasonable scope. The specific scheme is as follows:
in some embodiments, the method further comprises: judging whether each refrigeration house meets preset defrosting conditions or not in a cooling operation mode; and if a plurality of inaccurate temperature control refrigerators meet the defrosting conditions at the same time, controlling each inaccurate temperature control refrigerator meeting the defrosting conditions to alternately enter a defrosting mode.
The defrosting condition can adopt the existing judging logic, for example, the corresponding judgment can be performed according to whether the continuous refrigeration time of the refrigeration house reaches the set time or whether defrosting is needed or not can be determined by directly detecting the thickness of the frost layer, and the like, and the defrosting condition can be specifically set according to actual needs.
When a plurality of (especially all) inaccurate temperature control refrigerators simultaneously meet defrosting conditions, namely, simultaneously enter a defrosting mode, if the refrigerators are controlled to stop defrosting simultaneously, ultralow-load operation of the refrigerating unit can be caused. Based on the above, the control method adopted in this embodiment is to control each inaccurate temperature control refrigerator meeting the defrosting condition to alternately enter the defrosting mode. And (3) alternately entering a defrosting mode, namely after defrosting of one (or a part of) the inaccurate temperature control refrigerators is finished, sequentially defrosting the rest of the inaccurate temperature control refrigerators. Thus, the refrigerating unit can be ensured not to operate under ultralow load.
So set up, under the companion cold running mode, when a plurality of inaccurate accuse temperature freezer need defrosting, not allow it to shut down simultaneously and defrost, but adopt the form of alternate defrosting to can avoid the inaccurate accuse temperature freezer of shut down too much and lead to accurate accuse temperature freezer's storehouse temperature fluctuation too big.
In practical application, optionally, when each inaccurate temperature control refrigerator meeting the defrosting conditions is controlled to enter the defrosting mode in a rotating way, only one inaccurate temperature control refrigerator is enabled to execute the defrosting mode at the same time. Therefore, only one inaccurate temperature control refrigerator stops defrosting at a time (other inaccurate temperature control refrigerators continue to operate with cold), so that the refrigerating unit can be better ensured not to operate under ultralow load. However, it should be noted that when the actually applied refrigeration system includes more inaccurate temperature control refrigerators, for example, four inaccurate temperature control refrigerators and simultaneously requires defrosting, the refrigeration operation time of the refrigerators under the condition of excessive frosting can be reduced by performing alternating defrosting according to the mode of every two refrigerators on the premise of ensuring that the refrigeration unit cannot operate under ultra-low load.
Furthermore, when the non-precise temperature control refrigerators meeting the defrosting conditions are controlled to enter the defrosting mode in a rotating mode, the non-precise temperature control refrigerators can be controlled to execute the defrosting mode in sequence according to a preset priority order. For example, for the refrigeration system of fig. 1, the priority of the refrigerator C may be set higher than that of the refrigerator D, so that when both the refrigerator C and the refrigerator D need defrosting, the refrigerator C prioritizes defrosting, and after the defrosting of the refrigerator C is completed, the refrigerator D performs defrosting again.
In some embodiments, the controlling the non-precise temperature control refrigerators to perform the defrosting mode sequentially according to a preset priority order specifically includes: and after the defrosting mode is finished and the refrigeration mode is re-entered by the inaccurate temperature control refrigeration house with the current priority, the defrosting mode is entered by the inaccurate temperature control refrigeration house with the next priority. That is, considering that the refrigeration mode is not generally recovered immediately after the completion of defrosting of the refrigerator (in order to improve defrosting effect, for example, to wait for the discharge of frost water formed by defrosting and avoid rapid re-defrosting), when the refrigerator is specifically applied, the refrigerator waiting for the completion of defrosting can be controlled to sequentially defrost the other refrigerators after reentering the refrigeration mode.
In addition, based on the same principle as the above embodiment, if the number of the precisely controlled temperature refrigerators is at least two, the control method may further include: and if the plurality of accurate temperature control refrigerators meet the defrosting conditions at the same time, controlling each accurate temperature control refrigerator meeting the defrosting conditions to enter a defrosting mode alternately.
