CN200950220Y

CN200950220Y - Intelligentized controller for thermal pump water heater

Info

Publication number: CN200950220Y
Application number: CN 200520045328
Authority: CN
Inventors: 汪辉; 何丽华; 华建跃
Original assignee: Shanghai Highly Group Co Ltd
Current assignee: Shanghai Highly Group Co Ltd
Priority date: 2005-09-27
Filing date: 2005-09-27
Publication date: 2007-09-19
Anticipated expiration: 2015-09-27

Abstract

An intelligence control device for heat pump water heaters mainly comprises a liquid crystal display hand operator and a main control panel. The data exchange between the liquid crystal display hand operator and the main control panel adopts the RS485 interface circuit. The liquid crystal display hand operator mainly comprises a central control chip, a liquid crystal display module, a communication interface circuit, a calendar and clock chip, a keystroke input circuit and a LED digital display circuit. The main control panel mainly comprises a central control chip, a sampling circuit, a communication interface circuit, an output drive circuit and a relay unit, a three-terminal voltage regulator circuit. The utility model has a simple hardware circuit, realizes the intelligence control of the heat pump water heater, is easy to control, works steadily and has a perfect protection function, a strong capacity of resisting disturbance and a long distance of communication. The utility model maintains the time data automatically after the power cut, provides a plurality of timing start functions and sets the night operation model, thus achieving the obvious power-saving effect.

Description

The Intellectualized controller of Teat pump boiler

Technical field

The utility model relates to the water heater automaton, specifically refers to a kind of Intellectualized controller of Teat pump boiler.

Background technology

Existing Teat pump boiler generally comprises one and is communicated with the refrigerant circulation loop of forming 10 and in order by compressor 1, four-way valve 2, water heat exchanger 3, throttle mechanism 4, air heat exchanger 5, compressor 1 and is communicated with the hot water circulation loop of forming 20 in order by water heat exchanger 3, water pump 21, boiler 22, water heat exchanger 3.Its control device is made up of main control circuit and digital display tube, because relatively simple for structure, obviously have following defective: (1) function and displaying contents are simple; (2) can not be optimized control to the operation of Teat pump boiler; (3) control signal adopts direct line, and communication distance is short, poor anti jamming capability; (4) can not provide calendar and clock equal time data, no time multistage timesharing starts function; (5) do not have the real time fail inspection, safeguard inconvenient.

Summary of the invention

The purpose of this utility model is to propose a kind of Intellectualized controller of Teat pump boiler, by adopting IC chip and the intelligent software of band CPU, so that required every control function to be provided, thereby overcome the defective of prior art, make Teat pump boiler operate in optimum condition.

The Intellectualized controller of a kind of Teat pump boiler of the present utility model mainly comprises two parts: liquid crystal display manual operator 100 and master control borad 200, the exchange data using RS485 interface circuit between liquid crystal display manual operator 100 and the master control borad 200.The FPDP of liquid crystal display manual operator 100 is connected with the FPDP of its communication interface circuit 103, the FPDP of master control borad 200 links to each other with the FPDP of its communication interface circuit 203, and be connected the data communication between realization liquid crystal display manual operator 100 and the master control borad 200 with interface circuit 103 on the liquid crystal manual operator by this interface circuit 203.

