CN2222875Y

CN2222875Y - Full-automatic fan coil controller

Info

Publication number: CN2222875Y
Application number: CN 95236558
Authority: CN
Inventors: 彭建华
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-04-08
Filing date: 1995-04-08
Publication date: 1996-03-20
Anticipated expiration: 2005-04-08

Abstract

The utility model relates to a full-automatic fan coil controller. The output ends of a transducing sampling circuit and a standard voltage circuit are simultaneously and respectively connected with two input ends of an overlap hysteresis comparison circuit. The input ends and the output ends of the overlap hysteresis comparison circuit, a decoding selective circuit, an amplifying circuit and a fan controller are orderly connected. The output end of the amplifying circuit is connected with a status display circuit. A commutation filtering circuit is connected with the power supply which supplies the direct current working for each circuit. The utility model has the advantages of high control precision, convenient operation, reliable automation and good performance.

Description

Full-automatic fan coil controller

The utility model relates to the control device of central air-conditioning terminal device, particularly a kind of controller of central air-conditioning fan coil.

Along with the extensive use of central air conditioner system, the fan coil of its terminal device is also more and more, but the control device of fan coil mostly is a kind of mechanical type third gear switch, key switch for example, the old-fashioned switch of this class is used for fan coil control, and hand shift uses inconvenience, damage easily, indoor temperature can't be selected control automatically, also can not adapt to the cooling and heating load of continuous variation automatically, makes temperature fluctuation big, the adjustment weak effect, the fan coil function is very limited.

The purpose of the utility model aims to provide a kind of full-automatic fan coil controller, and it can carry out intellectual automatic control to fan coil according to room temperature, and temperature is adjustable, the control accuracy height, and temperature fluctuation is little, and is easy to use, dependable performance.

The technical solution of art utility model is: this full-automatic fan coil controller is by the sense samples circuit, the normal voltage circuit, overlapping stagnant chain rate is than circuit, the decoding gating circuit, amplifying circuit, controller of fan, status display circuit and current rectifying and wave filtering circuit constitute, the output of sense samples circuit and normal voltage circuit is connected to two inputs of overlapping stagnant chain rate than circuit simultaneously respectively, overlapping stagnant chain rate is than circuit, the decoding gating circuit, amplifying circuit, controller of fan connects successively, the output of previous circuit is connected to the input of a back circuit, the output of amplifying circuit also is connected to status display circuit, and the output of current rectifying and wave filtering circuit connects and supply with the dc supply of each circuit.

The utility model is compared with prior art, old-fashioned mechanical switch hand shift, temperature control, shortcoming that fluctuation is big have been overcome, can carry out intellectual automatic control to fan coil according to room temperature, have easy to use, temperature is adjustable, control accuracy is high, temperature fluctuation is little, energy saving, dependable performance, outstanding advantage such as aesthetic in appearance.

Fig. 1 is the utility model structured flowchart.

Fig. 2 is the utility model circuit diagram.

Fig. 3 is the utility model profile plan view.

The utility model is described in further detail below in conjunction with accompanying drawing,

Sense samples circuit 1 is connected to two inputs of overlapping stagnant chain rate than circuit 3 respectively with the output of normal voltage circuit 2 among Fig. 1, overlapping stagnant chain rate is connected to the input of decoding gating circuit 4 than the output of circuit 3, the output of decoding gating circuit 4 is connected to the input of amplifying circuit 5, the output of amplifying circuit 5 is connected to status display circuit 7 and controller of fan 6 respectively, and the output of current rectifying and wave filtering circuit 8 connects and supply with the dc supply of each circuit (1,2,3,4,5,7).

Described overlapping stagnant chain rate is promptly stagnated to encircle by several hysteresis comparators of the same type than circuit 3 and is formed in parallel, voltage signal end of the common connection of an input of the same name of these rings that stagnate is imported, and the dense order connection of another input of these rings that stagnate input is imported by little extremely big or descending different voltages, and the stagnant ring of the upper level lower threshold voltage of adjacent two rings that stagnate is lower than the Upper threshold voltage of the stagnant ring of next stage.

