CN201191758Y - Five-in-one digital general air conditioner protector - Google Patents

Abstract

The utility model relates to a five-in-one digital universal protector of an air-condition, which comprises a power supply circuit, a defrosting detection and control and over-current protection circuit which is composed of the temperature collecting and the over-current sampling, a phase sequence detection circuit, a communication circuit and a display debugging circuit which are respectively connected with a single chip microcomputer, wherein the phase sequence detection circuit comprises photocouplers IC4, IC5, IC6, three pins of a temperature sensor CN4 are respectively connected with three phases of the power supply, a diode D19, a resistor R37 and the IC4 optocoupler are connected in series, a diode D21, a resistor R38 and the IC5 optocoupler are connected in series, simultaneously, the photocouplers IC4, IC5, IC6 are further respectively connected with pull-up resistors R36, R35, R34, and then are connected with a single chip microcomputer IC1 in series through pull-up resistors R26, R27, R28. The protector can solve the defects of a three-in-one circuit board well and also can realize the intelligent, the digital and the universal functions of the protector through collecting, analyzing and re-controlling data, and simultaneously, the protector reduces the after-sale repair costs and improves the quality of products.

Description

The five in one digital general air conditioner protector

Technical field:

The utility model relates to air-conditioning autoprotection circuit engineering field, refers in particular to a kind of five in one digital general air conditioner protector.

Background technology:

In air conditioner industry, three or five above types usually work in high voltage because of press, in the big electric current environment, thus need press, even complete machine all will be realized necessary defencive function.At needing in the operation of air conditioner to power phase protection, press overcurrent protection and outdoor coil pipe used temperature detection, so the baffle of a kind of three-in-one plate with the pure hardware circuit design (can realize that phase sequence, overcurrent protection and outdoor temperature detect) just is applied in the air-conditioning, though this plate can be realized this three kinds of functions, but also come with some shortcomings, from the production aspect, because of crossing the inconsistency that current transformer is produced, when causing production testing to cross flow valuve, need the frequent adjustment divider resistance, production efficiency reduces greatly; From transportation after sale, be the 2.7W transformer because of what adopt, its weight and volume are bigger, usually cause the pcb board fracture, to after cost is increased; From development and Design, because of can not realizing self-diagnostic function, so in a single day some element of circuit breaks down, or can not realize protection, or misoperation occur, air-conditioning can not be worked normally; Secondly the communication between three-in-one plate and the indoor plate is to adopt cut-offfing of 2 group relaies to finish, and one the tunnel is the defrost signal, and relay is closed during not to defrost point, just disconnects when reaching defrost point; Another road relay is to judge the overcurrent phase sequence, and after in a single day these two groups of signals connect instead, it is undesired that air-conditioning also can be worked.

The utility model content:

The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of five in one digital general air conditioner protector is provided.

For achieving the above object; the technical scheme that the utility model provides is: five-in-one intelligent digital general air conditioner protector; it is characterized in that: the defrost of include the power circuit that links to each other with single-chip microcomputer respectively, being made up of temperature acquisition and overcurrent sample detects control and current foldback circuit, circuit of testing the phase sequence, telecommunication circuit, demonstration debug circuit, and the concrete connection of each circuit is as follows:

(1) power circuit: be made up of switch power module GR1B and pressurizer IC2, wherein, pressure-sensitive and fuse ZR, capacitor C 1, C2 and common-mode filter L1 are connected to form the alternating voltage protection, and diode D1, D2, D3, D4 and electrochemical capacitor E5 form rectifying and wave-filtering;

(2) defrost of being made up of temperature acquisition and overcurrent sample detects control and current foldback circuit: the temperature acquisition part A is made up of temperature sensor RTP, capacitor C 6, resistance R 6, R5, C5, temperature sensor RTP one termination 5V, other end connecting resistance R6, series resistor R5 is connected to single-chip microcomputer IC1 again; Overcurrent sample part B connects electrochemical capacitor E4, capacitor C 10 through rectifier diode D5, D6, D7, D8 again by current transformer CT1 parallel resistance R50, capacitor C 9, after receive IC1 behind bleeder circuit R14, the R15;

(3) circuit of testing the phase sequence: include photoelectrical coupler IC4, IC5, IC6, three pins of temperature sensor CN4 connect the three-phase of power supply respectively, diode D19, resistance R 37 and photoelectrical coupler IC4 serial connection, diode D21, resistance R 38 and photoelectrical coupler IC5 serial connection, diode D20, resistance R 39 and photoelectrical coupler IC6 serial connection, simultaneously, photoelectrical coupler IC4, IC5, IC6 also are connected with pull-up resistor R36, R35, R34 respectively, are concatenated into single-chip microcomputer IC1 through pull-up resistor R26, R27, R28 again;

(4) telecommunication circuit: include photoelectrical coupler IC6, IC7, be composed in series the whole wave circuit of half-wave by R31 and D10, through voltage stabilizing didoe ZD1 and electrochemical capacitor E6 voltage regulation filtering, for photoelectrical coupler IC7, IC6 provide power supply.Photoelectrical coupler IC6, IC7 link to each other with single-chip microcomputer IC1 respectively;

(5) show debug circuit: include LED 1, button SW1, SW2, SW3; LED 1 and single-chip microcomputer IC1 are composed in series data transmit circuit; the collector electrode of triode Q1, Q2, Q3 links to each other with LED 1; three positions of control LED 1 are opened and are closed; resistance R 1, R2, R3 connect the base stage of triode Q3, Q2, Q1 respectively; the other end is by connecting line plug CNE connection protector mainboard; CN1; IC1 links to each other with single-chip microcomputer, and button SW1, SW2, SW3 are connected in series D1, D2, D3 respectively.

After the utility model adopts technique scheme, (1) when open circuit or short circuit appearred in the coil pipe transducer, single-chip microcomputer can detect this road in real time fault, and did faulty indication (dodging for 1 second every 8 seconds) with LED, the realization of this function give to be produced and is brought great convenience after sale, fast.(2) setting and the deviation of crossing flow valuve no longer adjusted with divider resistance; aborning; set it with the digital debugging plate of supporting design usefulness and cross flow valuve and deviate, air-conditioning is worked in the mistake flow valuve scope of setting accurately, just can reliable protection in case reach the mistake flow valuve of setting.(3) when the phase sequence circuit in process of production, if any open circuit or short circuit, in the time of can both the utmost point when detecting, open-and-shutly know that this partial circuit has fault (the LED lantern festival was dodged 3 seconds in 8 seconds), guide maintenance the worker fix fast.(4) protector no longer adopts the break-make of relay to communicate by letter with indoor plate, but adopts " electric current loop " communication mode, is connected to indoor plate except that power line, and order wire has only one, can not have the wrong line, causes the possibility of air-conditioning misoperation.Realized intelligent control fully.(5) power unit also no longer adopts the transformer mode, but adopts stable performance, and is low in energy consumption, can realize the switch power module of short-circuit protection automatically.(6) all parameter settings all are to adopt numeral debugging plate to finish; include the setting that enters defrost point (default value is-6 ℃), withdraw from defrost point (+9 ℃), press is crossed flow valuve, cross the flow valuve calibration setup, the longest defrost operating time sets; the operation state values of all right online demonstration protector of this debugging plate, the current value when working, coil temperature value etc. as real-time detection press.Can also finish the factory setting value by pressing " rise " and " downward modulation " key simultaneously.(7) design of this kind of air conditioner protector can not only be satisfied the scope of application of our company's air-conditioning, and can also be applicable in the air-conditioning and employing compression mechanism cool equipment of homemade other brand Air-conditioning Enterprise.The versatility and the consistency of air-conditioning product have been satisfied greatly.

At some deficiency of three-in-one plate, we adopt advanced single-chip microcomputer to be the control core, by collection, analysis control again to data, not only can the three-in-one plate weak point of fine solution, but also realized its intellectuality, digitlization and generalization have also reduced the after-sales service cost simultaneously and have improved product quality.

Description of drawings:

Fig. 1 is power circuit principle figure;

Fig. 2 is temperature detection and over-current detection circuit schematic diagram;

Fig. 3 is a three-phase electricity circuit of testing the phase sequence schematic diagram;

Fig. 4 is the telecommunication circuit schematic diagram;

Fig. 5 is debugging display board circuit schematic diagram.

