WO2018121577A1

WO2018121577A1 - Control method for refrigerator having blower shield, and refrigerator

Info

Publication number: WO2018121577A1
Application number: PCT/CN2017/118884
Authority: WO
Inventors: 刘明勇; 郑桥; 王密国; 惠斌; 唐海东
Original assignee: 青岛海尔股份有限公司
Priority date: 2016-12-27
Filing date: 2017-12-27
Publication date: 2018-07-05
Also published as: CN106642974B; CN106642974A

Abstract

A refrigerator having a blower shield and a control method therefor. A cooling system of the refrigerator comprises a blower shield for regulating air supply volume, the blower shield being provided with a closed position, an open position and several semi-open positions. The control method for the refrigerator controls the state of the blower shield by means of detecting the real-time temperature T1 and T2 of a freezing chamber and a refrigerating chamber, and distributes a reasonable air supply volume to the refrigerating chamber and the freezing chamber.

Description

Control method of refrigerator with fan shielding and refrigerator

The present application claims the priority of the Chinese Patent Application No. 201611226250.2, the application name is "control method of a refrigerator with a fan shield and a refrigerator", the entire contents of which are incorporated herein by reference. In the application.

Technical field

The invention relates to the technical field of refrigerator control, in particular to a control method of a refrigerator with fan shielding and a refrigerator.

Background technique

At the present time, when the single-system air-cooled refrigerator is working, if it is detected that the temperature of the freezer compartment or the refrigerating compartment is greater than the set temperature, the control press and the fan are turned on to cool, and the refrigerator compartment is controlled to determine whether the temperature of the refrigerator compartment is greater than the set temperature to control the opening and closing of the refrigerating damper. . Continuous cooling of the freezer is not conducive to the improvement of cooling efficiency, and the energy consumption will increase accordingly. In addition, the temperature of the above freezer compartment is significantly increased when the evaporator is defrosted, which is not conducive to food storage. Refrigerators with fan shielding have been disclosed in the industry, and the fan shielding is turned off during the defrosting process to prevent hot air from entering the freezing, and the temperature of the refrigeration compartment of the refrigerator is controlled accurately; and a control method of the refrigerator with the fan shielding is also disclosed in the industry. After the defrosting is completed, the fan shielding is kept closed until the evaporator reaches the preset cooling state, and then the fan shielding device is turned on, so that the freezing chamber temperature fluctuation is smaller. However, how to further improve the performance of the refrigerator under different working conditions is still an urgent problem in the industry.

In view of this, it is necessary to provide a new control method for a refrigerator having a fan shield and a refrigerator.

Summary of the invention

An object of the present invention is to provide a control method for a refrigerator having a fan shield and a refrigerator, which can more accurately control the air supply volume of the distribution refrigerator and the freezer compartment in real time, optimize the refrigeration process of the refrigerator compartment and the freezer compartment, and improve the refrigeration of the refrigerator. The effect and reduce energy consumption.

In order to achieve the above object, the present invention provides a control method for a refrigerator having a fan cover, which includes a freezing compartment, a refrigerating compartment, and a refrigeration system and a control system for cooling the freezing compartment and the refrigerating compartment. The refrigeration system includes a press, an evaporator, a cooling air duct, and a fan disposed in the cooling air duct. The cooling air duct is further provided with a refrigerating damper and a fan shielding corresponding to the fan, and the fan shielding is used for Adjusting the air supply volume of the freezer compartment when the fan is running, the fan shielding is provided with a closing, opening and a plurality of half-opening gears, and the control method comprises:

Open the refrigerator to operate, preset the target temperatures T1' and T2' of the freezer and refrigerator compartments;

The control system determines the threshold temperatures M1, M2 of the freezing compartment and the refrigerating compartment opening refrigeration according to T1' and T2', and the threshold temperatures m1, m2 of the freezing compartment and the refrigerating compartment closing refrigeration;

Detecting the real-time temperatures T1 and T2 of the freezer compartment and the refrigerator compartment;

If T1 < M1, T2 < M2, the fan is turned off, the fan shielding and the refrigerating damper are closed;

If T1≥M1, T2≥M2, turn on the fan, compare T1 and T2 with the set temperatures T1' and T2' of the freezer compartment and the refrigerating compartment, and obtain the freezing temperature difference ΔT1 and the refrigerating temperature difference ΔT2, respectively, where ΔT1=T1 -T1', ΔT2=T2-T2';

When ΔT1 is greater than or equal to the freezing preset temperature difference ΔT1', the fan shield is opened and the refrigerating damper is opened;

When ΔT1 is smaller than the freezing preset temperature difference ΔT1', the fan shielding is controlled to open to one of the half-opening positions according to the magnitude of ΔT1, and the refrigerating damper is opened;

If T1≥M1, T2<M2, turn on the fan, the fan shield is turned on, and the refrigerating damper is closed;

If T1 < M1, T2 ≥ M2, turn on the fan, refrigerate the damper to open, and the fan shield is closed or opened to one of the half-open positions.

