Control method and device for refrigerating box, refrigerating box and computer readable storage medium

Abstract

The invention relates to the technical field of refrigeration, and discloses a control method for a refrigerator, the refrigerator comprises a refrigerator body, and a refrigeration space is constructed in the refrigerator body; the refrigerant circulating system comprises a compressor, a condenser, a throttling device and an intermediate heat exchanger which are connected in sequence; the water circulation system comprises a water storage box, a water pump and an evaporator which are connected in sequence; the intermediate heat exchanger is arranged in the water storage box; the control method comprises the steps that a second temperature range is set according to the set refrigeration temperature, and a first temperature range is set according to the set refrigeration temperature and the target dew point temperature corresponding to the set refrigeration humidity; the compressor is controlled to operate, so that the temperature in the water storage box is within the first temperature range; and the water pump is controlled to operate, so that the temperature in the refrigeration space is within the second temperature range. The temperature and humidity in the box can be stably and accurately regulated and controlled, and the actual refrigeration effect of objects in the box can be guaranteed. The invention further discloses a control device for the refrigerating box, the refrigerating box and a computer readable storage medium.

Description

Technical Field

[0001] The present application relates to the field of refrigeration technology, for example, to a control method and device for a refrigerated box, a refrigerated box, and a computer-readable storage medium. Background Art

[0002] At present, refrigeration products usually use refrigerant (such as Freon) to absorb heat by vaporization to achieve refrigeration. For some medical refrigeration equipment, the box is often used to store some high-value and sensitive items (such as medicines and vaccines), so it is necessary to ensure that the temperature and humidity in the box are stable at all times. However, the temperature and humidity control accuracy of the refrigerant cooling method is low, and the temperature and humidity in the box fluctuate greatly, which can easily cause the actual refrigeration environment to be hot and cold. To this end, the relevant technology proposes a mobile air conditioning system, including: a first heat exchange unit, the first heat exchange unit includes a first fan, a first heat exchanger, and a first heat exchange flow path connected to the first heat exchanger, and the first fan is configured to drive the airflow to exchange heat with the first heat exchanger; a second heat exchange unit, the second heat exchange unit includes a second fan, a second heat exchanger, and a second heat exchange flow path connected to the second heat exchanger, and the second fan is configured to drive the airflow to exchange heat with the second heat exchanger; the second heat exchange flow path is configured to be able to exchange heat with the first heat exchange flow path in the form of a partition.

[0003] In the process of implementing the embodiments of the present disclosure, it is found that there are at least the following problems in the related art:

[0004] The relevant technology can avoid the problem of alternating hot and cold temperatures, but the humidity control accuracy is poor, and the humidity in the box may exceed the standard, thus affecting the actual refrigeration effect of the items.

[0005] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present application, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention

[0006] In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not an extensive review, nor is it intended to identify key / critical components or delineate the scope of protection of these embodiments, but rather serves as a prelude to the detailed description that follows.

[0007] The embodiments of the present disclosure provide a control method and device for a refrigerated box, a refrigerated box, and a computer-readable storage medium, which can stably and accurately regulate the temperature and humidity in the box, thereby ensuring the actual refrigeration effect of the items in the box.

[0008] In some embodiments, the cold storage box includes a box body with a refrigerated space inside; a refrigerant circulation system including a compressor, a condenser, a throttling device and an intermediate heat exchanger connected in sequence; a water circulation system including a water storage box, a water pump and an evaporator connected in sequence; wherein the intermediate heat exchanger is arranged in the water storage box; the control method includes: setting a second temperature range according to a set refrigerated temperature, and setting a first temperature range according to a target dew point temperature corresponding to the set refrigerated temperature and the set refrigerated humidity; controlling the operation of the compressor so that the temperature in the water storage box is within the first temperature range; controlling the operation of the water pump so that the temperature in the refrigerated space is within the second temperature range.

[0009] In some embodiments, the device includes: a processor and a memory storing program instructions, and the processor is configured to execute the above-mentioned control method for a refrigerator when running the program instructions.

[0010] In some embodiments, the refrigerator includes: a box body with a refrigerated space inside; a refrigerant circulation system, including a compressor, a condenser, a throttling device and an intermediate heat exchanger connected in sequence; a water circulation system, including a water storage box, a water pump and an evaporator connected in sequence; wherein the intermediate heat exchanger is arranged in the water storage box; the above-mentioned control device for the refrigerator is installed in the box body.

[0011] In some embodiments, the computer-readable storage medium stores program instructions, and when the program instructions are executed, the computer executes the above-mentioned control method for the refrigerator.

[0012] The control method, device, and computer-readable storage medium for a refrigerator provided in the embodiments of the present disclosure can achieve the following technical effects:

[0013] When the refrigerator starts to refrigerate, the set refrigeration temperature and set refrigeration humidity set by the user or the item requirements are first determined, and the appropriate first temperature range and second temperature range are determined accordingly. Among them, the second temperature range is set around the set refrigeration temperature to meet the temperature requirements of the items in the box, and the first temperature range is set around the target dew point temperature corresponding to the set refrigeration temperature and the set refrigeration humidity to meet the humidity requirements of the items in the box. Then the embodiment of the present disclosure controls the operation of the compressor so that the refrigerant in the intermediate heat exchanger evaporates and absorbs heat, thereby accurately reducing the water temperature in the water storage box, so that the water temperature is maintained within the first temperature range, so as to achieve accurate control of the humidity in the box. Subsequently, the water pump is controlled to operate to release the cold stored in the water storage box through the evaporator, thereby accurately reducing the air temperature in the refrigerated space, so that the temperature in the box is maintained within the second temperature range, so as to achieve accurate control of the temperature in the box. As a result, the embodiment of the present disclosure can stably and accurately regulate the temperature and humidity in the box, which is conducive to ensuring the actual refrigeration effect of the items in the box.

