CN111795535A - Refrigeration appliance and control method thereof - Google Patents

Refrigeration appliance and control method thereof Download PDF

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Publication number
CN111795535A
CN111795535A CN201910274826.XA CN201910274826A CN111795535A CN 111795535 A CN111795535 A CN 111795535A CN 201910274826 A CN201910274826 A CN 201910274826A CN 111795535 A CN111795535 A CN 111795535A
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CN
China
Prior art keywords
fan
compressor
rotation speed
speed
temperature
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201910274826.XA
Other languages
Chinese (zh)
Inventor
朱啟武
朱卫忠
刘翔宇
沈贵可
王宝阳
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BSH Electrical Appliances Jiangsu Co Ltd
Bo Xihua Electric Jiangsu Co Ltd
BSH Hausgeraete GmbH
Original Assignee
Bo Xihua Electric Jiangsu Co Ltd
BSH Hausgeraete GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bo Xihua Electric Jiangsu Co Ltd, BSH Hausgeraete GmbH filed Critical Bo Xihua Electric Jiangsu Co Ltd
Priority to CN201910274826.XA priority Critical patent/CN111795535A/en
Priority to PCT/EP2020/059403 priority patent/WO2020207899A1/en
Publication of CN111795535A publication Critical patent/CN111795535A/en
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
    • F25D11/02—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures
    • F25D11/022—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures with two or more evaporators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B49/00—Arrangement or mounting of control or safety devices
    • F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
    • F25B49/022—Compressor control arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
    • F25D17/06—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
    • F25D17/062—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation in household refrigerators
    • F25D17/065—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation in household refrigerators with compartments at different temperatures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
    • F25D17/06—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
    • F25D17/067—Evaporator fan units
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2600/00—Control issues
    • F25B2600/02—Compressor control
    • F25B2600/025—Compressor control by controlling speed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2600/00—Control issues
    • F25B2600/11—Fan speed control
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2600/00—Control issues
    • F25B2600/25—Control of valves
    • F25B2600/2511—Evaporator distribution valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2700/00—Sensing or detecting of parameters; Sensors therefor
    • F25B2700/17—Speeds
    • F25B2700/171—Speeds of the compressor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2700/00—Sensing or detecting of parameters; Sensors therefor
    • F25B2700/17—Speeds
    • F25B2700/172—Speeds of the condenser fan
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2700/00—Sensing or detecting of parameters; Sensors therefor
    • F25B2700/17—Speeds
    • F25B2700/173—Speeds of the evaporator fan
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2700/00—Sensing or detecting of parameters; Sensors therefor
    • F25B2700/21—Temperatures
    • F25B2700/2104—Temperatures of an indoor room or compartment
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B49/00—Arrangement or mounting of control or safety devices
    • F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B5/00—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity
    • F25B5/02—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity arranged in parallel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B5/00—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity
    • F25B5/04—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity arranged in series
    • 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
    • F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
    • F25D2317/06—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation
    • F25D2317/068—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by the fans
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2500/00—Problems to be solved
    • F25D2500/04—Calculation of parameters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2700/00—Means for sensing or measuring; Sensors therefor
    • F25D2700/12—Sensors measuring the inside temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2700/00—Means for sensing or measuring; Sensors therefor
    • F25D2700/14—Sensors measuring the temperature outside the refrigerator or freezer
    • 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
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers

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

Abstract

The invention provides a control method of a refrigeration appliance, which comprises the following steps: the compressor and the fan are operated to cool a storage space, and the rotational speed of the fan is adjusted in association with the temperature of the storage space or the rotational speed of the fan is adjusted in association with the rotational speed of the compressor. In the process of refrigerating the storage space, along with the temperature change of the storage space, the refrigerating capacity requirement of the storage space is changed, and correspondingly the rotating speed of the compressor can be changed, so that the rotating speed of the fan is adjusted based on the rotating speed change of the compressor, and the rotating speed of the fan is basically matched with the refrigerating capacity requirement of the storage space in real time.

