CN1467459A - Controlling the operation of cooling systems provided with two evaporators - Google Patents
Controlling the operation of cooling systems provided with two evaporators Download PDFInfo
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- CN1467459A CN1467459A CNA021583838A CN02158383A CN1467459A CN 1467459 A CN1467459 A CN 1467459A CN A021583838 A CNA021583838 A CN A021583838A CN 02158383 A CN02158383 A CN 02158383A CN 1467459 A CN1467459 A CN 1467459A
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- temperature
- circulation
- fan
- storeroom
- evaporimeter
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- 238000001816 cooling Methods 0.000 title claims description 28
- 238000000034 method Methods 0.000 claims abstract description 110
- 239000003507 refrigerant Substances 0.000 claims abstract description 40
- 238000005057 refrigeration Methods 0.000 claims description 75
- 235000013305 food Nutrition 0.000 claims description 24
- 230000004087 circulation Effects 0.000 claims description 17
- 230000000052 comparative effect Effects 0.000 claims description 7
- 238000013461 design Methods 0.000 claims description 7
- 238000005259 measurement Methods 0.000 claims description 6
- 238000010977 unit operation Methods 0.000 claims 2
- 238000012937 correction Methods 0.000 description 14
- 239000007788 liquid Substances 0.000 description 10
- 238000001704 evaporation Methods 0.000 description 9
- 230000008020 evaporation Effects 0.000 description 8
- 238000007906 compression Methods 0.000 description 6
- 230000006835 compression Effects 0.000 description 6
- 230000008901 benefit Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000009920 food preservation Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 235000013361 beverage Nutrition 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 230000004941 influx Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000796 flavoring agent Substances 0.000 description 1
- 235000019634 flavors Nutrition 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000006200 vaporizer Substances 0.000 description 1
Images
Classifications
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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
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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
- F25B49/00—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
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/02—Compressor control
- F25B2600/025—Compressor control by controlling speed
- F25B2600/0251—Compressor control by controlling speed with on-off operation
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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
- F25B2600/11—Fan speed control
- F25B2600/112—Fan speed control of evaporator fans
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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
- F25B2600/2511—Evaporator distribution 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
- F25B5/00—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity
- F25B5/02—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity arranged in parallel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2700/00—Means for sensing or measuring; Sensors therefor
- F25D2700/12—Sensors measuring the inside temperature
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
- Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
- Air Conditioning Control Device (AREA)
Abstract
An operation control method of a refrigerator with two evaporators is provided to minimize temperature deviation of each chamber by adjusting distribution of a refrigerant supplied to each evaporator according to the temperature of each chamber. In an operation control method of a refrigerator with two evaporators, the upper limit value and lowest limit value of temperature in first and second chambers are set up to a control unit in advance. A predetermined value of temperature is set up to a section between the upper limit value of temperature and the lowest limit value of temperature. The temperature of each chamber is measured from temperature sensors each installed to the first and second chambers and information about the temperature of each chamber is transmitted to the control unit. The control unit decides which one of the temperatures of the chambers is relatively higher in an area of exceeding the lowest limit value of temperature, and a valve unit is opened toward the evaporator of the chamber with high temperature at a predetermined rate. Thus, the distribution of a refrigerant supplied to each evaporator is adjusted according to the temperature of each chamber.
Description
Invention field
The present invention relates to a kind of refrigeration system progress control method.
Prior art
Usually, refrigerator is a kind of device that is used for the long-period freshness preserving storage food.It can be divided into two parts usually: the casing of a plurality of food storage chamber and the cooling cycle system of cooling beverage or food storeroom are arranged.
The critical piece of cooling cycle system comprises compressor, condenser, evaporimeter and expansion valve.Usually, compressor and condenser are installed in basifacial Machine Room behind the casing, and evaporimeter and expansion valve then are installed in the zone of closing on food storage chamber, and the food storage chamber of casing obtains cooling by follow procedure:
At first, gaseous refrigerant is compressed by compressor, and the cold-producing medium after the compression is transported in the condenser.Cold-producing medium in the condenser is by the liquefaction of the heat exchange in the condenser.When cold-producing medium when expansion valve sprays into evaporimeter, liquid refrigerant expands rapidly and is evaporated to gaseous state.At this moment, cold-producing medium will absorb heat from the outside of evaporimeter, therefore cool off food storage chamber.After cold-producing medium after the evaporation returned compressor, the compression by compression was converted into liquid state, repeats above-mentioned condensation, expansion, evaporation and compression cycle, just can be under a lower state of temperature cooling beverage or food storeroom.
At this moment, this single evaporimeter just constitutes the refrigeration system of refrigerator for the mode of a plurality of food storage chamber supplied with cooling air.In recent years, in order to make full use of each food storage chamber and to improve refrigeration performance, refrigeration system is made of a plurality of evaporimeters that are installed separately and control.
Therefore, the refrigeration system of being made up of a plurality of evaporimeters (for convenience of description, be called the refrigeration system of forming by two evaporimeters later on) comprised a refrigerant pipe that arm arranged, the cold-producing medium of coming from compressor and condenser this pipe of flowing through, this refrigerant pipe is connected respectively to two evaporimeters (F-evaporimeter and R-evaporimeter).In the position of branch point one valve gate cell has been installed, has been used for opening/closing two arm paths.Therefore, by the switching of valve unit, cold-producing medium just can flow in F-evaporimeter or the R-evaporimeter, so just can optionally cool off one or two food storage chamber.
Usually, there is the refrigeration system of two evaporimeters to work in the following manner: if the temperature of all food storage chamber has reached the predetermined temperature of control module, compressor will shut down, if the temperature range of arbitrary food storage chamber has surpassed the predetermined temperature of control module, refrigeration system will be moved compressor.So repeat running, just can by control module with the temperature maintenance of each food storage chamber within the temperature range of being scheduled to.
Yet, the refrigeration system temperature control method of this food storage chamber, promptly the cold-producing medium of refrigerator only flows to one of them in two evaporimeters, has caused the temperature of each food storage chamber to have the big temperature difference.In other words, when in two evaporimeters of refrigerant flow direction any, cold-producing medium not in another evaporimeter, fan carries cooling air system also will shut down.Final result is, when cooling air system stops circulation time, will produce the big temperature difference between food storage chamber, causes when evaporimeter is out of service, and this evaporimeter brings into operation again.
And, if the refrigeration system of two aforementioned evaporation devices is arranged to be carried out after the circulation of arbitrary evaporimeter refrigerant conveying, mode by the valve conversion, execution is to the circulation of another evaporimeter refrigerant conveying, will produce a problem: the cold-producing medium of inflow evaporator will be trapped in the evaporimeter when kind of refrigeration cycle stops.In other words, if to F-evaporimeter refrigerant conveying, carry out the F-circulation, by the valve conversion,, carry out the R-circulation afterwards to R-evaporimeter refrigerant conveying, carrying out the R-circulation time so, the cold-producing medium that flows into the F-evaporimeter does not flow, but is trapped in the F evaporimeter with the state that is close to liquid.Equally, when R-circulation and compressor are out of service, also can produce same problem.Therefore, if do not use certain equipment and method to extract the cold-producing medium that is trapped in the evaporimeter out, cold-producing medium will be trapped in each evaporimeter always.
