CN111503988B - Control method and control device for refrigerator, refrigerator and storage medium - Google Patents
Control method and control device for refrigerator, refrigerator and storage medium Download PDFInfo
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- CN111503988B CN111503988B CN202010113628.8A CN202010113628A CN111503988B CN 111503988 B CN111503988 B CN 111503988B CN 202010113628 A CN202010113628 A CN 202010113628A CN 111503988 B CN111503988 B CN 111503988B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D29/00—Arrangement or mounting of control or safety devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2600/00—Control issues
- F25D2600/06—Controlling according to a predetermined profile
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
Abstract
The invention relates to the field of refrigerator control, and discloses a control method and a control device for a refrigerator, the refrigerator and a storage medium. The refrigerating temperature of the refrigerating chamber is obtained by determining that the refrigerating chamber meets the refrigerating requirement, and the work of the compensating heater is controlled, so that the refrigerating temperature is kept between a first temperature threshold value and a second temperature threshold value, wherein the first temperature threshold value is associated with the refrigerating stop temperature of the refrigerating chamber, and the second temperature threshold value is associated with the refrigerating start-up temperature of the refrigerating chamber. Therefore, when the freezing chamber has refrigeration requirement, the temperature of the refrigerating chamber is above the refrigeration starting temperature, so that the compressor is in an opening state, and the temperature of the freezing chamber is reduced until the refrigeration requirement is met. Therefore, the situation that the temperature of the freezing chamber cannot reach the required freezing and refrigerating temperature when the supplementary heating wire is closed due to the fact that the freezing chamber has the refrigerating requirement and the temperature of the refrigerating chamber is low in the prior art is overcome.
Description
Technical Field
The invention relates to the field of refrigerator control, in particular to a control method and a control device for a refrigerator, the refrigerator and a storage medium.
Background
The existing single system refrigerator, namely a refrigerator with a direct cooling or air direct cooling structure, has the advantages that evaporators for refrigerating a refrigerating chamber and a freezing chamber in the refrigerator are in a series structure, the starting and stopping of a compressor are determined according to the room temperature and the set temperature of the refrigerating chamber, if the temperature of the refrigerating chamber is higher than the starting temperature of the compressor, the compressor is controlled to be started, and if the temperature of the refrigerating chamber is lower than the shutdown temperature of the compressor, the compressor is controlled to be stopped. For avoiding when ambient temperature is lower, because the temperature of walk-in satisfies cold-stored temperature demand and does not open the compressor for a long time and lead to the temperature rise of freezer can not satisfy its freezer temperature demand, generally set up compensation heater like the compensation heater strip in the walk-in, work through the compensation heater strip promotes the walk-in temperature and makes the compressor open in order to realize the refrigeration to the freezer, make the temperature of freezer satisfy the demand, but the start-stop control of present compensation heater strip is generally just opened when being less than the default and the compressor is closed through the room temperature, the higher problem of freezer temperature when its control still can bring ambient temperature when satisfying the demand.
Disclosure of Invention
The invention aims to overcome the problem that the temperature of a freezing chamber cannot meet the refrigeration requirement due to inaccurate control of a compensation heating wire in a refrigerator in the prior art, and provides a control method, a control device, the refrigerator and a storage medium for the refrigerator.
In order to achieve the above object, a first aspect of the present invention provides a control method for a refrigerator. The refrigerator comprises a refrigerating chamber, a freezing chamber and a refrigerating system, wherein the refrigerating system comprises a refrigerating evaporator and a freezing evaporator, the refrigerating evaporator and the freezing evaporator are connected in series, the refrigerator is provided with a compensating heater for heating and compensating the refrigerating chamber, the refrigerating system is driven by a compressor, and the control method comprises the following steps:
determining that the freezing chamber meets the refrigeration requirement;
acquiring the refrigerating temperature of the refrigerating chamber; and
the compensating heater is controlled to maintain the refrigeration temperature between a first temperature threshold associated with a refrigeration shutdown temperature of the refrigeration compartment and a second temperature threshold associated with a refrigeration startup temperature of the refrigeration compartment.
Optionally, the first temperature threshold is a first temperature value higher than the refrigeration shutdown temperature.
Optionally, the second temperature threshold is higher than the refrigeration startup temperature by a second temperature value.
Optionally, the first temperature value and the second temperature value range from 1 ℃ to 3 ℃.
Optionally, the first temperature value and the second temperature value are related to an ambient temperature at which the refrigerator is located.
Optionally, the control method further includes:
determining that there is no refrigeration demand in the freezer compartment;
keeping the compensating heater off.
In a second aspect of the present invention, there is provided a control device for a refrigerator, wherein the refrigerator includes a refrigerating chamber, a freezing chamber, and a refrigeration system, the refrigeration system includes a refrigerating evaporator and a freezing evaporator, the refrigerating evaporator and the freezing evaporator are connected in series, the refrigerator is provided with a compensation heater for compensating heating of the refrigerating chamber, the refrigeration system is driven by a compressor, the control device includes:
a refrigerating temperature sensor installed in the refrigerating chamber to detect a temperature of the refrigerating chamber;
a processor configured to: determining that the freezing chamber meets the refrigeration requirement; acquiring the refrigerating temperature of the refrigerating chamber from a refrigerating temperature sensor; the compensating heater is controlled to maintain the refrigeration temperature between a first temperature threshold associated with a refrigeration shutdown temperature of the refrigeration compartment and a second temperature threshold associated with a refrigeration startup temperature of the refrigeration compartment.
Optionally, the first temperature threshold is a first temperature value higher than the refrigeration shutdown temperature.
Optionally, the second temperature threshold is higher than the refrigeration startup temperature by a second temperature value.
Optionally, the first temperature value and the second temperature value range from 1 ℃ to 3 ℃.
Optionally, the first temperature value and the second temperature value are related to an ambient temperature in which the refrigerator is located.
Optionally, the processor is further configured to:
determining that there is no refrigeration demand in the freezer compartment;
keeping the compensating heater off.
In a third aspect of the invention, a refrigerator is provided, and the refrigerator comprises the control device for the refrigerator.
In a fourth aspect of the present invention, there is provided a machine-readable storage medium having stored thereon computer-readable instructions for, when executed by a processor, enabling the processor to execute a control method for a refrigerator according to the above.
According to the control method for the refrigerator, the refrigerating temperature of the refrigerating chamber is obtained under the condition that the freezing chamber meets the refrigerating requirement, and the work of the compensating heater is controlled, so that the refrigerating temperature is kept between the first temperature threshold and the second temperature threshold, wherein the first temperature threshold is associated with the refrigerating stop temperature of the refrigerating chamber, and the second temperature threshold is associated with the refrigerating start-up temperature of the refrigerating chamber. Therefore, when the freezing chamber has a refrigerating requirement, the temperature of the refrigerating chamber is higher than the refrigerating starting temperature of the freezing chamber, so that the compressor is in an opening state, and the temperature of the freezing chamber is reduced until the refrigerating requirement of the freezing chamber is met. Therefore, the situation that the temperature of the freezing chamber cannot reach the required freezing and refrigerating temperature when the supplementary heating wire is closed due to the fact that the freezing chamber has the refrigerating requirement and the temperature of the refrigerating chamber is low in the prior art is overcome.
Drawings
Fig. 1 schematically shows a flowchart of a control method for a refrigerator according to an embodiment of the present invention;
FIG. 2 is a schematic diagram illustrating a first temperature threshold, a second temperature threshold, a refrigeration shutdown temperature, and a refrigeration startup temperature in accordance with a preferred embodiment of the present invention;
fig. 3 schematically shows a block diagram of a control apparatus for a refrigerator according to an embodiment of the present invention.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
It should be noted that if directional indications (such as upper, lower, left, right, front and rear \8230;) are involved in the embodiment of the present invention, the directional indications are only used for explaining the relative positional relationship between the components in a specific posture (as shown in the figure), the motion situation, etc., and if the specific posture is changed, the directional indications are correspondingly changed.
In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between the various embodiments can be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not be within the protection scope of the present invention.
The embodiment of the invention provides a control method for a refrigerator. The refrigerator is a single-system refrigeration refrigerator, the interior of the refrigerator comprises a plurality of compartments such as a refrigerating chamber and a freezing chamber, and can also comprise a temperature-changing compartment, and a refrigeration system mainly formed by connecting an evaporator, a condenser, a refrigerant pipeline and a compressor is also arranged in the refrigerator so as to refrigerate each compartment of the refrigerator. Wherein, each chamber such as a refrigerating chamber, a freezing chamber and a temperature changing chamber is respectively provided with a refrigerating chamber evaporator and a freezing chamber evaporator which are connected in series in turn. Each compartment is provided with a temperature sensor such as a refrigerating temperature sensor of a refrigerating chamber, a freezing temperature sensor of a freezing chamber, and an environment temperature sensor for detecting the environment temperature of the refrigerator. The whole refrigeration system of the refrigerator controls the compressor to be started and stopped according to the temperature detected by the refrigeration temperature sensor, namely, the compressor is started when the refrigeration requirement exists in the refrigerating chamber, and the compressor is controlled when the refrigeration requirement does not exist in the refrigerating chamber. The single system refrigerator is preferably a direct air-cooled refrigerator, i.e., the freezing chamber is air-cooled and the refrigerating chamber is direct-cooled. The refrigerating requirement of the refrigerating chamber is generally determined by the set temperature of the refrigerating chamber, the ambient temperature and the refrigerating chamber temperature detected by the refrigerating temperature sensor, if the refrigerating chamber temperature is higher than the on-compression temperature of the refrigerating chamber, the compressor is controlled to be on, and if the refrigerating chamber temperature is lower than the off-compression temperature of the refrigerating chamber, the compressor is controlled to be off. And the freezer generally still is provided with the fan to the freezer transport air conditioning, when the compressor is opened, if the freezer has the refrigeration demand, opens in order to carry air conditioning to the freezer through control fan for the temperature in the freezer satisfies freezing demand temperature, and if the temperature in the freezer reaches freezing demand temperature then control the fan and close and stop to carry air conditioning to the freezer. The specific control rules for controlling the refrigerating chamber and the freezing chamber to achieve the respective refrigerating temperature requirements belong to the prior art, and are not described herein again. In order to prevent the temperature of the freezing chamber from being too high to meet the refrigerating requirement of the freezing chamber, a compensation heater such as a compensation heating wire is arranged in the refrigerating chamber to heat the refrigerating chamber, so that the temperature of the refrigerating chamber is increased to meet the starting requirement of the compressor, and the freezing chamber is also refrigerated.
Fig. 1 schematically shows a flowchart of a control method for a refrigerator according to an embodiment of the present invention. Referring to fig. 1, the control method includes:
step S100, determining that a freezing chamber meets the refrigeration requirement;
step S200, obtaining the refrigerating temperature of the refrigerating chamber;
in step S300, the compensation heater is controlled to maintain the refrigerating temperature between a first temperature threshold and a second temperature threshold, wherein the first temperature threshold is associated with the refrigerating shutdown temperature of the refrigerating chamber, and the second temperature threshold is associated with the refrigerating startup temperature of the refrigerating chamber.
In step S100, the refrigeration requirement of the freezing chamber depends on the set temperature of the freezing chamber, the ambient temperature and the freezing chamber temperature detected by the freezing temperature sensor, and the temperature of the refrigeration requirement are determined according to the set temperature of the freezing chamber and the ambient temperature, and then compared with the freezing chamber temperature, it can be determined whether the refrigeration requirement is currently required. If the current set temperature of the freezing chamber is-15 ℃ and the ambient temperature is 5 ℃, the determined temperature of the refrigeration requirement is-17 ℃, and the temperature of the refrigeration requirement is-14 ℃, then according to the comparison between the freezing chamber temperature and the ambient temperature, if the temperature is higher than the refrigeration requirement, the refrigeration requirement is determined to be met, and if the temperature is lower than the temperature of the refrigeration requirement, the refrigeration requirement is determined not to be met.
After it is determined that the freezing chamber has a cooling demand, the refrigerating chamber temperature may be detected by the refrigerating chamber temperature sensor and the operation of the compensating heating wire may be controlled according to the refrigerating chamber temperature to maintain the temperature of the refrigerating chamber between the first temperature threshold and the second temperature threshold at steps S200 and S300. The first temperature interval determined by the first temperature threshold and the second temperature threshold is associated with the second temperature interval determined by the refrigerating shutdown temperature and the refrigerating startup temperature of the refrigerating chamber. Specifically, the temperature of the first temperature interval is higher than that of the second temperature interval, that is, the first temperature threshold is higher than the refrigeration shutdown temperature, and the second temperature threshold is higher than the refrigeration startup temperature. Two conditions can exist, wherein all the temperatures of the first temperature interval are above all the temperatures of the second temperature interval, namely the first temperature threshold and the second temperature threshold are both greater than the refrigerating shutdown temperature and the refrigerating startup temperature; or a temperature coincidence region exists between the first temperature interval and the second temperature interval, but the upper limit of the first temperature interval, namely the second temperature threshold value, is larger than the refrigerating starting temperature, and the lower limit of the first temperature interval, namely the first temperature threshold value, is larger than the refrigerating stopping temperature and is smaller than the refrigerating starting temperature. The temperature setting of the first temperature interval is higher than that of the second temperature interval, so that the temperature of the refrigerating chamber rises to the refrigerating starting temperature, the compressor is kept in an opening state, the freezing chamber evaporator is always in a refrigerating state when the freezing chamber has a refrigerating requirement, and the temperature of the freezing chamber is always reduced to reach the temperature of the refrigerating requirement of the freezing chamber. Therefore, the situation that the temperature of the freezing chamber cannot meet the freezing and refrigerating requirements due to the fact that the compensation heating wire is not opened when the temperature of the refrigerating chamber is low in the prior art is avoided. It is worth to say that the temperature of the refrigerating chamber can be kept rising when the supplementary heating wire and the compressor are simultaneously started by reasonably selecting the device parameters of the compensating heating wire, so that the temperature of the refrigerating chamber is always above the starting temperature of the refrigerating chamber, the compressor is always in a starting state, and the temperature of the freezing chamber meets the freezing and refrigerating temperature requirement.
The control method for the refrigerator comprises the steps of obtaining the refrigerating temperature of the refrigerating chamber under the condition that the freezing chamber meets the refrigerating requirement, and controlling the compensation heater to work, so that the refrigerating temperature is kept between a first temperature threshold and a second temperature threshold, wherein the first temperature threshold is associated with the refrigerating stop temperature of the refrigerating chamber, and the second temperature threshold is associated with the refrigerating start-up temperature of the refrigerating chamber. Therefore, when the freezing chamber has refrigeration requirement, the temperature of the refrigerating chamber is above the refrigeration starting temperature, so that the compressor is in an opening state, and the temperature of the freezing chamber is reduced until the refrigeration requirement is met. Therefore, the situation that the temperature of the freezing chamber cannot reach the required freezing and refrigerating temperature when the supplementary heating wire is closed due to the fact that the freezing chamber has the refrigerating requirement and the temperature of the refrigerating chamber is low in the prior art is overcome.
In a preferred embodiment of the present invention, in order to maintain a reasonable association state between a first temperature interval determined by a first temperature threshold and a second temperature interval determined by a refrigerating shutdown temperature and a refrigerating startup temperature of the refrigerating chamber, so that the temperature of the refrigerating chamber is not too high to affect the refrigerating temperature of the refrigerating chamber when the heating wire is turned on when the refrigerating chamber has a refrigerating requirement, the first temperature threshold is set to be higher than the refrigerating shutdown temperature by a first temperature value, and/or the second temperature threshold is set to be higher than the refrigerating startup temperature by a second temperature value, preferably, the first temperature threshold is higher than the refrigerating shutdown temperature by the first temperature value and the second temperature threshold is higher than the refrigerating startup temperature by the second temperature value, wherein the first temperature value and the second temperature value range from 1 ℃ to 3 ℃. The first temperature value and the second temperature value may be the same or different. Fig. 2 is a schematic diagram showing a first temperature threshold, a second temperature threshold, a refrigeration stop temperature and a refrigeration start-up temperature in a preferred embodiment of the present invention. The first temperature threshold is compensation heating wire starting temperature T _ Heat _ on, the second temperature threshold is compensation heating wire stopping temperature T _ Heat _ off, the refrigeration stopping temperature is compressor stopping temperature T _ Comp _ off, and the refrigeration starting temperature is compressor stopping temperature T _ Comp _ on. The first temperature value and the second temperature value are the same and are both M deg.c in fig. 2. For example, M.degree.C.may be chosen to be 2 degree.C.
Taking the starting temperature T _ Heat _ on of the compensation heating wire as 7 ℃, the stopping temperature T _ Heat _ off of the compensation heating wire as 11 ℃, the stopping temperature T _ Comp _ off of the compressor as 5 ℃, and the starting temperature T _ Comp _ on of the compressor as 9 ℃ as an example, the following describes the process of the compressor operation and the compensation heating wire operation to meet the refrigerating temperature requirement of the freezing chamber.
When the refrigerating temperature of the freezing chamber is required, the controller of the refrigerator acquires the current temperature of the refrigerating chamber, if the temperature of the refrigerating chamber is relatively low, such as 4 ℃, the temperature is below the starting temperature T _ Heat _ on, namely 7 ℃ of the compensation heating wire according to the control rule, so as to control the compensation heating wire to be opened, the temperature of the refrigerating chamber is accordingly increased, when the temperature is increased to be higher than the starting temperature T _ Comp _ on, namely 9 ℃, of the compressor, the controller controls the compressor to be opened, when the compensation heating wire and the compressor are simultaneously opened, the temperature of the refrigerating chamber can still be slowly increased, further, the temperature of the refrigerating chamber is continuously increased to be higher than the stopping temperature T _ Heat _ off, namely 11 ℃, at the moment, the compensation heating wire is controlled to be closed, the temperature of the refrigerating chamber can be decreased due to the fact that the compressor is still opened, when the temperature is decreased to be lower than the starting temperature T _ Heat _ on, namely 7 ℃, the compensation heating wire is opened again, the temperature of the refrigerating chamber is continuously increased, and the temperature of the refrigerating chamber is controlled to be stopped until the temperature is increased to be higher than 11 ℃ again. Therefore, the temperature of the refrigerating chamber is maintained between the starting temperature T _ Heat _ on, namely 7 ℃, of the compensating heating wires and the stopping temperature T _ Heat _ off, namely 11 ℃, of the compensating heating wires, and the compressor is kept on all the time in the subsequent process, so that the temperature of the freezing chamber is reduced all the time until the refrigerating temperature of the freezing chamber is reached. When the temperature of the freezing chamber reaches the freezing chamber refrigerating temperature, the refrigerating requirement of the freezing chamber is canceled, and the on-off of the compressor is controlled only according to the conventional control rule of the refrigerating chamber, namely the compressor is controlled to be turned on when the temperature of the refrigerating chamber is higher than the starting temperature T _ Comp _ on of the compressor, and the compressor is controlled to be turned off when the temperature of the refrigerating chamber is lower than the stopping temperature T _ Comp _ off of the compressor, so that the temperature of the refrigerating chamber is maintained between the stopping temperature T _ Comp _ off of the compressor and the starting temperature T _ Comp _ on of the compressor. And only when the temperature of the freezing chamber rises next time and the freezing chamber is determined to have the refrigeration requirement, the compensation heating wire and the compressor are installed with the control rule again to control the opening and the closing, so that the compensation heating wire is kept in an open state during the opening of the compressor to meet the refrigeration requirement of the freezing chamber.
It can be seen from the above control rules that when the freezing chamber has a refrigeration demand, the temperature of the refrigerating chamber is a small temperature higher than the temperature interval determined by the compressor stop temperature T _ Comp _ off and the compressor stop temperature T _ Comp _ on, such as M ° c, and since the value range of M ° c is 1 ℃ -3 ℃ which is a reasonable small range temperature value, the temperature of the refrigerating chamber does not rise too high, and the temperature can be maintained to substantially meet the refrigeration demand state, so that the above control rules meet the refrigeration temperature demand of the freezing chamber while slightly raising the temperature of the refrigerating chamber, thereby taking into account the refrigeration temperature demands of the two chambers.
In a preferred embodiment of the present invention, the control method further includes:
step S400, determining that the refrigerating chamber has no refrigerating requirement;
step S500, keeping the compensating heater off.
In this embodiment, when the temperature of the freezing chamber is lowered to thereby satisfy the refrigerating temperature demand, and it is thus confirmed that there is no refrigerating demand, the supplementary heater, i.e., the compensating heating wire, is controlled to be turned off and maintained in a turned-off state, so that the compressor is controlled to be turned on and off according to the normal temperature control rule of the refrigerating chamber, thereby achieving that the temperature of the refrigerating chamber satisfies the refrigerating temperature demand thereof, and energy is saved due to the turning-off of the compensating heating wire.
In a preferred embodiment of the present invention, the first temperature value and the second temperature value are related to an ambient temperature of the refrigerator. In this embodiment, the specific values of the first temperature value and the second temperature value may be determined according to the ambient temperature of the refrigerator, for example, the first temperature value and the second temperature value may be set to be slightly higher when the temperature is high, and the first temperature value and the second temperature value may be set to be slightly lower when the temperature is low, because the first temperature value and the second temperature value determine that the temperature of the refrigerating chamber is higher than a range value of the refrigerating temperature when the refrigerating chamber requires refrigeration, the size of the range value affects the distribution of the time for opening and closing the compensation heating wire in the working process, if the range value is larger, the working time of the compensation heating wire is larger, and otherwise, the working time is smaller. The working time of the compensation heating wire is related to the ambient temperature by relating the ambient temperature with the range value, so that the power of the compensation heating wire is flexibly adjusted according to the ambient temperature, the energy loss caused by heating of the compensation heating wire is saved, and the power consumption of the refrigerator is finally saved.
The embodiment of the invention also provides a control device for the refrigerator. The refrigerator is a single-system refrigeration refrigerator such as an air-cooled direct-cooling refrigerator, namely, a freezing chamber is in an air-cooled type and a refrigerating chamber is in a direct-cooling type. The refrigerator is also internally provided with a refrigerating system which is mainly formed by connecting an evaporator, a condenser, a refrigerant pipeline and a compressor, and each compartment is internally provided with a temperature sensor such as a refrigerating temperature sensor of a refrigerating chamber and a freezing temperature sensor of a freezing chamber and an environment temperature sensor for detecting the environment temperature of the refrigerator. The whole refrigeration system of the refrigerator controls the compressor to be started and stopped according to the temperature detected by the refrigeration temperature sensor, namely, the compressor is started when the refrigeration requirement exists in the refrigerating chamber, and the compressor is controlled when the refrigeration requirement does not exist in the refrigerating chamber. In order to prevent the temperature of the freezing chamber from being too high to meet the refrigerating requirement of the freezing chamber, a compensation heater such as a compensation heating wire is arranged in the refrigerating chamber to heat the refrigerating chamber, so that the temperature of the refrigerating chamber is increased to meet the starting requirement of the compressor, and the freezing chamber is also refrigerated.
Fig. 3 schematically shows a block diagram of a control apparatus for a refrigerator according to an embodiment of the present invention. Referring to fig. 1, the control apparatus includes:
a refrigerating temperature sensor 20 installed at the refrigerating compartment to detect a temperature of the refrigerating compartment;
a processor 10 (such as the MCU shown in fig. 3) configured to: determining that the freezing chamber meets the refrigeration requirement; acquiring a refrigerating temperature of the refrigerating compartment from a refrigerating temperature sensor 20; and controlling the compensation heater 50 to maintain the refrigeration temperature between a first temperature threshold associated with the refrigeration shutdown temperature of the refrigeration compartment and a second temperature threshold associated with the refrigeration startup temperature of the refrigeration compartment.
Examples of processor 10 may include, but are not limited to, a general purpose processor, a special purpose processor, a conventional processor, a Digital Signal Processor (DSP), a plurality of microprocessors, one or more microprocessors in association with a DSP core, a controller, a microcontroller, application Specific Integrated Circuits (ASICs), field Programmable Gate Arrays (FPGAs) circuits, any other type of Integrated Circuit (IC), a state machine, and the like.
The refrigeration requirement of the freezing chamber in this embodiment is determined by the set temperature of the freezing chamber, the ambient temperature and the freezing chamber temperature detected by the cold storage temperature sensor 30, and the temperature of the refrigeration requirement and the temperature of the non-refrigeration requirement are determined by the set temperature of the freezing chamber and the ambient temperature, and then compared with the freezing chamber temperature to determine whether the refrigeration requirement is currently required. If the current set temperature of the freezing chamber is-15 ℃ and the ambient temperature is 5 ℃, the temperature of the determined refrigeration requirement is-17 ℃ and the temperature of the refrigeration-free requirement is-14 ℃, then according to the comparison between the temperature of the freezing chamber and the ambient temperature, the refrigeration requirement is determined to be met if the temperature is higher than the refrigeration requirement, and the refrigeration requirement is determined to be not met if the temperature is lower than the refrigeration-free requirement.