Description

Refrigeration appliance and control method thereof
Technical Field
The invention relates to the technical field of refrigeration appliances, in particular to a household refrigerator and a control method thereof.
Background
In the prior art, in an air-cooled frequency conversion refrigerator control system, when a certain compartment of a refrigerator has a refrigeration demand, the refrigerator is started to refrigerate, a compressor, a condenser, a fan and the like are all started to work, and in the refrigeration process of the compartment, no matter a condenser fan or an evaporator fan is generally operated at a constant rotating speed.
Disclosure of Invention
One of the problems solved by the invention is how to solve the matching problem between the rotating speed of the fan and the change of the cold quantity requirement of the compartment in the refrigerating process of the compartment.
In order to solve the above problems, the present invention provides a method for controlling a refrigeration device, comprising: the compressor and the fan are operated to cool a storage space, and the rotation speed of the fan is adjusted in association with the temperature of the storage space.
In this way, during the refrigeration of the storage space, the cooling capacity requirement of the storage space changes with the temperature change of the storage space, so that the rotation speed of the fan is adjusted on the basis of the temperature change of the storage space, so that the rotation speed of the fan is matched with the cooling capacity requirement of the storage space in real time.
In order to solve the above problem, the present invention provides another control method for a refrigeration appliance, including: the compressor and the fan are operated to cool a storage space, and the rotational speed of the fan is adjusted in association with the rotational speed of the compressor.
In the process of refrigerating the storage space, along with the temperature change of the storage space, the refrigerating capacity requirement of the storage space is changed, and correspondingly the rotating speed of the compressor can be changed, so that the rotating speed of the fan is adjusted based on the rotating speed change of the compressor, and the rotating speed of the fan is basically matched with the refrigerating capacity requirement of the storage space in real time.
Further, the control method further includes: the rotational speed of the compressor is adjusted in association with the temperature of the storage space.
In the process of refrigerating the storage space, along with the temperature change of the storage space, the refrigerating capacity requirement of the storage space also changes, and correspondingly, the rotating speed of the compressor also can change.
Further, the fan includes a fan for delivering cool air generated from an evaporator to the storage space and/or a fan for cooling a condenser.
When the refrigerating requirement of the whole storage space is changed, the rotating speed of the compressor is correspondingly changed, and the fan for cooling the condenser and the fan for conveying cold air produced by the evaporator to the storage space are correspondingly synchronously adjusted so as to meet the change of heat exchange quantity and the refrigerating requirement, thereby ensuring the proper temperature of the condenser and the temperature of the evaporator and improving the refrigerating efficiency of the whole refrigerating system.
Further, the rotation speed of the fan is positively correlated with the temperature of the storage space.
The cooling capacity requirement of the storage space is correspondingly increased or decreased when the temperature of the storage space is increased or decreased, so that the fan speed is correspondingly adjusted to be increased or decreased.
Further, the adjusting of the rotation speed of the fan in association with the temperature of the storage space includes: the rotational speed of the fan is adjusted based on a difference between the temperature of the storage space and a reference temperature.
Further, the rotation speed adjustment amount of the fan is positively correlated with the difference.
The reference temperature may be set as a target set temperature of the storage space, and when the difference between the temperature of the storage space and the target set temperature is greater than zero and larger, it means that the greater the cooling capacity demand of the storage space, the greater the speed of the fan adjusted accordingly, and vice versa.
Further, the adjusting the rotation speed of the fan in association with the rotation speed of the compressor includes: and calculating and obtaining the rotating speed of the fan based on the rotating speed of the compressor.
A mathematical relation model is established between the rotating speed of the compressor and the rotating speed of the fan, and the rotating speed of the fan which changes synchronously with the rotating speed of the compressor is calculated according to the mathematical relation model.
