Warehouse environment control method and device, refrigeration equipment and medium

Abstract

The embodiment of the invention provides a warehouse environment control method and device, refrigeration equipment and a medium. The method comprises the steps that return air humidity and return air temperature detected by a sensor arranged on an evaporator are obtained; the humidity state is determined according to the return air humidity, and the temperature state is determined according to the return air temperature; under the condition that the humidity state is a high-humidity state and the temperature state is a high-temperature state, dehumidification and cooling treatment is carried out; under the condition that the humidity state is a low-humidity state and the temperature state is a high-temperature state, performing moisturizing and cooling treatment; under the condition that the humidity state is a high-humidity state and the temperature state is a low-temperature state, dehumidification constant-temperature treatment is carried out; and under the condition that the humidity state is a low-humidity state and the temperature state is a low-temperature state, performing moisturizing constant-temperature treatment. According to the embodiment of the invention, different treatments are respectively carried out according to the humidity state and the temperature state under different conditions, so that accurate control of the warehouse environment is realized, and the use performance of the warehouse is improved.

Description

Technical Field

[0001] The present invention relates to the field of environmental control technology, and in particular to a warehouse environmental control method, device, refrigeration equipment and computer-readable storage medium. Background Art

[0002] With the improvement of industrial level, the use of refrigeration equipment in industrial environments is becoming more and more common, and at the same time, the requirements for the use of refrigeration equipment in industrial environments are becoming higher and higher.

[0003] In the related art, refrigeration equipment is installed in the warehouse to control the temperature in the warehouse. The control is usually performed by detecting the temperature in the warehouse. When the temperature does not reach a preset temperature, the temperature is lowered, and the temperature is stopped after the temperature reaches the preset temperature.

[0004] Since the control is only based on the preset temperature, the warehouse environment cannot be accurately controlled in time, resulting in the warehouse environment not being able to meet the storage requirements well, which can easily cause the loss of stored items and the low warehouse performance. Summary of the invention

[0005] In view of the above problems, embodiments of the present invention are proposed to provide a warehouse environment control method, device, refrigeration equipment and computer-readable storage medium that overcome the above problems or at least partially solve the above problems.

[0006] On the one hand, an embodiment of the present invention provides a method for controlling the environment of a warehouse, wherein a refrigeration device is provided in the warehouse, and the refrigeration device includes an evaporator. The method includes:

[0007] Acquiring return air humidity and return air temperature detected by a sensor disposed on the evaporator;

[0008] After the refrigeration device starts a refrigeration mode, determining a humidity state according to the return air humidity, and determining a temperature state according to the return air temperature;

[0009] When the humidity state is a high humidity state and the temperature state is a high temperature state, performing a dehumidification and cooling process;

[0010] When the humidity state is a low humidity state and the temperature state is a high temperature state, performing a moisturizing and cooling treatment;

[0011] When the humidity state is the high humidity state and the temperature state is the low temperature state, performing a dehumidification and constant temperature treatment;

[0012] When the humidity state is the low humidity state and the temperature state is the low temperature state, a moisturizing and thermostatic treatment is performed.

[0013] Optionally, determining the humidity state according to the return air humidity, and determining the temperature state according to the return air temperature, includes:

[0014] When the return air humidity is greater than a first preset humidity threshold, it is determined to be in the high humidity state;

[0015] When the return air humidity is less than the second preset humidity threshold, it is determined to be the low humidity state; the first preset humidity threshold is greater than the second preset humidity threshold;

[0016] When the return air temperature is greater than a first preset temperature threshold, it is determined to be the high temperature state;

[0017] When the return air temperature is lower than the second preset temperature threshold, it is determined to be the low temperature state; and the first preset temperature threshold is higher than the second preset temperature threshold.

[0018] Optionally, the first preset humidity threshold is the sum of the reference humidity and the humidity control accuracy;

[0019] The second preset humidity threshold is the difference between the reference humidity and the humidity control accuracy;

[0020] The first preset temperature threshold is the sum of the reference temperature and the temperature control accuracy;

[0021] The second preset humidity threshold is a difference between the reference temperature and the temperature control accuracy.

[0022] Optionally, the refrigeration equipment further comprises: an evaporating fan, an electronic expansion valve and a compressor;

[0023] The dehumidification and cooling process comprises:

[0024] reducing the opening of the electronic expansion valve, reducing the operating frequency of the evaporating fan, and increasing the operating frequency of the compressor;

[0025] The moisturizing and cooling treatment comprises:

[0026] Increasing the opening of the electronic expansion valve, increasing the operating frequency of the evaporating fan, and increasing the operating frequency of the compressor;

[0027] The dehumidification and constant temperature treatment comprises:

[0028] reducing the opening of the electronic expansion valve, reducing the operating frequency of the evaporating fan, and reducing the operating frequency of the compressor;

[0029] The moisturizing and constant temperature treatment comprises:

[0030] The opening of the electronic expansion valve is increased, the operating frequency of the evaporating fan is increased, and the operating frequency of the compressor is reduced.

[0031] Optionally, reducing the opening of the electronic expansion valve includes:

[0032] Obtaining actual suction superheat and first target suction superheat;

[0033] determining a first opening adjustment amount according to the first target suction superheat and the actual suction superheat;

[0034] The opening of the electronic expansion valve is reduced according to the first opening adjustment amount.

[0035] Optionally, increasing the opening of the electronic expansion valve includes:

[0036] Obtaining actual suction superheat and second target suction superheat;

[0037] determining a second opening adjustment amount according to the second target suction superheat and the actual suction superheat;

[0038] The opening of the electronic expansion valve is increased according to the second opening adjustment amount.

[0039] Optionally, the refrigeration equipment further comprises: a suction temperature sensor and a suction pressure sensor;

[0040] The obtaining of actual suction superheat comprises:

[0041] Acquiring the intake air temperature detected by the intake air temperature sensor;

[0042] Acquiring the suction pressure detected by the suction pressure sensor;

[0043] Acquiring a mapping relationship between the suction pressure and the evaporation temperature;

[0044] Determining the evaporation temperature corresponding to the suction pressure according to a mapping relationship between the suction pressure and the evaporation temperature;

[0045] The actual suction air superheat is determined according to the suction air temperature and the evaporation temperature.