As a further improvement of the present invention, if T1 < M1, T2 ≥ M2, the press is turned on, T1 is compared with the threshold temperature m1 of the freezing compartment closed refrigeration, and the fan shielding is controlled to open to one half of the difference according to the difference between the two. Open gear.

As a further improvement of the present invention, if T1 < M1, T2 ≥ M2, the temperature T3 of the evaporator is detected; when T3 is greater than or equal to the first preset evaporation temperature, the press is turned on, and the threshold temperature m1 of the cooling of the T1 and the freezing compartment is closed. The comparison is performed, and the fan shielding is controlled to open to one of the half open positions according to the difference between the two; when T3 is less than the first preset evaporation temperature, the press is closed, and the fan shielding is closed.

As a further improvement of the present invention, if T1≥M1, T2≥M2, and when ΔT1 is smaller than the freezing preset temperature difference ΔT1', the control method further comprises setting a plurality of consecutive frozen temperature difference threshold intervals, and according to ΔT1 The freezing temperature difference threshold interval determines the opening of the fan shield to a predetermined half open position, wherein ΔT1 is greater than or equal to the difference between M1 and T1'.

As a further improvement of the present invention, when the fan is turned on, the cumulative opening time t of the fan is recorded, and when the fan opening time reaches the preset time, it is determined that the refrigerator is overloaded, and the control display or send the warning information.

As a further improvement of the present invention, when the fan is turned off, the control system clears the cumulative opening time t of the fan.

As a further improvement of the present invention, the control method further comprises comparing the real-time temperatures T1 and T2 of the freezing compartment and the refrigerating compartment with the threshold temperatures m1 and m2 of the closed refrigeration during the refrigeration process of the refrigerator, and when T1≤m1, T2 When ≤ m2, turn off the fan.

As a further improvement of the present invention, when T1 ≤ m1, T2> m2, the temperature T3 of the evaporator is detected;

If T3 is greater than or equal to the second preset evaporation temperature, keep the press open;

If T3 is less than the second predetermined evaporation temperature, the press is turned off.

The present invention also provides a refrigerator using the above control method, the refrigerator having a freezing compartment, a refrigerating compartment, a refrigeration system and a control system, the refrigeration system including a press, an evaporator, a cooling air duct, and a cooling air duct a fan, wherein the cooling air duct is further provided with a refrigerating damper and a fan shielding corresponding to the fan, wherein the fan shielding is used to adjust a supply air volume of the freezer when the fan is running, and the fan shielding is provided with a closing, opening and Several semi-open positions.

The utility model has the beneficial effects that the control method and the refrigerator of the invention can realize the opening or closing of the air supply path of the freezer compartment not only by the fan shielding, but also can be combined with the freezing compartment and the refrigerating compartment according to the freezing temperature difference ΔT1 and the refrigerating temperature difference ΔT2. The target temperature T1' and T2' determine the threshold temperature M1, M2 of the freezing compartment and the refrigerating compartment to be cooled, and the threshold temperatures m1 and m2 of the freezing compartment and the refrigerating compartment to close the cooling, and control the fan to open, close or open to One of the half open positions. It can more accurately control the air supply volume of the cold storage room and the freezer compartment in real time, optimize the refrigeration process of the refrigerator compartment and the freezer compartment, improve the refrigeration effect of the refrigerator and reduce the energy consumption.

DRAWINGS

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a flow chart showing the main steps of the control method of the present invention.

detailed description

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

Please refer to FIG. 1 for a preferred embodiment of the present invention. The refrigerator provided by the present invention includes a freezing compartment, a refrigerating compartment, and a refrigeration system and a control system for cooling the freezing compartment and the refrigerating compartment. The refrigeration system includes a press, an evaporator, a cooling air duct, and a fan disposed in the cooling air duct, and the cooling air duct is further provided with a refrigerating damper and a fan shielding disposed corresponding to the fan. The fan shielding is used to adjust the air supply volume of the freezer compartment when the fan is running, and the fan shielding is provided with a closing, opening and a plurality of half-opening positions.

