Temperature and humidity dual-control temperature-adjusting and dehumidifying method and device and storage medium

Abstract

The invention relates to the technical field of heating ventilation air conditioners, and discloses a temperature and humidity dual-control temperature adjusting and dehumidifying method and device and a storage medium, and the method comprises the steps that the current temperature and the current dew point temperature of a target area are obtained, the current temperature and the set temperature are compared, and the current dew point temperature and the set dew point temperature are compared; when the current temperature is larger than the set temperature and the current dew-point temperature is smaller than the set dew-point temperature, the compressor stops running, and the set dew-point temperature subtracts the set temperature adjusting difference value to determine the air supply temperature; according to the air supply temperature, a front-stage water cooler and a rear-stage water cooler are synchronously regulated and controlled, and an electric control fan is gradually heightened until the current temperature reaches the air supply temperature; when the current temperature reaches the air supply temperature, the frequency of the electric control fan is reduced; and when the current temperature is smaller than the set temperature in the set first time period, the electric control fan is gradually turned down, and the front-stage water cooler and the rear-stage water cooler are synchronously regulated and controlled according to the set dew point temperature, so that temperature regulation and dehumidification of temperature and humidity decoupling dual-control are realized, and the uniformity of the humidity field of the high and large-space cool storage is met.

Description

Technical Field

[0001] The present invention relates to the technical field of heating, ventilation and air conditioning, and in particular to a temperature-control and dehumidification method and device and a storage medium for dual temperature and humidity control. Background Art

[0002] In various high-precision fields, all links of production, education and research cannot be separated from the support of micro-environmental control, such as hospitals, biopharmaceuticals, semiconductors, new energy and other fields. With the continuous expansion of the scale of the pharmaceutical distribution industry, the development of the pharmaceutical cold chain has attracted more attention, and the cool warehouse, as a special type of warehouse, plays an important role in the storage of medicines. The design and equipment configuration of the cool warehouse are also relatively complex, and usually require refrigeration equipment and heating systems to control the temperature to ensure that the storage conditions of the medicines meet the standards.

[0003] In the existing technology, a water ring heat pump system is usually used to control the temperature and humidity in a large space cool warehouse. However, the water ring heat pump system has the phenomenon of uneven cooling and heating of some units and some units, which leads to poor energy efficiency and efficiency of the system, and may affect the storage environment of medicines in the large space cool warehouse. Summary of the invention

[0004] The purpose of the present invention is to provide a temperature and humidity dual control temperature control and dehumidification method and equipment, storage medium, so as to achieve temperature and humidity decoupling dual control and efficient temperature control and dehumidification, meet the temperature and humidity field uniformity of large space cool storage, and improve operation energy efficiency and operation efficiency.

[0005] To achieve the above-mentioned purpose, an embodiment of the present application provides a temperature and humidity dual-control temperature and dehumidification method, which is applied to a temperature and dehumidification system, the system comprising: a main circuit, a front-stage water cooler and a rear-stage water cooler; The front-stage water cooler and the rear-stage water cooler are both connected to an external water cooling pipeline, and the main circuit includes a compressor, a first heat exchanger and a second heat exchanger which are connected in sequence to form a circuit; The second heat exchanger is provided with an electric-controlled fan, and from the front-stage water cooler to the rear-stage water cooler, the second heat exchanger, the first heat exchanger and the compressor are sequentially arranged between the front-stage water cooler and the rear-stage water cooler; The method comprises: Obtaining a current temperature and a current dew point temperature of a target area, comparing the current temperature with a set temperature and comparing the current dew point temperature with a set dew point temperature; When the current temperature is greater than the set temperature and the current dew point temperature is less than the set dew point temperature, the compressor is controlled to stop running, and the set temperature difference is subtracted from the set dew point temperature to determine the supply air temperature; According to the supply air temperature, synchronously regulating the front-stage water cooler and the rear-stage water cooler, and gradually increasing the operating frequency of the electric-controlled fan until the current temperature reaches the supply air temperature; When the current temperature reaches the air supply temperature, the electric-controlled fan is controlled to reduce frequency, and it is confirmed whether the current temperature is less than the set temperature within the set first time period; If so, the operating frequency of the electric-controlled fan is gradually lowered, and according to the set dew point temperature, the front-stage water cooler and the rear-stage water cooler are synchronously regulated to operate in ventilation mode.

[0006] Furthermore, a temperature and humidity dual control temperature and dehumidification method also includes: When the current temperature is greater than the set temperature within the set first time period, the compressor is driven to operate; Regulating the front-stage water cooler, the rear-stage water cooler and the electric-controlled fan, and adjusting the operating frequency of the compressor according to the current dew point temperature and the set dew point temperature, until the current temperature is less than the set temperature and the current dew point temperature is less than the set dew point temperature, so as to meet the transition dehumidification condition; When the transition dehumidification condition is met, the electrically controlled fan is controlled to operate at the set dehumidification frequency, and the operating frequency of the compressor is adjusted according to the set minimum air outlet temperature; When the dew point difference between the current dew point temperature and the set dew point temperature is within the set first difference range, the compressor is unloaded and the ventilation mode is operated.

[0007] Further, the front-stage water cooler is provided with a front-stage water regulating valve, and the rear-stage water cooler is provided with a rear-stage water regulating valve; the synchronously regulating the front-stage water cooler and the rear-stage water cooler according to the supply air temperature specifically includes: The outlet air temperature of the air discharged to the target area is detected, and the opening of the front-stage water regulating valve and the opening of the rear-stage water regulating valve are synchronously adjusted using the PID adjustment method so that the outlet air temperature of the air discharged to the target area reaches the supply air temperature.

[0008] Further, the step of gradually lowering the operating frequency of the electric-controlled fan and synchronously regulating the front-stage water cooler and the rear-stage water cooler according to the set dew point temperature specifically includes: When the compressor stops running, the operating frequency of the electric-controlled fan is adjusted according to the set speed reduction step; According to the set dew point temperature, the opening of the front-stage water regulating valve and the opening of the rear-stage water regulating valve are synchronously adjusted using the PID adjustment method.

