A high-precision temperature control air conditioning system and control method

Abstract

The present invention relates to the field of air conditioning technology, and specifically to a high-precision temperature-controlled air-conditioning system and a control method, comprising a main unit, wherein a multi-measurement-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 provided at one end of the multi-measurement-point dynamic detection module and the pressure oscillation suppression module; the static pressure value of the wind direction flow measuring point of the pressure oscillation suppression module is obtained through the multi-measurement-point dynamic detection module, and is set as a primary temperature adjustment value and a secondary temperature adjustment value, and then a progressive debugging command can be set according to the measuring point parameters. Under the temperature control state, all electrically controlled damping air valves are uniformly adjusted to the corresponding opening of the parameter according to the primary temperature adjustment value parameter. Thereafter, during the debugging process, a smooth correction is performed by adding multiple sets of static pressure measurement values ​​and the secondary temperature adjustment value is obtained. The corrected secondary temperature adjustment value is used as a progressive debugging command to stabilize the temperature debugging change curve.

Description

Technical Field

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

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

[0003] A drawback of traditional fixed temperature control systems is that, since the air volume supplied by the air conditioning equipment is fixed after treatment, to maintain the indoor temperature within the required range, when the indoor load fluctuates, the air volume entering the room is still calculated based on the maximum load. This fixed air volume can lead to overcooling of the room, forcing the cooled air to be reheated. VAV air conditioning systems, however, overcome these shortcomings by varying the air volume supplied in response to changes in indoor cooling and heating loads through variable static pressure control.

[0004] However, the problem with the above-mentioned variable air volume air conditioning system is that when only a single measuring point is set to obtain static pressure data, the static pressure data is easily disturbed by local pressure oscillations and error data interference during 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 duct, due to individual differences in the static pressure data of each measuring point, the direct temperature control method of independently adjusting each duct to the required static pressure value is prone to large curve changes in the temperature control parameters output by each duct, resulting in a debugging temperature difference in each duct, and the temperature change transition is not smooth enough, resulting in a decrease in comfort. Summary of the Invention

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

[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, wherein 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 provided at one end of the multi-measuring point dynamic detection module and the pressure oscillation suppression module. The multi-measuring 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-measuring point dynamic detection module is provided at the wind direction flow measurement point of the pressure oscillation suppression module to obtain the static pressure value of 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 based on the measurement point parameters obtained by the multi-measuring point dynamic detection module to stabilize the temperature debugging change curve. A low-difference adjustment coefficient processing module is provided at one end of the dynamic control module. The low-difference adjustment coefficient processing module is used to generate an initial debugging value for subsequent startup under the same temperature environment based on the progressive debugging command output by the dynamic control module.

[0007] Preferably, the multi-measurement point dynamic detection module includes a static pressure sensor and an opening sensor, and the static pressure sensor and the opening sensor are both arranged at the installation position of the pressure oscillation suppression module. The opening sensor is used to determine whether the current opening 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 electrically controlled damping air valve, a secondary lock and an air valve actuator. The electrically controlled 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 electrically controlled damping air valve. The air valve actuator is connected to the electrically controlled damping air valve and the secondary lock signal. After the electrically controlled damping air valve completes the opening adjustment according to the progressive debugging command output by the dynamic control module, the opening is locked through the secondary lock.

[0009] Preferably, the dynamic control module includes a fast execution module, a pressure gradient parameter correction module, a control variable entry module and a secondary execution module. The fast execution module is connected to the air valve actuator signal, the pressure gradient parameter correction module is connected to the static pressure sensor signal, the control variable entry module is connected to the pressure gradient parameter correction module signal, the control variable entry module is connected to the secondary execution module signal, and the secondary execution module is connected to the air valve actuator signal. The fast execution module is used to set a primary temperature adjustment value according to the static pressure value of the measuring point initially obtained by the static pressure sensor. After the static pressure sensor continuously measures the static pressure values ​​of multiple measuring points, the pressure gradient parameter correction module corrects the static pressure values ​​of multiple measuring points to generate a secondary temperature adjustment value, and enters the current secondary temperature adjustment value into the secondary execution module through the control variable entry 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, and the low-difference adjustment coefficient processing module is used to obtain the secondary temperature adjustment value entered by the secondary execution module and calculate the difference percentage with the primary debugging value. The difference percentage obtained by the low-difference adjustment coefficient processing module is used as the correction coefficient of the primary temperature adjustment value subsequently sent by the fast execution module to the air valve actuator under the same temperature environment.

