Condensation heat variable distribution proportion adjusting method and equipment for cascade dehumidification and medium

Abstract

The invention relates to the technical field of heating ventilation air conditioners, and discloses a cascade dehumidification condensation heat variable distribution proportion adjusting method and device and a medium, and the method comprises the steps that when it is confirmed that a dehumidification mode is operated, whether a variable distribution proportion strategy is executed or not is judged according to the fresh air enthalpy value and the fresh air temperature; if yes, the heat exchange temperature is dynamically adjusted, and primary heat exchange is conducted according to the adjusted heat exchange temperature; when the current air supply temperature is smaller than the set air supply temperature, the current heat exchange temperature is determined; when the heat recovery rate is within the set full input range and the first air temperature reaches the set temperature value, the input percentage of a compressor is detected; and when the input percentage is smaller than or equal to the set input value, the auxiliary heater is switched out, the set temperature needing to be changed is superposed with the current heat exchange temperature to obtain a regulation and control temperature, primary heat exchange is conducted according to the regulation and control temperature, and operation is conducted for the set operation time. The investment of an auxiliary heater is further reduced, the reliability of the dehumidification system is improved, and the operation energy consumption of the whole machine is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of HVAC, and in particular to a method, device and medium for adjusting the condensation heat demand variable distribution ratio of step dehumidification. Background Art

[0002] In various fields of high-tech, production, education and research cannot be separated from the support of clean environmental control. For example, environmental control in hospitals, biopharmaceuticals, semiconductors and new energy fields cannot be separated from constant temperature and humidity microenvironment. In some occasions, when it is impossible to use temperature and humidity separate control without reheating to solve the constant temperature and humidity, the reheating energy consumption accounts for a large part of the energy consumption of the whole machine operation. For example, when the hospital operating department uses temperature and humidity joint control and temperature and humidity separate control, the reheating energy consumption of the temperature and humidity joint control solution will account for about 40% of the total energy consumption of the system, and the energy consumption is amazing during long-term operation.

[0003] In units with a large fresh air ratio or fresh air, the traditional control condensing reheating of the dual-cold source direct expansion system during the transition season is still insufficient. At this time, the electric auxiliary heating investment still exists, and the condensation heat of the direct expansion system cannot be well released, and the energy consumption of the whole machine is still high. Summary of the invention

[0004] The main purpose of the embodiments of the present application is to propose a method, equipment and medium for adjusting the condensation heat demand distribution ratio of step dehumidification, so as to solve the problem that the existing dehumidification air-conditioning system is still insufficient in full investment in condensation heat recovery during the transition season, further reduce the investment in auxiliary heat devices, improve the reliability of the dehumidification system, and reduce the energy consumption of the whole machine.

[0005] To achieve the above-mentioned purpose, one aspect of an embodiment of the present application provides a method for adjusting the condensation heat demand variable distribution ratio of step dehumidification, which is applied to a dehumidification system, the system comprising: an indoor casing, a compressor, a first heat exchanger, a second heat exchanger and an auxiliary heat exchanger; The first heat exchanger and the second heat exchanger are installed inside the indoor casing, the compressor is located outside the indoor casing, the second heat exchanger is connected to the compressor, and the second heat exchanger is used to perform a second heat exchange process on the fresh air after the initial heat exchange process; The method comprises: When the dehumidification mode is confirmed, the fresh air enthalpy value and the fresh air temperature are obtained, and according to the fresh air enthalpy value and the fresh air temperature, it is determined whether a variable distribution ratio strategy needs to be executed; If so, dynamically adjusting the heat exchange temperature of the first heat exchanger, and controlling the first heat exchanger to perform initial heat exchange processing on the fresh air according to the adjusted heat exchange temperature; Detecting the current supply air temperature, and when the current supply air temperature is less than the set supply air temperature, determining the current heat exchange temperature, detecting the heat recovery rate of the dehumidification system and the first air temperature after the second heat exchange process; When the heat recovery rate is within the set full input range and the first wind temperature reaches the set temperature value, detecting the input percentage of the compressor; When the input percentage is less than or equal to the set input value, the auxiliary heat device is cut out first, and the set temperature to be changed is superimposed on the current heat exchange temperature to obtain the control temperature, and the first heat exchanger is controlled to perform the initial heat exchange treatment according to the control temperature to maintain the set operating time.

[0006] Furthermore, the method for adjusting the distribution ratio of condensation heat demand for step dehumidification also includes: When the input percentage is greater than the set input value, the first heat exchanger is controlled to maintain the current heat exchange temperature to perform initial heat exchange processing on the fresh air; The auxiliary heater is put into the dehumidification system to run the dehumidification mode.

[0007] Further, judging whether it is necessary to execute the variable distribution ratio strategy according to the fresh air enthalpy value and the fresh air temperature specifically includes: Determine whether the fresh air enthalpy value is less than the set enthalpy value and whether the fresh air temperature is less than the set fresh air temperature; If so, it is considered necessary to implement a variable allocation ratio strategy.

[0008] Further, the first heat exchanger is provided with a refrigerant regulating valve, and the dynamically adjusting the heat exchange temperature of the first heat exchanger and controlling the first heat exchanger to perform the initial heat exchange processing on the fresh air according to the adjusted heat exchange temperature specifically includes: Adjusting the heat exchange temperature according to the set temperature step; According to the adjusted heat exchange temperature, the opening of the refrigerant regulating valve is adjusted, and the first heat exchanger is controlled to perform initial heat exchange processing on the fresh air so that the second air temperature after the initial heat exchange processing reaches the adjusted heat exchange temperature.

[0009] Further, the detecting of the heat recovery rate of the dehumidification system specifically includes: The outdoor heat rejection and the indoor heat rejection of the dehumidification system are detected, and the heat recovery rate is calculated according to the outdoor heat rejection and the indoor heat rejection.

[0010] Further, the step of confirming to run the dehumidification mode specifically includes: Acquire fresh air humidity, and calculate the fresh air enthalpy value and fresh air dew point according to the fresh air temperature and the fresh air humidity; When the fresh air dew point is greater than the set dew point, the dehumidification mode is confirmed to be running.

[0011] Furthermore, the method for adjusting the distribution ratio of condensation heat demand for step dehumidification also includes: When it is confirmed that there is no need to execute the variable distribution ratio strategy, the first heat exchanger is controlled to perform initial heat exchange processing on the fresh air according to the set heat exchange temperature.

[0012] Furthermore, the method for adjusting the distribution ratio of condensation heat demand for step dehumidification also includes: When the current supply air temperature is lower than the set supply air temperature and the heat recovery rate is lower than the set minimum threshold value of the full input range, controlling the first heat exchanger to perform initial heat exchange processing on the fresh air according to the set heat exchange temperature; Return and re-detect the current supply air temperature until the heat recovery rate is within the set full input range.

[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 method for adjusting the condensation heat demand distribution ratio of the step dehumidification as described in one aspect of the present invention.

[0014] In yet another aspect 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 method for adjusting the condensation heat demand distribution ratio of the step dehumidification as described in one aspect of the present invention is implemented.

[0015] The beneficial effects of the present invention are as follows: through the fresh air enthalpy value and the fresh air temperature, it is judged whether it is necessary to execute the variable allocation ratio strategy to prevent misjudgment, dynamically adjust the heat exchange temperature of the first heat exchanger, and make the first heat exchanger operate in a variable temperature mode, and sequentially detect and judge the current supply air temperature, heat recovery rate, the first air temperature of the second heat exchange treatment and the input percentage of the compressor to determine the heat recovery input condition and the current heat exchange temperature. When it is determined that the input percentage of the compressor is less than or equal to the set input value, the auxiliary heat device is preferentially cut out, and the set temperature to be changed is superimposed on the currently adjusted heat exchange temperature to obtain the control temperature, so as to execute the variable allocation ratio operation strategy, and solve the existing dehumidification The problem that the air-conditioning system is still insufficient in full investment in condensation heat recovery during the transition season is solved. The investment in auxiliary heat devices is further reduced, the condensation heat of the direct expansion pipeline is better released, the reliability of the dehumidification system is improved, and the energy consumption of the whole machine is reduced. The problem of high energy consumption caused by the constant temperature and humidity heat offset heat source of the existing dehumidification unit using electric reheating, steam reheating or hot water reheating is solved; the problem that in the existing dual-cold source dehumidification system, when the direct expansion pipeline with condensation heat recovery function and the pre-cooling of the first heat exchanger are controlled according to a fixed heat exchange temperature, the fresh air will be pre-cooled and run in a dry condition at high temperature and low humidity, resulting in too small dehumidification cooling capacity of the second heat exchanger, and thus insufficient condensation heat is solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1It is a flow chart of a method for adjusting the distribution ratio of condensation heat demand for step dehumidification provided by one embodiment of the present invention; Figure 2 It is a structural schematic diagram of a dehumidification system provided by one embodiment of the present invention.

[0017] Figure numerals: 100, indoor casing, 101, fresh air valve, 102, air outlet, 110, first heat exchanger, 111, refrigerant regulating valve, 120, second heat exchanger, 130, third heat exchanger, 200, compressor, 300, four-way valve, 400, outdoor heat exchanger, 500, oil separator, 600, gas-liquid separator, 700, temperature and humidity detector, 710, first temperature detector, 720, second temperature detector, 730, third temperature detector. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and cannot be understood as limiting the present invention.

[0019] It should be noted that although the system diagram is divided into functional modules, in some cases, the steps shown or described may be executed in a sequence different from the module division in the system or the sequence in the flowchart.

[0020] It is understood that the terms "first", "second", etc. used in this application can be used to describe various concepts in this article, but unless otherwise specified, these concepts are not limited by these terms. These terms are only used to distinguish one concept from another concept. For example, without departing from the scope of the embodiment of the present application, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the words "if" and "if" as used herein can be interpreted as "at the time of" or "when" or "in response to determination".

[0021] 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.

[0022] In order to make the inventive concept of the present application easy to understand, before describing the embodiments of the present application in detail, the English abbreviations (terms) / related concepts involved in the embodiments of the present application are first described. The English abbreviations (terms) / related concepts involved in the embodiments of the present application are subject to the following explanations.

[0023] Transition season: usually refers to the two time periods of spring and autumn in a year, which are the transition period between winter and summer. During this period, the temperature and humidity of the transition season are usually unstable, and the climate changes frequently.

[0024] As described in the background technology, in units with a large fresh air ratio or fresh air, the traditional control condensation reheat full investment of the dual-cold source direct expansion system in the transition season is still insufficient. At this time, the electric auxiliary heating investment still exists, and the condensation heat of the direct expansion system cannot be well released, and the energy consumption of the whole machine is still high.

[0025] Based on this, an embodiment of the present invention proposes a method for adjusting the condensation heat demand distribution ratio of step dehumidification to solve the problem that the existing dehumidification air-conditioning system is still insufficient in full investment in condensation heat recovery during the transition season, further reduce the investment in auxiliary heat, improve the reliability of the dehumidification system, and reduce the energy consumption of the entire machine.

[0026] Reference Figure 2 In one aspect of the present invention, a condensation heat demand variable distribution ratio adjustment method for step dehumidification is applied to a dehumidification system, which includes: an indoor casing 100, a first heat exchanger 110, a second heat exchanger 120, a compressor 200 and an auxiliary heat device.

[0027] The first heat exchanger 110 and the second heat exchanger 120 are both disposed inside the indoor casing 100 , and the compressor 200 is disposed outside the indoor casing 100 .

[0028] The auxiliary heater may be disposed inside the indoor casing 100 to cut out the auxiliary heater from the dehumidification system or to put the auxiliary heater into the dehumidification system.

[0029] The indoor housing 100 is provided with a fresh air valve 101 and an air outlet 102. The fresh air valve 101 can introduce fresh air into the interior of the indoor housing 100, one side of the first heat exchanger 110 is close to the fresh air valve 101, the second heat exchanger 120 is located on the other side of the first heat exchanger 110, the first heat exchanger 110 is connected to an external refrigerant pipeline, the second heat exchanger 120 is connected to the compressor 200, and the air outlet 102 can send out the fresh air processed by the dehumidification system.

[0030] The first heat exchanger 110 can perform a primary heat exchange process on the fresh air, and the second heat exchanger 120 can perform a secondary heat exchange process on the fresh air after the primary heat exchange process.

[0031] The first heat exchanger 110 is provided with a refrigerant regulating valve 111, and the first heat exchanger 110 is connected to an external refrigerant pipeline via the refrigerant regulating valve 111. The first heat exchanger 110 may be a surface cooler, the second heat exchanger 120 may be an evaporator, and the third heat exchanger 130 may be a condenser.

[0032] The dehumidification system further includes: a third heat exchanger 130 , a four-way valve 300 , an outdoor heat exchanger 400 , an oil separator 500 , a gas-liquid separator 600 , a temperature and humidity detector 700 , a first temperature detector 710 , a second temperature detector 720 and a third temperature detector 730 .

[0033] The third heat exchanger 130 is disposed inside the indoor casing 100, one side of the third heat exchanger 130 is close to the air outlet 102, and the second heat exchanger 120 is located at the other side of the third heat exchanger 130. That is, the second heat exchanger 120 is located between the third heat exchanger 130 and the first heat exchanger 110.

[0034] The compressor 200 , the four-way valve 300 , the outdoor heat exchanger 400 , the oil separator 500 and the gas-liquid separator 600 form a direct expansion pipeline, and are all arranged outside the indoor casing 100 .

[0035] The exhaust end of the compressor 200 is connected to the first end of the four-way valve 300 through the oil separator 500, the second end of the four-way valve 300 is connected to the outdoor heat exchanger 400, the return air end of the compressor 200 is connected to the third end of the four-way valve 300 through the gas-liquid separator 600, the outdoor heat exchanger 400 is connected to the third heat exchanger 130 inside the indoor casing 100, the third heat exchanger 130 is connected to the second heat exchanger 120, and the second heat exchanger 120 is connected to the fourth end of the four-way valve 300. The four-way valve 300 is used to connect the second heat exchanger 120 to the compressor 200.

[0036] Among them, the outdoor heat exchanger 400 can be formed by connecting two condensers in parallel to solve the problem that the refrigerant migration cannot achieve full heat recovery, resulting in a large amount of auxiliary heat input and a low performance coefficient of the refrigeration system during full heat recovery.

[0037] The temperature and humidity detector 700 is disposed on the fresh air valve 101, the first temperature detector 710 is located on the other side of the first heat exchanger 110, the second temperature detector 720 is located on the other side of the third heat exchanger 130, and the third temperature detector 730 is disposed at the air outlet 102. In other words, the first temperature detector 710 is disposed between the first heat exchanger 110 and the second heat exchanger 120, and the second temperature detector 720 is disposed between the second heat exchanger 120 and the third heat exchanger 130.

[0038] The third heat exchanger 130 can perform a third heat exchange on the fresh air that has undergone the second heat exchange treatment, and the air outlet 102 delivers the fresh air that has undergone the third heat exchange treatment to achieve delivery of the fresh air that has been processed by the dehumidification system.

[0039] The temperature and humidity detector 700 is used to detect the fresh air temperature and fresh air humidity, the first temperature detector 710 is used to detect the second air temperature after the initial heat exchange treatment, the second temperature detector 720 is used to detect the first air temperature after the second heat exchange treatment, and the third temperature detector 730 is used to detect the current supply air temperature delivered by the air outlet 102.

[0040] Specifically, the fresh air valve 101 introduces fresh air into the interior of the indoor casing 100, and the temperature and humidity detector 700 detects the fresh air temperature and fresh air humidity. The fresh air flows through the first heat exchanger 110, and the refrigerant passes through the external refrigerant pipeline. The first heat exchanger 110 performs a primary heat exchange process on the fresh air, and the first temperature detector 710 detects the second air temperature. The fresh air that has undergone the primary heat exchange process flows through the second heat exchanger 120, and the refrigerant processed by the compressor 200 is output through the direct expansion pipeline. The second heat exchanger 120 performs a secondary heat exchange process on the fresh air that has undergone the primary heat exchange process, and the second temperature detector 720 detects the first air temperature. The fresh air that has undergone the secondary heat exchange process flows through the third heat exchanger, and the third heat exchanger 130 performs a third heat exchange process on the fresh air that has undergone the secondary heat exchange process, and finally delivers it through the air outlet 102. The third temperature detector 730 detects the current air supply temperature delivered by the air outlet 102.

[0041] Reference Figure 1 In some embodiments of one aspect of the present invention, a method for adjusting the condensation heat demand distribution ratio of step dehumidification includes the following steps: S100, when it is confirmed to run the dehumidification mode, obtain the fresh air enthalpy value and the fresh air temperature, and determine whether it is necessary to execute the variable allocation ratio strategy according to the fresh air enthalpy value and the fresh air temperature.

[0042] In this embodiment, when it is confirmed that the dehumidification system is running in dehumidification mode, the fresh air enthalpy value and the fresh air temperature are obtained. Through the fresh air enthalpy value and the fresh air temperature, it is confirmed whether to regulate the dehumidification unit, and the variable distribution ratio strategy is executed to regulate the first heat exchanger and the second heat exchanger.

[0043] By using the fresh air enthalpy value and the fresh air temperature, it is determined whether the fresh air enthalpy value is less than the set enthalpy value and whether the fresh air temperature is less than the set fresh air temperature, so as to confirm whether the condensation heat of the second heat exchanger may be insufficient under the current fresh air working condition and according to the current heat exchange processing strategy.

[0044] Among them, the set enthalpy value and the set fresh air temperature can be set according to the current heat exchange processing strategy.

[0045] For example, in the transition season, when the fresh air temperature is 16°C and the fresh air humidity is 50%, the fresh air enthalpy is lower than 33 kJ / kg and the fresh air dew point is 5.6°C. The fresh air enthalpy is less than the set enthalpy value of 33 kJ / kg and the fresh air temperature is less than the set fresh air temperature of 18°C. If the first heat exchanger is controlled to perform the initial heat exchange treatment on the fresh air at 12°C to perform the air outlet control, the initial heat exchange is operated in the dry condition. When the fresh air is cooled to a temperature of 12°C and a dew point of 5.6°C, the fresh air is cooled to a temperature of 12°C and a dew point of 5.6°C. The enthalpy value entering the second heat exchanger is far lower than 33kJ / kg, which will result in a very small cooling capacity of the second heat exchanger in the subsequent stage, that is, the condensation heat is very small, and it is impossible to ensure that the set air supply temperature range is 16℃-20℃ for the outlet air, and the required air temperature cannot be delivered. In addition, the operating frequency of the compressor is relatively low. It is possible that when the frequency is minimum, the cooling output is too large, causing the evaporator to freeze, or the minimum return oil flow rate of the system cannot be guaranteed, resulting in the dehumidification system being not energy-saving and unstable operation. In this case, a variable allocation ratio strategy needs to be implemented.

[0046] Exemplarily, in the transition season, when the fresh air temperature is greater than 12°C and the fresh air humidity is greater than 95%, the fresh air enthalpy is greater than 33 kJ / kg. The first heat exchanger and the second heat exchanger are controlled to operate according to the current heat exchange processing strategy. The set air supply temperature range is 16°C-20°C, and the required air temperature can be delivered. In addition, there is no shortage of condensation heat in the second heat exchanger, so there is no need to execute the variable distribution ratio strategy.

[0047] Detect the introduced fresh air conditions, and use the fresh air enthalpy and fresh air temperature to confirm whether the variable allocation ratio strategy is executed, so as to determine whether the condensing heat of the second heat exchanger may be insufficient under the current fresh air conditions and according to the current heat exchange processing strategy, so as to prevent misjudgment and erroneous execution of the variable allocation ratio strategy.

[0048] S200: If yes, dynamically adjust the heat exchange temperature of the first heat exchanger, and control the first heat exchanger to perform initial heat exchange processing on the fresh air according to the adjusted heat exchange temperature.

[0049] In this embodiment, when it is confirmed that the variable allocation ratio strategy needs to be executed, the heat exchange temperature of the first heat exchanger is dynamically adjusted so that the first heat exchanger operates in a variable temperature mode.

[0050] In the first heat exchanger, according to the adjusted heat exchange temperature, the first heat exchanger is controlled to perform initial heat exchange treatment on the fresh air, so that the temperature of the fresh air after the initial heat exchange treatment reaches the adjusted heat exchange temperature, that is, the second air temperature detected by the first temperature detector reaches the adjusted heat exchange temperature.

[0051] It can be known from S100 that for the current fresh air condition, the dehumidification system needs to execute a variable distribution ratio strategy to prevent the first heat exchanger from operating in a dry condition and causing insufficient condensation heat. The first heat exchanger is then dynamically adjusted to confirm the heat exchange temperature for maintaining operation through subsequent steps.

[0052] S300, detecting the current supply air temperature. When the current supply air temperature is lower than the set supply air temperature, determining the current heat exchange temperature, detecting the heat recovery rate of the dehumidification system and the first air temperature after the second heat exchange process.

[0053] In this embodiment, the current supply air temperature at the air supply outlet is detected, the set supply air temperature and the current supply air temperature are compared, and it is determined whether the supply air temperature is less than the set supply air temperature to confirm the heat exchange temperature currently being adjusted and at which the first heat exchanger is operating, that is, the current heat exchange temperature.

[0054] When the supply air temperature is lower than the set supply air temperature, the heat exchange temperature currently adjusted and in operation by the first heat exchanger is confirmed to determine the current heat exchange temperature, and the heat recovery rate of the dehumidification system and the first air temperature of the fresh air after the second heat exchange treatment are detected. In other words, the heat recovery rate of the dehumidification system is detected, and the refrigerant processed by the compressor output through the subsequent direct expansion pipeline is detected, and the first air temperature of the fresh air after the second heat exchange treatment is detected.

[0055] When the supply air temperature is greater than or equal to the set supply air temperature, the initial heat exchange process is performed according to the set heat exchange temperature, and the initial heat exchange process is not performed at the current heat exchange temperature, so as to control the first heat exchanger to control the outlet of fresh air.

[0056] In another embodiment, the ambient temperature of the target air supply area may be detected. When the ambient temperature is lower than the set ambient temperature, the current heat exchange temperature is determined, and the heat recovery rate and the first air temperature are detected.

[0057] S400, when the heat recovery rate is within the set full input range and the first wind temperature reaches the set temperature value, the input percentage of the compressor is detected.

[0058] In this embodiment, based on the condition that the air supply temperature is less than the set air supply temperature, it is determined whether the heat recovery rate is within the set full input range. The set full input range can be a heat recovery rate of 90% to 100%.

[0059] When the heat recovery rate is not within the set full input range, that is, the heat recovery rate is less than the set minimum threshold in the set full input range, the first heat exchanger is controlled to perform initial heat exchange processing according to the set heat exchange temperature to run the dehumidification mode, return to S300, detect the current supply air temperature again, and detect and judge the heat recovery rate again until the heat recovery rate is within the set full input range.

[0060] When the heat recovery rate is within the set full input range, it is determined whether the first wind temperature of the subsequent stage reaches the set temperature value. The set temperature value may be a preset temperature value or a dew point value of the target air supply area of ​​the system.

[0061] When the heat recovery rate is within the set full input range and the first air temperature of the rear stage reaches the set temperature value, the input percentage of the compressor in the direct expansion pipeline is detected.

[0062] S500, when the input percentage is less than or equal to the set input value, the auxiliary heat exchanger is cut out first, the set temperature to be changed is superimposed on the current heat exchange temperature to obtain the control temperature, and the first heat exchanger is controlled to perform the initial heat exchange treatment according to the control temperature to maintain the set operation time.

[0063] In this embodiment, according to the input percentage detected in S400, it is determined whether the input percentage of the compressor is greater than the set input value.

[0064] Since the compressor is the subsequent cold source in this dehumidification system, when the second air temperature after the initial heat exchange treatment is too high, the dew point requirement of the second heat exchanger cannot be guaranteed, that is, the dew point of the fresh air after the second heat exchange treatment cannot meet the dew point requirement. In this case, it is necessary to analyze the current frequency of the compressor through the compressor input percentage. If the frequency is high, the condensation heat is high, and there is no need to increase the heat exchange temperature of the current adjustment operation.

[0065] When the input percentage is less than or equal to the set input value, the compressor is not overloaded. In order to ensure the dew point requirement of the second heat exchanger, the heat exchange temperature of the current regulation operation needs to be increased, and the auxiliary heat exchanger is preferentially cut out from the dehumidification system.

[0066] Since the fresh air condition of the dehumidification system changes with time, for example, the temperature difference between day and night in the north is more than 15°C, it is logically possible that the condensation heat is 100% insufficient, the auxiliary heater is supplementing, and the temperature is high during the day, so it is necessary to unload the auxiliary heater to achieve energy saving and reduce the energy consumption of the entire machine.

[0067] The current heat exchange temperature is superimposed on the set temperature to be changed to obtain the control temperature. The first heat exchanger is controlled to perform initial heat exchange processing on the fresh air according to the control temperature, and the set operating time is maintained without adjustment. After the set operating time ends, return to S100 to determine again whether to execute the variable distribution ratio strategy or end the dehumidification mode.

[0068] In one embodiment, the method for determining the set required temperature is: according to the operating frequency and input percentage of the compressor, the corresponding set required temperature is determined cyclically using a fuzzy algorithm. The set required temperature is a fixed value.

[0069] Whether it is necessary to execute the variable distribution ratio strategy is judged by the fresh air enthalpy value and the fresh air temperature to prevent misjudgment, and the heat exchange temperature of the first heat exchanger is dynamically adjusted to make the first heat exchanger operate in a variable temperature mode. The current supply air temperature, heat recovery rate, the first air temperature of the second heat exchange treatment and the input percentage of the compressor are detected and judged in turn to determine the heat recovery input condition and the current heat exchange temperature. When it is determined that the input percentage of the compressor is less than or equal to the set input value, the auxiliary heat exchanger is preferentially cut out, and the set temperature to be changed is superimposed on the currently adjusted heat exchange temperature to obtain the control temperature, so as to execute the variable distribution ratio operation strategy, solve the problem that the existing dehumidification air-conditioning system is still insufficient in full input of condensation heat recovery in the transition season, further reduce the input of the auxiliary heat exchanger, better precipitate the condensation heat of the direct expansion pipeline, and reduce the energy consumption of the whole machine, so as to meet the requirements of both the supply air dew point and the supply air dry bulb temperature, and improve the reliability of the dehumidification system to better meet the needs of process environmental control.

[0070] The invention solves the problem that the heat source of the existing dehumidifier unit for constant temperature and humidity cold and heat offset adopts the method of electric reheating, steam reheating or hot water reheating, which leads to high energy consumption.

[0071] The problem that in the existing dual-cold-source dehumidification system, when the direct expansion pipeline with condensation heat recovery function and the pre-cooling of the first heat exchanger are controlled according to a fixed heat exchange temperature, the fresh air will be pre-cooled and run in a dry condition at high temperature and low humidity, resulting in too small dehumidification cooling capacity of the second heat exchanger and insufficient condensation heat is solved.

[0072] The problem that in the existing dual-cold-source dehumidification system, when the direct expansion pipeline with condensation heat recovery function and the pre-cooling of the first heat exchanger are controlled according to a fixed heat exchange temperature, the fresh air will be pre-cooled and run in a dry condition at high temperature and low humidity, resulting in too small dehumidification cooling capacity of the second heat exchanger, so that the operating frequency of the compressor is too small, oil return cannot be guaranteed, and even the cooling capacity is too large at the minimum frequency and ice forms.

[0073] Reference Figure 1 In some embodiments of one aspect of the present invention, the method for adjusting the condensation heat demand distribution ratio further includes the following steps: S600, when the input percentage is greater than the set input value, the first heat exchanger is controlled to maintain the current heat exchange temperature to perform initial heat exchange processing on the fresh air.

[0074] S610, the auxiliary heater is put into the dehumidification system to operate the dehumidification mode.

[0075] In this embodiment, when the input percentage is greater than the set input value, it is considered that the compressor may be overloaded and the dew point requirement of the second heat exchanger can be guaranteed. There is no need to increase the heat exchange temperature of the current adjustment operation, and the current heat exchange temperature can be maintained unchanged to perform initial heat exchange treatment on the fresh air.

[0076] The auxiliary heater is put into the dehumidification system to run the dehumidification mode until the dehumidification mode is completed or the process returns to S100 to determine again whether to execute the variable allocation ratio strategy.

[0077] By analyzing the input percentage, the condensation heat of the second heat exchanger and the operating conditions of the compressor are determined to determine whether the current heat exchange temperature needs to be increased. This ensures that the compressor operates at a relatively stable frequency while preventing the fresh air from running in a pre-cooling dry condition at high temperature and low humidity, which results in the second heat exchanger having too small a dehumidification and cooling capacity, and thus insufficient condensation heat.

[0078] In some embodiments of one aspect of the present invention, in S100, the specific process of confirming the operation of the dehumidification mode includes the following steps: S110, obtaining fresh air humidity, and calculating the fresh air enthalpy value and fresh air dew point according to the fresh air temperature and fresh air humidity.

[0079] In this embodiment, the fresh air temperature and fresh air humidity are detected at the fresh air valve by a temperature and humidity detector, and the fresh air enthalpy value and fresh air dew point are calculated by the fresh air temperature and fresh air humidity for judgment in subsequent steps.

[0080] S120: When the fresh air dew point is greater than the set dew point, the dehumidification mode is confirmed to be in operation.

[0081] In this embodiment, when the fresh air dew point is greater than the set dew point, it is confirmed that the dehumidification unit needs to run the dehumidification mode.

[0082] In some embodiments of one aspect of the present invention, in S100, the process of determining whether to execute the variable allocation ratio strategy specifically includes: S130, determining whether the fresh air enthalpy value is less than the set enthalpy value and whether the fresh air temperature is less than the set fresh air temperature.

[0083] In this embodiment, it is determined whether the fresh air enthalpy value is less than the set enthalpy value and whether the fresh air temperature is less than the set fresh air temperature to confirm whether the condensation heat of the second heat exchanger may be insufficient under the current fresh air condition and according to the current heat exchange processing strategy.

[0084] For example, in the transition season, when the fresh air temperature is 16°C and the fresh air humidity is 50%, the fresh air enthalpy is lower than 33 kJ / kg and the fresh air dew point is 5.6°C. The fresh air enthalpy is less than the set enthalpy value of 33 kJ / kg and the fresh air temperature is less than the set fresh air temperature of 18°C. If the first heat exchanger is controlled to perform the initial heat exchange treatment on the fresh air at 12°C to perform the air outlet control, the initial heat exchange is operated in the dry condition. When the fresh air is cooled to a temperature of 12°C and a dew point of 5.6°C, the fresh air is cooled to a temperature of 12°C and a dew point of 5.6°C. The enthalpy value entering the second heat exchanger is far lower than 33kJ / kg, which will result in a very small cooling capacity of the second heat exchanger in the subsequent stage, that is, the condensation heat is very small, and it is impossible to ensure that the set air supply temperature range is 16℃-20℃ for the outlet air, and the required air temperature cannot be delivered. In addition, the operating frequency of the compressor is relatively low. It is possible that when the frequency is minimum, the cooling output is too large, causing the evaporator to freeze, or the minimum return oil flow rate of the system cannot be guaranteed, resulting in the dehumidification system being not energy-saving and unstable operation. In this case, a variable allocation ratio strategy needs to be implemented.

[0085] Exemplarily, in the transition season, when the fresh air temperature is greater than 12°C and the fresh air humidity is greater than 95%, the fresh air enthalpy is greater than 33 kJ / kg. The first heat exchanger and the second heat exchanger are controlled to operate according to the current heat exchange processing strategy. The set air supply temperature range is 16°C-20°C, and the required air temperature can be delivered. In addition, there is no shortage of condensation heat in the second heat exchanger, so there is no need to execute the variable distribution ratio strategy.

[0086] Detect the introduced fresh air conditions, and use the fresh air enthalpy and fresh air temperature to confirm whether the variable allocation ratio strategy is executed, so as to determine whether the condensing heat of the second heat exchanger may be insufficient under the current fresh air conditions and according to the current heat exchange processing strategy, so as to prevent misjudgment and erroneous execution of the variable allocation ratio strategy.

[0087] Through the fresh air enthalpy value and fresh air dew point, confirm whether the dehumidification system can meet the set supply air temperature range under the current fresh air working conditions by using the corresponding heat exchange treatment strategy to treat the fresh air.

[0088] The set enthalpy value and the set fresh air temperature may be set according to the current heat exchange processing strategy, and the heat exchange processing strategy may be: the heat exchanger performs heat exchange processing according to the heat exchange temperature, heat exchange humidity and / or heat exchange dew point.

[0089] Exemplarily, the first heat exchanger performs initial heat exchange treatment on the fresh air according to the heat exchange treatment strategy with a set heat exchange temperature of 12°C and a heat exchange humidity of 95%, so that the temperature (second air temperature) of the fresh air after the initial heat exchange treatment reaches 12°C, and the humidity of the fresh air after the initial heat exchange treatment reaches 95%. The second heat exchanger performs a second heat exchange treatment on the fresh air according to the heat exchange treatment strategy with a set heat exchange temperature of 2°C and a heat exchange humidity of 95%, so that the temperature (first air temperature) of the fresh air after the second heat exchange treatment reaches 2°C, and the humidity of the fresh air after the second heat exchange treatment reaches 95%.

[0090] S140: If yes, it is considered that a variable allocation ratio strategy needs to be executed.

[0091] In this embodiment, when the fresh air enthalpy value is less than the set enthalpy value and the fresh air temperature is less than the set fresh air temperature, it can be considered that the condensation heat of the second heat exchanger of the dehumidification system may be insufficient under the current fresh air working condition, and it is necessary to execute a variable distribution ratio strategy to change the current heat exchange processing strategy of the first heat exchanger, adjust the heat exchange temperature of the first heat exchanger, and run subsequent steps.

[0092] S150: If not, it is considered that there is no need to execute the variable allocation ratio strategy.

[0093] Through S130 to S150, before executing the variable allocation ratio strategy, the introduced fresh air condition is detected, and the fresh air enthalpy value and fresh air temperature are used to confirm whether the variable allocation ratio strategy is executed, so as to judge whether the condensing heat of the second heat exchanger may be insufficient under the current fresh air condition and according to the current heat exchange processing strategy, so as to prevent the operation strategy from being misjudged and misoperated.

[0094] In some embodiments of one aspect of the present invention, the method for adjusting the condensation heat demand distribution ratio further includes: When it is confirmed that there is no need to execute the variable distribution ratio strategy, the first heat exchanger is controlled to perform initial heat exchange processing on the fresh air according to the set heat exchange temperature.

[0095] In this embodiment, when the dehumidification system is in the current fresh air condition, and the current fresh air does not satisfy the condition that the fresh air enthalpy value is less than the set enthalpy value and the fresh air temperature is less than the set fresh air temperature, there is no need to execute the variable distribution ratio strategy, the current heat exchange processing strategy of the first heat exchanger is not changed, and the heat exchange temperature of the first heat exchanger is not adjusted.

[0096] The first heat exchanger is controlled to perform a primary heat exchange process according to a set heat exchange temperature to operate a dehumidification mode.

[0097] Exemplarily, the heat exchange processing strategy currently set for the first heat exchanger is a heat exchange temperature of 12°C and a heat exchange humidity of 95%. When it is confirmed that there is no need to execute the variable allocation ratio strategy, the opening of the refrigerant regulating valve is adjusted according to the heat exchange temperature of 12°C and the heat exchange humidity of 95%, and the first heat exchanger is controlled to perform initial heat exchange processing on the fresh air, so that the second wind temperature reaches 12°C and the relative humidity of the fresh air after the initial heat exchange processing reaches 95%.

[0098] In some embodiments of one aspect of the present invention, in S200, the control process of the first heat exchanger specifically includes: S210, adjusting the heat exchange temperature according to the set temperature step.

[0099] In this embodiment, the heat exchange temperature in the heat exchange process strategy of the first heat exchanger is adjusted according to the set temperature step, so that the first heat exchanger operates in a variable temperature mode.

[0100] Among them, the present application adjusts the heat exchange temperature of the first heat exchanger, and the adjustment of other parameters in the heat exchange strategy of the first heat exchanger is not limited in detail in this embodiment.

[0101] S220, adjusting the opening of the refrigerant regulating valve according to the adjusted heat exchange temperature, and controlling the first heat exchanger to perform a primary heat exchange treatment on the fresh air, so that the second air temperature after the primary heat exchange treatment reaches the adjusted heat exchange temperature.

[0102] In this embodiment, in the first heat exchanger, the opening of the refrigerant regulating valve is adjusted according to the adjusted heat exchange temperature to adjust the refrigerant inflow amount of the refrigerant from the external refrigerant pipeline into the first heat exchanger. According to the refrigerant inflow amount, the first heat exchanger performs primary heat exchange treatment on the fresh air so that the temperature of the fresh air after the primary heat exchange treatment reaches the adjusted heat exchange temperature, that is, the second wind temperature detected by the first temperature detector reaches the adjusted heat exchange temperature.

[0103] Exemplarily, the heat exchange processing strategy currently set for the first heat exchanger is a heat exchange temperature of 12°C and a heat exchange humidity of 95%. According to the set temperature step, the heat exchange temperature is adjusted to 13°C. Based on the heat exchange temperature of 13°C and the heat exchange humidity of 95%, the opening of the refrigerant regulating valve is adjusted to control the first heat exchanger to perform initial heat exchange processing on the fresh air, so that the second wind temperature reaches 13°C, and the relative humidity of the fresh air after the initial heat exchange processing reaches 95%.

[0104] Through S210 to S220, for the current fresh air condition, the dehumidification system needs to execute a variable distribution ratio strategy, and the first heat exchanger is dynamically adjusted to prevent the first heat exchanger from operating in a dry condition and insufficient condensation heat, so as to confirm the heat exchange temperature for maintenance of operation through subsequent steps.

[0105] In some embodiments of an aspect of the present invention, S300 specifically includes the following steps: S310, detecting the current air supply temperature at the air supply outlet, comparing the current air supply temperature with the set air supply temperature, and determining whether the current air supply temperature is less than the set air supply temperature.

[0106] In this embodiment, the current supply air temperature at the air supply outlet is detected, and the current supply air temperature is compared with the set supply air temperature to determine whether the supply air temperature is less than the set supply air temperature, so as to confirm the heat exchange temperature currently being adjusted and at which the first heat exchanger is operating, that is, the current heat exchange temperature.

[0107] In another embodiment, the ambient temperature of the target air supply area may be detected. When the ambient temperature is lower than the set ambient temperature, the current heat exchange temperature is determined, and the heat recovery rate and the first air temperature are detected.

[0108] S320: If yes, confirm the current heat exchange temperature, detect the heat recovery rate of the dehumidification system and the first air temperature after the second heat exchange process.

[0109] In this embodiment, when the supply air temperature is lower than the set supply air temperature, the heat exchange temperature currently adjusted and at which the first heat exchanger is operating is confirmed to determine the current heat exchange temperature, and the heat recovery rate of the dehumidification system is detected and the first air temperature of the fresh air after the second heat exchange treatment is detected.

[0110] That is to say, the heat recovery rate of the dehumidification system is detected to determine the heat recovery input of the dehumidification system, and the first wind temperature of the fresh air after the refrigerant processed by the compressor output through the subsequent direct expansion pipeline is detected after the reheat exchange treatment.

[0111] In one embodiment, the outdoor heat rejection and indoor heat rejection in the dehumidification system are detected, and the heat recovery rate is calculated based on the outdoor heat rejection and the indoor heat rejection.

[0112] That is, the indoor heat dissipation inside the indoor casing is detected and the outdoor heat dissipation outside the indoor casing is detected. The heat recovery rate is calculated based on the indoor heat dissipation and the outdoor heat dissipation.

[0113] For example, when the condensing fans in the outdoor heat exchanger outside the indoor casing are all stopped, the heat is only dissipated by the heat recovery device inside the indoor casing. Therefore, the heat recovery input status can be confirmed by detecting the outdoor heat exhaust amount, that is, whether the heat recovery is fully invested.

[0114] S330: If not, control the first heat exchanger to perform initial heat exchange processing on the fresh air according to the set heat exchange temperature.

[0115] In this embodiment, when the supply air temperature is greater than or equal to the set supply air temperature, the initial heat exchange process is performed according to the set heat exchange temperature, and the initial heat exchange process is not performed at the current heat exchange temperature, so as to control the first heat exchanger to control the fresh air outlet.

[0116] In some embodiments of an aspect of the present invention, S400 further includes: S401, when the current supply air temperature is lower than the set supply air temperature and the heat recovery rate is lower than the set minimum threshold value of the full input range within the set time period, controlling the first heat exchanger to perform initial heat exchange processing on the fresh air according to the set heat exchange temperature; S402, return to re-detect the current supply air temperature until the heat recovery rate is within the set full input range.

[0117] In this embodiment, based on the operating condition that the air supply temperature is less than the set air supply temperature, it is determined whether the heat recovery rate is within the set full input range. The set full input range can be a heat recovery rate of 90% to 100%.

[0118] When the supply air temperature is lower than the set supply air temperature and the heat recovery rate is not within the set full input range, that is, the heat recovery rate is lower than the set minimum threshold value in the set full input range, the first heat exchanger is controlled to perform initial heat exchange processing according to the set heat exchange temperature to run the dehumidification mode, return to S300, detect the current supply air temperature again, and detect and determine the heat recovery rate again until the heat recovery rate is within the set full input range.

[0119] In some embodiments of an aspect of the present invention, S400 further includes: S403, when the heat recovery rate is within the set full input range and the first air temperature has not reached the set temperature value, control the first heat exchanger to perform initial heat exchange processing on the fresh air according to the set heat exchange temperature.

[0120] S404, putting the auxiliary heater into the dehumidification system to run the dehumidification mode.

[0121] In this embodiment, when the heat recovery rate is within the set full input range and the first wind temperature of the rear stage has not reached the set temperature value, the first heat exchanger is controlled to maintain the set heat exchange temperature for primary heat exchange treatment, and the auxiliary heat exchanger is put into the dehumidification system to run the dehumidification mode.

[0122] The set temperature value may be a preset temperature value or a dew point value of a target air supply area of ​​the system.

[0123] The working principle and application method of this type of unit, such as adding a liquid storage device, a liquid cooling drive plate, an air jet enthalpy increase economizer and other system auxiliary methods to the dehumidification system and adding other functional sections to the indoor unit side and adjusting the order of the functional sections are all within the protection scope of the present invention; Compressors of variable frequency or fixed frequency and oil or oil-free series, including piston, rotor, scroll, screw, centrifugal, magnetic suspension, gas suspension and other compressors are all within the scope of protection of the present invention; By using this principle to introduce fluorine pump circulation, and adopting series and parallel connection, natural cooling technology can be further realized. Whether it is a liquid pump or an air pump, a centrifugal pump or a gear pump, etc., it is within the protection scope of the present invention; Using this principle to introduce a multi-connection system and using two or more evaporators in parallel is within the protection scope of the present invention; Using this principle, condensation heat dissipation methods including air cooling, water cooling, direct (indirect) evaporation condensation, condensation heat storage or multiple combinations are all within the protection scope of the present invention; Using this principle, evaporative heat absorption methods including direct evaporative cold air, direct evaporative cold water, direct evaporative cold storage or a variety of combinations are all within the protection scope of the present invention; Using this principle, the initial heat exchange process (precooling) is changed to a direct expansion system and is within the scope of protection of the present invention; Using this principle, step dehumidification using more than two stages is within the protection scope of the present invention; Using this principle, all fresh air, partial fresh air or full return air from the indoor unit are all within the protection scope of the present invention; By utilizing this principle, the indoor unit can increase or decrease the functional segments or adjust the sequence between the functional segments, all of which are within the protection scope of the present invention.

[0124] According to an embodiment of another aspect of the present invention, a computer device is provided.

[0125] 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 condensation heat demand variable distribution ratio adjustment method of the step dehumidification is implemented.

[0126] 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.

[0127] 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.

[0128] 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.

[0129] 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.

[0130] 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.

[0131] 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 condensation heat demand variable distribution ratio adjustment method of the step dehumidification is implemented in one aspect.

[0132] 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 method for adjusting the distribution ratio of condensation heat demand in step dehumidification, characterized in that: Applied to a dehumidification system, the dehumidification system comprises: an indoor casing, a compressor, a first heat exchanger, a second heat exchanger and an auxiliary heat device; The first heat exchanger and the second heat exchanger are installed inside the indoor casing, the compressor is located outside the indoor casing, the second heat exchanger is connected to the compressor, and the second heat exchanger is used to perform a second heat exchange process on the fresh air after the initial heat exchange process; The method comprises: When the dehumidification mode is confirmed, the fresh air enthalpy value and the fresh air temperature are obtained, and according to the fresh air enthalpy value and the fresh air temperature, it is determined whether a variable distribution ratio strategy needs to be executed; If so, dynamically adjusting the heat exchange temperature of the first heat exchanger, and controlling the first heat exchanger to perform initial heat exchange processing on the fresh air according to the adjusted heat exchange temperature; Detecting the current supply air temperature, and when the current supply air temperature is less than the set supply air temperature, determining the current heat exchange temperature, detecting the heat recovery rate of the dehumidification system and the first air temperature after the second heat exchange process; When the heat recovery rate is within the set full input range and the first wind temperature reaches the set temperature value, detecting the input percentage of the compressor; When the input percentage is less than or equal to the set input value, the auxiliary heat device is cut out first, and the set temperature to be changed is superimposed on the current heat exchange temperature to obtain the control temperature, and the first heat exchanger is controlled to perform the initial heat exchange treatment according to the control temperature to maintain the set operating time.

2. The method for adjusting the condensation heat demand distribution ratio of step dehumidification according to claim 1 is characterized in that: Also includes: When the input percentage is greater than the set input value, the first heat exchanger is controlled to maintain the current heat exchange temperature to perform initial heat exchange processing on the fresh air; The auxiliary heater is put into the dehumidification system to run the dehumidification mode.

3. The method for adjusting the condensation heat demand distribution ratio of step dehumidification according to claim 1, characterized in that: The step of judging whether to execute the variable distribution ratio strategy according to the fresh air enthalpy value and the fresh air temperature specifically includes: Determine whether the fresh air enthalpy value is less than the set enthalpy value and whether the fresh air temperature is less than the set fresh air temperature; If so, it is considered necessary to implement a variable allocation ratio strategy.

4. The method for adjusting the condensation heat demand distribution ratio of step dehumidification according to claim 1, characterized in that: The first heat exchanger is provided with a refrigerant regulating valve, and the dynamically adjusting the heat exchange temperature of the first heat exchanger and controlling the first heat exchanger to perform initial heat exchange processing on the fresh air according to the adjusted heat exchange temperature specifically includes: Adjusting the heat exchange temperature according to the set temperature step; According to the adjusted heat exchange temperature, the opening of the refrigerant regulating valve is adjusted, and the first heat exchanger is controlled to perform initial heat exchange processing on the fresh air so that the second air temperature after the initial heat exchange processing reaches the adjusted heat exchange temperature.

5. The method for adjusting the condensation heat demand distribution ratio of step dehumidification according to claim 1, characterized in that: The detecting of the heat recovery rate of the dehumidification system specifically comprises: The outdoor heat rejection and the indoor heat rejection of the dehumidification system are detected, and the heat recovery rate is calculated according to the outdoor heat rejection and the indoor heat rejection.

6. The method for adjusting the condensation heat demand distribution ratio of step dehumidification according to claim 1, characterized in that: The step of confirming to run the dehumidification mode specifically includes: Acquire fresh air humidity, and calculate the fresh air enthalpy value and fresh air dew point according to the fresh air temperature and the fresh air humidity; When the fresh air dew point is greater than the set dew point, the dehumidification mode is confirmed to be running.

7. The method for adjusting the condensation heat demand distribution ratio of step dehumidification according to claim 1, characterized in that: Also includes: When it is confirmed that there is no need to execute the variable distribution ratio strategy, the first heat exchanger is controlled to perform initial heat exchange processing on the fresh air according to the set heat exchange temperature.

8. The method for adjusting the condensation heat demand distribution ratio of cascade dehumidification according to claim 1, characterized in that: Also includes: When the current supply air temperature is lower than the set supply air temperature and the heat recovery rate is lower than the set minimum threshold value of the full input range, controlling the first heat exchanger to perform initial heat exchange processing on the fresh air according to the set heat exchange temperature; Return and re-detect the current supply air temperature until the heat recovery rate is within the set full input range.

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 method for adjusting the condensation heat demand distribution ratio of step dehumidification 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 method for adjusting the condensation heat demand distribution ratio of the step dehumidification according to any one of claims 1 to 8 is implemented.

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