Air-cooled refrigerator and control method thereof

Abstract

The application provides a wind-cooled refrigerator and a control method thereof, the wind-cooled refrigerator comprising a chamber, a door body, a refrigeration system, a controller, a temperature sensing device and an anti-freezing device; the controller is electrically connected with the refrigeration system, the temperature sensing device and the anti-freezing device respectively; the temperature sensing device is a temperature sensor; the anti-freezing device comprises an anti-condensation pipe main stem, an anti-condensation pipe branch stem and a valve, and is fixed between an inner container and a shell of the refrigerator. The application utilizes the temperature sensing device to sense the temperature of the water pipe, displays through a water pipe temperature indicator, when the temperature of the water pipe is greater than a preset water pipe temperature, the water pipe temperature indicator is green, when the temperature of the water pipe is less than the preset water pipe temperature, the water pipe temperature indicator is red, the controller controls the valve of the anti-condensation pipe branch stem to open, the refrigerant flows in the anti-condensation pipe branch stem, the temperature of the surface of the water pipe is increased, and the temperature of the water in the water pipe is increased. It is intelligent, reduces the humidity in the refrigeration chamber, and improves the service life of the refrigerator.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of household appliances, in particular to a forced air cooling refrigerator and a control method thereof. BACKGROUND

[0002] With the development of technology and the improvement of people's living standards, the refrigerator has become a necessity for every family. At present, the refrigerator is mostly a forced air cooling refrigerator, which is a refrigerator that uses a fan to circulate air to achieve cooling. In recent years, people's health awareness has gradually improved, and the demand for food preservation has also increased. As the most commonly used household appliance for food storage, food preservation has become a technical demand that needs to be solved in the refrigerator field.

[0003] The direct cooling refrigerator is a traditional refrigerator design, also known as a single-chamber refrigerator or a compressor-type refrigerator. Its refrigeration method is relatively simple, mainly through a compressor to realize a refrigeration cycle, and the refrigerant is circulated in the freezer room, while the cold storage room maintains a lower temperature through natural convection. The direct cooling refrigerator has a high cost performance and a low failure rate, so it has a high retention rate.

[0004] The existing direct cooling refrigerator has high energy efficiency and good heat preservation effect. The water pipe is between the freeze tank and the cabinet shell. If the water pipe is foamed and extruded, the water pipe will be closer to the freeze tank than the reserved size during assembly, which means that the condensed water is easy to freeze when it flows down. The defrosting time of the direct cooling refrigerator is designed for the defrosting of the refrigerator, and the problem of water pipe freezing is not considered, which means that when the water pipe freezes, the user may not be able to perceive it in time. If the water volume is large, it cannot be discharged outside the refrigerator through the water pipe, and then it will accumulate in the cold storage room, which will provide a humid environment for bacteria and accelerate the deterioration of food, which will increase energy consumption, and the refrigerator needs to work continuously to remove excess moisture, which will cause the electrical components to be damp, thereby causing short circuits or other electrical faults, and even damage to the compressor and other key components. The refrigerator in a humid environment is more prone to failure, which shortens the overall service life of the refrigerator. SUMMARY

[0005] The present application provides a forced air cooling refrigerator and a control method thereof to solve the problem that the drain pipe of the direct cooling refrigerator is discharged from the cold storage room to the freezer room, and the drain pipe is close to the freezer cabinet, which is prone to pipe freezing, and the freezing of the water pipe is not easy to detect, thereby reducing the service life of the refrigerator.

[0006] In a first aspect, the present application provides a forced air cooling refrigerator, which comprises:

[0007] a chamber, a door body, a cabinet, a refrigeration system, a controller, a temperature sensing device, and an anti-freezing device;

[0008] The refrigeration system, the controller, the temperature sensing device and the anti-freezing device are arranged in the cabinet; the door body is assembled on the cabinet; the controller is electrically connected with the refrigeration system, the temperature sensing device and the anti-freezing device respectively; the temperature sensing device is a temperature sensor.

[0009] The refrigeration system comprises an evaporator, a compressor, a condenser and a capillary tube.

[0010] The refrigerator further comprises an inner container and a shell.

