CN110579032A - Air-cooled refrigerator with multi-cycle refrigeration system and refrigeration control method thereof - Google Patents
Air-cooled refrigerator with multi-cycle refrigeration system and refrigeration control method thereof Download PDFInfo
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- CN110579032A CN110579032A CN201910949350.5A CN201910949350A CN110579032A CN 110579032 A CN110579032 A CN 110579032A CN 201910949350 A CN201910949350 A CN 201910949350A CN 110579032 A CN110579032 A CN 110579032A
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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
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
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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
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/37—Capillary tubes
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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
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
- F25B43/006—Accumulators
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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
- F25B5/02—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity arranged in parallel
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
- F25D11/02—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures
- F25D11/022—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures with two or more evaporators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D29/00—Arrangement or mounting of control or safety devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/25—Control of valves
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- 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
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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)
- Analytical Chemistry (AREA)
- Power Engineering (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
The invention discloses an air-cooled refrigerator with a multi-cycle refrigeration system, which comprises a multi-cycle refrigeration refrigerator system, wherein the multi-cycle refrigeration refrigerator system comprises a compressor, a condenser, a filter, a plurality of electric valves, a capillary tube, an evaporator and a liquid storage device. The invention provides an air-cooled refrigerator with a multi-cycle refrigeration system, which realizes compartment refrigeration or simultaneous refrigeration by an electric valve combination switching mode, avoids the problem that in the process of switching refrigeration from a low-temperature compartment to a high-temperature compartment, a refrigerant is easy to migrate to the low-temperature compartment, improves the efficiency of the refrigeration system, avoids food taint between compartments by arranging an evaporator, adopts a control method of the multi-cycle refrigeration system, realizes reasonable distribution of refrigeration quantity of each compartment according to the principle that the set temperature of each compartment is larger than the actual temperature difference value, the higher the refrigeration priority is, and avoids the problem that the food storage is influenced by large actual temperature deviation of part of compartments when the refrigerator is cooled urgently due to insufficient refrigeration quantity.
Description
Technical Field
The invention belongs to the technical field of refrigerator refrigeration, and relates to an air-cooled refrigerator with a multi-cycle refrigeration system and a refrigeration control method thereof.
Background
With the improvement of living standard of people, consumers have more and more use functions and requirements on the refrigerator, and the air-cooled refrigerator with large volume, multiple doors, multiple temperature areas and free temperature change is gradually favored by the consumers.
at present, a large-volume air-cooled refrigerator mainly adopts two modes to realize compartment refrigeration, wherein the mode is that each compartment is provided with an evaporator, and the refrigeration of each compartment is realized through the control of a multi-cycle refrigeration system, the independent temperature control can not be realized when the evaporator at the tail end of the refrigeration system corresponds to the compartment, and meanwhile, the multi-cycle refrigeration system is switched to a high-temperature compartment at a low-temperature compartment, and a refrigerant is easy to migrate to the low-temperature compartment, so that the refrigeration capacity of a high-temperature evaporator is small, and the efficiency of the refrigeration system is low. And the other mode adopts a single evaporator and air door combined mode to realize the refrigeration of each chamber, the corresponding chambers of the evaporator can not realize independent temperature control, and the problems of food odor tainting among the chambers and the like are solved.
Disclosure of Invention
the invention aims to provide an air-cooled refrigerator with a multi-cycle refrigerating system, which solves the problems that the refrigerating effect of the refrigerator is poor, foods among chambers are easy to taint with odor, and independent control cannot be realized.
The purpose of the invention can be realized by the following technical scheme:
An air-cooled refrigerator with a multi-cycle refrigeration system comprises the multi-cycle refrigeration refrigerator system, wherein the multi-cycle refrigeration refrigerator system comprises a compressor, a condenser, a filter, a plurality of electric valves, a capillary tube, an evaporator and a liquid storage device;
An exhaust port of the compressor is connected with an inlet of a condenser, an outlet of the condenser is connected with an inlet of a filter, an outlet of the filter is connected with an inlet of a first electric valve, an outlet of the first electric valve is respectively connected with an inlet of a first capillary tube, an inlet of a second capillary tube and an inlet of a second electric valve, an outlet of the second electric valve is respectively connected with an inlet of a third capillary tube, an inlet of a fourth capillary tube and an inlet of a fifth capillary tube, and an outlet of the fifth capillary tube is respectively connected with one end of a first evaporator, one end of a second evaporator, one end of a third evaporator and one end;
The other end of the first evaporator is respectively connected with an outlet of the first capillary tube and one end of a first liquid storage device, and the other end of the first liquid storage device is communicated with an inlet b end of the third electric valve; the other end of the second evaporator is respectively connected with a second capillary tube outlet and a second liquid storage device, and the second liquid storage device is communicated with the inlet c end of the third electric valve; the other end of the evaporator is respectively connected with a third capillary tube outlet and a third liquid storage device, and the other end of the third liquid storage device is communicated with a third electric valve inlet d; the other end of the fourth evaporator is connected with a fourth capillary tube outlet and a fourth liquid storage device respectively, the other end of the fourth third liquid storage device is communicated with a third electric valve inlet e, and a third electric valve outlet a is connected with a compressor air suction port.
Further, the first evaporator is arranged in the first chamber, the second evaporator is arranged in the second chamber, the third evaporator is arranged in the third chamber, and the fourth evaporator is arranged in the fourth chamber.
Further, when the first electrically operated valve is in communication with the first capillary: when the third electric valve inlet c is opened and other inlets are closed, the refrigeration cycle formed by the first capillary tube, the first evaporator and the second evaporator realizes the simultaneous refrigeration of the first compartment and the second compartment; when the third electric valve inlet d is opened and other inlets are closed, the refrigeration cycle formed by the first capillary tube, the first evaporator and the third evaporator realizes the simultaneous refrigeration of the first chamber and the third chamber; when the third electric valve inlet e is opened and other inlets are closed, the refrigeration cycle formed by the first capillary tube, the first evaporator and the fourth evaporator realizes the simultaneous refrigeration of the first chamber and the fourth chamber.
further, when the first electrically operated valve is in communication with the second capillary: when the third electric valve inlet b is opened and other inlets are closed, the refrigeration cycle formed by the second capillary tube, the second evaporator and the first evaporator realizes the simultaneous refrigeration of the second chamber and the first chamber; when the third electric valve inlet d is opened and other inlets are closed, the refrigeration cycle formed by the second capillary tube, the second evaporator and the third evaporator realizes the simultaneous refrigeration of the second chamber and the third chamber; and when the third electric valve inlet e is opened and other inlets are closed, the refrigeration cycle formed by the second capillary tube, the second evaporator and the fourth evaporator realizes the simultaneous refrigeration of the second chamber and the fourth chamber.
Further, when the first electrically operated valve is in communication with the second electrically operated valve and the third capillary: when the inlet b of the third electric valve is opened and other inlets are closed, the refrigeration cycle formed by the third capillary tube, the third evaporator and the first evaporator realizes the simultaneous refrigeration of the third chamber and the first chamber; when the third electric valve inlet c is opened and other inlets are closed, the refrigeration cycle formed by the third capillary tube, the third evaporator and the second evaporator realizes the simultaneous refrigeration of the third compartment and the second compartment; and when the inlet e of the third electric valve is opened and other inlets are closed, the refrigeration cycle formed by the third capillary tube, the third evaporator and the fourth evaporator realizes the simultaneous refrigeration of the third chamber and the fourth chamber.
Further, when the first electrically operated valve is in communication with the second electrically operated valve and the fourth capillary: when the inlet b of the third electric valve is opened and other inlets are closed, the fourth capillary tube, the fourth evaporator and the first evaporator form a refrigeration cycle to realize the simultaneous refrigeration of the fourth chamber and the first chamber; when the inlet c of the third electric valve is opened and other inlets are closed, the fourth capillary tube, the fourth evaporator and the second evaporator form a refrigeration cycle to realize the simultaneous refrigeration of the fourth compartment and the second compartment; and when the third electric valve inlet d is opened and other inlets are closed, the fourth capillary tube, the fourth evaporator and the third evaporator form a refrigeration cycle to realize the simultaneous refrigeration of the fourth chamber and the third chamber.
Further, when the first electrically operated valve is in communication with the second electrically operated valve and the fifth capillary: when the third electric valve inlet b is opened and other inlets are closed, the refrigeration cycle formed by the fifth capillary tube and the first evaporator realizes the independent refrigeration of the first chamber; when the third electric valve inlet c is opened and other inlets are closed, the refrigeration cycle formed by the fifth capillary and the second evaporator realizes the independent refrigeration of the second chamber; when the third electric valve inlet d is opened and other inlets are closed, the refrigeration cycle formed by the fifth capillary tube and the third evaporator realizes the independent refrigeration of the third chamber; and when the third electric valve inlet e is opened and other inlets are closed, the fourth compartment is independently refrigerated through the refrigeration cycle formed by the fifth capillary tube and the fourth evaporator.
a refrigeration control method of an air-cooled refrigerator with a multi-cycle refrigeration system comprises the following steps:
S1, when only one compartment has a refrigeration request, the compartment is refrigerated independently, and in the refrigeration process, if other compartments have refrigeration requests, the next refrigeration state is switched;
s2, when two compartments have refrigeration requests at the same time, the evaporators corresponding to the two compartments realize simultaneous refrigeration in a series connection mode, the evaporator corresponding to the compartment with low set temperature is arranged at the front end of the evaporator corresponding to the compartment with high set temperature, and when the refrigeration request of any compartment is finished or the current refrigeration state runs for more than t minutes, the next refrigeration state is switched;
s3, when three or four compartments have refrigeration requests at the same time, selecting two compartments with the highest priority for simultaneous refrigeration according to the refrigeration priority judgment principle, realizing simultaneous refrigeration by the evaporators corresponding to the two compartments in a series connection mode, arranging the evaporator corresponding to the compartment with lower set temperature at the front end of the evaporator corresponding to the compartment with higher set temperature, and switching to the next refrigeration state when the refrigeration request of any compartment is finished or the current refrigeration state runs for more than t minutes;
and S4, when all the compartment refrigeration requests are finished, stopping the compressor.
The invention has the beneficial effects that:
the invention provides an air-cooled refrigerator with a multi-cycle refrigeration system, which realizes independent refrigeration of any one compartment or simultaneous refrigeration of any two compartments by an electric valve combination switching mode, achieves the function of full temperature change from refrigeration (4 ℃) to freezing (-18 ℃) of all compartments of the air-cooled refrigerator, and solves the problems of taint of food between the compartments and the like by arranging evaporators in all the compartments;
The evaporator corresponding to the low-temperature chamber is arranged at the front end of the refrigerating system, and the evaporator corresponding to the high-temperature chamber is arranged at the rear end of the refrigerating system, so that the problems that the refrigerating capacity of the high-temperature evaporator is small and the efficiency of the refrigerating system is low due to the fact that a refrigerant is easy to migrate to the low-temperature chamber in the process of switching the refrigerating system from the low-temperature chamber to the high-temperature chamber are solved;
According to the control method of the multi-cycle refrigeration system, the refrigeration quantity of each chamber is reasonably distributed according to the principle that the difference value is larger and the refrigeration priority is higher when the set temperature of each chamber is compared with the actual temperature difference value, and the problem that the food storage is influenced due to the fact that the refrigeration quantity is insufficient or the actual temperature deviation of part of chambers is large when a refrigerator is cooled urgently is solved.
drawings
in order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of an air-cooled refrigerator with a multi-cycle refrigeration system according to the present invention.
