CN2099333U

CN2099333U - Small-sized high power constant temp. constant humidity socket

Info

Publication number: CN2099333U
Application number: CN 91213918
Authority: CN
Inventors: 刘家海
Original assignee: Individual
Current assignee: Individual
Priority date: 1991-06-19
Filing date: 1991-06-19
Publication date: 1992-03-18

Abstract

The utility model relates to a small-sized high power constant temperature and humidity socket which is an electronic contactless control switch, comprising a shell, a rectification voltage stabilizing circuit, a control switch circuit and a sample circuit. Circuit parts comprises a commutation diode, a capacitor, a voltage-stabilizing integrated block, a resistor, a potentiometer, a sensor, an indicated diode, a switch integrated circuit, a bidirectional thyristor and a power supply socket which is used for controlling electric devices. The utility model is used for places of requiring constant temperature and humidity of industrial and mining establishments, agriculture, sideline, etc., and has small size, low cost, no self power consumption and big connecting power.

Description

Small-sized high power constant temp. constant humidity socket

The utility model is a kind of electronic thermostatic constant humidity device, the contactless automatic control switch of particularly a kind of miniature electric.

The temperature and humidity control device is existing multiple at present, the electron temperature-control moisture control device, general cost is all than higher, as utilize the controllable silicon must be by supplying with behind the power transformer isolated buck for the workpiece voltage of switch member control circuit, but on-line operations such as some special ICs such as AA1016B, SL443A, CA3059, A3079 are arranged abroad under the 220V power supply, circuit subtracts list, peripheral element is few, but itself cost is than higher, requirement to peripheral element is also very tight, under the big situation of voltage ripple of power network, control accuracy is low.

The purpose of this utility model provide a kind of simple in structure, working stability is reliable, cost is low, can connect high-power temperature, humidity controller.

The utility model is formed, power supply wiring plug and the supply socket of Be Controlled consumer is arranged on the shell by shell, sample circuit, regulator rectifier circuit, gauge tap circuit, also have temperature, humidity regulation knob and sensor socket, it is characterized in that sample circuit finished by RT, regulator rectifier circuit comprises capacitor C ₁, commutation diode D ₁, D ₂, D ₃, D ₄Protection diode D ₅, filter capacitor C ₂, C ₃, integrated package of pressure-stabilizing IC ₁The gauge tap circuit comprises current-limiting resistance R ₁, R ₂, R ₃, R ₄, R ₅Variable potentiometer W switch ic chip ₂Light emitting diode BF ₁, BF ₂Bidirectional triode thyristor BG, their annexation following (with reference to Fig. 2) C ₁An end connect power supply a and be connected C with the N end of socket again ₁The other end connect bridge rectifier～end, another of bridge rectifier～end connects power supply O to be held, again and BF ₁, BF ₂Positive pole connect, connect the A of BG at last ₁End, the positive pole of bridge rectifier connects C ₂Positive pole again and D ₅Positive pole connect, connect IC again ₁Input end, IC ₁Output terminal connect D ₅Negative pole, connect C again ₃Positive pole, connect R at last ₁An end, R ₁The other end connect IC ₂5 pin and 1 pin, connect the end of RT again, the other end of RT connects IC ₂2 pin, connect R again ₂An end, R ₂The other end connect an end of the not pole-changing of W, the negative pole of bridge rectifier connects C ₂Negative pole and IC ₁Earth terminal, also connect C ₃But negative pole again with the center pole-changing of W and another not pole-changing be connected, connect IC at last ₂3 pin, IC ₂4 pin connect R ₃An end and R ₄An end, R ₄The other end connect BF ₁Negative pole, R ₃The other end connect the G utmost point of BG, the A of BG ₂The L end of end gang socket, again and R ₅An end connect R ₅The other end connect BF ₂Negative pole, in a of the utility model constant temperature and humidity socket, o termination 150V-250V AC power, connect sensor and place it in desired location, the constant temperature and humidity consumer is inserted the end with N, L, regulating W makes its indication in required temperature (wetting) degree scope, begin to heat or humidification, RT are the negative temperature coefficient sensor, the resistance of RT reduces with the raising of temperature, humidity, works as IC ₂2 pin current potentials raise with the reduction of RT and end 〉=1.6V switch integrated circuit IC ₂1 pin to the effect out of hand of 4 pin, 4 pin no-output electric currents, the A of bidirectional triode thyristor BG ₁, A ₂Between end, stop to heat or humidification, temperature, the humidity experienced as RT descend to some extent, the resistance of RT will improve thereupon descending, and work as IC ₂The raising that 2 pin current potentials are put with the RT resistance descends when ending ∠ 1.6V, IC ₂1 pin 4 pin are recovered control action again, 4 pin have electric current output, the A of bidirectional triode thyristor BG ₁A ₂Between connect, recover again to heat or humidification, just play the effect of constant temperature and humidity repeatedly with this.

Below in conjunction with embodiment and with reference to accompanying drawing the utility model is described in detail.

Fig. 1 (a) is single constant temperature of the utility model or constant humidity jack housing panel synoptic diagram.

Fig. 1 (b) is the utility model constant temperature, constant humidity double socket housing face-plate synoptic diagram.

Fig. 2 is the utility model circuit theory synoptic diagram.

(1) is the humiture adjusting knob shown in Fig. 1 (a), and (2) are constant temperature (wetting) pilot lamp, and (3) are sensor socket for (wetting) pilot lamp of heating, (4), and (5) are controlled consumer supply socket.

