CN102317724B - A control method of a refrigerator - Google Patents
A control method of a refrigerator Download PDFInfo
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- CN102317724B CN102317724B CN201080007546XA CN201080007546A CN102317724B CN 102317724 B CN102317724 B CN 102317724B CN 201080007546X A CN201080007546X A CN 201080007546XA CN 201080007546 A CN201080007546 A CN 201080007546A CN 102317724 B CN102317724 B CN 102317724B
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- temperature
- defrost operation
- compressor
- control method
- evaporimeter
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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
- F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
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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
- F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
- F25D21/002—Defroster control
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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
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
- F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
- F25D17/06—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
- F25D17/062—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation in household refrigerators
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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
- F25D2323/00—General constructional features not provided for in other groups of this subclass
- F25D2323/002—Details for cooling refrigerating machinery
- F25D2323/0023—Control of the air flow cooling refrigerating machinery
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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
- F25D2400/00—General features of, or devices for refrigerators, cold rooms, ice-boxes, or for cooling or freezing apparatus not covered by any other subclass
- F25D2400/02—Refrigerators including a heater
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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
- F25D2600/00—Control issues
- F25D2600/02—Timing
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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
- F25D2700/00—Means for sensing or measuring; Sensors therefor
- F25D2700/10—Sensors measuring the temperature of the evaporator
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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
- F25D2700/00—Means for sensing or measuring; Sensors therefor
- F25D2700/12—Sensors measuring the inside temperature
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Defrosting Systems (AREA)
Abstract
An embodiment according to the present invention is to provide a control method of a refrigerator that can operate a compressor before a start of a defrost operation and during a predetermined time to supply a high-temperature hot gas to an evaporator. With the control method of the refrigerator according to the embodiments of the refrigerator, the compressor is driven immediately before the defrost operation and the blower fan cooling the compressor stops, such that the high-temperature hot gas can be supplied to the evaporator, thereby increasing the defrost efficiency.
Description
Technical field
The present invention relates to a kind of control method of refrigerator.
Background technology
Usually, refrigerator be can be in the internal storage space that is hidden by chamber door the consumer electronics of low-temperature storage food.Refrigerator uses by carrying out the cold air that heat exchange produces with cold-producing medium along kind of refrigeration cycle circulation (circulate) and cools off this memory space, makes it be configured to stored food is stored with optimum state.
Refrigerator comprises the evaporimeter that produces cold air.Because moisture (moisture) frosting and icing may produce frost in evaporimeter.
When in evaporimeter, producing frost, hygienic issues may occur, and the reduction of cooling effectiveness causes power consumption to increase.In order to prevent the problems referred to above, refrigerator comprises with the Defrost heater that removes frost (hereinafter referred to as defrosting).
In the defrost operation step, the operation Defrost heater, and out of service such as the assembly of formation kind of refrigeration cycle such as compressor and blower fan.In the design temperature scope or before the temperature of refrigerator reaches design temperature, defrost operation can continue to carry out.
Simultaneously, consider opening and closing frequency, opening and closing accumulated time and the operation ratio etc. of compressor, can carry out defrost operation repeatedly.
The defrost operation of prior art is by carrying out with the method for Defrost heater heating high temperature refrigerant, perhaps by by transfer valve the high temperature refrigerant from compressor discharge being switched to vaporizer side and carrying out with the method for hot gas heating fumigators.Can adopt above-mentioned two kinds of methods as required simultaneously.
According to the method for prior art, during defrost operation, increase the temperature in the refrigerator, can make food impaired.
Summary of the invention
Technical problem
Will provide a kind of control method of refrigerator according to embodiments of the invention, this control method can be moved compressor before defrost operation begins, and at the fixed time to evaporimeter supplying high temperature hot gas.
In addition, the invention provides a kind of control method of refrigerator, during defrost operation, this control method can change the rotary speed of compressor according to the temperature of extraneous air.
Solution
According to one embodiment of present invention, provide a kind of control method of refrigerator, comprising: normal operation step, come repeated open/close by compressor, and carry out normal refrigerating operation; Operating procedure before the defrosting, opening the beginning signal and whether be transfused to and optionally carry out according to defrost operation, and opening before the beginning signal of input defrost operation, whether reach the opening that first design temperature is controlled the blower fan of cooling compressor according to the temperature of extraneous air; And defrost operation step, the input of opening the beginning signal by defrost operation is controlled, make and be bypassed to vaporizer side from the cold-producing medium of compressor discharge, and whether reach second design temperature and optionally carry out high temperature defrost operation or low temperature defrost operation according to external temperature, wherein, after finishing, the defrost operation step forwards normal operation step to.
