CN109974255B - Low-temperature air conditioner control system and control method - Google Patents
Low-temperature air conditioner control system and control method Download PDFInfo
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- CN109974255B CN109974255B CN201910264284.8A CN201910264284A CN109974255B CN 109974255 B CN109974255 B CN 109974255B CN 201910264284 A CN201910264284 A CN 201910264284A CN 109974255 B CN109974255 B CN 109974255B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/89—Arrangement or mounting of control or safety devices
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Abstract
The invention relates to a low-temperature air conditioner control system and a control method, which apply an automation technology, carry out stepped cooling through a multi-stage surface cooling section, monitor the working state of a surface cooling section compressor in real time through a communication module, control the output of each stage of surface cooling according to a temperature sensor behind the surface cooling section, gradually cool the temperature of inlet air to below 0 ℃, send the inlet air out through a blower, introduce an air brake action control device, carry out automatic air brake control aiming at the frosting condition, realize intelligent defrosting operation while keeping the air supply at the temperature below 0 ℃ through the switching among a plurality of air brakes, and ensure the stability of the operation of an air conditioner.
Description
Technical Field
The invention relates to a low-temperature air conditioner control system and a control method, and belongs to the technical field of heating and ventilation automatic control.
Background
The central air-conditioning system is used as an important component of a building system and is widely applied to hospitals, biology, electronics, medicine, hotels, markets and the like. Along with the high-speed development of Chinese economy, the demand of various industries on central air conditioners is higher and higher, particularly the precision manufacturing industry, wherein the storage environment of special process processing materials is higher and higher in the intelligent manufacturing field of chips, liquid crystal circuit boards and the like, and due to the characteristics of high temperature, flammability, explosiveness and volatile toxic gases, a central air conditioner unit needs to ensure that the air supply temperature is always stabilized below 0 ℃ while fresh air is introduced into the material storage period to be completely delivered and exhausted. The conventional process air conditioner designed by the existing domestic manufacturers generally has the air supply temperature of more than 16 ℃, if the air supply temperature needs to be reduced to be lower than 0 ℃, the air conditioner is not only simple in increasing the refrigerating capacity of the surface cooling section, but also needs to consider the problems of air supply temperature rise and the like caused by defrosting of the compressor of the surface cooling section and the surface cooling coil defrosting unit below 0 ℃, and the problems also become a barrier for hindering the development of the domestic chip processing and manufacturing industry.
Disclosure of Invention
The invention aims to solve the technical problem of providing a low-temperature air conditioner control system, which reduces the temperature of air supply to below zero by stepwise cooling through a multi-stage surface cooling section, realizes frosting judgment based on real-time monitoring and ensures the stability of air conditioner operation.
The invention adopts the following technical scheme for solving the technical problems: the invention designs a low-temperature air conditioner control system, which is used for controlling an air conditioner to realize air supply at the temperature below 0 ℃, and comprises a control module, a communication module, an air feeder arranged in the air conditioner, at least one stage of temperature control refrigerating device and at least one group of air brake action control devices, wherein the air feeder is connected with the control module;
the control module is connected with the communication module, each level of temperature control refrigerating device respectively comprises a surface cooling section and a temperature sensor, and the surface cooling section and the temperature sensor in each level of temperature control refrigerating device are respectively butted with the control module; the surface cooling sections in each stage of temperature control refrigerating device are sequentially arranged in the air conditioner and between the air inlet and the air outlet in sequence and are used for controlling the air outlet of the air conditioner to output air with the temperature below 0 ℃; the temperature sensors in the temperature control and refrigeration devices at all levels are respectively arranged on one side of the corresponding surface cold section facing the air outlet of the air conditioner; the air feeder is arranged in the air conditioner at a position corresponding to the air outlet, the air inlet of the air feeder faces the air inlet of the air conditioner, and the air outlet of the air feeder faces the air outlet of the air conditioner; the control module is communicated with an air conditioner internal sensor through the communication module and is used for respectively realizing state monitoring aiming at compressors of a surface cooling section in each stage of temperature control refrigerating device;
the number of groups of the air brake action control devices does not exceed the number of the temperature-controlled refrigerating devices, one group of the air brake action control devices corresponds to the last stage of temperature-controlled refrigerating device in the air conditioner in the direction from the air inlet to the air outlet, and the rest air brake action control devices correspond to the single-stage temperature-controlled refrigerating devices one by one; each group of air brake action control devices are respectively arranged on one side of a middle cooling section in the corresponding temperature control refrigerating device, each group of air brake action control devices respectively comprises at least two closed multi-blade adjusting devices, all closed multi-blade adjusting devices in each group of air brake action control devices are arranged on the corresponding side of the middle cooling section in the corresponding temperature control refrigerating device in a covering mode, each closed multi-blade adjusting device respectively comprises a split closed multi-blade adjusting valve and a quick air valve actuator which are mutually butted, a control module is respectively butted with the quick air valve actuator in each closed multi-blade adjusting device, and the control module is used for controlling the corresponding split closed multi-blade adjusting valve through controlling the quick air valve actuator.