After it is determined that there is a refrigerating demand for the freezing chamber, the refrigerating chamber temperature may be detected by the refrigerating temperature sensor 20, and the compensation heating wire may be controlled to operate according to the refrigerating chamber temperature to maintain the temperature of the refrigerating chamber between the first temperature threshold and the second temperature threshold. The first temperature interval determined by the first temperature threshold and the second temperature threshold is associated with the second temperature interval determined by the refrigerating shutdown temperature and the refrigerating startup temperature of the refrigerating chamber. Specifically, the temperature of the first temperature interval is higher than that of the second temperature interval, that is, the first temperature threshold is higher than the refrigeration stop temperature, and the second temperature threshold is higher than the refrigeration start-up temperature. Two conditions can exist, wherein all the temperatures of the first temperature interval are above all the temperatures of the second temperature interval, namely the first temperature threshold and the second temperature threshold are both greater than the refrigerating shutdown temperature and the refrigerating startup temperature; or the first temperature interval and the second temperature interval have a temperature superposition area, but the upper limit of the first temperature interval, namely the second temperature threshold value, is greater than the refrigeration starting temperature, and the lower limit of the first temperature interval, namely the first temperature threshold value, is greater than the refrigeration stopping temperature and is less than the refrigeration starting temperature. The temperature setting of the first temperature interval is higher than that of the second temperature interval, so that the temperature of the refrigerating chamber rises to the refrigerating starting temperature, the compressor is kept in the starting state, the refrigerating chamber evaporator is always in the refrigerating state when the refrigerating chamber has a refrigerating requirement, and the temperature of the refrigerating chamber is always reduced to reach the temperature of the refrigerating requirement of the refrigerating chamber. Therefore, the situation that the temperature of the freezing chamber cannot meet the freezing and refrigerating requirements due to the fact that the compensation heating wire is not opened when the temperature of the refrigerating chamber is low in the prior art is avoided. It is worth to say that the temperature of the refrigerating chamber can be kept rising when the supplementary heating wire and the compressor are simultaneously started by reasonably selecting the device parameters of the compensating heating wire, so that the temperature of the refrigerating chamber is always above the starting temperature of the refrigerating chamber, the compressor is always in a starting state, and the temperature of the freezing chamber meets the freezing and refrigerating temperature requirement.
In the control device for the refrigerator according to the embodiment of the present invention, the processor 10 obtains the refrigerating temperature of the refrigerating chamber through the refrigerating temperature sensor 20 and controls the operation of the compensation heater 50 in a case where it is determined that the freezing chamber satisfies the refrigerating requirement, so that the refrigerating temperature is maintained between a first temperature threshold value and a second temperature threshold value, wherein the first temperature threshold value is associated with the refrigerating shutdown temperature of the refrigerating chamber, and the second temperature threshold value is associated with the refrigerating startup temperature of the refrigerating chamber. Therefore, when the freezing chamber has a refrigerating requirement, the temperature of the refrigerating chamber is higher than the refrigerating starting temperature of the freezing chamber, so that the compressor is in an opening state, and the temperature of the freezing chamber is reduced until the refrigerating requirement of the freezing chamber is met. Therefore, the situation that the temperature of the freezing chamber cannot reach the required freezing and refrigerating temperature when the supplementary heating wire is closed due to the fact that the freezing chamber has the refrigerating requirement and the temperature of the refrigerating chamber is low in the prior art is overcome.
In a preferred embodiment of the present invention, in order to maintain a reasonable relationship between a first temperature interval determined by a first temperature threshold and a second temperature interval determined by a refrigerating shutdown temperature and a refrigerating startup temperature of the refrigerating chamber, so that when the refrigerating chamber has a refrigerating requirement, the temperature of the refrigerating chamber is not too high to affect the refrigerating temperature of the refrigerating chamber when the heating wire is turned on, the first temperature threshold is set to be higher than the refrigerating shutdown temperature by a first temperature value, and/or the second temperature threshold is set to be higher than the refrigerating startup temperature by a second temperature value, preferably, the first temperature threshold is higher than the refrigerating shutdown temperature by the first temperature value and the second temperature threshold is higher than the refrigerating startup temperature by the second temperature value, wherein the first temperature value and the second temperature value range from 1 ℃ to 3 ℃. The first temperature value and the second temperature value may be the same or different. Fig. 2 is a schematic diagram showing a first temperature threshold, a second temperature threshold, a refrigeration stop temperature and a refrigeration start-up temperature in a preferred embodiment of the present invention. The first temperature threshold value is the compensation heating wire starting temperature T _ Heat _ on, the second temperature threshold value is the compensation heating wire stopping temperature T _ Heat _ off, the refrigerating stopping temperature is the compressor stopping temperature T _ Comp _ off, and the refrigerating starting temperature is the compressor stopping temperature T _ Comp _ on. The first temperature value and the second temperature value are the same and are both M deg.c in fig. 2. For example, M.degree.C.may be selected to be 2 degree.C.
Taking the starting temperature T _ Heat _ on of the compensation heating wires as 7 ℃, the stopping temperature T _ Heat _ off of the compensation heating wires as 11 ℃, the stopping temperature T _ Comp _ off of the compressor as 5 ℃ and the starting temperature T _ Comp _ on of the compressor as 9 ℃ as an example, the following description will explain the operation of the compressor and the operation of the compensation heating wires to meet the refrigerating temperature requirement of the freezing chamber.
When the freezing chamber has a refrigerating temperature demand, a controller of the refrigerator acquires the current temperature of the refrigerating chamber, if the temperature of the refrigerating chamber is relatively low, such as 4 ℃, the temperature is below the starting temperature T _ Heat _ on, namely 7 ℃ of the compensation heating wire according to the control rule, so that the compensation heating wire is controlled to be opened, the temperature of the refrigerating chamber is accordingly increased, when the temperature is increased to be higher than the starting temperature T _ Comp _ on, namely 9 ℃, the controller controls the compressor to be opened, when the compensation heating wire and the compressor are simultaneously opened, the temperature of the refrigerating chamber can still slowly increase, the temperature of the refrigerating chamber is further continuously increased to be higher than the stopping temperature T _ Heat _ off, namely 11 ℃, the compensation heating wire is controlled to be closed, the temperature of the refrigerating chamber can decrease due to the fact that the compressor is still opened, when the temperature is decreased to be lower than the starting temperature T _ Heat _ on, namely 7 ℃, the compensation heating wire is opened again, the temperature of the refrigerating chamber is continuously increased until the temperature is increased to be higher than 11 ℃, and the compensation heating wire is controlled to be stopped. Therefore, the temperature of the refrigerating chamber is maintained between the starting temperature T _ Heat _ on (namely 7 ℃) of the compensation heating wire and the stopping temperature T _ Heat _ off (namely 11 ℃), and the compressor is kept on all the time in the subsequent process, so that the temperature of the freezing chamber is reduced all the time until the refrigerating temperature of the freezing chamber is reached. When the temperature of the freezing chamber reaches the freezing chamber refrigerating temperature, the refrigerating requirement of the freezing chamber is canceled, and the on-off of the compressor is controlled only according to the conventional control rule of the refrigerating chamber, namely the compressor is controlled to be turned on when the temperature of the refrigerating chamber is higher than the starting temperature T _ Comp _ on of the compressor, and the compressor is controlled to be turned off when the temperature of the refrigerating chamber is lower than the stopping temperature T _ Comp _ off of the compressor, so that the temperature of the refrigerating chamber is maintained between the stopping temperature T _ Comp _ off of the compressor and the starting temperature T _ Comp _ on of the compressor. And only when the next freezing chamber temperature rise enables the freezing chamber to be determined to have the refrigeration requirement, the compensation heating wire and the compressor are installed with the control rule again to be controlled to be opened and closed, so that the compensation heating wire is kept in an opening state during the opening period of the compressor, and the refrigeration requirement of the freezing chamber is met.
It can be seen from the above control rules that when the freezing chamber has a refrigeration demand, the temperature of the refrigerating chamber is a small temperature higher than the temperature interval determined by the compressor stop temperature T _ Comp _ off and the compressor stop temperature T _ Comp _ on, such as M ° c, and since the value range of M ° c is 1 ℃ -3 ℃ which is a reasonable small range temperature value, the temperature of the refrigerating chamber does not rise too high, and the temperature can be maintained to substantially meet the refrigeration demand state, so that the above control rules meet the refrigeration temperature demand of the freezing chamber while slightly raising the temperature of the refrigerating chamber, thereby taking into account the refrigeration temperature demands of the two chambers.
In a preferred embodiment of the invention, the processor 10 is further configured to: it is determined that there is no refrigeration demand on the freezer compartment and the make-up heater 50 is kept off.
In this embodiment, when the temperature of the freezing chamber is lowered to thereby satisfy the refrigerating temperature demand, and it is thus confirmed that there is no refrigerating demand, the supplementary heater, i.e., the compensating heating wire, is controlled to be turned off and maintained in a turned-off state, so that the compressor is controlled to be turned on and off according to the normal temperature control rule of the refrigerating chamber, thereby achieving that the temperature of the refrigerating chamber satisfies the refrigerating temperature demand thereof, and energy is saved due to the turning-off of the compensating heating wire.
In a preferred embodiment of the present invention, the first temperature value and the second temperature value are related to an ambient temperature of the refrigerator. In this embodiment, the specific values of the first temperature value and the second temperature value may be determined according to the ambient temperature of the refrigerator, where the ambient temperature may be detected by the processor 10 from the ambient temperature sensor 40, if the temperature is high, the first temperature value and the second temperature value may be set to be slightly higher, and if the temperature is low, the first temperature value and the second temperature value may be set to be slightly lower, because the first temperature value and the second temperature value determine that the temperature of the refrigerating chamber is higher than a range value of the refrigerating temperature when the refrigerating chamber has a refrigerating requirement, and the size of the range value affects the distribution of the time for opening and closing the compensation heater wire in the working process, if the range value is larger, the working time of the compensation heater wire is larger, otherwise, the working time is smaller. The working time of the compensation heating wire is related to the ambient temperature by relating the ambient temperature with the range value, so that the power of the compensation heating wire is flexibly adjusted according to the ambient temperature, the energy loss caused by heating of the compensation heating wire is saved, and the power consumption of the refrigerator is finally saved.
The embodiment of the invention also provides a refrigerator which comprises the control device for the refrigerator. The control device overcomes the problem that the temperature of the freezing chamber cannot reach the required freezing and refrigerating temperature when the supplementary heating wire is closed due to the fact that the freezing chamber has the refrigerating requirement and the temperature of the refrigerating chamber is low in the prior art.
Embodiments of the present invention also provide a machine-readable storage medium having computer-readable instructions stored thereon, which are used for enabling the processor 10 to execute the control method for the refrigerator described above when the processor 10 described above executes the computer-readable instructions.
Those skilled in the art can understand that all or part of the steps in the method for implementing the above embodiments may be implemented by a program instructing related hardware, where the program is stored in a storage medium and includes several instructions to enable a (which may be a single chip, a chip, etc.) or a processor (processor) to execute all or part of the steps in the method for implementing each embodiment of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
In addition, any combination of various different embodiments of the present invention may be made, and the same should be considered as what is disclosed in the embodiments of the present invention as long as it does not depart from the spirit of the embodiments of the present invention.
Claims (8)
1. A control method for a refrigerator, the refrigerator comprising a refrigerating chamber, a freezing chamber and a refrigerating system, the refrigerating system comprising a refrigerating evaporator and a freezing evaporator, the refrigerating evaporator and the freezing evaporator being connected in series, the refrigerator being provided with a compensating heater for heating and compensating the refrigerating chamber, the refrigerating system being driven by a compressor, the control method comprising:
determining that the freezer compartment meets a refrigeration demand;
acquiring the refrigerating temperature of the refrigerating chamber; and
controlling the compensation heater to maintain the refrigeration temperature between a first temperature threshold and a second temperature threshold, wherein the first temperature threshold is a first temperature value higher than the refrigeration shutdown temperature; the second temperature threshold is higher than the refrigeration starting temperature by a second temperature value; the first temperature value and the second temperature value are determined according to the ambient temperature of the refrigerator, the higher the ambient temperature is, the higher the first temperature value and the second temperature value are set, and the lower the ambient temperature is, the lower the first temperature value and the second temperature value are set.
2. The control method according to claim 1, characterized in that the first temperature value and the second temperature value range from 1 ℃ to 3 ℃.
3. The control method according to claim 1, characterized by further comprising:
determining that there is no refrigeration demand for the freezer compartment;
keeping the compensating heater off.
4. The utility model provides a controlling means for refrigerator, its characterized in that, wherein the refrigerator includes walk-in, freezer and refrigerating system, refrigerating system includes cold-stored evaporimeter and freezing evaporimeter, cold-stored evaporimeter with freezing evaporimeter is established ties, the refrigerator is provided with and carries out the compensation heater that adds the thermal compensation to the walk-in, refrigerating system is by compressor drive, controlling means includes:
a refrigerating temperature sensor installed at the refrigerating chamber to detect a temperature of the refrigerating chamber;
a processor configured to:
determining that the freezer compartment meets a refrigeration demand;
acquiring the refrigerating temperature of the refrigerating chamber from the refrigerating temperature sensor;
controlling the compensating heater to maintain the refrigeration temperature between a first temperature threshold and a second temperature threshold, wherein the first temperature threshold is a first temperature value above the refrigeration shutdown temperature; the second temperature threshold is higher than the refrigeration starting temperature by a second temperature value; the first temperature value and the second temperature value are determined according to the environment temperature of the refrigerator, the first temperature value and the second temperature value are set to be higher when the environment temperature is higher, and the first temperature value and the second temperature value are set to be lower when the environment temperature is lower.
5. The control device of claim 4, wherein the first and second temperature values range from 1 ℃ to 3 ℃.
6. The control device of claim 4, further configured to:
determining that there is no refrigeration demand for the freezer compartment;
keeping the compensating heater off.
7. A refrigerator, characterized in that it comprises a control device for a refrigerator according to any one of claims 4 to 6.
8. A machine-readable storage medium characterized in that the machine-readable storage medium has stored thereon computer-readable instructions for enabling a processor to execute the control method for a refrigerator according to any one of claims 1 to 3 when the computer-readable instructions are executed by the processor.
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| CN111780476B (en) * | 2020-06-16 | 2021-12-21 | 海信（成都）冰箱有限公司 | A kind of refrigerator |
| CN114562847A (en) * | 2020-11-27 | 2022-05-31 | 海信容声(广东)冰箱有限公司 | Refrigerator with a door |
| CN113959174A (en) * | 2021-10-28 | 2022-01-21 | Tcl家用电器（合肥）有限公司 | Refrigerator temperature control system, refrigerator and refrigerator temperature control method |
| CN114264111A (en) * | 2021-12-24 | 2022-04-01 | 长虹美菱股份有限公司 | Anti-icing control method for refrigerating chamber of air-cooled refrigerator at low ring temperature |
| CN114427774B (en) * | 2022-01-24 | 2024-04-05 | 海信冰箱有限公司 | Refrigerator and temperature control method for warm drawer of refrigerator |
| CN115342572A (en) * | 2022-07-11 | 2022-11-15 | 安徽康佳同创电器有限公司 | Anti-freezing control processing method and device for refrigerating chamber of refrigerator, refrigerator and medium |
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| EP0995957A2 (en) * | 1998-10-22 | 2000-04-26 | Electrolux Zanussi S.p.A. | Refrigeration apparatus with temperature balancing device |
| EP1460361A1 (en) * | 2003-03-21 | 2004-09-22 | Signal Lux MDS S.r.l. | Control device for refrigerating apparatus |
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