CN103338030A

CN103338030A - Device for mounting timing shutdown circuit on maintenance switch of air conditioner

Info

Publication number: CN103338030A
Application number: CN2013103005163A
Authority: CN
Inventors: 周芸
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-07-17
Filing date: 2013-07-17
Publication date: 2013-10-02

Abstract

The invention discloses a device for mounting a timing shutdown circuit on a maintenance switch of an air conditioner. The device is characterized by comprising a 12 V direct-current power supply, a timing capacitor quick charging and slow discharging circuit, a monostable timing circuit, a direct-current replay controlled air conditioner maintenance switch circuit and an air conditioner operation indicator light, wherein the time-base circuit in the monostable timing circuit adopts the NE555 model. Cabinet type air conditioners on the market have no timing shutdown functions, resulting in certain troubles to users, and in order to realize the purposes of health, power saving and air conditioner abrasion reduction, the timing shutdown circuit is mounted. In order to solve the technical problem that current situation that the time-base circuit cannot be used for timing for a long time is not broken through always, and on the basis of not changing the condition that a typical timing circuit is manufactured on the time-base circuit, only two common components are added in the typical monostable timing circuit, namely, the purpose of long-time timing of the time-base circuit is realized.

Description

Install timing shutdown device additional with the air-conditioning service switch

Technical field

The invention belongs to the Time Control Technique field, is to install timing shutdown device about a kind of additional with the air-conditioning service switch.

Background technology

Have many cabinet air-conditioners not have the timing shutdown function on the market, this brings certain trouble to the user, as: when noon or the night rest, need air-conditioning to work on and can close automatically after a period of time.Its purpose has three: one, for health prevents flu; The 2nd, for conservation of power; The 3rd, reduce the unnecessary mechanical wear of air-conditioning.In order to reach this purpose, can utilize the service switch on the air-conditioning, can realize by installing timing shutdown circuit additional.Timing shutdown circuit can select for use time-base circuit as core parts, and still, time-base circuit is made the manufacturing technology that regularly surpasses 30 minutes suitable difficulty.

All the time fail to break through time-base circuit overlength technical barrier regularly in order to solve, on the basis that does not change time spent base circuit production typical case timing circuit, of the present inventionly install timing shutdown device additional with the air-conditioning service switch and only in typical timing circuit, increase by 2 common components and parts, can realize with time-base circuit overlength purpose regularly.

Below detailed description is of the present invention installs the correlation technique content that timing shutdown device relates to additional with the air-conditioning service switch in implementation process.

Summary of the invention

Goal of the invention and beneficial effect: have many cabinet air-conditioners not have the timing shutdown function on the market, this brings certain trouble to the user, in order to realize health, conservation of power and minimizing air-conditioning machinery wearing and tearing purpose, can utilize the service switch on the air-conditioning, can realize by installing timing shutdown circuit additional.

All the time fail to break through time-base circuit overlength technical barrier regularly in order to solve, on the basis that does not change time spent base circuit production typical case timing circuit, of the present inventionly install timing shutdown device additional with the air-conditioning service switch and only in typical timing circuit, increase by 2 common components and parts, can namely realize with time-base circuit overlength purpose regularly.

The circuit working principle: the core circuit that installs timing shutdown device with the air-conditioning service switch additional is a monostable circuit, click key switch AN, the 12V DC power supply adds to the two ends of timing capacitor C1, timing capacitor C1 is charged to 12V rapidly, at this moment the base stage of NPN transistor VT1 obtains bias voltage, make NPN transistor VT1 conducting, and then make the 2nd pin of time-base circuit IC1 and the 6th pin export high level, the 3rd pin output low level of time-base circuit IC1 then, the coil of direct current relay J gets electric work, at this moment its normally opened contact J-1 adhesive starts working air-conditioning with air-conditioning service switch SW and the direct current relay J normally opened contact J-1 closure that connects.