As a preferred technical scheme of the invention: the number of the temperature control refrigerating devices is equal to the number of the temperature control refrigerating devices required by the air conditioner for supplying air at the temperature below 0 ℃ aiming at the highest temperature of the area.
As a preferred technical scheme of the invention: and the air brake action control devices are respectively arranged on the middle cooling section of the corresponding temperature-control refrigerating device and on one side facing the air inlet of the air conditioner.
As a preferred technical scheme of the invention: each group of air brake action control devices respectively comprise three closed multi-blade adjusting devices, namely an upper closed multi-blade adjusting device, a middle closed multi-blade adjusting device and a lower closed multi-blade adjusting device, and the three closed multi-blade adjusting devices in each group of air brake action control devices are respectively arranged at the upper position, the middle position and the lower position of the corresponding side of the middle cooling section in the corresponding temperature control refrigerating device.
As a preferred technical scheme of the invention: the air conditioner comprises an air conditioner, a temperature control refrigerating device, a first-stage temperature control refrigerating device, a second-stage temperature control refrigerating device and a third-stage temperature control refrigerating device, wherein the three temperature control refrigerating devices are arranged in the air conditioner, namely the air conditioner is internally provided with the air conditioner and points to the direction of an air outlet from an air inlet; the air brake action control devices are in a group and correspond to the last stage of temperature control refrigerating device in the air conditioner in the direction from the air inlet to the air outlet.
In view of the above, the technical problem to be solved by the present invention is to provide a control method based on a low temperature air conditioner control system, which performs stepped cooling through a multi-stage surface cooling section to reduce the temperature of the supplied air to below zero, and realizes frosting judgment based on real-time monitoring to ensure the stability of the air conditioner operation.
