CN108800725B - Refrigeration system, refrigeration equipment, refrigeration control method and storage medium - Google Patents
Refrigeration system, refrigeration equipment, refrigeration control method and storage medium Download PDFInfo
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- CN108800725B CN108800725B CN201810636197.6A CN201810636197A CN108800725B CN 108800725 B CN108800725 B CN 108800725B CN 201810636197 A CN201810636197 A CN 201810636197A CN 108800725 B CN108800725 B CN 108800725B
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- 238000005057 refrigeration Methods 0.000 title claims abstract description 192
- 238000000034 method Methods 0.000 title claims abstract description 37
- 238000007710 freezing Methods 0.000 claims abstract description 188
- 230000008014 freezing Effects 0.000 claims abstract description 188
- 238000001816 cooling Methods 0.000 claims abstract description 30
- 230000009467 reduction Effects 0.000 claims description 35
- 230000008859 change Effects 0.000 claims description 16
- 238000004590 computer program Methods 0.000 claims description 7
- 239000003507 refrigerant Substances 0.000 claims description 4
- 238000005265 energy consumption Methods 0.000 abstract description 11
- 230000002035 prolonged effect Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000006870 function Effects 0.000 description 5
- 230000001360 synchronised effect Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- 230000002441 reversible effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 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
- F25D19/00—Arrangement or mounting of refrigeration units with respect to devices or objects to be refrigerated, e.g. infrared detectors
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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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- Combustion & Propulsion (AREA)
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- Mechanical Engineering (AREA)
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- General Engineering & Computer Science (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
- Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
Abstract
The invention discloses a refrigeration system, refrigeration equipment, a refrigeration control method and a storage medium, wherein the refrigeration system comprises a compressor, a condenser, a throttling device, a freezing evaporator, a refrigerating evaporator, a freezing fan, a refrigerating fan, a temperature sensor and a controller, wherein the compressor, the condenser, the throttling device, the freezing evaporator and the refrigerating evaporator are sequentially connected in series; the temperature sensor is used for respectively acquiring freezing temperature and refrigerating temperature; the controller is used for obtaining the freezing and cooling speed according to the freezing temperature, obtaining the refrigerating and cooling speed according to the refrigerating temperature, and respectively controlling the on-off ratio of the freezing fan and the on-off ratio of the refrigerating fan according to the freezing requirement, the refrigerating requirement, the freezing and cooling speed and the refrigerating and cooling speed. The system, the equipment and the method can reduce the cost of the system, reduce the energy consumption and prolong the service life of the fan.
Description
Technical Field
The invention belongs to the technical field of electric appliance manufacturing, and particularly relates to a refrigerating system, refrigerating equipment comprising the refrigerating system, a refrigerating control method and a storage medium.
Background
Currently, for the freezing and refrigerating control of a refrigeration apparatus, in the related art, as shown in fig. 1, a refrigerant is led to a refrigerating evaporator and a freezing evaporator respectively through solenoid valves to realize the respective refrigeration of the refrigeration and the freezing. When the refrigeration needs, the refrigerant is led to the refrigeration evaporator, the refrigeration fan is continuously started, and when the refrigeration needs, the refrigerant is led to the refrigeration evaporator, and the refrigeration fan is continuously started.
However, based on the refrigeration system shown in fig. 1, the system cost is increased by adopting the electromagnetic valve, and the electromagnetic valve is a moving part driven by the stepping motor, so that the reliability is low, the installation is complicated, and the production cost and the maintenance cost of the system are increased; when refrigeration or freezing is required, the corresponding fan can continuously operate, and the service life of the fan is shortened.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art.
To this end, a first object of the present invention is to provide a refrigeration system which can reduce the cost and ensure the service life of the fan.
A second object of the invention is to propose a refrigeration plant comprising such a refrigeration system.
A third object of the present invention is to provide a refrigeration control method.
A fourth object of the invention is to propose a storage medium.
