Air-cooled refrigerator and control method thereof

Abstract

The invention provides an air-cooled refrigerator and a control method thereof. The air-cooled refrigerator comprises a chamber, a door body, a refrigerating system, a controller, a temperature sensing device and an anti-freezing device. The controller is electrically connected with the refrigerating system, the temperature sensing device and the anti-freezing device. The temperature sensing device is a temperature sensor; the anti-freezing device comprises an anti-condensation pipe trunk, an anti-condensation pipe branch and a valve, and the anti-freezing device is fixed between an inner container and a shell of the refrigerator. The water pipe temperature is sensed through the temperature sensing device and displayed through the water pipe temperature indicator light, when the water pipe temperature is larger than the preset water pipe temperature, the water pipe temperature indicator light is green, when the water pipe temperature is smaller than the preset water pipe temperature, the water pipe temperature indicator light is red, and the controller controls the valve of the anti-condensation pipe branch to be opened; refrigerant flows in the anti-condensation pipe branches to increase the temperature of the surface of the water pipe and further increase the temperature of water in the water pipe. And the humidity in the refrigerating chamber is reduced, so that the service life of the refrigerator is prolonged.

Description

Technical Field

[0001] The present application relates to the field of household appliance technology, and in particular to an air-cooled refrigerator and a control method thereof. Background Art

[0002] With the development of technology and the improvement of people's living standards, refrigerators have become a necessity for every family. At present, most refrigerators are air-cooled refrigerators, which use fans to circulate air for cooling. In recent years, people's health awareness has gradually increased, and the demand for food preservation has also increased. As the most commonly used household appliance for food storage, food preservation and storage has become a technical demand that needs to be urgently addressed in the refrigerator field.

[0003] A direct cooling refrigerator is a traditional refrigerator design, also known as a single-chamber refrigerator or a compressor refrigerator. Its refrigeration method is relatively simple, mainly using a compressor to achieve a refrigeration cycle, circulating the refrigerant in the freezer, while the refrigerator compartment is kept at a lower temperature through natural convection. Direct cooling refrigerators have a high ownership rate due to their high cost-effectiveness and low failure rate.

[0004] Existing direct cooling refrigerators have high energy efficiency and good insulation effects. The water pipe is between the freezing chamber and the box shell. If the water pipe is squeezed by foaming, the water pipe will be closer to the freezing chamber than the reserved size during assembly, which means that the condensed water will easily pass through zero and freeze. Direct cooling refrigerators have a defrosting time. The defrosting time is designed for the refrigeration and defrosting of the refrigerator, and does not take into account the problem of freezing and blocking of the water pipe. This means that when the water pipe is frozen and blocked, the user may not be able to sense it in time. If the amount of water is large, it cannot be discharged out of the refrigerator through the water pipe, and then accumulates in the refrigerator, which will provide a humid environment for bacteria, accelerate food spoilage, and increase energy consumption. The refrigerator needs to work continuously to remove excess moisture, which will cause electrical components to become damp, and then cause short circuits or other electrical failures, and even damage key components such as compressors. Refrigerators that are in a humid environment for a long time are more likely to fail, shortening the overall service life of the refrigerator. Summary of the invention

[0005] The present application provides an air-cooled refrigerator and a control method thereof, so as to solve the problem that a drain pipe of a direct-cooled refrigerator is discharged from a refrigerating chamber through a freezing chamber to a box body, the drain pipe is close to the freezing box body, and the pipe is easily blocked by 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 an air-cooled refrigerator, the air-cooled refrigerator comprising:

[0007] Compartments, doors, boxes, refrigeration systems, controllers, temperature sensing devices and antifreeze devices;

[0008] The refrigeration system, controller, temperature sensing device and antifreeze device are arranged in the box; the door body is assembled on the box; 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;

[0009] The refrigeration system includes an evaporator, a compressor, a condenser, and a capillary tube;

[0010] The refrigerator also includes an inner container and a shell;

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

[0012] In some possible implementations, when the water pipe temperature is greater than a preset water pipe temperature, the valve of the antifreeze pipe main trunk is opened to allow the refrigerant to pass through the antifreeze pipe main trunk; when the water pipe temperature is lower than the preset water pipe temperature, the valve of the antifreeze pipe branch is opened to allow the refrigerant to pass through the antifreeze pipe branch.

[0013] In some possible implementations, the preset water pipe temperature is 1.5-3°C.

[0014] In some possible implementations, the refrigerator door is further provided with a first temperature indicator light and a second temperature indicator light, wherein the first temperature indicator light is activated when the water pipe temperature is greater than a preset water pipe temperature, and the second temperature indicator light is activated when the water pipe temperature is less than the preset water pipe temperature.

[0015] In some possible implementations, the temperature sensing device includes a refrigerated temperature sensor, a refrigerated evaporation sensor, a frozen temperature sensor, an ambient temperature sensor, and a water pipe temperature sensor; the refrigerated temperature sensor and the refrigerated evaporation temperature sensor are located in the first room, the frozen temperature sensor is located in the second room, 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.

[0016] In some possible implementations, the water pipe temperature sensor is disposed 300 to 500 mm away from the water pipe outlet.

[0017] In a second aspect, the present application provides a control method for an air-cooled refrigerator, wherein the air-cooled refrigerator is the air-cooled refrigerator described in the first aspect; the method comprises:

[0018] Get the temperature of the water pipe;

[0019] When the water pipe temperature is greater than the preset water pipe temperature, the valve of the antifreeze pipe trunk is controlled to open so that the refrigerant passes through the antifreeze pipe trunk;

[0020] When the water pipe temperature is lower than the preset water pipe temperature, the valve of the antifreeze pipe branch is controlled to open so that the refrigerant passes through the antifreeze pipe branch.

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

[0022] Each time the power is turned on, the controller checks the compressor hardware delay protection circuit and turns on the compressor when the downtime is greater than or equal to 5 minutes;

[0023] When the refrigeration evaporation sensor and the refrigeration temperature sensor are higher than the start-up point, the compressor starts;

[0024] The refrigeration temperature sensor will shut down when the temperature is lower than the shutdown point or the compressor runs continuously for more than or equal to 240 minutes.

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

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

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

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

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

[0030] When the door of the compartment is opened for more than a preset time, all indicator lights on the refrigerator flash at a preset frequency and send an alarm.

[0031] From the above content, it can be seen that the present application provides an air-cooled refrigerator and a control method thereof, wherein the air-cooled refrigerator comprises: a compartment, a door, a refrigeration system, a controller, a temperature sensing device and an antifreeze device; 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 comprises an evaporator, a compressor, a condenser, and a capillary tube; the refrigerator also comprises an inner tank and a shell; the antifreeze device comprises an anti-condensation pipe trunk, an anti-condensation pipe branch and a valve, and the antifreeze device is fixed between the inner tank and the shell of the refrigerator. The present application uses a temperature sensing device to sense the water pipe temperature, and displays it through a water pipe temperature indicator. When the water pipe temperature is greater than the preset water pipe temperature, the water pipe temperature indicator lights up green, and when the water pipe temperature is less than the preset water pipe temperature, the water pipe temperature indicator lights up red, and the controller controls the valve of the anti-condensation pipe branch to open, and the refrigerant flows in the anti-condensation pipe branch to increase the temperature of the water pipe surface and thus increase the temperature of the water in the water pipe. It is highly intelligent, reduces the humidity in the cold storage room, and thus increases the service life of the refrigerator. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solution of the present application, the drawings required for use in the embodiments are briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0033] Figure 1 Schematic diagram of the air-cooled refrigerator control method provided in the embodiment of the present application Figure 1 ;

[0034] Figure 2 Schematic diagram of the air-cooled refrigerator control method provided in the embodiment of the present application Figure 2 ;

[0035] Figure 3 A schematic diagram of a refrigeration system in an air-cooled refrigerator provided in an embodiment of the present application;

[0036] Figure 4 A front view of an air-cooled refrigerator provided in an embodiment of the present application;

[0037] Figure 5 A side view of an air-cooled refrigerator provided in an embodiment of the present application;

[0038] Figure 6 The anti-condensation tube provided in the embodiment of the present application is shown in FIG. Figure 1 ;

[0039] Figure 7 The anti-condensation tube provided in the embodiment of the present application is shown in FIG. Figure 2 ;

[0040] Figure 8 A side view of the anti-condensation tube provided in an embodiment of the present application;

[0041] Fig. 9 A top view of the anti-condensation tube provided in an embodiment of the present application;

[0042] Fig.10 This is a rear view of the air-cooled refrigerator provided in an embodiment of the present application.

[0043] Illustration Description:

[0044] 1- Refrigerator, 2- Freezer, 3- Main control board, 4- Gear, 5- SET button, 6- Water pipe temperature indicator, 7- Refrigerator evaporation temperature sensor, 8- Refrigerator temperature sensor, 9- Freezer temperature sensor, 10- Ambient temperature sensor, 11- Water pipe temperature sensor, 12- Anti-condensation pipe near the freezer door, 13- Anti-condensation pipe near the water pipe, 14- Anti-condensation pipe branch, 15- Anti-condensation pipe main, 16- Anti-condensation pipe branch valve, 17- Anti-condensation pipe main valve, 18- Anti-condensation pipe, 19- Water pipe, 20- Compressor. DETAILED DESCRIPTION

[0045] The following embodiments are described in detail, and examples thereof are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementations described in the following embodiments do not represent all implementations consistent with the present application. They are only examples of systems and methods consistent with some aspects of the present application as detailed in the claims.

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

[0047] A direct cooling refrigerator is a traditional refrigerator design, also known as a single-chamber refrigerator or a compressor refrigerator. Its refrigeration method is relatively simple, mainly using a compressor to achieve a refrigeration cycle, circulating the refrigerant in the freezer, while the refrigerator compartment is kept at a lower temperature through natural convection. Direct cooling refrigerators have a high ownership rate due to their high cost-effectiveness and low failure rate.

[0048] Existing direct cooling refrigerators have high energy efficiency and good insulation effects. The water pipe is between the freezing chamber and the box shell. If the water pipe is squeezed by foaming, the water pipe will be closer to the freezing chamber than the reserved size during assembly, which means that the condensed water will easily pass through zero and freeze. Direct cooling refrigerators have a defrosting time. The defrosting time is designed for the refrigeration and defrosting of the refrigerator, and does not take into account the problem of freezing and blocking of the water pipe. This means that when the water pipe is frozen and blocked, the user may not be able to sense it in time. If the amount of water is large, it cannot be discharged out of the refrigerator through the water pipe, and then accumulates in the refrigerator, which will provide a humid environment for bacteria, accelerate food spoilage, and increase energy consumption. The refrigerator needs to work continuously to remove excess moisture, which will cause electrical components to become damp, and then cause short circuits or other electrical failures, and even damage key components such as compressors. Refrigerators that are in a humid environment for a long time are more likely to fail, shortening the overall service life of the refrigerator.

[0049] Based on this, the present application provides an air-cooled refrigerator and a control method thereof. The present application uses a temperature sensing device to sense the water pipe temperature. When the water pipe temperature is greater than the preset water pipe temperature, the controller controls the valve of the anti-condensation pipe main trunk to open, and the refrigerant flows in the anti-condensation pipe main trunk; when the water pipe temperature is lower than the preset water pipe temperature, the controller controls the valve of the anti-condensation pipe branch to open, and the refrigerant flows in the anti-condensation pipe branch to increase the temperature of the water pipe surface and thereby increase the temperature of the water in the water pipe.

[0050] In some embodiments, the present application provides an air-cooled refrigerator, the air-cooled refrigerator comprising:

[0051] Compartments, doors, boxes, refrigeration systems, controllers, temperature sensing devices and antifreeze devices;

[0052] The refrigeration system, controller, temperature sensing device and antifreeze device are arranged in the box; the door body is assembled on the box;

[0053] 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;

[0054] The refrigeration system includes an evaporator, a compressor, a condenser, and a capillary tube;

[0055] The refrigerator also includes an inner container and a shell;

[0056] The antifreeze device comprises an antifreeze pipe main trunk, an antifreeze pipe branch trunk and a valve, and the antifreeze device is fixed between the inner container and the shell of the refrigerator.

[0057] The refrigeration system includes an evaporator, a compressor, a condenser, a capillary tube, etc. The evaporator is a heat-absorbing 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 for refrigeration and freezing; the compressor is the heart of the refrigerator refrigeration system, which is a driven fluid machine that lifts low-pressure gas to 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 are all completed with the help 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; the capillary tube is a resistance component, which turns the high-temperature and high-pressure liquid into a low-temperature and low-pressure liquid through resistance throttling. The compressor is a variable frequency compressor with adjustable frequency. According to the signal given by the control module, the compressor is controlled to start and stop, and the temperature is controlled. The direct cooling refrigerator uses a variable frequency compressor to reduce 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 antifreeze pipe main trunk opens to allow the refrigerant to pass through the antifreeze pipe main trunk; when the water pipe temperature is lower than the preset water pipe temperature, the valve of the antifreeze pipe branch opens to allow the refrigerant to pass through the antifreeze pipe branch.

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

[0060] Taking the preset water pipe temperature of 1.5°C as an example, the anti-condensation pipe main trunk is the route of the refrigerant when the water pipe temperature is greater than 1.5°C, and the anti-condensation pipe branch is the route of the refrigerant when the water pipe temperature is less than 1.5°C. The anti-condensation pipe branch is close to the water pipe to increase the surface temperature of the water pipe.

[0061] In some embodiments, the refrigerator door is also provided 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 greater than a preset water pipe temperature, and the second temperature indicator light is activated when the water pipe temperature is less than the preset water pipe temperature.

[0062] In some embodiments, the temperature sensing device includes a refrigerated temperature sensor, a refrigerated evaporation sensor, a frozen temperature sensor, an ambient temperature sensor, and a water pipe temperature sensor; the refrigerated temperature sensor and the refrigerated evaporation temperature sensor are located in the first room, the frozen temperature sensor is located in the second room, 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.

[0063] The temperature sensing device includes multiple temperature sensors, such as refrigeration temperature sensor, refrigeration evaporation sensor, freezing temperature sensor, ambient temperature sensor, water pipe temperature sensor, which accurately collects the temperature of the refrigerator's refrigeration and freezing compartments and water pipes, and transmits the collected signals to the controller.

[0064] In some embodiments, the water pipe temperature sensor is arranged at a distance of 300 to 500 mm from the water pipe outlet.

[0065] In some embodiments, the present application provides a control method for an air-cooled refrigerator, wherein the air-cooled refrigerator is the air-cooled refrigerator in the above embodiment; the method comprises:

[0066] Get the temperature of the water pipe;

[0067] When the water pipe temperature is greater than the preset water pipe temperature, the valve of the antifreeze pipe trunk is controlled to open so that the refrigerant passes through the antifreeze pipe trunk;

[0068] When the water pipe temperature is lower than the preset water pipe temperature, the valve of the antifreeze pipe branch is controlled to open so that the refrigerant passes through the antifreeze pipe branch.

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

[0070] Each time the power is turned on, the controller checks the compressor hardware delay protection circuit and turns on the compressor when the downtime is greater than or equal to 5 minutes;

[0071] When the refrigeration evaporation sensor and the refrigeration temperature sensor are higher than the start-up point, the compressor starts;

[0072] The refrigeration temperature sensor will shut down when the temperature is lower than the shutdown point or the compressor runs continuously for more than or equal to 240 minutes.

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

[0074] When the water pipe temperature is greater than the preset water pipe temperature, the first temperature indicator light is activated and displays a first color;

[0075] When the water pipe temperature is lower than a preset water pipe temperature, the second temperature indicator light is activated and displays a second color, wherein the first color is different from the second color.

[0076] When the water pipe temperature is less than 1.5℃, the first temperature indicator light turns red, and when the water pipe temperature is greater than 1.5℃, the second temperature indicator light turns 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 of the compartment is opened for more than a preset time, all indicator lights on the refrigerator flash at a preset frequency and send an alarm.

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

[0081] The present application uses a temperature sensing device to sense the water pipe temperature, and displays it through a water pipe temperature indicator. When the water pipe temperature is greater than the preset water pipe temperature, the water pipe temperature indicator lights up green, and when the water pipe temperature is less than the preset water pipe temperature, the water pipe temperature indicator lights up red. The controller controls the valve of the anti-condensation pipe branch to open, and the refrigerant flows in the anti-condensation pipe branch to increase the temperature of the water pipe surface and thus increase the temperature of the water in the water pipe. It is highly intelligent, reduces the humidity in the cold storage room, and thus increases the service life of the refrigerator.

[0082] Example

[0083] See also Figures 1 to 10 , an air-cooled refrigerator provided in this embodiment, the air-cooled refrigerator includes 1 a refrigerating chamber, 2 a freezing chamber, 3 a main control board box, 4 gears, 5 a "SET button", 6 a water pipe temperature indicator light, 7 a refrigerating evaporation temperature sensor, 8 a refrigerating temperature sensor, 9 a freezing temperature sensor, 10 an ambient temperature sensor, 11 a water pipe temperature sensor, 12 an anti-condensation pipe near the freezing door end, 13 an anti-condensation pipe near the water pipe end, 14 an anti-condensation pipe branch, 15 an anti-condensation pipe main, 16 an anti-condensation pipe branch valve, 17 an anti-condensation pipe main valve, 18 an anti-condensation pipe, 19 a water pipe, and 20 a compressor. A controller is provided in the main control panel box to control the start and stop and speed of the compressor. The gear position is located on the main control panel box. The "SET button" controls the gear position of the controller. The water pipe temperature indicator light is located in the cold storage room. The refrigeration temperature sensor and the refrigeration evaporation temperature sensor are located in the cold storage room. The freezing temperature sensor is located in the freezing room. The ambient temperature sensor is located on the top of the box. 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 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 valve is opened, and the anti-condensation pipe main is used.

[0084] The technical logic includes the following steps:

[0085] Step 1: Run the normal cooling mode. In this mode, the cooling capacity generated by the refrigeration system is delivered to the refrigerator compartment 1 and the freezer compartment 2. Run step 2.

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

[0087] Step 3: Run the antifreeze device. When the water pipe temperature sensor 11 is greater than 1.5°C, the water pipe temperature indicator 6 lights up green, the anti-condensation pipe branch valve 16 is closed, the anti-condensation pipe main valve 17 is opened, and the refrigerant flows through the main trunk 15 to the anti-condensation pipe near the freezing door end 12, and then returns to the compressor 19; when the water pipe temperature sensor 11 is less than 1.5°C, the water pipe temperature indicator 6 lights up red, the anti-condensation pipe main valve 17 is closed, the anti-condensation pipe branch valve 16 is opened, and the refrigerant flows through the branch trunk 14 to the anti-condensation pipe near the freezing door end 12, and then returns to the anti-condensation pipe near the water pipe end 13, and then returns to the compressor 20. Run step 4.

[0088] Step 4: Run the temperature sensing module. When the refrigeration temperature sensor 8, the refrigeration evaporation temperature sensor 7, the freezing temperature sensor 9, the ambient 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] It can be seen from the above embodiments that the present application provides an air-cooled refrigerator and a control method thereof, wherein the air-cooled refrigerator comprises: a compartment, a door, a refrigeration system, a controller, a temperature sensing device and an antifreeze device; 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 comprises an evaporator, a compressor, a condenser, and a capillary tube; the refrigerator also comprises an inner tank and a shell; the antifreeze device comprises an anti-condensation pipe trunk, an anti-condensation pipe branch and a valve, and the antifreeze device is fixed between the inner tank and the shell of the refrigerator. The present application uses a temperature sensing device to sense the water pipe temperature, and displays it through a water pipe temperature indicator. When the water pipe temperature is greater than the preset water pipe temperature, the water pipe temperature indicator lights up green, and when the water pipe temperature is less than the preset water pipe temperature, the water pipe temperature indicator lights up red, and the controller controls the valve of the anti-condensation pipe branch to open, and the refrigerant flows in the anti-condensation pipe branch to increase the temperature of the water pipe surface and thus increase the temperature of the water in the water pipe. It is highly intelligent, reduces the humidity in the cold storage room, and thus increases the service life of the refrigerator.

[0090] Similar parts between the embodiments provided in this application can be referenced to each other. The specific implementation methods provided above are only a few examples under the general concept of this application and do not constitute a limitation on the protection scope of this application. For those skilled in the art, any other implementation methods expanded based on the scheme of this application without creative work belong to the protection scope of this application.

Claims

1. An air-cooled refrigerator, characterized in that: The air-cooled refrigerator comprises: Compartments, doors, boxes, refrigeration systems, controllers, temperature sensing devices and antifreeze devices; The refrigeration system, controller, temperature sensing device and antifreeze device are arranged in the box; the door body is assembled on the box; 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 container and a shell; The antifreeze device comprises an antifreeze pipe main trunk, an antifreeze pipe branch trunk and a valve, and the antifreeze device is fixed between the inner container and the shell of the refrigerator.

2. The air-cooled refrigerator according to claim 1, characterized in that: When the water pipe temperature is greater than the preset water pipe temperature, the valve of the antifreeze pipe main trunk opens to allow the refrigerant to pass through the antifreeze pipe main trunk; when the water pipe temperature is less than the preset water pipe temperature, the valve of the antifreeze pipe branch opens to allow the refrigerant to pass through the antifreeze pipe branch.

3. The air-cooled refrigerator according to claim 2, characterized in that: The preset water pipe temperature is 1.5-3°C.

4. The air-cooled refrigerator according to claim 3, characterized in that: The door of the refrigerator is also provided 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 greater than a preset water pipe temperature, and the second temperature indicator light is activated when the water pipe temperature is less than the preset water pipe temperature.

5. The air-cooled refrigerator according to claim 1, characterized in that: The temperature sensing device includes a refrigeration temperature sensor, a refrigeration evaporation sensor, a freezing temperature sensor, an ambient temperature sensor, and a water pipe temperature sensor; the refrigeration temperature sensor and the refrigeration evaporation temperature sensor are located in the first room, the freezing temperature sensor is located in the second room, 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.

6. The air-cooled refrigerator according to claim 5, characterized in that: The water pipe temperature sensor is arranged at a distance of 300 to 500 mm from the water pipe outlet.

7. A control method for an air-cooled refrigerator, characterized in that: The air-cooled refrigerator is the air-cooled refrigerator according to any one of claims 1 to 6; the method comprises: Get the temperature of the water pipe; When the water pipe temperature is greater than the preset water pipe temperature, the valve of the antifreeze pipe trunk is controlled to open so that the refrigerant passes through the antifreeze pipe trunk; When the water pipe temperature is lower than the preset water pipe temperature, the valve of the antifreeze pipe branch is controlled to open so that the refrigerant passes through the antifreeze pipe branch.

8. The control method of the air-cooled refrigerator according to claim 7, characterized in that: The method further comprises: Each time the power is turned on, the controller checks the compressor hardware delay protection circuit and turns on the compressor if the downtime is greater than or equal to 5 minutes; When the refrigeration evaporation sensor and the refrigeration temperature sensor are higher than the start-up point, the compressor starts; The refrigeration temperature sensor will shut down when the temperature is lower than the shutdown point or the compressor runs continuously for more than or equal to 240 minutes.

9. The control method of the air-cooled refrigerator according to claim 7, characterized in that: The method further comprises: When the water pipe temperature is greater than the preset water pipe temperature, the first temperature indicator light is activated and displays a first color; When the water pipe temperature is lower than a preset water pipe temperature, the second temperature indicator light is activated and displays a second color, wherein the first color is different from the second color.

10. The control method of the air-cooled refrigerator according to claim 7, characterized in that: The method further comprises: When the door of the compartment is in an open state, the LED light of the compartment is turned on; When the door of the compartment is opened for more than a preset time, all indicator lights on the refrigerator flash at a preset frequency and send an alarm.

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