The control method of the refrigerator with fan shielding provided by the present invention includes:

If T1 < M1, T2 ≥ M2, turn on the fan, refrigerate the damper to open, and the fan shield is closed or opened to one of the half-open positions. The press is turned on, and the control method further comprises comparing T1 with a threshold temperature m1 of the freezing compartment to be cooled, and controlling the fan shielding to open to one of the half open positions according to the difference between the two.

Of course, in order to reduce the frequency of starting the press and make full use of the remaining cooling capacity of the evaporator, the control method further includes detecting the temperature T3 of the evaporator while turning on the fan when T1 < M1, T2 ≥ M2; When T3 is greater than or equal to the first preset evaporating temperature, the press is turned on, and T1 is compared with the threshold temperature m1 of the freezing compartment to be closed, and the fan shielding is controlled to open to one of the half-opening positions according to the difference between the two; When T3 is less than the first preset evaporation temperature, the press is turned off and the fan shield is closed. That is, the cooling amount remaining in the evaporator is sent to the refrigerating chamber by the fan to perform cooling.

If T1≥M1, T2≥M2, and when ΔT1 is less than the freezing preset temperature difference ΔT1', the control method further comprises setting a plurality of consecutive frozen temperature difference threshold intervals, and determining the threshold according to the freezing temperature difference threshold interval of ΔT1 The fan shield is opened to a predetermined half open position, wherein ΔT1 is greater than or equal to the difference between M1 and T1'.

During the cooling process of the refrigerator, when the fan is turned on, the cumulative opening time t of the fan is recorded. When the fan opening time reaches the preset time, the refrigerator is judged to be overloaded, and the display is displayed or sent a warning message, so that the user can find the door body in time. The situation is not closed, abnormal defrosting, etc., for subsequent processing. When the fan is turned off, the control system clears the cumulative turn-on time t of the fan.

The control method further comprises comparing the real-time temperatures T1 and T2 of the freezing compartment and the refrigerating compartment with the threshold temperatures m1 and m2 of the closed refrigeration during the refrigeration process of the refrigerator, and determining the freezer compartment when T1≤m1, T2≤m2 The refrigerating room does not need to continue cooling, the fan is turned off, the fan shielding and the refrigerating damper are closed accordingly, and the cooling is completed;

When T1≤m1, T2>m2, the fan shielding is turned off, the refrigerating damper is kept open, and the temperature T3 of the evaporator is detected;

If T3 is less than the second predetermined evaporation temperature, the press is turned off, and the refrigerating chamber is continuously cooled by the evaporator's own cooling capacity.

In summary, according to the control method and the refrigerator of the present invention, not only the opening or closing of the air supply path of the freezer compartment is realized by the fan shielding, but also the freezing temperature difference ΔT1 and the refrigerating temperature difference ΔT2 can be combined with the freezing compartment and the refrigerating compartment. The target temperatures T1' and T2' determine the threshold temperatures M1 and M2 of the freezing compartment and the refrigerating compartment to be cooled, and the threshold temperatures m1 and m2 of the freezing compartment and the refrigerating compartment to close the cooling, and control the fan to open, close or open to one of them. Half open position. It can more accurately control the air supply volume of the cold storage room and the freezer compartment in real time, optimize the refrigeration process of the refrigerator compartment and the freezer compartment, improve the refrigeration effect of the refrigerator and reduce the energy consumption.

It should be understood that, although the description is described in terms of embodiments, the embodiments are not intended to be construed as a single. The technical solutions in the embodiments may also be combined as appropriate to form other embodiments that can be understood by those skilled in the art.

The series of detailed descriptions set forth above are merely illustrative of the possible embodiments of the present invention, and are not intended to limit the scope of the present invention. Changes are intended to be included within the scope of the invention.