Yet, after a kind of refrigeration cycle is finished, the whole cold-producing mediums that are trapped in evaporimeter are drawn into compressor or condenser will be difficult.The result is, when carrying out another circulation time, the phenomenon that cold-producing medium lacks will occur, and this will cause refrigeration performance to descend.
And when compressor was strengthened (gain) running, the liquid refrigerant that is trapped in the evaporimeter was drawn towards compressor.The result is, will produce lubrication problem in the compresser cylinder, causes its reliability not ensure.
Summary of the invention
Therefore, The present invention be directed to a kind of progress control method of the system of two evaporimeters, use this method, can avoid the restriction of prior art and the problem that shortcoming is brought substantially.
A target of the present invention is the temperature difference that reduces between the refrigerator food storage chamber that two evaporimeters are arranged.
Another target of the present invention is when kind of refrigeration cycle is changed, and is trapped in cold-producing medium in the evaporimeter by extraction, prevents the shortage phenomenon of cold-producing medium, guarantees the reliability of compressor.
Another target of the present invention is to improve the performance of the refrigeration system that two evaporimeters are arranged.
Other advantage of the present invention, target and feature, concerning one of ordinary skill in the art, a part will become clear and know from experience by the invention example by following analysis, and some will be illustrated in the following description.By the structure that in description and claim and accompanying drawing, particularly points out, can be familiar with and obtain the objectives and other advantages of the present invention.
As embodying and extensively description herein,, provide a kind of progress control method that the refrigeration system of two evaporimeters is arranged for obtaining the object of the invention target and advantage.This method has comprised following steps: (a) for each storeroom reference temperature is set; (c) measure the temperature of each storeroom; (d) the measurement temperature of each storeroom of comparison; And, adjust the cold-producing medium influx of relevant storeroom evaporimeter (e) based on the temperature comparative result of each storeroom.
Herein, step (c) is finished by the temperature sensor that is installed in each food storage chamber, and reference temperature comprises ceiling temperature and lower limit temperature.
In step (e), the refrigerant amount of inflow evaporator is installed in the aperture efficiency of the valve of the refrigerant pipe branch point that links to each other with each storeroom and regulates by adjustment.If the temperature of each storeroom has all surpassed ceiling temperature, the aperture efficiency of valve then is 50%: 50%, if identical in a certain zone of the temperature of each storeroom more than lower limit temperature, the aperture efficiency of valve also is 50%: 50%.If the temperature in arbitrary storeroom is higher than other storeroom in a certain zone more than lower limit temperature, system is with the aperture efficiency of by-pass valve control, and the evaporimeter that has the storeroom of higher temperature with respect to other storeroom will obtain bigger opening.And, if the temperature in arbitrary storeroom below lower limit temperature, system is by-pass valve control, makes ownership cryogen all flow to the evaporimeter that other storeroom relatively has the storeroom of higher temperature.If the temperature of all storerooms all is lower than lower limit temperature, compressor is with out of service.
The present invention provides a kind of progress control method of the refrigeration system that two evaporimeters are arranged on the other hand, and this method may further comprise the steps: (b) for each storeroom the humidity province is set; (c) measure the temperature of each storeroom; (d) the measurement temperature of each storeroom of comparison; (e), adjust the cold-producing medium influx of relevant storeroom evaporimeter based on the temperature comparative result of each storeroom.
Herein, step (c) is finished by the temperature sensor that is installed in each food storage chamber, and the humidity province comprises: the humidity province An that surpasses ceiling temperature; Be lower than ceiling temperature but be higher than the humidity province Bn of design temperature; Be lower than design temperature but surpass the humidity province Cn of lower limit temperature; Be lower than the humidity province Dn of lower limit temperature.Step (d) is by relatively finish mensuration temperature and each humidity province of each storeroom.
And, in step (e), can be installed in the aperture efficiency of valve at the branch point place of the refrigerant pipe that links to each other with each storeroom evaporimeter by control, control the amount of the cold-producing medium of inflow evaporator.If the humidity province of each storeroom is mutually the same, valve is also opened with the aperture efficiency of equalization so.This moment, the aperture efficiency of valve is preferably 50%: 50%.If all in the Dn humidity province, compressor will quit work in the humidity province of all storerooms.If have only one to belong to the Dn humidity province in all storeroom humidity provinces, so, concerning storeroom that belongs to this humidity province and the storeroom that belongs to other humidity province, the aperture efficiency of valve is 0%: 100%.Belong to the An humidity province if having only one in the humidity province of all storerooms, the humidity province of another storeroom all belongs to the Cn humidity province, and so, concerning storeroom that belongs to the An humidity province and the storeroom that belongs to the Cn humidity province, the aperture efficiency of valve is 100%: 0%.If the humidity province of a storeroom belongs to the Bn humidity province, another belongs to the Cn humidity province, concerning the storeroom that belongs to the relatively-high temperature humidity province, under the control of system, valve is bigger in this pipeline upper shed, at this moment, concerning the storeroom in the storeroom that belongs to the high-temperature temperature district and cryogenic temperature district, the ratio of the aperture efficiency of valve is preferably 80%: 20%.
The present invention provides a kind of progress control method of the refrigeration system that two evaporimeters are arranged on the other hand, this controlling party rule comprise step (f) when refrigeration system by the by-pass valve control gate cell from the F-cyclic transformation to the R-circulation time, section is being closed valve gate cell operation compressor in (Δ t) at the fixed time.Cold-producing medium passes through the F-condenser successively in the F-circulation of this place speech, flow through F-expansion cell and F-evaporimeter, and cold-producing medium passes through R-condenser, flow through R-expansion cell and R-evaporimeter successively in the R-circulation.
Herein, preferably, operation F-fan was with the step of cooling F-expansion cell when this method also was included in execution in step (f).And, the step of operation condenser fan when this method also is included in execution in step (f).
The present invention provides a kind of progress control method of the refrigeration system that two evaporimeters are arranged on the other hand, and this controlling party rule comprises that step (g) circulates or the R-circulation time when finishing F-, is closing valve gate cell operation compressor at the fixed time in the section (Δ t).Cold-producing medium passes through the F-condenser successively in the F-circulation of this place speech, flow through F-expansion cell and F-evaporimeter, and cold-producing medium passes through R-condenser, flow through R-expansion cell and R-evaporimeter successively in the R-circulation.
Preferably, this method also is included in the step of execution in step (g) luck line correlation fan.And, operation condenser fan when this method also is included in execution in step (g).
The present invention provides a kind of progress control method of refrigeration system on the other hand.This method may further comprise the steps: finish F-circulation or R-circulation time, closing valve gate cell 3 operation compressors at the fixed time in the section (Δ t), cold-producing medium is successively by the F-condenser in the F-circulation of this place speech, flow through F-expansion cell and F-evaporimeter, and cold-producing medium passes through R-condenser, flow through R-expansion cell and R-evaporimeter successively in the R-circulation; After compressor shuts down, intermittently move F-fan and R-fan respectively, be used to cool off F-expansion cell and R-expansion cell.。
This method is further comprising the steps of: carry out F-circulation or R-circulate both one of the time, the evaporator fan of another circulation of having shut down of operation intermittently.The method is further comprising the steps of: carry out and finish F-circulation or R-circulation time, at the fixed time the fan of the corresponding kind of refrigeration cycle evaporimeter of time-delay operation in the section.The method is further comprising the steps of: carry out and finish F-circulation or R-circulation time, time-delay moves corresponding kind of refrigeration cycle evaporator fan and intermittently moves this fan in the section at the fixed time.At this moment, the time interval ratio of F-fan and intermittent running time of R-fan and dwell time is 4: 6.