That is, similar to the defrosting control of the non-precise temperature control refrigeration houses, if a plurality of precise temperature control refrigeration houses are judged to simultaneously meet the defrosting condition, the control is also performed by adopting a control method of alternating defrosting.
Further, when the precise temperature control refrigerators meeting the defrosting conditions are controlled to alternately enter the defrosting mode, the defrosting mode can be performed by only one precise temperature control refrigerator at the same time, and the function of the precise temperature control refrigerators is similar to that of the embodiment. Also, a more specific control process is similar to the foregoing embodiment, for example, regarding the system of fig. 1, the defrosting priority of the refrigerator a is preset to be higher than that of the refrigerator B, so that the refrigerator a performs defrosting with priority of the refrigerator B. The details are not described in detail here.
In addition, in some embodiments, the determining whether the cooling operation condition is satisfied based on the operation parameter of the refrigeration system further includes:
if the cooling operation condition is not met, controlling each refrigeration house to enter a conventional refrigeration mode;
judging whether each refrigeration house meets preset defrosting conditions in a conventional refrigeration mode;
and controlling each refrigeration house meeting the defrosting conditions to enter a defrosting mode.
That is, in the conventional refrigeration mode, if the refrigeration house meets the defrosting condition, defrosting is directly performed according to the conventional control logic controller (at the moment, a plurality of inaccurate temperature control refrigeration houses can be stopped for defrosting at the same time).
In addition, based on the same inventive concept, the embodiment of the application further provides a control device of the refrigeration system, corresponding to the control method of the refrigeration system provided by the embodiment. The apparatus is a collection of software and/or hardware based functional modules in a device for performing the above method.
Referring to fig. 3, a control device for a refrigeration system according to an embodiment of the present application includes the following structures:
a judging module 31 for judging whether the cooling operation condition is satisfied based on the operation parameters of the refrigeration system;
and the control module 32 is used for controlling the inaccurate temperature control refrigerator to enter the cooling operation mode if the cooling operation condition is met.
Optionally, the judging module 31 is specifically configured to, when judging whether the cooling operation condition is satisfied based on the operation parameters of the refrigeration system:
determining the number of refrigerators having refrigeration requirements;
if at least one refrigeration house has refrigeration requirement, acquiring the current suction pressure of the compressor;
and if the current suction pressure is smaller than the difference value between the suction pressure set value and the preset pressure, determining that the cooling operation condition is met.
Optionally, the judging module 31 is further configured to judge whether each refrigerator meets a preset defrosting condition in the cooling operation mode;
the control module 32 is further configured to control each of the inaccurate temperature-controlled refrigerators satisfying the defrosting condition to alternately enter the defrosting mode if the plurality of inaccurate temperature-controlled refrigerators simultaneously satisfy the defrosting condition.
Wherein, optionally, when the control module 31 controls each inaccurate temperature control refrigerator meeting the defrosting condition to enter the defrosting mode alternately, only one inaccurate temperature control refrigerator is enabled to execute the defrosting mode at the same time.
Optionally, when the control module 31 controls each inaccurate temperature control refrigerator meeting the defrosting conditions to alternately enter the defrosting mode, the control module sequentially controls each inaccurate temperature control refrigerator to execute the defrosting mode according to a preset priority order.
Optionally, the control module 31 sequentially controls each inaccurate temperature control refrigerator to perform the defrosting mode according to a preset priority order, which is specifically configured to:
and after the defrosting mode is finished and the refrigeration mode is re-entered by the inaccurate temperature control refrigeration house with the current priority, the defrosting mode is entered by the inaccurate temperature control refrigeration house with the next priority.
Optionally, if the number of the precisely controlled refrigerators is at least two, the control module 31 is further configured to:
and if a plurality of accurate temperature control refrigerators meet the defrosting conditions at the same time, controlling each accurate temperature control refrigerator meeting the defrosting conditions to enter a defrosting mode alternately.
Optionally, when the control module 31 controls each precise temperature control refrigerator meeting the defrosting conditions to alternately enter the defrosting mode, only one precise temperature control refrigerator performs the defrosting mode at the same time.