In order to achieve the above object, a refrigeration system according to an embodiment of a first aspect of the present invention includes: the refrigeration system comprises a compressor, a condenser, a throttling device, a freezing evaporator, a refrigeration evaporator, a freezing fan and a refrigeration fan, wherein the compressor, the condenser, the throttling device, the freezing evaporator and the refrigeration evaporator are sequentially connected in series; the temperature sensor is used for respectively acquiring freezing temperature and refrigerating temperature; the controller is used for obtaining freezing and cooling speed according to freezing temperature, obtaining refrigerating and cooling speed according to refrigerating temperature, and controlling the starting and stopping ratio of the freezing fan and the starting and stopping ratio of the refrigerating fan according to freezing demand, refrigerating demand, freezing and cooling speed and refrigerating and cooling speed respectively.
According to the refrigeration system provided by the embodiment of the invention, the refrigeration evaporator and the refrigeration evaporator are connected in series, compared with a parallel connection mode, the electromagnetic valve can be saved, the cost is reduced, the refrigeration and the refrigeration are realized simultaneously, the residual cold quantity of the refrigeration evaporator can be reused, the energy consumption is reduced, and compared with the control of the continuous operation of the fan, the startup and shutdown ratio of the fan is dynamically adjusted, and the service life of the fan can be prolonged.
In some embodiments, the controller is specifically configured to control the on-off ratio of the freezing fan according to a freezing demand, a refrigerating demand, a freezing cooling rate and a refrigerating cooling rate, and when the freezing demand is detected, control the on-off ratio of the freezing fan to be a highest allowable freezing on-off ratio; or when the freezing demand is detected and the refrigerating demand is detected, further judging whether the freezing temperature reduction speed is greater than the refrigerating temperature reduction speed, if so, reducing the start-stop ratio of the freezing fan, and if not, improving the start-stop ratio of the freezing fan.
In some embodiments, the controller is specifically configured to control the on-off ratio of the refrigeration fan according to a freezing demand, a refrigeration demand, a freezing cooling rate and a refrigeration cooling rate, and when the refrigeration demand is detected, control the on-off ratio of the refrigeration fan to be a highest allowable refrigeration on-off ratio; or when the refrigerating requirement is detected and the freezing requirement is detected, further judging whether the refrigerating temperature-reducing speed is greater than the freezing temperature-reducing speed, if so, reducing the start-stop ratio of the refrigerating fan, and if not, improving the start-stop ratio of the refrigerating fan.
In some embodiments, the refrigeration system further comprises a variable temperature air duct and a damper, wherein the variable temperature air duct is communicated with a variable temperature chamber and a freezing chamber of the refrigeration equipment or communicated with the variable temperature chamber and a refrigerating chamber; the controller is further used for controlling the rotating speeds of the air door and the freezing fan according to the temperature change requirement and the freezing requirement, or controlling the rotating speeds of the air door and the refrigerating fan according to the temperature change requirement and the refrigerating requirement, and matching refrigeration of each compartment can be achieved.
In order to achieve the above object, a refrigeration device according to an embodiment of the second aspect of the present invention includes the refrigeration system according to the embodiment of the first aspect.
According to the refrigeration equipment provided by the embodiment of the invention, the refrigeration system provided by the embodiment of the invention is adopted, so that the cost can be reduced, the service life of the fan can be prolonged, and the energy consumption can be reduced.
In order to achieve the above object, a refrigeration control method according to an embodiment of a third aspect of the present invention is a refrigeration control method in which a refrigeration system includes a compressor, a condenser, a throttling device, a freezing evaporator, a refrigerating evaporator, a freezing fan, and a refrigerating fan, the compressor, the condenser, the throttling device, the freezing evaporator, and the refrigerating evaporator are sequentially connected in series, the refrigeration control method including: respectively collecting freezing temperature and refrigerating temperature; obtaining a freezing temperature reduction speed according to the freezing temperature and obtaining a refrigerating temperature reduction speed according to the refrigerating temperature; and respectively controlling the starting and stopping ratio of the freezing fan and the starting and stopping ratio of the refrigerating fan according to the freezing requirement, the refrigerating requirement, the freezing temperature reduction speed and the refrigerating temperature reduction speed.