The present invention provides a kind of progress control method that moves F-circulation or R-circulation selectively of refrigeration system on the other hand, cold-producing medium is successively by the F-condenser in the F-circulation of this place speech, flow through F-expansion cell and F-evaporimeter, and cold-producing medium passes through R-condenser, flow through R-expansion cell and R-evaporimeter successively in the R-circulation.This method may further comprise the steps: after compressor is out of service, also intermittently move F-fan and R-fan.
This method is further comprising the steps of: when carrying out F-circulation or R-circulation time, intermittently move the evaporator fan of another kind of refrigeration cycle that has shut down.This method is further comprising the steps of: when carrying out and finish F-circulation or R-circulation time, the fan of the corresponding kind of refrigeration cycle evaporimeter of operation of delaying time in the section at the fixed time.This method is further comprising the steps of: carry out and finish F-circulation or R-circulation time, section is delayed time interiorly and is moved corresponding kind of refrigeration cycle evaporator fan and intermittently move this fan at the fixed time.At this moment, the ratio of F-fan and intermittent running time of R-fan and dwell time is 4: 6.
Should be appreciated that, all only to have exemplary and indicative meaning, only as claim is further explained no matter be the summation of front of the present invention or following detailed description.
The accompanying drawing summary
Accompanying drawing constitutes the application's a part, so that better understand the present invention, these accompanying drawings have shown embodiments of the invention, with the common explanation of specification principle of the present invention.Wherein:
Fig. 1 is the schematic diagram that the refrigeration system of two evaporimeters is arranged;
Fig. 2 is the flow chart of progress control method of the refrigeration system of first embodiment of the invention;
Fig. 3 is the valve unit aperture efficiency table that depends on each food preservation room temperature in the refrigeration system progress control method of first embodiment of the invention;
Fig. 4 is the progress control method flow chart of the correction embodiment of first embodiment of the invention;
Fig. 5 is the valve unit aperture efficiency table that depends on each food preservation room temperature in the refrigeration system progress control method of first embodiment of the invention correction embodiment;
Fig. 6 is the schematic diagram of the refrigeration system progress control method of second embodiment of the invention;
Fig. 7 is the schematic diagram of the refrigeration system progress control method of second embodiment of the invention correction embodiment;
Fig. 8 is the schematic diagram of the refrigeration system progress control method of third embodiment of the invention;
Fig. 9 is the schematic diagram of the refrigeration system progress control method of fourth embodiment of the invention.
Detailed Description Of The Invention
Describe preferred embodiment below in detail, the example has been shown in the accompanying drawing.Same or similar for ease of reference example whenever possible, just adopts identical label to represent identical parts in institute's drawings attached, and ignores its additional description.
With reference to Fig. 1, refrigeration system of the present invention comprises compressor 1, condenser 2, valve unit 3, two 11,21 and two evaporimeters 12,22 of expansion cell.
The cooling tube that links to each other with the cold-producing medium outflow side of condenser 2 is divided into two-way.Valve unit 3 is installed in the branch point place of cooling tube, just can by adjusting the valve openings ratio, control the refrigerant amount that flows into two arms under the control of control module (not shown).
Each arm of drawing from valve unit 3 is communicated to F-expansion cell 11 that is arranged in first Room 10 and the R-expansion cell 21 that is arranged in second Room 20 respectively.
In first Room 10, F-evaporimeter 12 is communicated to F-expansion cell 11, and F-fan 12a is installed on the position that faces F-evaporimeter 12.
In second Room 20, R-evaporimeter 22 is communicated to R-expansion cell 21, and R-fan 22a is installed on the position that faces R-evaporimeter 22.
Temperature sensor 13,23 is installed in first and second Room 10,20, so just can measure the temperature of first and second Room 10,20, and they all are connected electrically to control module, transmits metrical information to control module.
The cooling tube that is positioned at the cold-producing medium outflow side of F-evaporimeter 12 and R-evaporimeter 22 all is communicated to compressor.
The method that provides according to each embodiment can be controlled the operation of above-mentioned refrigeration system, and details are as follows.
First embodiment
With reference to Fig. 2, the progress control method of first embodiment of the invention comprises: step (S-00) is that first Room 10 is provided with a plurality of reference temperatures respectively, is that second Room is provided with a plurality of reference temperatures; Step (S-10) is measured the temperature of first and second Room 10 and 20; Step (S-20), relatively the measurement temperature of first Room 10 and second Room 20; And step (S-30), on the basis of first Room 10 and second Room, 20 temperature comparative results, adjust the refrigerant amount that flows into F-evaporimeter 12 and R-evaporimeter 22.
Herein, step (S-10) is carried out by temperature sensor 13,23 respectively, and the temperature that measures is transferred to control module.Step (S-20) is carried out by control module.Reference temperature comprises ceiling temperature and lower limit temperature.At this moment, the ceiling temperature of first Room 10 and second Room 20 and lower limit temperature may be set at mutually the same, but on the whole, because first Room 10 is commonly used for refrigerating chamber, and second Room 20 is commonly used for refrigerating chamber, and therefore the temperature requirement of best first Room and second Room is set to differ from one another.
In step (S-30), the refrigerant amount that flows into F-evaporimeter and R-evaporimeter is measured in first and second Room on the basis of temperature comparative result, realizes by adjusting valve 3 ground aperture efficiencies.Aperture efficiency is described in detail with reference to Fig. 3.
With reference to Fig. 3, if the temperature of first Room 10 and second Room 20 has surpassed ceiling temperature, if and the temperature of first Room 10 and second Room 20 zone more than lower limit temperature is mutually the same, so for first Room 10 and second Room 20, the aperture efficiency of valve unit 3 will be set to 50%: 50%, and the refrigerant amount that flows into F-evaporimeter 12 and R-evaporimeter 22 like this is with mutually the same.
And for example the temperature of fruit first Room 10 and second Room 20 is all more than lower limit temperature, and the temperature of arbitrary chamber is higher than another chamber among both, and the vaporizer side aperture efficiency of the higher chamber of the 3 pairs of temperature in by-pass valve control unit is bigger so.In other words, as shown in Figure 3, the zone (b1) that is higher than lower limit temperature if first Room 10 belongs to that temperature is lower than ceiling temperature, second Room 20 belongs to the zone (a2) that temperature is higher than ceiling temperature, and then will to be adjusted into chambers 20 to the first, second Room 10 openings bigger for valve unit 3.If the temperature of first Room 10 and second Room 20 all temperature be lower than ceiling temperature and be higher than lower limit temperature the zone (b1, b2) in, then valve unit 3 will be adjusted into the higher chamber aperture efficiency of temperature bigger.In above-mentioned all situations, (a1, a2), then valve unit 3 will be adjusted into the higher chamber aperture efficiency of temperature bigger if first Room 10 and second Room 20 all belong to the zone that temperature all is higher than ceiling temperature.Yet as Fig. 3 and afore-mentioned, for first Room and second Room, the aperture efficiency of valve unit 3 will preferably be adjusted into mutually the same.
