CN113701374A - Refrigeration equipment, refrigeration system and control method thereof - Google Patents

Refrigeration equipment, refrigeration system and control method thereof Download PDF

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Publication number
CN113701374A
CN113701374A CN202010438160.XA CN202010438160A CN113701374A CN 113701374 A CN113701374 A CN 113701374A CN 202010438160 A CN202010438160 A CN 202010438160A CN 113701374 A CN113701374 A CN 113701374A
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China
Prior art keywords
temperature
condenser
branch
preset
current
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CN202010438160.XA
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Chinese (zh)
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CN113701374B (en
Inventor
唐云
盛庆赫
唐学强
瞿赛
厉涛
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Hefei Hualing Co Ltd
Midea Group Co Ltd
Hefei Midea Refrigerator Co Ltd
Original Assignee
Hefei Hualing Co Ltd
Midea Group Co Ltd
Hefei Midea Refrigerator Co Ltd
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Priority to CN202010438160.XA priority Critical patent/CN113701374B/en
Publication of CN113701374A publication Critical patent/CN113701374A/en
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Publication of CN113701374B publication Critical patent/CN113701374B/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • 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
    • 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
    • F25B6/00—Compression machines, plants or systems, with several condenser circuits
    • F25B6/04—Compression machines, plants or systems, with several condenser circuits 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
    • F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D29/00—Arrangement or mounting of control or safety devices
    • F25D29/003—Arrangement or mounting of control or safety devices for movable devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2600/00—Control issues
    • F25D2600/04—Controlling heat transfer
    • 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
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Abstract

The invention provides a refrigeration device, a refrigeration system and a control method thereof, wherein at least two condensation branches arranged in parallel are connected between a compressor and a first condenser of the refrigeration system, at least two evaporation branches arranged in parallel are connected between the first condenser and a first evaporator, a first control switch is used for controlling any one condensation branch to be communicated with the compressor and the first condenser, and a second control switch is used for controlling any one evaporation branch to be communicated with the first condenser and the first evaporator. Among the above-mentioned technical scheme, cooperate with two at least evaporation branch road through two at least condensation branch road of first control switch and second control switch control, realize that refrigerating system provides different refrigerating output in the position of difference, concentrate through first evaporimeter even and refrigerate and realize quick-freeze or quick-freeze function, whole process need not change the compressor rotational speed or sacrifice the cold volume of other modules and come the rapid cooling of fully provided some part, prevents to cause the influence to cold-stored function.

Description

Refrigeration equipment, refrigeration system and control method thereof
Technical Field
The invention relates to the field of refrigeration, in particular to refrigeration equipment, a refrigeration system and a control method of the refrigeration equipment and the refrigeration system.
Background
With the improvement of life quality, functional requirements of people on refrigeration equipment, such as a refrigerator, are gradually improved, in the prior art, the refrigerator is provided with a quick-freezing or quick-freezing function, when the functions are realized, the frequency of a compressor is generally improved by a variable frequency refrigerator, the rotating speed of the compressor is increased to obtain relatively large refrigerating capacity, and the temperature of an evaporator is reduced so as to realize the quick cooling function; if the refrigerator with the fixed frequency needs to realize rapid cooling, the cold quantity of other modules is usually sacrificed to fully meet the rapid cooling of a certain part, for example, in a quick-freezing mode, the cold quantity is concentrated in a freezing area, and an air door is closed or directly switched to a freezing state, which is very unfavorable for controlling the refrigerating temperature.
Disclosure of Invention
The invention mainly aims to provide refrigeration equipment, a refrigeration system and a control method thereof, and aims to solve the problem that the control of refrigeration temperature is influenced by a quick-freezing operation mode in the prior art.
In order to achieve the above object, the present invention provides a refrigeration system, including a compressor, a first condenser and a first evaporator connected in series to form a refrigeration loop, where at least two condensation branches arranged in series-parallel are connected between the compressor and the first condenser, at least two evaporation branches arranged in series-parallel are connected between the first condenser and the first evaporator, the refrigeration loop is further provided with a first control switch and a second control switch, the first control switch is used to control any one condensation branch to communicate the compressor and the first condenser, and the second control switch is used to control any one evaporation branch to communicate the first condenser and the first evaporator.
In an embodiment, the number of the condensation branches is two, and the condensation branches are a first condensation branch and a second condensation branch respectively; the first condensation branch comprises a first condensation pipeline for communicating the compressor and the first condenser and a second condenser arranged on the first condensation pipeline, and the second condensation branch comprises a second condensation pipeline for communicating the compressor and the first condenser;
in an embodiment, the number of the evaporation branches is two, and the two evaporation branches are respectively a first evaporation branch and a second evaporation branch; the first evaporation branch comprises a first evaporation pipeline for communicating the first condenser and the first evaporator, and a first capillary tube and a second evaporator which are arranged on the first evaporation pipeline, and the second evaporation branch comprises a second evaporation pipeline for communicating the first condenser and the first evaporator, and a second capillary tube which is arranged on the second evaporation pipeline;
to achieve the above object, the present invention also provides a control method of a refrigeration system, the method comprising the steps of:
acquiring the current refrigerating temperature, the current freezing temperature and the currently set operation mode in real time;
acquiring the current refrigerating temperature, the current freezing temperature and the currently set operation mode in real time;
if the operation mode is a quick-freezing mode, controlling the first control switch to be adjusted to a first condensation branch to communicate the compressor and the first condenser, and controlling the second control switch to be adjusted to a first evaporation branch or a second evaporation branch to communicate the first condenser and the first evaporator according to the current refrigeration temperature;
if the operation mode is a non-quick-freezing mode, controlling the first control switch to adjust the first condensation branch or the second condensation branch to communicate the compressor with the first condenser and controlling the second control switch to adjust the first evaporation branch or the second evaporation branch to communicate the first condenser with the first evaporator according to the current refrigerating temperature and the current freezing temperature.
In an embodiment, if the operation mode is the quick-freezing mode, the step of controlling the first control switch to adjust the first condensing branch to communicate the compressor with the first condenser, and controlling the second control switch to adjust the first evaporating branch or the second evaporating branch to communicate the first condenser with the first evaporator according to the current refrigerating temperature includes:
if the operation mode is a quick-freezing mode, controlling the first control switch to adjust the first condensation branch to communicate the compressor and the first condenser;
judging whether the current refrigerating temperature is greater than a first preset refrigerating temperature or not;
if the current refrigerating temperature is higher than the first preset refrigerating temperature, controlling the second control switch to adjust the first evaporation branch to communicate the first condenser and the first evaporator;
and if the current refrigerating temperature is not greater than the first preset refrigerating temperature, controlling the second control switch to adjust the second evaporation branch to communicate the first condenser and the first evaporator.
