JPS6380181A - Automatic controller for refrigerator - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an automatic control device for a refrigerator that allows test operation in a short period of time before shipment from a factory.

BACKGROUND OF THE INVENTION In recent years, the development of electronic technology for controlling refrigerators has been remarkable, and test runs of refrigerators unique to the time of shipment from the factory are now being carried out.

An example of the conventional automatic control device for the above-mentioned cold kJilf will be described below with reference to the drawings.

FIG. 3 is a block diagram of a conventional automatic control device, and FIG. 4 is an operation flowchart of the conventional automatic control device.

A compressor control circuit 1 controls the compressor of the refrigerator, and outputs a signal S to a first timer circuit 2 that counts the time until defrosting starts.

3 is a defrost control circuit that forcibly turns off the compressor and controls the defrost heater, which inputs the signal S2 from the first timer circuit 2 and outputs the signal S3 to the second timer circuit 4 that counts the defrost time. .

The operation of the automatic control device configured as described above will be explained below using the operation flowchart shown in FIG.

First, when the conventional automatic control device is powered on, the compressor is controlled by the compressor control circuit 1 and outputs the signal S1 to the first timer circuit 2 in step 1.

The time at this time is designated as TA. Next, as step 2, the first
The timer circuit 2 compares the TA with a preset time (hereinafter referred to as T1), and if formula 1) is satisfied, outputs the signal S2 and goes to step 3. Otherwise, goes to step 1. Advance the logic.

TA>T, ... Song... (1) Next, in step 3, the compressor is forcibly turned off in the defrost control circuit 3 to control the defrost heater, and the signal S3 is sent to the second timer (9) path 4. input. This time is TB
shall be.

Next, in step 4, the second timer circuit compares the TB with the preset time e or less (T2), and if the formula 2) is satisfied, proceed to step 1. Otherwise, proceed to step 3. .

TB>T2 ...... During the repetition of the above operations, T4. Refrigerator data will be collected after T2 has elapsed.

Problems to be Solved by the Invention However, in the above configuration, T1. There is a problem in that data on the refrigerator cannot be collected until the time T2 has elapsed, and it takes a very long time.

In view of the above-mentioned problems, the present invention provides an on/off switch for the compressor.
To provide an automatic control device equipped with a test control circuit that can collect refrigerator data by counting the number of FF operations, regardless of the time until defrost and the defrost time.

Means for Solving the Problems In order to solve the above problems, the automatic control device for a refrigerator of the present invention includes a count circuit that counts the number of ON/OFF operations of the compressor, and a circuit that determines whether or not the number of times the compressor is turned ON/OFF.
The apparatus includes a tenth control circuit that controls the compressor, a second control circuit that controls the compressor and the defrost heater, and a display circuit that indicates the end of the test operation.

Effects According to the present invention, data at the time of shipment from the factory can be collected by counting the number of ON/OFF operations of the compressor regardless of the operating time of the compressor using the above-described configuration.

Embodiment An automatic control device for a refrigerator according to an embodiment of the present invention will be described below.

FIG. 1 and FIG. 2 are a block diagram and an operation flowchart, respectively, of an embodiment of an automatic control device for a refrigerator according to the present invention.

5 is a first counting circuit that counts the number of ON/OFF operations of the compressor, and when the count reaches a specified number of times, a signal S4 is inputted to the first control circuit 6 that turns off the compressor and controls the defrost heater. A 20th counting circuit 7 counts the number of ON/OFF operations of the compressor after defrosting, inputs a signal S6, and outputs a signal S6 to a second control circuit 8 that stops all controls of the refrigerator. 9 is a display circuit which receives the signal S7 from the second control circuit and displays that all refrigerator functions have been completed.

An embodiment of the automatic control device of the present invention configured as described above will be explained using the operational flowchart of FIG. 2.

- First, when the power is turned on, in step a, the number of ON/OFF operations of the compressor is counted, and in step b, if the number of times reaches 3, proceed to step C. If it is less than that, the logic advances to step a.

Next, in step C, the first control circuit 6 turns off the compressor, controls the defrost heater, and maintains this state for 16 minutes until the defrost ends, and the defrost end signal S5 is input to the second counting circuit. .

Next, in step d, turn on/off the compressor after defrosting.
The number of OFF operations is counted, and if the number of OFF operations in the circuit reaches 2 in stem C, the logic advances to step e, and if it is less than that, the logic advances to step d.

At step f, all controls are stopped and signal S7 is input to the display circuit.

Display that the process is completed in step q.

As described above, according to this embodiment, the compressor ON/O
Counts the number of FF operations, and when the specified number of times is reached, defrost is entered regardless of the compressor operating time.After defrosting is completed, the number of ON/OFF operations of the compressor is counted, and when the specified number of times is reached, all controls of the refrigerator are stopped. , it is possible to significantly reduce the time required for test operation at the time of factory shipment.

In addition to the effects of the invention, the present invention counts the number of times the compressor is operated after the power is turned on, and when it reaches a specified number of times, it starts defrosting.
By installing a test control circuit that counts the number of ON/OFF operations of the compressor after defrosting and stops all controls of the refrigerator when the specified number of times is reached, and displays the information, the time required to collect refrigerator data for factory shipment is significantly increased. can be shortened to

[Brief explanation of the drawing]

FIGS. 1 and 2 are a block diagram and an operation flowchart of an automatic refrigerator control device according to an embodiment of the present invention, and FIGS. 3 and 4 are a block diagram and an operation flowchart of a conventional refrigerator automatic control device, respectively. be. -6...First count circuit, 6...
first control circuit, 7... second count circuit,
7...Second control circuit, 9...Display circuit. Name of agent: Patent attorney Toshio Nakao and one other name
1 Ward Figure 3 m4 Figure

Claims (1)

[Claims] A first counting circuit counts the number of ON/OFF operations of the compressor after the power is turned on, a second counting circuit counts the number of ON/OFF operations of the compressor after defrosting, and a second counting circuit counts the number of ON/OFF operations of the compressor after defrosting. The first control circuit controls the compressor and defrost heater by determining whether the number of ON/OFF operations after defrosting is the specified number of times, and the first control circuit determines whether the number of ON/OFF operations after defrosting is the specified number of times and controls all functions of the refrigerator. An automatic control device for a refrigerator, comprising a test control circuit consisting of a second control circuit for stopping everything and a display circuit for indicating that everything has stopped.