CN201637037U - Control device for air-conditioning unit - Google Patents

Control device for air-conditioning unit Download PDF

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Publication number
CN201637037U
CN201637037U CN2010201242984U CN201020124298U CN201637037U CN 201637037 U CN201637037 U CN 201637037U CN 2010201242984 U CN2010201242984 U CN 2010201242984U CN 201020124298 U CN201020124298 U CN 201020124298U CN 201637037 U CN201637037 U CN 201637037U
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CN
China
Prior art keywords
air
pipe
control
conditioning
valve
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN2010201242984U
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Chinese (zh)
Inventor
杨光年
周军
王洪
咸云飞
万金鑫
戴凡
徐锋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LIANYUNGANG JIERUI DEEPSOFT TECHNOLOGY Co Ltd
Original Assignee
LIANYUNGANG JIERUI DEEPSOFT TECHNOLOGY Co Ltd
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Application filed by LIANYUNGANG JIERUI DEEPSOFT TECHNOLOGY Co Ltd filed Critical LIANYUNGANG JIERUI DEEPSOFT TECHNOLOGY Co Ltd
Priority to CN2010201242984U priority Critical patent/CN201637037U/en
Application granted granted Critical
Publication of CN201637037U publication Critical patent/CN201637037U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

A control device for an air-conditioning unit comprises an air inlet pipe, an air supply pipe and an air return pipe, wherein a filter screen, an air conditioner coil pipe and a supply fan are sequentially arranged between the air inlet pipe and the air supply pipe. The control device is characterized in that pressure difference switches are arranged on two sides of the filter screen; a freeze-proof switch is additionally arranged on the air conditioner coil pipe; a temperature sensor and a humidity sensor are additionally arranged on the air return pipe; a temperature sensor is arranged on the air supply pipe; the control device is further provided with a control system comprising an industrial computer and a communication card connected therewith; the communication card is connected with an MEC controller through a communication cable; the MEC controller is connected with a plurality of I/O expansion modules through communication cables; the I/O expansion modules are connected with each other in series; and the temperature sensors, the humidity sensor, the freeze-proof switch and the like are connected with the I/O expansion modules through signal wires. The utility model realizes the variable volume operation of the air-conditioning unit, can respond to the change of requirements in time, reduces the energy consumption, improves the degree of automation of the control of the air-conditioning unit, has high operation efficiency, and also improves the comfort of air conditioning areas.

Description

Air-conditioning unit control device
Technical field
The utility model relates to a kind of air conditioner, particularly a kind of air-conditioning unit control device.
Background technology
Traditional air-conditioning system be based on constant flow operation and transmission energy principle, carry out that cooling and heating load calculates and lectotype selection based on traditional engineering design, can't satisfy the interior dynamic change requirement of building personnel to environment, make the incompetent power consumption of air-conditioning system ubiquity more than 30%, the requirement of modern society's low energy consumption, high efficiency and sustainable development can't be satisfied, modernization restructuring need be carried out.Its major defect is embodied in: air-conditioning unit constant flow moves, and can't satisfy the demand of air conditioning area dynamic change, and energy consumption is big, and efficient is low; Traditional air-conditioning system mainly relies on manually-operated, can't make timely reaction to fault in the unit running process, and the equipment failure rate height has influenced the riding quality of whole system.
Summary of the invention
Technical problem to be solved in the utility model is at the deficiencies in the prior art, provide a kind of realized the real-time monitoring to unit operation, greatly reduced unit fault rate, realized the air-conditioning unit control device of the high-efficiency operation of unit.
Technical problem to be solved in the utility model is to realize by following technical scheme.The utility model is a kind of air-conditioning unit control device, comprise blast pipe, ajutage and backwind tube, backwind tube is connected with blast pipe, be provided with air returning valve at its connecting portion, blast pipe is provided with the air intake valve, be provided with screen pack, air-conditioning coil pipe and pressure fan between blast pipe and ajutage successively, the air-conditioning coil pipe is provided with water inlet pipe and return pipe; Be characterized in, be provided with pressure difference switch in the screen pack both sides, be provided with the air-valve actuator on air intake valve and air returning valve, also be provided with antifreeze switch on the air-conditioning coil pipe, return pipe is provided with electric control valve; Be connected with electric cabinet on the pressure fan; On backwind tube, also be provided with temperature sensor and humidity sensor, on ajutage, be provided with temperature sensor; It also is provided with control system, control system comprises industrial computer and the address card that is attached thereto, address card is connected with the MEC controller by communication cable, the MEC controller is connected with the I/O expansion module of several serial connections by communication cable, electric cabinet is connected with the MEC controller by holding wire, and temperature sensor, humidity sensor, pressure difference switch, antifreeze switch, air-valve actuator and electric control valve all are connected with the I/O expansion module by holding wire.
Technical problem to be solved in the utility model can also further realize by following technical scheme.Above-described a kind of air-conditioning unit control device, be characterized in, between air-conditioning coil pipe and pressure fan, also be provided with humidifier, be connected with feed pipe on the humidifier, feed pipe is provided with electric control valve, and this electric control valve also is connected with the I/O expansion module by holding wire.
The main purpose of the utility model control device is by on-the-spot sensing element the information of each air-conditioning unit in the building to be analyzed, sort out, handles, judged, adopt optimized control device and each air-conditioning unit is monitored comprehensively and effectively and managed in conjunction with The present computer technology, make that each unit is in without any confusion all the time, harmonious efficient, order state moves down, to guarantee environment comfortable and safe in the building, save the general expenses of energy consumption and daily management as far as possible.
The utility model can adopt Siemens APOGEE system-specific modular controller to carry out field control as the MEC controller, I/O module by expansion, various signal datas to the work of air-conditioning unit are collected and are handled, and finish the optimal control to the air-conditioning unit.The MEC controller adopts special-purpose communication cable to be connected with the expansion I/O intermodule, PROFIBUS field bus communication agreement; The air-conditioning unit is controlled measurement, the collection of required various signals, and the transmission of control signal, sends all by the holding wire that is connected between expansion I/O module and spot sensor, the electric cabinet and finish.
The utility model can be realized following monitoring function:
(1) the return air humiture is controlled automatically.During winter, automatically electronic control valve opening on the pipeline is carried out PID s operation control (adjusting hot water flow), humidification is controlled, guarantee that air-conditioning unit return air humiture reaches user's setting value according to the return air temperature value of sensor actual measurement; When summer, automatically electronic control valve opening on the pipeline is carried out PID s operation control (regulate the cold water flow, generally do not need humidification summer) according to the return air temperature value of sensor actual measurement, guarantee that air-conditioning unit return air temperature reaches user's setting value; Then calculate enthalpy automatically according to the outdoor humiture of sending into new wind at transition season, and carry out the PID computing with the enthalpy of indoor return air, its result will control the aperture of new air-valve, air returning valve automatically, to reach the effect that automatic adjusting mixes the wind ratio.
(2) interlock protection control.Behind the air-conditioning compressor emergency shutdown, close air intake valve, air returning valve, electric control valve automatically; Behind the unit starting, when its screen pack pressure reduction was reported to the police, then interlocking was shut down; Cross when low when the winter environment temperature, unit carried out anti-frost protection---when antifreeze switch sends when reporting to the police, close the air intake valve; unit is out of service; electric control valve is transferred to maximum opening, and the ON cycle water pump is accelerated hot water circuit, prevents that the unit inner coil pipe is by bursting by freezing.
(3) energy-saving run: intermittent duty makes equipment intermittently start and stop rationally, but does not influence the amenity degree.
Optimum start-up: according to personnel activity's situation in the building, open the air-conditioning unit in advance, night nobody the time, do not start the air-conditioning unit.
Best shutdown:, stop air-conditioning equipment in advance according to personnel's quitting time in the building.
Adjust setting value: according to outside air temperature setting value is adjusted, reduced the air-conditioning equipment energy consumption.
The utility model is to being the humiture of air-conditioning system of main controlled plant and other relevant parameters detect automatically, regulate automatically and warning, the interlock protection of relevant signal are controlled with air conditioning area; to guarantee that air-conditioning system all the time in the optimal working point operation, satisfies the environmental condition that comfortableness or manufacturability require.
Temperature control is automatically finished control procedure by following flow process: after sensor detects return air temperature θ r, be converted to signal of telecommunication θ z by transmitter, compare with set-point θ g, draw comparison deviation e=θ g-θ z, then e is sent in the adjuster; Adjuster is regulated rule (P, PI commonly used, PID, fuzzy etc.) according to it, and output regulation signal p removes to control actuator (motorized adjustment valve actuator) automatically; Actuator goes to control to adjust valve opening according to input signal, thereby the rate-of flow of control valve is flow through in control.Like this, air-conditioning unit terminal will automatically adjust and exports q cold (heat) amount, and return air temperature is controlled.This process constantly circulates at whole air-conditioning system run duration, makes return air temperature remain at the scope that set-point allows.The humidity control flow is the same.
Compare with original technology, advantage of the present utility model and technique effect are as follows:
(1) the utility model is realized the operation of air-conditioning unit unsteady flow amount, can in time make a response to the variation of demand, has reduced energy consumption, has improved the comfortableness of air conditioning area.
(2) the utility model has improved the automaticity of air-conditioning unit control, has realized the real-time monitoring to unit operation, has greatly reduced the fault rate of unit, has realized the high-efficiency operation of unit, has improved the riding quality of air-conditioning system.
Description of drawings
Fig. 1 is a kind of structural principle schematic diagram of the present utility model.
Fig. 2 is a kind of control principle block diagram of the present utility model.
The specific embodiment
Following with reference to accompanying drawing, further describe concrete technical scheme of the present utility model, so that those skilled in the art understands the present invention further, and do not constitute restriction to its right.
Embodiment 1.With reference to Fig. 1-2.A kind of air-conditioning unit control device, comprise blast pipe 1, ajutage 10 and backwind tube 12, backwind tube 12 is connected with blast pipe 1, be provided with air returning valve 14 at its connecting portion, blast pipe 1 is provided with air intake valve 2, be provided with screen pack 5, air-conditioning coil pipe 7 and pressure fan 11 between blast pipe 1 and ajutage 10 successively, air-conditioning coil pipe 7 is provided with water inlet pipe and return pipe; Be provided with pressure difference switch 4 in screen pack 5 both sides, be provided with air-valve actuator 3 on air intake valve 2 and air returning valve 14, also be provided with antifreeze switch 8 on air-conditioning coil pipe 7, return pipe is provided with electric control valve 6; Be connected with electric cabinet on the pressure fan 11; On backwind tube 12, also be provided with temperature sensor 9 and humidity sensor 13, on ajutage 10, be provided with temperature sensor 9; It also is provided with control system, control system comprises industrial computer and the address card that is attached thereto, address card is connected with the MEC controller by communication cable, the MEC controller is connected with the I/O expansion module of several serial connections by communication cable, electric cabinet is connected with the MEC controller by holding wire, and temperature sensor 9, humidity sensor 13, pressure difference switch 4, antifreeze switch 8, air-valve actuator 3 and electric control valve 6 all are connected with the I/O expansion module by holding wire.
Embodiment 2.In embodiment 1 described a kind of air-conditioning unit control device, between air-conditioning coil pipe 7 and pressure fan 11, also be provided with humidifier 15, be connected with feed pipe on the humidifier 15, feed pipe is provided with electric control valve 6, and this electric control valve 6 also is connected with the I/O expansion module by holding wire.

Claims (2)

1. air-conditioning unit control device, comprise blast pipe (1), ajutage (10) and backwind tube (12), backwind tube (12) is connected with blast pipe (1), be provided with air returning valve (14) at its connecting portion, blast pipe (1) is provided with air intake valve (2), be provided with screen pack (5), air-conditioning coil pipe (7) and pressure fan (11) between blast pipe (1) and ajutage (10) successively, air-conditioning coil pipe (7) is provided with water inlet pipe and return pipe; It is characterized in that, be provided with pressure difference switch (4) in screen pack (5) both sides, be provided with air-valve actuator (3) on air intake valve (2) and air returning valve (14), also be provided with antifreeze switch (8) on air-conditioning coil pipe (7), return pipe is provided with electric control valve (6); Pressure fan is connected with electric cabinet on (11); On backwind tube (12), also be provided with temperature sensor (9) and humidity sensor (13), on ajutage (10), be provided with temperature sensor (9); It also is provided with control system, control system comprises industrial computer and the address card that is attached thereto, address card is connected with the MEC controller by communication cable, the MEC controller is connected with the I/O expansion module of several serial connections by communication cable, electric cabinet is connected with the MEC controller by holding wire, and temperature sensor (9), humidity sensor (13), pressure difference switch (4), antifreeze switch (8), air-valve actuator (3) and electric control valve (6) all are connected with the I/O expansion module by holding wire.
2. a kind of air-conditioning unit control device according to claim 1, it is characterized in that, between air-conditioning coil pipe (7) and pressure fan (11), also be provided with humidifier (15), humidifier is connected with feed pipe on (15), feed pipe is provided with electric control valve (6), and this electric control valve (6) also is connected with the I/O expansion module by holding wire.
CN2010201242984U 2010-03-05 2010-03-05 Control device for air-conditioning unit Expired - Fee Related CN201637037U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010201242984U CN201637037U (en) 2010-03-05 2010-03-05 Control device for air-conditioning unit

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Application Number Priority Date Filing Date Title
CN2010201242984U CN201637037U (en) 2010-03-05 2010-03-05 Control device for air-conditioning unit

Publications (1)

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CN201637037U true CN201637037U (en) 2010-11-17

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102589214A (en) * 2012-03-12 2012-07-18 中国建筑东北设计研究院有限公司 Winter integrated automatic defrosting and anti-freezing operation system of new air exhaust heat exchange unit
CN102840655A (en) * 2012-10-15 2012-12-26 浙江盾安机械有限公司 Air-conditioning system
CN103149895A (en) * 2013-01-31 2013-06-12 北京恒业世纪科技股份有限公司 Building automatic control method
CN103604200A (en) * 2013-11-25 2014-02-26 嘉兴南洋职业技术学院 Central-air-conditioning air supply system
CN104390281A (en) * 2014-12-03 2015-03-04 江苏风神空调集团股份有限公司 Disc type air ecological box and climatic ecological air conditioning method thereof
CN104654454A (en) * 2014-08-13 2015-05-27 戴若夫 Haze removing air conditioner
CN105605732A (en) * 2015-12-23 2016-05-25 广东美博制冷设备有限公司 Air-conditioner dust displaying and alarming device
CN105843093A (en) * 2016-03-23 2016-08-10 广东芬尼克兹节能设备有限公司 Extension module, extension module control method and mounting structure
CN105894916A (en) * 2016-04-20 2016-08-24 重庆电子工程职业学院 Simple air-conditioning system flow process control experimental device
CN110925878A (en) * 2019-11-26 2020-03-27 珠海格力电器股份有限公司 Combined air conditioning unit and control method, device and controller thereof

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102589214A (en) * 2012-03-12 2012-07-18 中国建筑东北设计研究院有限公司 Winter integrated automatic defrosting and anti-freezing operation system of new air exhaust heat exchange unit
CN102840655A (en) * 2012-10-15 2012-12-26 浙江盾安机械有限公司 Air-conditioning system
CN103149895A (en) * 2013-01-31 2013-06-12 北京恒业世纪科技股份有限公司 Building automatic control method
CN103149895B (en) * 2013-01-31 2015-09-23 北京恒业世纪科技股份有限公司 A kind of building automation method
CN103604200A (en) * 2013-11-25 2014-02-26 嘉兴南洋职业技术学院 Central-air-conditioning air supply system
CN103604200B (en) * 2013-11-25 2016-01-20 嘉兴南洋职业技术学院 A kind of air supply system of central air-conditioning
CN104654454A (en) * 2014-08-13 2015-05-27 戴若夫 Haze removing air conditioner
CN104654454B (en) * 2014-08-13 2018-09-18 戴若夫 One kind removing haze air-conditioning
CN104390281A (en) * 2014-12-03 2015-03-04 江苏风神空调集团股份有限公司 Disc type air ecological box and climatic ecological air conditioning method thereof
CN104879844A (en) * 2014-12-03 2015-09-02 江苏风神空调集团股份有限公司 Disc type air ecosystem box
WO2016086562A1 (en) * 2014-12-03 2016-06-09 江苏风神空调集团股份有限公司 Disc-type air ecosystem box and climatic ecologized air-conditioning method therefor
CN105605732A (en) * 2015-12-23 2016-05-25 广东美博制冷设备有限公司 Air-conditioner dust displaying and alarming device
CN105843093A (en) * 2016-03-23 2016-08-10 广东芬尼克兹节能设备有限公司 Extension module, extension module control method and mounting structure
CN105894916A (en) * 2016-04-20 2016-08-24 重庆电子工程职业学院 Simple air-conditioning system flow process control experimental device
CN110925878A (en) * 2019-11-26 2020-03-27 珠海格力电器股份有限公司 Combined air conditioning unit and control method, device and controller thereof

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C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20101117

Termination date: 20140305