Refrigerator defrosting control methods, devices, air-cooled vehicle refrigerators, media and products

Abstract

This application discloses a refrigerator defrosting control method, device, air-cooled vehicle refrigerator, medium, and product, relating to the field of refrigerator control technology. The refrigerator defrosting control method includes: acquiring a set temperature and a first measured temperature of a target compartment inside the refrigerator; when both the set temperature and the first measured temperature are positive, controlling the refrigerator compressor to stop running; and promoting air circulation in the target compartment through the refrigerator's evaporator fan until a second measured temperature at the top of the evaporator reaches a first preset threshold, wherein the first preset threshold represents the temperature at which frost in the target compartment can melt under positive temperature conditions. This application can reduce energy waste caused by defrosting the refrigerator.

Description

Technical Field

[0001] This application relates to the field of refrigerator control technology, and in particular to a refrigerator defrosting control method, device, air-cooled vehicle refrigerator, medium and product. Background Technology

[0002] With the continuous development of new energy vehicles and in-vehicle refrigerators, the proportion of new energy vehicles equipped with in-vehicle refrigerators is constantly increasing. However, most in-vehicle refrigerators typically use direct cooling technology, which relies on natural convection for compartment cooling. This cooling method has disadvantages such as slow cooling, the need for periodic manual power-off for defrosting, and reduced heat exchange efficiency due to evaporator icing. Therefore, compared to direct cooling technology, applying air-cooling technology to in-vehicle refrigerators is a better solution.

[0003] Currently, for vehicle refrigerators using air-cooling technology, defrosting is typically done using heaters to melt the frost inside the refrigerator. However, because the heaters have high power, this method of defrosting results in a certain degree of energy waste.

[0004] Therefore, how to reduce energy waste caused by defrosting refrigerators is an urgent problem to be solved. Summary of the Invention

[0005] The main purpose of this application is to provide a refrigerator defrosting control method, device, air-cooled vehicle refrigerator, medium and product, which aims to reduce energy waste caused by defrosting the refrigerator.

[0006] To achieve the above objectives, this application provides a refrigerator defrosting control method, the refrigerator defrosting control method comprising:

[0007] Obtain the set temperature and the first measured temperature of the target compartment inside the refrigerator;

[0008] When both the set temperature and the first measured temperature are positive, the compressor of the refrigerator is controlled to stop running;

[0009] The air circulation in the target compartment is promoted by the evaporator fan of the refrigerator until the second measured temperature at the top of the evaporator of the refrigerator reaches the first preset threshold, wherein the first preset threshold represents the temperature at which the frost in the target compartment can melt under positive temperature conditions.

[0010] In one embodiment, after the step of promoting air circulation in the target compartment by means of the evaporator fan of the refrigerator until the second measured temperature at the top of the evaporator of the refrigerator reaches a first preset threshold, the method further includes:

[0011] The evaporator fan is controlled to stop running, and the first measured temperature is monitored to see if it reaches the preset positive temperature start-up temperature, wherein the positive temperature start-up temperature is higher than the first preset threshold.

[0012] When the first measured temperature reaches the positive start-up temperature, the compressor and the evaporator fan are controlled to start running.

[0013] In one embodiment, after the step of monitoring whether the first measured temperature has reached the preset positive temperature start-up temperature, the method further includes:

[0014] When the first measured temperature reaches the positive start-up temperature, the compressor is controlled to start running;

[0015] When the current running time of the compressor reaches the first preset time, the evaporator fan is controlled to start running.

[0016] In one embodiment, after the step of obtaining the set temperature and the first measured temperature of the target compartment inside the refrigerator, the method further includes:

[0017] When both the set temperature and the first measured temperature are negative, the refrigerator's heater is controlled to start running until the second measured temperature at the top of the refrigerator's evaporator reaches a second preset threshold, wherein the second preset threshold represents the temperature at which the frost in the target compartment can melt under negative temperature conditions.

[0018] In one embodiment, prior to the step of controlling the refrigerator's heater to start operating, the method further includes:

[0019] Control the refrigerator's compressor to stop running;

[0020] When the compressor's current shutdown duration reaches the second preset duration, the evaporator fan of the refrigerator is controlled to stop running.

[0021] In one embodiment, after the step of controlling the refrigerator's heater to start operating until the second measured temperature at the top of the refrigerator's evaporator reaches a second preset threshold, the method further includes:

[0022] The heater is controlled to stop running, and the second measured temperature is monitored to see if it reaches the preset negative temperature start-up temperature, wherein the negative temperature start-up temperature is higher than the second preset threshold.

[0023] When the second measured temperature reaches the negative start-up temperature, the compressor and evaporator fan of the refrigerator are controlled to start running.

[0024] In one embodiment, after the step of monitoring whether the second measured temperature has reached the preset negative temperature start-up temperature, the method further includes:

[0025] When the second measured temperature reaches the negative temperature start-up temperature, the compressor of the refrigerator is controlled to start running;

[0026] When the current running time of the compressor reaches the first preset time, the evaporator fan of the refrigerator is controlled to start running.

[0027] In one embodiment, the step of obtaining the set temperature and the first measured temperature of the target compartment inside the refrigerator includes:

[0028] During the operation of the refrigerator, monitor whether the refrigerator meets the preset defrosting conditions;

[0029] If the refrigerator meets the defrosting conditions, the step of obtaining the set temperature and the first measured temperature of the target compartment inside the refrigerator is performed.

[0030] Furthermore, to achieve the above objectives, this application also provides a refrigerator defrosting control device, the refrigerator defrosting control device comprising:

[0031] The acquisition module is used to acquire the set temperature and the first measured temperature of the target compartment inside the refrigerator;

[0032] The control module is used to control the refrigerator compressor to stop running when both the set temperature and the first measured temperature are positive.

[0033] The defrosting module is used to promote air circulation in the target compartment through the evaporator fan of the refrigerator until the second measured temperature at the top of the evaporator of the refrigerator reaches a first preset threshold, wherein the first preset threshold represents the temperature at which the frost in the target compartment can melt under positive temperature conditions.

[0034] In addition, to achieve the above objectives, this application also provides an air-cooled vehicle refrigerator, which includes a memory, a processor, and a refrigerator defrosting control program stored in the memory and executable on the processor. When the automatic control program is executed by the processor, it implements the steps of the refrigerator defrosting control method described above.

[0035] In addition, to achieve the above objectives, this application also provides a computer storage medium storing a refrigerator defrosting control program that can run on a processor. The program is invoked by the processor to implement the steps of the refrigerator defrosting control method described above.

[0036] In addition, to achieve the above objectives, this application also provides a computer program product, including a computer program that, when executed by a processor, implements the steps of the refrigerator defrosting control method described above.

[0037] This application provides a defrosting control method for a refrigerator. The method first obtains the set temperature and the first measured temperature of the target compartment inside the refrigerator. When it is detected that both the set temperature and the first measured temperature are positive, the refrigerator compressor is controlled to stop running. Then, the air circulation in the target compartment is promoted by the evaporator fan of the refrigerator until the second measured temperature at the top of the evaporator reaches the first preset threshold. The first preset threshold represents the temperature at which the frost in the target compartment can melt under positive temperature conditions.

[0038] In summary, compared to the energy-wasting traditional defrosting strategy using a heater, this application employs a defrosting method that stops the compressor and starts the evaporator fan to defrost the refrigerator compartment at a positive temperature. Specifically, once the target compartment in the refrigerator is determined to be at a positive temperature, the refrigerator compressor is stopped, i.e., cooling is halted. Then, the evaporator fan promotes air circulation in the target compartment, blowing out the remaining small amount of cold air from the evaporator, which exchanges heat with the space inside the compartment, causing the temperature inside the compartment to gradually rise until the second measured temperature at the top of the evaporator reaches the first preset threshold that allows the frost to melt. This achieves the defrosting effect on the positive temperature compartment without starting the heater. Furthermore, since the power of the evaporator fan is much less than that of the heater, this application reduces energy consumption during the defrosting process. Attached Figure Description

[0039] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0040] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0041] Figure 1 This is a schematic diagram of the internal architecture of a vehicle-mounted refrigerator according to an embodiment of the refrigerator defrosting control method of this application;

[0042] Figure 2 This is a schematic flowchart of the refrigerator defrosting control method according to an embodiment of this application;

[0043] Figure 3 This is a schematic diagram of the refrigerator defrosting control process of the refrigerator defrosting control method according to an embodiment of this application;

[0044] Figure 4 This is a schematic diagram of the module structure of the refrigerator defrosting control device according to an embodiment of this application;

[0045] Figure 5 This is a schematic diagram of the hardware operating environment involved in the embodiments of this application.

[0046] Explanation of icon numbers:

[0047] 1. Car refrigerator body; 2. Storage drawer; 3. Air duct plate assembly; 4. Built-in refrigeration evaporator assembly; 5. Motion mechanism assembly; 6. External refrigeration compressor assembly; 7. Upper door; 8. Front door; 9. Main control board; 31. Evaporator fan; 32. Internal temperature sensor; 41. Defrost heater; 42. Defrost temperature sensor; 51. Lower drive motor; 91. Temperature and humidity sensor.

[0048] The purpose, features, and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0049] It should be understood that the specific embodiments described herein are merely illustrative of the technical solutions of this application and are not intended to limit this application.

[0050] To better understand the technical solution of this application, a detailed description will be provided below in conjunction with the accompanying drawings and specific implementation methods.

[0051] Currently, for vehicle refrigerators using air-cooling technology, defrosting is typically done using heaters to melt the frost inside the refrigerator. However, because the heaters have high power, this method of defrosting results in a certain degree of energy waste.

[0052] Therefore, how to reduce energy waste caused by defrosting refrigerators is an urgent problem to be solved.

[0053] The main solution of this application is: to obtain the set temperature and the first measured temperature of the target compartment inside the refrigerator; when both the set temperature and the first measured temperature are positive, to control the compressor of the refrigerator to stop running; and to promote air circulation in the target compartment by means of the evaporator fan of the refrigerator until the second measured temperature at the top of the evaporator of the refrigerator reaches a first preset threshold, wherein the first preset threshold represents the temperature at which the frost in the target compartment can melt under positive temperature conditions.

[0054] Compared to the traditional defrosting strategy that uses a heater, which leads to energy waste, this application uses a defrosting method that stops the compressor and starts the evaporator fan to defrost the refrigerator compartment at a positive temperature. Specifically, when the target compartment in the refrigerator is determined to be at a positive temperature, the refrigerator compressor is stopped, i.e., the cooling is stopped. Then, the evaporator fan is used to promote air circulation in the target compartment. The fan blows out the small amount of cold air remaining in the evaporator, which exchanges heat with the space in the compartment, causing the temperature in the compartment to gradually rise until the second measured temperature at the top of the evaporator reaches the first preset threshold that can melt the frost. Thus, the defrosting effect on the positive temperature compartment is achieved without starting the heater. Furthermore, since the power of the evaporator fan is much smaller than that of the heater, this application reduces the energy consumption during the defrosting process.

[0055] The implementing entity in this embodiment is an air-cooled vehicle refrigerator. An air-cooled vehicle refrigerator refers to a vehicle refrigerator that uses air-cooling technology for compartment cooling. An air-cooled vehicle refrigerator can be a refrigerator with a wide temperature range or a narrow temperature range. The air-cooled vehicle refrigerator mainly relies on the coordinated operation of the compressor, evaporator, and evaporator fan to achieve the cooling effect. The following description uses an air-cooled vehicle refrigerator as the implementing entity to illustrate this embodiment and the subsequent embodiments.

[0056] like Figure 1 The diagram shows the internal structure of a vehicle-mounted refrigerator. The refrigerator includes a refrigerator body 1, a storage drawer 2, an air duct assembly 3, a built-in evaporator assembly 4, a motion mechanism assembly 5, an external compressor assembly 6, an upper door 7, a front door 8, and a main control board 9. The refrigerator body 1 contains the storage drawer 2. The lower motion mechanism assembly 5 drives the front door 8 and connects to the storage drawer 2 via a drive gear. The air duct assembly 3 is mounted at the rear of the refrigerator body 1, and the built-in evaporator assembly 4 faces the air outlet of the air duct assembly 3. The built-in evaporator assembly 4 is connected to the external compressor assembly 6 at the rear of the refrigerator body 1. An evaporator fan 31 is located on the top of one side of the air duct assembly 3, and an internal temperature sensor 32 is located at the bottom. A defrost heater 41 is embedded in the built-in evaporator assembly 4 through the evaporator end plate, and a defrost temperature sensor is located at the top of the evaporator piping. Sensor 42 has a water collection tank at its bottom, which is connected to the evaporator dish outside the car refrigerator body through a drain pipe; the motion mechanism assembly 5 is driven by the drive gear bearing of the lower drive motor 51 to drive the storage drawer 2, and the guide rail connects to the front door 8 to form an automatic door opening device; the external refrigeration compressor assembly 6 consists of a compressor, finned condenser, bottom cooling fan, dryer filter, and return gas capillary tube; together with the built-in evaporator assembly 4, it forms a refrigeration module device; the main control board 9 is externally equipped with a temperature and humidity sensor 91 to control the movement of the motion mechanism assembly, as well as the operation of the evaporator fan and the refrigeration module device.

[0057] Based on this, this application proposes a refrigerator defrosting control method according to the first embodiment, please refer to... Figure 2 The refrigerator defrosting control method includes steps S10 to S30:

[0058] Step S10: Obtain the set temperature and the first measured temperature of the target compartment inside the refrigerator;

[0059] It should be noted that a refrigerator compartment refers to the space inside the refrigerator where items are stored. The compartment that requires defrosting is called the target compartment. The set temperature of the target compartment refers to the user's desired temperature preset in advance. A temperature sensor (hereinafter referred to as the internal temperature sensor for distinction) is located at the lower part of the evaporator fan duct assembly of the refrigerator, used to detect the temperature inside the target compartment. The temperature detected by the internal temperature sensor is called the first measurement temperature for distinction.

[0060] In this embodiment, step S10 may include steps S101 to S102:

[0061] Step S101: During the operation of the refrigerator, monitor whether the refrigerator meets the preset defrosting conditions;

[0062] Step S102: If the refrigerator meets the defrosting conditions, perform the step of obtaining the set temperature and the first measured temperature of the target compartment inside the refrigerator.

[0063] It should be noted that the defrosting condition is preset to the defrosting timer reaching the preset defrosting cycle. This can be understood as the defrosting cycle being a fixed time length, meaning that the defrosting operation is performed once every defrosting cycle.

[0064] During normal operation of the refrigerator, it is monitored whether the refrigerator meets the preset defrosting conditions. When the refrigerator meets the defrosting conditions, defrosting is triggered and the refrigerator enters the defrosting state, which involves the steps of obtaining the set temperature and the first measured temperature of the target compartment inside the refrigerator.

[0065] In one feasible implementation, under certain temperature and humidity conditions, the refrigerator operates normally. The refrigerator's built-in control board program collects the user-set temperature, the internal temperature (i.e., the temperature detected by the temperature sensor), the ambient temperature and humidity, the refrigerator compressor's operating time, the number of times the refrigerator door is opened, and the duration of each opening. Then, it uses this collected data to time the defrost process according to certain logic. For example, when the refrigerator door is opened frequently, the defrost timer is accelerated. The defrost timer is compared with a preset defrost cycle, and defrosting is triggered when the defrost timer reaches the preset defrost cycle. It should be understood that after each defrost cycle is completed, the defrost timer is reset to zero, and the recording of the defrost timer restarts.

[0066] Step S20: When both the set temperature and the first measured temperature are positive, control the refrigerator compressor to stop running;

[0067] It should be noted that positive temperature refers to the temperature range above 0 degrees Celsius, while negative temperature refers to the temperature range below 0 degrees Celsius.

[0068] The system determines whether the set temperature and the first measured temperature are both positive. If both are positive, the refrigerator compressor stops running. It should be understood that the refrigerator compressor compresses the refrigerant into a high-temperature, high-pressure gas, which is then sent to the condenser. The condenser condenses the gas into a low-temperature, low-pressure liquid, which is then sent to the evaporator. Finally, the evaporator evaporates the liquid to produce cold air. Therefore, when the refrigerator compressor stops running, it means that the compressor has stopped cooling, and a small amount of residual cold air remains in the evaporator.

[0069] Step S30: The air circulation in the target compartment is promoted by the evaporator fan of the refrigerator until the second measured temperature at the top of the evaporator of the refrigerator reaches the first preset threshold, wherein the first preset threshold represents the temperature at which the frost in the target compartment can melt under positive temperature conditions.

[0070] It should be noted that the refrigerator's evaporator fan is used to blow out the cold air generated by the evaporator, that is, to deliver the cold air to the target compartment, so as to distribute the cold air evenly. A preset compartment temperature threshold (hereinafter referred to as the first preset threshold) is used to determine whether to exit the defrost mode. The aforementioned defrost mode refers to the method of shutting down the compressor and running the evaporator fan to defrost when the compartment is at a positive temperature. This first preset threshold represents the temperature at which frost in the target compartment can melt under positive temperature conditions. In other words, when the measured temperature in the target compartment reaches the first preset threshold, it is considered that the frost in the target compartment has basically melted. It should be understood that the above-mentioned first preset threshold is an empirical value. A temperature sensor (hereinafter referred to as the defrost temperature sensor) is installed at the top of the refrigerator's evaporator piping to detect the temperature at the top of the evaporator. The temperature data detected by the defrost temperature sensor is referred to as the second measured temperature. Furthermore, it should be understood that because the internal temperature sensor and the defrost temperature sensor are located in different positions within the refrigerator, the temperature values ​​detected by these two sensors will differ, thus the measured temperatures detected by the two sensors serve different purposes. Both the first and second measured temperatures are dynamic values; that is, the first measured temperature refers to the temperature data detected by the internal temperature sensor at different times, and the second measured temperature refers to the temperature data detected by the defrost temperature sensor at different times.

[0071] After the refrigerator compressor stops running, the evaporator fan continues to operate, promoting air circulation within the target compartment. This means that the remaining small amount of cold air in the evaporator is distributed throughout the compartment, facilitating heat exchange. Thus, it should be understood that because the compressor has stopped working and is no longer cooling, the temperature inside the target compartment gradually rises, and the frost layer begins to melt as the temperature increases. The defrosting mode is then considered complete when the second measured temperature at the top of the evaporator in the target compartment reaches the first preset threshold.

[0072] For example, when the obtained set temperature is positive and the first measured temperature detected by the temperature sensor inside the refrigerator is also positive, the defrosting program is initiated. This means the compressor stops running, while the evaporator fan continues to run. The fan operates at the evaporator location, blowing out cold air to exchange heat with the air inside the refrigerator compartment. The return air temperature at the evaporator is higher than the blowing air temperature, and this cycle continues until the frost layer in the target compartment begins to melt. Then, the temperature collected in real time by the defrosting temperature sensor located at the top of the evaporator pipes, i.e., the second measured temperature, is obtained, and it is determined whether the second measured temperature reaches a first preset threshold. If the second measured temperature reaches the first preset threshold, the defrosting stage is exited.

[0073] It should be noted that when the target compartment is at a positive temperature, the frost layer on the evaporator is relatively thin. If the heater is activated to defrost at this time, it will result in a certain degree of energy waste. Furthermore, the rapid temperature rise of the heater causes uneven heat distribution within the target compartment, leading to melting of stored items and negatively impacting the user experience. Additionally, the heater-based defrosting method increases the compartment load, requiring more energy to restore the compartment to a stable operating state, thus demanding a longer cooling time and further increasing energy consumption. Therefore, this application embodiment uses a defrosting method of stopping the compressor and starting the evaporator fan to defrost the refrigerator compartment at a positive temperature. Specifically, when it is determined that the target compartment in the refrigerator is at a positive temperature, the refrigerator compressor is stopped, i.e., the cooling is stopped. Then, the evaporator fan is used to promote air circulation in the target compartment. The fan blows out the small amount of cold air remaining in the evaporator and exchanges heat with the space in the compartment, so that the temperature in the compartment gradually rises until the second measured temperature at the top of the evaporator reaches the first preset threshold that can melt the frost. Thus, the defrosting effect of the positive temperature compartment is achieved without starting the heater. Since the power of the evaporator fan is much smaller than the power of the heater, this application reduces the energy consumption in the defrosting process.

[0074] In this embodiment, after step S30, the refrigerator defrosting control method of this application further includes steps A10 to A20:

[0075] Step A10: Control the evaporator fan to stop running and monitor whether the first measured temperature has reached the preset positive temperature start-up temperature, wherein the positive temperature start-up temperature is higher than the first preset threshold.

[0076] Step A20: When the first measured temperature reaches the positive start-up temperature, control the compressor and the evaporator fan to start running.

[0077] It should be noted that a pre-set chamber temperature (hereinafter referred to as the positive temperature start-up temperature for distinction) is used to determine when the compressor should be turned on after exiting the shutdown defrosting mode. That is, after exiting the shutdown defrosting mode and controlling the evaporator fan to turn off, if the measured temperature in the target chamber reaches the positive temperature start-up temperature, the compressor is restarted. It is understood that after the evaporator fan turns off, the temperature in the target chamber will further rise until it reaches the positive temperature start-up temperature. In other words, the positive temperature start-up temperature is higher than the first preset threshold. Turning on the compressor after the temperature in the target chamber reaches the positive temperature start-up temperature allows for a faster and more efficient cooling process. In this embodiment, the positive temperature start-up temperature can be set to any temperature value higher than the first preset threshold; this application does not limit this setting.

[0078] After the second measured temperature at the top of the evaporator reaches the first preset temperature, the shutdown defrosting mode is exited, and the evaporator fan is controlled to stop running. Then, the first measured temperature in the target room after the fan stops is monitored to determine whether the first measured temperature has reached the positive start-up temperature. When the first measured temperature reaches the positive start-up temperature, the compressor and evaporator fan are controlled to start running.

[0079] In this embodiment, after step A10, the refrigerator defrosting control method of this application may include steps A30 to A40:

[0080] Step A30: When the first measured temperature reaches the positive start-up temperature, control the compressor to start running;

[0081] Step A40: When the current running time of the compressor reaches the first preset time, control the evaporator fan to start running.

[0082] It should be noted that the preset duration for the compressor to run independently after exiting the defrosting mode (hereinafter referred to as the first preset duration for distinction) is specified. This embodiment does not limit the specific value of the first preset duration. For example, in this embodiment, the first preset duration is set to 3 minutes.

[0083] When the first measured temperature reaches the positive start-up temperature, the compressor is controlled to start running, that is, the compressor begins to perform cooling. The duration of continuous operation of the compressor after starting is recorded (i.e., the aforementioned runtime). It can be understood that the runtime is the length of the time period from the moment the compressor starts to the current moment. The runtime of the compressor is monitored to see if it reaches a first preset duration. If the runtime of the compressor reaches the first preset duration, the evaporator fan is controlled to start running.

[0084] Thus, in this embodiment of the application, after exiting the defrost mode, the compressor is turned on first, and then the evaporator fan is turned on. This ensures that the evaporator fan blows out cold air after it is turned on, thereby improving the efficiency of restoring the temperature of the target room to the user-set temperature. Moreover, it can avoid the situation where the fan blows out hot air due to the simultaneous operation of the compressor and the evaporator fan, thus avoiding the problem of the hot air blown out by the fan causing the stored food in the refrigerator to melt, thereby improving the user experience.

[0085] Based on the first embodiment described above, a second embodiment of the refrigerator defrosting control method of this application is proposed. In the second embodiment, after step S10, the refrigerator defrosting control method of this application further includes step B10:

[0086] Step B10: When both the set temperature and the first measured temperature are negative, control the refrigerator's heater to start running until the second measured temperature at the top of the refrigerator's evaporator reaches a second preset threshold, wherein the second preset threshold represents the temperature at which the frost in the target compartment can melt under negative temperature conditions.

[0087] It should be noted that heater defrosting refers to the method of defrosting by heating the heater (i.e., defrosting heater) when the room is at a negative temperature. A room temperature threshold (hereinafter referred to as the second preset threshold for distinction) is preset to determine whether to exit the heater defrosting program. This second preset threshold represents the temperature at which frost in the target room can melt under negative temperature conditions. That is, when the second measured temperature reaches the second preset threshold, it is considered that the frost in the target room has been basically melted. It should be understood that the above-mentioned second preset threshold is also an empirical value.

[0088] If the set temperature is detected to be negative and the first measured temperature is also negative, the refrigerator's heater is controlled to start running until the second measured temperature at the top of the refrigerator's evaporator reaches the second preset threshold.

[0089] In this embodiment, before the step of "controlling the refrigerator's heater to start operating" in step B10, the refrigerator defrosting control method of this application further includes steps C10 to C20:

[0090] Step C10: Control the refrigerator's compressor to stop running;

[0091] Step C20: When the current shutdown duration of the compressor reaches the second preset duration, control the evaporator fan of the refrigerator to stop running.

[0092] It should be noted that the preset duration for which the compressor stops running and the evaporator fan continues to run after entering the heater defrosting mode is (hereinafter referred to as the second preset duration for distinction). This application embodiment does not limit the specific value of the aforementioned second preset duration.

[0093] After determining that the target room is at a negative temperature, the refrigerator compressor is first stopped, i.e., cooling is stopped. Then, the evaporator fan continues to run for a second preset time to blow out the remaining cold air in the evaporator, allowing it to exchange heat with the air in the target room and raising the temperature inside. Once the compressor's current shutdown time reaches the second preset time, that is, after the fan's independent running time reaches the second preset time, the evaporator fan stops, and the heater is activated. It should be noted that the compressor's current shutdown time is the duration of the time interval from the moment the compressor shuts off after entering the heater defrost mode to the current moment.

[0094] For example, when the user-set temperature is detected to be negative and the first measured temperature is also negative, the defrosting program of the defrosting heater is started, the compressor is stopped (i.e., the cooling is stopped), and the evaporator fan continues to run for a first preset time, so that the temperature in the target room rises. Then the defrosting heater is turned on to further increase the temperature in the target room, so that the frost layer on the surface of the built-in evaporator component begins to melt. At the same time, the second measured temperature detected by the defrosting temperature sensor is obtained, and when the second measured temperature reaches the second preset threshold, it is considered that the frost layer has basically melted and the defrosting mode of the heater is exited.

[0095] Thus, in this embodiment of the application, by controlling the compressor to stop running and controlling the evaporator fan to run continuously before turning on the heater, the residual cold energy in the evaporator is quickly removed, and the initial temperature of the target room is increased when the heater is defrosting, thereby shortening the working time of the heater and reducing energy consumption.

[0096] In this embodiment, after step B10, the refrigerator defrosting control method of this application further includes steps D10 to D20:

[0097] Step D10: Control the heater to stop running and monitor whether the second measured temperature reaches the preset negative temperature start-up temperature, wherein the negative temperature start-up temperature is higher than the second preset threshold.

[0098] Step D20: When the second measured temperature reaches the negative temperature start-up temperature, control the compressor and evaporator fan of the refrigerator to start running.

[0099] It should be noted that a pre-set chamber temperature (hereinafter referred to as the negative start-up temperature for distinction) is used to determine when to start the compressor after exiting the heater defrosting mode. That is, after exiting the heater defrosting mode and controlling the heater to turn off, if the measured temperature in the target chamber reaches the negative start-up temperature, the compressor is restarted. It is understood that after the heater is turned off, the temperature in the target chamber will further rise until it reaches the negative start-up temperature. In other words, the negative start-up temperature is higher than the second preset threshold. Starting the compressor after the temperature in the target chamber reaches the negative start-up temperature allows for a faster and more efficient cooling process. In this embodiment, the negative start-up temperature can be set to any temperature value higher than the second preset threshold; this application does not limit this setting.

[0100] After detecting that the second measured temperature has reached the second preset threshold, the defrosting mode of the heater is exited and the heater is stopped. At this time, the temperature detected by the defrosting temperature sensor continues to rise. When the second measured temperature detected by the defrosting temperature sensor reaches the negative start-up temperature, the compressor and evaporator fan are restarted.

[0101] In this embodiment, after step D10, the refrigerator defrosting control method of this application may include steps D30 to D40:

[0102] Step D30: When the second measured temperature reaches the negative temperature start-up temperature, control the refrigerator compressor to start running;

[0103] Step D40: When the current running time of the compressor reaches the first preset time, control the evaporator fan of the refrigerator to start running.

[0104] When the second measured temperature reaches the negative start-up temperature, the compressor is controlled to start running, that is, the compressor starts to perform refrigeration. The running time of the compressor is recorded, and it is monitored whether the running time of the compressor reaches the first preset time. If the running time of the compressor reaches the first preset time, the evaporator fan is controlled to start running.

[0105] Thus, in this embodiment, after exiting the defrosting mode of the heater, the compressor is turned on first, and after waiting for a first preset time, the evaporator fan is turned on. At this time, the built-in evaporator assembly has cooled for the first preset time to form a low temperature, so the fan blows out cold air, thereby improving the efficiency of restoring the temperature of the target room to the user-set temperature. Moreover, it can avoid the situation where the fan blows out hot air due to the simultaneous operation of the compressor and the evaporator fan, thus avoiding the problem of the hot air blown out by the fan causing the stored items in the refrigerator to melt, thereby improving the user experience.

[0106] For example, such as Figure 3 The diagram shows the refrigerator defrosting control process. First, the defrosting time t is recorded, and it is determined whether t has reached the preset defrosting cycle T. If so, it is further determined whether the set temperature and the first measured temperature are both positive. If both the set temperature and the first measured temperature are positive, the shutdown-blowing defrosting program is started, entering the shutdown-blowing defrosting mode. First, the compressor is stopped from cooling, while the evaporator fan continues to work until the second measured temperature detected by the defrosting temperature sensor reaches the first preset threshold. Then, the evaporator fan is stopped. Next, it is determined whether the first measured temperature has reached the positive start-up temperature. If so, the compressor is started. After a first preset time, the evaporator fan is turned on. If both the set temperature and the first measured temperature are negative, the heater defrosting program is started, and the heater defrosting mode is entered. First, the compressor is stopped from cooling, and the evaporator fan is kept running for a second preset time. Then, the evaporator fan is turned off, and the heater is turned on until the second measured temperature reaches the second preset threshold. Then, the heater is turned off. Then, it is further determined whether the second measured temperature has reached the negative start-up temperature. If the second measured temperature has reached the negative start-up temperature, the compressor is turned on, and the evaporator fan is turned on after a second preset time.

[0107] This application also provides a refrigerator defrosting control device. Please refer to... Figure 4 The refrigerator defrosting control device includes:

[0108] The acquisition module 10 is used to acquire the set temperature and the first measured temperature of the target compartment inside the refrigerator;

[0109] Control module 20 is used to control the compressor of the refrigerator to stop running when both the set temperature and the first measured temperature are positive.

[0110] The defrosting module 30 is used to promote air circulation in the target compartment through the evaporator fan of the refrigerator until the second measured temperature at the top of the evaporator of the refrigerator reaches a first preset threshold, wherein the first preset threshold represents the temperature at which the frost in the target compartment can melt under positive temperature conditions.

[0111] Optionally, the refrigerator defrosting control device further includes a first delay control module, the first delay control module being used for:

[0112] The evaporator fan is controlled to stop running, and the first measured temperature is monitored to see if it reaches the preset positive temperature start-up temperature, wherein the positive temperature start-up temperature is higher than the first preset threshold.

[0113] When the first measured temperature reaches the positive start-up temperature, the compressor and the evaporator fan are controlled to start running.

[0114] Optionally, the first delay control module is further configured to:

[0115] When the first measured temperature reaches the positive start-up temperature, the compressor is controlled to start running;

[0116] When the current running time of the compressor reaches the first preset time, the evaporator fan is controlled to start running.

[0117] Optionally, the refrigerator defrosting control device further includes a negative temperature defrosting module, which is used for:

[0118] When both the set temperature and the first measured temperature are negative, the refrigerator's heater is controlled to start running until the second measured temperature at the top of the refrigerator's evaporator reaches a second preset threshold, wherein the second preset threshold represents the temperature at which the frost in the target compartment can melt under negative temperature conditions.

[0119] Optionally, the refrigerator defrosting control device further includes a second delay control module, the second delay control module being used for:

[0120] Control the refrigerator's compressor to stop running;

[0121] When the compressor's current shutdown duration reaches the second preset duration, the evaporator fan of the refrigerator is controlled to stop running.

[0122] Optionally, the refrigerator defrosting control device further includes a third delay control module, which is used for:

[0123] The heater is controlled to stop running, and the second measured temperature is monitored to see if it reaches the preset negative temperature start-up temperature, wherein the negative temperature start-up temperature is higher than the second preset threshold.

[0124] When the second measured temperature reaches the negative start-up temperature, the compressor and evaporator fan of the refrigerator are controlled to start running.

[0125] Optionally, the third delay control module is further configured to:

[0126] When the second measured temperature reaches the negative temperature start-up temperature, the compressor of the refrigerator is controlled to start running;

[0127] When the current running time of the compressor reaches the first preset time, the evaporator fan of the refrigerator is controlled to start running.

[0128] Optionally, the acquisition module 10 is further configured to:

[0129] During the operation of the refrigerator, monitor whether the refrigerator meets the preset defrosting conditions;

[0130] If the refrigerator meets the defrosting conditions, the step of obtaining the set temperature and the first measured temperature of the target compartment inside the refrigerator is performed.

[0131] The refrigerator defrosting control device provided in this application, employing the refrigerator defrosting control method in the above embodiments, can reduce energy waste caused during refrigerator defrosting. Compared with the prior art, the beneficial effects of the refrigerator defrosting control device provided in this application are the same as those of the refrigerator defrosting control method provided in the above embodiments, and other technical features in the refrigerator defrosting control device are the same as those disclosed in the methods of the above embodiments, and will not be repeated here.

[0132] This application also provides an air-cooled vehicle refrigerator, which includes: at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor, which are executed by the at least one processor to enable the at least one processor to perform the refrigerator defrosting control method in the above embodiments.

[0133] The following is for reference. Figure 5 It shows a structural schematic diagram of an air-cooled vehicle refrigerator suitable for implementing embodiments of this application. Figure 5 The air-cooled vehicle refrigerator shown is merely an example and should not impose any limitations on the functionality and scope of use of the embodiments of this application.

[0134] like Figure 5As shown, the air-cooled vehicle refrigerator may include a processing unit 101 (e.g., a central processing unit, a graphics processor, etc.), which can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM) 102 or a program loaded from a storage device 103 into a random access memory (RAM) 104. The RAM 104 also stores various programs and data required for the operation of the air-cooled vehicle refrigerator. The processing unit 101, ROM 102, and RAM 104 are interconnected via a bus 105. An input / output (I / O) interface 106 is also connected to the bus. Typically, the following systems can be connected to the I / O interface 106: input devices 107 including, for example, a touchscreen, touchpad, keyboard, mouse, image sensor, microphone, accelerometer, gyroscope, etc.; output devices 108 including, for example, a liquid crystal display (LCD), speaker, vibrator, etc.; storage devices 103 including, for example, magnetic tape, hard disk, etc.; and communication devices 109. Communication device 109 allows the air-cooled vehicle refrigerator to communicate wirelessly or wiredly with other devices to exchange data. While the figure shows an air-cooled vehicle refrigerator with various systems, it should be understood that implementation or possession of all the systems shown is not required. More or fewer systems may be implemented alternatively.

[0135] In particular, according to embodiments of this disclosure, the processes described above with reference to the flowcharts can be implemented as computer software programs. For example, embodiments of this disclosure include a computer program product comprising a computer program carried on a computer-readable medium, the computer program containing program code for performing the methods shown in the flowcharts. In such embodiments, the computer program can be downloaded and installed from a network via a communication device, or installed from storage device 103, or installed from ROM 102. When the computer program is executed by processing device 101, it performs the functions defined in the methods of the embodiments of this application.

[0136] The air-cooled vehicle refrigerator provided in this application adopts the refrigerator defrosting control method in the above embodiments, which can reduce energy waste caused by defrosting the refrigerator. Compared with the prior art, the beneficial effects of the air-cooled vehicle refrigerator provided in this application are the same as the beneficial effects of the refrigerator defrosting control method provided in the above embodiments, and other technical features of the air-cooled vehicle refrigerator are the same as the features disclosed in the methods of the above embodiments, and will not be repeated here.

[0137] It should be understood that various parts of the embodiments of this application can be implemented using hardware, software, firmware, or a combination thereof. In the description of the above embodiments, specific features, structures, materials, or characteristics can be combined in any suitable manner in one or more embodiments or examples.

[0138] The above description is merely a specific implementation of the embodiments of this application, but the protection scope of the embodiments of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the protection scope of the embodiments of this application. Therefore, the protection scope of the embodiments of this application should be determined by the protection scope of the claims.

[0139] This application also provides a computer storage medium storing a smart home system program that can run on a processor, wherein computer-readable program instructions are used to execute the refrigerator defrosting control method in the above embodiments.

[0140] The computer storage medium provided in this application embodiment may be, for example, a USB flash drive, but is not limited to electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems, devices, or any combination thereof. More specific examples of computer storage media may include, but are not limited to: electrical connections with one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fibers, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof. In this embodiment, the computer storage medium may be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, system, or device. The program code contained on the computer storage medium may be transmitted using any suitable medium, including but not limited to: wires, optical cables, RF (Radio Frequency), etc., or any suitable combination thereof.

[0141] The aforementioned computer storage medium may be included in the air-cooled vehicle refrigerator; or it may exist independently and not be installed in the air-cooled vehicle refrigerator.

[0142] The aforementioned computer storage medium carries one or more programs. When the aforementioned one or more programs are executed by the air-cooled vehicle refrigerator, the air-cooled vehicle refrigerator: acquires a set temperature and a first measured temperature of the target compartment inside the refrigerator; when both the set temperature and the first measured temperature are positive, controls the refrigerator's compressor to stop running; and promotes air circulation in the target compartment through the refrigerator's evaporator fan until the second measured temperature at the top of the refrigerator's evaporator reaches a first preset threshold, wherein the first preset threshold represents the temperature at which frost in the target compartment can melt under positive temperature conditions.

[0143] Computer program code for performing the operations of this disclosure can be written in one or more programming languages ​​or a combination thereof, including object-oriented programming languages ​​such as Java, Smalltalk, and C++, and conventional procedural programming languages ​​such as the "C" language or similar programming languages. The program code can be executed entirely on the user's computer, partially on the user's computer, as a standalone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving remote computers, the remote computer can be connected to the user's computer via any type of network—including a local area network (LAN) or a wide area network (WAN)—or can be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0144] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to various embodiments of this application. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions indicated in the blocks may occur in a different order than those indicated in the drawings. For example, two consecutively indicated blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, can be implemented using a dedicated hardware-based system that performs the specified function or operation, or using a combination of dedicated hardware and computer instructions.