Further, the adjusting the rotation speed of the fan in association with the rotation speed of the compressor includes: the rotational speed of the fan is obtained based on a one-to-one correspondence of different rotational speeds of the compressor and different rotational speeds of the fan.
The one-to-one correspondence relationship means that the control unit or the storage unit of the refrigeration appliance stores a plurality of sets of the rotation speeds of the compressors and the rotation speeds of the fans in one-to-one correspondence in advance, for example, the rotation speeds of the compressors include a 1 st compressor rotation speed and a 2 nd compressor rotation speed … … X-th compressor rotation speed which are continuously set from small to large, and the rotation speeds of the fans also include a 1 st fan rotation speed and a 2 nd fan rotation speed … … X-th fan rotation speed which are continuously set from small to large. The rotational speed of the fan changes once for every change of the rotational speed of the compressor, based on the one-to-one correspondence.
Further, the rotating speeds of the compressors comprise an Nth compressor rotating speed and an N +1 th compressor rotating speed which are continuously set from small to large; based on the corresponding relation, the rotating speeds of the fans comprise an Nth fan rotating speed and an N +1 th fan rotating speed which are continuously arranged from small to large.
Further, when the actual rotation speed of the compressor is between the nth compressor rotation speed and the N +1 th compressor rotation speed, the actual rotation speed of the fan is calculated based on the nth fan rotation speed and the N +1 th fan rotation speed, corresponding to the actual rotation speed of the compressor.
At this time, the actual rotating speed of the compressor does not belong to the rotating speeds of a plurality of groups of compressors which are in one-to-one correspondence and are stored in the control unit or the storage unit in advance, and therefore the actual rotating speed of the corresponding fan is obtained through certain calculation. When the actual rotating speed of the compressor is between the rotating speed of the Nth compressor and the rotating speed of the (N + 1) th compressor, the actual rotating speed of the compressor has a certain proportional relation between the rotating speed of the Nth compressor and the rotating speed of the (N + 1) th compressor, and the proportional relation is calculated by utilizing an interpolation method; the proportional relationship and the Nth fan speed and the (N + 1) th fan speed are used to calculate the actual fan speed between the Nth fan speed and the (N + 1) th fan speed, and particularly, the actual fan speed is also calculated by interpolation.
Further, the control method further includes: determining a maximum speed and a minimum speed of the fan in relation to an ambient temperature; and
when the adjusted rotating speed of the fan is greater than the maximum rotating speed, the fan runs at the maximum rotating speed; when the adjusted rotation speed of the compressor is less than the minimum rotation speed, the fan is operated at the minimum rotation speed.
Further, the control method further includes: when the temperature of the storage space increases, the rotation speed of the fan increases; when the temperature of the storage space is lowered, the rotation speed of the fan is also lowered; when the temperature of the storage space tends to be stable, the rotation speed of the fan also tends to be stable.
Further, the control method further includes: when the rotation speed of the compressor is increased, the rotation speed of the fan is increased; when the rotating speed of the compressor is reduced, the rotating speed of the fan is also reduced; when the rotation speed of the compressor tends to be stable, the rotation speed of the fan also tends to be stable.
In addition, the invention further provides a refrigeration appliance, which comprises a control unit, wherein the control unit controls the operation of the refrigeration appliance according to the control method of any one of the above.
The subject matter of any independent claim above may be combined with any subject matter or combination of subject matter of any dependent claims as may be permitted under the circumstances of technology to form new claimed subject matter.
Drawings
FIG. 1 is a schematic view of a refrigeration system of a refrigerator according to an embodiment of the present invention;
reference numerals: 100-a refrigerator; 10-a refrigeration system; 11-a first diverter valve; 12-a second diverter valve; 1-a freezing compartment; 2-a cold storage compartment; 3-freezing the greenhouse; 4-a compressor; 5-a condenser; 51-a condenser fan; 6-an ice-temperature compartment evaporator; 61-ice greenhouse fan; 7-refrigerating compartment evaporator; 8-a freezing compartment evaporator; 81-freezer compartment fan.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, a refrigerator appliance according to an embodiment of the present invention is provided as a household refrigerator having three storage spaces and side-by-side combination refrigerators which are independently refrigerated, respectively. The three independent storage spaces of the refrigerator 100 include a freezing compartment 1, two non-freezing compartments, i.e., a refrigerating compartment 2 located at the upper right of the refrigerator and an ice temperature compartment 3 located at the lower right of the refrigerator, a refrigerating system 10, and a control device (not shown) for controlling the refrigerating system 10. The refrigeration system includes a compressor 4, a condenser 5, a condenser fan 51, an evaporator and a fan, which are respectively independent to refrigerate the three storage spaces, and the control device includes three temperature sensors (not shown) which are respectively independent to detect the storage temperatures of the three storage spaces.
The refrigerating system 10 has three refrigeration cycles for independently refrigerating the above three storage spaces, respectively, and each storage space can independently control the temperature. The refrigeration cycle mainly refers to the circulation flow of the refrigerant in each element of the refrigeration system, for example, starting from the compressor 4, the refrigerant which releases the cold energy and absorbs the heat of the storage space is sucked in the form of gas by the compressor 4, and is compressed into the vapor of high temperature and high pressure to enter the condenser 5 through the pipe, and under the cooling of the condenser fan 51, the refrigerant gives off the heat to the outside air in the condenser 5 and is condensed into the liquid refrigerant of high pressure. Under the split of the first split valve 11 and the second split valve 12, the liquid refrigerant can be controlled to flow to the ice-temperature compartment evaporator 6, the cold-storage compartment evaporator 7 and the freezing compartment evaporator 8 respectively, so that the ice-temperature compartment 3, the cold-storage compartment 2 and the freezing compartment 1 are refrigerated independently respectively, and the temperature in the three storage spaces is reduced. The liquid refrigerant absorbs the heat of the storage space, is vaporized into vapor refrigerant and is sucked by the compressor 4 again, and the refrigerant enters the next cycle in this way.
The refrigerant flowing out of the ice-temperature compartment evaporator 6 and the refrigerating compartment evaporator 7 generally flows into the compressor 4 after flowing through the freezing compartment evaporator 8, because the refrigerant flowing out of the ice-temperature compartment evaporator 6 and the refrigerating compartment evaporator 7 also has a part of cold energy and can be used for absorbing the heat of the freezing compartment 1. The control device can control the flow direction of the refrigerant by controlling the first flow dividing valve 11 and the second flow dividing valve 12, so that the ice temperature chamber 3, the cold storage chamber 2 and the freezing chamber 1 can be independently controlled in temperature.
In the present embodiment, the normal set temperature of the freezing compartment 1 is 18 degrees below zero, the normal set temperature of the refrigerating compartment 2 is 2 to 6 degrees, and the set temperature of the freezing compartment 3 is 0 to 3 degrees. The freezing chamber 1 and the ice-temperature chamber 3 are both air-cooled, while the refrigerating chamber 2 is directly cooled, and both the air-cooled mode and the direct-cooled mode are refrigeration modes well known to those skilled in the art and will not be described herein.
In the ice compartment 3, an ice compartment evaporator 6 is disposed between a rear wall of the ice compartment 3 and an evaporator cover (not shown) (a space in which the evaporator is disposed may be referred to as an evaporator compartment), and an ice compartment fan 61 is disposed adjacent to and above the ice compartment evaporator 6. The cold air produced by the ice compartment evaporator 6 is blown by the ice compartment fan 61 into the ice compartment 3 to cool the same.
Similar to the structure of the ice-temperature compartment 3, the freezing compartment evaporator 8 is also disposed between the rear wall of the freezing compartment 3 and an evaporator cover (not shown), and a freezing compartment fan 81 is disposed near the upper side of the freezing compartment evaporator 8 to blow the cold air produced by the freezing compartment evaporator 8 into the freezing compartment 1.