In an embodiment, if the operation mode is the non-quick-freezing mode, the step of controlling the first control switch to adjust the first condensation branch or the second condensation branch to communicate the compressor with the first condenser and controlling the second control switch to adjust the first evaporation branch or the second evaporation branch to communicate the first condenser with the first evaporator according to the current refrigerating temperature and the current freezing temperature includes:
if the operation mode is a non-quick-freezing mode, judging whether the current refrigerating temperature is greater than a first preset refrigerating temperature or not and whether the current freezing temperature is greater than a first preset freezing temperature or not;
if the current refrigerating temperature is not more than the first preset refrigerating temperature and the current freezing temperature is more than the first preset freezing temperature, controlling the first control switch to adjust the second condensation branch to communicate the compressor and the first condenser, and controlling the second control switch to adjust the second evaporation branch to communicate the first condenser and the first evaporator;
and if the current refrigerating temperature is not greater than the first preset refrigerating temperature and the current freezing temperature is not greater than the first preset freezing temperature, controlling the compressor to stop.
In an embodiment, if the current refrigerating temperature is not greater than the first preset refrigerating temperature and the current freezing temperature is greater than the first preset freezing temperature, the step of controlling the first control switch to adjust the second condensing branch to communicate the compressor with the first condenser and controlling the second control switch to adjust the second evaporating branch to communicate the first condenser with the first evaporator further includes:
judging whether the current refrigerating temperature is greater than a second preset refrigerating temperature or not;
if the current refrigerating temperature is higher than the second preset refrigerating temperature, controlling the first control switch to adjust the first condensation branch to be communicated with the compressor and the first condenser, controlling the second control switch to adjust the first evaporation branch to be communicated with the first condenser and the first evaporator, and returning to execute the step of judging whether the current refrigerating temperature is higher than the first preset refrigerating temperature and whether the current freezing temperature is higher than the first preset freezing temperature or not if the operation mode is a non-quick-freezing mode;
wherein the second preset refrigeration temperature is greater than the first preset refrigeration temperature.
In an embodiment, if the current refrigerating temperature is not greater than the first preset refrigerating temperature and the current freezing temperature is not greater than the first preset freezing temperature, the step of controlling the compressor to stop further includes:
judging whether the current refrigerating temperature is greater than a second preset refrigerating temperature or not and whether the current freezing temperature is greater than a second preset freezing temperature or not;
if the current refrigerating temperature is greater than the second preset refrigerating temperature and/or the current freezing temperature is greater than the second preset freezing temperature, controlling the compressor to start, and returning to execute the step of judging whether the current refrigerating temperature is greater than the first preset refrigerating temperature and whether the current freezing temperature is greater than the first preset freezing temperature if the operation mode is a non-quick-freezing mode;
wherein the second preset refrigeration temperature is greater than the first preset refrigeration temperature.
In an embodiment, the step of determining whether the current refrigerating temperature is greater than the first preset refrigerating temperature and whether the current freezing temperature is greater than the first preset freezing temperature if the operation mode is the non-quick-freezing mode further includes:
if the current refrigerating temperature is greater than the first preset refrigerating temperature and the current freezing temperature is greater than the first preset freezing temperature, controlling the first control switch to adjust the first condensation branch to communicate the compressor and the first condenser, and controlling the second control switch to adjust the first evaporation branch to communicate the first condenser and the first evaporator;
if the current refrigerating temperature is greater than the first preset refrigerating temperature and the current freezing temperature is not greater than the first preset freezing temperature, the first control switch is controlled to be adjusted to the second condensation branch communicated with the compressor and the first condenser, and the second control switch is controlled to be adjusted to the first evaporation branch communicated with the first condenser and the first evaporator.
In an embodiment, if the current refrigerating temperature is greater than the first preset refrigerating temperature and the current freezing temperature is not greater than the first preset freezing temperature, the step of controlling the first control switch to adjust the second condensation branch to communicate the compressor with the first condenser and controlling the second control switch to adjust the first evaporation branch to communicate the first condenser with the first evaporator further includes:
judging whether the current freezing temperature is greater than a second preset freezing temperature or not;
if the current freezing temperature is higher than the second preset freezing temperature, controlling the first control switch to adjust the first condensation branch to be communicated with the compressor and the first condenser, and controlling the second control switch to adjust the first evaporation branch to be communicated with the first condenser and the first evaporator; and returning to execute the step of judging whether the current refrigerating temperature is greater than the first preset refrigerating temperature or not and whether the current freezing temperature is greater than the first preset freezing temperature or not if the operation mode is a non-quick-freezing mode;
wherein the second preset freezing temperature is greater than the first preset freezing temperature.
To achieve the above object, the present invention further provides a refrigeration apparatus comprising a control unit and a refrigeration system as described above, the control unit comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the computer program, when executed by the processor, implementing the steps of the control method of the refrigeration system as described above.
In the technical scheme of the invention, the refrigerant is compressed into high-temperature and high-pressure gas in the compressor, enters the first condenser to release heat and condense into high-pressure liquid, is decompressed and enters the evaporator, absorbs heat in the first evaporator to evaporate, achieves the refrigeration effect, finally returns to the compressor, and circulates in the way. At least two condensation branches arranged in series-parallel connection are connected between the compressor and the first condenser, different condensation branches can enable refrigeration to reach different condensation temperatures, and any one condensation branch is controlled through the first control switch to be communicated with the compressor and the first condenser, so that the whole refrigeration system can achieve different refrigeration effects. The evaporation branch circuits that are connected with two at least series-parallel arrangements between first condenser and the first evaporimeter, different evaporation branch circuits can carry out evaporation refrigeration in the position of difference to the refrigerant flows through the evaporation branch circuit earlier, flows through first evaporimeter again, then arbitrary evaporation branch circuit intercommunication first condenser of second control switch control and first evaporimeter, can change the refrigeration position among the refrigerating system and the refrigerating output that first evaporimeter realized. The refrigeration system is controlled to be matched with the at least two evaporation branch circuits through the first control switch and the second control switch, the refrigeration system provides different refrigeration amounts at different positions, even the quick-freezing or quick-freezing function is realized through the concentrated refrigeration of the first evaporator, the rapid cooling of a certain part is fully met without changing the rotating speed of the compressor or sacrificing the refrigeration amount of other modules in the whole process, and the influence on the refrigeration function is prevented.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic piping diagram of a refrigeration system according to an embodiment of the present invention;
FIG. 2 is a schematic piping diagram of a refrigeration system according to another embodiment of the present invention;
FIG. 3 is a schematic flow chart of a first embodiment of a method of controlling a refrigerant system of the present invention;
FIG. 4 is a schematic flow chart of a second embodiment of a method of controlling a refrigerant system of the present invention;
FIG. 5 is a schematic flow chart of a third embodiment of a method of controlling a refrigerant system of the present invention;
FIG. 6 is a schematic flow chart illustrating a third embodiment of a method for controlling a refrigerant system in accordance with the present invention;
FIG. 7 shows a first method of controlling the refrigeration system of the present inventionFourthlyA schematic flow diagram of an embodiment;
FIG. 8 is a schematic flow chart diagram of a fifth embodiment of a method of controlling a refrigerant system of the present invention;
FIG. 9 is a schematic flow chart diagram of a sixth embodiment of a method of controlling a refrigerant system of the present invention;
fig. 10 is a schematic block diagram of a control unit according to the present invention.
