CN201323001Y - Central air conditioning system simulation and training device - Google Patents
Central air conditioning system simulation and training device Download PDFInfo
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- CN201323001Y CN201323001Y CNU2008202063664U CN200820206366U CN201323001Y CN 201323001 Y CN201323001 Y CN 201323001Y CN U2008202063664 U CNU2008202063664 U CN U2008202063664U CN 200820206366 U CN200820206366 U CN 200820206366U CN 201323001 Y CN201323001 Y CN 201323001Y
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Abstract
The utility model relates to the technical field of laboratory equipment combined with teaching, in particular to a simulation and training device which provides students with the programming exercise. The device comprises a refrigeration system unit, an electrical control unit, an air supply unit, a room model unit, an air channel unit and a water-cooling unit; all units are integrated organically so as to form a miniature central air conditioner system, and are fixed on the same base so as to form the simulation and training device; wherein the refrigeration system unit comprises a compressor, a condenser, a evaporator and a expansion valve; the electrical control unit is provided with a DDC controller and can carrying programming though the PC and DCC controller of a central station; and the air channel unit is communicated with the air supply unit and the room model unit to form an air circuit. The device can carry out the system operation demonstration of starting up and shutting down and the simulation load demonstration of the system, and can adjust the jaw opening of a three-way control valve so as to adjust the flow rate of the chilled water flowing to a fan coil. The device is an ideal simulation and training device used for studying the basic structure of the central air conditioner system, control principle and parameter testing.
Description
Technical field:
The utility model relates to teaching experiments supporting equipment technical field, refers in particular to a kind of for student's simulation and training device of practising programming.
Background technology:
In intelligent building, central air conditioner system is to adapt to people's comfortableness demand and the ultimate system that generally is provided with, the raising that this system will require quality of life along with people and the development of central air conditioner technology, on application and designing technique, constantly improve, from the construction in the intelligent building of present China, this system has been commonplace.
Known, teaching can make the student deepen institute and gain knowledge in conjunction with real training, improves manipulative ability.For study programming (as the programming of PLC programming, DDC controller), real training is then even more important.At present, actual training device for programming is limited, then lack as programming exercise apparatus, cause the student can not be from the knowledge such as basic structure, control principle and parameter testing of perception study central air conditioner system for the programmed control of above-mentioned central air conditioner system.
How control technology is attached on the teaching and training device, allows the student undergo gain knowledge, then become the problem of paying close attention in the industry in the situation of practical application.
Summary of the invention:
The purpose of this utility model is to provide a kind of teaching that cooperates, and makes things convenient for the student to go up manual manipulation and control programming and also can allow the student's central air conditioner system model actual training device of gain knowledge in the situation of practical application that undergo.
Another purpose of the utility model provides a kind of central air conditioner system model actual training device, to expand teaching experiments supporting equipment, promotes teaching to combine with the scene, deepens student's understanding.
For achieving the above object, the utility model adopts following technical scheme:
Central air conditioner system model actual training device, this device includes refrigeration system unit, electric control unit, blowing unit, room model unit, unit, air channel and water-cooled unit, all unit organic combinations together, form miniature central air conditioner system, and be fixed on the same pedestal component model actual training device; Wherein, the refrigeration system unit contains compressor, condenser, evaporator and expansion valve; Electric control unit is provided with the DDC controller, can pass through the PC of central station to the DCC controller programming; The unit, air channel is communicated with blowing unit and room model unit, forms air loop; The work of water-cooled unit matching refrigeration system.
Blowing unit is positioned at model unit top, room, and model unit bottom, room side has the air outlet unit of giving a dinner for a visitor from afar, and the unit, air channel is provided with two by-pass ports, and a by-pass port is used for the part room air is discharged, and another by-pass port sucks the air channel with the new air of outside; Two by-pass ports are equipped with adjustable valve, with the air quantity of control turnover.
This central air conditioner system simulation and training device can be done the system operation demonstration of startup-shutdown, the simulation load demonstration of system; dynamic observing of outdoor temperature, indoor temperature and chilled water supply and return water temperature and chilled water Inlet and outlet water temperature; and can regulate the aperture of three-way control valve; thereby being adjusted to the flow of the chilled water of fan coil, is the desirable practice-training teaching device of basic structure, control principle and the parameter testing of study central air conditioner system.
Description of drawings:
Accompanying drawing 1 is a structural representation of the present utility model.
