CN210485941U - Automatic control system of water-cooling air conditioning unit - Google Patents
Automatic control system of water-cooling air conditioning unit Download PDFInfo
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- CN210485941U CN210485941U CN201921210617.0U CN201921210617U CN210485941U CN 210485941 U CN210485941 U CN 210485941U CN 201921210617 U CN201921210617 U CN 201921210617U CN 210485941 U CN210485941 U CN 210485941U
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Abstract
The utility model discloses a water-cooling air conditioning unit automated control system, including fresh air valve and valve driver, return air valve and valve driver, first effect filter screen pressure differential switch, well effect filter screen pressure differential switch, cold coil pipe and water valve executor, hot coil pipe and water valve executor, humidifier equipment, tuber pipe temperature sensor, tuber pipe temperature and humidity sensor, direct digital controller box and auxiliary, multi-functional electric power meter. By adopting the automatic control system of the water-cooling air conditioning unit, direct contact between personnel and large-scale power equipment is avoided, and electric shock danger is reduced; the air conditioning unit can be automatically turned on or turned off at different time periods between the ordinary time and the holidays, so that human errors are avoided; if the air conditioning unit or the power distribution equipment fails, a user can receive alarm information at the first time and timely maintain the air conditioning unit; the temperature, humidity and air quality regulation is reasonably carried out for the user, and the comfort of the indoor environment of the user is ensured.
Description
Technical Field
The utility model relates to an air conditioner control field, in particular to water-cooling air conditioning unit automated control system.
Background
The building automatic control means that various large-scale electric power equipment in a building, such as an elevator, a water pump, a fan, an air conditioning unit and the like, are managed through technical means, and the main working property of the building automatic control is that electric power driving is carried out on the electric power equipment through a direct digital controller, input and output equipment such as a sensor and a valve actuator. Usually, these devices are in an open operating state, i.e. do not form a closed loop. As long as the power is switched on, the equipment works, and as for the working state, the process, the energy consumption and the like, the data cannot be obtained on line in time, so that reasonable use and energy conservation are not mentioned. In the existing building automatic control, the electrical equipment is monitored on line, the working state of the equipment is detected by arranging a corresponding sensor, a travel switch, photoelectric control and the like, the working state is returned to a central computer of a control room through a circuit, an analysis result is obtained by the computer, and the analysis result is returned to an equipment terminal for regulation.
The building automatic control system generally comprises a central control device (a centralized control computer, a color monitor, a keyboard, a printer, an uninterruptible power supply, a communication interface and the like), a field DDC controller, a communication network, and corresponding components such as a sensor, an actuator, a regulating valve and the like.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the purpose is: the automatic control system of the water-cooled air conditioning unit is used for realizing the high-efficiency, safe and low-consumption operation and use of a large central water-cooled air conditioning unit in a commercial building or an industrial factory building and effectively checking information such as alarm, energy consumption and the like of the air conditioning unit.
The technical scheme of the utility model is that:
an automatic control system of a water-cooling air conditioning unit comprises:
the fresh air valve is arranged at a fresh air port of the water-cooling air conditioning unit and is provided with a fresh air valve driver;
the air return valve is arranged at an air return inlet of the water-cooled air conditioning unit and is provided with an air return valve driver;
the primary filter screen pressure measuring device and the intermediate filter screen pressure measuring device are respectively arranged on two sides of the primary filter screen and two sides of the intermediate filter screen in the fresh air duct and are used for measuring the pressure difference on two sides of the filter screen;
the low-temperature alarm protection device of the hot coil is arranged on the hot water coil;
the fan pressure measuring devices are arranged on two sides of the air feeder and used for measuring the pressure difference of the two sides of the air feeder;
the two air pipe temperature and humidity sensors are respectively arranged in an air return air port and an air supply pipe port of the water-cooled air conditioning unit;
and the direct digital controllers are respectively connected with and control the work of each unit.
Preferably, the direct digital controller is installed in an automatic control module box of the air conditioning unit, the automatic control module box of the air conditioning unit is fixed beside a strong current control cabinet of the air conditioning unit, and cables of all units are laid on the direct digital controller; the air conditioning unit power-on control cabinet feeds back digital manual and automatic state, fault alarm and running state points to the direct digital controller.
Preferably, the direct digital controller supports a Web access function, a script programmable function, a historical data storage function, an embedded function of a graphical interface, and a security access and user right distribution function.
Preferably, a calculus PID (proportion integration differentiation) regulation logic function is embedded in the direct digital controller, and the frequency of the air feeder is preferentially controlled to adjust the air supply quantity through the temperature detection of the air return inlet; and when the frequency of the air feeder reaches the set upper limit and lower limit, the opening degree of the cold and hot water valve is adjusted again, the return air temperature is ensured to meet the requirements, and meanwhile, the requirements of minimum fresh air volume, ventilation times and positive pressure are ensured.
Preferably, the air pipe type humidity sensor on the air supply pipe is used for measuring parameters and sending the parameters to the direct digital controller, the micro integral PID adjusting logic function is embedded in the direct digital controller, the humidity switch is automatically adjusted according to the preset humidity requirement, and the air supply humidity is guaranteed to be within a reasonable range.
Preferably, the system also comprises a carbon dioxide sensor arranged in the return air duct, the carbon dioxide sensor is used for measuring parameters and sending the parameters to the direct digital controller, and the direct digital controller is used for adjusting the proportion of fresh return air and return air according to the quality of the return air so as to ensure the indoor air quality of an air-conditioning area.
Preferably, the blower is linked with the fresh air valve, the blower pressure measuring device senses the state of the blower to perform verification linkage, and if the operation is abnormal, the system is warned and stopped to operate until the system is restarted after the failure is eliminated.
Preferably, the hot coil pipe low temperature alarm protection device, the low temperature alarm signal is triggered to the anti-freeze switch, and direct digital controller starts the electronic water valve switch and avoids the water pipe frost crack.
Preferably, the strong current control cabinet of the air conditioning unit feeds back digital quantity manual and automatic states, fault alarm and running state points of the direct digital controller by adopting passive normally open dry contacts.
Preferably, the system also comprises a multifunctional ammeter, the multifunctional ammeter collects the electric quantity consumed by the air conditioning unit and transmits the electric quantity to the direct digital controller, and the direct digital controller compares the collected electric quantity with the logic of the direct digital controller and judges the temperature regulation range; the direct digital controller logically judges the air quality, and on the premise of ensuring the indoor fresh air quality, the minimum fresh air is introduced from the outdoor, so that the energy consumption of a user is controlled to be continuously reduced.
The utility model has the advantages that:
for a large building, most of internal air conditioners adopt water-cooled large central air conditioners, and the automatic control system of the water-cooled air conditioning unit has a plurality of benefits for managers and users:
1. the direct contact between personnel and large-scale power equipment is avoided, and the electric shock danger is reduced;
2. the air conditioning unit can be automatically turned on or turned off at different time periods between the ordinary time and the holidays, so that human errors are avoided;
3. if the air conditioning unit or the power distribution equipment fails, a user can receive alarm information at the first time and timely maintain the air conditioning unit;
4. the state, the refrigerating and heating temperature, the humidity, the environment and the like of each time period of the air conditioning unit are recorded in an accumulated mode, historical data of the air conditioning unit can be called at any time, and a user can conveniently analyze the data;
5. the temperature regulation, the humidity regulation and the air quality regulation are reasonably carried out on the user, and the comfort of the indoor environment of the user is ensured;
6. the energy consumption of the air conditioning unit is timely acquired and analyzed by a user, the air conditioning unit is logically judged when the air conditioning unit is started and can be closed in advance, the temperature is set to what degree and the fresh air is supplemented, and the energy consumption is saved to the maximum extent by the user.
Drawings
The invention will be further described with reference to the following drawings and examples:
FIG. 1 is a schematic diagram of an automatic control system of a water-cooled air conditioning unit;
fig. 2 is a flow chart of the function realization of the automatic control system of the water-cooling air conditioning unit.
Detailed Description
As shown in figure 1, an automatic control system of a water-cooled air conditioning unit comprises a fresh air valve, a valve driver,
The system comprises an air return valve, a valve driver, a primary filter screen differential pressure switch, a secondary filter screen differential pressure switch, a cold coil pipe, a water valve actuator, a hot coil pipe, a water valve actuator, humidifier equipment, an air pipe temperature sensor, an air pipe temperature and humidity sensor, a direct digital controller box body, an auxiliary part and a multifunctional electric power meter. Wherein:
the fresh air valve is arranged at a fresh air port of the water-cooling air conditioning unit and is provided with a fresh air valve driver;
the air return valve is arranged at an air return inlet of the water-cooled air conditioning unit and is provided with an air return valve driver;
the primary filter screen pressure measuring device and the intermediate filter screen pressure measuring device are respectively arranged on two sides of the primary filter screen and two sides of the intermediate filter screen in the fresh air duct and are used for measuring the pressure difference on two sides of the filter screen;
the low-temperature alarm protection device of the hot coil is arranged on the hot water coil;
the fan pressure measuring devices are arranged on two sides of the air feeder and used for measuring the pressure difference of the two sides of the air feeder;
the two air pipe temperature and humidity sensors are respectively arranged in an air return air port and an air supply pipe port of the water-cooled air conditioning unit;
the carbon dioxide sensor is arranged in the return air duct;
and the direct digital controllers are respectively connected with and control the work of each unit.
The direct digital controller is arranged in an automatic control module box of the air conditioning unit, the automatic control module box of the air conditioning unit is fixed beside a strong current control cabinet of the air conditioning unit, and cables of all units are laid on the direct digital controller; the air conditioning unit power-on control cabinet feeds back digital manual and automatic state, fault alarm and running state points to the direct digital controller. The cabling specifications of each unit are shown in table 1.
TABLE 1 Cabling Specification of Each Unit
The direct digital controller in the automatic control module box of the air conditioning unit supports a Web access function, a script programmable function, a historical data storage function, a graphical interface embedding function and a safety access and user authority distribution function. The specific implementation scheme is shown in fig. 2 and includes the following functions.
1. Temperature and variable frequency control of the air conditioning unit: the direct digital controller is embedded with a calculus PID (proportion integration differentiation) regulation logic function, and the frequency of the air feeder is preferentially controlled to adjust the air supply quantity through the temperature detection of the air return inlet; and when the frequency of the air feeder reaches the set upper limit and lower limit, the opening degree of the cold and hot water valve is adjusted again, the return air temperature is ensured to meet the requirements, and meanwhile, the requirements of minimum fresh air volume, ventilation times and positive pressure are ensured.
2. Humidity control of the air conditioning unit: the air pipe type humidity sensor on the air supply pipe can measure parameters and send the parameters to the direct digital controller, the direct digital controller is embedded with a calculus PID (proportion integration differentiation) regulation logic function, and a humidity switch is automatically regulated according to the preset humidity requirement, so that the air supply humidity is ensured to be in a reasonable range.
3. And (3) fresh air volume control: the carbon dioxide sensor in the return air duct gives the measured parameters to the direct digital controller, and the direct digital controller adjusts the proportion of fresh return air according to the quality of the return air so as to ensure the indoor air quality of the air-conditioning area.
4. The filter screen differential pressure sensor senses the filter efficiency of the filter screen, and warns to inform a manager to clean and maintain if the filter screen is dirty.
5. The blower is linked with the fresh air valve, the fan pressure measuring device senses the state of the fan to perform verification linkage, and the system is warned and stopped to run if the fan operates abnormally until the system is restarted after the fan operates abnormally;
6. the anti-freezing switch triggers a low-temperature alarm signal, and the direct digital controller starts the electric water valve switch to avoid frost cracking of the water pipe.
7. The distribution control box feeds back digital quantity manual automatic state, fault alarm and running state points of the direct digital controller to adopt passive normally open dry contacts, and the start-stop control points adopt 24V normally open contacts.
8. The multifunctional ammeter collects the electric quantity consumed by the air conditioning unit and transmits the electric quantity to the direct digital controller, and the direct digital controller compares the collected electric quantity with self logic and judges the temperature regulation range; the direct digital controller logically judges the air quality, and on the premise of ensuring the indoor fresh air quality, the minimum fresh air is introduced from the outdoor, so that the energy consumption of a user is controlled to be continuously reduced.
The types and principles of large air conditioning units on the market are very many at present, the air conditioning unit is the most common air conditioning unit working principle, and the automatic control thought is adopted to carry out intelligent control on the air conditioning unit by combining the working principle of the air conditioning unit, so that the air conditioning unit is vital.
The scheme logically integrates the building automatic control technology and the energy metering technology, creates a special strong and weak electricity integrated technology, and achieves the purpose of deep energy conservation of the large air conditioning unit on the basis of conventional use. All similar functional designs that proceed with reference to the present invention should be within the scope of protection of this patent.
Claims (6)
1. The utility model provides a water-cooling air conditioning unit automated control system which characterized in that includes:
the fresh air valve is arranged at a fresh air port of the water-cooling air conditioning unit and is provided with a fresh air valve driver;
the air return valve is arranged at an air return inlet of the water-cooled air conditioning unit and is provided with an air return valve driver;
the primary filter screen pressure measuring device and the intermediate filter screen pressure measuring device are respectively arranged on two sides of the primary filter screen and two sides of the intermediate filter screen in the fresh air duct and are used for measuring the pressure difference on two sides of the filter screen;
the low-temperature alarm protection device of the hot coil is arranged on the hot water coil;
the fan pressure measuring devices are arranged on two sides of the air feeder and used for measuring the pressure difference of the two sides of the air feeder;
the two air pipe temperature and humidity sensors are respectively arranged in an air return air port and an air supply pipe port of the water-cooled air conditioning unit;
and the direct digital controllers are respectively connected with and control the work of each unit.
2. The automatic control system of water-cooled air conditioning unit according to claim 1, wherein the direct digital controller is installed in an automatic control module box of the air conditioning unit, the automatic control module box of the air conditioning unit is fixed beside a strong electric control cabinet of the air conditioning unit, and cables of each unit are laid to the direct digital controller; the air conditioning unit power-on control cabinet feeds back digital manual and automatic state, fault alarm and running state points to the direct digital controller.
3. The automated water-cooled air conditioning unit control system according to claim 2, further comprising a carbon dioxide sensor installed in the return air duct, wherein the carbon dioxide sensor sends the measured parameters to the direct digital controller, and the direct digital controller adjusts the ratio of the fresh return air according to the quality of the return air so as to ensure the indoor air quality of the air-conditioning area.
4. The automated water-cooled air conditioning unit control system according to claim 3, wherein the blower is linked with the fresh air valve, the blower pressure measuring device senses the state of the blower to perform verification linkage, and if the operation is abnormal, the system is warned and stopped until the system is restarted after the failure is removed.
5. The automatic control system of water-cooled air conditioning unit according to claim 4, characterized in that the thermal coil low-temperature alarm protection device, the anti-freezing switch triggers the low-temperature alarm signal, and the direct digital controller activates the electric water valve switch to prevent the water pipe from freezing and cracking.
6. The automatic control system of water-cooled air conditioning unit according to claim 5, characterized in that the manual and automatic state of digital quantity, the fault alarm and the operation state point fed back to the direct digital controller by the strong electric control cabinet of air conditioning unit adopt passive normally open dry contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921210617.0U CN210485941U (en) | 2019-07-30 | 2019-07-30 | Automatic control system of water-cooling air conditioning unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921210617.0U CN210485941U (en) | 2019-07-30 | 2019-07-30 | Automatic control system of water-cooling air conditioning unit |
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| Publication Number | Publication Date |
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| CN210485941U true CN210485941U (en) | 2020-05-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921210617.0U Expired - Fee Related CN210485941U (en) | 2019-07-30 | 2019-07-30 | Automatic control system of water-cooling air conditioning unit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110398009A (en) * | 2019-07-30 | 2019-11-01 | 苏州市恒铭机电工程有限公司 | A kind of Water cooled air conditioners unit automatic control system |
-
2019
- 2019-07-30 CN CN201921210617.0U patent/CN210485941U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110398009A (en) * | 2019-07-30 | 2019-11-01 | 苏州市恒铭机电工程有限公司 | A kind of Water cooled air conditioners unit automatic control system |
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Granted publication date: 20200508 |
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