High-precision temperature control air conditioning system and control method

Abstract

The invention relates to the technical field of air conditioning, in particular to a high-precision temperature control air conditioning system and a control method.The high-precision temperature control air conditioning system comprises a main unit, a multi-measuring-point dynamic detection module and a pressure oscillation suppression module are installed at the air inlet end of the main unit, and a dynamic control module is arranged at one end of the multi-measuring-point dynamic detection module and one end of the pressure oscillation suppression module; the multi-measuring-point dynamic detection module is used for acquiring static pressure values of wind-direction flow measuring points of the pressure oscillation suppression module and setting the static pressure values as a primary temperature adjustment value and a secondary temperature adjustment value, so that a progressive debugging command can be set according to parameters of the measuring points; in the temperature control state, all the electric control damping air valves are preferentially and uniformly regulated to the opening degree corresponding to a primary temperature regulation value parameter according to the primary temperature regulation value parameter, then stable correction is conducted in the mode that multiple sets of static pressure measurement values are supplemented in the debugging process, a secondary temperature regulation value is obtained, and the corrected secondary temperature regulation value serves as a progressive debugging command. And a temperature debugging change curve is stabilized.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning, and particularly to a high-precision temperature control air conditioning system and a control method thereof. Background Art

[0002] In order to keep the indoor temperature within the required range, the prior art mainly realizes temperature control by setting a constant air volume temperature control system or a variable air volume temperature control system.

[0003] The defect of the traditional fixed temperature control system is that since the air supply volume after being processed by the air conditioning equipment is fixed, in order to keep the indoor temperature within the required range, when there is a load change in the indoor space, since the air volume entering the room is still calculated according to the maximum load, with the air supply volume remaining unchanged, the room temperature will have an overcooling phenomenon, which will force the air that has been cooled to be reheated for the second time. Although the variable air volume air conditioning system can change the air supply volume accordingly with the continuous change of the indoor heating and cooling load through the variable static pressure control method, thus overcoming the shortcomings of the fixed temperature control system.

[0004] However, the problems existing in the above variable air volume air conditioning system are as follows: when only a single measuring point is set to obtain the static pressure data, the static pressure data is easily disturbed by local pressure fluctuations and the error data during the frequent adjustment of the frequency converter, resulting in limited control accuracy. When multiple measuring points are set to obtain the static pressure data of each flow air duct, due to the individual differences in the static pressure data of each measuring point, the direct temperature control method of independently regulating each air duct to the required static pressure value is likely to result in large curve changes in the temperature control parameters output by each air duct, causing debugging temperature differences in each air duct, and the temperature change is not smooth enough during the transition, resulting in a decrease in comfort. Summary of the Invention

[0005] Aiming at the problems in the prior art, the present invention provides a high-precision temperature control air conditioning system and a control method thereof.

[0006] The technical solution adopted by the present invention to solve its technical problems is as follows: On the one hand, the present invention provides a high-precision temperature control air-conditioning system, including a main unit group. A multi-point dynamic detection module and a pressure oscillation suppression module are installed at the air inlet end of the main unit group. One end of the multi-point dynamic detection module and the pressure oscillation suppression module is provided with a dynamic control module. The multi-point dynamic detection module and the pressure oscillation suppression module are both signal-connected to the dynamic control module. The pressure oscillation suppression module is distributed at the fan outlet, the middle section of the main air duct, and the end of the auxiliary air duct. The multi-point dynamic detection module is arranged at the wind direction flow measurement point of the pressure oscillation suppression module, and is used to obtain the static pressure value at the wind direction flow measurement point of the pressure oscillation suppression module and the opening degree of the air outlet end of the pressure oscillation suppression module. The dynamic control module sets a progressive debugging command according to the measurement point parameters obtained by the multi-point dynamic detection module, and is used to smooth the temperature debugging change curve. One end of the dynamic control module is provided with a low-difference adjustment coefficient processing module, and the low-difference adjustment coefficient processing module is used to generate an initial debugging value at startup under the subsequent same temperature environment according to the progressive debugging command output by the dynamic control module.

