TWI473958B - Refrigerator-freezer - Google Patents

Description

Refrigerated refrigerator

The present invention relates to a refrigerated refrigerator.

In recent years, household refrigerators have been used for large capacity and low power consumption. Moreover, due to the high power saving intention, the need for users of the freezer refrigerator to use the method to save power is gradually increasing.

As a method for solving such a problem, in addition to the fact that the temperature of each storage chamber is set to be slightly higher, it is also proposed to provide a setting for cooling off the refrigerator compartment (for example, Patent Document 1). That is, the cold air flow path switching means for switching the flow path of the cold air is switched between the mode of supplying the cold air generated in the cooler to the two chambers of the refrigerating temperature zone chamber and the freezing temperature zone chamber, and the mode of supplying the cold air only to the freezing temperature zone. In the mode, when the cooling of the refrigerating compartment is turned off, the mode in which only the cold air is supplied to the refrigerating temperature zone is controlled so as not to supply the cold air to the refrigerating compartment.

[Advanced technical literature]

[Patent Document 1] JP-A-2004-251515

However, in the conventional refrigerating and freezing refrigerator, when the cooling control is temporarily stopped, even if the temperature of the storage chamber in which the cooling control has been stopped is abnormally increased, the cooling state is continued until the user cancels the setting, and the user stops the setting. In the case of the cooling control, the user does not find the problem of food spoilage stored in the storage room.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a refrigerator-freezer that can realize food protection in a storage chamber in which cooling control is set.

In order to solve the above problems, and to achieve the object, a refrigerator-freezer according to the present invention includes: a plurality of divided storage chambers; and a cooler that generates cold air that is supplied to cool the surrounding air and supplied to the respective storage chambers; The cold air flow generated by the cooler is introduced into the storage chambers; the air volume adjustment unit adjusts the inflow of cold air from the air passages to the storage chambers; and the temperature detecting unit detects the respective accommodations. The temperature of the chamber; the stop of the cooling setting unit, the stop of the cooling control of each of the storage chambers is individually set; and the control unit sets the storage chamber for stopping the cooling control by the stop cooling setting unit, and the air volume adjusting unit When the inflow of the cold air in the storage chamber is stopped, the cooling control is stopped, and the temperature detecting unit detects that the abnormal temperature of the temperature equal to or higher than the preset first temperature continues for a fixed time or longer, even if the cooling is stopped. In the setting of the control, the control of stopping the flow of the cold air in the storage chamber by the air volume adjusting unit is also released, and the cooling control is performed until the temperature detecting unit detects The temperature is returned to be preset to be The second temperature is lower than the second temperature of the first temperature.

According to the present invention, there is an effect that the food protection in the storage chamber in which the cooling control is set can be realized.

Hereinafter, embodiments of the refrigerator-freezer according to the present invention will be described in detail based on the drawings. Further, the present invention is not limited by the embodiment.

First embodiment

Fig. 1 is a front view showing an example of a refrigerating and freezing refrigerator according to a first embodiment of the present invention. Fig. 2 is a cross-sectional view of the freezer-refrigerated refrigerator of Fig. 1 taken along line A-A, and Fig. 3 is a cross-sectional view of the refrigerator-freezer of Fig. 1 taken along line B-B.

As shown in Fig. 1, the refrigerating and freezing refrigerator 1 is configured to have a plurality of divided storage chambers. Specifically, for example, it is configured to have a refrigerating chamber 100 in which a pair of left and right front doors are provided, and under the refrigerating chamber 100. The ice making chamber 200 and the switching chamber 300 provided in the left and right, the vegetable compartment 400 provided below the ice making compartment 200 and the switching compartment 300, and the freezing compartment 500 provided under the vegetable compartment 400. Here, the ice making compartment 200, the switching compartment 300, the vegetable compartment 400, and the freezing compartment 500 each have a front door. The switching chamber 300 is a storage chamber that can switch temperatures. An operation panel 5 that can adjust the setting of each storage chamber is provided on the door surface of the refrigerator compartment 100. As will be described later, a button (operation portion) that can be set to stop the cooling control of all or a part of the storage chamber of the refrigerator-freezer 1 is provided on the operation panel 5. The heat insulating heater 42 for preventing condensation is set in the refrigerator The left and right door compartments of the chamber 100.

Next, the internal configuration of the refrigerator-freezer 1 will be described using Figs. 1 to 3 . On the back side of the inside of the refrigerating and freezing refrigerator 1, the air path 4 is extended in the up-down direction, and this air path 4 connects the freezing chamber 500 and the refrigerating chamber 100. In the air passage 4, a cooler 3 is provided to generate cooling air to be supplied to the respective storage chambers, and a fan 2 (air supply portion) is disposed above the cooler 3, for example, and is cooled. The cold air cycle generated by the device 3. The cooler 3 and the fan 2 are disposed, for example, on the back side of the vegetable compartment 400. Further, the compressor 7 that compresses the refrigerant is disposed in the lower portion of the back side in the refrigerator-freezer 1. The cooler 3 together with the compressor 7 constitutes a refrigeration cycle.