The reference numbers illustrate:
reference numerals Name (R) Reference numerals Name (R)
100 Refrigeration system 6 Evaporation branch
1 Compressor 61 First evaporation branch
2 First evaporator 611 First evaporation pipeline
31 First control switch 612 First capillary
32 Second control switch 613 Second evaporator
4 Condensation branch 62 Second evaporation branch
41 First condensation branch 621 Second evaporation pipeline
411 First condensation pipeline 622 Second capillary
412 Second condenser 71 Drying filter tube
42 Second condensation branch 72 Air return pipe
5 First condenser 73 Dew-proof pipe
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments will be described clearly and completely with reference to the drawings in the embodiments, 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.
It should be noted that all the directional indications (such as up, down, left, right, front, and rear … …) in the present embodiment are only used to explain the relative positional relationship between the components, the movement, and the like in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indication is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In addition, the technical solutions in the embodiments of the present invention may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination of technical solutions should not be considered to exist, and is not within the protection scope of the present invention. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The invention provides a refrigeration system 100, please refer to fig. 1 and fig. 2, the refrigeration system 100 includes a compressor 1, a first condenser 5 and a first evaporator 2 which are connected in series to form a refrigeration loop, at least two condensation branches 4 which are arranged in series are connected between the compressor 1 and the first condenser 5, at least two evaporation branches 6 which are arranged in series are connected between the first condenser 5 and the first evaporator 2, a first control switch 31 and a second control switch 32 are further arranged on the refrigeration loop, the first control switch 31 is used for controlling any one condensation branch 4 to communicate the compressor 1 and the first condenser 5, and the second control switch 32 is used for controlling any one evaporation branch 6 to communicate the first condenser 5 and the first evaporator 2.
In the technical scheme of the embodiment, the refrigerant is compressed into high-temperature and high-pressure gas in the compressor 1, enters the first condenser 5 to release heat and condense into high-pressure liquid, is decompressed and enters the evaporator, absorbs heat in the first evaporator 2 to evaporate, so that the refrigerating effect is achieved, and finally returns to the compressor 1, and the cycle is repeated. At least two condensation branch circuits 4 arranged in series-parallel connection are connected between the compressor 1 and the first condenser 5, different condensation branch circuits 4 can enable refrigeration to reach different condensation temperatures, and any one condensation branch circuit 4 is controlled through the first control switch 31 to be communicated with the compressor 1 and the first condenser 5, so that the whole refrigeration system 100 can achieve different refrigeration effects. At least two evaporation branch circuits 6 arranged in series-parallel are connected between the first condenser 5 and the first evaporator 2, different evaporation branch circuits 6 can perform evaporation refrigeration at different positions, and the refrigerant flows through the evaporation branch circuits 6 first and then flows through the first evaporator 2, so that the second control switch 32 controls any one evaporation branch circuit 6 to communicate the first condenser 5 and the first evaporator 2, and the refrigeration position in the refrigeration system 100 and the refrigeration capacity realized by the first evaporator 2 can be changed. At least two condensation branch roads 4 and at least two evaporation branch roads 6 are controlled to cooperate through first control switch 31 and second control switch 32, realize that refrigerating system 100 provides different refrigerating capacities in different positions, concentrate through first evaporimeter 2 even and refrigerate and realize quick-freeze or quick-freeze function to whole process need not change compressor 1 rotational speed or sacrifice the cold volume of other modules and fully satisfy some partial rapid cooling, prevents to cause the influence to cold-stored function.
The first control switch 31 is provided with an inlet and a plurality of outlets, the inlet of the first control switch 31 is communicated with the outlet of the compressor 1, the inlet of each condensing branch 4 is communicated with the outlet of the first control switch 31 in a one-to-one correspondence manner, the outlet of each condensing branch 4 is communicated with the first condenser 5, the inlet of the first control switch 31 is communicated with any one of the outlets, and the purpose that any one condensing branch 4 is communicated with the compressor 1 and the first condenser 5 is achieved. Similarly, the second control switch 32 is provided with an inlet and a plurality of outlets, the inlet of the second control switch 32 is communicated with the outlet of the first condenser 5, the inlets of the evaporation branches 6 are communicated with the outlets of the second control switch 32 in a one-to-one correspondence manner, the outlets of the evaporation branches 6 are communicated with the first evaporator 2, and the inlet of the second control switch 32 is communicated with any one of the outlets, so that any one of the evaporation branches 6 is communicated with the first condenser 5 and the first evaporator 2.
As shown in fig. 1, the number of the condensing branches 4 is two, namely, a first condensing branch 41 and a second condensing branch 42; the first condensation branch 41 comprises a first condensation pipeline 411 for communicating the compressor 1 and the first condenser 5, and a second condenser 412 arranged on the first condensation pipeline 411, and the second condensation branch 42 is a second condensation pipeline for communicating the compressor 1 and the first condenser 5; the first control switch 31 controls the first condensation branch 41 to communicate the first condenser 5 and the first evaporator 2, so that the refrigerant flows through the second condenser 412 first and then flows through the first condenser 5; the first control switch 31 controls the second condensation branch 42 to connect the first condenser 5 and the first evaporator 2, and the refrigerant directly flows through the first condenser 5. The refrigerant can obtain more cooling capacity through the second condensation branch 42 than through the first condensation branch 41, so that the refrigerant can have better cooling effect through the first evaporator 2.
The number of the evaporation branches 6 is two, namely a first evaporation branch 61 and a second evaporation branch 62; the first evaporation branch 61 comprises a first evaporation pipeline 611 for communicating the first condenser 5 and the first evaporator 2, and a first capillary tube 612 and a second evaporator 613 which are arranged on the first evaporation pipeline 611, and the second evaporation branch 62 comprises a second evaporation pipeline 621 for communicating the first condenser 5 and the first evaporator 2, and a second capillary tube 622 which is arranged on the second evaporation pipeline 621; taking a refrigerator as an example, the first evaporator 2 is a freezing evaporator which cools a freezing chamber of the refrigerator, and the second evaporator 613 is a refrigerating evaporator which cools a refrigerating chamber of the refrigerator. The second control switch 32 controls the first evaporation branch 61 to communicate the first condenser 5 and the first evaporator 2, so that the refrigerant flows through the first capillary tube 612 and the second evaporator 613 first, and then flows through the first evaporator 2, and the refrigeration system 100 can refrigerate a refrigerating chamber and a freezing chamber at the same time; the second control switch 32 controls the second evaporation branch 62 to communicate the first condenser 5 and the first evaporator 2, so that the refrigerant flows through the second capillary 622, then flows through the first evaporator 2 in diameter, and is refrigerated, and is concentrated into a freezing chamber.
In the actual use process, when the first condensation branch 41 is communicated with the compressor 1 and the first condenser 5, and the first evaporation branch 61 is communicated with the first condenser 5 and the first evaporator 2, the conditions of high refrigeration quantity and high refrigeration quantity required by refrigeration are met; when the first condensation branch 41 is communicated with the compressor 1 and the first condenser 5, and the second evaporation branch 62 is communicated with the first condenser 5 and the first evaporator 2, the requirement of quick cooling or quick freezing is met; the second condensation branch 42 is communicated with the compressor 1 and the first condenser 5, and when the first evaporation branch 61 is communicated with the first condenser 5 and the first evaporator 2, the conditions of large refrigerating capacity and small refrigerating capacity required by refrigeration are met; the second condensation branch 42 is connected to the compressor 1 and the first condenser 5, and when the first evaporation branch 61 is connected to the first condenser 5 and the second evaporator 613, the refrigerating temperature is too low, and the refrigerating capacity required by freezing is large.
Specifically, the first control switch 31 and the second control switch 32 may be solenoid valves, for example, the first control switch 31 is used, an inlet of the solenoid valve is communicated with the compressor 1, one outlet of the solenoid valve is communicated with the first condensation branch 41, the other outlet of the solenoid valve is communicated with the second branch, and the opening mode of the outlet controlled by the solenoid valve can control any one condensation branch 4 to communicate the compressor 1 and the first condenser 5. The first control switch 31 and the second control switch 32 may also be dampers disposed on each condensing branch 4, and the communication between the compressor 1 and the first condenser 5 through any one condensing branch 4 is realized by opening and closing each damper.
A drying and filtering pipe is arranged between the first condenser 5 and the at least two evaporation branches 6 which are arranged in series-parallel, and the drying and filtering pipe can effectively filter impurities and moisture in the refrigerant so as to ensure that the capillary pipe is unblocked and the refrigeration system 100 works normally. When the desiccant fails due to excessive water absorption, it should be replaced in time. A gas return pipe 72 is arranged between the at least two evaporation branch pipes 6 arranged in series-parallel and the gas inlet of the compressor 1, and the first capillary tube 612 and/or the second capillary tube 622 are wound on the gas return pipe 72, so that the temperature of the refrigerant passing through the first capillary tube 612 and/or the second capillary tube 622 can be reduced, the liquid refrigerant can be ensured to be completely evaporated in the first evaporator 2 or the second evaporator 613, the low-temperature and low-pressure refrigerant passing through the gas return pipe 72 can be preheated before entering the compressor 1, and the efficiency of the compressor 1 is improved.
Refrigeration system 100 is applied to refrigeration plant, refrigeration plant can be refrigerator, refrigerator or freezer etc., this embodiment explains with refrigeration plant is the refrigerator as an example, can be at the chamber door edge design dew prevention pipe 73 of refrigerator to with the export intercommunication of compressor 1, in the refrigerator refrigeration process, high temperature high pressure refrigerant flows through dew prevention pipe 73 earlier, make dew prevention pipe 73 generate heat, prevent chamber door department condensation droplet, play the dew prevention effect, prevent that the dew from appearing around the chamber door of refrigerator and leading to refrigerator corrosion, mildening and rot or drip and form the potential safety hazard on ground.
In addition, as shown in fig. 2, when the refrigerator has a temperature-changing compartment, a thawing compartment, or a quick-freezing compartment, the number of the evaporation branches 6 connected in series may be multiple, wherein only a capillary tube is disposed on one evaporation branch 6, evaporators are disposed on the other evaporation branches 6, and the number of the evaporation branches 6 is the same as the number of the compartments and is used for refrigerating the corresponding compartments.
When the refrigeration system 100 is applied to an air-cooled refrigerator, the refrigeration system further includes a refrigeration fan disposed near the first evaporator, the first evaporator 2 is a freezing evaporator, a freezing fan is disposed near the freezing evaporator, the refrigeration fan is used for blowing cold air to the cold storage chamber, and the freezing fan is used for blowing cold air to the cold storage chamber.
The present invention also provides a control method of a refrigeration system, referring to fig. 3, fig. 3 is a schematic flow chart of a first embodiment of the control method of the refrigeration apparatus of the present invention, and the method includes:
step S100, acquiring the current refrigerating temperature tr, the current freezing temperature tf and the current set operation mode in real time;
the current refrigerating temperature tr and the current freezing temperature tf may be directly set in the corresponding compartment by a temperature sensor, or directly set in the first evaporator 2 and the second evaporator 613 by a temperature sensor, or directly detected by other detected data, and the present application does not limit the manner of obtaining the current refrigerating temperature tr and the current freezing temperature tf. The operation mode can be a quick-freezing mode or a non-quick-freezing mode, in the quick-freezing mode, freezing and refrigeration are intensively carried out under the condition of keeping normal refrigeration operation, the freezing and refrigeration amount is increased to the maximum extent, and the operation mode is switched by a user.
Step S200, if the operation mode is a quick-freezing mode, controlling a first control switch to adjust a first condensation branch to communicate a compressor and a first condenser, and controlling a second control switch to adjust a first evaporation branch or a second evaporation branch to communicate the first condenser and a first evaporator according to the current refrigeration temperature tr;
when the detected currently set operation mode is the quick-freezing mode, the refrigerant flows through the second condenser 412 first and then flows through the first condenser 5, so that the condensation temperature of the refrigerant is further reduced, whether the refrigeration system 100 has a refrigeration requirement is judged according to the refrigeration temperature, and the first evaporation branch 61 or the second evaporation branch 62 is selected to communicate the first condenser 5 with the first evaporator 2 according to whether refrigeration is currently required. On the premise of ensuring the refrigeration function, the freezing refrigeration is continuously carried out, so that the normal operation of the refrigeration function is maintained while the quick-freezing function is realized.
And step S300, if the operation mode is a non-quick-freezing mode, controlling the first control switch to adjust the first condensation branch or the second condensation branch to communicate the compressor and the first condenser and controlling the second control switch to adjust the first evaporation branch or the second evaporation branch to communicate the first condenser and the first evaporator according to the current refrigerating temperature tr and the current freezing temperature tf.
When the detected currently set operation mode is a non-quick-freezing mode, whether the refrigerating system 100 has a refrigerating requirement or not is judged through refrigerating temperature, whether the refrigerating system 100 has a freezing requirement or not is judged through freezing temperature, and according to whether refrigerating and freezing refrigeration are required or not currently, one of the first condensation branch 41 and the second condensation branch 42 is selected to be matched with one of the first evaporation branch 61 and the second evaporation branch 62, and normal operation of refrigerating and freezing refrigeration is met. Wherein the non-quick-freezing mode is a normal refrigeration mode.
This embodiment is through obtaining the operational mode to carry out the cooperation of different condensation branch road 4 and freezing branch road according to the operational mode of difference, keep cold-stored refrigeration demand to satisfy simultaneously with freezing refrigeration demand all the time, cold-stored temperature is more accurate with freezing temperature's control, and refrigerating system 100's refrigeration efficiency is higher.
Further, in a second embodiment of the method for controlling a refrigeration apparatus according to the present invention based on the first embodiment of the present invention, please refer to fig. 4, wherein step S200 includes:
step S210, if the operation mode is the quick-freezing mode, controlling a first control switch to adjust a first condensation branch to communicate a compressor and a first condenser;
step S220, judging whether the current refrigerating temperature tr is greater than a first preset refrigerating temperature trs;
step S230, if the current refrigerating temperature tr is greater than a first preset refrigerating temperature trs, controlling a second control switch to adjust a first evaporation branch to communicate a first condenser and a first evaporator;
and S240, if the current refrigerating temperature tr is not greater than the first preset refrigerating temperature trs, controlling a second control switch to adjust the second evaporation branch to communicate the first condenser and the first evaporator.
In this embodiment, the first preset refrigeration temperature trs is a refrigeration shutdown temperature, and when the current refrigeration temperature tr is less than or equal to the first preset refrigeration temperature trs, it indicates that the refrigeration system 100 does not have a refrigeration requirement, so that when the current refrigeration temperature tr is greater than the first preset refrigeration temperature, the refrigerant flows through the first evaporation branch 61 to perform refrigeration, then enters the first evaporator 2 to perform refrigeration, and preferentially performs refrigeration; in the process, the first evaporation branch 61 does not work, so that the refrigerating temperature can be gradually increased, and when the refrigerating temperature is higher than the first preset temperature, the refrigerant is switched to flow through the first refrigerating branch again to perform refrigerating refrigeration and then enters the first evaporator 2 to perform freezing refrigeration, so that the refrigerating cycle in the quick-freezing mode is realized.
In this embodiment, in order to prevent frequently carrying out the switching of first control switch 31, can set up the preset refrigeration temperature trk of second, and the preset refrigeration temperature trk of second is cold-stored start temperature, and cold-stored temperature can rise gradually, and when cold-stored temperature was greater than the preset temperature of second here, the refrigerant switched again to the first refrigeration branch road of flowing through and carries out cold-stored refrigeration, reentrant first evaporimeter 2 carries out freezing refrigeration, realizes refrigeration cycle.
Further, in a third embodiment of the control method of the refrigeration system according to the present invention proposed based on the first embodiment of the present invention, please refer to fig. 5 in combination, the step S300 includes:
step S310, if the operation mode is a non-quick-freezing mode, judging whether the current refrigerating temperature tr is greater than a first preset refrigerating temperature trs and whether the current freezing temperature tf is greater than a first preset freezing temperature tfs;
step S320, if the current refrigerating temperature tr is not more than a first preset refrigerating temperature trs and the current freezing temperature tf is more than a first preset freezing temperature tfs, controlling a first control switch to adjust a second condensation branch to communicate a compressor and a first condenser, and controlling a second control switch to adjust a second evaporation branch to communicate the first condenser and a first evaporator;
in step S330, if the current refrigerating temperature tr is not greater than the first preset refrigerating temperature trs and the current freezing temperature tf is not greater than the first preset freezing temperature tfs, the compressor is controlled to stop.
In this embodiment, the first preset refrigeration temperature trs is a refrigeration shutdown temperature, and when the current refrigeration temperature tr is less than or equal to the first preset refrigeration temperature trs, it indicates that the refrigeration system 100 does not have a refrigeration requirement; the first preset freezing temperature tfs is a freezing shutdown temperature, and when the current freezing temperature tf is less than or equal to the first preset freezing temperature tfs, it indicates that the refrigeration system 100 does not have a freezing refrigeration demand. If the current refrigerating temperature tr is not greater than the first preset refrigerating temperature trs and the current freezing temperature tf is greater than the first preset freezing temperature tfs, which indicates that the refrigerating system 100 does not have a refrigerating requirement and has a freezing requirement, the refrigerant flows through the second condensing branch 42, the first condenser 5 and the second evaporating branch 62 and then enters the first evaporator 2 for refrigeration; the refrigerating capacity of the refrigerant is small, and only refrigeration is carried out, so that the phenomenon that the refrigerating and cooling speed is too high and the compressor 1 is frequently started and stopped is prevented; the refrigerating temperature is increased, and the freezing temperature is reduced or maintained, so that the refrigerating temperature and the freezing temperature are both in a normal temperature range. If the current refrigerating temperature tr is not greater than the first preset refrigerating temperature trs and the current freezing temperature tf is not greater than the first preset freezing temperature tfs, the compressor 1 is stopped, and the whole refrigerating system 100 does not operate, so that the refrigerating temperature and/or the freezing temperature are prevented from being too low, and the refrigerating temperature and the freezing temperature are continuously increased, so that the refrigerating temperature and the freezing temperature are both in the normal temperature range.
In the third embodiment, please refer to fig. 6 in combination, after step S310, the method further includes:
step S340, if the current refrigerating temperature tr is greater than a first preset refrigerating temperature trs and the current freezing temperature tf is greater than a first preset freezing temperature tfs, controlling a first control switch to adjust a first condensation branch to communicate a compressor and a first condenser, and controlling a second control switch to adjust a first evaporation branch to communicate the first condenser and a first evaporator;
and step S350, if the current refrigerating temperature tr is greater than the first preset refrigerating temperature trs and the current freezing temperature tf is not greater than the first preset freezing temperature tfs, controlling the first control switch to adjust the second condensing branch to communicate the compressor and the first condenser, and controlling the second control switch to adjust the first evaporating branch to communicate the first condenser and the first evaporator.
If the current refrigerating temperature tr is greater than the first preset refrigerating temperature trs, and the current freezing temperature tf is greater than the first preset freezing temperature tfs, it indicates that the refrigerating system 100 has a refrigerating requirement and a freezing requirement, then the refrigerant flows through the first condensation branch 41, the first condenser 5, the refrigerant enters the first evaporator 2 after flowing through the first evaporation branch 61 to be refrigerated, the refrigerant condensing temperature is low, and the first evaporation branch 61 is refrigerated, the first evaporator 2 is refrigerated, so that the refrigerating temperature and the freezing temperature are simultaneously reduced, and the refrigerating temperature and the freezing temperature are both in a normal temperature interval. If the current refrigerating temperature tr is greater than the first preset refrigerating temperature trs, and the current freezing temperature tf is not greater than the first preset freezing temperature tfs, the refrigerant flows through the second condensation branch 42, the first condenser 5 and the first evaporation branch 61 and then enters the first evaporator 2 for refrigeration, the first evaporation branch 61 performs refrigerating refrigeration, the refrigerant enters the first evaporator 2 with small refrigerating capacity or even without refrigeration, and therefore the refrigerating temperature is reduced, the freezing temperature is increased, and the refrigerating temperature and the freezing temperature are both within a normal temperature range.
The refrigerant flows through the second condensation branch 42, the first condenser 5 and the second evaporation branch 62 and then enters the first evaporator 2 for refrigeration; the refrigerating capacity of the refrigerant is small, and only refrigeration is carried out, so that the phenomenon that the refrigerating and cooling speed is too high and the compressor 1 is frequently started and stopped is prevented. If the current refrigerating temperature tr is not greater than the first preset refrigerating temperature trs and the current freezing temperature tf is not greater than the first preset freezing temperature tfs, the compressor 1 is stopped, and the entire refrigerating system 100 is not operated, thereby preventing the refrigerating temperature and/or the freezing temperature from being excessively low.
In a fourth embodiment of the method for controlling a refrigeration system according to the present invention proposed based on the third embodiment of the present invention, referring to fig. 7, the step S320 further includes:
step S321, judging whether the current refrigerating temperature tr is greater than a second preset refrigerating temperature trk;
in step S322, if the current refrigerating temperature tr is greater than the second preset refrigerating temperature trk, the first control switch is controlled to adjust the first condensing branch to communicate the compressor and the first condenser, the second control switch is controlled to adjust the first evaporating branch to communicate the first condenser and the first evaporator, and the step S310 is executed again.
Wherein the second preset refrigeration temperature trk is greater than the first preset refrigeration temperature trs.
In the present embodiment, since the first control switch 31 is adjusted to the second condensation branch 42 to communicate the compressor 1 with the first condenser 5, and the second control switch 32 is adjusted to the second evaporation branch 62 to communicate the first condenser 5 with the first evaporator 2, the first evaporator 2 continuously performs freezing and refrigerating, and the first evaporation branch 61 does not perform refrigerating and refrigerating to continuously decrease the freezing temperature, and the refrigerating temperature continuously increases. When the current cold storage temperature is higher than the second preset storage temperature trk, the refrigerant flows through the first condensation branch 41, the first condenser 5 and the first evaporation branch 61 and then enters the first evaporator 2, and the first evaporator 2 performs freezing and refrigerating while the first evaporation branch 61 performs cold storage and refrigerating. And the step S310 is performed again to implement the refrigeration cycle.
Further, if the current refrigerating temperature tr is greater than the first preset refrigerating temperature trs and less than the second preset refrigerating temperature trk, the refrigerant keeps running in the original flow path; and if the current refrigerating temperature tr is greater than the first preset refrigerating temperature trs, controlling the compressor 1 to stop.
In a fifth embodiment of the method for controlling a refrigeration system according to the third embodiment of the present invention, referring to fig. 8, after step S350, the method further includes:
step S351, judging whether the current freezing temperature tf is greater than a second preset freezing temperature tfk;
step S352, if the current freezing temperature tf is greater than a second preset freezing temperature tfk, controlling the first control switch to adjust the first condensing branch to communicate the compressor and the first condenser, controlling the second control switch to adjust the first evaporating branch to communicate the first condenser and the first evaporator, and returning to the step S310;
wherein the second preset freezing temperature tfk is greater than the first preset freezing temperature tfs.
In the present embodiment, since the first control switch 31 is adjusted to the second condensation branch 42 to communicate the compressor 1 with the first condenser 5, and the second control switch 32 is adjusted to the first evaporation branch 61 to communicate the first condenser 5 with the first evaporator 2, the first evaporation branch 61 continuously performs the refrigeration cooling, and the first evaporator 2 performs the refrigeration cooling with a small amplitude or without cooling, so that the refrigeration temperature continuously decreases, and the freezing temperature continuously increases or maintains. When the current cold freezing temperature is higher than the second preset freezing temperature tfk, the refrigerant flows through the first condensation branch 41, the first condenser 5, and the first evaporation branch 61 and then enters the first evaporator 2, and while the first evaporation branch 61 performs cold storage and refrigeration, the first evaporator 2 performs cold storage and refrigeration, and step S323 is performed again to implement the refrigeration cycle.
Further, if the current freezing temperature tf is greater than the first preset freezing temperature tfs and less than the second preset freezing temperature tfk, the refrigerant keeps the flow path running; and if the current freezing temperature tf is greater than the first preset freezing temperature tfs, controlling the compressor 1 to stop.
In a sixth embodiment of the method for controlling a refrigeration system according to the present invention based on the third embodiment of the present invention, referring to fig. 9, the step S330 is followed by:
step S331, judging whether the current refrigerating temperature tr is greater than a second preset refrigerating temperature trk or not and whether the current freezing temperature tf is greater than a second preset freezing temperature tfk or not;
in step S332, if the current refrigerating temperature tr is greater than the second preset refrigerating temperature trk and/or the current freezing temperature tf is greater than the second preset freezing temperature tfk, the compressor is controlled to start, and the step S310 is executed again.
The embodiment is also applicable to the situation that the compressor 1 in the fourth embodiment and the fifth embodiment is stopped, and after the compressor 1 is stopped, the current refrigerating temperature tr is greater than the second preset refrigerating temperature trk, which indicates that the refrigerating temperature is too high and refrigeration is required; the current freezing temperature tf is greater than the second preset freezing temperature tfk, which indicates that the freezing temperature is too high, and freezing and refrigerating are required, therefore, when the current refrigerating temperature tr is greater than the second preset refrigerating temperature trk and/or the current freezing temperature tf is greater than the second preset freezing temperature tfk, the compressor 1 is started, and according to the current refrigerating temperature tr and the current freezing temperature tf, the first control switch 31 is controlled to adjust the first condensing branch 41 or the second condensing branch 42 to communicate the compressor 1 with the first condenser 5, and the second control switch 32 is controlled to adjust the first evaporating branch 61 or the second evaporating branch 62 to communicate the first condenser 5 with the first evaporator 2, thereby implementing the refrigerating cycle.
When the control method of the refrigeration system is applied to the air-cooled refrigerator, the freezing fan keeps running constantly, the second control switch adjusts the first evaporation branch to be communicated with the first condenser and the first compressor, the refrigeration fan is controlled to be started, and the second control switch adjusts the second evaporation branch to be communicated with the first condenser and the first compressor, the refrigeration fan is controlled to be stopped.
The refrigeration system control method in the sixth embodiment is applied to an air-cooled refrigerator, and if the first evaporation branch 61 is communicated with the first condenser 5 and the first evaporator, the refrigeration fan is started; if the second control switch 32 is adjusted to the second evaporation branch 62 to connect the first condenser 5 and the first evaporator 2, the refrigeration fan is turned off. The refrigerating fan is always kept in an operating state, the first evaporator 2 is low in load due to the fact that the refrigerating fan does not rotate, the evaporating temperature is greatly reduced, and the efficiency of the refrigerating system 100 is also sharply reduced.
To achieve the above object, the present invention further provides a refrigeration apparatus comprising a control unit and a refrigeration system 100 as described above, the control unit comprising a memory 10, a processor 20 and a computer program stored on said memory 10 and executable on said processor 20, the computer program, when executed by said processor 20, implementing the steps of the control method of the refrigeration system as described above. The refrigeration apparatus has all the advantages of the refrigeration system 100 and the control of the refrigeration system 100, which are not described herein again.
The memory 10 may be used to store software programs and various data. The memory 10 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application program required by at least one function (for example, determine whether the current refrigerating temperature tr is greater than the first preset refrigerating temperature trs and whether the current freezing temperature tf is greater than the first preset freezing temperature tfs), and the like; the storage data area may include a database, and the storage data area may store data or information created according to use of the system, or the like. Further, the memory 10 may include high speed random access memory 10, and may also include non-volatile memory 10, such as at least one piece of disk memory 10, flash memory device, or other piece of volatile solid state memory 10.
The processor 20, which is a control center of the refrigeration equipment, connects various parts of the entire refrigeration equipment by using various interfaces and lines, and performs various functions of the refrigeration equipment and processes data by running or executing software programs and/or modules stored in the memory 10 and calling data stored in the memory 10, thereby performing overall monitoring of the refrigeration equipment. Processor 20 may include one or more processing units; alternatively, the processor 20 may integrate the application processor 20 and the modem processor 20, wherein the application processor 20 mainly handles operating systems, user interfaces, application programs, and the like, and the modem processor 20 mainly handles wireless communications. It will be appreciated that the modem processor 20 described above may not be integrated into the processor 20.
Although not shown in fig. 10, the refrigeration apparatus may further include a circuit control module for connecting with a power supply to ensure the normal operation of other components. Those skilled in the art will appreciate that the refrigeration unit configuration shown in fig. 10 is not intended to be limiting and may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.
In the present invention, the terms "first" and "second" … … are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and those skilled in the art can understand the specific meaning of the above terms in the present invention according to specific situations.
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 the embodiment of the present invention has been shown and described, the scope of the present invention is not limited thereto, it should be understood that the above embodiment is illustrative and not to be construed as limiting the present invention, and that those skilled in the art can make changes, modifications and substitutions to the above embodiment within the scope of the present invention, and that these changes, modifications and substitutions should be covered by the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (11)

1. The utility model provides a refrigerating system, is including establishing ties into refrigerating circuit's compressor, first condenser and first evaporimeter, its characterized in that, the compressor with be connected with two at least condensation branch roads that thoughtlessly link the setting between the first condenser, first condenser with be connected with two at least evaporation branch roads that thoughtlessly link the setting between the first evaporimeter, still be equipped with first control switch and second control switch on the refrigerating circuit, first control switch is used for controlling arbitrary condensation branch road intercommunication the compressor with first condenser, second control switch is used for controlling arbitrary evaporation branch road intercommunication first condenser and first evaporimeter.
2. The refrigeration system according to claim 1, wherein the number of the condensing branches is two, namely a first condensing branch and a second condensing branch; the first condensation branch comprises a first condensation pipeline communicated with the compressor and the first condenser and a second condenser arranged on the first condensation pipeline, and the second condensation branch comprises a second condensation pipeline communicated with the compressor and the first condenser.
3. The refrigeration system according to claim 2, wherein the number of the evaporation branches is two, namely a first evaporation branch and a second evaporation branch; the first evaporation branch comprises a first condenser, a first evaporation pipeline of the first evaporator, a first capillary and a second evaporator, the first condenser is communicated with the first evaporation pipeline of the first evaporator, the first capillary and the second evaporator are arranged on the first evaporation pipeline, the second evaporation branch comprises a second condenser, the first condenser is communicated with the second evaporation pipeline of the first evaporator, and the second capillary is arranged on the second evaporation pipeline.