According to another embodiment of the invention, provide a kind of control method of refrigerator, comprising: normal operation step produces cold air by the cold-producing medium along compressor, condenser, decompressor and evaporimeter circulation; Whether the defrost operation step according to the input of opening the beginning signal of defrost operation and periodically operation, and reaches the 3rd design temperature and optionally carries out the defrosting of evaporimeter according to the temperature of vaporizer side; And operating procedure before the defrosting, before the defrost operation step, carry out, and when before opening of input defrost operation begun signal, not passing through setting-up time, open the blower fan of cooling compressor, and when having passed through setting-up time, whether be higher than the opening/closing that first design temperature is controlled blower fan according to the temperature of extraneous air.
Beneficial effect
The control method of refrigerator of refrigerator embodiment according to the present invention just moved compressor before defrost operation, and the blower fan of cooling compressor is out of service, makes high temperature hot gas can be supplied to evaporimeter, thereby has been improved defrosting efficiency.
In addition, before defrost operation, can be supplied to refrigerator from compressor discharge and the cold-producing medium that is fed to evaporimeter, thereby prevent that the temperature in the refrigerator from increasing suddenly during defrost operation.
And then, owing to can change rotary speed according to the temperature of extraneous air during the defrost operation, thus even when the temperature of extraneous air is lower than design temperature, also can discharge high temperature hot gas.
Therefore, when the temperature of extraneous air was lower than design temperature, the frost that is deposited in the evaporimeter can be removed smoothly by the high temperature hot gas from compressor discharge, thereby can improve defrosting efficiency.
Description of drawings
Fig. 1 illustrates the circular chart of the configuration of the kind of refrigeration cycle of refrigerator according to an embodiment of the invention;
Fig. 2 illustrates the block diagram of the configuration of refrigerator according to an embodiment of the invention;
Fig. 3 illustrates the flow chart of control method of refrigerator according to an embodiment of the invention;
Fig. 4 is the flow chart that illustrates according to method of operating before the defrosting in the control method of refrigerator of the embodiment of the invention;
Fig. 5 is the flow chart that illustrates according to method of operating before the defrosting in the control method of refrigerator of the embodiment of the invention;
Fig. 6 is curve map, illustrates with reference to the control method of refrigerator according to the embodiment of the invention, and input voltage over time during the high temperature defrost operation; And
Fig. 7 is curve map, illustrates with reference to the control method of refrigerator according to the embodiment of the invention, and input voltage over time during the low temperature defrost operation.
The specific embodiment
Below with reference to accompanying drawing most preferred embodiment is elaborated, described accompanying drawing constitutes the part of specification, illustrates by graphic mode in the accompanying drawings and can implement concrete most preferred embodiment of the present invention.These embodiment are described fully particularly so that those of ordinary skills can implement the present invention, and should understand, under the situation that does not break away from the spirit or scope of the present invention, other embodiment can be utilized, and variation logical construction, machinery, electronics and chemical can be carried out.For fear of for making those of ordinary skills can implement unnecessary details the present invention, specification can omit the known customizing messages of those of ordinary skills.Therefore, following detailed does not have limited significance, and protection scope of the present invention is only defined by the appended claims.
Fig. 1 is the circular chart that illustrates according to the refrigerator loop configuration of the embodiment of the invention, and Fig. 2 is the block diagram that illustrates according to the configuration of the refrigerator of the embodiment of the invention.
See figures.1.and.2, in refrigerator 1 according to an embodiment of the invention, compressor 10, condenser 20, decompressor 30, evaporimeter 40 and the liquid refrigerant groove 50 that constitutes kind of refrigeration cycle connect in order so that cold-producing medium circulation, thereby can circulate by running refrigerating.
Refrigerator 1 also comprises the bypass pipe 60 of the refrigerant bypassing that discharges from compressor 10 to the entrance side of evaporimeter 40.
The blower fan 11 of cooling compressor 10 is arranged on a side of compressor 10.Blower fan 11 be configured to during the normal operating of refrigerator 1 when rotating together along with the operation of compressor 10 cooled compressed device 10.
Blower fan 11 is blown into condenser 20 sides to extraneous air, thereby can easily carry out heat exchange in condenser 20.
One side of evaporimeter 40 is provided with cooling fan 41, this cooling fan 41 by with evaporimeter 40 in cold-producing medium carry out the cold-producing medium that heat exchange produces and force to be blown into the refrigerator side.
One side of evaporimeter 40 is provided with Defrost heater 80, is used for also removing the frost that is deposited in evaporimeter 40 in the defrost operation heating of refrigerator 1.
Refrigerator 1 also is provided with second temperature sensor 92 of the temperature of first temperature sensor 91 of temperature of sensing evaporimeter 40 and sensing extraneous air.
First temperature sensor 91 can be arranged on a side of evaporimeter 40, and second temperature sensor 92 can be arranged on a side of unit room or the fuselage of refrigerator, is provided with compressor 10 and condenser 20 in this unit room or fuselage.
