CN106766524B

CN106766524B - Air-cooled refrigerator and operation control method thereof

Info

Publication number: CN106766524B
Application number: CN201611217958.1A
Authority: CN
Inventors: 朱小兵; 陶海波; 姬立胜; 戚斐斐; 刘建如; 刘昀曦
Original assignee: Qingdao Haier Co Ltd
Current assignee: Haier Smart Home Co Ltd
Priority date: 2016-12-26
Filing date: 2016-12-26
Publication date: 2020-09-29
Anticipated expiration: 2036-12-26
Also published as: CN106766524A

Abstract

The invention discloses an air-cooled refrigerator and an operation control method thereof. The method comprises the following steps: controlling the refrigerator to enter a synchronous refrigeration state; wherein the synchronous cooling state is set as: starting a refrigerating system, a fan, a refrigerating air door and a freezing air door; collecting the temperature Tf of a freezing chamber and the temperature Tr of a refrigerating chamber in real time, and sequentially judging whether the temperature Tf corresponds to a fourth freezing preset temperature interval or not and whether the temperature Tr corresponds to a fourth refrigerating preset temperature interval or not; when the temperature Tf corresponds to the fourth freezing preset temperature interval and the temperature Tr does not correspond to the fourth refrigerating preset temperature interval, controlling the refrigerator to enter a precooling state; wherein the pre-cooling state is set to: the refrigeration system is closed, the fan is opened, the refrigeration air door is opened, and the freezing air door is closed. The invention fully utilizes the residual cold of the evaporator to control the temperature of the refrigerating chamber, improves the energy utilization rate and has the defrosting and humidifying effects.

Description

Air-cooled refrigerator and operation control method thereof

Technical Field

The invention relates to an air-cooled refrigerator and an operation control method thereof, belonging to the technical field of household appliances.

Background

At present, with the improvement of life quality, the requirement of people on the fresh-keeping capacity of a refrigerator is more and more strict, and a refrigerating chamber and a freezing chamber are used as two storage compartments which are commonly prepared in the existing refrigerator, so that the stability and the accuracy of the temperature greatly influence the storage quality of food in the refrigerator.

Currently, air-cooled refrigerators generally have the following problems: 1) the refrigerator has a single operation mode, poor energy-saving effect and low temperature control accuracy; 2) when the refrigerating chamber is cooled, high-temperature return air of the refrigerating chamber enters the freezing chamber, so that the temperature of the freezing chamber rises, and the temperature fluctuation of the freezing chamber is large; 3) when a large amount of high-temperature articles are put into the refrigerating chamber or the freezing chamber, the refrigerating chamber or the freezing chamber is subjected to high load (namely the temperature is far greater than a starting point), and the control process of the refrigerator during normal starting and high load is the same, so that the temperature of the high load cannot be quickly reduced, the food is suddenly kept at high temperature, the food is deteriorated and rotted, and the energy consumption is high; 4) moisture loss from the cold storage compartment causes air drying problems; 5) The condition that the door body is not tightly closed has occurred due to more door opening times of the refrigerating chamber, and the refrigerating system is easy to damage after long-term operation.

Disclosure of Invention

In order to solve at least one of the above problems, the present invention provides an air-cooled refrigerator and an operation control method thereof, which can realize accurate temperature control.

In order to achieve one of the above objects, an embodiment of the present invention provides an air-cooled refrigerator, including,

a cabinet defining an evaporator chamber, and a freezing chamber and a refrigerating chamber for storing goods;

a refrigeration system including an evaporator disposed in the evaporator chamber and forming cold air in the evaporator chamber by heat exchange;

the air supply system comprises a freezing air channel for communicating the evaporator chamber with the freezing chamber, a refrigerating air channel for communicating the evaporator chamber with the refrigerating chamber, a fan arranged in the evaporator chamber, a refrigerating air door for opening and closing the refrigerating air channel and a freezing air door for opening and closing the freezing air channel;

a control system for: controlling the refrigeration system to be started, the fan to be started, the refrigerating air door to be opened and the freezing air door to be opened so as to enable the refrigerator to enter a synchronous refrigeration state; acquiring the temperature Tf of the freezing chamber and the temperature Tr of the refrigerating chamber in real time, and sequentially judging whether the temperature Tf corresponds to a fourth freezing preset temperature interval or not and whether the temperature Tr corresponds to a fourth refrigerating preset temperature interval or not; and when the temperature Tf corresponds to the fourth freezing preset temperature interval and the temperature Tr does not correspond to the fourth freezing preset temperature interval, controlling the refrigeration system to be closed, the fan to be opened, the cold storage air door to be opened and the freezing air door to be closed so as to enable the refrigerator to enter a precooling state.

As a further improvement of an embodiment of the present invention, the control system is further configured to: when the refrigerator enters the precooling state, synchronously counting the time t' of the refrigerator in the precooling state; and when the temperature Tr does not correspond to the fourth preset refrigeration temperature interval all the time in the process that the time t' reaches a second preset time t2, controlling the refrigeration system to be opened, the fan to be opened, the refrigeration air door to be opened and the freezing air door to be closed so as to enable the refrigerator to enter a refrigeration state; and controlling the refrigeration system to be closed, the fan to be closed, the refrigerating air door to be closed and the freezing air door to be closed to enable the refrigerator to enter a shutdown state when the temperature Tr corresponds to a fourth preset refrigerating temperature interval before the time t' reaches a second preset time t 2.

As a further improvement of an embodiment of the present invention, the control system is further configured to: and when the refrigerator is in the refrigerating state, if the temperature Tr does not correspond to the fourth refrigerating preset temperature interval and the temperature Tf corresponds to the freezing starting preset temperature interval, controlling the refrigerator to reenter the synchronous refrigerating state.

As a further improvement of an embodiment of the present invention, the control system is further configured to: controlling the refrigerator to execute a high load mode when at least one of a third preset condition and a fourth preset condition is met; and controlling the refrigerator to enter the synchronous cooling state when the refrigerator performs the high load mode;

the third preset condition is that the temperature Tr corresponds to a refrigerated first preset temperature interval, and the fourth preset condition is that the temperature Tf corresponds to a frozen first preset temperature interval.

As a further improvement of an embodiment of the present invention, the control system is further configured to: when the third preset condition is met and the fourth preset condition is not met, controlling the refrigerator to execute a first sub-mode of the high-load mode; when the third preset condition is not met and the fourth preset condition is met, controlling the refrigerator to execute a second sub-mode of the high-load mode; and when the third preset condition and the fourth preset condition are both met, controlling the refrigerator to execute a third sub-mode of the high-load mode.

In order to achieve one of the above objects, an embodiment of the present invention further provides an operation control method for an air-cooled refrigerator, including:

controlling the refrigerator to enter a synchronous refrigeration state; wherein the synchronous cooling state is set as: starting a refrigerating system, a fan, a refrigerating air door and a freezing air door;

collecting the temperature Tf of a freezing chamber and the temperature Tr of a refrigerating chamber in real time, and sequentially judging whether the temperature Tf corresponds to a fourth freezing preset temperature interval or not and whether the temperature Tr corresponds to a fourth refrigerating preset temperature interval or not;

when the temperature Tf corresponds to the fourth freezing preset temperature interval and the temperature Tr does not correspond to the fourth refrigerating preset temperature interval, controlling the refrigerator to enter a precooling state; wherein the pre-cooling state is set to: the refrigeration system is closed, the fan is opened, the refrigeration air door is opened, and the freezing air door is closed.