Claims

A control method for a refrigerator having a fan shielding, the refrigerator comprising a freezing compartment, a refrigerating compartment, a refrigeration system and a control system for cooling the freezing compartment and the refrigerating compartment, the refrigeration system including a press, an evaporator, a cooling air duct and a fan disposed in the cooling air duct, wherein the cooling air duct is further provided with a refrigerating damper and a fan shielding corresponding to the fan, wherein the fan shielding is used to adjust the air supply volume of the freezer compartment when the fan is operated, The utility model is characterized in that: the fan shielding is provided with a closing, opening and a plurality of half-opening positions, and the control method comprises:

Open the refrigerator to operate, preset the target temperatures T1' and T2' of the freezer and refrigerator compartments;

The control system determines the threshold temperatures M1, M2 of the freezing compartment and the refrigerating compartment opening refrigeration according to T1' and T2', and the threshold temperatures m1, m2 of the freezing compartment and the refrigerating compartment closing refrigeration;

Detecting the real-time temperatures T1 and T2 of the freezer compartment and the refrigerator compartment;

If T1 < M1, T2 < M2, the fan is turned off, the fan shielding and the refrigerating damper are closed;

If T1≥M1, T2≥M2, turn on the fan, compare T1 and T2 with the set temperatures T1' and T2' of the freezer compartment and the refrigerating compartment, and obtain the freezing temperature difference ΔT1 and the refrigerating temperature difference ΔT2, respectively, where ΔT1=T1 -T1', ΔT2=T2-T2';

When ΔT1 is greater than or equal to the freezing preset temperature difference ΔT1', the fan shield is opened and the refrigerating damper is opened;

When ΔT1 is smaller than the freezing preset temperature difference ΔT1', the fan shielding is controlled to open to one of the half-opening positions according to the magnitude of ΔT1, and the refrigerating damper is opened;

If T1≥M1, T2<M2, turn on the fan, the fan shield is turned on, and the refrigerating damper is closed;

If T1 < M1, T2 ≥ M2, turn on the fan, refrigerate the damper to open, and the fan shield is closed or opened to one of the half-open positions.
The control method according to claim 1, wherein if T1 < M1, T2 ≥ M2, the press is turned on, and T1 is compared with a threshold temperature m1 of the freezing compartment closed refrigeration, and is controlled according to the difference between the two. The fan shield is opened to one of the half open positions.
The control method according to claim 1, wherein if T1 < M1, T2 ≥ M2, detecting the temperature T3 of the evaporator; when T3 is greater than or equal to the first preset evaporation temperature, the press is turned on, and T1 is frozen. The threshold temperature m1 of the chamber shutdown refrigeration is compared, and the fan shield is controlled to open to one of the half open positions according to the difference between the two; when T3 is less than the first preset evaporation temperature, the press is closed and the fan shield is closed.
The control method according to claim 1, wherein if T1≥M1, T2≥M2, and when ΔT1 is smaller than the frozen preset temperature difference ΔT1', the control method further comprises setting a plurality of consecutive freeze temperature difference thresholds. And determining, according to the freezing temperature difference threshold interval where ΔT1 is located, the opening of the fan shielding to a predetermined half open position, wherein ΔT1 is greater than or equal to the difference between M1 and T1′.
The control method according to claim 1, wherein when the fan is turned on, the cumulative opening time t of the fan is recorded, and when the fan opening time reaches a preset length, the refrigerator is determined to be overloaded, and the display or the warning information is displayed.
The control method according to claim 5, wherein the control system clears the cumulative opening time t of the fan when the fan is turned off.
The control method according to claim 1, wherein the control method further comprises comparing the real-time temperatures T1 and T2 of the freezing compartment and the refrigerating compartment with the threshold temperatures m1 and m2 of the closed cooling in the refrigeration process of the refrigerator. And when T1 ≤ m1, T2 ≤ m2, the fan is turned off.
The control method according to claim 7, wherein when T1 ≤ m1, T2 > m2, the temperature T3 of the evaporator is detected;

If T3 is greater than or equal to the second preset evaporation temperature, keep the press open;

If T3 is less than the second predetermined evaporation temperature, the press is turned off.
A refrigerator using the control method according to any one of claims 1-8, the refrigerator having a freezing compartment, a refrigerating compartment, a refrigeration system, and a control system, the refrigeration system including a press, an evaporator, a cooling duct, and a fan disposed in the cooling air duct, wherein the cooling air duct is further provided with a refrigerating damper and a fan shielding disposed corresponding to the fan, wherein the fan shielding is used to adjust a supply air volume of the freezing chamber when the fan is operated, The fan shield is provided with a closing, opening and a plurality of half open positions.