Dehumidification device with double evaporators, control method and system, refrigerator and electronic equipment

Abstract

The invention relates to the technical field of intelligent refrigerators, in particular to a dehumidification device with double evaporators, a control method and system, a refrigerator and electronic equipment. The first evaporator and the second evaporator are sequentially arranged in the air circulation direction of the air return duct of the refrigerator, environment data in the refrigerator are obtained, and switching control over the first evaporator is conducted through the control valve according to the environment data in the refrigerator. Gas with high humidity firstly passes through the first evaporator to be subjected to primary heat exchange, is subjected to primary frosting on the first evaporator, reduces the humidity in hot air, then reaches the main evaporator and is subjected to secondary heat exchange on the second evaporator, and then cold air is blown into a refrigerating chamber or a freezing chamber through the fan. Frosting of an evaporator of the refrigerator is reduced, the defrosting period is prolonged, and the influence of defrosting heating on temperature fluctuation of the refrigerator in the defrosting period is reduced. The defrosting period is shortened to a great extent, the food fresh-keeping degree is greatly improved, the user experience is improved, and the intelligent degree of a refrigerator dehumidification scheme is improved to a great extent.

Description

Technical Field

[0001] The present invention relates to the technical field of intelligent refrigerators, and in particular to a dual-evaporator dehumidification device and a control method, system, refrigerator, and electronic equipment. Background Art

[0002] During the refrigeration process, the air-cooled refrigerator generates cold air through the evaporator, and then uses the fan to blow the cold air into the refrigerator or freezer. At the same time, the hot gas in the refrigerator or freezer reaches the evaporator through the return air duct, and enters the refrigerator or freezer as cold air again after heat exchange on the evaporator, thus forming a refrigeration cycle. Because the air humidity in the refrigerator is generally high, the hot gas will frost when it passes through the evaporator to cool down. Frosting on the evaporator will cause the heat exchange efficiency to decrease, affecting the refrigeration effect of the refrigerator. Therefore, in order to better ensure the refrigeration effect of the refrigerator, refrigerators on the market are generally equipped with a defrosting function. However, during the defrosting process, the temperature fluctuation range of the refrigerator compartment is large and the temperature is high, and the defrosting cycle is long, which affects the freshness of food, shortens the storage time of food, and causes a decrease in the quality of food storage.

[0003] Therefore, the prior art needs to be further developed. Summary of the invention

[0004] The purpose of the present invention is to overcome the above-mentioned technical deficiencies and provide a dual-evaporator dehumidification device and control method, system, refrigerator, and electronic equipment to solve the technical problems existing in the prior art that frost occurs on the evaporator, resulting in a decrease in the refrigeration efficiency of the refrigerator, a large fluctuation in the temperature of the refrigerator compartment during the defrosting process and a high temperature, and a long defrosting cycle, which affects the freshness of food, shortens the food storage time, and causes a decrease in the quality of food storage.

[0005] To achieve the above technical objectives, according to a first aspect of the present invention, the present invention provides a dehumidification device with two evaporators, comprising: A first evaporator and a second evaporator are sequentially cascaded and arranged in the gas flow direction of the refrigerator return air duct; An acquisition module is used to obtain environmental data inside the refrigerator; The control module is used to control the operating state of the first evaporator according to the environmental data inside the refrigerator to reduce the humidity of the gas flowing through the second evaporator.

[0006] Specifically, the first evaporator is controllably connected to a first control valve, and the first control valve is used to adjust the operating state of the first evaporator under the control of the control module; The second evaporator is controllably connected to a second control valve, and the second control valve is used to adjust the operating state of the second evaporator under the control of the control module.

[0007] Specifically, the acquisition module includes at least one of the following: a first temperature sensor disposed on the second evaporator; A second temperature sensor disposed in the refrigerating chamber; A third temperature sensor is disposed in the freezing chamber.

[0008] Specifically, the device further includes: The fan, the first evaporator and the second evaporator are arranged in the air outlet direction of the fan.

[0009] According to a second method of the present invention, there is provided a refrigerator, comprising: The above-mentioned double evaporator dehumidification device.

[0010] According to a third aspect of the present invention, there is provided a dehumidification control method for a dual evaporator, comprising: S100, obtaining environmental data inside the refrigerator; S200: Control the operating state of the first evaporator according to the environmental data inside the refrigerator.

[0011] Specifically, the step of obtaining the environmental data inside the refrigerator includes: Acquiring a first temperature at a preset time interval using a first temperature sensor disposed on the second evaporator; Using a second temperature sensor disposed in the refrigerating chamber to obtain a second temperature at a preset time interval; The third temperature is acquired according to a preset time interval using a third temperature sensor disposed in the freezing chamber.

[0012] Specifically, controlling the operating state of the first evaporator according to the environmental data inside the refrigerator includes: S210, after the refrigerator is powered on, controlling the first evaporator to be closed, and controlling the second evaporator to be opened; S220, determining whether the second temperature or the third temperature continues to rise within a first preset time; S230: Control the operating state of the first evaporator according to the judgment result.

[0013] Specifically, controlling the operating state of the first evaporator according to the judgment result includes: If the second temperature or the third temperature continues to rise within the first preset time, the first control valve is controlled to open, thereby controlling the first evaporator to open; If the second temperature and the third temperature do not continue to rise within the first preset time, the first control valve is kept closed, and the first evaporator is further kept closed.

[0014] Specifically, if the second temperature or the third temperature continues to rise within the first preset time, controlling the first control valve to open, and then controlling the first evaporator to open, also includes: Obtaining a second temperature of the refrigerating chamber and a third temperature of the freezing chamber at a preset time interval, determining whether the second temperature is less than or equal to a second preset threshold, and determining whether the third temperature is less than or equal to a third preset threshold; If the second temperature is less than or equal to the second preset threshold, and the third temperature is less than or equal to the third preset threshold, the first control valve is controlled to be closed, and the first evaporator is further controlled to be closed; If the second temperature is greater than the second preset threshold, or the third temperature is greater than the third preset threshold, the first control valve is kept open, thereby keeping the first evaporator running continuously.

[0015] Specifically, if the second temperature and the third temperature do not continue to rise within the first preset time, keeping the first control valve closed, and then keeping the first evaporator closed, also includes: Determine whether the refrigerator has started to defrost; If defrosting does not start, the first control valve is kept closed, thereby keeping the first evaporator closed; If defrosting starts, the first control valve is controlled to open, and then the first evaporator is controlled to open.

[0016] Specifically, if defrosting starts, controlling the first control valve to open, and then controlling the first evaporator to open, also includes: Determine whether the refrigerator stops defrosting; If so, determining whether the second temperature is less than or equal to the second preset threshold value within the first preset time, and determining whether the third temperature is less than or equal to the third preset threshold value within the first preset time; If the second temperature is less than or equal to the second preset threshold value within the first preset time, and the third temperature is less than or equal to the third preset threshold value within the first preset time, the first control valve is controlled to be closed, and the first evaporator is further controlled to be closed; If the second temperature is not less than or equal to the second preset threshold value within the first preset time, or the third temperature is not less than or equal to the third preset threshold value within the first preset time, the first control valve is kept open, and the first evaporator is kept open.

[0017] Specifically, the step of determining whether the refrigerator has started to defrost includes: Obtaining the operating status data of the defrost heater provided in the refrigerator, and then determining whether the defrost heater in the refrigerator is turned on; If the defrost heater in the refrigerator is turned on, it is determined that the refrigerator starts to defrost; If the defrost heater in the refrigerator is not turned on or stops running, it is determined that the refrigerator has not started defrosting or has stopped defrosting.

[0018] Specifically, the step of determining whether the refrigerator stops defrosting includes: Determining whether the first temperature data is greater than or equal to a first preset threshold; If so, it is determined that the refrigerator stops defrosting; If not, it is determined that the refrigerator has not stopped defrosting.

[0019] According to a fourth aspect of the present invention, there is provided a dual evaporator dehumidification control system, comprising: A first evaporator and a second evaporator are sequentially cascaded and arranged in the gas flow direction of the refrigerator return air duct; An acquisition module is used to obtain environmental data inside the refrigerator; The control module is used to control the operating state of the first evaporator according to the environmental data inside the refrigerator to reduce the humidity of the gas flowing through the second evaporator.

[0020] According to a fifth aspect of the present invention, there is provided an electronic device, comprising: a memory; and a processor, wherein the memory stores computer-readable instructions, and when the computer-readable instructions are executed by the processor, the above-mentioned dehumidification control method for the dual evaporator is implemented.

[0021] Beneficial effects: The present invention sequentially arranges the first evaporator and the second evaporator in the gas flow direction of the refrigerator return air duct, obtains the environmental data inside the refrigerator, and controls the switching of the first evaporator by the control valve according to the environmental data inside the refrigerator. The gas with high humidity first passes through the first evaporator for the initial heat exchange, and frosts on the first evaporator for the initial time, reduces the humidity in the hot air, and then reaches the main evaporator, performs the second heat exchange on the second evaporator, and then the fan blows the cold air into the refrigeration room or the freezer. The frost formation of the refrigerator evaporator is reduced, the defrosting cycle is extended, and the influence of defrosting heating on the temperature fluctuation of the refrigerator during the defrosting cycle is reduced. The technical problems existing in the prior art that the frosting phenomenon on the evaporator leads to the decrease of the refrigerator refrigeration efficiency, the large fluctuation range of the refrigerator compartment temperature and the high temperature during the defrosting process, the long defrosting cycle, the influence on the freshness of food, the shortening of the food storage time, and the decrease of the food storage quality are solved, the defrosting cycle is greatly reduced, the freshness of food is greatly improved, the food storage time and the storage quality are improved, the user experience is improved, and the intelligence, reliability and availability of the refrigerator dehumidification solution are greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a flow chart of a dehumidification control method for a dual evaporator provided in a specific embodiment of the present invention; Figure 2 is a control logic diagram of a dehumidification control method for a dual evaporator provided in a specific embodiment of the present invention; Figure 3 Schematic diagram of the system composition of a dehumidification control system of a dual evaporator provided in a specific embodiment of the present invention; In the above drawings, there are the following reference numerals: 100, acquisition module; 200, control module; 300, first evaporator; 400, second evaporator. DETAILED DESCRIPTION

[0023] In order to enable those skilled in the art to better understand the technical solution of the present invention, the technical solution of the present invention is clearly and completely described below in conjunction with the accompanying drawings of the present invention. Based on the embodiments in this application, other similar embodiments obtained by ordinary technicians in this field without making creative work should all fall within the scope of protection of this application. In addition, the directional words mentioned in the following embodiments, such as "up", "down", "left", "right", etc., are only reference to the directions of the accompanying drawings. Therefore, the directional words used are used to illustrate rather than limit the invention.

[0024] The present invention will be further described below in conjunction with the accompanying drawings and preferred embodiments.

[0025] See also Figure 1-2 The present invention provides a dehumidification device with two evaporators, comprising: A first evaporator and a second evaporator are sequentially cascaded and arranged in the gas flow direction of the refrigerator return air duct; An acquisition module is used to obtain environmental data inside the refrigerator; The control module is used to control the operating state of the first evaporator according to the environmental data inside the refrigerator to reduce the humidity of the gas flowing through the second evaporator.

[0026] Specifically, the first evaporator is controllably connected to a first control valve, and the first control valve is used to adjust the operating state of the first evaporator under the control of the control module; The second evaporator is controllably connected to a second control valve, and the second control valve is used to adjust the operating state of the second evaporator under the control of the control module.

[0027] Specifically, the acquisition module includes at least one of the following: a first temperature sensor disposed on the second evaporator; A second temperature sensor disposed in the refrigerating chamber; A third temperature sensor is disposed in the freezing chamber.

[0028] Specifically, the device further includes: The fan, the first evaporator and the second evaporator are arranged in the air outlet direction of the fan.

[0029] It can be understood that the present invention obtains the environmental data inside the refrigerator by sequentially arranging the first evaporator and the second evaporator in the gas flow direction of the refrigerator return air duct, and the control valve performs the switching control of the first evaporator according to the environmental data inside the refrigerator. The gas with high humidity first passes through the first evaporator for the first heat exchange, and the first frost is formed on the first evaporator to reduce the humidity in the hot air, and then reaches the main evaporator, and the second heat exchange is performed on the second evaporator, and then the fan blows the cold air into the refrigerator or freezer. It is achieved to reduce the frost on the refrigerator evaporator, extend the defrost cycle, and reduce the impact of defrost heating on the temperature fluctuation of the refrigerator during the defrost cycle. The technical problems existing in the prior art that the frost phenomenon on the evaporator causes the refrigerator refrigeration efficiency to decrease, the temperature fluctuation range of the refrigerator compartment is large and the temperature is high during the defrost process, and the defrost cycle is long, which affects the freshness of food, shortens the food storage time, and causes the quality of food storage to decrease, greatly reduces the defrost cycle, greatly improves the freshness of food, improves the food storage time and storage quality, improves user experience, and greatly improves the intelligence, reliability, and availability of the refrigerator dehumidification solution.

[0030] Please continue reading Figure 1-2 The present invention provides another embodiment, which provides a refrigerator, comprising: The above-mentioned double evaporator dehumidification device.

[0031] It should be noted that the present invention sequentially arranges the first evaporator and the second evaporator in the direction of the gas flow in the return air duct of the refrigerator to obtain the environmental data inside the refrigerator. According to the environmental data inside the refrigerator, the control valve performs the switching control of the first evaporator. The gas with high humidity first passes through the first evaporator for the initial heat exchange, and the first frost is formed on the first evaporator to reduce the humidity in the hot air, and then reaches the main evaporator, and the second heat exchange is performed on the second evaporator, and then the fan blows the cold air into the refrigeration room or the freezer. The frost on the refrigerator evaporator is reduced, the defrost cycle is extended, and the influence of defrost heating on the temperature fluctuation of the refrigerator during the defrost cycle is reduced. The technical problems existing in the prior art that the frost phenomenon on the evaporator leads to the decrease of the refrigerator refrigeration efficiency, the large fluctuation range of the refrigerator compartment temperature during the defrost process and the high temperature, and the long defrost cycle, which affects the freshness of food, shortens the food storage time, and causes the decline of the food storage quality are solved, the defrost cycle is greatly reduced, the freshness of food is greatly improved, the food storage time and storage quality are improved, the user experience is improved, and the intelligence, reliability and availability of the refrigerator dehumidification solution are greatly improved.

[0032] Please continue reading Figure 1-2 The present invention provides another embodiment, which provides a dehumidification control method for a dual evaporator, the dehumidification control method for a dual evaporator comprising: S100: Obtain environmental data inside the refrigerator.

[0033] Specifically, the step of obtaining the environmental data inside the refrigerator includes: Acquiring a first temperature at a preset time interval using a first temperature sensor disposed on the second evaporator; Using a second temperature sensor disposed in the refrigerating chamber to obtain a second temperature at a preset time interval; The third temperature is acquired according to a preset time interval using a third temperature sensor disposed in the freezing chamber.

[0034] It should be noted that before step S100, the following steps are included: A preset time interval, a first preset time, a first preset threshold, a second preset threshold, and a third preset threshold are preset in the control module.

[0035] It can be understood that the preset time interval, the first preset time, the first preset threshold, the second preset threshold, and the third preset threshold can be specifically set according to the actual needs of the user of the present invention. The present invention does not limit the specific values ​​of the preset time interval, the first preset time, the first preset threshold, the second preset threshold, and the third preset threshold, as long as it is applicable to the dehumidification control method of the dual evaporator proposed in the present invention.

[0036] Preferably, the present invention sets the preset time interval to 3 seconds, the present invention sets the first preset time to 3 minutes, the present invention sets the first preset threshold to minus 18 degrees Celsius, the present invention sets the second preset threshold to 2 degrees Celsius, and the present invention sets the third preset threshold to minus 22 degrees Celsius. The above parameters are obtained by the technicians of the present invention through a large number of tests, and can well implement the dehumidification control method of the dual evaporator of the present invention.

[0037] S200: Control the operating state of the first evaporator according to the environmental data inside the refrigerator.

[0038] Specifically, controlling the operating state of the first evaporator according to the environmental data inside the refrigerator includes: S210, after the refrigerator is powered on, controlling the first evaporator to be closed, and controlling the second evaporator to be opened; S220, determining whether the second temperature or the third temperature continues to rise within a first preset time; S230: Control the operating state of the first evaporator according to the judgment result.

[0039] It should be noted that, in a preferred embodiment, the rated operating power of the first evaporator is less than the rated operating power of the second evaporator, which prevents the humid gas from directly frosting on the first evaporator, further reduces the defrosting cycle, further improves the freshness of food, and improves the food storage time and storage quality.

[0040] Specifically, controlling the operating state of the first evaporator according to the judgment result includes: If the second temperature or the third temperature continues to rise within the first preset time, the first control valve is controlled to open, thereby controlling the first evaporator to open; If the second temperature and the third temperature do not continue to rise within the first preset time, the first control valve is kept closed, and the first evaporator is further kept closed.

[0041] It should be noted here that after the refrigerator operates normally, the first evaporator is controlled to be closed and the second evaporator is controlled to be opened, and it is determined whether the temperature of the refrigerator's cold storage room or freezer room continues to rise. If so, while the second evaporator is working, the first control valve is opened to control the first evaporator to start working. The first evaporator and the second evaporator start working at the same time, so that the temperatures of the cold storage room and the freezer room quickly reach the user's preset temperature. At this time, the first control valve is closed and the first evaporator is controlled to stop working. The above scheme further improves the refrigeration efficiency of the present invention and further improves the user experience.

[0042] It is understandable that if the temperature of the refrigerator compartment or freezer compartment does not continue to rise, the first evaporator is kept closed, and natural defrosting is performed at this time until the refrigerator starts the defrosting program and the defrosting heater is turned on. At this time, the first control valve is opened to control the first evaporator to start working, and the first evaporator starts to refrigerate. The gas with high humidity first passes through the small evaporator for the initial heat exchange, and frosts on the small evaporator for the first time, reducing the humidity in the hot air, and then reaches the main evaporator, and performs a second heat exchange on the main evaporator, and then the fan blows the cold air into the refrigerator compartment or freezer compartment. It can reduce the frosting of the refrigerator evaporator, extend the defrosting cycle, and reduce the impact of defrosting heating on the temperature fluctuation of the refrigerator during the defrosting cycle.

[0043] It should be noted here that the continuous temperature rise is determined by the temperature sensors of the refrigerator and freezer respectively. The detection is carried out every 3 seconds for 3 minutes. If the temperature of the refrigerator or freezer rises, it is defined as a continuous temperature rise of the refrigerator or freezer.

[0044] Specifically, if the second temperature or the third temperature continues to rise within the first preset time, controlling the first control valve to open, and then controlling the first evaporator to open, also includes: Obtaining a second temperature of the refrigerating chamber and a third temperature of the freezing chamber at a preset time interval, determining whether the second temperature is less than or equal to a second preset threshold, and determining whether the third temperature is less than or equal to a third preset threshold; If the second temperature is less than or equal to the second preset threshold, and the third temperature is less than or equal to the third preset threshold, the first control valve is controlled to be closed, and the first evaporator is further controlled to be closed; If the second temperature is greater than the second preset threshold, or the third temperature is greater than the third preset threshold, the first control valve is kept open, thereby keeping the first evaporator running continuously.

[0045] Specifically, if the second temperature and the third temperature do not continue to rise within the first preset time, keeping the first control valve closed, and then keeping the first evaporator closed, also includes: Determine whether the refrigerator has started to defrost; If defrosting does not start, the first control valve is kept closed, thereby keeping the first evaporator closed; If defrosting starts, the first control valve is controlled to open, and then the first evaporator is controlled to open.

[0046] Specifically, if defrosting starts, controlling the first control valve to open, and then controlling the first evaporator to open, also includes: Determine whether the refrigerator stops defrosting; If so, determining whether the second temperature is less than or equal to the second preset threshold value within the first preset time, and determining whether the third temperature is less than or equal to the third preset threshold value within the first preset time; If the second temperature is less than or equal to the second preset threshold value within the first preset time, and the third temperature is less than or equal to the third preset threshold value within the first preset time, the first control valve is controlled to be closed, and the first evaporator is further controlled to be closed; If the second temperature is not less than or equal to the second preset threshold value within the first preset time, or the third temperature is not less than or equal to the third preset threshold value within the first preset time, the first control valve is kept open, and the first evaporator is kept open.

[0047] Specifically, the step of determining whether the refrigerator has started to defrost includes: Obtaining the operating status data of the defrost heater provided in the refrigerator, and then determining whether the defrost heater in the refrigerator is turned on; If the defrost heater in the refrigerator is turned on, it is determined that the refrigerator starts to defrost; If the defrost heater in the refrigerator is not turned on or stops running, it is determined that the refrigerator has not started defrosting or has stopped defrosting.

[0048] Specifically, the step of determining whether the refrigerator stops defrosting includes: Determining whether the first temperature data is greater than or equal to a first preset threshold; If so, it is determined that the refrigerator stops defrosting; If not, it is determined that the refrigerator has not stopped defrosting.

[0049] It is understandable that the start of the defrost stage of the refrigerator is determined by whether the defrost heater is turned on or not, and the end of the defrost stage is determined by whether the first temperature sensor on the second evaporator of the refrigerator reaches the preset temperature input by the user. The defrost ends when it is greater than the preset temperature. After the defrost stage ends, the first evaporator will be turned off only when the temperature of the refrigerator's refrigerator and freezer compartment is maintained at the user's preset temperature. Otherwise, the first evaporator of the refrigerator continues to operate until the temperature is maintained at the user's preset temperature. The performance and specifications of the first evaporator must be less than those of the second evaporator.

[0050] It should be noted that the present invention sequentially arranges the first evaporator and the second evaporator in the direction of the gas flow in the return air duct of the refrigerator to obtain the environmental data inside the refrigerator. According to the environmental data inside the refrigerator, the control valve performs the switching control of the first evaporator. The gas with high humidity first passes through the first evaporator for the initial heat exchange, and the first frost is formed on the first evaporator to reduce the humidity in the hot air, and then reaches the main evaporator, and the second heat exchange is performed on the second evaporator, and then the fan blows the cold air into the refrigeration room or the freezer. The frost on the refrigerator evaporator is reduced, the defrost cycle is extended, and the influence of defrost heating on the temperature fluctuation of the refrigerator during the defrost cycle is reduced. The technical problems existing in the prior art that the frost phenomenon on the evaporator leads to the decrease of the refrigerator refrigeration efficiency, the large fluctuation range of the refrigerator compartment temperature during the defrost process and the high temperature, and the long defrost cycle, which affects the freshness of food, shortens the food storage time, and causes the decline of the food storage quality are solved, the defrost cycle is greatly reduced, the freshness of food is greatly improved, the food storage time and storage quality are improved, the user experience is improved, and the intelligence, reliability and availability of the refrigerator dehumidification solution are greatly improved.

[0051] See also Figure 3 The present invention provides another embodiment, which provides a dual evaporator dehumidification control system, the dual evaporator dehumidification control system comprising: A first evaporator 300 and a second evaporator 400 are sequentially arranged in the gas flow direction of the refrigerator return air duct; The first evaporator 300 is used to reduce the humidity of the gas flowing through the second evaporator 400 during operation; An acquisition module 100 is used to acquire environmental data inside the refrigerator; The control module 200 is used to control the operating state of the first evaporator 100 according to the environmental data inside the refrigerator.

[0052] It can be understood that the present invention obtains the environmental data inside the refrigerator by sequentially arranging the first evaporator and the second evaporator in the gas flow direction of the refrigerator return air duct, and the control valve performs the switching control of the first evaporator according to the environmental data inside the refrigerator. The gas with high humidity first passes through the first evaporator for the first heat exchange, and the first frost is formed on the first evaporator to reduce the humidity in the hot air, and then reaches the main evaporator, and the second heat exchange is performed on the second evaporator, and then the fan blows the cold air into the refrigerator or freezer. It is achieved to reduce the frost on the refrigerator evaporator, extend the defrost cycle, and reduce the impact of defrost heating on the temperature fluctuation of the refrigerator during the defrost cycle. The technical problems existing in the prior art that the frost phenomenon on the evaporator causes the refrigerator refrigeration efficiency to decrease, the temperature fluctuation range of the refrigerator compartment is large and the temperature is high during the defrost process, and the defrost cycle is long, which affects the freshness of food, shortens the food storage time, and causes the quality of food storage to decrease, greatly reduces the defrost cycle, greatly improves the freshness of food, improves the food storage time and storage quality, improves user experience, and greatly improves the intelligence, reliability, and availability of the refrigerator dehumidification solution.

[0053] In a preferred embodiment, the present application further provides an electronic device, the electronic device comprising: A memory; and a processor, wherein the memory stores computer-readable instructions, and when the computer-readable instructions are executed by the processor, the dehumidification control method of the dual evaporator is implemented. The computer device can be broadly a server, a terminal, or any other electronic device with necessary computing and / or processing capabilities. In one embodiment, the computer device may include a processor, a memory, a network interface, a communication interface, etc. connected via a system bus. The processor of the computer device can be used to provide necessary computing, processing and / or control capabilities. The memory of the computer device may include a non-volatile storage medium and an internal memory. An operating system, a computer program, etc. may be stored in or on the non-volatile storage medium. The internal memory can provide an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The network interface and the communication interface of the computer device can be used to connect and communicate with external devices through a network. When the computer program is executed by the processor, the steps of the method of the present invention are performed.

[0054] The present invention may be implemented as a computer-readable storage medium having a computer program stored thereon, which causes the steps of the method of an embodiment of the present invention to be executed when executed by a processor. In one embodiment, the computer program is distributed on a plurality of computer devices or processors coupled to a network so that the computer program is stored, accessed and executed in a distributed manner by one or more computer devices or processors. A single method step / operation, or two or more method steps / operations, may be performed by a single computer device or processor or by two or more computer devices or processors. One or more method steps / operations may be performed by one or more computer devices or processors, and one or more other method steps / operations may be performed by one or more other computer devices or processors. One or more computer devices or processors may perform a single method step / operation, or perform two or more method steps / operations.

[0055] It will be appreciated by a person skilled in the art that the method steps of the present invention may be performed by instructing related hardware such as a computer device or a processor through a computer program, and the computer program may be stored in a non-temporary computer-readable storage medium, which causes the steps of the present invention to be performed when the computer program is executed. Depending on the circumstances, any reference to memory, storage, database, or other media herein may include non-volatile and / or volatile memory. Examples of non-volatile memory include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), flash memory, magnetic tape, floppy disk, magneto-optical data storage device, optical data storage device, hard disk, solid state disk, etc. Examples of volatile memory include random access memory (RAM), external cache memory, etc.

[0056] It should be noted that the present invention sequentially arranges the first evaporator and the second evaporator in the direction of the gas flow in the return air duct of the refrigerator to obtain the environmental data inside the refrigerator. According to the environmental data inside the refrigerator, the control valve performs the switching control of the first evaporator. The gas with high humidity first passes through the first evaporator for the initial heat exchange, and the first frost is formed on the first evaporator to reduce the humidity in the hot air, and then reaches the main evaporator, and the second heat exchange is performed on the second evaporator, and then the fan blows the cold air into the refrigeration room or the freezer. The frost on the refrigerator evaporator is reduced, the defrost cycle is extended, and the influence of defrost heating on the temperature fluctuation of the refrigerator during the defrost cycle is reduced. The technical problems existing in the prior art that the frost phenomenon on the evaporator leads to the decrease of the refrigerator refrigeration efficiency, the large fluctuation range of the refrigerator compartment temperature during the defrost process and the high temperature, and the long defrost cycle, which affects the freshness of food, shortens the food storage time, and causes the decline of the food storage quality are solved, the defrost cycle is greatly reduced, the freshness of food is greatly improved, the food storage time and storage quality are improved, the user experience is improved, and the intelligence, reliability and availability of the refrigerator dehumidification solution are greatly improved.

[0057] The various technical features described above can be combined arbitrarily. Although all possible combinations of these technical features are not described, any combination of these technical features should be considered to be covered by this specification as long as there is no contradiction in such combination.

[0058] The specific implementation of the present invention described above does not constitute a limitation on the protection scope of the present invention. Any other corresponding changes and modifications made based on the technical concept of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A dehumidification device with two evaporators, characterized in that: The device comprises: A first evaporator and a second evaporator are sequentially cascaded and arranged in the gas flow direction of the refrigerator return air duct; An acquisition module is used to obtain environmental data inside the refrigerator; The control module is used to control the operating state of the first evaporator according to the environmental data inside the refrigerator to reduce the humidity of the gas flowing through the second evaporator.

2. The dehumidification device with two evaporators according to claim 1, characterized in that: The first evaporator is controllably connected to a first control valve, and the first control valve is used to adjust the operating state of the first evaporator under the control of the control module; The second evaporator is controllably connected to a second control valve, and the second control valve is used to adjust the operating state of the second evaporator under the control of the control module.

3. The dehumidification device with two evaporators according to claim 1, characterized in that: The acquisition module includes at least one of the following: a first temperature sensor disposed on the second evaporator; A second temperature sensor disposed in the refrigerating chamber; A third temperature sensor is disposed in the freezing chamber.

4. The dehumidification device with two evaporators according to claim 1, characterized in that: The device also includes: The fan, the first evaporator and the second evaporator are arranged in the air outlet direction of the fan.

5. A refrigerator, comprising: A dehumidification device with a double evaporator as claimed in any one of claims 1 to 4.

6. A dehumidification control method for a dual evaporator, characterized in that: The method comprises: S100, obtaining environmental data inside the refrigerator; S200: Control the operating state of the first evaporator according to the environmental data inside the refrigerator.

7. The dehumidification control method of the dual evaporator according to claim 6, characterized in that: The step of obtaining the environmental data inside the refrigerator includes: Acquiring a first temperature at a preset time interval using a first temperature sensor disposed on the second evaporator; Using a second temperature sensor disposed in the refrigerating chamber to obtain a second temperature at a preset time interval; The third temperature is acquired according to a preset time interval using a third temperature sensor disposed in the freezing chamber.

8. The dehumidification control method of the dual evaporator according to claim 7, characterized in that: The step of controlling the operating state of the first evaporator according to the environmental data inside the refrigerator includes: S210, after the refrigerator is powered on, controlling the first evaporator to be closed, and controlling the second evaporator to be opened; S220, determining whether the second temperature or the third temperature continues to rise within a first preset time; S230: Control the operating state of the first evaporator according to the judgment result.

9. The dehumidification control method of the dual evaporator according to claim 8, characterized in that: The controlling the operating state of the first evaporator according to the judgment result includes: If the second temperature or the third temperature continues to rise within the first preset time, the first control valve is controlled to open, thereby controlling the first evaporator to open; If the second temperature and the third temperature do not continue to rise within the first preset time, the first control valve is kept closed, and the first evaporator is further kept closed.

10. The dehumidification control method of a dual evaporator according to claim 9, characterized in that: If the second temperature or the third temperature continues to rise within the first preset time, controlling the first control valve to open, and then controlling the first evaporator to open, further includes: Obtaining a second temperature of the refrigerator compartment and a third temperature of the freezer compartment at a preset time interval, determining whether the second temperature is less than or equal to a second preset threshold, and determining whether the third temperature is less than or equal to a third preset threshold; If the second temperature is less than or equal to the second preset threshold, and the third temperature is less than or equal to the third preset threshold, the first control valve is controlled to be closed, and the first evaporator is further controlled to be closed; If the second temperature is greater than the second preset threshold, or the third temperature is greater than the third preset threshold, the first control valve is kept open, thereby keeping the first evaporator running continuously.

11. The dehumidification control method of a dual evaporator according to claim 9, characterized in that: If the second temperature and the third temperature do not continue to rise within the first preset time, keeping the first control valve closed, and then keeping the first evaporator closed, also includes: Determine whether the refrigerator has started to defrost; If defrosting does not start, the first control valve is kept closed, thereby keeping the first evaporator closed; If defrosting starts, the first control valve is controlled to open, and then the first evaporator is controlled to open.

12. The dehumidification control method of the dual evaporator according to claim 11, characterized in that: If defrosting starts, controlling the first control valve to open, and then controlling the first evaporator to open, also includes: Determine whether the refrigerator stops defrosting; If so, determining whether the second temperature is less than or equal to the second preset threshold value within the first preset time, and determining whether the third temperature is less than or equal to the third preset threshold value within the first preset time; If the second temperature is less than or equal to the second preset threshold value within the first preset time, and the third temperature is less than or equal to the third preset threshold value within the first preset time, the first control valve is controlled to be closed, and the first evaporator is further controlled to be closed; If the second temperature is not less than or equal to the second preset threshold value within the first preset time, or the third temperature is not less than or equal to the third preset threshold value within the first preset time, the first control valve is kept open, and the first evaporator is kept open.

13. The dehumidification control method of a dual evaporator according to claim 11, characterized in that: The step of judging whether the refrigerator has started to defrost comprises: Obtaining the operating status data of the defrost heater provided in the refrigerator, and then determining whether the defrost heater in the refrigerator is turned on; If the defrost heater in the refrigerator is turned on, it is determined that the refrigerator starts to defrost; If the defrost heater in the refrigerator is not turned on or stops running, it is determined that the refrigerator has not started defrosting or has stopped defrosting.

14. The dehumidification control method of a dual evaporator according to claim 12, characterized in that: The step of judging whether the refrigerator stops defrosting comprises: Determining whether the first temperature data is greater than or equal to a first preset threshold; If so, it is determined that the refrigerator stops defrosting; If not, it is determined that the refrigerator has not stopped defrosting.

15. A dual evaporator dehumidification control system, characterized in that: include: A first evaporator and a second evaporator are sequentially cascaded and arranged in the gas flow direction of the refrigerator return air duct; An acquisition module is used to obtain environmental data inside the refrigerator; The control module is used to control the operating state of the first evaporator according to the environmental data inside the refrigerator to reduce the humidity of the gas flowing through the second evaporator.

16. An electronic device, characterized in that: include: Memory; and a processor, wherein the memory stores computer-readable instructions, and when the computer-readable instructions are executed by the processor, the dehumidification control method for the dual evaporator according to any one of claims 6 to 14 is implemented.

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