As a further improvement of an embodiment of the present invention, the method further comprises the steps of:

when the refrigerator enters the precooling state, synchronously counting the time t' of the refrigerator in the precooling state;

when the temperature Tr does not correspond to the fourth refrigerating preset temperature interval all the time in the process that the time t' reaches the second preset time t2, controlling the refrigerator to enter a refrigerating state; wherein the refrigeration state is set as: the refrigeration system is started, the fan is started, the refrigeration air door is opened, and the freezing air door is closed;

when the temperature Tr corresponds to the fourth preset temperature interval before the time t' reaches a second preset time t2, controlling the refrigerator to enter a shutdown state; wherein the shutdown state is set to: the refrigeration system is closed, the fan is closed, the refrigeration air door is closed, and the freezing air door is closed.

when the refrigerator is in the refrigerating state, judging whether the temperature Tr corresponds to a fourth preset refrigerating temperature interval or not;

if the temperature Tr does not correspond to the fourth preset refrigeration temperature interval, judging whether the temperature Tf corresponds to a preset refrigeration starting temperature interval or not;

and if the temperature Tf corresponds to the preset temperature interval of the freezing starting machine, returning to the step of controlling the refrigerator to enter a synchronous refrigerating state.

controlling the refrigerator to execute a high load mode when at least one of a third preset condition and a fourth preset condition is satisfied; wherein the third preset condition is that the temperature Tr corresponds to a refrigerated first preset temperature interval, and the fourth preset condition is that the temperature Tf corresponds to a refrigerated first preset temperature interval; the high load mode includes the step of 'controlling the refrigerator to enter the synchronous cooling state'.

As a further improvement of an embodiment of the present invention, the step of controlling the refrigerator to perform the high load mode when at least one of the third preset condition and the fourth preset condition is satisfied includes:

when the third preset condition is met and the fourth preset condition is not met, controlling the refrigerator to execute a first sub-mode of a high-load mode;

when the third preset condition is not met and the fourth preset condition is met, controlling the refrigerator to execute a second sub-mode of the high-load mode;

and when the third preset condition and the fourth preset condition are both met, controlling the refrigerator to execute a third sub-mode of the high-load mode.

Compared with the prior art, the invention has the beneficial effects that: the independent cooling of the refrigerating chamber and the independent cooling of the freezing chamber are realized, and the temperature fluctuation of the freezing chamber is reduced; aiming at different control processes during normal startup and high load, on one hand, energy consumption can be saved, on the other hand, rapid temperature reduction can be realized, and the storage quality of food is ensured; when the abnormal condition that the refrigerating chamber cannot reach a shutdown point after long-term operation occurs, the operation process is reasonably controlled, and damage and energy loss caused by long-term startup are avoided; the residual cold of the evaporator is fully utilized to control the temperature of the refrigerating chamber, so that the energy utilization rate is improved, and the defrosting and humidifying effects are achieved; through different control to different situations such as cold storage high load and freezing high load, realize energy-conservation and reduce consumption, guarantee the accurate control of temperature.

Drawings

Fig. 1 is a schematic structural view of a refrigerator according to an embodiment of the present invention;

FIG. 2 is a block schematic diagram of a control system according to an embodiment of the invention;

fig. 3 is a logic flow diagram of an operation control method of a refrigerator according to an embodiment of the present invention;

FIG. 4 is a logic flow diagram of a refrigerator in accordance with one embodiment of the present invention when performing a constant temperature mode;

FIG. 5 is a logic flow diagram of a refrigerator in accordance with one embodiment of the present invention when performing an abnormal mode;

FIG. 6 is a logic flow diagram of a refrigerator in accordance with one embodiment of the present invention when performing a high load mode;

fig. 7 is a logic flow diagram of a case where the refrigerator according to an embodiment of the present invention performs a first sub-mode of a high load mode;

fig. 8 is a logic flow diagram of a case where the refrigerator according to an embodiment of the present invention performs a second sub-mode of the high load mode;

fig. 9 is a logic flow diagram of a case where the refrigerator according to an embodiment of the present invention performs a third sub-mode of the high load mode;

fig. 10 is a logic flow diagram when a third sub-mode of a high load mode is performed by the refrigerator according to another embodiment of the present invention.

Detailed Description

The present invention will be described in detail below with reference to specific embodiments shown in the drawings. These embodiments are not intended to limit the present invention, and structural, methodological, or functional changes made by those skilled in the art according to these embodiments are included in the scope of the present invention.

Referring to fig. 1 to 2, an embodiment of the present invention provides an air-cooled refrigerator 100, the refrigerator 100 including a cabinet 10, a freezing compartment 21 and a refrigerating compartment 22 for storing articles, a refrigeration system, an evaporator compartment 40, a blower system, and a control system 60.

The freezing chamber 21 and the refrigerating chamber 22 are each defined by the cabinet 10. The storage temperature of the freezing chamber 21 is set to a freezing temperature zone for freezing storage of food items; the storage temperature of the refrigerating compartment 22 is set to a refrigerating temperature zone for refrigerating storage of food items. Of course, the refrigerator 100 may further include other storage compartments in addition to the freezing compartment 21 and the refrigerating compartment 22.

The refrigeration system is used at least to provide refrigeration to the freezer compartment 21 and the fresh food compartment 22. Specifically, the refrigeration system includes a compressor 31, a condenser, and an evaporator 32, and the compressor 31, the condenser, and the evaporator 32 communicate with each other to form a passage through which a refrigerant flows.

The compressor 31 serves to compress a refrigerant and supply the compressed refrigerant to the condenser. The evaporator 32 cools its corresponding ambient air by performing a cooling operation for absorbing ambient latent heat to cool the refrigerant supplied from the condenser. During a typical refrigeration cycle, a refrigerant (e.g., freon) may be pressurized, such as in a gaseous state, by compressor 31, and flowed through a line into the condenser, where it is condensed to a liquid state after being dissipated in heat by fins on the condenser; the liquid refrigerant then flows through the line into the evaporator 32 and vaporizes due to the pressure leaving the compressor 31, causing the air surrounding the evaporator 32 to cool; and the vaporized refrigerant is introduced into the compressor 31 again through the pipe and circulated as such.

The evaporator compartment 40 is defined by the cabinet 10 and is internally provided with the evaporator 32, and when the refrigeration system is turned on, the evaporator 32 can exchange heat with the air in the evaporator compartment 40 to form cold air in the evaporator compartment 40. In the present embodiment, the evaporator chamber 40 is adjacent to the rear of the freezing chamber 21.

The air supply system is used for conveying cold air in the evaporator chamber 40 to the refrigerating chamber 22 and/or the freezing chamber 21 and conveying air in the refrigerating chamber 22 and/or the freezing chamber 21 to the evaporator chamber 40, so that the refrigerating chamber 22 and/or the freezing chamber 21 can be cooled and cooled. Specifically, the air supply system includes a freezing air duct 51, a refrigerating air duct 52, a fan 53, a freezing damper 54, and a refrigerating damper 55.

The freezing air duct 51 is used for communicating the evaporator chamber 40 and the freezing chamber 21 and forming a passage for circulating cold air between the evaporator chamber 40 and the freezing chamber 21; the freezing damper 54 is provided at the freezing air duct 51 and opens and closes the freezing air duct 51. When the freezing air door 54 is opened, the cold air in the evaporator chamber 40 can flow into the freezing chamber 21 through the freezing air duct 51, so as to realize the cooling and cooling of the freezing chamber 21; and when the freezing damper 54 is closed, the cold air in the evaporator chamber 40 cannot flow into the freezing chamber 21 through the freezing duct 51.

The refrigerating air duct 52 is used for communicating the evaporator chamber 40 and the refrigerating chamber 22 and forming a passage for circulating cold air between the evaporator chamber 40 and the refrigerating chamber 22; the refrigerating damper 55 is provided at the refrigerating air duct 52 and opens and closes the refrigerating air duct 52. When the refrigerating air door 55 is opened, the cold air in the evaporator chamber 40 can flow into the refrigerating chamber 22 through the refrigerating air duct 52, so as to realize the cooling and cooling of the refrigerating chamber 22; when the refrigerating damper 55 is closed, the cold air in the evaporator compartment 40 cannot flow into the refrigerating compartment 22 through the refrigerating duct 52.

