KR950002333Y1 - Defrosting cycle control circuit unit in absorption refrigerator - Google Patents

Abstract

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Description

Defrost cycle control circuit of absorption refrigerator

1 is a circuit diagram according to the present invention.

2 is an output state timing diagram of a clock generator.

3 is a timing diagram of an output state after separation of use outputs by time.

4 is a circuit diagram according to a conventional design.

5 is a timing diagram of each part according to the conventional design.

* Explanation of symbols for main parts of the drawings

1: Clock generator 2: Hourly output output separator

3: defrost cycle control unit 4: defrost driving unit

5: defrost control unit 6: clock detection unit

The present invention relates to a defrosting cycle control circuit of an absorption refrigerator, and in particular, by selectively adjusting the time from the power-on of the appliance to the initial defrosting to select the repeated defrosting time according to the convenience of the consumer The present invention relates to a defrosting cycle control circuit of an absorption type refrigerator that enables the automatic deactivation of the defrosting operation in accordance with the high temperature state of the refrigerator.

In general, the cooling and defrosting of the absorption refrigerator is a 24 hour cycle to perform a cooling operation for a certain time, a defrosting for a certain time.

For example, in a refrigerator, the cooling time is 22 hours, the defrost time is 2 hours, and when the cycle is repeated, the consumer powers on the refrigerator at 5 pm and the refrigerator defrosts between 3 pm and 5 pm every day. Will be performed.

In the conventional case, the defrost circuit of the refrigerator detects the power-on time of the device, and the waveforms shown in FIGS. 5A and 5B are generated in the IC (1) and (2). The cooling operation is performed for a predetermined period L having a predetermined time (X + Y + Z), and after completion of the cooling operation, the IC 1 becomes a low level signal as long as the " Y " Since the low level signal is also outputted, the defrost driver 3 of the refrigerator performs initial defrosting until each signal becomes a high level signal. After that (after completion of the defrosting operation), the generated waveform is generated at a predetermined time (X '+ Y + Z) and a period. That is, the conventional defrost cycle control circuit performs a cooling operation for a certain period (L) of the waveform having a certain time (X + Y + Z) only at the first power-on, and performs an initial defrosting operation during the "Y" period. After that, the cooling time (X + Y + Z) and the defrost time (Y) are repeatedly performed at regular intervals.

For example, if you set X: 6 hours, Y: 2 hours, Z: 8 hours, cooling is performed for 16 hours only at the first power-on, and defrosting is performed for 2 hours. After the completion of defrosting, 22 hours of cooling and 2 hours of defrosting are repeatedly performed at regular intervals.

Therefore, if the consumer wants to perform the defrosting time of the refrigerator in the early morning time (the time when the refrigerator is less used), the refrigerator must be operated in the early morning time, which is not only inconvenient to use, but also the loss of temperature and unnecessary according to the high use condition of the refrigerator and the food load. There are drawbacks such as waste of power.

Therefore, the present invention, in order to alleviate the drawbacks of the prior art as described above, by arbitrarily adjusting the time from the power-on to the initial defrosting only at the time of power-on of the refrigerator, the defrosting time which is periodically repeated is selectively set according to the convenience of consumers. At the same time it is to be able to automatically stop the defrosting operation by sensing the temperature according to the conditions of use of the refrigerator.

1 is a circuit diagram according to an embodiment of the present invention, each of which includes a clock generator 1 for outputting a clock waveform having a predetermined period L, and a high level signal corresponding to a predetermined period in response to an output signal of the clock generator. signal (Q ₀ -Q ₆₎ is used over time that occur are separated sequentially output the separating section (2) and the defrosting by selecting one of the output signals (Q ₀ -Q ₆₎ means to set the first time the defrost optionally Defrost drive section 4 and the refrigerator's internal temperature state to perform the defrosting operation by receiving the output signal of the cycle control unit 3 and the clock generator and the use output separation unit for each hour and automatically detects the defrosting action according to the detection result It is composed of a defrosting control unit 5 for stopping and a clock detecting unit 6 for transmitting a reset signal to the use output separating unit for each time after receiving a signal from the clock generating unit.

2 is a timing diagram showing an output state of the clock generator, and FIG. 3 is a timing diagram showing an output state of the hourly use separator.

Referring to the effect of the present invention configured as described above are as follows.

The present invention in adjusting the defrosting cycle of the absorption refrigerator, as shown in FIG. 1, the output signal (Q ₀ -Q) of the clock generator 1, the hourly use output separator 2 and the hourly use output separator ₆ ) Defrost cycle control section 3, defrost driving section 4, clock detection section 6, which is a means for arbitrarily setting the initial defrosting time by selecting one of them, The time can be adjusted arbitrarily.

When power is supplied to the absorption refrigerator, the clock generator 1 applies a waveform having a predetermined period as shown in FIG. 2 to the hourly output separator 2 and the clock detector 6 at the same time. In the output separation unit 2, the output signals Q ₀ -Q ₆ for outputting the high level signals corresponding to the predetermined period L are respectively separated by time and sequentially output as shown in FIG. When the defrosting time is set by the consumer by selecting one of the output signals, the set signal becomes the initial driving time of the defrosting, and one of the output signals selected by the defrosting driver 5 is applied. is applied becomes, the output signal selected by the output of the continuous change in the output signal (Q ₀ -Q ₆₎ of the output time using the separation unit (2) in the process soon as a high level signal at the same time the output of the clock generator (1) When the high level signal is switched from the low level signal, the defrost driver 4 performs the defrosting operation until the respective signals are inverted, and the clock generator outputs the high level signal and the selected output generator 2 When the output signal becomes a low level signal, the initial defrosting operation ends.

In addition, when the clock detecting unit 6 reaches the point “A”, that is, at 24 hours as shown in FIGS. 2 and 3 in the state of continuously receiving the clock signal of the clock generating unit 1, the reset signal is reset. Is reset by inputting to the reset stage RES of the use output separator 2 for each hour, and all the operations are repeatedly performed every 24 hours according to the set defrost time.

Accordingly, the absorption refrigerator always performs defrosting for a predetermined time when the selected output signal Q ₀ -Q _{6 of the} hourly use output separation unit 2 is a high level signal only at the first power-on, and resets after the first defrosting. The time until it is added up to the time from power on to defrost.

Here, the cooling operation time and the defrosting time after the reset are repeatedly performed at a constant cycle.

For example, the output of the clock generator is continuously generated by repeating the low level signal X for 2 hours and the high level signal Y for 2 hours, and the output signal Q ₀ − When the selected output signal Q ₄ of Q ₆ ) becomes the high level signal, the time corresponding to the high level signal of the output signal among the signals of the clock generator is 16 hours, and until the output of the clock generator becomes the high level signal. 2 hours is defrosting time. The time from the defrost to point "A" is six hours.

Therefore, the cooling time is 22 hours from the end of defrost until just before defrost.

As described above, an arbitrary time can be obtained only at the first power-on, and then repeated periodically.

As can be seen from the above, the present invention has an advantage that the user can arbitrarily set the defrosting time which is periodically repeated according to the convenience of the consumer since the user can arbitrarily adjust the time from the power-on of the refrigerator to the first defrosting. .

Claims (1)

A clock generator 1 for transmitting a clock waveform having a predetermined period and each output signal Q ₀ -Q ₆ having a high level signal for a predetermined period in response to the output signal of the clock generator are sequentially separated. The output signal of the generated hourly output output separating section (2), the defrosting period control section (3) which is a means for arbitrarily setting the initial defrost time by selecting one of the output signals used, and the output signal of the clock generator and the hourly output output separating section Receiving the defrost drive unit (4) and the high temperature of the refrigerator to perform the defrosting action and the defrost control unit (5) and automatically stops the defrosting action according to the detection result and when a predetermined time passes A defrost cycle control circuit of an absorption type refrigerator, characterized in that it comprises a clock detector (6) for transmitting a reset signal to the use output separation unit for each hour.