CN113945062B - Return air defrosting control method and device and air-cooled refrigerator - Google Patents
Return air defrosting control method and device and air-cooled refrigerator Download PDFInfo
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- CN113945062B CN113945062B CN202111198157.6A CN202111198157A CN113945062B CN 113945062 B CN113945062 B CN 113945062B CN 202111198157 A CN202111198157 A CN 202111198157A CN 113945062 B CN113945062 B CN 113945062B
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- 238000010257 thawing Methods 0.000 title claims abstract description 147
- 238000000034 method Methods 0.000 title claims abstract description 55
- 238000012544 monitoring process Methods 0.000 claims abstract description 12
- 238000007710 freezing Methods 0.000 claims description 16
- 230000008014 freezing Effects 0.000 claims description 16
- 238000012545 processing Methods 0.000 claims description 9
- 238000004590 computer program Methods 0.000 claims description 2
- 238000001816 cooling Methods 0.000 description 8
- 238000005057 refrigeration Methods 0.000 description 5
- 230000004044 response Effects 0.000 description 4
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
- F25D21/002—Defroster control
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
- F25D21/002—Defroster control
- F25D21/008—Defroster control by timer
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
- F25D21/06—Removing frost
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
- F25D21/06—Removing frost
- F25D21/12—Removing frost by hot-fluid circulating system separate from the refrigerant system
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Abstract
The invention discloses a return air defrosting control method and device and an air-cooled refrigerator. Wherein, the method comprises the following steps: after the precooling stage in the defrosting process of the refrigerator is finished, monitoring the actual temperature of the refrigerating chamber; determining whether to execute a return air defrosting stage according to the actual temperature of the refrigerating chamber; and under the condition that the return air defrosting stage is determined to be executed, determining the operation time length of the return air defrosting stage according to the actual temperature of the refrigerating chamber. The running time of the air return defrosting stage is determined according to the temperature of the refrigerating chamber, so that the heat of the refrigerating chamber can be effectively utilized to pre-defrost the evaporator, the cold energy of the evaporator is effectively utilized to cool the refrigerating chamber, and the temperature of the refrigerating chamber is prevented from being too low.
Description
Technical Field
The invention relates to the technical field of refrigerators, in particular to a return air defrosting control method and device and an air-cooled refrigerator.
Background
The operation mode of the air-cooled refrigerator can be divided into a refrigeration process and a defrosting process, wherein the defrosting process mainly comprises five stages of precooling, return air defrosting, working of a defrosting heater, dripping and forced cooling. The effect of the air return defrosting stage is that before the defrosting heater works, the air door and the fan of the refrigerating chamber are opened, so that the evaporator with lower temperature and the refrigerating chamber with higher temperature exchange heat forcibly, the temperature of the refrigerating chamber is fully utilized, the surface of a frost layer on the evaporator is melted, the frost layer is soft, and the working time of the defrosting heater can be effectively reduced.
However, in the prior art, part of the air-cooled refrigerator has no return air defrosting stage, or the time of the return air defrosting stage is fixedly set. If the defrosting process does not have an air return defrosting stage, the working time of the defrosting heater is increased, and the energy consumption is increased; if the time for returning the air to defrost is fixedly set, the temperature of the refrigerating chamber is too low due to the too long time for returning the air to defrost, and the residual cold of the evaporator is not fully utilized due to the too short time for returning the air to defrost.
Aiming at the problem that the air return defrosting time of the refrigerator in the prior art cannot be adaptively adjusted, an effective solution is not provided at present.
Disclosure of Invention
The embodiment of the invention provides a return air defrosting control method and device and an air-cooled refrigerator, and aims to solve the problem that the return air defrosting time of the refrigerator in the prior art cannot be adaptively adjusted.
In order to solve the technical problem, the invention provides a return air defrosting control method, wherein the method comprises the following steps: after the precooling stage in the defrosting process of the refrigerator is finished, monitoring the actual temperature of the refrigerating chamber; determining whether to execute a return air defrosting stage according to the actual temperature of the refrigerating chamber; and under the condition that the return air defrosting stage is determined to be executed, determining the operation time length of the return air defrosting stage according to the actual temperature of the refrigerating chamber.
Further, determining whether to execute a return defrosting stage according to the actual temperature of the refrigerating compartment comprises the following steps: comparing the temperature of the refrigerating chamber with a preset shutdown temperature; if the temperature of the refrigerating room is less than or equal to the preset shutdown temperature, the air return defrosting stage is not executed, and the working stage of a defrosting heater in the defrosting process is directly executed; and if the temperature of the refrigerating compartment is greater than the preset shutdown temperature, determining to execute the return defrosting stage.
Further, the operation duration of the return defrosting stage is determined according to the actual temperature of the refrigerating chamber, and the method comprises the following steps: judging a temperature interval in which the actual temperature of the refrigerating chamber is; wherein, a plurality of temperature intervals are set according to the preset shutdown temperature; and determining the operation time corresponding to the temperature interval according to the temperature interval of the actual temperature of the refrigerating compartment as the operation time of the return defrosting stage.
Further, the method further comprises: presetting a corresponding relation between a temperature interval and the operation time length; wherein the higher the temperature, the longer the run length.
Further, in case it is determined that a return defrosting phase is performed, the method further comprises: and acquiring the set temperature of the refrigerating chamber, and determining the rotating speed of the freezing fan according to the set temperature of the refrigerating chamber.
Further, the rotation speed of the freezing fan is determined according to the set temperature of the refrigerating chamber, and the method comprises the following steps: if the set temperature of the cold storage chamber is larger than a preset value, determining that the rotating speed of the freezing fan is a first rotating speed; if the set temperature of the refrigerating chamber is less than or equal to a preset value, determining that the rotating speed of the freezing fan is a second rotating speed; wherein the first rotational speed is less than the second rotational speed.
Further, in the case that it is determined that the return defrosting phase is performed, after determining the operation duration of the return defrosting phase according to the actual temperature of the refrigerating compartment, the method further includes: and in the air return defrosting stage, if the actual temperature of the refrigerating chamber is monitored to be less than or equal to the preset shutdown temperature, directly exiting the air return defrosting stage.
The invention also provides a return air defrosting control device, wherein the device comprises: the temperature monitoring module is used for monitoring the actual temperature of the refrigerating chamber after the precooling stage in the defrosting process of the refrigerator is finished; the first processing module is used for determining whether to execute a return air defrosting stage according to the actual temperature of the refrigerating chamber; and the second processing module is used for determining the running time of the return air defrosting stage according to the actual temperature of the refrigerating chamber under the condition that the first processing module determines to execute the return air defrosting stage.
The invention also provides an air-cooled refrigerator, wherein the air-cooled refrigerator comprises the return air defrosting control device.
The invention also provides a computer-readable storage medium having a computer program stored thereon, wherein the program when executed by a processor implements the method as described above.
By applying the technical scheme of the invention, the operation time of the air return defrosting stage is determined according to the temperature of the refrigerating chamber, so that the heat of the refrigerating chamber can be effectively utilized to pre-defrost the evaporator, the cold energy of the evaporator is effectively utilized to cool the refrigerating chamber, and the too low temperature of the refrigerating chamber is avoided.
Drawings
FIG. 1 is a flow chart of a return air defrosting control method according to an embodiment of the invention;
fig. 2 is a flowchart of a defrosting process of an air-cooled refrigerator according to an embodiment of the present invention;
fig. 3 is a block diagram of a return air defrosting control device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. 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.
The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the examples of the present invention and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise, and "a plurality" typically includes at least two.
It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
The words "if", as used herein, may be interpreted as "at \8230; \8230when" or "when 8230; \823030, when" or "in response to a determination" or "in response to a detection", depending on the context. Similarly, the phrases "if determined" or "if detected (a stated condition or event)" may be interpreted as "when determined" or "in response to a determination" or "when detected (a stated condition or event)" or "in response to a detection (a stated condition or event)", depending on the context.
It is also noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that an article or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such article or apparatus. Without further limitation, an element defined by the phrase "comprising one of 8230, and" comprising 8230does not exclude the presence of additional like elements in articles or devices comprising the element.
Alternative embodiments of the present invention are described in detail below with reference to the accompanying drawings.
Example 1
The defrosting process of the air-cooled refrigerator mainly comprises five stages of precooling, return air defrosting, working of a defrosting heater, dripping and forced cooling. In the air return defrosting stage, an air door and a freezing fan of the refrigerating chamber are opened, so that the evaporator with lower temperature and the refrigerating chamber with higher temperature exchange heat forcibly. It should be noted that the operation time of the air return defrosting stage is more critical, and if the operation time is appropriate, the temperature of the refrigerating chamber can be fully utilized to melt the surface of the frost layer on the evaporator, so that the frost layer is soft; and the cold energy of the evaporator is fully utilized to cool the refrigerating chamber, and meanwhile, the temperature of the refrigerating chamber can not be too low. If the running time of the return defrosting stage is too long, the temperature of the refrigerating chamber is too low, and if the running time of the return defrosting stage is too short, the residual cold of the evaporator is not fully utilized. Based on the method, the invention provides a return air control scheme which is used for determining the reasonable operation time of the return air defrosting stage.
Fig. 1 is a flow chart of a return air defrosting control method according to an embodiment of the present invention, as shown in fig. 1, the method includes the following steps:
step S101, after a precooling stage in a defrosting process of a refrigerator is finished, monitoring the actual temperature of a cold storage chamber; specifically, temperature monitoring may be performed by a temperature sensor provided in the refrigerating compartment;
step S102, determining whether to execute a return air defrosting stage according to the actual temperature of the refrigerating chamber; if yes, executing step S103, otherwise executing step S104;
step S103, under the condition that the air return defrosting stage is determined to be executed, the operation duration of the air return defrosting stage is determined according to the actual temperature of the refrigerating chamber;
and step S104, directly entering the working stage of the defrosting heater under the condition that the air return defrosting stage is not executed.
According to the method and the device, whether the return air defrosting stage needs to be executed or not after the precooling stage can be determined according to the actual temperature of the refrigerating chamber, and the running time of the return air defrosting stage is adjusted according to the actual temperature of the refrigerating chamber under the condition of need. Therefore, the evaporator can be pre-defrosted by effectively utilizing the heat of the refrigerating chamber, the refrigerating capacity of the evaporator is effectively utilized to cool the refrigerating chamber, and the temperature of the refrigerating chamber is prevented from being too low.
When determining whether to execute a return air defrosting stage according to the actual temperature of the refrigerating chamber, judging according to the actual temperature of the refrigerating chamber and a preset shutdown temperature, and specifically comparing the temperature of the refrigerating chamber with the preset shutdown temperature; if the temperature of the refrigerating chamber is less than or equal to the preset shutdown temperature, the temperature of the refrigerating chamber meets the temperature requirement of the chamber, the air return defrosting stage is not executed, and the working stage of a defrosting heater in the defrosting process is directly executed; and if the temperature of the refrigerating compartment is greater than the preset shutdown temperature, determining to execute a return defrosting stage. On the basis, the preset shutdown temperature is used as a judgment basis to judge whether the air return defrosting stage is necessary to be executed or not, and if the temperature of the refrigerating chamber meets the temperature requirement of the chamber, the air return defrosting stage is not required to be executed, so that the time of the whole defrosting process is saved.
If the air return defrosting stage is necessary to be executed, determining the operation time of the air return defrosting stage according to the actual temperature of the refrigerating chamber, and specifically, judging the temperature interval of the actual temperature of the refrigerating chamber; wherein, a plurality of temperature intervals are set according to the preset shutdown temperature; and determining the operation time corresponding to the temperature interval according to the temperature interval of the actual temperature of the refrigerating compartment as the operation time of the return air defrosting stage. It should be noted that a corresponding relationship between a temperature interval and an operation duration is preset; wherein the higher the temperature, the longer the run length. When a plurality of temperature ranges are set according to the preset shutdown temperature, the preset shutdown temperature needs to be used as the left end point of the first temperature range.
For example: the first temperature interval is set to (T) c-off ，T c-off +T c1 ]With a corresponding operating time period t f1 (ii) a The second temperature interval is set to (T) c-off +T c1 ，T c-off +T c2 ]With a corresponding operating time period t f2 (ii) a The third temperature interval is set to (T) c-off +T c2 ，T c-off +T c3 ]With a corresponding operating time period t f3 (ii) a The fourth temperature interval is set to (T) c-off +T c3 , + ∞) for an operating time period t f4 . Wherein, T c-off Is a preset shutdown temperature, T c1 Is the first compensation value, T c2 Is the second compensation value, T c3 Is the third compensation value. T is c1 ＜T c2 ＜T c3 ，t f1 ＜t f2 ＜t f3 ＜t f4 . Of course, the number of temperature intervals is not limited to this, and the above is only an example, and the specific values of the above setting values can be determined according to actual requirements.
After entering the air return defrosting stage, the air door and the freezing fan of the refrigerating chamber can be opened, and the rotating speed of the freezing fan can influence the heat exchange efficiency between the evaporator and the refrigerating chamber. The embodiment provides an implementation mode, in the case that the return air defrosting stage is determined to be executed, the set temperature of the refrigerating chamber is obtained, and the rotating speed of the freezing fan is determined according to the set temperature of the refrigerating chamber. Specifically, if the set temperature of the refrigerating compartment is greater than a preset value, the rotating speed of the freezing fan is determined to be a first rotating speed; if the set temperature of the cold storage chamber is less than or equal to the preset value, determining the rotating speed of the freezing fan as a second rotating speed; wherein the first rotating speed is less than the second rotating speed.
The preset value is the middle value of the set temperature range of the refrigerating chamber, and if the set temperature range of the refrigerating chamber is 2-8 ℃, namely, when the user selects the set temperature of the refrigerating chamber, the user can select the temperature range from 2-8 ℃, the preset value is the middle value of the temperature range, namely 5 ℃.
And in the air return defrosting stage, the actual temperature of the refrigerating chamber can be continuously monitored in real time, and if the actual temperature of the refrigerating chamber is monitored to be less than or equal to the preset shutdown temperature, the refrigerating chamber meets the temperature requirement at the moment, the air return defrosting stage is directly exited, and the working stage of a defrosting heater is entered.
Example 2
This embodiment provides a changeable control scheme of return air defrosting time, and this scheme is applicable to and carries out the return air defrosting to the forced air cooling refrigerator, can effectively utilize the heat of cold-stored room to defrost the evaporimeter in advance, can guarantee that the temperature of cold-stored room can not hang down excessively simultaneously. Fig. 2 is a flowchart of a defrosting process of an air-cooled refrigerator according to an embodiment of the present invention, as shown in fig. 2, the flowchart including the steps of:
in step S201, the air-cooled refrigerator performs a conventional cooling process.
Step S202, judging whether the defrosting process can be started or not. Specifically, it may be determined whether the air-cooled refrigerator satisfies the defrosting condition, for example, when the cumulative operating time of the compressor reaches a preset time (e.g., 12 h), it is determined that the defrosting condition is satisfied. Of course, other defrosting conditions may be adopted for judgment, and the judgment is not limited herein. If yes, step S203 is executed, otherwise, the step S201 is executed again.
Step S203, enter a pre-cooling stage. The compressor can be forced to run for 1 hour at the highest rotating speed in the stage, and the refrigerating chamber can refrigerate as required.
Step S204, after the precooling stage is finished, monitoring the actual temperature T of the refrigerating chamber c 。
If T is c ≤T c-off Then, the return air defrosting stage is not executed, and the step S207 is directly executed.
If T is c-off ＜T c ≤T c-off +T c1 Determining the operation time length of the return air defrosting stage as t f1 ；
If T is c-off +T c1 ＜T c ≤T c-off +T c2 Then, the operation time of the return air defrosting stage is determined as t f2 ；
If T is c-off +T c2 ＜T c ≤T c-off +T c3 Then, the operation time of the return air defrosting stage is determined as t f3 ；
If T is c ＞T c-off +T c3 Determining the operation time length of the return air defrosting stage as t f4 。
For example, the following steps are carried out: when T is c And when the temperature is less than or equal to 1.5 ℃, determining that the temperature of the refrigerating chamber meets the chamber requirement, and skipping the stage of air return and defrosting. When the temperature is less than 1.5 ℃ T c When the temperature is less than or equal to 2.5 ℃, the air return defrosting stage is executed for 5min. When the temperature is less than 2.5 ℃ and less than T c When the temperature is less than or equal to 3.5 ℃, the air return defrosting stage is executed, and the time is 8min. When the temperature is less than 3.5 ℃ and less than T c When the temperature is less than or equal to 4.5 ℃, the air return defrosting stage is executed for 10min. When T is c And when the temperature is higher than 4.5 ℃, performing an air return defrosting stage for 15min.
After the return air defrosting phase is finished, step S207 is executed. It should be noted that, in the air return defrosting stage, the actual temperature Tc of the refrigerating chamber can be continuously monitored in real time, and if Tc is less than or equal to Tc-off, the air return defrosting stage is immediately exited. For example, during the return air defrosting phase, if T is detected c And if the temperature is less than or equal to 1.5 ℃, directly exiting the return air defrosting stage without continuously executing the return air defrosting stage according to the running time.
Step S205, determining the set temperature T of the refrigerating chamber c-s Whether it is greater than a predetermined value T c-s1 . In the stage of air return and defrosting, the temperature can be set according to the set temperature T of the refrigerating chamber c-s And a preset value T c-s1 (the middle value of the set temperature range of the refrigerating compartment) determines the rotating speed of the refrigerating fan.
Step S206, if Tc-S is more than Tc-S1, controlling the rotating speed of the refrigerating fan to be V 1 If Tc-s is less than or equal to Tc-s1, the rotating speed of the refrigerating fan is controlled to be V 2 。V 1 ＜V 2 ，V 1 Can be set to 1250rpm and V 2 May be set at 1550rpm.
It should be noted that the execution sequence of step S204 and step S205 is not limited to this, and both steps may be executed simultaneously or sequentially.
And step S207, entering the working stage of the defrosting heater.
Step S208, the dripping stage is carried out.
Step S209, the strong cooling stage is entered. And entering a conventional refrigeration process after the forced cooling stage is finished.
Note that, T is c Is the actual temperature of the refrigeration compartment, i.e. the temperature data detected by the temperature sensor of the refrigeration compartment. T is c-off Is a preset shutdown temperature, T c1 Is a first compensation value, T c2 Is the second compensation value, T c3 Is the third compensation value. T is c1 ＜T c2 ＜T c3 ，t f1 ＜t f2 ＜t f3 ＜t f4 . The specific numerical values of the above setting values can be determined according to actual requirements.
In this embodiment, after the air return defrosting stage is finished, the working stage of the defrosting heater, the dripping stage and the forced cooling stage are executed, and finally, a conventional refrigeration procedure is performed. tf1, tf2, tf3 and tf4 are the optimal return air defrosting time in different temperature intervals. Based on this, can utilize the temperature of cold-stored room to carry out the defrosting in advance to the evaporimeter completely, can not lead to the temperature of cold-stored room too low simultaneously yet, and specific operating duration accessible experiment is obtained, and the air-cooled refrigerator of each model, the operating duration that its different temperature interval corresponds has the difference.
Example 3
Corresponding to the method for controlling return air defrosting introduced in fig. 1, the present embodiment provides a return air defrosting control device, as shown in the block diagram of the structure of the return air defrosting control device in fig. 3, the device includes:
the temperature monitoring module 10 is used for monitoring the actual temperature of the cold storage chamber after the precooling stage in the defrosting process of the refrigerator is finished;
the first processing module 20 is used for determining whether to execute a return air defrosting stage according to the actual temperature of the refrigerating chamber;
and the second processing module 30 is configured to determine an operation duration of the return air defrosting stage according to the actual temperature of the refrigerating compartment under the condition that the first processing module determines to execute the return air defrosting stage.
The operation of the air return defrosting stage is adjusted according to the temperature of the refrigerating chamber for a long time, so that the evaporator can be defrosted in advance by effectively utilizing the heat of the refrigerating chamber, the refrigerating chamber is cooled by effectively utilizing the cold energy of the evaporator, and the temperature of the refrigerating chamber is prevented from being too low.
The embodiment also provides an air-cooled refrigerator which comprises the return air defrosting control device introduced above.
The operation logic of the return air defrosting control device of the present embodiment has been described in detail above, and is not described again here.
Example 4
The embodiment of the present invention provides software for implementing the technical solutions described in the above embodiments and preferred embodiments.
Embodiments of the present invention provide a non-volatile computer storage medium, where a computer-executable instruction is stored in the computer storage medium, and the computer-executable instruction may execute the return air defrosting control method in any of the above method embodiments.
The storage medium stores the software, and the storage medium includes but is not limited to: optical disks, floppy disks, hard disks, erasable memory, etc.
The product can execute the method provided by the embodiment of the invention, and has corresponding functional modules and beneficial effects of the execution method. For technical details that are not described in detail in this embodiment, reference may be made to the method provided by the embodiment of the present invention.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. Based on the understanding, the above technical solutions substantially or otherwise contributing to the prior art may be embodied in the form of a software product, which may be stored in a computer-readable storage medium, such as ROM/RAM, magnetic disk, optical disk, etc., and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method according to the various embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (8)
1. A return air defrosting control method is characterized by comprising the following steps:
monitoring the actual temperature of a refrigerating chamber after the precooling stage in the defrosting process of the refrigerator is finished;
determining whether to execute a return air defrosting stage according to a comparison result of the actual temperature of the refrigerating chamber and a preset shutdown temperature;
under the condition that the return air defrosting stage is determined to be executed, determining the operation time of the return air defrosting stage according to the actual temperature of the refrigerating chamber; wherein the higher the actual temperature, the longer the run length;
under the condition that the return air defrosting stage is determined to be executed, the set temperature of the refrigerating chamber is obtained, and the rotating speed of the freezing fan is determined according to the set temperature of the refrigerating chamber; which comprises the following steps: if the set temperature of the cold storage chamber is larger than a preset value, determining that the rotating speed of the freezing fan is a first rotating speed; if the set temperature of the cold storage chamber is less than or equal to a preset value, determining the rotating speed of the freezing fan to be a second rotating speed; wherein the first rotational speed is less than the second rotational speed.
2. The method of claim 1, wherein determining whether to perform a return air defrost phase based on an actual temperature of the refrigerated compartment comprises:
comparing the temperature of the refrigerating chamber with a preset shutdown temperature;
if the temperature of the refrigerating room is less than or equal to the preset shutdown temperature, the air return defrosting stage is not executed, and the working stage of a defrosting heater in the defrosting process is directly executed;
and if the temperature of the refrigerating compartment is greater than the preset shutdown temperature, determining to execute the return defrosting stage.
3. The method of claim 1, wherein determining the operational duration of the return defrosting phase based on the actual temperature of the refrigerated compartment comprises:
judging the temperature interval of the actual temperature of the refrigerating chamber; wherein, a plurality of temperature intervals are set according to the preset shutdown temperature;
and determining the operation time corresponding to the temperature interval according to the temperature interval of the actual temperature of the refrigerating compartment as the operation time of the return defrosting stage.
4. The method of claim 3, further comprising:
the corresponding relation between the temperature interval and the operation time length is preset.
5. A method according to any one of claims 1 to 4, wherein, in the event that it is determined that a return defrosting phase is to be carried out, after determining the length of time of operation of the return defrosting phase as a function of the actual temperature of the refrigerated compartment, the method further comprises:
and in the air return defrosting stage, if the actual temperature of the refrigerating chamber is monitored to be less than or equal to the preset shutdown temperature, directly exiting the air return defrosting stage.
6. A return air defrosting control device, characterized in that the device comprises:
the temperature monitoring module is used for monitoring the actual temperature of the cold storage chamber after the precooling stage in the defrosting process of the refrigerator is finished;
the first processing module is used for determining whether to execute a return air defrosting stage according to a comparison result of the actual temperature of the refrigerating chamber and a preset shutdown temperature;
the second processing module is used for determining the running time of the air return defrosting stage according to the actual temperature of the refrigerating chamber under the condition that the first processing module determines to execute the air return defrosting stage; wherein the higher the actual temperature, the longer the run length; the refrigerating system is also used for acquiring the set temperature of the refrigerating chamber under the condition of determining to execute the return air defrosting stage, and determining the rotating speed of the freezing fan according to the set temperature of the refrigerating chamber; which comprises the following steps: if the set temperature of the cold storage chamber is larger than a preset value, determining that the rotating speed of the freezing fan is a first rotating speed; if the set temperature of the cold storage chamber is less than or equal to a preset value, determining the rotating speed of the freezing fan to be a second rotating speed; wherein the first rotational speed is less than the second rotational speed.
7. An air-cooled refrigerator characterized in that the air-cooled refrigerator comprises the return air defrosting control device of claim 6.
8. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the method according to any one of claims 1 to 5.
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| CN115406161A (en) * | 2022-08-31 | 2022-11-29 | 珠海格力电器股份有限公司 | Evaporator defrosting judgment method, control device and refrigerator |
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| KR20010026176A (en) * | 1999-09-03 | 2001-04-06 | 구자홍 | The method for controlling defrost heater of a refrigerator |
| CN102679685B (en) * | 2012-05-08 | 2014-07-30 | 河南新飞电器有限公司 | Air-cooled refrigerator and energy-saving defrosting control method thereof |
| CN107062793B (en) * | 2017-03-27 | 2019-11-01 | 合肥华凌股份有限公司 | Refrigerate nature return air defrosting control method and control system |
| KR20180120975A (en) * | 2017-04-28 | 2018-11-07 | 엘지전자 주식회사 | Refrigerator and Controlling method for the same |
| CN107763957B (en) * | 2017-09-14 | 2020-03-17 | 青岛海尔股份有限公司 | Defrosting control method and device and refrigeration equipment applying same |
| CN110440495B (en) * | 2019-08-28 | 2021-10-01 | 长虹美菱股份有限公司 | Refrigerator defrosting control method and device |
| CN112460905B (en) * | 2020-11-19 | 2022-02-25 | 珠海格力电器股份有限公司 | Refrigerator return air defrosting control method and device and air-cooled refrigerator |
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