[0007] Preferably, the multi-point dynamic detection module includes a static pressure sensor and an opening degree sensor. The static pressure sensor and the opening degree sensor are both arranged at the installation position of the pressure oscillation suppression module. The opening degree sensor is used to determine whether the current opening degree of the pressure oscillation suppression module corresponds to the static pressure parameter obtained by the static pressure sensor.

[0008] Preferably, the pressure oscillation suppression module includes an electric control damping air valve, a secondary lock, and an air valve actuator. The electric control damping air valve is installed at the fan outlet, the middle section of the main air duct, and the end of the auxiliary air duct. The secondary lock is installed at the valve opening and closing port of the electric control damping air valve. The air valve actuator is signal-connected to the electric control damping air valve and the secondary lock. After the electric control damping air valve completes the opening degree adjustment according to the progressive debugging command output by the dynamic control module, the opening degree is locked through the secondary lock.

[0009] Preferably, the dynamic control module includes a fast execution module, a pressure gradient parameter correction module, a regulation variable input module, and a secondary execution module. The fast execution module is signal-connected to the air valve actuator. The pressure gradient parameter correction module is signal-connected to the static pressure sensor. The regulation variable input module is signal-connected to the pressure gradient parameter correction module. The regulation variable input module is signal-connected to the secondary execution module. The secondary execution module is signal-connected to the air valve actuator. The fast execution module is configured to set a primary temperature adjustment value according to the measured static pressure value of the measurement point initially obtained by the static pressure sensor. After the static pressure sensor continuously measures multiple measured static pressure values of the measurement points, the pressure gradient parameter correction module corrects the multiple measured static pressure values of the measurement points and generates a secondary temperature adjustment value, and inputs the current secondary temperature adjustment value into the secondary execution module through the regulation variable input module for progressive debugging of the air-conditioning temperature.

[0010] Preferably, the secondary execution module is signal-connected to the low-difference adjustment coefficient processing module. The low-difference adjustment coefficient processing module is configured to obtain the secondary temperature adjustment value input by the secondary execution module, calculate the difference percentage from the primary debugging value, and use the difference percentage obtained by the low-difference adjustment coefficient processing module as the correction coefficient for the primary temperature adjustment value subsequently sent by the fast execution module to the air valve actuator in the same temperature environment.

[0011] Preferably, the air valve actuator is signal-connected to the opening sensor. When the opening sensor determines that the current opening of the electronically controlled damping air valve does not match the static pressure parameter obtained by the static pressure sensor, a reset signal is sent to the air valve actuator, and then the electronically controlled damping air valve is controlled by the air valve actuator to reset and re-correspond the opening adjustment with the current static pressure parameter value.

[0012] On the other hand, the present invention provides a control method for a high-precision temperature control air-conditioning system, including the following steps: Step S1: After inputting the temperature regulation requirement value, obtain the measured static pressure values of the measurement points at the fan outlet, the middle section of the main air duct, and the end of the auxiliary air duct through the static pressure sensor; Step S2: Obtain the valve opening of the electronically controlled damping air valve correspondingly arranged at the fan outlet, the middle section of the main air duct, and the end of the auxiliary air duct through the opening sensor, and determine whether the valve opening of the current electronically controlled damping air valve reaches the corresponding measured static pressure. When it does not reach the corresponding measured static pressure, control the opening of the electronically controlled damping air valve to reset through the air valve actuator, so that the current opening of the electronically controlled damping air valve matches the corresponding opening required by the measured static pressure, that is, the initial startup preparation work is completed; In step S3, after the fast execution module obtains the current input temperature regulation requirement, it first reads the preset static pressure value corresponding to the temperature regulation requirement, and takes the deviation between the measured point static pressure value obtained by the current static pressure sensor and the preset static pressure value as the primary temperature regulation value. Then, the fast execution module sets the primary temperature regulation value as the opening debugging parameter, and the air valve actuator sends an opening debugging command to the electronically controlled damping air valve. At this time, the electronically controlled damping air valve adjusts the total supply air volume through the opening debugging. After the total air volume is adjusted, the fan outlet, the middle section of the main air duct, and the end of the auxiliary air duct quickly reach the preset static pressure value to meet the temperature control requirement; In step S4, after the electronically controlled damping air valve completes the opening debugging through the primary temperature regulation value, the static pressure sensor fills the current real-time measured point static pressure value into the pressure gradient correction parameter module at intervals of S. The pressure gradient correction parameter module performs smooth correction on the multiple groups of static pressure measurement values filled in, and then uses the corrected secondary temperature regulation value as the progressive debugging command to debug the opening of the electronically controlled damping air valve through the secondary temperature regulation value to perform smooth adjustment of the total supply air volume, so that the fan outlet, the middle section of the main air duct, and the end of the auxiliary air duct accurately reach the preset static pressure value, which is used to reduce the temperature control error and complete the smooth transition during low-latency temperature control to meet the temperature control requirement; In step S5, after the temperature regulation ends, the low-difference regulation coefficient processing module reads the smoothly corrected secondary temperature regulation value and replaces it with the primary temperature regulation value for subsequent temperature regulation to optimize the smoothness during subsequent initial temperature regulation.