In addition, if arbitrary temperature is below lower limit temperature in first Room 10 and second Room 20, valve unit 3 will be adjusted into ownership cryogen and all flow to the higher chamber of temperature.In other words, as shown in Figure 3, if first Room 10 belongs to the zone (c1) that temperature is lower than lower limit temperature, (b1, a1), then valve unit 3 will be adjusted into the R-evaporimeter 22 that ownership cryogen all flows to chamber 20 and second Room 20 belongs to the zone that temperature is higher than lower limit temperature.On the contrary, if first Room 10 belong to the zone that temperature is higher than lower limit temperature (b1, a1), and second Room 20 belongs to the zone (c1) that temperature is lower than lower limit temperature, then valve unit 3 will be adjusted into the F-evaporimeter 12 that ownership cryogen all flows to chamber 10.
If first Room 10 and second Room 20 all belong to the zone that temperature is lower than lower limit temperature (c1, c2), compressor is with out of service, cold-producing medium will can not flow into F-evaporimeter and R-evaporimeter.
Flow of refrigerant situation in the first embodiment of the invention simply is summarized as follows.
When refrigeration system brings into operation, compressor 1 operation, compressed refrigerant is converted into the high temperature high pressure liquid state with cold-producing medium, and the cold-producing medium after will compressing then is transported in the condenser 2.When the cold-producing medium of gaseous state carries out heat exchange at the air that blows with condenser fan 2a, be liquefied.Cold-producing medium after the liquefaction is by refrigerant pipe flow valve unit 3.
Simultaneously, the temperature sensor 13,23 of first Room 10 and second Room 20 is measured the temperature of first and second Room 10,20, and the temperature that records is transferred to control module.The temperature that control module relatively records is according to the aperture efficiency of the described method adjustment of Fig. 3 valve unit 3.
After the opening of the flow velocity of cold-producing medium by valve unit adjusted, in F-expansion cell 11 and R-expansion cell 21, expand, and in F-evaporimeter 12 and R-evaporimeter 22 with the indoor unit heat-shift of each chamber.When being blown into cold wind by F-fan 12a and R-fan 22a, each chamber obtains cooling.
When first Room 10 and second Room 20 were in temperature and are lower than the environment of lower limit temperature, compressor 1 was out of service.After after a while, if the temperature of at least one chamber in chamber 10 and the chamber 20 raise to surpass lower limit temperature, then compressor 1 starts, and repeats above-mentioned steps, with the temperature maintenance of first Room 10 and second Room 20 in certain temperature range.
Aforementioned first embodiment of the invention has reached the effect that reduces each storeroom temperature difference and each storeroom temperature of stable maintenance.Therefore, be applied in the intrinsic local flavor that refrigerator among first embodiment has kept being stored at food in each storeroom over a long time, the reliability of stored food has obtained further raising.
Simultaneously, the major technique thought of first embodiment of the invention is the amount that the cold-producing medium of each evaporimeter is distributed in control.Among the correction embodiment below, first embodiment is with accomplished.
The correction embodiment of first embodiment
With reference to Fig. 4, the progress control method of the correction embodiment of first embodiment of the invention may further comprise the steps: step (S-05) is that first and second Room 10,20 are provided with the humidity province; Step (S-10) is measured the temperature of first and second Room 10,20; Step (S-20), relatively the measurement temperature of first and second Room 10,20; Step (S-30) based on the temperature comparative result of first and second Room 10,20, is adjusted the refrigerant amount that flows into F-evaporimeter and R-evaporimeter.
Herein, step (S-10) is carried out by temperature sensor 13,23 respectively, and the temperature that measures is transferred to control module.Step (S-20) is carried out by control module.The humidity province comprises: the humidity province An that surpasses ceiling temperature; Be lower than ceiling temperature but be higher than the humidity province Bn of design temperature; Be lower than design temperature but surpass the humidity province Cn of lower limit temperature; Be lower than the humidity province Dn of lower limit temperature.Herein, for to give the Any Digit of humidity province, purpose is distinguished each chamber to subscript " n " exactly.Simultaneously, each humidity province of first Room 10 and second Room 20 can be set to identical, and on the whole, because first Room 10 is commonly used for refrigerating chamber, and second Room 20 is commonly used for refrigerating chamber, and therefore the temperature requirement of first Room and second Room is set to differ from one another.
Step (S-20) is by the temperature of each chamber and relatively carrying out of humidity province.On the basis of comparative result, step (S-30) adjustment flows into the refrigerant amount of F-evaporimeter 12 and R-evaporimeter 22.The aperture efficiency that adjustment process provides control module to adjust valve unit 3 is carried out.The details of aperture efficiency illustrates with reference to Fig. 5.
With reference to Fig. 5, if the humidity province of first Room 10 and second Room 20 is mutually the same, valve unit 3 will have impartial aperture efficiency, and for first Room 10 and second Room 20, the aperture efficiency of valve unit is preferably 50%: 50%.In other words, if first Room 10 and second Room 20 all belong to the An district, Bn district or Cn district, the aperture efficiency of valve unit 3 is impartial 50%: 50%, thus the refrigerant amount that flows into F-evaporimeter and R-evaporimeter is identical.Simultaneously, as shown in Figure 5, if the humidity province of first Room 10 and second Room 20 all belongs to the Dn district, compressor 1 is with out of service.
Equally, if having only a humidity province to belong to the Dn district in two Room 10 and 20, concerning chamber that belongs to this humidity province and the chamber that belongs to other humidity province, the aperture efficiency of valve unit is 0%: 100% so.In other words, 10 belong to the D1 district if only have family, ownership cryogen all will flow to the F-evaporimeter 12 of first Room 10 so, otherwise, 20 belonging to the D2 district if only have family, ownership cryogen all will flow to the R-evaporimeter 22 of second Room 20 so.
In addition, if the humidity province of the arbitrary chamber in first Room 10 and second Room 20 belongs to the An district, another chamber belongs to the Cn district, and so, concerning chamber that belongs to the An district and the chamber that belongs to valve unit 3Cn district, the aperture efficiency of valve unit will be 100%: 0%.In other words, as shown in Figure 5, if first Room 10 belongs to the A1 district, second Room belongs to the C2 district, and valve unit 3 will be adjusted into the F-evaporimeter 12 that ownership cryogen all will flow to first Room 10.On the contrary, if first Room 10 belongs to the C2 district, second Room 20 belongs to the A1 district, and valve unit 3 will be adjusted into the R-evaporimeter 22 that ownership cryogen all will flow to second Room 20.
In addition, if the humidity province of the arbitrary chamber in first Room 10 and second Room 20 belongs to the Bn district, and another chamber belongs to An district or Cn district, and valve unit 3 will be adjusted into the higher relatively chamber opening of temperature bigger.At this moment, aperture efficiency (the higher relatively chamber of the temperature side: the relatively low chamber of temperature side), but also can be adjusted to 70%: 30% or 60%: 40% that is preferably 80%: 20%.In addition, as shown in Figure 5, if first Room 10 belongs to the B1 district, second Room 20 belongs to the A2 district, if and first Room 10 belongs to the C1 district, second Room 20 belongs to the B2 district, so relative first Room 10 20, second Room, temperature is higher relatively, and the cold-producing medium that valve unit 3 will be adjusted into the R-evaporimeter 22 that flows to second Room 20 is more than the cold-producing medium of the F-evaporimeter 12 that flows to first Room 10.Certainly, second Room 20 belongs to the B2 district if first Room 10 belongs to the B1 district, if and first Room 10 belongs to the B1 district and second Room 20 belongs to the C2 district, relative second Room 20 10, first Room so, temperature is higher relatively, and the cold-producing medium that valve unit 3 will be adjusted into the F-evaporimeter 12 that flows to first Room 10 is more than the cold-producing medium of the R-evaporimeter 22 that flows to second Room 20.