4. A method of controlling a refrigeration system, the method comprising:
acquiring the current refrigerating temperature, the current freezing temperature and the currently set operation mode in real time;
if the operation mode is a quick-freezing mode, controlling the first control switch to be adjusted to a first condensation branch to communicate the compressor and the first condenser, and controlling the second control switch to be adjusted to a first evaporation branch or a second evaporation branch to communicate the first condenser and the first evaporator according to the current refrigeration temperature;
if the operation mode is a non-quick-freezing mode, controlling the first control switch to adjust the first condensation branch or the second condensation branch to communicate the compressor with the first condenser and controlling the second control switch to adjust the first evaporation branch or the second evaporation branch to communicate the first condenser with the first evaporator according to the current refrigerating temperature and the current freezing temperature.
5. The method as claimed in claim 4, wherein if the operation mode is the quick-freeze mode, the step of controlling the first control switch to adjust the first condensing branch to communicate the compressor with the first condenser, and the step of controlling the second control switch to adjust the first evaporating branch or the second evaporating branch to communicate the first condenser with the first evaporator according to the current refrigerating temperature comprises:
if the operation mode is a quick-freezing mode, controlling the first control switch to adjust the first condensation branch to communicate the compressor and the first condenser;
judging whether the current refrigerating temperature is greater than a first preset refrigerating temperature or not;
if the current refrigerating temperature is higher than the first preset refrigerating temperature, controlling the second control switch to adjust the first evaporation branch to communicate the first condenser and the first evaporator;
and if the current refrigerating temperature is not greater than the first preset refrigerating temperature, controlling the second control switch to adjust the second evaporation branch to communicate the first condenser and the first evaporator.
6. The method as claimed in claim 4, wherein the step of controlling the first control switch to adjust the first condensing branch or the second condensing branch to communicate the compressor with the first condenser and to adjust the second control switch to adjust the first evaporating branch or the second evaporating branch to communicate the first condenser with the first evaporator according to the current refrigerating temperature and the current freezing temperature if the operation mode is the non-quick-freezing mode comprises:
if the operation mode is a non-quick-freezing mode, judging whether the current refrigerating temperature is greater than a first preset refrigerating temperature or not and whether the current freezing temperature is greater than a first preset freezing temperature or not;
if the current refrigerating temperature is not more than the first preset refrigerating temperature and the current freezing temperature is more than the first preset freezing temperature, controlling the first control switch to adjust the second condensation branch to communicate the compressor and the first condenser, and controlling the second control switch to adjust the second evaporation branch to communicate the first condenser and the first evaporator;
and if the current refrigerating temperature is not greater than the first preset refrigerating temperature and the current freezing temperature is not greater than the first preset freezing temperature, controlling the compressor to stop.
7. The method as claimed in claim 6, wherein the step of controlling the first control switch to adjust the second condensing branch to communicate the compressor with the first condenser and controlling the second control switch to adjust the second evaporating branch to communicate the first condenser with the first evaporator, if the current refrigerating temperature is not greater than the first preset refrigerating temperature and the current freezing temperature is greater than the first preset freezing temperature, further comprises:
judging whether the current refrigerating temperature is greater than a second preset refrigerating temperature or not;
if the current refrigerating temperature is higher than the second preset refrigerating temperature, controlling the first control switch to adjust the first condensation branch to be communicated with the compressor and the first condenser, controlling the second control switch to adjust the first evaporation branch to be communicated with the first condenser and the first evaporator, and returning to execute the step of judging whether the current refrigerating temperature is higher than the first preset refrigerating temperature and whether the current freezing temperature is higher than the first preset freezing temperature or not if the operation mode is a non-quick-freezing mode;
wherein the second preset refrigeration temperature is greater than the first preset refrigeration temperature.
8. The method as claimed in claim 6, wherein the step of controlling the compressor to stop if the current refrigerating temperature is not greater than the first preset refrigerating temperature and the current freezing temperature is not greater than the first preset freezing temperature further comprises:
judging whether the current refrigerating temperature is greater than a second preset refrigerating temperature or not and whether the current freezing temperature is greater than a second preset freezing temperature or not;
if the current refrigerating temperature is greater than the second preset refrigerating temperature and/or the current freezing temperature is greater than the second preset freezing temperature, controlling the compressor to start, and returning to execute the step of judging whether the current refrigerating temperature is greater than the first preset refrigerating temperature and whether the current freezing temperature is greater than the first preset freezing temperature if the operation mode is a non-quick-freezing mode;
wherein the second preset refrigeration temperature is greater than the first preset refrigeration temperature.
9. The method as claimed in claim 6, wherein the step of determining whether the current refrigerating temperature is higher than the first preset refrigerating temperature and whether the current freezing temperature is higher than the first preset freezing temperature if the operation mode is the non-quick freezing mode further comprises:
if the current refrigerating temperature is greater than the first preset refrigerating temperature and the current freezing temperature is greater than the first preset freezing temperature, controlling the first control switch to adjust the first condensation branch to communicate the compressor and the first condenser, and controlling the second control switch to adjust the first evaporation branch to communicate the first condenser and the first evaporator;
if the current refrigerating temperature is greater than the first preset refrigerating temperature and the current freezing temperature is not greater than the first preset freezing temperature, the first control switch is controlled to be adjusted to the second condensation branch communicated with the compressor and the first condenser, and the second control switch is controlled to be adjusted to the first evaporation branch communicated with the first condenser and the first evaporator.
10. The method as claimed in claim 9, wherein the step of controlling the first control switch to adjust the second condensing branch to communicate the compressor with the first condenser and controlling the second control switch to adjust the first evaporating branch to communicate the first condenser with the first evaporator, if the current refrigerating temperature is greater than the first preset refrigerating temperature and the current freezing temperature is not greater than the first preset freezing temperature, further comprises:
judging whether the current freezing temperature is greater than a second preset freezing temperature or not;
if the current freezing temperature is higher than the second preset freezing temperature, controlling the first control switch to adjust the first condensation branch to be communicated with the compressor and the first condenser, and controlling the second control switch to adjust the first evaporation branch to be communicated with the first condenser and the first evaporator; and returning to execute the step of judging whether the current refrigerating temperature is greater than the first preset refrigerating temperature or not and whether the current freezing temperature is greater than the first preset freezing temperature or not if the operation mode is a non-quick-freezing mode;
wherein the second preset freezing temperature is greater than the first preset freezing temperature.
11. Refrigeration appliance, characterized in that it comprises a control unit and a refrigeration system according to any one of claims 1 to 3, the control unit comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the computer program, when being executed by the processor, realizing the steps of a control method of a refrigeration system according to any one of claims 4 to 9.
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CN111023672A (en) * 2019-12-30 2020-04-17 长虹美菱股份有限公司 Air-cooled refrigerator and control method thereof

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