In the refrigerator-freezer 1 , a windshield as an air volume adjusting unit is provided in each of the storage compartments of the refrigerating compartment 100, the ice-making compartment 200, the switching compartment 300, and the vegetable compartment 400, and the windshield adjusts to flow directly or indirectly from the airway 4. Cooling capacity. Specifically, the refrigerating compartment 100 is provided with the refrigerating compartment windshield 21 at the upper end of the air passage 4, and the refrigerating compartment windshield 21 is opened and closed to adjust the inflow amount of the cold air directly flowing into the refrigerating compartment 100 from the air passage 4. In the ice making chamber 200, the vegetable compartment windshield 23 is provided in the air passage 25a that connects the ice making chamber 200 and the air passage 4, and the windshield 24 is opened and closed to adjust the direct flow from the air passage 4 into the ice making chamber 200. The inflow of cold air. Further, in the ice making chamber 200, a refrigerating compartment return passage 8 that communicates with the refrigerating compartment 100 at one end and communicates with the vegetable compartment 400 at the other end is provided. The refrigerating compartment return passage 8 constitutes a return air path of the cold air sent to the refrigerating compartment 100 by the fan 2. Further, the ice maker 210 is disposed in the ice making chamber 200. In the switching chamber 300, the switching chamber windshield 22 is provided in the air passage 25b that connects the switching chamber 300 and the air passage 4, and is adjusted by opening and closing the switching chamber windshield 22. The inflow amount of the cold air directly flowing into the switching chamber 300 from the air passage 4. Further, in the switching chamber 300, a refrigerating compartment return passage 8 that communicates with the refrigerating compartment 100 at one end and communicates with the vegetable compartment at the other end is provided. In the vegetable compartment 400, the vegetable compartment windshield 23 is placed in the refrigerating compartment return passage 8 in the ice making compartment 200 and the switching compartment 300, and the vegetable compartment windshield 23 is opened and closed to adjust the indirect flow of vegetables from the wind tunnel 4. The inflow of cold air in chamber 400. The vegetable compartment of the air passage that connects the vegetable compartment 400 and the freezing compartment 500 uses the return path 9 to constitute a return air path of the cool air that is sent to the refrigerating compartment 100 by the fan 2. Further, although not shown, the freezer compartment damper can be installed in the air passage 4, and the inflow amount of the cold air directly flowing into the freezer compartment 500 from the air passage 4 can be adjusted by opening and closing the freezer compartment windshield. Further, if the air volume adjusting unit can adjust the inflow amount of the cold air from the air passage 4 to each of the storage chambers, it may be other than the windshield.

The heat retention heater 41 is disposed in the vegetable compartment 400. Used to adjust the room temperature to an appropriate temperature. Further, the tube 61 for injecting water from the water supply tank 110 to the ice maker 210 has a heat retention heater 43 for the purpose of preventing freezing.

The temperature measuring units are provided in the respective storage chambers of the refrigerator-freezer 1 . That is, the freezing compartment thermistor 34 is disposed in the freezing compartment 500, the vegetable compartment thermistor 33 is disposed in the vegetable compartment 400, the ice making compartment thermistor 35 is disposed in the ice making compartment 200, and the switching chamber thermistor 32 is disposed. In the switching chamber 300, the refrigerator compartment thermistor 31 is disposed in the refrigerating compartment 100.

The door switch (door opening/closing detecting unit) provided in each of the storage chambers detects the opening and closing state of the doors of the respective storage chambers. That is, the refrigerating compartment door switch 11 outputs a signal to the control circuit board 6 in response to the opening and closing state of the refrigerating compartment door. About the switching room The same applies to the door switch 12, the vegetable compartment door switch 13, the freezing compartment door switch 14, and the ice making compartment door switch 15. The control circuit board 6 is provided on the back surface of the refrigerator-freezer 1.

Next, the outline of the cooling of the refrigerator-freezer 1 will be described using Figs. 1 to 3 . The cooler 3 is operated by the compressor 7 to circulate the refrigerant, and is cooled by heat exchange with the surrounding air. The fan 2 blows the wind to the cooled cooler 3, whereby the cold air passes through the air passage 4, and is circulated in the refrigerating compartment 100, the ice making compartment 200, the switching compartment 300, the vegetable compartment 400, and the freezing compartment 500, thereby cooling each Containment room. At this time, the refrigerating compartment return passage 8 and the vegetable compartment return passage 9 constitute a return air passage of the refrigerant sent by the fan 2.

Because the temperature at which the cooler is blown is generally as low as -20 ° C or lower, when the cold air is directly sent to each storage chamber, the storage chamber (refrigeration chamber 100, vegetable compartment) of the refrigerating temperature zone that maintains the temperature inside the refrigerator at a temperature of 0 ° C or higher 400 and the switching chamber 300 set to the refrigerating temperature zone are not controllable to the set temperature, and the food is frozen. In order to prevent this, the refrigerating compartment windshield 21, the switching compartment windshield 22, the vegetable compartment windshield 23, and the ice making compartment windshield 24 are opened and closed, and the inflow amount of the cold air from the air passage 4 or the heat insulating heater is adjusted. 41 is energized and maintained at an appropriate temperature. Suitable temperature means that, for example, the refrigerating compartment 100 is about 4 ° C and the vegetable compartment 400 is about 7 ° C. Further, in the case where the storage temperature of the freezing temperature zone (the ice making compartment 200, the freezing compartment 500, and the switching compartment 300 set to the freezing temperature zone) is maintained at a temperature lower than 0 ° C, the appropriate temperature is, for example, About -18 ° C.

Fig. 4 is a control block diagram of the refrigerator-freezer 1. The control circuit board 6 has microcomputers 51, 52. In the microcomputer 51, input the refrigerator with thermistor The temperature of each of the containment chambers obtained by the resistor 31, the switching chamber thermistor 32, the vegetable compartment thermistor 33, the freezer compartment thermistor 34, and the ice making chamber thermistor 35, and the control circuit board 6 detects the temperature of each of the containment chambers . The microcomputer 51 is in charge of the overall control of the refrigerating and freezing refrigerator 1, and the control performs the windshield of each of the storage compartments according to the temperature of each of the storage chambers (the refrigerating compartment windshield 21, the switching compartment windshield 22, the vegetable compartment windshield 23, and the system). The opening and closing control of the ice chamber damper 24 or the like, the rotation speed control of the fan 2, and the output of the command to the microcomputer 52 of the compressor driver perform the rotation speed control of the compressor 7, the control of the heat retention heaters 41 to 43, and the like. Moreover, the microcomputer 51 can detect the contents of each of the storage compartments by inputting signals from the refrigerating compartment door switch 11, the switching chamber door switch 12, the vegetable compartment door switch 13, the freezing compartment door switch 14, and the ice making compartment door switch 15. Door opening and closing state and door opening and closing frequency. In other words, the microcomputer 51 has a function of counting the number of times of opening and closing of the door based on the output signals from the respective door switches, whereby the number of door opening and closing can be obtained as the number of door opening and closing in the fixed period.

Further, the operation panel 5 is provided with a button (stop cooling setting unit) that can set the cooling control of the storage chamber or a part of the storage chambers in which all of the refrigerators 1 are stopped, and is provided on the operation panel 5, and is input by operating the button. The information is sent to the microcomputer 51, and the freeze-freezer 1 is controlled in conjunction with the setting of the stop cooling control. Specifically, when the cooling control for stopping the storage chamber is set, the microcomputer 51 closes the windshield that can adjust the cold air flowing into the storage chamber.

Next, an operation in the case where the refrigerating and freezing refrigerator 1 of the present embodiment stops cooling the storage chamber of the freezing temperature zone will be described. Here, as a storage chamber for cooling the freezing temperature zone, for example, when the cooling of the ice making compartment 200 is stopped, For example, it is explained using the flowchart of FIG. Fig. 5 is a flow chart showing the operation of this embodiment.

First, the microcomputer 51 determines whether or not the stop cooling setting is made (S1). The presence or absence of the stop cooling setting can be determined in accordance with the setting information input from the operation panel 5. In other words, the microcomputer 51 determines that the cooling setting is stopped when the cooling is stopped via the operation panel 5, and determines that there is no stop cooling setting. As a result of the determination, in the case where the cooling setting is not stopped (NO in S1), the microcomputer 51 is controlled to continue the normal operation (S2). On the other hand, when it is set to stop cooling the ice making chamber 200 (YES in S1), the microcomputer 51 determines whether or not the abnormal temperature continues for a fixed time T1 based on the input of the temperature information from the ice making chamber thermistor 35 (S3). ). Here, the abnormal temperature is defined as a temperature equal to or higher than the preset temperature θ 1 (first temperature), and θ 1 is set based on the viewpoint of food protection in the storage chamber. As a result of the determination, when it is determined that the abnormal temperature has not continued for a fixed time period T1 (NO in S3), the microcomputer 51 stops the cooling control and continues to close the ice making compartment windshield 24 (S5).

On the other hand, when it is determined that the abnormal temperature has continued for a fixed time period T1 (YES in S3), the microcomputer 51 opens the ice making chamber windshield 24 to restart the cooling (S4). Next, the microcomputer 51 determines whether or not the temperature of the ice making chamber 200 has fallen below the temperature θ 2 (second temperature) (S6). Here, θ 2 is preset to a temperature lower than θ 1 and is a normal temperature different from the abnormal temperature. Then, when the temperature of the ice making compartment 200 is lowered to θ 2 or less (YES at S6), the microcomputer 51 closes the ice damper 24 for returning to the stop cooling control (S5). On the other hand, when the temperature of the ice making compartment 200 does not fall below θ 2 (NO in S6), the process returns to S1. In addition, T1, θ 1. θ 2 is, for example, T1 = 10 minutes, θ 1 = 0 ° C, and θ 2 = -10 ° C.

The case where the cooling chamber 500 is set to the switching chamber 300 of the freezing temperature zone is also the same as the above description.