[0046] Optionally, determining a first opening adjustment amount according to the first target suction superheat and the actual suction superheat includes:

[0047] determining a first difference between the first target suction air superheat and the actual suction air superheat;

[0048] When the absolute value of the first difference is greater than or equal to a first value, determining a first opening adjustment amount according to the first target intake superheat and the actual intake superheat;

[0049] When the absolute value of the first difference is smaller than the first value, the first opening adjustment amount is determined to be 0.

[0050] Optionally, determining the second opening adjustment amount according to the second target suction superheat and the actual suction superheat includes:

[0051] determining a second difference between the second target suction air superheat and the actual suction air superheat;

[0052] When the absolute value of the second difference is greater than or equal to a second value, determining a second opening adjustment amount according to the second target suction superheat and the actual suction superheat;

[0053] When the absolute value of the second difference is smaller than the second value, the second opening adjustment amount is determined to be 0.

[0054] On the other hand, an embodiment of the present invention provides an environment control device for a warehouse, the device comprising:

[0055] A detection module, used for obtaining the return air humidity and return air temperature detected by a sensor disposed on the evaporator;

[0056] A first state determination module, configured to determine a humidity state according to the return air humidity and a temperature state according to the return air temperature after the refrigeration device turns on a refrigeration mode;

[0057] A first processing module, used for performing dehumidification and cooling processing when the humidity state is a high humidity state and the temperature state is a high temperature state;

[0058] A second processing module is used for performing a moisturizing and cooling process when the humidity state is a low humidity state and the temperature state is a high temperature state;

[0059] A third processing module is used for performing dehumidification and constant temperature processing when the humidity state is the high humidity state and the temperature state is the low temperature state;

[0060] The fourth processing module is used for performing moisturizing and constant temperature processing when the humidity state is the low humidity state and the temperature state is the low temperature state.

[0061] On the other hand, an embodiment of the present invention provides a refrigeration device, including: a processor, a memory, and a computer program stored in the memory and capable of running on the processor, and when the computer program is executed by the processor, the steps of the warehouse environment control method as described above are implemented.

[0062] On the other hand, an embodiment of the present invention provides a computer-readable storage medium, characterized in that a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the steps of the warehouse environment control method as described above are implemented.

[0063] The embodiments of the present invention include the following advantages:

[0064] By detecting the return air humidity and return air temperature through the sensor installed on the evaporator, the warehouse environment humidity and temperature can be obtained in a timely manner. After the refrigeration mode is turned on, the humidity state and temperature state are determined according to the return air humidity and return air temperature, and dehumidification and cooling treatment, moisturizing and cooling treatment, dehumidification and constant temperature treatment, and moisturizing and constant temperature treatment are performed according to the humidity state and temperature state in four different situations. Temperature and humidity are considered at the same time, and the four possible situations are fully considered, so as to achieve accurate control of the warehouse environment and improve the use performance of the warehouse. BRIEF DESCRIPTION OF THE DRAWINGS

[0065] Figure 1 It is a flowchart of the steps of a warehouse environment control method provided by an embodiment of the present invention;

[0066] Figure 2 is a structural schematic diagram of a refrigeration device provided by an embodiment of the present invention;

[0067] Figure 3 It is a structural block diagram of an environment control device for a warehouse provided by an embodiment of the present invention.

[0068] The reference numerals are as follows:

[0069] 201: evaporator; 202: return air humidity sensor; 203: return air temperature sensor; 204: evaporating fan; 205: electronic expansion valve; 206: compressor; 207: suction temperature sensor; 208: suction pressure sensor. DETAILED DESCRIPTION

[0070] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0071] In the related art, refrigeration equipment is installed in the warehouse to control the temperature in the warehouse. It is usually controlled by detecting the temperature in the warehouse. When the temperature does not reach the preset temperature, the temperature is lowered, and the temperature is stopped after the temperature reaches the preset temperature. Due to the low accuracy of temperature control, the warehouse environment cannot be accurately controlled in time, resulting in the warehouse environment not meeting the storage requirements within a certain period of time, which is easy to cause the loss of stored items.

[0072] In the embodiment of the present invention, the temperature and humidity of the warehouse environment are taken into consideration at the same time, and four possible situations are fully taken into consideration. According to the humidity state and temperature state in different situations, dehumidification and cooling treatment, moisturizing and cooling treatment, dehumidification and constant temperature treatment and moisturizing and constant temperature treatment are respectively set, thereby realizing accurate control of the warehouse environment and improving the use performance of the warehouse.

[0073] Figure 1 It is a flow chart of the steps of a warehouse environment control method provided by an embodiment of the present invention.

[0074] like Figure 1 As shown, the method may specifically include the following steps:

[0075] Step 101, obtaining the return air humidity and return air temperature detected by a sensor disposed on the evaporator;

[0076] Figure 2 It is a structural schematic diagram of a refrigeration device provided by an embodiment of the present invention.

[0077] A refrigeration device is provided in the warehouse described in the embodiment of the present invention.

[0078] The warehouse may be a granary, a freezing warehouse, a medicine warehouse, or any other place of any specifications for storing materials, and the present invention does not impose any limitation on this.

[0079] The refrigeration equipment may be a split air conditioner, a central air conditioner, an industrial cold circulation system, or other equipment used for refrigeration, and the present invention does not impose any limitation on this.

[0080] like Figure 2 As shown, the refrigeration device includes an evaporator 201 , on which a return air humidity sensor 202 and a return air temperature sensor 203 are provided.

[0081] The evaporator 201 in the refrigeration equipment absorbs heat from the air through the evaporation process of the refrigerant, thereby reducing the temperature in the warehouse and controlling the humidity.

[0082] Specifically, when the refrigeration device is in a powered-on state, the return air humidity detected by the return air humidity sensor 202 provided on the evaporator 201 and the return air temperature detected by the return air temperature sensor 203 provided on the evaporator 201 are received in real time.

[0083] The refrigeration equipment determines the humidity and temperature in the warehouse based on the return air humidity and return air temperature detected by the sensor on the evaporator, and can obtain relatively accurate warehouse ambient temperature and temperature in a timely manner.

[0084] Step 102, after the refrigeration device starts the refrigeration mode, determining the humidity state according to the return air humidity, and determining the temperature state according to the return air temperature;

[0085] Specifically, when the refrigeration equipment receives a power-on command, it compares the return air temperature detected in step 101 with the set target warehouse temperature. If the detected return air temperature is greater than the set target warehouse temperature, the warehouse needs to be cooled, and the refrigeration equipment turns on the cooling mode.

[0086] If the detected return air temperature is less than or equal to the set target warehouse temperature, there is no need to cool the warehouse and the refrigeration equipment maintains its original state.

[0087] In some embodiments, step 102 may include the following sub-steps:

[0088] Sub-step S11, when the return air humidity is greater than a first preset humidity threshold, determining it as the high humidity state;

[0089] Sub-step S12, when the return air humidity is less than a second preset humidity threshold, it is determined to be the low humidity state; the first preset humidity threshold is greater than the second preset humidity threshold;

[0090] A first preset humidity threshold and a second preset humidity threshold are set, and the first preset humidity threshold is greater than the second preset humidity threshold. The two are compared with the return air humidity to determine the humidity state of the warehouse.

[0091] When the return air humidity is greater than the first preset humidity threshold, it is determined to be a high humidity state; when the return air humidity is within the range of the first preset humidity threshold and the second preset humidity threshold, the return air humidity is a medium humidity state; when the return air humidity is less than the second preset humidity threshold, it is determined to be a low humidity state.

[0092] Both high humidity and low humidity environments are not conducive to the long-term storage of goods in the warehouse, so they need to be treated to keep the humidity in the warehouse within an appropriate range.

[0093] Sub-step S13, when the return air temperature is greater than a first preset temperature threshold, determining it as the high temperature state;

[0094] Sub-step S14: when the return air temperature is lower than a second preset temperature threshold, it is determined to be the low temperature state; and the first preset temperature threshold is higher than the second preset temperature threshold.

[0095] A first preset temperature threshold and a second preset temperature threshold are set, and the first preset temperature threshold is greater than the second preset temperature threshold. The two are compared with the return air temperature to determine the temperature state of the warehouse.

[0096] When the return air temperature is greater than the first preset temperature threshold, it is determined to be a high temperature state; when the return air temperature is within the range of the first preset temperature threshold and the second preset temperature threshold, the return air temperature is a medium temperature state; when the return air temperature is less than the second preset temperature threshold, it is determined to be a low temperature state.

[0097] Both high and low temperature environments are not conducive to the long-term storage of items in the warehouse, so they need to be processed to keep the warehouse temperature within an appropriate range.

[0098] In some embodiments, the first preset humidity threshold is the sum of the reference humidity and the humidity control accuracy; the second preset humidity threshold is the difference between the reference humidity and the humidity control accuracy;

[0099] Specifically, a reference humidity is set, and the specific value of the reference humidity can be set according to the optimal storage humidity of the warehouse. At the same time, the humidity control accuracy is set, and the humidity control accuracy is used to control the sensitivity of the refrigeration equipment to changes in the humidity of the warehouse environment.

[0100] For example, the optimal storage humidity of a warehouse is 70%. If the humidity control accuracy is set to 5%, when the warehouse humidity is between 65% and 75%, the refrigeration equipment will judge it as a suitable humidity, thereby reducing the working time of the refrigeration equipment, saving energy and reducing costs.

[0101] If the humidity control accuracy is 1%, then if the humidity in the warehouse is higher than 71% or lower than 69%, the refrigeration equipment will start working to maintain the humidity in the warehouse. When the value of the stored items in the warehouse is high, the quality of the stored items can be well maintained to avoid unnecessary losses.

[0102] The first preset temperature threshold is the sum of the reference temperature and the temperature control accuracy; the second preset humidity threshold is the difference between the reference temperature and the temperature control accuracy.

[0103] Specifically, a reference temperature is set, and the specific value of the reference temperature can be set according to the optimal storage temperature of the warehouse. At the same time, the temperature control accuracy is set, and the temperature control accuracy is used to control the sensitivity of the refrigeration equipment to changes in the warehouse environment temperature.

[0104] For example, the optimal storage temperature of a warehouse is 6°C. If the temperature control accuracy is set to 10°C, when the warehouse temperature is between 16°C and -4°C, the refrigeration equipment will judge it as a suitable temperature, thereby reducing the working time of the refrigeration equipment, saving energy and reducing costs.

[0105] If the temperature control accuracy is 1°C, the refrigeration equipment will judge it as a suitable temperature only when the warehouse temperature is between 5°C and 7°C. If the warehouse temperature is higher than 7°C or lower than 5°C, the refrigeration equipment will work immediately to maintain the warehouse temperature. When the warehouse storage items are of high value, the quality of the storage items can be well maintained to avoid unnecessary losses.

[0106] Step 103, when the humidity state is a high humidity state and the temperature state is a high temperature state, performing a dehumidification and cooling process;

[0107] In some embodiments, the refrigeration equipment further comprises: an evaporative fan, an electronic expansion valve, and a compressor;

[0108] like Figure 2 As shown, the refrigeration device includes an evaporator fan 204 , an electronic expansion valve 205 and a compressor 206 .

[0109] The evaporating fan 204 is used to inhale air, and after cooling it through the evaporator, the cold air is blown out through the fan to achieve circulation and cooling of the air in the warehouse.

[0110] The electronic expansion valve 205 receives a signal from the refrigeration equipment and adjusts the valve opening, thereby controlling the supply of refrigerant to ensure that the refrigeration equipment can operate in an optimal state.

[0111] The compressor 206 is responsible for compressing the low-pressure and low-temperature refrigerant gas into a high-pressure and high-temperature gas, providing power for the refrigeration cycle and ensuring that the refrigerant circulates continuously in the refrigeration equipment.

[0112] In the embodiment of the present invention, the step 103 may include: reducing the opening of the electronic expansion valve, reducing the operating frequency of the evaporating fan, and increasing the operating frequency of the compressor.

[0113] Specifically, by reducing the opening of the electronic expansion valve, the refrigerant flow rate is reduced, resulting in a slower evaporation rate of the refrigerant in the evaporator. This will lower the temperature of the evaporator surface. During the refrigeration process, the evaporator will absorb heat from the air and condense the water vapor in the air into water, thereby reducing the humidity in the warehouse.

[0114] By reducing the operating frequency of the evaporator fan, the evaporation amount of water mist in the evaporator fan is reduced, thereby reducing the volatilization of water into the air in the cooling mode and reducing the humidity in the warehouse.

[0115] By increasing the operating frequency of the compressor and increasing the circulation volume of the refrigerant, more low-temperature and low-pressure refrigerant can enter the evaporator to absorb heat from the indoor air, thereby quickly reducing the temperature in the warehouse.

[0116] In some embodiments, reducing the opening of the electronic expansion valve in step 103 specifically includes the following sub-steps:

[0117] Sub-step S21, obtaining an actual suction superheat and a first target suction superheat;

[0118] Sub-step S22, determining a first opening adjustment amount according to the first target intake superheat and the actual intake superheat;

[0119] Sub-step S23: reducing the opening of the electronic expansion valve according to the first opening adjustment amount.

[0120] Specifically, when the return air humidity is greater than the sum of the reference humidity and the humidity control accuracy, the first target suction superheat is selected and used to determine the opening degree of the electronic expansion valve.

[0121] In some embodiments, the refrigeration device further comprises: a suction temperature sensor and a suction pressure sensor;

[0122] like Figure 2 As shown, the refrigeration device is provided with a suction temperature sensor 207 and a suction pressure sensor 208. The suction temperature sensor 207 is used to detect the suction temperature of the compressor 206, and the suction pressure sensor 208 is used to detect the suction pressure of the compressor 206.

[0123] In some embodiments, sub-step S21 specifically includes the following detailed steps:

[0124] Acquiring the intake air temperature detected by the intake air temperature sensor;

[0125] Acquiring the suction pressure detected by the suction pressure sensor;

[0126] Acquiring a mapping relationship between the suction pressure and the evaporation temperature;

[0127] Determining the evaporation temperature corresponding to the suction pressure according to a mapping relationship between the suction pressure and the evaporation temperature;

[0128] The actual suction air superheat is determined according to the suction air temperature and the evaporation temperature.

[0129] Specifically, the difference between the intake air temperature detected by the intake air temperature sensor and the evaporation temperature corresponding to the intake air pressure is the actual intake air superheat.

[0130] In the cooling mode, the suction pressure refers to the pressure when the compressor sucks in the refrigerant gas, and the evaporation temperature refers to the temperature when the refrigerant evaporates in the evaporator. When the suction pressure increases, the saturated gas evaporation temperature will also increase accordingly; conversely, when the suction pressure decreases, the saturated gas evaporation temperature will decrease. This feature enables the refrigeration equipment to control the evaporation temperature by adjusting the suction pressure, thereby achieving precise regulation of the ambient temperature.

[0131] For a specific refrigerant, under a certain suction pressure, there is only one specific saturated gas evaporation temperature corresponding to it. By obtaining the mapping relationship between the suction pressure and the evaporation temperature, the magnitude of the evaporation temperature corresponding to the suction pressure can be determined.

[0132] In some embodiments, sub-step S22 specifically includes the following detailed steps:

[0133] determining a first difference between the first target suction air superheat and the actual suction air superheat;

[0134] When the absolute value of the first difference is greater than or equal to a first value, determining a first opening adjustment amount according to the first target intake superheat and the actual intake superheat;

[0135] When the absolute value of the first difference is smaller than the first value, the first opening adjustment amount is determined to be 0.

[0136] Determining the actual suction superheat is an important step in optimizing the operation and troubleshooting of refrigeration equipment. Suction superheat refers to the difference between the actual temperature of the refrigerant at the compressor suction port and its corresponding saturated gas evaporation temperature. This difference reflects the extent to which the refrigerant is above its saturation temperature before entering the compressor, which is crucial to ensure the normal operation of the compressor and improve system efficiency.

[0137] When the absolute value of the difference between the target suction superheat and the actual superheat is less than 1, it means that the suction superheat is controlled with high accuracy and can be stably maintained within a relatively ideal range. This helps to reduce the energy consumption of the compressor, improve the refrigeration efficiency of the system, and also helps to extend the service life of the compressor.

[0138] When the absolute value of the difference between the target suction superheat and the actual superheat is greater than 1, it means that the deviation between the actual superheat and the target superheat is large, and the opening of the electronic expansion valve needs to be adjusted to correct this deviation.

[0139] Specifically, the opening of the electronic expansion valve is adjusted according to a proportional-integral-derivative controller (PID). The opening adjustment amount of the electronic expansion valve is determined according to the following formula:

[0140] Δu=K p ·(e k -e k-1 )+K i ·e k +K j ·(e k -2e k-1 +e k-2 )

[0141] Among them, △u represents the control increment of the electronic expansion valve, that is, the opening adjustment amount; K p Represents the proportional coefficient, which is used to determine the influence of the current error on the control increment; K i Indicates the integral coefficient, which is used to eliminate static errors; K j Represents the differential coefficient, which is used to predict future errors based on the changing trend of the error, so as to make adjustments in advance and improve stability;

[0142] e k represents the difference between the target suction superheat degree obtained for the Kth time and the actual suction superheat degree; e k-1 represents the difference between the target suction superheat degree obtained for the K-1th time and the actual suction superheat degree; e k-1 It represents the difference between the target suction superheat and the actual suction superheat obtained at the K-2th time.

[0143] The control increment Δu of the electronic expansion valve is obtained by the above formula, which is used to adjust the opening of the electronic expansion valve, thereby achieving precise control of the refrigerant flow rate.

[0144] In addition, the coefficient K in the PID control algorithm p , Ki and K j The need can be determined according to specific control requirements, and the present invention is not limited to this.

[0145] Step 104, when the humidity state is the low humidity state and the temperature state is the high temperature state, performing a moisturizing and cooling process;

[0146] In the embodiment of the present invention, the step 104 may include: increasing the opening of the electronic expansion valve, increasing the operating frequency of the evaporating fan, and increasing the operating frequency of the compressor.

[0147] By reducing the opening of the electronic expansion valve, lowering the operating frequency of the evaporating fan and increasing the operating frequency of the compressor, the temperature in the warehouse can be quickly lowered while ensuring that the humidity in the warehouse is maintained at a more appropriate level.

[0148] In some embodiments, increasing the opening of the electronic expansion valve in step 104 specifically includes the following sub-steps:

[0149] Sub-step S31, obtaining an actual suction superheat and a second target suction superheat;

[0150] Sub-step S32, determining a second opening adjustment amount according to the second target suction superheat and the actual suction superheat;

[0151] Sub-step S33: increasing the opening of the electronic expansion valve according to the second opening adjustment amount.

[0152] Specifically, when the return air humidity is less than the difference between the reference humidity and the humidity control accuracy, the second target suction superheat is selected and used to determine the opening degree of the electronic expansion valve.

[0153] In some embodiments, the first target suction superheat is less than the second target suction superheat.

[0154] In some embodiments, sub-step S31 specifically includes the following detailed steps:

[0155] Acquiring the intake air temperature detected by the intake air temperature sensor;

[0156] Acquiring the suction pressure detected by the suction pressure sensor;

[0157] Acquiring a mapping relationship between the suction pressure and the evaporation temperature;

[0158] Determining the evaporation temperature corresponding to the suction pressure according to a mapping relationship between the suction pressure and the evaporation temperature;

[0159] The actual suction air superheat is determined according to the suction air temperature and the evaporation temperature.

[0160] In the cooling mode, the suction pressure refers to the pressure when the compressor sucks in the refrigerant gas, and the evaporation temperature refers to the temperature when the refrigerant evaporates in the evaporator. When the suction pressure increases, the saturated gas evaporation temperature will also increase accordingly; conversely, when the suction pressure decreases, the saturated gas evaporation temperature will decrease. This feature enables the refrigeration equipment to control the evaporation temperature by adjusting the suction pressure, thereby achieving precise regulation of the ambient temperature.

[0161] For a specific refrigerant, under a certain suction pressure, there is only one specific saturated gas evaporation temperature corresponding to it. By obtaining the mapping relationship between the suction pressure and the evaporation temperature, the magnitude of the evaporation temperature corresponding to the suction pressure can be determined.

[0162] The difference between the suction temperature detected by the suction temperature sensor and the evaporation temperature corresponding to the suction pressure is the actual suction superheat.

[0163] In some embodiments, sub-step S32 specifically includes the following detailed steps:

[0164] determining a second difference between the second target suction air superheat and the actual suction air superheat;

[0165] When the absolute value of the second difference is greater than or equal to a second value, determining a second opening adjustment amount according to the second target suction superheat and the actual suction superheat;

[0166] When the absolute value of the second difference is smaller than the second value, the second opening adjustment amount is determined to be 0.

[0167] Specifically, the opening of the electronic expansion valve is adjusted according to a proportional-integral-derivative controller (PID). The opening adjustment amount of the electronic expansion valve is determined according to the following formula:

[0168] Δu=Kp·(ek-ek-1)+Ki·ek+Kj·(ek-2ek-1+ek-2)

[0169] The first opening adjustment amount and the second opening adjustment amount can both be calculated using the above formulas, which will not be described in detail here.

[0170] Step 105, when the humidity state is the high humidity state and the temperature state is the low temperature state, performing a dehumidification and constant temperature process;

[0171] In an embodiment of the present invention, the step 105 may include: reducing the opening of the electronic expansion valve, reducing the operating frequency of the evaporating fan, and reducing the operating frequency of the compressor;

[0172] By reducing the opening of the electronic expansion valve, reducing the operating frequency of the evaporating fan and reducing the operating frequency of the compressor, the warehouse can be dehumidified while ensuring that the temperature in the warehouse is maintained at a relatively appropriate level.

[0173] In some embodiments, the specific sub-steps of reducing the opening of the electronic expansion valve in step 105 are the same as sub-steps S21 to S23 in step 103 and are not described in detail herein.

[0174] Step 106, when the humidity state is the low humidity state and the temperature state is the low temperature state, performing a moisturizing and constant temperature treatment.

[0175] In the embodiment of the present invention, the step 106 may include: increasing the opening of the electronic expansion valve, increasing the operating frequency of the evaporating fan, and reducing the operating frequency of the compressor.

[0176] By increasing the opening of the electronic expansion valve, increasing the operating frequency of the evaporator fan and reducing the operating frequency of the compressor, the temperature and humidity in the warehouse are maintained at a relatively appropriate level.

[0177] By considering the humidity and temperature conditions, dehumidification and cooling are carried out in high humidity and high temperature conditions; moisture retention and cooling are carried out in low humidity and high temperature conditions; dehumidification and constant temperature are carried out in high humidity and low temperature conditions; moisture retention and constant temperature are carried out in low humidity and low temperature conditions. This allows the warehouse to maintain a good level in both humidity and temperature environments.

[0178] In some embodiments, the specific sub-steps of increasing the opening of the electronic expansion valve in step 106 are the same as sub-steps S31 to S33 in step 104 and are not described in detail herein.

[0179] This method detects the return air humidity and return air temperature through the sensor set on the evaporator, and can obtain a relatively accurate warehouse environment temperature in time. After the refrigeration mode is turned on, the humidity state and temperature state are determined according to the return air humidity and return air temperature, and dehumidification and cooling treatment, moisturizing and cooling treatment, dehumidification and constant temperature treatment, and moisturizing and constant temperature treatment are performed according to the humidity state and temperature state in four different situations. Considering the two dimensions of temperature and humidity at the same time, and fully considering the four possible situations, it can realize accurate control of the warehouse environment and improve the use performance of the warehouse.

[0180] It should be noted that, for the sake of simplicity, the method embodiments are described as a series of action combinations, but those skilled in the art should be aware that the embodiments of the present invention are not limited by the order of the actions described, because according to the embodiments of the present invention, certain steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in the specification are all preferred embodiments, and the actions involved are not necessarily required by the embodiments of the present invention.

[0181] Reference Figure 3 This is a structural block diagram of a warehouse environment control device provided by an embodiment of the present invention, which may specifically include the following modules:

[0182] A detection module 301 is used to obtain the return air humidity and return air temperature detected by a sensor disposed on the evaporator;

[0183] When the refrigeration equipment is powered on, the return air humidity detected by the return air humidity sensor on the evaporator and the return air temperature detected by the return air temperature sensor on the evaporator are received in real time;

[0184] A first state determination module 302 is used to determine the humidity state according to the return air humidity and determine the temperature state according to the return air temperature after the refrigeration device starts the refrigeration mode;

[0185] Specifically, when the refrigeration equipment receives a power-on command, it compares the return air temperature detected in step 101 with the set target warehouse temperature. If the detected return air temperature is greater than the set target warehouse temperature, the warehouse needs to be cooled, and the refrigeration equipment turns on the cooling mode.

[0186] If the detected return air temperature is less than or equal to the set target warehouse temperature, there is no need to cool the warehouse and the refrigeration equipment maintains its original state.

[0187] The first processing module 303 is used to perform dehumidification and cooling processing when the humidity state is a high humidity state and the temperature state is a high temperature state;

[0188] The second processing module 304 is used to perform a moisturizing and cooling process when the humidity state is the low humidity state and the temperature state is the high temperature state;

[0189] The third processing module 305 is used to perform dehumidification and constant temperature processing when the humidity state is the high humidity state and the temperature state is the low temperature state;

[0190] The fourth processing module 306 is used to perform a moisturizing and constant temperature processing when the humidity state is the low humidity state and the temperature state is the low temperature state.

[0191] By considering the humidity and temperature conditions, dehumidification and cooling are carried out in high humidity and high temperature conditions; moisture retention and cooling are carried out in low humidity and high temperature conditions; dehumidification and constant temperature are carried out in high humidity and low temperature conditions; moisture retention and constant temperature are carried out in low humidity and low temperature conditions. This allows the warehouse to maintain a good level in both humidity and temperature environments.

[0192] In some embodiments, the first state determination module 302 includes:

[0193] A second state determination module, configured to determine the high humidity state when the return air humidity is greater than a first preset humidity threshold;

[0194] When the return air humidity is less than the second preset humidity threshold, it is determined to be the low humidity state; the first preset humidity threshold is greater than the second preset humidity threshold;

[0195] When the return air temperature is greater than a first preset temperature threshold, it is determined to be the high temperature state;

[0196] When the return air temperature is lower than the second preset temperature threshold, it is determined to be the low temperature state; and the first preset temperature threshold is higher than the second preset temperature threshold.

[0197] When the return air humidity is greater than the first preset humidity threshold, it is determined to be a high humidity state; when the return air humidity is within the range of the first preset humidity threshold and the second preset humidity threshold, the return air humidity is a medium humidity state; when the return air humidity is less than the second preset humidity threshold, it is determined to be a low humidity state.

[0198] Both high humidity and low humidity environments are not conducive to the long-term storage of goods in the warehouse. Therefore, it is necessary to judge and process the temperature status of the warehouse to keep the humidity in the warehouse within an appropriate range.

[0199] Similarly, when the return air temperature is greater than the first preset temperature threshold, it is determined to be a high temperature state; when the return air temperature is within the range of the first preset temperature threshold and the second preset temperature threshold, the return air temperature is a medium temperature state; when the return air temperature is less than the second preset temperature threshold, it is determined to be a low temperature state.

[0200] Both high and low temperature environments are not conducive to the long-term storage of goods in the warehouse. Therefore, it is necessary to judge and process the temperature status of the warehouse to keep the temperature of the warehouse within an appropriate range.

[0201] In some embodiments, the first preset humidity threshold is the sum of the reference humidity and the humidity control accuracy; the second preset humidity threshold is the difference between the reference humidity and the humidity control accuracy;

[0202] Specifically, a reference humidity is set, and the specific value of the reference humidity can be set according to the optimal storage humidity of the warehouse. At the same time, the humidity control accuracy is set, and the humidity control accuracy is used to control the sensitivity of the refrigeration equipment to changes in the humidity of the warehouse environment.

[0203] The first preset temperature threshold is the sum of the reference temperature and the temperature control accuracy; the second preset humidity threshold is the difference between the reference temperature and the temperature control accuracy.

[0204] Specifically, a reference temperature is set, and the specific value of the reference temperature can be set according to the optimal storage temperature of the warehouse. At the same time, the temperature control accuracy is set, and the temperature control accuracy is used to control the sensitivity of the refrigeration equipment to changes in the warehouse environment temperature.

[0205] In some embodiments, the refrigeration device further comprises: an evaporative fan, an electronic expansion valve, and a compressor;

[0206] In some embodiments, the first processing module 303 includes:

[0207] A dehumidification and cooling processing module, used to reduce the opening of the electronic expansion valve, reduce the operating frequency of the evaporation fan, and increase the operating frequency of the compressor;

[0208] By reducing the opening of the electronic expansion valve, lowering the operating frequency of the evaporating fan and increasing the operating frequency of the compressor, the temperature in the warehouse can be quickly lowered while reducing the humidity in the warehouse.

[0209] In some embodiments, the second processing module 304 includes:

[0210] A moisturizing and cooling processing module, used to increase the opening of the electronic expansion valve, increase the operating frequency of the evaporating fan, and increase the operating frequency of the compressor;

[0211] By increasing the opening of the electronic expansion valve, increasing the operating frequency of the evaporating fan and increasing the operating frequency of the compressor, the temperature in the warehouse can be quickly lowered while ensuring that the humidity in the warehouse is maintained at a relatively appropriate level.

[0212] In some embodiments, the third processing module 305 includes:

[0213] A dehumidification and constant temperature processing module, used to reduce the opening of the electronic expansion valve, reduce the operating frequency of the evaporation fan, and reduce the operating frequency of the compressor;

[0214] By reducing the opening of the electronic expansion valve, reducing the operating frequency of the evaporating fan and reducing the operating frequency of the compressor, the warehouse can be dehumidified while ensuring that the temperature in the warehouse is maintained at a relatively appropriate level.

[0215] In some embodiments, the fourth processing module 306 includes:

[0216] The moisturizing and constant temperature processing module is used to increase the opening of the electronic expansion valve, increase the operating frequency of the evaporating fan, and reduce the operating frequency of the compressor.

[0217] By increasing the opening of the electronic expansion valve, increasing the operating frequency of the evaporator fan and reducing the operating frequency of the compressor, the temperature and humidity in the warehouse are maintained at a relatively appropriate level.

[0218] In some embodiments, the apparatus further comprises:

[0219] A first opening adjustment module, used for obtaining an actual suction superheat and a first target suction superheat;

[0220] determining a first opening adjustment amount according to the first target suction superheat and the actual suction superheat;

[0221] The opening of the electronic expansion valve is reduced according to the first opening adjustment amount.

[0222] Specifically, when the return air humidity is greater than the sum of the reference humidity and the humidity control accuracy, the first target suction superheat is selected and used to determine the opening degree of the electronic expansion valve.

[0223] In some embodiments, the apparatus further comprises:

[0224] A second opening adjustment module is used to obtain an actual suction superheat and a second target suction superheat;

[0225] determining a second opening adjustment amount according to the second target suction superheat and the actual suction superheat;

[0226] The opening of the electronic expansion valve is increased according to the second opening adjustment amount.

[0227] Specifically, when the return air humidity is less than the difference between the reference humidity and the humidity control accuracy, the second target suction superheat is selected and used to determine the opening degree of the electronic expansion valve.

[0228] In some embodiments, the first target suction superheat is less than the second target suction superheat.

[0229] In some embodiments, the refrigeration device further comprises: a suction temperature sensor and a suction pressure sensor;

[0230] In some embodiments, the apparatus further comprises:

[0231] a superheat determination module, used for obtaining the intake air temperature detected by the intake air temperature sensor;

[0232] Acquiring the suction pressure detected by the suction pressure sensor;

[0233] Acquiring a mapping relationship between the suction pressure and the evaporation temperature;

[0234] Determining the evaporation temperature corresponding to the suction pressure according to a mapping relationship between the suction pressure and the evaporation temperature;

[0235] The actual suction air superheat is determined according to the suction air temperature and the evaporation temperature.

[0236] In some embodiments, the apparatus further comprises:

[0237] A first adjustment amount determination module, configured to determine a first difference between the first target intake superheat and the actual intake superheat;

[0238] When the absolute value of the first difference is greater than or equal to a first value, determining a first opening adjustment amount according to the first target intake superheat and the actual intake superheat;

[0239] When the absolute value of the first difference is smaller than the first value, the first opening adjustment amount is determined to be 0.

[0240] In the cooling mode, the suction pressure refers to the pressure when the compressor sucks in the refrigerant gas, and the evaporation temperature refers to the temperature when the refrigerant evaporates in the evaporator. When the suction pressure increases, the saturated gas evaporation temperature will also increase accordingly; conversely, when the suction pressure decreases, the saturated gas evaporation temperature will decrease. This feature enables the refrigeration equipment to control the evaporation temperature by adjusting the suction pressure, thereby achieving precise regulation of the ambient temperature.

[0241] For a specific refrigerant, under a certain suction pressure, there is only one specific saturated gas evaporation temperature corresponding to it. By obtaining the mapping relationship between the suction pressure and the evaporation temperature, the magnitude of the evaporation temperature corresponding to the suction pressure can be determined.

[0242] The difference between the suction temperature detected by the suction temperature sensor and the evaporation temperature corresponding to the suction pressure is the actual suction superheat.

[0243] In some embodiments, determining a first opening adjustment amount according to the first target suction superheat and the actual suction superheat includes:

[0244] determining a first difference between the first target suction air superheat and the actual suction air superheat;

[0245] When the absolute value of the first difference is greater than or equal to a first value, determining a first opening adjustment amount according to the first target intake superheat and the actual intake superheat;

[0246] When the absolute value of the first difference is smaller than the first value, the first opening adjustment amount is determined to be 0.

[0247] Determining the actual suction superheat is an important step in optimizing the operation and troubleshooting of refrigeration equipment. Suction superheat refers to the difference between the actual temperature of the refrigerant at the compressor suction port and its corresponding saturated gas evaporation temperature. This difference reflects the extent to which the refrigerant is above its saturation temperature before entering the compressor, which is crucial to ensure the normal operation of the compressor and improve system efficiency.

[0248] When the absolute value of the difference between the target suction superheat and the actual superheat is less than 1, it means that the suction superheat is controlled with high accuracy and can be stably maintained within a relatively ideal range. This helps to reduce the energy consumption of the compressor, improve the refrigeration efficiency of the system, and also helps to extend the service life of the compressor.

[0249] When the absolute value of the difference between the target suction superheat and the actual superheat is greater than 1, it means that the deviation between the actual superheat and the target superheat is large, and the opening of the electronic expansion valve needs to be adjusted to correct this deviation.

[0250] In some embodiments, the apparatus further comprises:

[0251] a second adjustment amount determination module, configured to determine a second difference between the second target intake superheat and the actual intake superheat;

[0252] When the absolute value of the second difference is greater than or equal to a second value, determining a second opening adjustment amount according to the second target suction superheat and the actual suction superheat;

[0253] When the absolute value of the second difference is smaller than the second value, the second opening adjustment amount is determined to be 0.

[0254] Specifically, the opening of the electronic expansion valve is adjusted according to a proportional-integral-derivative controller (PID). The opening adjustment amount of the electronic expansion valve is determined according to the following formula:

[0255] Δu=K p ·(e k -e k-1 )+K i ·e k +K j ·(e k -2e k-1 +e k-2 )

[0256] Among them, △u represents the control increment of the electronic expansion valve, that is, the opening adjustment amount; K p Represents the proportional coefficient, which is used to determine the influence of the current error on the control increment; K i Indicates the integral coefficient, which is used to eliminate static errors; K j Represents the differential coefficient, which is used to predict future errors based on the changing trend of the error, so as to make adjustments in advance and improve stability;

[0257] e k represents the difference between the target suction superheat degree obtained for the Kth time and the actual suction superheat degree; e k-1 represents the difference between the target suction superheat degree obtained for the K-1th time and the actual suction superheat degree; e k-1 It represents the difference between the target suction superheat and the actual suction superheat obtained at the K-2th time.

[0258] The control increment Δu of the electronic expansion valve is obtained by the above formula, which is used to adjust the opening of the electronic expansion valve, thereby achieving precise control of the refrigerant flow rate.

[0259] It is worth noting that the first opening adjustment amount and the second opening adjustment amount can both be calculated using the above formulas, which will not be described in detail here.

[0260] In addition, the coefficient K in the PID control algorithm p , Ki and K j The need can be determined according to specific control requirements, and the present invention is not limited to this.

[0261] By detecting the return air humidity and return air temperature through the sensor installed on the evaporator, a relatively accurate warehouse environment temperature can be obtained in time. After the refrigeration mode is turned on, the humidity state and temperature state are determined according to the return air humidity and return air temperature, and dehumidification and cooling treatment, moisturizing and cooling treatment, dehumidification and constant temperature treatment, and moisturizing and constant temperature treatment are performed according to the humidity state and temperature state in four different situations. Considering the two dimensions of temperature and humidity at the same time, and fully considering the four possible situations, it can realize accurate control of the warehouse environment and improve the use performance of the warehouse.

[0262] As for the device embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0263] An embodiment of the present invention also provides a refrigeration device, including a processor, a memory, and a computer program stored in the memory and capable of running on the processor. When the computer program is executed by the processor, the various processes of the above-mentioned warehouse environment control method embodiment are implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0264] An embodiment of the present invention also provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the various processes of the above-mentioned warehouse environment control method embodiment are implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0265] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0266] It will be appreciated by those skilled in the art that the embodiments of the present invention may be provided as methods, devices, or computer program products. Therefore, the embodiments of the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the embodiments of the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program codes.

[0267] The embodiments of the present invention are described with reference to the flowcharts and / or block diagrams of the methods, terminal devices (systems), and computer program products according to the embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of the processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing terminal device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing terminal device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0268] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing terminal device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce a manufactured product including an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0269] These computer program instructions can also be loaded onto a computer or other programmable data processing terminal device so that a series of operating steps are executed on the computer or other programmable terminal device to produce a computer-implemented process, thereby providing instructions for executing on the computer or other programmable terminal device to implement the process. Figure 1 A process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0270] Although the preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the embodiments of the present invention.

[0271] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or terminal device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or terminal device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or terminal device including the elements.

[0272] The above is a detailed introduction to the warehouse environment control method, device, refrigeration equipment and medium provided by the present invention. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea; at the same time, for general technical personnel in this field, according to the idea of ​​the present invention, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A warehouse environment control method, characterized in that: The warehouse is provided with a refrigeration device, the refrigeration device includes an evaporator, and the method includes: Acquiring return air humidity and return air temperature detected by a sensor disposed on the evaporator; After the refrigeration device starts a refrigeration mode, determining a humidity state according to the return air humidity, and determining a temperature state according to the return air temperature; When the humidity state is a high humidity state and the temperature state is a high temperature state, performing a dehumidification and cooling process; When the humidity state is a low humidity state and the temperature state is a high temperature state, performing a moisturizing and cooling treatment; When the humidity state is the high humidity state and the temperature state is the low temperature state, performing a dehumidification and constant temperature treatment; When the humidity state is the low humidity state and the temperature state is the low temperature state, a moisturizing and thermostatic treatment is performed.

2. The method according to claim 1, characterized in that The determining of the humidity state according to the return air humidity and the determining of the temperature state according to the return air temperature include: When the return air humidity is greater than a first preset humidity threshold, it is determined to be in the high humidity state; When the return air humidity is less than the second preset humidity threshold, it is determined to be the low humidity state; the first preset humidity threshold is greater than the second preset humidity threshold; When the return air temperature is greater than a first preset temperature threshold, it is determined to be the high temperature state; When the return air temperature is lower than the second preset temperature threshold, it is determined to be the low temperature state; and the first preset temperature threshold is higher than the second preset temperature threshold.

3. The method according to claim 2, characterized in that The first preset humidity threshold is the sum of the reference humidity and the humidity control accuracy; The second preset humidity threshold is the difference between the reference humidity and the humidity control accuracy; The first preset temperature threshold is the sum of the reference temperature and the temperature control accuracy; The second preset humidity threshold is a difference between the reference temperature and the temperature control accuracy.

4. The method according to claim 1, characterized in that: The refrigeration equipment also includes: an evaporating fan, an electronic expansion valve and a compressor; The dehumidification and cooling process comprises: reducing the opening of the electronic expansion valve, reducing the operating frequency of the evaporating fan, and increasing the operating frequency of the compressor; The moisturizing and cooling treatment comprises: Increasing the opening of the electronic expansion valve, increasing the operating frequency of the evaporating fan, and increasing the operating frequency of the compressor; The dehumidification and constant temperature treatment comprises: reducing the opening of the electronic expansion valve, reducing the operating frequency of the evaporating fan, and reducing the operating frequency of the compressor; The moisturizing and constant temperature treatment comprises: The opening of the electronic expansion valve is increased, the operating frequency of the evaporating fan is increased, and the operating frequency of the compressor is reduced.

5. The method according to claim 4, characterized in that The reducing the opening of the electronic expansion valve comprises: Obtaining actual suction superheat and first target suction superheat; determining a first opening adjustment amount according to the first target suction superheat and the actual suction superheat; The opening of the electronic expansion valve is reduced according to the first opening adjustment amount.

6. The method according to claim 4, characterized in that Increasing the opening of the electronic expansion valve includes: Obtaining actual suction superheat and second target suction superheat; determining a second opening adjustment amount according to the second target suction superheat and the actual suction superheat; The opening of the electronic expansion valve is increased according to the second opening adjustment amount.

7. The method according to claim 5, characterized in that The refrigeration equipment further comprises: a suction temperature sensor and a suction pressure sensor; The obtaining of actual suction superheat comprises: Acquiring the intake air temperature detected by the intake air temperature sensor; Acquiring the suction pressure detected by the suction pressure sensor; Acquiring a mapping relationship between the suction pressure and the evaporation temperature; Determining the evaporation temperature corresponding to the suction pressure according to a mapping relationship between the suction pressure and the evaporation temperature; The actual suction air superheat is determined according to the suction air temperature and the evaporation temperature.

8. The method according to claim 5, characterized in that The determining a first opening adjustment amount according to the first target intake superheat and the actual intake superheat comprises: determining a first difference between the first target suction air superheat and the actual suction air superheat; When the absolute value of the first difference is greater than or equal to a first value, determining a first opening adjustment amount according to the first target intake superheat and the actual intake superheat; When the absolute value of the first difference is smaller than the first value, the first opening adjustment amount is determined to be 0.

9. The method according to claim 6, characterized in that The determining the second opening adjustment amount according to the second target suction superheat and the actual suction superheat comprises: determining a second difference between the second target suction air superheat and the actual suction air superheat; When the absolute value of the second difference is greater than or equal to a second value, determining a second opening adjustment amount according to the second target suction superheat and the actual suction superheat; When the absolute value of the second difference is smaller than the second value, the second opening adjustment amount is determined to be 0.

10. An environmental control device for a warehouse, characterized in that: The device comprises: A detection module, used for obtaining the return air humidity and return air temperature detected by a sensor disposed on the evaporator; A first state determination module, configured to determine a humidity state according to the return air humidity and a temperature state according to the return air temperature after the refrigeration device turns on a refrigeration mode; A first processing module, used for performing dehumidification and cooling processing when the humidity state is a high humidity state and the temperature state is a high temperature state; A second processing module is used for performing a moisturizing and cooling process when the humidity state is a low humidity state and the temperature state is a high temperature state; A third processing module is used for performing dehumidification and constant temperature processing when the humidity state is the high humidity state and the temperature state is the low temperature state; The fourth processing module is used for performing moisturizing and constant temperature processing when the humidity state is the low humidity state and the temperature state is the low temperature state.

11. A refrigeration device, characterized in that: include: A processor, a memory, and a computer program stored in the memory and capable of running on the processor, wherein when the computer program is executed by the processor, the steps of the warehouse environment control method as described in any one of claims 1 to 9 are implemented.

12. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the warehouse environment control method as described in any one of claims 1 to 9 are implemented.

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