CN2329920Y

CN2329920Y - Electricity-saving temp controller for refrigerator and chill box

Info

Publication number: CN2329920Y
Application number: CN 98212985
Authority: CN
Inventors: 郭守信
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-03-16
Filing date: 1998-03-16
Publication date: 1999-07-21
Anticipated expiration: 2008-03-16

Abstract

The utility model relates to an electricity saving temperature controller for a refrigerator and a freezer, which is composed of a feed circuit, a charging loop, a discharging loop, a control circuit, and an executive circuit. In the discharging loop, a BCD dial switch is connected with a resistance and a diode in parallel, and nine-grade different on-offs can be formed. The utility model can be used as the temperature controller without the modification of the existing refrigerator and the existing freezer, and the temperature controlling range is enlarged thereby. In the utility model, the original intensive refrigerating grade of the refrigerator or the freezer is reserved, and the temperature controlling grade and the energy-saving grade are additionally arranged on the utility model; the purposes of electricity saving and the food refrigeration can be reached thereby; under the non-energy-saving state, the utility model can be used as a time-delay protector.

Description

Refrigerator, refrigerator-freezer power saving thermostat

The utility model relates to a kind of refrigerator, refrigerator-freezer power saving thermostat.

Present household electric refrigerator, refrigerator-freezer temperature control scope are generally narrower; refrigerated storage temperature is lower, for some users who does not think frozen food, has only shutdown could realize purpose of power saving; and shut down the damage cause refrigerator easily, and refrigerated storage temperature is too low causes the user to get food inconvenience again.

The purpose of this utility model is to provide a kind of temperature-control range wide, and power saving effect is remarkable, and is easy to use, can play refrigerator, the refrigerator-freezer power saving thermostat of delay protection device effect again.

The technical solution of the utility model is as follows: it is to be made of power supply circuits, filter circuit of pressure-stabilizing, charge circuit, discharge loop, control circuit and executive circuit, the charge and discharge loop is connected with control circuit by power down switch, control circuit is connected with executive circuit, filter circuit of pressure-stabilizing, and filter circuit of pressure-stabilizing is connected with power supply circuits.

The utility model does not need existing refrigerator refrigerator-freezer is transformed, and directly use can be avoided the temperature controller in the refrigerator ice cabinet, enlarges the temperature-control range of refrigerator, refrigerator-freezer.This device had both kept the original strong cold shelves of refrigerator ice cabinet, had set up temperature control shelves and energy-conservation shelves again, thereby reached not only power saving but also purpose that can chilled food.This device is again the delay protection device of a refrigerator, refrigerator-freezer under non-power save mode.

Fig. 1 is the electrical schematic diagram of the utility model structure.

Fig. 2 is the circuit diagram of the utility model most preferred embodiment.

In order to make the utility model structure clear more complete, the utility model structure is described further below in conjunction with embodiment.

As shown in the figure: the utility model is made of power supply circuits, filter circuit of pressure-stabilizing, charge circuit, discharge loop, control circuit, executive circuit, charging and discharging circuit is connected with control circuit by power down switch, control circuit is connected with filter circuit of pressure-stabilizing with executive circuit, and filter circuit of pressure-stabilizing is connected with power supply circuits.In order to show the duty of the utility model thermostat, also be connected with indicating circuit at an end of control circuit.

As shown in Figure 2: power supply circuits are by D ₁～D ₄With C ₁, R ₁Form C ₁Be current limiting capacitance, by D ₁～D ₄Form bridge rectifier, R ₁With C ₁Parallel connection, their terminate at D ₃Output and D ₄Input between, the other end is connected with external power supply.Filter circuit of pressure-stabilizing is by C ₂, R ₂, WD, C ₃Be composed in series R ₂, C ₂Between serial connection point and power supply circuits in bridge rectifier D ₁With D ₂Output connect.Charge circuit is by R ₁₁R ₁₃D ₆C ₅Be composed in series long-time time-delay; By R ₁₂R ₁₃D ₆C ₅Be composed in series the short time time-delay; Realize the contact conversion by power down switch K., with the R in the charge circuit ₁₁R ₁₂An end be connected C in the filter circuit of pressure-stabilizing ₃And between the WD.Discharge loop is by R ₇～R ₁₀, D ₇Compose in parallel discharge loop and R with the BCD toggle switch ₁₃Form nine grades of different discharge times, produce nine grades of different start-stop ratios, promptly strong cold shelves 1: 1, temperature control shelves 1: 2～1: 7, energy-conservation shelves 1: 14,1: 15.Control circuit is 555 o'clock bases integrated package, i.e. IC pieces.Executive circuit is a relay J, when being in charged state the contact often open, the socket no-output; The contact is normally closed when being in discharge condition, and socket has output.Indicating circuit is by variable color light emitting diode D ₈, D ₉, resistance R ₃～R ₅With power down switch K (K _aAnd K _b) form, light is sent out orange in time-delay, green light during energy-saving run, and resetting to move glows.

When the utility model device was in energy-conservation shelves (1: 14,1: 15), still below 0 ℃, summer, still freshness-retained food, its power consumption were about about 1/10th of general power consumption below 10 ℃ at the temperature of refrigerating chamber of China's southern area refrigerator in winter.

When the utility model device is in strong cold state (is reset mode, just by R ₁₂R in parallel ₁₁And R ₁₃D ₆C ₅Form the power supply circuits of delaying time in short-term) time, this device is again a refrigerator delay protection device.

Claims

1, a kind of refrigerator, refrigerator-freezer power saving thermostat, it is characterized in that: it is to be made of power supply circuits, charge circuit, discharge loop, control circuit, executive circuit, the charge and discharge loop is connected with control circuit by power down switch, control circuit is connected with executive circuit, filter circuit of pressure-stabilizing, and filter circuit of pressure-stabilizing is connected with power supply circuits.

2, refrigerator according to claim 1, refrigerator-freezer power saving thermostat, it is characterized in that: control circuit also is connected with indicating circuit.

3, refrigerator according to claim 1 and 2, refrigerator-freezer power saving thermostat is characterized in that: discharge loop is by resistance, diode and the BCD toggle switch is in parallel constitutes.

4, refrigerator according to claim 1 and 2, refrigerator-freezer power saving thermostat is characterized in that: the resistance in current supply circuit, electric capacity also are connected in the bridge diode rectification circuit.