Optionally, the control module 31 is further configured to:
if the cooling operation condition is not met, controlling each refrigeration house to enter a conventional refrigeration mode;
judging whether each refrigeration house meets preset defrosting conditions in a conventional refrigeration mode;
and controlling each refrigeration house meeting the defrosting conditions to enter a defrosting mode.
The specific implementation of each step performed by each functional module may refer to the corresponding content of the foregoing method embodiment, which is not described in detail herein.
In addition, based on the same inventive concept, the embodiment of the application also provides a controller of the refrigeration system, corresponding to the control method of the refrigeration system provided by the embodiment.
Referring to fig. 4, a controller of a refrigeration system provided in an embodiment of the present application includes the following structures:
a memory 41 and a processor 42 connected to the memory 41;
the memory 41 is used for storing a program for implementing at least the method described in the foregoing embodiment;
the processor 42 is used to call and execute the program stored in the memory 41.
The specific implementation of each step of the method implemented by the above program may refer to the corresponding content of the foregoing method embodiment, which is not described in detail herein.
In addition, the embodiment of the application also provides a refrigerating system and refrigerating equipment comprising the refrigerating system, wherein the refrigerating system comprises at least one accurate temperature control refrigeration house and at least two non-accurate temperature control refrigeration houses, and the controller of the refrigerating system is arranged.
Through the scheme, in the cooling operation mode, when a plurality of inaccurate temperature control cold storages need defrosting, the plurality of inaccurate temperature control cold storages are not allowed to stop defrosting at the same time, but the mode of alternate defrosting is adopted, so that overlarge fluctuation of the temperature of the accurate temperature control cold storages caused by overlarge cold storages caused by shutdown can be avoided, and the fresh-keeping period of internal goods is prolonged.
It is to be understood that the same or similar parts in the above embodiments may be referred to each other, and that in some embodiments, the same or similar parts in other embodiments may be referred to.
It should be noted that in the description of the present application, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Furthermore, in the description of the present application, unless otherwise indicated, the meaning of "plurality" means at least two.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and further implementations are included within the scope of the preferred embodiment of the present application in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the embodiments of the present application.
It is to be understood that portions of the present application may be implemented in hardware, software, firmware, or a combination thereof. In the above-described embodiments, the various steps or methods may be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, may be implemented using any one or combination of the following techniques, as is well known in the art: discrete logic circuits having logic gates for implementing logic functions on data signals, application specific integrated circuits having suitable combinational logic gates, programmable Gate Arrays (PGAs), field Programmable Gate Arrays (FPGAs), and the like.
Those of ordinary skill in the art will appreciate that all or a portion of the steps carried out in the method of the above-described embodiments may be implemented by a program to instruct related hardware, where the program may be stored in a computer readable storage medium, and where the program, when executed, includes one or a combination of the steps of the method embodiments.
In addition, each functional unit in each embodiment of the present application may be integrated in one processing module, or each unit may exist alone physically, or two or more units may be integrated in one module. The integrated modules may be implemented in hardware or in software functional modules. The integrated modules may also be stored in a computer readable storage medium if implemented in the form of software functional modules and sold or used as a stand-alone product.
The above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, or the like.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present application have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the application, and that variations, modifications, alternatives, and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the application.
Claims (11)
1. The control method of the refrigerating system is characterized in that the refrigerating system comprises at least one precisely controlled temperature refrigeration house and at least two non-precisely controlled temperature refrigeration houses; the method comprises the following steps:
judging whether a preset cooling operation condition is met or not based on operation parameters of the refrigerating system;
if the cooling operation condition is met, controlling the inaccurate temperature control refrigeration storage to enter a cooling operation mode;
in the cooling operation mode, controlling each inaccurate temperature control refrigeration house not to stop refrigeration due to meeting preset shutdown conditions;
wherein, whether the operation parameter based on the refrigerating system judges to satisfy the cooling operation condition includes:
determining the number of refrigerators having refrigeration requirements;
if at least one refrigeration house has refrigeration requirement, acquiring the current suction pressure of the compressor;
if the current suction pressure is smaller than the difference value between the suction pressure set value and the preset pressure, determining that the cooling operation condition is met;
judging whether the cooling operation condition is met based on the operation parameters of the refrigerating system, and then further comprising:
if the cooling operation condition is not met, controlling each refrigeration house to enter a conventional refrigeration mode;
judging whether each refrigeration house meets preset defrosting conditions in a conventional refrigeration mode;
and controlling each refrigeration house meeting the defrosting conditions to enter a defrosting mode.