Embodiment:

Referring to Fig. 1-shown in Figure 5, protection control circuit of the present utility model is made up of a control board and debugging display panel.Just adjusting parameter because of the debugging display panel uses, so this plate could be used by the professional during parameter adjustment only when producing debugging and after sale, the hardware designs of air conditioner protector is by five most of compositions, (1) Switching Power Supply part (as shown in Figure 1): form by switch power module GR1B and pressurizer IC2, wherein, pressure-sensitive and fuse ZR, capacitor C 1, C2 and common-mode filter L1 are connected to form the alternating voltage protection and improve the EMC performance, and diode D1, D2, D3, D4 and electrochemical capacitor E5 form rectifying and wave-filtering; The 220V alternating current is become 310V left and right sides direct current, and GR1B provides power supply for switch power module, makes its 4 pin output 12V voltage, makes its output direct current 12V voltage through D12 and R52 again, provides power supply through IC2 7805 output 5V voltages for load simultaneously; (2) temperature sampling and overcurrent sampling section (as shown in Figure 2): the temperature acquisition part A is made up of temperature sensor RTP, capacitor C 6, resistance R 6, R5, C5, temperature sensor RTP one termination 5V, other end connecting resistance R6, series resistor R5 is connected to single-chip microcomputer IC1 again; Overcurrent sample part B connects electrochemical capacitor E4, capacitor C 10 through rectifier diode D5, D6, D7, D8 again by current transformer CT1 parallel resistance R50, capacitor C 9, after receive IC1 behind bleeder circuit R14, the R15; Temperature sensor RTP is connected in series to 4 pin of IC1 single-chip microcomputer again through pull down resistor R6 dividing potential drop by R5, single-chip microcomputer can collect the temperature of sensor surface accurately by the magnitude of voltage of AD mouth 4 pin.Current transformer CT1 can convert the magnitude of current in the power line to corresponding alternating voltage, after diode D5, D6, D7, D8 rectification and electric capacity E4 filtering, be divided to 6 pin of IC1 again through R14 and R15, single-chip microcomputer is by the variation of 6 pin voltages, can calculate corresponding current value, thereby the current value when knowing press work is controlled the protection work of complete machine with these data; (3) three-phase electricity phase sequence sampling section (as shown in Figure 3): include photoelectrical coupler IC4, IC5, IC6, three pins of socket CN4 connect the three-phase of power supply respectively, diode D19, resistance R 37 and photoelectrical coupler IC4 serial connection, diode D21, resistance R 38 and photoelectrical coupler IC5 serial connection, diode D20, resistance R 39 and photoelectrical coupler IC6 serial connection, simultaneously, photoelectrical coupler IC4, IC5, IC6 also are connected with pull-up resistor R36, R35, R34 respectively, are concatenated into single-chip microcomputer IC1 through pull-up resistor R26, R27, R28 again; 1 pin that A phase in the three-phase electricity and diode D19 resistance R 37 are connected in series to photoelectrical coupler IC4,2 pin connecting to neutral lines, 4 pin are connected to 23 pin of single-chip microcomputer by serial connection R26; B phase and diode D21 resistance R 38 are connected in series to 1 pin of photoelectrical coupler IC5, and 2 pin connecting to neutral lines, 4 pin are connected to 22 pin of single-chip microcomputer IC1 by serial connection R27; C phase and diode D20 resistance R 39 are connected in series to 1 pin of photoelectrical coupler IC6,2 pin connecting to neutral lines, whether 4 pin are connected to 21 pin of single-chip microcomputer IC1 by serial connection R28, phase sequence misphase, perhaps phase shortage that the time difference of the rising edge of single-chip microcomputer IC1 by detecting these three IO mouths is judged its three-phase electricity.Reach the purpose of protection complete machine; (4) communications part (as shown in Figure 4): include photoelectrical coupler IC6, IC7, be composed in series the whole wave circuit of half-wave by R31 and D10, through voltage stabilizing didoe ZD1 and electrochemical capacitor E6 voltage regulation filtering, for photoelectrical coupler IC7, IC6 provide power supply.Photoelectrical coupler IC6, IC7 link to each other with single-chip microcomputer IC1 respectively; This partial circuit is sent to indoor automatically controlled plate with the detected data of single-chip microcomputer IC1, makes it finish every controlled function.Live wire is by resistance R 31 and diode D10 rectification step-down, and 4 pin for photoelectrical coupler IC7 provide power supply after ZD1 and E6 voltage stabilizing again, and 2 pin are by the 32 pin series connection of R27 and single-chip microcomputer IC1.1 pin meets 5V, and 4 pin of IC6 meet 5V, and 3 pin link to each other with single-chip microcomputer 31 pin, and order wire is connected with indoor automatically controlled plate by single inserted sheet COMM butt joint; (5) debugging display board circuit part (as shown in Figure 5): include LED 1, button SW1, SW2, SW3; LED 1 and single-chip microcomputer IC1 are composed in series data transmit circuit; the collector electrode of triode Q1, Q2, Q3 links to each other with LED 1; three positions of control LED 1 are opened and are closed; resistance R 1, R2, R3 connect the base stage of triode Q3, Q2, Q1 respectively; the other end is by connecting line plug CNE connection protector mainboard; CN1; IC1 links to each other with single-chip microcomputer, and button SW1, SW2, SW3 are connected in series D1, D2, D3 respectively.This board parameter shows that three 8 sections charactrons of employing show that three com ports link to each other with the collector electrode of triode Q1, Q2, Q3 respectively, and emitter meets 5V, and base stage links to each other through 1,2,3 pin of the single-chip microcomputer IC1 of straight cutting connecting line and protector by resistance R 1, R2, R3.1,2 pin of chip IC 8 are the data pin; be connected to 8 pin of single-chip microcomputer IC1 by resistance R 13 and connecting line; 8 pin of chip IC 8 are the clock pin; be connected to 9 pin of protector single-chip microcomputer IC1 by resistance R 12 and connecting line, button SW1, SW2, SW3 link to each other by 26 pin of connecting line and single-chip microcomputer IC1.

