JPH0442694Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Technical field of invention] The present invention relates to a refrigerator having a specification switching chamber.

[Technical background of the invention and its problems] In recent years, refrigerators have been provided that have specification switching compartments in addition to the freezer compartment and the refrigerator compartment.
In this device, for example, three specification changeover switches are provided on the operation section of the main body of the refrigerator, and a display device for displaying setting specifications is provided corresponding to each specification changeover switch.
Based on the operation of one of these specification changeover switches, the specification changeover chamber is switched to one of the freezer room specification, chilled room specification, and refrigerator room specification, and also The specifications are displayed on a display device. As the specification changeover switch, a triple lock type push button switch, a self-reset type push button switch, etc. are used.

By the way, in the above triple lock type push button switch, normally when one switch is turned on, the other switches are turned off. This 3
In a refrigerator that uses a series lock type push button switch as a specification changeover switch, if multiple switches are operated at the same time, all of the operated switches may turn on.
This causes a problem in which all the switches are turned off, and the specification settings in the specification switching chamber become undefined. In such a case, a place that should be set to refrigerator room specifications may be set to freezer room specifications, or conversely, a place that should be set to freezer room specifications may be set to refrigerator room specifications, and the items that should be frozen in the specification switching room may be set to freezer room specifications. There is a problem in which food deteriorates due to the influence of the refrigeration temperature, which has a difference between the freezing temperature, or food that should be refrigerated deteriorates due to the influence of the freezing temperature, which has a difference in temperature. cause

Furthermore, even in refrigerators that use a self-returning push switch as a specification changeover switch, the same problem as mentioned above occurs when multiple such switches are operated at the same time, resulting in food to be frozen or refrigerated in the specification changeover chamber. There is a problem that stored items such as food may deteriorate, and especially in the case of self-resetting type push switches, all switches are turned off when a power outage occurs, so the specification state of the specification switching room after the power outage is restored. The specifications of the freezer compartment, chilled compartment, or refrigerator compartment may be undefined, and the above-mentioned problem of deterioration occurs also in this case.

[Purpose of the invention] The purpose of the invention is to provide a refrigerator that can suppress deterioration of stored items in the specification switching room in the event of an erroneous operation of the specification switching switch or a power outage.

[Summary of the invention] The present invention is a device equipped with a specification switching chamber in which the specification state is set to be switched between a freezer compartment specification, a chilled compartment specification, and a refrigerator compartment specification based on the operation of a plurality of specification switching switches. switch signal output means for individually outputting a switch signal when the specification changeover switch is turned on; and when each of the switch signals is input individually, the specification changeover chamber is configured to be used for a freezing room in response to the input switch signal; a setting means for setting the switch to either the chilled room specification or the refrigerator room specification, and setting the switch to the chilled room specification when a plurality of switch signals are input at the same time;
Therefore, if multiple switches are turned on due to incorrect operation of the specification changeover switch, or if all switches are turned off due to such incorrect operation or power outage,
The specification switching chamber is set to a chilled chamber specification that has little temperature influence on foods to be frozen and foods to be refrigerated.

[Embodiment of the invention] An embodiment of the invention will be described below with reference to the drawings. First, in FIG. 2, reference numeral 1 denotes a refrigerator main body, in which a freezing chamber 2, a specification switching chamber 3, and a refrigerating chamber 4 are formed. Each of these chambers 2, 3, and 4 is supplied with cold air from a cooler chamber (not shown) through a duct, and in particular, the amount of cold air supplied to the specification switching chamber 3 is controlled by a damper device. The supply amount is controlled to be a large supply amount, a small supply amount, and an even smaller supply amount, and as a result, the specification switching chamber 3 is set to a freezer room specification with a large supply amount of cold air. , with a small amount of cold air supplied, the specification is set as a chilled room, and with an even smaller amount of cool air supplied, the specification is set as a refrigerator room. Reference numerals 5, 6, and 7 are doors for opening and closing the above-mentioned chambers 2, 3, and 4, respectively. Reference numeral 8 is an operating section, and this operating section 8 is located above the door 6 for the specification switching chamber 3 on the front of the refrigerator main body 1. It is located in the department. As shown in FIG. 1, this operating section 8 is provided with specification changeover switches 9, 10, and 11 for switching and setting the specifications of the specification changeover chamber 3, and also for displaying the set specifications. Light emitting diodes 12, 13 and 14 serving as display devices are arranged corresponding to each specification changeover switch 9, 10 and 11, respectively. The specification changeover switches 9, 10 and 11 are triple lock type push button switches. Next, in Figure 3,
Reference numeral 15 denotes a switching signal output circuit as switch signal output means comprising the specification changeover switches 9, 10 and 11, which outputs the first switching signal _S1 when the specification changeover switch 9 is turned on. , outputs a second switching signal _S2 when the specification changeover switch 10 is turned on,
When the specification changeover switch 11 is turned on, the third
When a _plurality of specification changeover switches are turned on, a switching signal corresponding to each switch is outputted. Reference numeral 16 denotes a switching signal determination circuit as a setting means, which selects the first to third signals provided from the switching signal output circuit 15.
According to the input pattern of the switching signals S ₁ to S ₃ , any of the drive signals Sk ₁ to Sk ₃ and the abnormality detection signal Se are outputted from the output terminals F, C, R, and E, respectively. When only the first switching signal _S1 is given, the first drive signal _Sk1 at a high level is output from the output terminal F, and when only the second switching signal _S2 is given, the first drive signal Sk1 at a high level is output from the output terminal C. the second drive signal of
Sk ₂ is output, and when only the third switching signal S ₃ is given, a high-level third drive signal Sk ₃ is output from the output terminal R, and other switching signal input patterns, that is, multiple switching signals are applied. When the switching signal is applied and when there is no switching signal input, a high level abnormality detection signal Se is output from the output terminal E. 17, 18 and 19
is a NOR circuit, both input terminals of the NOR circuit 17 are connected to the output terminal F of the switching signal determination circuit 16, and the output terminal is connected to the anode of the light emitting diode 12 for displaying the specifications of the freezer compartment. Damper device drive control circuit 2 via
It is connected to input terminal a of No. 1. Both input terminals of the NOR circuit 18 are connected to the output terminal R of the determination circuit 16, and the output terminal is connected to the anode of the light emitting diode 14 for displaying the specifications of the refrigerator compartment, and is also connected to the damper device drive control circuit via the inverter circuit 22. 2
1 input terminal b. Both input terminals of the NOR circuit 19 are connected to the output terminals C and E of the determination circuit 16, respectively, and the output terminal is connected to the anode of the light emitting diode 13 for displaying chilled room specifications, and is It is connected to the input terminal c of the damper device drive control circuit 21. The damper device drive control circuit 21 controls the drive of the damper device using high-level signals applied to each input terminal a, b, and c, and changes specifications when a high-level signal is applied to input terminal a. The damper device is driven and controlled to increase the amount of cold air supplied to the chamber 3, and when a high level signal is given to the input terminal c, the damper device is driven and controlled to decrease the amount of cold air supplied to the specification switching chamber 3. When a high level signal is applied to terminal b, drive control is performed to further reduce the amount of cold air supplied to the specification switching chamber 3.

Now, in the above configuration, the specification changeover switch 9
When only one of the switches 1 to 11 is operated (normal operation) and turned on, the switching signal output circuit 15 outputs any one of the first switching signal _S1 to the third switching signal _S3 , and the switch is turned on. The switching signal determining circuit 16 determines the first drive signal Sk 1 to the third drive signal Sk ₁ based on the switching signal.
Outputs one of Sk ₃ , and as a result, the specification switching chamber 3 is switched to one of the freezer compartment specification, chilled compartment specification, and freezing compartment specification based on the turned on specification switching switch, and the set The specifications are displayed by one of the light emitting diodes 12, 13 and 14.

By the way, if a plurality of specification changeover switches 9 to 11 are operated (erroneously operated), the plurality of specification changeover switches may be turned on, or all the specification changeover switches may be turned off. However, in this case, the switching signal output circuit 15 outputs a plurality of switching signals or no switching signal is output, so the switching signal determination circuit 16 outputs the abnormality detection signal Se from the output terminal E. As a result, the damper device is controlled by the damper drive control device 21 to reduce the amount of cold air supplied to the specification switching chamber 3, thereby setting the specification switching chamber 3 to the chilled room specification, and The light emitting diode 13 for displaying chilled room specifications emits light. As can be seen from this, unless the specification changeover switch is turned on alone, that is, if the specification changeover switches 9 to 11 are erroneously operated, the specification changeover chamber 3
The temperature is set to the chilled room specification, which is a temperature state between the temperature of the freezer room specification and the temperature of the refrigerator room specification. Therefore, even if the items to be stored in the specification switching chamber 3 are to be frozen or refrigerated, compared to the case where the settings are incorrectly set to the refrigerator or freezer specifications, the stored items are in the chilled chamber specifications, so the stored items are The temperature difference from the temperature required for the stored material becomes small, and as a result, deterioration of the stored material can be effectively prevented. Further, in this case, since the light emitting diode 13 for displaying the chilled room specifications is lit, it can be determined that an erroneous operation has been made if the user's intention is not to set the chilled room specifications.

In the above embodiment, the triple lock type push button switches 9 to 11 were used as the specification changeover switches, but if a self-reset type pushbutton switch is used as the specification changeover switch, all the pushbutton switches will be Even if it turns off, as can be seen from the above example,
When the power is restored, the specification switching room is set to the chilled room specification, and the light emitting diode for displaying the chilled room specification is lit up. Therefore, in this case as well, the same effect as in the above embodiment can be obtained. can.

[Effects of the invention] As is clear from the above description, the present invention has the excellent effect of suppressing deterioration of stored materials in the specification switching room even in the event of incorrect operation of the specification switching switch or power outage. .

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, with FIG. 1 being a partial front view of the operating section, FIG. 2 being a front view of the entire refrigerator, and FIG. 3 being a circuit diagram. In the figure, 1 is the refrigerator main body, 2 is the freezer compartment, 3 is the specification switching compartment, 4 is the refrigerator compartment, 8 is the operation unit, 9, 10, and 11
12, 13 and 14 are light emitting diodes (display devices); 15 is a switching signal output circuit (switch signal output means); and 16 is a switching signal determination circuit (setting means).

Claims (1)

[Scope of utility model registration request] In a device equipped with a specification switching chamber in which the specification status is switched between freezer compartment specifications, chilled compartment specifications, and refrigerator compartment specifications based on the operation of multiple specification switching switches, when each of the specification switching switches is turned on. switch signal output means for individually outputting switch signals; and when each of the switch signals is input individually, the specification switching chamber is changed to a freezing room specification, a chilled room specification, or a refrigerating room specification in response to the input switch signal. 1. A refrigerator comprising a setting means for setting one of the switch signals to a chilled room specification when a plurality of switch signals are input simultaneously.