2. The method of claim 1, further comprising:
judging whether each refrigeration house meets preset defrosting conditions or not in a cooling operation mode;
and if a plurality of inaccurate temperature control refrigerators meet the defrosting conditions at the same time, controlling each inaccurate temperature control refrigerator meeting the defrosting conditions to alternately enter a defrosting mode.
3. The method according to claim 2, wherein when controlling each of the imprecise temperature-controlled refrigerators satisfying the defrosting condition to alternately enter a defrosting mode, only one imprecise temperature-controlled refrigerator is caused to perform the defrosting mode at the same time.
4. A method according to claim 3, wherein when controlling each inaccurate temperature control refrigerator meeting the defrosting condition to alternately enter a defrosting mode, sequentially controlling each inaccurate temperature control refrigerator to execute the defrosting mode according to a preset priority order.
5. The method of claim 4, wherein sequentially controlling each inaccurate temperature-controlled refrigerator to perform the defrosting mode according to a preset priority order comprises:
and after the defrosting mode is finished and the refrigeration mode is re-entered by the inaccurate temperature control refrigeration house with the current priority, the defrosting mode is entered by the inaccurate temperature control refrigeration house with the next priority.
6. The method of claim 3, wherein if the number of precisely controlled refrigerators is at least two, the determining whether each refrigerator satisfies a preset defrosting condition further comprises:
and if a plurality of accurate temperature control refrigerators meet the defrosting conditions at the same time, controlling each accurate temperature control refrigerator meeting the defrosting conditions to enter a defrosting mode alternately.
7. The method of claim 6, wherein controlling each precisely controlled temperature refrigerator that satisfies the defrosting condition alternately enters a defrosting mode, and wherein only one precisely controlled temperature refrigerator is caused to perform the defrosting mode at the same time.
8. The control device of the refrigerating system is characterized in that the refrigerating system comprises at least one precisely controlled temperature refrigeration house and at least two non-precisely controlled temperature refrigeration houses; the device comprises:
the judging module is used for judging whether the cooling operation condition is met or not based on the operation parameters of the refrigerating system; if the cooling operation condition is not met, controlling each refrigeration house to enter a conventional refrigeration mode; judging whether each refrigeration house meets preset defrosting conditions in a conventional refrigeration mode; controlling each refrigeration house meeting the defrosting conditions to enter a defrosting mode;
the control module is used for controlling the inaccurate temperature control refrigeration storage to enter a cooling operation mode if the cooling operation condition is met; in the cooling operation mode, controlling each inaccurate temperature control refrigeration house not to stop refrigeration due to meeting preset shutdown conditions;
wherein, judge whether the module satisfies the cold-tracing operation condition, include:
determining the number of refrigerators having refrigeration requirements;
if at least one refrigeration house has refrigeration requirement, acquiring the current suction pressure of the compressor;
and if the current suction pressure is smaller than the difference value between the suction pressure set value and the preset pressure, determining that the cooling operation condition is met.
9. A control for a refrigeration system, comprising:
a memory and a processor coupled to the memory;
the memory being adapted to store a program at least for implementing the method according to any one of claims 1-7;
the processor is used for calling and executing the program stored in the memory.
10. A refrigeration system comprising at least one precisely controlled temperature freezer and at least two non-precisely controlled temperature freezers, and provided with a controller for a refrigeration system as claimed in claim 9.
11. A refrigeration apparatus comprising the refrigeration system of claim 10.
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| JP2005331140A (en) * | 2004-05-19 | 2005-12-02 | Toshiba Corp | Refrigerator |
| US20070137226A1 (en) * | 2005-12-21 | 2007-06-21 | Samsung Electronics Co., Ltd. | Refrigerator and method for controlling the refrigerator |
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| JP2013060907A (en) * | 2011-09-14 | 2013-04-04 | Panasonic Corp | Compressor control device |
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| JP2014031947A (en) * | 2012-08-03 | 2014-02-20 | Mitsubishi Electric Corp | Refrigerator-freezer |
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