The blower fan 53 is provided in the evaporator chamber 40 and serves to promote the flow of air to form an air flow so that the cool air in the evaporator chamber 40 rapidly flows into the freezing air duct 51 and the refrigerating air duct 52. In the present embodiment, the fan 53 is disposed at the downstream end of the air flow of the evaporator 32, that is, when the fan 53 is turned on, the air flow passes through the evaporator 32 and exchanges heat to form cold air, and then flows into the fan 53.

Preferably, a freezing damper 54 is provided at the intersection of the freezing air duct 51 and the evaporator chamber 40 and near the blower fan 53 to reduce the influence of temperature variations in the evaporator chamber 40 on the temperature in the freezing chamber 21 and to make temperature fluctuations in the freezing chamber 21 small. Specifically, the air supply system further includes a fan shielding cover (not shown) disposed at the fan 53, the fan shielding cover has an opening corresponding to the freezing air duct 51, and the freezing damper 54 is disposed at the opening to keep or block the fan 53 from supplying air into the freezing air duct 51.

The control system 60 is respectively connected to the refrigeration system, the fan 53, the freezing damper 54, and the refrigerating damper 55, and is configured to control opening and closing of the refrigeration system, the fan 53, the freezing damper 54, and the refrigerating damper 55, so as to control an operation state of the refrigerator 100.

In the present embodiment, the operation states of the refrigerator 100 include a synchronous cooling state, a refrigerating cooling state, a freezing cooling state, a pre-cooling state, and a shutdown state.

Specifically, the synchronous cooling state is set as: the control system 60 controls the refrigeration system to be opened, the fan 53 to be opened, the freezing damper 54 to be opened and the refrigerating damper 55 to be opened. That is, when the refrigerator 100 is in the synchronous cooling state, the cooling system performs the cycle of the cooling cycle, and the air supply system simultaneously supplies cold to the freezing chamber 21 and the refrigerating chamber 22, so as to adjust the temperature of the freezing chamber 21 and the refrigerating chamber 22 at the same time and rapidly reduce the temperature.

The refrigeration state is set as follows: the control system 60 controls the refrigeration system to be opened, the fan 53 to be opened, the freezing damper 54 to be closed and the refrigerating damper 55 to be opened. That is, when the refrigerator 100 is in the refrigerating state, the refrigerating system performs the cycle of the refrigerating cycle, and the air supply system supplies cold to the refrigerating chamber 22 and does not supply cold to the freezing chamber 21, so that only the refrigerating chamber 22 is temperature-regulated, the freezing chamber 21 is not affected, and the temperature fluctuation of the freezing chamber 21 is reduced.

The freezing and refrigerating state is set as follows: the control system 60 controls the refrigeration system to be opened, the fan 53 to be opened, the freezing damper 54 to be opened and the refrigerating damper 55 to be closed. That is, when the refrigerator 100 is in the freezing and cooling state, the cooling system performs a cycle of the cooling cycle described above, and the air blowing system supplies cold to the freezing chamber 21 and does not supply cold to the refrigerating chamber 22, so that temperature adjustment of only the freezing chamber 21 is realized.

The pre-cooling state is set as: the control system 60 controls the refrigeration system to be off, the fan 53 to be on, the freezing damper 54 to be off, and the refrigerating damper 55 to be on. That is, when the refrigerator 100 is in the pre-cooling state, the refrigeration system does not perform the cycle of the refrigeration cycle, but only supplies cold to the refrigerating chamber 22 through the residual cold of the evaporator 32, so as to realize temperature adjustment of the refrigerating chamber 22, and also has the effects of energy saving, consumption reduction, defrosting and humidifying.

The shutdown state is set as: the control system 60 controls the refrigeration system to be off, the fan 53 to be off, the freezer door 54 to be closed, and the refrigerator door 55 to be closed. That is, when the refrigerator 100 is in the stopped state, the refrigeration system does not perform the cycle of the refrigeration cycle described above, and the air supply system does not supply cold to the refrigerating chamber 22 and the freezing chamber 21.

The refrigerator of this embodiment, accessible control system realizes that the refrigerator has multiple different running state to refrigerating system, fan, freezing air door, cold-stored air door's control, not only can realize the operation of refrigerator diversified to for the accurate control by temperature change of refrigerator and the realization of multiple running mode provide the basis, can reach energy-conserving loss reduction, rapid cooling and the little effect of freezer temperature fluctuation moreover.

Of course, the refrigerator 100 may further include other operation states besides the above, and when the refrigerator 100 is provided with other storage compartments, the other storage compartments may be correspondingly controlled.

Further, referring to fig. 2, the control system 60 includes a setting module 61, a temperature collecting module 62, a timing module 63, a determining module 64, and a control module 65.

The setting module 61 is configured to obtain various standard parameters of the operation of the refrigerator 100, where the standard parameters include, but are not limited to, a temperature parameter, a time parameter, a power parameter, a speed parameter, and the like.

In this embodiment, the standard parameters that the setting module 61 uses to obtain include: a first preset freezing temperature interval (Tton + T1, infinity), a second preset freezing temperature interval (Tton, Tton + T1), a third preset freezing temperature interval (Toff, Tton), a fourth preset freezing temperature interval (— infinity, Toff), and a preset freezing-on temperature interval (Tton, infinity), and a first preset refrigerating temperature interval (Tron + T2, infinity), a second preset refrigerating temperature interval (Tron, Tron + T2), a third preset refrigerating temperature interval (Troff, Tron), a fourth preset refrigerating temperature interval (— infinity, Troff), and a preset refrigerating-on temperature interval (Tron, infinity) for the refrigerating chamber 22.

Wherein the third freezing preset temperature interval (Toff, Tton) is set to a storage temperature of the freezing compartment 21 for storing the food, the third refrigerating preset temperature interval (Troff, Tron) is set to a storage temperature of the refrigerating compartment 22 for storing the food, the freezing start-up preset temperature interval (Tton, infinity) is composed of the first freezing preset temperature interval (Tton + T1, infinity) and the second freezing preset temperature interval (Tton, Tton + T1), the minimum value of the freezing start-up preset temperature interval (Tton, infinity) is smaller than the minimum value of the first freezing preset temperature interval (Tton + T1, infinity), and the refrigerating start-up preset temperature interval (Tron, infinity) is composed of the first refrigerating preset temperature interval (Tron + T2, infinity) and the second refrigerating preset temperature interval (Tron + T2), the minimum value of the refrigeration startup preset temperature interval (Tron, plus infinity) is smaller than the minimum value of the refrigeration first preset temperature interval (Tron + T2, plus infinity); and, the temperature values Tfoff, Tfon, T1, Troff, Tron, T2, etc. may be set specifically according to the requirement, for example, in one embodiment, Tfoff = -21 ℃, Tfon = -16 ℃, Troff =2 ℃, Tron =8 ℃, T1= T2=5 ℃. Of course, the expression of the temperature values Tfon + T1 and Tron + T2 is only for convenience of explaining the magnitude relationship with the corresponding Tfon and Tron, and is not limited to that the two temperature values must be obtained by setting T1 and T2 and performing corresponding operations in actual implementation.

The temperature collecting module 62 is used for collecting the temperature Tf of the freezing chamber 21 and the temperature Tr of the refrigerating chamber 22 in real time. Specifically, referring to fig. 1, temperature acquisition module 62 may include a freezing sensor 621 disposed in freezing compartment 21, freezing sensor 621 for sensing and obtaining a temperature Tf of freezing compartment 21, and a refrigerating sensor 622 disposed in refrigerating compartment 22, refrigerating sensor 622 for sensing and obtaining a temperature Tr of refrigerating compartment 22.

Of course, in other embodiments, the freezing sensor 621 and the refrigerating sensor 622 are both provided in plurality, and the temperature collecting module 62 further includes a data processing unit, and the data processing unit is configured to receive the temperature values of the freezing chamber 21 respectively sensed by the freezing sensors 621 and process the temperature values according to a preset logic to obtain the temperature Tf; the data processing unit is further configured to receive temperature values of the refrigerating compartment 22 respectively sensed by the plurality of refrigerating sensors 622 and process the plurality of temperature values according to a preset logic to obtain the temperature Tr.

The timing module 63 is used to record time, and may be specifically configured as a timer.

The determining module 64 is configured to receive the temperature Tf and the temperature Tr acquired by the temperature acquiring module 62, and determine temperature intervals corresponding to the temperature Tf and the temperature Tr respectively. For example, the determining module 64 determines whether the temperature Tf corresponds to the second preset freezing temperature interval (Tfon, Tfon + T1), that is, the determining module 64 compares the magnitudes of Tf, Tfon, and Tfon + T1, that is, if Tfon < Tf ≦ Tfon + T1, the temperature Tf corresponds to the second preset freezing temperature interval (Tfon, Tfon + T1), and if Tf ≦ Tfon or Tf > Tfon + T1, the temperature Tf does not correspond to the second preset freezing temperature interval (Tfon, Tfon + T1).

The control module 65 is connected to the setting module 61, the temperature acquisition module 62, the timing module 63 and the judgment module 64, performs information interaction with the setting module 61, the temperature acquisition module 62, the timing module 63 and the judgment module 64, and controls the opening and closing of the refrigeration system, the fan 53, the freezing air door 54 and the refrigerating air door 55.

Further, the refrigerator 100 starts to operate by turning on the power, the freezing chamber 21 is cooled to the temperature Tf corresponding to the freezing third preset temperature interval (Tfoff, Tfon), the refrigerating chamber 22 is cooled to the temperature Tr corresponding to the refrigerating third preset temperature interval (Troff, Tron), and then, under the control of the control system 60, the refrigerator 100 repeats a regular stable operation to achieve temperature regulation of the freezing chamber 21 and the refrigerating chamber 22. referring to fig. 3 to 9, the present embodiment illustrates an operation control method of the refrigerator 100, which will be described in detail below with reference to the specific structure of the refrigerator 100.

It should be noted that, in the whole operation control method, the temperature collecting module 62 collects the temperature Tf of the freezing chamber 21 and the temperature Tr of the refrigerating chamber 22 in real time, so that the control system 60 can regulate and control the temperatures of the freezing chamber 21 and the refrigerating chamber 22. That is, unless otherwise stated, the step "real-time collection of the temperature Tf of the freezing chamber 21 and the temperature Tr of the refrigerating chamber 22" is continuously performed and carried out throughout the operation control method.

Referring to fig. 3, after the operation process of the operation control method is "started", it is determined whether at least one of a first preset condition and a second preset condition is satisfied (step S101). Wherein the first preset condition is that the temperature Tr corresponds to a preset temperature interval (Tron, infinity) of the refrigeration startup, and whether the first preset condition is satisfied is determined, that is, the determining module 64 determines whether Tr > Tron is satisfied; the second preset condition is set that the temperature Tf corresponds to a preset temperature interval (Tfon, plus infinity) of the freezing start-up, and whether the second preset condition is satisfied is determined, that is, the determination module 64 determines whether Tf > Tfon is satisfied.

In step S101, when neither the first preset condition nor the second preset condition is satisfied (step S101-N), continuing to execute step S101; until when at least one of the first preset condition and the second preset condition is satisfied (step S101-Y), step S102 is performed.

It is determined whether at least one of the third preset condition and the fourth preset condition is satisfied (step S102). Wherein the third preset condition is that the temperature Tr corresponds to the first preset refrigerated temperature interval (Tron + T2, infinity), and whether the third preset condition is satisfied is determined, that is, the determination module 64 determines whether Tr > Tron + T2 is satisfied; the fourth preset condition is set that the temperature Tf corresponds to the first preset freezing temperature interval (Tfon + T1, + ∞), and it is determined whether the fourth preset condition is satisfied, i.e., the determination module 64 determines whether Tf > Tfon + T1 is satisfied.

In step S102, when neither the third preset condition nor the fourth preset condition is satisfied (step S102-N), the control module 65 controls the refrigerator 100 to execute the constant temperature mode (step S200); otherwise, when at least one of the third preset condition and the fourth preset condition is satisfied (step S102-Y), the control module 65 controls the refrigerator 100 to perform the high load mode (step S400).

According to the refrigerator and the operation control method thereof, the freezing air door and the refrigerating air door are arranged to realize the respective temperature control of the freezing chamber and the refrigerating chamber; and after the condition of starting the refrigerator is judged to be reached, judging whether the refrigerator is in high load or not, realizing different temperature control between the high load of the refrigerator and the normal starting (namely a constant temperature mode), not only realizing small temperature fluctuation of the freezing chamber, but also realizing energy conservation, consumption reduction and rapid temperature reduction, and avoiding the adverse effect of temperature fluctuation or long-term high temperature on the storage quality of food.

Further, in the constant temperature mode (step S200), the control system 60 controls the refrigerator 100 to alternately enter the refrigerating and cooling state and the freezing and cooling state, that is, in the constant temperature mode, the refrigerating chamber 22 and the freezing chamber 21 are not simultaneously cooled. Referring to fig. 4, a specific operation control method of the refrigerator 100 in the constant temperature mode (step S200) is illustrated.

The determination module 64 determines whether the temperature Tr corresponds to the fourth preset refrigerating temperature range (-infinity, Troff) (step S201), that is, whether Tr ≦ Troff is determined, thereby determining whether the refrigerating compartment 22 reaches a refrigerating shutdown point to determine whether cooling of the refrigerating compartment 22 is required.

In step S201, when Tr ≦ Troff (step S201-Y), the control module 65 controls the refrigerator 100 to enter the freezing and cooling state (step S202), thereby cooling only the freezing chamber 21; when Tr > Troff (step S201-N), the control module 65 controls the refrigerator 100 to enter the refrigerating and cooling state and the timing module 63 synchronously counts the time t for which the refrigerator 100 is in the refrigerating and cooling state (step S203). In step 203, the time t is counted from the new time every time the refrigerator 100 is switched from the other operation state to the refrigerating and cooling state, and the time t is cleared when the refrigerator 100 is switched from the refrigerating and cooling state to the other operation state.

One of the prerequisites for the refrigerator to perform the constant temperature mode (step S200) is: at least one of Tr > Tron and Tf > Tson is true, i.e., when at least one of the freezer compartment and the refrigerator compartment has reached a start-up condition. In the constant temperature mode, step S201 is executed, when Tr is less than or equal to Troff, the refrigerating chamber is directly cooled without cooling the refrigerating chamber, when Tr is greater than Troff, the refrigerating chamber is cooled first, so that on one hand, the influence on the temperature of the refrigerating chamber can be avoided when the refrigerating chamber is cooled, on the other hand, the refrigerating chamber is preferentially cooled as long as the refrigerating chamber is not below a refrigerating and power-off point when the refrigerator is started, and therefore the starting times and the cold loss are reduced.

Further, when Tr > Troff (steps S201-N), the control module 65 controls the refrigerator 100 to enter the refrigerating and cooling state and the timing module 63 synchronously counts the time t for which the refrigerator 100 is in the refrigerating and cooling state (step S203) (the control of step S202 is executed when the determination of step S201 is Y, which will be described later), the refrigerating chamber 22 is cooled alone without cooling the freezing chamber 21, and the influence on the temperature of the freezing chamber 21 is reduced.

As the refrigerating state continues, the temperature Tr of the refrigerating compartment 22 continuously decreases, and the determination module 64 determines whether the temperature Tr corresponds to the fourth preset refrigerating temperature range (— infinity, Troff) (step S207), that is, whether Tr is less than or equal to Troff, thereby determining whether the refrigerating compartment 22 reaches a refrigerating shutdown point.

In step S207, when Tr ≦ Troff (step S207-Y), step S202 is executed (similarly, the execution of the control of step S202 will be described later); when Tr > Troff (step S207-N), the judgment module 64 judges whether the time t reaches a first preset time t1 (step S208). The first preset time t1 is collected by the setting module 61, and in this embodiment, the first preset time t1=10 min.

In step S208, when t < t1 (step S208-N), refrigerator 100 continues to maintain the refrigerating state to cool refrigerating compartment 22, and determination module 64 continues to determine whether temperature Tr corresponds to the fourth preset refrigerating temperature interval (-infinity, Troff) (step S207), and when t ≧ t1 (step S208-Y), i.e., the refrigerating state continues for the first preset time t1, and refrigerating compartment 22 has not yet reached the refrigerating shutdown point, control module 65 controls refrigerator 100 to execute the abnormal mode (step S300).

Therefore, once the refrigerator has the condition that the refrigerating chamber still cannot reach the preset temperature after being refrigerated for a long time, for example, the door of the refrigerating chamber is not closed tightly, the abnormal mode of the refrigerator is controlled, so that the damage of the refrigerating system caused by long-term operation is avoided, and the energy loss is also reduced.

Of course, the sequence of step S207 and step S208 is not limited to this embodiment. That is, in summary, the portions of steps S203-S207-S202-S208-S300 of the operation control method are actually: the control module 65 controls the refrigerator 100 to maintain the refrigerating and cooling state until: the time-controlled ice-making box 100 performs the abnormal mode when the temperature Tr does not correspond to the refrigerated fourth preset temperature section (— ∞, Troff) all the time during the time t reaches the first preset time t1, or the ice-making box 100 enters the freezing and refrigerating state when the temperature Tr has corresponded to the refrigerated fourth preset temperature section (— ∞, Troff) before the time t reaches the first preset time t 1.

Further, in the present embodiment, when Tr ≦ Troff (steps S201-Y or S207-Y), the control module 65 controls the refrigerator 100 to enter the freezing and cooling state (step S202), in which the temperature Tf of the freezing compartment 21 continues to decrease as the freezing and cooling state continues; the determination module 64 determines whether the temperature Tf corresponds to the fourth preset freezing temperature range (— infinity, Tfoff) (step S204), that is, whether Tf is greater than or equal to Tfoff, thereby determining whether the freezing chamber 21 reaches the freezing shutdown point.

In step S204, if Tf is less than or equal to Tff (step S204-N), the determining module 64 determines whether the temperature Tr corresponds to the preset refrigerating power-on temperature interval (Tron, plus and minus) (step S206), that is, whether the refrigerating compartment 22 reaches the refrigerating power-on point. In step S206, if Tr is less than or equal to Tron (step S206-N), returning to step S204; if Tr > Tron (step S206-Y), step S203 is executed, that is, the control module 65 controls the refrigerator 100 to re-enter the refrigerating and cooling state and the timing module 63 re-synchronously counts the time t when the refrigerator 100 is in the refrigerating and cooling state (step S203).

In step S204, if Tf ≦ Tff is true (step S204-Y), the control module 65 controls the refrigerator 100 to enter the shutdown state (step S205), thereby ending the present operation.

According to the refrigerator and the operation control method thereof, the priority that the temperature Tr of the refrigerating chamber meets (Troff, Tron) is higher than the priority that the temperature Tf of the freezing chamber meets (Tff ), so that the fluctuation of the temperature of the freezing chamber is small when the refrigerating chamber is refrigerated, the temperature of the refrigerating chamber is kept constant, the phenomenon that the temperature is easy to fluctuate due to more times of opening and closing the door of the refrigerating chamber is avoided, the storage environment of the refrigerating chamber is improved, in addition, the continuous starting caused by the refrigeration of the refrigerating chamber for a long time can be avoided, the damage probability of the refrigerator is reduced, the energy is saved, and the consumption is.

Further, as described above, when the refrigerating chamber 22 does not reach the refrigerating shutdown point after the refrigerating state is maintained for the first preset time t1, the control module 65 controls the refrigerator 100 to execute the abnormal mode (step S300), and referring to fig. 5, the embodiment illustrates a specific operation control method of the refrigerator 100 in the abnormal mode (step S300).

Specifically, the control module 65 controls the refrigerator 100 to enter the synchronous cooling state (step S301), that is, to simultaneously supply cooling to the freezing chamber 21 and the refrigerating chamber 22. In the abnormal mode, the determination module 64 does not determine the temperature section corresponding to the temperature Tr any more, but only determines whether the temperature Tf corresponds to the fourth preset freezing temperature section (— ∞, Tfoff) (step S302).

In step S302, if Tf > Tff (step S302-N), the refrigerator 100 maintains the synchronous cooling state and continues to execute step S302 until Tf is smaller than or equal to Tff (step S302-Y), the control module 65 controls the refrigerator 100 to enter the shutdown state (step S303), thereby ending the present operation.

Further, in the high load mode (step S400), the control system 60 may control the refrigerator 100 to be in the synchronous cooling state, that is, in the high load mode, the refrigerating chamber 22 and the freezing chamber 21 may be simultaneously cooled. Referring to fig. 6, in the present embodiment, the high load mode includes three different sub-modes based on the difference in the determination result in step S102-Y, and the operation control method in the high load mode will be described below.

Specifically, in step S102, if the third preset condition is satisfied and the fourth preset condition is not satisfied, that is, Tr > Tron + T2 and Tf ≦ Tfon + T1, when the refrigerating compartment 22 is highly loaded and the freezing compartment 21 is not highly loaded, the control module 65 controls the refrigerator 100 to execute the first sub-mode of the high load mode (step S500).

If the third preset condition is not satisfied and the fourth preset condition is satisfied, that is, Tr is not greater than Tron + T2 and Tf is greater than Tfon + T1, and at this time, the refrigerating compartment 22 is not highly loaded and the freezing compartment 21 is highly loaded, the control module 65 controls the refrigerator 100 to execute the second sub-mode of the high-load mode (step S600).

If the third preset condition and the fourth preset condition are both satisfied, that is, Tr > Tron + T2 and Tf > Tfon + T1, and both the refrigerating compartment 22 and the freezing compartment 21 are highly loaded, the control module 65 controls the refrigerator 100 to perform the third sub-mode of the high-load mode (step S700).

The refrigerator and the operation control method thereof in the embodiment perform different controls when the refrigerating chamber and the freezing chamber are respectively in high load, thereby reducing the influence on the temperature of the freezing chamber when the refrigerating chamber is in high load, avoiding the prolonging of the starting time of a refrigerating system caused by the fact that the temperature of the freezing chamber is increased by high-temperature gas in the refrigerating chamber, saving energy and reducing consumption; and when the freezing chamber is in high load, the temperature can be quickly reduced, and the adverse effect of overlong high-temperature environment on the quality of stored food is avoided.

Next, the operation control method of the first sub-mode (step S500), the second sub-mode (step S600), and the third sub-mode (step S700) will be described with reference to fig. 7, 8, and 9, respectively.

Specifically, in step S102, when Tr > Tron + T2 and Tf ≦ Tton + T1, the control module 65 controls the refrigerator 100 to execute the first sub-mode, referring to FIG. 7, which illustrates a specific operation control method of the first sub-mode of the present embodiment.

The control module 65 controls the refrigerator 100 to enter the refrigerating and cooling state (step S501), and at this time, the temperature Tr of the refrigerating chamber 22 continuously decreases along with the continuation of the refrigerating and cooling state, in the process, the temperature Tr of the refrigerating chamber 22 can be quickly reduced, and the high-temperature gas in the refrigerating chamber 22 does not influence the freezing chamber 21.

The determination module 64 determines whether the temperature Tr corresponds to the fourth preset refrigerating temperature range (-infinity, Troff) (step S502), i.e., whether Troff is established or not, thereby determining whether the refrigerating compartment 22 reaches a refrigerating shutdown point or not.

In step S502, if Tr is less than or equal to Troff (step S502-Y), the control module 65 controls the refrigerator 100 to enter the shutdown state (step S503), thereby ending the operation process this time; if Tr > Troff (step S502-N), the determination module 64 determines whether the temperature Tf corresponds to the preset freezing start-up temperature interval (Tton, + ∞) (step S504). Therefore, the temperature rising condition of the freezing chamber can be monitored in real time before the refrigerating chamber reaches the refrigerating shutdown point, and the condition that the refrigerating chamber is shut down after continuous cold supply is carried out on the refrigerating chamber blindly and the refrigerating chamber is repeatedly started after the temperature rises in the process is avoided.

In step S504, if Tf is less than or equal to Tfon (step S504-N), the refrigerator 100 continues to maintain the refrigerating state and the determining module 64 continues to determine whether the temperature Tr corresponds to the fourth preset refrigerating temperature range (— infinity, Troff) (step S502), otherwise, if Tf is greater than Tfon (step S504-Y), that is, the freezing compartment 21 reaches the freezing start point, and the refrigerating compartment 22 does not reach the refrigerating shut-off point yet, the control module 65 controls the refrigerator 100 to enter the synchronous refrigerating state (step S505) to simultaneously supply cold to the refrigerating compartment 22 and the freezing compartment 21.

As the synchronous cooling state continues, the temperature Tr of refrigerating compartment 22 and the temperature Tf of freezing compartment 21 both continue to decrease, and in this process, the determination module 64 determines whether the temperature Tf corresponds to the freezing fourth preset temperature interval (— infinity, Tfoff) (step S506).

In step S506, if Tf is not greater than Tff (step S506-Y), the process returns to step S501; otherwise (step S506-N), the determination module 64 continues to perform step S506.

According to the refrigerator and the operation control method thereof, when the refrigerating chamber is in high load but the freezing chamber is not in high load, the refrigerating chamber is cooled firstly to rapidly reduce the temperature of the refrigerating chamber, meanwhile, the influence of high-temperature gas in the refrigerating chamber on the temperature of the freezing chamber is avoided, the temperature rise condition of the freezing chamber is monitored, a synchronous refrigerating state is timely started, repeated starting is avoided, and energy consumption is saved.

Further, in step S102, when Tr ≦ Tron + T2 and Tf > Tfo + T1, the control module 65 controls the refrigerator 100 to enter the second sub-mode (step S600), referring to FIG. 8, which illustrates a specific operation control method of the second sub-mode of the present embodiment.

The control module 65 controls the refrigerator 100 to enter the freezing and refrigerating state (step S601), and at this time, along with the continuation of the freezing and refrigerating state, the temperature Tf of the freezing chamber 21 is continuously reduced, and only the freezing chamber 21 is cooled in the process, so that the space volume required to be cooled is effectively limited, and the temperature Tf of the freezing chamber 21 can be quickly reduced.

The determination module 64 determines whether the temperature Tf corresponds to the fourth preset freezing temperature range (— infinity, Tfoff) (step S602), that is, whether Tf is greater than or equal to Tfoff, thereby determining whether the freezing chamber 21 reaches the freezing shutdown point.

In step S602, if Tf is less than or equal to Tff (step S602-Y), the control module 65 controls the refrigerator 100 to enter the shutdown state (step S603), thereby ending the present operation; if Tf > Tff (step S602-N), the determination module 64 determines whether the temperature Tr corresponds to the preset refrigeration-on temperature interval (Tron, + ∞) (step S604). Therefore, the temperature rising condition of the refrigerating chamber can be monitored in real time before the freezing chamber reaches the freezing shutdown point, and the condition that the freezing chamber is shut down after continuous cold supply is carried out on the freezing chamber blindly and the refrigerating chamber is repeatedly started after the temperature rises in the process is avoided.

In step S604, if Tr is less than or equal to Tron (step S604-N), the refrigerator 100 continues to maintain the freezing and refrigerating state, and the determining module 64 continues to determine whether the temperature Tf corresponds to the fourth preset freezing temperature range (— infinity, Tfoff) (step S602), otherwise, if Tr > Tron (step S604-Y), that is, the refrigerating chamber 22 reaches the refrigerating start point, and the freezing chamber 21 does not reach the freezing shut-off point, the control module 65 controls the refrigerator 100 to enter the synchronous refrigerating state (step S605) to simultaneously supply cold to the refrigerating chamber 22 and the freezing chamber 21.

While the temperature Tr of the refrigerating compartment 22 and the temperature Tf of the freezing compartment 21 are both continuously decreased as the synchronous cooling state continues, the determination module 64 determines whether the temperature Tr corresponds to the fourth preset refrigerating temperature interval (— infinity, Troff) (step S606).

In step S606, if Tr ≦ Troff (step S606-Y), return is made to step S601; otherwise (step S606-N), the determination module 64 continues to execute step S606.

According to the refrigerator and the operation control method thereof, when the freezing chamber is in high load but the refrigerating chamber is not in high load, only the freezing chamber is cooled firstly to rapidly reduce the temperature of the freezing chamber, so that the phenomenon that the cooling rate of the freezing chamber is slowed down due to cooling of the refrigerating chamber at the same time is avoided, and the storage time of food in a high-temperature environment is shortened; meanwhile, the temperature rising condition of the refrigerating chamber is monitored, and the refrigerating chamber enters a synchronous refrigerating state in due time, so that repeated starting is avoided, and energy consumption is saved.

Further, in step S102, when Tr > Tron + T2 and Tf > Tfon + T1, the control module 65 controls the refrigerator 100 to enter the third sub-mode (step S700), which is illustrated in fig. 9, which shows a specific operation control method of the third sub-mode of the present embodiment.

The control module 65 controls the refrigerator 100 to enter the synchronous cooling state (step S701), and simultaneously supplies cooling to the freezing chamber 21 and the refrigerating chamber 22 to achieve rapid cooling of the freezing chamber 21 and the refrigerating chamber 22.

As the synchronous cooling state continues, the determination module 64 sequentially determines whether the temperature Tf corresponds to the fourth preset freezing temperature interval (— infinity, Tfoff) (step S702) and whether the temperature Tr corresponds to the fourth preset refrigerating temperature interval (— infinity, trooff) (steps S7031 and S7032).

When Tf is greater than Tfoff (step S702-N) and Tr is greater than Troff (step S7032-N), the refrigerator 100 continues to maintain the synchronous cooling state, and the determination module 64 continues to determine the temperature interval corresponding to the temperature Tf and the temperature Tr; when Tf > Tff (step S702-N) and Tr ≦ Troff (step S7032-Y), the control module 65 controls the refrigerator 100 to enter the freezer cold state (step S704); when Tf is not less than Tff (step S702-Y) and Tr is not less than Troff (step S7031-Y), the control module 65 controls the refrigerator 100 to enter the shutdown state (step S706), thereby ending the present operation; when Tf ≦ Tff (steps S702-Y) and Tr > Troff (step S7031-N), the control module 65 controls the refrigerator 100 to cool only the refrigerating compartment 22 (control in this case will be described later).

First, specifically, when Tf > Tff (step S702-N) and Tr ≦ Troff (step S7032-Y), at which the freezing compartment 21 has not reached the freeze shutdown point and the refrigerating compartment 22 has reached the refrigerator shutdown point, the control module 65 controls the refrigerator 100 to enter the freeze cooling state (step S704) to supply cold only to the freezing compartment 21.

As the freezing and cooling state continues, the temperature Tf of the freezing chamber 21 continues to decrease, and the determining module 64 determines whether the temperature Tf corresponds to the freezing fourth preset temperature interval (— infinity, Tfoff) (step S705). if not (step S705-N), the refrigerator 100 maintains the freezing and cooling state, and the determining module 64 continues to execute step S705, until Tf is less than or equal to Tfoff (step S705-Y), the control module 65 controls the refrigerator 100 to enter the shutdown state (step S706), thereby ending the operation process of this time.

Further, when Tf ≦ Tff (steps S702-Y) and Tr > Troff (step S7031-N), the control module 65 controls the refrigerator 100 to cool only the fresh food compartment 22.

Specifically, the control module 65 controls the refrigerator 100 to enter the pre-cooling state, and the timing module 63 synchronously counts the time t' (step S707) when the refrigerator 100 is in the pre-cooling state, and in step S707, the refrigeration system is not turned on, and only the residual cold of the evaporator 32 is used for cooling the refrigerating chamber 22, so that on one hand, energy is saved, consumption is reduced, and on the other hand, the effects of defrosting and humidifying can be achieved. In step 707, the time t 'is counted from the new time every time the refrigerator 100 is switched from the other operation state to the pre-cooling state, and the time t' is cleared when the refrigerator 100 is switched from the pre-cooling state to the other operation state.

As the precooling state continues, the temperature Tr of the refrigerating compartment 22 decreases by a proper amount, and the determining module 64 determines whether the temperature Tr corresponds to the fourth preset refrigerating temperature interval (— ∞, Troff) (step S708), that is, whether Tr is less than or equal to Troff, so as to determine whether the refrigerating compartment 22 reaches a refrigerating shutdown point.

In step S708, if Tr is less than or equal to Troff (step S708-Y), the control module 65 controls the refrigerator 100 to enter the shutdown state (step S706), thereby ending the present operation process; if Tr > Troff (step S708-N), the determining module 64 determines whether the time t' reaches a second preset time t2 (step S709). Wherein the second preset time t2 is acquired and obtained by the preset module 61, and t2=10 min.

In step S709, when t '< t2 (step S709-N), the refrigerator 100 continues to maintain the pre-cooling state to cool the refrigerating compartment 22, and the determining module 64 continues to determine whether the temperature Tr corresponds to the fourth preset refrigerating temperature interval (— infinity, Troff) (step S708), and when t' ≧ t2 (step S709-Y), i.e., the pre-cooling state continues for the second preset time t2, and the refrigerating compartment 22 still does not reach the refrigerating shutdown point, at this time, the control module 65 controls the refrigerator 100 to enter the refrigerating and cooling state (step S710) to further increase the cooling capacity to rapidly cool the refrigerating compartment 22.

According to the refrigerator and the operation control method thereof, by setting the precooling state, when the freezing chamber reaches a freezing shutdown point and the refrigerating chamber does not reach a refrigerating shutdown point, the refrigerating system is stopped, and the refrigerating chamber is cooled by using the residual cold of the evaporator, so that the utilization rate of the cold energy of the evaporator is increased, preliminary defrosting and humidifying can be realized, and the effects of energy conservation and consumption reduction are effectively achieved.

Of course, the sequence of step S708 and step S709 is not limited to this embodiment. That is, in summary, the steps S707-S708-S709-S710-S706 of the operation control method are actually: the control module 65 controls the refrigerator 100 to maintain the pre-cooling state until: the ice making box 100 is controlled to enter the refrigerating and cooling state when the temperature Tr does not correspond to the refrigerating fourth preset temperature interval (— infinity, Troff) all the time during the time t 'reaches the second preset time t2, or the ice making box 100 is controlled to enter the shutdown state when the temperature Tr has corresponded to the refrigerating fourth preset temperature interval (— ∞, Troff) before the time t' reaches the second preset time t 2.

Further, when the control module 65 controls the refrigerator 100 to be in the refrigerating and cooling state (step S710), at which the temperature Tr of the refrigerating compartment 22 continuously decreases as the refrigerating and cooling state continues, the determination module 64 determines whether the temperature Tr corresponds to the fourth preset refrigerating temperature interval (— infinity, Troff) (step S711), that is, whether Tr ≦ Troff is established, thereby determining whether the refrigerating compartment 22 reaches a refrigerating shutdown point.

In step S711, if Tr is less than or equal to Troff (step S711-Y), the control module 65 controls the refrigerator 100 to enter the shutdown state (step S706), thereby ending the present operation process; if Tr > Troff (step S711-N), the determination module 64 determines whether the temperature Tf corresponds to the preset freezing start-up temperature interval (Tton, + ∞) (step S712).

In step S712, if Tf is less than Tfon (step S712-N), the refrigerator 100 continues to maintain the refrigerating state, and the determining module 64 continues to determine whether the temperature Tr corresponds to the fourth preset refrigerating temperature range (— infinity, Troff) (step S711), and if Tf is greater than Tfon (step S712-Y), that is, the freezing chamber 21 reaches the freezing start point, and the refrigerating chamber 22 does not reach the refrigerating shut-off point at this time, the process returns to step S701, and the control module 65 controls the refrigerator 100 to reenter the synchronous refrigerating state to simultaneously supply cold to the refrigerating chamber 22 and the freezing chamber 21.

According to the refrigerator and the operation control method thereof, when the refrigerating chamber and the freezing chamber are both in high load, the refrigerator enters the synchronous refrigerating state so as to realize rapid cooling of the freezing chamber and the refrigerating chamber; and in a precooling state, the cold storage chamber is cooled by using the residual cold of the evaporator, so that the utilization rate of the cold energy of the evaporator is increased, preliminary defrosting and humidifying can be realized, and the effects of energy conservation and consumption reduction are effectively achieved.

In addition, the present application also provides another embodiment different from the above-mentioned embodiment, and referring to fig. 10, the embodiment is different from the previous embodiment only in that: the refrigerating chamber 22 has a smaller capacity than the freezing chamber 21, and the operation control method of the third sub-mode of the high load mode is different. The embodiment will be described below with respect to the difference, and for the introduction of other structures and operation control methods, please refer to the previous embodiment, which is not described again.

Specifically, in step S102, when Tr > Tron + T2 and Tf > Tfon + T1, the refrigerator 100 is controlled to enter the third sub-mode (step S700).

The control module 65 controls the refrigerator 100 to enter the synchronous cooling state (step S801), and simultaneously supplies cooling to the freezing chamber 21 and the refrigerating chamber 22 to achieve rapid cooling of the freezing chamber 21 and the refrigerating chamber 22. With the continuation of the synchronous cooling state, the determination module 64 determines whether the temperature Tr corresponds to the fourth preset refrigerating temperature range (-infinity, Troff) (step S802), that is, whether Tr ≦ Troff is established, to determine whether the refrigerating compartment 22 reaches a refrigerating shutdown point.

In step S802, if Tr > Troff (step S802-N), the determination module 64 continues to execute step S802; if Tr is less than or equal to Troff (step S802-Y), the control module 65 controls the refrigerator 100 to enter the freezing and cooling state (step S803).

When the refrigerator 100 is in the freezing and refrigerating state, the temperature Tf of the freezing chamber 21 continues to decrease; the determination module 64 determines whether the temperature Tf corresponds to the fourth preset freezing temperature range (— infinity, Tfoff) (step S804), that is, whether Tf is greater than or equal to Tfoff, thereby determining whether the freezing chamber 21 reaches the freezing shutdown point.

In step S804, if Tf is less than or equal to Tfoff (step S804-Y), the control module 65 controls the refrigerator 100 to enter the shutdown state (step S806), thereby ending the operation process; if Tf > Tff (step S804-N), the determination module 64 determines whether the temperature Tr corresponds to the preset refrigeration startup temperature interval (Tron, + ∞) (step S805). Therefore, the temperature rising condition of the refrigerating chamber can be monitored in real time before the freezing chamber reaches the freezing shutdown point, and the condition that the freezing chamber is shut down after continuous cold supply is carried out on the freezing chamber blindly and the refrigerating chamber is repeatedly started after the temperature rises in the process is avoided.

In step S805, if Tr is less than or equal to Tron (step S805-N), the refrigerator 100 continues to maintain the freezing and cooling state, and the determining module 64 continues to determine whether the temperature Tf corresponds to the fourth preset freezing temperature interval (— ∞, Tfoff) (step S804), and if Tr > Tron (step S805-Y), that is, the refrigerating chamber 22 reaches the refrigerating start point, and the freezing chamber 21 does not reach the freezing shut-off point at this time, the control module 65 returns to step S801, and controls the refrigerator 100 to reenter the synchronous cooling state.

In conclusion, the beneficial effects of the invention are as follows: the independent cooling of the refrigerating chamber and the independent cooling of the freezing chamber are realized, and the temperature fluctuation of the freezing chamber is reduced; aiming at different control processes during normal startup and high load, on one hand, energy consumption can be saved, on the other hand, rapid temperature reduction can be realized, and the storage quality of food is ensured; when the refrigerating chamber cannot reach a shutdown point after long-term operation, the operation process is reasonably controlled, and damage and energy loss caused by long-term startup are avoided; the residual cold of the evaporator is fully utilized to control the temperature of the refrigerating chamber, so that the energy utilization rate is improved, and the defrosting and humidifying effects are achieved; through different control to different situations such as cold storage high load and freezing high load, realize energy-conservation and reduce consumption, guarantee the accurate control of temperature.

It should be understood that although the present description refers to embodiments, not every embodiment contains only a single technical solution, and such description is for clarity only, and those skilled in the art should make the description as a whole, and the technical solutions in the embodiments can also be combined appropriately to form other embodiments understood by those skilled in the art.

The detailed description set forth above is merely a specific description of possible embodiments of the present invention and is not intended to limit the scope of the invention, which is intended to include within the scope of the invention equivalent embodiments or modifications that do not depart from the technical spirit of the present invention.

Claims

1. An air-cooled refrigerator, characterized in that the refrigerator comprises,

a control system for: the method comprises the steps of collecting the temperature Tr of a refrigerating chamber and the temperature Tf of a freezing chamber in real time, and obtaining a refrigerating first preset temperature interval and a freezing first preset temperature interval, wherein the minimum value of the refrigerating first preset temperature interval is larger than that of a refrigerating starting preset temperature interval, and the minimum value of the freezing first preset temperature interval is larger than that of a freezing starting preset temperature interval; and when the temperature Tr corresponds to the refrigerated first preset temperature interval and the temperature Tf does not correspond to the refrigerated first preset temperature interval, controlling the refrigerator to execute a first sub-mode of a high-load mode, wherein in the first sub-mode, the refrigerator is controlled to enter a refrigerated refrigeration state, and when the refrigerating chamber does not correspond to a refrigerated fourth preset temperature interval and the freezing chamber corresponds to a refrigerated starting preset temperature interval, the ice making box enters a synchronous refrigeration state; and when the temperature Tr does not correspond to the refrigerated first preset temperature interval and the temperature Tf corresponds to the refrigerated first preset temperature interval, controlling the refrigerator to execute a second sub-mode of the high-load mode, wherein in the second sub-mode, the refrigerator is firstly controlled to enter a refrigerated refrigeration state, and when the freezing chamber does not correspond to a refrigerated fourth preset temperature interval and the refrigerating chamber corresponds to a refrigerated starting preset temperature interval, the ice making box enters a synchronous refrigeration state;

when the temperature Tr corresponds to the refrigerated first preset temperature interval and the temperature Tf corresponds to the refrigerated first preset temperature interval, controlling the refrigeration system to be opened, the fan to be opened, the refrigerating air door to be opened and the freezing air door to be opened so as to enable the refrigerator to enter a synchronous refrigeration state; and sequentially judging whether the temperature Tf corresponds to a fourth freezing preset temperature interval and whether the temperature Tr corresponds to a fourth refrigerating preset temperature interval in the synchronous refrigerating state; when the temperature Tf corresponds to the fourth freezing preset temperature interval and the temperature Tr does not correspond to the fourth refrigerating preset temperature interval, controlling the refrigeration system to be closed, the fan to be opened, the refrigerating air door to be opened and the freezing air door to be closed so that the refrigerator enters a precooling state from the synchronous refrigeration state;

the control system is further configured to: when the refrigerator enters the precooling state, synchronously counting the time t' of the refrigerator in the precooling state; and when the temperature Tr does not correspond to the fourth refrigeration preset temperature interval all the time in the process that the time t' reaches a second preset time t2, controlling the refrigeration system to be opened, the fan to be opened, the refrigeration air door to be opened and the freezing air door to be closed so that the refrigerator enters a refrigeration state from the precooling state.

2. The air-cooled refrigerator of claim 1, wherein the control system is further configured to: and when the temperature Tr corresponds to a fourth preset temperature interval before the time t' reaches a second preset time t2, controlling the refrigeration system to be closed, the fan to be closed, the cold storage air door to be closed and the freezing air door to be closed so as to enable the refrigerator to enter a shutdown state from the precooling state.

3. The air-cooled refrigerator of claim 2 wherein the control system is further configured to: and when the refrigerator is in the refrigerating state, if the temperature Tr does not correspond to the fourth refrigerating preset temperature interval and the temperature Tf corresponds to the freezing starting preset temperature interval, controlling the refrigerator to reenter the synchronous refrigerating state.

4. An operation control method of an air-cooled refrigerator is characterized by comprising the following steps:

the method comprises the steps of collecting the temperature Tr of a refrigerating chamber and the temperature Tf of a freezing chamber in real time, and obtaining a refrigerating first preset temperature interval and a freezing first preset temperature interval, wherein the minimum value of the refrigerating first preset temperature interval is larger than that of a refrigerating starting preset temperature interval, and the minimum value of the freezing first preset temperature interval is larger than that of a freezing starting preset temperature interval;

when the temperature Tr corresponds to the refrigerated first preset temperature interval and the temperature Tf does not correspond to the frozen first preset temperature interval, controlling the refrigerator to execute a first sub-mode of a high-load mode, wherein in the first sub-mode, the refrigerator is controlled to enter a refrigerated refrigeration state, and when the refrigerating chamber does not correspond to a refrigerated fourth preset temperature interval and the freezing chamber corresponds to a frozen starting preset temperature interval, the ice making box enters a synchronous refrigeration state;

when the temperature Tr does not correspond to the refrigerated first preset temperature interval and the temperature Tf corresponds to the refrigerated first preset temperature interval, controlling the refrigerator to execute a second sub-mode of the high-load mode, wherein in the second sub-mode, the refrigerator is controlled to enter a refrigerated refrigeration state, and the ice making box enters a synchronous refrigeration state when the freezing chamber does not correspond to a refrigerated fourth preset temperature interval and the refrigerating chamber corresponds to a refrigerated starting preset temperature interval;

when the temperature Tr corresponds to the refrigerated first preset temperature interval and the temperature Tf corresponds to the frozen first preset temperature interval, controlling the refrigerator to enter a synchronous refrigerating state; wherein the synchronous cooling state is set as: starting a refrigerating system, a fan, a refrigerating air door and a freezing air door;

sequentially judging whether the temperature Tf corresponds to a fourth freezing preset temperature interval and whether the temperature Tr corresponds to a fourth refrigerating preset temperature interval in the synchronous refrigerating state;

when the temperature Tf corresponds to the fourth freezing preset temperature interval and the temperature Tr does not correspond to the fourth refrigerating preset temperature interval, controlling the refrigerator to enter a precooling state from the synchronous refrigerating state; wherein the pre-cooling state is set to: closing a refrigerating system, opening a fan, opening a refrigerating air door and closing a freezing air door;

when the temperature Tr does not correspond to the fourth preset refrigeration temperature interval all the time in the process that the time t' reaches a second preset time t2, controlling the refrigerator to enter a refrigeration state from the precooling state; wherein the refrigeration state is set as: the refrigeration system is started, the fan is started, the refrigeration air door is opened, and the freezing air door is closed.

5. The operation control method of the air-cooled refrigerator according to claim 4, further comprising the steps of:

when the temperature Tr corresponds to a fourth preset temperature interval before the time t' reaches a second preset time t2, controlling the refrigerator to enter a shutdown state from the precooling state; wherein the shutdown state is set to: the refrigeration system is closed, the fan is closed, the refrigeration air door is closed, and the freezing air door is closed.

6. The operation control method of the air-cooled refrigerator according to claim 5, further comprising the steps of: