Refrigerator control method and refrigerator

Abstract

The invention discloses a refrigerator control method and a refrigerator. The refrigerator control method comprises the steps that the actual refrigerating temperature Tc of a refrigerating chamber and the actual freezing temperature Td of a freezing chamber are detected; comparing the actual refrigeration temperature Tc with the set refrigeration temperature Tc, and comparing the actual freezing temperature Td with the set freezing temperature Td; when Tc set-Tc is larger than 0 and Td set-Td is smaller than 0, the draught fan of the evaporator cavity continues to operate and only supplies air to the freezing chamber, the compressor continues to operate, and the rotating speed of the compressor is controlled according to the freezing temperature difference value of Td set-Td; and / or when Tc is set to-Tc < 0 and Td is set to-Td > 0, the compressor stops running, and the fan of the evaporator cavity continues to run to supply air to the refrigerating chamber and the freezing chamber. In the refrigerating process of the storage chamber, different control logics are formulated according to the actual temperature in the chamber, so that the purposes of saving energy and improving the food storage quality are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of refrigerators, and in particular to a refrigerator control method and a refrigerator. Background Art

[0002] As a common single-system air-cooled refrigerator, it usually has: storage compartments; compressors, condensers, dry filters, capillaries and evaporators connected by piping to form a refrigeration cycle; control systems composed of controllers, temperature sensors, electric dampers, fans and other components. The cooling demand of the storage compartments is met by the fans, which transport the cooling energy generated by the evaporator to the air ducts of each storage compartment, and the outlets of the air ducts correspond to each storage compartment.

[0003] During the operation of the compressor, the storage compartment is continuously cooled. If it is determined that the temperature of the storage compartment is lower than the specified temperature and cooling is not required, the compressor is stopped and cooling of the storage compartment is terminated. While the compressor is stopped, the temperature gradually rises as time passes due to the heating of the outside air around the refrigerator. If it is determined that the temperature of the storage compartment is higher than the specified temperature and cooling of the storage compartment is required, the compressor is started and cooling is resumed.

[0004] The storage compartments of ordinary refrigerators are basically configured as refrigerators and freezers. Due to the different usage frequencies of the storage compartments and the different foods stored, the refrigerator and freezer compartments have different times when they do not need to be cooled. The following two states are more common: the first is that the temperature of the refrigerator compartment reaches the specified requirements, but the temperature of the freezer compartment has not; the second is that the temperature of the refrigerator compartment has not reached the specified requirements, but the temperature of the freezer compartment has reached. In the traditional control scheme, the compressor needs to continue to work in both states to meet the specified requirements for the temperatures of the two storage compartments before the compressor can stop working. For the first state, the refrigeration demand changes from two storage compartments to a separate freezer compartment, and the frequency of the compressor operation does not change, resulting in a situation where a big horse pulls a small cart, resulting in a waste of cooling capacity. In particular, in the second state, there may be users who frequently open and close the door to place food, or put in hot food, resulting in the temperature of the refrigerator compartment not reaching the specified requirements for a long time, the compressor continues to work, and the temperature of the freezer compartment exceeds the specified requirements, resulting in a waste of cooling capacity.

[0005] Therefore, how to design a refrigerator control method and a refrigerator that can improve energy saving effect and food storage quality is a technical problem that needs to be solved urgently in the industry. Summary of the invention

[0006] In order to solve the defect of waste of cold energy in the existing refrigerator control method, the present invention proposes a refrigerator control method and a refrigerator. During the refrigeration process of the storage compartment, the refrigerator control method formulates different control logics according to the actual temperature in the compartment to achieve the purpose of energy saving and improving the quality of food storage.

[0007] The technical solution adopted by the present invention is to design a refrigerator control method, comprising:

[0008] Detecting the actual refrigerating temperature Tc of the refrigerating chamber and the actual freezing temperature Td of the freezing chamber;

[0009] Compare the actual refrigeration temperature Tc with the set refrigeration temperature Tc 设 , and the actual freezing temperature Td and the set freezing temperature Td 设 ;

[0010] When Tc 设 - Tc>0 and Td 设 - When Td < 0, the fan of the evaporator chamber continues to operate and only supplies air to the freezing chamber, and the compressor continues to operate and according to Td 设 - The freezing temperature difference value of Td controls the speed of the compressor;

[0011] and / or when Tc 设 - Tc<0 and Td 设 - When Td>0, the compressor stops running, and the fan of the evaporator chamber continues to run to supply air to the refrigerating chamber and the freezing chamber.

[0012] Furthermore, the refrigerator control method also includes:

[0013] When Tc 设 - Tc<0 and Td 设 - When Td>0, after the compressor stops running, determine whether Tc 设 - The refrigeration temperature difference value of Tc is less than the preset refrigeration temperature difference value;

[0014] If yes, the compressor remains off;

[0015] If not, the change trend of the refrigeration temperature difference value is used to select whether to start the compressor.

[0016] Further, selecting whether to turn on the compressor according to the change trend of the refrigeration temperature difference value includes:

[0017] Obtain the refrigeration temperature difference between the two tests;

[0018] Determining whether the refrigeration temperature difference value is reduced;

[0019] If not, the compressor starts running;

[0020] If so, the compressor remains off.

[0021] Furthermore, after the compressor stops running, the fan runs at a set speed.

[0022] Furthermore, according to Td 设The control of the speed of the compressor by the refrigeration temperature difference of -Td includes:

[0023] Determine whether the freezing temperature difference value is greater than a preset freezing temperature difference value;

[0024] If yes, reducing the speed of the compressor;

[0025] If not, the speed of the compressor is maintained.

[0026] Furthermore, when the compressor is started, the rotation speed of the fan is adjusted synchronously with the compressor.

[0027] In some embodiments, the speed gear of the fan matches the speed gear of the compressor, and the compressor is adjusted one gear at a time.

[0028] The present invention further proposes a refrigerator, comprising: a refrigerating chamber, a freezing chamber and an evaporator chamber, wherein the evaporator chamber is provided with an evaporator and a fan, and a controller of the refrigerator executes the above-mentioned refrigerator control method.

[0029] Furthermore, the refrigerating chamber is provided with a refrigerating air inlet duct and a refrigerating air return duct connected to the evaporator cavity, and the freezing chamber is provided with a freezing air inlet duct and a freezing air return duct connected to the evaporator cavity, the fan is used to drive the airflow in the evaporating cavity to the refrigerating air inlet duct and the freezing air inlet duct, and the refrigerating air inlet duct is equipped with a damper for switching its on and off state.

[0030] Furthermore, the wind resistance of the freezing air inlet duct is greater than the wind resistance of the freezing air inlet duct.

[0031] Compared with the prior art, the present invention has at least one of the following beneficial effects:

[0032] 1. During the refrigeration process of the storage room, different control logics are formulated according to the actual temperature in the room. When the refrigeration room reaches the set refrigeration temperature and the freezer room does not reach the set freezing temperature, the cold air in the evaporator cavity is only supplied to the freezer room, and according to Td 设 - The freezing temperature difference of Td controls the speed of the compressor. When the refrigerating room does not reach the set refrigerating temperature and the freezing room reaches the set freezing temperature, the compressor is turned off and the heat capacity of the evaporator and the cold capacity of the freezing room are used to cool the refrigerating room. Both control logics can reduce the waste of cold capacity, achieve energy saving and improve the quality of food storage;

[0033] 2. When the refrigerator compartment has not reached the set refrigeration temperature and the freezer compartment has reached the set freezing temperature, after turning off the compressor, choose whether to turn on the compressor based on the size of the refrigeration temperature difference and its changing trend to ensure that the refrigeration system provides sufficient cooling capacity to lower the refrigerator compartment to the set refrigeration temperature and ensure the storage quality of food. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The present invention is described in detail below with reference to the embodiments and accompanying drawings, wherein:

[0035] Figure 1 It is a schematic diagram of the internal structure of the refrigerator of the present invention;

[0036] Figure 2 It is a schematic diagram of the working process of the refrigerator of the present invention;

[0037] Figure 3 is a schematic diagram of the refrigerator of the present invention in a first state;

[0038] Figure 4 is a schematic diagram of the refrigerator of the present invention in a second state;

[0039] Figure 5 is a schematic diagram of the refrigerator of the present invention in a third state;

[0040] Figure 6 is a schematic block diagram of a control module of the present invention;

[0041] Description of the drawings: 1. compressor; 2. condenser; 3. throttling device; 4. evaporator; 5. fan; 6. damper; 7a. cold storage room; 7b. freezer room; 8. evaporator cavity. DETAILED DESCRIPTION

[0042] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0043] like Figure 1 As shown, the refrigerator control method proposed in the present invention is applicable to refrigerators, especially single-cooling refrigerators. The refrigerator includes: a refrigerating chamber 7a, a freezing chamber 7b and an evaporator chamber 8. The evaporator chamber 8 is usually designed at the back of the freezing chamber 7b. The evaporator chamber 8 is provided with an evaporator 4 and a fan 5. The refrigerating chamber 7a and the freezing chamber 7b are respectively responsible for storing food under different temperature conditions. Generally speaking, the set temperature of the refrigerating chamber 7a is higher than the set temperature of the freezing chamber 7b.

[0044] The refrigerating chamber 7a is connected to the evaporator chamber 8 through the refrigerating air inlet duct and the refrigerating air return duct, forming a closed air circulation path. Similarly, the freezing chamber 7b is connected to the evaporator chamber through the freezing air inlet duct and the freezing air return duct, forming a closed air circulation path. A damper 6 is also provided in the refrigerating air inlet duct, and the damper 6 is an electric damper. The on-off state of the refrigerating air inlet duct is flexibly switched through the damper 6, thereby realizing precise control of the air circulation of the refrigerating chamber 7a and the freezing chamber 7b.

[0045] When the fan 5 is turned on and the damper 6 is opened, the cold air in the evaporator cavity 8 is driven to flow along a specific air duct. A portion of the cold air enters the refrigerated chamber 7a through the refrigerated air inlet duct to cool the food inside. Subsequently, the air that has absorbed heat flows back to the evaporator cavity 8 through the refrigerated return air duct, completing the air flow cycle of the refrigerated chamber 7a. At the same time, another portion of the cold air enters the freezing chamber 7b through the freezing air inlet duct to deep freeze the food in the freezing chamber 7b. Similarly, after absorbing heat, the cold air will also return to the evaporator cavity 8 through the freezing return air duct to complete the air flow cycle of the freezing chamber 7b. Such an air flow circulation design not only ensures the uniform distribution of the temperature inside the refrigerator, but also greatly improves the refrigeration efficiency.

[0046] The evaporator 4 is connected to the refrigerator's refrigeration system. The refrigerant is compressed into a high-pressure and high-temperature gas by the compressor 1, and then enters the condenser 2 to release heat and condense into a high-pressure liquid. Then, the high-pressure liquid refrigerant enters the evaporator 4 after being depressurized by the throttling device 3, and rapidly expands and absorbs surrounding heat in the evaporator 4, thereby converting into a low-temperature and low-pressure gas. In this process, the air in the evaporator 4 is cooled to form cold air, which is then sent into the refrigeration chamber 7a and the freezer chamber 7b by the fan 5. After the refrigerant completes the refrigeration task in the evaporator 4, it is sucked in by the compressor 1 again, starting a new round of circulation, and so on, to maintain the low-temperature environment inside the refrigerator.

[0047] Since the volume of the refrigerating chamber 7a is usually larger than that of the freezing chamber 7b, and the frequency of use of the refrigerating chamber 7a is higher than that of the freezing chamber 7b, the refrigerating chamber 7a needs more and more direct cold air supply to maintain its internal environment at a low temperature. Therefore, in the preferred embodiment, the wind resistance of the freezing air inlet duct is greater than the wind resistance of the freezing air inlet duct. When the fan 5 is turned on and the damper 6 is opened, more cold air in the evaporator chamber 8 flows to the refrigerating chamber 7a and less to the freezing chamber 7b, so that the temperature of the refrigerating chamber 7a can be quickly reduced after rising, thereby ensuring the quality of food storage.

[0048] like Figure 1 , 2 As shown, based on the above refrigerator structure, the refrigerator control method of the present invention is as follows:

[0049] Detecting the actual refrigerating temperature Tc of the refrigerating chamber 7a and the actual freezing temperature Td of the freezing chamber 7b;

[0050] Compare the actual refrigeration temperature Tc with the set refrigeration temperature Tc 设 , and the actual freezing temperature Td and the set freezing temperature Td 设 ;

[0051] Different control logics are selected according to the comparison results.

[0052] Specifically, the control logics of the following first and second states can both reduce the waste of cold energy, thereby achieving the goals of energy saving and improving the quality of food storage, which are described in detail below.

[0053] like Figure 3 As shown, the first state, when Tc 设 - Tc>0 and Td 设 When Td<0, it means that the actual refrigeration temperature Tc of the refrigeration chamber 7a has dropped to the set refrigeration temperature Tc 设 Below, the actual freezing temperature Td of the freezing chamber 7b is still higher than the set freezing temperature Td 设 At this time, the refrigerator compartment 7a has no cooling demand, the freezer compartment 7b has cooling demand, the fan 5 of the evaporator chamber 8 continues to operate and only supplies air to the freezer compartment 7b, the compressor 1 continues to operate, and according to Td 设 The speed of compressor 1 is controlled by the refrigeration temperature difference of -Td.

[0054] In this state, the damper 6 in the refrigerated air inlet duct is closed, and the fan 5 and the compressor 1 continue to operate, which is equivalent to the refrigeration system supplying cold capacity to the freezing chamber 7b alone, and then controlling the speed of the compressor 1 according to the freezing temperature difference, so that the actual freezing temperature Td of the freezing chamber 7b can quickly approach the set freezing temperature Td 设 At the same time, it can avoid the situation where the output capacity of the refrigeration system is too large, resulting in overshoot and waste of cooling capacity.

[0055] like Figure 4 As shown, the second state, when Tc 设 - Tc<0 and Td 设 - When Td>0, it means that the actual refrigeration temperature Tc of the refrigeration chamber 7a is still higher than the set refrigeration temperature Tc 设 , the actual freezing temperature Td of the freezing chamber 7b has dropped to the set freezing temperature Td 设 Next, at this time, the refrigerating chamber 7a has a refrigeration demand, and the freezing chamber 7b has no refrigeration demand, the compressor 1 stops running, and the fan 5 of the evaporator chamber 8 continues to run to supply air to the refrigerating chamber 7a and the freezing chamber 7b.

[0056] In this state, the damper 6 of the refrigeration air inlet duct is opened, the compressor 1 stops running, and the fan 5 continues to run, and the refrigeration chamber 7a is cooled by the heat capacity of the evaporator 4 and the cold capacity of the freezing chamber 7b, so that the actual refrigeration temperature Tc of the refrigeration chamber 7a can be close to the set refrigeration temperature Tc 设 , making full use of the remaining cooling capacity in the evaporator chamber 8 to avoid energy waste.

[0057] It should be noted that, since the wind resistance of the freezing air inlet duct is greater than that of the refrigerating air inlet duct, most of the cold energy in the evaporator cavity 8 is supplied to the refrigerating chamber 7a, ensuring that the remaining cold energy of the evaporator 4 can be supplied to the compartments with refrigeration requirements. 设 Lower than the set refrigeration temperature Tc 设 , set the freezing temperature Td 设 And set refrigeration temperature Tc 设 The temperature difference between the two is relatively large, so the low-temperature airflow drawn out from the freezing chamber 7b can be sent to the refrigerating chamber 7a through the evaporator cavity 8, thereby increasing the refrigeration effect.

[0058] In actual applications, the refrigerator will also have a third state and a fourth state, as follows.

[0059] like Figure 5 As shown, the third state is Tc 设 - Tc<0 and Td 设 -Td<0, that is, the actual refrigeration temperature Tc of the refrigeration chamber 7a is higher than the set refrigeration temperature Tc 设 , the actual freezing temperature Td of the freezing chamber 7b is higher than the set freezing temperature Td 设 At this time, both the refrigerator compartment 7a and the freezer compartment 7b have cooling needs, and the compressor 1 and the fan 5 are both turned on and running.

[0060] The fourth state is Tc 设 - Tc>0 and Td 设 -Td>0, that is, the actual refrigeration temperature Tc of the refrigeration chamber 7a is higher than the set refrigeration temperature Tc 设 , the actual freezing temperature Td of the freezing chamber 7b is higher than the set freezing temperature Td 设 At this time, there is no refrigeration demand in the refrigerator compartment 7a and the freezer compartment 7b, and the compressor 1 and the fan 5 are both turned off.

[0061] The third state and the fourth state are not the key design contents of the present invention and can be controlled according to conventional control logic. Those skilled in the art can select the control logic that has appeared in the prior art according to specific needs, and the present invention does not impose any special restrictions on this.

[0062] In some preferred embodiments of the present invention, for the first state, according to Td 设 The specific logic of controlling the compressor speed by the freezing temperature difference of -Td is as follows:

[0063] Determine whether the freezing temperature difference value is greater than the preset freezing temperature difference value, the preset freezing temperature difference value may range from -1°C to -2°C;

[0064] If yes, it means that the actual freezing temperature Td of the freezing chamber 7b is different from the set freezing temperature Td 设The deviation between them is small, the speed of the compressor 1 is reduced, the refrigeration capacity of the refrigeration system is reduced, and the actual freezing temperature Td of the freezing chamber 7b gradually approaches and reaches the set freezing temperature Td 设 , reduce the waste of cooling capacity and reduce the energy consumption of the refrigeration system;

[0065] If not, it means that the actual freezing temperature Td of the freezing chamber 7b is different from the set freezing temperature Td 设 The deviation between them is large, and the rotation speed of the compressor 1 is maintained, so that the actual freezing temperature Td of the freezing chamber 7b can drop rapidly, and the freezing chamber 7b can be restored to the appropriate storage condition at a faster speed to ensure the storage quality of food.

[0066] On this basis, when the compressor 1 is turned on, the speed of the fan 5 is adjusted synchronously with the compressor 1, that is, when the speed of the compressor 1 decreases, the speed of the fan 5 will also decrease, and when the speed of the compressor 1 is maintained, the speed of the fan 5 will also remain unchanged. This design can ensure that the refrigeration system can maintain a good refrigeration efficiency under different working conditions. When the speed of the compressor 1 increases, the refrigeration capacity also increases. At this time, the synchronous increase in the speed of the fan 5 can more effectively circulate the cold air to the refrigerator compartment 7a and the freezer compartment 7b of the refrigerator, thereby improving the refrigeration efficiency. On the contrary, when the speed of the compressor 1 decreases, the refrigeration capacity decreases, and the synchronous reduction in the speed of the fan 5 can avoid energy waste caused by excessive air supply.

[0067] In the preferred embodiment, the speed gear of the fan 5 matches the speed gear of the compressor 1. Each time the compressor 1 is adjusted by one gear, the fan 5 is adjusted by one gear synchronously. By accurately matching the speed gears of the compressor 1 and the fan 5, it can be ensured that the refrigerator can provide an appropriate amount of cooling capacity under different working conditions. Gradual adjustment can achieve detailed control of the cooling capacity, avoid system instability or increased energy consumption caused by excessive one-time adjustment, and make the actual freezing temperature Td of the freezing chamber 7b accurately reach the set freezing temperature Td 设 .

[0068] In some preferred embodiments of the present invention, for the second state, after the compressor 1 stops running, whether to start the compressor 1 is selected according to the size and change trend of the refrigeration temperature difference value. The specific logic is as follows:

[0069] Determine whether Tc 设 -Tc refrigeration temperature difference value is less than the preset refrigeration temperature difference value, and the preset refrigeration temperature difference value may range from -1℃ to -2℃;

[0070] If yes, it means that the actual freezing temperature Tc of the refrigerating chamber 7a is different from the set refrigerating temperature Tc 设 The deviation between them is small, and the heat capacity of the evaporator 4 and the cold capacity of the freezing chamber 7b are sufficient to cool the refrigerating chamber 7a, so that the actual freezing temperature Tc drops to the set refrigerating temperature Tc 设, so compressor 1 remains off;

[0071] If not, it means that the actual freezing temperature Tc of the refrigerating chamber 7a is different from the set refrigerating temperature Tc 设 The deviation between them is large, and the heat capacity of the evaporator 4 and the cold capacity of the freezing chamber 7b may not be enough to cool the refrigerating chamber 7a. It is necessary to choose whether to turn on the compressor 1 in combination with the changing trend of the refrigerating temperature difference.

[0072] This design can ensure that the refrigeration system provides sufficient cooling capacity, so that the refrigeration chamber 7a is lowered to the set refrigeration temperature, thereby ensuring the storage quality of food.

[0073] On this basis, the logic of selecting whether to start compressor 1 according to the changing trend of the refrigeration temperature difference is as follows:

[0074] Obtain the refrigeration temperature difference between the two tests;

[0075] Determine whether the refrigeration temperature difference value is reduced;

[0076] If not, the actual refrigeration temperature Tc of the refrigerating chamber 7a does not continue to drop, and the heat capacity of the evaporator 4 and the cold capacity of the freezing chamber 7b are insufficient to cool the refrigerating chamber 7a. At this time, the compressor 1 starts to operate, and the refrigeration system refrigerates again to provide sufficient cold capacity to reduce the actual refrigeration temperature Tc of the refrigerating chamber 7a.

[0077] If so, it means that the actual refrigeration temperature Tc of the refrigerating chamber 7a continues to drop, and the heat capacity of the evaporator 4 and the cold capacity of the freezing chamber 7b are sufficient to cool the refrigerating chamber 7a. At this time, the compressor 1 remains closed to reduce the energy consumption of the refrigeration system.

[0078] In the preferred embodiment, after the compressor 1 stops running, the fan 5 runs at the set speed, so that the airflow inside the refrigerator is stable, which can not only deliver cold air to the refrigerating chamber 7a in an orderly manner, so that the actual refrigerating temperature Tc drops steadily, but also reduce the temperature fluctuation of the freezing chamber 7b caused by the change of airflow.

[0079] like Figure 6 As shown, the actual refrigeration temperature Tc and the actual freezing temperature Td mentioned above are detected by their respective corresponding temperature sensors, and the temperature sensor, compressor 1, fan 5 and damper 6 are all connected to the controller of the refrigerator, and the controller executes the refrigerator control method.

[0080] During the operation of the refrigerator, the actual refrigeration temperature Tc of the refrigerator compartment and the actual freezing temperature Td of the freezer compartment are detected in real time. When the actual refrigeration temperature Tc and the actual freezing temperature Td change, the comparison result may be different. After each detection, the corresponding control logic will be reselected according to the current comparison result.

[0081] like Figure 2As shown, the control process is described in detail with an application example of the present invention. The refrigerator has two storage compartments, namely a refrigerator and a freezer. After the refrigerator is powered on, the specific steps are as follows:

[0082] Step S101, determining the temperature state of the storage compartment;

[0083] When Tc 设 - Tc>0 and Td 设 - When Td < 0, execute step S102;

[0084] When Tc 设 - Tc<0 and Td 设 - When Td>0, execute step S105;

[0085] When Tc 设 - Tc<0 and Td 设 - When Td < 0, the process returns to step S101 according to conventional control;

[0086] When Tc 设 - Tc>0 and Td 设 - When Td>0, the process returns to step S101 according to conventional control;

[0087] Step S102: Determine whether Td 设 - Td>preset freezing temperature difference value, if not, execute step S103, if yes, execute step S104;

[0088] Step S103, close the damper to maintain the current compressor operating speed, and return to step S101;

[0089] Step S104, close the damper, reduce the compressor speed by one gear, and return to step S101;

[0090] Step S105: the compressor stops running, the fan keeps running, and step S106 is executed;

[0091] Step S106: Determine whether Tc 设 - Tc>preset refrigeration temperature difference value, if yes, execute step S107, if no, execute step S108;

[0092] Step S107, the compressor remains stopped, the fan remains running, the damper remains open, and step S109 is executed;

[0093] Step S108, the compressor remains stopped, the fan remains running, the damper remains open, and the process returns to step S101;

[0094] Step S109, determine whether the refrigeration temperature difference value is reduced, if not, execute step S110, if yes, return to step S101;

[0095] Step S110: The compressor starts running, and the process returns to step S101.

[0096] It should be noted that the terms used above are only for describing specific embodiments and are not intended to limit exemplary embodiments according to the present invention. When the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof. The order of execution of actions, steps, etc. in the devices and methods shown in the specification and the accompanying drawings can be implemented in any order as long as there is no special explicit limitation on the order and the output of the previous processing is not used in the subsequent processing. Similar terms of order used for the convenience of description do not mean that they must be implemented in such an order.

[0097] Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such techniques, methods, and apparatus should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limiting. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0098] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A refrigerator control method, characterized in that: include: Detecting the actual refrigerating temperature Tc of the refrigerating chamber and the actual freezing temperature Td of the freezing chamber; Compare the actual refrigeration temperature Tc with the set refrigeration temperature Tc 设 , and the actual freezing temperature Td and the set freezing temperature Td 设 ; When Tc 设 - Tc>0 and Td 设 - When Td < 0, the fan of the evaporator chamber continues to operate and only supplies air to the freezing chamber, and the compressor continues to operate and according to Td 设 - The freezing temperature difference value of Td controls the speed of the compressor; and / or when Tc 设 - Tc<0 and Td 设 - When Td>0, the compressor stops running, and the fan of the evaporator chamber continues to run to supply air to the refrigerating chamber and the freezing chamber.

2. The refrigerator control method according to claim 1, characterized in that: The refrigerator control method further includes: When Tc 设 - Tc<0 and Td 设 - When Td>0, after the compressor stops running, determine whether Tc 设 - The refrigeration temperature difference value of Tc is less than the preset refrigeration temperature difference value; If yes, the compressor remains off; If not, the change trend of the refrigeration temperature difference value is used to select whether to start the compressor.

3. The refrigerator control method according to claim 2, characterized in that: Selecting whether to start the compressor according to the change trend of the refrigeration temperature difference value includes: Obtain the refrigeration temperature difference between the two tests; Determining whether the refrigeration temperature difference value is reduced; If not, the compressor starts running; If so, the compressor remains off.

4. The refrigerator control method according to claim 1, characterized in that: After the compressor stops running, the fan runs at a set speed.

5. The refrigerator control method according to claim 1, characterized in that: According to Td 设 The control of the speed of the compressor by the refrigeration temperature difference of -Td includes: Determine whether the freezing temperature difference value is greater than a preset freezing temperature difference value; If yes, reducing the speed of the compressor; If not, the speed of the compressor is maintained.

6. The refrigerator control method according to claim 5, characterized in that: When the compressor is turned on, the rotation speed of the fan is adjusted synchronously with the compressor.

7. The refrigerator control method according to claim 6, characterized in that: The speed gear of the fan matches the speed gear of the compressor, and the compressor is adjusted one gear each time.

8. Refrigerator, including: A refrigerator compartment, a freezer compartment and an evaporator chamber, wherein the evaporator chamber is provided with an evaporator and a fan, wherein the controller of the refrigerator executes the refrigerator control method according to any one of claims 1 to 7.

9. The refrigerator according to claim 8, characterized in that: The refrigerating chamber is provided with a refrigerating air inlet duct and a refrigerating air return duct which are connected to the evaporator cavity, and the freezing chamber is provided with a freezing air inlet duct and a freezing air return duct which are connected to the evaporator cavity. The fan is used to drive the airflow in the evaporating cavity to the refrigerating air inlet duct and the freezing air inlet duct, and the refrigerating air inlet duct is equipped with a damper which switches its on and off state.

10. The refrigerator according to claim 9, characterized in that: The wind resistance of the freezing air inlet duct is greater than the wind resistance of the freezing air inlet duct.

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