CN112197488B

CN112197488B - Evaporator defrosting method and device, refrigerator, computer equipment and storage medium

Info

Publication number: CN112197488B
Application number: CN202010675636.1A
Authority: CN
Inventors: 田德强; 李平; 夏俊伟; 戚悦
Original assignee: TCL Home Appliances Hefei Co Ltd
Current assignee: TCL Home Appliances Hefei Co Ltd
Priority date: 2020-07-14
Filing date: 2020-07-14
Publication date: 2022-03-11
Anticipated expiration: 2040-07-14
Also published as: CN112197488A

Abstract

The invention relates to a defrosting method and a defrosting device for an evaporator, a refrigerator, computer equipment and a storage medium, wherein the method comprises the steps of acquiring an induction capacitance value on the evaporator and the refrigerating time of a refrigerating chamber; detecting whether the induction capacitance value is matched with a preset capacitance value or not, and detecting whether the refrigerating time of the refrigerating chamber is matched with a first preset time or not; and when the induction capacitance value is matched with the preset capacitance value and the refrigerating time of the refrigerating chamber is matched with the first preset time, starting a defrosting system to defrost the evaporator. According to the method, whether the frost layer on the evaporator reaches the designated thickness or not is conveniently determined according to the induction capacitance value on the evaporator, whether the thickness of the frost layer on the evaporator reduces the refrigeration efficiency or not is conveniently determined according to the refrigeration time of the refrigerating chamber, and after the refrigeration time of the refrigerating chamber is matched with the first preset time, the frost layer is the defrosting cut-in time, so that the defrosting system is started when the frost layer affects the refrigeration effect, and the accuracy of the defrosting cut-in time is improved.

Description

Evaporator defrosting method and device, refrigerator, computer equipment and storage medium

Technical Field

The invention relates to the technical field of refrigerators, in particular to an evaporator defrosting method and device, a refrigerator, computer equipment and a storage medium.

Background

With the great progress of the times and the leap-type development of the society, the living standard and the living quality of people are further improved, and the requirements of household appliances are more and more advanced, in particular to refrigerator household appliance products which are closely connected with the daily life of people. More and more advanced and intelligent food fresh-keeping indirect cooling type refrigerators become a new favorite for modern life of people at present. Compared with the direct-cooling refrigerator, the indirect-cooling refrigerator has the advantages of uniform temperature in the compartment, high refrigeration speed, high appearance grade, high-end atmosphere and the like. In the using process of the indirect cooling refrigerator, because the water in the stored food is evaporated and the user regularly opens and closes the door, even the user puts too much food with higher temperature and higher humidity at one time, particularly in the summer of high temperature and high humidity, the times of opening and closing the door of the food is too many or the user forgets to close the door after taking the food sometimes, and other special conditions, the refrigerator can work and operate for a long time in the environment of high temperature and high humidity, so that a thicker ice layer is formed on the surface of the evaporator, the heat exchange thermal resistance on the surface of the evaporator and the circulating resistance of the air on the surface of the evaporator are increased, and the heat exchange coefficient of the air side on the surface of the evaporator and the heat transfer coefficient of the evaporator are reduced.

The traditional defrosting methods include timing defrosting, temperature difference defrosting, pressure difference control defrosting and other defrosting methods. The timing type control method is widely used because of its simple control and easy operation. Other conventional defrosting methods cannot be widely adopted due to the complexity of control logic, reliability, economy, misjudgment, rationality, accuracy and the like.

However, the conventional timing defrosting method is just timing, so that defrosting can be performed only within a fixed time, and whether the system really needs defrosting can not be accurately judged, so that the defrosting cut-in time cannot be accurately controlled. Due to the consideration of the safety margin of the refrigeration cycle system, frequent starting of the defrosting procedure often occurs, which causes energy waste, and even the situations of 'defrosting without frost' or 'defrosting without frost' occur.

Disclosure of Invention

Based on this, there is a need for an evaporator defrosting method, apparatus, refrigerator, computer device, and storage medium that improve the accuracy of the defrost cut-in time.

An evaporator defrosting method comprising: acquiring an induction capacitance value on an evaporator and the refrigerating time of a refrigerating chamber; detecting whether the induction capacitance value is matched with a preset capacitance value or not, and detecting whether the refrigerating time of the refrigerating chamber is matched with a first preset time or not; and when the induction capacitance value is matched with the preset capacitance value and the refrigerating time of the refrigerating chamber is matched with the first preset time, starting a defrosting system to defrost the evaporator.

In one embodiment, before obtaining the capacitance value induced on the evaporator and the refrigerating time of the refrigerating chamber, the method further includes: acquiring external environment parameters; and acquiring the preset capacitance value according to the external environment parameter.

In one embodiment, the obtaining the preset capacitance value according to the external environment parameter includes: obtaining the thickness of a frost layer according to the external environment parameters; and acquiring the corresponding preset capacitance value according to the thickness of the frost layer.

In one embodiment, the external environmental parameters include an ambient temperature parameter and an ambient humidity parameter.

In one embodiment, the detecting whether the sensing capacitance value matches a preset capacitance value includes: and detecting whether the induction capacitance value is larger than or equal to the preset capacitance value.

In one embodiment, after detecting whether the sensing capacitance value matches a preset capacitance value, the method further includes: when the induction capacitance value is not matched with the preset capacitance value, the refrigerating time and the temperature of the refrigerating chamber are obtained; detecting whether the temperature of the freezing chamber is matched with a preset temperature or not; when the temperature of the freezing chamber is matched with the preset temperature, detecting whether the refrigerating time of the freezing chamber is matched with second preset time; and when the refrigerating time of the freezing chamber is matched with the second preset time, starting a defrosting system to defrost the evaporator.

In one embodiment, the method further comprises: when the temperature of freezing room with when presetting the temperature and not matching, it is repeated acquire the induction capacitance value on the evaporimeter and the refrigeration time of cold-stored room, detect whether induction capacitance value matches with presetting the capacitance value and detect the refrigeration time of cold-stored room and the first step of presetting time and matching.

In one embodiment, the method further comprises: when the refrigerating time of the freezing chamber is not matched with the second preset time, the steps of obtaining the induction capacitance value on the evaporator and the refrigerating time of the refrigerating chamber, detecting whether the induction capacitance value is matched with the preset capacitance value and detecting whether the refrigerating time of the refrigerating chamber is matched with the first preset time are repeated.

An evaporator defrosting apparatus, the apparatus comprising:

the acquisition module is used for acquiring the induction capacitance value on the evaporator and the refrigerating time of the refrigerating chamber;

the processing module is used for detecting whether the induction capacitance value is matched with a preset capacitance value or not and detecting whether the refrigerating time of the refrigerating chamber is matched with a first preset time or not; and when the induction capacitance value is matched with the preset capacitance value and the refrigerating time of the refrigerating chamber is matched with the first preset time, starting a defrosting system to defrost the evaporator.

The utility model provides a refrigerator, includes box, refrigeration cycle system, defrost system and as in above-mentioned embodiment the evaporimeter defroster, the box has cold-stored room and freezing room, refrigeration cycle system's evaporimeter is close to freezing room setting, freezing room with cold-stored room intercommunication, acquisition module set up in the box, acquisition module's input gathers the response capacitance value on the evaporimeter and the refrigeration time of cold-stored room respectively, acquisition module's output with processing module's input is connected, processing module's output with defrost system connects, defrost system is close to refrigeration cycle system's evaporimeter setting, processing module is used for controlling defrost system's opening and closing.

A computer device comprising a memory and a processor, the memory storing a computer program, the processor implementing the following steps when executing the computer program:

acquiring an induction capacitance value on an evaporator and the refrigerating time of a refrigerating chamber;

detecting whether the induction capacitance value is matched with a preset capacitance value or not, and detecting whether the refrigerating time of the refrigerating chamber is matched with a first preset time or not;

and when the induction capacitance value is matched with the preset capacitance value and the refrigerating time of the refrigerating chamber is matched with the first preset time, starting a defrosting system to defrost the evaporator.

A computer-readable storage medium, on which a computer program is stored which, when executed by a processor, carries out the steps of:

detecting whether the induction capacitance value is matched with a preset capacitance value or not; and detecting whether the refrigerating time of the refrigerating chamber is matched with a first preset time;

According to the defrosting method and device for the evaporator, the refrigerator, the computer equipment and the storage medium, whether the frost layer on the evaporator reaches the specified thickness or not is determined conveniently according to the induction capacitance value on the evaporator, whether the thickness of the frost layer on the evaporator reduces the refrigeration efficiency or not is determined conveniently according to the detection result of the refrigeration time of the refrigerating chamber and the first preset time, and the defrosting cut-in time is determined after the refrigeration time of the refrigerating chamber is matched with the first preset time, so that the defrosting system is started when the refrigeration effect of the frost layer is influenced, and the accuracy of the defrosting cut-in time is improved.

Drawings

FIG. 1 is a schematic flow diagram of an evaporator defrosting method according to one embodiment;

FIG. 2 is a block diagram of an evaporator defrost device in one embodiment;

FIG. 3 is a schematic structural view of a refrigerator according to an embodiment;

FIG. 4 is a diagram illustrating an internal structure of a computer device according to an embodiment.

Detailed Description

To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The invention relates to an evaporator defrosting method. In one embodiment, the evaporator defrosting method includes: acquiring an induction capacitance value on an evaporator and the refrigerating time of a refrigerating chamber; detecting whether the induction capacitance value is matched with a preset capacitance value or not and detecting whether the refrigerating time of the refrigerating chamber is matched with a first preset time or not; when the induction capacitance value is matched with the preset capacitance value and the refrigerating time of the refrigerating chamber is matched with the first preset time, the defrosting system is started to defrost the evaporator. According to the method, whether the frost layer on the evaporator reaches the designated thickness or not is conveniently determined according to the sensing capacitance value on the evaporator, whether the frost layer thickness on the evaporator reduces the refrigeration efficiency or not is conveniently determined according to the detection result of the refrigeration time of the refrigeration chamber and the first preset time, and after the refrigeration time of the refrigeration chamber is matched with the first preset time, the frost cut-in time is obtained, so that the defrosting system is started when the frost layer has an influence on the refrigeration effect, and the accuracy of the defrosting cut-in time is improved.

Please refer to fig. 1, which is a flowchart illustrating an evaporator defrosting method according to an embodiment of the present invention.

An evaporator defrosting method includes some or all of the following steps.

S100: and acquiring the induction capacitance value on the evaporator and the refrigerating time of the refrigerating chamber.

In this embodiment, the formation structure of the sensing capacitor on the evaporator comprises a sensor polar plate, an evaporator radiating fin and an insulating interlayer, wherein the sensor polar plate and the evaporator radiating fin are arranged in parallel, and the insulating interlayer is positioned between the sensor polar plate and the evaporator radiating fin. The sensing capacitance value is the capacitance value on the evaporimeter that is connected sensor polar plate and collection module, gathers through collection module. In addition, in the process of refrigeration, the frost layer formed by condensation on the evaporator radiating fins is also positioned between the sensor polar plate and the evaporator radiating fins, so that the induction capacitance value on the evaporator is changed, the acquisition module acquires the real-time induction capacitance value on the evaporator, namely the acquisition module acquires the induction capacitance value on the evaporator which changes along with time, and the subsequent detection of the thickness condition of the frost layer on the evaporator is facilitated. In one embodiment, the acquisition module has a defrost capacitive sensing sensor, and the sensing capacitance on the evaporator is acquired by the defrost capacitive sensing sensor. In one embodiment, the refrigeration time of the refrigeration compartment is obtained through an acquisition module, for example, the acquisition module has a refrigeration sensor, and the refrigeration sensor determines a refrigeration cycle of the refrigeration compartment according to a temperature change of the refrigeration compartment, that is, obtains a current single refrigeration time of the refrigeration compartment, that is, obtains a current single cycle refrigeration time of the refrigeration compartment, so as to facilitate a subsequent determination of an on-time of the defrosting system according to the refrigeration time, and further facilitate an improvement of an accuracy of the defrosting cut-in time.

S200: whether the induction capacitance value is matched with a preset capacitance value or not is detected, and whether the refrigerating time of the refrigerating chamber is matched with a first preset time or not is detected.

S300: when the induction capacitance value is matched with the preset capacitance value and the refrigerating time of the refrigerating chamber is matched with the first preset time, the defrosting system is started to defrost the evaporator.

The preset capacitance value is automatically set in the program, and is a capacitance limit value sensed by a defrosting capacitance sensing sensor in the acquisition module, namely, a capacitance value corresponding to the thickness of a frost layer which is formed on the evaporator and is enough to influence the refrigeration effect. The preset capacitance value is determined by placing a container for containing water in the refrigerating chamber to increase the humidity of the air in the refrigerating chamber so as to accelerate the frost formation process on the surface of the evaporator and the maximum frost layer thickness on the surface of the evaporator. The preset capacitance value is used as a basis for judging the size of the induction capacitance value, and the condition of a frost layer is convenient to determine according to the size relation between the induction capacitance value and the preset capacitance value, so that whether the refrigeration time needs to be detected or not is convenient to determine according to the detection result of the induction capacitance value and the preset capacitance value subsequently. The first preset time is the refrigerating time of the refrigerating chamber when the frost thickness on the evaporator reaches the point of influencing the refrigerating effect.

In one embodiment, the preset capacitance value is determined according to the external environment condition, that is, under different external environment parameters, a frost layer thickness enough to affect the refrigeration effect is to be formed on the evaporator, and the induction capacitance value corresponding to this frost layer is used as the preset capacitance value.

In one embodiment, the thickness of the frost layer corresponding to the preset capacitance value is the maximum frost thickness of the sensing capacitor, that is, the thickness of the frost layer corresponding to the preset capacitance value is the maximum frost thickness between the sensor electrode plate and the evaporator cooling fin. Thus, the frost thickness reaches the maximum value at this time, and the frost thickness is enough to affect the refrigeration effect at this time, that is, the defrosting system needs to be started at this time, so that the thickest frost layer is removed in a single defrosting operation, thereby reducing the starting frequency of starting the defrosting system and reducing the power consumption.

In one embodiment, the capacitance value corresponding to the thickness of the frost layer formed on the evaporator, which is sufficient to affect the cooling effect, is a fixed-value capacitance, and the preset capacitance value is smaller than the fixed-value capacitance, for example, a thickness immediately before the fixed-value capacitance is reached, the capacitance value corresponding to the thickness is set as the preset capacitance value; for another example, the thickness of the frost layer corresponding to the preset capacitance value is smaller than the thickness of the frost layer corresponding to the fixed-value capacitance, and the difference between the thickness of the frost layer corresponding to the preset capacitance value and the thickness of the frost layer corresponding to the fixed-value capacitance is within a fixed-value range. Like this, the thickness that the predetermined capacitance value corresponds is less than the frost layer thickness that is enough to influence the refrigeration effect for before the frost layer reaches the frost layer thickness that is enough to influence the refrigeration effect, through the detection of induction capacitance value with the predetermined capacitance value, play the effect of early warning in advance, reduced the too thick too big probability of single defrosting consumption that leads to defrosting system in frost layer.