The invention adopts the following technical scheme for solving the technical problems: the invention designs a control method based on a low-temperature air conditioner control system, which comprises the following steps:
step A, calculating the quantity M of the temperature-controlled refrigerating devices required for realizing air supply at the temperature below 0 ℃ and the cooling design requirements corresponding to the surface cooling sections of the required temperature-controlled refrigerating devices according to the temperature of the air inlet of the air conditioner, and entering step B;
b, selecting M temperature-control refrigerating devices from all the temperature-control refrigerating devices as working temperature-control refrigerating devices at all levels, and enabling air brake action control devices corresponding to the working temperature-control refrigerating devices to exist on the last working temperature-control refrigerating device in the direction from an air inlet to an air outlet in the air conditioner, and then entering the step C;
step C, aiming at all the other working temperature-control refrigeration devices except the last working temperature-control refrigeration device, if corresponding air brake action control devices exist, controlling the open type closed multi-leaf regulating valves to be opened through a quick air valve actuator aiming at all the closed multi-leaf regulating devices in each group of air brake action control devices;
aiming at the air brake action control devices corresponding to the last-stage working temperature-control refrigerating device, controlling the split type closed multi-blade regulating valves to be opened by a quick air valve actuator for at least one closed multi-blade regulating device, and controlling the split type closed multi-blade regulating valves to be closed by the quick air valve actuator for the other closed multi-blade regulating devices, wherein the number of the closed multi-blade regulating devices corresponding to the split type closed multi-blade regulating valves in the closed state is at least one, and then entering the step D;
step D, aiming at the other working temperature-control refrigeration devices at all levels except the last working temperature-control refrigeration device, controlling the compressors on the surface cooling sections of the working temperature-control refrigeration devices at all levels to work according to the cooling design requirements;
meanwhile, aiming at the last stage working temperature control refrigerating device, the setting position of the split type closed multi-blade regulating valve in the closed state and the compressor on the corresponding last stage working temperature control refrigerating device are controlled not to work, and the setting position of the split type closed multi-blade regulating valve in the open state and the compressor on the corresponding last stage working temperature control refrigerating device are controlled to work;
thus, the air supply at the temperature below 0 ℃ is realized by combining the work of the air supply machine.
As a preferred technical scheme of the invention: after the step D, the method also comprises the following steps, and after the step D is executed, the step E is executed;
step E, judging whether the positions of the split closed multi-leaf regulating valves exist or not and whether the surface of a coil pipe on the corresponding last-stage working temperature-control refrigerating device has a frosting state meeting the preset severity or not aiming at the split closed multi-leaf regulating valves in the opening states corresponding to the last-stage working temperature-control refrigerating device, and if yes, entering the step F; otherwise, no operation is performed;
and F, respectively executing the following operations aiming at the split closed multi-blade regulating valve which meets each opening state corresponding to the position of the coil pipe in the preset severity frosting state:
firstly, selecting one of the two-piece open type closed multi-blade regulating valve in a closed state, controlling the position of the two-piece open type closed multi-blade regulating valve and the work of a compressor on the corresponding last-stage working temperature control refrigerating device, and then controlling the two-piece open type closed multi-blade regulating valve to be opened through a quick air valve actuator of the two-piece open type closed multi-blade regulating valve in the closed state;
meanwhile, aiming at the split type closed multi-blade regulating valve which meets the opening state corresponding to the position of the coil pipe in the frosting state with preset severity, the split type closed multi-blade regulating valve is controlled to be closed through the quick air valve actuator, and the position of the split type closed multi-blade regulating valve and the compressor on the corresponding last-stage working temperature-control refrigerating device are controlled to be defrosted and are in a standby state.
As a preferred technical scheme of the invention: based on that each group of air brake action control devices respectively comprises an upper closed multi-blade adjusting device, a middle closed multi-blade adjusting device and a lower closed multi-blade adjusting device, three closed multi-blade adjusting devices in each group of air brake action control devices are respectively arranged at the upper, middle and lower positions of the corresponding side of the middle cooling section in the corresponding temperature control refrigerating device;
in the step C, aiming at the air brake action control device corresponding to the last stage of working temperature control refrigerating device, the split type closed multi-blade adjusting valves of two closed multi-blade adjusting devices are controlled to be opened through the quick air valve actuator, and the split type closed multi-blade adjusting valves of the other closed multi-blade adjusting devices are controlled to be closed through the quick air valve actuator.
Compared with the prior art, the low-temperature air conditioner control system and the control method have the following technical effects:
the invention relates to a low-temperature air conditioner control system and a control method, which apply an automation technology, carry out stepped cooling through a multi-stage surface cooling section, monitor the working state of a surface cooling section compressor in real time through a communication module, control the output of each stage of surface cooling according to a temperature sensor behind the surface cooling section, gradually cool the temperature of inlet air to below 0 ℃, send the inlet air out through an air feeder, introduce an air brake action control device, carry out automatic air brake control aiming at the frosting condition, realize intelligent defrosting operation while keeping the air supply at the temperature below 0 ℃ through the switching among a plurality of air brakes, and ensure the stability of the operation of an air conditioner.
Drawings
FIG. 1 is a block diagram of an embodiment of the present invention for designing a control system for a low temperature air conditioner;
fig. 2 is a schematic structural diagram of an application embodiment of the low-temperature air conditioner control system according to the invention.
The air conditioner comprises an air conditioner 1, an air blower 2, an upper quick air valve actuator 3, a middle quick air valve actuator 4, a lower quick air valve actuator 5, a lower split type closed multi-blade adjusting valve 6, a middle split type closed multi-blade adjusting valve 7, an upper split type closed multi-blade adjusting valve 8, a first-stage temperature sensor 9, a second-stage temperature sensor 10, a third-stage temperature sensor 11, a first-stage surface cooling section 12, a second-stage surface cooling section 13, a third-stage surface cooling section 14, a control module 15 and a communication module 16.
Detailed Description
The following description will explain embodiments of the present invention in further detail with reference to the accompanying drawings.
The invention designs a low-temperature air conditioner control system which is used for controlling an air conditioner 1 to realize air supply at the temperature below 0 ℃, and comprises a control module 15, a communication module 16, an air feeder 2, at least one stage of temperature control refrigerating device and at least one group of air brake action control devices, wherein the air feeder 2, the at least one stage of temperature control refrigerating device and the at least one group of air brake action control devices are arranged in the air conditioner 1.
The control module 15 is connected with the communication module 16, each stage of temperature control refrigerating device respectively comprises a surface cooling section and a temperature sensor, and the surface cooling section and the temperature sensor in each stage of temperature control refrigerating device are respectively butted with the control module 15; the surface cooling sections in each stage of temperature-controlled refrigerating device are sequentially arranged inside the air conditioner 1 and between the air inlet and the air outlet in sequence and are used for controlling the air outlet of the air conditioner 1 to output air with the temperature below 0 ℃, and in practical application, the number of the temperature-controlled refrigerating devices is equal to the number of the temperature-controlled refrigerating devices required by the air conditioner 1 to realize air supply with the temperature below 0 ℃ aiming at the highest temperature of the area; the temperature sensors in the temperature control and refrigeration devices at all levels are respectively arranged on one side of the corresponding surface cold section facing the air outlet of the air conditioner; the blower 2 is arranged in the air conditioner 1 at a position corresponding to the air outlet, the air inlet of the blower 2 faces the air inlet of the air conditioner 1, and the air outlet of the blower 2 faces the air outlet of the air conditioner 1; the control module 15 is in communication with the internal sensor of the air conditioner 1 through the communication module 16, and is used for respectively realizing state monitoring aiming at the compressors of the surface cooling section in each stage of temperature control refrigeration device.
The number of groups of the air brake action control devices does not exceed the number of the temperature-controlled refrigerating devices, one group of the air brake action control devices corresponds to the last stage of temperature-controlled refrigerating device in the air conditioner 1 in the direction from the air inlet to the air outlet, and the rest air brake action control devices correspond to the single-stage temperature-controlled refrigerating devices one by one respectively; each group of air brake action control devices are respectively arranged on one side of the middle cooling section in the corresponding temperature-control refrigerating device, and in the middle of practical application, each air brake action control device can be specifically designed to be respectively arranged on the middle cooling section in the corresponding temperature-control refrigerating device and one side facing an air inlet of an air conditioner, so that a better practical application effect can be brought.
Each group of air brake action control devices respectively comprises at least two closed multi-blade adjusting devices, all closed multi-blade adjusting devices in each group of air brake action control devices are arranged on the corresponding side of a middle cooling section in the corresponding temperature control refrigerating device in a covering mode, each closed multi-blade adjusting device respectively comprises an opposite-open type closed multi-blade adjusting valve and a quick air valve actuator which are mutually butted, a control module 15 is respectively butted with the quick air valve actuator in each closed multi-blade adjusting device, and the control module 15 realizes the control of the opposite-open type closed multi-blade adjusting valve through the control of the quick air valve actuator.
In practical application, the low-temperature air conditioner control system designed by the technical scheme can actually comprise three closed multi-blade adjusting devices, namely an upper closed multi-blade adjusting device, a middle closed multi-blade adjusting device and a lower closed multi-blade adjusting device, aiming at each group of air brake action control devices, wherein the three closed multi-blade adjusting devices in each group of air brake action control devices are respectively arranged at the upper, middle and lower positions of the corresponding side of the middle cooling section in the corresponding temperature control refrigerating device.
In practical application, as shown in fig. 1 and 2, the number of the temperature-controlled refrigeration devices is three, that is, the air conditioner 1 is internally provided with a first-stage temperature-controlled refrigeration device, a second-stage temperature-controlled refrigeration device and a third-stage temperature-controlled refrigeration device in sequence from the air inlet to the air outlet, wherein the first-stage temperature-controlled refrigeration device comprises a first-stage surface cooling section 12 and a first-stage temperature sensor 9, the second-stage temperature-controlled refrigeration device comprises a second-stage surface cooling section 13 and a second-stage temperature sensor 10, the third-stage temperature-controlled refrigeration device comprises a third-stage surface cooling section 14 and a third-stage temperature sensor 11, and the three surface cooling sections are used for controlling the air; and based on the tertiary temperature control refrigerating device, the air brake action control devices are designed into a group, and the group of air brake action control devices corresponds to the last stage temperature control refrigerating device in the air conditioner 1 in the direction from the air inlet to the air outlet.
Based on the technical scheme of the designed low-temperature air conditioner control system, the invention further designs a control method based on the system, and the control method specifically comprises the following steps in practical application.
And step A, calculating the quantity M of the temperature-control refrigerating devices required for realizing air supply at the temperature below 0 ℃ and the cooling design requirements corresponding to the surface cooling sections of the required temperature-control refrigerating devices according to the temperature of the air inlet of the air conditioner 1, and entering the step B.
And step B, selecting M temperature-control refrigerating devices from all the temperature-control refrigerating devices as all stages of working temperature-control refrigerating devices, and enabling the last stage of working temperature-control refrigerating device to be provided with a corresponding air brake action control device in the direction from an air inlet to an air outlet in the air conditioner 1, and then entering the step C.
Step C, aiming at all the other working temperature-control refrigeration devices except the last working temperature-control refrigeration device, if corresponding air brake action control devices exist, controlling the open type closed multi-leaf regulating valves to be opened through a quick air valve actuator aiming at all the closed multi-leaf regulating devices in each group of air brake action control devices; and aiming at the air brake action control device corresponding to the last stage of working temperature control refrigerating device, controlling the opening of the split type closed multi-blade regulating valve by a quick air valve actuator for at least one closed multi-blade regulating device, and controlling the opening of the split type closed multi-blade regulating valve by the quick air valve actuator for the other closed multi-blade regulating devices, wherein the number of the closed multi-blade regulating devices corresponding to the split type closed multi-blade regulating valve in the closed state is at least one, and then entering the step D.
Step D, aiming at the other working temperature-control refrigeration devices at all levels except the last working temperature-control refrigeration device, controlling the compressors on the surface cooling sections of the working temperature-control refrigeration devices at all levels to work according to the cooling design requirements; meanwhile, aiming at the last stage working temperature control refrigerating device, the setting position of the split type closed multi-blade regulating valve in the closed state and the compressor on the corresponding last stage working temperature control refrigerating device are controlled not to work, and the setting position of the split type closed multi-blade regulating valve in the open state and the compressor on the corresponding last stage working temperature control refrigerating device are controlled to work; in this way, the operation of the blower 2 is combined to realize the blowing at the temperature below 0 ℃, and then the step E is carried out.
Step E, judging whether the positions of the split closed multi-leaf regulating valves exist or not and whether the surface of a coil pipe on the corresponding last-stage working temperature-control refrigerating device has a frosting state meeting the preset severity or not aiming at the split closed multi-leaf regulating valves in the opening states corresponding to the last-stage working temperature-control refrigerating device, and if yes, entering the step F; otherwise, no operation is performed.
And F, respectively executing the following operations aiming at the split closed multi-blade regulating valve which meets each opening state corresponding to the position of the coil pipe in the preset severity frosting state.
Firstly, selecting one of the two-piece open type closed multi-blade regulating valve in a closed state, controlling the position of the two-piece open type closed multi-blade regulating valve and the work of a compressor on the corresponding last-stage working temperature control refrigerating device, and then controlling the two-piece open type closed multi-blade regulating valve to be opened through a quick air valve actuator of the two-piece open type closed multi-blade regulating valve in the closed state; meanwhile, aiming at the split type closed multi-blade regulating valve which meets the opening state corresponding to the position of the coil pipe in the frosting state with preset severity, the split type closed multi-blade regulating valve is controlled to be closed through the quick air valve actuator, and the position of the split type closed multi-blade regulating valve and the compressor on the corresponding last-stage working temperature-control refrigerating device are controlled to be defrosted and are in a standby state.
In the step C, aiming at the corresponding damper action control device on the last stage of working temperature control refrigeration device, two of the closed multi-blade adjusting devices are controlled to open the split closed multi-blade adjusting valve through the quick damper actuator, and the other closed multi-blade adjusting devices are controlled to close the split closed multi-blade adjusting valve through the quick damper actuator,
when the unit is started, any two closed multi-blade adjusting devices (an upper closed multi-blade adjusting device and a middle closed multi-blade adjusting device) are firstly opened, one closed multi-blade adjusting device (a lower closed multi-blade adjusting device) is closed, then the compressor systems at the surface cooling sections corresponding to the positions of the upper closed multi-blade adjusting device and the middle closed multi-blade adjusting device are opened, the compressor systems at the surface cooling sections are subjected to graded control according to temperature sensors behind the coil pipes of all stages, the temperature is reduced to be below 0 ℃ in a stepped mode (about 14 ℃ at the first stage, about 5 ℃ at the second stage and about-2 ℃ at the third stage), when a certain layer of the coil pipe at the last stage is frosted, a standby air valve is switched to, namely the closed multi-blade adjusting device (the lower closed multi-blade adjusting device) and the standby compressor at the surface cooling section corresponding to the position of the closed multi-blade adjusting device are closed, and the closed multi-blade, and standing by after defrosting of the corresponding compressor for standby.
According to the low-temperature air conditioner control system and the control method designed by the technical scheme, an automation technology is applied, stepped cooling is carried out through a multi-stage surface cooling section, the working state of a surface cooling section compressor is monitored in real time through a communication module, the output of all levels of surface cooling is controlled according to a temperature sensor behind the surface cooling section, the temperature of inlet air is gradually reduced to be below 0 ℃, the inlet air is sent out through an air feeder, an air brake action control device is introduced, automatic air brake control is carried out according to the frosting condition, intelligent defrosting operation is realized while air supply at the temperature below 0 ℃ is maintained through switching among multiple air brakes, and the running stability of an air conditioner is ensured.
The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.
