CN2594705Y - Water-pump energy-saving controller of central air-conditioner - Google Patents
Water-pump energy-saving controller of central air-conditioner Download PDFInfo
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- CN2594705Y CN2594705Y CN 02290191 CN02290191U CN2594705Y CN 2594705 Y CN2594705 Y CN 2594705Y CN 02290191 CN02290191 CN 02290191 CN 02290191 U CN02290191 U CN 02290191U CN 2594705 Y CN2594705 Y CN 2594705Y
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- circuit
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- input
- main control
- central air
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Abstract
The utility model relates to a water-pump energy-saving controller of a central air conditioner. The utility model is characterized in that the water-pump energy-saving controller is composed of an in-mould conditioning circuit and a main control circuit, wherein the input end of the in-mould conditioning circuit is respectively connected with a temperature sensor and a pressure sensor which are arranged at the inlet and the outlet of a freezing water main pipe and a cooling water main pipe; the output end of the in-mould conditioning circuit is connected with the input end of the main control circuit, and the output end of the main control circuit is connected with a frequency changer. The utility model has the advantages that a large amount of power can be saved, various kinds of manual operation are changed into automatic control, and the operating safety is enhanced.
Description
The utility model belongs to a kind of control appliance, particularly a kind of central air-conditioning pump energy saving controller.
Central air conditioner system is the equipment of place indispensabilities such as each big hotel, restaurant, senior office building.In central air conditioner system, adopt cooling water pump and chilled water pump full load operation that the heat exchange by the air-conditioning unit of the heat of refrigeration space is distributed.The effect of cooling, chilled water pump is in the regular hour, transmits the place that a certain amount of water arrives to be needed, and finishes exchange heat.At present air-conditioning water pump control situation is: the cold and hot what state of outside air no matter, the consumption of refrigeration space cold what, freezing, cooling water pump is exactly running with all strength at full capacity in case drop into.At this moment, generally control discharge, and water pump consumes electric power much at one still in full-speed operation by the valve of closing on the pipeline.
The purpose of this utility model just is to overcome above-mentioned the deficiencies in the prior art, and a kind of energy-saving controller that can control the water pump in the central air conditioner system is provided.
As above design, the technical solution of the utility model is:
A kind of central air-conditioning pump energy saving controller is characterized in that: go into modulate circuit and main control circuit is formed by mould; Wherein the mould input of going into modulate circuit is connected with pressure sensor with the temperature sensor at the import and export place that is installed in chilled water house steward and cooling water house steward respectively; The output that mould is gone into modulate circuit is connected with the input of main control circuit, the output of main control circuit is connected with frequency converter: described mould is gone into modulate circuit by bridge circuit, filter circuit, variable connector, amplifying circuit is formed with road selected control system circuit: bridge circuit is connected with the input of variable connector respectively, the output of variable connector is connected with the input of amplifying circuit respectively: the input of road selected control system circuit is connected with master board, and output is connected with variable connector: main control circuit is by controller and the timer that is attached thereto, program storage, data storage, digital display and keyboard are formed.
Above-mentioned bridge circuit partly comprises eight tunnel identical bridge circuits, and its power supply is provided by transformer LM337T.
Above-mentioned variable connector is selected two chip DG508ACJ for use, its 8 passage IN1-IN8 respectively with the output of corresponding bridge circuit connect; Its output pin OUT is connected with the input of amplifying circuit respectively.
Above-mentioned amplifying circuit is selected amplifier AD625JN for use, and its input IN-is connected with the output of variable connector chip DG508ACJ respectively with IN+, its output VOUT outputting standard analog voltage signal.
Above-mentioned road selected control system circuit is selected latch SN74LS365A for use, and its input is connected with main control unit, and output is connected with the input of variable connector chip DG508ACJ respectively.
Controller in the above-mentioned main control circuit is selected 8098 single-chip microcomputers for use, and its ACH4 end is connected with the output that mould is gone into modulate circuit, and HSO0, HSO1, PSW control alarm, frequency converter 2, frequency converter 1 respectively; Decoder is selected 74LS138 for use, its input 1,2,3 respectively with the A of 8098 single-chip microcomputers
13, A
14, A
15End connects; 8098 AD
0-AD
7D with latch 74LS373
0-D
7Connect the Q of latch 74LS373
0-Q
7Respectively with the A of program storage EPROM27128
0-A
7The A of end and data storage 6264RAM
0-A-holds connection, the D of program storage EPROM27128
0-D
7The 6264RAM D of end and data storage
0-D
7End respectively with 8098 AD
0-AD
7End connects, and chip 8155 is parallel I/O mouth expansions, its AD
0-AD
7Meet 8098 AD
0-AD
7Address and data wire are multiplexing, the AD of A port
0-AD
7Connect digital demonstration, the AD of C port
0-AD
4Connect the digital control end that shows, the AD of control A port
0-AD
7The data of output show B port PB on which number
0-PB
4Connect keyboard, it reads in and send CPU with the data of keyboard.
Operation principle of the present utility model is: the temperature sensor and the pressure sensor of the import and export by being installed in chilled water house steward and cooling water house steward are measured water temperature and hydraulic pressure respectively.By temperature difference induction air conditioner load.Change by pressure signal, the working condition of induction chilled water pipeline and cooling water pipeline, detected temperature signal of sensor and pressure signal are sent to mould and go into conditioning plate and change the signal of telecommunication into, send into main control unit, deposit the data field in after analog-to-digital conversion, control algolithm is handled according to the temperature and pressure data that detect, send the frequency adjustment signal to frequency converter, under the normal operation conditions, send the frequency adjustment signal: under the misoperation situation, send relevant switching signal and alarm signal.
The utility model has the advantages that 1, adopt advanced converter technique to control the rotating speed of water pump, adapting to the variation of load, because the cube of the frequency of the consumption of electric energy and motor is directly proportional, so can save a large amount of electric power.2, be control automatically with various manual operations, change the randomness of manual operation, improve the security of operation.
Below in conjunction with drawings and Examples the utility model is further described:
Fig. 1 is a structured flowchart of the present utility model
Fig. 2 goes into the modulate circuit logic diagram for mould
Fig. 3 is the electrical schematic diagram of Fig. 2
Fig. 4 is the logic diagram of main control circuit
Fig. 5 (a) is the electrical schematic diagram of Fig. 4
Fig. 5 (b) the two poles of the earth filter circuit schematic diagram
As shown in the figure, a kind of central air-conditioning pump energy saving controller is characterized in that: mould goes into modulate circuit and main control circuit is formed; Wherein the mould input of going into modulate circuit is connected with pressure sensor with the temperature sensor at the import and export place that is installed in chilled water house steward and cooling water house steward respectively; The output that mould is gone into modulate circuit is connected with the input of main control circuit, and the output of main control circuit is connected with frequency converter; Described mould is gone into modulate circuit and is made up of bridge circuit, filter circuit, variable connector, amplifying circuit and road selected control system circuit; Bridge circuit is connected with the input of variable connector respectively, and the output of variable connector is connected with the input of amplifying circuit respectively; The input of road selected control system circuit is connected with master board, and output is connected with variable connector; Main control circuit is made up of single-chip microcomputer and the timer, program storage, data storage, digital display and the keyboard that are attached thereto.
The bridge circuit that above-mentioned mould is gone in the modulate circuit partly comprises eight tunnel identical bridge circuits, its power supply is provided by transformer LM337T: variable connector is selected two chip DG508ACJ for use, amplifying circuit is selected amplifier AD625JN for use, and road selected control system circuit is selected latch SN74LS365A for use.8 passage IN1-IN8 of variable connector chip DG508ACJ respectively with the output of corresponding bridge circuit connect.Behind the current signal corresponding resistance of process and capacitor filtering that bridge circuit produces, send to respectively in 8 passages of two variable connectors.The output pin OUT of two variable connectors is connected with IN+ with the input IN-of amplifier AD625JN respectively.The output VOUT outputting standard analog voltage signal 1 of amplifier is as the final output of this testing circuit.The latch SN74LS365A that selects for use through passageway selected control system circuit from three lead-in wires of CP1, the CP2 of master board, CP3 is connected with A1, A2, the A3 end of two variable connector chip DG508ACJ respectively, and three lead-in wires are selected the passage IN1-IN8 of DG508ACJ thus.
