CN1380527A - Electric refrigerator capable of making multi-channel circulating refrigeration and its control method - Google Patents
Electric refrigerator capable of making multi-channel circulating refrigeration and its control method Download PDFInfo
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- CN1380527A CN1380527A CN 02107640 CN02107640A CN1380527A CN 1380527 A CN1380527 A CN 1380527A CN 02107640 CN02107640 CN 02107640 CN 02107640 A CN02107640 A CN 02107640A CN 1380527 A CN1380527 A CN 1380527A
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Abstract
The present invention relates to a discrete parallel multi-channel circulating refrigerated electric refrigerator and its control method. It adopts N (N is greater than 1) cold zones and N refrigeration branches which are correspondent to the above-mentioned cold zones and mutually parallel-connected, every refrigeration branch is series-connected with flow control unit, throttle device and evaporator, it also includes one or several air-liquid separation devices for preventing air intake pipeline of compressor from ice-forming (frost-forming) or preventing compressor from producing liquid hammer, and includes a controller for controlling every flow control unit to make only one refrigeration branch form refrigeration circulating loop with compressor and condenser at any time to implement time-sharing independent operation of every cold zone.
Description
Technical field
The present invention relates to the refrigerator technology, specifically, relate to a kind of have its temperature 2 or the refrigerator Refrigeration Technique of 2 above cold-zones (chamber) of independent control separately, more particularly, relate to a kind of refrigerator and control method thereof of discrete multichannel circularly cooling arranged side by side.
Background technology
Mainly there is following defective in existing two-door refrigerator: the one, flog a dead horse, waste energy, for example after refrigerating chamber is put into the food of heat, just can trigger refrigeration system starts working, but refrigerating chamber is also freezed simultaneously, this can cause freezer temperature low excessively, and the unnecessary cold that provides for refrigerating chamber is an idle work, causes the waste of the energy; The 2nd, refrigerating chamber can not independently be controlled, but promptly can not realize both closing cold rooms, also can close refrigerating chamber; The 3rd, the freezer temperature adjustable range is narrow, and freezing and refrigeration can not be changed mutually.
With above-mentioned double-door refrigerator, it is vast in territory to be suitable for China economically, effectively, the application scenario that the various places temperature difference is big.For example, some regional winter temperatures are lower, and are approaching with the temperature of freezer compartment of refrigerator; For example, there was 4 months temperature the Northeast in China approximately below-15 ℃ in 1 year, and this part regional user does not generally use refrigerating chamber winter, but the balcony that utilizes sealing is as natural big household freezer.On the other hand, the temperature in some local spring, autumn and the temperature of cold compartment of refrigerator are approaching: for example: the Yangtze river basin of China, 4 months temperature is arranged approximately below 8 ℃ in 1 year, and generally do not use refrigerating chamber in this part regional user's spring, autumn.And present household electric refrigerator can not satisfy the requirement of random closing cold room of user or refrigerating chamber, has caused energy waste.This shows that in the traditional double door refrigerator, refrigerating chamber and refrigerating chamber can not separately work independently, can not regulate temperature independently of each other, the cooling magnitude relation of two cold-zones is basic definite, and two cold-zones can not be replaced mutually.This mainly is because their evaporimeters in system's design are to work in the serial connection mode, can not control respectively refrigeration and refrigerating evaporator.During each the startup, refrigeration evaporator and refrigerating evaporator all can be worked simultaneously.Though also having occurred on market at present can be to refrigeration and the freezing refrigerator of controlling separately, but these refrigerators have adopted the independent refrigeration system of two covers, just adopt two compressors, two evaporimeters, two condensers and two cover throttling arrangements, respectively refrigerating chamber and refrigerating chamber are freezed, such refrigerator production cost is excessive, and comparing with two refrigerators is a shared shell and do not have what difference.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of refrigerator and control method thereof, realize the refrigerator of two or more cold-zones that can work alone separately with a cycle refrigeration system, promptly, can overcome the above-mentioned defective of prior art, refrigeration to each cold-zone is carried out control independent of each other, regulate the temperature of each cold-zone independently of each other, to two cold-zones, refrigerating chamber can be transferred to refrigerating chamber, also refrigerating chamber can be transferred to refrigerating chamber, also arbitrarily in closing cold room and the refrigerating chamber any one, and the relatively independent operation in two Room, can guarantee the desired temperature stabilization in any one cold-zone, not be subjected to the influence of states such as another cold-zone switch/defrost/open the door.
The above-mentioned technical problem of the present invention solves like this, construct a kind of refrigerator of discrete multichannel circularly cooling arranged side by side, N (N＞1) cold-zone and N refrigeration branch road are arranged, N refrigeration branch road is connected in parallel to each other, be serially connected in compressor, in the closed circuit of condenser, each refrigeration branch road is serially connected with flow controlling unit, throttling arrangement and evaporimeter, also comprise the one or more gas-liquid separation devices that are used to avoid described compressor air suction pipeline icing (frost) or cause the compressor liquid hammer, and make to have only a refrigeration branch road and compressor at any time by controlling each flow controlling unit, condenser constitutes refrigeration cycle, realize the controller of each cold-zone timesharing independent operating.
In according to refrigerator of the present invention, also comprise M independent of each other air-cooled cold-zone, each air-cooled cold-zone is provided with the air channel of band volume adjusting apparatus, a described M air channel can be divided into the X group, respectively with N independent cooling branch road in the evaporimeter, fan of X branch road constitute X group wind path, flow controlling unit, a M volume adjusting apparatus and X fan that described controller is controlled described N refrigeration branch road make N+M cold-zone have the controlled temperature of independence separately.
In according to refrigerator of the present invention, each air channel in every group of air channel is arranged side by side each other.
In according to refrigerator of the present invention, also comprise L subordinate cold-zone, each subordinate cold-zone has evaporimeter to be serially connected in the branch road in described N the refrigeration branch road, but L subordinate cold-zone constitutes N+L temperature control cold-zone with N independent cold-zone side by side.
In according to refrigerator of the present invention, also comprise L subordinate cold-zone, each subordinate cold-zone has evaporimeter to be serially connected in the branch road in described N the refrigeration branch road, but L subordinate cold-zone constitutes N+L+M temperature control cold-zone with N independent cold-zone side by side and a M air-cooled cold-zone.In according to refrigerator of the present invention, described gas-liquid separation device is arranged in the described closed circuit.
In according to refrigerator of the present invention, described gas-liquid separation device is separately positioned in each refrigeration branch road arranged side by side.
In according to refrigerator of the present invention, described gas-liquid separation device is separately positioned on described closed circuit and part is freezed in the branch road.
In according to refrigerator of the present invention, each independent cold-zone is provided with temperature sensor.In according to refrigerator of the present invention, dispose suitable compressor and make its refrigerating capacity Q satisfy following relation: the available machine time maximum (T of all cold-zones
Iomax) sum is less than all cold-zone (T downtime
Is) in minimum of a value (T
Ismin), that is: ∑ T
Iomax≤ T
Ismin
In according to refrigerator of the present invention, as ∑ T
Iomax＞T
IsminThe time, can select one or more adjustment modes in the following mode to make it to satisfy ∑ T
Iomax≤ T
IsminInequality: 1) increase shorter cold-zone or whole heat-insulation layers of cold-zones downtime; 2) increase the cold-zone evaporator area; 3) suitably turn down the temperature control precision of shorter cold-zone downtime.
In according to refrigerator of the present invention, the real time temperature that described controller provides according to each temperature sensor of N cold-zone and each cold-zone temperature setting of customer requirements, provide control signal to the flow controlling unit in each refrigeration branch road, make in a described N flow controlling unit to have only 1 refrigeration branch road and compressor, condenser circuit to constitute the cold-producing medium circulation at any time at most.
In according to refrigerator of the present invention, the flow controlling unit of described N refrigeration branch road is made up of with the layering of binary tree structure mode N-1 two position three-way valve, the root of " tree " connects described closed circuit, and the N of " tree " leaf portion connects the throttling arrangement of N refrigeration branch road respectively.
In according to refrigerator of the present invention, the flow controlling unit of described N refrigeration branch road is made up of N the two-way valve that is serially connected in respectively in each branch road.
In according to refrigerator of the present invention, the flow controlling unit of described N refrigeration branch road is realized by having valve or the valve combination of selecting 1 tunnel function from the N road.
In according to refrigerator of the present invention, described N is 2, and any moment has only evaporimeter, throttling arrangement and compressor, the condenser in two branch roads to form kind of refrigeration cycle.
In according to refrigerator of the present invention, described N is 3, and any moment has only evaporimeter, throttling arrangement and compressor, the condenser in three branch roads to form kind of refrigeration cycle.
In according to refrigerator of the present invention, described N is 4, and any moment has only evaporimeter, throttling arrangement and compressor, the condenser in four branch roads to form kind of refrigeration cycle.
In according to refrigerator of the present invention, described N is 5, and any moment has only evaporimeter, throttling arrangement and compressor, the condenser in five branch roads to form kind of refrigeration cycle.
In according to refrigerator of the present invention, when the individual refrigeration branch road requirement of Y (Y 〉=1) work is arranged, be unit with the time period, order will be distributed to by predesignating the refrigeration branch road that criterion is determined the time period, make it in time period distribution, constitute kind of refrigeration cycle with compressor, condenser.
In according to refrigerator of the present invention, when the individual refrigeration branch road requirement of Y (Y 〉=1) work is arranged, by current detection to each cold-zone actual temperature and the difference order that temperature is set or other orders, distribute the time period to make it in time period distribution to one of them refrigeration branch road, this refrigeration branch road and compressor, condenser constitute kind of refrigeration cycle.
In according to refrigerator of the present invention, when the individual refrigeration branch road requirement of Y (Y 〉=1) work is arranged,, determine the order of gating refrigeration branch road by the priority preset order, make the highest branch road of its medium priority in time period distribution, constitute kind of refrigeration cycle with compressor, condenser.
In according to refrigerator of the present invention, before described time period finishes,, finish this time period in advance if when the real time temperature of any one refrigeration branch road is lower than its predefined shutdown temperature; If before the described time period finished, the real time temperature of this refrigeration branch road was lower than its predefined switching temperature that is higher than shutdown temperature, and, also have other refrigeration branch road requirement work, then finish this time period in advance.
In according to refrigerator of the present invention, it is equally distributed that the described time period distributes.
In according to refrigerator of the present invention, the described time period distributes right and wrong equally distributed, each refrigeration time period that branch road distributes can be the static numerical value that sets in advance that depends on the cold-zone volume, also can be to depend on the cold-zone Current Temperatures and the dynamic value that the temperature difference of temperature is set, also can depend on cold-zone thermic load or outer environment state and variation thereof.
In according to refrigerator of the present invention, also comprise the frequency-converting control device that is used to control compressor rotary speed.
In according to refrigerator of the present invention, in described compressor, the condenser refrigerating circuit, also comprise muffler and device for drying and filtering.
Another technical problem of the present invention solves like this, constructs a kind of many cold-zones refrigerator controlling method, may further comprise the steps: detect the real time temperature of N cold-zone, it temperature with N the cold-zone of setting is compared, need to determine the refrigeration branch road of circulation; Refrigeration branch road and the closed circuit determined are connected a time period; In this time period, if the cold-zone real time temperature reaches default shutdown temperature then finishes this time period.
In method provided by the invention; described definite refrigeration branch road of circulation that needs may further comprise the steps: the cold-zone that real time temperature is higher than turn-on temperature is set to " needing refrigeration " state; the cold-zone that real time temperature is lower than shutdown temperature is set to " not needing refrigeration " state; real time temperature is in cold-zone between shutdown temperature and the turn-on temperature, does not change its state setting.
In method provided by the invention, described definite refrigeration branch road of circulation that needs may further comprise the steps: determine to be in the refrigeration branch road of the pairing refrigeration branch road in cold-zone of " needing refrigeration " state for the needs circulation.
In method provided by the invention, described definite refrigeration branch road of circulation that needs may further comprise the steps: when having the individual cold-zone of Y (Y 〉=1) to be in " needing refrigeration " state, by current detection to each cold-zone actual temperature and the difference that temperature is set from big to small or from small to large or other orders, distribute the time period to make it in time period distribution for the pairing refrigeration branch road in one of them cold-zone, this refrigeration branch road and compressor, condenser constitute kind of refrigeration cycle.
In method provided by the invention, described definite refrigeration branch road of circulation that needs may further comprise the steps: when having the individual cold-zone of Y (Y 〉=1) to be in " needing refrigeration " state, by the priority preset order, determine the order of gating refrigeration branch road, make the highest branch road of its medium priority in time period distribution, constitute kind of refrigeration cycle with compressor, condenser.
In method provided by the invention, further comprising the steps of: as to be in the time period of kind of refrigeration cycle a cold-zone, to reach default switching temperature and also exist other to be in the cold-zone of " needing refrigeration " state then finish this time period in advance if detect this cold-zone real time temperature.
In method provided by the invention, it is equally distributed that the described time period distributes.
In method provided by the invention, the described time period distributes right and wrong equally distributed, each refrigeration time period that branch road distributes can be the static numerical value that sets in advance that depends on the cold-zone volume, also can be to depend on the cold-zone Current Temperatures and the dynamic value that the temperature difference of temperature is set, also can depend on cold-zone thermic load or outer environment state and variation thereof.
In method provided by the invention, further comprising the steps of: as when all cold-zones are in " not needing refrigeration " state, to control described compressor shutdown.
Implement the refrigerator and the control method thereof of discrete multichannel circularly cooling arranged side by side provided by the invention, can adopt single compression cycle refrigeration system to be implemented in the independent temperature temperature adjustment of the two or more cold-zones in the refrigerator, each cold-zone can be switched mutually, independent switch can be distinguished in each cold-zone, the refrigerator of discrete multichannel circularly cooling arranged side by side provided by the invention, have the conventional refrigerator kind of refrigeration cycle the advantage that can not have, other significant advantage is: have separately independently by the user and whether determine a plurality of cold-zones of refrigeration work state, can realize the cold-zone independent of each other temperature of each cold-zone, can save the useless power consumption that unnecessary refrigeration takes place, simultaneously can be by the user by adjusting the volume of determining required warm area, satisfy the different needs that uses, be expected to become the main flow of following refrigerator development, broad prospect for its application is arranged.
Description of drawings
Fig. 1 is the principle simplified schematic diagram of the refrigerator of the discrete multichannel circularly cooling arranged side by side of the present invention.
Fig. 2 is the structural representation sketch of first embodiment of the invention.
Fig. 3 is the structural representation sketch of second embodiment of the invention.
Fig. 4 is the structural representation sketch of third embodiment of the invention.
Fig. 5 is the structure diagram of the embodiment of N=2 in the refrigerator of the present invention;
Fig. 6 is the structure diagram of the embodiment of N=3 in the refrigerator of the present invention;
Fig. 7 is the structure diagram of the embodiment of N=4 in the refrigerator of the present invention;
Fig. 8 is the structure diagram of the embodiment of N=5 in the refrigerator of the present invention;
Fig. 9 for the explanation refrigerator controlling method of the present invention first embodiment time-the temperature sketch;
Figure 10 for the explanation refrigerator controlling method of the present invention second embodiment time-the temperature sketch;
Figure 11 is the flow chart of explanation refrigerator controlling method of the present invention;
Figure 12 utilizes controlling method for refrigerator of the present invention to realize the direct-cooled structural representation that adds the discrete multichannel refrigeration arranged side by side of air-cooled realization.
Figure 13 utilizes the schematic diagram of controlling method for refrigerator realization of the present invention with attached cold-zone.
Figure 14 illustrates with the implementation structure figure of N two-way valve realization from one of N cold-zone gating.
The specific embodiment
In the of the present invention simple schematic diagram shown in Fig. 1, refrigeration cycle comprise N refrigeration branch road and any moment only with N refrigeration branch road in compressor 101, condenser 102 loops of a branch road formation kind of refrigeration cycle, wherein, N is the natural number greater than 1.Comprise evaporimeter 103, flow controller 104 and volume control device 105 among each refrigeration branch road i, what is more important also comprises gas-liquid separation device 106 in refrigeration branch road or closed circuit.For realizing the independently control separately of each cold-zone, also comprise the controller 107 that N volume control device 105 controlled.In the actual implementation procedure, on compressor 101, condenser 102 loops, also have muffler and device for drying and filtering (not shown).Controller is used for the temperature that is provided with according to each cold-zone actual temperature and user, determines to have only at any time in N the refrigeration branch road branch road and compressor, condenser to constitute kind of refrigeration cycle.Under N branch road situation, N+1 kind state is arranged at most, i.e. N state and N all idle 1 state of branch road of a branch road job in N branch road, adding up to has N+1 kind state.
Under the different operating state of N+1,, can adopt following means: 1) set up or strengthen the gas-liquid separation device volume for preventing the compressor liquid hit phenomenon; 2) rationally adjust the evaporimeter internal volume; 3) carry out refrigerant perfused amount optimization, take into full account the coupling of multiple running status; 4) throttling arrangement is optimized.
The cold-zone that the present invention and embodiment are alleged is meant the storage thing refrigeration space of separation.Can be the drawer form, can be cavity or other form of band door.
Fig. 2 illustrates the situation that gas-liquid separation device 201 is located at the global cycle loop of compressor 202, condenser 203 etc., Fig. 3 shows gas-liquid separation device 301,302,303 and is located at 3 situations in the branch road respectively, and Fig. 4 illustrates gas-liquid separation device and is located at freeze situation in the branch road of global cycle loop and part respectively.Wherein, 401 are located in the global cycle loop, and 402 and 403 are located at respectively in two branch roads.These gas-liquid separation devices are set are to avoiding the compressor air suction pipeline to freeze (frost) or cause the compressor liquid hammer, guarantee that the safety of cold-producing medium and compressor is normal under any working condition.
The structure situation of refrigerator embodiment of the present invention when Fig. 5 illustrates N=2, as shown in Figure 5, this refrigerator has two cold-zones that can work independently of one another i.e. first cold-zone 501 and second cold-zone 502, in first cold-zone 501 and second cold-zone 502, be respectively equipped with as first evaporimeter 503 of low-temperature receiver and second evaporimeter 504 and first temperature sensor 505 and second temperature sensor 506 that detect as refrigerating state, the first refrigeration branch road 509 comprises first evaporimeter 503 and first capillary 507 as throttling arrangement that is connected in series with it, second the refrigeration branch road 510 comprise second evaporimeter 504 and be connected in series with it as throttling arrangement second capillary 508, controller determines that to the temperature setting of two cold-zones and the numerical value of first temperature sensor 505 and second temperature sensor 506 by the first refrigeration branch road 509 still be second refrigeration branch road 510 and the compressor according to the user, condenser, device for drying and filtering, muffler and gas-liquid separation device constitute kind of refrigeration cycle, this " alternative " realized by a two-position three way magnetic valve 511, in other words, the volume control device in the first and second refrigeration branch roads is realized by same two-position three way magnetic valve 511 among Fig. 5.
This pair of cold-zone refrigerator compared with the traditional double door refrigerator, overcome traditional double door refrigerator 1) refrigerating chamber and refrigerating chamber must work simultaneously; 2) operating temperature of refrigeration, freezing two Room is associated with each other; And 3) refrigerating chamber, the fixing non-interchangeable shortcoming of refrigerating chamber.The following describes its operation principle:
1) selects a cold-zone job; do not work in another cold-zone: when the work of first cold-zone 501 is set, when do not work in second cold-zone 502; all the time connecting the described first refrigeration branch road 509 by control magnetic valve 511 gets final product; at this moment; the compressor start and stop depend on whether the first cold-zone temperature 505 reaches the temperature that requires of user's setting; promptly first temperature reaches turn-on temperature and just makes refrigerating circuit 509 work; first evaporimeter 503 begins refrigeration; be lower than shutdown temperature and work as first temperature 505; close kind of refrigeration cycle 509 even close compressor, make it not work.Otherwise, when require the work of second cold-zone 502, first cold-zone idle, when not working, control three-way magnetic valve 511 is connected the second refrigeration branch road 510 all the time and is got final product, at this moment, the compressor start and stop depend on whether the second cold-zone temperature 502 reaches the requirement temperature or whether the compressor stream time reaches regulation numerical value.
2) temperature of two cold-zones is set arbitrarily: can any one operating temperature in first cold-zone, second cold-zone be arranged between-36 to+10 degree according to user's needs.According to the control method that hereinafter will further elaborate, can control triple valve 511 timesharing between first branch road 509, the second refrigeration branch road 510 and switch back and forth, make it to reach the target temperature that the user sets.
3) two cold-zones being set is all refrigerating chamber or is all refrigerating chamber.As long as two cold-zones are set identical or close operating temperature is arranged.Its implementation procedure is the same.Owing to refrigeration and refrigerating evaporator with the traditional double door refrigerator are set up in parallel in kind of refrigeration cycle, and need not consider matching relationship between the two, can realize the disengagement area maximization, improve heat exchange area and efficient; According to timesharing control principle provided by the invention, but refrigeration and freezing two branch road independent operatings can save the idle work consumption that traditional cycle refrigerator is brought because of coupling; The user also can be according to changes of seasons and oneself use habit, closing cold room or refrigerating chamber.Simultaneously, by adopting energy-conservation components and parts, can save the power that switches cost as adopting bistable electromagnetic valve (pulse control).Both can avoid flogging a dead horse, closing cold room or refrigerating chamber separately reach dual purpose of energy saving again.
The structural representation of refrigerator embodiment of the present invention when Fig. 6 illustrates N=3; Different with last embodiment is, the volume control device in three refrigeration branch roads is realized by 2 two position three-way valves 601 and 602.Can be implemented in evaporimeter that any moment has only a branch road in three branch roads 603,604 and 605 in refrigeration, under the situation that also needs to freeze in other two cold-zones,, cold is assigned to each branch road gets in the mode of timesharing.If the user only requires one of them cold-zone and uses (leaving unused or only work as storage space in other two cold-zones) that at this moment, two triple valves are fixed to and make this refrigeration branch road and compressor, condenser constitute the position of circulation; If customer requirements wherein two cold-zones uses, then can control two triple valves and only two branch roads wherein be connected successively.If work simultaneously in three cold-zones of customer requirements, then can control and connect three branch roads successively, the order that each branch road is connected, the time span of connection depend on user's temperature setting, real-time detected cold-zone temperature and control strategy.
The structural representation of refrigerator embodiment of the present invention when Fig. 7 illustrates N=4; Volume control device in four refrigeration branch roads 704,705,706,707 by 3 two position three-way valves 701,702 and 703, realizes having only at any time among four branch road 704-707 one to form kind of refrigeration cycle with compressor, condenser etc.When having an above cold-zone to freeze, control low-temperature receiver timesharing betwixt distributes.
The structural representation of refrigerator embodiment of the present invention when Fig. 8 illustrates N=5; Volume control device among five refrigeration branch road 801-805 realizes that by 4 two position three-way valve 806-809 any moment has only among five branch road 801-805 one to form kind of refrigeration cycle with compressor 810, condenser 812, gas-liquid separation device 811 etc.But in long time period, can freeze and spend+interval of the operating temperatures of 10 degree to user desired Celsius-36 in each cold-zone, i.e. T
I stops＜t
i＜T
I opens, (I=1,2,3,4,5), wherein, T
I stops=T
I establishes-Δ i, T
I opens=T
I establishes+ Δ i, wherein, T
I stopsBe the shutdown temperature of I cold-zone, the lower limit in operating temperature interval, T
I establishesThe user who is the i cold-zone is provided with temperature, T
I opensBe the turn-on temperature of i cold-zone, the upper limit in operating temperature interval, Δ i embodies the accuracy of temperature control of I cold-zone.Δ i is big more, and is insensitive more to variations in temperature, and control accuracy is low more.
Under the big situation of N, can a frequency-converting control device be set according to the dutycycle of each branch road conducting of freezing, be used to control compressor rotary speed, so that reach better energy-saving effect.
Below in conjunction with embodiment, illustrate that control method of the present invention is how cold to be carried out timesharing between N refrigeration branch road to distribute, and illustrates following allocation criteria: 1, cold-zone refrigerating state and variation thereof one by one
As a basis determining the circulation cold-zone, the inventive method is provided with two kinds of refrigerating states for each cold-zone, and state and " not needing refrigeration " state promptly " need to freeze ".Be higher than the cold-zone of setting turn-on temperature and stipulate that its state is " need refrigeration " state detecting temperature; Be lower than the cold-zone of setting shutdown temperature and stipulate that its state is " not needing refrigeration " state detecting temperature; Be higher than the cold-zone of setting shutdown temperature, being lower than turn-on temperature and stipulate that its state maintains the original state detecting temperature.Like this, when all cold-zones are in " need not freeze " state, close compressor.Simultaneously, also can determine to choose the scope of kind of refrigeration cycle, be i.e. any moment, only in the cold-zone of " needing refrigeration ", select the cold-zone of kind of refrigeration cycle according to the cold-zone number of current being in " need refrigeration " state.2, priority assignment principle
There is a plurality of " needing refrigeration " cold-zone the low-temperature receiver conflict promptly to take place constantly any, according to the priority level that sets in advance, the order that the decision cold distributes.For example, in two cold-zones, when work simultaneously in two cold-zones; can select first cold-zone preferential all the time, like this, as long as first cold-zone needs refrigeration; just low-temperature receiver is supplied with the first refrigeration branch road, only reached shutdown temperature, just low-temperature receiver is assigned to other refrigeration branch road in first cold-zone.Under greater than 2 cold-zone situations, 1 cold-zone, 3 cold-zones, 2 cold-zones also can be set like this or other priority level, the supply of determining low-temperature receiver supplies 2 cold-zones at last in proper order for confession 1 cold-zone earlier, supply 3 cold-zones again.Any moment, when having only the high branch road of priority to freeze, the refrigeration of the branch road that the ability interrupt priority level is lower.And the lower refrigeration branch road of priority only when the refrigeration branch road that is higher than its priority not in running order (reaching shutdown temperature), can be connected the refrigeration branch road of this lower priority the kind of refrigeration cycle of compressor, condenser etc. when needs freeze.3, the uniform distribution principle of time period
For the multichannel circulation, for making each cold-zone reach it as early as possible temperature is set, or keeps it that temperature is set, requiring low-temperature receiver to distribute can consider the situation as a whole, and especially buys the new start in back or the back start that has a power failure, and requires the refrigeration of each cold-zone is required all to consider to some extent.Therefore, adopt priority to decide the distribution of low-temperature receiver just to have problem simply.For example, the cold-zone that priority is high takies the too many low-temperature receiver time, may make the low cold-zone of priority can not be in time cooled in the long duration or keep uniform temperature, and therefore, having proposed with the time period is the strategy that unit provides low-temperature receiver.Time period can evenly distribute.Being provided with N cold-zone needs refrigeration, and the longest stream time of compressor is T, and then order is K to the time period length of each refrigeration branch road
*T/N, K are occupation efficiency, K＜1.Combine with aforementioned priority, just just like the control procedure of Fig. 9.
In Fig. 9, three cold-zones are arranged, priority orders is cold-zone 1; cold-zone 3 and cold-zone 2; after the power failure start; cold-zone 1; 2; 3 all need refrigeration (solid line represent real time temperature being provided with on the temperature that dotted line is represented), like this, and at first in the 0-t1 interval; conducting first branch road; connected for cold-zone 13 minutes, connected for cold-zone 33 minutes at t1-t2 again, again in the t2-t3 interval; cold-zone 2 was connected 3 minutes; because cold-zone 1 does not reach shutdown temperature, give cold-zone 1 cooling once more in the t3-t4 interval, give cold-zone 3 coolings at t4-t5; at this moment; because cold-zone 3 has reached shutdown temperature, shift to an earlier date this time period of end loop at t5, at this moment the not enough official hour section of the time span between the t4-t5; at this moment; have only cold-zone 1 and cold-zone 2 to need refrigeration, during t5-t6, give cold-zone 2 coolings 3 minutes; after the end; in the t6-t7 interval, give cold-zone 1 cooling, because cold-zone 1 temperature has reached shutdown temperature; concluding time section (the not enough official hour section of the time span between the t6-t7) continues to cold-zone 2 coolings at t7-t8 in advance.Temperature up to 3 cold-zones fluctuates near the temperature of setting, reaches the purpose that each cold-zone temperature is independently controlled.4, the static non-homogeneous distribution principle of time period
Because the size of cold-zone is fixed, and can pre-determine the coefficient of its non-homogeneous distribution according to its size, promptly each time period length of distributing differs from one another.For example, the ON time section coefficient of N cold-zone can be made as respectively S1, S2,,,, SN, need the long period at every turn, S is bigger.For example, cold-zone that can volume is bigger is provided with bigger coefficient S.For example, it is 30s that each 30 chronomere of circulation can be set, and 4 cold-zones are arranged, and the corresponding predistribution time can be distributed and is expressed as 10s, 8s, 6s and 6s respectively.5, the dynamic assignment principle of time period
Decide to connect which refrigeration branch road earlier according to cold-zone real time temperature and the difference that temperature is set.Reach turn-on temperature in a plurality of cold-zones, when needing refrigeration, preferentially select the real time temperature cold-zone bigger refrigeration earlier with temperature spread is set.Also can be opposite, preferentially select the real time temperature cold-zone less refrigeration earlier with temperature spread is set.Also can select other criterions.6, dispatch based on the time period of switching temperature
On the time period time-sharing basis, increase the scheduling strategy of switching temperature, need to guarantee the branch road of refrigeration to obtain the response of kind of refrigeration cycle timely.So-called switching temperature has reached a temperature exactly in a cold-zone process of refrigerastion, and other cold-zone also needs refrigeration, at this moment, low-temperature receiver is switched away from this cold-zone.For example, the temperature that is provided with of a cold-zone in two cold-zones is-20, and it is+5 that another cold-zone is provided with temperature; if first cold-zone is preferential; then will reach its shutdown temperature needs for a long time, if be provided with switching temperature, just can take into full account another cold-zone and in time obtain cold.
Figure 10 shows this scheduling strategy.Be provided with 4 cold-zones, cold-zone 3 just is provided with temperature behind t2, before t2, have only cold-zone 1,2,4 that temperature is set, do not having under the situation of priority difference, at the 0-t1 time interval, to cold-zone 1 refrigeration official hour length, at t1-t2, to cold-zone 2 refrigeration official hour length, at t2-t3, to cold-zone 4 refrigeration official hour length.Behind t3, because cold-zone 3 needs refrigeration, cold-zone 3 has entered the formation that needs refrigeration, at t3-t4, continue the refrigeration of cold-zone 1,, cold-zone 2 refrigeration are made it to have reached switching temperature at t4-t5, at this moment, finish this period in advance, at t5-t6, to cold-zone 3 coolings,, cold-zone 4 coolings are made it to have reached switching temperature at t6-t7, therefore finish this period in advance,, cold-zone 1 refrigeration is reached switching temperature at t7-t8, finish this period in advance, at t8-t9, to cold-zone 3 refrigeration.Different with Fig. 9 control strategy is, can finish specified time period in advance when reaching switching temperature, and making has more in other cold-zone multimachine can obtain refrigeration.Proposing the cold-zone switching temperature, mainly is to be suitable for a plurality of cold-zones begin to start refrigeration from room temperature situation.At this moment, for temperature is set is subzero situation, for example subzero 10 degree, can switching temperature be set to be higher than the numerical value (0 degree) of turn-on temperature (9 degree), switching temperature is only when existing other " to need to freeze " cold-zone, just switch, if be not in other cold-zone of " needing refrigeration ", then the switching temperature of current cold-zone does not switch.
Figure 11 illustrates an indicative flowchart realizing refrigerator controlling method of the present invention.In frame 1101, detect the temperature of each cold-zone, in frame 1102, detected each real time temperature and the temperature that sets in advance are compared, determine the cold-zone number i of current " needing refrigeration ", judge in frame 1103 whether i equals 0, be in " not needing refrigeration " state if equal 0 all cold-zones of explanation, like this can be in frame 1104 close compressor; Be not equal to 0 if judge i, one or more " needing refrigeration " cold-zone is promptly arranged, then in frame 1105, judge that each cold-zone has or not priority level, if any then in frame 1106, determine that the j cold-zone is the cold-zone of override cooling, as no priority, then in frame 1107, determine the preferential j cold-zone cooling of giving according to the temperature difference or the definite order of additive method.In frame 1108, the control volume control device makes j branch road conducting kind of refrigeration cycle, and time started section timing, in frame 1109, judge whether the j branch road reaches shutdown temperature, if be equal to or less than shutdown temperature, then be set to " not needing refrigeration " state in this cold-zone of frame, return frame 1101; If do not reach shutdown temperature, in frame 1110, judge that whether real time temperature reaches switching temperature I＞1 (also having the cold-zone to be in " needing refrigeration " state) simultaneously, in this way, then enters frame 1101; Otherwise whether the timing of judgement time section finishes in frame 1111, as finishing, then enters frame 1101, otherwise, enter frame 1109.
Figure 12 illustrates the embodiment of the refrigerator of the discrete multichannel refrigeration arranged side by side of direct-cooled and air-cooled formation, among the figure, compressor 1201, condenser 1202, gas-liquid separator 1203, and be connected to N and connect direct-cooled branch road 1204, each branch road has evaporimeter, throttling arrangement and volume control device, and the volume control device on N road can be realized with N-1 two position three-way valve.
If the evaporimeter of each branch road is distributed to a cold-zone, then can constitute N cold-zone, under the situation that needs N+M cold-zone, can be with the air-cooled independent cooling of realizing the cold-zone of M wherein.Among Figure 12, show on i cold-zone, be provided with one group of M1 air-cooled cold-zone, specifically be provided with fan 1205 near the evaporimeter of i cold-zone, the air-cooled cold-zone of each i cold-zone association has air-flow control device 1206 (air door), cold-zone 1207 and cold-zone temperature sensor (not shown) respectively.In cold district between this group; freeze if needed; can control and open fan 1205 (need not open again) and the air-flow control device corresponding, when this cold-zone temperature reaches shutdown temperature, close the air-flow control device 1206 that is independent of this cold-zone with it as opening then.When M1 cold-zone of this group all reached shutdown temperature, then can close fan 1205.
Figure 13 is illustrated on N shown in Figure 1 the branch road basis arranged side by side, and the situation of cascade evaporation device is arranged on a branch road or the several branch road therein.If connect M evaporimeter, the evaporimeter of each serial connection is located in the cold-zone, and then adding up to provide N+M cold-zone, wherein M the cold-zone that right and wrong are independently controlled., suppose in the branch road that the serial connection evaporimeter is arranged herein, freeze the cold-zone of temperature sensor of control for temperature control but have, otherwise be can not be its subordinate cold-zone of independently controlling according to its numerical value.By cascade evaporation device on the master of branch road is freezed branch road side by side, can realize more cold-zones with the control of simplifying, form one based on independent cold-zone, the subordinate cold-zone is the Polythermal Region Refrigerator of assisting.
Figure 14 illustrates with N two-way valve 1401-140N and realizes that N selects one refrigerator.If control i cold-zone refrigeration,, provide shutdown signal to get final product to all the other N-1 two-way valve as long as provide Continuity signal to the two-way valve of i branch road.For example, when the i branch road switches to the j branch road, necessary operations is, " cut-outs " signal is provided for the two-way valve of i branch road, provides " conducting " signal to the two-way valve of j branch road.In other words, each switching all has only two operations, one " cut-out ", one " conducting ".And for the situation of N-1 the triple valve that adopts binary tree structure, the maximum number of operations that switches to the j branch road and need from the i branch road depends on the number of plies of tree, to controlling 2 layers of binary tree of 4 branch roads, number of operations is 2 at most, to controlling 3 layers of binary tree of 8 branch roads at most, number of operations is 3 at most, and the like.
Embodiments of the invention just do not constitute any limitation of the invention to of the present invention schematically illustrating; those of ordinary skills are under example disclosed by the invention guides and instructs; make various modification and modification, also will drop in the protection domain that is defined by the claims.
Claims (37)
1, a kind of refrigerator of discrete multichannel circularly cooling arranged side by side, it is characterized in that, N (N＞1) cold-zone and N refrigeration branch road are arranged, N refrigeration branch road is connected in parallel to each other, be serially connected in compressor, in the closed circuit of condenser, each refrigeration branch road is serially connected with flow controlling unit, throttling arrangement and evaporimeter, also comprise the one or more gas-liquid separation devices that are used to avoid described compressor air suction pipeline icing (frost) or cause the compressor liquid hammer, and make to have only a refrigeration branch road and compressor at any time by controlling each flow controlling unit, condenser constitutes refrigeration cycle, realize the controller of each cold-zone timesharing independent operating.
2, according to the described refrigerator of claim 1, it is characterized in that, also comprise M independent of each other air-cooled cold-zone, each air-cooled cold-zone is provided with the air channel of band volume adjusting apparatus, a described M air channel can be divided into the X group, respectively with N independent cooling branch road in the evaporimeter, fan of X branch road constitute X group wind path, flow controlling unit, a M volume adjusting apparatus and X fan that described controller is controlled described N refrigeration branch road make N+M cold-zone have the controlled temperature of independence separately.
According to the described refrigerator of claim 2, it is characterized in that 3, every group of air channel comprises Yi Ge Wind road at least, each air channel in the described air channel is arranged side by side each other.
4, according to the described refrigerator of claim 1, it is characterized in that, also comprise L subordinate cold-zone, each subordinate cold-zone has evaporimeter to be serially connected in the branch road in described N the refrigeration branch road, but L subordinate cold-zone constitutes N+L temperature control cold-zone with N independent cold-zone side by side.
5, according to claim 2 or 3 described refrigerators, it is characterized in that, also comprise L subordinate cold-zone, each subordinate cold-zone has evaporimeter to be serially connected in the branch road in described N the refrigeration branch road, but L subordinate cold-zone constitutes N+L+M temperature control cold-zone with N independent cold-zone side by side and a M air-cooled cold-zone.
6, according to any one described refrigerator of claim 1-5, it is characterized in that described gas-liquid separation device is arranged in the described closed circuit.
According to any one described refrigerator of claim 1-5, it is characterized in that 7, described gas-liquid separation device is separately positioned in each refrigeration branch road arranged side by side.
According to any one described refrigerator of claim 1-5, it is characterized in that 8, described gas-liquid separation device is separately positioned on described closed circuit and part is freezed in the branch road.
According to the described refrigerator of claim 1-3, it is characterized in that 9, each described independent cold-zone is provided with temperature sensor.
10, according to the described refrigerator of claim 1-9, it is characterized in that, dispose suitable compressor and make its refrigerating capacity Q satisfy following relation: the available machine time maximum (T of all cold-zones
Iomax) sum is less than all cold-zone (T downtime
Is) in minimum of a value (T
Ismin), that is: ∑ T
Iomax≤ T
Ismin
11, refrigerator according to claim 10 is characterized in that, as ∑ T
Iomax＞T
IsminThe time, can select one or more adjustment modes in the following mode to make it to satisfy ∑ T
Iomax≤ T
IsminInequality: 1) increase the heat-insulation layer of downtime than short or whole cold-zones; 2) increase the cold-zone evaporator area; 3) suitably turn down the temperature control precision of lacking the cold-zone downtime.
12, according to the described refrigerator of claim 6-9, it is characterized in that, the real time temperature that described controller provides according to each temperature sensor of N cold-zone and each cold-zone temperature setting of customer requirements, provide control signal to the flow controlling unit in each refrigeration branch road, make in a described N flow controlling unit to have only 1 refrigeration branch road and compressor, condenser circuit to constitute the cold-producing medium circulation at any time at most.
13, according to the described refrigerator of claim 12, it is characterized in that, the flow controlling unit of described N refrigeration branch road is made up of with the layering of binary tree structure mode N-1 two position three-way valve, the root of " tree " connects described closed circuit, and the N of " tree " leaf portion connects the throttling arrangement of N refrigeration branch road respectively.
According to the described refrigerator of claim 12, it is characterized in that 14, the flow controlling unit of described N refrigeration branch road is made up of N the two-way valve that is serially connected in respectively in each branch road.
According to the described refrigerator of claim 12, it is characterized in that 15, the flow controlling unit of described N refrigeration branch road is realized by having valve or the valve combination of selecting 1 tunnel function from the N road.
According to any one described refrigerator of claim 1-15, it is characterized in that 16, described N is 2, any moment has only evaporimeter, throttling arrangement and compressor, the condenser in two branch roads to form kind of refrigeration cycle.
According to the described refrigerator of claim 1-15, it is characterized in that 17, described N is 3, any moment has only evaporimeter, throttling arrangement and compressor, the condenser in three branch roads to form kind of refrigeration cycle.
According to the described refrigerator of claim 1-15, it is characterized in that 18, described N is 4, any moment has only evaporimeter, throttling arrangement and compressor, the condenser in four branch roads to form kind of refrigeration cycle.
According to the described refrigerator of claim 1-15, it is characterized in that 19, described N is 5, have only one evaporimeter, throttling arrangement and compressor, condenser to form kind of refrigeration cycle in five branch roads of any moment.
20, according to the described refrigerator of claim 1-15; it is characterized in that; each independent cold-zone comprises a state storage unit; be used for being set to " needing refrigeration " state to detecting the cold-zone that temperature is higher than its turn-on temperature; the cold-zone that temperature is lower than its shutdown temperature is set to " not needing refrigeration " state; temperature be in shut down and turn-on temperature between the cold-zone, do not change its state setting.
21, according to the described refrigerator of claim 20, it is characterized in that, when having the individual cold-zone of Y (Y 〉=1) to be in " needing refrigeration " state, with the time period is unit, order will be distributed to by predesignating the refrigeration branch road that criterion is determined the time period, make it in time period distribution, constitute kind of refrigeration cycle with compressor, condenser.
22, according to the described refrigerator of claim 20-21, it is characterized in that, when having the individual cold-zone of Y (Y 〉=1) to be in " needing refrigeration " state, by current detection to each cold-zone actual temperature and the difference order that temperature is set or other order, distribute the time period to make it in time period distribution to one of them refrigeration branch road, this refrigeration branch road and compressor, condenser constitute kind of refrigeration cycle.
23, according to the described refrigerator of claim 20-22, it is characterized in that, when having the individual cold-zone of Y (Y 〉=1) to be in " needing refrigeration " state, by the priority preset order, determine the order of gating refrigeration branch road, make the highest branch road of its medium priority in time period distribution, constitute kind of refrigeration cycle with compressor, condenser.
24, according to the described refrigerator of claim 20-23, it is characterized in that, before described time period finishes,, finish this time period in advance and be set to " not needing refrigeration " state if when the real time temperature of any one refrigeration branch road is lower than its predefined shutdown temperature; If before the described time period finished, the real time temperature of this refrigeration branch road was lower than its predefined switching temperature that is higher than shutdown temperature, and, also have other cold-zone to be in " needing refrigeration " state, then finish this time period in advance.
According to any one described refrigerator of claim 20-24, it is characterized in that 25, it is equally distributed that the described time period distributes.
26, according to any one described refrigerator of claim 20-25, it is characterized in that, the described time period distributes right and wrong equally distributed, each refrigeration time period that branch road distributes can be the static numerical value that sets in advance that depends on the cold-zone volume, also can be to depend on the cold-zone Current Temperatures and the dynamic value that the temperature difference of temperature is set, also can depend on cold-zone thermic load or outer environment state and variation thereof.
27, according to the described refrigerator of claim 1-26, it is characterized in that, also comprise the frequency-converting control device that is used to control compressor rotary speed.
28, according to the described refrigerator of claim 1-26, it is characterized in that, in described compressor, the condenser refrigerating circuit, also comprise muffler and device for drying and filtering.
29, a kind of many cold-zones refrigerator controlling method may further comprise the steps: detect the real time temperature of N cold-zone, with it with temperature of N the cold-zone of setting relatively, determine the refrigeration branch road that need circulate; Refrigeration branch road and the closed circuit determined are connected a time period; Also can reach default shutdown temperature and then finish this time period at the cold-zone real time temperature.
30, according to the described method of claim 29; it is characterized in that; described definite refrigeration branch road of circulation that needs may further comprise the steps: the cold-zone that real time temperature is higher than turn-on temperature is set to " needing refrigeration " state; the cold-zone that real time temperature is lower than shutdown temperature is set to " not needing refrigeration " state; real time temperature is in cold-zone between shutdown temperature and the turn-on temperature, does not change its state setting.
According to the described method of claim 30, it is characterized in that 31, described definite refrigeration branch road of circulation that needs may further comprise the steps: determine to be in the refrigeration branch road of the pairing refrigeration branch road in cold-zone of " needing refrigeration " state for the needs circulation.
32, according to the described method of claim 31, it is characterized in that, described definite refrigeration branch road of circulation that needs may further comprise the steps: when having the individual cold-zone of Y (Y 〉=1) to be in " needing refrigeration " state, by current detection to each cold-zone actual temperature and the difference that temperature is set from big to small or from small to large or other orders, distribute the time period to make it in time period distribution for the pairing refrigeration branch road in one of them cold-zone, this refrigeration branch road and compressor, condenser constitute kind of refrigeration cycle.
33, according to the described method of claim 31, it is characterized in that, described definite refrigeration branch road of circulation that needs may further comprise the steps: when having the individual cold-zone of Y (Y 〉=1) to be in " needing refrigeration " state, by the priority preset order, determine the order of gating refrigeration branch road, make the highest branch road of its medium priority in time period distribution, constitute kind of refrigeration cycle with compressor, condenser.
34, according to claim 32,33 described methods, it is characterized in that, further comprising the steps of: as to be in the time period of kind of refrigeration cycle a cold-zone, to reach default switching temperature and also exist other to be in the cold-zone of " needing refrigeration " state then finish this time period in advance if detect this cold-zone real time temperature.
According to the described method of claim 29-34, it is characterized in that 35, it is equally distributed that the described time period distributes.
36, according to the described method of claim 29-34, it is characterized in that, the described time period distributes right and wrong equally distributed, each refrigeration time period that branch road distributes can be the static numerical value that sets in advance that depends on the cold-zone volume, also can be to depend on the cold-zone Current Temperatures and the dynamic value that the temperature difference of temperature is set, also can depend on cold-zone thermic load or outer environment state and variation thereof.
37, according to the described method of claim 29-34, it is characterized in that, further comprising the steps of: as when all cold-zones are in " not needing refrigeration " state, to control described compressor shutdown.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021076405A CN1180216C (en) | 2001-03-21 | 2002-03-20 | Electric refrigerator capable of making multi-channel circulating refrigeration and its control method |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN01215732.5 | 2001-03-21 | ||
| CN01215732 | 2001-03-21 | ||
| CNB021076405A CN1180216C (en) | 2001-03-21 | 2002-03-20 | Electric refrigerator capable of making multi-channel circulating refrigeration and its control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1380527A true CN1380527A (en) | 2002-11-20 |
| CN1180216C CN1180216C (en) | 2004-12-15 |
Family
ID=25740722
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021076405A Expired - Lifetime CN1180216C (en) | 2001-03-21 | 2002-03-20 | Electric refrigerator capable of making multi-channel circulating refrigeration and its control method |
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| Country | Link |
|---|---|
| CN (1) | CN1180216C (en) |
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| CN1312452C (en) * | 2004-05-09 | 2007-04-25 | 广东科龙电器股份有限公司 | Multi-circulation refrigerator with circulation fan and separated refrigeration and freezing compartment |
| CN101535745B (en) * | 2006-11-09 | 2012-05-09 | Lg电子株式会社 | Apparatus for refrigeration cycle and refrigerator |
| US8447432B2 (en) | 2006-12-26 | 2013-05-21 | Lg Electronics Inc. | Refrigerator and control method for the same |
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| CN1312452C (en) * | 2004-05-09 | 2007-04-25 | 广东科龙电器股份有限公司 | Multi-circulation refrigerator with circulation fan and separated refrigeration and freezing compartment |
| CN101535745B (en) * | 2006-11-09 | 2012-05-09 | Lg电子株式会社 | Apparatus for refrigeration cycle and refrigerator |
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| US8447432B2 (en) | 2006-12-26 | 2013-05-21 | Lg Electronics Inc. | Refrigerator and control method for the same |
| CN108725799A (en) * | 2013-09-04 | 2018-11-02 | 波音公司 | System and method for the galley compartment that freezes |
| CN108725799B (en) * | 2013-09-04 | 2022-06-07 | 波音公司 | Controller for operating a refrigeration system, galley for use in a vehicle and aircraft |
| CN104654015A (en) * | 2014-12-30 | 2015-05-27 | 中国天辰工程有限公司 | Multistage matching energy supply device and process |
| CN105466062A (en) * | 2016-01-25 | 2016-04-06 | 珠海格力电器股份有限公司 | Refrigerating system of distribution cabinet |
| CN107975982B (en) * | 2016-10-24 | 2021-03-09 | 青岛海尔新能源电器有限公司 | Multi-flow-path heat exchanger, flow distribution adjusting method and refrigerant circulating system |
| CN107975982A (en) * | 2016-10-24 | 2018-05-01 | 青岛海尔新能源电器有限公司 | A kind of more flow path heat exchangers, shunt regulating method and coolant circulating system |
| CN107726700B (en) * | 2017-10-20 | 2021-05-11 | 四川长虹智能制造技术有限公司 | Refrigerator control method and system |
| CN107726700A (en) * | 2017-10-20 | 2018-02-23 | 四川长虹智能制造技术有限公司 | Controlling method for refrigerator and system |
| CN109163490A (en) * | 2018-08-01 | 2019-01-08 | 海信容声(广东)冰箱有限公司 | A kind of refrigerator and its control method and control device |
| CN109163490B (en) * | 2018-08-01 | 2021-02-02 | 海信容声(广东)冰箱有限公司 | Refrigerator and control method and control device thereof |
| CN109737685A (en) * | 2018-12-17 | 2019-05-10 | Tcl家用电器（合肥）有限公司 | Multi-chamber's refrigeration control method, device and refrigerator |
| CN111306287A (en) * | 2020-03-25 | 2020-06-19 | 衢州市高昱机械有限公司 | Speed reducing mechanism for twisting machine and using method thereof |
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| CN111795541B (en) * | 2020-06-24 | 2021-11-26 | 珠海格力电器股份有限公司 | Refrigerator control method and device, refrigerator, storage medium and processor |
| CN112460858B (en) * | 2020-12-01 | 2022-03-18 | 珠海格力电器股份有限公司 | Air conditioner |
| CN112460858A (en) * | 2020-12-01 | 2021-03-09 | 珠海格力电器股份有限公司 | Air conditioner |
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Granted publication date: 20041215 |
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| CX01 | Expiry of patent term |