In the correction embodiment of first embodiment of the invention, identical with first embodiment by the flow of refrigerant mechanism of preceding method control, the effect that reaches is also identical with first embodiment.Description about them has just been omitted.
Second embodiment
The progress control method of second embodiment of the invention may further comprise the steps: when the control of passing through valve unit 3, kind of refrigeration cycle switches to the R-circulation time from the F-circulation, is closing valve unit 3 operation compressors at the fixed time in the section (Δ t).Cold-producing medium passes through condenser 2 successively in the F-circulation of this place speech, flow through F-expansion cell 11 and F-evaporimeter 12, and cold-producing medium passes through condenser 2, flow through R-expansion cell 21 and R-evaporimeter 22 successively in the R-circulation.
Herein, progress control method also preferably includes by moving the F-fan and evaporates the cold-producing medium that is retained in the F-evaporimeter 12 with 12a, is closing the step that valve unit 3 moves compressors in the section (Δ t) at the fixed time simultaneously.And this progress control method comprises that also rotation condenser fan 2a with cooler condenser 2, is closing the step of valve unit 3 operation compressors 1 simultaneously.
According to said method, in the refrigeration system progress control method of second embodiment, flow of refrigerant mechanism illustrates referring to figs. 1 through 6.
Along with refrigeration system brings into operation, compressor 1 is with cold-producing medium boil down to HTHP gaseous state, and the cold-producing medium after will compressing then is transported in the condenser 2, and the wind that gaseous refrigerant and condenser fan 2a blow carries out being liquefied after the heat exchange.
Cold-producing medium after the liquefaction is by refrigerant pipe flow valves gate cell 3.By control module, the flow direction of valve unit 3 decision cold-producing mediums.At this moment, if switch by valve unit 3, cold-producing medium flows into F-expansion cell 11 and F-evaporimeter 12, then carries out the F-circulation.In F-circulation, cold-producing medium in F-expansion cell 11, expand and in evaporation process heat-shift, absorbing environmental heat.Then, F-fan 12a is blown into cold air, and first Room obtains cooling.The cold-producing medium that flows into F-evaporimeter 12 flows into compressor 1 once more, repeats above-mentioned steps.
Simultaneously, as shown in Figure 6, when carrying out the F-circulation time, 3 pairs of F-evaporimeter 12 openings of valve unit, compressor 1 and F-fan 12 and condenser fan 2a operation.Condenser fan 2a cooler condenser 2 and compressor 1.
With last similar, after the F-circulation was finished, compressor 1 was in valve unit 3 complete closing state operations.Afterwards, cold-producing medium is along with closing of valve unit 3 stops to flow, and the ownership cryogen that is trapped in F-expansion cell 11 and the F-evaporimeter 12 flows in compressor 1 and the condenser 2 under the effect of pressure reduction.This moment, as shown in Figure 6, when evaporating the cold-producing medium that is trapped in the F-evaporimeter by the operation of F-fan 12a, cold air is blown into first Room 10 continuously.After this, even after the F-circulation stops, the also available cooling air that is trapped in the F-evaporimeter 12 continues cooling first Room 10, and can easily the cold-producing medium after the evaporation be extracted into compressor 1.
After moving predetermined amount of time (Δ t) according to the method described above, valve unit 3 will switch to R-evaporimeter 22 to carry out the R-circulation.Because cold-producing medium is mobile and identical in the F-circulation in the R-circulation, omits the description to it.But, when carrying out the R-circulation time, valve unit 3 is to R-evaporimeter 22 openings, and compressor 1 moves, R-fan 22a and condenser fan 2a running.
In the second embodiment of the present invention, after being trapped in cold-producing medium in the F-evaporimeter 12 and extracting out by said method and be saved in compressor 1 and the condenser 2, carry out the R-circulation.At last, when carrying out the R-circulation time, ownership cryogen can both obtain utilizing, and cold-producing medium lacks problem and therefore thoroughly solved.
In addition, in case the R-loop start just may more promptly be supplied the cold-producing medium of extracting out from F-evaporimeter 12.R-circulation as a result enters normal condition with shorter time, thereby may further improve the refrigeration performance of refrigeration system.
Simultaneously, R-circulation is finished, compressor 1 out of service after, the operation of predetermined amount of time can make the identical effect of acquisition when the F-loop start.Therefore, by the correction embodiment of second embodiment, the present invention carries out the cold-producing medium draw out operation after all circulations are all finished.Description referring to figs. 1 to 7.
The correction embodiment of second embodiment
Progress control method with reference to the correction embodiment of figure 4, the second embodiment may further comprise the steps: when arbitrary circulation is finished in F-circulation or the R-circulation, closing valve unit 3 operation compressors 1 at the fixed time in the section (Δ t).Cold-producing medium passes through condenser 2 in the F-circulation of this place speech, flow through successively F-expansion cell 11 and F-evaporimeter 12, and cold-producing medium passes through condenser 2, flow through successively R-expansion cell 21 and R-evaporimeter 22 in the R-circulation.
Herein, this method also preferably includes when valve unit 3 is closing operation compressor 1, corresponding one step among running F-fan 12a and the R-fan 22a.And this method also preferably includes when valve unit 3 is closing operation compressor 1, with the running and operating condenser fan 2a of compressor 1.
Because the concrete operation of the second above-mentioned embodiment correction embodiment is consistent with second embodiment, and its description has just been omitted.But, in the correction embodiment of second embodiment,, still to close valve unit 3 operation compressors 1 even after F-circulation or R-circulation are finished.And when compressor is out of service when restarting then, liquid refrigerant does not flow into compressor 1, thereby the reliability of compressor is guaranteed.
Second above-mentioned embodiment and correction embodiment thereof have following advantage.
At first, finish arbitrary circulation of refrigeration system after, the cold-producing medium that is trapped in the evaporimeter of respective cycle is drawn in compressor and the condenser.Like this, even carry out another circulation, can not occur cold-producing medium yet and lack phenomenon.
After the second, one circulation finished, the fan running of corresponding evaporator continued to food storage chamber supply cold wind, like this thermal efficiency raising and quickened the extraction process of cold-producing medium.
After the three, one circulation finished, can avoid cold-producing medium to be trapped in the evaporimeter, can't flow into liquid refrigerant reruning in the process of compressor like this, avoid liquid compression to cause compression failure compressor.Therefore, the reliability of compressor is guaranteed.
The 4th, in the refrigeration system of same capability, can use less cold-producing medium.
The 3rd embodiment
The progress control method of the 3rd embodiment comprises the following steps: to switch to R-circulation time by by-pass valve control unit 3 from the F-circulation when refrigeration system, closing valve unit 3 operation compressors 1 at the fixed time in the section (Δ t), cold-producing medium is by condenser 2 in the F-circulation of this place speech, flow through successively F-expansion cell 11 and F-evaporimeter 12, and cold-producing medium passes through condenser 2, flow through successively R-expansion cell 21 and R-evaporimeter 22 in the R-circulation; After this control method comprised that also compressor 1 is out of service, F-fan 12a and R-fan 22a intermittently turned round respectively.
In the 3rd embodiment, because it is identical with second embodiment to extract the method that is trapped in cold-producing medium in the evaporimeter, to its this omission that is described in.Next step describes after compressor 1 operation stops the step of intermittent running F-fan 12a and R-fan 22a with reference to Fig. 1 to 8.
Fig. 8 illustrates a kind of refrigeration cycle of two evaporimeter refrigeration systems, and wherein the F-circulation is finished, the then operation R-of this system circulation, and compressor 1 is out of service in the continuous time period, so the R-circulation is not carried out.Yet clearly, for one of ordinary skill in the art, the present invention is not limited only to kind of refrigeration cycle shown in Figure 8, and kind of refrigeration cycle shown in Figure 8 is an example.
At first, when compressor 1 operation and execution F-circulation time, F-fan 12a continuous running, evaporation flows into the cold-producing medium in the F-evaporimeter 12, cools off second Room 20 simultaneously.
Simultaneously, kind of refrigeration cycle is carried out the R-circulation after switching to the R-circulation from the F-circulation, and the cold-producing medium that R-fan 22a continuous running evaporation flows into R-evaporimeter 22a cools off second Room 20 simultaneously.
If finished the R-circulation, compressor 1 will be out of service.Like this, after compressor 1 is out of service, intermittent running F-fan 12a and R-fan 22a in the continuous time section, the cooling air that blows to each chamber just can cool off each chamber.
Above-mentioned operation method can stop the back in kind of refrigeration cycle and utilize the cooling air that is trapped in each evaporimeter to cool off each chamber.In other words, if compressor 1 is out of service, does not just have the cooling air and blow to evaporimeter 12,22.Yet, because the environment temperature of evaporimeter 12,22 is lower than each chamber, blow to each chamber if will cool off air with fan, still may improve refrigeration performance, reduce the temperature difference of each chamber, therefore just improved the reliability of food preservation.
And when cold-producing medium did not flow into each evaporimeter, by fans in operation, the cold-producing medium that is trapped in the evaporimeter just can obtain evaporation fully, has therefore prevented when compressor 1 restarts, and liquid refrigerant flows into compressor 1.
Simultaneously, this operation method of the 3rd embodiment also preferably includes following steps: when carrying out one of F-circulation or R-circulation, intermittently running belongs to the fan of the evaporimeter of another circulation out of service.In other words, as shown in Figure 8, when carrying out the F-circulation, during compressor 1 (OFF) out of service, R-fan 22a will intermittently turn round.Equally, when carrying out the R-circulation, when compressor 1 was out of service, the F-fan will intermittently turn round.Refrigeration performance improves greatly as a result.
In addition, this method of the 3rd embodiment also preferably includes following steps: when carrying out and finishing one of F-circulation or R-circulation, and the evaporator fan of the corresponding kind of refrigeration cycle of time-delay running.In other words, as shown in Figure 8, after the F-circulation is finished, a fan 12a time-delay running preset time section (t1), with cold air row to first Room 10, and when R-circulate finish after, a fan 22a time-delay running preset time section (t2) is to arrange cold air to second Room 20.So just be blown into the cooling air to each chamber after finishing in each circulation, improved refrigerating efficiency, the cold air level of refrigeration the when level of refrigeration of the cold air around the corresponding evaporator is with the execution kind of refrigeration cycle at this moment is identical.
And this operation method of the 3rd embodiment also preferably includes following steps: when carrying out and finishing one of F-circulation or R-circulation, at first the intermittent then running of time-delay running belongs to the evaporator fan of corresponding kind of refrigeration cycle.In other words, as shown in Figure 8, after the F-circulation is finished, a F-fan 12a time-delay running preset time section (t1), intermittent then running, after the R-circulation is finished, a R-fan 22a time-delay running preset time section (t2), intermittent then running.
When F-fan 12a and R-fan 22a did as above-mentioned intermittence turns round, the duration of runs of F-fan 12a and R-fan and the intermittent time ratio of dwell time were preferably 4: 6.In other words, the intermittent running in 10 minutes time period as F fan 12a and R-fan 22a, each fan preferably turned round 4 minutes, stopped 6 minutes.Yet according to refrigerant system capacity or product design target, above-mentioned ratio may change.Simultaneously, the intermittent running of F-fan 12a and R-fan 22a ground reason is to consider the life-span and the power consumption of the motor of fans in operation.
Simultaneously, in the 3rd embodiment, the method for intermittent each fan of running can independently be applicable to the refrigeration system of progress control method among second embodiment when compressor is out of service.Below, referring to figs. 1 through 9, the present invention discloses the 4th embodiment.
The 4th embodiment
The refrigeration system progress control method of fourth embodiment of the invention may further comprise the steps: after refrigeration system is optionally finished F-circulation or R-circulation, and intermittent running F-fan 12a and R-fan 22a, compressor 1 is out of service.
And the 4th embodiment also preferably includes following steps: when carrying out one of F-circulation or R-circulation, intermittent running belongs to the evaporator fan of another circulation out of service.
In addition, the 4th embodiment also preferably includes following steps: when carrying out and finishing one of F-circulation or R-circulation, (t3, t4) interior time-delay running belongs to the evaporator fan of corresponding kind of refrigeration cycle to section at the fixed time.
And the 4th embodiment also preferably includes following steps: when carrying out and finishing one of F-circulation or R-circulation, and at first time-delay running, intermittent then running belongs to the evaporator fan of corresponding kind of refrigeration cycle.
When the intermittent running of F-fan 12a and R-fan 22a, they separately the duration of runs and the intermittent time ratio of dwell time be preferably 4: 6.
Owing to the detailed description of the 4th embodiment is stated in the 3rd embodiment, in this omission.As shown in Figure 9, the 4th embodiment can be applicable to that selective operation F-circulation and R-circulate and in the ownership cooling system of the operation order not considering to circulate.
The 4th embodiment has following advantage.
The first, after compressor was out of service, by intermittence each fan that turns round, the cooling air that is trapped in each evaporimeter blowed to each chamber, thereby the internal difference in temperature of each chamber reduces, and has improved the reliability of each food storage chamber.
The second, because the cooling air that is trapped in each evaporimeter can obtain utilizing, therefore can improve cooling effectiveness, reduce the temperature recovery speed of each chamber.Like this, compressor operating time just obviously shortens.
The 3rd, after cold-producing medium stopped to flow, each fan all evaporated the cold-producing medium that is trapped in each evaporimeter.Like this, when compressor starts again, just can prevent that liquid refrigerant from flowing into compressor, the reliability of compressor is improved.
Clearly, concerning one of ordinary skill in the art, the present invention can do different the correction and variation.For example, can on the refrigerant pipe of outdoor and indoor unit, Noise Suppression Device be installed.Therefore, if in claim and the scope that is equal to, will be covered by the present invention modifications and variations of the present invention so.
Claims (41)
1. progress control method that the refrigeration system of two evaporimeters is arranged, form by following steps:
(c) measure the temperature of each storeroom;
(d) the measurement temperature of each storeroom of comparison;
(e), adjust the refrigerant amount of the evaporimeter that flows into each storeroom according to the temperature comparative result of each storeroom.
2. in the method as claimed in claim 1, it is characterized in that step (c) is finished by the temperature sensor that is installed in each storeroom.
3. in the method as claimed in claim 1, also be included in execution in step (c) and be the step that a plurality of reference temperatures are set (a) of each food storage chamber before.
4. in the method as claimed in claim 3, it is characterized in that reference temperature comprises ceiling temperature and lower limit temperature.
5. in the method as claimed in claim 4, it is characterized in that, be installed in the aperture efficiency of valve unit at the branch point place of the refrigerant pipe that is communicated with each storeroom evaporimeter by adjustment, come the refrigerant amount of inflow evaporator in the set-up procedure (e).
6. in the method as claimed in claim 5, it is characterized in that if each storeroom temperature is higher than ceiling temperature, then the aperture efficiency of valve unit is 50%: 50%.
7. in the method as claimed in claim 5, it is characterized in that if having uniform temp in each storeroom temperature certain humidity province more than lower limit temperature, then the aperture efficiency of valve unit is 50%: 50%.
8. in the method as claimed in claim 5, it is characterized in that, if the temperature of arbitrary storeroom is higher than another storeroom temperature that is positioned at certain humidity province on the lower limit temperature, the evaporimeter that valve unit will be controlled to the higher relatively storeroom of relative another storeroom temperature has bigger opening.
9. in the method as claimed in claim 5, it is characterized in that if arbitrary storeroom temperature is lower than lower limit temperature in each storeroom, valve unit will be controlled to be the evaporimeter that ownership cryogen all flows to the higher storeroom of relative another storeroom temperature.
10. in the method as claimed in claim 5, it is characterized in that if each storeroom temperature all is lower than lower limit temperature, compressor is with out of service.
11. in the method as claimed in claim 1, also comprise step (b), before promptly in execution in step (c), for each storeroom is provided with the humidity province.
12. in the method as claim 11, it is characterized in that the humidity province comprises: the An district that is higher than ceiling temperature; Be lower than ceiling temperature but be higher than the Bn district of design temperature; Be higher than lower limit temperature but be lower than the Cn district of design temperature; And the Dn district that is lower than lower limit temperature.
13. in the method as claim 12, it is characterized in that step (d) is by relatively the measurement temperature of each storeroom and the mode of each humidity province are carried out.
14. in the method as claim 13, it is characterized in that, be installed in the aperture efficiency of valve unit at the branch point place of the refrigerant pipe that is communicated with each storeroom evaporimeter by control, control the refrigerant amount of inflow evaporator in the step (e).
15. in claim 14 method, it is characterized in that if the humidity province of each chamber is mutually the same, then the aperture efficiency of valve unit is also with identical.
16. in the method as claim 15, it is characterized in that the aperture efficiency of valve unit is 50%: 50%.
17. in the method as claim 15, it is characterized in that if all humidity provinces all belong to the Dn district, then compressor is with out of service.
18. in the method as claim 14, it is characterized in that if having only a temperature to belong to the Dn district in each chamber, then concerning at the storeroom of Dn humidity province with the storeroom of another humidity province, the aperture efficiency of valve is 0%: 100%.
19. in the method as claim 14, it is characterized in that if arbitrary temperature belongs to the An district in each chamber, another storeroom temperature belongs to the Cn district, then concerning storeroom that belongs to the An district and the storeroom that belongs to the Cn district, the aperture efficiency of valve is 100%: 0%.
20. in the method as claim 14, it is characterized in that if the arbitrary temperature in each chamber belongs to the Bn district, another room temperature belongs to the Cn district, valve unit will be controlled to the chamber in the higher humidity province scope of relative temperature bigger opening.
21. in the method as claim 10, it is characterized in that concerning belonging to the higher temperature humidity province and belonging to the storeroom of lower temperature humidity province, the aperture efficiency of valve unit is 80%: 20%.
22. progress control method that the refrigeration system of two evaporimeters is arranged, this method comprises step (f): when refrigeration system switches to the R-circulation time by the by-pass valve control unit from the F-circulation, closing valve unit operation compressor at the fixed time in the section (Δ t), in the F-circulation of this place speech, by the cold-producing medium of F-condenser flow through successively F-expansion cell and F-evaporimeter, and in the R-circulation, by the cold-producing medium of R-condenser flow through successively R-expansion cell and R-evaporimeter.
23. in the method as claim 22, also comprise step: when carrying out (f) step, running F-fan cools off the F-expansion cell.
24. in the method as claim 22, also comprise step: when execution in step (f), the running condenser fan.
25. progress control method that the refrigeration system of two evaporimeters is arranged, this controlling party rule comprises step (g): when finishing F-circulation or R-circulation time, closing valve unit operation compressor at the fixed time in the section (Δ t), in the F-circulation of this place speech, by the cold-producing medium of F-condenser flow through successively F-expansion cell and F-evaporimeter, and in the R-circulation, by the cold-producing medium of R-condenser flow through successively R-expansion cell and R-evaporimeter.
26. in the method as claim 25, also comprise step: when execution in step (g), the running respective fans.
27. in the method as claim 25, also comprise step: when execution in step (g), the running condenser fan.
28. in the method as claim 25, also comprise step: after compressor was out of service, the F-fan that intermittently turns round respectively was with cooling F-expansion cell, and running R-fan is with cooling R-expansion cell.
29. in the method as claim 28, also comprise step: when carrying out one of F-circulation or R-circulation, intermittently running belongs to the fan 20 of another evaporimeter that has stopped kind of refrigeration cycle.
30. as the method for claim 28, comprise that also step: F-circulation or R-circulation is carried out and finished after, the time-delay running belongs to the evaporator fan of corresponding kind of refrigeration cycle in the section at the fixed time.
31. in the method as claim 28, comprise that also step: F-circulation or R circulation is finished after, the evaporator fan of the corresponding kind of refrigeration cycle of time-delay running in the section at the fixed time, intermittent then this fan of running.
32. in the method as claim 28, it is characterized in that the duration of runs of F-fan and R-fan and the time interval ratio of dwell time are 4: 6.
33. in the method as claim 29, it is characterized in that the duration of runs of F-fan and R-fan and the time interval ratio of dwell time are 4: 6.
34. in the method as claim 31, it is characterized in that the duration of runs of F-fan and R-fan and the time interval ratio of dwell time are 4: 6.
35. progress control method that moves F-circulation or R-circulation selectively, in the F-circulation of this place speech by the cold-producing medium of F-condenser flow through successively F-expansion cell and F-evaporimeter, and in the R-circulation by the cold-producing medium of R-condenser flow through successively R-expansion cell and R-evaporimeter, this method may further comprise the steps: after compressor is out of service, also intermittently move each F-fan and R-fan with cooling F-expansion cell and R-expansion cell.
36. in the method in the claim 35, also comprise step: when operation F-circulation or R-circulation time, intermittent running belongs to the fan that another has stopped the evaporimeter of kind of refrigeration cycle.
37. in the method in the claim 35, comprise that also step: F-circulation or R-circulation is carried out and finished after, the evaporator fan of the corresponding kind of refrigeration cycle of time-delay running in the section at the fixed time.
38. in the method in the claim 35, comprise that also step: F-circulation or R circulation is carried out and finished after, the time-delay running belongs to the evaporator fan of corresponding kind of refrigeration cycle, intermittent then this fan of running in the section at the fixed time.
39. in the method in the claim 35, it is characterized in that the duration of runs of F-fan and R-fan and the time interval ratio of dwell time are 4: 6.
40. in the method in the claim 36, it is characterized in that the duration of runs of F-fan and R-fan and the time interval ratio of dwell time are 4: 6.
41. in the method in the claim 38, it is characterized in that the duration of runs of F-fan and R-fan and the time interval ratio of dwell time are 4: 6.
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2002-0038701A KR100480706B1 (en) | 2002-07-04 | 2002-07-04 | method for controling refrigerator with two evaporators |
| KR38701/2002 | 2002-07-04 | ||
| KR38703/2002 | 2002-07-04 | ||
| KR10-2002-0038704A KR100474910B1 (en) | 2002-07-04 | 2002-07-04 | method for controling cooling system with two evaporators |
| KR1020020038703A KR20040003876A (en) | 2002-07-04 | 2002-07-04 | method for controling cooling system with two evaporators |
| KR38704/2002 | 2002-07-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1467459A true CN1467459A (en) | 2004-01-14 |
Family
ID=27350566
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA021583838A Pending CN1467459A (en) | 2002-07-04 | 2002-12-31 | Controlling the operation of cooling systems provided with two evaporators |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP3816872B2 (en) |
| CN (1) | CN1467459A (en) |
| DE (1) | DE10260350B4 (en) |
| GB (1) | GB2390419B (en) |
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| CN101617185B (en) * | 2007-03-12 | 2011-06-15 | 星崎电机株式会社 | Cooling storage building and method of operating the same |
| CN102102933A (en) * | 2009-12-22 | 2011-06-22 | 三星电子株式会社 | Refrigerator and method of controlling operation thereof |
| CN101076696B (en) * | 2004-12-28 | 2011-07-20 | 大金工业株式会社 | Refrigerating apparatus |
| CN101918775B (en) * | 2007-11-05 | 2012-11-21 | Lg电子株式会社 | Control method of refrigerator |
| CN101627269B (en) * | 2007-03-13 | 2012-11-28 | 星崎电机株式会社 | Cooling storage chamber and method for operating the same |
| CN103097833A (en) * | 2010-04-27 | 2013-05-08 | 丹福斯有限公司 | A method for operating a vapour compression system |
| CN104374157A (en) * | 2013-08-13 | 2015-02-25 | 东部大宇电子株式会社 | Method for controlling refrigerator |
| US9374931B2 (en) | 2012-08-01 | 2016-06-21 | Asus Global Pte. Ltd. | Graphic card with multiple fans and controlling method thereof |
| CN105972915A (en) * | 2016-05-25 | 2016-09-28 | 合肥华凌股份有限公司 | Control method and control device for refrigeration system, and refrigerator |
| CN107084577A (en) * | 2017-06-27 | 2017-08-22 | 海信容声(广东)冰箱有限公司 | The control method and control device and refrigerator of a kind of dual system refrigerator |
| CN109883109A (en) * | 2019-02-26 | 2019-06-14 | 青岛海尔特种电冰柜有限公司 | Multi-cycle refrigerator |
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| DE102006015989A1 (en) * | 2006-04-05 | 2007-10-11 | BSH Bosch und Siemens Hausgeräte GmbH | Method for operating a refrigeration device with parallel-connected evaporators and refrigeration device therefor |
| KR100806314B1 (en) | 2007-03-30 | 2008-02-27 | 엘지전자 주식회사 | Method for controlling of refrigerator |
| KR101275184B1 (en) | 2007-05-25 | 2013-06-18 | 엘지전자 주식회사 | Control method of refrigerating system |
| DE102010018543A1 (en) * | 2010-03-01 | 2011-09-01 | Liebherr-Hausgeräte Ochsenhausen GmbH | Fridge and / or freezer |
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| KR102518816B1 (en) | 2016-03-24 | 2023-04-06 | 엘지전자 주식회사 | Refrigerator and Controlling method for the same |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3786648A (en) * | 1973-03-05 | 1974-01-22 | Gen Electric | Cooling system with multiple evaporators |
| DE2717050C3 (en) * | 1977-04-18 | 1979-12-06 | Danfoss A/S, Nordborg (Daenemark) | Compressor refrigeration systems with two compartments of different temperatures |
| GB2083928B (en) * | 1980-09-04 | 1985-01-16 | Gen Electric | Apparatus and method of controlling temperature of a evaporator refrigeration system |
| DE3043791A1 (en) * | 1980-11-20 | 1982-06-03 | Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart | COOLING UNIT, PARTICULARLY COMBINED REFRIGERATOR AND FREEZER |
| IT1144365B (en) * | 1981-05-15 | 1986-10-29 | Indesit | CONTROL SYSTEM TO IMPROVE THE PERFORMANCE OF APPLIANCES FOR THE PRODUCTION OF COLD OR HEAT |
| US5918474A (en) * | 1996-07-30 | 1999-07-06 | Whirlpool Corporation | Fan motor on/off control system for a refrigeration appliance |
| DE19647642A1 (en) * | 1996-11-18 | 1998-05-20 | Bsh Bosch Siemens Hausgeraete | Method for operating a cooling device |
| JP3462156B2 (en) * | 1999-11-30 | 2003-11-05 | 株式会社東芝 | refrigerator |
| KR100404984B1 (en) * | 2000-08-24 | 2003-11-10 | 가부시끼가이샤 도시바 | Refrigerator and controlling method therefor |
| JP3870048B2 (en) * | 2001-03-26 | 2007-01-17 | 三星電子株式会社 | Multi-room refrigerator and control method thereof |
-
2002
- 2002-12-20 DE DE10260350.2A patent/DE10260350B4/en not_active Expired - Lifetime
- 2002-12-27 JP JP2002379190A patent/JP3816872B2/en not_active Expired - Fee Related
- 2002-12-31 CN CNA021583838A patent/CN1467459A/en active Pending
- 2002-12-31 GB GB0230334A patent/GB2390419B/en not_active Expired - Fee Related
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| CN102102933A (en) * | 2009-12-22 | 2011-06-22 | 三星电子株式会社 | Refrigerator and method of controlling operation thereof |
| CN103097833A (en) * | 2010-04-27 | 2013-05-08 | 丹福斯有限公司 | A method for operating a vapour compression system |
| US9243819B2 (en) | 2010-04-27 | 2016-01-26 | Danfoss A/S | Method for operating a vapour compression system |
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| CN107084577B (en) * | 2017-06-27 | 2021-02-02 | 海信容声(广东)冰箱有限公司 | Control method and control device of dual-system refrigerator and refrigerator |
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| US11732948B2 (en) | 2018-08-02 | 2023-08-22 | Lg Electronics Inc. | Method for controlling refrigerator to alternately cool two storage compartments |
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| CN112665299B (en) * | 2020-12-11 | 2022-07-01 | 珠海格力电器股份有限公司 | Refrigeration control method and device of refrigerator, controller and refrigerator |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2390419A (en) | 2004-01-07 |
| JP2004037065A (en) | 2004-02-05 |
| DE10260350B4 (en) | 2015-11-26 |
| DE10260350A1 (en) | 2004-01-29 |
| GB2390419B (en) | 2006-03-01 |
| GB0230334D0 (en) | 2003-02-05 |
| JP3816872B2 (en) | 2006-08-30 |
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