The utility model adopts 8098 single-chip microcomputers as controller, and the ACH4 of P0 mouth is as the inlet of gathering signal, and mould is gone into the output of modulate circuit and sent into main control unit by ACH4, and HSO0, HSO1, PSW control alarm, frequency converter 2, frequency converter 1 respectively.System is furnished with timer in addition, digital demonstration, program storage, data storage and keyboard.8098 single-chip microcomputers are core components of main control unit, and the work of entire controller is all finished under 8098 Single-chip Controlling, the A of 74LS138 decoder input termination 8908
15, A
14, A
13, the input chip selection signal, as the chip selection signal of extended chip, each extended chip of gating.74LS373 is a latch, and EPROM27128 is a program storage.8098 AD
0-AD
7D with latch 74LS373
0-D
7Connect the Q of latch 74LS373
0-Q
7Respectively with the A of program storage EPROM27128
0-A
7The A of end and data storage 6264RAM
0-A
7End connects, the D of program storage EPROM27128
0-D
7The 6264RAM D of end and data storage
0-D
7End respectively with 8098 AD
0-AD
7End connects.EPROM27128 is delivered to through latch in the address of the instruction that 8098 single-chip microcomputers will be carried out, under the control of RD, from the D of EPROM27128
0-D
7The sense order data are through 8098 AD
0-AD
7Sending into CPU carries out.6264RAM is a data storage, and its work is similar with EPROM27128, and the difference of the two is that EPROM27128 is read-only, and the 6264RAM read-write, so 6264RAM will have WE control.Chip 8155 is parallel I/O mouth expansions, its AD
0-AD
7Meet 8098 AD
0-AD
7Address and data wire are multiplexing, the AD of A port
0-AD-connects digital demonstration, the AD of C port
0-AD
4Connect the digital control end that shows, the AD of control A port
0-AD
7The data of output show B port PB on which number
0-PB
4Connect keyboard, CPU is read in and sent to the data that it falls keyboard, when key is pressed, sends interrupt signal by CD4068 to the EXTINT of CPU end, and system handles keyboard operation by external interrupt.PB
5-PB
7Go into the channel selecting signal output of modulate circuit as mould.
Utilize an external clock through the later input signal of 8155 chip frequency divisions as 8098 on-chip timer t2.After the t2 counter overflows, produce an interrupt signal, to obtain a time-delay for a long time.By setting the time constant of 8155 chips, can obtain a fixing sampling period.System carries out data acquisition by this interruption.
The two-stage filter circuit is connected with 8098 single-chip microcomputers, and the cyclic pulse signal that the cycle is fixed, pulse width is variable of 8098 output is converted to analog signal, promptly realizes the D/A conversion, in order to the control voltage as the frequency conversion quality.Set the pulse signal of certain frequency and dutycycle can be directly as the driving voltage of alarm.
Claims (6)
1, a kind of central air-conditioning pump energy saving controller is characterized in that: go into modulate circuit and main control circuit is formed by mould; Wherein the mould input of going into modulate circuit is connected with pressure sensor with the temperature sensor at the import and export place that is installed in chilled water house steward and cooling water house steward respectively; The output that mould is gone into modulate circuit is connected with the input of main control circuit, and the output of main control circuit is connected with frequency converter; Described mould is gone into modulate circuit and is made up of bridge circuit, filter circuit, variable connector, amplifying circuit and road selected control system circuit; Bridge circuit is connected with the input of variable connector respectively, and the output of variable connector is connected with the input of amplifying circuit respectively; The input of road selected control system circuit is connected with main control circuit, and output is connected with variable connector; Main control circuit is made up of controller and the timer, program storage, data storage, digital display and the keyboard that are attached thereto.
2, central air-conditioning pump energy saving controller according to claim 1, it is characterized in that: above-mentioned bridge circuit partly comprises eight tunnel identical bridge circuits, and its power supply is provided by transformer LM337T.
3, central air-conditioning pump energy saving controller according to claim 1, it is characterized in that: above-mentioned variable connector is selected two chip DG508ACJ for use, its 8 passage IN1-IN8 respectively with the output of corresponding bridge circuit connect; Its output pin OUT is connected with the input of amplifying circuit respectively.
4, central air-conditioning pump energy saving controller according to claim 1, it is characterized in that: above-mentioned amplifying circuit is selected amplifier AD625JN for use, its input IN-is connected with the output of variable connector chip DG508ACJ respectively with IN+, its output VOUT outputting standard analog voltage signal.
5, central air-conditioning pump energy saving controller according to claim 1, it is characterized in that: above-mentioned road selected control system circuit selects for use its input of latch SN74LS365A to be connected with main control unit, and output is connected with the input of variable connector chip DG508ACJ respectively.
6, central air-conditioning pump energy saving controller according to claim 1, it is characterized in that: the controller in the above-mentioned master board is selected 8098 single-chip microcomputers for use, its ACH4 end is connected with the output that mould is gone into modulate circuit, and HSO0, HSO1, PSW control alarm, frequency converter 2, frequency converter 1 respectively; Decoder is selected 74LS138 for use, its input 1,2,3 respectively with the A of 8098 single-chip microcomputers
13, A
14, A
15End connects: 8098 AD
0-AD
7D with latch 74LS373
0-D
7Connect the Q of latch 74LS373
0-Q
7Respectively with the A of program storage EPROM27128
0-A
7The A of end and data storage 6264RAM
0-A
7End connects, the D of program storage EPROM27128
0-D
7The 6264RAM D of end and data storage
0-D
7End respectively with 8098 AD
0-AD
7End connects; Chip 8155 is parallel I/O mouth expansions, its AD
0-AD
7Meet 8098 AD
0-AD
7Address and data wire are multiplexing, the AD of A port
0-AD
7Connect digital demonstration, the AD of C port
0-AD
4Connect the digital control end that shows, the AD of control A port
0-AD
7The data of output show B port PB on which number
0-PB
4Connect keyboard, it reads in and send CPU with the data of keyboard.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02290191 CN2594705Y (en) | 2002-12-31 | 2002-12-31 | Water-pump energy-saving controller of central air-conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02290191 CN2594705Y (en) | 2002-12-31 | 2002-12-31 | Water-pump energy-saving controller of central air-conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2594705Y true CN2594705Y (en) | 2003-12-24 |
Family
ID=33749517
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02290191 Expired - Fee Related CN2594705Y (en) | 2002-12-31 | 2002-12-31 | Water-pump energy-saving controller of central air-conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2594705Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1297787C (en) * | 2004-07-20 | 2007-01-31 | 贵州华城楼宇科技有限公司 | Chilled water energy-saving apparatus of cental air conditioner |
| CN1300517C (en) * | 2004-10-11 | 2007-02-14 | 宁波华液机器制造有限公司 | Energy saving control system of frequency conversion in use for central air condition |
| CN104566844A (en) * | 2013-10-18 | 2015-04-29 | 宁夏先锋软件有限公司 | Central air conditioner energy-saving unit |
-
2002
- 2002-12-31 CN CN 02290191 patent/CN2594705Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1297787C (en) * | 2004-07-20 | 2007-01-31 | 贵州华城楼宇科技有限公司 | Chilled water energy-saving apparatus of cental air conditioner |
| CN1300517C (en) * | 2004-10-11 | 2007-02-14 | 宁波华液机器制造有限公司 | Energy saving control system of frequency conversion in use for central air condition |
| CN104566844A (en) * | 2013-10-18 | 2015-04-29 | 宁夏先锋软件有限公司 | Central air conditioner energy-saving unit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |