CN113915868A

CN113915868A - Refrigerator and control method thereof

Info

Publication number: CN113915868A
Application number: CN202110227963.5A
Authority: CN
Inventors: 宿建光; 孙彬; 刘洋; 周超
Original assignee: Hisense Shandong Refrigerator Co Ltd
Current assignee: Hisense Shandong Refrigerator Co Ltd
Priority date: 2021-03-02
Filing date: 2021-03-02
Publication date: 2022-01-11
Anticipated expiration: 2041-03-02
Also published as: CN113915868B

Abstract

The invention discloses a refrigerator, comprising: the refrigerator comprises a refrigerator body, a refrigerating chamber and a refrigerating chamber, wherein the refrigerating chamber and the refrigerating chamber are distributed on two sides of the refrigerator body; the temperature sensor is arranged on the outer surface of the box body and used for collecting the ambient temperature; the controller is configured to: responding to a refrigerator power-on instruction, and acquiring the ambient temperature acquired by the temperature sensor; acquiring a control mode corresponding to the ambient temperature; wherein the control modes comprise a high temperature control mode, a medium temperature control mode and a low temperature control mode; controlling the rotating speed of the compressor and the rotating speed of the fan according to the control mode; and executing corresponding blowing defrosting operation according to the control mode. The invention also discloses a refrigerator control method. By adopting the embodiment of the invention, the problem of condensation on the side wall of the refrigerating chamber can be solved on the premise of taking normal refrigeration and normal defrosting of the refrigerator into consideration.

Description

Refrigerator and control method thereof

Technical Field

The invention relates to the field of refrigerators, in particular to a refrigerator and a control method thereof.

Background

Along with the improvement of the living standard of consumers, the demand on a large-volume refrigerator is increased, the large-volume split-door air-cooled refrigerator with relatively high cost performance enters more and more multi-user families, along with the market competition of the products is increased, the requirements of the users on the products are increased, and in addition to the requirements on normal refrigeration and fresh keeping of the refrigerator, higher requirements are provided for the performance reliability of the refrigerator. The existing multi (double) system side-by-side refrigerator products in the market have the freezing chamber and the refrigerating chamber which are distributed on two sides of the refrigerator and separated by a middle beam. The freezer temperature is lower when the refrigerator normally refrigerates, the heat preservation foaming layer thickness of centre sill is relatively thin between freezer and the walk-in, the freezer sees through centre sill heat preservation layer and can lead to cold-stored side to keep away (be close to the freezer in the side of the roof beam) surface temperature lower to the walk-in, cold-stored refrigeration time is relatively short, it is frequent that cold-stored blowing changes the frost, it is great to change the indoor relative humidity of frost time length to lead to the cold-stored, just can lead to the wall to appear the condensation when the lateral wall surface temperature of walk-in is less than condensation point temperature, influence the normal use of refrigerator.

Disclosure of Invention

The embodiment of the invention aims to provide a refrigerator and a control method thereof, which solve the problem of condensation on the side wall of a refrigerating chamber on the premise of taking normal refrigeration and normal defrosting of the refrigerator into consideration.

To achieve the above object, an embodiment of the present invention provides a refrigerator, including:

the refrigerator comprises a refrigerator body, a refrigerating chamber and a refrigerating chamber, wherein the refrigerating chamber and the refrigerating chamber are distributed on two sides of the refrigerator body;

the temperature sensor is arranged on the outer surface of the box body and used for collecting the ambient temperature;

the controller is configured to:

responding to a refrigerator power-on instruction, and acquiring the ambient temperature acquired by the temperature sensor;

acquiring a control mode corresponding to the ambient temperature; wherein the control modes comprise a high temperature control mode, a medium temperature control mode and a low temperature control mode;

controlling the rotating speed of the compressor and the rotating speed of the fan according to the control mode;

and executing corresponding blowing defrosting operation according to the control mode.