Claims (1)

1, five in one digital general air conditioner protector; it is characterized in that: the defrost of include the power circuit that links to each other with single-chip microcomputer respectively, being made up of temperature acquisition and overcurrent sample detects control and current foldback circuit, circuit of testing the phase sequence, telecommunication circuit, demonstration debug circuit, and the concrete connection of each circuit is as follows:

(1) power circuit: by switch power module GR1B and pressurizer IC ₂Form, wherein, pressure-sensitive and fuse ZR, capacitor C 1, C2 and common-mode filter L1 are connected to form the alternating voltage protection, and diode D1, D2, D3, D4 and electrochemical capacitor E5 form rectifying and wave-filtering;

(2) defrost of being made up of temperature acquisition and overcurrent sample detects control and current foldback circuit: the temperature acquisition part A is made up of temperature sensor RTP, capacitor C 6, resistance R 6, R5, C5, temperature sensor RTP one termination 5V, other end connecting resistance R6, series resistor R5 is connected to single-chip microcomputer IC1 again; Overcurrent sample part B connects electrochemical capacitor E4, capacitor C 10 through rectifier diode D5, D6, D7, D8 again by current transformer CT1 parallel resistance R50, capacitor C 9, after receive IC1 behind bleeder circuit R14, the R15;

(3) circuit of testing the phase sequence: include photoelectrical coupler IC4, IC5, IC6, three pins of socket CN4 connect the three-phase of power supply respectively, diode D19, resistance R 37 and photoelectrical coupler IC4 serial connection, diode D21, resistance R 38 and photoelectrical coupler IC5 serial connection, diode D20, resistance R 39 and photoelectrical coupler IC6 serial connection, simultaneously, photoelectrical coupler IC4, IC5, IC6 also are connected with pull-up resistor R36, R35, R34 respectively, are concatenated into single-chip microcomputer IC1 through pull-up resistor R26, R27, R28 again;

(4) telecommunication circuit: include photoelectrical coupler IC6, IC7, be composed in series the whole wave circuit of half-wave by R31 and D10, through voltage stabilizing didoe ZD1 and electrochemical capacitor E6 voltage regulation filtering, for photoelectrical coupler IC7, IC6 provide power supply.Photoelectrical coupler IC6, IC7 link to each other with single-chip microcomputer IC1 respectively;

(5) show debug circuit: include LED 1, button SW1, SW2, SW3, LED 1 and single-chip microcomputer IC1 are composed in series data transmit circuit, the collector electrode of triode Q1, Q2, Q3 links to each other with LED 1, three positions of control LED 1 are opened and are closed, resistance R 1, R2, R3 connect the base stage of triode Q3, Q2, Q1 respectively, the other end meets the socket CN1 of single-chip microcomputer IC1 by connecting line plug CNE, and button SW1, SW2, SW3 are connected in series diode D1, D2, D3 respectively.

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