In the existing air-cooled refrigerator control system, when a certain chamber is refrigerated according to the control rule of a fan, a corresponding fan is started and stopped at a constant rotating speed when a compressor is started and stopped. For example, when the compressor 4 is turned on while the freezing compartment 1 is refrigerating, the freezing compartment fan 81 and the condenser fan 51 are also started and operated at a constant rotational speed until the refrigeration is finished and stopped; similarly, when the compressor 4 is turned on while the ice compartment 3 is cooling, the condenser fan 51 of the ice compartment fan 61 is also turned on and operated at another constant rotational speed until the cooling is finished and stopped. Therefore, the rotating speed of the fan cannot be adjusted according to the cold quantity demand change of the compartment in the refrigeration process, so that the overall performance of the refrigerator refrigeration system cannot achieve the optimal matching effect. Therefore, the invention provides an improved refrigerator control method, and particularly improves the control rule of a fan in the refrigeration process, so that the overall performance of a refrigeration system of a refrigerator is further improved.
In one embodiment, an improved control method of a refrigerator is shown in fig. 2, and is described below by specific steps.
In step S101, cooling is started.
Generally, a temperature sensor for detecting a storage temperature in the compartment is installed in the compartment, and the detected storage temperature is fed back to the refrigerator control unit. If the current storage temperature is higher than the set temperature of the compartment, the refrigerator control unit starts cooling the compartment accordingly.
And step S102, starting the compressor and the fan to work.
After the refrigeration starts, the compressor of the refrigerator starts to work, the condenser and the condenser fan also start to work, and the evaporator fan which works for the compartment also works, so that cold air cooled by the evaporator is blown into the compartment to reduce the storage temperature of the compartment.
Step S103, comparing whether the storage temperature is less than or equal to the set temperature.
Whether to stop cooling and adjust the rotating speed of the fan are determined by the comparison result of the storage temperature obtained by real-time detection and the set temperature of the compartment.
When the detected storage temperature is less than or equal to the set temperature of the compartment, the compartment does not need to be cooled, and the operation of the compressor and the fan is stopped in step S104 and the cooling in step S105 is finished.
When the detected storage temperature is higher than the set temperature of the compartment, the compartment needs to be cooled further, and the process proceeds to step S106 to determine further.
Step S106, judging whether the storage temperature is changed.
When the detected storage temperature is not changed, it indicates that the cooling capacity of the supply compartment is appropriate at this time, and the rotation speed of the fan can be kept unchanged, and then the process jumps back to step S103 to continue the determination.
When the detected storage temperature changes, it indicates that the cooling capacity of the supply compartment must be adjusted, so as to proceed to step S107 to adjust the rotation speed of the fan, and then to return to step S103 to continue the determination.
Step S107, the rotation speed of the fan is adjusted.
Specifically, the rotation speed of the fan is positively correlated with the storage chamber temperature detected currently. If the temperature of the storage chamber obtained by the current detection is higher than that of the storage chamber obtained by the last detection, the cold quantity of the supply chamber needs to be increased at the moment, and the rotating speed of the fan can be correspondingly increased. If the temperature of the storage chamber obtained by the current detection is lower than that obtained by the last detection, the requirement of reducing the cold quantity of the supply chamber at the moment is shown, and the rotating speed of the fan can be correspondingly reduced.
Further, the rotation speed of the fan may be adjusted based on a difference between the currently detected temperature of the storage compartment and a reference temperature, which may be, for example, a set temperature of the compartment. The rotation speed of the fan is positively correlated with the difference. If the difference value between the storage chamber temperature detected currently and a reference temperature is increased, it indicates that the cold quantity of the supply chamber needs to be increased at the moment, and accordingly the rotating speed of the fan can be increased, namely the rotating speed regulating quantity of the fan is increased. If the difference between the storage chamber temperature detected currently and a reference temperature is reduced, it indicates that the cooling capacity of the supply chamber needs to be reduced at this time, and accordingly the rotation speed of the fan can be reduced, that is, the rotation speed adjustment amount of the fan is reduced.