The major function of liquid crystal manual operator 100 provides the operation interface of flexible and convenient, mainly comprises the digital display circuit 106 of central control chip 101, LCD MODULE 102, communication interface circuit 103, calendar clock chip 104, button inputting circuits 105 and LED.LCD MODULE 102 links to each other with central control chip 101 data terminals, and button inputting circuits 105, calendar clock chip 104 link to each other with the input end of central control chip 101, and the digital display circuit 106 of LED links to each other with the output terminal of central control chip 101; Central authorities' control chip 101 is a central processor CPU 1, and its FPDP is connected with the FPDP of communication interface circuit 103, and realizes data communication by interface circuit 103 and master control borad 200; LCD MODULE 102 adopts full Chinese fonts lcd module, clear, easy user interface can be provided, the state that not only shows each setting value, each switch, running status that can also real time inquiry system, as water tank temperature, outdoor environment temperature, outdoor coil pipe used temperature, heat exchange temperature, the high and low pressure of compressor, thermistor open circuit short trouble, communication failure etc., for the maintainer provides detailed failure logging, increase maintainability, and improved the self-shield ability under the failure condition; Calendar clock chip 104 has included the perpetual calendar algorithm, year, month, day, hour, minute equal time information can be provided in real time, and be provided with the power source special holding circuit, have the power-failure memory function, after electric control gear re-powers, can recover correct time data immediately; Button inputting circuits 105 is made up of the button that several can carry out input operation, its output terminal links to each other with the input end of CPU1, can import necessary instruction and data easily, as " switch ", " initialization ", " entering timing setting and status poll interface ", " data validation operation " and " data increase and reduce "; The digital display circuit 106 of LED is made up of several LED lamps, its input end links to each other with the output terminal of CPU1, but the running status of display water heater as " RUN ", " fault ", " heating ", " regularly ", " defrost " etc., can be understood the state of water heater in real time by this circuit.

Master control borad 200 mainly comprises central control chip 201, sample circuit 202, communication interface circuit 203, output driving circuit 204 and relay group 205, three-terminal voltage-stabilizing circuit 206.After the output terminal of central authorities' control chip 201 was connected to output chip for driving 204, its output and then 205 pairs of performers of promotion relay group drove; Sample circuit converts digital quantity to through the A/D ALT-CH alternate channel after importing central control chip 201; Three-terminal voltage-stabilizing circuit 206 provides direct supply, uses as the power supply of The whole control device.Central authorities' control chip 201 is a central processor CPU 2, its FPDP links to each other with the FPDP of communication interface circuit 203, and by this interface circuit 203 and liquid crystal manual operator 100 realization data communications, the output of CPU2 is connected to chip for driving 204, and then 205 pairs of performers of promotion relay group drive; Sample circuit 202 comprises temperature sampling circuit and force samples circuit, each controlled point is monitored in real time, temperature sampling circuit is made up of some thermistors, the temperature sampling point comprises environment temperature CY1, coil temperature CY2, heat exchange temperature CY3, water tank temperature CY4 etc., detected temperature value input CPU2, convert digital quantity to through the A/D ALT-CH alternate channel, CPU2 provides 10 A/D ALT-CH alternate channels, can fully guarantee the control accuracy requirement of system, sample circuit also provides high pressure and low tension switch signal CY5, the collection of CY6, detecting under the unusual situation of system pressure the protection of can in time shutting down; Three-terminal voltage-stabilizing circuit 206 provides 12V direct supply, uses as the power supply of The whole control device; The output of CPU2 is connected to chip for driving 204, and then promotion relay group 205, and to comprising water pump 21, the fan 5a of air heat exchanger 5, four-way valve 2, compressor 1 performer such as grade drives, relay 1, relay 2, relay 3, relay 4 drives water pump 21 respectively, four-way valve 2, fan in the air heat exchanger 5 and compressor 1, make the Teat pump boiler can be according to the switch of the temperature controlled water pump 21 of water heat exchanger 3, according to the coil temperature in outdoor environment temperature and the air heat exchanger 5, carrying out defrost judges, 2 actions of control four-way valve, enter the defrost operational mode, or the break-make of the fan in the control air heat exchanger 5.

The beneficial effects of the utility model are: the hardware circuit of (1) system is simple and reliable; can realize intellectuality control to Teat pump boiler; control easy; can finish temperature, pressure acquisition in the Teat pump boiler; driving and control to devices such as compressor, fan, water pump etc., four-way valves; working stability is reliable, and defencive function is perfect.(2) adopt full Chinese fonts lcd module,,, increase maintainability, and improved the self-shield ability under the failure condition for the maintainer provides detailed failure logging for the user provides clear, easy operation interface.(3) adopt the RS485 communication modes between master control borad and the manual operator, antijamming capability is strong, and communication distance is long.(4) be provided with calendar clock chip, and the automatic retention time data of energy after the outage; Provide multistage regularly to start function, the operational mode at night can be set, reach obvious power savings.

Description of drawings

Now the utility model is described in further detail in conjunction with an embodiment and accompanying drawing thereof.

Fig. 1 is the structural representation of control device of the present utility model;

Fig. 2 is the structural representation of the Teat pump boiler of control of the present utility model.

Among the figure: 1 compressor, 2 four-way valves, 3 water heat exchangers, 4 throttle mechanisms, 5 air heat exchangers, 10 refrigerant circulation loops, 20 hot water circulation loop, 21 water pumps, 22 boilers, 100 liquid crystal display manual operators, 101 central control chips, 102 LCD MODULE, 103 communication interface circuit, 104 calendar clock chips, 105 button inputting circuits, the digital display circuit of 106 LED, 200 master control borads, 201 central control chips, 202 sample circuits, 203 communication interface circuit, 204 output driving circuits, 205 relay groups, 206 three terminal regulators.

Embodiment

The Intellectualized controller of Teat pump boiler of the present utility model is applied on the Teat pump boiler as Fig. 2.It is the compressor of cold-producing medium that this water heater adopts with R410A, in environment temperature is under 20 ℃ the operating mode, move after 2 hours, and 180 liters water tank hot water temperature has reached 55 and spent; Under-5 ℃ operating mode, move after 4 hours, 180 liters water tank hot water temperature has reached 50 degree.In the long-time continuous running test, the failure-free operation more than 1000 hours under bad working environments of this control device.

The Intellectualized controller structure of Teat pump boiler of the present utility model mainly comprises two parts as shown in Figure 1: and liquid crystal manual operator 100 and master control borad 200.Communication modes sampling RS485 mode between master control borad 200 and the liquid crystal manual operator 100, communication chip adopts MAX3085E.The RS485 communication modes has improved reliability of data transmission, has prolonged distance communication, and the longest communication distance reaches 1000 meters.

The PIC18F4525 of the little core of the central control chip 101 employings company of manual operator 100, its FPDP is connected with the FPDP of communication interface circuit 103.LCD MODULE adopts YEJHD1964A, shows various information with Chinese form, and for example: design temperature and water tank temperature show.Manual operator has 6 buttons: " ON/OFF " key, by the switch motion of this key assignments Teat pump boiler; " Reset " key arrives the initialization operation interface by the enough fast returns of this bond energy; " Index " key enters timing setting and status poll interface by this key; " Up, Down " key carries out the operation that data increase or reduce; " Set " key carries out the data validation operation; The user can set easily.Manual operator has the digital display lamp of 5 LED, indicates 5 different conditions of water heater respectively: " RUN ", " fault ", " heating ", " regularly ", " defrost ".Calendar clock chip 104 adopts PCF8663P, and chip PCF8663P has included the perpetual calendar algorithm, after CPU1 reads its data, can show year, month, day, hour, minute in real time; Calendar clock chip 104 is provided with the power supply holding circuit, has the power-failure memory function, and after electric control gear re-powered, control device can recover orthochronous.

CPU2 on the master control borad 200 adopts the PIC16F876 chip of little core company, this chip adopts the Flash flash memory technology, but overprogram, communication chip 203 adopts MAX3085E, chip for driving adopts MC1413P, and relay group 205 repeat circuits 1,2,3 can drive the following load of single-phase 220V/3A, are connected respectively to water pump 21, four-way valve 2 and fan, relay 4 can drive the following load of single-phase 220V/3kW, is connected to compressor.