[0013] Preferably, the processing steps for the pressure gradient correction parameter module to perform smooth correction on the multiple groups of static pressure measurement values filled in include: In step S1, obtain the static pressure values monitored by three groups of static pressure sensors set corresponding to the fan outlet, the middle section of the main air duct, and the end of the auxiliary air duct, and set the three groups of static pressure values as the fan outlet value , the middle section value of the main air duct , and the end value of the auxiliary air duct ; In step S2, set the static pressure value monitoring and acquisition interval to 10s and the acquisition period to 1min, that is, obtain the fan outlet value , the middle section value of the main air duct , and the end value of the auxiliary air duct ; In step S3, obtain the weights according to the proportion of the influence of the opening of the electronically controlled damping air valve on the air duct resistance of the static pressure value distributed at the fan outlet, the middle section of the main air duct, and the end of the auxiliary air duct, including the fan outlet coefficient , the middle section coefficient of the main air duct and the end coefficient c of the auxiliary air duct; In step S4, substitute the collected values in step S and the weight coefficients obtained in step S into the following formula as the corrected secondary temperature regulation value: 。

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: The static pressure values of the wind direction flow measurement points of the pressure oscillation suppression module are obtained through the multi-measurement-point dynamic detection module and set as the primary temperature adjustment value and the secondary temperature adjustment value. Furthermore, the progressive debugging command can be set according to the measurement point parameters. Under the temperature control state, all the electronically controlled damping air valves are uniformly adjusted to the corresponding opening degree of this parameter according to the primary temperature adjustment value parameter first. Then, during the debugging process, stable correction is carried out by supplementing multiple groups of static pressure measurement values to obtain the secondary temperature adjustment value. By using the corrected secondary temperature adjustment value as the progressive debugging command, the stable temperature debugging change curve is stabilized. Compared with the fixed air volume debugging method, a smooth transition can be achieved when completing temperature control with low latency, meeting the temperature control requirements. Compared with the variable air volume debugging method, since the transition deviation from the primary temperature adjustment value to the secondary temperature adjustment value is lower, and after parameter correction, by using the method of progressively debugging from the primary temperature adjustment state to the secondary temperature adjustment value synchronously, the temperature control error can be reduced and the comfort level during temperature adjustment can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described below with reference to the drawings and embodiments.

[0016] Figure 1 is the system composition diagram of the present invention; Figure 2 is the variable air volume control system diagram of the present invention; Figure 3 is the existing variable air volume control system diagram.

[0017] In the figure: 1, main unit group; 2, multi-measurement-point dynamic detection module; 21, static pressure sensor; 22, opening sensor; 3, pressure oscillation suppression module; 31, electronically controlled damping air valve; 32, secondary lock; 33, air valve actuator; 4, dynamic control module; 41, fast execution module; 42, pressure gradient parameter correction module; 43, regulation variable input module; 44, secondary execution module; 5, low difference adjustment coefficient processing module. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] In order to make the technical means, creative features, achieved purposes and effects of the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0019] Such as Figures 1 - 3As shown in the figure, a high-precision temperature control air-conditioning system and control method according to the present invention includes a main unit group 1. A multi-point dynamic detection module 2 and a pressure oscillation suppression module 3 are installed at the air inlet end of the main unit group 1. One end of the multi-point dynamic detection module 2 and the pressure oscillation suppression module 3 is provided with a dynamic control module 4. The multi-point dynamic detection module 2 and the pressure oscillation suppression module 3 are both connected to the dynamic control module 4 in a signal manner. The pressure oscillation suppression module 3 is distributed at the outlet of the fan, the middle section of the main air duct, and the end of the auxiliary air duct. The multi-point dynamic detection module 2 is arranged at the air flow measurement point of the pressure oscillation suppression module 3 for obtaining the static pressure value of the air flow measurement point of the pressure oscillation suppression module 3 and the opening degree of the air outlet end of the pressure oscillation suppression module 3. The dynamic control module 4 sets a progressive debugging command according to the measurement point parameters obtained by the multi-point dynamic detection module 2 for smoothing the temperature debugging change curve. One end of the dynamic control module 4 is provided with a low-difference adjustment coefficient processing module 5, and the low-difference adjustment coefficient processing module 5 is used to generate an initial debugging value at startup in the subsequent same temperature environment according to the progressive debugging command output by the dynamic control module 4.

