Refrigeration control method, device and system

Abstract

The application relates to a cold storage control method, device and system. A first evaporator for dehumidification and a second evaporator for temperature regulation are arranged in the cold storage. In actual operation, if the dehumidification opening condition is met according to the humidity parameter of the cold storage, the first evaporator is controlled to be opened to perform dehumidification. Meanwhile, the temperature parameter of the cold storage can be obtained in real time, and the second evaporator is combined to realize temperature regulation. The above scheme can realize temperature regulation and humidity regulation of the cold storage while the first evaporator performs dehumidification, so that precise temperature control and humidity control are realized, and the dehumidification and temperature regulation reliability is better.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of temperature and humidity regulation, in particular to a cold storage control method, device and system. BACKGROUND

[0002] The cold storage refers to an equipment for creating an environment different from outdoor temperature or humidity by artificial means to realize constant temperature and humidity storage of food, liquid, chemical industry, medicine, vaccine and scientific experiment. With the increasing demand for cold storage, people are more and more strict with the temperature and humidity of cold storage. The traditional cold storage generally achieves the purpose of reducing the temperature and humidity of the cold storage by refrigeration, and the dehumidification reliability is poor. SUMMARY

[0003] Therefore, it is necessary to provide a cold storage control method, device and system to solve the problem of poor dehumidification reliability of the traditional cold storage.

[0004] A cold storage control method comprises the following steps: acquiring a humidity parameter of a cold storage in real time and performing verification; if the verification meets a dehumidification start condition, controlling a first evaporator of the cold storage to start dehumidification; acquiring a temperature parameter of the cold storage; and controlling a second evaporator of the cold storage to start temperature regulation according to the temperature parameter until the verification of the humidity parameter meets a dehumidification stop condition.

[0005] The cold storage control method sets the first evaporator for dehumidification and the second evaporator for temperature regulation in the cold storage. In actual operation, if the verification of the humidity parameter of the cold storage meets the dehumidification start condition, the first evaporator is controlled to start dehumidification, and the temperature parameter of the cold storage is acquired in real time, and the second evaporator is combined to realize temperature regulation. The above scheme can realize precise temperature and humidity control, and has better dehumidification and temperature regulation reliability.

[0006] In one embodiment, if the verification meets the dehumidification start condition, the first evaporator of the cold storage is controlled to start dehumidification at a preset fan frequency.

[0007] In one embodiment, the second evaporator of the cold storage is controlled to start temperature regulation according to the temperature parameter, which comprises the following steps: acquiring the inlet and outlet relative humidity of the first evaporator; analyzing the inlet and outlet relative humidity and the humidity parameter to obtain a predicted dehumidification time; and controlling the second evaporator of the cold storage to start temperature regulation according to the predicted dehumidification time and the temperature parameter.

[0008] In one embodiment, the analysis according to the import and export relative humidity and the humidity parameter to obtain a predicted dehumidification time comprises: analysis according to the import and export relative humidity to obtain a dehumidification efficiency parameter; analysis according to the humidity parameter, the dehumidification efficiency parameter and a preset target humidity parameter to obtain a predicted dehumidification time.

[0009] In one embodiment, the control of the second evaporator of the cold storage to be opened for storage temperature adjustment according to the predicted dehumidification time and the storage temperature parameter comprises: if the predicted dehumidification time is less than or equal to a preset time threshold, detecting whether the storage temperature parameter changes; if the storage temperature parameter changes, adjusting the fan frequency of the first evaporator for dehumidification and controlling the second evaporator of the cold storage to be opened for storage temperature adjustment; if the storage temperature parameter does not change, controlling the first evaporator to maintain a preset fan frequency for dehumidification.

[0010] In one embodiment, if the storage temperature parameter changes, the adjustment of the fan frequency of the first evaporator for dehumidification and the control of the second evaporator of the cold storage to be opened for storage temperature adjustment comprises: if the storage temperature parameter rises, increasing the fan frequency of the first evaporator for dehumidification; detecting whether the storage temperature parameter is greater than a preset highest storage temperature threshold; if the storage temperature parameter is greater than the preset highest storage temperature threshold, controlling the second evaporator of the cold storage to be opened for refrigeration; if the storage temperature parameter is less than or equal to the preset highest storage temperature threshold, controlling the first evaporator to continue dehumidification at the increased fan frequency.

[0011] In one embodiment, if the storage temperature parameter changes, the adjustment of the fan frequency of the first evaporator for dehumidification and the control of the second evaporator of the cold storage to be opened for storage temperature adjustment comprises: if the storage temperature parameter falls, reducing the fan frequency of the first evaporator for dehumidification; detecting whether the storage temperature parameter is greater than a preset lowest storage temperature threshold; if the storage temperature parameter is less than or equal to the preset lowest storage temperature threshold, controlling the second evaporator of the cold storage to be opened for heating; if the storage temperature parameter is greater than the preset lowest storage temperature threshold, controlling the first evaporator to continue dehumidification at the reduced fan frequency.

[0012] In one embodiment, the control of the second evaporator of the cold storage to be opened for storage temperature adjustment according to the predicted dehumidification time and the storage temperature parameter comprises: if the predicted dehumidification time is greater than a preset time threshold, controlling the first evaporator to maintain a preset fan frequency for dehumidification and detecting whether the storage temperature parameter changes; if the storage temperature parameter changes, controlling the second evaporator of the cold storage to be opened for storage temperature adjustment; if the storage temperature parameter does not change, controlling the first evaporator to maintain a preset fan frequency for dehumidification.

[0013] In one embodiment, if the warehouse temperature parameter changes, the second evaporator of the cold storage is controlled to be turned on for warehouse temperature adjustment, including: if the warehouse temperature parameter rises, the second evaporator of the cold storage is controlled to be turned on for refrigeration; if the warehouse temperature parameter decreases, it is detected whether the warehouse temperature parameter is less than or equal to a preset minimum warehouse temperature threshold; if the warehouse temperature parameter is less than or equal to the preset minimum warehouse temperature threshold, the second evaporator is controlled to be turned on for heating.

[0014] In one embodiment, after the humidity parameter of the cold storage is obtained and verified, if the verification satisfies the humidification opening condition, the frosting state of the first evaporator and the second evaporator is detected; according to the frosting state, the first evaporator and the second evaporator are controlled to be turned on for defrosting and humidification until the humidity parameter verification satisfies the humidification cutoff condition.

[0015] In one embodiment, the frosting state of the first evaporator and the second evaporator is detected, including: detecting whether the inlet and outlet temperature difference of the first evaporator is less than or equal to a preset temperature threshold; if the inlet and outlet temperature difference of the first evaporator is less than or equal to the preset temperature threshold, the first evaporator is frosted; detecting whether the inlet and outlet temperature difference of the second evaporator is less than or equal to a preset temperature threshold; if the inlet and outlet temperature difference of the second evaporator is less than or equal to the preset temperature threshold, the second evaporator is frosted.

[0016] In one embodiment, according to the frosting state, the first evaporator and the second evaporator are controlled to be turned on for defrosting and humidification, including any one of the following:

[0017] The first item:

[0018] If the first evaporator and the second evaporator are both frosted, the second evaporator is controlled to be turned on for defrosting and humidification; if the second evaporator completes defrosting, the first evaporator is controlled to be turned on for defrosting and humidification, and the second evaporator is controlled to be turned on for warehouse temperature adjustment according to the warehouse temperature parameter;

[0019] The second item:

[0020] If any one of the first evaporator and the second evaporator is frosted, the evaporator that is frosted is controlled to be turned on for defrosting and humidification, and the evaporator that is not frosted is controlled to be turned on for warehouse temperature adjustment according to the warehouse temperature parameter;

[0021] The third item:

[0022] If the first evaporator and the second evaporator are both not frosted, the humidifier of the cold storage is controlled to be turned on for humidification according to the humidity parameter.

[0023] In one embodiment, if neither the first evaporator nor the second evaporator is frosting, the method further comprises: adjusting the temperature of the cold storage according to the humidity parameter, and outputting an alarm prompt.

[0024] In one embodiment, the adjusting the temperature of the cold storage according to the humidity parameter comprises: matching a current required temperature of the cold storage according to the humidity parameter and a preset correspondence between humidity and temperature; if the current required temperature is within a preset temperature threshold range, adjusting the temperature of the cold storage to the current required temperature; and if the current temperature is not within the preset temperature threshold range, adjusting the temperature of the cold storage to a temperature matched with a maximum value of a preset humidity range.

[0025] In one embodiment, the real-time acquisition of the humidity parameter of the cold storage and the verification thereof comprises: acquiring a moisture content of the cold storage; analyzing the moisture content to obtain a relative humidity of the cold storage; verifying whether a dehumidification start condition is met according to the relative humidity; if the relative humidity is greater than a maximum value of a preset humidity range, verifying that the dehumidification start condition is met; and if the relative humidity is less than a minimum value of the preset humidity range, verifying that a humidification start condition is met.

[0026] A cold storage control device comprises: a humidity verification module configured to acquire a humidity parameter of a cold storage in real time and verify the humidity parameter; a dehumidification module configured to control a first evaporator of the cold storage to start dehumidification if the verification satisfies a dehumidification start condition; a temperature acquisition module configured to acquire a temperature parameter of the cold storage; and a temperature adjustment module configured to control a second evaporator of the cold storage to start temperature adjustment according to the temperature parameter until the humidity parameter verification satisfies a dehumidification stop condition.

[0027] A cold storage control device comprises: a humidity verification module configured to acquire a humidity parameter of a cold storage in real time and verify the humidity parameter; a dehumidification module configured to control a first evaporator of the cold storage to start dehumidification if the verification satisfies a dehumidification start condition; a temperature acquisition module configured to acquire a temperature parameter of the cold storage; and a temperature adjustment module configured to control a second evaporator of the cold storage to start temperature adjustment according to the temperature parameter until the humidity parameter verification satisfies a dehumidification stop condition. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiments or the prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0029] Figure 1A flowchart of a cold storage control method according to an embodiment of the present application;

[0030] Figure 2 A flowchart of a cold storage control method according to another embodiment of the present application;

[0031] Figure 3 A flowchart of a cold storage temperature adjustment method according to an embodiment of the present application;

[0032] Figure 4 A flowchart of a cold storage temperature adjustment method according to another embodiment of the present application;

[0033] Figure 5 A flowchart of a cold storage temperature adjustment method according to yet another embodiment of the present application;

[0034] Figure 6 A flowchart of a second evaporator control method according to an embodiment of the present application;

[0035] Figure 7 A flowchart of a second evaporator control method according to another embodiment of the present application;

[0036] Figure 8 A flowchart of a cold storage temperature adjustment method according to yet another embodiment of the present application;

[0037] Figure 9 A flowchart of a second evaporator control method according to yet another embodiment of the present application;

[0038] Figure 10 A flowchart of a second evaporator control method according to yet another embodiment of the present application;

[0039] Figure 11 A flowchart of a cold storage control method according to yet another embodiment of the present application;

[0040] Figure 12 A flowchart of a dehumidification method according to an embodiment of the present application;

[0041] Figure 13 A flowchart of a humidification method according to an embodiment of the present application;

[0042] Figure 14 A structure diagram of a cold storage control device according to an embodiment of the present application;

[0043] Figure 15 A structure diagram of a cold storage control device according to yet another embodiment of the present application;

[0044] Figure 16 A structure diagram of a cold storage control system according to an embodiment of the present application;

[0045] Figure 17 A structure diagram of a cold storage control system according to another embodiment of the present application. DETAILED DESCRIPTION

[0046] For the purposes of this application, a more complete understanding of the application can be obtained by reference to the following description taken in connection with the accompanying drawings. The preferred embodiments of the application are illustrated in the drawings. However, the application can be implemented in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the application to those skilled in the art.

[0047] Referring to Figure 1 A cold storage control method includes steps 102, 104, 106 and 108.

[0048] Step 102, real-time acquisition of humidity parameters of the cold storage and verification.

[0049] Specifically, the humidity parameter is a parameter representing the water content in the air in the cold storage environment. It can be understood that the specific type of humidity parameter is not unique. In a more detailed embodiment, the humidity parameter includes moisture content and / or relative humidity. The moisture content refers to the mass of water vapor mixed in per kilogram of dry air, and the relative humidity refers to the ratio of the actual water vapor pressure in the air to the saturated water vapor pressure at the time, which reflects the degree of air from saturated air. In actual detection, it is not unique to use moisture content or relative humidity to control the cold storage, and the actual needs can be selected.

[0050] During the operation of the cold storage, the humidity parameter will change due to the opening of the door or the change of the stored goods. In order to maintain the constant humidity of the cold storage, the scheme of the embodiment needs to verify the humidity parameter of the cold storage in real time, so as to open the humidification and dehumidification in time, or close the humidification and dehumidification operation in time. It can be understood that the controller verifies the humidity parameter, that is, compares the humidity parameter with the preset humidity range to ensure that the humidity parameter of the cold storage is within the preset humidity range.

[0051] It should be pointed out that the way the controller acquires the humidity parameter is not unique. In an embodiment, humidity detectors can be arranged at different positions of the cold storage, and the humidity-related parameters are detected by the humidity detectors, and finally sent to the controller for further analysis and conversion to obtain the humidity parameter; or the humidity detector directly detects the humidity parameter and sends it to the controller.

[0052] The specific type of the humidity detector is not unique. In an embodiment, the humidity detector can be directly implemented by a humidity sensor. In another embodiment, the humidity detector can also be a wet bulb. In order to facilitate the understanding of the technical solutions of the present application, the humidity detector is explained as a wet bulb below. In actual operation, the controller first acquires the wet bulb temperature, and then further analyzes and calculates in combination with the internal environment temperature of the cold storage to obtain the final humidity parameter. Correspondingly, the humidity-related parameter sent by the humidity detector to the controller at this time is the wet bulb temperature.

[0053] In step 104, if the verification meets the dehumidification start condition, the first evaporator of the cold storage is controlled to start dehumidification.

[0054] Specifically, when the controller verifies in combination with the acquired humidity parameter, if the humidity of the cold storage is too high, the dehumidification start condition will be verified. At this time, the controller will issue a start instruction to the first evaporator to control the first evaporator to start, condense the water vapor in the air of the cold storage, and achieve the purpose of dehumidification.

[0055] In step 106, the temperature parameter of the cold storage is acquired.

[0056] Specifically, the temperature parameter is the internal air temperature of the cold storage. During the process of controlling the first evaporator to start dehumidification, the controller also acquires the temperature parameter in real time. A temperature detector is arranged in the cold storage, and the temperature parameter can be acquired in real time by the temperature detector and sent to the controller.

[0057] It should be pointed out that in an embodiment, the operation of the controller acquiring the temperature parameter of the cold storage can be performed in real time. In the case of starting the operation of the cold storage, the temperature detector can acquire the temperature parameter in real time and send it to the controller. In another embodiment, the operation of acquiring the temperature parameter can also be performed after the controller controls the first evaporator to start dehumidification, which is not limited in detail.

[0058] In step 107, the second evaporator of the cold storage is controlled to start temperature adjustment according to the temperature parameter until the humidity parameter verification meets the dehumidification stop condition.

[0059] Specifically, after the controller acquires the temperature parameter, the temperature parameter will be analyzed, and the second evaporator will be controlled to start temperature adjustment according to the temperature parameter. It can be controlled to start temperature rise or temperature drop, which is selected according to actual needs. During the entire operation of the cold storage, the temperature of the cold storage needs to be adjusted in combination with the real-time temperature parameter every time the first evaporator is started to dehumidify until the dehumidification of the first evaporator is completed, that is, the humidity parameter is within the preset humidity range through the dehumidification operation of the first evaporator.

[0060] It can be understood that, in an embodiment, the controller pre-stores a preset warehouse temperature threshold range, and the purpose of the temperature and humidity adjustment of the cold storage is to make the final warehouse temperature parameter of the cold storage be within the preset warehouse temperature threshold range and make the humidity parameter of the cold storage be within the preset humidity range. Therefore, the controller performs the warehouse temperature adjustment according to the warehouse temperature parameter, and the essence is to correspondingly adjust the warehouse temperature according to the relationship between the warehouse temperature parameter and the preset warehouse temperature threshold range.

[0061] The cold storage control method described above is provided with a first evaporator for dehumidification and a second evaporator for temperature regulation in the cold storage. In actual operation, if it is verified that the dehumidification opening condition is met according to the humidity parameter of the cold storage, the first evaporator is controlled to be opened to perform dehumidification, and the warehouse temperature parameter of the cold storage can be obtained in real time, and the second evaporator is combined to perform warehouse temperature regulation. The above scheme can perform dehumidification by the first evaporator and perform warehouse temperature regulation by the second evaporator at the same time, and the temperature and humidity adjustment of the cold storage is taken into account at the same time, so as to realize accurate temperature and humidity control, and has better dehumidification and temperature regulation reliability.

[0062] Please refer to Figure 2 In an embodiment, step 104 includes step 202.

[0063] In step 202, if it is verified that the dehumidification opening condition is met, the first evaporator of the cold storage is controlled to be started at a preset fan frequency to perform dehumidification.

[0064] Specifically, when it is verified that the dehumidification opening condition is met, the controller controls the evaporator to be opened to perform dehumidification operation. More specifically, the fan of the evaporator is controlled to be started to operate at a preset fan frequency to start dehumidification. According to the scheme, whenever the dehumidification opening condition is met, the evaporator is first started to operate at the preset fan frequency, and has strong starting reliability.

[0065] It should be noted that the size of the preset fan frequency is not unique. In a more detailed embodiment, the preset fan frequency can be set as the lowest fan frequency, that is, the fan of the evaporator is started to operate at the lowest fan speed. In this way, the first evaporator is controlled to be started to operate at the lowest fan frequency, which can reduce the power consumption of the first evaporator to a certain extent.

[0066] Please refer to Figure 3 In an embodiment, the second evaporator of the cold storage is controlled to be opened to perform warehouse temperature regulation according to the warehouse temperature parameter, including steps 302, 304 and 306.

[0067] In step 302, the inlet and outlet relative humidity of the first evaporator is obtained. In step 304, the inlet and outlet relative humidity and the humidity parameter are analyzed to obtain the predicted dehumidification time. In step 306, the second evaporator of the cold storage is controlled to be opened to perform warehouse temperature regulation according to the predicted dehumidification time and the warehouse temperature parameter.

[0068] Specifically, the inlet-outlet relative humidity is the difference between the inlet humidity and the outlet humidity; and the predicted dehumidification time is the time required to reduce the humidity of the current cold storage to within the preset humidity threshold range. After obtaining the storage temperature parameter, the controller needs to further analyze the inlet-outlet relative humidity of the first evaporator to obtain the predicted dehumidification time, and finally control the second evaporator to start operating according to the predicted dehumidification time, so as to realize the storage temperature regulation.

[0069] It should be pointed out that the way of obtaining the inlet-outlet relative humidity of the first evaporator is not unique. In an embodiment, the inlet and outlet of the first evaporator are respectively provided with humidity sensors, and the two humidity sensors are respectively connected to the controller. The controller calculates the inlet-outlet relative humidity according to the inlet humidity and outlet humidity collected and sent by the humidity sensors.

[0070] Please refer to Figure 4 In an embodiment, step 304 includes step 402 and step 404.

[0071] Step 402: analyzing according to the inlet-outlet relative humidity to obtain a dehumidification efficiency parameter. Step 404: analyzing according to the humidity parameter, the dehumidification efficiency parameter and the preset target humidity parameter to obtain the predicted dehumidification time.

[0072] Specifically, the dehumidification efficiency parameter is the amount of moisture content reduced per unit time (which can be one minute) or the amount of relative humidity reduced per unit time. After obtaining the inlet-outlet relative humidity, the controller analyzes and calculates according to the inlet-outlet relative humidity to obtain the dehumidification efficiency parameter. Then, according to the humidity parameter and the preset target humidity parameter, the total humidity to be reduced in the entire dehumidification process can be obtained. The ratio of the total humidity to be reduced to the dehumidification efficiency parameter is taken as the predicted dehumidification time.

[0073] It should be pointed out that the size of the preset target humidity parameter is not unique. When dehumidifying, the purpose is to reduce the humidity of the cold storage to within the preset humidity range. Therefore, in an embodiment, the preset target humidity can be set to the maximum value of the preset humidity range. In another embodiment, the preset target humidity can be set to less than the maximum value of the preset humidity range, for example, the preset target humidity is set to (1-5%) times the maximum value of the preset humidity range.

[0074] It can be understood that in an embodiment, the humidity parameter includes moisture content and relative humidity, and correspondingly, the moisture content, the dehumidification efficiency parameter and the preset target humidity parameter can be combined to analyze the predicted dehumidification time. When judging whether the dehumidification start condition is met or the dehumidification stop condition is met, it is realized by analyzing whether the relative humidity is within the preset humidity range.

[0075] The way the controller analyzes the inlet and outlet relative humidity to obtain the dehumidification efficiency parameter is not unique. In a more detailed embodiment, a time parameter can be pre-stored in the controller. After the controller obtains the inlet and outlet relative humidity, it compares the relative humidity with the time parameter to obtain the corresponding dehumidification efficiency parameter.

[0076] Referring to Figure 5 In an embodiment, step 306 includes step 502, step 504, and step 506.

[0077] In step 502, if the predicted dehumidification time is less than or equal to the preset time threshold, it is detected whether the library temperature parameter changes. In step 504, if the library temperature parameter changes, the fan frequency of the first evaporator is adjusted for dehumidification, and the second evaporator of the cold storage is controlled to be turned on for library temperature adjustment. In step 506, if the library temperature parameter does not change, the first evaporator is controlled to maintain the preset fan frequency for dehumidification.

[0078] Specifically, in the embodiment, when the library temperature is adjusted, the predicted dehumidification time and the preset time threshold are first compared and analyzed, and different actions are performed according to different comparison and analysis results, so that the second evaporator is turned on for library temperature regulation.

[0079] If the controller detects that the predicted dehumidification time is less than or equal to the preset time threshold, the library temperature parameter needs to be further detected during the dehumidification process. The specific detection method is not unique. In an embodiment, the current obtained library temperature parameter can be compared and analyzed with the library temperature parameter obtained before the preset time (which can be set differently according to actual needs, for example, 1 minute, etc.), if the two are consistent, it is considered that there is no change; if the two are inconsistent, it is considered that there is a change. In another embodiment, the current obtained library temperature parameter can be compared and analyzed with the last obtained library temperature parameter, if the two are consistent, it is considered that there is no change; if the two are inconsistent, it is considered that there is a change.

[0080] In the case where the library temperature parameter changes, the library temperature parameter needs to be further adjusted, that is, the second evaporator is controlled to be turned on for temperature adjustment. In the case where it is detected that the library temperature parameter does not change, there is no need to adjust the library temperature, and in this state, only the first evaporator needs to be controlled to maintain the preset fan frequency to continue dehumidification.

[0081] When the dehumidification causes the library temperature parameter to change, the fan frequency of the first evaporator needs to be adjusted, and the second evaporator of the cold storage is controlled to be turned on for library temperature adjustment, so as to avoid continuous change of the library temperature and maintain a relatively stable temperature environment for the cold storage.

[0082] It can be understood that, in an embodiment, in order to ensure that the dehumidification can be detected in time when the warehouse temperature changes, and the warehouse temperature is prevented from exceeding the preset warehouse temperature threshold range, when the dehumidification time is expected to be less than or equal to the preset time threshold, it is necessary to analyze whether the warehouse temperature parameter changes in real time until the dehumidification ends. That is, if the warehouse temperature parameter does not change, in addition to controlling the first evaporator to maintain the preset fan frequency for dehumidification, it is also necessary to return to the operation of detecting whether the warehouse temperature parameter changes until the final dehumidification ends.

[0083] It should be pointed out that the size of the preset time threshold is not unique, and can be set according to actual scenes. For example, in a more detailed embodiment, the preset time threshold can be set to 30 minutes.

[0084] Please refer to Figure 6 In an embodiment, step 504 includes steps 602, 604, 606 and 608.

[0085] Step 602, if the warehouse temperature parameter increases, the fan frequency of the first evaporator is increased for dehumidification. Step 604, detecting whether the warehouse temperature parameter is greater than the preset highest warehouse temperature threshold. Step 604, if the warehouse temperature parameter is greater than the preset highest warehouse temperature threshold, the second evaporator of the cold storage is controlled to be turned on for refrigeration. Step 608, if the warehouse temperature parameter is less than or equal to the preset highest warehouse temperature threshold, the first evaporator continues to dehumidify at the increased fan frequency.

[0086] Specifically, the change of the warehouse temperature parameter includes two cases of increase and decrease of the warehouse temperature parameter. The increase of the warehouse temperature parameter means that the currently acquired warehouse temperature parameter is greater than the last acquired warehouse temperature parameter, or the currently acquired warehouse temperature parameter is higher than the warehouse temperature parameter before the preset time. The scheme of the embodiment is further explained by taking the increase of the warehouse temperature parameter as an example. When the controller detects that the warehouse temperature parameter increases, the first evaporator needs to be controlled to increase the fan frequency for dehumidification to speed up the dehumidification speed. The way of controlling the first evaporator to increase the fan frequency is not unique. In an embodiment, the fan frequency can be adjusted to be higher than the preset fan frequency size. In another embodiment, the fan frequency can also be increased by a preset threshold size, which can be selected according to actual needs.

[0087] After the controller controls the first evaporator to increase the fan frequency, the acquisition of the warehouse temperature parameter needs to be performed in real time, and the acquired warehouse temperature parameter is compared and analyzed with the preset highest warehouse temperature threshold. If the warehouse temperature increases to be greater than the preset highest warehouse temperature threshold due to the operation of the first evaporator or other reasons, the second evaporator needs to be controlled to be turned on for refrigeration to ensure that the warehouse temperature parameter is within the preset warehouse temperature threshold range.

[0088] When the controller detects that the library temperature parameter is increased, but has not reached the preset maximum library temperature threshold, that is, is less than or equal to the preset maximum library temperature threshold, no library temperature adjustment is needed, and at this time, the first evaporator only needs to be maintained at the increased fan frequency for dehumidification.

[0089] It should be pointed out that in one embodiment, whether the controller controls the second evaporator to be turned on for refrigeration or the controller controls the first evaporator to be maintained at the increased fan frequency after running, the operation of detecting whether the library temperature parameter changes will be returned until the dehumidification finally reaches the dehumidification cutoff condition, so that when the library temperature parameter changes, a timely response can be made.

[0090] It can be understood that the size of the preset maximum library temperature threshold is not unique, and in one embodiment, the maximum value of the preset library temperature threshold range can be directly used as the preset maximum library temperature threshold. In another embodiment, in order to reduce measurement error and ensure that the library temperature parameter is truly within the preset library temperature threshold range, the maximum value of the preset library temperature threshold range can be subtracted by a preset value to be used as the preset maximum library temperature threshold. For example, in a more detailed embodiment, the maximum value of the preset library temperature threshold range is Tg degrees Celsius, and the preset value can be set to 1 degree Celsius, that is, Tg-1 is used as the preset maximum library temperature threshold.

[0091] Please refer to Figure 7 In one embodiment, step 504 includes steps 702, 704, 706, and 708.

[0092] Step 702, if the library temperature parameter is decreased, the fan frequency of the first evaporator is decreased for dehumidification. Step 704, detecting whether the library temperature parameter is greater than the preset minimum library temperature threshold. Step 706, if the library temperature parameter is less than or equal to the preset minimum library temperature threshold, the second evaporator of the cold storage is controlled to be turned on for heating. Step 708, if the library temperature parameter is greater than the preset minimum library temperature threshold, the first evaporator is controlled to continue dehumidification at the decreased fan frequency.

[0093] Specifically, when detecting the library temperature parameter, the library temperature parameter may also be decreased due to changes in stored goods and other reasons, in order to ensure that the cold storage maintains a constant temperature for storing goods. In contrast to the above-mentioned increase in the library temperature parameter, at this time, the controller needs to control the first evaporator to decrease the fan frequency to slow down the dehumidification speed. At the same time, the detected library temperature parameter needs to be analyzed with the preset minimum library temperature, and when the library temperature parameter is less than or equal to the preset minimum library temperature parameter, the second evaporator is controlled to be turned on for heating, and when the library temperature parameter is greater than the preset minimum library temperature, the first evaporator only needs to be maintained at the decreased fan frequency for running, until the dehumidification is finally completed.

[0094] Similarly, in one embodiment, no matter whether the controller controls the second evaporator to start heating or the controller controls the first evaporator to maintain the reduced fan frequency, the operation of detecting whether the library temperature parameter changes will be returned until the dehumidification reaches the dehumidification cutoff condition, so that when the library temperature parameter changes, a timely response can be made.

[0095] It can be understood that, similar to the above-mentioned preset maximum library temperature threshold, the size of the preset minimum library temperature threshold is not unique. In one embodiment, the minimum value of the preset library temperature threshold range can be directly used as the preset minimum library temperature threshold. In another embodiment, in order to reduce errors and ensure that the library temperature parameter is truly within the preset library temperature threshold range, the minimum value of the preset library temperature threshold range can be added to a preset value to be used as the preset minimum library temperature threshold. For example, in a more detailed embodiment, the minimum value of the preset library temperature threshold range is Td degrees Celsius, and the preset value can be set to 1 degree Celsius, that is, Td+1 is used as the preset minimum library temperature threshold.

[0096] Referring to Figure 8 In one embodiment, step 306 includes step 802, step 804, and step 806.

[0097] Step 802: If the predicted dehumidification time is greater than the preset time threshold, the first evaporator is controlled to maintain the preset fan frequency for dehumidification, and it is detected whether the library temperature parameter changes. Step 804: If the library temperature parameter changes, the second evaporator of the cold storage is controlled to start to adjust the library temperature. Step 806: If the library temperature parameter does not change, the first evaporator is controlled to maintain the preset fan frequency for dehumidification.

[0098] Specifically, when the controller compares and analyzes the predicted dehumidification time with the preset time threshold, the case that the predicted dehumidification time is greater than the preset time threshold will also occur, and at this time, the controller will use another control logic to control the cold storage.

[0099] In this state, the controller will not adjust the fan frequency of the first evaporator, but maintain the preset fan frequency when the first evaporator starts to run, and at the same time, start to detect and adjust the library temperature parameter in the preliminary process. If the library temperature parameter changes, the second evaporator will be started to adjust the temperature, and if the library temperature parameter does not change, the first evaporator only needs to continue to maintain the preset fan frequency to run.

[0100] Referring to Figure 9 In one embodiment, step 804 includes step 902, step 904, and step 906.

[0101] If the library temperature parameter increases, the second evaporator of the cold storage is controlled to be turned on for refrigeration in step 902. If the library temperature parameter decreases, it is detected whether the library temperature parameter is less than or equal to a preset minimum library temperature threshold in step 904. If the library temperature parameter is less than or equal to the preset minimum library temperature threshold, the second evaporator is controlled to be turned on for heating in step 906.

[0102] Specifically, when the controller controls the second evaporator in combination with the change of the library temperature parameter, it is also divided into two cases of the library temperature parameter increasing and the library temperature parameter decreasing. If the library temperature parameter increases, the second evaporator is directly turned on for refrigeration to alleviate the continuous increase of the library temperature parameter. If the library temperature parameter decreases, it is necessary to judge the relationship between the library temperature parameter and the preset minimum library temperature threshold in combination with the actual situation to realize corresponding regulation and control operation. If the library temperature parameter decreases to be less than or equal to the preset minimum library temperature threshold, the second evaporator is turned on for heating, and if the library temperature parameter does not decrease below the preset minimum library temperature threshold, refrigeration or heating is not needed, and the current running state of the first evaporator can be maintained.

[0103] Please refer to Figure 10 In one embodiment, after step 102, the method further includes steps 112 and 114.

[0104] If the verification satisfies the humidification opening condition, the frosting state of the first evaporator and the second evaporator is detected in step 112. According to the frosting state, the first evaporator and the second evaporator are controlled to be turned on for defrosting and humidification until the humidity parameter verification satisfies the humidification cutoff condition in step 114.

[0105] Specifically, when the controller acquires the humidity parameter of the cold storage for real-time verification, the humidity parameter may also be too low, that is, the humidification opening condition is satisfied. In this state, the controller will preferentially consider using the evaporator for humidification. In the running process of the evaporator, water vapor is prone to condense frost. Therefore, in the case of satisfying the humidification opening condition, the first evaporator and the second evaporator are turned on for defrosting and humidification in combination with the frosting state. This kind of way can realize humidification and defrosting of the evaporator, and improve the running reliability of the evaporator.

[0106] It should be noted that the setting of the humidification stop condition is not unique. In one embodiment, the humidification stop condition can be satisfied when the humidity parameter is greater than or equal to the minimum value of the preset humidity range. The controller needs to control the humidifier to operate until the humidity parameter of the cold storage is within the preset humidity range, i.e., the humidity parameter needs to be greater than or equal to the minimum value of the preset humidity range. In another embodiment, to eliminate measurement errors and ensure that the humidity of the cold storage is within the preset humidity range after humidification, a threshold value can be set based on the minimum value of the preset humidity range, and the humidification stop condition is considered to be satisfied when the humidity parameter is greater than or equal to the threshold value. For example, in a more detailed embodiment, (1+5%) As1 can be used as the threshold value, where As1 is the minimum value of the preset humidity range, i.e., the humidification stop condition is considered to be satisfied when the humidity parameter is greater than or equal to (1+5%) As1.

[0107] In one embodiment, detecting the frosting state of the first evaporator and the second evaporator includes: detecting whether the temperature difference between the inlet and outlet of the first evaporator is less than or equal to a preset temperature threshold; if the temperature difference between the inlet and outlet of the first evaporator is less than or equal to the preset temperature threshold, the first evaporator is frosting; detecting whether the temperature difference between the inlet and outlet of the second evaporator is less than or equal to the preset temperature threshold; if the temperature difference between the inlet and outlet of the second evaporator is less than or equal to the preset temperature threshold, the second evaporator is frosting.

[0108] Specifically, in the scheme of this embodiment, temperature detection devices (which can be temperature sensors or temperature sensing bags) are arranged at the inlet and outlet of the evaporators. When there is a humidification demand, the first evaporator and the second evaporator are respectively turned on for a period of time (which can be 1 minute, without limitation). During the on period, the inlet and outlet temperatures of the first evaporator and the inlet and outlet temperatures of the second evaporator are respectively sent to the controller by the temperature detection devices, and the controller analyzes to obtain the temperature difference between the inlet and outlet of the first evaporator and the temperature difference between the inlet and outlet of the second evaporator. If the temperature difference between the inlet and outlet of the first evaporator is less than or equal to the preset temperature threshold, the first evaporator is frosting. If the temperature difference between the inlet and outlet of the second evaporator is less than or equal to the preset temperature threshold, the second evaporator is frosting. Finally, the humidification control is realized by combining the detection results of whether the two evaporators are frosting.

[0109] Further, in one embodiment, according to the frosting state, the first evaporator and the second evaporator are controlled to be turned on for defrosting and humidification, including any one of the following:

[0110] The first item: if both the first evaporator and the second evaporator are frosting, the second evaporator is controlled to be turned on for defrosting and humidification; if the defrosting of the second evaporator is completed, the first evaporator is controlled to be turned on for defrosting and humidification, and the second evaporator is controlled to be turned on for temperature adjustment of the cold storage according to the temperature parameter of the cold storage;

[0111] The second item: if any one of the first evaporator and the second evaporator is frosted, the evaporator for defrosting is started to defrost and humidify, and the other evaporator is started to adjust the temperature of the cold storage according to the library temperature parameter;

[0112] The third item: if neither of the first evaporator and the second evaporator is frosted, the humidifier of the cold storage is started to humidify according to the humidity parameter.

[0113] Specifically, in the scheme of the embodiment, the cold storage is also provided with a humidifier. When the first evaporator is started to defrost and humidify, the defrosting water flows into the humidifier, is atomized by the humidifier, and is spread into the cold storage to realize the humidifying operation. Correspondingly, the second evaporator is started to defrost and humidify, that is, the second evaporator is controlled to defrost, the defrosting water flows into the humidifier, is atomized by the humidifier, and is spread into the cold storage to realize the humidifying operation.

[0114] When humidifying, the defrosting modes are different according to the frosting states of the first evaporator and the second evaporator. If both of the evaporators are frosted, the second evaporator and the first evaporator are started to defrost in turn. When the first evaporator is started to defrost, the second evaporator is controlled to adjust the temperature of the cold storage according to the library temperature parameter. For example, when the library temperature parameter is higher than the preset highest library temperature threshold, the second evaporator is started to cool; when the library temperature parameter is lower than the preset lowest library temperature threshold, the second evaporator is started to heat; and when the library temperature parameter is within the preset library temperature threshold range, the second evaporator does not need to be started.

[0115] If only one of the two evaporators is frosted, only the evaporator for defrosting needs to be started to defrost, and the other evaporator is controlled to adjust the temperature of the cold storage according to the library temperature parameter in the process. For example, when the library temperature parameter is higher than the preset highest library temperature threshold, the other evaporator is started to cool; when the library temperature parameter is lower than the preset lowest library temperature threshold, the other evaporator is started to heat; and when the library temperature parameter is within the preset library temperature threshold range, the other evaporator does not need to be started.

[0116] If neither of the two evaporators is frosted, it is not necessary to start the first evaporator and the second evaporator to defrost. Correspondingly, at this time, only the humidifier needs to be directly started to humidify according to the pre-stored water.

[0117] It should be pointed out that, whether the humidifier is started to humidify after the evaporator is defrosted or the humidifier is directly started to humidify, the controller needs to calculate the required water supplement amount according to the corresponding humidity of the humidification cutoff condition and the current moisture content, so that the water amount added by the humidifier is greater than the required water supplement amount, so that the final humidity parameter meets the humidification cutoff condition.

[0118] In one embodiment, if neither the first evaporator nor the second evaporator is frosted, the method further comprises: adjusting the warehouse temperature according to the humidity parameter, and outputting an alarm prompt information.

[0119] Specifically, in the case that neither the first evaporator nor the second evaporator is frosted, while the humidifier is turned on to humidify, the warehouse temperature is monitored in combination with the actual warehouse temperature parameter, the warehouse temperature parameter is adjusted when the warehouse temperature parameter changes, and an alarm prompt information is outputted to inform the user of the current state of the cold storage. The output mode of the specific alarm prompt information can be implemented through an alarm or a remote device, which is not limited herein.

[0120] Further, in one embodiment, the adjusting the warehouse temperature according to the humidity parameter comprises: matching a current required warehouse temperature according to the humidity parameter and a preset correspondence between humidity and warehouse temperature; if the current required warehouse temperature is within a preset warehouse temperature threshold range, adjusting the warehouse temperature of the cold storage to the current required warehouse temperature; and if the current required warehouse temperature is not within the preset warehouse temperature threshold range, adjusting the warehouse temperature to a warehouse temperature matched by a maximum value of a preset humidity range.

[0121] Specifically, the controller pre-stores the correspondence between humidity and warehouse temperature, that is, stores the corresponding optimal storage temperature of the goods under different storage humidity environments. When neither of the two evaporators is frosted, the controller matches in the preset storage relationship in combination with the current warehouse temperature parameter to find the optimal temperature of the goods storage under the current humidity parameter, that is, the current required warehouse temperature. Then, the current required warehouse temperature is compared and analyzed with the preset warehouse temperature threshold range. If the current required warehouse temperature is within the preset warehouse temperature threshold range, it means that the cold storage has a warehouse temperature suitable for the current humidity parameter, and at this time, the warehouse temperature parameter only needs to be adjusted to the current required warehouse temperature.

[0122] If the current required warehouse temperature is not within the preset warehouse temperature threshold range, it means that the cold storage does not have a warehouse temperature suitable for the current humidity parameter, and at this time, in order to avoid that the humidification makes the warehouse temperature too low, the warehouse temperature parameter needs to be adjusted to a warehouse temperature matched by a maximum value of a preset humidity range. That is, the maximum value of the preset humidity range pre-stored by the controller is brought into the preset correspondence between humidity and warehouse temperature for matching to obtain a warehouse temperature, and finally the cold storage is adjusted to the warehouse temperature for humidification.

[0123] It can be understood that in the scheme of the embodiment, when the warehouse temperature is adjusted, any one of the first evaporator or the second evaporator can be turned on to realize the adjustment, or the first evaporator and the second evaporator can be turned on at the same time to adjust the warehouse temperature, which is not limited in detail.

[0124] Please refer to Figure 11 In one embodiment, the step 102 comprises steps 111, 113 and 115.

[0125] Step 111, obtain the humidity content of the cold storage. Step 113, analyze according to the humidity content to obtain the relative humidity of the cold storage. Step 115, check whether the dehumidification opening condition is met according to the relative humidity.

[0126] Specifically, if the relative humidity is greater than the maximum value of the preset humidity range, it is checked that the dehumidification opening condition is met, and if the relative humidity is less than the minimum value of the preset humidity range, it is checked that the humidification opening condition is met. In the scheme of the embodiment, the humidity parameters of the cold storage include the humidity content and the relative humidity, and in the actual checking process, the relative humidity needs to be combined to be realized. When the relative humidity is greater than the maximum value of the preset humidity range, it is considered that the humidity is too high, and at this time, dehumidification is started. When the relative humidity is less than the minimum value of the preset humidity range, humidification is started.

[0127] It should be pointed out that the obtaining method of the humidity content is not unique. In an embodiment, a wet bulb and a temperature detector are arranged in the cold storage, the controller obtains the environment temperature detected by the temperature detector and the wet bulb temperature, and then combines the environment temperature and the wet bulb temperature to calculate the humidity content. Then the controller further calculates the corresponding relative humidity according to the preset storage temperature threshold range and the humidity content.

[0128] It can be understood that different relative humidities can be calculated according to different temperature values in the selected preset storage temperature threshold range in combination with the humidity content. Therefore, when the relative humidity is combined for checking, different relative humidities can be compared and analyzed with the preset humidity range respectively. If each relative humidity is less than the minimum value of the preset humidity range, it is considered that the humidification condition is met. If each relative humidity is greater than the maximum value of the preset humidity range, it is checked that the dehumidification opening condition is met. Otherwise, neither humidification nor dehumidification is started, and only temperature adjustment combined with the storage temperature parameter is needed. In another embodiment, the average value of the relative humidity can also be obtained by solving each relative humidity. If the average value is greater than the maximum value of the preset humidity range, it is checked that the dehumidification opening condition is met. If the average value is less than the minimum value of the preset humidity range, it is considered that the humidification condition is met. Otherwise, neither humidification nor dehumidification is started, and only temperature adjustment combined with the storage temperature parameter is needed.

[0129] For the convenience of understanding the technical solutions of the present application, the present application will be explained and described in detail below in combination with more detailed embodiments. First, the controller obtains the ambient temperature (i.e. the warehouse temperature parameter) according to the temperature detector of the cold storage, obtains the wet-bulb temperature according to the humidity detector (i.e. the wet bulb), and calculates the humidity content S in the cold storage space according to the ambient temperature T and the wet-bulb temperature Ts. According to the preset warehouse temperature threshold range (for example, 2-8℃) and the humidity content, the relative humidity at each set temperature is obtained. Then, in combination with the relative humidity and the preset humidity range, if each relative humidity is greater than the maximum value of the preset humidity range, dehumidification is started; if each relative humidity is less than the minimum value of the preset humidity range, humidification is started.

[0130] Please refer to Figure 12 After the dehumidification is started, first, the dehumidification evaporator (i.e. the first evaporator) is started to operate at a preset fan frequency (which can be the lowest fan frequency or other, not limited), and the controller synchronously obtains the inlet and outlet humidity parameters of the first evaporator, calculates the inlet and outlet relative humidity, and calculates the dehumidification amount (i.e. the dehumidification efficiency parameter) in one minute in combination with the preset time. At the same time, the controller calculates the predicted dehumidification time required for humidifying to the humidity parameter of (1-5%) As2 in combination with the currently obtained humidity content S, the maximum value As2 of the preset humidity range, and the dehumidification efficiency, and then compares and analyzes it with the preset time threshold (set to 30 minutes).

[0131] If the predicted dehumidification time is less than or equal to the preset time threshold, the warehouse temperature parameter is obtained in real time and whether it changes is detected. If the warehouse temperature parameter increases, the fan frequency of the first evaporator is increased, and whether the warehouse temperature parameter is less than or equal to the preset highest warehouse temperature threshold (the maximum value Tg-1 of the preset warehouse temperature threshold range) is further detected. If the warehouse temperature parameter is less than or equal to the preset highest warehouse temperature threshold, the first evaporator is maintained to operate at the increased fan frequency (or the fan frequency is continuously increased); if the warehouse temperature parameter is greater than the preset highest warehouse temperature threshold, the second evaporator needs to be started to cool.

[0132] If the warehouse temperature parameter does not change, the first fan can be maintained to operate at the preset fan frequency; if the warehouse temperature parameter decreases, the fan frequency of the first evaporator needs to be reduced, and whether the warehouse temperature parameter is less than or equal to the preset lowest warehouse temperature threshold (which can be set to the minimum value Td+1 of the preset warehouse temperature threshold range) is further detected. If the warehouse temperature parameter is less than or equal to the preset lowest warehouse temperature threshold, the second evaporator is started to heat; if the warehouse temperature parameter is greater than the preset lowest warehouse temperature threshold, the first evaporator is controlled to maintain to operate at the reduced fan frequency. Finally, the humidity parameter is less than (1-5%) As2 through the dehumidification operation.

[0133] If it is detected that the expected dehumidification time is greater than the preset time threshold, only the first fan position is controlled to run at a preset fan frequency, and the detection of the warehouse temperature parameter is started. If the warehouse temperature parameter increases, the second evaporator is started to perform refrigeration, and if the warehouse temperature parameter decreases, it is further analyzed whether it is less than or equal to the preset minimum warehouse temperature threshold. If the warehouse temperature parameter is less than or equal to the preset minimum warehouse temperature threshold, the second evaporator is started to perform heating, and if the warehouse temperature parameter is greater than the preset minimum warehouse temperature threshold, only the first evaporator is maintained to run.

[0134] Please refer to Figure 13 , if the verification meets the humidification opening condition, enter the humidification mode. First, the controller analyzes whether it is in the frosting state according to the temperature difference between the inlet and outlet of each evaporator. If the temperature difference is less than or equal to the preset temperature threshold, it is considered to be frosting, otherwise it is considered not to be frosting. When it is detected that both evaporators are frosting, the second evaporator and the first evaporator are started to defrost in turn, and when the first evaporator is started to defrost, the warehouse temperature parameter is analyzed. When the warehouse temperature parameter is too high or too low, the second evaporator is controlled to adjust the temperature. If only one of the two evaporators is detected to be frosting, only the frosting evaporator is started to defrost, and during the process, the warehouse temperature parameter is analyzed. When the warehouse temperature parameter is too high or too low, the other evaporator is controlled to adjust the temperature. If both evaporators are not frosting, the humidifier is directly controlled to be turned on at this time, so that the humidifier can humidify according to the pre-stored water.

[0135] And, in the case that both evaporators are not frosting, the controller needs to match the current required warehouse temperature according to the humidity parameter and the preset humidity and warehouse temperature corresponding relationship. If the current required warehouse temperature is within the preset warehouse temperature threshold range, the warehouse temperature of the cold storage is adjusted to the current required warehouse temperature. If the current warehouse temperature is not within the preset warehouse temperature threshold range, the warehouse temperature is adjusted to the warehouse temperature matched by the maximum value of the preset humidity range. Finally, the controller analyzes the required water supplement amount by combining the minimum value As1 of the preset humidity range to control the humidifier to run for humidification until the humidity parameter is greater than (1+5%) As1.

[0136] Please refer to Figure 14 , the application also provides a cold storage control device, comprising: a humidity verification module 142, a dehumidification module 144, a warehouse temperature acquisition module 146, and a warehouse temperature adjustment module 148.

[0137] The humidity verification module 142 is used to acquire the humidity parameter of the cold storage in real time and perform verification; the dehumidification module 144 is used to control the first evaporator of the cold storage to be started to perform dehumidification if the verification meets the dehumidification opening condition; the warehouse temperature acquisition module 146 is used to acquire the warehouse temperature parameter of the cold storage; and the warehouse temperature adjustment module 148 is used to control the second evaporator of the cold storage to be started to perform warehouse temperature adjustment according to the warehouse temperature parameter, until the humidity parameter verification meets the dehumidification stop condition.

[0138] In one embodiment, the dehumidification module 144 is further configured to, if the check satisfies the dehumidification opening condition, control the first evaporator of the cold storage to start dehumidification at a preset fan frequency.

[0139] In one embodiment, the storage temperature adjustment module 148 is further configured to obtain the inlet and outlet relative humidity of the first evaporator; analyze the inlet and outlet relative humidity and the humidity parameter to obtain a predicted dehumidification time; and control the second evaporator of the cold storage to open for storage temperature adjustment according to the predicted dehumidification time and the storage temperature parameter.

[0140] In one embodiment, the storage temperature adjustment module 148 is further configured to analyze the inlet and outlet relative humidity to obtain a dehumidification efficiency parameter; and analyze the humidity parameter, the dehumidification efficiency parameter, and a preset target humidity parameter to obtain a predicted dehumidification time.

[0141] In one embodiment, the storage temperature adjustment module 148 is further configured to, if the predicted dehumidification time is less than or equal to a preset time threshold, detect whether the storage temperature parameter changes; if the storage temperature parameter changes, adjust the fan frequency of the first evaporator for dehumidification and control the second evaporator of the cold storage to open for storage temperature adjustment; and if the storage temperature parameter does not change, control the first evaporator to maintain the preset fan frequency for dehumidification.

[0142] In one embodiment, the storage temperature adjustment module 148 is further configured to, if the storage temperature parameter increases, increase the fan frequency of the first evaporator for dehumidification; detect whether the storage temperature parameter is greater than a preset maximum storage temperature threshold; if the storage temperature parameter is greater than the preset maximum storage temperature threshold, control the second evaporator of the cold storage to open for refrigeration; and if the storage temperature parameter is less than or equal to the preset maximum storage temperature threshold, control the first evaporator to continue dehumidification at the increased fan frequency.

[0143] In one embodiment, the storage temperature adjustment module 148 is further configured to, if the storage temperature parameter decreases, decrease the fan frequency of the first evaporator for dehumidification; detect whether the storage temperature parameter is greater than a preset minimum storage temperature threshold; if the storage temperature parameter is less than or equal to the preset minimum storage temperature threshold, control the second evaporator of the cold storage to open for heating; and if the storage temperature parameter is greater than the preset minimum storage temperature threshold, control the first evaporator to continue dehumidification at the decreased fan frequency.

[0144] In one embodiment, the storage temperature adjustment module 148 is further configured to, if the predicted dehumidification time is greater than a preset time threshold, control the first evaporator to maintain the preset fan frequency for dehumidification and detect whether the storage temperature parameter changes; if the storage temperature parameter changes, control the second evaporator of the cold storage to open for storage temperature adjustment; and if the storage temperature parameter does not change, control the first evaporator to maintain the preset fan frequency for dehumidification.

[0145] In one embodiment, the warehouse temperature adjustment module 148 is further configured to, if the warehouse temperature parameter increases, control the second evaporator of the cold storage to start refrigeration; if the warehouse temperature parameter decreases, detect whether the warehouse temperature parameter is less than or equal to a preset minimum warehouse temperature threshold; and if the warehouse temperature parameter is less than or equal to the preset minimum warehouse temperature threshold, control the second evaporator to start heating.

[0146] Referring to Figure 15 In one embodiment, after the humidity verification module 142, the device further comprises a humidification module 152.

[0147] The humidification module 152 is configured to, if the verification satisfies the humidification start condition, detect the frosting state of the first evaporator and the second evaporator; and according to the frosting state, control the first evaporator and the second evaporator to start defrosting and humidification until the humidity parameter verification satisfies the humidification stop condition.

[0148] In one embodiment, the humidification module 152 is further configured to detect whether the temperature difference between the inlet and outlet of the first evaporator is less than or equal to a preset temperature threshold; if the temperature difference between the inlet and outlet of the first evaporator is less than or equal to the preset temperature threshold, the first evaporator is frosted; detect whether the temperature difference between the inlet and outlet of the second evaporator is less than or equal to the preset temperature threshold; and if the temperature difference between the inlet and outlet of the second evaporator is less than or equal to the preset temperature threshold, the second evaporator is frosted.

[0149] In one embodiment, the humidification module 152 is further configured to implement any one of the following:

[0150] The first one: if both the first evaporator and the second evaporator are frosted, control the second evaporator to start defrosting and humidification; if the second evaporator completes defrosting, control the first evaporator to start defrosting and humidification, and simultaneously control the second evaporator to start warehouse temperature adjustment according to the warehouse temperature parameter;

[0151] The second one: if any one of the first evaporator and the second evaporator is frosted, control the evaporator that is frosted to start defrosting and humidification, and simultaneously control the evaporator that is not frosted to start warehouse temperature adjustment according to the warehouse temperature parameter;

[0152] The third one: if both the first evaporator and the second evaporator are not frosted, control the humidifier of the cold storage to start humidification according to the humidity parameter.

[0153] In one embodiment, the humidification module 152 is further configured to perform warehouse temperature adjustment according to the humidity parameter, and output an alarm prompt information.

[0154] In one embodiment, the humidification module 152 is further configured to match the current required warehouse temperature according to the humidity parameter and a preset correspondence between the humidity and the warehouse temperature, and to adjust the warehouse temperature of the cold storage to the current required warehouse temperature if the current required warehouse temperature is within a preset warehouse temperature threshold range, or to adjust the warehouse temperature to the warehouse temperature matched by the maximum value of the preset humidity range if the current warehouse temperature is not within the preset warehouse temperature threshold range.

[0155] In one embodiment, the humidity verification module 152 is further configured to obtain the moisture content of the cold storage, to analyze the moisture content to obtain the relative humidity of the cold storage, and to verify whether the dehumidification opening condition is met according to the relative humidity. The dehumidification opening condition is met if the relative humidity is greater than the maximum value of the preset humidity range, and the humidification opening condition is met if the relative humidity is less than the minimum value of the preset humidity range.

[0156] The above-mentioned modules in the cold storage control device can be implemented in whole or in part by software, hardware, or a combination thereof. The above-mentioned modules can be embedded in or independent of the processor in the computer device in hardware form, or can be stored in the memory in the computer device in software form, so as to be called and executed by the processor to perform the operations corresponding to the above-mentioned modules.

[0157] The above-mentioned cold storage control device is provided with a first evaporator for dehumidification and a second evaporator for temperature regulation in the cold storage. In actual operation, if the dehumidification opening condition is met according to the humidity parameter of the cold storage, the first evaporator is controlled to be opened for dehumidification, and the warehouse temperature parameter of the cold storage can be obtained in real time, and the second evaporator is combined to regulate the warehouse temperature. The above-mentioned scheme can regulate the warehouse temperature by the second evaporator while dehumidifying by the first evaporator, and can adjust the temperature and humidity of the cold storage at the same time, so as to realize accurate temperature and humidity control, and has better dehumidification and temperature regulation reliability.

[0158] Please refer to Figure 16 A warehouse temperature control system includes a humidity detector 161, a first evaporator 163, a second evaporator 164, a temperature detector 162, and a controller 165. The humidity detector 161, the first evaporator 163, the second evaporator 164, and the temperature detector 162 are connected to the controller 165. The humidity detector 161 is configured to detect the humidity parameter of the cold storage, the temperature detector 162 is configured to detect the warehouse temperature parameter of the cold storage, and the controller 165 is configured to control the cold storage according to the cold storage control method of any one of the above-mentioned embodiments.

[0159] Specifically, the cold storage control method is as shown in the above-mentioned embodiments and the accompanying drawings, which will not be described here. Further, please refer to Figure 17The cold storage control system further comprises a condenser, a liquid accumulator, a drying filter, a vapor separator, a four-way valve, a compressor, a suction filter, a suction stop valve, a liquid supply stop valve, an electronic expansion valve, and an electromagnetic valve. The condenser, the vapor separator, and the compressor are connected in series, the vapor separator is connected to the compressor, the suction filter is connected to the first evaporator 163 through the suction stop valve, the liquid accumulator is connected to the condenser, the liquid accumulator is connected to the liquid supply stop valve through the drying filter, the liquid supply stop valve is connected to the suction stop valve and the second evaporator 164, and the first evaporator 163 and the second evaporator 164 are connected through the electromagnetic valve. Meanwhile, the first evaporator 163 is connected to the suction stop valve and the liquid supply stop valve through the electronic expansion valve and the electromagnetic valve, respectively, and the second evaporator 164 is connected to the suction stop valve and the liquid supply stop valve through the electronic expansion valve and the electromagnetic valve, respectively. Through the above structure, the refrigerant supply of the first evaporator 163 and the second evaporator 164 is ensured, and the humidity and temperature control is realized under the control of the controller 165.

[0160] Further, in one embodiment, the cold storage control system further comprises a humidifier, the first evaporator 163, the second evaporator 164, and the controller 165 are connected to the humidifier, and the water generated by the first evaporator 163 and the second evaporator 164 during the defrosting process can be transmitted to the humidifier. The humidifier can realize humidification operation under the control of the controller 165. The specific implementation manner is as shown in the above embodiment, which will not be described here.

[0161] The above cold storage control system is provided with the first evaporator 163 for dehumidification and the second evaporator 164 for temperature regulation in the cold storage. In actual operation, if the dehumidification opening condition is met according to the humidity parameter of the cold storage, the first evaporator 163 is controlled to be opened for dehumidification, and the temperature parameter of the cold storage can be obtained in real time, and the second evaporator 164 is combined to realize the temperature regulation of the cold storage. The above scheme can realize the temperature and humidity regulation of the cold storage while the first evaporator 163 is dehumidified and the second evaporator 164 is used for temperature regulation, so as to realize the precise temperature and humidity control, and has better dehumidification and temperature regulation reliability.

[0162] The technical features of the above embodiments can be combined arbitrarily. In order to make the description simple, all possible combinations of the technical features in the above embodiments are not described, however, as long as the combinations of the technical features do not exist contradictory, they should be considered as the scope of the present disclosure.

[0163] The above embodiments only express several implementation ways of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation to the patent scope of the application. It should be pointed out that for ordinary skilled persons in the art, several modifications and improvements can be made without departing from the concept of the present application, which all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A cold storage control method characterized by, The method comprises the following steps: real-time acquisition of humidity parameters of the cold storage and verification; if the verification meets the dehumidification start condition, the first evaporator of the cold storage is controlled to start dehumidification at a preset fan frequency; during the dehumidification process of the first evaporator, the temperature parameter of the cold storage is acquired; the inlet and outlet relative humidity of the first evaporator is acquired, and the dehumidification time is predicted according to the analysis of the inlet and outlet relative humidity and the humidity parameter, and the second evaporator of the cold storage is controlled to start temperature regulation until the humidity parameter verification meets the dehumidification stop condition.

2. The cold storage control method according to claim 1, characterized by, The analysis of the inlet and outlet relative humidity and the humidity parameter to predict the dehumidification time comprises: the dehumidification efficiency parameter is obtained by analyzing the inlet and outlet relative humidity; the dehumidification time is predicted by analyzing the humidity parameter, the dehumidification efficiency parameter and the preset target humidity parameter.

3. The cold storage control method according to claim 1, characterized by, The control of the second evaporator of the cold storage to start temperature regulation according to the dehumidification time and the temperature parameter comprises: if the dehumidification time is less than or equal to the preset time threshold, it is detected whether the temperature parameter changes; if the temperature parameter changes, the fan frequency of the first evaporator is adjusted for dehumidification, and the second evaporator of the cold storage is controlled to start temperature regulation; if the temperature parameter does not change, the first evaporator is controlled to maintain the preset fan frequency for dehumidification.

4. The cold store control method of claim 3, wherein, If the temperature parameter changes, the fan frequency of the first evaporator is adjusted for dehumidification, and the second evaporator of the cold storage is controlled to start temperature regulation, which comprises: if the temperature parameter rises, the fan frequency of the first evaporator is increased for dehumidification; it is detected whether the temperature parameter is greater than the preset maximum temperature threshold; if the temperature parameter is greater than the preset maximum temperature threshold, the second evaporator of the cold storage is controlled to start refrigeration; if the temperature parameter is less than or equal to the preset maximum temperature threshold, the first evaporator is controlled to continue dehumidification at the increased fan frequency.

5. The cold storage control method according to claim 3, characterized by, If the temperature parameter changes, the fan frequency of the first evaporator is adjusted for dehumidification, and the second evaporator of the cold storage is controlled to start temperature regulation, which comprises: if the temperature parameter decreases, the fan frequency of the first evaporator is decreased for dehumidification; it is detected whether the temperature parameter is greater than the preset minimum temperature threshold; if the temperature parameter is less than or equal to the preset minimum temperature threshold, the second evaporator of the cold storage is controlled to start heating; if the temperature parameter is greater than the preset minimum temperature threshold, the first evaporator is controlled to continue dehumidification at the decreased fan frequency.

6. The cold store control method of claim 1, wherein, The control of the second evaporator of the cold storage to start temperature regulation according to the dehumidification time and the temperature parameter comprises: if the dehumidification time is greater than the preset time threshold, the first evaporator is controlled to maintain the preset fan frequency for dehumidification, and it is detected whether the temperature parameter changes; If the library temperature parameter changes, the second evaporator of the cold storage is controlled to be turned on for library temperature regulation. If the library temperature parameter does not change, the first evaporator is controlled to maintain a preset fan frequency for dehumidification.

7. The cold store control method of claim 6, wherein, If the library temperature parameter changes, the second evaporator of the cold storage is controlled to be turned on for library temperature regulation, including: If the library temperature parameter rises, the second evaporator of the cold storage is controlled to be turned on for refrigeration; If the library temperature parameter decreases, it is detected whether the library temperature parameter is less than or equal to a preset minimum library temperature threshold; If the library temperature parameter is less than or equal to the preset minimum library temperature threshold, the second evaporator is controlled to be turned on for heating.

8. The cold store control method according to any one of claims 1-7, characterized in that, After the real-time acquisition of the humidity parameter of the cold storage and the verification, further including: If the verification meets the humidification opening condition, the frosting state of the first evaporator and the second evaporator is detected; According to the frosting state, the first evaporator and the second evaporator are controlled to be turned on for defrosting and humidification until the humidity parameter verification meets the humidification cutoff condition.

9. The cold store control method of claim 8, wherein, The detection of the frosting state of the first evaporator and the second evaporator includes: It is detected whether the inlet and outlet temperature difference of the first evaporator is less than or equal to a preset temperature threshold; if the inlet and outlet temperature difference of the first evaporator is less than or equal to a preset temperature threshold, the first evaporator is frosted; It is detected whether the inlet and outlet temperature difference of the second evaporator is less than or equal to a preset temperature threshold; if the inlet and outlet temperature difference of the second evaporator is less than or equal to a preset temperature threshold, the second evaporator is frosted.

10. The cold store control method of claim 8, wherein, According to the frosting state, the first evaporator and the second evaporator are controlled to be turned on for defrosting and humidification, including any one of the following: First: If the first evaporator and the second evaporator are both frosted, the second evaporator is controlled to be turned on for defrosting and humidification; If the second evaporator defrosting is completed, the first evaporator is controlled to be turned on for defrosting and humidification, and the second evaporator is controlled to be turned on for library temperature regulation according to the library temperature parameter; Second: If any one of the first evaporator and the second evaporator is frosted, the evaporator with frosting is controlled to be turned on for defrosting and humidification, and the evaporator without frosting is controlled to be turned on for library temperature regulation according to the library temperature parameter; Third: If the first evaporator and the second evaporator are both not frosted, the humidifier of the cold storage is controlled to be turned on for humidification according to the humidity parameter.

11. The cold store control method of claim 10, wherein, If the first evaporator and the second evaporator are both not frosted, further including: The humidity parameter is used for library temperature regulation, and an alarm prompt information is output.

12. The cold store control method of claim 11, wherein, According to the humidity parameter, the library temperature is regulated, including: According to the humidity parameter and the preset correspondence between humidity and library temperature, the current required library temperature is matched; If the current required library temperature is within the preset library temperature threshold range, the library temperature of the cold storage is regulated to the current required library temperature; If the current library temperature is not within the preset library temperature threshold range, the library temperature is regulated to the library temperature matched with the maximum value of the preset humidity range.

13. The cold store control method of claim 1, wherein, The real-time acquisition of the humidity parameter of the cold storage and the verification includes: The moisture content of the cold storage is acquired; According to the moisture content, the relative humidity of the cold storage is obtained; According to the relative humidity, it is checked whether the dehumidification opening condition is met; if the relative humidity is greater than the maximum value of a preset humidity range, it is checked that the dehumidification opening condition is met, and if the relative humidity is less than the minimum value of the preset humidity range, it is checked that the humidification opening condition is met.

14. A cold storage control device characterized by comprising: Comprise: A humidity checking module for acquiring and checking the humidity parameter of the cold storage in real time; A dehumidification module for controlling the first evaporator of the cold storage to start dehumidification at a preset fan frequency if the checking meets the dehumidification opening condition; A storage temperature acquisition module for acquiring the storage temperature parameter of the cold storage during the dehumidification process of the first evaporator; A storage temperature adjusting module for acquiring the inlet and outlet relative humidity of the first evaporator, analyzing the expected dehumidification time according to the inlet and outlet relative humidity and the humidity parameter, and controlling the second evaporator of the cold storage to start storage temperature adjustment according to the expected dehumidification time and the storage temperature parameter until the checking of the humidity parameter meets the dehumidification cutoff condition.

15. A library temperature control system, characterized by, Comprise a humidity detector, a first evaporator, a second evaporator, a temperature detector and a controller, the humidity detector, the first evaporator, the second evaporator and the temperature detector are connected to the controller respectively, the humidity detector is used for detecting the humidity parameter of the cold storage, the temperature detector is used for detecting the storage temperature parameter of the cold storage, and the controller is used for controlling the cold storage according to the cold storage control method of any one of claims 1-13.

Images