In addition, refrigerator 1 comprises: counter 90, to counting the running time of a plurality of assemblies of constituting refrigerator; And controller 100, from first and second temperature sensors 91,92 and counter 90 receive signals with the operation of control compressor 10, blower fan 11, cooling fan 41 and Defrost heater 80 etc.
Below with reference to accompanying drawing to being described in detail according to the control method of refrigerator embodiment of the invention, that have aforementioned arrangements.
Fig. 3 is the flow chart that illustrates according to the control method of refrigerator of the embodiment of the invention; Fig. 4 is the flow chart that illustrates according to method of operating before the defrosting in the control method of refrigerator of the embodiment of the invention; And Fig. 5 is the flow chart that illustrates according to method of operating before the defrosting in the control method of refrigerator of the embodiment of the invention.
With reference to Fig. 3 to Fig. 5, under the normal running environment of refrigerator 1, when operation during compressor 10, cold-producing medium circulation, and blower fan 11, cooling fan 41 etc. can be controlled.
Can control the rotary speed of compressor 10 according to input load.For this reason, compressor 10 can comprise frequency conversion type (inverter-type) compressor, and its revolution can change according to input voltage.
Can control the running time of compressor 10 according to input load.At length, after the temperature of refrigerator reaches predeterminated level compressor 10 has moved setting-up time or during the longer time after, compressor 10 moves after predetermined time period out of service again.Said process constantly repeats (S100).
During whole (general) normal operating, the moisture of extraneous air can be piled up on the surface of evaporimeter 40, therefore frost may occur.Can produce frost on the surface of evaporimeter 40 by the moisture that is stored in the food in the refrigerator.
By the continuous service of kind of refrigeration cycle, this surface temperature reduces, the feasible frozen and continuous increase of lip-deep frost that is deposited in evaporimeter 40.As a result, the heat exchange performance variation of evaporimeter 40, and the refrigeration performance variation of refrigerator.
Therefore, in order to prevent this situation, need defrost operation to remove to be frozen in the frost in the evaporimeter 40.
Defrost operation can increase the temperature of refrigerator, therefore can carry out defrost operation to keep memory property in predetermined period.
Can be in counter 90 time etc. be opened in the accumulation of opening frequency and chamber door of the Cumulative Elapsed Time of compressor 10, chamber door and counted, and can determine the opportunity (timing) of defrost operation based on the time of counting.
Start defrost operation by the beginning signal that opens from the defrost operation of controller 110 output, and according to the predetermined period of carrying out in the course of normal operation (S100), the opportunity that needs defrost operation can export defrost operation open the beginning signal.
During the hot gas execution defrost operation that utilizes compressor, the temperature (high temperature) in order to ensure the hot gas that is fed to evaporimeter 40 can stop the operation of the blower fan 11 of cooling compressor 10.
Simultaneously, in order to improve the efficient of defrost operation, can operation (S200) before the execution defrosting before carrying out defrost operation.
Operation comprises defrosting signal input determining step (S210) before the defrosting, normal operating the term of execution, this step is confirmed opening the beginning signal and whether being transfused to of defrost operation.
When defrost operation open the beginning signal when being transfused to, carry out defrost operation, and when defrost operation open that the beginning, signal was not transfused to the time, the effluxion when determining defrost operation whether from the execution defrost operation setting-up time T.For example, consider defrosting efficiency, this setting-up time T can be set to about 30 minutes.That is to say that this setting-up time T can be set to time point 30 minutes (S220) before that defrost operation begins to carry out.
In other words, when hypothesis is when carrying out defrost operation with cycle of 10 hours, determine the opening after the beginning signal is transfused to of defrost operation formerly, whether setting-up time reached through the time after about one and a half hours.
Simultaneously, in setting-up time determining step (S220), before opening of input defrost operation begun signal, when not passing through setting-up time T, blower fan 11 stayed open state at the run duration of compressor 10.
Blower fan 11 is carried out normal operating until its process setting-up time before opening of input defrost operation begun signal.In other words, because blower fan 11 does not reach defrost operation special time before, it needn't close (S230) in order to carry out defrost operation.
On the other hand, begin to have passed through setting-up time T before the signal opening of input defrost operation if in setting-up time determining step (S220), determine, then carry out design temperature determining step (S240), in this step, temperature and the first design temperature D1 of the extraneous air that will be detected by second temperature sensor 92 compare.
At this moment, the first design temperature D1 can be set to about 15 ℃.When the temperature of extraneous air is higher than about 15 ℃, even blower fan 11 is not out of service, also can guarantee the temperature of the hot gas that normal defrosting is required.
Therefore, when the temperature of the extraneous air that is detected by second temperature sensor 92 is higher than the first design temperature D1, run duration at compressor 10, blower fan 11 stays open state (S230), and carries out normal operating and reach until it and open the setting-up time T (S100) of beginning signal before being transfused at defrost operation.
On the other hand, when the temperature of the extraneous air that is detected by second temperature sensor 92 was lower than the first design temperature D1, compressor 10 is blower fan 11 (S250) out of service with the open mode operation.
In this case, do not carry out the pressure cooling of compressor 10, and be in higher state of temperature from the cold-producing medium of compressor 10 dischargings.Keep this running status in can be during setting-up time.
In other words, when the temperature of extraneous air was lower than the first design temperature D1, before the setting-up time T of defrost operation time started, when compressor 10 operations, the operation of blower fan 11 stopped.
In this case, can increase from the temperature of the cold-producing medium of compressor 10 discharging, and when defrost operation begins, can carry out more effective defrosting.
Before defrost operation, the operation by compressor 10 can be fed to refrigerator with cold air, thereby the temperature that can prevent refrigerator during defrost operation increases [operating procedure (S200) before the defrosting] suddenly.
Simultaneously, when beginning signal from opening of controller 100 input defrost operations, the beginning defrost operation.When the input defrost operation open the beginning during signal, temperature and the second design temperature D2 of the extraneous air that will be detected by second temperature sensor 92 compare.
When the detected temperatures of extraneous air is higher than the second design temperature D2, carries out the high temperature defrost operation, and when the detected temperatures of extraneous air is lower than the second design temperature D2, carry out the low temperature defrost operation.
At this moment, the second design temperature D2 as the reference value of distinguishing high temperature defrost operation and low temperature defrost operation can be set to about 3 ℃.
When the temperature of extraneous air was lower than 3 ℃, relative condition with higher with the temperature of extraneous air was compared, the inevitable variation of defrosting efficiency.Therefore, for the temperature according to extraneous air keeps suitable defrosting efficiency, divide the scheme of defrost operation at the second design temperature D2 place and carried out (S310).
At first, under high temperature defrost operation situation, wherein the temperature of extraneous air is higher than the second design temperature D2, compressor 10, blower fan 11 and cooling fan 41 (S311 and S312) out of service.
Determine by first temperature sensor 91 whether the temperature of evaporimeter 40 reaches the 3rd design temperature D3.
The 3rd design temperature D3 can be set to about 3 ℃.Determine when the temperature of evaporimeter 40 sides is approximately 3 ℃, to carry out defrosting.On the other hand, when the temperature of evaporimeter 40 sides is lower than about 3 ℃, continue to carry out defrost operation (S320).
At this, in defrost operation, can carry out the defrosting scheme of using Defrost heater 80 and using hot gas simultaneously.
At length, when the temperature of evaporimeter 40 sides is lower than the 3rd design temperature (in step S311 and S312, the operation of compressor 10, cooling fan 41 and blower fan 11 is closed, and the temperature of evaporimeter 40 sides is in the subzero state), open Defrost heater 80.
Because the temperature of extraneous air is in the state that is higher than the second design temperature D2, even compressor 10 with low cruise, also can be supplied to evaporimeter 40 sides for the cold-producing medium that defrosts.At this, can define " low speed " like this, to compare with the operation of compressor in step S343, the speed of formation is lower.
Be directed into evaporimeter 40 from the high temperature and high pressure cold-producing medium (hot gas) of compressor 10 dischargings by bypass pipe 60.Hot gas is filled in the evaporimeter 40, makes the surface of evaporimeter 40 to be heated and begins to remove the lip-deep frost that is frozen in evaporimeter 40.
Simultaneously, after transfer valve 70 was switched, compressor 10 can be in process operation after about 5 seconds.Owing to supplied the high temperature and high pressure cold-producing medium by compressor 10 outside the time that transfer valve 70 switches, so transfer valve 70 and whole system can be protected.
Defrost heater 80 can just move before switching refrigerant flow path by the operation of transfer valve 70 and afterwards.Particularly, carrying out the early stage of defrosting, evaporimeter 40 or the part of closing on evaporimeter 40 be by higher temperature heating, makes Defrost heater 80 operations, thereby can carry out defrosting quickly.
Simultaneously, carry out aforementioned defrost operation (S321, S322 and S323) repeatedly, be higher than the 3rd design temperature D3 up to the temperature that is detected by first temperature sensor 91.
When the temperature that is detected by first temperature sensor 91 was higher than the 3rd design temperature D3, the high temperature defrost operation finished.In other words, the operation of compressor 10 and Defrost heater 80 stops, and carries out switching by transfer valve 70.
Based on the switching of transfer valve 70, the cold-producing medium that discharges from compressor 10 flows to condenser 20 (S324, S325, S326) again.
By the path changing of transfer valve 70, kind of refrigeration cycle is in normal operating state, and gets back to the normal operation step (S100) of carrying out whole (general) normal operating afterwards again at end high temperature defrost operation [defrost operation step (S300)].
Simultaneously, under low temperature defrost operation situation, wherein the temperature of extraneous air is lower than the second design temperature D2, compressor 10, blower fan 11 and cooling fan 41 (S331 and S332) out of service.
Determine by first temperature sensor 91 whether the temperature of evaporimeter 40 sides reaches the 3rd design temperature D3.
The 3rd design temperature D3 can be set to about 3 ℃.Determine when the temperature of evaporimeter 40 sides is about 3 ℃, to carry out defrosting.On the other hand, when the temperature of evaporimeter 40 sides is lower than about 3 ℃, continue to carry out defrost operation (S340).
At length, when the temperature of evaporimeter 40 sides is lower than the 3rd design temperature (in step S331 and S332, the operation of compressor 10, cooling fan 41 and blower fan 11 is closed, and the temperature of evaporimeter 40 is in the subzero state), open Defrost heater 80.
Because the temperature of extraneous air is in the state that is lower than the second design temperature D2, so compressor 10 runs at high speed, make the required a large amount of cold-producing mediums of defrosting can be supplied to evaporimeter 40 sides.
Be directed into evaporimeter 40 from the high temperature and high pressure cold-producing medium (hot gas) of compressor 10 discharging by bypass pipe 60, and the surface of evaporimeter 40 is heated, thereby can defrosts.
Defrost heater 80 can just move before switching refrigerant flow path by the operation of transfer valve 70 and afterwards.Particularly, carry out the early stage of defrosting, can control a large amount of heat of its supply.
Simultaneously, carry out aforementioned defrost operation (S341, S342 and S343) repeatedly, be higher than the 3rd design temperature D3 up to the temperature that is detected by first temperature sensor 91.
When the temperature that is detected by first temperature sensor 91 was higher than the 3rd design temperature D3, the low temperature defrost operation finished.In other words, the operation of compressor 10 and Defrost heater 80 stops, and carries out switching by transfer valve 70.
Based on the switching of transfer valve 70, the cold-producing medium that discharges from compressor 10 flows to condenser 20 (S344, S345 and S346) again.
Fig. 6 is curve map, illustrates with reference to the control method of refrigerator according to the embodiment of the invention, and input voltage over time during the high temperature defrost operation; And
With reference to Fig. 6, by period 1, second round, period 3 and period 4 during the high temperature defrost operation, and the variation of the speed of service of compressor 10 (rotary speed) and rotary speed are subjected to different control in each cycle to operation compressor 10 with in order.
At length, when power was applied to compressor 10, in the period 1, the initial input voltage of compressor 10 was set to Vo.The size of Vo can be 120V (rms).
Compressor 10 continues (linearly) increase input voltage in the time of about t1, make this voltage reach V1.At this, predefined time t1 can be about 6 seconds.
The size of V1 can be 130V (rms), and can with the high temperature defrost operation during high rotation speed corresponding.
The voltage that is input to compressor 10 remains unchanged time of about t2 according to the size of the V1 in second round.At this, predefined time t2 can be about 3 minutes.
Thereby compressor 10 continues the increase input voltage after operation, and keeps high rotation speed (input voltage V1) in the t2 preestablishing time t1.
Under the state that keeps high rotation speed, increase from the temperature of the cold-producing medium of compressor 10 dischargings, thereby can effectively carry out defrosting.
Yet, when compressor 10 keeps high rotation speed (input voltage V1) for a long time, increase from the pressure of the cold-producing medium of compressor 10 dischargings, and the pressure of the suction side of evaporimeter 40 increases, thereby produces noise.
Therefore, after the time of having passed through about t2, control to reduce the rotary speed of compressor 10, it is the threshold value of noise permissible level.In other words, the pressure of the cold-producing medium in being inhaled into evaporimeter 40 sides surpasses the moment of setting pressure, and the rotary speed of compressor 10 reduces from high rotation speed.
For fear of the noise of the compressor in the period 3, the rotary speed of compressor 10 from high rotation speed (input voltage V1) gradually (linear low) reduce.
At length, the input voltage of compressor 10 continues to reduce from V1, and from time started of defrost operation through during t3, this input voltage can be V2.At this, after compressor operating, predefined time t3 can be set to about 14 minutes, and V2 is predetermined voltage, and can be set to roughly 100V (rms).
Because the rotary speed of compressor 10 reduces, thus reduce from the pressure of the suction side of the pressure of the cold-producing medium of compressor 10 dischargings and evaporimeter 40, thus noise is reduced.
In a word, the rotary speed of compressor 10 according to the Vo shown in Fig. 6 to the call by pattern of V2 with control, can remain in the permissible range from the temperature levels of the hot gas of compressor 10 dischargings, thereby can prevent the noise of compressor 10.
In the period 4, the input voltage of compressor 10 remains V2.At this moment, carry out defrost operation.
The rotary speed of compressor 10 can remain minimum rotary speed (input voltage V2) up to the time (t4) of defrost operation end.As shown in Figure 5, the condition that finishes of defrost operation is that the temperature of evaporimeter 40 reaches the 3rd design temperature D3.
The input voltage that is applied to compressor 10 is along with the end of defrost operation is closed, and compressor 10 is out of service.
As mentioned above, as an embodiment, provided the suggestion of the rotary speed (input voltage Vo is to V2) of compressor 10, the rotary speed of this compressor 10 also can be suggested to other preset values according to the capacity of defrosting heat and compressor 10.
Fig. 7 is a curve map, illustrates with reference to the control method of refrigerator according to the embodiment of the invention, and input voltage over time during the low temperature defrost operation.
Fig. 7 shows the variation of the input voltage of compressor 10, that is to say, according to the variation of the time during the low temperature defrost operation, the variation of input voltage in period 1 and second round.
With reference to Fig. 7, by being input to the voltage of compressor 10, compressor 10 is carried out the low temperature defrost operation simultaneously with initial rotary speed (initial input voltage V0) rotation.At this, initial input voltage can be set to 120V (rms).
Be applied to and continue (linearly) in time of input voltage predefined t5 in the period 1 of compressor 10 and increase.At this, described time t5 can be about 20 seconds after compressor 10 operations.
After having passed through time t5, compressor 10 can be with high rotation speed (input voltage V3) rotation.At this, preset value V3 can be set to about 180V (rms).
Compressor 10 by V3 (being the input voltage of 180V (rms)) with high relatively speed rotation (comparing with the V1 of Fig. 6), thereby, compare with the refrigerant temperature during the high temperature defrost operation, can discharge the cold-producing medium of higher relatively temperature and higher pressure.
Even from compressor 10 discharging be the high temperature and high pressure cold-producing medium, also externally air is to carry out the low temperature defrost operation under the state of low temperature, makes that the pressure of suction side of evaporimeter 40 is relatively low, thereby reduces noise.
In second round, reaching high rotation speed (input voltage V3) afterwards, the rotary speed of compressor 10 continues to keep.When the temperature of evaporimeter 40 approximately is 3 ℃ (this is the 3rd design temperature D3), the voltage that is applied to compressor 10 stops at time t6, and the operation of compressor 10 stops.
In a word, during the low temperature defrost operation, the voltage that is input to compressor 10 increases to V3 from first Vo, and the rotary speed of compressor 10 keeps high rotation speed V3 in the given time.
When satisfying the termination condition of low temperature defrost operation, that is to say that the temperature of evaporimeter 40 reaches the 3rd design temperature (the 3rd design temperature or higher), the voltage that is applied to compressor 10 is closed, and the operation of compressor 10 stops.
As mentioned above, control the operation of blower fan 11 according to the temperature value of the extraneous air of refrigerator, thus running refrigerating circulation effectively.
In addition, according to the temperature value of extraneous air, can optionally carry out high temperature defrost operation and low temperature defrost operation, make the defrosting of evaporimeter 40 be able to efficient execution.
And then, according to the temperature value of evaporimeter 40, can carry out the operation of Defrost heater 80 and hot gas defrosting simultaneously, make defrosting efficiency be improved.
Industrial usability
According to the control method of refrigerator of the embodiment of above-mentioned formation, compressor just moved before defrost operation, and the blower fan of cooling compressor is out of service, thereby high temperature hot gas can be supplied to evaporimeter, thereby improved defrosting efficiency.Therefore, its industrial applicability is significant.
Claims (15)
1. control method of refrigerator comprises:
Normal operation step is come repeated open/close by compressor, and is carried out normal refrigerating operation;
Operating procedure before the defrosting, opening the beginning signal and whether be transfused to and optionally carry out according to defrost operation, and described defrost operation open the beginning signal be transfused to before when the setting-up time, whether reach the opening that first design temperature is controlled the blower fan of the described compressor of cooling according to the temperature of extraneous air; And
The defrost operation step, the input of opening the beginning signal by described defrost operation is controlled, make and be bypassed to evaporimeter from the cold-producing medium of described compressor discharge, and whether reach second design temperature and optionally carry out high temperature defrost operation or low temperature defrost operation according to described external temperature, wherein, after finishing, described defrost operation step forwards described normal operation step to.
2. control method of refrigerator according to claim 1, wherein, according to setting-up time at interval, that periodically imports described defrost operation opens the beginning signal, and continues to carry out operating procedure before the described defrosting and open the beginning signal up to the described defrost operation of input.
3. control method of refrigerator according to claim 1, wherein, when not passing through described setting-up time, described blower fan is opened; When having passed through described setting-up time, whether reach described first design temperature according to the temperature of described extraneous air and control described blower fan so that its opening/closing.
4. control method of refrigerator according to claim 3 wherein, when the temperature of described extraneous air is higher than described first design temperature, is controlled described blower fan so that it is opened, and
When the temperature of described extraneous air is lower than described first design temperature, controls described blower fan so that it is closed, and move described compressor.
5. control method of refrigerator according to claim 1, wherein, when the temperature of described extraneous air is higher than described second design temperature, described defrost operation step is carried out described high temperature defrost operation, and when the temperature of described extraneous air was lower than described second design temperature, described defrost operation step was carried out described low temperature defrost operation.
6. control method of refrigerator according to claim 5, wherein, the rotary speed of the described compressor when being in described high temperature defrost operation is formed the rotary speed that is lower than the described compressor when being in described low temperature defrost operation.
7. whether control method of refrigerator according to claim 1 wherein, reaches the 3rd design temperature according to the temperature of described evaporimeter, optionally carries out the defrost operation to described evaporimeter.
8. control method of refrigerator according to claim 1, wherein, when described high temperature defrost operation, increase to high rotation speed from initial rotary speed linearity after, the rotary speed of described compressor remains unchanged in the given time, and linearity reduces again then.
9. control method of refrigerator according to claim 1, wherein, when described low temperature defrost operation, increase to high rotation speed from initial rotary speed linearity after, the rotary speed of described compressor remains unchanged and finishes up to described defrost operation.
10. control method of refrigerator comprises:
Normal operation step produces cold air by the cold-producing medium along compressor, condenser, decompressor and evaporimeter circulation;
Whether the defrost operation step according to the input of opening the beginning signal of described defrost operation and periodically operation, and reaches the 3rd design temperature and optionally carries out the defrosting of described evaporimeter according to the temperature of described evaporimeter; And
Operating procedure before the defrosting, before described defrost operation step, carry out, and when before opening of the described defrost operation of input begun signal, not passing through setting-up time, open the blower fan of the described compressor of cooling, and when having passed through setting-up time, whether be higher than the opening/closing that first design temperature is controlled described blower fan according to the temperature of extraneous air.
11. control method of refrigerator according to claim 10, wherein, with the defrosting that operation and the hot gas defrosting of Defrost heater are carried out described evaporimeter simultaneously, wherein said hot gas defrosting handle is fed to the entrance side of described evaporimeter from the cold-producing medium of the waste side of described compressor.
12. control method of refrigerator according to claim 11 wherein, surpasses moment of setting pressure at the pressure of the cold-producing medium of the entrance side that is inhaled into described evaporimeter, the described compressor when being in described hot gas defrosting slows down from high rotation speed.
13. control method of refrigerator according to claim 10, wherein, when described defrost operation, whether the temperature according to described extraneous air is higher than second design temperature, optionally carry out described low temperature defrost operation and described high temperature defrost operation, wherein said low temperature defrost operation runs at high speed described compressor, and described high temperature defrost operation moves described compressor with the speed of the compressor that is lower than described low temperature defrost operation.
14. control method of refrigerator according to claim 13, wherein, during described high temperature defrost operation, described compressor operates in order:
Period 1, increase to high rotation speed from initial rotary speed;
Second round, after reaching described high rotation speed, keep described high rotation speed in during predetermined period; And
Period 3, be reduced to minimum rotary speed from described high rotation speed; And
Period 4, after reaching described minimum rotary speed, keep this rotary speed to finish up to described defrost operation.
15. control method of refrigerator according to claim 14, wherein, during described low temperature defrost operation, described compressor comprises:
Period 1, increase to high rotation speed at this from initial rotary speed; And
After reaching described high rotation speed, keep described high rotation speed in during predetermined period second round,
When the temperature of described evaporimeter reaches described the 3rd design temperature, close the voltage that is applied to described compressor.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2009-0010936 | 2009-02-11 | ||
| KR1020090010936A KR101573538B1 (en) | 2009-02-11 | 2009-02-11 | Control method of refrigerator |
| PCT/KR2010/000515 WO2010093132A2 (en) | 2009-02-11 | 2010-01-28 | A control method of a refrigerator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102317724A CN102317724A (en) | 2012-01-11 |
| CN102317724B true CN102317724B (en) | 2013-08-21 |
Family
ID=42562155
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201080007546XA Expired - Fee Related CN102317724B (en) | 2009-02-11 | 2010-01-28 | A control method of a refrigerator |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20110289945A1 (en) |
| KR (1) | KR101573538B1 (en) |
| CN (1) | CN102317724B (en) |
| WO (1) | WO2010093132A2 (en) |
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| KR101954709B1 (en) * | 2012-09-20 | 2019-03-08 | 주식회사 대유위니아 | Refrigerator |
| US9733008B2 (en) * | 2013-03-13 | 2017-08-15 | Whirlpool Corporation | Air flow design for controlling temperature in a refrigerator compartment |
| ITTO20131095A1 (en) * | 2013-12-31 | 2015-07-01 | Indesit Co Spa | METHOD AND DEVICE FOR CHECKING A DEEP FREEZING PHASE IN A REFRIGERATOR OF THE COMBINED SINGLE-ADJUSTMENT TYPE, AND ITS REFRIGERATOR APPARATUS |
| ITTO20131093A1 (en) * | 2013-12-31 | 2015-07-01 | Indesit Co Spa | METHOD AND DEVICE FOR CHECKING A DEEP FREEZING PHASE IN A REFRIGERATOR OF THE COMBINED SINGLE-ADJUSTMENT TYPE, AND ITS REFRIGERATOR APPARATUS |
| ITTO20131094A1 (en) * | 2013-12-31 | 2015-07-01 | Indesit Co Spa | METHOD AND DEVICE FOR CHECKING A DEEP FREEZING PHASE IN A REFRIGERATOR OF THE COMBINED SINGLE-ADJUSTMENT TYPE, AND ITS REFRIGERATOR APPARATUS |
| DE102014014633A1 (en) * | 2014-09-08 | 2016-03-10 | Liebherr-Hausgeräte Lienz Gmbh | Method for operating a refrigerator and / or freezer |
| KR102299623B1 (en) * | 2015-02-02 | 2021-09-10 | 주식회사 위니아딤채 | Method for driving defrost of refrigerator |
| CN106679253A (en) * | 2016-11-01 | 2017-05-17 | 安徽美乐柯制冷空调设备有限公司 | Defrosting and refrigerating system and cold storage |
| KR20180052284A (en) * | 2016-11-10 | 2018-05-18 | 엘지전자 주식회사 | Refrigerator and Controlling method for the same |
| AU2017408715B2 (en) * | 2017-04-07 | 2020-01-23 | Mitsubishi Electric Corporation | Outdoor unit of air-conditioning apparatus |
| WO2019199386A1 (en) * | 2018-04-13 | 2019-10-17 | Carrier Corporation | Method of defrosting a refrigeration system |
| CN113063248B (en) * | 2018-05-23 | 2022-09-20 | 海尔智家股份有限公司 | Air-cooled refrigerator and control method and device of fan of air-cooled refrigerator during defrosting |
| US11493260B1 (en) | 2018-05-31 | 2022-11-08 | Thermo Fisher Scientific (Asheville) Llc | Freezers and operating methods using adaptive defrost |
| KR20200062698A (en) * | 2018-11-27 | 2020-06-04 | 엘지전자 주식회사 | Refrigerator and method for controlling the same |
| CN110260582A (en) * | 2019-06-05 | 2019-09-20 | 合肥华凌股份有限公司 | Defrosting system and refrigeration equipment with the defrosting system |
| EP3872427B1 (en) * | 2019-12-13 | 2023-11-08 | Arçelik Anonim Sirketi | A refrigerator suitable to be used in cold ambient conditions |
| US11369920B2 (en) | 2019-12-31 | 2022-06-28 | Ingersoll-Rand Industrial U.S., Inc. | Multi-mode air drying system |
| JP2022103988A (en) * | 2020-12-28 | 2022-07-08 | アクア株式会社 | refrigerator |
| KR20230010863A (en) * | 2021-07-12 | 2023-01-20 | 엘지전자 주식회사 | a refrigerator and operating method thereof |
| CN115682512A (en) * | 2021-07-30 | 2023-02-03 | 青岛海尔电冰箱有限公司 | Refrigerating and freezing device and control method thereof |
| CN113776255A (en) * | 2021-10-09 | 2021-12-10 | 北京云迹科技有限公司 | Refrigeration cabinet and refrigeration system |
| JP2023087342A (en) * | 2021-12-13 | 2023-06-23 | アクア株式会社 | refrigerator |
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- 2010-01-28 WO PCT/KR2010/000515 patent/WO2010093132A2/en active Application Filing
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Also Published As
| Publication number | Publication date |
|---|---|
| US20110289945A1 (en) | 2011-12-01 |
| WO2010093132A3 (en) | 2010-11-25 |
| WO2010093132A2 (en) | 2010-08-19 |
| KR20100091644A (en) | 2010-08-19 |
| KR101573538B1 (en) | 2015-12-02 |
| CN102317724A (en) | 2012-01-11 |
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