[0014] The above general description and the following description are exemplary and explanatory only and are not intended to limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] One or more embodiments are exemplarily described by corresponding drawings, which do not limit the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements, and the drawings do not constitute a scale limitation, and wherein:

[0016] Figure 1 is a schematic structural diagram of a refrigerator provided by an embodiment of the present disclosure;

[0017] Figure 2 is a schematic structural diagram of another refrigerator provided by an embodiment of the present disclosure;

[0018] Figure 3 is a schematic structural diagram of another refrigerator provided by an embodiment of the present disclosure;

[0019] Figure 4 is a schematic diagram of a control method for a refrigerator provided by an embodiment of the present disclosure;

[0020] Figure 5 is a schematic diagram of another control method for a refrigerator provided by an embodiment of the present disclosure;

[0021] Figure 6 is a schematic diagram of another control method for a refrigerator provided by an embodiment of the present disclosure;

[0022] Figure 7 It is a schematic diagram of a control device for a refrigerator provided in an embodiment of the present disclosure.

[0023] Reference numerals:

[0024] 10: cabinet; 11: refrigerated space; 20: refrigerant circulation system; 21: compressor; 22: condenser; 23: throttling device; 24: intermediate heat exchanger; 25: condensing fan; 26: filtering device; 27: three-way valve; 28: gas-liquid separator; 210: exhaust pipe; 220: intake pipe; 230: bypass pipe; 30: water circulation system; 31: water storage box; 32: water pump; 33: evaporator; 34: evaporating fan; 40: control device for the refrigerator; 41: processor; 42: memory; 43: communication interface; 44: bus. DETAILED DESCRIPTION

[0025] In order to be able to understand the features and technical contents of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure is described in detail below in conjunction with the accompanying drawings. The attached drawings are for reference only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.

[0026] The terms "first", "second", etc. in the specification and claims of the embodiments of the present disclosure and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged where appropriate, so that the embodiments of the embodiments of the present disclosure described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0027] Unless otherwise stated, the term "plurality" means two or more.

[0028] In the embodiment of the present disclosure, the character " / " indicates that the preceding and following objects are in an "or" relationship. For example, A / B indicates: A or B.

[0029] The term "and / or" is a description of the association relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or, A and B.

[0030] The term "correspondence" may refer to an association relationship or a binding relationship. The correspondence between A and B means that there is an association relationship or a binding relationship between A and B.

[0031] Combination Figure 1-3 As shown, the embodiment of the present disclosure provides a refrigerator, including: a box body 10, a refrigerant circulation system 20 and a water circulation system 30. The box body 10 has a refrigerated space 11 inside. The refrigerant circulation system 20 includes a compressor 21, a condenser 22, a throttling device 23 and an intermediate heat exchanger 24 connected in sequence. The water circulation system 30 includes a water storage box 31, a water pump 32 and an evaporator 33 connected in sequence. Among them, the intermediate heat exchanger 24 is arranged in the water storage box 31.

[0032] With the refrigerator provided by the embodiment of the present disclosure, the refrigerant circulation system 20 can exchange heat with the environment outside the refrigerator through the condenser 22, and exchange heat with the water storage box 31 through the intermediate heat exchanger 24. The refrigerant evaporates and absorbs heat in the intermediate heat exchanger 24, thereby reducing the water temperature in the water storage box 31 to store the cold energy in the water storage box 31. The water circulation system 30 can then start the water pump 32 to transfer the stored cold energy to the evaporator 33 and release it into the refrigerated space 11. In this way, the temperature and humidity in the refrigerator can be regulated, which is conducive to ensuring the actual refrigeration effect of the items in the refrigerator.

[0033] Optionally, the refrigerator further comprises: an evaporation fan 34, which is arranged relative to the evaporator 33. In this way, the evaporation fan 34 can drive the air in the box to circulate back and forth through the evaporator 33, thereby improving the heat exchange efficiency of the evaporator 33 and facilitating rapid reduction of the temperature and humidity in the box.

[0034] Optionally, the refrigerator further comprises: a condensing fan 25, which is arranged relative to the condenser 22. In this way, the condensing fan 25 can drive the condenser 22 to transfer the released heat to the environment outside the box in the form of convection, thereby improving the heat exchange efficiency of the condenser 22 and facilitating the rapid reduction of the temperature and humidity in the box.

[0035] Optionally, the refrigerator further comprises a filter device 26, which is disposed between the condenser 22 and the throttling device 24. In this way, the filter device 26 can be used to filter impurities in the refrigerant, thereby preventing the throttling device 24 from being blocked.

[0036] Optionally, the refrigerant circulation system 20 further includes a bypass line 230 flowing through the evaporator 33, one end of which is connected to the exhaust port of the compressor 21, and the other end of which is connected to the intake port of the compressor 21. In this way, by setting the bypass line 230, the heat of the high-temperature refrigerant discharged by the compressor 21 can be used to assist the evaporator 33 in defrosting, thereby preventing the evaporator 33 from freezing due to the water temperature being too low, which is conducive to ensuring the reliable operation of the water circulation system 20 and reducing the impact on the temperature and humidity in the box.

[0037] Optionally, the refrigerant circulation system 20 includes an exhaust pipeline 210 and an air intake pipeline 220, and a three-way valve 27 is provided at the connection point between the exhaust pipeline 210 and the bypass pipeline 230. In this way, the specific flow direction of the refrigerant discharged from the compressor 21 can be controlled by the three-way valve 27, thereby changing the operation mode of the refrigerant circulation system 20. By connecting the three-way valve 27 to the bypass pipeline 230, the evaporator 33 can be assisted in defrosting, which is conducive to ensuring the reliable operation of the water circulation system 20 and reducing the impact on the temperature and humidity in the box.

[0038] Optionally, a gas-liquid separator 28 is provided on the bypass line 230. In this way, the gas-liquid separator 28 can prevent the liquid refrigerant from flowing back to the compressor 10 and causing liquid hammer, so as to ensure the safe operation of the compressor 10.

[0039] Optionally, the refrigerator further comprises a humidifying device, which is arranged in the box body 10. In this way, when the humidity in the box is too low, the humidifying device can be started to compensate for the humidity, thereby avoiding the actual refrigeration effect of the items being affected by long-term drying in the box.

