CN115200289A

CN115200289A - Refrigerator and electromagnetic valve control method

Info

Publication number: CN115200289A
Application number: CN202210713703.3A
Authority: CN
Inventors: 侯同尧; 李秀军; 赵强; 张善房
Original assignee: Hisense Shandong Refrigerator Co Ltd
Current assignee: Hisense Shandong Refrigerator Co Ltd
Priority date: 2022-06-22
Filing date: 2022-06-22
Publication date: 2022-10-18

Abstract

The embodiment of the application provides a refrigerator and a solenoid valve control method, wherein the temperature of a refrigerating chamber and the temperature of a freezing chamber detected by a temperature detection module are obtained; and if the temperature of the refrigerating chamber is judged to be greater than or equal to the preset refrigerating temperature, generating a refrigerating and refrigerating instruction, and sending the refrigerating and refrigerating instruction to the electromagnetic valve control module. The application provides a refrigerator and a solenoid valve control method, under the condition that a solenoid valve device is not replaced, a power supply control circuit of a solenoid valve is provided, and under the condition that the power supply current of the solenoid valve is direct current, positive and negative pulses are generated by controlling a pulse signal of the power supply control circuit, so that the refrigerating process of a refrigerating chamber and a freezing chamber is realized, the electric energy loss is reduced, and the power supply efficiency is improved.

Description

Refrigerator and electromagnetic valve control method

Technical Field

The embodiment of the application relates to the technical field of refrigerators. And more particularly, to a refrigerator and a solenoid valve control method.

Background

With the continuous development of the refrigeration technology of the refrigerator, the refrigerator is also developed into a multi-temperature multi-control refrigerator from single control. The refrigeration temperatures of the refrigerating chamber and the freezing chamber are respectively controlled by installing electromagnetic valves for controlling the flow direction of the refrigerant in the multi-temperature multi-control refrigerator so as to meet the storage requirements of different foods.

In the prior art, a pulse electromagnetic valve is usually adopted to control an electromagnetic valve of a refrigerant flow direction so as to realize multi-temperature refrigeration of a refrigerator. After passing through the filter, the refrigerant enters a three-way pulse electromagnetic valve. The controller of the refrigerator controls the conduction process of the port 1 of the electromagnetic valve, the port 2 of the electromagnetic valve and the port 3 of the electromagnetic valve by controlling the voltage loaded on the control end A and the control end B of the electromagnetic valve. Specifically, when the refrigerant enters from the port 1 of the electromagnetic valve and exits from the port 2 of the electromagnetic valve, the refrigerant flows into the refrigeration evaporator to realize refrigeration of the refrigeration chamber, and when the refrigerant enters from the port 1 of the electromagnetic valve and exits from the port 3 of the electromagnetic valve, the refrigerant flows into the refrigeration evaporator to realize refrigeration of the refrigeration chamber.

At present, in order to achieve the purpose of saving energy, a solar power supply or a storage battery is used for supplying power to the refrigerator. In order to realize the control process of the pulse electromagnetic valve, the direct current obtained by solar energy or a storage battery is generally converted into alternating current to supply power to the refrigerator. However, in the process of converting the direct current into the alternating current, the problem of power loss exists, and the power supply efficiency is affected.

Disclosure of Invention

The exemplary embodiment of the present application provides a refrigerator and a solenoid valve control method, in which a pulse signal of a power supply control circuit is controlled to generate positive and negative pulses when a power supply current of a solenoid valve is a direct current, so that power consumption is reduced and power supply efficiency is improved in a refrigeration process of a cold storage chamber and a freezing chamber.

In a first aspect, an embodiment of the present application provides a refrigerator, including:

the refrigerator comprises a box body, a refrigerating chamber and a freezing chamber are arranged in the box body;

the refrigerating system is arranged in the box body and comprises a compressor, an electromagnetic valve, a refrigerating evaporator, a freezing evaporator, a filter and a condensing pipe; the solenoid valve comprises an inlet valve, a first outlet valve and a second outlet valve, the inlet valve of the solenoid valve is connected with the outlet of the filter, the first outlet valve of the solenoid valve is connected with the inlet of the refrigerating evaporator, the second outlet valve of the solenoid valve is connected with the inlet of the freezing evaporator, and the solenoid valve further comprises a first level end and a second level end;

the temperature detection module is used for detecting the temperature of the refrigerating chamber and the temperature of the freezing chamber;

the control module comprises a controller and an electromagnetic valve control module, the controller is respectively connected with the electromagnetic valve control module and the temperature detection module, and the electromagnetic valve control module is respectively connected with a first level end and a second level end of the electromagnetic valve;

the controller configured to:

acquiring the temperature of the refrigerating chamber and the temperature of the freezing chamber detected by the temperature detection module;

if the refrigerating room temperature is judged to be greater than or equal to the preset refrigerating temperature, generating a refrigerating and refrigerating instruction, and sending the refrigerating and refrigerating instruction to the electromagnetic valve control module, so that the electromagnetic valve control module outputs a negative level to the first level end and outputs a positive level to the second level end, and the first outlet valve is communicated with the refrigerating evaporator;

and if the temperature of the freezing compartment is judged to be greater than or equal to the preset freezing temperature, generating a freezing and refrigerating instruction, sending the freezing and refrigerating instruction to the electromagnetic valve control module, and outputting a negative level to the second level end and a positive level to the first level end by the electromagnetic valve control module so that the second outlet valve is communicated with the freezing evaporator.

In one possible design, the temperature detection module is further configured to detect a refrigerating evaporator temperature and a freezing evaporator temperature.

In one possible design, the refrigeration instruction comprises a refrigeration pulse signal;

the controller is configured to, after the acquiring of the refrigerating compartment temperature and the freezing compartment temperature detected by the temperature detection module is performed, further:

acquiring the initial temperature of the refrigeration evaporator detected by the temperature detection module;

correspondingly, after executing the generating of the refrigerating and cooling instruction and sending the refrigerating and cooling instruction to the electromagnetic valve control module, the controller is further configured to:

acquiring the refrigeration temperature of the refrigeration evaporator detected by the temperature detection module, and determining the temperature difference value of the refrigeration evaporator according to the initial temperature of the refrigeration evaporator and the refrigeration temperature of the refrigeration evaporator;

if the temperature difference value of the refrigeration evaporator is smaller than a preset refrigeration difference value, determining a new refrigeration pulse signal according to a preset conduction time interval and a pre-stored refrigeration pulse signal, wherein the pre-stored refrigeration pulse signal is a refrigeration pulse signal contained in a previous refrigeration instruction;

and generating a new refrigerating and refrigerating instruction according to the new refrigerating pulse signal, and sending the new refrigerating and refrigerating instruction to the electromagnetic valve control module.

In one possible design, the pre-stored refrigeration pulse signal comprises at least one pre-stored conduction time interval;

the controller is configured, when executing the determining of the new refrigeration pulse signal according to the preset on-time interval and the pre-stored refrigeration pulse signal, to specifically:

generating a new conduction time interval according to the sum of the pre-stored conduction time interval and the preset conduction time interval, and generating a new refrigeration pulse signal according to the number of the pre-stored conduction time intervals contained in the pre-stored refrigeration pulse signal and the new conduction time interval;

or,

generating a new refrigerating pulse signal according to the number of the pre-stored conduction time intervals and the sum of the preset number of the pre-stored refrigerating pulse signals and the number of the pre-stored conduction time intervals;

or generating a new conduction time interval according to the sum of the pre-stored conduction time intervals and the preset conduction time intervals, generating the number of new conduction time intervals according to the sum of the pre-stored conduction time intervals and the preset number included in the pre-stored refrigeration pulse signal, and generating a new refrigeration pulse signal according to the number of the new conduction time intervals and the new conduction time intervals.

