CN201575555U - Converter with DDC control function for air conditioner - Google Patents
Converter with DDC control function for air conditioner Download PDFInfo
- Publication number
- CN201575555U CN201575555U CN2009200697547U CN200920069754U CN201575555U CN 201575555 U CN201575555 U CN 201575555U CN 2009200697547 U CN2009200697547 U CN 2009200697547U CN 200920069754 U CN200920069754 U CN 200920069754U CN 201575555 U CN201575555 U CN 201575555U
- Authority
- CN
- China
- Prior art keywords
- frequency converter
- ddc
- air
- converter
- ddc control
- 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
Links
Images
Abstract
The utility model discloses a converter with DDC control function for an air conditioner, comprising the converter for the air conditioner; and the converter is internally provided with a DDC control module which leads the converter to be provided with the DDC control function and is also provided with an I/O port for controlling the DDC control module. The converter is a solving scheme for controlling the low cost, can realize the function requirements in most application occasions, and leads the system to be characterized by having simple structures and simple operation, greatly reducing the one-time investment, and having remote networking monitoring function of an upper computer.
Description
Technical field:
The utility model relates to a kind of frequency converter of idle call, particularly a kind of air-conditioning special converter with DDC control function.
Background technology:
Use RHVC at the terminal air-treatment unit of central air-conditioning, regulate the air-conditioning discharge quantity of fan with the method for regulating rotation speed of fan, this mode is regulated the air-valve mode than tradition and is had advantages such as saves energy, air-flow are evenly distributed, system's operation noise reduction, thereby in the terminal air treatment system of central air-conditioning, obtained extensive use, be the air quantity regulative mode of a kind of green, environmental protection.
So-called DDC control, be exactly based on microprocessor in fact, not by analogue instrument and with the output signal of sensor in the air-conditioner control system or transmitter, be directly inputted in the miniature processing unit (CPU), after the program computing that CPU works out in advance, directly the control mode of actuate actuators is called for short DDC (Direct Digital Control).The CPU speed of service in the DDC controller is very fast, in its program curing, embedded the needed application programs of a large amount of air-conditioning control functions (as PI, PID, cascade PID etc.),, can obtain to satisfy the function setting of air-conditioning field control requirement generally by simple key-press/menu call operation; The input/output port of its configuration (I/O) can satisfy most air-conditioning unit field controls.Therefore DDC control is extensively widely applied in each independent functional units of central air-conditioning (as refrigeration host computer, recirculated water unit, terminal air conditioner unit etc.), is a kind of central air-conditioning unit controls mode of main flow.
A lot of occasions during the terminal air conditioner unit of numerous central air-conditioning uses, both needed air parameters such as temperature/humidity to be controlled by the air conditioning terminal air conditioner unit, also to regulate simultaneously, to satisfy requirements such as noise control and comfort levels to air-conditioner air quantity/wind speed.In this case, traditional control scheme is to adopt that " frequency converter+DDC controller " hardware group is incompatible to reach this function: frequency converter is adopted in the control and regulation of air quantity/wind speed; And temperature/moisture control function then is equipped with necessary temperature/humidity sensor and actuator (cold/hot water valve, heating/humidifier etc.) by the DDC controller and finishes.Owing to adopt frequency converter+DDC controller compound mode, thereby system exists at aspects such as volume size/cost performances obviously not enough.
The utility model content:
The utility model is in the terminal air conditioner unit of existing central air conditioner system (specialty is called for short AHU), adopt the existing problem of control mode of " frequency converter+DDC controller " combination, and provide a kind of air-conditioning special converter with DDC control function, it is for controlling solution cheaply, can realize the functional requirement of most of application scenarios, system is had constitute easy, once the amplitude that has high input reduce, easy and simple to handle, have characteristics of host computer remote networking monitoring function.
In order to achieve the above object, the technical scheme that the utility model adopted is as follows:
The idle call frequency converter of band DDC control function, it comprises an idle call frequency converter, is provided with the DDC control module that makes frequency converter have DDC control function in the described frequency converter, also is provided with DDC control module control I/O port on the described frequency converter.
Also be provided with the RTU module that to carry out telecommunication by control bus and host computer in the described frequency converter.
Described frequency converter also disposes the LCD operator of a Chinese interface, and it comprises the LCD screen of function corresponding operated key and display parameters, state.
Adopt the light current patch cable to be connected between described LCD operator and the frequency converter.
The universal low voltage frequency converter basic configuration that the utility model application technology mature and reliable, the relative cost that obtains according to technique scheme is lower, in the frequency converter instruction system, increase and embed air-conditioning control DDC control microprogram, and be aided with to adjust and DDC control I/O port is set, increases LCD Chinese interface air-conditioning operation board, increases method such as master control borad RTU function, realized implanting, made its speed governing that has universal frequency converter concurrently and air-conditioning control DDC function in the function of air-conditioning control DDC on the universal frequency converter basis.Owing to tie up to the functional development on the ripe universal frequency converter technical foundation, make it have the succinct maturation of system, constitute characteristics such as cost is low, application is convenient and simple, be that a kind of air conditioning terminal with fine cost performance is controlled the scheme of determining, have the meaning of market application widely.
Description of drawings:
Further specify the utility model below in conjunction with the drawings and specific embodiments.
Fig. 1 is a theory diagram of the present utility model.
Fig. 2 is the air conditioning terminal air conditioner unit system schematic of 4 control band VMCs.
Fig. 3 is terminal air conditioner unit multicomputer communication team control schematic diagram.
The specific embodiment:
For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.
The utility model is in order to solve in the terminal air conditioner unit of existing central air conditioner system (specialty is called for short AHU), adopt the existing problem of control mode of " frequency converter+DDC controller " combination, and a kind of idle call frequency converter with the DDC function is provided, as shown in Figure 1:
Be provided with the DDC control module at general frequency converter CPU master control borad, frequency converter become have the frequency converter CPU master control borad 1 that air conditioning terminal is controlled DDC control function commonly used; Simultaneously the control I/O port of frequency converter is done suitable adjustment, make it to become the DDC control module and carry out DDC and control needed special I/O port 2.This scheme makes it keeping the universal frequency converter function simultaneously, has possessed general air conditioner unit and has controlled needed DDC control function; Extend the function expanded frequency converter, simplified the hardware configuration of air-conditioner control system, reduced system cost, being suitable for need applying air quantity is regulated and air parameter such as temperature/humidity is regulated air conditioning terminal system.
Operation is generally all undertaken by dedicated operations dish 4 interfaces (guidance panel) instruction code in view of frequency converter, and is generally unskilled/professional's operating difficulties.Thereby the utility model also makes frequency converter dispose the LCD operator 3 of Chinese interface, and it comprises the LCD screen of the function manipulation key that passes through and display parameters, state.So general personnel can carry out the operations of operation of air conditioner, as open/stop, cold/the heat pattern conversion, temperature setting, wind speed adjusting etc.; The LCD screen has the fault alarm Presentation Function concurrently, can show current operation/malfunction.Adopt general light current patch cable to be connected between frequency converter and the LCD operator, scene installation/maintenance is simple and convenient.
While the utility model is the also integrated RTU module 5 that is provided with in frequency converter also, it can utilize general general purpose control mode bus, as RS-485 etc., form communication network easily with host computers such as PLC, IPC, by general software/hardware support, can realize easily on-the-spot air-conditioning unit is carried out remote monitoring.
Based on such scheme, concrete enforcement of the present utility model is as follows:
As shown in Figure 2, it is the air conditioning terminal air conditioner unit system schematic of 4 control band VMCs.Among this figure 101 be return air temperature sensor, 102 for wind pushing temperature sensor, 103 for new wind, 104 for air draft, 105 for return air, 106 for air conditioning area, 107 for air-supply, 108 for pressure fan, 109 for cold water, 110 for hot water, 111 for the poor efficiency filter screen, 112 for hot coil, 113 for cooling coil, 114 for middle effect filter screen.
In this system, utilize the basic configuration of the general software/hardware of universal frequency converter 11, when the Inverter Application bottom software is developed, embed DDC control function command,, make frequency converter have air conditioning terminal control DDC control function commonly used as PI, PID, cascade PID etc.; Simultaneously suitably the control I/O port of frequency converter is done suitable adjustment, make it to be fit to DDC control basic need, as shown in the figure, the port that X1, X2 and Y1, Y2 come to this.
Operation is generally all undertaken by dedicated operations dish interface (guidance panel) instruction code in view of frequency converter, and is generally unskilled/professional's operating difficulties.Thereby, the frequency converter special configuration of band DDC control function LCD Chinese interface operation board 12.
Adopt the light current cable of band RJ11 standard interface plug-in unit to be connected between this LCD operation board 12 and the frequency converter 11, installation/maintenance etc. can adopt " hot plug " shortcut to carry out simple and convenient.
All operational orders relevant with the air-conditioning operation all are solidificated on LCD operation board 12 control chips with microprogram, general operation commonly used, as air-conditioning open/stop, temperature demonstration/adjusting, refrigerating/heating selection, wind speed/air quantity selection etc., can carry out with relevant function key 16 at general LCD display 15, meet the operating habit of general air-conditioning product.
The LCD operation board 12 that uses in this system adopts the building 86 panel type Installation Modes of standard, and highly versatile is installed.
Consider that a lot of application scenarios implement centralized Control to central air conditioner system, the idle call frequency converter of band DDC control function, frequency converter inner integrated RTU (Remote Terminal Unit) functional unit.
As shown in Figure 3, under the communication mode of operation, the air-conditioning special converter 13 of entire belt DDC control function can be controlled the terminal air conditioner unit of central air conditioner system (AHU) 14 directly as field controller.When keeping its independent operating function, also can pass through the Communication Control bus, as the RS-485 bus, by the Communication Control mode, system is realized the centralized Control of remote monitoring and whole air-conditioning system by supervisory controller.