[0011] The anti-freezing device comprises an anti-freezing pipe main stem, an anti-freezing pipe branch stem and a valve, and is fixed between the inner container and the shell of the refrigerator.

[0012] In some possible implementation manners, when the temperature of the water pipe is greater than the preset water pipe temperature, the valve of the anti-freezing pipe main stem is opened to enable the refrigerant to pass through the anti-freezing pipe main stem; and when the temperature of the water pipe is less than the preset water pipe temperature, the valve of the anti-freezing pipe branch stem is opened to enable the refrigerant to pass through the anti-freezing pipe branch stem.

[0013] In some possible implementation manners, the preset water pipe temperature is 1.5-3℃.

[0014] In some possible implementation manners, the door body of the refrigerator is further provided with a first temperature indicating lamp and a second temperature indicating lamp, the first temperature indicating lamp is started when the temperature of the water pipe is greater than the preset water pipe temperature, and the second temperature indicating lamp is started when the temperature of the water pipe is less than the preset water pipe temperature.

[0015] In some possible implementation manners, the temperature sensing device comprises a refrigeration temperature sensor, a refrigeration evaporation sensor, a freezing temperature sensor, an environment temperature sensor and a water pipe temperature sensor; the refrigeration temperature sensor and the refrigeration evaporation sensor are located in the first compartment, the freezing temperature sensor is located in the second compartment, the environment temperature sensor is located on the top of the cabinet of the refrigerator, and the water pipe temperature sensor is located on the water pipe.

[0016] In some possible implementation manners, the water pipe temperature sensor is arranged at a distance of 300-500mm from the outlet of the water pipe.

[0017] In a second aspect, the application provides a control method of the air-cooled refrigerator, and the air-cooled refrigerator is the air-cooled refrigerator of the first aspect; the method comprises the following steps.

[0018] Obtaining the temperature of the water pipe;

[0019] When the temperature of the water pipe is greater than the preset water pipe temperature, the valve of the anti-freezing pipe main stem is controlled to be opened to enable the refrigerant to pass through the anti-freezing pipe main stem;

[0020] When the water pipe temperature is less than the preset water pipe temperature, a valve of the antifreeze pipe branch is opened to allow the refrigerant to pass through the antifreeze pipe branch.

[0021] In some possible implementation manners, the method further includes:

[0022] At each power-on, the controller detects the compressor hardware delay protection circuit, and starts at a stop time greater than or equal to 5 min;

[0023] The compressor starts when the refrigeration evaporation sensor and the refrigeration temperature sensor are higher than the start point.

[0024] The compressor stops when the temperature of the refrigeration temperature sensor is lower than the stop point or the continuous operation time of the compressor is greater than or equal to 240 min.

[0025] In some possible implementation manners, the method further includes:

[0026] When the water pipe temperature is greater than the preset water pipe temperature, the first temperature indicator light is started and displays a first color.

[0027] When the water pipe temperature is less than the preset water pipe temperature, the second temperature indicator light is started and displays a second color, wherein the first color is different from the second color.

[0028] In some possible implementation manners, the method further includes:

[0029] When the door of the chamber is in an open state, the LED light of the chamber is turned on.

[0030] When the door opening time of the chamber exceeds a preset time, all indicator lights on the refrigerator flash at a preset frequency and send an alarm.

[0031] From the above, the application provides a wind-cooled refrigerator and a control method thereof. The wind-cooled refrigerator comprises a chamber, a door body, a refrigeration system, a controller, a temperature sensing device, and an anti-freezing device. The controller is electrically connected with the refrigeration system, the temperature sensing device, and the anti-freezing device. The temperature sensing device is a temperature sensor. The refrigeration system comprises an evaporator, a compressor, a condenser, and a capillary tube. The refrigerator further comprises an inner container and a shell. The anti-freezing device comprises an anti-freezing pipe main stem, an anti-freezing pipe branch stem, and a valve. The anti-freezing device is fixed between the inner container and the shell of the refrigerator. The application uses the temperature sensing device to sense the temperature of the water pipe. The temperature of the water pipe is displayed through a water pipe temperature indicator. When the temperature of the water pipe is greater than a preset water pipe temperature, the water pipe temperature indicator is green. When the temperature of the water pipe is less than the preset water pipe temperature, the water pipe temperature indicator is red. The controller controls the valve of the anti-freezing pipe branch stem to open, and the refrigerant flows in the anti-freezing pipe branch stem, so as to increase the temperature of the surface of the water pipe and the temperature of the water in the water pipe. The application has high intelligence, reduces the humidity in the refrigeration chamber, and thus prolongs the service life of the refrigerator. BRIEF DESCRIPTION OF DRAWINGS

[0032] In order to more clearly illustrate the technical solutions of the application, the drawings needed in the embodiments will be briefly introduced below. Obviously, other drawings can also be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0033] Figure 1 The wind-cooled refrigerator control method flowchart provided by the embodiment of the application Figure One ;

[0034] Figure 2 The wind-cooled refrigerator control method flowchart provided by the embodiment of the application Figure Two ;

[0035] Figure 3 The refrigeration system schematic diagram in the wind-cooled refrigerator provided by the embodiment of the application

[0036] Figure 4 The front view of the wind-cooled refrigerator provided by the embodiment of the application

[0037] Figure 5 The side view of the wind-cooled refrigerator provided by the embodiment of the application

[0038] Figure 6 The anti-freezing pipe front view provided by the embodiment of the application Figure One ;

[0039] Figure 7 The anti-freezing pipe front view provided by the embodiment of the application Figure Two ;

[0040] Figure 8 The anti-freezing pipe side view provided by the embodiment of the application

[0041] Figure 9 An overhead view of the anti-condensation pipe provided by the embodiments of the present application;

[0042] Figure 10 A rear view of the air-cooled refrigerator provided by the embodiments of the present application.

[0043] Illustration:

[0044] 1 - refrigeration chamber, 2 - freezing chamber, 3 - main control board box, 4 - gear, 5 - SET button, 6 - water pipe temperature indicator light, 7 - refrigeration evaporation temperature sensor, 8 - refrigeration temperature sensor, 9 - freezing temperature sensor, 10 - ambient temperature sensor, 11 - water pipe temperature sensor, 12 - anti-condensation pipe near the freezing door end, 13 - anti-condensation pipe near the water pipe end, 14 - anti-condensation pipe branch, 15 - anti-condensation pipe main stem, 16 - anti-condensation pipe branch valve, 17 - anti-condensation pipe main stem valve, 18 - anti-condensation pipe, 19 - water pipe, 20 - compressor. DETAILED DESCRIPTION

[0045] The embodiments will be described in detail below with reference to the drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following embodiments are not meant to represent all implementations consistent with the present application. Rather, they are merely examples of systems and methods consistent with some aspects of the present application as detailed in the appended claims.

[0046] With the development of technology and the improvement of people's living standards, the refrigerator has become a necessity for every family. At present, the refrigerator is mostly air-cooled refrigerator, which is a refrigerator that uses a fan to circulate air to achieve cooling. In recent years, people's health consciousness has gradually improved, and the demand for food preservation has also increased. As the most commonly used household appliance for food storage, food preservation and storage have become a technical demand that needs to be solved in the field of refrigerators.

[0047] Direct-cooled refrigerator is a traditional refrigerator design, also known as single-chamber refrigerator or compressor refrigerator. Its refrigeration method is relatively simple, mainly through a compressor to realize refrigeration cycle, and the refrigerant is circulated in the freezing chamber, while the refrigeration chamber is kept at a lower temperature through natural convection. Direct-cooled refrigerator has a high holding rate due to its high cost performance and low failure rate.

[0048] The existing direct-cooling refrigerator has high energy efficiency and good heat preservation effect. The water pipe is between the freezing tank and the box shell. If the foaming extrusion water pipe is used, the water pipe will be closer to the freezing tank than the reserved size during assembly, which means that the condensate water is easy to freeze when it flows down. The direct-cooling refrigerator has a defrosting time, which is designed for the refrigeration defrosting of the refrigerator and does not consider the water pipe freezing problem, which means that when the water pipe is frozen, the user may not be able to perceive it in time. If the water volume is large, it cannot be discharged outside the refrigerator through the water pipe, and then it will accumulate in the refrigeration chamber, which will provide a humid environment for bacteria and accelerate the deterioration of food, which will increase the energy consumption of the refrigerator. The refrigerator needs to work continuously to remove excess moisture, which will cause the electrical components to be damp, thereby causing short circuits or other electrical faults, and even damage to the compressor and other key components. The refrigerator in a humid environment is more prone to failure, which shortens the overall service life of the refrigerator.

[0049] Based on this, the application provides a direct-cooling refrigerator and a control method thereof. The application uses a temperature sensing device to sense the temperature of the water pipe. When the temperature of the water pipe is greater than the preset water pipe temperature, the controller controls the valve of the anti-freezing pipe main stem to open, and the refrigerant flows in the anti-freezing pipe main stem. When the temperature of the water pipe is less than the preset water pipe temperature, the controller controls the valve of the anti-freezing pipe branch stem to open, and the refrigerant flows in the anti-freezing pipe branch stem, so as to increase the temperature of the surface of the water pipe and then increase the temperature of the water in the water pipe.

[0050] In some embodiments, the application provides a direct-cooling refrigerator, which comprises:

[0051] a chamber, a door body, a box body, a refrigeration system, a controller, a temperature sensing device, and an anti-freezing device;

[0052] The refrigeration system, the controller, the temperature sensing device, and the anti-freezing device are arranged in the box body. The door body is assembled on the box body.

[0053] The controller is electrically connected with the refrigeration system, the temperature sensing device, and the anti-freezing device, respectively. The temperature sensing device is a temperature sensor.

[0054] The refrigeration system comprises an evaporator, a compressor, a condenser, and a capillary tube.

[0055] The refrigerator further comprises an inner tank and a shell.

[0056] The anti-freezing device comprises an anti-freezing pipe main stem, an anti-freezing pipe branch stem, and a valve. The anti-freezing device is fixed between the inner tank and the shell of the refrigerator.

[0057] The refrigeration system comprises an evaporator, a compressor, a condenser, a capillary tube and the like. The evaporator is a heat absorption component, which evaporates the low-temperature and low-pressure liquid from the capillary tube into low-temperature steam through heat exchange with the external environment and is installed at the back of the refrigerator freezer and refrigerator; the compressor is the heart of the refrigerator refrigeration system and is a driven fluid machine for lifting low-pressure gas into high-pressure gas. The low-temperature steam from the evaporator is compressed into high-temperature and high-pressure gas, and the continuous flow of refrigerant liquid and steam is completed by the action of the compressor; the condenser is a heat dissipation component, which cools the high-temperature and high-pressure gas from the compressor into high-temperature and high-pressure liquid through heat exchange with the external environment; and the capillary tube is a resistance component, which changes the high-temperature and high-pressure liquid into low-temperature and low-pressure liquid through resistance throttling. The compressor is a variable frequency compressor, the frequency of which can be adjusted. According to the signals given by the control module, the compressor is controlled to start and stop, so as to control the temperature. The variable frequency compressor for direct-cooling refrigerators reduces the power consumption of the refrigerator and has excellent energy-saving effect.

[0058] In some embodiments, when the water pipe temperature is greater than the preset water pipe temperature, the valve of the anti-freezing pipe main stem is opened to allow the refrigerant to pass through the anti-freezing pipe main stem; and when the water pipe temperature is less than the preset water pipe temperature, the valve of the anti-freezing pipe branch stem is opened to allow the refrigerant to pass through the anti-freezing pipe branch stem.

[0059] In some embodiments, the preset water pipe temperature is 1.5-3°C.

[0060] Taking 1.5°C as the preset water pipe temperature, when the water pipe temperature is greater than 1.5°C, the refrigerant passes through the anti-freezing pipe main stem; when the water pipe temperature is less than 1.5°C, the refrigerant passes through the anti-freezing pipe branch stem; and the anti-freezing pipe branch stem is close to the water pipe to increase the surface temperature of the water pipe.

[0061] In some embodiments, the door body of the refrigerator is further provided with a first temperature indicating lamp and a second temperature indicating lamp. The first temperature indicating lamp is started when the water pipe temperature is greater than the preset water pipe temperature, and the second temperature indicating lamp is started when the water pipe temperature is less than the preset water pipe temperature.

[0062] In some embodiments, the temperature sensing device comprises a refrigeration temperature sensor, a refrigeration evaporation sensor, a freezing temperature sensor, an environment temperature sensor and a water pipe temperature sensor. The refrigeration temperature sensor and the refrigeration evaporation sensor are located in the first chamber, the freezing temperature sensor is located in the second chamber, the environment temperature sensor is located at the top of the refrigerator body, and the water pipe temperature sensor is located on the water pipe.

[0063] The temperature sensing device comprises a plurality of temperature sensors, such as a refrigeration temperature sensor, a refrigeration evaporation sensor, a freezing temperature sensor and an environment temperature sensor, and a water pipe temperature sensor, which accurately collect the temperatures of the refrigerator refrigeration and freezing chambers and the water pipe and transmit the collected signals to the controller.

[0064] In some embodiments, the water pipe temperature sensor is arranged 300-500mm away from the water pipe outlet.

[0065] In some embodiments, the present application provides a control method of an air-cooled refrigerator, the air-cooled refrigerator being the air-cooled refrigerator of the above embodiments; the method comprising:

[0066] acquiring the temperature of the water pipe;

[0067] when the temperature of the water pipe is greater than a preset water pipe temperature, controlling the valve of the main stem of the freeze-proof pipe to open, so that the refrigerant passes through the main stem of the freeze-proof pipe;

[0068] when the temperature of the water pipe is less than the preset water pipe temperature, controlling the valve of the branch stem of the freeze-proof pipe to open, so that the refrigerant passes through the branch stem of the freeze-proof pipe.

[0069] In some embodiments, the method further comprises:

[0070] at each power-on, the controller detects the compressor hardware delay protection circuit, and starts when the shutdown time is greater than or equal to 5min;

[0071] the compressor starts when the refrigeration evaporation sensor and the refrigeration temperature sensor are higher than the start point;

[0072] the compressor stops when the temperature of the refrigeration temperature sensor is lower than the shutdown point or the continuous running time of the compressor is greater than or equal to 240min.

[0073] In some embodiments, the method further comprises:

[0074] when the temperature of the water pipe is greater than the preset water pipe temperature, the first temperature indicating light is started and displays a first color;

[0075] when the temperature of the water pipe is less than the preset water pipe temperature, the second temperature indicating light is started and displays a second color, wherein the first color is different from the second color.

[0076] when the temperature of the water pipe is <1.5℃, the first temperature indicating light is bright red, and when the temperature of the water pipe is >1.5℃, the second temperature indicating light is bright green.

[0077] In some embodiments, the method further comprises:

[0078] when the door of the compartment is in an open state, the LED light of the compartment is turned on;

[0079] when the door opening time of the compartment exceeds a preset time, all the indicating lights on the refrigerator flash at a preset frequency and send an alarm.

[0080] When the door switch of the chamber is on, the LED light remains on, and when the door switch of the chamber is off, the LED light is off; if the door is opened for more than 3 minutes, all the gear indicator lights will flash at a frequency of 1 Hz (i.e. on for 0.5 s and off for 0.5 s) to alarm, and in the alarm state, closing the door or first key operation is used to cancel the alarm (key operation will continue to alarm after 3 minutes).

[0081] The application uses a temperature sensing device to sense the temperature of the water pipe, and displays the temperature of the water pipe through a water pipe temperature indicator. When the temperature of the water pipe is greater than a preset water pipe temperature, the water pipe temperature indicator is green; when the temperature of the water pipe is less than the preset water pipe temperature, the water pipe temperature indicator is red. The controller controls the valve of the anti-condensation pipe branch to open, and the refrigerant in the anti-condensation pipe branch flows to increase the temperature of the surface of the water pipe and the temperature of the water in the water pipe. It has high intelligence, reduces the humidity in the refrigeration chamber, and thus improves the service life of the refrigerator.

[0082] Embodiment

[0083] Reference Figures 1 to 10 A forced air cooling refrigerator is provided for the embodiment, which comprises 1 refrigeration chamber, 2 freezing chamber, 3 main control board box, 4 gear, 5 "SET button", 6 water pipe temperature indicator, 7 refrigeration evaporation temperature sensor, 8 refrigeration temperature sensor, 9 freezing temperature sensor, 10 ambient temperature sensor, 11 water pipe temperature sensor, 12 anti-condensation pipe near freezing door end, 13 anti-condensation pipe near water pipe end, 14 anti-condensation pipe branch, 15 anti-condensation pipe main stem, 16 anti-condensation pipe branch valve, 17 anti-condensation pipe main stem valve, 18 anti-condensation pipe, 19 water pipe, 20 compressor. The main control board box is provided with a controller to control the start and stop and speed of the compressor, the gear is located on the main control board box, the "SET button" controls the gear of the controller, the water pipe temperature indicator is located in the refrigeration chamber, the refrigeration temperature sensor and the refrigeration evaporation temperature sensor are located in the refrigeration chamber, the freezing temperature sensor is located in the freezing chamber, the ambient temperature sensor is located at the top of the box, and the water pipe temperature sensor is located on the water pipe. When the water pipe temperature is less than 1.5°C, the anti-condensation pipe main stem valve is closed, the anti-condensation pipe branch valve is opened, and the anti-condensation pipe branch is used. When the water pipe temperature is greater than 1.5°C, the anti-condensation pipe branch valve is closed, the anti-condensation pipe main stem valve is opened, and the anti-condensation pipe main stem is used.

[0084] The technical logic comprises the following steps:

[0085] Step 1: Run the normal refrigeration mode. In this mode, the cold energy generated by the refrigeration system is delivered to the refrigeration chamber 1 and the freezing chamber 2. Run step 2.

[0086] Step 2: The controller controls the compressor 19 to start.

[0087] Step 3: running the anti-freezing device. When the water pipe temperature sensor 11 > 1.5℃, the water pipe temperature indicator light 6 is green, the anti-freezing pipe branch stem valve 16 is closed, the anti-freezing pipe main stem valve 17 is opened, the refrigerant goes through the main stem 15, reaches the anti-freezing pipe near the freezing door end 12, and then returns to the compressor 19; when the water pipe temperature sensor 11 < 1.5℃, the water pipe temperature indicator light 6 is red, the anti-freezing pipe main stem valve 17 is closed, the anti-freezing pipe branch stem valve 16 is opened, the refrigerant goes through the branch stem 14, reaches the anti-freezing pipe near the freezing door end 12, and then returns to the anti-freezing pipe near the water pipe end 13, and then returns to the compressor 20. Running step 4.

[0088] Step 4: running the temperature sensing module. When the refrigeration temperature sensor 8, the refrigeration evaporating temperature sensor 7, the freezing temperature sensor 9, the environment temperature sensor 10, and the water pipe temperature sensor 11 transmit the sensed temperature to the control module, the control module determines whether to change the compressor speed according to the temperature.

[0089] As can be seen from the above embodiment, the application provides an air-cooled refrigerator and a control method thereof. The air-cooled refrigerator comprises a chamber, a door body, a refrigeration system, a controller, a temperature sensing device, and an anti-freezing device. The controller is electrically connected with the refrigeration system, the temperature sensing device, and the anti-freezing device. The temperature sensing device is a temperature sensor. The refrigeration system comprises an evaporator, a compressor, a condenser, and a capillary tube. The refrigerator further comprises an inner container and a shell. The anti-freezing device comprises an anti-freezing pipe main stem, an anti-freezing pipe branch stem, and a valve. The anti-freezing device is fixed between the inner container and the shell of the refrigerator. The application utilizes the temperature sensing device to sense the water pipe temperature, displays the water pipe temperature through the water pipe temperature indicator light, and controls the valve of the anti-freezing pipe branch stem to open when the water pipe temperature is greater than a preset water pipe temperature or less than the preset water pipe temperature, so that the refrigerant flows in the anti-freezing pipe branch stem to increase the temperature of the water pipe surface and the temperature of the water in the water pipe. The application has high intelligence, reduces the humidity in the refrigeration chamber, and thus improves the service life of the refrigerator.

[0090] The similar parts among the embodiments provided by the application can be referred to each other. The specific embodiments provided above are only some examples under the general concept of the application and do not limit the protection scope of the application. Any other embodiments extended on the basis of the application scheme without creative labor belong to the protection scope of the application.

Claims

1. A type of air-cooled refrigerator, characterized in that, The air-cooled refrigerator includes: Rooms, doors, enclosures, refrigeration systems, controllers, temperature sensors, and antifreeze devices; The refrigeration system, controller, temperature sensor, and antifreeze device are located inside the cabinet; the door is assembled onto the cabinet. The controller is electrically connected to the refrigeration system, the temperature sensing device, and the antifreeze device, respectively; the temperature sensing device is a temperature sensor. The refrigeration system includes an evaporator, a compressor, a condenser, and a capillary tube; The refrigerator also includes an inner liner and a shell; The antifreeze device includes a main anti-condensation pipe, branch anti-condensation pipes, and valves, and is fixed between the inner liner and the outer shell of the refrigerator. When the water pipe temperature is higher than the preset water pipe temperature, the valve of the main anti-condensation pipe is opened to allow the refrigerant to pass through the main anti-condensation pipe; when the water pipe temperature is lower than the preset water pipe temperature, the valve of the branch anti-condensation pipe is opened to allow the refrigerant to pass through the branch anti-condensation pipe.

2. The air-cooled refrigerator according to claim 1, characterized in that, The preset water pipe temperature is 1.5~3℃.

3. The air-cooled refrigerator according to claim 2, characterized in that, The refrigerator door is also equipped with a first temperature indicator light and a second temperature indicator light. The first temperature indicator light is activated when the water pipe temperature is higher than the preset water pipe temperature, and the second temperature indicator light is activated when the water pipe temperature is lower than the preset water pipe temperature.

4. The air-cooled refrigerator according to claim 1, characterized in that, The temperature sensing device includes a refrigerator temperature sensor, a refrigerator evaporation sensor, a freezer temperature sensor, an ambient temperature sensor, and a water pipe temperature sensor; the refrigerator temperature sensor and the refrigerator evaporation temperature sensor are located in the first compartment, the freezer temperature sensor is located in the second compartment, the ambient temperature sensor is located on the top of the refrigerator body, and the water pipe temperature sensor is located on the water pipe.

5. The air-cooled refrigerator according to claim 4, characterized in that, The water pipe temperature sensor is located 300-500mm from the water pipe outlet.

6. A control method for a frost-cooled refrigerator, characterized in that, The air-cooled refrigerator is the air-cooled refrigerator according to any one of claims 1-5; the method includes: Obtain the temperature of the water pipes; When the water pipe temperature is higher than the preset water pipe temperature, the valve of the anti-condensation pipe main is opened to allow the refrigerant to pass through the anti-condensation pipe main. When the water pipe temperature is lower than the preset water pipe temperature, the valve of the anti-condensation pipe branch is opened to allow the refrigerant to pass through the anti-condensation pipe branch.

7. The control method for a frost-cooled refrigerator according to claim 6, characterized in that, The method further includes: Each time power is applied, the controller checks the compressor's hardware delay protection circuit and starts the compressor if the downtime is greater than or equal to 5 minutes. The compressor starts when both the refrigeration evaporation sensor and the refrigeration temperature sensor are above the start-up point. The compressor will stop when the temperature of the refrigeration temperature sensor is lower than the shutdown point or when the compressor has been running continuously for 240 minutes or more.

8. The control method for a frost-cooled refrigerator according to claim 6, characterized in that, The method further includes: When the water pipe temperature exceeds the preset water pipe temperature, the first temperature indicator light will activate and display the first color; When the water pipe temperature is lower than the preset water pipe temperature, the second temperature indicator light is activated and displays a second color, wherein the first color and the second color are different.

9. The control method for a frost-cooled refrigerator according to claim 6, characterized in that, The method further includes: When the door to the room is open, the LED lights in the room are turned on; If the door to the compartment is open for more than a preset time, all indicator lights on the refrigerator will flash at a preset frequency and an alarm will be sent.

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