Further, in the refrigerator-freezer 1, the storage compartment for cooling the refrigerating temperature zone can be stopped, and the same can be controlled according to the flowchart of Fig. 5. For example, in the case where the cooling of the refrigerating compartment 100 is stopped, T1 = 10 minutes, θ 1 = 15 ° C, and θ 2 = 4 ° C can be employed.

As described above, according to the present embodiment, the abnormal temperature continues for a fixed period of time in the storage chamber in which the cooling control is set, and even if the setting of the cooling control is stopped, the closing of the windshield is temporarily released. Since the cooling control is performed at the normal temperature, the food protection in the storage chamber in which the cooling control is stopped can be realized. Here, the storage compartment in which the cooling control is stopped may be a freezing temperature zone or a refrigerating temperature zone or a storage compartment of both. In particular, by stopping the storage chamber of the freezing temperature zone having a large temperature difference from the temperature around the freezer refrigerator, a power saving effect of about 10% or more can be obtained. On the other hand, in the conventional refrigerator-freezer, since the cooling control is stopped only in the storage compartment of the refrigerating temperature zone, the temperature difference between the temperature of the storage compartment and the temperature around the refrigerating refrigerator is small, and a large power saving effect cannot be obtained.

Second embodiment

Fig. 6 is a flow chart showing the operation of this embodiment. In addition, since the configuration of the refrigerator-freezer 1 of this embodiment is the same as that of the first embodiment, detailed description is omitted. Hereinafter, an operation of stopping the cooling control of, for example, the vegetable compartment 400, the ice making compartment 200, or the refrigerating compartment 100 will be described with reference to Fig. 6 .

First, the microcomputer 51 determines whether or not the stop cooling setting is made (S11). As a result of the determination, in the case where the cooling setting is not stopped (NO in S11), the microcomputer 51 is controlled to continue the normal operation (S12).

When the setting of the stop of cooling is stopped (YES in S11), the microcomputer 51 determines whether or not the cooling control of the vegetable compartment 400 is stopped (S13). In other words, as described in the first embodiment, it is determined whether or not the vegetable compartment 400 is in a stopped cooling state by closing the vegetable compartment windshield 23. As a result of the determination, when the cooling control of the vegetable compartment 400 is stopped (YES in S13), the microcomputer 51 turns off the heat retention heater 41 (S14). That is, the energization of the heat retention heater 41 is stopped. In addition, it is also possible to replace the energization and to reduce the energization. When the energization of the heat retention heater 41 is stopped or weakened, since the room temperature rises due to the closing of the windshield in the storage chamber in which the cooling control is set, it is not necessary to use the heat retention heater to heat. When the cooling control of the vegetable compartment 400 is not stopped (NO at S13), the process proceeds to S15.

Next, the microcomputer 51 determines whether or not the cooling control of the ice making compartment 200 is stopped (S15). As a result of the determination, when the cooling control of the ice making compartment 200 is stopped (YES at S15), the microcomputer 51 turns off the heat retention heater 43 (S16). That is, the energization of the heat retention heater 43 is stopped. In addition, it is also possible to replace the energization and to reduce the energization. When the cooling control of the ice making compartment 200 is not stopped (NO at S15), the process proceeds to S17.

Next, the microcomputer 51 determines whether or not the cooling control of the refrigerating compartment 100 is stopped (S17). As a result of the determination, when the cooling control of the refrigerating compartment 100 is stopped (YES in S17), the microcomputer 51 turns off the heat retention heater 42 (S18). That is, the energization of the heat retention heater 42 is stopped. In addition, it can be used as an alternative to stop energizing. And the power is weakened. When the cooling control of the refrigerating compartment 100 is not stopped (NO at S17), the process returns to S11.

As described above, according to the present embodiment, the storage chamber in which the cooling control is stopped is set, and the heat insulating heater that is not heated is controlled to be closed, whereby a larger power saving effect can be obtained. Further, of course, the present embodiment can be applied to any storage chamber having a heat retention heater. The other operations and effects of the embodiment are the same as those of the first embodiment.

Third embodiment

Fig. 7 is a flow chart showing the operation of this embodiment. In addition, since the configuration of the refrigerator-freezer 1 of this embodiment is the same as that of the first embodiment, detailed description is omitted. Hereinafter, an operation of stopping the cooling control of the ice making chamber 200, for example, will be described with reference to Fig. 7.

First, the microcomputer 51 determines whether or not the stop cooling setting is made (S21). As a result of the determination, when there is no stop cooling setting (NO in S21), the microcomputer 51 is controlled to continue the normal operation (S22).

When it is set to stop cooling the ice making compartment 200 (YES in S21), the microcomputer 51 counts the door opening/closing frequency of the ice making compartment 200 (S23). In other words, the microcomputer 51 counts the number of door opening and closing of the ice making compartment 200 in the predetermined time period T2 based on the output signal from the ice making compartment door switch 15, and determines the door opening and closing frequency from the number of opening and closing of the door. Here, the predetermined time T2 is the preset time.

Next, the microcomputer 51 determines whether or not the number of door opening and closing in the predetermined time T2 is less than N1 (S24). Here, N1 is a preset positive integer. As a result of the determination, when the number of door opening and closing times is N1 or more (NO in S24), the microcomputer 51 is controlled to return to the normal operation (S22). On the other hand, at the door When the number of closed times is less than N1 (YES at S24), the microcomputer 51 counts the accumulated number of door opening and closing times. In other words, the microcomputer 51 obtains the cumulative number of door opening and closing times from a certain reference time, and determines whether or not the number of times is less than N2 (S25). Here, N2 is a preset positive integer. As a result of the determination, when the number of accumulated door opening and closing times is N2 or more (NO in S25), the microcomputer 51 is controlled to return to the normal operation (S22). When the number of accumulated door opening and closing times is less than N2 times (YES in S25), the microcomputer 51 continues the stop cooling control (S26). Further, in the above, for example, N1 = 3 times, N2 = 10 times, and T2 = 1 hour.

Further, when the cooling of the refrigerating compartment 100, the switching compartment 300, the vegetable compartment 400, or the freezing compartment 500 is stopped, the same is also performed according to the flowchart shown in FIG.

As described above, according to the present embodiment, since the number of door opening and closing of the storage chamber in which the cooling control is stopped is set, the door opening/closing frequency is high, and even if the setting of the cooling control is stopped, the control is returned to the normal operation. Control, so food protection in the containment room can be achieved. Further, other operations and effects of the embodiment are the same as those of the first embodiment. Further, this embodiment can be combined with the second embodiment.

Fourth embodiment

Fig. 8 is a view showing an example of the configuration of the switching chamber 300 of the refrigerating and freezing refrigerator 1 of the present embodiment. As shown in FIG. 8, the storage box 302 separated from the switching chamber door 301 is disposed in the switching chamber 300. The storage box 302 is disposed on the partition 303 via the weight sensor 71. That is, the weight sensor 71 is disposed between the bottom of the storage box 302 and the partition 303, and the weight sensor 71 It is in contact with the storage box 302. Further, the food 81 is housed in the storage box 302. The weight sensor 71 measures the overlap of the storage box 302 including the food 81. Further, the other configuration of the refrigerator-freezer 1 of the present embodiment is the same as that of the first embodiment.

Fig. 9 is a view showing an example of the relationship between the weight measured by the weight sensor 71 and the detected voltage. The output from the weight sensor 71 varies as shown in Fig. 9 in accordance with the weight of the measuring object of the weight sensor 71. In Fig. 9, the weight of the storage box 302 when the food 81 is not loaded is m0, and the detection voltage at this time is V0. Further, m1 is the minimum weight that can be detected when the food 81 is loaded into the storage box 302, and the detection voltage at this time is V1. M2 is the weight when any food 81 has been charged, and the detection voltage at this time is V2. In this manner, the presence or absence of the food 81 in the storage box 302 can be determined from the detected voltage of the weight sensor 71.

The detection voltage of the weight sensor 71 is input to the microcomputer 51 of the control circuit board 6, and the microcomputer 51 detects the weight based on the relationship between the weight and the detection voltage as shown in FIG. 9, thereby detecting the presence or absence of the food in the storage box 302. .

Next, an operation in the case where the refrigerator compartment 1 of the present embodiment stops cooling, for example, the switching chamber 300, will be described with reference to FIG. Fig. 10 is a flow chart showing the operation of this embodiment.

First, the microcomputer 51 determines whether or not the stop cooling setting is made (S31). As a result of the determination, in the case where the cooling setting is not stopped (NO in S31), the microcomputer 51 is controlled to continue the normal operation (S32). Here, since it is assumed that the cooling switching chamber 300 is stopped (YES at S31), the process proceeds to S33, and the microcomputer 51 measures the weight of the switching chamber 300. That is, the microcomputer 51 is based on weight sensing The relationship between the detected voltage of the output of the device 71 (food detecting unit) and the ninth figure detects the weight of the storage box 302.

Next, the microcomputer 51 determines whether or not the detected weight is less than m1 (S34), and if it is less than m1 (YES in S34), the stop cooling control is executed (S35). On the other hand, when it is m1 or more (NO in S34), the microcomputer 51 is controlled to return to normal operation (S32). In other words, even when the microcomputer 51 is set to stop the cooling control, when the food 81 is stored in the switching chamber 300, the setting of the stop cooling control is released, and the cooling control is performed. For example, when the food 81 is not accommodated in the first switching chamber 300, the food storage 81 is newly stored in the switching chamber 300, and the setting of the stop cooling of the switching chamber 300 is released, and the cooling control is performed.

Further, in the case where the cooling of the refrigerating compartment 100, the ice making compartment 200, the vegetable compartment 400, or the freezing compartment 500 is stopped, the same configuration is applied, and the control is performed according to the flowchart shown in FIG.

As described above, according to the present embodiment, in the case where the storage chamber in which the cooling is stopped is erroneously set or the food is stored in the storage chamber where the cooling is still set, the weight of the storage chamber is also measured. After the food in the storage room is detected, it is controlled to return to normal operation, so food protection in the storage room can be achieved.

Further, in the present embodiment, it is also possible to notify the return to the normal operation by, for example, displaying on the operation panel 5, and to notify the food in the storage room as a means for obtaining the same effect. Further, other operations and effects of the embodiment are the same as those of the first embodiment. Further, this embodiment can be combined with the second and third embodiments.

Fifth embodiment

In the fourth embodiment, a weight sensor is used as the food detecting unit for detecting the presence or absence of food, but a distance sensor may be used to detect the presence or absence of food.

Fig. 11 is a view showing an example of a configuration of a switching chamber of the refrigerator-freezer 1 according to the embodiment, and is a view showing a case where there is no food in the storage chamber. Fig. 12 is a view showing an example of the configuration of the switching chamber 300 of the refrigerator-freezer 1 according to the present embodiment, and is a view showing a case where food is stored in the storage room. As shown in FIGS. 11 and 12, in the present embodiment, the distance sensor 72 is provided at the bottom of the back surface of the storage box 302. The distance sensor 72 emits infrared rays, and detects the presence or absence of food by measuring the time until the infrared rays are reflected back. That is, the time until the infrared rays radiated from the distance sensor 72 are reflected back to the distance sensor 72 changes depending on the presence or absence of the food. The distance sensor 72 outputs a detection voltage in response to the measurement time. In addition, in FIGS. 11 and 12, the same components as those in FIG. 8 are denoted by the same reference numerals. Further, the other configuration of the refrigerator-freezer 1 of the present embodiment is the same as that of the first embodiment.

Fig. 13 is a view showing an example of the relationship between the distance measured by the distance sensor 72 and the detected voltage. In Fig. 13, d0 is the distance detected by the sensor 72 from the state in which no food is loaded in the storage box 302 (the distance from the distance sensor 72 to the front side of the storage box 302). Voltage system V0. Further, d1 is the maximum distance that can be detected when the food 81 is loaded into the storage box 302, and the detected voltage is V1 at this time. D2 is a case where the distance from the distance sensor 72 to the food 81 is an arbitrary distance. The detection voltage at this time is V2.

The detection voltage of the distance sensor 72 is input to the microcomputer 51 of the control circuit board 6, and the microcomputer 51 detects the distance based on the relationship between the distance and the detection voltage as shown in FIG. 13, thereby detecting whether or not the food is contained in the storage box 302. .

The operation of this embodiment is the same as that of the fourth embodiment. Specifically, in the flowchart of FIG. 10, in "S33, "weight measurement" is replaced with "distance measurement", and in S34, "Is the weight less than m1?" is replaced with "Is the distance greater than d1?" can.

As described above, according to the present embodiment, the reflection time of the distance sensor 72 is also detected when the storage chamber in which the cooling is stopped is set erroneously or the food is stored in the storage chamber where the cooling is still set. After the food 81 is detected, it is controlled to return to normal operation, so that food protection in the storage room can be achieved. Further, other operations and effects of the embodiment are the same as those of the fourth embodiment.

Sixth embodiment

Fig. 14 is a view showing an example of the configuration of the operation panel 5 of the embodiment. The operation panel 5 has an operation unit (a button or the like) that can perform various settings, and a display unit that can display the operation result and the like. As described in the first embodiment, the operation panel 5 has a function as a stop cooling setting unit. However, in the present embodiment, when the cooling control is stopped or the cooling is stopped, the display unit performs the operation as shown in the display unit. The lighting or flashing shown below is displayed. In other words, the display of the stop cooling setting on the operation panel 5 and the display of the storage room in which the cooling is stopped are set to be turned on or off as shown in Fig. 14, so that it is known which of the settings for stopping the cooling and which one is to be used. Containment room It is stopped to cool.

For example, when the cooling of the ice making chamber 200 is stopped, the display for stopping the cooling ("stop cooling") and the display of the ice making chamber ("ice making") are turned on or blinked. At this time, in order to notify power saving, the "ECO" display may be lit or blinking.

According to the present embodiment, it is possible to easily recognize which of the settings for stopping the cooling and which of the storage chambers are stopped to be cooled. Moreover, by lighting or blinking the ECO display, it is easy to recognize that it is saving power. Further, other configurations, operations, and effects of the present embodiment are the same as those of the first to fifth embodiments.

Seventh embodiment

Fig. 15 is a timing chart showing the operation of the seventh embodiment. Hereinafter, an operation of, for example, stopping the cooling control of the ice making compartment 200 will be described with reference to Fig. 15. Further, the configuration of the refrigerator-freezer 1 of the present embodiment is the same as that of the first embodiment.

As shown in Fig. 15, when the cooling of the ice making compartment 200 is stopped at the time t = t1, the windshield (the windshield 24 for the ice making compartment) is closed in order to stop the cooling of the ice making compartment 200. Thereby, since the cooling capacity of the volume of the ice making chamber 200 can be lowered, the number of revolutions of the fan 2 is lowered from f3 to f1, and the number of revolutions of the compressor 7 is lowered from F3 to F1. Further, since the heat retention heater 43 in the ice making chamber 200 is not heated, it is turned off. The temperature of the ice making chamber 200 at this time is set to θ11.

At the time t=t2, when the temperature of the ice making compartment 200 that has stopped cooling rises to θ 13, the windshield (the windshield 24 for the ice making compartment) is turned on by the food protection control. At this time, the number of revolutions of the fan 2 is raised from f1 to f2, and the number of revolutions of the compressor 7 is raised from F1 to F2, and the ice making chamber 200 is rapidly cooled. At the moment t=t3, when the temperature of the ice making compartment 200 becomes θ 12 or less, the windshield (the windshield 24 for the ice making compartment) is closed, and the rotational speed of the fan 2 is lowered from f2 to f1, and the rotational speed of the compressor 7 is lowered from F2 to F1. Further, the main system of the control controls the circuit board 6 (microcomputer 51). Further, for example, f1 = 800 rpm, f2 = 1000 rpm, f3 = 1200 rpm, F1 = 18 rps, F2 = 30 rps, F3 = 40 rps, θ 11 = -20 ° C, θ 12 = -7 ° C, and θ 13 = 0 °C.

Further, although the ice making chamber 200 has been described above, the same applies to the case where the cooling of the refrigerating compartment 100, the switching compartment 300, the vegetable compartment 400, or the freezing compartment 500 is stopped. When the cooling of the refrigerating compartment 100 is stopped, the heat retention heater 42 is turned off, and when the cooling of the vegetable compartment 400 is stopped, the heat retention heater 41 is turned off.

As described above, according to the present embodiment, since the rotation speed of the fan 2 and the rotation speed of the compressor 7 are lowered in response to the storage chamber in which the cooling is stopped, a larger power saving effect can be obtained.

Further, after the food protection temperature (abnormal temperature) θ 13 is reached, by increasing the number of revolutions of the fan 2 and the number of revolutions of the compressor 7, the food is quickly cooled, so that the food can be more reliably protected.

Further, in the first to seventh embodiments, the case where the cooling control of any one of the storage chambers is stopped is described. However, the cooling control may be stopped for two or more storage chambers. In this case, a greater power saving effect can be obtained.

[Industrial Applicability]

The present invention is useful as a power saving technique for a refrigerated refrigerator.

1‧‧‧Freezer refrigerator

2‧‧‧fan

3‧‧‧ cooler

4‧‧‧ Wind Road

5‧‧‧Operator panel

6‧‧‧Control circuit board

7‧‧‧Compressor

8‧‧‧Return road for cold storage

9‧‧‧ Vegetable room return road

11‧‧‧Refrigerator door switch

12‧‧‧Switching room door switch

13‧‧‧ Vegetable room door switch

14‧‧‧Freezer door switch

15‧‧‧Ice chamber door switch

21‧‧‧Wind block for cold rooms

22‧‧‧Switching room windshield

23‧‧ ‧ vegetable room windshield

24‧‧‧Wind block for ice making room

31‧‧‧Refrigerator thermistor

32‧‧‧Switching Room Thermistor

33‧‧‧ Vegetable Room Thermistor

34‧‧‧Freezer Thermistor

35‧‧‧Ice chamber thermistor

41~43‧‧‧Insulation heater

51, 52‧‧‧Microcomputer

71‧‧‧ Weight sensor

72‧‧‧ Distance sensor

81‧‧‧Food

100‧‧‧Refrigerator

110‧‧‧Sink

200‧‧‧ ice making room

300‧‧‧Switching room

301‧‧‧Switching room door

302‧‧‧Storage box

400‧‧ ‧ vegetable room

500‧‧‧freezer

Fig. 1 is a front view showing an example of a refrigerating and freezing refrigerator according to a first embodiment of the present invention.

Fig. 2 is a cross-sectional view of the freezer-refrigerator of Fig. 1 taken along line A-A.

Fig. 3 is a cross-sectional view of the freezer-refrigerator of Fig. 1 taken along line B-B.

Figure 4 is a control block diagram of a freezer refrigerator.

Fig. 5 is a flow chart showing the operation of the first embodiment.

Fig. 6 is a flow chart showing the operation of the second embodiment.

Fig. 7 is a flow chart showing the operation of the third embodiment.

Fig. 8 is a view showing an example of a configuration of a switching chamber of the refrigerator-freezer according to the fourth embodiment.

Fig. 9 is a view showing an example of the relationship between the weight and the detected voltage.

Fig. 10 is a flow chart showing the operation of the fourth embodiment.

Fig. 11 is a view showing an example of a configuration of a switching chamber of the refrigerator-freezer according to the fifth embodiment.

Fig. 12 is a view showing an example of a configuration of a switching chamber of the refrigerator-freezer according to the fifth embodiment.

Fig. 13 is a diagram showing an example of the relationship between the distance and the detected voltage.

Fig. 14 is a view showing an example of the configuration of the operation panel of the sixth embodiment.

Fig. 15 is a timing chart showing the operation of the seventh embodiment.

Claims (13)

A freezer-refrigerated refrigerator characterized by comprising: a plurality of divided compartments; a cooler for generating cold air for cooling the surrounding air and supplying to the respective containment chambers; and a wind passage for causing cold airflow generated by the cooler The air conditioning unit adjusts the inflow of cold air from the air passage to the storage chambers; the temperature detecting unit detects the temperature of each of the storage chambers; and stops the cooling setting unit. When the cooling setting unit is set to stop the cooling control, the control unit sets a storage chamber for stopping the cooling control by the stop cooling setting unit, and the control unit sets the stop of the cooling control. The air volume adjusting unit stops the inflow of the cold air in the storage chamber, stops the cooling control, and detects that the abnormal temperature of the temperature equal to or higher than the preset first temperature continues for a fixed time or longer. Even in the setting of the stop cooling control, the control of stopping the inflow of the cold air to the storage chamber by the air volume adjusting unit is released, and the cooling control is performed until the temperature is detected. The temperature detected by the measuring unit returns to a second temperature which is preset to a temperature lower than the first temperature. The refrigerator-freezer according to claim 1, wherein at least a part of the plurality of accommodating chambers is provided with a heat insulating heater for increasing the temperature or preventing freezing or condensation caused by the temperature drop. ; The control unit sets the stop of the cooling control to the storage chamber having the heat retention heater, and stops or weakens the energization of the heat retention heater. The refrigerating and refrigerating refrigerator of claim 1 or 2, wherein the door has an opening and closing detecting portion for detecting opening and closing of the door of each of the receiving chambers; the control portion has an output counting door according to an output from the door opening and closing detecting portion The function of opening and closing the number of times; the control unit counts the door opening and closing frequency of the storage chamber in the storage chamber in which the cooling control is set to be stopped, and the opening and closing frequency of the door is preset a fixed number of times or more In the case of the stop cooling control setting, the setting of the stop cooling control is released. The refrigerator-freezer according to claim 1 or 2, wherein at least a part of the plurality of accommodating chambers has a food detecting portion, and the food detecting portion determines whether or not the food is contained in the accommodating chamber; When the cooling control is stopped in the storage room having the food detecting unit, it is determined whether or not the food is stored in the storage room based on the output from the food detecting unit, and the result of the determination is that when the food is stored in the storage room, The setting of the stop cooling control is released and the cooling control is performed. The refrigerator-freezer of claim 3, wherein at least a part of the plurality of accommodating chambers has a food detecting portion, and the food detecting portion determines whether or not the food is contained in the accommodating chamber; the control portion is in the pair The storage room having the food detecting unit sets the stop of the cooling control, and determines whether or not the food is stored in the storage room based on the output from the food detecting unit. As a result of the determination, the food is released when the food is stored in the storage room. Cooling control settings and cooling control. In the case of the refrigerating and refrigerating refrigerator of claim 4, wherein the storage compartment is in a state where the cooling control is stopped, when the food compartment newly stores the food, the control section detects the output from the food detecting section. After the new food is stored in the storage room, the setting of the stop cooling of the storage chamber is released, and the cooling control is performed. In the case of the refrigerating and refrigerating refrigerator of claim 5, wherein the storage compartment is in a state in which the cooling control is stopped, when the food compartment newly stores the food, the control section detects the output from the food detecting section. After the new food is stored in the storage room, the setting of the stop cooling of the storage chamber is released, and the cooling control is performed. In the refrigerating and freezing refrigerator according to the sixth aspect of the invention, the stop cooling setting unit is configured to notify the stop of the cooling when the control unit cancels the setting of the stop cooling of the storage chamber and starts the cooling control. In the refrigerating and freezing refrigerator according to the seventh aspect of the invention, in the stop cooling setting unit, when the control unit cancels the setting of the stop cooling of the storage chamber and starts the cooling control, the setting for notifying the stop of cooling is released. The refrigerator-refrigerated refrigerator according to claim 1, wherein the stop cooling setting unit has an operation unit that can be set to stop cooling and a display unit that can display an operation result thereof; and the stop cooling setting unit is configured to stop cooling. Alternatively, when the setting of the cooling control is stopped, the display unit lights or blinks the display of the stop cooling setting and the display of the storage room in which the cooling is stopped. The refrigerator-freezer according to claim 1, wherein the compressor comprises a refrigeration cycle together with the cooler; and the fan is configured to circulate the cold air generated by the cooler; the control unit is already The cooling control for stopping all or a part of the plurality of storage chambers is set such that the number of revolutions of the compressor or the number of revolutions of the fan is lowered. The freezer-refrigerated refrigerator according to claim 1, wherein the plurality of accommodating chambers are accommodating chambers of a refrigerating temperature belt that maintains a temperature inside the chamber at a temperature higher than 0 ° C, and maintains the temperature inside the chamber at less than 0 ° C. The temperature is in a storage compartment of the freezing temperature zone; and the stop cooling setting section is configured to stop the cooling control of the storage compartment of the freezing temperature zone. In the refrigerating and freezing refrigerator according to the first aspect of the invention, the stop cooling setting unit can simultaneously set the cooling control to the two or more storage chambers.