The capacitance value that forms the frost layer thickness that is enough to influence the refrigeration effect on the evaporimeter and corresponds is the definite value electric capacity, and induction capacitance value matches with preset capacitance value, has shown that the capacitance value of the current induction capacitance of evaporimeter reaches preset capacitance value, has shown promptly that the current induction capacitance value of evaporimeter reaches the definite value electric capacity, has also shown that the frost layer thickness on the current evaporimeter reaches the frost layer thickness that preset capacitance value corresponds. At this time, the frost layer on the surface of the evaporator will affect the refrigeration effect, for example, the heat exchange resistance on the surface of the evaporator and the circulation resistance of the air on the surface of the evaporator; in another example, increasing the thermal resistance of the surface heat exchange and the air circulation resistance of the surface of the evaporator easily leads to the reduction of the heat exchange coefficient of the air side of the surface of the evaporator and the heat transfer coefficient of the evaporator. In order to accurately determine whether the defrosting system needs to be started for defrosting at the moment, namely, whether the defrosting cut-in time is determined at the moment, the judgment needs to be carried out according to the refrigerating time of the refrigerating chamber, because the thickness of the frost layer on the surface of the evaporator is about to reach the effect of influencing the refrigerating effect after the induction capacitance value reaches the preset capacitance value, and the thickness of the frost layer on the surface of the evaporator influences the refrigerating time of the refrigerating chamber, namely, whether the defrosting cut-in time is determined at the moment accurately according to the change condition of the refrigerating time of the refrigerating chamber in a period from the frost thickness corresponding to the preset capacitance value to the frost thickness corresponding to the constant value capacitor, so that the accuracy of the defrosting cut-in time is improved. In one embodiment, the first preset time is a refrigerating time of the refrigerating chamber when the frost thickness of the evaporator reaches a value affecting the start of the refrigerating effect under the same external environment as the preset capacitance value. And detecting whether the refrigerating time of the refrigerating chamber is matched with the first preset time, namely detecting whether the refrigerating time of the refrigerating chamber is influenced.

In this embodiment, when the sensing capacitance value matches the preset capacitance value, it indicates that the thickness of the frost layer on the evaporator reaches the thickness of the frost layer corresponding to the preset capacitance value. When the refrigerating time of the refrigerating chamber is matched with the first preset time, the fact that the current refrigerating time of the refrigerating chamber reaches the first preset time is indicated, namely the fact that the current refrigerating time of the refrigerating chamber is the refrigerating time that a frost layer on the evaporator influences a refrigerating effect is indicated, the frost thickness on the evaporator reaches a specified thickness, the refrigerating effect of the refrigerating chamber is reduced, the defrosting system is started to enable the frost layer on the surface of the evaporator to be eliminated, namely, the defrosting operation is started to be carried out on the frost layer on the surface of the evaporator, the frost layer on the surface of the evaporator is timely eliminated, and the accuracy of the cut-in defrosting time is improved.

In one embodiment, before obtaining the capacitance value induced on the evaporator and the refrigerating time of the refrigerating chamber, the method further comprises the following steps: acquiring external environment parameters; and acquiring a preset capacitance value according to the external environment parameters.

In this embodiment, the obtaining of the preset capacitance value is a corresponding relationship between the external environment parameter and the preset capacitance value obtained by the refrigerator in the experiment stage, that is, a corresponding relationship table between the external environment parameter and the preset capacitance value. And acquiring external environment parameters, namely determining corresponding preset capacitance values for the external environment where the evaporator is located according to the corresponding relation table of the external environment parameters and the preset capacitance values. Because outside air enters into cold-stored room or freezing room after, refrigeration cycle system is cooling according to the indoor temperature in room, this will make refrigeration cycle system need cool down the room that is linked together with the external environment, cool down the external environment promptly, and the air of external environment is that the room is constantly got into in the room of getting into certainly to make refrigeration cycle system's operating duration increase, and then make evaporimeter surface frosting thickness too big. Wherein, the frost layer thickness that the predetermined capacitance value corresponds is confirmed according to external environment parameter, make the frost layer thickness on evaporimeter surface can change according to external environment's the condition, thereby make under the external environment of difference, the frost layer thickness on evaporimeter surface is different, and then make different external environment parameter correspond the frost layer thickness that has different evaporimeters, and different frost layer thicknesses correspond to different capacitance values, be convenient for through the comparison to the capacitance value, confirm whether the frost layer on evaporimeter surface reaches the appointed thickness that the predetermined capacitance value corresponds, the convenience that detects evaporimeter surface thickness has been improved, the degree of difficulty is detected to evaporimeter surface thickness has been reduced.

In one embodiment, obtaining the preset capacitance value according to the external environment parameter includes: obtaining the thickness of a frost layer according to external environment parameters; and acquiring a corresponding preset capacitance value according to the thickness of the frost layer.

In this embodiment, the obtaining of the preset capacitance value is a corresponding relationship between the external environment parameter and the preset capacitance value obtained by the refrigerator in the experiment stage, that is, a corresponding relationship table between the external environment parameter and the preset capacitance value. And obtaining external environment parameters, namely determining the corresponding frost layer thickness according to the external environment parameters, and calculating the corresponding preset capacitance value according to the frost layer thickness and the capacitance formula. Because outside air enters into cold-stored room or freezing room after, refrigeration cycle system is cooling according to the indoor temperature in room, this will make refrigeration cycle system need cool down the room that is linked together with the external environment, cool down the external environment promptly, and the air of external environment is that the room is constantly got into in the room of getting into certainly to make refrigeration cycle system's operating duration increase, and then make evaporimeter surface frosting thickness too big. The frost layer thickness that the preset capacitance value corresponds is confirmed according to external environment parameter for the frost layer thickness on evaporimeter surface can change according to external environment's the condition, thereby makes under the external environment of difference, and the frost layer thickness on evaporimeter surface is different, and then makes different external environment parameter correspond the frost layer thickness that has different evaporimeters, and different frost layer thickness is corresponding to different capacitance values again. Like this, under the environmental condition of difference, be convenient for through to induction capacitance value and the comparison of predetermineeing the capacitance value, confirm whether the frost layer on evaporimeter surface reachs the appointed thickness that predetermines the capacitance value and correspond, avoided direct measurement frost layer thickness, reduced the evaporimeter surface thickness and detected the degree of difficulty.

In this embodiment, the acquisition of external environment parameters is realized through collection module, and collection module has ambient temperature sensor and humidity transducer, and ambient temperature sensor and humidity transducer set up in the refrigerator outside, are convenient for acquire the environmental aspect that the refrigerator was located. Because outside air enters into cold-stored room or freezing room after, refrigeration cycle system is cooling according to the indoor temperature in room, this will make refrigeration cycle system need cool down the room that is linked together with the external environment, cool down the external environment promptly, and the air of external environment is the indoor room of constantly entering certainly, thereby make refrigeration cycle system's operating duration increase, and then make evaporimeter surface frost thickness too big, therefore, need detect the external environment condition, thereby confirm preset capacitance value according to the external environment parameter, and then according to the match relation between the induction capacitance value on preset capacitance value and the evaporimeter, be convenient for confirm whether follow-up defrosting system of opening.

In one embodiment, the detecting whether the sensing capacitance value matches the predetermined capacitance value includes: and detecting whether the induction capacitance value is larger than or equal to a preset capacitance value.

In this embodiment, the preset capacitance value is automatically set inside the program, and the magnitude relationship between the sensing capacitance value and the preset capacitance value is detected, which indicates that the preset capacitance value is used as a basis for determining the magnitude of the sensing capacitance value, i.e. determining the magnitude relationship between the sensing capacitance value and the preset capacitance value, so as to determine the condition of the frost layer according to the magnitude relationship between the sensing capacitance value and the preset capacitance value, thereby facilitating the follow-up detection of the refrigeration time according to the magnitude relationship between the sensing capacitance value and the preset capacitance value.

In one embodiment, the thickness of the frost layer corresponding to the preset capacitance value is the maximum frost thickness of the sensing capacitor, that is, the thickness of the frost layer corresponding to the preset capacitance value is: the maximum frost thickness between the sensor plate and the evaporator fin. Thus, the frost thickness reaches the maximum value at this time, and the frost thickness is enough to affect the refrigeration effect at this time, that is, the defrosting system needs to be started at this time, so that the thickest frost layer is removed in a single defrosting operation, thereby reducing the starting frequency of starting the defrosting system and reducing the power consumption.

In one embodiment, the capacitance value corresponding to the thickness of the frost layer formed on the evaporator, which is sufficient to affect the cooling effect, is a constant capacitance value, and the preset capacitance value is smaller than the constant capacitance value, for example, a thickness immediately before the constant capacitance value is reached, the capacitance value corresponding to the thickness is set as the preset capacitance value; for another example, the thickness of the frost layer corresponding to the preset capacitance value is smaller than the thickness of the frost layer corresponding to the fixed-value capacitance, and the difference between the thickness of the frost layer corresponding to the preset capacitance value and the thickness of the frost layer corresponding to the fixed-value capacitance is within a fixed-value range. Like this, the thickness that the predetermined capacitance value corresponds is less than the frost layer thickness that is enough to influence the refrigeration effect for before the frost layer reaches the frost layer thickness that is enough to influence the refrigeration effect, through the detection of induction capacitance value with the predetermined capacitance value, play the effect of early warning in advance, reduced the too thick too big probability of single defrosting consumption that leads to defrosting system in frost layer.

In one embodiment, when the sensing capacitance value matches the preset capacitance value, the detecting whether the refrigerating time of the refrigerating chamber matches the first preset time includes: when the induction capacitance value is larger than or equal to a preset capacitance value, detecting whether the refrigerating time of the refrigerating chamber is larger than or equal to a first preset time; when the refrigerating time of the refrigerating chamber is matched with the first preset time, the starting of the defrosting system to defrost the evaporator comprises the following steps: and when the refrigerating time of the refrigerating chamber is greater than or equal to a first preset time, starting a defrosting system to defrost the evaporator.

In this embodiment, induction capacitance value is greater than or equal to and predetermines the capacitance value, it has shown that induction capacitance value on the evaporimeter has exceeded and has predetermine the capacitance value, it is thicker than the frost layer thickness that predetermines the capacitance value corresponding promptly to have shown the frost layer thickness on the evaporimeter this moment and be about to produce the influence to the refrigeration effect of each compartment, wherein, because the refrigeration cycle of cold-storage compartment is shorter, the influence that its refrigeration effect received is comparatively quick, the condition that refrigeration effect reduces is appeared at first in the refrigeration effect of cold-storage compartment promptly. In order to accurately determine the defrosting cut-in time of the defrosting system, the refrigeration time of the refrigerating chamber is detected, namely once the frost layer on the surface of the evaporator starts to influence the refrigeration effect, whether the thickness of the current frost layer of the evaporator reaches the thickness influencing the refrigeration effect can be determined by detecting the refrigeration time of the refrigerating chamber, so that the defrosting system can be conveniently and timely started to defrost the evaporator, and the accuracy of the follow-up defrosting cut-in time is improved.

In one embodiment, after detecting whether the sensing capacitance value matches the preset capacitance value, the method further includes: when the induction capacitance value is not matched with the preset capacitance value, the refrigerating time and the temperature of the refrigerating chamber are obtained; detecting whether the temperature of the freezing chamber is matched with a preset temperature or not; when the temperature of the freezing chamber is matched with the preset temperature, detecting whether the refrigerating time of the freezing chamber is matched with a second preset time; and when the refrigerating time of the freezing chamber is matched with the second preset time, starting a defrosting system to defrost the evaporator.

In this embodiment, the sensing capacitance value is not matched with the preset capacitance value, which indicates that the current capacitance value of the evaporator does not reach the preset capacitance value, that is, the thickness of the frost layer on the surface of the evaporator does not reach the specified thickness, that is, the thickness of the frost layer on the surface of the evaporator does not reach the thickness corresponding to the preset capacitance value, at this time, although the sensing capacitance value on the evaporator does not reach the preset capacitance value, the frost layer on the evaporator still affects the refrigeration effect of the freezing chamber, the frost layer still needs to be removed, in order to further improve the accuracy of the cut-in defrosting time, the temperature of the freezing chamber and the preset temperature are detected, the preset temperature is the upper limit value of the storage temperature of the preset freezing chamber defrosting cut-in time, and the preset temperature is in order to ensure the freezing, refrigerating and freshness-keeping qualities of foods in the freezing chamber and the refrigerating chamber in the indirect-cooling refrigerator, meanwhile, the storage quality of the indoor food during the defrosting and defrosting recovery periods can be ensured, so that the temperature rise of the frozen and refrigerated food is not too high. For example, the preset temperature may be-18 ℃. In order to determine whether the frost layer of the evaporator influences the refrigerating temperature of the freezing chamber, the existence of the frost layer on the evaporator reduces the cold quantity entering the freezing chamber, so that the temperature of the freezing chamber rises, whether the detection of the refrigerating time of the freezing chamber is needed or not is determined according to the matching condition of the temperature of the freezing chamber and the preset temperature, and the starting time of a subsequent defrosting system is determined according to the refrigerating time of the freezing chamber.

In one embodiment, after the temperature of the freezing chamber is matched with the preset temperature, the matching detection is performed on the refrigerating time of the freezing chamber and a second preset time, wherein the second preset time is the refrigerating time corresponding to the time when the frost layer on the evaporator influences the refrigerating effect of the freezing chamber, and when the refrigerating time of the freezing chamber is matched with the second preset time, it is indicated that the refrigerating time of the freezing chamber exceeds the normal refrigerating time of the freezing chamber, that is, it is indicated that the current refrigerating time of the freezing chamber is too long, that is, it is indicated that the frost layer on the evaporator is enough to influence the refrigerating effect of the freezing chamber, at this time, the defrosting operation needs to be performed on the frost layer on the evaporator, that is, the defrosting system is started to remove the frost layer on the evaporator, so that the defrosting is timely, and the accuracy of the defrosting time cut-in is improved.

In one embodiment, detecting whether the temperature of the freezer compartment matches a preset temperature comprises: detecting whether the temperature of the freezing chamber is greater than or equal to a preset temperature or not; when the temperature of freezing room and preset temperature match, whether the refrigeration time of detection freezing room matches with the second time of presetting includes: when the temperature of the freezing chamber is greater than or equal to the preset temperature, detecting whether the refrigerating time of the freezing chamber is greater than or equal to a second preset time; when the refrigerating time of the freezing chamber is matched with the second preset time, the starting of the defrosting system to defrost the evaporator comprises the following steps: and when the refrigerating time of the freezing chamber is greater than or equal to a second preset time, starting a defrosting system to defrost the evaporator.

In this embodiment, when the temperature of the freezing compartment is greater than or equal to the preset temperature, the frost layer on the surface of the evaporator is about to affect the refrigeration effect of the freezing compartment, and in order to further determine the defrosting cut-in time, the magnitude relationship between the refrigeration time of the freezing compartment and the second preset time is detected, for example, when the refrigeration time of the freezing compartment is greater than or equal to the second preset time, the frost layer on the surface of the evaporator has already affected the refrigeration effect of the freezing compartment, that is, the refrigeration effect of the freezing compartment is reduced, and the defrosting system is started to eliminate the frost layer on the surface of the evaporator, so that the frost layer on the surface of the evaporator is removed in time, and the accuracy of the defrosting cut-in time is further improved.

In one embodiment, after detecting whether the refrigerating time of the refrigerating compartment matches with the first preset time, the method further includes: when the refrigerating time of the refrigerating chamber is not matched with the first preset time, acquiring the refrigerating time and temperature of the freezing chamber; detecting whether the temperature of the freezing chamber is matched with a preset temperature or not; when the temperature of the freezing chamber is matched with the preset temperature, detecting whether the refrigerating time of the freezing chamber is matched with a second preset time; and when the refrigerating time of the freezing chamber is matched with the second preset time, starting a defrosting system to defrost the evaporator. The method has the advantages that whether the refrigerating time and the temperature of the refrigerating chamber need to be detected or not can be determined when the induction capacitance value is not matched with the preset capacitance value and the refrigerating time of the refrigerating chamber is not matched with the first preset time or the induction capacitance value is matched with the preset capacitance value and the refrigerating time of the refrigerating chamber is not matched with the first preset time, and whether a defrosting system needs to be started or not is determined according to the detection result, so that the defrosting accuracy is improved.

In one embodiment, when the temperature of the freezing chamber does not match the preset temperature, the steps of obtaining the sensing capacitance value on the evaporator and the refrigerating time of the refrigerating chamber, detecting whether the sensing capacitance value matches the preset capacitance value and detecting whether the refrigerating time of the refrigerating chamber matches the first preset time are repeated.

When the temperature of the freezing chamber is not matched with the preset temperature, the temperature of the freezing chamber is not increased, the temperature of the freezing chamber meets the requirement of the storage temperature condition of food in the refrigerator chamber, and the subsequent detection process of the refrigerating time of the freezing chamber is not needed. At the moment, the refrigeration process is continuously operated, namely, the steps of repeatedly acquiring the induction capacitance value on the evaporator and the refrigeration time of the refrigerating chamber, detecting whether the induction capacitance value is matched with the preset capacitance value and detecting whether the refrigeration time of the refrigerating chamber is matched with the first preset time are repeated.

And when the temperature of the freezing chamber is matched with the preset temperature, detecting whether the refrigerating time of the freezing chamber is matched with the second preset time. And when the refrigerating time of the freezing chamber is matched with the second preset time, starting a defrosting system to defrost the evaporator.

In one embodiment, the method further includes: when the refrigerating time of the freezing chamber is not matched with the second preset time, the induction capacitance value on the evaporator and the refrigerating time of the refrigerating chamber are repeatedly acquired, and the steps of detecting whether the induction capacitance value is matched with the preset capacitance value and detecting whether the refrigerating time of the refrigerating chamber is matched with the first preset time are repeated. When the refrigerating time of the freezing chamber is not matched with the second preset time, the fact that the refrigerating time of the freezing chamber does not reach the normal refrigerating time of the freezing chamber is indicated, the current refrigerating time of the freezing chamber is short, and the fact that a frost layer on the evaporator is not enough to affect the refrigerating effect of the freezing chamber is also indicated.

In this embodiment, when the temperature of the freezing chamber is not matched with the preset temperature and any one of the conditions that the refrigerating time of the freezing chamber is not matched with the second preset time exists, it indicates that the refrigerator does not need to be defrosted, and at this time, the steps of repeatedly acquiring the sensing capacitance value on the evaporator and the refrigerating time of the refrigerating chamber, detecting whether the sensing capacitance value is matched with the preset capacitance value and detecting whether the refrigerating time of the refrigerating chamber is matched with the first preset time are repeated. The refrigeration process can be continuously operated under the condition that defrosting is not needed, whether a defrosting system needs to be started or not is automatically detected in the refrigeration process, the fresh-keeping effect of food in a freezing chamber can be ensured, and efficient and accurate defrosting control is realized.

In one embodiment, the evaporator is a freezing evaporator, that is, the sensing capacitance value on the evaporator and the refrigerating time of the refrigerating chamber are obtained as follows: and acquiring the induction capacitance value on the freezing evaporator and the refrigerating time of the refrigerating chamber. In this embodiment, only one evaporator of the refrigeration cycle system is the freezing evaporator, the freezing evaporator is arranged close to the freezing compartment, the freezing compartment is communicated with the cold storage compartment through an air supply channel, air circulation in the compartment is forced through the air supply system, cold air in the freezing compartment is sent into the cold storage compartment through the air supply channel, and therefore cold energy in the freezing compartment is sent into the cold storage compartment to realize refrigeration of each compartment.

In one embodiment, the capacitance value of the evaporator, the refrigerating time of the refrigerating chamber and the thickness of the frost layer on the evaporator correspond to the following relationship: when the induction capacitance value is 83.86pf, the refrigerating time of the refrigerating chamber is 7min, and the thickness of the frost layer on the evaporator is 0; when the induction capacitance value is 84.35pf, the refrigerating time of the refrigerating chamber is 8min, and the thickness of a frost layer on the evaporator is 2-4 mm; when the induction capacitance value is 84.71pf, the refrigerating time of the refrigerating chamber is 10.4min, and the thickness of the frost layer on the evaporator is 5-7 mm; when the induction capacitance value is 86.1pf, the refrigerating time of the refrigerating chamber is 15.3min, and the thickness of the frost layer on the evaporator is 10-12 mm. The sensing capacitance value on the evaporator, the refrigerating time of the refrigerating chamber and the frost layer thickness on the evaporator correspond to each other, the sensing capacitance value is set to be a preset capacitance value when 86.1pf is set, the refrigerating time of the corresponding refrigerating chamber is set to be first preset time when 15.3min is set, and therefore when the capacitance value corresponding to the frost layer thickness of the evaporator reaches the preset capacitance value, the refrigerating time of the refrigerating chamber also reaches the first preset time, the defrosting system is convenient to open in time, and the accuracy of defrosting time is improved.

It should be understood that, although the steps in the flowchart of fig. 1 are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least a portion of the steps in fig. 1 may include multiple steps or multiple stages, which are not necessarily performed at the same time, but may be performed at different times, which are not necessarily performed in sequence, but may be performed in turn or alternately with other steps or at least a portion of the other steps or stages.

In one embodiment, referring to fig. 2, an evaporator defrosting apparatus 10 includes: an acquisition module 100 and a processing module 200, wherein:

the acquisition module 100 is used for acquiring an induction capacitance value on the evaporator and the refrigerating time of the refrigerating chamber;

the processing module 200 is configured to detect whether the sensing capacitance value is matched with a preset capacitance value, and detect whether the refrigeration time of the refrigeration compartment is matched with a first preset time; when the induction capacitance value is matched with the preset capacitance value and the refrigerating time of the refrigerating chamber is matched with the first preset time, the defrosting system is started to defrost the evaporator.

In this embodiment, the structure for forming the sensing capacitor on the evaporator includes a sensor electrode plate, an evaporator heat dissipation fin and an insulating interlayer, the sensor electrode plate and the evaporator heat dissipation fin are arranged in parallel, and the insulating interlayer is located between the sensor electrode plate and the evaporator heat dissipation fin. Wherein, the sensor polar plate is connected with collection module 100, be convenient for collection module 100 to acquire induction capacitance value, even be convenient for acquire induction capacitance value on the evaporimeter, and, in the refrigeration process, the frost layer that condenses to form on the evaporimeter radiating fin also is located between sensor polar plate and the evaporimeter radiating fin simultaneously, make induction capacitance value on the evaporimeter change, thereby make collection module 100 acquire the real-time induction capacitance value on the evaporimeter, collection module 100 acquires the induction capacitance value that changes along with time on the evaporimeter promptly, and then be convenient for follow-up thickness condition to the frost layer on the evaporimeter and detect.

In one embodiment, the acquisition module 100 has a defrost capacitive sensing sensor, and the sensing capacitance on the evaporator is obtained by the defrost capacitive sensing sensor. In one embodiment, the refrigeration time of the refrigeration compartment is obtained through the acquisition module 100, for example, the acquisition module 100 has a refrigeration sensor, and the refrigeration sensor determines the refrigeration cycle of the refrigeration compartment according to the problem change of the refrigeration compartment, that is, obtains the current single refrigeration time of the refrigeration compartment, that is, obtains the current single cycle refrigeration time of the refrigeration compartment, so as to facilitate the subsequent determination of the start time of the defrosting system according to the refrigeration time, and further facilitate the improvement of the accuracy of the defrosting cut-in time.

Moreover, the preset capacitance value and the first preset time automatically set by the processing module 200 are convenient to compare with the induction capacitance value collected in the collection module 100 and the refrigeration time of the refrigeration compartment, for example, the processing module 200 uses the preset capacitance value as a basis for judging the magnitude of the induction capacitance value, so that the processing module 200 determines the condition of the frost layer according to the magnitude relation between the induction capacitance value and the preset capacitance value, and thus the subsequent processing module 200 determines whether to detect the refrigeration time according to the detection result of the induction capacitance value and the preset capacitance value; for another example, the processing module 200 detects that the sensing capacitance value matches the preset capacitance value, which indicates that the capacitance value of the current sensing capacitance of the evaporator reaches the preset capacitance value, i.e., indicates that the current sensing capacitance value of the evaporator reaches the constant capacitance value, i.e., indicates that the thickness of the frost layer on the current evaporator reaches the thickness of the frost layer corresponding to the preset capacitance value. At this time, the frost layer on the surface of the evaporator will affect the refrigeration effect, for example, the heat exchange thermal resistance on the surface of the evaporator and the circulation resistance of the air on the surface of the evaporator are affected, and for example, the heat exchange thermal resistance on the surface and the circulation resistance of the air on the surface of the evaporator are increased, which easily causes the heat exchange coefficient of the air side on the surface of the evaporator and the heat transfer coefficient of the evaporator to be reduced, in order to facilitate the processing module 200 to accurately determine whether the defrosting system needs to be turned on for defrosting at this time, that is, the processing module 200 determines whether the defrosting cut-in time is the defrosting cut-in time at this time, and needs to determine according to the refrigeration time of the cold storage compartment, because the thickness of the frost layer on the surface of the evaporator will affect the refrigeration effect after the sensing capacitance value reaches the preset capacitance value, and the thickness of the frost layer on the surface of the evaporator is enough to affect the refrigeration time of the cold storage compartment, that the frost layer corresponding to the preset capacitance value is thick enough to affect the refrigeration effect for a period, according to the change condition of the refrigerating time of the refrigerating chamber, whether the time is the defrosting cut-in time can be accurately judged, and therefore the accuracy of the defrosting cut-in time is improved.

In one embodiment, the first predetermined time is a cooling time of the refrigerating compartment when the frost thickness of the evaporator reaches a value affecting the start of the cooling effect under the same external environment as the predetermined capacitance value. Detecting whether the refrigerating time of the refrigerating chamber is matched with a first preset time or not, namely detecting the current refrigerating time of the refrigerating chamber and whether the refrigerating time of the refrigerating chamber with the influenced refrigerating effect is reached or not; for another example, the processing module 200 detects that the refrigerating time of the refrigerating compartment is matched with the first preset time, which indicates that the current refrigerating time of the refrigerating compartment reaches the first preset time, that is, indicates that the current refrigerating time of the refrigerating compartment is: the frost thickness on the evaporator reaches the refrigeration time that influences the refrigeration effect, and the frost thickness on the evaporator reaches appointed thickness this moment, produces the effect that reduces to the refrigeration effect of cold-stored room, and processing module 200 sends the defrosting instruction to the defrosting system to open defrosting system and make the frost layer on evaporator surface begin to eliminate, begins to carry out the defrosting operation to the frost layer on evaporator surface promptly, makes the frost layer on evaporator surface in time got rid of, has improved the accuracy of defrosting cut-in time.

In one embodiment, the acquisition module 100 is further configured to obtain external environment parameters; and acquiring a preset capacitance value according to the external environment parameters. In this embodiment, the acquisition of the preset capacitance value by the acquisition module 100 acquires the corresponding relationship between the external environment parameter and the preset capacitance value in the experiment stage, that is, the acquisition module 100 acquires the corresponding relationship table between the external environment parameter and the preset capacitance value. The acquisition module 100 acquires the external environment parameters, that is, determines the corresponding preset capacitance value for the external environment where the evaporator is located according to the corresponding relationship table between the external environment parameters and the preset capacitance value. Because outside air enters into cold-stored room or freezing room after, refrigeration cycle system is cooling according to the indoor temperature in room, this will make refrigeration cycle system need cool down the room that is linked together with the external environment, cool down the external environment promptly, and the air of external environment is that the room is constantly got into in the room of getting into certainly to make refrigeration cycle system's operating duration increase, and then make evaporimeter surface frosting thickness too big. Wherein, the frost layer thickness that the predetermined capacitance value corresponds is confirmed according to external environment parameter, make the frost layer thickness on evaporimeter surface can change according to external environment's the condition, thereby make under the external environment of difference, the frost layer thickness on evaporimeter surface is different, and then make different external environment parameter correspond the frost layer thickness that has different evaporimeters, and different frost layer thicknesses correspond to different capacitance values, be convenient for through the comparison to the capacitance value, confirm whether the frost layer on evaporimeter surface reaches the appointed thickness that the predetermined capacitance value corresponds, the convenience that detects evaporimeter surface thickness has been improved, the degree of difficulty is detected to evaporimeter surface thickness has been reduced.

In one embodiment, the acquisition module 100 is further configured to obtain the thickness of the frost layer according to the external environment parameter; and acquiring a corresponding preset capacitance value according to the thickness of the frost layer.

In this embodiment, the acquisition of the preset capacitance value by the acquisition module 100 acquires the corresponding relationship between the external environment parameter and the preset capacitance value in the experiment stage, that is, the acquisition module 100 acquires the corresponding relationship table between the external environment parameter and the preset capacitance value. The acquisition module 100 acquires the external environment parameters, that is, determines the corresponding frost thickness according to the external environment parameters, and then calculates the corresponding preset capacitance value according to the frost thickness and the capacitance formula.

Because outside air enters into cold-stored room or freezing room after, refrigeration cycle system is cooling according to the indoor temperature in room, this will make refrigeration cycle system need cool down the room that is linked together with the external environment, cool down the external environment promptly, and the air of external environment is that the room is constantly got into in the room of getting into certainly to make refrigeration cycle system's operating duration increase, and then make evaporimeter surface frosting thickness too big. The frost layer thickness that the preset capacitance value corresponds is confirmed according to external environment parameter for the frost layer thickness on evaporimeter surface can change according to external environment's the condition, thereby makes under the external environment of difference, and the frost layer thickness on evaporimeter surface is different, and then makes different external environment parameter correspond the frost layer thickness that has different evaporimeters, and different frost layer thickness is corresponding to different capacitance values again. Like this, under the environmental condition of difference, be convenient for through to induction capacitance value and the comparison of predetermineeing the capacitance value, confirm whether the frost layer on evaporimeter surface reachs the appointed thickness that predetermines the capacitance value and correspond, avoided direct measurement frost layer thickness, reduced the evaporimeter surface thickness and detected the degree of difficulty.

In one embodiment, the collection module 100 has an ambient temperature sensor and a humidity sensor, which are disposed outside the refrigerator to facilitate obtaining an ambient condition of the refrigerator. Because outside air enters into cold-stored room or freezing room after, refrigeration cycle system is cooling according to the indoor temperature in room, this will make refrigeration cycle system need cool down the room that is linked together with the external environment, cool down the external environment promptly, and the air of external environment is the indoor room of constantly entering certainly, thereby make refrigeration cycle system's operating duration increase, and then make evaporimeter surface frost thickness too big, therefore, need detect the external environment condition, thereby confirm preset capacitance value according to the external environment parameter, and then according to the match relation between the induction capacitance value on preset capacitance value and the evaporimeter, be convenient for confirm whether follow-up defrosting system of opening.

In one embodiment, the processing module 200 is further configured to detect whether the sensing capacitance is greater than or equal to a preset capacitance; and when the refrigerating time of the refrigerating chamber is greater than or equal to a first preset time, starting a defrosting system to defrost the evaporator. In this embodiment, the processing module 200 calculates that the induced capacitance value is greater than or equal to the preset capacitance value, which indicates that the induced capacitance value on the evaporator exceeds the preset capacitance value, i.e., indicates that the thickness of the frost layer on the evaporator is thicker than the thickness of the frost layer corresponding to the preset capacitance value, and the frost layer on the evaporator at this time is about to affect the cooling effect of each compartment, wherein, because the cooling cycle of the refrigerating compartment is shorter, the effect of the cooling effect is affected more quickly, i.e., the condition that the cooling effect of the refrigerating compartment is first reduced is first achieved. In order to accurately determine the defrosting cut-in time of the defrosting system, the refrigeration time of the refrigerating chamber is detected, that is, once the frost layer on the surface of the evaporator starts to influence the refrigeration effect, whether the thickness of the current frost layer of the evaporator reaches the thickness influencing the refrigeration effect can be determined by detecting the refrigeration time of the refrigerating chamber, so that the subsequent timely processing module 200 can conveniently send an instruction to the defrosting system, the defrosting system is started to defrost the evaporator, and the accuracy of the subsequent defrosting cut-in time is improved.

In one embodiment, the processing module 200 is further configured to obtain the refrigerating time and temperature of the refrigerating chamber when the sensing capacitance value is not matched with the preset capacitance value; detecting whether the temperature of the freezing chamber is matched with a preset temperature or not; when the temperature of the freezing chamber is matched with the preset temperature, detecting whether the refrigerating time of the freezing chamber is matched with a second preset time; and when the refrigerating time of the freezing chamber is matched with the second preset time, starting a defrosting system to defrost the evaporator.

In this embodiment, the processing module 200 calculates that the sensing capacitance value is not matched with the preset capacitance value, which indicates that the current capacitance value of the evaporator does not reach the preset capacitance value, that is, the thickness of the frost layer on the surface of the evaporator does not reach the specified thickness, that is, the thickness of the frost layer on the surface of the evaporator does not reach the thickness corresponding to the preset capacitance, at this time, although the sensing capacitance value on the evaporator does not reach the preset capacitance value, at this time, the frost layer on the evaporator still affects the refrigerating effect of the refrigerating chamber, and the frost layer still needs to be removed. In order to further improve the accuracy of the defrosting cut-in time, the processing module 200 compares the temperature of the freezing chamber with a preset temperature, that is, whether the frost layer of the evaporator affects the refrigerating temperature of the freezing chamber is determined, due to the existence of the frost layer on the evaporator, the amount of cold entering the freezing chamber is reduced, so that the temperature of the freezing chamber rises, the processing module 200 determines whether the detection of the refrigerating time of the freezing chamber is needed or not according to the matching condition of the temperature of the freezing chamber and the preset temperature, and the processing module 200 determines the starting time of the subsequent defrosting system according to the refrigerating time of the freezing chamber.

In one embodiment, after the temperature of the freezing chamber is matched with the preset temperature, the processing module 200 matches the refrigerating time of the freezing chamber with a second preset time, where the second preset time is: when the frost layer on the evaporator starts to affect the refrigerating effect of the refrigerating chamber, the corresponding refrigerating time is needed. When the refrigerating time of the freezing chamber is matched with the second preset time, the fact that the refrigerating time of the freezing chamber exceeds the normal refrigerating time of the freezing chamber is indicated, that is, the current refrigerating time of the freezing chamber is too long is indicated, that is, it is indicated that a frost layer on the evaporator is enough to affect the refrigerating effect of the freezing chamber, at this time, a defrosting operation needs to be performed on the frost layer on the evaporator, that is, the processing module 200 sends a defrosting instruction to the defrosting system to start the defrosting system, so that the frost layer on the evaporator is removed, the evaporator is defrosted in time, and the accuracy of defrosting cut-in time is further improved.

In one embodiment, the processing module 200 is further configured to repeat the steps of obtaining the sensing capacitance value of the evaporator and the refrigerating time of the refrigerating chamber, detecting whether the sensing capacitance value is matched with the preset capacitance value, and detecting whether the refrigerating time of the refrigerating chamber is matched with the first preset time when the temperature of the freezing chamber is not matched with the preset temperature;

in one embodiment, the processing module 200 is further configured to repeat the steps of obtaining the sensing capacitance value on the evaporator and the refrigerating time of the refrigerating chamber, detecting whether the sensing capacitance value matches the preset capacitance value, and detecting whether the refrigerating time of the refrigerating chamber matches the first preset time when the refrigerating time of the freezing chamber does not match the second preset time.

In one embodiment, referring to fig. 3, a refrigerator 20 includes: the box 300, the refrigeration cycle system 400, the defrosting system 500, and the evaporator defrosting device 10 in any of the above embodiments, the box 300 has a refrigerating chamber 310 and a freezing chamber 320, an evaporator of the refrigeration cycle system 400 is disposed near the freezing chamber 320, the freezing chamber 320 is communicated with the refrigerating chamber 310, the acquisition module 100 is disposed in the box 300, an input end of the acquisition module 100 respectively acquires an inductive capacitance value on the evaporator and a refrigerating time of the refrigerating chamber 310, an output end of the acquisition module 100 is connected with an input end of the processing module 200, an output end of the processing module 200 is connected with the defrosting system 500, the defrosting system 500 is disposed near the evaporator of the refrigeration cycle system 400, and the processing module 200 is used for controlling the opening and closing of the defrosting system 500.

In this embodiment, the acquisition module 100 transmits the acquired sensing capacitance value and the refrigerating time of the refrigerating chamber 310 to the processing module 200, the evaporator of the refrigeration cycle system 400 is a freezing evaporator, the acquisition module 100 acquires a sensing capacitance value on the freezing evaporator and the refrigerating time of the refrigerating chamber 310, the processing module 200 determines whether a frost layer on the evaporator reaches a specified thickness according to the sensing capacitance value on the evaporator, the processing module 200 determines whether the thickness of the frost layer on the evaporator decreases the refrigerating efficiency according to the detection result of the refrigerating time of the refrigerating chamber 310 and the first preset time, when the refrigerating time of the refrigerating chamber 310 matches the first preset time, the defrosting cut-in time is the moment, the processing module 200 sends a defrosting instruction to the defrosting system 500, so that the defrosting system 500 is turned on when the frost layer has an influence on the refrigerating effect, thereby improving the accuracy of the defrost cut-in time.

In one embodiment, only one evaporator of the refrigeration cycle system 400 is a freezing evaporator, the freezing evaporator is disposed near the freezing compartment 320, the freezing compartment 320 is communicated with the refrigerating compartment 310 through an air supply channel, air in the compartment is forced to circulate through the air supply system, so that cold air in the freezing compartment 320 is sent into the refrigerating compartment 310 through the air supply channel, and therefore cold energy in the freezing compartment 320 is sent into the refrigerating compartment 310, and refrigeration of each compartment is achieved.

In one embodiment, the processing module 200 is located outside the box 300, the acquisition module 100 is wirelessly connected with the processing module 200, the processing module 200 is wirelessly connected with the defrosting system 500, the processing module 200 is prevented from being located inside a refrigerator, and the influence of generated heat on the temperature of the cold storage chamber 310 or the temperature of the freezing chamber 320 during the operation of the processing module 200 is reduced.

In one embodiment, a computer device is provided, which may be a terminal, and its internal structure diagram may be as shown in fig. 4. The computer device includes a processor, a memory, a communication interface, a display screen, and an input device connected by a system bus. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device comprises a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of an operating system and computer programs in the non-volatile storage medium. The communication interface of the computer device is used for carrying out wired or wireless communication with an external terminal, and the wireless communication can be realized through WIFI, an operator network, NFC (near field communication) or other technologies. The computer program is executed by a processor to implement an evaporator defrosting method. The display screen of the computer equipment can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer equipment can be a touch layer covered on the display screen, a key, a track ball or a touch pad arranged on the shell of the computer equipment, an external keyboard, a touch pad or a mouse and the like.

Those skilled in the art will appreciate that the architecture shown in fig. 4 is merely a block diagram of some of the structures associated with the disclosed aspects and is not intended to limit the computing devices to which the disclosed aspects apply, as particular computing devices may include more or less components than those shown, or may combine certain components, or have a different arrangement of components.

In one embodiment, a computer device is further provided, which includes a memory and a processor, the memory stores a computer program, and the processor implements the steps of the above method embodiments when executing the computer program.

In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the above-mentioned method embodiments.

It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, storage, database or other medium used in the embodiments provided herein can include at least one of non-volatile and volatile memory. Non-volatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical storage, or the like. Volatile Memory can include Random Access Memory (RAM) or external cache Memory. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM), among others.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A method of defrosting an evaporator, comprising:

detecting whether the induction capacitance value is matched with a preset capacitance value or not, and detecting whether the refrigerating time of the refrigerating chamber is matched with a first preset time or not; the first preset time is the refrigerating time of the refrigerating chamber when the frost thickness on the evaporator reaches the point of influencing the refrigerating effect;

when the induction capacitance value is matched with the preset capacitance value and the refrigerating time of the refrigerating chamber is matched with the first preset time, starting a defrosting system to defrost the evaporator; the preset capacitance value is a capacitance value corresponding to the thickness of a frost layer which is formed on the evaporator and is enough to influence the refrigeration effect under different external environment parameters.

2. The method of defrosting an evaporator of claim 1, wherein the obtaining of the capacitance value induced on the evaporator and the refrigeration time of the refrigeration compartment is preceded by:

acquiring external environment parameters;

and acquiring the preset capacitance value according to the external environment parameter.

3. The evaporator defrosting method of claim 2, wherein the obtaining the preset capacitance value according to the external environment parameter comprises:

obtaining the thickness of a frost layer according to the external environment parameters;

and acquiring the corresponding preset capacitance value according to the thickness of the frost layer.

4. The evaporator defrosting method of claim 2 wherein the external environmental parameters include an ambient temperature parameter and an ambient humidity parameter.

5. The evaporator defrosting method of any one of claims 1 to 4, wherein the detecting whether the sensing capacitance value matches a preset capacitance value comprises:

and detecting whether the induction capacitance value is larger than or equal to the preset capacitance value.

6. The evaporator defrosting method according to any one of claims 1 to 4, wherein after detecting whether the sensing capacitance value matches a preset capacitance value, the method further comprises:

when the induction capacitance value is not matched with the preset capacitance value, the refrigerating time and the temperature of the refrigerating chamber are obtained;

detecting whether the temperature of the freezing chamber is matched with a preset temperature or not;

when the temperature of the freezing chamber is matched with the preset temperature, detecting whether the refrigerating time of the freezing chamber is matched with second preset time;

and when the refrigerating time of the freezing chamber is matched with the second preset time, starting a defrosting system to defrost the evaporator.

7. The evaporator defrosting method of claim 6 further comprising:

when the temperature of freezing room with when presetting the temperature and not matching, it is repeated acquire the induction capacitance value on the evaporimeter and the refrigeration time of cold-stored room, detect whether induction capacitance value matches with presetting the capacitance value and detect the refrigeration time of cold-stored room and the first step of presetting time and matching.

8. The evaporator defrosting method of claim 6 further comprising:

when the refrigerating time of the freezing chamber is not matched with the second preset time, the steps of obtaining the induction capacitance value on the evaporator and the refrigerating time of the refrigerating chamber, detecting whether the induction capacitance value is matched with the preset capacitance value and detecting whether the refrigerating time of the refrigerating chamber is matched with the first preset time are repeated.

9. An evaporator defrosting apparatus characterized in that said apparatus comprises:

the processing module is used for detecting whether the induced capacitance value is matched with a preset capacitance value or not; the first preset time is the refrigerating time of the refrigerating chamber when the frost thickness on the evaporator reaches the point of influencing the refrigerating effect; when the induction capacitance value is matched with the preset capacitance value, detecting whether the refrigerating time of the refrigerating chamber is matched with a first preset time; when the refrigerating time of the refrigerating chamber is matched with the first preset time, starting a defrosting system to defrost the evaporator; the preset capacitance value is a capacitance value corresponding to the thickness of a frost layer which is formed on the evaporator and is enough to influence the refrigeration effect under different external environment parameters.

10. A refrigerator, characterized by, including box, refrigeration cycle system, defrost system and the evaporimeter defroster of claim 9, the box has cold-stored room and freezing room, refrigeration cycle system's evaporimeter is close to the setting of freezing room, freezing room with cold-stored room intercommunication, collection module sets up in the box, collection module's input gathers the sensing capacitance value on the evaporimeter and the refrigeration time of cold-stored room respectively, collection module's output with processing module's input is connected, processing module's output with defrost system connects, defrost system is close to refrigeration cycle system's evaporimeter setting, processing module is used for controlling defrost system's opening and closing.

11. A computer device comprising a memory and a processor, the memory storing a computer program, characterized in that the processor, when executing the computer program, implements the steps of the method of any of claims 1 to 8.

12. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method of any one of claims 1 to 8.