[0020] In this embodiment, in order to solve the problem that when a traditional variable air volume air-conditioning system sets multiple measurement points to obtain the static pressure data of each flow air duct, due to individual differences in the static pressure data of each measurement point, the direct temperature control method of independently regulating each air duct to the required static pressure value is likely to cause large curve changes in the temperature control parameters output by each air duct, resulting in debugging temperature differences in each air duct and insufficiently smooth temperature change transitions. The present invention proposes a high-precision temperature control air-conditioning system to solve this technical problem by setting a multi-point dynamic detection module 2, a pressure oscillation suppression module 3, a dynamic control module 4, and a low-difference adjustment coefficient processing module 5.

[0021] In an alternative implementation manner of this embodiment, the multi-point dynamic detection module 2 includes a static pressure sensor 21 and an opening degree sensor 22. The static pressure sensor 21 and the opening degree sensor 22 are both arranged at the installation position of the pressure oscillation suppression module 3. The opening degree sensor 22 is used to determine whether the current opening degree of the pressure oscillation suppression module 3 corresponds to the static pressure parameter obtained by the static pressure sensor 21.

[0022] In this embodiment, the opening degree sensor 22 is arranged at the valve port transmission end of the electronically controlled damping air valve 31 in the pressure oscillation suppression module 3 for detecting the opening degree of the electronically controlled damping air valve 31. Since there is a necessary relationship between the flow static pressure and the opening degree, the larger the opening degree, the greater the air volume, and the smaller the opening degree, the smaller the flow static pressure. Before actual measurement, it is necessary to measure the control value of the valve opening degree and the flow static pressure. Since the calculation method of the control value of the valve opening degree and the flow static pressure is a well-known technical means, the calculation principle thereof will not be elaborated in this solution.

[0023] In an alternative embodiment of this embodiment, the pressure oscillation suppression module 3 includes an electronically controlled damping air valve 31, a secondary locking device 32, and an air valve actuator 33. The electronically controlled damping air valve 31 is installed at the outlet of the fan, the middle section of the main air duct, and the end of the secondary air duct. The secondary locking device 32 is installed at the valve opening and closing of the electronically controlled damping air valve 31. The air valve actuator 33 is signal-connected to the electronically controlled damping air valve 31 and the secondary locking device 32. After the electronically controlled damping air valve 31 completes the opening adjustment according to the progressive debugging command output by the dynamic control module 4, the opening is locked through the secondary locking device 32. Among them, please refer to Figure 2 , the pressure oscillation suppression module 3 is set to three groups, corresponding to the positions of S1, S2, and S3 in the figure respectively.

[0024] In this embodiment, the selection of the electronically controlled damping air valve 31 can reduce the pressure oscillation when debugging the valve opening compared with the traditional electric valve. The electronically controlled damping air valve 31 dynamically adjusts the valve opening according to the static pressure signal feedback by the air valve actuator 33. And after the opening adjustment is completed, the secondary locking device 32 is set to lock the electronically controlled damping air valve 31 after the opening adjustment, so as to maintain the stability of the opening of the electronically controlled damping air valve 31 during the temperature adjustment cycle.

[0025] In an alternative embodiment of this embodiment, the dynamic control module 4 includes a fast execution module 41, a pressure gradient parameter correction module 42, a control variable input module 43, and a secondary execution module 44. The fast execution module 41 is signal-connected to the air valve actuator 33. The pressure gradient parameter correction module 42 is signal-connected to the static pressure sensor 21. The control variable input module 43 is signal-connected to the pressure gradient parameter correction module 42. The control variable input module 43 is signal-connected to the secondary execution module 44. The secondary execution module 44 is signal-connected to the air valve actuator 33. The fast execution module 41 is used to set a primary temperature adjustment value according to the measured static pressure value obtained by the static pressure sensor 21 at the beginning. After the static pressure sensor 21 continuously measures multiple measured static pressure values, the pressure gradient parameter correction module 42 corrects the multiple measured static pressure values and generates a secondary temperature adjustment value, and inputs the current secondary temperature adjustment value into the secondary execution module 44 through the control variable input module 43 for the progressive debugging of the air conditioner temperature.

[0026] In this embodiment, the pressure gradient parameter correction module 42 selects a single-chip microcomputer, and performs correction calculation on the secondary temperature adjustment value through the pressure gradient parameter correction module 42, so that the valve openings of the electronically controlled damping air valves 31 are adjusted synchronously according to the static pressure value debugging parameters output by the secondary temperature adjustment value, avoiding the temperature difference generated during the debugging between the electronically controlled damping air valves 31.

[0027] In an alternative implementation of this embodiment, the secondary execution module 44 is signal-connected to the low-difference adjustment coefficient processing module 5. The low-difference adjustment coefficient processing module 5 is used to obtain the secondary temperature adjustment value input by the secondary execution module 44, calculate the percentage difference from the primary debugging value, and use the percentage difference obtained by the low-difference adjustment coefficient processing module 5 as the correction coefficient for the primary temperature adjustment value subsequently sent by the fast execution module 41 to the damper actuator 33 in the same temperature environment.

[0028] In this embodiment, the low-difference adjustment coefficient processing module 5 includes a data storage unit, a microprocessor, and a temperature sensor arranged indoors. In order to further reduce the temperature difference during subsequent temperature adjustment operations, when the secondary execution module 44 inputs the secondary temperature adjustment value, the microprocessor in the low-difference adjustment coefficient processing module 5 obtains the secondary temperature adjustment value input by the secondary execution module 44 and calculates the percentage difference from the primary debugging value. After the calculation is completed, the current room temperature data obtained by the temperature sensor is synchronously input into the data storage unit. When performing temperature adjustment in the same temperature environment indoors subsequently, the percentage difference between the secondary temperature adjustment value input into the data storage unit and its primary debugging value in the same cycle is used as the updated primary temperature adjustment value, that is, when generating the primary temperature adjustment value again subsequently, this percentage difference is directly used as the increase amount of the static pressure value.

[0029] In an alternative implementation of this embodiment, the damper actuator 33 is signal-connected to the opening sensor 22. When the opening sensor 22 determines that the current opening of the electronically controlled damping damper 31 is not in compliance with the static pressure parameter obtained by the static pressure sensor 21, a reset signal is sent to the damper actuator 33, and then the electronically controlled damping damper 31 is controlled by the damper actuator 33 to reset and re-correspond the opening adjustment to the current static pressure parameter value.

[0030] In this embodiment, the purpose of resetting the electronically controlled damping damper 31 and re-corresponding the opening adjustment to the current static pressure parameter value is to confirm whether it is caused by a mechanical failure when the current static pressure parameter value and the opening are not corresponding. If they are still not corresponding after re-resetting, the main unit 1 sends a fault code to the system terminal to remind the operator to perform maintenance on the electronically controlled damping damper 31.

[0031] In an alternative implementation of this embodiment, a control method for a high-precision temperature control air-conditioning system includes the following steps: Step S1: After inputting the temperature control requirement value into the main unit 1, obtain the measured static pressure values at the fan outlet, the middle section of the main air duct, and the end of the auxiliary air duct through the static pressure sensor 21; Step S2: The opening degree sensor 22 obtains the valve opening degrees of the electronically controlled damping air valves 31 respectively set at the positions of the fan outlet, the middle section of the main air duct, and the end of the auxiliary air duct, and measures whether the valve opening degree of the current electronically controlled damping air valve 31 reaches the corresponding measured point static pressure. When it does not reach the corresponding measured point static pressure, the air valve actuator 33 is used to control the reset of the opening degree of the electronically controlled damping air valve 31, so that the current opening degree of the electronically controlled damping air valve 31 is consistent with the corresponding opening degree required by the measured point static pressure, that is, the preparation work before the initial start of temperature control is completed; Step S3: After the fast execution module 41 obtains the current input temperature regulation requirement, it first reads the pre-set static pressure value corresponding to the temperature regulation requirement, and takes the deviation between the measured point static pressure value obtained by the current static pressure sensor 21 and the pre-set static pressure value as the first temperature adjustment value. Then, the fast execution module 41 sets the first temperature adjustment value as the opening degree adjustment parameter, and the air valve actuator 33 sends an opening degree adjustment command to the electronically controlled damping air valve 31. At this time, the electronically controlled damping air valve 31 adjusts the total air supply volume through the adjustment of the opening degree. After the total air volume is adjusted, the fan outlet, the middle section of the main air duct, and the end of the auxiliary air duct quickly reach the pre-set static pressure value, meeting the temperature control requirement; Step S4: After the electronically controlled damping air valve 31 completes the opening degree adjustment through the first temperature adjustment value, the static pressure sensor 21 replenishes the current real-time measured point static pressure value into the pressure gradient correction parameter module 42 at intervals of 10S. The pressure gradient correction parameter module 42 performs smooth correction on the replenished multiple groups of static pressure measurement values, and then uses the corrected second temperature adjustment value as the progressive adjustment command. At this time, the air valve actuator 33 adjusts the opening degree of the electronically controlled damping air valve 31 through the second temperature adjustment value to perform smooth adjustment of the total air supply volume, so that the fan outlet, the middle section of the main air duct, and the end of the auxiliary air duct accurately reach the pre-set static pressure value, which is used to reduce the temperature control error and complete the smooth transition during low-latency temperature control, meeting the temperature control requirement; Step S5: After the temperature adjustment is completed, the low-difference adjustment coefficient processing module 5 reads the smoothly corrected second temperature adjustment value and replaces it with the first temperature adjustment value for subsequent temperature regulation to optimize the smoothness during subsequent initial temperature adjustment.

[0032] The processing steps for the pressure gradient correction parameter module 42 to perform smooth correction on the replenished multiple groups of static pressure measurement values include: Step S1: Obtain the static pressure values monitored by the three groups of static pressure sensors 21 respectively set at the fan outlet, the middle section of the main air duct, and the end of the auxiliary air duct, and set the three groups of static pressure values as the fan outlet value 、the middle section value of the main air duct 、the end value of the auxiliary air duct ; Step S2: Set the monitoring and acquisition interval of the static pressure value to 10s and the acquisition period to 1min, that is, obtain the fan outlet value 、the middle section value of the main air duct 、the end value of the auxiliary air duct ; Step S3: Obtain weights according to the proportion of the influence of the valve opening of the electronically controlled damping air valve 31 distributed at the fan outlet, the middle section of the main air duct, and the end of the auxiliary air duct on the static pressure value of the air duct resistance, including the fan outlet coefficient , the coefficient of the middle section of the main air duct and the coefficient c at the end of the auxiliary air duct; Step S4: Substitute the collected values in Step S2 and the weight coefficients obtained in Step S3 into the following formula as the corrected secondary temperature adjustment value: .

[0033] In this embodiment, during the debugging process, by means of multiple groups of static pressure measurement values supplemented, the secondary temperature adjustment value is corrected. Then, after taking the corrected secondary temperature adjustment value as the progressive debugging command, the temperature debugging change curve is stabilized. Compared with the fixed air volume debugging method, the control method provided by the present invention can achieve a smooth transition when completing temperature control with low latency and meet the temperature control requirements. At the same time, compared with the variable air volume debugging method, since the transition deviation from the primary temperature adjustment value to the secondary temperature adjustment value is lower, and after parameter correction, by means of progressive debugging from the primary temperature adjustment state to the secondary temperature adjustment value synchronously, the temperature control error can be reduced and the comfort during temperature adjustment can be improved.

[0034] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the appended claims and their equivalents.

Claims

1. A high-precision temperature-controlled air conditioning system, comprising a main unit group (1), characterized in that: A multi-point dynamic detection module (2) and a pressure oscillation suppression module (3) are installed at the air inlet end of the main unit group (1). One end of the multi-point dynamic detection module (2) and the pressure oscillation suppression module (3) is provided with a dynamic control module (4). The multi-point dynamic detection module (2) and the pressure oscillation suppression module (3) are both signal-connected to the dynamic control module (4). The pressure oscillation suppression module (3) is distributed at the fan outlet, the middle section of the main air duct, and the end of the auxiliary air duct. The multi-point dynamic detection module (2) is arranged at the air flow measurement point of the pressure oscillation suppression module (3) for obtaining the static pressure value of the air flow measurement point of the pressure oscillation suppression module (3) and the opening degree of the air outlet end of the pressure oscillation suppression module (3). The dynamic control module (4) sets a progressive debugging command according to the measurement point parameters obtained by the multi-point dynamic detection module (2) for smoothing the temperature debugging change curve. One end of the dynamic control module (4) is provided with a low difference adjustment coefficient processing module (5), and the low difference adjustment coefficient processing module (5) is used to generate an initial debugging value at startup under the subsequent same temperature environment according to the progressive debugging command output by the dynamic control module (4).

2. The high-precision temperature-controlled air-conditioning system according to claim 1, wherein: The multi-point dynamic detection module (2) includes a static pressure sensor (21) and an opening degree sensor (22). The static pressure sensor (21) and the opening degree sensor (22) are both arranged at the installation position of the pressure oscillation suppression module (3). The opening degree sensor (22) is used to determine whether the current opening degree of the pressure oscillation suppression module (3) corresponds to the static pressure parameter obtained by the static pressure sensor (21).

3. The high-precision temperature control air-conditioning system according to claim 2, wherein: The pressure oscillation suppression module (3) includes an electric control damping air valve (31), a secondary lock (32), and an air valve actuator (33). The electric control damping air valve (31) is installed at the fan outlet, the middle section of the main air duct, and the end of the auxiliary air duct. The secondary lock (32) is installed at the valve opening and closing of the electric control damping air valve (31). The air valve actuator (33) is signal-connected to the electric control damping air valve (31) and the secondary lock (32). After the electric control damping air valve (31) completes the opening degree adjustment according to the progressive debugging command output by the dynamic control module (4), the opening degree is locked through the secondary lock (32).

4. A high-precision temperature control air conditioning system according to claim 3, characterized in that: The dynamic control module (4) includes a fast execution module (41), a pressure gradient parameter correction module (42), a regulation variable input module (43), and a secondary execution module (44). The fast execution module (41) is signal-connected to the air valve actuator (33), the pressure gradient parameter correction module (42) is signal-connected to the static pressure sensor (21), the regulation variable input module (43) is signal-connected to the pressure gradient parameter correction module (42), the regulation variable input module (43) is signal-connected to the secondary execution module (44), and the secondary execution module (44) is signal-connected to the air valve actuator (33). The fast execution module (41) is used to set a primary temperature adjustment value according to the measured static pressure value at the starting point obtained by the static pressure sensor (21). After the static pressure sensor (21) continuously measures multiple measured static pressure values, the pressure gradient parameter correction module (42) corrects the multiple measured static pressure values to generate a secondary temperature adjustment value, and inputs the current secondary temperature adjustment value into the secondary execution module (44) through the regulation variable input module (43) for progressive debugging of the air conditioning temperature.

5. A high-precision temperature control air conditioning system according to claim 4, characterized in that: The secondary execution module (44) is signal-connected to the low difference adjustment coefficient processing module (5). The low difference adjustment coefficient processing module (5) is used to obtain the secondary temperature adjustment value input by the secondary execution module (44), calculate the difference percentage from the primary debugging value, and use the difference percentage obtained by the low difference adjustment coefficient processing module (5) as the correction coefficient for the primary temperature adjustment value subsequently sent by the fast execution module (41) to the air valve actuator (33) in the same temperature environment.

6. The high-precision temperature control air-conditioning system according to claim 5, characterized in that: The air valve actuator (33) is signal-connected to the opening sensor (22). When the opening sensor (22) determines that the current opening of the electronically controlled damping air valve (31) is not in line with the static pressure parameter obtained by the static pressure sensor (21), it sends a reset signal to the air valve actuator (33), and then controls the electronically controlled damping air valve (31) to reset through the air valve actuator (33) and re-correspond the opening adjustment to the current static pressure parameter value.

7. A control method for a high-precision temperature control air-conditioning system, the control method being applied to the high-precision temperature control air-conditioning system according to any one of claims 1-6, characterized in that, It includes the following steps: Step S1: After inputting the temperature regulation requirement value, obtain the measured static pressure values at the outlet of the fan, the middle section of the main air duct, and the end of the auxiliary air duct through the static pressure sensor (21); Step S2: Obtain the valve opening of the electronically controlled damping air valve (31) corresponding to the positions at the outlet of the fan, the middle section of the main air duct, and the end of the auxiliary air duct through the opening sensor (22), and determine whether the valve opening of the current electronically controlled damping air valve (31) reaches the corresponding measured static pressure. When it does not reach the corresponding measured static pressure, control the opening of the electronically controlled damping air valve (31) to reset through the air valve actuator (33) so that the current opening of the electronically controlled damping air valve (31) is in line with the corresponding opening required by the measured static pressure, that is, complete the initial start-up preparation work. Step S3. After the fast execution module (41) obtains the current input temperature control requirement, it first reads the preset static pressure value corresponding to the temperature control requirement, and takes the deviation between the measured point static pressure value obtained by the current static pressure sensor (21) and the preset static pressure value as the primary temperature adjustment value. Then, the fast execution module (41) sets the primary temperature adjustment value as the opening adjustment parameter, and the damper actuator (33) sends an opening adjustment command to the electronically controlled damping damper (31). At this time, the electronically controlled damping damper (31) adjusts the total air supply volume through the adjustment of the opening. After the total air volume is adjusted, the fan outlet, the middle section of the main air duct, and the end of the auxiliary air duct quickly reach the preset static pressure value to meet the temperature control requirement; Step S4. After the electronically controlled damping damper (31) completes the opening adjustment through the primary temperature adjustment value, the static pressure sensor (21) supplements the current real-time measured point static pressure value into the pressure gradient correction parameter module (42) every 10S. The pressure gradient correction parameter module (42) performs smooth correction on the supplemented multiple groups of static pressure measurement values, and then uses the corrected secondary temperature adjustment value as the progressive adjustment command to adjust the opening of the electronically controlled damping damper (31) through the secondary temperature adjustment value to perform smooth adjustment of the total air supply volume, so that the fan outlet, the middle section of the main air duct, and the end of the auxiliary air duct accurately reach the preset static pressure value, which is used to reduce the temperature control error and complete the smooth transition during low-latency temperature control to meet the temperature control requirement; Step S5. After the temperature adjustment is completed, the low-difference adjustment coefficient processing module (5) reads the smoothly corrected secondary temperature adjustment value and replaces it with the primary temperature adjustment value for subsequent temperature control to optimize the smoothness during subsequent initial temperature adjustment.

8. The control method of a high-precision temperature-controlled air-conditioning system according to claim 7, characterized in that, The processing steps for the pressure gradient correction parameter module (42) to perform smooth correction on the supplemented multiple groups of static pressure measurement values include: Step S1: Obtain the static pressure values monitored by three groups of static pressure sensors (21) respectively arranged at the fan outlet, the middle section of the main air duct, and the end of the auxiliary air duct, and set the three groups of static pressure values as the fan outlet value , the value at the middle section of the main air duct , the value at the end of the auxiliary air duct ; Step S2: Set the monitoring and acquisition interval of the static pressure value to 10 s and the acquisition period to 1 min, that is, obtain the value at the fan outlet , the value in the middle section of the main air duct , the value at the end of the auxiliary air duct ; Step S3. Obtain weights based on the proportion of the influence of the valve opening of the electronically controlled damping air valves (31) distributed at the fan outlet, the middle section of the main air duct, and the end of the auxiliary air duct on the static pressure value of the air duct resistance, including the fan outlet coefficient , the coefficient of the middle section of the main air duct and the coefficient c of the end of the auxiliary air duct; Step S4. Substitute the collected value in Step S2 and the weight coefficient obtained in Step S3 into the following formula as the corrected secondary temperature adjustment value: 。

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