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, an air-cooled refrigerator with a multi-cycle refrigeration system includes a multi-cycle refrigeration refrigerator system, which includes a compressor 1, a condenser 2, a filter 3, a plurality of electric valves, a capillary tube, an evaporator and a liquid reservoir;
an exhaust port of the compressor 1 is connected with an inlet of a condenser 2, an outlet of the condenser 2 is connected with an inlet of a filter 3, an outlet of the filter 3 is connected with an inlet of a first electric valve 41, an outlet of the first electric valve 41 is respectively connected with an inlet of a first capillary 51, an inlet of a second capillary 52 and an inlet of a second electric valve 42, an outlet of the second electric valve 42 is respectively connected with an inlet of a third capillary 53, an inlet of a fourth capillary 54 and an inlet of a fifth capillary 55, and an outlet of the fifth capillary 55 is respectively connected with one end of a first evaporator 61, a second evaporator 62, a third evaporator 63 and a fourth evaporator 64;
The other end of the first evaporator 61 is respectively connected with the outlet of the first capillary tube 51 and one end of the first liquid storage device 71, and the other end of the first liquid storage device 71 is communicated with the inlet b end of the third electric valve 8; the other end of the second evaporator 62 is respectively connected with the outlet of the second capillary tube 52 and the second liquid storage device 72, and the second liquid storage device 72 is communicated with the inlet c end of the third electric valve 8; the other end of the evaporator 63 is connected with the outlet of the third capillary 53 and the third liquid reservoir 73, and the other end of the third liquid reservoir 73 is communicated with the inlet d of the third electric valve 8; the other end of the fourth evaporator 64 is connected to the outlet of the fourth capillary tube 54 and the fourth accumulator 74, the other end of the fourth third accumulator 73 is connected to the inlet e of the third electric valve 8, and the outlet a of the third electric valve 8 is connected to the inlet of the compressor 1.
the first evaporator 61 is disposed in the first compartment, the second evaporator 62 is disposed in the second compartment, the third evaporator 63 is disposed in the third compartment, and the fourth evaporator 64 is disposed in the fourth compartment.
when the first electro valve 41 is in communication with the first capillary 51:
When the inlet c of the third electric valve 8 is opened and the other inlets are closed, the refrigeration cycle formed by the first capillary tube 51, the first evaporator 61 and the second evaporator 62 realizes the simultaneous refrigeration of the first compartment and the second compartment; when the inlet d of the third electric valve 8 is opened and the other inlets are closed, the refrigeration cycle formed by the first capillary tube 51, the first evaporator 61 and the third evaporator 63 realizes the simultaneous refrigeration of the first chamber and the third chamber; when the inlet e of the third motor-operated valve 8 is opened and the other inlets are closed, the refrigeration cycle constituted by the first capillary tube 51, the first evaporator 61 and the fourth evaporator 64 realizes the simultaneous refrigeration of the first compartment and the fourth compartment.
when the first electro valve 41 is in communication with the second capillary 52:
When the inlet b of the third electric valve 8 is opened and the other inlets are closed, the refrigeration cycle formed by the second capillary tube 52, the second evaporator 62 and the first evaporator 61 realizes the simultaneous refrigeration of the second chamber and the first chamber; when the inlet d of the third electric valve 8 is opened and other inlets are closed, the refrigeration cycle formed by the second capillary tube 52, the second evaporator 62 and the third evaporator 63 realizes the simultaneous refrigeration of the second chamber and the third chamber; when the inlet e of the third motor-operated valve 8 is opened and the other inlets are closed, the refrigeration cycle constituted by the second capillary tube 52, the second evaporator 62 and the fourth evaporator 64 realizes the simultaneous refrigeration of the second compartment and the fourth compartment.
When the first electro valve 41 is in communication with the second electro valve 42 and the third capillary 53:
When the inlet b of the third electric valve 8 is opened and the other inlets are closed, the refrigeration cycle formed by the third capillary 53, the third evaporator 63 and the first evaporator 61 realizes the simultaneous refrigeration of the third chamber and the first chamber; when the inlet c of the third electric valve 8 is opened and other inlets are closed, the refrigeration cycle formed by the third capillary 53, the third evaporator 63 and the second evaporator 62 realizes the simultaneous refrigeration of the third compartment and the second compartment; when the inlet e of the third electric valve 8 is opened and the other inlets are closed, the refrigeration cycle constituted by the third capillary 53, the third evaporator 63 and the fourth evaporator 64 realizes the simultaneous refrigeration of the third compartment and the fourth compartment.
when the first electro valve 41 is in communication with the second electro valve 42 and the fourth capillary 54:
when the inlet b of the third electric valve 8 is opened and the other inlets are closed, the refrigeration cycle formed by the fourth capillary tube 54, the fourth evaporator 64 and the first evaporator 61 realizes the simultaneous refrigeration of the fourth chamber and the first chamber; when the inlet c of the third electric valve 8 is opened and the other inlets are closed, the refrigeration cycle formed by the fourth capillary tube 54, the fourth evaporator 64 and the second evaporator 62 realizes the simultaneous refrigeration of the fourth chamber and the second chamber; when the inlet d of the third motor-operated valve 8 is opened and the other inlets are closed, the refrigeration cycle constituted by the fourth capillary tube 54, the fourth evaporator 64 and the third evaporator 63 realizes the simultaneous refrigeration of the fourth compartment and the third compartment.
when the first electric valve 41 is in communication with the second electric valve 42 and the fifth capillary 55:
when the inlet b of the third electric valve 8 is opened and other inlets are closed, the refrigeration cycle formed by the fifth capillary 55 and the first evaporator 61 realizes the independent refrigeration of the first chamber; when the inlet c of the third electric valve 8 is opened and other inlets are closed, the refrigeration cycle formed by the fifth capillary tube 55 and the second evaporator 62 realizes the independent refrigeration of the second chamber; when the inlet d of the third electric valve 8 is opened and other inlets are closed, the refrigeration cycle formed by the fifth capillary tube 55 and the third evaporator 63 realizes the independent refrigeration of the third chamber; when the inlet e of the third electric valve 8 is opened and the other inlets are closed, the fourth compartment is cooled alone by the refrigeration cycle formed by the fifth capillary tube 55 and the fourth evaporator 64.
setting Tac as compartment sensor temperature, TON as compartment startup point temperature, and TOFF as compartment shutdown point temperature, and making difference Δ t equal to Tac- (TON + TOFF)/2;
The cooling priority of each compartment is determined by comparing the difference between the difference,
A refrigeration control method of an air-cooled refrigerator with a multi-cycle refrigeration system comprises the following steps:
S1: when only one compartment has a refrigeration request, the compartment is independently refrigerated, and in the refrigeration process, if other compartments have refrigeration requests, the next refrigeration state is switched;
S2, when two compartments have refrigeration requests at the same time, the evaporators corresponding to the two compartments realize simultaneous refrigeration in a series connection mode, the evaporator corresponding to the compartment with low set temperature is arranged at the front end of the evaporator corresponding to the compartment with high set temperature, and when the refrigeration request of any compartment is finished or the current refrigeration state runs for more than t minutes, the next refrigeration state is switched;
S3, when three or four compartments have refrigeration requests at the same time, selecting two compartments with the highest priority for simultaneous refrigeration according to the refrigeration priority judgment principle, realizing simultaneous refrigeration by the evaporators corresponding to the two compartments in a series connection mode, arranging the evaporator corresponding to the compartment with lower set temperature at the front end of the evaporator corresponding to the compartment with higher set temperature, and switching to the next refrigeration state when the refrigeration request of any compartment is finished or the current refrigeration state runs for more than t minutes;
s4: when all compartment cooling requests are over, the compressor is shut down.
Wherein the value range of t is 0-90 minutes.
the foregoing is merely exemplary and illustrative of the principles of the present invention and various modifications, additions and substitutions of the specific embodiments described herein may be made by those skilled in the art without departing from the principles of the present invention or exceeding the scope of the claims set forth herein.
Claims (8)
1. The utility model provides an air-cooled refrigerator with multicycle refrigerating system which characterized in that: the system comprises a multi-cycle refrigeration refrigerator system, wherein the multi-cycle refrigeration refrigerator system comprises a compressor (1), a condenser (2), a filter (3), a plurality of electric valves, a capillary tube, an evaporator and a liquid storage device;
an exhaust port of the compressor (1) is connected with an inlet of a condenser (2), an outlet of the condenser (2) is connected with an inlet of a filter (3), an outlet of the filter (3) is connected with an inlet of a first electric valve (41), an outlet of the first electric valve (41) is respectively connected with an inlet of a first capillary tube (51), an inlet of a second capillary tube (52) and an inlet of a second electric valve (42), an outlet of the second electric valve (42) is respectively connected with an inlet of a third capillary tube (53), an inlet of a fourth capillary tube (54) and an inlet of a fifth capillary tube (55), and an outlet of the fifth capillary tube (55) is respectively connected with one end of a first evaporator (61), one end of a second evaporator (62), one end of a third evaporator (63) and one end of a fourth evaporator (64);
the other end of the first evaporator (61) is respectively connected with an outlet of a first capillary tube (51) and one end of a first liquid storage device (71), and the other end of the first liquid storage device (71) is communicated with an inlet b end of a third electric valve (8); the other end of the second evaporator (62) is respectively connected with an outlet of a second capillary tube (52) and a second liquid storage device (72), and the second liquid storage device (72) is communicated with the inlet c end of a third electric valve (8); the other end of the evaporator (63) is respectively connected with an outlet of a third capillary tube (53) and a third liquid storage device (73), and the other end of the third liquid storage device (73) is communicated with an inlet d of a third electric valve (8); the other end of the fourth evaporator (64) is respectively connected with an outlet of a fourth capillary tube (54) and a fourth liquid storage device (74), the other end of a fourth third liquid storage device (73) is communicated with an inlet e of a third electric valve (8), and an outlet a of the third electric valve (8) is connected with an air suction port of the compressor (1).
2. The air-cooled refrigerator with a multi-cycle refrigerating system as claimed in claim 1, wherein: the first evaporator (61) is arranged in a first compartment, the second evaporator (62) is arranged in a second compartment, the third evaporator (63) is arranged in a third compartment, and the fourth evaporator (64) is arranged in a fourth compartment.
3. The air-cooled refrigerator with a multi-cycle refrigerating system as claimed in claim 2, wherein: when the first electric valve (41) is in communication with the first capillary (51): when the inlet c of the third electric valve (8) is opened and other inlets are closed, the refrigeration cycle formed by the first capillary tube (51), the first evaporator (61) and the second evaporator (62) realizes the simultaneous refrigeration of the first chamber and the second chamber; when the inlet d of the third electric valve (8) is opened and other inlets are closed, the refrigeration cycle formed by the first capillary tube (51), the first evaporator (61) and the third evaporator (63) realizes the simultaneous refrigeration of the first chamber and the third chamber; when the inlet e of the third electric valve (8) is opened and other inlets are closed, the refrigeration cycle formed by the first capillary tube (51), the first evaporator (61) and the fourth evaporator (64) realizes the simultaneous refrigeration of the first chamber and the fourth chamber.
4. The air-cooled refrigerator with a multi-cycle refrigerating system as claimed in claim 2, wherein: when the first electric valve (41) is in communication with the second capillary (52): when the inlet b of the third electric valve (8) is opened and other inlets are closed, the refrigeration cycle formed by the second capillary tube (52), the second evaporator (62) and the first evaporator (61) realizes the simultaneous refrigeration of the second chamber and the first chamber; when the inlet d of the third electric valve (8) is opened and other inlets are closed, the refrigeration cycle formed by the second capillary tube (52), the second evaporator (62) and the third evaporator (63) realizes the simultaneous refrigeration of the second chamber and the third chamber; when the inlet e of the third electric valve (8) is opened and other inlets are closed, the refrigeration cycle formed by the second capillary tube (52), the second evaporator (62) and the fourth evaporator (64) realizes the simultaneous refrigeration of the second chamber and the fourth chamber.
5. The air-cooled refrigerator with a multi-cycle refrigerating system as claimed in claim 2, wherein: when the first electric valve (41) is in communication with the second electric valve (42) and the third capillary (53): when the inlet b of the third electric valve (8) is opened and other inlets are closed, the refrigeration cycle formed by the third capillary tube (53), the third evaporator (63) and the first evaporator (61) realizes the simultaneous refrigeration of the third chamber and the first chamber; when the inlet c of the third electric valve (8) is opened and other inlets are closed, the refrigeration cycle formed by the third capillary tube (53), the third evaporator (63) and the second evaporator (62) realizes the simultaneous refrigeration of the third chamber and the second chamber; and when the inlet e of the third electric valve (8) is opened and other inlets are closed, the refrigeration cycle formed by the third capillary tube (53), the third evaporator (63) and the fourth evaporator (64) realizes the simultaneous refrigeration of the third chamber and the fourth chamber.
6. the air-cooled refrigerator with a multi-cycle refrigerating system as claimed in claim 2, wherein: when the first electric valve (41) is in communication with the second electric valve (42) and the fourth capillary tube (54): when the inlet b of the third electric valve (8) is opened and other inlets are closed, the fourth capillary tube (54), the fourth evaporator (64) and the first evaporator (61) form a refrigeration cycle to realize the simultaneous refrigeration of the fourth chamber and the first chamber; when the inlet c of the third electric valve (8) is opened and other inlets are closed, the refrigeration cycle formed by the fourth capillary tube (54), the fourth evaporator (64) and the second evaporator (62) realizes the simultaneous refrigeration of the fourth chamber and the second chamber; when the inlet d of the third electric valve (8) is opened and the other inlets are closed, the refrigeration cycle formed by the fourth capillary tube (54), the fourth evaporator (64) and the third evaporator (63) realizes the simultaneous refrigeration of the fourth chamber and the third chamber.
7. The air-cooled refrigerator with a multi-cycle refrigerating system as claimed in claim 2, wherein: when the first electric valve (41) is in communication with the second electric valve (42) and the fifth capillary tube (55): when the inlet b of the third electric valve (8) is opened and other inlets are closed, the refrigeration cycle formed by the fifth capillary tube (55) and the first evaporator (61) realizes the independent refrigeration of the first chamber; when the inlet c of the third electric valve (8) is opened and other inlets are closed, the refrigeration cycle formed by the fifth capillary tube (55) and the second evaporator (62) realizes the independent refrigeration of the second chamber; when the inlet d of the third electric valve (8) is opened and other inlets are closed, the refrigeration cycle formed by the fifth capillary tube (55) and the third evaporator (63) realizes the independent refrigeration of the third chamber; when the inlet e of the third electric valve (8) is opened and other inlets are closed, the fourth compartment is independently refrigerated through a refrigeration cycle formed by a fifth capillary tube (55) and a fourth evaporator (64).
8. the refrigeration control method of the air-cooled refrigerator with the multi-cycle refrigeration system as claimed in claim 1, wherein: the method comprises the following steps:
s1, when only one compartment has a refrigeration request, the compartment is refrigerated independently, and in the refrigeration process, if other compartments have refrigeration requests, the next refrigeration state is switched;
S2, when two compartments have refrigeration requests at the same time, the evaporators corresponding to the two compartments realize simultaneous refrigeration in a series connection mode, the evaporator corresponding to the compartment with low set temperature is arranged at the front end of the evaporator corresponding to the compartment with high set temperature, and when the refrigeration request of any compartment is finished or the current refrigeration state runs for more than t minutes, the next refrigeration state is switched;
S3, when three or four compartments have refrigeration requests at the same time, selecting two compartments with the highest priority for simultaneous refrigeration according to the refrigeration priority judgment principle, realizing simultaneous refrigeration by the evaporators corresponding to the two compartments in a series connection mode, arranging the evaporator corresponding to the compartment with lower set temperature at the front end of the evaporator corresponding to the compartment with higher set temperature, and switching to the next refrigeration state when the refrigeration request of any compartment is finished or the current refrigeration state runs for more than t minutes;
And S4, when all the compartment refrigeration requests are finished, stopping the compressor.
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| CN201910949350.5A CN110579032A (en) | 2019-10-08 | 2019-10-08 | Air-cooled refrigerator with multi-cycle refrigeration system and refrigeration control method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113834280A (en) * | 2021-09-24 | 2021-12-24 | 珠海格力电器股份有限公司 | Control method and device of freezing and refrigerating system and refrigerator |
| CN115164510A (en) * | 2022-08-01 | 2022-10-11 | 长虹美菱股份有限公司 | Combined refrigerator control method and refrigerator thereof |
| CN115371351A (en) * | 2022-08-24 | 2022-11-22 | 青岛海容商用冷链股份有限公司 | Temperature control method and system for vending machine |
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| CN211476357U (en) * | 2019-10-08 | 2020-09-11 | 长虹美菱股份有限公司 | Air-cooled refrigerator with multi-cycle refrigerating system |
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| CN109539618A (en) * | 2018-12-25 | 2019-03-29 | 长虹美菱股份有限公司 | The multi-cycle refrigeration system and its control method of wind cooling refrigerator |
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| CN113834280A (en) * | 2021-09-24 | 2021-12-24 | 珠海格力电器股份有限公司 | Control method and device of freezing and refrigerating system and refrigerator |
| CN115164510A (en) * | 2022-08-01 | 2022-10-11 | 长虹美菱股份有限公司 | Combined refrigerator control method and refrigerator thereof |
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