As an improvement of the above scheme, the rotation speed of the compressor comprises a first high rotation speed, a first middle rotation speed and a first low rotation speed, and the rotation speed of the fan comprises a second high rotation speed, a second middle rotation speed and a second low rotation speed; wherein the content of the first and second substances,

when the control mode is a high-temperature control mode, the compressor is at a first high rotating speed and the fan is at a second high rotating speed;

when the control mode is a medium-temperature control mode, the compressor is at a first low rotating speed and the fan is at a second low rotating speed;

and when the control mode is a low-temperature control mode, the compressor is at a first middle rotating speed and the fan is at a second middle rotating speed.

As an improvement of the above solution, the performing of the corresponding blowing defrosting operation according to the control mode includes:

stopping refrigerating and performing blowing defrosting operation in response to refrigerating stopping refrigerating operation;

when the defrosting stopping condition is met, the blowing defrosting operation is quitted;

acquiring the accumulated time from the first execution of the blowing defrosting operation in the current control mode;

when the accumulated time reaches an accumulated time threshold value, acquiring the ambient temperature collected by the temperature sensor again;

judging whether the environment temperature corresponds to the current control mode;

if yes, performing blowing defrosting operation according to the current control mode; if not, switching other control modes and executing corresponding blowing defrosting operation.

As a modification of the above scheme, the defrosting stop condition is as follows: the refrigerating defrosting sensor reaches the preset defrosting stop temperature or the blowing defrosting time reaches the preset defrosting stop time

As a modification of the above, when the control mode is the high temperature control mode or the medium temperature control mode, the response condition of the refrigerating stop cooling operation is: the accumulated refrigerating time reaches the preset refrigerating stop refrigerating time; and the refrigeration stop refrigeration time in the high-temperature control mode is longer than that in the medium-temperature control mode.

As a modification of the above, when the control mode is the low temperature control mode, the response condition of the refrigeration stop cooling operation is:

recording the refrigeration temperature acquired by the refrigeration sensor once every preset time period, and continuously recording for N times, wherein N is an integer greater than or equal to 3;

the refrigerating temperature recorded at the previous time is more than or equal to the refrigerating temperature recorded at the previous time;

the temperature difference between the refrigerating temperature and the starting temperature is greater than or equal to a preset target temperature.

In order to achieve the above object, an embodiment of the present invention further provides a refrigerator control method, including:

responding to a power-on instruction of the refrigerator, and acquiring the ambient temperature acquired by a temperature sensor in the refrigerator; wherein, a freezing chamber and a refrigerating chamber distributed at two sides are arranged in the refrigerator;

As a modification of the above scheme, the defrosting stop condition is as follows: the refrigeration defrosting sensor reaches a preset defrosting stop temperature or the blowing defrosting time reaches a preset defrosting stop time.

Compared with the prior art, the refrigerator and the control method thereof provided by the embodiment of the invention have the advantages that firstly, when the power-on instruction of the refrigerator is responded, the ambient temperature acquired by the temperature sensor is acquired; then acquiring a control mode corresponding to the ambient temperature; and finally, controlling the rotating speed of the compressor and the rotating speed of the fan according to the control mode, and executing corresponding blowing defrosting operation according to the control mode. Because when changing the frost operation to carrying out blowing, the influence that environmental temperature brought has been considered, compressor rotational speed, fan rotational speed and the defrosting of blowing when refrigerating refrigeration are gone into and the condition of withdrawing from through different ring warmth and are set for, realize the indoor relative humidity automatically regulated of freezer, compromise refrigerator normal refrigeration, solve under the prerequisite of changing the frost cold-stored lateral wall (being close to freezing side) condensation problem, promote user and use experience, increase user satisfaction.

Drawings

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

FIG. 2 is a schematic diagram of a refrigeration circuit of a refrigerator according to an embodiment of the present invention;

FIG. 3 is a flow chart illustrating a refrigerator environment determination according to an embodiment of the present invention;

FIG. 4 is a flow chart of the air blowing defrosting control in a high-temperature use environment according to an embodiment of the present invention;

fig. 5 is a flow chart of the air blowing defrosting control in the medium-temperature use environment according to the embodiment of the present invention;

FIG. 6 is a flow chart of the control of blowing defrosting in a low-temperature use environment according to an embodiment of the present invention;

fig. 7 is a flowchart of a refrigerator control method according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and 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.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a refrigerator according to an embodiment of the present invention, where the refrigerator includes:

a refrigerator body 10, in which a freezing chamber 101 and a refrigerating chamber 102 are arranged at both sides;

the temperature sensor 20 is arranged on the outer surface of the box body and used for collecting the ambient temperature;

the controller is configured to:

Illustratively, the temperature sensor is positioned in a display panel of the refrigerator, and the display panel is arranged on the outer surface of the refrigerator body. The refrigeration pipeline of the refrigerator can refer to fig. 2, and comprises a refrigerating refrigeration fan 20, a refrigerating defrosting sensor 30, a refrigerating fin evaporator 40 and a freezing fin evaporator 50. In the embodiment of the present invention, the fan controlling the rotation speed according to the control mode is the refrigerating and cooling fan 20; the refrigeration defrosting sensor 30 is used for collecting the temperature of the refrigeration fin evaporator 40 and controlling the subsequent blowing defrosting operation.

Specifically, the controller firstly identifies the temperature of the use environment of the refrigerator, the refrigeration and refrigeration time is longer at high ambient temperature, the rotating speeds of a compressor and a fan are increased under the condition that the dehumidification of an evaporator is stronger and the relative humidity in a refrigerating chamber is reduced more quickly during refrigeration, the refrigeration and refrigeration time is shortened as much as possible, meanwhile, the blowing and defrosting frequency is properly increased, the relative humidity in the refrigerating chamber is properly increased under the condition that the normal defrosting of the evaporator is ensured, and the air drying of food is prevented; the refrigerating and refrigerating time at the intermediate temperature is short, the rotating speed of a compressor and a fan is reduced under the condition that the relative humidity in a refrigerating chamber is reduced less when an evaporator dehumidifies less during refrigeration, the refrigerating and refrigerating time is increased as much as possible, meanwhile, the blowing defrosting frequency is properly reduced, the relative humidity in the refrigerating chamber is properly reduced under the condition that the evaporator normally defrosts, and the condensation of a refrigerating side wall (freezing middle beam side) is prevented; the refrigeration is started rarely at low ring temperature, the humidity in the refrigerating chamber is normal, the air is blown rarely to defrost under the condition, a protection program for preventing the frost blockage of the refrigeration fin evaporator is designed, and the normal refrigeration of the refrigeration is ensured.

Specifically, after the temperature of the refrigerator is electrified, the compressor and the refrigerating fans of each compartment continuously run according to a normal set rotating speed until the temperature control sensors of each compartment (a refrigerating chamber, a freezing chamber, a temperature changing chamber and the like) of the refrigerator reach a set temperature shutdown point, and then the refrigerator is judged to enter a stable state. In order to prevent the sensor measurement error, the controller needs to acquire the temperature acquired by the temperature sensor 20 for N times at preset target time intervals, where N is an integer greater than 2; when the environment temperature obtained for N times is larger than a preset high-temperature threshold value, obtaining a corresponding high-temperature control mode; when the environment temperature obtained for N times is greater than or equal to a preset low-temperature threshold and less than or equal to the high-temperature threshold, obtaining a corresponding medium-temperature control mode; and when the environment temperature obtained for N times is less than the low-temperature threshold value, obtaining a corresponding low-temperature control mode.

In the embodiment of the present invention, N is preferably 5, when the temperatures collected by the temperature sensor 20 are T1, T2, T3, T4 and T5, respectively, the target time period is 1 minute, the high temperature threshold is 25 ℃, and the low temperature threshold is 9 ℃.

Referring to fig. 3, the refrigerator using environment is classified into the following three types according to the following determination rules based on the data collected by the temperature sensor 30:

1) high-temperature use environment: if T1, T2, T3, T4 and T5 are all more than 25 ℃, the refrigerator is judged to be in a high-temperature use environment.

2) Medium temperature use environment: if T1, T2, T3, T4 and T5 which are equal to or less than 9 ℃ are all equal to or less than 25 ℃, the refrigerator is judged to be in a medium-temperature use environment;

3) low-temperature use environment: if T1, T2, T3, T4 and T5 are all less than 9 ℃, the refrigerator is judged to be in a low-temperature use environment.

Specifically, the rotating speed of the compressor comprises a first high rotating speed, a first middle rotating speed and a first low rotating speed, and the rotating speed of the fan comprises a second high rotating speed, a second middle rotating speed and a second low rotating speed; wherein the content of the first and second substances,

Specifically, the fan is a refrigerating and refrigerating fan, and the rotating speeds of the compressor and the refrigerating and refrigerating fan can refer to table 1. In the embodiment of the invention, the refrigeration time in the medium-temperature use environment is relatively short, the dehumidification effect of the refrigeration of the fin evaporator in the refrigerating chamber is weakened, and the low rotating speed of the compressor and the fan in the medium-temperature use environment is used for prolonging the refrigeration time of the refrigeration fin evaporator, enhancing the dehumidification effect of the refrigeration of the fin evaporator in the refrigerating chamber and reducing the relative humidity in the refrigerating chamber, thereby reducing the risk of condensation on the refrigerating side wall.

TABLE 1 rotational speeds of compressor and refrigerating fan

Compressor speed (rpm)	Refrigeration fan rotary (rpm)
		First high rotation speed: 3900	The second high rotation speed: 1500
First intermediate rotation speed: 3000	Second intermediate rotation speed: 1290
		First low rotation speed: 1290	The second low rotation speed: 1050

Specifically, the executing the corresponding blowing defrosting operation according to the control mode comprises the following steps:

Specifically, the defrosting stopping condition is as follows: the refrigeration defrosting sensor reaches a preset defrosting stop temperature or the blowing defrosting time reaches a preset defrosting stop time. When the control mode is a high temperature control mode or a medium temperature control mode, the response condition of the refrigeration stop cooling operation is as follows: the accumulated refrigerating time reaches the preset refrigerating stop refrigerating time; and the refrigeration stop refrigeration time in the high-temperature control mode is longer than that in the medium-temperature control mode.

Specifically, when the control mode is the low temperature control mode, the response condition of the refrigeration stop cooling operation is:

In the embodiment of the invention, the rotating speed of the compressor, the rotating speed of the fan and the conditions of entering and exiting of blowing defrosting during refrigeration are set at different ambient temperatures, so that the automatic adjustment of the relative humidity in the refrigerating chamber is realized, the problem of condensation on the side wall (close to the freezing side) of the refrigeration chamber is solved on the premise of normal refrigeration and normal defrosting of the refrigerator, the use experience of a user is improved, and the satisfaction of the user is increased. In addition, the humidity in the refrigerating chamber of the refrigerator is automatically adjusted according to the temperature of the use environment, the controllable humidity in the refrigerating chamber is realized, the condensation temperature of the refrigerating side wall is avoided on the premise of ensuring normal defrosting, and all-weather reliable operation of the refrigerator in various environments is met.

Referring to fig. 4, when the controller determines that the refrigerator usage environment is a "high temperature usage environment", and the refrigerating chamber meets the start-up refrigeration condition, the refrigerating chamber refrigeration and blowing defrosting control in this mode are sequentially performed according to the following 4 steps:

s101, starting refrigeration in a refrigeration mode, enabling a compressor to rotate at a high speed and a refrigeration fan to rotate at a high speed, and recording refrigeration accumulated refrigeration time by a system;

s102, refrigerating accumulated refrigeration for 90min (refrigerating stop refrigeration time), and blowing for defrosting after refrigerating stop refrigeration;

s103, when the refrigerating defrosting sensor reaches 5 ℃ (defrosting stop temperature) or the blowing defrosting is carried out for 100min (defrosting stop time), the blowing defrosting is stopped;

s104, judging whether the accumulated time of the first time of entering the air blowing defrosting for the refrigeration reaches 24h (accumulated time threshold value), judging whether T1, T2, T3, T4 and T5 collected by the temperature sensor meet the condition of the high-temperature use environment again, if so, controlling the refrigeration and air blowing defrosting of the refrigeration chamber to work according to the high-temperature use environment mode, and if not, exiting the mode and judging the use environment mode again according to a refrigerator use environment judgment program.

Referring to fig. 5, when the controller determines that the refrigerator usage environment is the "medium temperature usage environment", and the refrigerating chamber meets the start-up refrigeration condition, the refrigerating chamber refrigeration and blowing defrosting control in this mode are sequentially performed according to the following 4 steps:

s201, starting refrigeration in a refrigeration mode, and recording the accumulated refrigeration time of the refrigeration by a system at a low rotating speed of a compressor and a low rotating speed of a refrigeration fan;

s202, refrigerating accumulated refrigeration for 120min (refrigerating stop refrigeration time), and blowing for defrosting after refrigerating stop refrigeration;

s203, when the refrigerating defrosting sensor reaches 3 ℃ (defrosting stop temperature) or blowing defrosting is carried out for 75min (defrosting stop time), the blowing defrosting is stopped;

s204, judging whether the accumulated time of the first time of entering the air blowing defrosting reaches 24h (accumulated time threshold value) after the refrigeration, namely, judging whether T1, T2, T3, T4 and T5 collected by the ambient temperature sensor meet the condition of the 'medium-temperature use environment' again, if so, controlling the refrigeration and air blowing defrosting of the refrigeration chamber to work according to the 'medium-temperature use environment' mode, and if not, exiting the mode and judging the use environment mode again according to a refrigerator use environment judgment program.

Referring to fig. 6, when the controller determines that the refrigerator usage environment is a "low temperature usage environment" and the refrigerating compartment meets the start-up refrigeration condition, the mode of refrigerating compartment refrigeration and blowing defrosting control is sequentially performed according to the following 4 steps:

s301, starting refrigeration in cold storage, and rotating speed in a compressor and a cold storage fan;

s302, recording the temperature of the refrigeration sensor once every 5 minutes (within a preset time period), continuously recording for 10(N) times, wherein the temperature recorded each time is larger than the temperature recorded last time, the 10 th recorded temperature is larger than the 1 st recorded temperature, and the temperature of the refrigeration sensor is larger than or equal to the starting point plus 3 ℃ (target temperature), and entering refrigeration blowing defrosting (preventing the refrigeration fin evaporator from frost blocking programs);

s303, when the refrigerating defrosting sensor reaches 3 ℃ (defrosting stop temperature) or blowing defrosting is carried out for 75min (defrosting stop time), the blowing defrosting is stopped;

s304, judging whether the accumulated time of the first time of entering the air blowing defrosting reaches 24h (accumulated time threshold value) again, judging whether T1, T2, T3, T4 and T5 collected by the ambient temperature sensor meet the condition of the low-temperature use environment again, if so, controlling the refrigeration and air blowing defrosting of the refrigerating chamber to work according to the low-temperature use environment mode, and if not, exiting the mode and judging the use environment mode again according to a refrigerator use environment judgment program.

Compared with the prior art, the refrigerator provided by the embodiment of the invention has the advantages that firstly, when the refrigerator is in response to a power-on instruction, the environment temperature acquired by the temperature sensor is acquired; then acquiring a control mode corresponding to the ambient temperature; and finally, controlling the rotating speed of the compressor and the rotating speed of the fan according to the control mode, and executing corresponding blowing defrosting operation according to the control mode. Because when changing the frost operation to carrying out blowing, the influence that environmental temperature brought has been considered, compressor rotational speed, fan rotational speed and the defrosting of blowing when refrigerating refrigeration are gone into and the condition of withdrawing from through different ring warmth and are set for, realize the indoor relative humidity automatically regulated of freezer, compromise refrigerator normal refrigeration, solve under the prerequisite of changing the frost cold-stored lateral wall (being close to freezing side) condensation problem, promote user and use experience, increase user satisfaction.

Referring to fig. 7, fig. 7 is a flowchart of a refrigerator control method according to an embodiment of the present invention, where the refrigerator control method includes:

s1, responding to a power-on instruction of the refrigerator, and acquiring the ambient temperature acquired by a temperature sensor in the refrigerator; wherein, a freezing chamber and a refrigerating chamber distributed at two sides are arranged in the refrigerator;

s2, acquiring a control mode corresponding to the environment temperature; wherein the control modes comprise a high temperature control mode, a medium temperature control mode and a low temperature control mode;

s3, controlling the rotating speed of the compressor and the rotating speed of the fan according to the control mode;

and S4, executing corresponding blowing defrosting operation according to the control mode.

It should be noted that the refrigerator control method according to the embodiment of the present invention is implemented by a controller in the refrigerator. The refrigerator provided by the embodiment of the invention is internally provided with the freezing chamber and the refrigerating chamber which are distributed on two sides, the controller firstly identifies the temperature of the using environment of the refrigerator, the refrigerating and refrigerating time is longer under high ambient temperature, the rotating speed of a compressor and a fan is increased under the condition that the dehumidification of an evaporator is stronger and the relative humidity in the refrigerating chamber is reduced more quickly during refrigeration, the refrigerating and refrigerating time is shortened as much as possible, meanwhile, the blowing and defrosting frequency is properly increased, the relative humidity in the refrigerating chamber is properly increased under the condition that the evaporator is normally defrosted, and the air drying of food is prevented; the refrigerating and refrigerating time at the intermediate temperature is short, the rotating speed of a compressor and a fan is reduced under the condition that the relative humidity in a refrigerating chamber is reduced less when an evaporator dehumidifies less during refrigeration, the refrigerating and refrigerating time is increased as much as possible, meanwhile, the blowing defrosting frequency is properly reduced, the relative humidity in the refrigerating chamber is properly reduced under the condition that the evaporator normally defrosts, and the condensation of a refrigerating side wall (freezing middle beam side) is prevented; the refrigeration is started rarely at low ring temperature, the humidity in the refrigerating chamber is normal, the air is blown rarely to defrost under the condition, a protection program for preventing the frost blockage of the refrigeration fin evaporator is designed, and the normal refrigeration of the refrigeration is ensured.

Specifically, in steps S1 to S2, after the temperature of the refrigerator is powered on, the compressor and the cooling fans of the compartments continuously operate at the normal set rotation speed until the temperature control sensors of the compartments (the refrigerating compartment, the freezing compartment, the temperature changing compartment, and the like) of the refrigerator reach the set temperature stop point, and then it is determined that the refrigerator enters the stable state. In order to prevent the sensor measurement error, the controller needs to acquire the temperature acquired by the temperature sensor 20 for N times at preset target time intervals, where N is an integer greater than 2; when the environment temperature obtained for N times is larger than a preset high-temperature threshold value, obtaining a corresponding high-temperature control mode; when the environment temperature obtained for N times is greater than or equal to a preset low-temperature threshold and less than or equal to the high-temperature threshold, obtaining a corresponding medium-temperature control mode; and when the environment temperature obtained for N times is less than the low-temperature threshold value, obtaining a corresponding low-temperature control mode.

Specifically, in step S3, the rotation speed of the compressor includes a first high rotation speed, a first middle rotation speed and a first low rotation speed, and the rotation speed of the fan includes a second high rotation speed, a second middle rotation speed and a second low rotation speed; wherein the content of the first and second substances,

Specifically, in step S4, the performing a corresponding air-blowing defrosting operation according to the control mode includes:

s41, responding to the refrigeration stop refrigeration operation, stopping the refrigeration and executing the blowing defrosting operation;

s42, when the defrosting stop condition is met, the blowing defrosting operation is quit;

s43, acquiring the accumulated time from the first execution of the blowing defrosting operation in the current control mode;

s44, when the accumulated time reaches an accumulated time threshold, acquiring the environment temperature collected by the temperature sensor again;

s45, judging whether the environment temperature corresponds to the current control mode;

s46, if yes, performing blowing defrosting operation according to the current control mode; if not, switching other control modes and executing corresponding blowing defrosting operation.

It should be noted that, for a specific workflow in the refrigerator control method, reference may be made to the working process of the refrigerator described in the above embodiment, and details are not repeated here.

Compared with the prior art, the refrigerator control method provided by the embodiment of the invention has the advantages that firstly, when the power-on instruction of the refrigerator is responded, the ambient temperature acquired by the temperature sensor is acquired; then acquiring a control mode corresponding to the ambient temperature; and finally, controlling the rotating speed of the compressor and the rotating speed of the fan according to the control mode, and executing corresponding blowing defrosting operation according to the control mode. Because when changing the frost operation to carrying out blowing, the influence that environmental temperature brought has been considered, compressor rotational speed, fan rotational speed and the defrosting of blowing when refrigerating refrigeration are gone into and the condition of withdrawing from through different ring warmth and are set for, realize the indoor relative humidity automatically regulated of freezer, compromise refrigerator normal refrigeration, solve under the prerequisite of changing the frost cold-stored lateral wall (being close to freezing side) condensation problem, promote user and use experience, increase user satisfaction.

While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.

Claims

1. A refrigerator, characterized by comprising:

the controller is configured to:

2. The refrigerator as claimed in claim 1, wherein the rotation speed of the compressor includes a first high rotation speed, a first middle rotation speed and a first low rotation speed, and the rotation speed of the blower fan includes a second high rotation speed, a second middle rotation speed and a second low rotation speed; wherein the content of the first and second substances,

3. The refrigerator as claimed in claim 1, wherein the performing of the corresponding blowing defrosting operation according to the control mode comprises:

4. The refrigerator of claim 3, wherein the defrosting stop condition is: the refrigeration defrosting sensor reaches a preset defrosting stop temperature or the blowing defrosting time reaches a preset defrosting stop time.

5. The refrigerator as claimed in claim 3, wherein when the control mode is a high temperature control mode or a medium temperature control mode, the response condition of the refrigerating stop cooling operation is: the accumulated refrigerating time reaches the preset refrigerating stop refrigerating time; and the refrigeration stop refrigeration time in the high-temperature control mode is longer than that in the medium-temperature control mode.

6. The refrigerator as claimed in claim 3, wherein when the control mode is a low temperature control mode, the response condition of the refrigerating stop cooling operation is:

7. A refrigerator control method, comprising:

8. The control method of the refrigerator according to claim 7, wherein the rotation speed of the compressor includes a first high rotation speed, a first middle rotation speed and a first low rotation speed, and the rotation speed of the blower fan includes a second high rotation speed, a second middle rotation speed and a second low rotation speed; wherein the content of the first and second substances,

9. The refrigerator control method of claim 7, wherein the performing of the corresponding blowing defrosting operation according to the control mode includes:

10. The refrigerator control method of claim 9, wherein the defrosting stop condition is: the refrigeration defrosting sensor reaches a preset defrosting stop temperature or the blowing defrosting time reaches a preset defrosting stop time.