Control method of refrigeration equipment

Abstract

The present invention provides a control method for a refrigeration device. The refrigeration device includes a storage compartment and an air duct structure located at the rear side of the storage compartment, a first temperature sensor arranged in the storage compartment, and a second temperature sensor arranged in the air duct structure. The control method includes: during shutdown, when the temperature of the second temperature sensor is greater than the second preset temperature, judging whether the temperature of the first temperature sensor is greater than the first preset temperature, and the first preset temperature is greater than the second preset temperature; if yes, then controlling refrigeration, if no, judging whether the temperature of the second sensor is greater than the third preset temperature, and the third preset temperature is greater than the second preset temperature; if yes, then controlling refrigeration, and if no, then controlling shutdown. Such a setting can reduce errors, control temperature more accurately, improve refrigeration efficiency, and provide a better storage temperature for food.

Description

Technical Field

[0001] The present invention relates to a control method for refrigeration equipment, and in particular to a more intelligent control method for refrigeration equipment. Background Art

[0002] As the main carrier of household food storage, refrigerators are necessary equipment to ensure the nutrition and health of food. With the continuous development of society, intelligent transformation is the inevitable development direction of refrigerators. At present, whether it is a single-system refrigerator or a multi-system refrigerator, the refrigerator compartment has only one temperature sensor to detect the temperature, and it is impossible to obtain more accurate temperature data during the operation of the refrigerator, that is, the fault tolerance of a single temperature sensor is poor.

[0003] In addition, during the production process, refrigerators often differ due to errors in components and production processes, and consistency cannot be achieved. For example, in actual production, deformation of the refrigeration duct, improper installation of sensors for duct production components, and slight foaming are often encountered. This will cause the air volume at the temperature sensor in the refrigerator to change, and the judgment is not accurate enough.

[0004] In view of this, it is necessary to improve the control method of the existing refrigeration equipment to solve the above problems. Summary of the invention

[0005] The object of the present invention is to provide a control method for a refrigeration device that is more intelligent.

[0006] To achieve the above object, the present invention provides a control method for a refrigeration device, the refrigeration device comprising a storage room and an air duct structure located at the rear side of the storage room, a first temperature sensor disposed in the storage room, and a second temperature sensor disposed in the air duct structure, the control method comprising:

[0007] During shutdown, when the temperature of the second temperature sensor is greater than the second preset temperature, it is determined whether the temperature of the first temperature sensor is greater than the first preset temperature, and the first preset temperature is greater than the second preset temperature;

[0008] If yes, control cooling, if no, determine whether the temperature of the second sensor is greater than a third preset temperature, the third preset temperature being greater than the second preset temperature;

[0009] If yes, then control cooling, if no, then control shutdown.

[0010] As a further improvement of the present invention, the temperature difference between the third preset temperature and the second preset temperature is in the range of 2-3°C.

[0011] As a further improvement of the present invention, during cooling, it is determined whether the temperature of the second temperature sensor is less than a second preset temperature;

[0012] If yes, determine whether the temperature of the first temperature sensor is less than the first preset temperature; if no, continue cooling.

[0013] As a further improvement of the present invention, when the temperature of the first temperature sensor is lower than the first preset temperature, the machine is controlled to shut down;

[0014] When the temperature of the first temperature sensor is greater than the first preset temperature, it is determined whether the temperature of the second temperature sensor is less than a fourth preset temperature, wherein the fourth preset temperature is less than the second preset temperature;

[0015] If yes, the control stops, if no, the cooling continues.

[0016] As a further improvement of the present invention, the temperature difference between the fourth preset temperature and the second preset temperature is in the range of 2-3°C.

[0017] As a further improvement of the present invention, the first preset temperature includes a first preset start-up temperature and a first preset shutdown temperature, and the first preset start-up temperature is greater than the first preset shutdown temperature, the second preset temperature includes a second preset start-up temperature and a second preset shutdown temperature, and the second preset start-up temperature is greater than the second preset shutdown temperature, during shutdown, the first preset temperature is the first preset start-up temperature, and the second preset temperature is the second preset start-up temperature, during cooling, the first preset temperature is the first preset shutdown temperature, and the second preset temperature is the second preset shutdown temperature.

[0018] As a further improvement of the present invention, the temperature difference between the first preset startup temperature and the first preset shutdown temperature is in the range of 1-2°C.

[0019] As a further improvement of the present invention, the temperature difference range between the second preset startup temperature and the second preset shutdown temperature is 1-2°C.

[0020] As a further improvement of the present invention, the control method includes multiple temperature gears, the first preset temperature and the second preset temperature of the multiple temperature gears gradually increase, and the difference range between the first preset temperature and the second preset temperature is 17-21°C.

[0021] As a further improvement of the present invention, the storage compartment is a refrigerating compartment, the air duct structure is a refrigerating air duct, and the second temperature sensor is arranged at a damper in the refrigerating air duct.

[0022] Compared with the prior art, the present invention has the following beneficial effects: by respectively setting the first temperature sensor and the second temperature sensor in the storage room and the air duct structure of the refrigeration equipment, the temperature of the storage room and the air duct structure can be obtained, which can more truly reflect the working state of the refrigeration equipment, reduce errors, more accurately control the temperature, and achieve a balance between efficacy and power consumption. It can also avoid inaccurate judgments caused by production errors, improve refrigeration efficiency, and provide a better storage temperature for food. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The specific implementation of the present invention is further described in detail below with reference to the accompanying drawings, wherein:

[0024] Figure 1 It is a schematic diagram of the second temperature sensor of the present invention being located at the air outlet.

[0025] Figure 2 It is a schematic diagram of the second temperature sensor of the present invention being located at the air door.

[0026] Figure 3 It is a flow chart of the control method of the refrigeration equipment of the present invention. DETAILED DESCRIPTION

[0027] The present invention will be described in detail below in conjunction with the specific embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and any structural, methodological, or functional changes made by a person skilled in the art based on these embodiments are all within the scope of protection of the present invention.

[0028] Please refer to Figures 1 to 3 The control method of the refrigeration equipment of the present invention is shown, and the refrigeration equipment includes a storage room and a duct structure 1 located at the rear side of the storage room, a first temperature sensor 2 arranged in the storage room, and a second temperature sensor 3 arranged in the duct structure 1.

[0029] Specifically, in the present embodiment, the refrigeration device is a refrigerator, and the refrigerator includes a single-compartment refrigerator, a top-and-bottom door refrigerator, a side-by-side door refrigerator, etc. Of course, in other embodiments, the refrigeration device may also be a freezer or a wine cabinet.

[0030] In this embodiment, the storage compartment is a refrigerator compartment, the refrigeration device includes a sensor installation slot disposed in the refrigerator compartment, and the first temperature sensor 2 is disposed in the sensor installation slot. The air duct structure 1 is a refrigeration air duct, the air duct structure 1 includes a damper 11 and a plurality of air outlets 12, and the second temperature sensor 3 can be disposed at the damper 11, or at the air outlet 12, or of course, at other positions between the damper 11 and the air outlet 12.

[0031] Specifically, the control method includes:

[0032] During shutdown, when the temperature of the second temperature sensor 3 is greater than the second preset temperature, it is determined whether the temperature of the first temperature sensor 2 is greater than the first preset temperature, wherein the first preset temperature is greater than the second preset temperature;

[0033] If yes, control cooling; if no, determine whether the temperature of the second sensor is greater than a third preset temperature, wherein the third preset temperature is greater than the second preset temperature;

[0034] If yes, then control cooling, if no, then control shutdown.

[0035] Therefore, by jointly judging the temperature in the cold storage room and the temperature in the air duct structure 1, when both exceed the preset temperature, the refrigeration is controlled to make the control more precise. Moreover, in actual production, deformation of the cold storage air duct, improper installation of sensors of air duct production components, and micro-bulging of foaming are often encountered. At this time, the air volume at the first temperature sensor 2 will change, causing the wind to accumulate at the position of the first temperature sensor 2, and the temperature will rise slowly, which will cause the temperature of the food in the cold storage room to rise too high, which is not conducive to storage. In other words, the temperature detected by the first temperature sensor 2 is not necessarily accurate, and the second temperature sensor 3 is arranged in the air duct structure 1 and will not be affected by the above structure.

[0036] Therefore, when the temperature of the first temperature sensor 2 is lower than the first preset temperature, the above situation can be avoided by further judging whether the temperature of the second temperature sensor 3 is higher than the third preset temperature, so as to more accurately and reasonably control the operation of the refrigeration equipment, improve the refrigeration efficiency, and provide a better storage temperature for the food.

[0037] When the refrigeration device is in the refrigeration period, determining whether the temperature of the second temperature sensor 3 is less than a second preset temperature;

[0038] If yes, it is determined whether the temperature of the first temperature sensor 2 is less than the first preset temperature; if no, the cooling is continued.

[0039] When the temperature of the first temperature sensor 2 is lower than the first preset temperature, the machine is controlled to shut down; when the temperature of the first temperature sensor 2 is higher than the first preset temperature, it is determined whether the temperature of the second temperature sensor 3 is lower than the fourth preset temperature, wherein the fourth preset temperature is lower than the first preset temperature;

[0040] If yes, the control stops, if no, the cooling continues.

[0041] Therefore, by jointly judging the temperature in the cold storage room and the temperature in the air duct structure 1, when both are lower than the preset temperature, the system is controlled to shut down, so that the control is more precise and the energy consumption is reduced.

[0042] Furthermore, when the temperature of the first temperature sensor 2 is greater than the first preset temperature, it is further determined whether the temperature of the second temperature sensor 3 is less than the fourth preset temperature. The determination here is based on the consideration that when the air duct is deformed or the foaming is slightly bulging, it is easy to cause the air outlet 12 to become smaller, which in turn causes the air volume at the first temperature sensor 2 to be small and not reach the shutdown point, but the space temperature is already low, and the food is prone to freezing. Therefore, a protection temperature lower than the second preset temperature is set, that is, the fourth preset temperature, to avoid the above situation and reduce the risk of food freezing.

[0043] In this embodiment, the temperature difference between the third preset temperature and the second preset temperature is in the range of 2-3° C. The temperature difference between the fourth preset temperature and the second preset temperature is in the range of 2-3° C. Both are preferably 2° C.

[0044] In this embodiment, the first preset temperature includes a first preset startup temperature and a first preset shutdown temperature, and the first preset startup temperature is greater than the first preset shutdown temperature, and the second preset temperature includes a second preset startup temperature and a second preset shutdown temperature, and the second preset startup temperature is greater than the second preset shutdown temperature.

[0045] Among them, during the shutdown period, the first preset temperature is the first preset startup temperature, and the second preset temperature is the second preset startup temperature. During the cooling period, the first preset temperature is the first preset shutdown temperature, and the second preset temperature is the second preset shutdown temperature.

[0046] That is, during shutdown, the temperature of the first temperature sensor 2 and the temperature of the second temperature sensor 3 are compared with the first preset startup temperature and the second preset startup temperature, respectively; during cooling, the temperature of the first temperature sensor 2 and the temperature of the second temperature sensor 3 are compared with the first preset shutdown temperature and the second preset shutdown temperature, respectively.

[0047] In this embodiment, the temperature difference between the first preset startup temperature and the first preset shutdown temperature is in the range of 1-2°C, and the temperature difference between the second preset startup temperature and the second preset shutdown temperature is in the range of 1-2°C, and both are preferably 1°C.

[0048] Therefore, by setting different preset startup temperatures and preset shutdown temperatures, on the one hand, it is easier to control the temperature of the refrigeration equipment and prevent the system from failing to recognize the preset startup temperature and the preset shutdown temperature from being the same, which can cause a malfunction. On the other hand, it is also considered that a temperature difference of 1° will not make the temperature of the refrigerator too low, affecting the quality of the food, and can also reduce energy consumption. At the same time, setting the temperature difference can avoid repeated startup and shutdown of the refrigeration equipment in a short period of time and increase its working life.

[0049] In this embodiment, the control method includes multiple temperature gears, the first preset temperature and the second preset temperature of the multiple temperature gears gradually increase, and the difference between the first preset temperature and the second preset temperature is in the range of 17-21° C. That is, the temperature difference between the first preset startup temperature and the second preset startup temperature is in the range of 17-21° C., and the temperature difference between the first preset shutdown temperature and the second preset shutdown temperature is in the range of 17-21° C., and both are preferably 19° C.

[0050] And at the same gear, the temperature difference between the first preset startup temperature and the first preset shutdown temperature is the same as the temperature difference between the second preset startup temperature and the second preset shutdown temperature, and the temperature difference between the first preset startup temperature and the second preset startup temperature is the same as the temperature difference between the first preset shutdown temperature and the second preset shutdown temperature.

[0051] For ease of understanding, the temperature checked by the first temperature sensor 2 is marked as SNR1, the temperature checked by the second temperature sensor 3 is marked as SNR2, the first preset temperature is marked as T1, the second preset temperature is marked as T2, the third preset temperature is marked as T3, and the fourth preset temperature is marked as T4. It should be noted that in the shutdown stage, the first preset temperature is T1, which is the first preset startup temperature, and the second preset temperature is T2, which is the second preset startup temperature. In the cooling stage, the first preset temperature is T1, which is the first preset shutdown temperature, and the second preset temperature is T2, which is the second preset shutdown temperature.

[0052] Take the 5th gear in the following table as an example:

[0053] Gear 1 2 3 4 5 6 7 8 9 T1 1 / 0 2 / 1 3 / 2 4 / 3 5 / 4 6 / 5 7 / 6 8 / 7 9 / 8 T2 -18 / -19 -17 / -18 -16 / -17 -15 / -16 -14 / -15 -13 / -14 -12 / -13 -11 / -12 -10 / -11

[0054] In this gear, the first preset start-up temperature and the first preset shutdown temperature of the first preset temperature T1 are 5°C and 4°C respectively, and the second preset start-up temperature and the second preset shutdown temperature of the second preset temperature T2 are -14°C and -15°C respectively.

[0055] The third preset temperature T3 is -12°C, which is 2°C higher than the second preset temperature T2, while the fourth preset temperature T4 is -17°C, which is 2°C lower than the second preset temperature T2. It should be noted that the third preset temperature T3 is in the shutdown stage, so the second preset temperature T2 is the second preset startup temperature -14°C. The fourth preset temperature T4 is in the cooling stage, so the second preset temperature T2 is the second preset shutdown temperature -15°C. Therefore, the temperature difference of 2°C makes the third preset temperature T3 and the fourth preset temperature T4 -12°C and -17°C respectively.

[0056] In summary, the technical solution provided by the present invention can obtain the temperature of the storage room and the air duct structure 1 by respectively setting the first temperature sensor 2 and the second temperature sensor 3 in the storage room and the air duct structure 1 of the refrigeration equipment, which can more truly reflect the working state of the refrigeration equipment, reduce errors, control the temperature more accurately, and achieve a balance between efficacy and power consumption. It can also avoid inaccurate judgment caused by raw tea errors, improve refrigeration efficiency, and provide a better storage temperature for food.

[0057] Of course, the control method of the present invention is not only applicable to the temperature control of a refrigerating chamber, but also applicable to other chambers such as a freezing chamber and a temperature-changing chamber.

[0058] It should be understood that although this specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each implementation mode may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0059] The series of detailed descriptions listed above are only specific descriptions of feasible implementation methods of the present invention. They are not intended to limit the scope of protection of the present invention. Any equivalent implementation methods or changes that do not deviate from the technical spirit of the present invention should be included in the scope of protection of the present invention.

Claims

1. A control method for refrigeration equipment, characterized in that: The refrigeration device includes a storage room and an air duct structure located at the rear side of the storage room, a first temperature sensor disposed in the storage room, and a second temperature sensor disposed in the air duct structure, and the control method includes: During shutdown, when the temperature of the second temperature sensor is greater than the second preset temperature, it is determined whether the temperature of the first temperature sensor is greater than the first preset temperature, and the first preset temperature is greater than the second preset temperature; If yes, control cooling, if no, determine whether the temperature of the second sensor is greater than a third preset temperature, the third preset temperature being greater than the second preset temperature; If yes, then control cooling, if no, then control shutdown; Wherein, the storage compartment is a refrigerating compartment, the air duct structure is a refrigerating air duct, and the second temperature sensor is arranged at the air door in the refrigerating air duct.

2. The control method of refrigeration equipment according to claim 1, characterized in that: The temperature difference between the third preset temperature and the second preset temperature is in the range of 2-3°C.

3. The control method of refrigeration equipment according to claim 1, characterized in that: During cooling, determining whether the temperature of the second temperature sensor is less than a second preset temperature; If yes, determine whether the temperature of the first temperature sensor is less than the first preset temperature; if no, continue cooling.

4. The control method of the refrigeration equipment according to claim 3, characterized in that: When the temperature of the first temperature sensor is lower than the first preset temperature, the machine is controlled to shut down; When the temperature of the first temperature sensor is greater than the first preset temperature, it is determined whether the temperature of the second temperature sensor is less than a fourth preset temperature, wherein the fourth preset temperature is less than the second preset temperature; If yes, the control stops, if no, the cooling continues.

5. The control method of refrigeration equipment according to claim 4, characterized in that: The temperature difference between the fourth preset temperature and the second preset temperature is in the range of 2-3°C.

6. The control method for a refrigeration device according to any one of claims 1 to 5, characterized in that: The first preset temperature includes a first preset start-up temperature and a first preset shutdown temperature, and the first preset start-up temperature is greater than the first preset shutdown temperature. The second preset temperature includes a second preset start-up temperature and a second preset shutdown temperature, and the second preset start-up temperature is greater than the second preset shutdown temperature. During shutdown, the first preset temperature is the first preset start-up temperature, and the second preset temperature is the second preset start-up temperature. During cooling, the first preset temperature is the first preset shutdown temperature, and the second preset temperature is the second preset shutdown temperature.

7. The control method of refrigeration equipment according to claim 6, characterized in that: The temperature difference between the first preset startup temperature and the first preset shutdown temperature is in the range of 1-2°C.

8. The control method of refrigeration equipment according to claim 6, characterized in that: The temperature difference between the second preset startup temperature and the second preset shutdown temperature is in the range of 1-2°C.

9. The control method of refrigeration equipment according to claim 1, characterized in that: The control method includes a plurality of temperature gears, wherein the first preset temperature and the second preset temperature of the plurality of temperature gears gradually increase, and the difference range between the first preset temperature and the second preset temperature is 17-21°C.

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