According to the refrigeration control method provided by the embodiment of the invention, the refrigeration evaporator and the cold storage evaporator in the refrigeration system are connected in series, so that the cost of the refrigeration system can be reduced, the energy consumption is reduced, the start and stop of the fan are controlled, and the service life of the fan can be prolonged compared with the continuous operation.
In some embodiments, the controlling the on-off ratio of the freezing fan according to the freezing demand, the refrigerating demand, the freezing temperature reduction speed, and the refrigerating temperature reduction speed specifically includes: when the refrigeration demand is detected, controlling the start-stop ratio of the refrigeration fan to be the highest allowable refrigeration start-stop ratio; or when the freezing demand is detected and the refrigerating demand is detected, further judging whether the freezing temperature reduction speed is greater than the refrigerating temperature reduction speed, if so, reducing the start-stop ratio of the freezing fan, and if not, improving the start-stop ratio of the freezing fan.
In some embodiments, the controlling the on-off ratio of the refrigeration fan according to the freezing demand, the refrigeration demand, the freezing temperature reduction speed, and the refrigeration temperature reduction speed specifically includes: when the refrigeration demand is detected, controlling the start-stop ratio of the refrigeration fan to be the highest allowable refrigeration start-stop ratio; or when the refrigerating requirement is detected and the freezing requirement is detected, further judging whether the refrigerating temperature-reducing speed is greater than the freezing temperature-reducing speed, if so, reducing the start-stop ratio of the refrigerating fan, and if not, improving the start-stop ratio of the refrigerating fan.
In some embodiments, the refrigeration system further includes a variable temperature air duct and a damper, the variable temperature air duct communicates with a variable temperature chamber and a freezing chamber of the refrigeration equipment or communicates with the variable temperature chamber and the refrigerating chamber, and the refrigeration control method further includes: controlling the rotating speeds of the air door and the refrigerating fan according to the temperature change requirement and the refrigerating requirement; or the rotating speeds of the air door and the refrigerating fan are controlled according to the temperature change requirement and the refrigerating requirement.
In order to achieve the above object, a non-transitory computer-readable storage medium according to a fourth aspect of the present invention stores thereon a computer program that, when executed by a processor, implements the refrigeration control method.
According to the non-transitory computer-readable storage medium of an embodiment of the present invention, a computer program that can implement the above refrigeration control method is stored, and data support can be provided for implementation of the refrigeration control method.
Drawings
Fig. 1 is a block diagram of a refrigeration system in the related art;
FIG. 2 is a block diagram of a refrigeration system according to an embodiment of the present invention;
FIG. 3 is a flow chart of controlling the on-off ratio of a freezing fan according to one embodiment of the present invention;
FIG. 4 is a flow chart of controlling the on-off ratio of the refrigeration fan according to one embodiment of the present invention;
FIG. 5 is a block diagram of a refrigeration appliance according to an embodiment of the present invention;
fig. 6 is a flowchart of a refrigeration control method according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
A refrigeration system according to an embodiment of the first aspect of the invention is described below with reference to the drawings.
Fig. 2 is a block diagram of a refrigeration system according to an embodiment of the present invention, and as shown in fig. 2, the refrigeration system 100 according to the embodiment of the present invention includes a compressor 10, a condenser 20, a throttling device 30, a freezing evaporator 40, a refrigerating evaporator 50, a freezing fan 60 and a refrigerating fan 70, a temperature sensor (not shown), and a controller (not shown).
The compressor 10, the condenser 20, the throttling device 30, the freezing evaporator 40 and the refrigerating evaporator 50 are sequentially connected in series, the freezing evaporator 40 and the refrigerating evaporator 50 are connected in series, electromagnetic valves are removed, the cost is reduced, double-system simultaneous refrigeration is realized, the stability of the system is improved, the reutilization of the residual cold of the freezing evaporator 40 can be realized, the energy utilization efficiency is improved, and the energy consumption is reduced. The temperature sensor is used for respectively collecting freezing temperature and refrigerating temperature; the controller is used for obtaining a freezing and cooling speed according to the freezing temperature, obtaining a refrigerating and cooling speed according to the refrigerating temperature, and respectively controlling the on-off ratio of the freezing fan 60 and the on-off ratio of the refrigerating fan 70 according to the freezing requirement, the refrigerating requirement, the freezing and cooling speed and the refrigerating and cooling speed.
Specifically, in the embodiment of the present invention, when a refrigeration demand or a freezing demand is detected, the compressor 10 is controlled to start, and further, the on-off ratio of the freezing fan 60 and the refrigerating fan 70 is dynamically adjusted by the PID algorithm according to the freezing demand, the refrigeration demand, the freezing temperature reduction speed, and the refrigerating temperature reduction speed, so as to achieve balanced refrigeration of freezing and refrigerating.
According to the refrigeration system 100 of the embodiment of the invention, by adopting the form that the freezing evaporator 40 and the refrigerating evaporator 50 are connected in series, compared with the parallel connection mode, the electromagnetic valve can be saved, the cost is reduced, the simultaneous refrigeration of freezing and refrigerating is realized, the residual cold quantity of the freezing evaporator 40 can be reused, the energy consumption is reduced, and compared with the control of the continuous operation of the fan, the startup and shutdown ratio of the fan is dynamically adjusted, and the service life of the fan can be prolonged.
Further, in some embodiments, the controller, when controlling the on-off ratio of the freezing fan according to the freezing demand, the refrigerating demand, the freezing and refrigerating temperature reduction rates, is specifically configured to, when the freezing demand is detected, control the on-off ratio of the freezing fan 60 to the highest allowable freezing on-off ratio to achieve freezing to the freezing temperature. Or when the freezing demand is detected and the refrigerating demand is detected, namely, when the refrigerating is required at the same time, whether the freezing and cooling speed is greater than the refrigerating and cooling speed is further judged, if yes, the on-off ratio of the freezing fan 60 is reduced if the compartment refrigerating is not matched, and if not, the on-off ratio of the freezing fan 60 is improved if the compartment refrigerating is not matched, specifically, the on-off ratio of the freezing fan 60 can be dynamically adjusted through a PID algorithm, so that the compartment is matched for refrigerating, namely, the temperatures of the freezing compartment and the refrigerating compartment are dynamically adjusted to meet the refrigerating demands of the compartments, and the refrigerating and cooling simultaneous refrigerating control is realized.
Fig. 3 is a flow chart of dynamic adjustment of a freezing fan according to an embodiment of the present invention, as shown in fig. 3, specifically including:
s100, judging whether the compressor is started, if so, going to step S110, otherwise, going to step S140.
S110, judging whether a refrigeration demand is detected, for example, a refrigeration compartment needs to be refrigerated, if so, entering step S120, otherwise, entering step S150.
S120, judging whether a refrigerating requirement is detected, for example, a refrigerating compartment needs to be refrigerated, if so, going to step S130, otherwise, going to step S160.
S130, judging whether the freezing temperature reduction speed is larger than the refrigerating temperature reduction speed, if so, entering the step S180, otherwise, entering the step S170.
And S140, the freezing fan is in a closed state.
And S150, controlling the start-stop ratio of the freezing fan to be the lowest allowable freezing start-stop ratio so as to maintain the freezing temperature.
And S160, controlling the start-stop ratio of the freezing fan to be the highest allowable freezing start-stop ratio so as to refrigerate the freezing chamber and meet the freezing requirement.
And S170, increasing the starting-stopping ratio of the freezing fan to enable the temperature drop of the compartment to be synchronous as much as possible, so as to realize matching refrigeration.
And S180, reducing the on-off ratio of the freezing fan to enable the temperature of the compartment to be synchronous as much as possible, so as to realize matching refrigeration.
Further, in some embodiments, the controller is specifically configured to control the on-off ratio of the refrigeration fan according to a freezing demand, a refrigeration demand, a freezing cooling rate and a refrigeration cooling rate, and when the refrigeration demand is detected, control the on-off ratio of the refrigeration fan to be a highest allowable refrigeration on-off ratio; or when the refrigeration demand is detected and the freezing demand is detected, whether the refrigeration cooling speed is greater than the freezing cooling speed is further judged, if yes, the start-stop ratio of the refrigeration fan is reduced, and if not, the start-stop ratio of the refrigeration fan is improved, specifically, the start-stop ratio of the refrigeration fan 70 can be dynamically adjusted through a PID algorithm, so that the compartment is matched for refrigeration.
Fig. 4 is a flowchart of dynamic adjustment of a refrigeration blower according to an embodiment of the present invention, as shown in fig. 4, specifically including:
s200, judging whether the compressor is started, if so, going to step S210, otherwise, going to step S240.
S210, judging whether a refrigeration demand is detected, for example, a refrigeration compartment needs to be refrigerated, if so, entering the step S220, otherwise, entering the step S250.
S220, judging whether a refrigeration demand is detected, for example, a refrigeration compartment needs to be refrigerated, if so, entering step S230, otherwise, entering step S260.
And S230, judging whether the refrigerating and cooling speed is greater than the freezing and cooling speed, if so, entering the step S280, otherwise, entering the step S270.
And S240, the refrigerating fan is in a closed state.
And S250, controlling the start-stop ratio of the refrigerating fan to be the lowest allowable refrigerating start-stop ratio so as to maintain the refrigerating temperature.
And S260, controlling the start-stop ratio of the refrigerating fan to be the highest allowable freezing start-stop ratio so as to refrigerate the refrigerating chamber and meet the refrigerating requirement.
And S270, increasing the on-off ratio of the refrigerating fan to enable the temperature drop of the compartment to be synchronous as much as possible, so as to realize matching refrigeration.
And S280, reducing the on-off ratio of the refrigerating fan to enable the temperature of the compartment to be synchronous as much as possible so as to realize matching refrigeration.
It can be understood that, when refrigeration is performed, as shown in fig. 3 and 4, the freezing fan 60 and the refrigerating fan 70 are respectively controlled, and by dynamically adjusting the on-off ratio of the fans, matching refrigeration of the freezing chamber and the refrigerating chamber is achieved, so that full utilization of energy is achieved, and energy consumption is reduced.
In some embodiments of the invention, the refrigeration equipment can also be provided with a temperature-variable chamber and other chambers, and the air supply amount to the temperature-variable chamber can be adjusted by adjusting the rotating speed of the fan through PID (proportion integration differentiation) according to the above matching control on freezing and refrigeration, so that the matching refrigeration of the temperature-variable chamber and the freezing or refrigerating chamber is realized.
Specifically, taking the refrigeration control of the variable temperature chamber as an example, in the embodiment, the refrigeration system 100 further includes a variable temperature air duct and an air door, the variable temperature air duct communicates with the variable temperature chamber and the freezing chamber of the refrigeration device, or communicates the variable temperature chamber and the refrigerating chamber, and the air door can realize the communication or isolation of the variable temperature air duct, so as to realize the refrigeration of the variable temperature chamber. The controller is also used for controlling the air door and the rotating speed of the freezing fan 60 according to the temperature change requirement and the freezing requirement, for example, the rotating speed of the freezing fan 60 and the opening degree of the air door are adjusted through a PID algorithm according to the temperature of the freezing chamber and the temperature of the temperature change chamber so as to adjust the air supply quantity and realize the matched refrigeration of the freezing chamber and the temperature change chamber; or, the rotational speed of the air door and the refrigeration fan 70 is controlled according to the temperature change requirement and the refrigeration requirement, for example, the rotational speed of the refrigeration fan 70 and the opening degree of the air door are adjusted by a PID algorithm according to the temperature of the refrigerating chamber and the temperature of the temperature change chamber to adjust the air supply amount, so as to realize the matched refrigeration of the refrigerating chamber and the temperature change chamber.
In summary, in the refrigeration system 100 according to the embodiment of the present invention, the refrigeration evaporator 40 and the refrigeration evaporator 50 are connected in series, so that the electromagnetic valve can be omitted, the cost is saved, the remaining cooling capacity of the refrigeration evaporator 40 can be reused, the energy consumption is reduced, and the start-stop ratio of each fan is dynamically adjusted during refrigeration control, which can prolong the service life of the fan compared with continuous start-up, and the matching refrigeration of each compartment can be realized by dynamically adjusting the start-stop ratio of each fan, thereby improving the energy utilization efficiency and reducing the energy consumption.
A refrigeration device according to an embodiment of the second aspect of the present invention will be described below with reference to the accompanying drawings.
Fig. 5 is a block diagram of a refrigeration apparatus according to an embodiment of the present invention, and as shown in fig. 5, a refrigeration apparatus 1000 according to an embodiment of the present invention includes the refrigeration system 100 according to the above embodiment, and the specific structure and operation of the refrigeration system 100 are described with reference to the above embodiment of the first aspect.
According to the refrigeration equipment 1000 of the embodiment of the invention, by adopting the refrigeration system 100 of the above embodiment, the cost can be reduced, the service life of the fan can be prolonged, and the energy consumption can be reduced.
A refrigeration control method according to an embodiment of the third aspect of the invention is described below with reference to the drawings.
In an embodiment of the present invention, referring to fig. 2, the refrigeration system includes a compressor, a condenser, a throttling device, a freezing evaporator, a refrigerating evaporator, a freezing fan and a refrigerating fan, and the compressor, the condenser, the throttling device, the freezing evaporator and the refrigerating evaporator are connected in series in sequence.
Fig. 6 is a flowchart of a refrigeration control method according to an embodiment of the present invention, as shown in fig. 6, specifically including:
and S1, respectively collecting the freezing temperature and the refrigerating temperature.
And S2, obtaining a freezing temperature reduction speed according to the freezing temperature and obtaining a refrigerating temperature reduction speed according to the refrigerating temperature.
And S3, respectively controlling the on-off ratio of the freezing fan and the on-off ratio of the refrigerating fan according to the freezing requirement, the refrigerating requirement, the freezing temperature reduction speed and the refrigerating temperature reduction speed.
In some embodiments of the invention, regarding the on-off ratio control of the freezing fan, when the freezing demand is detected, the on-off ratio of the freezing fan is controlled to be the highest allowable freezing on-off ratio; or when the freezing demand is detected and the refrigerating demand is detected, whether the freezing temperature reduction speed is larger than the refrigerating temperature reduction speed is further judged, if yes, the starting and stopping ratio of the freezing fan is reduced, and if not, the starting and stopping ratio of the freezing fan is improved.
In some embodiments, with respect to on-off ratio control of the refrigeration fan, when a refrigeration demand is detected, controlling the on-off ratio of the refrigeration fan to a highest allowable refrigeration on-off ratio; or when the refrigerating requirement is detected and the freezing requirement is detected, whether the refrigerating temperature-reducing speed is larger than the freezing temperature-reducing speed is further judged, if yes, the starting and stopping ratio of the refrigerating fan is reduced, and if not, the starting and stopping ratio of the refrigerating fan is improved.
When refrigeration control is carried out, the dynamic control of the on-off ratio of the freezing fan and the refrigerating fan is combined, the simultaneous refrigeration control of freezing and refrigerating is realized, and the matched refrigeration of the compartments is realized.
According to the refrigeration control method provided by the embodiment of the invention, the refrigeration evaporator and the cold storage evaporator in the refrigeration system are connected in series, so that the cost of the refrigeration system can be reduced, the energy consumption is reduced, the start and stop of the fan are controlled, and the service life of the fan can be prolonged compared with the continuous operation.
In some embodiments of the present invention, the refrigeration system further includes a variable temperature air duct and an air door, the variable temperature air duct communicates with the variable temperature chamber and the freezing chamber of the refrigeration apparatus or communicates with the variable temperature chamber and the refrigerating chamber, and the refrigeration control method further includes: controlling the rotating speeds of the air door and the refrigerating fan according to the temperature change requirement and the refrigerating requirement; or the rotating speeds of the air door and the refrigerating fan are controlled according to the temperature change requirement and the refrigerating requirement. Specifically, the rotating speed of the fan can be dynamically controlled through a PID algorithm, and matching refrigeration of each chamber is realized.
Based on the refrigeration control method of the above embodiment, a non-transitory computer-readable storage medium of the fourth aspect embodiment of the present invention, on which a computer program is stored, the computer program, when executed by a processor, implementing the refrigeration control method of the above third aspect embodiment.
According to the non-transitory computer-readable storage medium of an embodiment of the present invention, a computer program that can implement the above refrigeration control method is stored, and data support can be provided for implementation of the refrigeration control method.
It should be noted that in the description of this specification, any process or method description 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 that the scope of the preferred embodiments of the present invention includes additional implementations 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 present invention.
The logic and/or steps represented in the flowcharts or otherwise described herein, e.g., an ordered listing of executable instructions that can be considered to implement logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium could even be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, via for instance optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner if necessary, and then stored in a computer memory.
It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and when the program is executed, the program includes one or a combination of the steps of the method embodiments.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean 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 invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. A refrigeration system, comprising:
the refrigeration system comprises a compressor, a condenser, a throttling device, a freezing evaporator, a refrigeration evaporator, a freezing fan and a refrigeration fan, wherein the compressor, the condenser, the throttling device, the freezing evaporator and the refrigeration evaporator are sequentially connected in series;
the temperature sensor is used for respectively acquiring freezing temperature and refrigerating temperature;
the controller is used for obtaining freezing and cooling speed according to freezing temperature, obtaining refrigerating and cooling speed according to refrigerating temperature, and controlling the starting and stopping ratio of the freezing fan and the starting and stopping ratio of the refrigerating fan according to freezing demand, refrigerating demand, freezing and cooling speed and refrigerating and cooling speed respectively.
2. The refrigeration system of claim 1, wherein the controller is specifically configured to control the on-off ratio of the freezing fan based on a freezing demand, a refrigerating demand, a freezing cool-down rate, and a refrigerating cool-down rate,
when the refrigeration demand is detected, controlling the start-stop ratio of the refrigeration fan to be the highest allowable refrigeration start-stop ratio;
or when the freezing demand is detected and the refrigerating demand is detected, further judging whether the freezing temperature reduction speed is greater than the refrigerating temperature reduction speed, if so, reducing the start-stop ratio of the freezing fan, and if not, improving the start-stop ratio of the freezing fan.
3. The refrigeration system of claim 1, wherein the controller is specifically configured to control the on-off ratio of the refrigeration blower based on a freezing demand, a refrigeration demand, a freezing cool-down rate, and a refrigeration cool-down rate,
when the refrigeration demand is detected, controlling the start-stop ratio of the refrigeration fan to be the highest allowable refrigeration start-stop ratio;
or when the refrigerating requirement is detected and the freezing requirement is detected, further judging whether the refrigerating temperature-reducing speed is greater than the freezing temperature-reducing speed, if so, reducing the start-stop ratio of the refrigerating fan, and if not, improving the start-stop ratio of the refrigerating fan.
4. The refrigerant system as set forth in claim 1,
the refrigerating system also comprises a variable temperature air channel and an air door, wherein the variable temperature air channel is communicated with a variable temperature chamber and a freezing chamber of refrigerating equipment or communicated with the variable temperature chamber and the refrigerating chamber;
the controller is further used for controlling the rotating speeds of the air door and the freezing fan according to the temperature change requirement and the freezing requirement, or controlling the rotating speeds of the air door and the refrigerating fan according to the temperature change requirement and the refrigerating requirement.
5. Refrigeration device, characterized in that it comprises a refrigeration system according to any of claims 1 to 4.
6. The refrigeration control method is characterized in that a refrigeration system comprises a compressor, a condenser, a throttling device, a freezing evaporator, a cold storage evaporator, a freezing fan and a cold storage fan, wherein the compressor, the condenser, the throttling device, the freezing evaporator and the cold storage evaporator are sequentially connected in series, and the refrigeration control method comprises the following steps:
respectively collecting freezing temperature and refrigerating temperature;
obtaining a freezing temperature reduction speed according to the freezing temperature and obtaining a refrigerating temperature reduction speed according to the refrigerating temperature;
and respectively controlling the starting and stopping ratio of the freezing fan and the starting and stopping ratio of the refrigerating fan according to the freezing requirement, the refrigerating requirement, the freezing temperature reduction speed and the refrigerating temperature reduction speed.
7. The refrigeration control method according to claim 6, wherein the controlling of the on-off ratio of the freezing fan according to the freezing demand, the refrigerating demand, the freezing temperature reduction speed, and the refrigerating temperature reduction speed specifically includes:
when the refrigeration demand is detected, controlling the start-stop ratio of the refrigeration fan to be the highest allowable refrigeration start-stop ratio;
or when the freezing demand is detected and the refrigerating demand is detected, further judging whether the freezing temperature reduction speed is greater than the refrigerating temperature reduction speed, if so, reducing the start-stop ratio of the freezing fan, and if not, improving the start-stop ratio of the freezing fan.
8. The refrigeration control method according to claim 6, wherein the controlling of the on/off ratio of the refrigerating fan according to the freezing demand, the refrigerating demand, the freezing temperature reduction speed, and the refrigerating temperature reduction speed specifically includes:
when the refrigeration demand is detected, controlling the start-stop ratio of the refrigeration fan to be the highest allowable refrigeration start-stop ratio;
or when the refrigerating requirement is detected and the freezing requirement is detected, further judging whether the refrigerating temperature-reducing speed is greater than the freezing temperature-reducing speed, if so, reducing the start-stop ratio of the refrigerating fan, and if not, improving the start-stop ratio of the refrigerating fan.
9. The refrigeration control method according to claim 6, wherein the refrigeration system further includes a temperature-varying air duct and a damper, the temperature-varying air duct communicates with a temperature-varying chamber and a freezing chamber of the refrigeration apparatus or communicates with the temperature-varying chamber and the refrigerating chamber, and the refrigeration control method further includes:
controlling the rotating speeds of the air door and the refrigerating fan according to the temperature change requirement and the refrigerating requirement;
or the rotating speeds of the air door and the refrigerating fan are controlled according to the temperature change requirement and the refrigerating requirement.
10. A non-transitory computer-readable storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the refrigeration control method according to any one of claims 6 to 9.
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| KR0149917B1 (en) * | 1994-11-11 | 1999-05-01 | 김광호 | Operation control arrangement for refrigerator of high efficiency multi-evaporator cycle |
| EP0791162B1 (en) * | 1994-11-11 | 2004-03-31 | Samsung Electronics Co., Ltd. | Refrigerator and control method therefor |
| ID17196A (en) * | 1996-03-14 | 1997-12-11 | Dow Chemical Co | ADHESIVE INGREDIENTS THAT CONTAIN OLEFIN POLYMER |
| CN203824142U (en) * | 2013-11-20 | 2014-09-10 | 中韩科技有限公司 | Double-circulating refrigerating system for side by side refrigerator |
| CN105222517B (en) * | 2015-11-06 | 2019-04-09 | 合肥华凌股份有限公司 | The control method of refrigerator, the control device of refrigerator and refrigerator |
| CN106802060B (en) * | 2017-01-22 | 2019-11-29 | 合肥华凌股份有限公司 | Refrigeration for refrigerator control method and control device and refrigerator |
| CN107830677B (en) * | 2017-11-21 | 2020-12-15 | 广州美的华凌冰箱有限公司 | Fan operation control method, control device, refrigeration equipment and storage medium |
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