[0040] Optionally, the refrigerator further comprises a heating device, which is arranged in the box body 10. In this way, when the temperature and humidity in the box are too low, the heating device can be started to compensate for the temperature and humidity, thereby avoiding the actual refrigeration effect of the items being affected by long-term dryness or long-term low temperature in the box.

[0041] Optionally, the cold storage medium in the water storage box 31 is distilled water. In this way, the distilled water in the water storage box 31 can absorb and store the cold energy produced by the intermediate heat exchanger 24, and continuously circulate in the water circulation system 30 to transfer this part of the cold energy, and finally reasonably release the cold energy required for refrigerating the items in the box through the evaporator 33, thereby realizing the precise control of the temperature and humidity in the box. In this way, the control accuracy is relatively high by using distilled water for cooling, which is conducive to reducing the fluctuation of the temperature and humidity in the box.

[0042] Furthermore, the cold storage medium in the water storage box 31 can also be set in combination with the items in the refrigerated space. For example, when the items stored in the refrigerated space require a lower refrigeration setting temperature, in order to prevent the distilled water (with a higher freezing point) in the water storage box 31 from freezing, high-concentration ethylene glycol (with a lower freezing point) can also be used as the cold storage medium in the water storage box 31 to prevent the water circulation system 20 from being unable to operate normally due to freezing, which is beneficial to ensuring the actual refrigeration effect of the items in the box.

[0043] Optionally, the refrigerator further includes a control device 40 for the refrigerator. The control device 40 for the refrigerator is installed in the box body 10 and is electrically connected to the compressor 21, the water pump 32 and the three-way valve 27. The installation relationship described here is not limited to placement inside the box body 10, but also includes installation connections with other components of the refrigerator, including but not limited to physical connections, electrical connections or signal transmission connections. In this way, the embodiment of the present disclosure can execute the corresponding control method through the control device 40 to improve the control accuracy of the temperature and humidity in the box.

[0044] Based on the above refrigerator, combined with Figure 4 As shown, the embodiment of the present disclosure provides a control method for a refrigerator, comprising:

[0045] S101, the control device sets the second temperature range according to the set refrigeration temperature, and sets the first temperature range according to the target dew point temperature corresponding to the set refrigeration temperature and the set refrigeration humidity.

[0046] S102, the control device controls the compressor to operate so that the temperature in the water storage box is within a first temperature range.

[0047] S103, the control device controls the water pump to operate so that the temperature in the refrigerated space is within a second temperature range.

[0048] The control method for a refrigerated box provided by the embodiment of the present disclosure first determines the set refrigerated temperature and set refrigerated humidity set by the user or the item requirement, and determines the appropriate first temperature range and second temperature range accordingly. Among them, the second temperature range is set around the set refrigerated temperature to meet the temperature requirements of the items in the box, and the first temperature range is set around the target dew point temperature corresponding to the set refrigerated temperature and the set refrigerated humidity to meet the humidity requirements of the items in the box. Then the embodiment of the present disclosure controls the operation of the compressor to make the refrigerant in the intermediate heat exchanger evaporate and absorb heat, thereby accurately reducing the water temperature in the water storage box, so that the water temperature is maintained within the first temperature range, so as to achieve accurate control of the humidity in the box. Subsequently, the water pump is controlled to operate to release the cold stored in the water storage box through the evaporator, thereby accurately reducing the air temperature in the refrigerated space, so that the temperature in the box is maintained within the second temperature range, so as to achieve accurate control of the temperature in the box. Therefore, the embodiment of the present disclosure can stably and accurately regulate the temperature and humidity in the box, which is conducive to ensuring the actual refrigeration effect of the items in the box.

[0049] Optionally, the control device sets the second temperature range according to the set refrigeration temperature, including: the control device determines the corresponding second temperature deviation according to the items in the refrigeration space; the control device respectively calculates the sum and difference of the set refrigeration temperature and the second temperature deviation to obtain the upper limit and lower limit of the second temperature range.

[0050] In this way, the embodiment of the present disclosure can determine the deviation of the control temperature in the box relative to the set refrigeration temperature in combination with the refrigeration characteristics of the items in the box, and then reasonably set the second temperature range required for refrigeration of the items in the box to better ensure the actual refrigeration effect of the items in the box.

[0051] For example, when the items in the refrigerated space are vaccines, the active ingredients in the vaccines are more sensitive to temperature changes and are easily affected by temperature fluctuations, causing them to fail. Therefore, the disclosed embodiment can set a relatively smaller second temperature deviation to set a more precise second temperature range, so as to meet the strict requirements of vaccines for refrigerated temperature. In the case where the items in the refrigerated space are medicines, the medicines have a certain sensitivity to temperature changes, but they are far less strict than vaccines, and usually will not fail immediately due to fluctuations in refrigerated temperature. Therefore, the disclosed embodiment can set a relatively large second temperature deviation to set a relatively wide second temperature range, so as to meet the basic requirements of medicines for refrigerated temperature and reduce the difficulty of achieving precise temperature control.

[0052] Optionally, the control device sets the first temperature range according to the target dew point temperature corresponding to the set refrigerated temperature and the set refrigerated humidity, including: the control device determines the corresponding target dew point temperature according to the set refrigerated temperature and the set refrigerated humidity; the control device determines the corresponding first temperature deviation according to the items in the refrigerated space; the control device respectively calculates the sum and difference of the target dew point temperature and the first temperature deviation, and obtains the upper limit and lower limit of the first temperature range.

[0053] In this way, the embodiment of the present disclosure can determine the deviation of the controlled humidity in the box relative to the set refrigeration humidity in combination with the refrigeration characteristics of the items in the box, and then reasonably set the first temperature range corresponding to the water temperature in the water storage box to ensure accurate dehumidification in the box, thereby better ensuring the actual refrigeration effect of the items in the box.

[0054] For example, when the items in the refrigerated space are vaccines, the active ingredients in the vaccines are more sensitive to refrigerated humidity and are easily affected by humidity, causing them to fail. Therefore, the embodiment of the present disclosure can set a relatively smaller first temperature deviation to set a more precise first temperature range, so as to improve the control accuracy of dehumidification in the box to meet the strict requirements of vaccines for refrigerated humidity. In the case where the items in the refrigerated space are medicines, the medicines have a certain sensitivity to refrigerated humidity, but it is far less strict than that of vaccines, and they usually do not fail due to inappropriate refrigerated humidity. Therefore, the embodiment of the present disclosure can set a relatively large first temperature deviation to set a relatively wide first temperature range, so as to reduce the difficulty of achieving precise dehumidification, while meeting the basic requirements of medicines for refrigerated humidity.

[0055] Optionally, the control device calculates the sum and difference of the target dew point temperature and the first temperature deviation respectively, and after obtaining the upper limit and lower limit of the first temperature range, it also includes: the control device obtains a temperature correction value; the control device calculates the difference between the upper limit and lower limit of the first temperature range and the temperature correction value, and obtains a corrected first temperature range.

[0056] In this way, considering the sealing and heat preservation limitations of the refrigerator box, it is inevitable that there will be leakage of cold. In the embodiment of the present disclosure, a temperature correction value can be set in advance, and the original first temperature range can be reasonably corrected by subtracting the temperature correction value. This can reduce the adverse effects of the leakage of cold on the temperature and humidity in the box, which is conducive to better ensuring the refrigeration and dehumidification effects in the box.

[0057] Optionally, the control device controls the operation of the compressor so that the temperature in the water storage box is within a first temperature range, including: when the temperature in the water storage box is greater than the upper limit value of the first temperature range, the control device controls the compressor to operate at a maximum speed; or, when the temperature in the water storage box is within the first temperature range, the control device controls the operation of the compressor according to the temperature outside the refrigerator; or, when the temperature in the water storage box is less than the lower limit value of the first temperature range, the control device controls the compressor to stop operating.

[0058] In this way, when the temperature in the water storage box is greater than the upper limit of the first temperature range, the water temperature in the water storage box is high. At this time, the cold capacity stored in the water storage box is insufficient, and the refrigeration and dehumidification effects in the box are poor, resulting in the delay in meeting the temperature and humidity requirements for refrigerating items. Therefore, the disclosed embodiment can control the compressor to run at the maximum speed, thereby improving the refrigeration efficiency of the refrigerant circulation system, so that the intermediate heat exchanger can produce more cold capacity and store it in the water storage box, which is conducive to quickly improving the refrigeration and dehumidification effects in the box.

[0059] When the temperature in the water storage box is lower than the lower limit of the first temperature range, the water temperature in the water storage box is low. At this time, the cold capacity stored in the water storage box is excessive, and the refrigeration and dehumidification effects in the box may exceed the standard, resulting in large fluctuations in temperature and humidity. Therefore, the embodiment of the present disclosure can control the compressor to temporarily stop running, thereby reducing the refrigeration efficiency of the refrigerant circulation system, so that the intermediate heat exchanger temporarily stops storing cold capacity in the water storage box, which is conducive to reducing the fluctuation of temperature and humidity in the box.

[0060] When the temperature in the water storage box is within the first temperature range, it indicates that the water temperature in the water storage box is appropriate, and the coldness stored in the water storage box can just meet the requirements of the refrigeration and dehumidification effect in the box. Therefore, the disclosed embodiment can further detect the ambient temperature outside the refrigerated box, and control the fine operation of the compressor accordingly, so as to fully consider the impact of the external environmental conditions, so as to avoid the refrigeration overload of the refrigerant circulation system, which will lead to the excessive coldness stored in the water storage box, which is conducive to better guaranteeing the refrigeration and dehumidification effect in the box.

[0061] Optionally, the control device controls the operation of the compressor according to the temperature outside the refrigerator, including: the control device determines the target speed corresponding to the compressor from a preset association relationship according to the temperature outside the refrigerator; the control device controls the compressor to operate at the target speed.

[0062] In this way, when the water temperature in the water storage box is appropriate, the disclosed embodiment can fully consider the impact of the external environmental conditions. By establishing a correlation between the temperature outside the refrigerated box and the target speed of the compressor, the disclosed embodiment can make the compressor match the external environmental conditions and operate reasonably, thereby accurately controlling the refrigeration efficiency of the refrigerant circulation system to avoid the refrigeration overload of the refrigerant circulation system resulting in an excessive amount of cold stored in the water storage box, which is conducive to better ensuring the refrigeration and dehumidification effects in the box.

[0063] Specifically, in the preset association relationship, the target speed of the compressor is positively correlated with the temperature outside the refrigerator. Optionally, the preset association relationship includes one or more corresponding relationships between the temperature outside the refrigerator and the target speed of the compressor. For example, Table 1 shows a corresponding relationship between the temperature outside the refrigerator and the target speed of the compressor, as shown in the following table:

[0064] Table 1

[0065] Temperature outside refrigerator (℃) Target speed of compressor (rpm) (-∞,Ta1] Br1 (Ta1,Ta2] Br2 (Ta2,Ta3] Br3 (Ta3,Ta4] Br4 (Ta4,Ta5] Br5 (Ta5, +∞) Br6

[0066] Among them, Ta1<Ta2<Ta3<Ta4<Ta5, Br1<Br2<Br3<Br4<Br5<Br6. For example, Ta1 is 35℃, Ta2 is 30℃, Ta3 is 25℃, Ta4 is 20℃, and Ta5 is 16℃. Br1 is the minimum speed gear, Br6 is the maximum speed gear, and Br2, Br3, Br4, and Br5 are different speed gears between the minimum speed gear and the maximum speed gear.

[0067] In this way, when the temperature outside the refrigerator is lower, the temperature difference between the condenser and the environment outside the refrigerator is greater. At this time, the heat dissipation effect of the condenser is better, corresponding to a higher refrigeration efficiency of the refrigerant circulation system. In order to avoid the refrigeration overload of the refrigerant circulation system and thus cause the water temperature in the water storage box to be low, the embodiment of the present disclosure can control the compressor to operate at a relatively small target speed to appropriately reduce the refrigeration efficiency of the refrigerant circulation system, thereby being able to control the storage of appropriate cold in the water storage box to reduce the fluctuation of the temperature and humidity in the box, which is conducive to better ensuring the refrigeration and dehumidification effect in the box.

[0068] Optionally, after the control device controls the compressor to operate, the control device further controls the condensing fan to start operating. In this way, the heat exchange efficiency of the condenser can be enhanced by starting the condensing fan, thereby improving the refrigeration efficiency of the refrigerant circulation system and facilitating rapid storage of appropriate cold capacity in the water storage box.

[0069] Optionally, the control device controls the operation of the water pump so that the temperature in the refrigerated space is within a second temperature range, including: when the temperature in the refrigerated space is greater than the upper limit value of the second temperature range, the control device controls the water pump to operate at the maximum speed; or, when the temperature in the refrigerated space is within the second temperature range, the control device controls the operation of the water pump according to the change of the temperature in the refrigerated space; or, when the temperature in the refrigerated space is less than the lower limit value of the second temperature range, the control device controls the water pump to stop running.

[0070] Thus, when the temperature in the refrigerated space is greater than the upper limit of the second temperature range, it indicates that the temperature in the refrigerated space has not yet dropped to the vicinity of the set refrigeration temperature, and the actual refrigeration effect of the items in the box is poor. Therefore, the embodiment of the present disclosure can control the water pump to run at the maximum speed, thereby increasing the water flow rate to speed up the refrigeration efficiency of the water circulation system, which is conducive to quickly reducing the temperature in the refrigerated space to meet the refrigeration requirements of the items in the box.

[0071] When the temperature in the refrigerated space is lower than the lower limit of the second temperature range, it indicates that the temperature in the refrigerated space is far lower than the set refrigeration temperature. At this time, the actual refrigeration effect in the box exceeds the standard, which easily leads to large fluctuations in temperature and humidity in the box. Therefore, the embodiment of the present disclosure can control the water pump to temporarily stop running, thereby reducing the amount of cold released by the evaporator to the refrigerated space, so that the temperature in the refrigerated space gradually rises to meet the refrigeration requirements of the items in the box.

[0072] When the temperature in the refrigerated space is within the second temperature range, it indicates that the ambient temperature in the refrigerated space is appropriate, and the cold released by the evaporator can just meet the requirements of the refrigeration and dehumidification effect in the box. Therefore, the embodiment of the present disclosure can further detect the temperature change in the refrigerated space, and reasonably optimize the operation of the water pump accordingly, so as to avoid the temperature in the refrigerated space from fluctuating outside the second temperature range, which is conducive to realizing accurate control of the temperature in the box, so as to better meet the refrigeration requirements of the items in the box.

[0073] Optionally, the control device controls the operation of the water pump according to the change of temperature in the refrigerated space, including: when the temperature in the refrigerated space decreases within a preset time period, the control device reduces the water pump speed; when the temperature in the refrigerated space increases within a preset time period, the control device increases the water pump speed.

[0074] In this way, when the temperature in the box shows a downward trend within the preset time, it indicates that the actual refrigeration effect in the box is slightly overflowed, and there is a possibility that the temperature in the box fluctuates to below the second temperature range. At this time, the water pump speed can be slightly reduced, and the refrigeration efficiency of the water circulation system can be slowed down by reducing the water flow, so that the temperature in the refrigerated space can be slightly recovered, which is conducive to better maintaining it near the set refrigerated temperature. When the temperature in the box shows an upward trend within the preset time, it indicates that the actual refrigeration effect in the box is slightly lacking, and there is a possibility that the temperature in the box rises above the second temperature range. At this time, the water pump speed can be slightly increased, and the refrigeration efficiency of the water circulation system can be accelerated by increasing the water flow, so that the temperature in the refrigerated space is slightly reduced, which is conducive to better maintaining it near the set refrigerated temperature. Therefore, the disclosed embodiment can optimize the fine operation of the water pump in combination with the change of the temperature in the box within the preset time, so as to avoid the temperature in the refrigerated space from fluctuating to outside the second temperature range, which is conducive to achieving accurate control of the temperature in the box.

[0075] Optionally, after the control device controls the water pump to operate, the control device further controls the evaporation fan to start operating. In this way, the heat exchange efficiency of the evaporator can be enhanced by starting the evaporation fan, so as to quickly reduce the temperature and humidity in the box.

[0076] Based on the above refrigerator, combined with Figure 5 As shown, the embodiment of the present disclosure provides another control method for a refrigerator, comprising:

[0077] S201, the control device sets the second temperature range according to the set refrigeration temperature, and sets the first temperature range according to the target dew point temperature corresponding to the set refrigeration temperature and the set refrigeration humidity.

[0078] S202, the control device controls the compressor to operate so that the temperature in the water storage box is within a first temperature range.

[0079] S203: The control device controls the water pump to operate so that the temperature in the refrigerated space is within a second temperature range.

[0080] S204, when the humidity in the refrigerated space is outside the preset humidity range, the control device adjusts the operation of the compressor to adjust the temperature in the water storage box.

[0081] By adopting the control method for a refrigerated box provided by the embodiment of the present disclosure, after maintaining the temperature in the refrigerated space within the second temperature range, the embodiment of the present disclosure further determines whether the humidity in the refrigerated space is within the preset humidity range. If not, it indicates that the environment in the box is difficult to meet the humidity requirements for refrigerating items at this time, so the embodiment of the present disclosure further adjusts the operation of the compressor to optimize the cold amount stored in the water storage box by the refrigerant circulation system, and reasonably corrects the subsequent dehumidification effect by adjusting the temperature in the water storage box, so that the humidity in the box enters the preset humidity range as soon as possible, so as to better ensure the actual refrigeration effect of the items in the box.

[0082] Optionally, when the humidity in the refrigerated space is outside a preset humidity range, the control device adjusts the operation of the compressor to regulate the temperature in the water storage box, including: when the humidity in the refrigerated space is greater than an upper limit value of the preset humidity range, the control device increases the speed of the compressor to lower the temperature in the water storage box; or, when the humidity in the refrigerated space is less than a lower limit value of the preset humidity range, the control device reduces the speed of the compressor to increase the temperature in the water storage box.

[0083] In this way, when the humidity in the refrigerated space is greater than the upper limit of the preset humidity range, it indicates that the humidity in the refrigerated space has not yet dropped to the vicinity of the set refrigerated humidity, and the actual refrigeration effect of the items in the box is poor. Therefore, the disclosed embodiment can control the compressor to increase the current speed, thereby improving the refrigeration efficiency of the refrigerant circulation system, so that the intermediate heat exchanger can produce more cold capacity to reduce the water temperature in the water storage box, which is conducive to further improving the dehumidification effect in the box, and facilitating the humidity in the refrigerated space to drop to the preset humidity range as soon as possible, so as to better ensure the actual refrigeration effect of the items in the box.

[0084] When the humidity in the refrigerated space is less than the lower limit of the preset humidity range, it indicates that the humidity in the refrigerated space is lower than the set refrigerated humidity. At this time, the actual dehumidification effect in the box exceeds the standard, and the humidity fluctuation in the box is large. Therefore, the disclosed embodiment can control the compressor to reduce the current speed, thereby reducing the refrigeration efficiency of the refrigerant circulation system, so that the intermediate heat exchanger reduces the amount of cold produced, thereby increasing the water temperature in the water storage box, which is conducive to further weakening the dehumidification effect in the box, and facilitating the humidity in the refrigerated space to return to the preset humidity range, so as to better ensure the actual refrigeration effect of the items in the box.

[0085] Optionally, when the humidity in the refrigerated space is greater than the upper limit of the preset humidity range, after the control device increases the compressor speed, it also includes: the control device reduces the evaporative fan speed. In this way, after increasing the compressor speed to reduce the temperature in the water storage box, the amount of cold stored in the water storage box increases, and at this time the refrigeration effect in the box will also increase along with the improvement of the dehumidification effect. In order to prevent the temperature in the box from fluctuating below the second temperature range, the embodiment of the present disclosure can appropriately reduce the evaporative fan speed to reduce the amount of cold released by the evaporator into the refrigerated space, thereby accurately matching the cold demand in the box, which is conducive to maintaining the temperature in the box within the second temperature range, so as to achieve precise control of the temperature in the box.

[0086] Optionally, when the humidity in the refrigerated space is less than the lower limit of the preset humidity range, after the control device reduces the compressor speed, it also includes: the control device increases the evaporation fan speed. In this way, after reducing the compressor speed to increase the temperature in the water storage box, the amount of cold stored in the water storage box is reduced, and the refrigeration effect in the box will also be weakened along with the decrease in the dehumidification effect. In order to prevent the temperature in the box from fluctuating above the second temperature range, the embodiment of the present disclosure can appropriately increase the evaporation fan speed to increase the amount of cold released by the evaporator into the refrigerated space, thereby accurately matching the cold demand in the box, which is conducive to maintaining the temperature in the box within the second temperature range, so as to achieve precise control of the temperature in the box.

[0087] Optionally, the control method for a refrigerator further includes: when the humidity in the refrigerated space is less than a preset humidity threshold, the control device controls the humidifying device and / or the heating device to start running to increase the humidity in the refrigerated space. The preset humidity threshold is less than the lower limit of the preset humidity range.

[0088] In this way, when the humidity in the refrigerated space is less than the preset humidity threshold, it indicates that the humidity in the refrigerated space is far lower than the set refrigerated humidity. At this time, the actual dehumidification effect in the box seriously exceeds the standard, and the humidity fluctuation in the box is large. At this time, it takes a long time to adjust the operation of the compressor to recover the humidity in the box, which may cause the refrigerated items to fail due to excessive dryness in the box. Therefore, the embodiment of the present disclosure can timely control the humidification device and / or heating device to start running, so as to quickly compensate for the lower air humidity in the refrigerated space, which is conducive to the rapid recovery of the humidity in the refrigerated space to within the preset humidity range, so as to better ensure the actual refrigeration effect of the items in the box.

[0089] Based on the above refrigerator, combined with Figure 6 As shown, the embodiment of the present disclosure provides another control method for a refrigerator, comprising:

[0090] S301, the control device sets the second temperature range according to the set refrigeration temperature, and sets the first temperature range according to the target dew point temperature corresponding to the set refrigeration temperature and the set refrigeration humidity.

[0091] S302, the control device controls the compressor to operate so that the temperature in the water storage box is within a first temperature range.

[0092] S303: The control device controls the water pump to operate so that the temperature in the refrigerated space is within a second temperature range.

[0093] S304, when the preset defrosting conditions are met, the control device controls the refrigerant circulation system to open the bypass pipeline to defrost the evaporator.

[0094] By adopting the control method for a refrigerator provided by the embodiment of the present disclosure, when the refrigerator meets the preset defrosting conditions, the bypass line can be opened in time, so that the heat of the high-temperature refrigerant discharged by the compressor can be used to assist the evaporator in defrosting. Therefore, the embodiment of the present disclosure can avoid the evaporator from freezing due to the water temperature being too low, which is conducive to ensuring the reliable operation of the water circulation system and reducing the impact on the temperature and humidity in the refrigerator.

[0095] Optionally, the preset defrosting condition includes: the temperature of the evaporator is less than or equal to the first coil temperature. In this way, when the temperature of the evaporator is less than or equal to the first coil temperature, it is determined that the preset defrosting condition is met. At this time, the corresponding defrosting operation needs to be performed in time to avoid ice formation on the evaporator, which is conducive to ensuring the reliable operation of the water circulation system and reducing the impact on the temperature and humidity in the box.

[0096] Optionally, the first coil temperature can be set in combination with the set refrigeration temperature corresponding to the items in the refrigerated space. Preferably, the first coil temperature can be set to 0°C to melt the water when it is about to freeze. The first coil temperature can also be adjusted according to the actual cooling medium stored in the water storage box, or can be set to any other reasonable value.

[0097] Optionally, the preset defrost condition includes: the running time of the water pump is greater than or equal to the first running time. In this way, when the running time of the water pump is greater than or equal to the first running time, it is judged that the preset defrost condition is met. At this time, the corresponding defrost operation needs to be performed in time to avoid ice formation on the evaporator, which is conducive to ensuring the reliable operation of the water circulation system and reducing the impact on the temperature and humidity in the box.

[0098] Optionally, the first operation duration can be set in combination with the set refrigeration temperature corresponding to the items in the refrigerated space. Preferably, the first operation duration can be set to 6 hours to periodically run the defrosting mode. The first operation duration can also be adjusted according to the actual cooling medium stored in the water storage box, or can be set to any other reasonable value.

[0099] Optionally, when the preset defrosting conditions are met, after the control device controls the refrigerant circulation system to conduct the bypass pipeline, the control device further includes: the control device controls the water pump to stop running, and controls the evaporation fan to stop running. In this way, when the defrosting mode is turned on, the embodiment of the present disclosure promptly controls the water pump and the evaporation fan to stop running, so that the heat of the high-temperature refrigerant discharged by the compressor is only used for defrosting the evaporator, avoiding its adverse effect on the temperature inside the box, which is conducive to ensuring the actual refrigeration effect of the items in the box.

[0100] Optionally, when the preset defrost conditions are met, the control device controls the refrigerant circulation system to connect the bypass pipeline to defrost the evaporator, and also includes: when the preset exit conditions are met, the control device controls the refrigerant circulation system to disconnect the bypass pipeline to stop defrosting the evaporator.

[0101] In this way, when the cold storage box meets the preset exit conditions, indicating that the frost layer on the evaporator has completely melted, the bypass line can be disconnected in time to restore the control of the temperature and humidity in the box, which is beneficial to ensure the actual refrigeration effect of the items in the box.

[0102] Optionally, the preset exit condition includes: the temperature of the evaporator is greater than or equal to the second coil temperature. Thus, when the temperature of the evaporator is greater than or equal to the second coil temperature, it indicates that the frost layer on the evaporator is completely melted, and it can be determined that the preset exit condition is met at this time. By stopping the current defrosting operation, the control of the temperature and humidity in the box can be restored in time, which is conducive to ensuring the actual refrigeration effect of the items in the box.

[0103] Optionally, the preset exit condition includes: the defrost operation duration is greater than or equal to the second operation duration. Thus, when the defrost operation duration is greater than or equal to the second operation duration, it indicates that the frost layer on the evaporator is basically melted, and it can be determined that the preset exit condition is met at this time. By stopping the current defrost operation, the control of the temperature and humidity in the box can be restored in time, which is conducive to ensuring the actual refrigeration effect of the items in the box.

[0104] Optionally, when the preset exit condition is met, after the control device controls the refrigerant circulation system to disconnect the bypass line, the control device also controls the evaporation fan to start running after a preset delay time. In this way, when the refrigerant circulation system disconnects the bypass line, the embodiment of the present disclosure delays for a certain period of time before starting the evaporation fan, thereby avoiding excessive humidity at the end of defrosting and thus adversely affecting the humidity inside the box, which is beneficial to ensuring the actual refrigeration effect of the items in the box.

[0105] Combination Figure 7As shown, the embodiment of the present disclosure provides a control device 40 for a refrigerator, including a processor 41 and a memory 42. Optionally, the control device 40 may also include a communication interface 43 and a bus 44. The processor 41, the communication interface 43, and the memory 42 may communicate with each other through the bus 44. The communication interface 43 may be used for information transmission. The processor 41 may call the logic instructions in the memory 42 to execute the control method for the refrigerator of the above embodiment.

[0106] In addition, the logic instructions in the memory 42 can be implemented in the form of software functional units and can be stored in a computer-readable storage medium when sold or used as an independent product.

[0107] The memory 42 is a computer-readable storage medium that can be used to store software programs and computer-executable programs, such as program instructions / modules corresponding to the method in the embodiment of the present disclosure. The processor 41 executes the function application and data processing by running the program instructions / modules stored in the memory 42, that is, the control method for the refrigerator in the above embodiment is implemented.

[0108] The memory 42 may include a program storage area and a data storage area, wherein the program storage area may store an operating system and an application required for at least one function; the data storage area may store data created according to the use of the terminal device, etc. In addition, the memory 42 may include a high-speed random access memory and may also include a non-volatile memory.

[0109] An embodiment of the present disclosure provides a computer-readable storage medium storing computer-executable instructions, wherein the computer-executable instructions are configured to execute the above-mentioned control method for a refrigerator.

[0110] The technical solution of the embodiment of the present disclosure can be embodied in the form of a software product, which is stored in a storage medium and includes one or more instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in the embodiment of the present disclosure. The aforementioned storage medium may be a non-transient storage medium, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a disk or an optical disk, and other media that can store program codes.

[0111] The above description and the accompanying drawings fully illustrate the embodiments of the present disclosure so that those skilled in the art can practice them. Other embodiments may include structural, logical, electrical, process and other changes. The embodiments represent only possible changes. Unless explicitly required, separate components and functions are optional, and the order of operation may vary. The parts and features of some embodiments may be included in or replace the parts and features of other embodiments. Moreover, the words used in this application are only used to describe the embodiments and are not used to limit the claims. As used in the description of the embodiments and the claims, unless the context clearly indicates, the singular forms of "a", "an" and "the" are intended to include plural forms as well. Similarly, the term "and / or" as used in this application refers to any and all possible combinations of listings containing one or more associated ones. In addition, when used in the present application, the term "comprise" and its variants "comprises" and / or comprising refer to the presence of stated features, wholes, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or groups thereof. In the absence of further restrictions, the elements defined by the sentence "comprising a ..." do not exclude the presence of other identical elements in the process, method or device comprising the elements. In this article, each embodiment may focus on the differences from other embodiments, and the same and similar parts between the various embodiments may refer to each other. For the methods, products, etc. disclosed in the embodiments, if they correspond to the method part disclosed in the embodiments, then the relevant parts can refer to the description of the method part.

[0112] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software may depend on the specific application and design constraints of the technical solution. The technicians may use different methods for each specific application to implement the described functions, but such implementations should not be considered to exceed the scope of the embodiments of the present disclosure. The technicians may clearly understand that, for the convenience and simplicity of description, the specific working processes of the systems, devices and units described above may refer to the corresponding processes in the aforementioned method embodiments, and will not be repeated here.

[0113] In the embodiments disclosed herein, the disclosed methods and products (including but not limited to devices, equipment, etc.) can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units can be only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between each other shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms. The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to implement this embodiment. In addition, each functional unit in the embodiment of the present disclosure may be integrated in a processing unit, or each unit may exist physically alone, or two or more units may be integrated in one unit.

[0114] The flowchart and block diagram in the accompanying drawings show the possible architecture, function and operation of the system, method and computer program product according to the embodiment of the present disclosure. In this regard, each box in the flowchart or block diagram can represent a module, a program segment or a part of the code, and the module, the program segment or a part of the code contains one or more executable instructions for realizing the specified logical function. In some alternative implementations, the functions marked in the box can also occur in a different order from the order marked in the accompanying drawings. For example, two consecutive boxes can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, which can depend on the functions involved. In the description corresponding to the flowchart and the block diagram in the accompanying drawings, the operations or steps corresponding to different boxes can also occur in a different order from the order disclosed in the description, and sometimes there is no specific order between different operations or steps. For example, two consecutive operations or steps can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, which can depend on the functions involved. Each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, may be implemented by a dedicated hardware-based system that performs the specified functions or actions, or may be implemented by a combination of dedicated hardware and computer instructions.

Claims

1. A control method for a refrigerator, characterized in that: The refrigerator comprises a box body, and a refrigerated space is configured inside the box; a refrigerant circulation system comprises a compressor, a condenser, a throttling device and an intermediate heat exchanger connected in sequence; a water circulation system comprises a water storage box, a water pump and an evaporator connected in sequence; wherein the intermediate heat exchanger is arranged in the water storage box; the control method comprises: The second temperature range is set according to the set refrigeration temperature, and the first temperature range is set according to the target dew point temperature corresponding to the set refrigeration temperature and the set refrigeration humidity; Controlling the operation of the compressor so that the temperature in the water storage box is within a first temperature range; The water pump is controlled to operate so that the temperature in the refrigerated space is within a second temperature range.

2. The control method according to claim 1, characterized in that: Controlling the compressor to operate so that the temperature in the water storage box is within a first temperature range includes: When the temperature in the water storage box is greater than the upper limit of the first temperature range, the compressor is controlled to operate at the maximum speed; or, When the temperature in the water storage box is within the first temperature range, the compressor is controlled to operate according to the temperature outside the refrigerator; or When the temperature in the water storage box is lower than the lower limit value of the first temperature range, the compressor is controlled to stop running.

3. The control method according to claim 2, characterized in that: Control the operation of the compressor according to the temperature outside the refrigerator, including: According to the temperature outside the refrigerator, a target speed corresponding to the compressor is determined from a preset correlation relationship; Control the compressor to run at the target speed; Among them, the target speed of the compressor is positively correlated with the temperature outside the refrigerator.

4. The control method according to claim 1, characterized in that: Controlling the operation of the water pump so that the temperature in the refrigerated space is within a second temperature range includes: When the temperature in the refrigerated space is greater than the upper limit of the second temperature range, the water pump is controlled to operate at the maximum speed; or, When the temperature in the refrigerated space is within the second temperature range, controlling the water pump to operate according to the change in the temperature in the refrigerated space; or When the temperature in the refrigerated space is lower than the lower limit value of the second temperature range, the water pump is controlled to stop operating.

5. The control method according to claim 4, characterized in that: According to the temperature changes in the refrigerated space, control the operation of the water pump, including: When the temperature in the refrigerated space decreases within a preset time, the water pump speed is reduced; When the temperature in the refrigerated space increases within a preset time period, the water pump speed is increased.

6. The control method according to any one of claims 1 to 5, characterized in that: After controlling the water pump to operate so that the temperature in the refrigerated space is within the second temperature range, the method further includes: When the humidity in the refrigerated space is outside a preset humidity range, the operation of the compressor is adjusted to regulate the temperature in the water storage box.

7. The control method according to claim 6, characterized in that: When the humidity in the refrigerated space is outside the preset humidity range, the compressor operation is adjusted to regulate the temperature in the water storage box, including: When the humidity in the refrigerated space is greater than the upper limit of the preset humidity range, increasing the speed of the compressor to reduce the temperature in the water storage box; or, When the humidity in the refrigerated space is lower than the lower limit of the preset humidity range, the compressor speed is reduced to increase the temperature in the water storage box.

8. The control method according to any one of claims 1 to 5, characterized in that: The refrigerant circulation system also includes a bypass pipeline flowing through the evaporator, one end of which is connected to the exhaust port of the compressor, and the other end of which is connected to the suction port of the compressor; the control method also includes: When the preset defrosting conditions are met, the refrigerant circulation system is controlled to open the bypass pipeline to defrost the evaporator.

9. A control device for a refrigerator, comprising a processor and a memory storing program instructions, characterized in that: The processor is configured to execute the control method for a refrigerator according to any one of claims 1 to 8 when running the program instructions.

10. A refrigerator, characterized in that: include: A box body, wherein a refrigerated space is provided inside the box body; A refrigerant circulation system, including a compressor, a condenser, a throttling device and an intermediate heat exchanger connected in sequence; The water circulation system comprises a water storage box, a water pump and an evaporator connected in sequence; wherein the intermediate heat exchanger is arranged in the water storage box; The control device for a refrigerated box as claimed in claim 9 is installed in the box body.

11. A computer-readable storage medium storing program instructions, characterized in that: When the program instructions are executed, the computer is used to execute the control method for a refrigerator as claimed in any one of claims 1 to 8.

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