In one possible design, the freezing refrigeration instruction comprises a freezing pulse signal;

correspondingly, after executing the freezing and refrigerating instruction, and sending the freezing and refrigerating instruction to the solenoid valve control module, the solenoid valve control module is further configured to:

acquiring the refrigeration temperature of the refrigeration evaporator detected by the temperature detection module, and determining the temperature difference of the refrigeration evaporator according to the initial temperature of the refrigeration evaporator and the refrigeration temperature of the refrigeration evaporator;

if the temperature difference value of the freezing evaporator is smaller than a preset freezing difference value, determining a new freezing pulse signal according to a preset conduction time interval and a pre-stored freezing pulse signal, wherein the pre-stored freezing pulse signal is a freezing pulse signal contained in the last freezing refrigeration instruction;

and generating a new freezing and refrigerating instruction according to the new freezing pulse signal, and sending the new freezing and refrigerating instruction to the electromagnetic valve control module.

In one possible embodiment, the pre-stored freeze pulse signal comprises at least one pre-stored on-time interval;

the controller is configured, when performing the determining of the new freeze pulse signal from the preset on-time interval and the pre-stored freeze pulse signal, in particular to:

generating a new conduction time interval according to the sum of the pre-stored conduction time interval and the preset conduction time interval, and generating a new freezing pulse signal according to the number of the pre-stored conduction time intervals contained in the pre-stored freezing pulse signal and the new conduction time interval;

or,

generating a new number of conduction time intervals according to the number of the pre-stored conduction time intervals and the sum of the preset number of the pre-stored freezing pulse signals, and generating new freezing pulse signals according to the new number of the conduction time intervals and the pre-stored conduction time intervals;

or generating a new conduction time interval according to the sum of the pre-stored conduction time intervals and the preset conduction time intervals, generating the number of new conduction time intervals according to the sum of the pre-stored conduction time intervals and the preset number included in the pre-stored refrigeration pulse signal, and generating a new refrigeration pulse signal according to the number of new conduction time intervals and the new conduction time intervals.

In one possible design, the controller is configured to, after executing the sending of the refrigeration cooling command to the solenoid valve control module, further:

after a preset time period, acquiring the refrigeration ending temperature of the refrigeration evaporator detected by the temperature detection module;

if the refrigeration finishing temperature of the refrigeration evaporator is higher than a first preset refrigeration temperature parameter, repeatedly executing the step of generating a refrigeration instruction, and sending the refrigeration instruction to the electromagnetic valve control module;

the controller is configured to, after executing the sending of the freezing and refrigerating instruction to the solenoid valve control module, further:

and if the refrigeration ending temperature of the refrigeration evaporator is higher than a first preset refrigeration temperature parameter, repeatedly executing the step of generating a refrigeration instruction, and sending the refrigeration instruction to the electromagnetic valve control module.

In one possible design, the solenoid valve control module includes a refrigeration signal conversion module, a freezing signal conversion module, a refrigeration switch module, and a freezing switch module;

the controller is configured to, when executing the sending of the refrigeration and cooling instruction to the solenoid valve control module, specifically:

sending the refrigerating and refrigerating instruction to a refrigerating signal conversion module to enable the refrigerating signal conversion module to control the refrigerating switch module to be opened and output a negative level to the first level end and a positive level to the second level end, so that the first outlet valve is communicated with the refrigerating evaporator;

accordingly, the controller is configured, when executing the sending of the freezing and refrigerating instruction to the solenoid valve control module, to specifically:

and sending the freezing refrigeration instruction to a freezing signal conversion module so that the freezing signal conversion module controls the freezing switch module to be switched on and output a negative level to the second level end and a positive level to the first level end, and the second outlet valve is connected with the freezing evaporator.

In one possible embodiment, the cold storage switching module comprises a first switching tube and a second switching tube, and the freezer switching module comprises a third switching tube and a fourth switching tube.

In a second aspect, the controller is applied to a controller in a control module of a refrigerator, the refrigerator further includes a box body, a refrigeration system and a temperature detection module, wherein a cold storage chamber and a freezing chamber are arranged in the box body, the refrigeration system is arranged in the box body, the refrigeration system includes a compressor, an electromagnetic valve, a cold storage evaporator, a freezing evaporator, a filter and a condenser pipe, the electromagnetic valve includes an inlet valve, a first outlet valve and a second outlet valve, the inlet valve of the electromagnetic valve is connected with the outlet of the filter, the first outlet valve of the electromagnetic valve is connected with the inlet of the cold storage evaporator, the second outlet valve of the electromagnetic valve is connected with the inlet of the freezing evaporator, and the electromagnetic valve further includes a first level end and a second level end; the temperature detection module is used for detecting the temperature of the refrigerating chamber and the temperature of the freezing chamber; the control module also comprises an electromagnetic valve control module, the controller is respectively connected with the electromagnetic valve control module and the temperature detection module, and the electromagnetic valve control module is respectively connected with a first level end and a second level end of the electromagnetic valve;

the method comprises the following steps:

and if the temperature of the freezing room is judged to be greater than or equal to the preset freezing temperature, generating a freezing and refrigerating instruction, sending the freezing and refrigerating instruction to the electromagnetic valve control module, and outputting a negative level to the second level end and a positive level to the first level end by the electromagnetic valve control module so that the second outlet valve is communicated with the freezing evaporator.

According to the refrigerator and the electromagnetic valve control method provided by the embodiment of the application, the refrigerating chamber temperature and the freezing chamber temperature detected by the temperature detection module are obtained; and if the temperature of the refrigerating chamber is judged to be greater than or equal to the preset refrigerating temperature, generating a refrigerating and refrigerating instruction, and sending the refrigerating and refrigerating instruction to the electromagnetic valve control module. The application provides a refrigerator and a solenoid valve control method, under the condition that a solenoid valve device is not replaced, a power supply control circuit of a solenoid valve is provided, and under the condition that the power supply current of the solenoid valve is direct current, positive and negative pulses are generated by controlling a pulse signal of the power supply control circuit, so that the refrigerating process of a refrigerating chamber and a freezing chamber is realized, the electric energy loss is reduced, and the power supply efficiency is improved.

Drawings

In order to more clearly illustrate the embodiments of the present application or the implementation manner in the related art, the drawings used in the description of the embodiments or the related art will be briefly described below, and it is obvious that the drawings in the description below are some embodiments of the present application, and other drawings can be obtained by those skilled in the art according to these drawings.

FIG. 1 is a schematic structural diagram of a three-way pulse solenoid valve according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a refrigerator according to an embodiment of the present invention;

FIG. 3 is a first flowchart illustrating a solenoid valve control method according to an embodiment of the present invention;

FIG. 4 is a first schematic diagram of a solenoid control circuit according to an embodiment of the present invention;

FIG. 5 is a second schematic diagram of a solenoid control circuit according to an embodiment of the present invention;

FIG. 6 is a second flowchart illustrating a solenoid valve control method according to an embodiment of the present invention;

FIG. 7 is a third schematic flowchart of a solenoid valve control method according to an embodiment of the present invention;

FIG. 8 is a fourth schematic flowchart of a solenoid valve control method according to an embodiment of the present invention;

fig. 9 is a schematic structural diagram of a solenoid valve control device according to an embodiment of the present invention;

fig. 10 is a schematic structural diagram of a controller according to an embodiment of the present invention.

Detailed Description

To make the objects, embodiments and advantages of the present application clearer, the following is a clear and complete description of exemplary embodiments of the present application with reference to the attached drawings in exemplary embodiments of the present application, and it is apparent that the exemplary embodiments described are only a part of the embodiments of the present application, and not all of the embodiments.

All other embodiments, which can be derived by a person skilled in the art from the exemplary embodiments described herein without making any inventive step, are intended to be within the scope of the claims appended hereto. In addition, while the disclosure herein has been presented in terms of one or more exemplary examples, it should be appreciated that aspects of the disclosure may be implemented solely as a complete embodiment.

It should be noted that the brief descriptions of the terms in the present application are only for the convenience of understanding the embodiments described below, and are not intended to limit the embodiments of the present application. These terms should be understood in their ordinary and customary meaning unless otherwise indicated.

The terms "first", "second", "third", and the like in the description and claims of this application and in the above-described drawings are used for distinguishing between similar or analogous objects or entities and are not necessarily meant to define a particular order or sequence Unless otherwise indicated. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein.

Furthermore, the terms "comprises" and "comprising," as well as any variations thereof, are intended to cover a non-exclusive inclusion, such that a product or device that comprises a list of elements is not necessarily limited to those elements explicitly listed, but may include other elements not expressly listed or inherent to such product or device.

The term "module" as used herein refers to any known or later developed hardware, software, firmware, artificial intelligence, fuzzy logic, or combination of hardware and/or software code that is capable of performing the functionality associated with that element.

In the prior art, a multi-temperature multi-control refrigerator generally adopts a pulse electromagnetic valve to control an electromagnetic valve of a refrigerant flow direction. Fig. 1 is a schematic structural diagram of a three-way pulse solenoid valve according to an embodiment of the present invention. As shown in fig. 1, a and B are level control ends of the solenoid valve, respectively, a port 1 of the solenoid valve is an inlet end of the solenoid valve, a port 2 of the solenoid valve is a refrigeration evaporator access port of the solenoid valve, and a port 3 of the solenoid valve is a refrigeration evaporator access port of the solenoid valve. After passing through the filter, the refrigerant enters the three-way pulse electromagnetic valve through the port 1 of the electromagnetic valve. The controller of the refrigerator controls the conducting process of the opening of the electromagnetic valve 1, the opening of the electromagnetic valve 2 and the opening of the electromagnetic valve 3 by controlling the voltage loaded on the control end A and the control end B of the electromagnetic valve. Specifically, when the refrigerant enters from the port 1 of the electromagnetic valve and exits from the port 2 of the electromagnetic valve, the refrigerant flows into the refrigeration evaporator to realize refrigeration of the refrigeration chamber, and when the refrigerant enters from the port 1 of the electromagnetic valve and exits from the port 3 of the electromagnetic valve, the refrigerant flows into the refrigeration evaporator to realize refrigeration of the refrigeration chamber. However, when the refrigerator is powered by the solar power supply or the storage battery, the direct current obtained by the solar power supply or the storage battery needs to be converted into the alternating current to supply power to the refrigerator, and in the process of converting the direct current into the alternating current by inversion, the problem of electric energy loss occurs, and the power supply efficiency is affected.

In order to solve the problem of electric energy loss in the process of inverting the direct current supply current of the electromagnetic valve into alternating current in the prior art, the application provides the refrigerator and the electromagnetic valve control method.

Fig. 2 is a schematic structural diagram of a refrigerator according to an embodiment of the present invention. As shown in fig. 2, a refrigeration system is disposed in the refrigerator body, wherein the refrigeration system includes a compressor 201, a solenoid valve 202, a refrigeration evaporator 203, a freezing evaporator 204, a filter 205, and a condenser 206, the solenoid valve 202 includes an inlet valve 2021, a first outlet valve 2022, and a second outlet valve 2023, the inlet valve 2021 of the solenoid valve is connected to an outlet of the filter 205, the first outlet valve 2022 of the solenoid valve is connected to an inlet of the refrigeration evaporator 203, the second outlet valve 2023 of the solenoid valve is connected to an inlet of the freezing evaporator 204, and the solenoid valve further includes a first level end 2024 and a second level end 2025. The refrigerator also comprises a temperature detection module 207 for detecting the temperature of the refrigerating chamber and the temperature of the freezing chamber; the refrigerator further comprises a control module 208, the control module 208 comprises a controller 2081 and a solenoid valve control module 2082, the controller 2081 is connected with the solenoid valve control module 2082 and the temperature detection module 207, respectively, and the solenoid valve control module 2082 is connected with the first level end 2024 and the second level end 2025 of the solenoid valve, respectively.

The technical solution of the present application will be described in detail below with specific examples. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments.

Fig. 3 is a schematic flow chart of a method for controlling an electromagnetic valve according to an embodiment of the present invention, where an execution main body of the embodiment may be the controller in the embodiment shown in fig. 3. As shown in fig. 3, the method includes:

s301: and acquiring the temperature of the refrigerating chamber and the temperature of the freezing chamber detected by the temperature detection module.

In the embodiment of the invention, in the refrigerating cycle process of the refrigerating system of the refrigerator, an accumulator is also arranged between the refrigerating evaporator and the freezing evaporator group and the compressor and is used for storing liquid refrigerant. In the refrigeration system, a compressor converts a refrigerant into a high-temperature high-pressure liquid refrigerant, the high-temperature high-pressure liquid refrigerant is subjected to heat exchange through a condenser and is converted into a normal-temperature high-pressure liquid refrigerant, impurities in the refrigerant are filtered out of a filter, the conduction condition of an electromagnetic valve is controlled by controlling the level loaded on the control end of the electromagnetic valve, and when the electromagnetic valve is controlled to be conducted with a refrigeration evaporator, the refrigerant flows into the refrigeration evaporator to refrigerate a refrigeration chamber. When the control electromagnetic valve is communicated with the freezing evaporator, the refrigerant flows into the freezing evaporator to refrigerate the freezing chamber. The electromagnetic valve is in one-way conduction, and only the electromagnetic valve can be controlled to be conducted with the freezing evaporator or only the electromagnetic valve can be controlled to be conducted with the refrigerating evaporator at the same time.

In an embodiment of the present invention, the temperature detection module includes a first temperature sensor and a second temperature sensor, the first temperature sensor is used for measuring the temperature of the refrigerating compartment, and the second temperature sensor is used for measuring the temperature of the freezing compartment. Illustratively, the temperature sensor is an infrared temperature sensor. In the refrigerating process of the refrigerator, the refrigerating effect of the refrigerator can be monitored by monitoring the temperature of the refrigerating chamber and the temperature of the freezing chamber.

S302: and if the temperature of the refrigerating chamber is judged to be greater than or equal to the preset refrigerating temperature, generating a refrigerating and refrigerating instruction, and sending the refrigerating and refrigerating instruction to the electromagnetic valve control module, so that the electromagnetic valve control module outputs a negative level to the first level end and outputs a positive level to the second level end, and the first outlet valve is communicated with the refrigerating evaporator.

In the refrigeration process of the refrigerator, when new food is stored in the refrigerating chamber to cause the temperature of the refrigerating chamber to rise, in order to ensure the refrigerating and storing effect of the food, the refrigerating evaporator needs to be controlled to refrigerate the refrigerating chamber. Specifically, the preset refrigeration temperature is 4 ℃, and if the refrigeration compartment temperature is judged to be greater than or equal to 4 ℃, a refrigeration instruction is generated to control the storage evaporator to refrigerate the refrigeration compartment.

For example, fig. 4 is a first schematic diagram of a solenoid valve control circuit provided in an embodiment of the present invention. As shown in fig. 4, the solenoid valve control module includes a refrigerating signal conversion module 401, a freezing signal conversion module 402, a refrigerating switch module 403, and a freezing switch module 404, and illustratively, the refrigerating switch module 403 includes a first switch tube 4031 and a second switch tube 4032, and the freezing switch module 404 includes a third switch tube 4041 and a fourth switch tube 4042. The refrigerating signal conversion module 401 and the freezing signal conversion module 402 are respectively connected to the controller, the first switch tube 4031 and the second switch tube 4032 control the on/off of the switch tubes according to the refrigerating pulse signal sent by the refrigerating signal conversion module 401, and the third switch tube 4041 and the fourth switch tube 4042 control the on/off of the switch tubes according to the freezing pulse signal sent by the freezing signal conversion module 402.

In the embodiment of the invention, when the refrigerating chamber is judged to need to be refrigerated, namely when the temperature of the refrigerating chamber is judged to be greater than or equal to the preset refrigerating temperature, the generated refrigerating and refrigerating instruction is sent to the refrigerating signal conversion module of the electromagnetic valve control module, and after the refrigerating signal conversion module receives the refrigerating and refrigerating instruction, the control process of the electromagnetic valve is started. Specifically, the refrigeration signal conversion module converts the received signal into a voltage loaded on the first switching tube, the second switching tube, the third switching tube and the fourth switching tube, so that the first switching tube and the second switching tube are switched on, the third switching tube and the fourth switching tube are switched off, and the voltage loaded on the first level end is a negative level and the voltage loaded on the second level end is a positive level. At this time, the first outlet valve of the electromagnetic valve is connected with the refrigerating evaporator, namely, the refrigerant flows into the refrigerating evaporator through the electromagnetic valve to refrigerate the refrigerating chamber.

Fig. 5 is a schematic diagram of a second control circuit of the solenoid valve according to the embodiment of the present invention. As shown in fig. 5, N1 is a controller, N2 is a refrigerating signal conversion module, and N3 is a freezing signal conversion module. The electromagnetic valve is a pulse electromagnetic valve. Illustratively, the supply voltage is 300V dc. When the controller determines that refrigeration of the refrigeration chamber is required according to the measured temperature of the refrigeration chamber, a refrigeration pulse signal is output, wherein the conduction time of the refrigeration pulse signal is a pre-stored conduction time interval, and the exemplary pre-stored conduction time interval is 3 milliseconds. Specifically, the controller sets the pin 25 and the pin 26 to be at a high level for 3 milliseconds, at this time, the on time of the first switching tube is 3 milliseconds, the third switching tube is turned off, and simultaneously sets the pin 23 and the pin 24 to be at a low level for 3 milliseconds, so that the fourth switching tube is turned off, and the second switching tube is turned on for 3 milliseconds. At this time, a negative voltage is applied to the first level terminal for a duration of 3 msec, and a positive voltage is applied to the second level terminal for a duration of 3 msec. Then, the

pins

23 and 25 are set to be at a low level for 17 milliseconds, and the

pins

26 and 24 are simultaneously set to be at a high level for 17 milliseconds, so that the first switch tube, the second switch tube, the third switch tube and the fourth switch tube are all turned off, and at this time, no voltage is applied to the second level end and the first level end.

S303: and if the temperature of the freezing chamber is judged to be greater than or equal to the preset freezing temperature, generating a freezing and refrigerating instruction, sending the freezing and refrigerating instruction to the electromagnetic valve control module, outputting a negative level to the second level end and outputting a positive level to the first level end by the electromagnetic valve control module, and enabling the second outlet valve to be communicated with the freezing evaporator.

In the refrigeration process of the refrigerator, when it is determined that the refrigeration chamber does not need to be refrigerated, if new food is stored in the freezing chamber, the temperature of the freezing chamber rises, and in order to ensure the freezing storage effect of the food, the freezing evaporator needs to be controlled to refrigerate the freezing chamber. Specifically, the preset freezing temperature is minus 5 ℃, and if the freezing chamber temperature is judged to be greater than or equal to minus 5 ℃, a freezing and refrigerating instruction is generated to control the evaporator to refrigerate the freezing chamber.

On the basis of the electromagnetic valve control circuit diagram provided in fig. 4, when it is determined that the refrigeration of the freezing chamber is required, that is, when it is determined that the temperature of the freezing chamber is greater than or equal to the preset freezing temperature, the generated freezing refrigeration instruction is sent to the freezing signal conversion module of the electromagnetic valve control module, and after the freezing signal conversion module receives the freezing refrigeration instruction, the control process of the electromagnetic valve is started. Specifically, the freezing signal conversion module converts the received signal into voltages loaded on a first switching tube, a second switching tube, a third switching tube and a fourth switching tube, so that the first switching tube and the second switching tube are turned off, the third switching tube and the fourth switching tube are turned on, and the voltage loaded on the first level end is a positive level and the voltage loaded on the second level end is a negative level. At this time, the first outlet valve of the electromagnetic valve is connected to the refrigeration evaporator, that is, the refrigerant flows into the refrigeration evaporator through the electromagnetic valve, and cools the refrigeration compartment.

On the basis of the electromagnetic valve control circuit diagram provided in fig. 5, when the controller determines that the freezing compartment needs to be cooled according to the measured freezing compartment temperature, a freezing pulse signal is output, and the on-time of the low freezing pulse signal is a pre-stored on-time interval, and an exemplary pre-stored on-time interval is 3 milliseconds. Specifically, the controller sets the pin 25 and the pin 26 to be at a low level for 3 milliseconds, at this time, the off time of the first switch tube is 3 milliseconds, the third switch tube is turned on, and simultaneously, the pin 23 and the pin 24 are set to be at a high level for 3 milliseconds, so that the fourth switch tube is turned on, and the off time of the second switch tube is 3 milliseconds. At this time, the second level terminal is applied with a negative voltage for 3 msec, and the first level terminal is applied with a positive voltage for 3 msec. Then, the

pins

23 and 25 are set to be at a low level for 17 milliseconds, and the

pins

According to the electromagnetic valve control method provided by the embodiment, under the condition that an electromagnetic valve device of the refrigeration system is not replaced, the power supply control circuit of the electromagnetic valve is provided, and under the condition that the power supply current of the electromagnetic valve is direct current, the pulse signal of the power supply control circuit is controlled to generate positive and negative pulses, so that the refrigeration processes of the refrigeration chamber and the freezing chamber are controlled, the electric energy loss is reduced, and the power supply efficiency is improved.

Fig. 6 is a schematic flow chart illustrating a solenoid valve control method according to an embodiment of the present invention. In the embodiment of the present invention, on the basis of the embodiment provided in fig. 3, the temperature detection module is further configured to detect the temperature of the refrigeration evaporator and the temperature of the freezing evaporator. In order to ensure the refrigeration effect, the embodiment of the invention provides a method for controlling a repeatedly-executed electromagnetic valve, which comprises the following specific steps:

s601: and acquiring the temperature of the refrigerating chamber and the temperature of the freezing chamber detected by the temperature detection module.

S602: and if the temperature of the refrigerating chamber is judged to be greater than or equal to the preset refrigerating temperature, generating a refrigerating and refrigerating instruction, and sending the refrigerating and refrigerating instruction to the electromagnetic valve control module.

S603: and if the temperature of the freezing chamber is judged to be greater than or equal to the preset freezing temperature, generating a freezing and refrigerating instruction, and sending the freezing and refrigerating instruction to the electromagnetic valve control module.

In the embodiment of the present invention, the methods and effects of S601 to S603 are the same as those of S301 to S303 in the embodiment of fig. 3, and are not described herein again.

S6041: and after a preset time period, acquiring the refrigeration ending temperature of the refrigeration evaporator detected by the temperature detection module.

In the embodiment of the invention, after the refrigerating and refrigerating instruction is sent to the electromagnetic valve control module, the electromagnetic valve control module responds to the refrigerating and refrigerating instruction and outputs the negative level to the first level end and the positive level to the second level end. And if the solenoid valve control module can make the first outlet valve and the refrigerating evaporator communicated in response to a refrigerating and refrigerating instruction, the refrigerating evaporator refrigerates the refrigerating chamber. In the process that the electromagnetic valve control module controls the electromagnetic valve to conduct in response to the refrigerating and refrigerating instruction, in order to avoid the situation that the first outlet valve is not opened due to short conducting time of the refrigerating pulse signal, whether the electromagnetic valve control module conducts or not and whether the refrigerating process is conducted or not can be judged by monitoring the refrigerating temperature of the refrigerating evaporator. For example, the preset time period is set to be 2 minutes, and the refrigeration evaporator temperature detected by the temperature detection module is collected to serve as the refrigeration ending temperature of the refrigeration evaporator in 2 minutes after the refrigeration instruction is sent to the electromagnetic valve control module.

S6042: and after a preset time period, acquiring the refrigeration ending temperature of the refrigeration evaporator detected by the temperature detection module.

In the embodiment of the invention, after the freezing and refrigerating instruction is sent to the electromagnetic valve control module, the electromagnetic valve control module responds to the freezing and refrigerating instruction and outputs a positive level to the first level end and a negative level to the second level end. And if the electromagnetic valve control module can make the second outlet valve and the freezing evaporator communicated in response to the freezing and refrigerating instruction, the freezing evaporator starts to refrigerate the freezing chamber. In the process that the electromagnetic valve control module responds to the freezing and refrigerating instruction to control the electromagnetic valve to conduct, in order to avoid the situation that the first outlet valve is not opened due to short conducting time of the freezing pulse signal, whether the electromagnetic valve control module conducts or not and whether the refrigerating process is carried out or not can be judged by monitoring the refrigerating temperature of the freezing evaporator. Illustratively, the preset time period is set to be 2 minutes, and the freezing evaporator temperature detected by the temperature detection module is collected as the freezing evaporator refrigeration ending temperature 2 minutes after the freezing refrigeration instruction is sent to the solenoid valve control module.

S6051: and if the refrigeration ending temperature of the refrigeration evaporator is higher than the first preset refrigeration temperature parameter, the step of S602 is repeatedly executed.

In the embodiment of the invention, when the first outlet valve is not opened due to the short conduction time of the refrigeration pulse signal, the refrigerant does not flow into the refrigeration evaporator, and the refrigeration end temperature of the refrigeration evaporator is overhigh. In order to ensure the refrigeration effect of the refrigeration evaporator, when the refrigeration ending temperature of the refrigeration evaporator is higher than the first preset refrigeration temperature parameter, the voltage loaded on the electromagnetic valve needs to be controlled again, so that the first outlet valve of the electromagnetic valve is communicated with the refrigeration evaporator. Illustratively, the first predetermined refrigeration chiller temperature parameter is-5 degrees celsius.

S6052: if the refrigeration ending temperature of the refrigeration evaporator is higher than the first preset refrigeration temperature parameter, the step S603 is repeatedly executed.

In the embodiment of the invention, when the second outlet valve is not opened due to the short conduction time of the freezing pulse signal, the refrigerant does not flow into the freezing evaporator, and the refrigeration ending temperature of the freezing evaporator is overhigh. In order to ensure the refrigeration effect of the refrigeration evaporator, when the refrigeration ending temperature of the refrigeration evaporator is higher than the first preset refrigeration temperature parameter, the voltage loaded on the electromagnetic valve needs to be controlled again, so that the second outlet valve of the electromagnetic valve is communicated with the refrigeration evaporator. Illustratively, the first predetermined refrigeration chiller temperature parameter is-10 degrees celsius.

According to the electromagnetic valve control method provided by the embodiment, after the electromagnetic valve is controlled for the preset time period, the conduction condition of the electromagnetic valve is judged by monitoring the refrigerating temperature of the refrigerating evaporator or the freezing evaporator, the phenomenon that the refrigeration effect of the refrigerating evaporator or the freezing evaporator is influenced due to the fact that the electromagnetic valve is not conducted is avoided, and the refrigeration effect of the refrigerator is guaranteed.

Fig. 7 is a third schematic flowchart of a solenoid valve control method according to an embodiment of the present invention. In the embodiment of the present invention, on the basis of the embodiment provided in fig. 3, in order to ensure the refrigeration effect of the refrigerating chamber, an embodiment of the present invention provides a solenoid valve control method for ensuring the refrigeration effect of the refrigerating chamber by adjusting a pulse signal, which includes the following specific steps:

s701: and acquiring the temperature of the refrigerating chamber and the temperature of the freezing chamber detected by the temperature detection module.

S702: the initial temperature of the refrigeration evaporator detected by the temperature detection module is obtained.

In the embodiment of the invention, the temperature detection module can also be used for detecting the temperature of the refrigeration evaporator and the temperature of the freezing evaporator. For example, before the loading voltage of the electromagnetic valve is controlled, the real-time temperature in the refrigeration evaporator is collected by the temperature detection module to be used as the initial temperature of the refrigeration evaporator.

S703: and if the temperature of the refrigerating chamber is judged to be greater than or equal to the preset refrigerating temperature, generating a refrigerating and refrigerating instruction, and sending the refrigerating and refrigerating instruction to the electromagnetic valve control module.

In the embodiment of the present invention, the method and effect of S703 are consistent with those of S302 in the embodiment of fig. 3, and are not described herein again.

S704: the refrigeration temperature of the refrigeration evaporator detected by the temperature detection module is obtained, and the refrigeration evaporator temperature difference value is determined according to the initial temperature of the refrigeration evaporator and the refrigeration temperature of the refrigeration evaporator.

In the embodiment of the invention, in the process of controlling the electromagnetic valve to enable the first outlet valve to be communicated with the refrigeration evaporator, the refrigeration temperature of the refrigeration evaporator detected by the temperature detection module is collected in real time, and the variation of the temperature, namely the temperature difference of the refrigeration evaporator, is determined according to the collected initial temperature of the refrigeration evaporator and the real-time refrigeration temperature of the refrigeration evaporator.

S705: and if the temperature difference value of the refrigeration evaporator is smaller than the preset refrigeration difference value, determining a new refrigeration pulse signal according to the preset conduction time interval and a pre-stored refrigeration pulse signal, wherein the pre-stored refrigeration pulse signal is a refrigeration pulse signal contained in the last refrigeration instruction.

In the embodiment of the present invention, when it is determined that the refrigerating evaporator temperature difference is smaller than the set range, it may be determined that no refrigerant flows into the refrigerating evaporator, that is, the first outlet valve of the solenoid valve is not connected to the freezing evaporator. Specifically, when it is determined that the refrigeration evaporator temperature difference is smaller than the preset refrigeration difference, the conduction time of the solenoid valve needs to be increased, so that the first outlet valve of the solenoid valve and the refrigeration evaporator can be connected.

Illustratively, the pre-existing refrigeration pulse signal comprises at least one pre-existing on-time interval. When it is determined that the conduction time of the refrigeration pulse signal is short, so that the first outlet valve is not opened, a new refrigeration pulse signal can be determined according to a preset conduction time interval and a pre-stored refrigeration pulse signal, and specifically, the pre-stored refrigeration pulse signal is a refrigeration pulse signal included in a previous refrigeration instruction. Illustratively, the pre-store on-time interval is set to 3 milliseconds. When the first outlet valve of the first control electromagnetic valve is connected with the refrigeration evaporator, the conduction time of the refrigeration pulse signal contained in the first refrigeration instruction is 1 preset conduction time interval, namely 3 milliseconds. When the electromagnetic valve is controlled according to a first refrigerating and refrigerating instruction but the first outlet valve of the electromagnetic valve is not connected with the refrigerating evaporator, the conduction time of the refrigerating pulse signal contained in the first refrigerating and refrigerating instruction is set to be the sum of the conduction time of the prestored refrigerating pulse signal and the conduction time of the first refrigerating pulse signal. Illustratively, the pre-stored refrigeration pulse signal is 3 ms, the on-time of the first refrigeration pulse signal is 1 preset on-time interval of 3 ms, and the on-time of the second refrigeration pulse signal is 5 ms. In the embodiment of the invention, the aim of controlling the connection between the first outlet valve of the electromagnetic valve and the refrigeration evaporator can be fulfilled by increasing the conduction time of the refrigeration pulse signal.

For example, a new on-time interval may be generated according to the sum of the pre-stored on-time intervals and the preset on-time intervals, and a new refrigeration pulse signal may be generated according to the number of pre-stored on-time intervals included in the pre-stored refrigeration pulse signal and the new on-time interval. Specifically, the preset on-time interval is 2 milliseconds, the pre-stored on-time interval is 3 milliseconds, and the new on-time interval is 5 milliseconds. Specifically, if the number of the pre-stored refrigeration pulse signals, that is, the number of the pre-stored on-time intervals of the refrigeration pulse signal included in the previous refrigeration instruction is 2, the number of pulses of the new refrigeration pulse signal is 2, and the pulse on-time is 5 milliseconds.

For example, the new refrigerating pulse signal may be generated according to the number of the pre-stored on-time intervals included in the pre-stored refrigerating pulse signal and the sum of the preset number and the new on-time intervals. Illustratively, the preset number is 2, and if the number of the pre-stored on-time intervals included in the pre-stored refrigeration pulse signal, that is, the number of the refrigeration pulse signal included in the previous refrigeration instruction is 1, the number of the new on-time intervals is 3. The number of pulses of the new refrigerating pulse signal is 3 and the pulse on time is the pre-stored on time interval, i.e. 3 ms.

For example, a new on-time interval may be generated according to the pre-stored on-time interval and the sum of the pre-set on-time intervals, and a new on-time interval may be generated according to the number of pre-stored on-time intervals and the sum of the pre-set number included in the pre-stored refrigeration pulse signal, and a new refrigeration pulse signal may be generated according to the new on-time interval and the new on-time interval. Illustratively, the preset on-time interval is 2 milliseconds, the pre-existing on-time interval is 3 milliseconds, and the new on-time interval is 5 milliseconds. Illustratively, the preset number is 2, and if the number of the pre-stored on-time intervals included in the pre-stored refrigeration pulse signal, that is, the number of the refrigeration pulse signal included in the previous refrigeration instruction is 1, the number of the new on-time intervals is 3. The new refrigeration pulse signal has a pulse number of 3 and a pulse on time of 5 milliseconds.

In the embodiment of the invention, in order to avoid the failure of the solenoid valve caused by the overlong conduction time, the pulse number and the pulse conduction time of the refrigeration pulse signal need to be controlled. An exemplary refrigeration pulse signal has a maximum number of pulses of 8, a pulse on time of 9 milliseconds at maximum, and a pulse frequency of 45HZ to 65 HZ.

S706: and generating a new refrigerating and refrigerating instruction according to the new refrigerating pulse signal, and sending the new refrigerating and refrigerating instruction to the electromagnetic valve control module.

According to the electromagnetic valve control method provided by the embodiment, when the temperature variation of the refrigeration evaporator is lower than the preset refrigeration difference value, the situation that the first outlet valve is not opened due to the fact that the conduction time of the refrigeration pulse signal is short is explained, the conduction of the electromagnetic valve is controlled by increasing the conduction time of the refrigeration pulse signal, the refrigeration effect of the refrigeration evaporator is prevented from being influenced due to the fact that the electromagnetic valve is not conducted, and the refrigeration effect of the refrigerator is guaranteed.

Fig. 8 is a schematic flow chart of a solenoid valve control method according to an embodiment of the present invention. In the embodiment of the present invention, on the basis of the embodiment provided in fig. 3, in order to ensure the refrigeration effect of the freezing chamber, the embodiment of the present invention provides a solenoid valve control method for ensuring the refrigeration effect of the freezing chamber by adjusting a pulse signal, which includes the following specific steps:

s801: and acquiring the temperature of the refrigerating chamber and the temperature of the freezing chamber detected by the temperature detection module.

S802: and acquiring the initial temperature of the refrigeration evaporator detected by the temperature detection module.

For example, before the voltage applied to the solenoid valve is controlled, the temperature detection module is used to acquire the real-time temperature in the refrigeration evaporator as the initial temperature of the refrigeration evaporator.

S803: and if the temperature of the freezing chamber is judged to be greater than or equal to the preset freezing temperature, generating a freezing and refrigerating instruction, and sending the freezing and refrigerating instruction to the electromagnetic valve control module.

In the embodiment of the present invention, S803 is identical to the method and effect implemented by S303 in the embodiment of fig. 3, and details are not repeated herein.

S804: the refrigeration temperature of the refrigeration evaporator detected by the temperature detection module is obtained, and the temperature difference value of the refrigeration evaporator is determined according to the initial temperature of the refrigeration evaporator and the refrigeration temperature of the refrigeration evaporator.

In the embodiment of the invention, in the process of controlling the electromagnetic valve to enable the second outlet valve to be communicated with the freezing evaporator, the refrigerating temperature of the freezing evaporator detected by the temperature detection module is collected in real time, and the variation of the temperature, namely the temperature difference of the freezing evaporator, is determined according to the collected initial temperature of the freezing evaporator and the real-time refrigerating temperature of the freezing evaporator.

S805: and if the temperature difference value of the freezing evaporator is smaller than the preset freezing difference value, determining a new freezing pulse signal according to the preset conduction time interval and a pre-stored freezing pulse signal, wherein the pre-stored freezing pulse signal is the freezing pulse signal contained in the last freezing refrigeration instruction.

In the embodiment of the present invention, when it is determined that the refrigeration evaporator temperature difference is smaller than the set range, it may be determined that no refrigerant flows into the refrigeration evaporator currently, that is, the second outlet valve of the electromagnetic valve is not connected to the refrigeration evaporator. Specifically, when it is determined that the refrigeration evaporator temperature difference is smaller than the preset refrigeration difference, the conduction time of the solenoid valve needs to be increased, so that the second outlet valve of the solenoid valve can be connected with the refrigeration evaporator.

Illustratively, the pre-stored freeze pulse signal comprises at least one pre-stored on-time interval. When it is determined that the second outlet valve is not opened due to the short conduction time of the freeze pulse signal, a new freeze pulse signal may be determined according to the preset conduction time interval and the pre-stored freeze pulse signal, and specifically, the pre-stored freeze pulse signal is a freeze pulse signal included in the previous freeze refrigeration instruction. Illustratively, the pre-store on-time interval is set to be less than 3 milliseconds. When the second outlet valve of the first control electromagnetic valve is connected with the freezing evaporator, the conduction time of the freezing pulse signal contained in the first freezing refrigeration command is 1 preset conduction time interval, namely 3 milliseconds. When the electromagnetic valve is controlled according to a first freezing and refrigerating instruction but the second outlet valve of the electromagnetic valve is not connected with the freezing evaporator, the conduction time of the freezing pulse signal contained in the first freezing and refrigerating instruction is set to be the sum of the conduction times of the pre-stored freezing pulse signal and the first freezing pulse signal. Illustratively, the pre-stored freeze pulse signal is 3 ms, the on-time of the first freeze pulse signal is 1 preset on-time interval of 3 ms, and the on-time of the second freeze pulse signal is 5 ms. In the embodiment of the invention, the purpose of connecting the second outlet valve of the control electromagnetic valve with the refrigeration evaporator can be realized by increasing the conduction time of the refrigeration pulse signal.

For example, a new on-time interval may be generated according to the sum of the pre-stored on-time intervals and the preset on-time intervals, and a new freeze pulse signal may be generated according to the number of pre-stored on-time intervals included in the pre-stored freeze pulse signal and the new on-time interval. Specifically, the preset on-time interval is 2 milliseconds, the pre-stored on-time interval is 3 milliseconds, and the new on-time interval is 5 milliseconds. Specifically, if the number of pre-stored on-time intervals of the pre-stored refrigeration pulse signal, that is, the refrigeration pulse signal included in the previous refrigeration command, is 2, the number of pulses of the new refrigeration pulse signal is 2, and the pulse on-time is 5 milliseconds.

For example, the new freeze pulse signal may be generated according to the number of pre-stored on-time intervals included in the pre-stored freeze pulse signal and the sum of the preset number and the new on-time intervals. Illustratively, the preset number is 2, and if the number of the pre-stored on-time intervals included in the pre-stored refrigeration pulse signal, that is, the number of the refrigeration pulse signal included in the previous refrigeration instruction is 1, the number of the new on-time intervals is 3. The number of pulses of the new freeze pulse signal is 3 and the pulse on time is the pre-stored on time interval, i.e. 3 ms.

For example, a new on-time interval may be generated according to the pre-stored on-time interval and the sum of the pre-set on-time intervals, and a number of new on-time intervals may be generated according to the number of pre-stored on-time intervals and the sum of the pre-set number included in the pre-stored freeze pulse signal, and a new freeze pulse signal may be generated according to the number of new on-time intervals and the new on-time intervals. Illustratively, the preset on-time interval is 2 milliseconds, the pre-existing on-time interval is 3 milliseconds, and the new on-time interval is 5 milliseconds. Illustratively, the preset number is 2, and if the number of the pre-stored on-time intervals included in the pre-stored refrigeration pulse signal, that is, the number of the refrigeration pulse signal included in the previous refrigeration instruction is 1, the number of the new on-time intervals is 3. The number of pulses of the new freeze pulse signal is 3 and the pulse on time is 5 milliseconds.

In the embodiment of the invention, in order to avoid the failure of the electromagnetic valve caused by the overlong conduction time, the pulse number and the pulse conduction time of the cold pulse signal need to be controlled. The exemplary cold pulse signal has a maximum number of pulses of 8, a pulse on time of 9 milliseconds maximum, and a pulse frequency of 45HZ to 65 HZ.

S806: and generating a new freezing and refrigerating instruction according to the new freezing pulse signal, and sending the new freezing and refrigerating instruction to the solenoid valve control module.

According to the electromagnetic valve control method provided by the embodiment, when the temperature variation of the freezing evaporator is lower than the preset freezing difference value, the condition that the first outlet valve is not opened due to the fact that the conduction time of the freezing pulse signal is short is shown, the conduction of the electromagnetic valve is controlled by increasing the conduction time of the freezing pulse signal, the refrigeration effect of the freezing evaporator is prevented from being influenced due to the fact that the electromagnetic valve is not conducted, and the refrigeration effect of a refrigerator is guaranteed.

Fig. 9 is a schematic structural diagram of a solenoid valve control device according to an embodiment of the present invention. The solenoid valve control device is applied to a controller, and as shown in fig. 9, the solenoid valve control device includes: an acquisition module 901 and a sending module 902.

An obtaining module 901, configured to obtain the temperature of the refrigerating compartment and the temperature of the freezing compartment detected by the temperature detecting module;

a sending module 902, configured to generate a refrigeration instruction if it is determined that the temperature of the refrigeration compartment is greater than or equal to a preset refrigeration temperature, and send the refrigeration instruction to the solenoid valve control module, so that the solenoid valve control module outputs a negative level to the first level end and a positive level to the second level end, so that the first outlet valve is connected to the refrigeration evaporator; and if the temperature of the freezing room is judged to be greater than or equal to the preset freezing temperature, generating a freezing and refrigerating instruction, sending the freezing and refrigerating instruction to the electromagnetic valve control module, and outputting a negative level to the second level end and a positive level to the first level end by the electromagnetic valve control module so that the second outlet valve is communicated with the freezing evaporator.

The apparatus provided in this embodiment may be used to implement the technical solutions of the above method embodiments, and the implementation principles and technical effects are similar, which are not described herein again.

Fig. 10 is a schematic structural diagram of a controller according to an embodiment of the present invention. As shown in fig. 10, the controller of the present embodiment includes: a processor 1001 and a memory 1002; wherein

A memory 1002 for storing computer-executable instructions;

the processor 1001 is configured to execute the computer executable instructions stored in the memory to implement the steps performed by the first server in the above embodiments. Reference may be made in particular to the description relating to the method embodiments described above.

Alternatively, the memory 1002 may be separate or integrated with the processor 1001.

When the memory 1002 is provided separately, the server further includes a bus 1003 for connecting the memory 1002 and the processor 1001.

The embodiment of the present invention further provides a computer storage medium, where a computer execution instruction is stored in the computer storage medium, and when a processor executes the computer execution instruction, the electromagnetic valve control method as described above is implemented.

The embodiment of the present invention further provides a computer program product, which includes a computer program, and when the computer program is executed by a processor, the method for controlling the solenoid valve is implemented. The embodiment of the present invention further provides a computer program product, which includes a computer program, and when the computer program is executed by a processor, the method for controlling the solenoid valve is implemented.

In the embodiments provided in the present invention, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described device embodiments are merely illustrative, and for example, the division of the modules is only one logical division, and other divisions may be realized in practice, for example, a plurality of modules may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or modules, and may be in an electrical, mechanical or other form.

The modules described as separate parts may or may not be physically separate, and parts displayed as modules may or may not be physical units, may be located in one position, or may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to implement the solution of the present embodiment.

In addition, functional modules in the embodiments of the present invention may be integrated into one processing unit, or each module may exist alone physically, or two or more modules are integrated into one unit. The unit formed by the modules can be realized in a hardware mode, and can also be realized in a mode of hardware and a software functional unit.

The integrated module implemented in the form of a software functional module may be stored in a computer-readable storage medium. The software functional module is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device) or a processor to execute some steps of the methods described in the embodiments of the present application.

It should be understood that the Processor may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of a method disclosed in connection with the present invention may be embodied directly in a hardware processor, or in a combination of hardware and software modules.

The Memory may include a Random Access Memory (RAM), a Non-Volatile Memory (NVM), for example, at least one disk Memory, and may also be a usb disk, a removable hard disk, a read-only Memory, a magnetic disk or an optical disk.

The bus may be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, an Extended ISA (EISA) bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, the buses in the figures of the present application are not limited to only one bus or one type of bus.

The storage medium may be implemented by any type of volatile or non-volatile Memory device or combination thereof, such as Static Random-Access Memory (SRAM), electrically Erasable Programmable Read-Only Memory (EEPROM), erasable Programmable Read-Only Memory (EPROM), programmable Read-Only Memory (PROM), read-Only Memory (ROM), magnetic Memory, flash Memory, magnetic disk or optical disk. A storage media may be any available media that can be accessed by a general purpose or special purpose computer.

An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. Of course, the storage medium may also be integral to the processor. The processor and the storage medium may reside in an Application Specific Integrated Circuits (ASIC). Of course, the processor and the storage medium may reside as discrete components in an electronic device or host device.

Those of ordinary skill in the art will understand that: all or a portion of the steps of implementing the above-described method embodiments may be performed by hardware associated with program instructions. The program may be stored in a computer-readable storage medium. When executed, the program performs steps comprising the method embodiments described above; and the aforementioned storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic or optical disks.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A refrigerator, characterized by comprising:

the refrigeration system is arranged in the box body and comprises a compressor, an electromagnetic valve, a refrigeration evaporator, a freezing evaporator, a filter and a condensation pipe; the solenoid valve comprises an inlet valve, a first outlet valve and a second outlet valve, the inlet valve of the solenoid valve is connected with the outlet of the filter, the first outlet valve of the solenoid valve is connected with the inlet of the refrigerating evaporator, the second outlet valve of the solenoid valve is connected with the inlet of the freezing evaporator, and the solenoid valve further comprises a first level end and a second level end;

the controller configured to:

2. The refrigerator of claim 1, wherein the temperature detection module is further configured to detect a refrigerating evaporator temperature and a freezing evaporator temperature.

3. The refrigerator of claim 2, wherein the controller is configured to, after the sending of the refrigeration instruction to the solenoid valve control module is performed, further:

4. The refrigerator of claim 2, wherein the refrigeration instruction comprises a refrigeration pulse signal;

the controller is configured to, after the obtaining of the refrigerating compartment temperature and the freezing compartment temperature detected by the temperature detection module is performed, further:

correspondingly, after executing the generating of the refrigeration instruction and sending the refrigeration instruction to the solenoid valve control module, the controller is further configured to:

if the temperature difference value of the refrigeration evaporator is smaller than a preset refrigeration difference value, determining a new refrigeration pulse signal according to a preset conduction time interval and a pre-stored refrigeration pulse signal, wherein the pre-stored refrigeration pulse signal is a refrigeration pulse signal contained in the previous refrigeration instruction;

5. The refrigerator according to claim 4, wherein the pre-stored refrigeration pulse signal comprises at least one pre-stored on-time interval;

the controller is configured, when performing the determining of the new refrigeration pulse signal according to the preset on-time interval and the pre-stored refrigeration pulse signal, in particular to:

or,

6. The refrigerator according to claim 2, wherein the freezing refrigeration command comprises a freezing pulse signal;

7. The refrigerator according to claim 6, wherein the pre-stored freeze pulse signal comprises at least one pre-stored on-time interval;

or,

generating a new number of conduction time intervals according to the number of the pre-stored conduction time intervals and the sum of the preset number of the pre-stored refrigeration pulse signals, and generating a new refrigeration pulse signal according to the new number of the conduction time intervals and the pre-stored conduction time intervals;

or generating new on-time intervals according to the pre-stored on-time intervals and the sum of the preset on-time intervals, generating new on-time intervals according to the number of the pre-stored on-time intervals and the sum of the preset number included in the pre-stored freeze pulse signal, and generating new freeze pulse signals according to the new on-time intervals and the new on-time intervals.

8. The refrigerator according to any one of claims 1 to 7, wherein the solenoid valve control module comprises a refrigerating signal conversion module, a freezing signal conversion module, a refrigerating switch module, and a freezing switch module;

sending the refrigerating and refrigerating instruction to a refrigerating signal conversion module so that the refrigerating signal conversion module controls the refrigerating switch module to be switched on and output a negative level to the first level end and a positive level to the second level end, and the first outlet valve is connected with the refrigerating evaporator;

9. The refrigerator of claim 8, wherein the cool switch module comprises a first switch tube and a second switch tube, and the freeze switch module comprises a third switch tube and a fourth switch tube.

10. A control method of an electromagnetic valve is characterized by being applied to a controller in a control module of a refrigerator, wherein the refrigerator further comprises a box body, a refrigerating system and a temperature detection module, wherein a refrigerating chamber and a freezing chamber are arranged in the box body, the refrigerating system is arranged in the box body, the refrigerating system comprises a compressor, an electromagnetic valve, a refrigerating evaporator, a freezing evaporator, a filter and a condenser pipe, the electromagnetic valve comprises an inlet valve, a first outlet valve and a second outlet valve, the inlet valve of the electromagnetic valve is connected with an outlet of the filter, the first outlet valve of the electromagnetic valve is connected with an inlet of the refrigerating evaporator, the second outlet valve of the electromagnetic valve is connected with an inlet of the freezing evaporator, and the electromagnetic valve further comprises a first level end and a second level end; the temperature detection module is used for detecting the temperature of the refrigerating chamber and the temperature of the freezing chamber; the control module further comprises an electromagnetic valve control module, the controller is respectively connected with the electromagnetic valve control module and the temperature detection module, and the electromagnetic valve control module is respectively connected with a first level end and a second level end of the electromagnetic valve;

the method comprises the following steps: