CN111795541A

CN111795541A - Refrigerator control method and device, refrigerator, storage medium and processor

Info

Publication number: CN111795541A
Application number: CN202010590173.9A
Authority: CN
Inventors: 吴婉玥
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2020-06-24
Filing date: 2020-06-24
Publication date: 2020-10-20
Anticipated expiration: 2040-06-24
Also published as: CN111795541B

Abstract

The invention discloses a control method and a control device for a refrigerator, the refrigerator, a storage medium and a processor, wherein the method comprises the following steps: under the condition that a request for cooling the first compartment and the second compartment simultaneously is received, determining a first temperature difference between the current temperature of the first compartment and the stop point temperature of the first compartment, and determining a second temperature difference between the current temperature of the second compartment and the stop point temperature of the second compartment; determining a magnitude relationship between the first temperature difference and the second temperature difference; and controlling the first compartment and the second compartment to refrigerate according to the magnitude relation between the first temperature difference and the second temperature difference. The scheme of the invention can solve the problem of unbalanced refrigeration when the two chambers refrigerate simultaneously, and achieve the effect of balanced refrigeration when the two chambers refrigerate simultaneously.

Description

Refrigerator control method and device, refrigerator, storage medium and processor

Technical Field

The invention belongs to the technical field of refrigerators, particularly relates to a control method and device of a refrigerator, the refrigerator, a storage medium and a processor, and particularly relates to a refrigeration control method and device of the refrigerator, the storage medium and the processor.

Background

Some direct-cooling multi-cycle refrigerators use: the valve controls the flow direction of the refrigerant, thereby controlling the refrigeration system of different chambers. With the widespread use of this system, a more general problem has also been found: when two compartments (e.g., a freezing compartment and a variable temperature compartment) have simultaneous requests for cooling, both compartments are cooled, but the cooling balance is poor.

The above is only for the purpose of assisting understanding of the technical aspects of the present invention, and does not represent an admission that the above is prior art.

Disclosure of Invention

The present invention aims to solve the above-mentioned drawbacks, and to provide a method and an apparatus for controlling a refrigerator, a storage medium, and a processor, so as to solve the problem of unbalanced refrigeration when two compartments are cooled simultaneously, and achieve the effect of balanced refrigeration when two compartments are cooled simultaneously.

The invention provides a control method of a refrigerator, wherein a first compartment evaporator and a second compartment evaporator of the refrigerator are connected in parallel, and the first compartment evaporator and a third compartment evaporator are connected in series; the control method of the refrigerator comprises the following steps: under the condition that a request for cooling the first compartment and the second compartment simultaneously is received, determining a first temperature difference between the current temperature of the first compartment and the stop point temperature of the first compartment, and determining a second temperature difference between the current temperature of the second compartment and the stop point temperature of the second compartment; determining a magnitude relationship between the first temperature difference and the second temperature difference; and controlling the first compartment and the second compartment to refrigerate according to the magnitude relation between the first temperature difference and the second temperature difference.

Optionally, controlling the first compartment and the second compartment to perform refrigeration comprises: if the first temperature difference is not equal to the second temperature difference, preferentially refrigerating the compartment corresponding to the larger one of the first temperature difference and the second temperature difference, and not refrigerating the compartment corresponding to the smaller one of the first temperature difference and the second temperature difference; stopping refrigerating the compartment corresponding to the larger one of the first temperature difference and the second temperature difference after the current temperature of the compartment corresponding to the larger one of the first temperature difference and the second temperature difference reaches the shutdown temperature of the compartment; and starting to refrigerate the compartment corresponding to the smaller of the first temperature difference and the second temperature difference until the current temperature of the compartment corresponding to the smaller of the first temperature difference and the second temperature difference reaches the shutdown point temperature, and then stopping refrigerating the compartment corresponding to the smaller of the first temperature difference and the second temperature difference.

Optionally, controlling the first compartment and the second compartment to perform refrigeration further includes: after preferentially refrigerating the compartment corresponding to the larger one of the first temperature difference and the second temperature difference and before the current temperature of the compartment corresponding to the larger one of the first temperature difference and the second temperature difference reaches the shutdown temperature of the compartment, determining whether the current temperature of the compartment corresponding to the smaller one of the first temperature difference and the second temperature difference reaches the temperature limit value of the compartment needing immediate refrigeration and/or whether the current refrigerating time length of the compartment corresponding to the smaller one of the first temperature difference and the second temperature difference reaches the set time length; if the current temperature of the compartment corresponding to the smaller of the first temperature difference and the second temperature difference reaches the temperature limit value of the compartment needing immediate refrigeration and/or the current refrigeration time length for refrigerating the compartment corresponding to the smaller of the first temperature difference and the second temperature difference reaches the set time length, determining whether the current temperature difference value between the current temperature of the compartment corresponding to the larger of the first temperature difference and the second temperature difference and the shutdown point temperature of the compartment corresponding to the larger of the first temperature difference and the second temperature difference is reduced to be smaller than the set temperature threshold value; if the current temperature difference value between the current temperature of the compartment corresponding to the larger of the first temperature difference and the second temperature difference and the shutdown point temperature of the compartment is reduced to be smaller than a set temperature threshold value, adjusting the refrigeration sequence of the compartment corresponding to the larger of the first temperature difference and the second temperature difference and the compartment corresponding to the smaller of the first temperature difference and the second temperature difference; if the current temperature difference value between the current temperature of the compartment corresponding to the larger of the first temperature difference and the second temperature difference and the shutdown point temperature of the compartment is not reduced to be smaller than the set temperature threshold value, the compartment corresponding to the smaller of the first temperature difference and the second temperature difference starts to be refrigerated while the compartment corresponding to the larger of the first temperature difference and the second temperature difference is refrigerated.

Optionally, adjusting a refrigeration sequence of the compartment corresponding to the larger of the first temperature difference and the second temperature difference and the compartment corresponding to the smaller of the first temperature difference and the second temperature difference includes: suspending the refrigeration of the compartment corresponding to the larger of the first temperature difference and the second temperature difference, and switching to preferentially refrigerating the compartment corresponding to the smaller of the first temperature difference and the second temperature difference; stopping refrigerating the compartment corresponding to the smaller one of the first temperature difference and the second temperature difference after the current temperature of the compartment corresponding to the smaller one of the first temperature difference and the second temperature difference reaches the shutdown point temperature of the compartment; and restarting the refrigeration of the compartment corresponding to the larger of the first temperature difference and the second temperature difference, so as to stop the refrigeration of the compartment corresponding to the larger of the first temperature difference and the second temperature difference after the current temperature of the compartment corresponding to the larger of the first temperature difference and the second temperature difference reaches the shutdown temperature of the compartment.

Optionally, controlling the first compartment and the second compartment to perform refrigeration further includes: if the first temperature difference is equal to the second temperature difference, controlling the first compartment and the second compartment to refrigerate simultaneously; the refrigeration of the first compartment is stopped after the current temperature of the first compartment reaches its shutdown point temperature, and the refrigeration of the second compartment is stopped after the current temperature of the second compartment reaches its shutdown point temperature.

In accordance with the above method, another aspect of the present invention provides a control apparatus for a refrigerator, wherein a first compartment evaporator and a second compartment evaporator of the refrigerator are connected in parallel, and the first compartment evaporator and a third compartment evaporator are connected in series; the control device of the refrigerator comprises: the device comprises a determining unit, a judging unit and a control unit, wherein the determining unit is used for determining a first temperature difference between the current temperature of the first chamber and the shutdown point temperature of the first chamber and determining a second temperature difference between the current temperature of the second chamber and the shutdown point temperature of the second chamber under the condition of receiving a request for cooling the first chamber and the second chamber simultaneously; the determining unit is further used for determining the magnitude relation between the first temperature difference and the second temperature difference; and the control unit is used for controlling the first compartment and the second compartment to refrigerate according to the magnitude relation between the first temperature difference and the second temperature difference.

Optionally, the control unit controls the first compartment and the second compartment to perform cooling, and includes: if the first temperature difference is not equal to the second temperature difference, preferentially refrigerating the compartment corresponding to the larger one of the first temperature difference and the second temperature difference, and not refrigerating the compartment corresponding to the smaller one of the first temperature difference and the second temperature difference; stopping refrigerating the compartment corresponding to the larger one of the first temperature difference and the second temperature difference after the current temperature of the compartment corresponding to the larger one of the first temperature difference and the second temperature difference reaches the shutdown temperature of the compartment; and starting to refrigerate the compartment corresponding to the smaller of the first temperature difference and the second temperature difference until the current temperature of the compartment corresponding to the smaller of the first temperature difference and the second temperature difference reaches the shutdown point temperature, and then stopping refrigerating the compartment corresponding to the smaller of the first temperature difference and the second temperature difference.

Optionally, the control unit controls the first compartment and the second compartment to perform cooling, and further includes: after preferentially refrigerating the compartment corresponding to the larger one of the first temperature difference and the second temperature difference and before the current temperature of the compartment corresponding to the larger one of the first temperature difference and the second temperature difference reaches the shutdown temperature of the compartment, determining whether the current temperature of the compartment corresponding to the smaller one of the first temperature difference and the second temperature difference reaches the temperature limit value of the compartment needing immediate refrigeration and/or whether the current refrigerating time length of the compartment corresponding to the smaller one of the first temperature difference and the second temperature difference reaches the set time length; if the current temperature of the compartment corresponding to the smaller of the first temperature difference and the second temperature difference reaches the temperature limit value of the compartment needing immediate refrigeration and/or the current refrigeration time length for refrigerating the compartment corresponding to the smaller of the first temperature difference and the second temperature difference reaches the set time length, determining whether the current temperature difference value between the current temperature of the compartment corresponding to the larger of the first temperature difference and the second temperature difference and the shutdown point temperature of the compartment corresponding to the larger of the first temperature difference and the second temperature difference is reduced to be smaller than the set temperature threshold value; if the current temperature difference value between the current temperature of the compartment corresponding to the larger of the first temperature difference and the second temperature difference and the shutdown point temperature of the compartment is reduced to be smaller than a set temperature threshold value, adjusting the refrigeration sequence of the compartment corresponding to the larger of the first temperature difference and the second temperature difference and the compartment corresponding to the smaller of the first temperature difference and the second temperature difference; if the current temperature difference value between the current temperature of the compartment corresponding to the larger of the first temperature difference and the second temperature difference and the shutdown point temperature of the compartment is not reduced to be smaller than the set temperature threshold value, the compartment corresponding to the smaller of the first temperature difference and the second temperature difference starts to be refrigerated while the compartment corresponding to the larger of the first temperature difference and the second temperature difference is refrigerated.

Optionally, the adjusting, by the control unit, the refrigerating sequence of the compartment corresponding to the larger of the first temperature difference and the second temperature difference and the compartment corresponding to the smaller of the first temperature difference and the second temperature difference includes: suspending the refrigeration of the compartment corresponding to the larger of the first temperature difference and the second temperature difference, and switching to preferentially refrigerating the compartment corresponding to the smaller of the first temperature difference and the second temperature difference; stopping refrigerating the compartment corresponding to the smaller one of the first temperature difference and the second temperature difference after the current temperature of the compartment corresponding to the smaller one of the first temperature difference and the second temperature difference reaches the shutdown point temperature of the compartment; and restarting the refrigeration of the compartment corresponding to the larger of the first temperature difference and the second temperature difference, so as to stop the refrigeration of the compartment corresponding to the larger of the first temperature difference and the second temperature difference after the current temperature of the compartment corresponding to the larger of the first temperature difference and the second temperature difference reaches the shutdown temperature of the compartment.

Optionally, the control unit controls the first compartment and the second compartment to perform cooling, and further includes: if the first temperature difference is equal to the second temperature difference, controlling the first compartment and the second compartment to refrigerate simultaneously; the refrigeration of the first compartment is stopped after the current temperature of the first compartment reaches its shutdown point temperature, and the refrigeration of the second compartment is stopped after the current temperature of the second compartment reaches its shutdown point temperature.

In accordance with the above apparatus, another aspect of the present invention provides a refrigerator, comprising: the control device of the refrigerator is described above.

In accordance with the above method, a further aspect of the present invention provides a storage medium, which includes a stored program, wherein when the program runs, an apparatus in which the storage medium is located is controlled to execute the above control method of the refrigerator.

In accordance with the above method, a further aspect of the present invention provides a processor for executing a program, wherein the program executes the above control method of the refrigerator.

According to the scheme provided by the invention, when the two compartments have refrigeration requests at the same time, the two compartments are separately operated to be independently refrigerated without causing mutual influence, so that the two compartments can be normally refrigerated and are balanced in refrigeration.

Furthermore, according to the scheme of the invention, when the two chambers have refrigeration requests at the same time, the two chambers are separately operated to be independently refrigerated, and the refrigeration sequence of the two chambers is adjusted in the process of independent refrigeration of the two chambers, so that the situation that the expected refrigeration effect cannot be achieved due to too much refrigerant consumption can be avoided.

Furthermore, according to the scheme of the invention, when two compartments have refrigeration requests at the same time, the compartment with poor refrigeration effect is independently refrigerated firstly, and when the compartment with poor refrigeration effect reaches a shutdown point, the compartment with good refrigeration effect is refrigerated, so that the refrigeration balance of the two compartments can be ensured.

Further, according to the scheme of the invention, when two compartments have refrigeration requests at the same time, the compartment with poor refrigeration effect is independently refrigerated firstly, and in the process of independently refrigerating the compartment with poor refrigeration effect, if the compartment with good refrigeration effect reaches the temperature limit value, the compartment with good refrigeration effect is switched to the compartment with good refrigeration effect for independent refrigeration preferentially, so that the situation that the compartment with good refrigeration effect is not refrigerated for a long time to cause food spoilage can be avoided.

Further, according to the scheme of the invention, when two compartments have refrigeration requests at the same time, the compartment with poor refrigeration effect is independently refrigerated firstly, and in the process of independently refrigerating the compartment with poor refrigeration effect, if the compartment with poor refrigeration effect does not reach a stop point for a long time, the compartment with good refrigeration effect is switched to the compartment with good refrigeration effect for independent refrigeration preferentially, so that the situation that food is rotten due to the fact that the compartment with good refrigeration effect is not refrigerated for a long time can be avoided.

Therefore, according to the scheme of the invention, when two compartments have refrigeration requests at the same time, the two compartments are separately operated to be independently refrigerated without causing mutual influence, the problem of unbalanced refrigeration when the two compartments are simultaneously refrigerated is solved, for example, for a direct-cooling multi-cycle refrigerator (namely for a system for controlling the refrigeration of different compartments by controlling the flow direction of a refrigerant through a valve switch), when the two compartments simultaneously having the refrigeration requests are simultaneously refrigerated, the problem of poor refrigeration balance exists, and the effect of refrigeration balance when the two compartments are simultaneously refrigerated is achieved, for example, the refrigeration balance when the two compartments in the direct-cooling multi-cycle refrigerator are simultaneously refrigerated is improved.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.

Drawings

Fig. 1 is a schematic flowchart of a control method of a refrigerator according to an embodiment of the present invention;

FIG. 2 is a schematic flow diagram of one embodiment of the method of the present invention wherein the first compartment and the second compartment are separately refrigerated;

FIG. 3 is a schematic flow chart illustrating an embodiment of the method of the present invention for adjusting the process of preferentially cooling the compartment corresponding to the greater of the first temperature difference and the second temperature difference;

FIG. 4 is a schematic flow chart illustrating an embodiment of adjusting the refrigeration sequence of the compartments corresponding to the larger of the first temperature difference and the second temperature difference and the compartments corresponding to the smaller of the first temperature difference and the second temperature difference in the method of the present invention;

FIG. 5 is a schematic flow diagram of one embodiment of the method of the present invention for simultaneously refrigerating a first compartment and a second compartment;

FIG. 6 is a schematic structural diagram of a control device of a refrigerator according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of a serial-parallel refrigeration system according to an embodiment of the refrigerator of the present invention;

fig. 8 is a schematic diagram of an electric valve of an embodiment of the refrigerator according to the present invention;

fig. 9 is a table showing a correspondence between states of the electric valve and the compartment state in accordance with an embodiment of the refrigerator of the present invention;

fig. 10 is a schematic flow chart of a refrigeration process of an embodiment of the refrigerator according to the present invention.

The reference numbers in the embodiments of the present invention are as follows, in combination with the accompanying drawings:

102-a determination unit; 104-control unit.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the accompanying drawings. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

According to an embodiment of the present invention, a method for controlling a refrigerator is provided, as shown in fig. 1, which is a schematic flow chart of an embodiment of the method of the present invention. The control method of the refrigerator is characterized in that a first compartment (such as a temperature-changing chamber), a second compartment (such as a freezing chamber) and a third compartment (such as a refrigerating chamber) are arranged in a refrigerating system of the refrigerator, a first compartment evaporator (such as a temperature-changing chamber evaporator) and a second compartment evaporator (such as a freezing chamber evaporator) of the refrigerator are connected in parallel, and the first compartment evaporator (such as a temperature-changing chamber evaporator) and the third compartment evaporator (such as a refrigerating chamber evaporator) are connected in series, so that the aim of separately refrigerating the first compartment (such as the temperature-changing chamber) and the second compartment (such as the freezing chamber) is fulfilled. The refrigeration system of the refrigerator can adopt an electric switching valve to switch and control the refrigeration process of different chambers. Electric switching valve: the valve is installed on a compressor bin and used as a switch for controlling the flow direction of a refrigerant, different numbers of pulses correspond to different valves to be closed or opened, no refrigerant flows into the valve when the valve is closed, and the corresponding chamber is not refrigerated. For example: one inlet valve and three outlet valves can be selected and respectively used as an inlet pipe A, an outlet pipe B of the temperature-changing chamber, an outlet C of the refrigerating chamber and an outlet D of the freezing chamber. 0 pulse time-varying greenhouse outlet pipe B is opened, a refrigerating chamber outlet C is closed, a freezing chamber outlet D is opened, 16 pulse time-varying greenhouse outlet pipe B is closed, a refrigerating chamber outlet C is opened, a freezing chamber outlet D is closed, 32 pulse time-varying greenhouse outlet pipe B is closed, a refrigerating chamber outlet C is closed, a freezing chamber outlet D is opened, 48 pulse time-varying greenhouse outlet pipe B is opened, a refrigerating chamber outlet C is closed, and a freezing chamber outlet D is closed. The control method of the refrigerator may include: step S110 to step S130.

In the case where a request for simultaneous cooling of the first compartment and the second compartment is received, a first temperature difference between the current temperature of the first compartment and the stop point temperature thereof is determined, and a second temperature difference between the current temperature of the second compartment and the stop point temperature thereof is determined, that is, a first temperature difference between the first current temperature of the first compartment and the first stop point temperature of the first compartment and a second temperature difference between the second current temperature of the second compartment and the second stop point temperature of the second compartment are determined at step S110.

For example: the refrigerator is operated in the original state, and the temperature a of the temperature-changing chamber sensor and the temperature b of the freezing chamber sensor are respectively recorded. In a state where the refrigerator has been stably operated, when two compartments (such as a variable temperature compartment and a freezing compartment except for a refrigerating compartment) have a request for cooling at the same time, a temperature difference between the two compartments with respect to a stop point is calculated by judging a variable temperature compartment temperature sensor temperature a and a freezing compartment temperature sensor temperature b, that is: calculating the temperature difference delta a of the temperature-changing room temperature sensor relative to the stop point A of the temperature-changing room: Δ a ═ a-a; and calculating a freezer compartment temperature difference Δ B of the freezer compartment temperature sensor temperature B relative to the freezer compartment shut-down point B: Δ B ═ B-B.

At step S120, a magnitude relationship between the first temperature difference and the second temperature difference is determined. For example: and judging the temperature difference delta a of the temperature-changing chamber and the temperature difference delta b of the freezing chamber.

In step S130, the first compartment and the second compartment are controlled to perform cooling according to the magnitude relationship between the first temperature difference and the second temperature difference. If a series-parallel connection type refrigerating system is adopted, and whether a valve of a certain chamber needs to be opened to flow the refrigerant is determined by judging the temperature difference between the current temperature of the chamber and the stop point. Here, the magnitude relationship between the first temperature difference and the second temperature difference may indicate the superiority and inferiority of the cooling effect of the first compartment and the second compartment. According to the refrigerating effect of the first compartment and the refrigerating effect of the second compartment, the first compartment and the second compartment are subjected to balanced refrigeration, when the difference between the refrigerating effects of the first compartment and the second compartment is large, the compartment with the poor refrigerating effect can be refrigerated preferentially, and the compartment with the good refrigerating effect is not refrigerated first, so that the refrigerating effect of the compartment with the poor refrigerating effect is prevented from being further deteriorated; when the difference of the refrigeration effects of the first chamber and the second chamber is smaller and equal, the first chamber and the second chamber are simultaneously refrigerated, and the synchronous optimization of the refrigeration effects of the two chambers is ensured.

For example: when two compartments have a refrigeration request at the same time, the two compartments are not required to be refrigerated at the same time; but two compartments are separately operated to be independently refrigerated without causing mutual influence, thereby reducing the occurrence of refrigeration faults caused by the fact that two compartments with refrigeration requests are simultaneously refrigerated, for example, the problem that the temperature of one compartment is lower and lower due to better and better refrigeration effect of the other compartment and the temperature of the other compartment cannot reach the set temperature due to worse and worse refrigeration effect of the other compartment in the traditional refrigeration system is solved, thereby achieving the technical effect that the two compartments can be normally refrigerated and have balanced refrigeration, and fundamentally solving the defect that the refrigeration system is controlled by the switch of a valve used in some refrigerators.

For example: by adopting the series-parallel connection type refrigerating system, when two compartments (such as a freezing compartment and a temperature-changing compartment, which do not relate to whether a refrigerating compartment needs refrigerating) have refrigerating requests at the same time, a refrigerant is preferentially supplied to the compartment a with poor refrigerating effect, the compartment b with good refrigerating effect is not refrigerated firstly, and the compartment b is refrigerated after the compartment a reaches a stop point. By adjusting the sequence of the refrigerating system and changing the sequence into a series-parallel connection mode, the problems that the flow of the refrigerant received by the freezing chamber is small and hot gas is mixed in the conventional single system can be solved, so that the cost is saved, the situation that the expected refrigerating effect cannot be achieved due to too much refrigerant consumption is avoided, and the food spoilage situation is reduced; the service life of the refrigerator is prolonged, the phenomenon that the refrigeration effect of the refrigerator is reduced due to external factors such as improper use of a user and the like can be avoided, and the use feeling of the user is improved.

Therefore, the series-parallel connection arrangement is adopted among the three refrigeration systems, the refrigerating effect of the two chambers is determined according to the difference value between the current temperature of each chamber and the shutdown point temperature of the chamber under the condition that the chambers where the two refrigeration systems connected in parallel have refrigerating requirements at the same time, and the two chambers are subjected to balanced refrigeration according to the refrigerating effect of the two chambers, so that the poor refrigerating effect of the chambers is avoided being worse.

Alternatively, the step S130 of controlling the first compartment and the second compartment to perform cooling according to the magnitude relationship between the first temperature difference and the second temperature difference may include the following first control process.

A first control process: the process of separately refrigerating the first compartment and the second compartment may be referred to in particular in the following exemplary description.

The following description, with reference to the schematic flow chart of an embodiment of the method of the present invention shown in fig. 2, of independently refrigerating the first compartment and the second compartment, further describes a specific process of independently refrigerating the first compartment and the second compartment, which may include: step S210 and step S220.

Step S210, when the first temperature difference is greater than the second temperature difference, or the first temperature difference is smaller than the second temperature difference, that is, if the first temperature difference is not equal to the second temperature difference, the compartment corresponding to the greater of the first temperature difference and the second temperature difference is used as a compartment that is preferentially cooled, that is, the compartment corresponding to the greater of the first temperature difference and the second temperature difference is preferentially cooled, and the compartment corresponding to the smaller of the first temperature difference and the second temperature difference is used as a compartment that is not preferentially cooled, that is, the compartment corresponding to the smaller of the first temperature difference and the second temperature difference is not cooled.

Step S220, stopping refrigerating the compartments with the priority refrigeration after the current temperature of the compartments with the priority refrigeration reaches the shutdown temperature; and starting to refrigerate the compartments which are not preferentially refrigerated until the current temperature of the compartments which are not preferentially refrigerated reaches the shutdown temperature of the compartments, and stopping refrigerating the compartments which are not preferentially refrigerated. That is, after the current temperature of the compartment corresponding to the greater of the first temperature difference and the second temperature difference reaches the shutdown temperature thereof, the refrigeration of the compartment corresponding to the greater of the first temperature difference and the second temperature difference is stopped; and starting to refrigerate the compartment corresponding to the smaller of the first temperature difference and the second temperature difference until the current temperature of the compartment corresponding to the smaller of the first temperature difference and the second temperature difference reaches the shutdown point temperature, and then stopping refrigerating the compartment corresponding to the smaller of the first temperature difference and the second temperature difference.

For example: when two compartments (such as a freezing compartment and a temperature-changing compartment) have refrigeration requests at the same time, the compartment with poor refrigeration effect is preferentially refrigerated, and the compartment with good refrigeration effect is not refrigerated. Here, the determination of the compartment having a poor cooling effect may include: compared with the two chambers, the temperature difference of one chamber compared with the shutdown point is larger than that of the other chamber compared with the shutdown point, and the freezing effect of the product cannot be achieved. For example: at the moment, the gear shifting room stop point A is set to be-15 ℃, the freezing room stop point B is set to be-18 ℃, and when the temperature difference of the shifting room compared with the stop point is larger than the temperature difference of the freezing room compared with the stop point, the shifting room is judged to need to increase the flow rate of the refrigerant to carry out refrigeration, so that the following program is started to carry out refrigeration.

For example: and if the temperature difference delta a of the variable temperature chamber is greater than the temperature difference delta b of the freezing chamber, judging that the variable temperature chamber needs to be refrigerated more, namely the refrigerating effect of the variable temperature chamber is poorer. When the warming chamber needs to be cooled preferentially, the electric switching valve receives 48 pulse signals, the warming chamber valve B corresponding to the electric switching valve is opened, the freezing chamber is kept as it is, the freezing chamber valve D corresponding to the electric switching valve is closed, refrigerant flows into the warming chamber through the warming chamber valve B, and the system cools the warming chamber preferentially. And stopping refrigerating when the temperature-changing chamber reaches the condition of stopping refrigerating (namely the temperature of the temperature-changing chamber temperature sensor reaches the temperature-changing chamber stop point, and if the temperature of the temperature-changing chamber temperature sensor is less than or equal to minus 15 ℃), receiving a 32 pulse signal by the electric switching valve, closing the temperature-changing chamber valve B corresponding to the electric switching valve, starting refrigerating the freezing chamber, opening the freezing chamber valve D corresponding to the electric switching valve for refrigerating until the freezing chamber also reaches the required refrigerating condition (namely the temperature of the freezing chamber temperature sensor reaches the freezing chamber stop point), stopping refrigerating, receiving a 16 pulse signal by the electric switching valve, and closing the freezing chamber and the temperature-changing chamber valve B.

For another example: if the temperature difference delta a of the temperature-changing chamber is less than the temperature difference delta b of the freezing chamber, the refrigerating effect of the freezing chamber is judged to be worse, and the electric switching valve switches 32 pulses to preferentially refrigerate the freezing chamber. The procedure of preferential refrigeration of the freezing chamber can be referred to the degree of preferential refrigeration of the temperature-variable chamber. The procedure can avoid the problem that the refrigerating effect of the chambers is poor due to insufficient refrigerant flow and doped evaporation hot gas caused by simultaneous refrigeration of the two chambers. The condition of misjudgment can also be avoided by judging and controlling the refrigeration sequence through the temperature difference, the flow direction of the refrigerant is flexibly adjusted, and the simultaneous refrigeration or the independent refrigeration is judged according to the temperature difference. Such as: the temperature-variable chamber stop point A is-15 ℃, the freezing chamber stop point B is-18 ℃, the temperature a of the temperature-variable chamber sensor is-12 ℃, the temperature B of the freezing chamber sensor is-13 ℃, the temperature difference delta a of the temperature-variable chamber is 3 ℃, the temperature difference delta B of the freezing chamber is 5 ℃, the temperature difference delta a of the temperature-variable chamber is less than the temperature difference delta B of the freezing chamber, the refrigerating effect of the freezing chamber is judged to be worse, the electric switching valve switches 32 pulses to preferentially refrigerate the freezing chamber, the refrigeration is stopped when the freezing chamber reaches the stop point, the electric switching valve receives 48 pulse signals to refrigerate the temperature-variable chamber, and the process is finished when the stop point.

Therefore, when the temperature difference between the current temperature of the two compartments and the respective shutdown point temperature is large, the refrigerating effect difference of the two compartments is determined to be large, the compartment with the inferior refrigerating effect is preferentially refrigerated, and the compartment with the superior refrigerating effect is not refrigerated, so that the refrigerating effect of the compartment with the inferior refrigerating effect is prevented from being further deteriorated; and the compartment with the relatively poor refrigerating effect is stopped after the current temperature of the compartment reaches the stopping point temperature of the compartment with the relatively poor refrigerating effect, and the compartment with the relatively good refrigerating effect is refrigerated, so that the compartment with the relatively good refrigerating effect can be prevented from quickly reaching the refrigerating effect and being prevented from being degraded.

Further optionally, in step S130, controlling the first compartment and the second compartment to perform cooling according to a magnitude relationship between the first temperature difference and the second temperature difference, and the method may further include: and a process of adjusting the process of preferentially cooling the compartment corresponding to the greater of the first temperature difference and the second temperature difference according to whether the current temperature of the compartment corresponding to the greater of the first temperature difference and the second temperature difference reaches the temperature limit value thereof in the process of preferentially cooling the compartment corresponding to the greater of the first temperature difference and the second temperature difference.

With reference to the schematic flow chart of an embodiment of the method of the present invention shown in fig. 3, further describing a specific process of adjusting the process of preferentially cooling the compartment corresponding to the greater of the first temperature difference and the second temperature difference in step S120, the specific process may include: step S310 to step S340.

Step S310, in the first control process, after the compartment corresponding to the larger one of the first temperature difference and the second temperature difference is preferentially refrigerated and before the current temperature of the compartment corresponding to the larger one of the first temperature difference and the second temperature difference reaches the shutdown temperature of the compartment, determining whether the current temperature of the compartment corresponding to the smaller one of the first temperature difference and the second temperature difference reaches the temperature limit value of the compartment needing immediate refrigeration and/or whether the current refrigeration duration of the compartment corresponding to the smaller one of the first temperature difference and the second temperature difference reaches the set duration.

Step S320, if the current temperature of the compartment corresponding to the smaller of the first temperature difference and the second temperature difference reaches the temperature limit value at which the compartment needs to be immediately cooled, and/or the current cooling time length for cooling the compartment corresponding to the smaller of the first temperature difference and the second temperature difference reaches the set time length, determining whether the current temperature difference between the current temperature of the compartment corresponding to the larger of the first temperature difference and the second temperature difference and the shutdown point temperature thereof has been reduced to be less than the set temperature threshold.

Step S330, if the current temperature difference between the current temperature of the compartment corresponding to the greater of the first temperature difference and the second temperature difference and the shutdown point temperature thereof has been reduced to be less than the set temperature threshold, adjusting the refrigeration sequence of the compartment corresponding to the greater of the first temperature difference and the second temperature difference and the compartment corresponding to the lesser of the first temperature difference and the second temperature difference.

More optionally, with reference to a schematic flow chart of an embodiment of adjusting a refrigeration sequence of the compartment corresponding to the larger of the first temperature difference and the second temperature difference and the compartment corresponding to the smaller of the first temperature difference and the second temperature difference in the method of the present invention shown in fig. 4, a specific process of adjusting a refrigeration sequence of the compartment corresponding to the larger of the first temperature difference and the second temperature difference and the compartment corresponding to the smaller of the first temperature difference and the second temperature difference in step S330 may further be described, where the specific process includes: step S410 and step S420.

Step S410, suspending the cooling of the compartment corresponding to the larger of the first temperature difference and the second temperature difference, and switching to preferentially cooling the compartment corresponding to the smaller of the first temperature difference and the second temperature difference.

Step S420, after the current temperature of the compartment corresponding to the smaller of the first temperature difference and the second temperature difference reaches the shutdown point temperature, the refrigeration of the compartment corresponding to the smaller of the first temperature difference and the second temperature difference is stopped; and restarting the refrigeration of the compartment corresponding to the larger of the first temperature difference and the second temperature difference, so as to stop the refrigeration of the compartment corresponding to the larger of the first temperature difference and the second temperature difference after the current temperature of the compartment corresponding to the larger of the first temperature difference and the second temperature difference reaches the shutdown temperature of the compartment.

In a specific example, the controlling the first compartment and the second compartment to perform cooling according to the magnitude relationship between the first temperature difference and the second temperature difference may further include: in the process of preferentially cooling the compartment corresponding to the larger of the first temperature difference and the second temperature difference, the process of preferentially cooling the compartment corresponding to the larger of the first temperature difference and the second temperature difference may be adjusted according to whether the current temperature of the compartment corresponding to the larger of the first temperature difference and the second temperature difference reaches the temperature limit value thereof, and specifically, refer to the following exemplary description.

In a first control process, after the compartment corresponding to the larger of the first temperature difference and the second temperature difference is preferentially refrigerated and before the current temperature of the compartment corresponding to the larger of the first temperature difference and the second temperature difference reaches the shutdown temperature of the compartment, determining whether the current temperature of the compartment corresponding to the smaller of the first temperature difference and the second temperature difference reaches the temperature limit value of the compartment needing immediate refrigeration; further, if the current temperature of the compartment corresponding to the smaller of the first temperature difference and the second temperature difference reaches the temperature limit value of the compartment needing immediate refrigeration, determining whether the current temperature difference value between the current temperature of the compartment corresponding to the larger of the first temperature difference and the second temperature difference and the shutdown point temperature of the compartment is reduced to be smaller than a set temperature threshold value; furthermore, if the current temperature difference value between the current temperature of the compartment corresponding to the larger of the first temperature difference and the second temperature difference and the shutdown point temperature of the compartment is reduced to be smaller than a set temperature threshold value, the refrigeration of the compartment corresponding to the larger of the first temperature difference and the second temperature difference is suspended, and the compartment corresponding to the smaller of the first temperature difference and the second temperature difference is switched to be preferentially refrigerated; and stopping the refrigeration of the compartment corresponding to the smaller of the first temperature difference and the second temperature difference after the current temperature of the compartment corresponding to the smaller of the first temperature difference and the second temperature difference reaches the shutdown temperature thereof, and restarting the refrigeration of the compartment corresponding to the larger of the first temperature difference and the second temperature difference, so as to stop the refrigeration of the compartment corresponding to the larger of the first temperature difference and the second temperature difference after the current temperature of the compartment corresponding to the larger of the first temperature difference and the second temperature difference reaches the shutdown temperature thereof.

For example: in the process of preferential refrigeration of the temperature-varying chamber, if the temperature of the freezing chamber reaches the temperature limit value which needs immediate refrigeration to be-10 ℃ (the temperature-varying chamber limit value is-7 ℃), and the temperature difference delta a of the temperature-varying chamber relative to the stop point is less than 3 ℃, the electric switching valve immediately switches 32 pulses to preferentially refrigerate the freezing chamber, the freezing chamber is switched to the temperature-varying chamber to refrigerate after the freezing chamber reaches the stop point, and the program is ended after the temperature-varying chamber reaches the stop point.

For another example: in the process of preferential refrigeration of the temperature-varying chamber, if the temperature-varying chamber does not reach the shutdown point after a certain time X (the time is determined by test data of cooling capacity of a test center, for example, X is 60min), and the temperature difference delta a of the temperature-varying chamber relative to the shutdown point is less than 3 ℃ or 6 ℃, the electric switching valve immediately switches 32 pulses to preferentially refrigerate the freezing chamber, the temperature-varying chamber is switched to refrigerate after the freezing chamber reaches the shutdown point, and the program is ended after the temperature-varying chamber reaches the shutdown point.

Therefore, each compartment is separately operated, each loop independently operates, and is independently refrigerated without mutual influence, and the temperature difference between the loop and a stop point is judged to determine which compartment needs to be refrigerated more accurately, so that misjudgment is reduced, refrigeration faults caused by poor refrigeration effect of one compartment due to simultaneous refrigeration of two compartments are reduced, and the purposes of normal refrigeration and balanced refrigeration of the two compartments are achieved; the defect that the refrigeration system is controlled by a valve switch in the current refrigerator industry can be fundamentally overcome; the service life of the refrigerator is prolonged, the phenomenon that the refrigeration effect of the refrigerator is reduced due to external factors such as improper use of a user is avoided, and the use feeling of the user is improved; the cost can be saved, the situation that the expected refrigeration effect cannot be achieved due to the fact that too much refrigerant is consumed is avoided, and the food spoilage situation is reduced.

Therefore, in the process of independently refrigerating one compartment, if the temperature of the other compartment is higher, the other compartment is adjusted to suspend independent refrigeration of the one compartment and adjusted to independently refrigerate the other compartment, so that the phenomenon that the other compartment influences food refrigeration due to overhigh temperature is avoided, the refrigeration effect of the two compartments can be ensured, and food spoilage is avoided.

Step S340, if the current temperature difference between the current temperature of the compartment corresponding to the greater of the first temperature difference and the second temperature difference and the shutdown point temperature thereof is not reduced to be less than the set temperature threshold, starting to refrigerate the compartment corresponding to the smaller of the first temperature difference and the second temperature difference while refrigerating the compartment corresponding to the greater of the first temperature difference and the second temperature difference; stopping the refrigeration of the compartment corresponding to the larger one of the first temperature difference and the second temperature difference after the current temperature of the compartment corresponding to the larger one of the first temperature difference and the second temperature difference reaches the shutdown point temperature of the compartment; and stopping refrigerating the compartment corresponding to the smaller one of the first temperature difference and the second temperature difference after the current temperature of the compartment corresponding to the smaller one of the first temperature difference and the second temperature difference reaches the shutdown temperature of the compartment.

For example: in the process of refrigerating the compartment a, if the compartment b reaches a certain temperature limit value, the valve is immediately switched to preferentially refrigerate the compartment b, or the compartment a and the compartment b are refrigerated simultaneously. For another example: in the refrigerating process of the compartment a, if the compartment a is not cooled for a period of time and still does not reach the stop point, the valve is immediately switched to preferentially refrigerate the compartment b, or the compartment a and the compartment b are simultaneously refrigerated. Therefore, the condition that the temperature of one chamber is lower and the temperature of the other chamber cannot reach the set temperature due to unbalanced refrigeration can be avoided, and the condition that food is rotten due to overhigh temperature caused by the fact that the other chamber cannot be refrigerated for a long time is also avoided.

In a first control process, after the compartment corresponding to the larger of the first temperature difference and the second temperature difference is preferentially refrigerated and before the current temperature of the compartment corresponding to the larger of the first temperature difference and the second temperature difference reaches the shutdown temperature of the compartment, determining whether the current temperature of the compartment corresponding to the smaller of the first temperature difference and the second temperature difference reaches the temperature limit value of the compartment needing immediate refrigeration; further, if the current temperature of the compartment corresponding to the smaller of the first temperature difference and the second temperature difference reaches the temperature limit value of the compartment needing immediate refrigeration, determining whether the current temperature difference value between the current temperature of the compartment corresponding to the larger of the first temperature difference and the second temperature difference and the shutdown point temperature of the compartment is reduced to be smaller than a set temperature threshold value; furthermore, if the current temperature difference value between the current temperature of the compartment corresponding to the larger of the first temperature difference and the second temperature difference and the shutdown point temperature thereof is not reduced to be less than the set temperature threshold value, the compartment corresponding to the smaller of the first temperature difference and the second temperature difference starts to be refrigerated while the compartment corresponding to the larger of the first temperature difference and the second temperature difference is refrigerated; stopping the refrigeration of the compartment corresponding to the larger one of the first temperature difference and the second temperature difference after the current temperature of the compartment corresponding to the larger one of the first temperature difference and the second temperature difference reaches the shutdown point temperature of the compartment; and stopping refrigerating the compartment corresponding to the smaller one of the first temperature difference and the second temperature difference after the current temperature of the compartment corresponding to the smaller one of the first temperature difference and the second temperature difference reaches the shutdown temperature of the compartment.

For example: in the process of preferential refrigeration of the temperature-varying chamber, if the temperature of the freezing chamber reaches the temperature limit value of-10 ℃ which needs immediate refrigeration and the temperature difference delta a of the temperature-varying chamber relative to the stop point is more than or equal to 3 ℃, the electric switching valve switches 0 pulse to simultaneously refrigerate the two chambers, and the program is ended after the temperature of the two chambers both reach the stop point. This procedure prevents one compartment from cooling causing the other compartment to rise back too high in temperature, causing food spoilage. Such as: if the temperature of the temperature-changing chamber rises to-7 ℃ in the refrigerating process of the freezing chamber and the temperature of the freezing chamber is-16 ℃, switching 48 pulses to refrigerate the temperature-changing chamber, switching 32 pulses to refrigerate the freezing chamber after the stop point is reached, and ending after the stop point.

For another example: if the temperature difference delta a of the temperature-changing chamber relative to the stop point is more than or equal to 3 ℃ or 6 ℃, the electric switching valve switches 0 pulse to simultaneously refrigerate the two chambers, and the program is ended after the temperature-changing chamber and the stop point are both reached. This procedure prevents one compartment from cooling too long to the point of shutdown, causing the temperature of another compartment to rise too high, causing food spoilage. Such as: and if the freezing chamber does not reach the stop point after 60 minutes and the temperature of the temperature-changing chamber is-8 ℃, switching 0 pulse to simultaneously refrigerate the two chambers, and ending after the stop point is reached.

Therefore, in the process of preferentially refrigerating the compartment corresponding to the larger one of the first temperature difference and the second temperature difference, the process of preferentially refrigerating the compartment corresponding to the larger one of the first temperature difference and the second temperature difference is adjusted according to whether the current temperature of the compartment corresponding to the larger one of the first temperature difference and the second temperature difference reaches the temperature limit value, so that the refrigerating mode can be timely adjusted according to the actual temperature conditions of the two compartments, the phenomenon that food is rotten due to the overhigh temperature of one greenhouse is avoided, and the use of people is facilitated.

Optionally, in step S130, the first compartment and the second compartment are controlled to perform cooling according to the magnitude relationship between the first temperature difference and the second temperature difference, and the following second control process may be further included. Wherein the first control process and the second control process can perform only one control process in the same cooling situation.

A second control process: the process of simultaneously refrigerating the first compartment and the second compartment may be referred to in particular in the following exemplary description.

Referring now to fig. 5, a flow diagram of an embodiment of the method of the present invention for simultaneously refrigerating a first compartment and a second compartment is further illustrated, wherein the specific process for simultaneously refrigerating the first compartment and the second compartment may comprise: step S510 and step S520.

Step S510, if the first temperature difference is equal to the second temperature difference, that is, if the first temperature difference is equal to the second temperature difference, controlling the first compartment and the second compartment to cool simultaneously.

In step S520, the refrigeration of the first compartment is stopped when the current temperature of the first compartment reaches the shutdown point temperature thereof, and the refrigeration of the second compartment is stopped when the current temperature of the second compartment reaches the shutdown point temperature thereof.

For example: and if the temperature difference delta a of the temperature-changing chamber is equal to the temperature difference delta b of the freezing chamber, the electric switching valve switches 0 pulse to simultaneously refrigerate the two chambers, and the program is ended after both the temperature-changing chamber and the freezing chamber reach the stop point.

Therefore, when the temperature difference between the current temperature of the two chambers and the respective stop point temperature is equal, the two chambers are simultaneously refrigerated, and the synchronous optimization of the refrigerating effect of the two chambers can be ensured.

Through a large number of tests, the technical scheme of the embodiment is adopted, when two compartments have refrigeration requests at the same time, the two compartments are separately operated to be independently refrigerated without mutual influence, and the two compartments can be normally refrigerated and are balanced in refrigeration.

According to an embodiment of the present invention, there is also provided a control apparatus of a refrigerator corresponding to the control method of the refrigerator. Referring to fig. 6, a schematic diagram of an embodiment of the apparatus of the present invention is shown. The control device of the refrigerator is characterized in that a first compartment (such as a temperature-changing chamber), a second compartment (such as a freezing chamber) and a third compartment (such as a refrigerating chamber) are arranged in a refrigerating system of the refrigerator, a first compartment evaporator (such as a temperature-changing chamber evaporator) and a second compartment evaporator (such as a freezing chamber evaporator) of the refrigerator are connected in parallel, and the first compartment evaporator (such as a temperature-changing chamber evaporator) and the third compartment evaporator (such as a refrigerating chamber evaporator) are connected in series, so that the aim of separately refrigerating the first compartment (such as the temperature-changing chamber) and the second compartment (such as the freezing chamber) is fulfilled. The refrigeration system of the refrigerator can adopt an electric switching valve to switch and control the refrigeration process of different chambers. Electric switching valve: the valve is installed on a compressor bin and used as a switch for controlling the flow direction of a refrigerant, different numbers of pulses correspond to different valves to be closed or opened, no refrigerant flows into the valve when the valve is closed, and the corresponding chamber is not refrigerated. For example: one inlet valve and three outlet valves can be selected and respectively used as an inlet pipe A, an outlet pipe B of the temperature-changing chamber, an outlet C of the refrigerating chamber and an outlet D of the freezing chamber. 0 pulse time-varying greenhouse outlet pipe B is opened, a refrigerating chamber outlet C is closed, a freezing chamber outlet D is opened, 16 pulse time-varying greenhouse outlet pipe B is closed, a refrigerating chamber outlet C is opened, a freezing chamber outlet D is closed, 32 pulse time-varying greenhouse outlet pipe B is closed, a refrigerating chamber outlet C is closed, a freezing chamber outlet D is opened, 48 pulse time-varying greenhouse outlet pipe B is opened, a refrigerating chamber outlet C is closed, and a freezing chamber outlet D is closed. The control apparatus of the refrigerator may include: a determination unit 102 and a control unit 104.

In an alternative example, the determining unit 102 may be configured to determine a first temperature difference between a current temperature of the first compartment and a stop point temperature thereof and a second temperature difference between a current temperature of the second compartment and a stop point temperature thereof, that is, determine a first temperature difference between a first current temperature of the first compartment and a first stop point temperature of the first compartment and a second temperature difference between a second current temperature of the second compartment and a second stop point temperature of the second compartment, in case a request for cooling the first compartment and the second compartment simultaneously is received. The specific function and processing of the determination unit 102 are referred to in step S110.

For example: the refrigerator is operated in the original state, and the temperature a of the temperature-changing chamber sensor and the temperature b of the freezing chamber sensor are respectively recorded. In a state where the refrigerator has been stably operated, when two compartments (such as a variable temperature compartment and a freezing compartment except for a refrigerating compartment) have a request for cooling at the same time, a temperature difference between the two compartments with respect to a stop point is calculated by judging a variable temperature compartment temperature sensor temperature a and a freezing compartment temperature sensor temperature b, that is: calculating the temperature difference delta a of the temperature-changing room temperature sensor relative to the stop point A of the temperature-changing room: Δ a ═ a-a. And calculating a freezer compartment temperature difference Δ B of the freezer compartment temperature sensor temperature B relative to the freezer compartment shut-down point B: Δ B ═ B-B.

In an optional example, the determining unit 102 may be further configured to determine a magnitude relationship between the first temperature difference and the second temperature difference. For example: and judging the temperature difference delta a of the temperature-changing chamber and the temperature difference delta b of the freezing chamber. The specific function and processing of the determination unit 102 are also referred to in step S120.

In an optional example, the control unit 104 may be configured to control the first compartment and the second compartment to perform cooling according to a magnitude relationship between the first temperature difference and the second temperature difference. If a series-parallel connection type refrigerating system is adopted, and whether a valve of a certain chamber needs to be opened to flow the refrigerant is determined by judging the temperature difference between the current temperature of the chamber and the stop point. Here, the magnitude relationship between the first temperature difference and the second temperature difference may indicate the superiority and inferiority of the cooling effect of the first compartment and the second compartment. According to the refrigerating effect of the first compartment and the refrigerating effect of the second compartment, the first compartment and the second compartment are subjected to balanced refrigeration, when the difference between the refrigerating effects of the first compartment and the second compartment is large, the compartment with the poor refrigerating effect can be refrigerated preferentially, and the compartment with the good refrigerating effect is not refrigerated first, so that the refrigerating effect of the compartment with the poor refrigerating effect is prevented from being further deteriorated; when the difference of the refrigeration effects of the first chamber and the second chamber is smaller and equal, the first chamber and the second chamber are simultaneously refrigerated, and the synchronous optimization of the refrigeration effects of the two chambers is ensured. The specific function and processing of the control unit 104 are shown in step S130.

Alternatively, the control unit 104 controls the first compartment and the second compartment to refrigerate according to the magnitude relationship between the first temperature difference and the second temperature difference, and may include the following first control process.

The control unit 104 may be further configured to, when the first temperature difference is greater than the second temperature difference or the first temperature difference is smaller than the second temperature difference, that is, if the first temperature difference is not equal to the second temperature difference, use the compartment corresponding to the greater one of the first temperature difference and the second temperature difference as a compartment that is preferentially cooled, that is, preferentially cool the compartment corresponding to the greater one of the first temperature difference and the second temperature difference, and use the compartment corresponding to the smaller one of the first temperature difference and the second temperature difference as a compartment that is not preferentially cooled, that is, not cool the compartment corresponding to the smaller one of the first temperature difference and the second temperature difference. The specific functions and processes of the control unit 104 are also referred to in step S210.

The control unit 104 may be further configured to stop cooling the preferentially-cooled compartment after the current temperature of the preferentially-cooled compartment reaches the shutdown temperature thereof; and starting to refrigerate the compartments which are not preferentially refrigerated until the current temperature of the compartments which are not preferentially refrigerated reaches the shutdown temperature of the compartments, and stopping refrigerating the compartments which are not preferentially refrigerated. That is, after the current temperature of the compartment corresponding to the greater of the first temperature difference and the second temperature difference reaches the shutdown temperature thereof, the refrigeration of the compartment corresponding to the greater of the first temperature difference and the second temperature difference is stopped; and starting to refrigerate the compartment corresponding to the smaller of the first temperature difference and the second temperature difference until the current temperature of the compartment corresponding to the smaller of the first temperature difference and the second temperature difference reaches the shutdown point temperature, and then stopping refrigerating the compartment corresponding to the smaller of the first temperature difference and the second temperature difference. The specific functions and processes of the control unit 104 are also referred to in step S220.

Further optionally, the controlling unit 104 controls the first compartment and the second compartment to perform cooling according to a magnitude relationship between the first temperature difference and the second temperature difference, and may further include: in the process of preferentially cooling the compartment corresponding to the larger of the first temperature difference and the second temperature difference, the process of preferentially cooling the compartment corresponding to the larger of the first temperature difference and the second temperature difference may be adjusted according to whether the current temperature of the compartment corresponding to the larger of the first temperature difference and the second temperature difference reaches the temperature limit value thereof, and specifically, refer to the following exemplary description.

The control unit 104 may be further configured to, in a first control process, determine whether a current temperature of a compartment corresponding to a larger one of the first temperature difference and the second temperature difference reaches a temperature limit value at which the compartment needs to be immediately cooled and/or whether a current cooling time period for cooling a compartment corresponding to a smaller one of the first temperature difference and the second temperature difference reaches a set time period after preferentially cooling a compartment corresponding to a larger one of the first temperature difference and the second temperature difference and before the current temperature of the compartment corresponding to the larger one of the first temperature difference and the second temperature difference reaches the shutdown temperature thereof. The specific functions and processes of the control unit 104 are also referred to in step S310.

The control unit 104 may be further specifically configured to determine whether a current temperature difference between a current temperature of a compartment corresponding to a larger one of the first temperature difference and the second temperature difference and a shutdown point temperature of the compartment corresponding to the smaller one of the first temperature difference and the second temperature difference is reduced to be less than a set temperature threshold value, if the current temperature of the compartment corresponding to the smaller one of the first temperature difference and the second temperature difference reaches a temperature limit value at which the compartment needs to be immediately cooled, and/or a current cooling time period for cooling the compartment corresponding to the smaller one of the first temperature difference and the second temperature difference reaches a set time period. The specific functions and processes of the control unit 104 are also referred to in step S320.

The control unit 104 may be further configured to adjust a refrigeration sequence of the compartment corresponding to the greater of the first temperature difference and the second temperature difference and the compartment corresponding to the smaller of the first temperature difference and the second temperature difference if a current temperature difference between a current temperature of the compartment corresponding to the greater of the first temperature difference and the second temperature difference and a shutdown point temperature thereof has decreased to be smaller than a set temperature threshold. The specific functions and processes of the control unit 104 are also referred to in step S330.

More optionally, the adjusting, by the control unit 104, the cooling sequence of the compartment corresponding to the larger of the first temperature difference and the second temperature difference and the compartment corresponding to the smaller of the first temperature difference and the second temperature difference may include:

the control unit 104 may be further configured to suspend cooling of the compartment corresponding to the larger of the first temperature difference and the second temperature difference, and switch to preferentially cooling the compartment corresponding to the smaller of the first temperature difference and the second temperature difference. The specific functions and processes of the control unit 104 are also referred to in step S410.

The control unit 104 may be further configured to stop cooling the compartment corresponding to the smaller of the first temperature difference and the second temperature difference after the current temperature of the compartment corresponding to the smaller of the first temperature difference and the second temperature difference reaches the shutdown point temperature thereof; and restarting the refrigeration of the compartment corresponding to the larger of the first temperature difference and the second temperature difference, so as to stop the refrigeration of the compartment corresponding to the larger of the first temperature difference and the second temperature difference after the current temperature of the compartment corresponding to the larger of the first temperature difference and the second temperature difference reaches the shutdown temperature of the compartment. The specific function and processing of the control unit 104 are also referred to in step S420.

The control unit 104 may be further configured to, in a first control process, determine whether a current temperature of a compartment corresponding to a smaller one of the first temperature difference and the second temperature difference reaches a temperature limit value at which the compartment needs to be immediately cooled after preferentially cooling the compartment corresponding to the larger one of the first temperature difference and the second temperature difference and before a current temperature of the compartment corresponding to the larger one of the first temperature difference and the second temperature difference reaches a shutdown temperature thereof; further, if the current temperature of the compartment corresponding to the smaller of the first temperature difference and the second temperature difference reaches the temperature limit value of the compartment needing immediate refrigeration, determining whether the current temperature difference value between the current temperature of the compartment corresponding to the larger of the first temperature difference and the second temperature difference and the shutdown point temperature of the compartment is reduced to be smaller than a set temperature threshold value; furthermore, if the current temperature difference value between the current temperature of the compartment corresponding to the larger of the first temperature difference and the second temperature difference and the shutdown point temperature of the compartment is reduced to be smaller than a set temperature threshold value, the refrigeration of the compartment corresponding to the larger of the first temperature difference and the second temperature difference is suspended, and the compartment corresponding to the smaller of the first temperature difference and the second temperature difference is switched to be preferentially refrigerated; and stopping the refrigeration of the compartment corresponding to the smaller of the first temperature difference and the second temperature difference after the current temperature of the compartment corresponding to the smaller of the first temperature difference and the second temperature difference reaches the shutdown temperature thereof, and restarting the refrigeration of the compartment corresponding to the larger of the first temperature difference and the second temperature difference, so as to stop the refrigeration of the compartment corresponding to the larger of the first temperature difference and the second temperature difference after the current temperature of the compartment corresponding to the larger of the first temperature difference and the second temperature difference reaches the shutdown temperature thereof.

The control unit 104 may be further configured to, if the current temperature difference between the current temperature of the compartment corresponding to the greater of the first temperature difference and the second temperature difference and the shutdown point temperature thereof is not decreased to be smaller than the set temperature threshold, start to cool the compartment corresponding to the smaller of the first temperature difference and the second temperature difference while cooling the compartment corresponding to the greater of the first temperature difference and the second temperature difference; stopping the refrigeration of the compartment corresponding to the larger one of the first temperature difference and the second temperature difference after the current temperature of the compartment corresponding to the larger one of the first temperature difference and the second temperature difference reaches the shutdown point temperature of the compartment; and stopping refrigerating the compartment corresponding to the smaller one of the first temperature difference and the second temperature difference after the current temperature of the compartment corresponding to the smaller one of the first temperature difference and the second temperature difference reaches the shutdown temperature of the compartment. The specific functions and processes of the control unit 104 are also referred to in step S340.

The control unit 104 may be further configured to, in a first control process, determine whether a current temperature of a compartment corresponding to a smaller one of the first temperature difference and the second temperature difference reaches a temperature limit value at which the compartment needs to be immediately cooled after preferentially cooling the compartment corresponding to the larger one of the first temperature difference and the second temperature difference and before a current temperature of the compartment corresponding to the larger one of the first temperature difference and the second temperature difference reaches a shutdown temperature thereof; further, if the current temperature of the compartment corresponding to the smaller of the first temperature difference and the second temperature difference reaches the temperature limit value of the compartment needing immediate refrigeration, determining whether the current temperature difference value between the current temperature of the compartment corresponding to the larger of the first temperature difference and the second temperature difference and the shutdown point temperature of the compartment is reduced to be smaller than a set temperature threshold value; furthermore, if the current temperature difference value between the current temperature of the compartment corresponding to the larger of the first temperature difference and the second temperature difference and the shutdown point temperature thereof is not reduced to be less than the set temperature threshold value, the compartment corresponding to the smaller of the first temperature difference and the second temperature difference starts to be refrigerated while the compartment corresponding to the larger of the first temperature difference and the second temperature difference is refrigerated; stopping the refrigeration of the compartment corresponding to the larger one of the first temperature difference and the second temperature difference after the current temperature of the compartment corresponding to the larger one of the first temperature difference and the second temperature difference reaches the shutdown point temperature of the compartment; and stopping refrigerating the compartment corresponding to the smaller one of the first temperature difference and the second temperature difference after the current temperature of the compartment corresponding to the smaller one of the first temperature difference and the second temperature difference reaches the shutdown temperature of the compartment.

Alternatively, the control unit 104 may control the first compartment and the second compartment to perform cooling according to the magnitude relationship between the first temperature difference and the second temperature difference, and may further include the following second control process. Wherein the first control process and the second control process can perform only one control process in the same cooling situation.

The control unit 104 may be specifically configured to control the first compartment and the second compartment to cool simultaneously when the first temperature difference is equal to the second temperature difference, that is, if the first temperature difference is equal to the second temperature difference. The specific functions and processes of the control unit 104 are also referred to in step S510.

The control unit 104 may be further configured to stop cooling the first compartment after the current temperature of the first compartment reaches the shutdown point temperature of the first compartment, and stop cooling the second compartment after the current temperature of the second compartment reaches the shutdown point temperature of the second compartment. The specific functions and processes of the control unit 104 are also referred to in step S520.

Since the processes and functions implemented by the apparatus of this embodiment substantially correspond to the embodiments, principles and examples of the method shown in fig. 1 to 5, the description of this embodiment is not detailed, and reference may be made to the related descriptions in the foregoing embodiments, which are not repeated herein.

Through a large number of tests, the technical scheme of the invention is adopted, when two compartments have refrigeration requests at the same time, the two compartments are separately operated to be independently refrigerated, and the refrigeration sequence of the two compartments is adjusted in the process of independent refrigeration of the two compartments, so that the situation that the expected refrigeration effect cannot be achieved due to too much refrigerant consumption can be avoided.

According to an embodiment of the invention, a refrigerator corresponding to the control device of the refrigerator is also provided. The refrigerator may include: the control device of the refrigerator is described above.

Some direct-cooling multi-cycle refrigerators use: the valve controls the flow direction of the refrigerant, thereby controlling the refrigeration system of different chambers. When two compartments (such as a freezing compartment and a temperature-changing compartment) have refrigeration requests at the same time, both compartments perform refrigeration, but in this case, one of the compartments (such as the freezing compartment) generally has better refrigeration effect, so that the temperature is lower and lower; and the other compartment (such as a temperature-changing chamber) can be increasingly poor in refrigerating effect, so that the temperature cannot reach the set temperature.

In an alternative embodiment, the invention provides a refrigeration control method of a refrigerator, which does not require simultaneous refrigeration when two compartments simultaneously have refrigeration requests by modifying a control program; but two compartments are separately operated to be independently refrigerated without causing mutual influence, thereby reducing the occurrence of refrigeration faults caused by the fact that two compartments with refrigeration requests are simultaneously refrigerated, for example, the problem that the temperature of one compartment is lower and lower due to better and better refrigeration effect of the other compartment and the temperature of the other compartment cannot reach the set temperature due to worse and worse refrigeration effect of the other compartment in the traditional refrigeration system is solved, thereby achieving the technical effect that the two compartments can be normally refrigerated and have balanced refrigeration, and fundamentally solving the defect that the refrigeration system is controlled by the switch of a valve used in some refrigerators.

Furthermore, in the scheme of the invention, the sequence of the refrigerating system is changed into a series-parallel connection mode by adjusting the sequence of the refrigerating system, so that the problems that the flow of the refrigerant received by the freezing chamber in the traditional single system is small and hot gas is mixed are solved, the cost is saved, the situation that the predicted refrigerating effect cannot be achieved due to too much refrigerant consumption is avoided, the food spoilage is reduced, and the development concept of economy and energy conservation is embodied. Therefore, according to the scheme of the invention, the service life of the refrigerator is prolonged through the change of the scheme, the phenomenon that the refrigeration effect of the refrigerator is reduced due to external factors such as improper use of a user and the like can be avoided, and the use feeling of the user is improved.

In an alternative example, in the serial-parallel refrigeration system in the solution of the present invention, when two compartments (for example, a freezing compartment and a temperature-changing compartment, and the solution of the present invention does not relate to whether a refrigerating compartment needs to be refrigerated) have a refrigeration request at the same time, the refrigerant is preferentially supplied to the compartment a with a poor refrigeration effect, the compartment b with a good refrigeration effect is not refrigerated first, and the compartment b is refrigerated after the compartment a reaches the shutdown point.

When two compartments (such as a freezing compartment and a temperature-changing compartment) have refrigeration requests at the same time, the compartment with poor refrigeration effect is preferentially refrigerated, and the compartment with good refrigeration effect is not refrigerated. Here, the determination of the compartment having a poor cooling effect may include: compared with the two chambers, the temperature difference of one chamber compared with the shutdown point is larger than that of the other chamber compared with the shutdown point, and the freezing effect of the product cannot be achieved. For example: at the moment, the gear shifting room stop point A is set to be-15 ℃, the freezing room stop point B is set to be-18 ℃, and when the temperature difference of the shifting room compared with the stop point is larger than the temperature difference of the freezing room compared with the stop point, the shifting room is judged to need to increase the flow rate of the refrigerant to carry out refrigeration, so that the following program is started to carry out refrigeration.

Optionally, in the process of refrigerating the compartment a, if the compartment b reaches a certain temperature limit value, the valve is immediately switched to preferentially refrigerate the compartment b, or the compartment a and the compartment b are simultaneously refrigerated.

Optionally, in the process of refrigerating the compartment a, if the shutdown point is not reached after the compartment a is refrigerated for a period of time, the valve is immediately switched to preferentially refrigerate the compartment b, or the compartment a and the compartment b are refrigerated simultaneously.

Therefore, the control method in the scheme of the invention can avoid the situation that the temperature of one compartment is lower and the other compartment cannot reach the set temperature due to unbalanced refrigeration, and also avoid the situation that food is putrefactive due to overhigh temperature caused by that the other compartment cannot be refrigerated for a long time.

In an alternative embodiment, a specific implementation process of the scheme of the present invention can be exemplarily described with reference to the examples shown in fig. 7 to fig. 10.

Fig. 7 is a schematic structural diagram of a serial-parallel refrigeration system according to an embodiment of the refrigerator of the present invention. As shown in fig. 7, the serial-parallel type refrigeration system of the refrigerator may include: a refrigerating chamber evaporator arranged in the refrigerating chamber, a freezing chamber evaporator arranged in the freezing chamber, and a temperature-variable chamber evaporator arranged in the temperature-variable chamber. The first end of the refrigerating chamber evaporator is communicated to the first end of the freezing chamber evaporator and the first end of the temperature-changing chamber evaporator respectively after passing through the refrigerating capillary tube, the refrigerating chamber outlet C, the electric switching valve, the inlet tube A, the drying tube, the condenser and the compressor. The second end of the freezing chamber evaporator is communicated to the electric switching valve after passing through the freezing chamber capillary tube and the freezing chamber outlet D. The second end of the temperature-changing chamber evaporator and the second end of the refrigerating chamber evaporator are communicated to the electric switching valve after passing through a temperature-changing chamber capillary tube and a temperature-changing chamber outlet pipe B.

Wherein, the electric switch valve: the valve is installed on a compressor bin and used as a switch for controlling the flow direction of a refrigerant, different numbers of pulses correspond to different valves to be closed or opened, no refrigerant flows into the valve when the valve is closed, and the corresponding chamber is not refrigerated. The electric valve used in the scheme of the invention can adopt a valve with one inlet and three outlets, namely an inlet pipe A, an outlet pipe B of a temperature-changing chamber, an outlet C of a refrigerating chamber and an outlet D of a freezing chamber. The method comprises the following steps of opening an outlet pipe B of a 0-pulse time-varying greenhouse, closing an outlet C of a refrigerating chamber and opening an outlet D of a freezing chamber, closing an outlet pipe B of the 16-pulse time-varying greenhouse, opening an outlet C of the refrigerating chamber and closing an outlet D of the freezing chamber, closing an outlet pipe B of the 32-pulse time-varying greenhouse, closing an outlet C of the refrigerating chamber and opening an outlet D of the freezing chamber, opening an outlet B of the 48-pulse time-varying greenhouse, closing an outlet C of the refrigerating chamber and closing an outlet D of the.

The capillary tube can play the role of throttling and depressurizing, so that the high-pressure low-temperature liquid in the condenser is changed into low-temperature low-pressure liquid after passing through the capillary tube, and then enters the evaporator for evaporation.

Refrigerant, which can be stored in the compressor and used as a medium for energy conversion to transfer heat energy and produce a freezing effect, is also called refrigerant, and R600a (isobutane, a common refrigerant for refrigerators) is generally used in refrigerators.

Generally, in the three-system refrigerator shown in fig. 7, the refrigerating chamber is preferentially refrigerated, the temperature-changing chamber is arranged secondly, and the freezing chamber is arranged finally, and the capillary flow rate is designed only at the refrigerant flow rate required by the freezing chamber of one system, so that when the three systems all have refrigerating requests, the refrigerant flows to the refrigerating chamber firstly, the temperature-changing chamber is arranged secondly, and the freezing chamber is arranged finally, so that the refrigerant flowing into the freezing chamber is insufficient and is mixed with the evaporated hot gas, the temperature of the freezing chamber is higher and higher, and the refrigerating effect is poor. The freezing chamber has continuous refrigeration request, the valve is continuously opened, but the valve can not reach the set value, but the temperature of the refrigerating chamber and the temperature-changing chamber is lower and lower at the moment, and a vicious circle is formed.

According to the scheme of the invention, by adjusting the control scheme, the refrigeration system is modified and perfected on the basis of the original control of the refrigerator, and the refrigeration system is modified into a series-parallel connection type, and the following exemplary description can be specifically referred.

Fig. 10 is a schematic flow chart of a refrigeration process of an embodiment of the refrigerator according to the present invention. Aiming at the problem of unbalanced refrigeration of two chambers at the same time, the refrigerator adopts a series-parallel connection type refrigeration system, and determines whether a valve of which chamber needs to be opened to flow in a refrigerant or not by judging the temperature difference between the current temperature of the chamber and a stop point. In the series-parallel connection type refrigerating system of the refrigerator, a refrigerating chamber evaporator is connected with a temperature-variable chamber evaporator in series, and a freezing chamber evaporator is connected with the temperature-variable chamber evaporator in parallel. In the series-parallel connection type refrigerating system of the refrigerator, except for the refrigerating chamber and the temperature-changing chamber which are connected in series, the refrigerating chamber and the temperature-changing chamber as well as the freezing chamber and the temperature-changing chamber are connected in parallel. As shown in fig. 10, a flow of a refrigeration process of a refrigerator may include:

step 1, the refrigerator runs in the original state, and the temperature a of the temperature-changing chamber sensor and the temperature b of the freezing chamber sensor are recorded respectively.

Step 2, in the state that the refrigerator is stably operated, when two compartments (such as a temperature-changing chamber and a freezing chamber except a refrigerating chamber) have refrigeration requests at the same time, calculating the temperature difference of the two compartments relative to a stop point by judging the temperature a of the temperature-changing chamber temperature sensor and the temperature b of the freezing chamber temperature sensor, namely: calculating the temperature difference delta a of the temperature-changing room temperature sensor relative to the stop point A of the temperature-changing room: Δ a ═ a-a; and calculating a freezer compartment temperature difference Δ B of the freezer compartment temperature sensor temperature B relative to the freezer compartment shut-down point B: Δ B ═ B-B. Further, the magnitudes of the temperature difference Δ a of the variable temperature chamber and the temperature difference Δ b of the freezing chamber are judged, and step 21, step 22 or step 23 is selectively performed according to the judgment result.

And step 21, if the temperature difference delta a of the variable temperature chamber is greater than the temperature difference delta b of the freezing chamber, judging that the variable temperature chamber needs to be cooled more, namely the cooling effect of the variable temperature chamber is poorer.

In one example, when it is necessary to preferentially cool the variable temperature chamber, the electric switching valve receives 48 pulse signals, the variable temperature chamber valve B corresponding to the electric switching valve is opened, the freezing chamber is kept as it is, the freezing chamber valve D corresponding to the electric switching valve is closed, and the refrigerant flows into the variable temperature chamber through the variable temperature chamber valve B, so that the system preferentially cools the variable temperature chamber.

Further, the refrigeration is stopped when the temperature-changing chamber reaches the condition of stopping the refrigeration (namely the temperature of the temperature-changing chamber temperature sensor reaches the temperature-changing chamber stop point, for example, the temperature of the temperature-changing chamber temperature sensor is less than or equal to minus 15 ℃), the electric switching valve receives a 32 pulse signal, the electric switching valve is closed corresponding to the temperature-changing chamber valve B, the refrigeration chamber starts to refrigerate, the electric switching valve is opened corresponding to the refrigeration chamber valve D to refrigerate, the refrigeration is stopped until the refrigeration chamber also reaches the required refrigeration condition (namely the temperature of the refrigeration chamber temperature sensor reaches the refrigeration chamber stop point), the electric switching valve receives a 16 pulse signal, and the refrigeration chamber and the temperature.

In an optional example, in the process of preferential refrigeration of the temperature-varying chamber, if the temperature of the freezing chamber reaches the temperature limit value which needs immediate refrigeration and is-10 ℃ (the temperature-varying chamber limit value is-7 ℃), and the temperature difference delta a of the temperature-varying chamber relative to the stop point is less than 3 ℃, the electric switching valve immediately switches 32 pulses to preferentially refrigerate the freezing chamber, the freezing chamber is switched to the temperature-varying chamber for refrigeration after the freezing chamber reaches the stop point, and the program is ended after the temperature-varying chamber reaches the stop point.

Optionally, if the temperature of the freezing chamber reaches the temperature limit value of-10 ℃ requiring immediate refrigeration, and the temperature difference delta a of the temperature change chamber relative to the stop point is more than or equal to 3 ℃, the electric switching valve switches 0 pulse to simultaneously refrigerate the two chambers, and the program is ended after both the two chambers reach the stop point. This procedure prevents one compartment from cooling causing the other compartment to rise back too high in temperature, causing food spoilage.

For example: if the temperature of the temperature-changing chamber rises to-7 ℃ in the refrigerating process of the freezing chamber and the temperature of the freezing chamber is-16 ℃, switching 48 pulses to refrigerate the temperature-changing chamber, switching 32 pulses to refrigerate the freezing chamber after the stop point is reached, and ending after the stop point.

In an optional example, in the process of preferential cooling of the temperature-varying chamber, if the temperature-varying chamber does not reach the shutdown point after a certain time X (the time is determined by the cooling capacity test data of the test center, for example, X ═ 60min), and the temperature difference Δ a of the temperature-varying chamber relative to the shutdown point is less than 3 ℃ or 6 ℃, the electric switching valve immediately switches 32 pulses to preferentially cool the freezing chamber, the electric switching valve switches to the temperature-varying chamber to cool the freezing chamber after the freezing chamber reaches the shutdown point, and the program ends after the temperature-varying chamber reaches the shutdown point.

Optionally, if the temperature difference Δ a between the temperature-changing chamber and the shutdown point is greater than or equal to 3 ℃ or 6 ℃, the electric switching valve switches 0 pulse to simultaneously refrigerate the two chambers, and the program is ended after both reach the shutdown point. This procedure prevents one compartment from cooling too long to the point of shutdown, causing the temperature of another compartment to rise too high, causing food spoilage.

For example: and if the freezing chamber does not reach the stop point after 60 minutes and the temperature of the temperature-changing chamber is-8 ℃, switching 0 pulse to simultaneously refrigerate the two chambers, and ending after the stop point is reached.

Referring to the example shown in fig. 7, the refrigerator capable of separately refrigerating may include a compressor, a drying pipe, an electric switching valve, a condenser, a capillary tube, a refrigerating chamber evaporator, a freezing chamber evaporator, and a temperature-variable chamber evaporator, where the refrigerating chamber evaporator is connected in series with the freezing chamber evaporator, and the freezing chamber evaporator is connected in parallel with the temperature-variable chamber evaporator, so as to achieve the purpose of separately refrigerating the temperature-variable chamber and the freezing chamber.

And step 22, if the temperature difference delta a of the temperature-changing chamber is judged to be equal to the temperature difference delta b of the freezing chamber, the electric switching valve switches 0 pulse to simultaneously refrigerate the two chambers, and the program is ended after the temperature difference delta a of the temperature-changing chamber and the temperature difference delta b of the freezing chamber reach the stop point.

And step 23, if the judgment result is that the temperature difference delta a of the variable temperature chamber is less than the temperature difference delta b of the freezing chamber, judging that the refrigerating effect of the freezing chamber is worse, and switching 32 pulses of the electric switching valve to preferentially refrigerate the freezing chamber. The procedure of preferential refrigeration of the freezing chamber can be referred to the degree of preferential refrigeration of the temperature-variable chamber. The procedure can avoid the problem that the refrigerating effect of the chambers is poor due to insufficient refrigerant flow and doped evaporation hot gas caused by simultaneous refrigeration of the two chambers. The condition of misjudgment can also be avoided by judging and controlling the refrigeration sequence through the temperature difference, the flow direction of the refrigerant is flexibly adjusted, and the simultaneous refrigeration or the independent refrigeration is judged according to the temperature difference.

For example: the temperature-variable chamber stop point A is-15 ℃, the freezing chamber stop point B is-18 ℃, the temperature a of the temperature-variable chamber sensor is-12 ℃, the temperature B of the freezing chamber sensor is-13 ℃, the temperature difference delta a of the temperature-variable chamber is 3 ℃, the temperature difference delta B of the freezing chamber is 5 ℃, the temperature difference delta a of the temperature-variable chamber is less than the temperature difference delta B of the freezing chamber, the refrigerating effect of the freezing chamber is judged to be worse, the electric switching valve switches 32 pulses to preferentially refrigerate the freezing chamber, the refrigeration is stopped when the freezing chamber reaches the stop point, the electric switching valve receives 48 pulse signals to refrigerate the temperature-variable chamber, and the process is finished when the stop point.

In conclusion, in the serial-parallel type refrigeration system in the scheme of the invention, each chamber can be separately operated, each loop independently operates to independently refrigerate without causing mutual influence, and the temperature difference between the loop and the stop point is judged to determine which chamber needs to be refrigerated more, so that misjudgment is reduced to ensure more accurate refrigeration, and the occurrence of refrigeration faults caused by the fact that two chambers refrigerate simultaneously and one chamber has poor refrigeration effect is reduced, thereby achieving the purposes that the two chambers can refrigerate normally and refrigerate in a balanced manner. Compared with the scheme of refrigerating two compartments simultaneously, the scheme of the invention can fundamentally overcome the defect that the refrigerating system is controlled by the valve switch in the current refrigerator industry; the service life of the refrigerator is prolonged, the phenomenon that the refrigeration effect of the refrigerator is reduced due to external factors such as improper use of a user is avoided, and the use feeling of the user is improved; the cost can be saved, the situation that the expected refrigeration effect cannot be achieved due to the fact that too much refrigerant is consumed is avoided, the food spoilage situation is reduced, and the development concept of economy and energy conservation is embodied.

Since the processes and functions implemented by the refrigerator of this embodiment substantially correspond to the embodiments, principles and examples of the apparatus shown in fig. 6, the descriptions of this embodiment are not detailed herein, and refer to the related descriptions in the embodiments, which are not described herein again.

Through a large number of tests, the technical scheme of the invention ensures the refrigeration balance of the two compartments by independently refrigerating the compartment with poor refrigeration effect when the two compartments have refrigeration requests at the same time and refrigerating the compartment with good refrigeration effect after the compartment with poor refrigeration effect reaches a shutdown point.

According to an embodiment of the present invention, there is also provided a storage medium corresponding to a control method of a refrigerator, the storage medium including a stored program, wherein an apparatus in which the storage medium is located is controlled to execute the control method of the refrigerator described above when the program is executed.

Since the processing and functions implemented by the storage medium of this embodiment substantially correspond to the embodiments, principles, and examples of the methods shown in fig. 1 to fig. 5, details are not described in the description of this embodiment, and reference may be made to the related descriptions in the foregoing embodiments, which are not described herein again.

Through a large number of tests, the technical scheme of the invention is adopted, when two compartments have refrigeration requests at the same time, the compartment with poor refrigeration effect is independently refrigerated firstly, and in the process of independently refrigerating the compartment with poor refrigeration effect, if the compartment with good refrigeration effect reaches the temperature limit value, the compartment with good refrigeration effect is switched to the compartment with good refrigeration effect to be independently refrigerated preferentially, so that the condition that the food is putrefactive because the compartment with good refrigeration effect is not refrigerated for a long time can be avoided.

According to an embodiment of the present invention, there is also provided a processor corresponding to a control method of a refrigerator, the processor being configured to execute a program, wherein the program executes the control method of the refrigerator described above.

Since the processing and functions implemented by the processor of this embodiment substantially correspond to the embodiments, principles, and examples of the methods shown in fig. 1 to fig. 5, details are not described in the description of this embodiment, and reference may be made to the related descriptions in the foregoing embodiments, which are not described herein again.

Through a large number of tests, the technical scheme of the invention is adopted, when two compartments have refrigeration requests at the same time, the compartment with poor refrigeration effect is independently refrigerated firstly, and in the process of independently refrigerating the compartment with poor refrigeration effect, if the compartment with poor refrigeration effect does not reach a shutdown point for a long time, the compartment with good refrigeration effect is switched to the compartment with good refrigeration effect for independent refrigeration preferentially, so that the situation that the compartment with good refrigeration effect is not refrigerated for a long time to cause food spoilage can be avoided.

In summary, it is readily understood by those skilled in the art that the advantageous modes described above can be freely combined and superimposed without conflict.

The above description is only an example of the present invention, and is not intended to limit the present invention, and it is obvious to those skilled in the art that various modifications and variations can be made in the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. The control method of the refrigerator is characterized in that a first compartment evaporator and a second compartment evaporator of the refrigerator are connected in parallel, and the first compartment evaporator and a third compartment evaporator are connected in series; the control method of the refrigerator comprises the following steps:

under the condition that a request for cooling the first compartment and the second compartment simultaneously is received, determining a first temperature difference between the current temperature of the first compartment and the stop point temperature of the first compartment, and determining a second temperature difference between the current temperature of the second compartment and the stop point temperature of the second compartment;

determining a magnitude relationship between the first temperature difference and the second temperature difference;

and controlling the first compartment and the second compartment to refrigerate according to the magnitude relation between the first temperature difference and the second temperature difference.

2. The method as claimed in claim 1, wherein the controlling the first compartment and the second compartment to cool comprises:

if the first temperature difference is not equal to the second temperature difference, preferentially refrigerating the compartment corresponding to the larger one of the first temperature difference and the second temperature difference, and not refrigerating the compartment corresponding to the smaller one of the first temperature difference and the second temperature difference;

stopping refrigerating the compartment corresponding to the larger one of the first temperature difference and the second temperature difference after the current temperature of the compartment corresponding to the larger one of the first temperature difference and the second temperature difference reaches the shutdown temperature of the compartment; and starting to refrigerate the compartment corresponding to the smaller of the first temperature difference and the second temperature difference until the current temperature of the compartment corresponding to the smaller of the first temperature difference and the second temperature difference reaches the shutdown point temperature, and then stopping refrigerating the compartment corresponding to the smaller of the first temperature difference and the second temperature difference.

3. The method of claim 2, wherein the controlling the first compartment and the second compartment to cool further comprises:

after preferentially refrigerating the compartment corresponding to the larger one of the first temperature difference and the second temperature difference and before the current temperature of the compartment corresponding to the larger one of the first temperature difference and the second temperature difference reaches the shutdown temperature of the compartment, determining whether the current temperature of the compartment corresponding to the smaller one of the first temperature difference and the second temperature difference reaches the temperature limit value of the compartment needing immediate refrigeration and/or whether the current refrigerating time length of the compartment corresponding to the smaller one of the first temperature difference and the second temperature difference reaches the set time length;

if the current temperature of the compartment corresponding to the smaller of the first temperature difference and the second temperature difference reaches the temperature limit value of the compartment needing immediate refrigeration and/or the current refrigeration time length for refrigerating the compartment corresponding to the smaller of the first temperature difference and the second temperature difference reaches the set time length, determining whether the current temperature difference value between the current temperature of the compartment corresponding to the larger of the first temperature difference and the second temperature difference and the shutdown point temperature of the compartment corresponding to the larger of the first temperature difference and the second temperature difference is reduced to be smaller than the set temperature threshold value;

if the current temperature difference value between the current temperature of the compartment corresponding to the larger of the first temperature difference and the second temperature difference and the shutdown point temperature of the compartment is reduced to be smaller than a set temperature threshold value, adjusting the refrigeration sequence of the compartment corresponding to the larger of the first temperature difference and the second temperature difference and the compartment corresponding to the smaller of the first temperature difference and the second temperature difference;

if the current temperature difference value between the current temperature of the compartment corresponding to the larger of the first temperature difference and the second temperature difference and the shutdown point temperature of the compartment is not reduced to be smaller than the set temperature threshold value, the compartment corresponding to the smaller of the first temperature difference and the second temperature difference starts to be refrigerated while the compartment corresponding to the larger of the first temperature difference and the second temperature difference is refrigerated.

4. The method of claim 3, wherein adjusting the cooling sequence of the compartment corresponding to the greater of the first temperature difference and the second temperature difference and the compartment corresponding to the lesser of the first temperature difference and the second temperature difference comprises:

suspending the refrigeration of the compartment corresponding to the larger of the first temperature difference and the second temperature difference, and switching to preferentially refrigerating the compartment corresponding to the smaller of the first temperature difference and the second temperature difference;

stopping refrigerating the compartment corresponding to the smaller one of the first temperature difference and the second temperature difference after the current temperature of the compartment corresponding to the smaller one of the first temperature difference and the second temperature difference reaches the shutdown point temperature of the compartment; and restarting the refrigeration of the compartment corresponding to the larger of the first temperature difference and the second temperature difference, so as to stop the refrigeration of the compartment corresponding to the larger of the first temperature difference and the second temperature difference after the current temperature of the compartment corresponding to the larger of the first temperature difference and the second temperature difference reaches the shutdown temperature of the compartment.

5. The method of controlling a refrigerator according to any one of claims 1 to 4, wherein the first compartment and the second compartment are controlled to perform cooling, further comprising:

if the first temperature difference is equal to the second temperature difference, controlling the first compartment and the second compartment to refrigerate simultaneously;

the refrigeration of the first compartment is stopped after the current temperature of the first compartment reaches its shutdown point temperature, and the refrigeration of the second compartment is stopped after the current temperature of the second compartment reaches its shutdown point temperature.

6. The control device of the refrigerator is characterized in that a first compartment evaporator and a second compartment evaporator of the refrigerator are connected in parallel, and the first compartment evaporator and a third compartment evaporator are connected in series; the control device of the refrigerator comprises:

the device comprises a determining unit, a judging unit and a control unit, wherein the determining unit is used for determining a first temperature difference between the current temperature of the first chamber and the shutdown point temperature of the first chamber and determining a second temperature difference between the current temperature of the second chamber and the shutdown point temperature of the second chamber under the condition of receiving a request for cooling the first chamber and the second chamber simultaneously;

the determining unit is further used for determining the magnitude relation between the first temperature difference and the second temperature difference;

and the control unit is used for controlling the first compartment and the second compartment to refrigerate according to the magnitude relation between the first temperature difference and the second temperature difference.

7. The control device of the refrigerator as claimed in claim 6, wherein the control unit controls the first compartment and the second compartment to cool, comprising:

8. The control apparatus of a refrigerator according to claim 7, wherein the control unit controls the first compartment and the second compartment to perform cooling, further comprising:

9. The control device of the refrigerator according to claim 8, wherein the control unit adjusts a cooling sequence of the compartment corresponding to the larger of the first temperature difference and the second temperature difference and the compartment corresponding to the smaller of the first temperature difference and the second temperature difference, and includes:

10. The control apparatus of a refrigerator according to any one of claims 6 to 9, wherein the control unit controls the first compartment and the second compartment to cool, further comprising:

11. A refrigerator, characterized by comprising: the control device of the refrigerator according to any one of claims 6 to 10.

12. A storage medium characterized by comprising a stored program, wherein an apparatus in which the storage medium is located is controlled to perform the control method of the refrigerator according to any one of claims 1 to 5 when the program is executed.

13. A processor, characterized in that the processor is configured to execute a program, wherein the program executes the control method of the refrigerator according to any one of claims 1 to 5.