Claims (6)
1. A low temperature air conditioner control system is used for controlling an air conditioner (1) to realize air supply with the temperature below 0 ℃, and is characterized in that: the air conditioner comprises a control module (15), a communication module (16), a blower (2) arranged in the air conditioner (1), at least one stage of temperature control refrigeration device and at least one group of air brake action control devices;
the control module (15) is connected with the communication module (16), each stage of temperature control refrigerating device respectively comprises a surface cooling section and a temperature sensor, and the surface cooling section and the temperature sensor in each stage of temperature control refrigerating device are respectively butted with the control module (15); the surface cooling sections in each stage of temperature control refrigerating device are sequentially arranged inside the air conditioner (1) and between the air inlet and the air outlet and are used for controlling the air outlet of the air conditioner (1) to output air with the temperature below 0 ℃; the temperature sensors in the temperature control and refrigeration devices at all levels are respectively arranged on one side of the corresponding surface cold section facing the air outlet of the air conditioner; the air feeder (2) is arranged in the air conditioner (1) at a position corresponding to the air outlet, the air inlet of the air feeder (2) faces the air inlet of the air conditioner (1), and the air outlet of the air feeder (2) faces the air outlet of the air conditioner (1); the control module (15) is communicated with an internal sensor of the air conditioner (1) through the communication module (16) and is used for respectively realizing state monitoring aiming at compressors of a middle cooling section in each stage of temperature control refrigerating device;
the number of groups of air brake action control devices is not more than the number of temperature control refrigerating devices, the number of the temperature control refrigerating devices is equal to the number of temperature control refrigerating devices required for realizing air supply at a temperature below 0 ℃ aiming at the highest temperature of the area where the air conditioner (1) is located, one group of air brake action control devices correspond to the last stage of temperature control refrigerating device in the air conditioner (1) and in the direction from the air inlet to the air outlet, and the rest air brake action control devices respectively correspond to the single-stage temperature control refrigerating devices one by one; each air brake action control device is respectively arranged on a middle cooling section of the corresponding temperature-control refrigerating device and on one side facing an air inlet of an air conditioner, each group of air brake action control devices respectively comprises at least two closed multi-blade adjusting devices, all closed multi-blade adjusting devices in each group of air brake action control devices are arranged on the corresponding side of the middle cooling section of the corresponding temperature-control refrigerating device in a covering mode, each closed multi-blade adjusting device respectively comprises a split closed multi-blade adjusting valve and a quick air valve actuator which are mutually butted, a control module (15) is respectively butted with the quick air valve actuator in each closed multi-blade adjusting device, and the control module (15) respectively controls the quick air valve actuator to realize the control of the corresponding split closed multi-blade adjusting valve.
2. A cryogenic air conditioning control system according to claim 1, wherein: each group of air brake action control devices respectively comprise three closed multi-blade adjusting devices, namely an upper closed multi-blade adjusting device, a middle closed multi-blade adjusting device and a lower closed multi-blade adjusting device, and the three closed multi-blade adjusting devices in each group of air brake action control devices are respectively arranged at the upper position, the middle position and the lower position of the corresponding side of the middle cooling section in the corresponding temperature control refrigerating device.
3. A cryogenic air conditioning control system according to claim 1, wherein: the air conditioner comprises an air conditioner body, and is characterized in that the number of the temperature-control refrigerating devices is three, namely a primary temperature-control refrigerating device, a secondary temperature-control refrigerating device and a tertiary temperature-control refrigerating device are sequentially arranged in the air conditioner body (1) from an air inlet to an air outlet, wherein the primary temperature-control refrigerating device comprises a primary surface cooling section (12) and a primary temperature sensor (9), the secondary temperature-control refrigerating device comprises a secondary surface cooling section (13) and a secondary temperature sensor (10), the tertiary temperature-control refrigerating device comprises a tertiary surface cooling section (14) and a tertiary temperature sensor (11), and the three surface cooling sections are used for controlling the air outlet of the air conditioner body (1) to output air with the; the air brake action control devices are in a group and correspond to the last-stage temperature control refrigerating device in the air conditioner (1) in the direction from the air inlet to the air outlet.
4. A control method of a low temperature air conditioning control system based on claim 1, characterized by comprising the steps of:
step A, calculating the quantity M of the temperature-controlled refrigerating devices required for realizing air supply at the temperature below 0 ℃ and the cooling design requirements corresponding to the surface cooling sections of the required temperature-controlled refrigerating devices according to the temperature of the air inlet of the air conditioner (1), and entering step B;
b, selecting M temperature-control refrigerating devices from all the temperature-control refrigerating devices as all levels of working temperature-control refrigerating devices, and enabling air brake action control devices corresponding to the last level of working temperature-control refrigerating devices to exist on the last level of working temperature-control refrigerating devices in the direction from an air inlet to an air outlet in the air conditioner (1), and then entering the step C;
step C, aiming at all the other working temperature-control refrigeration devices except the last working temperature-control refrigeration device, if corresponding air brake action control devices exist, controlling the open type closed multi-leaf regulating valves to be opened through a quick air valve actuator aiming at all the closed multi-leaf regulating devices in each group of air brake action control devices;
aiming at the air brake action control devices corresponding to the last-stage working temperature-control refrigerating device, controlling the split type closed multi-blade regulating valves to be opened by a quick air valve actuator for at least one closed multi-blade regulating device, and controlling the split type closed multi-blade regulating valves to be closed by the quick air valve actuator for the other closed multi-blade regulating devices, wherein the number of the closed multi-blade regulating devices corresponding to the split type closed multi-blade regulating valves in the closed state is at least one, and then entering the step D;
step D, aiming at the other working temperature-control refrigeration devices at all levels except the last working temperature-control refrigeration device, controlling the compressors on the surface cooling sections of the working temperature-control refrigeration devices at all levels to work according to the cooling design requirements;
meanwhile, aiming at the last stage working temperature control refrigerating device, the setting position of the split type closed multi-blade regulating valve in the closed state and the compressor on the corresponding last stage working temperature control refrigerating device are controlled not to work, and the setting position of the split type closed multi-blade regulating valve in the open state and the compressor on the corresponding last stage working temperature control refrigerating device are controlled to work;
thus, the air supply at the temperature below 0 ℃ is realized by combining the work of the air supply machine (2).
5. The control method based on the low-temperature air conditioner control system according to claim 4, characterized in that: after the step D, the method also comprises the following steps, and after the step D is executed, the step E is executed;
step E, judging whether the positions of the split closed multi-leaf regulating valves exist or not and whether the surface of a coil pipe on the corresponding last-stage working temperature-control refrigerating device has a frosting state meeting the preset severity or not aiming at the split closed multi-leaf regulating valves in the opening states corresponding to the last-stage working temperature-control refrigerating device, and if yes, entering the step F; otherwise, no operation is performed; and F, respectively executing the following operations aiming at the split closed multi-blade regulating valve which meets each opening state corresponding to the position of the coil pipe in the preset severity frosting state:
firstly, selecting one of the two-piece open type closed multi-blade regulating valve in a closed state, controlling the position of the two-piece open type closed multi-blade regulating valve and the work of a compressor on the corresponding last-stage working temperature control refrigerating device, and then controlling the two-piece open type closed multi-blade regulating valve to be opened through a quick air valve actuator of the two-piece open type closed multi-blade regulating valve in the closed state;
meanwhile, aiming at the split type closed multi-blade regulating valve which meets the opening state corresponding to the position of the coil pipe in the frosting state with preset severity, the split type closed multi-blade regulating valve is controlled to be closed through the quick air valve actuator, and the position of the split type closed multi-blade regulating valve and the compressor on the corresponding last-stage working temperature-control refrigerating device are controlled to be defrosted and are in a standby state.
6. The control method based on the low-temperature air conditioner control system according to claim 4, characterized in that: based on that each group of air brake action control devices respectively comprises an upper closed multi-blade adjusting device, a middle closed multi-blade adjusting device and a lower closed multi-blade adjusting device, three closed multi-blade adjusting devices in each group of air brake action control devices are respectively arranged at the upper, middle and lower positions of the corresponding side of the middle cooling section in the corresponding temperature control refrigerating device;
in the step C, aiming at the air brake action control device corresponding to the last stage of working temperature control refrigerating device, the split type closed multi-blade adjusting valves of two closed multi-blade adjusting devices are controlled to be opened through the quick air valve actuator, and the split type closed multi-blade adjusting valves of the other closed multi-blade adjusting devices are controlled to be closed through the quick air valve actuator.
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