Overlapping stagnant chain rate is than circuit 3 and decoding gating circuit 4 and the stagnant ring of annexation formation ladder compare selection circuit thereof.

In circuit shown in Figure 2, the sense samples circuit includes thermistor Rf, resistance R 6, two ends were connected between rectification filter circuit output end and the ground after potentiometer W connected successively, thermistor Rf, the tie point of resistance R 6 is as the output of sense samples circuit, be connected to overlapping stagnant chain rate than circuit Y1, Y2, Y3, input "-" end of Y4, the normal voltage circuit is then by resistance R 7, R8, R9, R10, two ends, R11 series connection back also are connected between the output and ground of current rectifying and wave filtering circuit, the tie point of wherein per two resistance is respectively as output, respectively by resistance R 12, R13, R14, R15 is connected to several comparator inputs "+" end of chain rate than circuit that stagnate, overlapping stagnant chain rate includes a plurality of comparator (Y1 than circuit, Y2, Y3, Y4, model 324), be in series with resistance R 16 or R17 between the output of each comparator and input "+" end, R18, R19, and be serially connected with resistance R 12 between each comparator input "+" end and the normal voltage circuit output end, R13, R14, R15, comparator (Y1, Y2, Y3, Y4) output is connected to the input of decoding gating circuit, the decoding gating circuit includes phase inverter (F1, F2, F3, F4, model 4069), nor gate (HF1, HF2, HF3, HF4, HF5, model 4007), diode (D6, D7, D8, D9, D10), their output, input connects successively, the output of F1 connects HF2 simultaneously, HF3, HF4, the input of HF5, the output of F2 connects HF3 simultaneously, HF4, the input of HF5, the output of F3 connects HF4 simultaneously, the input of HF5, the output of F4 then connects the input of HF5, in the time of with above-mentioned the connection, overlapping stagnant chain rate is than the comparator (Y1 of circuit, Y2, Y3, Y4) output also is connected directly to nor gate (HF1, HF2, HF3, HF4), diode D10, the D6 output links together, D9, D7 connects together, the output that also has D8, constituting the input that three outputs are connected to amplifying circuit respectively is T1, T2, the base input end of Y3, amplifying circuit mainly comprises triode T1, T2, T3 and relay line bag J1, J2, J3, relay line bag J1, J2, J3 is serially connected in triode T1 respectively, T2, in the emitter circuit of J3, triode T1, T2, the base stage of T3 is diode D6 with decoding gating circuit output respectively, D7, D8, D9, the D10 output connects, triode T1, T2, the equal ground connection of T3 colelctor electrode, each triode T1, T2, the emitter stage of T3 connects and divides two-way, one road string people relay line bag J1, J2, be connected to rectification filter circuit output end behind the J3, another road is respectively by diode D14, D15, D16, resistance R 23, R24, be connected to light emitting diode (D19 behind the R25 respectively, D20, D21) negative terminal, light emitting diode (D19, D20, D21) its anode links to each other with the output of current rectifying and wave filtering circuit and constitutes status display circuit, relay contact J1-1,11-2, J1-3 goes here and there respectively in the three fast electric power loops of people's blower fan motor.

Operation principle,

Current rectifying and wave filtering circuit of the present utility model provides the DC voltage of 12V and 6.8V to supply each circuit as working power, the thermistor Rf of sense samples circuit is a temperature sensor, indoor temperature is become the signal of telecommunication, potentiometer W makes thermoregulator, fixed value resistance R6 makes linearization process to sampled signal, make the signal voltage of output and the temperature of sensor impression be linear approximate relationship, the normal voltage circuit is connected by resistance R 7～R11, for an input of comparator provides normal voltage, the chain rate that stagnates is changeed low than the output potential of its comparator of circuit by height or is changeed when high by low, corresponding different voltage comparator circuits, feedback signal and normal voltage are compared, and compile out digitized result, comparator Y1 and resistance R 15, R19 constitutes the ring that stagnates, Y2, Y3, Y4 and resistance R 12～15, R16～19 constitute three rings that stagnate in addition respectively, can get 4 rings that stagnate altogether, because R10 and R8 resistance are less, the stagnant ring part that Y1 and Y2 form is overlapping, the second order ladder is stagnant to be encircled and constitute, the stagnant ring that Y3 and Y4 form constitutes the stagnant ring of another second order ladder, the design of this device is not common closed-loop control, the basic structure of ring but the above ladder of utilization second order or second order stagnates as adjustment control, go to regulate the air quantity or the water yield of fan coil, reach the purpose of regulating the refrigerated medium heat, can select n+1 kind air quantity or the water yield and corresponding refrigerating capacity or heating capacity by the stagnant ring of n rank ladder, room temperature is maintained in the scope of setting.

Claims

1, a kind of full-automatic fan coil controller, it is characterized in that by sense samples circuit (1), normal voltage circuit (2), overlapping stagnant chain rate is than circuit (3), decoding gating circuit (4), amplifying circuit (5), controller of fan (6), status display circuit (7) and current rectifying and wave filtering circuit (8) constitute, the output of sense samples circuit (1) and normal voltage circuit (2) is connected to two inputs of overlapping stagnant chain rate than circuit (3) simultaneously respectively, overlapping stagnant chain rate is than circuit (3), decoding gating circuit (4), amplifying circuit (5), controller of fan (6) connects successively, the output of previous circuit is connected to the input of a back circuit, the output of amplifying circuit (5) also is connected to status display circuit (7), and the output connection of current rectifying and wave filtering circuit (8) is also supplied with each circuit (1,2,3,4,5,7) dc supply.

2, full-automatic fan coil controller according to claim 1, it is characterized in that overlapping stagnant chain rate is formed in parallel by the promptly stagnant ring of several hysteresis comparators of the same type than circuit (3), voltage signal end of the common connection of an input of the same name of these rings that stagnate is imported, and another inputs of these rings that stagnate successively preface connect input and import to big or descending different voltages by little, and the upper levels of adjacent two rings that the stagnate ring lower threshold voltages that stagnate are lower than the stagnant Upper threshold voltage that encircles of next stage.

3, full-automatic fan coil controller according to claim 1 is characterized in that overlapping stagnant chain rate connects and composes the stagnant ring of ladder compare selection circuit than circuit (3) and decoding gating circuit (4).

4, full-automatic fan coil controller according to claim 1, it is characterized in that sense samples circuit (1) include thermistor (Rf), resistance (R6), potentiometer (1) connect successively the back two ends be connected between rectification filter circuit output end and the ground, the tie point of thermistor (Rf), resistance (R6) is connected to comparison circuit Y1, Y2, Y3, Y4 as the output of sense samples circuit (1)) input "-" end.

5, full-automatic fan coil controller according to claim 1, it is characterized in that normal voltage circuit (2) is connected between the output and ground of current rectifying and wave filtering circuit (8) by two ends, resistance (R7, R8, R9, R10, R11) series connection back, the tie point of wherein per two resistance is respectively as output, and is connected to input "+" end of overlapping stagnant chain rate than the comparator (Y1, Y2, Y3, Y4) of circuit (3) by resistance R 12, R13, R14, R15 respectively.

6, full-automatic fan coil controller according to claim 1, it is characterized in that overlapping stagnant chain rate includes a plurality of comparators (Y1, Y2, Y3, Y4 than circuit (3),), be in series with resistance (R16, R17, R18, R19) between the defeated and input of the output of each comparator, and be serially connected with resistance (R12, R13, R14, R15) between each comparator input "+" end and normal voltage circuit (2) output.

7, full-automatic fan coil controller according to claim 1, it is characterized in that deciphering gating circuit (4) and include phase inverter (F1, F2, F3, F4), nor gate (HF1, HF2, HF3, HR4, HF5), diode (D6, D7, D8, D9, D10), their output, input connect successively.