Claims

1. the Intellectualized controller of a Teat pump boiler, described Teat pump boiler comprises the hot water circulation loop that a refrigerant circulation loop of being made up of compressor, four-way valve, water heat exchanger, throttle mechanism, air heat exchanger and is made up of water heat exchanger, water pump, boiler, it is characterized in that:

This control device comprises liquid crystal display manual operator and master control borad two parts, the exchange data using RS485 interface circuit between liquid crystal display manual operator and the master control borad; The FPDP of liquid crystal display manual operator is connected with the FPDP of its communication interface circuit, the FPDP of master control borad links to each other with the FPDP of its communication interface circuit, and be connected the data communication between realization liquid crystal display manual operator and the master control borad with interface circuit on the liquid crystal manual operator by this interface circuit;

Described liquid crystal manual operator comprises central control chip CPU1, LCD MODULE, the digital display circuit of communication interface circuit, calendar clock chip, button inputting circuits and LED; LCD MODULE links to each other with central control chip data terminal, and button inputting circuits, calendar clock chip link to each other with the input end of CPU1, and the digital display circuit of LED links to each other with the output terminal of CPU1;

Described master control borad comprises central control chip CPU2, sample circuit, communication interface circuit, output driving circuit and relay group, three-terminal voltage-stabilizing circuit; After the output terminal of CPU2 was connected to the output chip for driving, its output and then promotion relay group drove performer; Sample circuit input CPU2 converts digital quantity to through the A/D ALT-CH alternate channel; The three-terminal voltage-stabilizing circuit provides direct supply, uses as the power supply of The whole control device.

2. Intellectualized controller according to claim 1, it is characterized in that the central control chip in the described liquid crystal manual operator is a central processor CPU 1, its FPDP links to each other with the FPDP of communication interface circuit, and realizes data communication by interface circuit and master control borad; LCD MODULE adopts complete Chinese LCD; Calendar clock chip includes the perpetual calendar algorithm, provides time data to CPU1; Button inputting circuits is made up of the button that several can carry out input operation, and its output terminal links to each other with the input end of CPU1; But the digital display circuit of LED is made up of the LED lamp of the various running statuses of display water heater, and its input end links to each other with the output terminal of CPU1.

3. Intellectualized controller according to claim 1 and 2, it is characterized in that the central control chip in the described master control borad is a central processor CPU 2, its FPDP links to each other with the FPDP of communication interface circuit, and realizes data communication by this interface circuit and liquid crystal manual operator; The output of CPU2 is connected to chip for driving, and then promotion relay group drives performer; Sample circuit comprises temperature sampling circuit and force samples circuit, is provided with the sensor circuit that each controlled point is monitored in real time; The three-terminal voltage-stabilizing circuit provides the direct supply of The whole control device.

4. Intellectualized controller according to claim 2 is characterized in that the calendar clock chip in the described liquid crystal manual operator is provided with the power supply holding circuit with power-failure memory function.

5. Intellectualized controller according to claim 2 is characterized in that the button inputting circuits in the described liquid crystal manual operator comprises that input " switch ", " initialization ", " entering timing setting and status poll interface ", " data validation operation " reach the keyswitch of " data increase and reduce " instruction.

6. Intellectualized controller according to claim 2, but it is characterized in that the digital display circuit of LED in the described liquid crystal manual operator comprises the LED lamp of display water heater " RUN ", " fault ", " heating ", " regularly ", " defrost " state.

7. Intellectualized controller according to claim 3 is characterized in that the temperature sampling circuit on the described master control borad is made up of some thermistors, and the temperature sampling point comprises environment temperature point, coil temperature point, heat exchange temperature point, water tank temperature point.

8. the Intellectualized controller of stating according to claim 7 is characterized in that the detected temperature value input of the temperature sampling circuit CPU2 on the described master control borad, and 10 A/D ALT-CH alternate channels in CPU2 convert digital quantity to.

9. Intellectualized controller according to claim 3 is characterized in that the force samples circuit on the described master control borad comprises high-voltage switch gear signal acquisition point and low tension switch signal acquisition point.

10. Intellectualized controller according to claim 3 is characterized in that the relay group on the described master control borad comprises the relay that the fan in water pump, the air heat exchanger, four-way valve, compressor are driven.