[0011] Preferably, the air valve actuator is connected to the opening sensor signal. When the opening sensor determines that the current opening of the electrically controlled damping air valve is inconsistent with the static pressure parameter obtained by the static pressure sensor, a reset signal is sent to the air valve actuator, and then the air valve actuator controls the electrically controlled damping air valve to reset and re-adjust the opening to correspond to the current static pressure parameter value.

[0012] In another aspect, the present invention provides a method for controlling a high-precision temperature-control air-conditioning system, comprising the following steps:

[0013] Step S1: After inputting the temperature control requirement value, the static pressure values ​​of the measuring points at the fan outlet, the middle section of the main air duct, and the end of the auxiliary air duct are obtained through the static pressure sensor;

[0014] Step S2: The valve opening of the electrically controlled damping air valve corresponding to the fan outlet, the middle section of the main air duct, and the end of the auxiliary air duct is obtained by the opening sensor, and whether the current valve opening of the electrically controlled damping air valve reaches the corresponding static pressure of the measuring point is measured. If the static pressure of the measuring point is not reached, the valve actuator is used to control the opening of the electrically controlled damping air valve to be reset, so that the current opening of the electrically controlled damping air valve is consistent with the corresponding opening required by the static pressure of the measuring point, thus completing the initial startup preparation work;

[0015] Step S3: After the fast execution module obtains the currently input temperature control demand, it first reads the preset static pressure value corresponding to the temperature control demand, and uses the deviation between the static pressure value of the measuring point obtained by the current static pressure sensor and the preset static pressure value as the primary temperature adjustment value. The primary temperature adjustment value is then set as the opening adjustment parameter by the fast execution module, and the air valve actuator sends an opening adjustment command to the electronically controlled damping air valve. At this time, the electronically controlled damping air valve adjusts the total air supply volume through opening adjustment. 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, thereby meeting the temperature control demand;

[0016] Step S4: After the electronically controlled damping air valve completes the opening adjustment through the primary temperature adjustment value, the static pressure sensor adds the current real-time static pressure value of the measuring point to the pressure gradient correction module at intervals S. The pressure gradient correction module steadily corrects the added multiple sets of static pressure measurement values, and then uses the corrected secondary temperature adjustment value as a progressive adjustment command. The opening of the electronically controlled damping air valve is adjusted through the secondary temperature adjustment value to smoothly adjust 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, so as to reduce the temperature control error and complete the smooth transition during low-latency temperature control to meet the temperature control requirements;

[0017] Step S5: After the temperature adjustment is completed, the low-difference adjustment coefficient processing module reads the stable and corrected secondary temperature adjustment value and replaces it with the primary temperature adjustment value during subsequent temperature adjustment to optimize the stability of the subsequent initial temperature adjustment.

[0018] Preferably, the pressure gradient correction module performs a processing step of smoothly correcting the added multiple sets of static pressure measurement values, including:

[0019] Step S1: Obtain the static pressure values ​​monitored by three sets of static pressure sensors 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 sets of static pressure values ​​as the fan outlet values. , the middle section value of the main air duct , auxiliary air duct end value ;

[0020] Step S2: Set the static pressure monitoring and collection interval to 10s and the collection period to 1min, that is, obtain the fan outlet value , the middle section value of the main air duct , auxiliary air duct end value ;

[0021] Step S3: Obtain weights based on the influence of the opening of the electronically controlled damping air valves at the fan outlet, the middle section of the main air duct, and the end of the auxiliary air duct on the duct resistance of the static pressure value, including the fan outlet coefficient. , Main duct middle section coefficient and the secondary duct terminal coefficient c;

[0022] Step S4: Substitute the collected value in step S and the weight coefficient obtained in step S into the following formula as the corrected secondary temperature adjustment value:

[0023] .

[0024] Compared with the prior art, the beneficial effects of the present invention are as follows: the static pressure value of the wind direction flow measuring point of the pressure oscillation suppression module is obtained through a multi-measuring point dynamic detection module, and is set as a primary temperature adjustment value and a secondary temperature adjustment value, and then a progressive debugging command can be set according to the measuring point parameters. In the temperature control state, all the electrically controlled damping air valves are uniformly adjusted to the corresponding opening of the parameter according to the primary temperature adjustment value parameter. Then, during the debugging process, a smooth correction is performed by adding multiple sets of static pressure measurement values ​​and the secondary temperature adjustment value is obtained. By using the corrected secondary temperature adjustment value as a progressive debugging command, the temperature debugging change curve is stabilized. Compared with the fixed air volume debugging method, a smooth transition during temperature control can be achieved with low latency to meet 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 the parameters are corrected, the temperature control error can be reduced and the comfort during temperature adjustment can be improved by synchronously performing progressive debugging to the secondary temperature adjustment value while the primary temperature adjustment is in progress. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention will be further described below with reference to the accompanying drawings and examples.

[0026] Figure 1 It is a system composition diagram of the present invention;

[0027] Figure 2 A diagram of a variable air volume control system according to the present invention;

[0028] Figure 3 This is a diagram of the existing variable air volume control system.

[0029] In the figure: 1. Main unit; 2. Multi-measurement point dynamic detection module; 21. Static pressure sensor; 22. Opening sensor; 3. Pressure oscillation suppression module; 31. Electric damping air valve; 32. Secondary lock; 33. Air valve actuator; 4. Dynamic control module; 41. Fast execution module; 42. Pressure gradient correction module; 43. Control variable entry module; 44. Secondary execution module; 5. Low difference adjustment coefficient processing module. DETAILED DESCRIPTION

[0030] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0031] like Figure 1-Figure 3As shown, a high-precision temperature control air-conditioning system and control method described in the present invention include a main unit 1, a multi-measuring point dynamic detection module 2 and a pressure oscillation suppression module 3 are installed at the air inlet end of the main unit 1, and a dynamic control module 4 is provided at one end of the multi-measuring point dynamic detection module 2 and the pressure oscillation suppression module 3. The multi-measuring 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-measuring point dynamic detection module 2 is set at the wind direction flow measurement point of the pressure oscillation suppression module 3 to obtain the static pressure value of the wind direction flow measurement point of the pressure oscillation suppression module 3 and the opening 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-measuring point dynamic detection module 2 to stabilize the temperature debugging change curve. A low-difference adjustment coefficient processing module 5 is provided at one end of the dynamic control module 4. The low-difference adjustment coefficient processing module 5 is used to generate an initial debugging value for subsequent startup under the same temperature environment according to the progressive debugging command output by the dynamic control module 4.

[0032] In this embodiment, in order to solve the problem that when a traditional variable air volume air conditioning system sets multiple measuring points 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 adjusting each air duct to the required static pressure value is prone to cause large curve changes in the temperature control parameters output by each air duct, resulting in a debugging temperature difference in each air duct and an insufficiently smooth temperature change transition, the present invention proposes a high-precision temperature control air conditioning system, which solves this technical problem by setting a multi-measuring 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.

[0033] In an optional implementation of this embodiment, the multi-measuring point dynamic detection module 2 includes a static pressure sensor 21 and an opening sensor 22. The static pressure sensor 21 and the opening sensor 22 are both arranged at the installation position of the pressure oscillation suppression module 3. The opening sensor 22 is used to determine whether the current opening of the pressure oscillation suppression module 3 corresponds to the static pressure parameter obtained by the static pressure sensor 21.

[0034] In this embodiment, the opening 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, and is used to detect the opening of the electronically controlled damping air valve 31. Since there is a necessary relationship between the flow static pressure and the opening, the larger the opening, the greater the air output, and the smaller the opening, the smaller the flow static pressure. Before the actual measurement, it is necessary to measure the comparison value of the valve opening and the flow static pressure. Since the calculation method of the valve opening and the flow static pressure comparison value is a well-known technical means, its calculation principle will not be repeated in this scheme.

[0035] In an optional implementation of this embodiment, the pressure oscillation suppression module 3 includes an electrically controlled damping air valve 31, a secondary lock 32, and an air valve actuator 33. The electrically controlled 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 port of the electrically controlled damping air valve 31. The air valve actuator 33 is connected to the electrically controlled damping air valve 31 and the secondary lock 32 by signal. After the electrically 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 lock 32. Figure 2 , the pressure oscillation suppression module 3 is set to three groups, corresponding to the positions S1, S2 and S3 in the figure respectively.

[0036] In this embodiment, the selection of the electrically controlled damping air valve 31 can reduce pressure oscillations when debugging the valve opening size compared to the transmission electric valve. The electrically controlled damping air valve 31 dynamically adjusts the valve opening through the static pressure signal fed back by the air valve actuator 33, and after the opening adjustment is completed, a secondary locker 32 is set to lock the electrically controlled damping air valve 31 after adjusting the opening, so as to maintain the stability of the opening of the electrically controlled damping air valve 31 during the temperature adjustment cycle.

[0037] In an optional implementation of this embodiment, the dynamic control module 4 includes a fast execution module 41, a pressure gradient parameter correction module 42, a control variable entry 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 entry module 43 is signal-connected to the pressure gradient parameter correction module 42, the control variable entry 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 based on the static pressure value of the measuring point initially obtained by the static pressure sensor 21. After the static pressure sensor 21 continuously measures the static pressure values ​​of multiple measuring points, the pressure gradient parameter correction module 42 corrects the static pressure values ​​of the multiple measuring points to generate a secondary temperature adjustment value, and enters the current secondary temperature adjustment value into the secondary execution module 44 through the control variable entry module 43 for progressive debugging of the air conditioning temperature.

[0038] In this embodiment, the pressure gradient parameter correction module 42 uses a single-chip microcomputer, and the secondary temperature adjustment value is corrected and calculated by the pressure gradient parameter correction module 42, so that the valve opening of each electrically controlled damping air valve 31 is synchronously adjusted according to the static pressure value debugging parameter output by the secondary temperature adjustment value, thereby avoiding temperature differences between the electrically controlled damping air valves 31 during debugging.

[0039] In an optional 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 entered by the secondary execution module 44, and calculate the difference percentage with the primary debugging value. The difference percentage obtained by the low-difference adjustment coefficient processing module 5 is used as the correction coefficient of the primary temperature adjustment value subsequently sent by the fast execution module 41 to the air valve actuator 33 under the same temperature environment.

[0040] 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 enters the secondary temperature adjustment value, the microprocessor in the low-difference adjustment coefficient processing module 5 obtains the secondary temperature adjustment value entered by the secondary execution module 44 and calculates the percentage of difference with the primary adjustment value. After the calculation is completed, it is synchronously entered into the data storage unit in combination with the current room temperature data obtained by the temperature sensor. When the temperature is subsequently adjusted under the same temperature environment indoors, the percentage of difference between the secondary temperature adjustment value entered into the data storage unit and the primary adjustment value of the same period is used as the updated primary temperature adjustment value, that is, when the primary temperature adjustment value is generated again subsequently, the difference percentage is directly used as the increase in the static pressure value.

[0041] In an optional implementation of this embodiment, the air valve actuator 33 is connected to the opening sensor 22 signal. When the opening sensor 22 determines that the current opening of the electrically controlled damping air valve 31 is inconsistent with the static pressure parameter obtained by the static pressure sensor 21, a reset signal is sent to the air valve actuator 33, and then the air valve actuator 33 controls the electrically controlled damping air valve 31 to reset and re-adjust the opening to correspond to the current static pressure parameter value.

[0042] In this embodiment, the purpose of resetting the electrically controlled damping air valve 31 and re-adjusting the opening to correspond to the current static pressure parameter value is to confirm whether the mismatch between the current static pressure parameter value and the opening is caused by a mechanical failure. If there is still no correspondence after resetting, the main unit 1 sends a fault code to the system end to remind manual maintenance of the electrically controlled damping air valve 31.

[0043] In an optional implementation of this embodiment, a control method for a high-precision temperature control air conditioning system includes the following steps:

[0044] Step S1: After inputting the temperature control requirement value into the host group 1, the static pressure values ​​of the measuring points at the fan outlet, the middle section of the main air duct, and the end of the auxiliary air duct are obtained through the static pressure sensor 21;

[0045] Step S2: The valve opening of the electrically controlled damping air valve 31 corresponding to the fan outlet, the middle section of the main air duct, and the end of the auxiliary air duct is obtained by the opening sensor 22, and whether the current valve opening of the electrically controlled damping air valve 31 reaches the corresponding static pressure of the measuring point is measured. If the static pressure of the measuring point is not reached, the opening of the electrically controlled damping air valve 31 is reset by the air valve actuator 33 so that the current opening of the electrically controlled damping air valve 31 matches the opening corresponding to the static pressure requirement of the measuring point, thus completing the preparation work before the initial start of the temperature control;

[0046] In step S3, after the fast execution module 41 obtains the currently input temperature control demand, it first reads the preset static pressure value corresponding to the temperature control demand, and uses the deviation between the static pressure value of the measuring point obtained by the current static pressure sensor 21 and the preset static pressure value as the primary temperature adjustment value. The primary temperature adjustment value is then set as the opening adjustment parameter by the fast execution module 41, and the air valve actuator 33 sends an opening 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 opening adjustment. 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, thereby meeting the temperature control demand;

[0047] In step S4, after the electronically controlled damping air valve 31 completes the opening adjustment through the primary temperature adjustment value, the static pressure sensor 21 feeds the current real-time static pressure value of the measuring point into the pressure gradient parameter correction module 42 at intervals of 10 seconds. The pressure gradient parameter correction module 42 performs a smooth correction on the multiple sets of static pressure measurement values ​​that have been fed in. After that, the corrected secondary temperature adjustment value is used as a progressive debugging command. At this time, the air valve actuator 33 adjusts the opening of the electronically controlled damping air valve 31 through the secondary temperature adjustment value to smoothly adjust 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, thereby reducing the temperature control error and completing a smooth transition during low-latency temperature control to meet the temperature control requirements.

[0048] Step S5: After the temperature adjustment is completed, the low-difference adjustment coefficient processing module 5 reads the stable and corrected secondary temperature adjustment value and replaces it with the primary temperature adjustment value during subsequent temperature adjustment to optimize the stability of the subsequent initial temperature adjustment.

[0049] The pressure gradient correction module 42 performs smooth correction on the multiple sets of static pressure measurement values ​​added, including the following steps:

[0050] Step S1: Obtain the static pressure values ​​monitored by the three sets of static pressure sensors 21 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 sets of static pressure values ​​as the fan outlet values. , the middle section value of the main air duct , auxiliary air duct end value ;

[0051] Step S2: Set the static pressure monitoring and collection interval to 10s and the collection period to 1min, that is, obtain the fan outlet value , the middle section value of the main air duct , auxiliary air duct end value ;

[0052] Step S3: Obtain weights based on the influence of the opening of the electric damping valve 31 on the static pressure value, including the fan outlet coefficient , Main duct middle section coefficient and the secondary duct terminal coefficient c;

[0053] Step S4: Substitute the collected value in step S2 and the weight coefficient obtained in step S3 into the following formula to obtain the corrected secondary temperature adjustment value:

[0054] .

[0055] In this embodiment, during the debugging process, multiple sets of static pressure measurement values ​​are added to correct the secondary temperature adjustment value, and then after the corrected secondary temperature adjustment value is used as a 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 during temperature control with low latency, thereby meeting 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 the parameters are corrected, the progressive debugging to the secondary temperature adjustment value is performed synchronously while the primary temperature adjustment is in progress, the temperature control error can be reduced and the comfort during temperature adjustment can be improved.

[0056] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above-described embodiments. The above-described embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-precision temperature control air conditioning system, comprising a host unit (1), characterized in that: The main unit (1) is equipped with a multi-measurement point dynamic detection module (2) and a pressure oscillation suppression module (3) at the air inlet end. The multi-measurement point dynamic detection module (2) and the pressure oscillation suppression module (3) are provided with a dynamic control module (4) at one end. The multi-measurement point dynamic detection module (2) and the pressure oscillation suppression module (3) are both connected to the dynamic control module (4) by signal. 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-measurement point dynamic detection module (2) is provided at the wind direction flow measurement point of the pressure oscillation suppression module (3) to obtain the static pressure value of the wind direction 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) is configured to control the wind direction flow measurement point of the pressure oscillation suppression module (3) according to the multi-measurement point. The measurement point parameters obtained by the dynamic detection module (2) are used to set a progressive debugging command for stabilizing the temperature debugging change curve. A low-difference adjustment coefficient processing module (5) is provided at one end of the dynamic control module (4). The low-difference adjustment coefficient processing module (5) is used to generate an initial debugging value when starting in the same temperature environment in the subsequent process according to the progressive debugging command output by the dynamic control module (4). The multi-measurement point dynamic detection module (2) includes a static pressure sensor (21) and an opening sensor (22). The static pressure sensor (21) and the opening sensor (22) are both provided at the installation position of the pressure oscillation suppression module (3). The opening sensor (22) is used to determine whether the current opening of the pressure oscillation suppression module (3) corresponds to the static pressure parameter obtained by the static pressure sensor (21). The pressure oscillation suppression module (3) includes an electrically controlled damping air valve (31), a secondary lock (32) and an air valve actuator (33). The electrically controlled 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 port of the electrically controlled damping air valve (31). The air valve actuator (33) is connected to the electrically controlled damping air valve (31) and the secondary lock (32) by signal. After the electrically controlled damping air valve (31) completes opening adjustment according to the progressive debugging command output by the dynamic control module (4), the opening is locked by the secondary lock (32). 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), wherein the fast execution module (41) is connected to the air valve actuator (33) by signal, the pressure gradient parameter correction module (42) is connected to the static pressure sensor (21) by signal, the control variable input module (43) is connected to the pressure gradient parameter correction module (42) by signal, and the control variable input module (43) is connected to the secondary execution module (44) by signal. The secondary execution module (44) is connected to the air valve actuator (33) by signal, and the fast execution module (41) is used to set a primary temperature adjustment value according to the static pressure value of the measuring point initially obtained by the static pressure sensor (21). After the static pressure sensor (21) continuously measures the static pressure values ​​of multiple measuring points, the pressure gradient correction module (42) corrects the static pressure values ​​of the multiple measuring points to generate a secondary temperature adjustment value, and enters the current secondary temperature adjustment value into the secondary execution module (44) through the control variable input module (43) for progressive debugging of the air conditioning temperature.

2. A high-precision temperature control air conditioning system according to claim 1, characterized in that: The secondary execution module (44) is connected to the low difference adjustment coefficient processing module (5) by signal. The low difference adjustment coefficient processing module (5) is used to obtain the secondary temperature adjustment value entered by the secondary execution module (44) and calculate the difference percentage with the primary adjustment value. The difference percentage obtained by the low difference adjustment coefficient processing module (5) is used as a correction coefficient for the primary temperature adjustment value subsequently sent by the fast execution module (41) to the air valve actuator (33) under the same temperature environment.

3. A high-precision temperature control air conditioning system according to claim 2, characterized in that: The air valve actuator (33) is connected to the opening sensor (22) by signal. When the opening sensor (22) determines that the current opening of the electrically controlled damping air valve (31) is inconsistent with the static pressure parameter obtained by the static pressure sensor (21), a reset signal is sent to the air valve actuator (33), and then the air valve actuator (33) controls the electrically controlled damping air valve (31) to reset and re-adjust the opening to correspond to the current static pressure parameter value.

4. 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 to 3, characterized in that: The following steps are involved: Step S1: After inputting the temperature control requirement value, the static pressure values ​​of the measuring points at the fan outlet, the middle section of the main air duct, and the end of the auxiliary air duct are obtained through the static pressure sensor (21); Step S2, obtaining the valve opening of the electrically controlled damping air valve (31) correspondingly provided at the fan outlet, the middle section of the main air duct, and the end of the auxiliary air duct by the opening sensor (22), and determining whether the current valve opening of the electrically controlled damping air valve (31) reaches the corresponding measuring point static pressure. If the corresponding measuring point static pressure is not reached, the opening of the electrically controlled damping air valve (31) is controlled to be reset by the air valve actuator (33), so that the current opening of the electrically controlled damping air valve (31) is consistent with the corresponding opening required by the measuring point static pressure, thus completing the initial startup preparation work; Step S3, after the fast execution module (41) obtains the currently input temperature control demand, it first reads the preset static pressure value corresponding to the temperature control demand, and uses the deviation between the static pressure value of the measuring point obtained by the current static pressure sensor (21) and the preset static pressure value as a primary temperature adjustment value. Then, the primary temperature adjustment value is set as the opening adjustment parameter by the fast execution module (41), and the air valve actuator (33) sends an opening adjustment command to the electric control damping air valve (31). At this time, the electric control damping air valve (31) adjusts the total air supply volume through the opening adjustment. 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, thereby achieving the temperature control demand; Step S4, after the electric-controlled damping air valve (31) completes the opening adjustment through the primary temperature adjustment value, the static pressure sensor (21) adds the current real-time measuring point static pressure value to the pressure gradient correction module (42) at intervals of 10 seconds, and the pressure gradient correction module (42) smoothly corrects the added multiple sets of static pressure measurement values, and then uses the corrected secondary temperature adjustment value as a progressive debugging command to adjust the opening of the electric-controlled damping air valve (31) through the secondary temperature adjustment value, and smoothly adjust 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 requirements; Step S5: After the temperature adjustment is completed, the low-difference adjustment coefficient processing module (5) reads the stable and corrected secondary temperature adjustment value and replaces it with the primary temperature adjustment value during subsequent temperature adjustment to optimize the stability of the subsequent initial temperature adjustment.

5. The control method of a high-precision temperature control air conditioning system according to claim 4, characterized in that: The pressure gradient parameter correction module (42) performs a processing step of smoothly correcting the multiple sets of static pressure measurement values ​​added in, including: Step S1, obtain the static pressure values ​​monitored by three sets of static pressure sensors (21) 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 sets of static pressure values ​​as the fan outlet values , the middle section value of the main air duct , auxiliary air duct end value ; Step S2: Set the static pressure monitoring and collection interval to 10s and the collection period to 1min, that is, obtain the fan outlet value , the middle section value of the main air duct , auxiliary air duct end value ; Step S3, according to the proportion of the air duct resistance influence of the valve opening of the electric control 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, the weight is obtained, including the fan outlet coefficient , Main duct middle section coefficient and the secondary duct terminal coefficient c; Step S4: Substitute the collected value in step S2 and the weight coefficient obtained in step S3 into the following formula to obtain the corrected secondary temperature adjustment value: 。

Images