Shown in Fig. 1 (b), (1) is temperature adjustment knob, (2) be the humidity regulation knob, (3) be the constant temperature and humidity pilot lamp, (4) are the heating and moistening pilot lamp, and (5) are heating consumer socket, (6) be humidification consumer socket, (7) be temperature sensor, (8) are moisture sensor, the shared one group of regulator rectifier circuit of constant temperature and humidity circuit among the embodiment.

As shown in Figure 2, sample circuit is finished by RT, and regulator rectifier circuit comprises capacitor C ₁, commutation diode D ₁, D ₂, D ₃, D ₄Protection diode D ₅Filter capacitor C ₂, C ₃, integrated package of pressure-stabilizing IC ₁The gauge tap circuit comprises current-limiting resistance R ₁, R ₂, R ₃, R ₄, R ₅Variable potentiometer W, the switch ic chip ₁Light emitting diode BF ₁, BF ₂Bidirectional triode thyristor BG, a, o are power-line plug, and fiery zero line connects does not arbitrarily have influence to circuit working, and just induction voltage ratio is higher in the circuit, live wire connects a zero line and meets o among the embodiment, and in a line string one fuse, size of current is with reference to the consumer working current, L, N are controlled consumer supply socket, electric current 〉=10A Be ground wire.The concrete connected mode of circuit and the course of work as previously mentioned, among the embodiment, C ₁Select 0.47 μ F/400V capacitor for use, as press Fig. 1 (b) and implement C ₁Should add greatly about 1 μ F commutation diode D ₁, D ₂, D ₃, D ₄Select 1N4002 protection diode D for use ₅, select 1N4001, C for use ₂, C ₃, select 100 μ F/25V electrolytic capacitor filter devices for use, integrated package of pressure-stabilizing IC ₁Select AN7809 for use, should improve current-limiting resistance R as implementing the voltage stabilizing value by Fig. 1 (b) ₁Select 150 Ω miniwatt resistance for use, R ₂Should decide R according to the highest qualification temperature (wetting) degree ₃Select 60 Ω 1/2W resistance for use, R ₄Select 250 Ω 1/2W resistance for use, R ₅Select 60K Ω 1/2W resistance for use, W selects the 3.3K variohm for use, should decide IC according to institute's temperature control humidity range among the embodiment ₂Select that other amplifier, switch integrated package such as TWH8778 etc. also can use BF among the switch integrated circuit TWH8751 embodiment for use ₁, BF ₂Be light emitting diode, select for use two kinds of colors, BG to select bidirectional triode thyristor voltage 400V electric current 〉=10A for use, answer finned in the enforcement, RT is the quick resistance of negative temperature coefficient heat (wetting), and resistance is selected 5.1K for use, encapsulates with epoxy resin and insulation tube in the enforcement.

The utlity model has the following characteristics:

1, volume is little, and it is big to connect power, and cost is low.

2, operating voltage range is wide, the control accuracy height.

3, energy-conservation, consumer long service life.

Claims

1, small-sized high-power constant temperature and humidity socket, form by shell, sample circuit, regulator rectifier circuit, gauge tap circuit, power-line plug and Be Controlled consumer socket are arranged on the shell, it is characterized in that: sample circuit is made up of RT, be temperature-sensitive or wet quick sensing resistor spare, regulator rectifier circuit comprises: capacitor C ₁Commutation diode D ₁, D ₂, D ₃, D ₄, protection diode D ₅, filter capacitor C ₂, C ₃, integrated package of pressure-stabilizing IC ₁, the gauge tap circuit comprises current-limiting resistance R ₁, R ₂, R ₃, R ₄, R ₅, variable potentiometer W, switch ic chip ₂, light emitting diode BF ₁, BF ₂, bidirectional triode thyristor BG, C ₁An end connect power supply a and be connected C with socket N end again ₁The other end connect bridge rectifier～end, another of bridge rectifier～end connects power supply O to be held, again and BF ₁, BF ₂Positive pole connect, connect the A of bidirectional triode thyristor BG at last ₁End, the positive pole of bridge rectifier connects C ₂Positive pole again and D ₅Positive pole connect, connect IC again ₁Input end, IC ₁Output terminal connect D ₅Negative pole connect C again ₃Positive pole, connect R at last ₁An end, R ₁The other end connect IC ₂5 pin and 1 pin, connect the end of RT again, the other end of RT connects IC ₂2 pin connect R again ₂An end, R ₂The other end connect an end of the not pole-changing of W, the negative pole of bridge rectifier connects C ₂Negative pole and IC ₁Earth terminal, also connect C ₃But negative pole again with the center pole-changing of W and another not pole-changing be connected, connect IC at last ₂3 pin, IC ₂4 pin connect R ₃An end and R ₄An end, R ₄The other end connect BF ₁Negative pole, R ₃The other end connect the G utmost point of BG, the A of BG ₂The L end of end gang socket, again and R ₅An end connect R ₅The other end connect BF ₂Negative pole, the heat radiation utmost point of BG is adorned a small heat-dissipating sheet, is connected with heat radiator on the bonnet again, the middle mica-sheet insulation, potentiometer W light emitting diode BF used ₁, BF ₂All be contained on the housing face-plate, sensor BT connect 1 meter left and right sides electric wire utilize plug insert with panel on sensor socket in.

2, according to claims 1 described small-sized high-power constant temperature and humidity socket, it is characterized in that: the direct shared AC power of rectification circuit and controllable silicon, circuit does not have power consumption, can connect big controlled current silicon.