Above-mentioned idle call frequency converter makes full use of the basic software/hardware configuration of universal frequency converter, DDC is set in the interface port of frequency converter controls needed a small amount of I/O port; And make full use of frequency converter master control borad one-chip CPU or the very abundant command function of dsp chip, on the basis that keeps former frequency converter instructions/functions, in its microprogram development, embed DDC control microprogram simultaneously, the peripheral DDC special I/O port that is equipped with, make frequency converter on the function basis that keeps its former function, additionally had general air-conditioning and controlled needed DDC control function; In addition, the air-conditioning special converter of band DDC function, general RS-485 communication interface and LCD Chinese interface operator have also been disposed, to be fit to the site environment operation of general unskilled persons, or carry out the multimachine operated from a distance by the RS-485 communication interface, can use as on-the-spot main control unit on the terminal air conditioner unit device of most of central air-conditioning, more traditional " frequency converter+DDC controller " scheme has the remarkable economical technical advantage.
More than show and described basic principle of the present utility model and principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; that describes in the foregoing description and the specification just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (4)
1. the idle call frequency converter of band DDC control function comprises an idle call frequency converter, it is characterized in that, is provided with the DDC control module that makes frequency converter have DDC control function in the described frequency converter, also is provided with DDC control module control I/O port on the described frequency converter.
2. the idle call frequency converter of band DDC control function according to claim 1 is characterized in that, also is provided with the RTU module that can carry out telecommunication by control bus and host computer in the described frequency converter.
3. the idle call frequency converter of band according to claim 1 and 2 DDC control function is characterized in that described frequency converter also disposes the LCD operator of a Chinese interface, and it comprises the LCD screen of function corresponding operated key and display parameters, state.
4. the idle call frequency converter of band according to claim 3 DDC control function is characterized in that, adopts the light current patch cable to be connected between described LCD operator and the frequency converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200697547U CN201575555U (en) | 2009-04-01 | 2009-04-01 | Converter with DDC control function for air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200697547U CN201575555U (en) | 2009-04-01 | 2009-04-01 | Converter with DDC control function for air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201575555U true CN201575555U (en) | 2010-09-08 |
Family
ID=42695432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200697547U Expired - Fee Related CN201575555U (en) | 2009-04-01 | 2009-04-01 | Converter with DDC control function for air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201575555U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105588264A (en) * | 2015-04-28 | 2016-05-18 | 海信（山东）空调有限公司 | Air conditioner control system and method |
-
2009
- 2009-04-01 CN CN2009200697547U patent/CN201575555U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105588264A (en) * | 2015-04-28 | 2016-05-18 | 海信（山东）空调有限公司 | Air conditioner control system and method |
| CN105588264B (en) * | 2015-04-28 | 2019-04-16 | 海信（山东）空调有限公司 | A kind of air-conditioner control system and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108895624A (en) | A kind of one-to-one air-conditioner control system and control method | |
| WO2019042042A1 (en) | Control method and device for air conditioner | |
| CN201302256Y (en) | Textile air conditioner used constant temperature and humidity variable air volume control system | |
| CN205372913U (en) | Power distributing type ventilation system | |
| CN1687852A (en) | Digitalized control energy-saving method for central air conditioner | |
| CN102032642A (en) | Control method of inverter air conditioner | |
| CN102721151A (en) | Humidification control device and control method thereof | |
| CN103047737A (en) | Air supply temperature control method of variable air quantity air conditioning system | |
| CN201964577U (en) | Energy-saving control system for central air conditioner | |
| CN201575555U (en) | Converter with DDC control function for air conditioner | |
| CN102563820B (en) | Evaporative air cooler for communication base station/machine room, and anti-condensation method of evaporative air cooler | |
| CN201697266U (en) | Constant-temperature and constant-humidity controller capable of automatically adjusting ratio of primary return air to secondary return air | |
| WO2019100716A1 (en) | Cabinet, cabinet operation control method and device | |
| CN210107615U (en) | New fan system | |
| CN203928297U (en) | For central air-conditioning wind system by time frequency conversion air feed system | |
| CN106440269A (en) | Centralized control system and method for machine room air conditioner unit group | |
| CN206861813U (en) | A kind of heat-air conditioner energy-saving control system | |
| CN202254115U (en) | -48V direct-current variable-frequency speed-reduction temperature control system | |
| CN201615562U (en) | Novel fresh air system of machine room | |
| CN205403281U (en) | Controlling means of outdoor condenser cooling amount of wind | |
| CN104534639B (en) | Intelligent composite tuyere system | |
| CN203385112U (en) | Constant temperature and humidity air-cooled variable frequency air conditioner | |
| CN201903133U (en) | Intelligent temperature and humidity control cabinet for central air conditioner | |
| CN202813649U (en) | Energy saving operation control system of central air conditioning ventilation system | |
| CN103149895B (en) | A kind of building automation method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20100908 Termination date: 20150401 |
|
| EXPY | Termination of patent right or utility model |