CN2802562Y - Energy-saving temp controller - Google Patents

Abstract

The utility model provides an energy-saving temperature controller with a time-delay guard function, which comprises a commutation filtering circuit, a time-delay output control circuit, a temperature control circuit, an operating state display circuit, and a relay, wherein the Commutation filtering circuit provides a direct-current power supply of 12 voltages, and the time-delay output control circuit comprises a 555 type integrated package IC; an output end of the IC is connected with a temperature control switch of the temperature control circuit, and the relay J is connected between the direct-current power supply and a collecting electrode of a triode BG1 in the temperature control circuit. The utility model can conveniently carry out manual regulations and selections, and can accurately control the internal temperature of electric appliances; the operating state of the electric appliances can be directly known, which prevents compressors from frequently starting and from not stopping for a long time, the service life of the compressors can be improved and the utility model has the advantage of energy saving.

Description

Energy-conservation temperature controller

Technical field the utility model relates to a kind of temperature controller, particularly a kind of energy-conservation temperature controller that is applicable to refrigerator and refrigerator-freezer.

The temperature controller that background technology current refrigerator, refrigerator-freezer use, great majority adopt the hot swollen shrinkage characteristics of heat transfer mediums, and promote hinged pendulum and do clutch with sheet metal, thus the unlatching of control compressor.There is following defective in this temperature controller: 1, no Automatic Time Lag Function, under the environment of power supply instability, electrical equipment is by unexpected power failure, incoming call and damage compressor.2, temperature control sensitivity is low, can occur not shutting down when environment temperature is higher or phenomenon that stop time is short, has so not only wasted energy but also quickens the wearing and tearing of compressor, the phenomenon of not freezing can occur when environment temperature is hanged down.3, adjusting knob duty cue mark is not obvious, can not set the temperature that oneself needs very intuitively.

The summary of the invention the purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art, and a kind of novel energy-conserving temperature controller that can intuitively set temperature required value with delay protection function is provided.

For realizing the purpose of this utility model, the technical solution of the utility model is: it is made up of current rectifying and wave filtering circuit, time-delay output control circuit, temperature-control circuit, duty display circuit and relay J, and current rectifying and wave filtering circuit is by dropping resistor R ₀, bridge rectifier (D ₀-D ₃), filter capacitor C ₀Form, output 12V direct supply uses for time-delay output control circuit, temperature-control circuit, duty display circuit and relay J; The time-delay output control circuit is by 555 type ic chips, resistance R ₁, R ₂And capacitor C ₁, C ₂And quick start switch K forms resistance R ₁, R ₂And capacitor C ₁Be connected in series between 12V direct supply and the system earth resistance R ₁Quick start switch K in parallel, capacitor C ₁And resistance R ₂Between contact and 555 type ic chip input ends join, be connected to a high frequency capacitance C between ic chip and the system ₂Temperature-control circuit is by 2-10 temperature detect switch (TDS), resistance R in parallel ₃, triode BG ₁Form, and be series between the output terminal and system earth of ic chip triode BG ₁Grounded emitter, relay J are connected to 12V power supply and triode BG ₁Between the collector, hand switch of each temperature detect switch (TDS) series connection, other hand switch all disconnects when a hand switch is closed, relay J diode D in parallel ₆The duty display circuit is organized R by electricity ₄, R ₅With light emitting diode D ₄, D ₅Form R ₄, D ₄, D ₅, R ₅Be connected in series between 12V direct supply and the system earth D ₄, D ₅Between contact and relay J, triode BG ₁Between contact be connected; Light emitting diode D ₄, D ₅Be installed on the appliance panel with quick start switch K and hand switch, hand switch is made the pressure type button, display setting temperature digital value on the hand switch pressure type button, and quick start switch is made the back springing type button.

Temperature detect switch (TDS) of the present utility model can adopt following structure: constitute shell by a close glass tube of envelope, glass tube inner chamber two ends are equipped with a conductor and mercury respectively, lead is connected a lead separately and prolongs with mercury and is raised to outside the pipe, conductor and mercury contact when being equal to or higher than set temperature value, do not contact when being lower than set temperature value.

Advantage of the present utility model is: 1, can carry out artificial regulatory easily and select, can control refrigerator, refrigerator-freezer indoor temperature exactly.2, have the delay protection effect, avoid high frequent to start or do not shut down for a long time, save electric energy, improve compressor serviceable life.3, can grasp the duty of electrical equipment at a glance.

Description of drawings is described in further detail the utility model below in conjunction with the drawings and specific embodiments.

Fig. 1 is the utility model circuit diagram.

The described energy-conservation temperature controller circuit of embodiment Fig. 1 comprises: a rectification filter glass circuit, a time-delay output control circuit, a temperature-control circuit, a duty display circuit and a relay.

Described current rectifying and wave filtering circuit comprises dropping resistor R ₀, bridge rectifier (D ₀-D ₃), filter capacitor C ₀, external power forms the 12V direct supply through current rectifying and wave filtering circuit, for other circuit of temperature controller provides power supply.

Described time-delay output control circuit contains 555 type ic chips, resistance R ₁, R ₂And capacitor C ₁Be connected in series between direct current 12V power supply and the system earth resistance R ₁K is in parallel with quick start switch, capacitor C ₁And resistance R ₂Between contact be connected with 555 type ic chip input ends, be connected to a high frequency capacitance C between ic chip and the system ₂

Described temperature-control circuit is by the temperature detect switch (TDS) (t of 5 parallel connections ₁-t ₅), resistance R ₃, triode BG ₁Form, and be series between the output terminal and system earth of ic chip triode BG ₁Grounded emitter, temperature detect switch (TDS) t ₁With hand switch K ₁Series connection, temperature detect switch (TDS) t ₂With hand switch K ₂Series connection, by that analogy, switch t ₁-t ₅The temperature definite value be respectively 0 ℃ ,-1 ℃ ,-2 ℃ ,-3 ℃ ,-4 ℃, hand switch K ₁-K ₅There is and have only one to be in closure state.

Described relay J is connected to 12V direct supply and triode BG ₁Between the collector, relay diode D who shields in parallel ₆

Described duty display circuit is by the resistance R that is series between 12V direct supply and the system earth ₄, light emitting diode D ₄, D ₅And resistance R ₅Form D ₄, D ₅Between contact and relay J, triode BG ₁Between contact be connected.

The course of work is, connect extraneous power supply, the 220V alternating current is through current rectifying and wave filtering circuit output 12V direct supply, time-delay output control circuit its ic chip output terminal output voltage after delaying time, select design temperature this moment, connects down corresponding hand switch, when indoor temperature is equal to or higher than design temperature, temperature detect switch (TDS) is connected, triode BG ₁There is electric current to pass through, the relay J energized, the compressor operating refrigeration, when indoor temperature was lower than design temperature, temperature detect switch (TDS) disconnected, triode BG ₁End, the relay J deenergization, compressor quits work, as depresses quick start switch K, capacitor C ₁Rapid charge, entire work process are also accelerated thereupon, reach quick startup purpose.

The resistance of present embodiment, the optimum value of electric capacity are: R ₀=1M Ω, R ₁=1M Ω, R ₂=1K Ω, R ₃=10K Ω, R ₄=R ₅=5.1K Ω, capacitor C ₀Adopt 16V470 μ F, C ₁Adopt 16V220 μ F, C ₂Adopt 16V0.1 μ F.

The light emitting diode D of present embodiment ₄, D ₅With K switch, K ₁-K ₅Be installed on the panel of refrigerator (cabinet), K switch is made back springing type button, K ₁-K ₅Make the pressure type keyswitch.

Claims (2)

1, a kind of energy-conservation temperature controller is characterized in that; It is made up of current rectifying and wave filtering circuit, time-delay output control circuit, temperature-control circuit, duty display circuit and relay J, and current rectifying and wave filtering circuit is by dropping resistor R ₀, bridge rectifier (D ₀-D ₃), filter capacitor C ₀Form, output 12V direct supply uses for time-delay output control circuit, temperature-control circuit, duty display circuit and relay J; The time-delay output control circuit is by 555 type ic chips, resistance R ₁, R ₂And capacitor C ₁, C ₂And quick start switch K forms resistance R ₁, R ₂And capacitor C ₁Be connected in series between 12V direct supply and the system earth resistance R ₁Quick start switch K in parallel, capacitor C ₁And resistance R ₂Between contact and 555 type ic chip input ends join, be connected to a high frequency capacitance C between ic chip and the system ₂Temperature-control circuit is by 2-10 temperature detect switch (TDS), resistance R in parallel ₃, triode BG ₁Form, and be series between the output terminal and system earth of ic chip triode BG ₁Grounded emitter, relay J are connected to 12V power supply and triode BG ₁Between the collector, hand switch of each temperature detect switch (TDS) series connection, other hand switch all disconnects when a hand switch is closed, relay J diode D in parallel ₆The duty display circuit is organized R by electricity ₄, R ₅With light emitting diode D ₄, D ₅Form R ₄, D ₄, D ₅, R ₅Be connected in series between 12V direct supply and the system earth D ₄, D ₅Between contact and relay J, triode BG ₁Between contact be connected; Light emitting diode D ₄, D ₅Be installed on the appliance panel with quick start switch K and hand switch, hand switch is made the pressure type button, display setting temperature digital value on the hand switch pressure type button, and quick start switch is made the back springing type button.

2, by the described energy-conservation temperature controller of claim 1, it is characterized in that: it constitutes shell by a close glass tube of envelope, glass tube inner chamber two ends are equipped with conductor and mercury respectively, conductor and mercury contact when being equal to or higher than set temperature value, do not contact when being lower than set temperature value, conductor is connected a lead respectively with mercury and extends to outside the pipe.