The present embodiment will be further described below by taking the cooling control process of the freezing compartment 1 and the ice-temperature compartment 3 in fig. 1 as an example.
When the compressor 4 is turned on when the freezing compartment 1 performs cooling, the freezing compartment fan 81 and the condenser fan 51 are also started, and the rotation speeds of the freezing compartment fan 81 and the condenser fan 51 are changed as the storage temperature of the freezing compartment 1 changes. If the storage room temperature of the freezing room 1 obtained by the current detection is higher than the storage room temperature of the freezing room 1 obtained by the last detection, it indicates that the cooling capacity for supplying the freezing room 1 needs to be increased at this time, and accordingly, the rotating speeds of the freezing room fan 81 and the condenser fan 51 can be increased. If the temperature of the storage room of the freezing room 1 obtained by the current detection is lower than the temperature of the storage room of the freezing room 1 obtained by the last detection, it indicates that the cooling capacity supplied to the freezing room 1 needs to be reduced at this time, and accordingly, the rotating speeds of the freezing room fan 81 and the condenser fan 51 can be adjusted to be lower. Similarly, when the compressor 4 is also turned on when the ice compartment 3 cools, the condenser fan 51 of the ice compartment fan 61 is also turned on, and the rotational speed of the condenser fan 51 of the ice compartment fan 61 is also changed in accordance with the change in the storage temperature of the ice compartment 3.
Therefore, the rotating speed of the fan is adjusted according to the change of the cold quantity requirement of the compartment in the refrigerating process, so that the overall performance of the refrigerator refrigerating system can achieve the optimal matching effect.
In another embodiment, an improved control method of a refrigerator is shown in fig. 3, and is described below by specific steps.
In step S201, cooling is started.
If the storage temperature detected and obtained by the current compartment is higher than the set temperature of the compartment, the refrigerator control unit starts the refrigeration of the compartment according to the storage temperature.
Step S202, the compressor and the fan are started to work.
After the refrigeration starts, the compressor of the refrigerator starts to work, the condenser and the condenser fan also start to work, and the evaporator fan which works for the compartment also works, so that cold air cooled by the evaporator is blown into the compartment to reduce the storage temperature of the compartment.
In step S203, the compressor rotation speed is adjusted based on the storage temperature.
During the refrigerating process of the compartment, the storage temperature of the compartment changes along with the refrigerating process, which shows that the refrigerating capacity requirement of the compartment also changes in the whole process, so that the rotating speed of the compressor can be correspondingly adjusted to match the refrigerating capacity requirement of the compartment. When the storage temperature of the compartment rises, the cold quantity demand of the compartment increases, and the rotating speed of the compressor is correspondingly increased. When the storage temperature of the compartment is reduced, the cold requirement of the compartment is reduced, and the rotating speed of the compressor is correspondingly reduced.
In step S204, the fan speed is adjusted based on the compressor speed.
In the refrigerating process of the compartment, the storage temperature of the compartment is changed, the rotating speed of the compressor is also changed, and the refrigerating capacity requirement of the compartment is also changed, so that the rotating speed of the fan can be correspondingly adjusted to match the refrigerating capacity requirement of the compartment. When the rotating speed of the compressor is increased, the cold requirement of the compartment is increased, and the rotating speed of the fan is correspondingly increased. When the speed of the compressor is reduced, the cold requirement of the compartment is reduced, and the speed of the fan is correspondingly reduced.
Further, the rotation speed of the fan is obtained by calculation based on the rotation speed of the compressor. A mathematical relation model is established between the rotating speed of the compressor and the rotating speed of the fan, and the rotating speed of the fan which changes synchronously with the rotating speed of the compressor is calculated according to the mathematical relation model.
Further, the rotation speed of the fan is obtained based on a one-to-one correspondence relationship between different rotation speeds of the compressor and different rotation speeds of the fan. The one-to-one correspondence relationship means that the rotation speeds of the compressors and the rotation speeds of the fans are stored in advance in a control unit or a storage unit of the refrigeration appliance in a one-to-one correspondence relationship, for example, the rotation speeds of the compressors include a 1 st compressor rotation speed, a 2 nd compressor rotation speed … … nth compressor rotation speed, and an N +1 st compressor rotation speed … … xth compressor rotation speed which are continuously set from small to large, and the rotation speeds of the fans also include a 1 st fan rotation speed, a 2 nd fan rotation speed … … nth fan rotation speed, and an N +1 st fan rotation speed … … xth fan rotation speed which are continuously set from small to large. The rotational speed of the fan changes once for every change of the rotational speed of the compressor, based on the one-to-one correspondence.
Further, when the actual rotation speed of the compressor is between any two of the above-mentioned consecutively set compressor rotation speeds, for example, the actual rotation speed of the compressor is between the nth compressor rotation speed and the N +1 th compressor rotation speed, the actual rotation speed of the fan is calculated based on the nth fan rotation speed and the N +1 th fan rotation speed, corresponding to the actual rotation speed of the compressor.
At this time, the actual rotating speed of the compressor does not belong to the rotating speeds of a plurality of groups of compressors which are in one-to-one correspondence and are stored in the control unit or the storage unit in advance, and therefore the actual rotating speed of the corresponding fan is obtained through certain calculation. When the actual rotating speed of the compressor is between the rotating speed of the Nth compressor and the rotating speed of the (N + 1) th compressor, the actual rotating speed of the compressor has a certain proportional relation between the rotating speed of the Nth compressor and the rotating speed of the (N + 1) th compressor, and the proportional relation is calculated by utilizing an interpolation method; the proportional relationship and the Nth fan speed and the (N + 1) th fan speed are used to calculate the actual fan speed between the Nth fan speed and the (N + 1) th fan speed, and particularly, the actual fan speed is also calculated by interpolation.
The present embodiment will be further described below by taking the cooling control process of the freezing compartment 1 and the ice-temperature compartment 3 in fig. 1 as an example.
When the compressor 4 is turned on when the freezing compartment 1 performs cooling, the freezing compartment fan 81 and the condenser fan 51 are also started, and the rotation speed of the compressor 4 is changed according to the change of the storage temperature of the freezing compartment 1, and at the same time, the rotation speeds of the freezing compartment fan 81 and the condenser fan 51 are also changed according to the change of the rotation speed of the compressor 4. If the storage room temperature of the freezing room 1 obtained by the current detection is higher than the storage room temperature of the freezing room 1 obtained by the last detection, it means that the cooling capacity supplied to the freezing room 1 needs to be increased at this time, so the rotation speed of the compressor 4 is increased, and accordingly the rotation speeds of the freezing room fan 81 and the condenser fan 51 can be increased. If the storage room temperature of the freezing room 1 obtained by the current detection is lower than the storage room temperature of the freezing room 1 obtained by the last detection, it means that the cooling capacity supplied to the freezing room 1 needs to be reduced at this time, so the rotation speed of the compressor 4 is reduced, and the rotation speeds of the freezing room fan 81 and the condenser fan 51 can be adjusted to be lower accordingly. Similarly, when the compressor 4 is also turned on when the ice compartment 3 cools, the condenser fan 51 of the ice compartment fan 61 is also turned on, and the rotational speed of the compressor 4 is changed in accordance with the change in the storage temperature of the ice compartment 3, and at the same time, the rotational speed of the condenser fan 51 of the ice compartment fan 61 is also changed in accordance with the change in the rotational speed of the compressor 4.