The drawing reference numeral explanation:
10 refrigeration system unit, 20 electric control units, 30 blowing units
Unit, 40 room model units, 50 air channel 60 water-cooled unit 21DDC controllers
51,52 by-pass ports, 53 valves
Embodiment:
Below in conjunction with accompanying drawing the utility model is described further:
Consult shown in Figure 1, central air conditioner system model actual training device described in the utility model, include refrigeration system unit 10, electric control unit 20, blowing unit 30, room model unit 40, unit, air channel 50 and water-cooled unit 60, all unit organic combinations together, form miniature central air conditioner system, and be fixed on the same pedestal component model actual training device; Wherein, refrigeration system unit 10 contains compressor, condenser (plate type heat exchanger), evaporator (plate type heat exchanger), heating power expansion valve (inner equilibrium formula), reservoir, liquid-sighting glass, high pressure gauge, low-pressure meter, pressure reduction relay etc.; Electric control unit 20 is provided with DDC controller 21, and the PC that can pass through central station is to the DCC controller programming, and convenient study is programmed; Unit, air channel 50 is communicated with blowing unit 30 and room model unit 40, forms air loop; Water-cooled unit 60 cooperates refrigeration system work.
In the present embodiment, blowing unit 30 is positioned at room model unit 40 tops, model unit 40 bottom sides in room have the air outlet unit 50 of giving a dinner for a visitor from afar, unit, air channel 50 is provided with two by- pass ports 51,52, wherein by-pass port 51 is positioned at the end of air draft part, be used for the old air of part is discharged, another by-pass port 52 is positioned at air intake part end, the new air of outside can be sucked the air channel; Two by- pass ports 51,52 are equipped with adjustable valve 53, and with the air quantity of control turnover, valve 53 can manual or electronic control.
During experiment, can realize manual operation or operation automatically, automatically should guarantee to be loaded with down in the DDC controller the intact control program of modulated examination during operation, the watchdog routine that workstation (host computer) also has configuration to finish, and workstation (host computer) correctly links to each other with the DDC controller.The air switch of opening power, hand/the automatic change over of each equipment is screwed into " automatically " position, open workstation (host computer) power supply, operation central station watchdog routine, with click " system start-up " or " system stops " icon, system will finish the automatic operation of unit according to the unit equipment boot sequence of finishing in advance automatically or stop at the central air conditioner monitored picture.
In the present embodiment, controller is selected the Excel XL50 controller of Honeywell company for use, expand 2 of XFL523B switching input modules simultaneously, Excel 50 controllers itself have the input of 4 way switch amounts, the output of 6 way switch amounts, the input of 8 tunnel analog quantitys, the output of 4 tunnel analog quantitys; The XFL523B switching input module has 12 way switch amount input circuits.The load loading in simulation room etc. is also controlled in the startup of major control handpiece Water Chilling Units, chilled water pump, cooling-water pump, cooling tower, fan coil, exhaust blower etc./stop simultaneously.Main observing and controlling parameter: the switching value that system detects comprises the running status of handpiece Water Chilling Units, chilled water pump, cooling-water pump, cooling tower, fan coil, exhaust blower and fault alarm etc., and chilled water flow switch, cooling water flow switch, cooling tower high water stage, low-water level.The analog quantity that system detects comprises chilled water inflow temperature, chilled water leaving water temperature, cold in-water temperature, chilled water leaving water temperature, chilled water intake pressure, chilled water discharge pressure, room temperature, room humidity, chilled-water flow etc.
Device can adopt two kinds of control models to comprise automatic mode and manual mode; During automatic control mode, all devices starts/stops the control by DDC, and controlled condition is judged system's operation with closed ring according to the relevant environment condition that DDC gathers.Manually during control model, the startup of every equipment/stop to control separately by electrical control startup, stop button cashier's office in a shop, equipment has nothing to do with the control of DDC controller; Automatic mode need be worked out the DDC control program.
Compressor adopts the rotary idle call compressor of totally enclosed type, and compressor carries gas-liquid separator (also claiming reservoir), and high efficiency, Energy Efficiency Ratio is big, noise is little, but hull-skin temperature is than higher; Heat interchanger adopts the scholar of Denver high-performance plate fin heat interchanger, like this heat exchange effect of condenser and evaporator understand relatively good, thereby make the physical dimension of the heat interchanger compact and reasonable that seems; Because the evaporator resistance ratios is less, so expansion valve adopts inner equilibrium formula heating power expansion valve, the little function of this device profile is strong; Reservoir is the fluid storage that condenser is produced, and makes the heat interchanging area of condenser reach design area, and the heat exchange effect reaches design effect; Tensimeter is to be with oily high pressure gauge and to be with oily low-pressure meter, and this tensimeter shows that accurately failure rate is low, reads the saturation temperature under the saturation pressure in can also from then on showing in addition; The pressure reduction relay at high pressure too high or low pressure cross and lowly all can move, thereby compressor is quit work, play the effect of protection compressor, can be after its action from horizontal reset, must hand-reset.
The water-cooled unit is made up of chilled water system, cooling water system and condensate system, and the device collocation is reasonable, and flow process is simple and clear, and pipeline is equipped with articulation, the easy disassembly transportation.Wind system is mainly used the air circulation in room, and the air in discharge section room when being necessary, suck the outdoor fresh air of part, make room air both play comfortable temperature and humidity requirement, can make room air keep certain malleation and freshness again.Air channel integral body is " worker " word structure, and air is through the cooling coil outside surface heat release of fan coil, air themperature descend (chilled water temperature rising), send into the room, the heat of the room thermal load of absorbing heat again, air themperature rises, deliver to fan coil through backwind tube and cool off, reciprocation cycle; It is outdoor that cyclic process has the part room air to drain into through by-pass port 51, has the new wind of part to enter through by-pass port 52.
This central air conditioner system simulation and training device can be done the system operation demonstration of startup-shutdown, the simulation load demonstration of system; dynamic observing of outdoor temperature, indoor temperature and chilled water supply and return water temperature and chilled water Inlet and outlet water temperature; and can regulate the aperture of three-way control valve; thereby being adjusted to the flow of the chilled water of fan coil, is the desirable practice-training teaching device of basic structure, control principle and the parameter testing of study central air conditioner system.
Claims (3)
1, central air conditioner system model actual training device, it is characterized in that: this device includes refrigeration system unit, electric control unit, blowing unit, room model unit, unit, air channel and water-cooled unit, all unit organic combinations together, form miniature central air conditioner system, and be fixed on the same pedestal component model actual training device; Wherein, the refrigeration system unit contains compressor, condenser, evaporator and expansion valve; Electric control unit is provided with DDC controller, relay, switch, button and pilot lamp etc., can pass through the PC of central station to the DCC controller programming; The unit, air channel is communicated with blowing unit and room model unit, forms air loop; The work of water-cooled unit matching refrigeration system.
2, central air conditioner system model actual training device according to claim 1, it is characterized in that: blowing unit is positioned at model unit top, room, model unit bottom, room side has the air outlet unit of giving a dinner for a visitor from afar, the unit, air channel is provided with two by-pass ports, one by-pass port is used for the part room air is discharged, and another by-pass port sucks the air channel with the new air of outside.
3, central air conditioner system model actual training device according to claim 2, it is characterized in that: two by-pass ports on the unit, air channel are equipped with adjustable valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202063664U CN201323001Y (en) | 2008-12-24 | 2008-12-24 | Central air conditioning system simulation and training device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202063664U CN201323001Y (en) | 2008-12-24 | 2008-12-24 | Central air conditioning system simulation and training device |
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| Publication Number | Publication Date |
|---|---|
| CN201323001Y true CN201323001Y (en) | 2009-10-07 |
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| CNU2008202063664U Expired - Fee Related CN201323001Y (en) | 2008-12-24 | 2008-12-24 | Central air conditioning system simulation and training device |
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| CN (1) | CN201323001Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103258470A (en) * | 2013-05-08 | 2013-08-21 | 四川大学 | Three-dimensional structure operation visual teaching practical training device with semi-concentration type air conditioner system |
| CN103337210A (en) * | 2013-06-20 | 2013-10-02 | 中山市技师学院 | Three-in-one device with teaching demonstration, practical training and examination functions |
| CN105222292A (en) * | 2015-08-21 | 2016-01-06 | 浙江理工大学 | All-air conditioning experimental system |
| CN105404177A (en) * | 2015-12-11 | 2016-03-16 | 贵州汇通华城股份有限公司 | All-air air conditioning simulation system |
| CN105513454A (en) * | 2016-01-28 | 2016-04-20 | 浙江亚龙教育装备股份有限公司 | Central air-conditioner practical training device |
| CN106652749A (en) * | 2016-12-30 | 2017-05-10 | 武汉华育诺为信息技术有限公司 | Air conditioner practical training device |
-
2008
- 2008-12-24 CN CNU2008202063664U patent/CN201323001Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103258470A (en) * | 2013-05-08 | 2013-08-21 | 四川大学 | Three-dimensional structure operation visual teaching practical training device with semi-concentration type air conditioner system |
| CN103258470B (en) * | 2013-05-08 | 2016-03-30 | 四川大学 | A kind of spatial structure runs visual semi-central air conditioning teaching training apparatus |
| CN103337210A (en) * | 2013-06-20 | 2013-10-02 | 中山市技师学院 | Three-in-one device with teaching demonstration, practical training and examination functions |
| CN105222292A (en) * | 2015-08-21 | 2016-01-06 | 浙江理工大学 | All-air conditioning experimental system |
| CN105222292B (en) * | 2015-08-21 | 2018-06-26 | 浙江理工大学 | All-air conditioning experimental system |
| CN105404177A (en) * | 2015-12-11 | 2016-03-16 | 贵州汇通华城股份有限公司 | All-air air conditioning simulation system |
| CN105513454A (en) * | 2016-01-28 | 2016-04-20 | 浙江亚龙教育装备股份有限公司 | Central air-conditioner practical training device |
| CN106652749A (en) * | 2016-12-30 | 2017-05-10 | 武汉华育诺为信息技术有限公司 | Air conditioner practical training device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091007 Termination date: 20111224 |