Temperature control method of constant-temperature air conditioning unit

Abstract

The invention provides a temperature control method of a constant-temperature air conditioning unit, and relates to the technical field of constant-temperature air conditioners, and the temperature control method comprises the following steps: S1, enabling air to enter a condensation area of the constant-temperature air conditioning unit through an air inducing device, and condensing moisture in the air through a condensation device in the condensation area; s2, the air obtained in the step S1 enters a primary temperature adjusting area of the constant-temperature air conditioning unit to be subjected to primary temperature adjusting; and S3, the air obtained in the step S2 enters a secondary temperature adjustment area of the constant-temperature air conditioning unit to be subjected to secondary temperature adjustment, and then the air is discharged out of the constant-temperature air conditioning unit. The primary temperature regulation area heats air passing through the primary temperature regulation area by utilizing high-temperature and high-pressure gas at an outlet of a compressor; the air passing through the secondary temperature adjusting area is heated by a heating wire in the secondary temperature adjusting area; the defect that energy consumption is high due to the fact that only heating wires are adopted for heating air is avoided; air before entering a temperature adjusting area of the constant-temperature air conditioning unit is condensed and dehumidified, and adverse effects caused by the fact that the air is wet are avoided.

Description

Technical Field

[0001] The invention relates to the technical field of constant temperature air conditioning, and in particular to a temperature control method for a constant temperature air conditioning unit. Background Art

[0002] In the prior art, constant temperature air conditioners are usually used in spaces and places with high temperature requirements, such as laboratories, operating rooms, CT rooms, computer rooms, switch rooms, data centers or museum exhibition rooms.

[0003] Existing constant temperature air conditioners, such as CN119085042A, a constant temperature air conditioner fengshui two-stage temperature control system and method, have the following problems: 1. Lack of condensing device, unable to adjust air humidity. Excessively humid air can easily affect the service life of related components in the temperature adjustment area of ​​the constant temperature air conditioning unit and affect the indoor air quality where the constant temperature air conditioning unit is used; 2. Heating the air only by an electric heater has the disadvantage of high energy consumption. Summary of the invention

[0004] The present invention provides a temperature control method for a constant temperature air conditioning unit, which is used to solve at least one of the technical problems raised by the above background technology.

[0005] In order to solve the above technical problems, the present invention discloses a temperature control method of a constant temperature air conditioning unit, comprising: Step S1: air is introduced into a condensation area of ​​a constant temperature air conditioning unit through an air induction device, and moisture in the air is condensed through a condensation device in the condensation area; Step S2: the air obtained in step S1 enters the primary temperature adjustment area of ​​the constant temperature air conditioning unit for primary temperature adjustment; Step S3: The air obtained in step S2 enters the secondary temperature adjustment area of ​​the constant temperature air conditioning unit for secondary temperature adjustment and then is discharged from the constant temperature air conditioning unit.

[0006] Preferably, step S2 comprises: Step S21: Detecting the air temperature at the intake area of ​​the primary temperature adjustment area by using a first temperature sensor therein; Step S22: when the detection value of the first temperature sensor is less than the first preset temperature, the high-temperature and high-pressure gas at the compressor outlet is used to heat the air passing through the primary temperature adjustment area; When the detection value of the first temperature sensor is greater than the first preset temperature, the heat dissipation device is used to dissipate the heat of air passing through the primary temperature adjustment area.

[0007] Preferably, step S3 includes: Step S31: detecting the air temperature at the intake area of ​​the secondary temperature adjustment area by a second temperature sensor therein; Step S32: When the detection value of the second temperature sensor is lower than the first preset temperature, the heating wire of the secondary temperature adjustment area is used to heat the air passing through the secondary temperature adjustment area.

[0008] Preferably, the fluid inlet of the condensing device is connected to the fluid outlet of the cooling fluid generating device through a fluid inlet pipe, the fluid outlet of the condensing device is connected to the fluid return port of the cooling fluid generating device, and a first control valve is provided on the fluid inlet pipe.

[0009] Preferably, the method further comprises: periodically performing a condensation effect evaluation step, wherein the condensation effect evaluation step sequentially comprises the following steps: Step S10: determining a current first theoretical condensation parameter of the condensation area based on the current temperature and humidity requirements of the air exhausted by the constant temperature air conditioning unit and the current air intake parameter of the condensation area of ​​the constant temperature air conditioning unit obtained by the first air detection module at the air inlet of the condensation area of ​​the constant temperature air conditioning unit; Step S101: determining a first control parameter of a condensing device that matches a current first theoretical condensing parameter; Step S102: controlling the actual control parameter of the condensing device to work for the third preset time length of the first control parameter obtained in step S101, and controlling the second air detection module at the air outlet of the condensation area of ​​the constant temperature air conditioning unit to perform several detections, determining the current actual condensation parameter of the constant temperature air conditioning unit based on the detection results of the first air detection module and the second air detection module, and determining the current condensation effect loss coefficient based on the current first theoretical condensation parameter of the condensation area and the current actual condensation parameter of the constant temperature air conditioning unit; Step S103: issuing an early warning when the current condensation effect loss coefficient is greater than a first preset value.

[0010] Preferably, step S10 includes: Step S1001: obtaining a temperature and humidity comfort curve and a current target temperature of air discharged by a constant temperature air conditioning unit, and determining that the ordinate corresponding to the current target temperature of air discharged by the constant temperature air conditioning unit in the temperature and humidity comfort curve is the current target humidity of air discharged by the constant temperature air conditioning unit; The abscissa of the temperature and humidity comfort curve is the temperature of the air discharged by the constant temperature air conditioning unit, and the ordinate of the temperature and humidity comfort curve is the target humidity of the air discharged by the constant temperature air conditioning unit; Step S1002: obtaining current air intake parameters of the condensation area of ​​the constant temperature air conditioning unit by a first air detection module at the air intake of the condensation area of ​​the constant temperature air conditioning unit, the air intake parameters including: air intake temperature, air intake humidity, air intake flow rate, and air intake pressure; Step S1003: Calculate the current first theoretical condensation parameter of the condensation area based on the current target temperature of the air exhausted by the constant temperature air conditioning unit, the current target humidity of the air exhausted by the constant temperature air conditioning unit, and the current intake parameters of the condensation area of ​​the constant temperature air conditioning unit.

[0011] Preferably, the method further comprises: periodically performing a condensing device control mode evaluation step, wherein the condensing device control mode evaluation step sequentially comprises the following steps: Step S10: determining a current first theoretical condensation parameter of the condensation area based on the current temperature and humidity requirements of the air exhausted by the constant temperature air conditioning unit and the current air intake parameter of the condensation area of ​​the constant temperature air conditioning unit obtained by the first air detection module at the air inlet of the condensation area of ​​the constant temperature air conditioning unit; Step S111: calculating the current second theoretical condensation parameter of the condensation area based on the current first theoretical condensation parameter of the condensation area and the most recently acquired condensation effect loss coefficient; ; is the current second theoretical condensation parameter of the condensation area; W is the current first theoretical condensation parameter of the condensation area; is the condensation effect loss coefficient obtained most recently; Step S112: obtaining a preset dehumidification parameter-first control valve opening curve at a first rated temperature at the outlet of the cooling fluid generating device; and obtaining a preset dehumidification parameter-target cooling fluid temperature curve at the rated opening of the first control valve at the outlet of the cooling fluid generating device; In the dehumidification parameter-first control valve opening curve, the horizontal axis is the dehumidification parameter, and the vertical axis is the first control valve opening; In the dehumidification parameter-target cooling fluid temperature curve at the outlet of the cooling fluid generating device, the horizontal axis is the dehumidification parameter, and the vertical axis is the target cooling fluid temperature at the outlet of the cooling fluid generating device; Step S113: Acquire meteorological data of the air intake environment of the constant temperature air conditioning unit within a first preset time period in the future, determine a second theoretical condensation parameter of the condensation area within the first preset time period in the future based on the meteorological data of the air intake environment of the constant temperature air conditioning unit within the first preset time period in the future, and construct a second theoretical condensation parameter change curve of the condensation area within the first preset time period in the future; Step S114: Calculating the flow evaluation coefficient corresponding to the current second theoretical condensation parameter of the condensation area based on steps S111 to S113; ; is the flow evaluation coefficient corresponding to the current second theoretical condensation parameter of the condensation area; is the dehumidification parameter corresponding to the current second theoretical condensation parameter of the condensation area - the first control valve opening curve compliance coefficient, when In the preset dehumidification parameter-first control valve opening curve at the first rated temperature at the outlet of the cooling fluid generating device, The value is 1, otherwise The value is 0; for Corresponding dehumidification parameter-first control valve opening curve compliance coefficient; is the slope of the second theoretical condensation parameter variation curve of the condensation region at the maximum ordinate within a first preset time period in the future; The maximum slope of the second theoretical condensation parameter variation curve of the condensation region within a first preset time period in the future, within a preset abscissa range on both sides of the maximum ordinate; The second theoretical condensation parameter variation curve of the condensation region within the first preset time period in the future is at the maximum ordinate; Step S115: When the flow evaluation coefficient corresponding to the current second theoretical condensation parameter of the condensation area is 2, it is determined that the condensation device is under constant temperature control from the current to the first preset time in the future; and the actual opening of the first control valve is dynamically adjusted based on the real-time second theoretical condensation parameter of the condensation area and the dehumidification parameter-first control valve opening curve at the first rated temperature of the outlet of the cooling fluid generating device; When the flow evaluation coefficient corresponding to the current second theoretical condensation parameter of the condensation area is less than 2, the condensation device is determined to be under constant flow control from now to the first preset time in the future; and the actual cooling fluid temperature of the outlet of the cooling fluid generating device is dynamically adjusted based on the real-time second theoretical condensation parameter of the condensation area, the dehumidification parameter at the rated opening of the first control valve and the target cooling fluid temperature curve of the outlet of the cooling fluid generating device.

[0012] Preferably, the outlet of the compressor is connected to the inlet of the heat exchange tube through a discharge pipe, the heat exchange tube is installed in the primary temperature adjustment area, and the discharge pipe is connected to the second control valve; Step S2 includes: Step S21: obtaining meteorological data of the air intake environment of the constant temperature air conditioning unit from the current to the second preset time in the future, constructing an air condensation temperature prediction curve; and obtaining a target temperature of the exhaust air of the constant temperature air conditioning unit from the current to the second preset time in the future; In the air condensation temperature prediction curve, the horizontal axis is the first time, and the vertical axis is the predicted value of the air condensation temperature; the time range of the first time is from the present to the second preset time in the future; Step S22: obtaining a variation curve of the second control valve opening-air temperature at the air outlet of the primary temperature adjustment area at each air condensation temperature at the air inlet of the primary temperature adjustment area under the second rated temperature of the compressor outlet (the temperature of the high-temperature and high-pressure gas at the compressor outlet); Step S23: constructing a target opening prediction curve of the second control valve based on step S21 and step S22, wherein the abscissa of the target opening prediction curve of the second control valve is the second time, and the ordinate is the target opening of the second control valve; the second time is equal to the corresponding first time plus the first duration, and the first duration is the duration of air from the air inlet of the constant temperature air conditioning unit to the air inlet of the primary temperature adjustment area (which can be obtained based on testing, and the present invention can control the working power of the induced draft device to be the rated power); The target opening of the second control valve at the second time is obtained as follows: Obtaining a predicted value of the condensation temperature of air corresponding to the first time corresponding to the current second time; Based on the change curve of the air temperature at the air outlet of the primary temperature adjustment area and the second control valve opening under the predicted value of the air condensation temperature corresponding to the first time corresponding to the current second time, the ordinate corresponding to the target temperature of the discharged air within the second preset time period is obtained; When there is a ordinate corresponding to the target temperature of the exhausted air within the second preset time, the ordinate is the target opening of the second control valve corresponding to the current second time; When there is no ordinate corresponding to the target temperature of the discharged air within the second preset time, the opening of the second control valve corresponding to the maximum ordinate in the change curve of the second control valve opening under the predicted value of the condensing temperature of the air corresponding to the first time corresponding to the current second time - the air temperature at the air outlet of the primary temperature adjustment area is selected as the target opening of the second control valve corresponding to the current second time; Step S24: Controlling the operation of the second control valve based on the target opening prediction curve of the second control valve.

[0013] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. Condensation and dehumidification should be performed on the air before it enters the temperature control area of ​​the constant temperature air conditioning unit to prevent overly humid air from directly entering the temperature control area of ​​the constant temperature air conditioning unit, which may easily affect the service life of related components in the temperature control area of ​​the constant temperature air conditioning unit and affect the indoor air quality where the constant temperature air conditioning unit is used; 2. The air in the primary temperature control area 2 of the constant temperature air conditioning unit is heated by the compressor; then in the secondary temperature control area 3, the air whose temperature does not meet the requirements after the primary temperature control area 2 is temperature controlled is reheated by the heating wire to ensure that the temperature of the air discharged by the constant temperature air conditioning unit meets the requirements and avoid the disadvantage of high energy consumption of heating the air only by the heating wire. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings: Figure 1 It is a schematic diagram of the process of the present invention; Figure 2 It is a partial structural schematic diagram of the constant temperature air conditioning unit of the present invention.

[0016] In the figure: 1. Condensation area; 2. Primary temperature control area; 3. Secondary temperature control area; 4. Condensation device; 5. Heat exchange tube. DETAILED DESCRIPTION

[0017] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0018] In addition, in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes, and do not specifically refer to the order or sequence, nor are they used to limit the present invention. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions and technical features between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0019] The present invention provides the following embodiments Embodiment 1, the embodiment of the present invention provides a temperature control method of a constant temperature air conditioning unit, such as Figure 1 , Figure 2 As shown, including: Step S1: air is allowed to enter the condensation area 1 of the constant temperature air conditioning unit through the induced draft device, and moisture in the air is condensed through the condensation device 4 of the condensation area 1; the induced draft device is a prior art, and may be an existing induced draft fan; Step S2: the air obtained in step S1 enters the primary temperature adjustment area 2 of the constant temperature air conditioning unit for primary temperature adjustment; Step S3: The air obtained in step S2 enters the secondary temperature adjustment area 3 of the constant temperature air conditioning unit for secondary temperature adjustment and then is discharged from the constant temperature air conditioning unit.

[0020] Step S2 includes: Step S21: Detecting the air temperature at the intake area of ​​the primary temperature adjustment area 2 by means of a first temperature sensor therein; Step S22: when the detection value of the first temperature sensor is less than the first preset temperature, the high-temperature and high-pressure gas at the compressor outlet is used to heat the air passing through the primary temperature adjustment area 2; When the detection value of the first temperature sensor is greater than the first preset temperature, the heat dissipation device is used to dissipate the heat of the air passing through the primary temperature adjustment area 2.

[0021] Step S3 includes: Step S31: The air temperature at the intake area of ​​the secondary temperature adjustment area 3 is detected by a second temperature sensor of the intake area; Step S32: when the detection value of the second temperature sensor is lower than the first preset temperature, the heating wire of the secondary temperature adjustment area 3 is used to heat the air passing through the secondary temperature adjustment area 3 .

[0022] The beneficial effects of the above technical solution are: 1. Condensation and dehumidification should be performed on the air before it enters the temperature control area of ​​the constant temperature air conditioning unit to prevent overly humid air from directly entering the temperature control area of ​​the constant temperature air conditioning unit, which may easily affect the service life of related components in the temperature control area of ​​the constant temperature air conditioning unit and affect the indoor air quality where the constant temperature air conditioning unit is used; 2. The air in the primary temperature control area 2 of the constant temperature air conditioning unit is heated by the compressor; then in the secondary temperature control area 3, the air whose temperature does not meet the requirements after the primary temperature control area 2 is temperature controlled is reheated by the heating wire to ensure that the temperature of the air discharged by the constant temperature air conditioning unit meets the requirements and avoid the disadvantage of high energy consumption of heating the air only by the heating wire.

[0023] Embodiment 2, based on embodiment 1, the fluid inlet of the condensing device 4 is connected to the fluid outlet of the cooling fluid generating device through the fluid inlet pipe, the fluid outlet of the condensing device 4 is connected to the fluid return port of the cooling fluid generating device, and a first control valve is provided on the fluid inlet pipe. The condensing device 4 is an existing device for condensing the cooling fluid in the condensing tube, such as CN208779669U; the condensing device 4 may also include a condensing tube (which may be a spiral condensing tube), the inlet of the condensing tube is connected to the fluid outlet of the cooling fluid generating device through the fluid inlet pipe, and the fluid outlet of the condensing tube is connected to the fluid return port of the cooling fluid generating device.

[0024] The above technical solution: by setting the first control valve, the flow rate of the cooling fluid in the condensing device 4 can be adjusted to meet different condensation requirements.

[0025] Example 3, based on Example 2, The method also includes: periodically performing a condensation effect evaluation step, wherein the condensation effect evaluation step sequentially includes the following steps: Step S10: determining a current first theoretical condensation parameter of the condensation area 1 based on the current temperature and humidity requirements of the air exhausted by the constant temperature air conditioning unit and the current air intake parameter of the condensation area 1 of the constant temperature air conditioning unit acquired by the first air detection module at the air inlet of the condensation area 1 of the constant temperature air conditioning unit; Step S101: determining a first control parameter of the condensing device 4 that matches the current first theoretical condensing parameter (which can be obtained based on two curves corresponding to the following step S112); the first control parameter can be the opening of the first control valve and the temperature of the cooling fluid generated by the cooling fluid generating device; Step S102: controlling the actual control parameter of the condensing device 4 to be the first control parameter obtained in step S101 to work for the third preset time, and controlling the second air detection module at the air outlet of the condensation area 1 of the constant temperature air conditioning unit to perform several detections, determining the current actual condensation parameter of the constant temperature air conditioning unit based on the detection results of the first air detection module and the second air detection module, and determining the current condensation effect loss coefficient based on the current first theoretical condensation parameter of the condensation area 1 and the current actual condensation parameter of the constant temperature air conditioning unit; Step S103: issuing an early warning when the current condensation effect loss coefficient is greater than a first preset value.

[0026] Step S10 includes: Step S1001: obtaining a temperature and humidity comfort curve and a current target temperature of air discharged by a constant temperature air conditioning unit, and determining that the ordinate corresponding to the current target temperature of air discharged by the constant temperature air conditioning unit in the temperature and humidity comfort curve is the current target humidity of air discharged by the constant temperature air conditioning unit; The abscissa of the temperature and humidity comfort curve is the temperature of the air discharged by the constant temperature air conditioning unit, and the ordinate of the temperature and humidity comfort curve is the target humidity of the air discharged by the constant temperature air conditioning unit; Step S1002: obtaining the current air intake parameters of the condensation area 1 of the constant temperature air conditioning unit obtained by the first air detection module at the air intake of the condensation area 1 of the constant temperature air conditioning unit, the air intake parameters including: air intake temperature, air intake humidity, air intake flow rate, and air intake pressure; in the present invention, the air induction device is controlled to work at rated power; Step S1003: Calculate the current first theoretical condensation parameter of condensation area 1 based on the current target temperature of the air exhausted by the constant temperature air conditioning unit, the current target humidity of the air exhausted by the constant temperature air conditioning unit, and the current intake parameter of condensation area 1 of the constant temperature air conditioning unit.

[0027] The current first theoretical condensation parameter of the condensation zone 1 is calculated based on the following formula: ; ; ; W is the current first theoretical condensation parameter of condensation area 1; The current air intake flow rate of the condensing area 1 of the constant temperature air conditioning unit obtained in step S1002; is the current intake equivalent enthalpy value of the condensing area 1 of the constant temperature air conditioning unit; is the current target outlet air equivalent enthalpy value of the condensing area 1 of the constant temperature air conditioning unit; The current intake air temperature of the condensation area 1 of the constant temperature air conditioning unit obtained in step S1002; The current intake air pressure of the condensation area 1 of the constant temperature air conditioning unit obtained in step S1002; The current absolute humidity of the intake air of the condensation area 1 of the constant temperature air conditioning unit obtained in step S1002; The air temperature is The air saturation humidity at 100°C; Target absolute humidity of exhaust air from thermostatic air conditioning units; The air temperature is The partial pressure of water vapor in saturated moist air; The current target temperature of the outlet of condensing area 1 of the constant temperature air conditioning unit (can be set to the current condensing temperature of the air); The air temperature is The partial pressure of water vapor in saturated moist air; The air temperature is The air saturation humidity at 100°C; The specific volume of the air in the intake environment of the constant temperature air conditioning unit; is the unit temperature; The actual outlet equivalent enthalpy value and condensation effect loss coefficient of condensation area 1 are calculated based on the following formulas: ; is the actual outlet equivalent enthalpy of condensation area 1; is the average value of the temperature of the air outlet of the condensation area 1 detected by the second air detection module; The air temperature is The partial pressure of water vapor in saturated moist air; is the average value of the absolute humidity at the air outlet of the condensation area 1 detected by the second air detection module; The air temperature is The saturated humidity of the air at .

[0028] ; is the current condensation effect loss coefficient.

[0029] The beneficial effects of the above technical solution are: Due to the deposition of dust in the air on the outer wall of the condensation tube of the condensation device 4, the condensation effect of the condensation device 4 may be abnormal; a condensation effect evaluation step is performed periodically to determine the current condensation effect loss coefficient of the condensation device 4, and an early warning is issued when the current condensation effect loss coefficient is greater than a first preset value, reminding the operator to inspect and clean the condensation device 4 to ensure the condensation effect of the condensation device 4.

[0030] In the condensation effect evaluation step, the current first theoretical condensation parameter of the condensation area 1 is determined, and the first control parameter of the condensation device 4 matching the current first theoretical condensation parameter is determined, and the actual control parameter of the condensation device 4 is controlled to be the first control parameter obtained in step S101 to work for the third preset time to perform a condensation effect test to ensure the reliability of the evaluation of the condensation effect.

[0031] Embodiment 4, based on Embodiment 3, further comprises: periodically performing a control mode evaluation step of the condensing device 4, the control mode evaluation step of the condensing device 4 comprising the following steps in sequence: Step S10: determining a current first theoretical condensation parameter of the condensation area 1 based on the current temperature and humidity requirements of the air exhausted by the constant temperature air conditioning unit and the current air intake parameter of the condensation area 1 of the constant temperature air conditioning unit acquired by the first air detection module at the air inlet of the condensation area 1 of the constant temperature air conditioning unit; Step S111: calculating the current second theoretical condensation parameter of the condensation area 1 based on the current first theoretical condensation parameter of the condensation area 1 and the most recently acquired condensation effect loss coefficient; ; is the current second theoretical condensation parameter of the condensation area 1; W is the current first theoretical condensation parameter of the condensation area 1; is the condensation effect loss coefficient obtained most recently; Step S112: obtaining a preset dehumidification parameter-first control valve opening curve at a first rated temperature at the outlet of the cooling fluid generating device; and obtaining a preset dehumidification parameter-target cooling fluid temperature curve at the rated opening of the first control valve at the outlet of the cooling fluid generating device; both of the above curves are determined by testing during the initial use period of the condensing device 4; In the dehumidification parameter-first control valve opening curve, the horizontal axis is the dehumidification parameter, and the vertical axis is the first control valve opening; In the dehumidification parameter-target cooling fluid temperature curve at the outlet of the cooling fluid generating device, the horizontal axis is the dehumidification parameter, and the vertical axis is the target cooling fluid temperature at the outlet of the cooling fluid generating device; Step S113: Acquire meteorological data of the intake environment of the constant temperature air conditioning unit within a first preset time period in the future, determine a second theoretical condensation parameter of the condensation area 1 within the first preset time period in the future based on the meteorological data of the intake environment of the constant temperature air conditioning unit within the first preset time period in the future, and construct a second theoretical condensation parameter change curve of the condensation area 1 within the first preset time period in the future; Step S114: Calculating the flow evaluation coefficient corresponding to the current second theoretical condensation parameter of the condensation area 1 based on steps S111 to S113; ; is the flow evaluation coefficient corresponding to the current second theoretical condensation parameter of the condensation area 1; is the dehumidification parameter corresponding to the current second theoretical condensation parameter W of the condensation area 1 - the first control valve opening curve conformity coefficient, when In the preset dehumidification parameter-first control valve opening curve at the first rated temperature at the outlet of the cooling fluid generating device, The value is 1, otherwise The value is 0; for Corresponding dehumidification parameter-first control valve opening curve compliance coefficient; is the slope of the second theoretical condensation parameter variation curve at the maximum ordinate of the condensation area 1 within the first preset time period in the future; is the maximum slope within a preset abscissa range on both sides of the maximum ordinate of the second theoretical condensation parameter variation curve of the condensation region 1 within a first preset time period in the future; The second theoretical condensation parameter variation curve of the condensation area 1 within the first preset time period in the future is at the maximum ordinate; Step S115: When the flow evaluation coefficient corresponding to the current second theoretical condensation parameter of the condensation area 1 is 2, it is determined that the condensation device 4 is under constant temperature control from the current to the first preset time in the future (that is, the actual high-temperature and high-pressure gas temperature at the outlet of the cooling fluid generating device is always the first rated temperature); and the actual opening of the first control valve is dynamically adjusted based on the real-time second theoretical condensation parameter of the condensation area 1 and the dehumidification parameter-first control valve opening curve at the first rated temperature of the outlet of the cooling fluid generating device; When the flow evaluation coefficient corresponding to the current second theoretical condensation parameter of the condensation area 1 is less than 2, it is determined that the condensation device 4 is in constant flow control from now to the first preset time in the future (that is, the opening of the first control valve is always the rated opening of the first control valve); and the actual cooling fluid temperature of the outlet of the cooling fluid generating device is dynamically adjusted based on the real-time second theoretical condensation parameter of the condensation area 1, the dehumidification parameter at the rated opening of the first control valve - the target cooling fluid temperature curve of the outlet of the cooling fluid generating device.

[0032] The beneficial effects of the above technical solution are: In the present invention, when the flow evaluation coefficient corresponding to the current second theoretical condensation parameter of the condensation area 1 is 2, it is determined that the condensation device 4 is under constant temperature control from the current to the first preset time in the future; that is, the opening of the first control valve is dynamically adjusted during the constant temperature control from the current to the first preset time in the future, that is, when the second theoretical condensation parameter from the current to the first preset time in the future can be met, constant temperature control is preferentially selected to avoid the inconvenience of repeatedly adjusting the temperature of the cooling fluid and the temperature unevenness, as well as affecting the energy consumption of the cooling fluid generating device.

[0033] Example 5, based on Example 1, The outlet of the compressor is connected to the inlet of the heat exchange tube 5 through a discharge pipe, the heat exchange tube 5 is installed in the primary temperature adjustment area 2, and the discharge pipe is connected to the second control valve; Step S2 includes: Step S21: obtaining meteorological data (including air temperature and relative humidity of air) of the air intake environment of the constant temperature air conditioning unit from the current to the second preset time in the future, constructing an air condensation temperature prediction curve; and obtaining a target temperature of the exhaust air of the constant temperature air conditioning unit from the current to the second preset time in the future; In the air condensation temperature prediction curve, the horizontal axis is the first time, and the vertical axis is the air condensation temperature prediction value; the time range of the first time is from the present to the second preset time in the future; the air condensation temperature prediction value is lower than the dew point temperature prediction value preset value, and the dew point temperature prediction value can be calculated based on the following formula: ; is the predicted value of the dew point temperature of the air corresponding to the current first time; is the air temperature of the intake environment corresponding to the current first time; L is the relative humidity of the intake environment corresponding to the current first time; Step S22: obtaining a variation curve of the second control valve opening-air temperature at the air outlet of the primary temperature adjustment area 2 at each air condensing temperature at the inlet of the primary temperature adjustment area 2 under the second rated temperature of the compressor outlet; before formally using the constant temperature air conditioning unit for a long time, obtaining a variation curve of the second control valve opening-air temperature at the air outlet of the primary temperature adjustment area 2 at each integer air condensing temperature at the inlet of the primary temperature adjustment area 2 through testing; Step S23: constructing a target opening prediction curve of the second control valve based on step S21 and step S22, wherein the abscissa of the target opening prediction curve of the second control valve is the second time, and the ordinate is the target opening of the second control valve; the second time is equal to the corresponding first time plus the first duration, and the first duration is the duration of air from the air inlet of the constant temperature air conditioning unit to the inlet of the primary temperature adjustment area 2; The target opening of the second control valve at the second time is obtained as follows: Obtaining a predicted value of the condensation temperature of air corresponding to the first time corresponding to the current second time; A change curve of the air temperature at the air outlet of the first temperature adjustment area 2 at the second control valve opening under the predicted value of the air condensation temperature corresponding to the first time corresponding to the current second time, and obtaining the ordinate corresponding to the target temperature of the discharged air within the second preset time; When there is a ordinate corresponding to the target temperature of the exhausted air within the second preset time, the ordinate is the target opening of the second control valve corresponding to the current second time; When there is no ordinate corresponding to the target temperature of the exhausted air within the second preset time, the opening of the second control valve corresponding to the maximum ordinate in the change curve of the second control valve opening under the predicted value of the condensing temperature of the air corresponding to the first time corresponding to the current second time - the air temperature at the air outlet of the primary temperature adjustment area 2 is selected as the target opening of the second control valve corresponding to the current second time; Step S24: Controlling the operation of the second control valve based on the target opening prediction curve of the second control valve.

[0034] The beneficial effects of the above technical solution are: By acquiring the meteorological data of the air intake environment of the constant temperature air conditioning unit from the current to the second preset time in the future, a condensation temperature prediction curve of the air from the current to the second preset time in the future (corresponding to the air temperature state at the inlet of the primary temperature control area 2 / the outlet of the condensation area 1) is constructed, based on the condensation temperature prediction curve of the air from the current to the second preset time in the future, the target temperature of the exhausted air from the current to the second preset time in the future of the constant temperature air conditioning unit (which may be a constant value), and the heat exchange capacity state parameter of the inlet of the primary temperature control area 2 at each air condensation temperature (the second rated temperature of the compressor outlet, the inlet of the primary temperature control area 2 at each air condensation temperature, the second control valve opening-air temperature change curve of the air outlet of the primary temperature control area 2), the target opening prediction curve of the second control valve is finally determined to ensure the selection of a suitable target opening of the second control valve; When there is a ordinate corresponding to the target temperature of the discharged air within the second preset time, the ordinate is the target opening of the second control valve corresponding to the current second time; that is, when the heat exchange tube 5 of the primary temperature adjustment area 2 can meet the target temperature requirement of the discharged air within the second preset time from now to the future, there is no need for secondary heating by the heating wire; When there is no vertical coordinate corresponding to the target temperature of the discharged air within the second preset time period, the opening of the second control valve corresponding to the maximum vertical coordinate in the change curve of the air temperature at the air outlet of the primary temperature control area 2 under the predicted value of the condensation temperature of the air corresponding to the first time corresponding to the current second time is selected as the target opening of the second control valve corresponding to the current second time; that is, when the heat exchange tube 5 of the primary temperature control area 2 cannot meet the target temperature requirement of the discharged air from the current to the second preset time period in the future, a suitable second target opening is selected to increase the air temperature at the air outlet of the primary temperature control area 2 as much as possible and reduce the heating energy consumption of the heating wire.

[0035] Embodiment 6, based on embodiment 5, step S23 further includes: Constructing a prediction curve of the air temperature at the air outlet of the primary temperature adjustment area 2, wherein the abscissa of the prediction curve of the air temperature at the air outlet of the primary temperature adjustment area 2 is the third time, and the ordinate is the ordinate of a curve of a change of the second control valve opening - the air temperature at the air outlet of the primary temperature adjustment area 2, which is a target opening of the second control valve corresponding to the second time corresponding to the current third time under the corresponding condensation temperature prediction value of the second time corresponding to the first time corresponding to the current third time; The third time is equal to the corresponding second time plus the second duration, where the second duration is the duration of air from the air inlet of the primary temperature adjustment area 2 to the air inlet of the secondary temperature adjustment area 3; Step S2 also includes: Step S25: Determine the required heating power of the air entering the secondary area for the heating wire based on the predicted curve of the air temperature at the air outlet of the primary temperature control area 2 and the target temperature of the exhaust air of the constant temperature air conditioning unit from the current to the second preset time in the future, and construct a predicted curve of the required heating power of the air entering the secondary temperature control area 3 for the heating wire; Step S26: Controlling the operation of the heating wire based on the heating power prediction curve of the air entering the secondary temperature adjustment area 3 for the heating wire.

[0036] The beneficial effects of the above technical scheme are: based on the prediction curve of the air temperature of the air outlet of the primary temperature control area 2 and the target temperature of the exhausted air from the current to the second preset time period in the future of the constant temperature air-conditioning unit, the required heating power of the heating wire for the air entering the secondary area is determined, and a prediction curve of the required heating power of the heating wire for the air entering the secondary temperature control area 3 is constructed. Based on the prediction curve of the required heating power of the heating wire for the air entering the secondary temperature control area 3, the operation of the heating wire is controlled to ensure the reliable operation of the heating wire to ensure the temperature reliability of the exhausted air of the constant temperature air-conditioning unit.

[0037] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A temperature control method for a constant temperature air conditioning unit, characterized in that: include: Step S1: air is introduced into a condensation area of ​​a constant temperature air conditioning unit through an air induction device, and moisture in the air is condensed through a condensation device in the condensation area; Step S2: the air obtained in step S1 enters the primary temperature adjustment area of ​​the constant temperature air conditioning unit for primary temperature adjustment; Step S3: The air obtained in step S2 enters the secondary temperature adjustment area of ​​the constant temperature air conditioning unit for secondary temperature adjustment and then is discharged from the constant temperature air conditioning unit.

2. A temperature control method for a constant temperature air conditioning unit according to claim 1, characterized in that: Step S2 includes: Step S21: Detecting the air temperature at the intake area of ​​the primary temperature adjustment area by using a first temperature sensor therein; Step S22: when the detection value of the first temperature sensor is less than the first preset temperature, the high-temperature and high-pressure gas at the compressor outlet is used to heat the air passing through the primary temperature adjustment area; When the detection value of the first temperature sensor is greater than the first preset temperature, the heat dissipation device is used to dissipate the heat of air passing through the primary temperature adjustment area.

3. A temperature control method for a constant temperature air conditioning unit according to claim 1, characterized in that: Step S3 includes: Step S31: The air temperature at the intake area of ​​the secondary temperature adjustment area is detected by a second temperature sensor of the intake area; Step S32: When the detection value of the second temperature sensor is lower than the first preset temperature, the heating wire of the secondary temperature adjustment area is used to heat the air passing through the secondary temperature adjustment area.

4. The temperature control method of a constant temperature air conditioning unit according to claim 1, characterized in that: The fluid inlet of the condensing device is connected to the fluid outlet of the cooling fluid generating device through the fluid inlet pipe, the fluid outlet of the condensing device is connected to the fluid return port of the cooling fluid generating device, and a first control valve is arranged on the fluid inlet pipe.

5. A temperature control method for a constant temperature air conditioning unit according to claim 4, characterized in that: Also includes: The condensation effect evaluation step is performed periodically, and the condensation effect evaluation step includes the following steps in sequence: Step S10: determining a current first theoretical condensation parameter of the condensation area based on the current temperature and humidity requirements of the air exhausted by the constant temperature air conditioning unit and the current air intake parameter of the condensation area of ​​the constant temperature air conditioning unit obtained by the first air detection module at the air inlet of the condensation area of ​​the constant temperature air conditioning unit; Step S101: determining a first control parameter of a condensing device that matches a current first theoretical condensing parameter; Step S102: controlling the actual control parameter of the condensing device to work for the third preset time length of the first control parameter obtained in step S101, and controlling the second air detection module at the air outlet of the condensation area of ​​the constant temperature air conditioning unit to perform several detections, determining the current actual condensation parameter of the constant temperature air conditioning unit based on the detection results of the first air detection module and the second air detection module, and determining the current condensation effect loss coefficient based on the current first theoretical condensation parameter of the condensation area and the current actual condensation parameter of the constant temperature air conditioning unit; Step S103: issuing an early warning when the current condensation effect loss coefficient is greater than a first preset value.

6. A temperature control method for a constant temperature air conditioning unit according to claim 5, characterized in that: Step S10 includes: Step S1001: obtaining a temperature and humidity comfort curve and a current target temperature of air discharged by a constant temperature air conditioning unit, and determining that the ordinate corresponding to the current target temperature of air discharged by the constant temperature air conditioning unit in the temperature and humidity comfort curve is the current target humidity of air discharged by the constant temperature air conditioning unit; The abscissa of the temperature and humidity comfort curve is the temperature of the air discharged by the constant temperature air conditioning unit, and the ordinate of the temperature and humidity comfort curve is the target humidity of the air discharged by the constant temperature air conditioning unit; Step S1002: obtaining current air intake parameters of the condensation area of ​​the constant temperature air conditioning unit by a first air detection module at the air intake of the condensation area of ​​the constant temperature air conditioning unit, the air intake parameters including: air intake temperature, air intake humidity, air intake flow rate, and air intake pressure; Step S1003: Calculate the current first theoretical condensation parameter of the condensation area based on the current target temperature of the air exhausted by the constant temperature air conditioning unit, the current target humidity of the air exhausted by the constant temperature air conditioning unit, and the current intake parameters of the condensation area of ​​the constant temperature air conditioning unit.

7. A temperature control method for a constant temperature air conditioning unit according to claim 5, characterized in that: Also includes: The condensing device control mode evaluation step is performed periodically, and the condensing device control mode evaluation step includes the following steps in sequence: Step S10: determining a current first theoretical condensation parameter of the condensation area based on the current temperature and humidity requirements of the air exhausted by the constant temperature air conditioning unit and the current air intake parameter of the condensation area of ​​the constant temperature air conditioning unit obtained by the first air detection module at the air inlet of the condensation area of ​​the constant temperature air conditioning unit; Step S111: calculating the current second theoretical condensation parameter of the condensation area based on the current first theoretical condensation parameter of the condensation area and the most recently acquired condensation effect loss coefficient; ； is the current second theoretical condensation parameter of the condensation area; W is the current first theoretical condensation parameter of the condensation area; is the condensation effect loss coefficient obtained most recently; Step S112: obtaining a preset dehumidification parameter-first control valve opening curve at a first rated temperature at the outlet of the cooling fluid generating device; and obtaining a preset dehumidification parameter-target cooling fluid temperature curve at the rated opening of the first control valve at the outlet of the cooling fluid generating device; In the dehumidification parameter-first control valve opening curve, the horizontal axis is the dehumidification parameter, and the vertical axis is the first control valve opening; In the dehumidification parameter-target cooling fluid temperature curve at the outlet of the cooling fluid generating device, the horizontal axis is the dehumidification parameter, and the vertical axis is the target cooling fluid temperature at the outlet of the cooling fluid generating device; Step S113: Acquire meteorological data of the air intake environment of the constant temperature air conditioning unit within a first preset time period in the future, determine a second theoretical condensation parameter of the condensation area within the first preset time period in the future based on the meteorological data of the air intake environment of the constant temperature air conditioning unit within the first preset time period in the future, and construct a second theoretical condensation parameter change curve of the condensation area within the first preset time period in the future; Step S114: Calculating the flow evaluation coefficient corresponding to the current second theoretical condensation parameter of the condensation area based on steps S111 to S113; ； is the flow evaluation coefficient corresponding to the current second theoretical condensation parameter of the condensation area; is the current second theoretical condensation parameter of the condensation area The corresponding dehumidification parameter-first control valve opening curve conformity coefficient, when In the preset dehumidification parameter-first control valve opening curve at the first rated temperature at the outlet of the cooling fluid generating device, The value is 1, otherwise The value is 0; for Corresponding dehumidification parameter-first control valve opening curve compliance coefficient; is the slope of the second theoretical condensation parameter variation curve of the condensation region at the maximum ordinate within a first preset time period in the future; The maximum slope of the second theoretical condensation parameter variation curve of the condensation region within a first preset time period in the future, within a preset abscissa range on both sides of the maximum ordinate; The second theoretical condensation parameter variation curve of the condensation region within the first preset time period in the future is at the maximum ordinate; Step S115: When the flow evaluation coefficient corresponding to the current second theoretical condensation parameter of the condensation area is 2, it is determined that the condensation device is under constant temperature control from the current to the first preset time in the future; and the actual opening of the first control valve is dynamically adjusted based on the real-time second theoretical condensation parameter of the condensation area and the dehumidification parameter-first control valve opening curve at the first rated temperature of the outlet of the cooling fluid generating device; When the flow evaluation coefficient corresponding to the current second theoretical condensation parameter of the condensation area is less than 2, the condensation device is determined to be under constant flow control from now to the first preset time in the future; and the actual cooling fluid temperature of the outlet of the cooling fluid generating device is dynamically adjusted based on the real-time second theoretical condensation parameter of the condensation area, the dehumidification parameter at the rated opening of the first control valve and the target cooling fluid temperature curve of the outlet of the cooling fluid generating device.

8. The temperature control method of a constant temperature air conditioning unit according to claim 1, characterized in that: The outlet of the compressor is connected to the inlet of the heat exchange tube through a discharge pipe, the heat exchange tube is installed in the primary temperature adjustment area, and the discharge pipe is connected to the second control valve; Step S2 includes: Step S21: obtaining meteorological data of the air intake environment of the constant temperature air conditioning unit from the current to the second preset time in the future, constructing an air condensation temperature prediction curve; and obtaining a target temperature of the exhaust air of the constant temperature air conditioning unit from the current to the second preset time in the future; In the air condensation temperature prediction curve, the horizontal axis is the first time, and the vertical axis is the predicted value of the air condensation temperature; the time range of the first time is from the present to the second preset time in the future; Step S22: obtaining a variation curve of the second control valve opening-air temperature at the air outlet of the primary temperature adjustment area at each air condensation temperature at the air inlet of the primary temperature adjustment area under the second rated temperature of the compressor outlet; Step S23: constructing a target opening prediction curve of the second control valve based on step S21 and step S22, wherein the abscissa of the target opening prediction curve of the second control valve is the second time, and the ordinate is the target opening of the second control valve; the second time is equal to the corresponding first time plus the first duration, and the first duration is the duration of air from the air inlet of the constant temperature air conditioning unit to the air inlet of the primary temperature adjustment area (which can be obtained based on testing, and the present invention can control the working power of the induced draft device to be the rated power); The target opening of the second control valve at the second time is obtained as follows: Obtaining a predicted value of the condensation temperature of air corresponding to the first time corresponding to the current second time; Based on the change curve of the air temperature at the air outlet of the primary temperature adjustment area and the second control valve opening under the predicted value of the air condensation temperature corresponding to the first time corresponding to the current second time, the ordinate corresponding to the target temperature of the discharged air within the second preset time period is obtained; When there is a ordinate corresponding to the target temperature of the exhausted air within the second preset time, the ordinate is the target opening of the second control valve corresponding to the current second time; When there is no ordinate corresponding to the target temperature of the discharged air within the second preset time, the opening of the second control valve corresponding to the maximum ordinate in the change curve of the second control valve opening under the predicted value of the condensing temperature of the air corresponding to the first time corresponding to the current second time - the air temperature at the air outlet of the primary temperature adjustment area is selected as the target opening of the second control valve corresponding to the current second time; Step S24: Controlling the operation of the second control valve based on the target opening prediction curve of the second control valve.

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