Therefore, the rotating speed of the fan is adjusted according to the change of the cold quantity requirement of the compartment in the refrigerating process, so that the overall performance of the refrigerator refrigerating system can achieve the optimal matching effect.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (15)

1. A method of controlling a refrigeration appliance, comprising: the compressor and the fan are operated to cool a storage space, and the rotation speed of the fan is adjusted in association with the temperature of the storage space.
2. A method of controlling a refrigeration appliance, comprising: the compressor and the fan are operated to cool a storage space, and the rotational speed of the fan is adjusted in association with the rotational speed of the compressor.
3. The control method for a refrigeration appliance according to claim 1 or 2, characterized in that the method further comprises: the rotational speed of the compressor is adjusted in association with the temperature of the storage space.
4. The control method of a refrigerating appliance according to claim 1 or 2, wherein the fan includes a fan for delivering cool air generated by an evaporator to the storage space and/or a fan for cooling a condenser.
5. The control method of a refrigerator appliance according to claim 1, wherein the rotation speed of the fan is positively correlated with the temperature of the storage space.
6. The control method of a refrigerator appliance according to claim 1, wherein said adjusting the rotation speed of the fan in association with the temperature of the storage space comprises: the rotational speed of the fan is adjusted based on a difference between the temperature of the storage space and a reference temperature.
7. The control method for a refrigeration appliance according to claim 6, wherein the rotation speed adjustment amount of the fan is positively correlated with the difference.
8. The control method of a refrigeration appliance according to claim 2, wherein said adjusting the rotation speed of said fan in association with the rotation speed of said compressor comprises: and calculating and obtaining the rotating speed of the fan based on the rotating speed of the compressor.
9. The control method of a refrigeration appliance according to claim 2, wherein said adjusting the rotation speed of said fan in association with the rotation speed of said compressor comprises: the rotational speed of the fan is obtained based on a one-to-one correspondence of different rotational speeds of the compressor and different rotational speeds of the fan.
10. The control method of a refrigerating appliance according to claim 9, wherein the rotation speeds of the compressors include an nth compressor rotation speed and an N +1 th compressor rotation speed which are successively set from small to large; based on the corresponding relation, the rotating speeds of the fans comprise an Nth fan rotating speed and an N +1 th fan rotating speed which are continuously arranged from small to large.
11. The control method of a refrigerating appliance according to claim 10, wherein when the rotation speed of the compressor is between the nth compressor rotation speed and the N +1 th compressor rotation speed, the corresponding rotation speed of the fan is calculated based on the nth fan rotation speed and the N +1 th fan rotation speed.
12. The control method of a refrigeration appliance according to claim 1 or 2, further comprising: determining a maximum speed and a minimum speed of the fan in relation to an ambient temperature; and
when the adjusted rotating speed of the fan is greater than the maximum rotating speed, the fan runs at the maximum rotating speed; when the adjusted rotation speed of the compressor is less than the minimum rotation speed, the fan is operated at the minimum rotation speed.
13. The control method for a refrigeration appliance according to claim 1, further comprising: when the temperature of the storage space increases, the rotation speed of the fan increases; when the temperature of the storage space is lowered, the rotation speed of the fan is also lowered; when the temperature of the storage space tends to be stable, the rotation speed of the fan also tends to be stable.
14. The control method for a refrigeration appliance according to claim 2, further comprising: when the rotation speed of the compressor is increased, the rotation speed of the fan is increased; when the rotating speed of the compressor is reduced, the rotating speed of the fan is also reduced; when the rotation speed of the compressor tends to be stable, the rotation speed of the fan also tends to be stable.
15. A refrigeration appliance comprising a control unit, wherein the control unit controls the operation of the refrigeration appliance according to the control method of any preceding claim.
CN201910274826.XA 2019-04-08 2019-04-08 Refrigeration appliance and control method thereof Pending CN111795535A (en)

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