Along with the voltage on the timing capacitor C1 descends lentamente, the 2nd pin of time-base circuit IC1 and the voltage of the 6th pin will descend gradually, when the high level voltage of the 2nd pin of basic IC circuit 1 and the 6th pin drops to 2/3 DC power supply voltage at that time, the low level upset of the 3rd pin output of time-base circuit IC1 is high level, at this moment the coil of direct current relay J is not worked dead electricity, then direct current relay J normally opened contact J-1 discharges, and at this moment the air-conditioning of being controlled by normally opened contact J-1 quits work.The resistance of adjusting linear potentiometer RP can change the air-conditioning timing working time.Attention: when use was of the present invention, air-conditioning service switch SW must place closed condition.

Technical characterictic: install timing shutdown device additional with the air-conditioning service switch, it comprises 12V DC power supply, timing capacitor quick charge and slow discharge circuit, mono-stable timing circuit, direct current relay control air-conditioning service switch circuit, operation of air conditioner indicator light, it is characterized in that:

Timing capacitor quick charge and slow discharge circuit: it is made up of key switch AN, timing capacitor C1, NPN transistor VT1 and linear potentiometer RP, the base stage of NPN transistor VT1 connects the end of key switch AN and the positive pole of timing capacitor C1, the negative pole connection circuit ground GND of timing capacitor C1, the anodal VCC of the collector electrode connection circuit of the other end of key switch AN and NPN transistor VT1, an end and the mono-stable timing circuit of the emitter wiring potentiometer RP of NPN transistor VT1, the other end of linear potentiometer RP and movable end connection circuit ground GND thereof;

Mono-stable timing circuit: the model that time-base circuit IC1 adopts is NE555, the anodal VCC of the 4th pin of time-base circuit IC1 and the 8th pin connection circuit, the 2nd pin of time-base circuit IC1 and the 6th pin connect the emitter of NPN transistor VT1, the 1st pin connection circuit ground GND of time-base circuit IC1, the 3rd pin of time-base circuit IC1 connects direct current relay control air-conditioning service switch circuit, and the normally opened contact J-1 of direct current relay J connects the two ends of air-conditioning service switch SW;

Direct current relay control air-conditioning service switch circuit: the 3rd pin of time-base circuit IC1 meets an end of direct current relay J coil and the positive pole of protection diode D1, the anodal VCC of negative pole connection circuit of the other end of direct current relay J coil and protection diode D1;

The anodal VCC of 12V dc power anode connection circuit, 12V dc power cathode connection circuit ground GND.

The operation of air conditioner indicator light: it is made up of resistance R 1 and LED, and the 3rd pin of time-base circuit IC1 passes through the negative pole of resistance R 1 sending and receiving optical diode LED, the anodal VCC of the anodal connection circuit of LED.

Description of drawings

Accompanying drawing 1 is the circuit working schematic diagram that installs timing shutdown device with the air-conditioning service switch additional; J-1 in the accompanying drawing 1 is the normally opened contact of direct current relay J.

Embodiment

According to installing timing shutdown device circuit working schematic diagram and description of drawings additional with the air-conditioning service switch shown in the accompanying drawing 1, and according to annexation between the components and parts in the described each several part circuit of summary of the invention, and the components and parts technical parameter described in the execution mode requires and the circuit production main points are implemented to realize the present invention, below in conjunction with embodiment correlation technique of the present invention is further described.

The selection of components and parts and technical parameter

IC1 is time-base circuit, and the model of selecting for use is: NE555; Time-base circuit IC1 is 8 pin DIP encapsulation, and each pin function: 1 pin is circuit ground; 2 pin are trigger end; 3 pin are output; 4 pin are reset terminal; 5 pin are control voltage; 6 pin are thresholding (threshold value); 7 pin are discharge end; 8 pin are positive source;

Key switch AN can select the K-18 type for use;

Timing capacitor C1 is electrochemical capacitor, and capacity is 1000 μ F/25V, requires timing capacitor C1 self leakage current the smaller the better;

VT1 is NPN transistor, and the model of selecting for use is 2SC9013, requires β value 〉=220;

RP is linear potentiometer, and its resistance is 51K Ω;

The resistance of resistance R 1 is 1K Ω;

LED is red light emitting diodes;

The model that direct current relay J selects for use is JQX-13F-12V; Direct current relay J has 5 pin, that is: 2 pin of the coil of direct current relay J, and power output has 3 pin, and 3 pin are formed normally opened contact and normally-closed contact respectively, and J-1 is the normally opened contact of direct current relay J in the accompanying drawing 1.

Circuit production main points and circuit debugging

Because of the circuit structure that installs timing shutdown device with the air-conditioning service switch additional fairly simple, as long as the electronic devices and components performance of selecting for use generally speaking is intact, and the components and parts annexation in the accompanying drawing 1 is welded to specifications, after physical connection line and welding quality were correct through scrutiny, circuit of the present invention did not need to debug to get final product operate as normal substantially;

Timing determines that by the value of timing capacitor C1, linear potentiometer RP according to the time needs of air-conditioning timing shutdown, the capacity of timing capacitor C1 can be selected in the circuit in 1000～2200 μ F scopes;

Selecting the capacity of timing capacitor C1 is 1000 μ F/25V, and when the resistance of linear potentiometer RP was 2.3K Ω, this device regularly was about 10 minutes; When the resistance of linear potentiometer RP was 22K Ω, this device regularly was about 100 minutes; When the resistance of linear potentiometer RP was 51K Ω, this device regularly was about 200 minutes;

Attention: when use was of the present invention, air-conditioning service switch SW must place closed condition; All components and parts that install timing shutdown device additional with the air-conditioning service switch can all be packed in the magazine of electrician with 86 profile plates.

Claims

1. one kind installs timing shutdown device additional with the air-conditioning service switch, it comprises 12V DC power supply, timing capacitor quick charge and slow discharge circuit, mono-stable timing circuit, direct current relay control air-conditioning service switch circuit, operation of air conditioner indicator light, it is characterized in that:

Described timing capacitor quick charge and slow discharge circuit are made up of key switch AN, timing capacitor C1, NPN transistor VT1 and linear potentiometer RP, the base stage of NPN transistor VT1 connects the end of key switch AN and the positive pole of timing capacitor C1, the negative pole connection circuit ground GND of timing capacitor C1, the anodal VCC of the collector electrode connection circuit of the other end of key switch AN and NPN transistor VT1, an end and the mono-stable timing circuit of the emitter wiring potentiometer RP of NPN transistor VT1, the other end of linear potentiometer RP and movable end connection circuit ground GND thereof;

The model that time-base circuit IC1 in the described mono-stable timing circuit adopts is NE555, the anodal VCC of the 4th pin of time-base circuit IC1 and the 8th pin connection circuit, the 2nd pin of time-base circuit IC1 and the 6th pin connect the emitter of NPN transistor VT1, the 1st pin connection circuit ground GND of time-base circuit IC1, the 3rd pin of time-base circuit IC1 connects direct current relay control air-conditioning service switch circuit, and the normally opened contact J-1 of direct current relay J connects the two ends of air-conditioning service switch SW;

The 3rd pin of time-base circuit IC1 meets an end of direct current relay J coil and the positive pole of protection diode D1, the anodal VCC of negative pole connection circuit of the other end of direct current relay J coil and protection diode D1 in the described direct current relay control air-conditioning service switch circuit;

The anodal VCC of described 12V dc power anode connection circuit, 12V dc power cathode connection circuit ground GND.

2. according to claim 1ly install timing shutdown device additional with the air-conditioning service switch, it is characterized in that: the operation of air conditioner indicator light is made up of resistance R 1 and LED, the 3rd pin of time-base circuit IC1 passes through the negative pole of resistance R 1 sending and receiving optical diode LED, the anodal VCC of the anodal connection circuit of LED.