[0145] The modules described in the embodiments of this application can be implemented in software or hardware. The names of the modules do not necessarily limit the functionality of the unit itself.

[0146] The readable storage medium provided in this application embodiment is a computer storage medium, which stores computer-readable program instructions for executing the above-described refrigerator defrosting control method, thereby reducing energy waste caused during refrigerator defrosting. Compared with the prior art, the beneficial effects of the computer storage medium provided in this application embodiment are the same as the beneficial effects of the refrigerator defrosting control method provided in the above embodiments, and will not be repeated here.

[0147] This application also provides a computer program product, including a computer program that, when executed by a processor, implements the steps of the refrigerator defrosting control method described above.

[0148] The computer program product provided in this application can reduce energy waste caused by defrosting a refrigerator. Compared with the prior art, the beneficial effects of the computer program product provided in this application are the same as the beneficial effects of the refrigerator defrosting control method provided in the above embodiments, and will not be repeated here.

[0149] The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent scope of this application.

Claims

1. A method for controlling defrosting in a refrigerator, characterized in that, The refrigerator defrosting control method includes: Obtain the set temperature and the first measured temperature of the target compartment inside the refrigerator; When both the set temperature and the first measured temperature are positive, the compressor of the refrigerator is controlled to stop running; The air circulation in the target compartment is promoted by the evaporator fan of the refrigerator until the second measured temperature at the top of the evaporator of the refrigerator reaches the first preset threshold, wherein the first preset threshold represents the temperature at which the frost in the target compartment can melt under positive temperature conditions.

2. The method as described in claim 1, characterized in that, After the step of promoting air circulation in the target compartment by means of the evaporator fan of the refrigerator until the second measured temperature at the top of the evaporator of the refrigerator reaches the first preset threshold, the method further includes: The evaporator fan is controlled to stop running, and the first measured temperature is monitored to see if it reaches the preset positive temperature start-up temperature, wherein the positive temperature start-up temperature is higher than the first preset threshold. When the first measured temperature reaches the positive start-up temperature, the compressor and the evaporator fan are controlled to start running.

3. The method as described in claim 2, characterized in that, After the step of monitoring whether the first measured temperature has reached the preset positive temperature start-up temperature, the method further includes: When the first measured temperature reaches the positive start-up temperature, the compressor is controlled to start running; When the current running time of the compressor reaches the first preset time, the evaporator fan is controlled to start running.

4. The method as described in claim 1, characterized in that, After the step of obtaining the set temperature and the first measured temperature of the target compartment inside the refrigerator, the method further includes: When both the set temperature and the first measured temperature are negative, the refrigerator's heater is controlled to start running until the second measured temperature at the top of the refrigerator's evaporator reaches a second preset threshold, wherein the second preset threshold represents the temperature at which the frost in the target compartment can melt under negative temperature conditions.

5. The method as described in claim 4, characterized in that, Before the step of controlling the refrigerator's heater to start operating, the method further includes: Control the refrigerator's compressor to stop running; When the compressor's current shutdown duration reaches the second preset duration, the evaporator fan of the refrigerator is controlled to stop running.

6. The method as described in claim 4, characterized in that, After the step of controlling the refrigerator's heater to start operating until the second measured temperature at the top of the refrigerator's evaporator reaches a second preset threshold, the method further includes: The heater is controlled to stop running, and the second measured temperature is monitored to see if it reaches the preset negative temperature start-up temperature, wherein the negative temperature start-up temperature is higher than the second preset threshold. When the second measured temperature reaches the negative start-up temperature, the compressor and evaporator fan of the refrigerator are controlled to start running.

7. The method as described in claim 6, characterized in that, After the step of monitoring whether the second measured temperature has reached the preset negative temperature start-up temperature, the method further includes: When the second measured temperature reaches the negative temperature start-up temperature, the compressor of the refrigerator is controlled to start running; When the current running time of the compressor reaches the first preset time, the evaporator fan of the refrigerator is controlled to start running.

8. The method according to any one of claims 1 to 7, characterized in that, The steps of obtaining the set temperature and the first measured temperature of the target compartment inside the refrigerator include: During the operation of the refrigerator, monitor whether the refrigerator meets the preset defrosting conditions; If the refrigerator meets the defrosting conditions, the step of obtaining the set temperature and the first measured temperature of the target compartment inside the refrigerator is performed.

9. A refrigerator defrosting control device, characterized in that, The refrigerator defrosting control device includes: The acquisition module is used to acquire the set temperature and the first measured temperature of the target compartment inside the refrigerator; The control module is used to control the refrigerator compressor to stop running when both the set temperature and the first measured temperature are positive. The defrosting module is used to promote air circulation in the target compartment through the evaporator fan of the refrigerator until the second measured temperature at the top of the evaporator of the refrigerator reaches a first preset threshold, wherein the first preset threshold represents the temperature at which the frost in the target compartment can melt under positive temperature conditions.

10. A wind-cooled vehicle refrigerator, characterized in that, The refrigerator includes a memory, a processor, and a refrigerator defrosting control program stored in the memory and executable on the processor, wherein the refrigerator defrosting control program, when executed by the processor, implements the steps of the refrigerator defrosting control method as described in any one of claims 1 to 8.

11. A computer storage medium, characterized in that, The refrigerator defrosting control program is stored and can run on a processor. The refrigerator defrosting control program is invoked by the processor to implement the steps of the refrigerator defrosting control method according to any one of claims 1 to 8.

12. A computer program product, characterized in that, The computer program product includes a computer program that, when executed by a processor, implements the steps of the refrigerator defrosting control method as described in any one of claims 1 to 8.

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