[0009] Furthermore, a temperature and humidity dual control temperature and dehumidification method also includes: When the ventilation mode is running, the current speed of the electrically controlled fan which is gradually reduced is obtained; When the current rotation speed is the set minimum rotation speed, calculating the temperature difference between the current temperature and the set temperature and the dew point difference between the current dew point temperature and the set dew point temperature; In the set second time period, confirm whether the temperature difference is within the set second difference range and whether the dew point difference is within the set third difference range; If so, the main circuit, the front-stage water cooler and the rear-stage water cooler are controlled to stop running.

[0010] Further, the regulating the front-stage water cooler, the rear-stage water cooler and the electrically controlled fan specifically includes: The electrically controlled fan is controlled to operate at a set rated frequency, the front-stage water cooler is regulated according to a set precooling temperature, and the rear-stage water cooler is regulated according to the current temperature.

[0011] Furthermore, a temperature and humidity dual control temperature and dehumidification method also includes: When the current temperature is lower than the set temperature and the current dew point temperature is higher than the set dew point temperature, controlling the compressor to operate; Control the electrically controlled fan to operate at a set dehumidification frequency, adjust the front-stage water cooler according to the set precooling temperature, and adjust the rear-stage water cooler according to the current temperature; According to the set minimum air outlet temperature, the operating frequency of the compressor is adjusted until the current dew point temperature is lower than the set dew point temperature and the dew point difference is within the set first difference range, then the compressor is unloaded and the ventilation mode is operated.

[0012] Further, the step of gradually increasing the operating frequency of the electrically controlled fan specifically includes: The operating frequency of the electric-controlled fan is adjusted according to the set speed increase step.

[0013] In another aspect of the present invention, there is provided a computer device comprising: a memory storing a computer program; A processor, when executing the computer program, implements the temperature and humidity dual control temperature and dehumidification method as described in one aspect of the present invention.

[0014] In another embodiment of the present invention, a storage medium is provided on which a computer program is stored. When the computer program is executed by a processor, the temperature control and dehumidification method with dual temperature and humidity control as described in one aspect of the present invention is implemented.

[0015] The embodiments of the present application include at least the following beneficial effects: determining the system operation mode by comparing the current temperature with the set temperature and comparing the current dew point temperature with the set dew point temperature; determining the operation temperature control mode when the current temperature is greater than the set temperature and the current dew point temperature is less than the set dew point temperature; adjusting the set dew point temperature to determine the supply air temperature, and regulating the front-stage water cooler and the rear-stage water cooler according to the supply air temperature to meet the dew point air supply; gradually increasing the electric-controlled fan so that the current temperature of the target area reaches the supply air temperature, achieving efficient temperature control and dehumidification with decoupled temperature and humidity dual control, and in the temperature control process, the air outlet temperature is lower than the set dew point The temperature-variable air volume operation achieves the effect of relative humidity being less than the set value, and has the dehumidification capacity, avoiding the evaporation of residual water in the components and the humidification of the air, resulting in a cooling and humidification process; within the set first time period, after determining that the set temperature and the set dew point temperature conditions are met, the air volume is gradually reduced so that the electric control fan can be in a high-efficiency operating characteristic curve, which can better meet the uniformity of temperature and humidity fields and energy-saving efficiency in large spaces, operate in ventilation mode, and improve operating energy efficiency and operating efficiency; when applied to large-space cool storage, it solves the low energy efficiency of the traditional water-ring heat pump system and the uneven cooling and heating phenomenon of the combination of some units for cooling and some for heating. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a flow chart of a temperature and humidity dual control temperature and dehumidification method provided by an embodiment of the present invention; Figure 2 It is a structural schematic diagram of a temperature control and dehumidification system provided by one embodiment of the present invention; Figure 3 It is a structural schematic diagram of a main circuit of a temperature control and dehumidification system provided in one embodiment of the present invention.

[0017] Figure numerals: 100, casing, 110, air inlet, 120, air outlet, 200, main circuit, 210, compressor, 220, first heat exchanger, 230, second heat exchanger, 231, electronically controlled fan, 240, refrigerant heat dissipation pipe, 250, first filter, 260, electronic expansion valve, 270, gas-liquid separator, 280, second filter, 290, oil separator, 291, oil filter, 292, capillary tube, 300, front-stage water cooler, 310, front-stage water regulating valve, 400, rear-stage water cooler, 410, rear-stage water regulating valve, 500, temperature and humidity detection module, 600, first temperature detection module, 700, second temperature detection module, 800, third temperature detection module. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application is further described in detail below in conjunction with the accompanying drawings and examples. It should be understood that the specific embodiments described herein are only used to explain the present application and are not intended to limit the present application. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the embodiments of the present application. They are only examples of devices and methods consistent with some aspects of the embodiments of the present application as detailed in the attached claims.

[0019] It is understood that the terms "first", "second", etc. used in this application can be used in this article to describe various concepts, but unless otherwise specified, these concepts are not limited by these terms. These terms are only used to distinguish one concept from another. Depending on the context, the words "if" and "if" used herein can be interpreted as "when..." or "when...".

[0020] In the description of the present invention, it should be noted that, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific content of the technical solution.

[0021] Reference Figure 2 and Figure 3 In some embodiments of one aspect of the present invention, a temperature and humidity dual control temperature and dehumidification method is applied to a temperature and dehumidification system, which includes: a casing 100, a main circuit 200, a front-stage water cooler 300 and a rear-stage water cooler 400.

[0022] The main circuit 200, the front-stage water cooler 300 and the rear-stage water cooler 400 are all arranged inside the housing 100, and an air inlet 110 is provided at one end of the housing 100, and an air outlet 120 is provided at the other end of the housing 100. The front-stage water cooler 300 is arranged on one side of the air inlet 110, that is, the front-stage water cooler 300 is arranged near the air inlet 110, and the rear-stage water cooler 400 is arranged on one side of the air outlet 120, that is, the rear-stage water cooler 400 is arranged near the air outlet 120. The air inlet 110 can introduce regional wind of the target area.

[0023] The front-stage water cooler 300 is in communication with an external water cooling pipeline, and the front-stage water cooler 300 can perform a primary heat exchange process on the regional wind through the cold water input from the external water cooling pipeline.

[0024] In one embodiment, a front-stage water regulating valve 310 is provided on the front-stage water cooler 300. By adjusting the opening of the front-stage water regulating valve 310, the amount of cold water input to the front-stage water cooler 300 through the external water cooling pipeline is adjusted, thereby adjusting the heat exchange amount of the front-stage water cooler 300 to achieve regulation of the front-stage water cooler 300.

[0025] The rear stage water cooler 400 is connected to the external water cooling pipeline, and the rear stage water cooler 400 can perform the fourth heat exchange process on the regional wind through the cold water input from the external water cooling pipeline. The regional wind after the fourth heat exchange process is sent to the target area through the air outlet 120.

[0026] In one embodiment, a post-stage water regulating valve 410 is provided on the post-stage water cooler 400. By adjusting the opening of the post-stage water regulating valve 410, the amount of cold water input to the post-stage water cooler 400 through the external water cooling pipeline is adjusted, thereby adjusting the heat exchange amount of the post-stage water cooler 400 to achieve regulation of the post-stage water cooler 400.

[0027] The front water cooler 300 and the rear water cooler 400 may both be surface coolers, shell and tube heat exchangers, plate heat exchangers or cooling towers, which are not specifically limited in this embodiment.

[0028] The main circuit 200 includes a compressor 210 , a first heat exchanger 220 , and a second heat exchanger 230 which are sequentially connected to form a circuit.

[0029] The second heat exchanger 230 is provided with an electric-controlled fan 231, and the second heat exchanger 230 is located between the front-stage water cooler 300 and the first heat exchanger 220, the first heat exchanger 220 is located between the compressor 210 and the second heat exchanger 230, and the compressor 210 is located between the first heat exchanger 220 and the rear-stage water cooler 400. In other words, the second heat exchanger 230, the first heat exchanger 220 and the compressor 210 are arranged in sequence in the direction from the front-stage water cooler 300 to the rear-stage water cooler 400.

[0030] The second heat exchanger 230 can perform heat exchange processing on the regional wind again, and the first heat exchanger 220 can perform heat exchange processing on the regional wind for the third time. The regional wind that has undergone the third heat exchange processing flows through the rear-stage water cooler 400.

[0031] The first heat exchanger 220 may be an evaporator, and the second heat exchanger 230 may be a condenser. The present application does not limit the specific types of the first heat exchanger 220 and the second heat exchanger 230 .

[0032] In one embodiment, the regional wind of the target area flows into the interior of the casing 100 through the air inlet 110, flows through the front-stage water cooler 300, the second heat exchanger 230, the first heat exchanger 220 and the rear-stage water cooler 400 in sequence, undergoes multiple heat exchange treatments to perform temperature control and dehumidification, and is finally sent out from the air outlet 120 to the target area.

[0033] The main circuit 200 further includes: a refrigerant heat dissipation pipe 240 , a first filter 250 , an electronic expansion valve 260 , a gas-liquid separator 270 , a second filter 280 , an oil separator 290 , an oil filter 291 and a capillary tube 292 .

[0034] One end of the refrigerant heat dissipation pipe 240 is connected to the first heat exchanger 220, the other end of the refrigerant heat dissipation pipe 240 is connected to one end of the first filter 250, the other end of the first filter 250 is connected to one end of the electronic expansion valve 260, and the other end of the electronic expansion valve 260 is connected to the second heat exchanger 230.

[0035] One end of the gas-liquid separator 270 is connected to the second heat exchanger 230, the other end of the gas-liquid separator 270 is connected to one end of the second filter 280, the other end of the second filter 280 is connected to the return air end of the compressor 210, the exhaust end of the compressor 210 is connected to one end of the oil separator 290, and the other end of the oil separator 290 is connected to the first heat exchanger 220.

[0036] One end of the oil filter 291 is communicated with the oil separator 290 , the other end of the oil filter 291 is communicated with one end of the capillary tube 292 , and the other end of the capillary tube 292 is communicated with one end of the gas-liquid separator 270 .

[0037] The temperature control and dehumidification system further includes: a temperature and humidity detection module 500 , a first temperature detection module 600 , a second temperature detection module 700 and a third temperature detection module 800 .

[0038] The temperature and humidity detection module 500 is arranged at the air inlet 110. Since the air inlet 110 is facing the target area and can introduce the regional wind of the target area, the temperature and humidity detection module 500 can detect the temperature of the regional wind of the current target area and obtain the current temperature of the target area. It can also detect the humidity of the regional wind of the current target area and obtain the current humidity of the target area.

[0039] In one embodiment, the dew point temperature of the regional wind in the current target area can be calculated through the current humidity and the current temperature to obtain the current dew point temperature of the target area.

[0040] The first temperature detection module 600 is disposed between the front-stage water cooler 300 and the second heat exchanger 230 . The first temperature detection module 600 can detect the wind temperature of the regional wind after the initial heat exchange process, that is, detect the outlet air temperature of the front-stage water cooler 300 .

[0041] The second temperature detection module 700 is disposed between the second heat exchanger 230 and the first heat exchanger 220 . The second temperature detection module 700 can detect the wind temperature of the regional wind after the second heat exchange process, that is, detect the outlet air temperature of the second heat exchanger 230 .

[0042] The third temperature detection module 800 is disposed at the air outlet 120 , and the third temperature detection module 800 can detect the outlet temperature of the air discharged to the target area, that is, the regional air after the fourth heat exchange process is sent to the target area.

[0043] Among them, according to the spatial size of the target area of ​​the application (a tall and large space cool storage), several temperature control and dehumidification systems can be set in the target area to achieve cluster control.

[0044] The temperature control and dehumidification system of this application can solve the problem of high energy consumption when dual temperature and humidity control or the inability to dual temperature and humidity control when energy consumption is low, and adapt to the HVAC cluster environmental control of large space cool storage to achieve efficient temperature control and dehumidification with decoupled dual temperature and humidity control. In addition, when the outdoor temperature is lower than the current temperature of the target area and the outdoor dew point is higher than the indoor dew point, that is, when the south is returning to the south, the condensation heat of the built-in direct evaporation system can realize the air conditioning process of dehumidification and heating, replacing the high energy consumption operation of traditional electric reheating.

[0045] Figure 1 This is an optional flow chart of the temperature and humidity dual control temperature and dehumidification method provided in the embodiment of the present application. Figure 1 The method may include but is not limited to steps S100 to S500.

[0046] S100, obtaining the current temperature and the current dew point temperature of the target area, comparing the current temperature with the set temperature and comparing the current dew point temperature with the set dew point temperature.

[0047] S200, when the current temperature is greater than the set temperature and the current dew point temperature is less than the set dew point temperature, the compressor is controlled to stop running, and the set temperature difference is subtracted from the set dew point temperature to determine the supply air temperature.

[0048] S300, according to the supply air temperature, synchronously regulates the front-stage water cooler and the rear-stage water cooler, and gradually increases the operating frequency of the electric control fan until the current temperature reaches the supply air temperature.

[0049] S400, when the current temperature reaches the air supply temperature, the electric control fan is controlled to reduce the frequency, and it is confirmed whether the current temperature is less than the set temperature within the set first time period.

[0050] S500, if yes, then gradually lower the operating frequency of the electric-controlled fan, and synchronously adjust the front-stage water cooler and the rear-stage water cooler according to the set dew point temperature to operate the ventilation mode.

[0051] S100 to S500 shown in the embodiment of the present application determine the system operation mode by comparing the current temperature with the set temperature and the current dew point temperature with the set dew point temperature; when the current temperature is greater than the set temperature and the current dew point temperature is less than the set dew point temperature, determine the operation temperature control mode; adjust the set dew point temperature to determine the supply air temperature, and adjust the front-stage water cooler and the rear-stage water cooler according to the supply air temperature to meet the dew point supply air; by gradually increasing the electric control fan, the current temperature of the target area reaches the supply air temperature, and the temperature and humidity decoupling dual control is realized. Efficient temperature control and dehumidification, and in the temperature control process, the air outlet temperature is lower than the set dew point temperature. The point temperature is operated with variable air volume to obtain the effect that the relative humidity is less than the set value. It has dehumidification capacity and avoids the evaporation of residual water in the components to humidify the air, resulting in a cooling and humidification process; within the set first time period, after determining that the set temperature and the set dew point temperature conditions are met, the air volume is gradually reduced so that the electric control fan can be in a high-efficiency operation characteristic curve, which can better meet the uniformity of temperature and humidity fields and energy-saving efficiency in large spaces, operate in ventilation mode, and improve operating energy efficiency and operating efficiency; when applied to large-space cool warehouses, it solves the low energy efficiency of the traditional water-ring heat pump system and the uneven cooling and heating phenomenon of the combination of some units for cooling and some for heating.

[0052] In S100, the set temperature and the set humidity are set, the set dew point temperature is determined according to the set temperature and the set humidity, the valve opening in the temperature control and dehumidification system is initialized, and the electric control fan is driven to operate.

[0053] Since the air inlet is facing the target area, the temperature and humidity detection module is set at the air inlet, and the current temperature and humidity of the target area are detected by the temperature and humidity detection module, and the current dew point temperature is calculated by the current temperature and current humidity.

[0054] The current temperature is compared with the set temperature, and the current dew point temperature is compared with the set dew point temperature to obtain a comparison result. According to the comparison result, the operation mode of the temperature control dehumidification system is determined to adjust the control strategy according to the temperature and humidity environment of the target area.

[0055] It should be noted that when the comparison result is that the current temperature is lower than the set temperature and the current dew point temperature is higher than the set dew point temperature, the currently running control strategy is determined to be the humidity control mode. When the comparison result is that the current temperature is higher than the set temperature and the current dew point temperature is higher than the set dew point temperature, the currently running control strategy is determined to be the dual control mode. When the comparison result is that the current temperature is lower than the set temperature and the current dew point temperature is lower than the set dew point temperature, the currently running control strategy is determined to be the ventilation mode.

[0056] The set temperature and the set humidity may be set according to the temperature and humidity required by the target area, and in this embodiment, no specific limitation is imposed on the values ​​of the set temperature and the set humidity.

[0057] In the above scheme, by comparing the current temperature with the set temperature, and comparing the current dew point temperature with the set dew point temperature, the system operation mode is determined according to the comparison results. It can effectively target the environmental changes of large-space cool storages, adopt different operation modes, adjust the control strategy, realize temperature and humidity decoupling dual control, and avoid the uneven cooling and heating phenomenon of the combination of some units for cooling and some for heating.

[0058] In S200, according to the comparison result of S100, when the comparison result is that the current temperature is greater than the set temperature and the current dew point temperature is less than the set dew point temperature, the currently running control strategy is determined to be the temperature control mode. That is, when the comparison result is that only the current temperature is greater than the set temperature, the temperature control mode is run.

[0059] In the temperature control mode, the compressor is stopped, and the set dew point temperature is adjusted according to the set temperature adjustment difference to determine the supply air temperature. The supply air temperature is obtained by subtracting the set temperature adjustment difference from the set dew point temperature.

[0060] The temperature adjustment difference value may be set according to actual needs or determined according to a fuzzy algorithm. In this embodiment, no specific limitation is imposed on the value of the temperature adjustment difference value.

[0061] For example, if the set temperature is 18°C ​​and the set humidity is 65%, the set dew point temperature is calculated to be approximately 11.3°C. When the current temperature of 18.5°C is greater than the set temperature of 18°C, and the current dew point temperature of 11°C is less than the set dew point temperature of 11.3°C, the temperature control mode is determined to be operated. In the temperature control mode, the compressor is stopped. If the set temperature adjustment difference is 0.5°C, the supply air temperature is determined to be 10.8°C based on the set temperature adjustment difference.

[0062] In the above scheme, the required air supply temperature is determined by adjusting the set dew point temperature to achieve cooling while satisfying the dew point air supply, and the compressor stops running when the wet load is small.

[0063] In S300, the front-stage water cooler and the rear-stage water cooler are synchronously regulated by the supply air temperature obtained in S200, and the operating frequency of the electric control fan is gradually increased until the current temperature reaches the supply air temperature, so as to achieve cooling while meeting the dew point supply air.

[0064] In one embodiment, the third temperature detection module detects the outlet temperature of the air at the air outlet, that is, the outlet temperature of the air discharged to the target area. Due to the spatial characteristics of the large space, the gas circulation requires a period of time, and there is temperature loss. For the system, there may be a certain temperature difference between the outlet temperature of the air discharged to the target area and the current temperature of the target area. Therefore, the outlet temperature is obtained, and according to the supply air temperature obtained in S200, the opening of the front-stage water regulating valve and the opening of the rear-stage water regulating valve are synchronously adjusted by PID until the outlet temperature also reaches the supply air temperature. When the outlet temperature is lower than the set dew point temperature, the water vapor in the air reaches a saturated state due to the temperature drop and begins to condense, which leads to a reduction in the water vapor content, thereby reducing the relative humidity in the room and achieving cooling and dehumidification.

[0065] In one embodiment, the operating frequency of the electric-controlled fan is adjusted according to the set speed increase step length to increase the speed of the electric-controlled fan until the current temperature of the target area reaches the supply air temperature.

[0066] In the above scheme, the opening of the water regulating valve is synchronously adjusted according to the supply air temperature, and the speed of the electric control fan is gradually increased to achieve temperature and humidity decoupling dual control, meet the dew point air supply while cooling, and avoid uneven hot and cold. In the temperature control process, the air outlet temperature is lower than the set dew point temperature and the variable air volume is operated. This solves the problem that when the outdoor temperature is higher than the room temperature, the maintenance structure and the room sensible heat are coupled as the reheat source to achieve the effect of relative humidity less than the set value without the need for electric reheating. The constant temperature process has dehumidification capabilities, which avoids the phenomenon that residual water in components such as fins and water trays evaporates the humidified air, resulting in a cooling and humidification process.

[0067] In S400, after the current temperature reaches the air supply temperature, the electric-controlled fan is controlled to reduce the frequency to facilitate subsequent mode switching.

[0068] It is determined whether the current temperature is lower than the set temperature and has lasted for the set first time period, so as to determine whether the set temperature and the set dew point temperature conditions are met and there is no temperature fluctuation, thereby avoiding frequent switching of the operating mode.

[0069] In one embodiment, the frequency reduction of the electrically controlled fan can be controlled according to the set frequency reduction amount, or the running fan can be controlled to run at the set frequency reduction speed to achieve the frequency reduction.

[0070] In the above scheme, when it is determined that the current temperature has reached the supply air temperature, the electric control fan is controlled to reduce the frequency to run the temperature control mode to achieve pure cooling and dehumidification. By judging whether the current temperature is still lower than the set temperature within the set first time period, the subsequent mode switching is determined to avoid frequent switching of operating modes due to short-term temperature fluctuations, ensuring that the system adjusts the mode only after the temperature conditions are truly stable.

[0071] In S500, when the current temperature is still lower than the set temperature within the set first time period, the temperature control mode is switched to the ventilation mode. That is, when the current temperature is lower than the set temperature and there is no temperature fluctuation, the ventilation mode is operated.

[0072] In ventilation mode, the compressor remains stopped, and the operating frequency of the electric-controlled fan is lowered in a step-by-step manner. The front-stage water cooler and the rear-stage water cooler are synchronously regulated by the set dew point temperature to further cool and dehumidify.

[0073] In one embodiment, in the ventilation mode, the compressor is still stopped, and the operating frequency of the electric-controlled fan is adjusted according to the set speed reduction step to reduce the speed of the electric-controlled fan until the speed of the electric-controlled fan is adjusted to the minimum speed. According to the set dew point temperature, the opening of the front-stage water regulating valve and the opening of the rear-stage water regulating valve are synchronously adjusted by PID to achieve the regulation of the front-stage water cooler and the rear-stage water cooler.

[0074] In the above scheme, when the current temperature is lower than the set temperature and the current dew point temperature is lower than the set dew point temperature, the current operating control strategy is determined to be the ventilation mode, and the air volume of the electric-controlled fan is gradually reduced according to the constant difference method. The electric-controlled fan can be in a high-efficiency operating characteristic curve, and cooperate with the start-stop control of the group control system to better meet the uniformity of temperature and humidity fields and energy-saving efficiency in large spaces, and also avoid the hydraulic system from losing operating efficiency due to start-stop water pressure shocks.

[0075] In some embodiments of the present application, the temperature and humidity dual control temperature control dehumidification method, the confirmation result of whether the current temperature is less than the set temperature within the set first time period also includes: S600: When the current temperature is greater than the set temperature within the set first time period, the compressor is driven to operate.

[0076] S610, regulating the front-stage water cooler, the rear-stage water cooler and the electric-controlled fan, and adjusting the operating frequency of the compressor according to the current dew point temperature and the set dew point temperature, until the current temperature is lower than the set temperature and the current dew point temperature is lower than the set dew point temperature, so as to meet the transition dehumidification condition.

[0077] S620: When the transition dehumidification conditions are met, the electric-controlled fan is controlled to operate at the set dehumidification frequency, and the operating frequency of the compressor is adjusted according to the set minimum air outlet temperature.

[0078] S630: When the dew point difference between the current dew point temperature and the set dew point temperature is within a set first difference range, the compressor is unloaded and the ventilation mode is operated.

[0079] In S600, the judgment result of the subsequent mode switching in S400 also includes the case where the current temperature is still greater than the set temperature.

[0080] During the set first time period, when the current temperature is still greater than the set temperature, the temperature control mode is switched to the dual control mode to achieve efficient dehumidification and temperature control.

[0081] In the dual control mode, the compressor is driven to run, and the front-stage water cooler and the rear-stage water cooler are also running.

[0082] In S610, in the dual control mode, the front-stage water cooler, the rear-stage water cooler and the electric-controlled fan are regulated, and the operating frequency of the compressor is adjusted according to the current dew point temperature and the set dew point temperature to meet the transitional dehumidification conditions.

[0083] Based on the premise of switching from temperature control mode to dual control mode, the transition dehumidification condition is that the current temperature is lower than the set temperature and the current dew point temperature is lower than the set dew point temperature.

[0084] In one embodiment, in the dual control mode, the compressor is driven to operate, and the front-stage water cooler and the rear-stage water cooler are also operated. The electric-controlled fan is driven to operate at the set rated frequency to regulate the electric-controlled fan. The front-stage water cooler operates according to the set precooling temperature, and the rear-stage water cooler operates according to the current temperature to regulate the front-stage water cooler and the rear-stage water cooler. The compressor operates according to the current dew point temperature and the set dew point temperature until the current temperature is less than the set temperature and the current dew point temperature is less than the set dew point temperature.

[0085] Specifically, in the dual control mode, the electric-controlled fan is driven to operate at the set rated frequency so that the electric-controlled fan operates at the rated speed. The outlet air temperature of the front-stage water cooler is obtained through the first temperature detection module, and the opening of the front-stage water regulating valve is adjusted according to the set pre-cooling temperature so that the outlet air temperature of the front-stage water cooler reaches the set pre-cooling temperature. The current temperature of the target area is obtained through the temperature and humidity detection module, and the opening of the rear-stage water regulating valve is adjusted according to the current temperature so that the current temperature reaches the set temperature. According to the current dew point temperature, the operating frequency of the compressor is adjusted so that the current dew point temperature reaches the set dew point temperature.

[0086] In S620, through the regulation of the dual control mode in S610, it is determined whether the current temperature is lower than the set temperature, and whether the current dew point temperature is lower than the set dew point temperature.

[0087] If yes, it is considered that the transition dehumidification condition is met. When the transition dehumidification condition is met, that is, when the current temperature is lower than the set temperature and the current dew point temperature is lower than the set dew point temperature, the dual control mode is switched to the humidity control mode for transition dehumidification.

[0088] In humidity control mode, the compressor continues to run, and both the front-stage water cooler and the rear-stage water cooler also run.

[0089] Based on the premise of switching from the dual control mode to the humidity control mode, the control strategies of the front-stage water cooler and the rear-stage water cooler remain unchanged, that is, the front-stage water cooler operates according to the set precooling temperature, and the rear-stage water cooler operates according to the current temperature.

[0090] In humidity control mode, the compressor is driven to run, and the front water cooler and the rear water cooler are also running. The electric fan is driven to run at the set dehumidification frequency to regulate the electric fan. The front water cooler runs according to the set precooling temperature, and the rear water cooler runs according to the current temperature to regulate the front water cooler and the rear water cooler. The compressor runs according to the set minimum air outlet temperature until the current dew point temperature is lower than the set dew point temperature by a certain difference.

[0091] In S630, through the control of the humidity control mode in S620, it is determined whether the current dew point temperature is less than the set dew point temperature, and whether the dew point difference between the two is within the set first difference range.

[0092] If so, the compressor is unloaded and the mode is switched from humidity control to ventilation.

[0093] That is to say, when the current dew point temperature is lower than the set dew point temperature and the dew point difference between the two is within the set first difference range, the humidity control mode is switched to the ventilation mode, the compressor stops, and the operating frequency of the electric control fan is lowered in a step-by-step manner. The front-stage water cooler and the rear-stage water cooler are synchronously regulated by the set dew point temperature to further cool and dehumidify.

[0094] Through S600 to S630, when the current temperature of the target area is still greater than the set temperature, it switches to the dual control mode, then switches to the humidity control mode for transitional dehumidification, and finally switches to the ventilation mode. In the internal circulation temperature and humidity control occasions, dehumidification and temperature control correspond to different air volumes respectively, to achieve efficient dehumidification and temperature control. During periods of low wet load, the compressor can be unloaded to improve operating energy efficiency, solve the serious scaling and low energy efficiency problems of traditional water ring heat pump systems, avoid the uneven cooling and heating of some units combined with cooling and some heating, and reduce the high energy consumption solution of low-temperature direct expansion plus electric reheating to achieve cooling and dehumidification.

[0095] In addition, by operating the subsequent water cooler according to the current temperature of the target area, a small part of the sensible heat can be offset, and the free adjustment of the condensation heat can be achieved. At the same time, the return water temperature can be increased to avoid the blind spot of excessive cooling when the equipment is at minimum load, and the frequent starting and stopping of the compressor can cause unstable water temperature.

[0096] In some embodiments of the present application, the ventilation mode of the temperature and humidity dual control temperature and dehumidification method also includes: S700: When the ventilation mode is running, the current speed of the electronically controlled fan that is gradually reduced is obtained.

[0097] S710, when the current rotation speed is the set minimum rotation speed, calculating the temperature difference between the current temperature and the set temperature and the dew point difference between the current dew point temperature and the set dew point temperature.

[0098] S720: Within the set second time period, confirm whether the temperature difference is within the set second difference range and whether the dew point difference is within the third difference range.

[0099] S730: If yes, the main circuit, the front-stage water cooler and the rear-stage water cooler are controlled to stop running.

[0100] In S700, when the ventilation mode is running, the operating frequency of the electric-controlled fan is gradually reduced until the speed of the electric-controlled fan is adjusted to the minimum speed, and then the current speed of the electric-controlled fan is detected to determine whether the electric-controlled fan is running at the minimum speed.

[0101] In S710, when the electric-controlled fan runs at the lowest speed, that is, the current speed is the set minimum speed, the temperature difference between the current temperature and the set temperature is calculated, and the dew point difference between the current dew point temperature and the set dew point temperature is also calculated.

[0102] In S720, it is determined whether the temperature difference is within the second difference range and whether the dew point difference is within the third difference range, and this state continues for a set second time period.

[0103] That is to say, when the electric control fan runs at the set minimum speed, the current temperature and the current dew point temperature are detected to be lower than the set value by a large difference and last for a certain period of time to confirm whether the current temperature and humidity environment of the large space cool storage meets the set temperature and humidity conditions and is in a steady state.

[0104] In S730, when the temperature difference is within the second difference range and the dew point difference is within the third difference range, and this state lasts for the set second time period, the main circuit, the front-stage water cooler and the rear-stage water cooler are stopped.

[0105] That is to say, when the current temperature and the current dew point temperature of the target area are both lower than the set value by a large difference and last for a certain period of time, the temperature control dehumidification system is controlled to stop running.

[0106] Through S710 to S730, start-stop control is used to ensure uniformity of temperature and humidity fields in large spaces, improve energy efficiency, reduce operating efficiency due to start-stop water pressure shocks in hydraulic pipelines, avoid unstable water temperature caused by frequent start-stop of compressors, and enable unloading operation during periods of low load.

[0107] In some embodiments of the present application, the temperature and humidity dual control temperature and dehumidification method also includes: S800: When the current temperature is lower than the set temperature and the current dew point temperature is higher than the set dew point temperature, the compressor is controlled to operate.

[0108] S810, controlling the electric control fan to operate at the set dehumidification frequency, adjusting the front-stage water cooler according to the set precooling temperature, and adjusting the rear-stage water cooler according to the current temperature.

[0109] S820, adjusting the operating frequency of the compressor according to the set minimum air outlet temperature until the current dew point temperature is lower than the set dew point temperature and the dew point difference is within the set first difference range, then unloading the compressor and operating the ventilation mode.

[0110] In S800, when the comparison result is that the current temperature is lower than the set temperature and the current dew point temperature is higher than the set dew point temperature, it is determined that the currently running control strategy is the humidity control mode, and the humidity of the target area is high. That is, when the comparison result is that only the current dew point temperature is higher than the set dew point temperature, the humidity control mode is run.

[0111] In humidity control mode, the compressor is driven to run, and the front-stage water cooler and the rear-stage water cooler are also operated to dehumidify the target area.

[0112] In S810, the electric-controlled fan is driven to operate according to the set dehumidification frequency, the front-stage water cooler operates according to the set precooling temperature, and the rear-stage water cooler operates according to the current temperature.

[0113] In one embodiment, in the humidity control mode, the electric-controlled fan is driven to operate at the set dehumidification frequency so that the electric-controlled fan operates at the set dehumidification speed. The outlet air temperature of the front-stage water cooler is obtained through the first temperature detection module, and the opening of the front-stage water regulating valve is adjusted according to the set precooling temperature so that the outlet air temperature of the front-stage water cooler reaches the set precooling temperature. The current temperature of the target area is obtained through the temperature and humidity detection module, and the opening of the rear-stage water regulating valve is adjusted according to the current temperature so that the current temperature reaches the set temperature.

[0114] In S820, the operating frequency of the compressor is adjusted according to the set minimum air outlet temperature until the current dew point temperature is lower than the set dew point temperature and the dew point difference between the two is within the set first difference range, then the compressor is unloaded and the ventilation mode is operated.

[0115] That is, it is determined whether the current dew point temperature is less than the set dew point temperature, and whether the dew point difference between the two is within the set first difference range. If so, the compressor is unloaded and the humidity control mode is switched to the ventilation mode.

[0116] That is to say, when the current dew point temperature is lower than the set dew point temperature and the dew point difference between the two is within the set first difference range, the humidity control mode is switched to the ventilation mode, the compressor stops, and the operating frequency of the electric control fan is lowered in a step-by-step manner. The front-stage water cooler and the rear-stage water cooler are synchronously regulated by the set dew point temperature to further cool and dehumidify.

[0117] Through S800 to S820, the rear-stage water cooler can also realize the free adjustment of condensation heat when offsetting a small part of sensible heat according to the current temperature, and at the same time increase the return water temperature, avoiding the blind spot of regulation when the system is at minimum load but still has excessive cooling under this condition, and the frequent start and stop of the compressor leads to unstable water temperature. In addition, when the outdoor temperature is lower than the current temperature of the target area and the outdoor dew point is higher than the indoor dew point (the south is returning to the south), the condensation heat of the built-in direct evaporation system can realize the air conditioning process of dehumidification and heating, replacing the high energy consumption operation of traditional electric reheating.

[0118] Among them, according to the spatial size of the target area of ​​application (high and large space cool storage), several temperature control and dehumidification systems can be set in the target area, and the above temperature control and dehumidification method can be used to achieve cluster control. Using this principle, the combination of some units in the cluster system using dual cold source belt compressors and some units using pure cooling terminal forms are all within the scope of protection of this patent.

[0119] According to an embodiment of another aspect of the present invention, a computer device is provided.

[0120] The computer device includes a processor, a memory and a database connected through a system bus. The processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program and a database. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. When the computer program is executed by the processor, the temperature and humidity dual control method of temperature and dehumidification is realized on the one hand.

[0121] The memory and the processor components are electrically connected to each other directly or indirectly to achieve data transmission or interaction. For example, these components can be electrically connected to each other through one or more communication buses or signal lines. The processor includes at least one software function module that can be stored in the memory in the form of software or firmware or solidified in the operating system (OS) of the server. The processor is used to execute the executable module stored in the memory.

[0122] The memory may be a random access memory (RAM), a read only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable read-only memory (EEPROM), etc. The memory is used to store programs and voice data, and the processor executes the program after receiving the execution instruction.

[0123] The processor may be an integrated circuit chip with signal processing capabilities. The above-mentioned processor may be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc.; it may also be a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components. The methods, steps and logic block diagrams disclosed in the embodiments of the present invention may be implemented or executed. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc.

[0124] The processor couples various input / output devices to the processor and the memory. In some embodiments, the processor and the memory can be implemented in a single chip. In some other examples, they can be implemented by separate chips respectively.

[0125] The peripheral interface couples various input / output devices to the processor and the memory. In some embodiments, the peripheral interface, the processor and the memory can be implemented in a single chip. In some other examples, they can be implemented by separate chips respectively.

[0126] According to another aspect of the present invention, a computer storage medium is provided, wherein a computer program is stored in the computer storage medium, and the computer storage medium may be a magnetic random access memory, a read-only memory, a programmable read-only memory, an erasable programmable read-only memory, an electrically erasable programmable read-only memory, a flash memory, a magnetic surface memory, an optical disk, or a read-only optical disk, etc.; or may be various devices including one or any combination of the above memories, such as a mobile phone, a computer, a tablet device, a personal digital assistant, etc. When the computer program is executed by a processor, the temperature and humidity dual control temperature and dehumidification method of one aspect is implemented.

[0127] A person skilled in the art may implement the present invention in a variety of variations without departing from the scope and essence of the present invention, such as using a feature of one embodiment to obtain another embodiment. The preferred embodiments of the embodiments of the present disclosure are described above with reference to the accompanying drawings, but the scope of rights of the embodiments of the present disclosure is not limited thereby. Any modification, equivalent substitution and improvement made by a person skilled in the art without departing from the scope and essence of the embodiments of the present disclosure shall be within the scope of rights of the embodiments of the present disclosure.

Claims

1. A temperature and humidity dual control temperature and dehumidification method, characterized in that: Applicable to a temperature control and dehumidification system, the system comprising: a main circuit, a front-stage water cooler and a rear-stage water cooler; The front-stage water cooler and the rear-stage water cooler are both connected to an external water cooling pipeline, and the main circuit includes a compressor, a first heat exchanger and a second heat exchanger which are connected in sequence to form a circuit; The second heat exchanger is provided with an electric-controlled fan, and from the front-stage water cooler to the rear-stage water cooler, the second heat exchanger, the first heat exchanger and the compressor are sequentially arranged between the front-stage water cooler and the rear-stage water cooler; The method comprises: Obtaining a current temperature and a current dew point temperature of a target area, comparing the current temperature with a set temperature and comparing the current dew point temperature with a set dew point temperature; When the current temperature is greater than the set temperature and the current dew point temperature is less than the set dew point temperature, the compressor is controlled to stop running, and the set temperature difference is subtracted from the set dew point temperature to determine the supply air temperature; According to the supply air temperature, synchronously regulating the front-stage water cooler and the rear-stage water cooler, and gradually increasing the operating frequency of the electric-controlled fan until the current temperature reaches the supply air temperature; When the current temperature reaches the air supply temperature, the electric-controlled fan is controlled to reduce frequency, and it is confirmed whether the current temperature is less than the set temperature within the set first time period; If so, the operating frequency of the electric-controlled fan is gradually lowered, and according to the set dew point temperature, the front-stage water cooler and the rear-stage water cooler are synchronously regulated to operate in ventilation mode.

2. A temperature and humidity dual control temperature and dehumidification method according to claim 1, characterized in that: The method further comprises: When the current temperature is greater than the set temperature within the set first time period, the compressor is driven to operate; Regulating the front-stage water cooler, the rear-stage water cooler and the electric-controlled fan, and adjusting the operating frequency of the compressor according to the current dew point temperature and the set dew point temperature, until the current temperature is less than the set temperature and the current dew point temperature is less than the set dew point temperature, so as to meet the transition dehumidification condition; When the transition dehumidification condition is met, the electrically controlled fan is controlled to operate at the set dehumidification frequency, and the operating frequency of the compressor is adjusted according to the set minimum air outlet temperature; When the dew point difference between the current dew point temperature and the set dew point temperature is within the set first difference range, the compressor is unloaded and the ventilation mode is operated.

3. A temperature and humidity dual control temperature and dehumidification method according to claim 1, characterized in that: The front-stage water cooler is provided with a front-stage water regulating valve, and the rear-stage water cooler is provided with a rear-stage water regulating valve; the synchronously regulating the front-stage water cooler and the rear-stage water cooler according to the supply air temperature specifically includes: The outlet air temperature of the air discharged to the target area is detected, and the opening of the front-stage water regulating valve and the opening of the rear-stage water regulating valve are synchronously adjusted using the PID adjustment method so that the outlet air temperature of the air discharged to the target area reaches the supply air temperature.

4. A temperature and humidity dual control temperature and dehumidification method according to claim 3, characterized in that: The step of gradually lowering the operating frequency of the electric-controlled fan and synchronously regulating the front-stage water cooler and the rear-stage water cooler according to the set dew point temperature specifically includes: When the compressor stops running, the operating frequency of the electric-controlled fan is adjusted according to the set speed reduction step; According to the set dew point temperature, the opening of the front-stage water regulating valve and the opening of the rear-stage water regulating valve are synchronously adjusted using the PID adjustment method.

5. The temperature and humidity dual control temperature and dehumidification method according to claim 1, characterized in that: Also includes: When the ventilation mode is running, the current speed of the electrically controlled fan which is gradually reduced is obtained; When the current rotation speed is the set minimum rotation speed, calculating the temperature difference between the current temperature and the set temperature and the dew point difference between the current dew point temperature and the set dew point temperature; In the set second time period, confirm whether the temperature difference is within the set second difference range and whether the dew point difference is within the set third difference range; If so, the main circuit, the front-stage water cooler and the rear-stage water cooler are controlled to stop running.

6. A temperature and humidity dual control temperature and dehumidification method according to claim 2, characterized in that: The regulating and controlling the front-stage water cooler, the rear-stage water cooler and the electrically controlled fan specifically includes: The electrically controlled fan is controlled to operate at a set rated frequency, the front-stage water cooler is regulated according to a set precooling temperature, and the rear-stage water cooler is regulated according to the current temperature.

7. A temperature and humidity dual control temperature and dehumidification method according to claim 2, characterized in that: The method further comprises: When the current temperature is lower than the set temperature and the current dew point temperature is higher than the set dew point temperature, controlling the compressor to operate; Control the electrically controlled fan to operate at a set dehumidification frequency, adjust the front-stage water cooler according to the set precooling temperature, and adjust the rear-stage water cooler according to the current temperature; According to the set minimum air outlet temperature, the operating frequency of the compressor is adjusted until the current dew point temperature is lower than the set dew point temperature and the dew point difference is within the set first difference range, then the compressor is unloaded and the ventilation mode is operated.

8. The temperature and humidity dual control temperature and dehumidification method according to claim 1, characterized in that: The step of gradually increasing the operating frequency of the electric-controlled fan specifically includes: The operating frequency of the electric-controlled fan is adjusted according to the set speed increase step.

9. A computer device, characterized in that: include: a memory storing a computer program; A processor, wherein when executing the computer program, the processor implements the temperature control and dehumidification method for dual temperature and humidity control as described in any one of claims 1 to 8.

10. A storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the temperature control and dehumidification method for dual temperature and humidity control as described in any one of claims 1 to 8 is implemented.

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