JPWO2018116419A1 - refrigerator - Google Patents

Abstract

The purpose is to provide a refrigerator that notifies the user when the door is forgotten to close while preventing unnecessary alarm sounds, and detects the open state of the door 5 that opens and closes the opening of the storage room. If the temperature of the storage room is higher than the set temperature and there is no change in the weight of the storage room, it is determined that the door 5 is not closed and the door 5 is closed It is a refrigerator which notifies a user that there is. When a plurality of storage chambers are provided, the set temperature is preferably set to a different temperature in each of the storage chambers.

Description

  BACKGROUND OF THE INVENTION Field of the Invention The present invention relates to a refrigerator capable of notifying that the door of the storage room is closed.

  2. Description of the Related Art Conventionally, there is known a refrigerator which notifies of the failure to close the door of the storage room of the refrigerator by an alarm sound. In such a refrigerator, an unnecessary alarm may sound during storage of a storage item in the storage room or removal of a storage item from the storage room, which may cause the user to feel bothersome is there.

  Patent Document 1, which is an example of the prior art, discloses a refrigerator that can change an alarm to an off setting.

JP, 2011-158234, A

  However, according to the above-mentioned prior art, when the alarm is changed to the off setting, the alarm does not sound even when the door is actually in the closed state. Therefore, there is a problem that it is difficult to prevent the closing of the door.

  The present invention has been made in view of the above, and it is an object of the present invention to obtain a refrigerator that notifies a user when a door is forgotten to be closed while preventing an unnecessary alarm sound.

  In order to solve the problems described above and achieve the object, the refrigerator according to the present invention detects the open state of the door that opens and closes the opening of the storage chamber, and a predetermined time or more elapses, and the temperature in the storage chamber Is above the set temperature, and when there is a change in the weight of the storage chamber, it is determined that the door is in the forget-to-close state, and the user is notified that the door is in the forget-to-close state. I assume.

  ADVANTAGE OF THE INVENTION The refrigerator which concerns on this invention has an effect that it can alert | report to a user, when a door is in the state which closed closing, preventing an unnecessary alarm sound.

The figure which shows the front of the refrigerator concerning an embodiment The figure which shows the II-II cross section in FIG. Diagram showing a control block in the embodiment Control flowchart in the embodiment

  Below, the refrigerator which concerns on embodiment of this invention is demonstrated in detail based on drawing. The present invention is not limited by the embodiment.

Embodiment.
FIG. 1 is a front view of a refrigerator according to the present embodiment. FIG. 2 is a view showing a cross section II-II in FIG. In addition, in FIG. 2, the structure which exists on a II-II cross section, and the structure which does not exist on a II-II cross section, but is distribute | arranged to the same position are divided and represented with the comma. As an example, the switching chamber 2c present on the II-II cross section and the ice making chamber 2b not present on the II-II cross section but arranged at the same position are separated by a comma and shown.

  The refrigerator 1 includes a box 3 provided with a plurality of storage compartments 2 separated from each other. Here, a plurality of storage compartments 2 are a refrigerator compartment 2a capable of storing stored goods, an ice making compartment 2b capable of producing and storing ice, a switching compartment 2c capable of temperature switching, and a freezing compartment capable of freezing and storing stored goods. It is vegetable room 2e which can store 2d and vegetables. An example of the stored goods is food. In addition, the refrigerator 1 is a refrigerator-freezer.

  The refrigerator compartment 2a is provided above the other storage compartments 2. An opening 4a is provided on the front of the refrigerator compartment 2a. The refrigerator 1 includes a pair of double door 5a that can open and close the opening 4a. The refrigerator 1 includes a door switch 6a that can detect the open / close state of the pair of doors 5a. The door switch 6a is turned on or off according to the open / close state of the pair of doors 5a, and outputs a signal according to the open / close state of the pair of doors 5a. As an example, the door switch 6a is turned on when the door 5a is opened to output a door open signal, or the door switch 6a is turned on when the door 5a is closed to output a door open signal.

  Icemaker 2b is provided in the lower stage of cold storage room 2a. An opening 4b is provided on the front of the ice making chamber 2b. The refrigerator 1 includes a drawer-type door 5b capable of opening and closing the opening 4b. The refrigerator 1 includes a door switch 6b capable of detecting the open / close state of the door 5b. The door switch 6b is turned on or off according to the open / close state of the door 5b, and outputs a signal according to the open / close state of the door 5b. As an example, the door switch 6b is turned on when the door 5b is opened to output a door open signal, or the door switch 6b is turned on when the door 5b is closed to output a door open signal.

  The switching chamber 2c is provided at the same height below the cold storage chamber 2a and next to the ice making chamber 2b. An opening 4c is provided on the front of the switching chamber 2c. The refrigerator 1 includes a drawer-type door 5c that can open and close the opening 4c. The refrigerator 1 includes a door switch 6c that can detect the open / close state of the door 5c. The door switch 6c turns on or off according to the open / close state of the door 5c, and outputs a signal according to the open / close state of the door 5c. As an example, the door switch 6c is turned on when the door 5c is opened to output a door open signal, or the door switch 6c is turned on when the door 5c is closed to output a door open signal.

  The freezing room 2d is provided at the lower stage of the ice making room 2b and the switching room 2c. An opening 4d is provided on the front of the freezer compartment 2d. The refrigerator 1 includes a drawer-type door 5d capable of opening and closing the opening 4d. The refrigerator 1 includes a door switch 6d that can detect the open / close state of the door 5d. The door switch 6d turns on or off according to the open / close state of the door 5d, and outputs a signal according to the open / close state of the door 5d. As an example, the door switch 6d is turned on when the door 5d is opened to output a door open signal, or the door switch 6d is turned on when the door 5d is closed to output a door open signal.

  The vegetable compartment 2e is provided at the lower stage of the freezing compartment 2d. An opening 4e is provided on the front of the vegetable compartment 2e. The refrigerator 1 includes a drawer-type door 5e that can open and close the opening 4e. The refrigerator 1 includes a door switch 6e that can detect the open / close state of the door 5e. The door switch 6e is turned on or off according to the open / close state of the door 5e and outputs a signal according to the open / close state of the door 5e. As an example, the door switch 6e is turned on when the door 5e is open to output a door open signal, or the door switch 6e is turned on when the door 5e is closed to output a door open signal.

  In the following description, the doors 5a, 5b, 5c, 5d, 5e will be collectively referred to as the door 5 when the doors 5a, 5b, 5c, 5d, 5e are not distinguished. When the openings 4a, 4b, 4c, 4d and 4e are not distinguished, the openings 4a, 4b, 4c, 4d and 4e are collectively referred to as the opening 4. When the door switches 6a, 6b, 6c, 6d and 6e are not distinguished from one another, the door switches 6a, 6b, 6c, 6d and 6e are collectively referred to as the door switch 6.

  The refrigerator 1 is equipped with the operation panel 7 provided in the door 5a. The operation panel 7 is a user interface for setting the refrigerator 1 in accordance with the operation content of the user.

  The refrigerator 1 is provided with an alarm 10. The alarm 10 generates an alarm sound. The alarm 10 is a notification unit that notifies the user by an alarm sound that the door 5 is in a state of being left closed. The alarm sound also includes voice. The alarm 10 is provided at the top of the front of the refrigerator 1.

  The refrigerator 1 includes a control board 25. The control board 25 is provided on the back side of the upper surface of the refrigerator 1.

  Here, the internal configuration of the refrigerator 1 will be briefly described. In the box 3, an air passage 15 is provided on the back side of the refrigerator 1. The air passage 15 connects the freezer compartment 2d and the refrigerator compartment 2a. In the air passage 15, a cooler 16 for generating cold air and a fan 17 for circulating the cold air are provided. The refrigerator 1 includes a compressor 19 in a machine room 18 provided on the back side of the refrigerator 1. The compressor 19 and the cooler 16 are a part of components of the refrigeration cycle, and the illustration of the other components of the refrigeration cycle is omitted here.

  When the compressor 19 is driven, the refrigerant circulates in the refrigeration cycle. The cooler 16 exchanges heat between the ambient air and the refrigerant, and the air is cooled to generate cold air. This cold air passes through the air passage 15 by the rotation of the fan 17, and further passes through the cold storage room 2a, the return path 20, the ice making room 2b, the switching room 2c, the freezing room 2d and the vegetable room 2e. It circulates. The flow rate of the cold air to the storage chamber 2 is adjusted by the dampers 21 and 21a. The cooling function of the refrigerator 1 is adjusted by the number of rotations of the compressor 19 and the number of rotations of the fan 17.

  Moreover, the refrigerator 1 is equipped with thermistors 8a, 8b, 8c, 8d and 8e. In the refrigerator compartment 2a, a thermistor 8a which detects the temperature in the refrigerator compartment 2a and outputs temperature information is provided. In the ice making chamber 2b, a thermistor 8b is provided which detects the temperature in the ice making chamber 2b and outputs temperature information. In the switching chamber 2c, a thermistor 8c that detects the temperature in the switching chamber 2c and outputs temperature information is provided. In the freezer compartment 2d, a thermistor 8d for detecting the temperature in the freezer compartment 2d and outputting temperature information is provided. In the vegetable compartment 2e, the thermistor 8e which detects the temperature in the vegetable compartment 2e and outputs temperature information is provided.

  Moreover, the refrigerator 1 is equipped with weight sensor 9a1, 9a2, 9b, 9c, 9d, 9e. In the refrigerator compartment 2a, weight sensors 9a1 and 9a2 are provided which detect the weight of the storage items in the refrigerator compartment 2a and output weight information. The weight sensor 9a1 is provided at the lower stage in the refrigerator compartment 2a, and the weight sensor 9a2 is provided at the upper stage in the refrigerator compartment 2a. In the ice making chamber 2b, there is provided a weight sensor 9b which detects the weight of the stored item in the ice making chamber 2b and outputs weight information. In the switching chamber 2c, a weight sensor 9c is provided which detects the weight of the stored item in the switching chamber 2c and outputs weight information. In the freezer compartment 2d, there is provided a weight sensor 9d which detects the weight of the stored goods in the freezer compartment 2d and outputs weight information. In the vegetable compartment 2e, there is provided a weight sensor 9e that detects the weight of the storage item in the vegetable compartment 2e and outputs weight information.

  The refrigerator 1 detects the weight of the stored items in each room while detecting the temperature in each room by the thermistors 8a, 8b, 8c, 8d, 8e and the weight sensors 9a1, 9a2, 9b, 9c, 9d, 9e. Can.

  Further, in the following description, the thermistors 8a, 8b, 8c, 8d and 8e are collectively referred to as the thermistor 8 when the thermistors 8a, 8b, 8c, 8d and 8e are not distinguished. When the weight sensors 9a1, 9a2, 9b, 9c, 9d, 9e are not distinguished from one another, the weight sensors 9a1, 9a2, 9b, 9c, 9d, 9e are collectively referred to as a weight sensor 9.

  FIG. 3 is a diagram showing a control block in the present embodiment. The control substrate 25 is a substrate provided with a control circuit, and includes a microcomputer 26 and a clock 27. The microcomputer 26 is a control unit that controls the refrigerator 1 and includes a processor 26a and a storage circuit 26b. The processor 26a executes a program stored in the storage circuit 26b, and executes the control method described in the program. One example of the processor 26a is a CPU (Central Processing Unit), and one example of the storage circuit 26b is a semiconductor memory. The clock 27 outputs time information to the microcomputer 26.

  The door switch 6a outputs an open / close state signal indicating the open / close state of the door 5a of the cold storage room 2a to the microcomputer 26. The door switch 6b outputs an open / close state signal indicating the open / close state of the door 5b of the ice making chamber 2b to the microcomputer 26. The door switch 6c outputs an open / close state signal indicating the open / close state of the door 5c of the switching chamber 2c to the microcomputer 26. The door switch 6d outputs an open / close state signal indicating the open / close state of the door 5d of the freezer compartment 2d to the microcomputer 26. The door switch 6e outputs an open / close state signal indicating the open / close state of the door 5e of the vegetable compartment 2e to the microcomputer 26. The open / close state signal is a door open signal or a door close signal.

  The thermistor 8a outputs the temperature information in the refrigerator compartment 2a to the microcomputer 26. The thermistor 8 b outputs the temperature information in the ice making chamber 2 b to the microcomputer 26. The thermistor 8 c outputs the temperature information in the switching chamber 2 c to the microcomputer 26. The thermistor 8 d outputs the temperature information in the freezing room 2 d to the microcomputer 26. The thermistor 8e outputs the temperature information in the vegetable compartment 2e to the microcomputer 26.

  The weight sensor 9a1 outputs to the microcomputer 26 weight information of the storage item at the lower stage of the cold storage room 2a. The weight sensor 9a2 outputs, to the microcomputer 26, weight information of the stored item in the upper stage of the cold storage room 2a. The weight sensor 9 b outputs the weight information of the storage item of the ice making chamber 2 b to the microcomputer 26. The weight sensor 9c outputs the weight information of the storage item of the switching chamber 2c to the microcomputer 26. The weight sensor 9 d outputs the weight information of the storage item of the freezer compartment 2 d to the microcomputer 26. The weight sensor 9e outputs the weight information of the storage item of the vegetable compartment 2e to the microcomputer 26.

  The microcomputer 26 outputs the outputs of the door switches 6a, 6b, 6c, 6d, 6e, the outputs of the thermistors 8a, 8b, 8c, 8d, 8e, the weight sensors 9a1, 9a2, 9b, 9c, 9d, 9e and the clock 27. Control the alarm 10 based on That is, the microcomputer 26 outputs an alarm signal to the alarm 10 when it is determined that the door 5 of the storage room 2 is in a state of forgetting to close, and does not output an alarm signal to the alarm 10 otherwise. When the alarm signal is input, the alarm 10 sounds an alarm.

  FIG. 4 is a control flowchart in the present embodiment. When the user operates the operation panel 7 to set an alarm set temperature which is a temperature at which the alarm 10 sounds, processing is started. The alarm setting temperature may be set to one temperature for the inside of the refrigerator 1, but the refrigerator room 2a, the ice making room 2b, the switching room 2c, the freezing room 2d and the vegetable room 2e have appropriate temperatures respectively. Because of the difference, it is preferable to set an alarm set temperature for each room.

  First, when the process is started, the microcomputer 26 detects the output of the door switch 6 (S1). Next, the microcomputer 26 determines from the output of the door switch 6 whether the door 5 of the storage room 2 is in the open state (S2). If the door 5 is not in the open state (S2: No), it is not necessary to sound the alarm 10, so the process returns to S1. When the door 5 is in the open state (S2: Yes), the microcomputer 26 detects the output of the weight sensor 9 of the storage room 2, that is, measures the first weight information M1 (S3), and measures time Start (S4).

  Then, the microcomputer 26 detects the output of the door switch 6 again (S5), and determines from the output of the door switch 6 whether the door 5 of the storage room 2 is in the closed state (S6). When the door 5 is in the closed state (S6: Yes), it is not necessary to sound the alarm 10, so the process returns to S1. If the door 5 is not in the closed state (S6: No), whether or not the time from the start of clocking in S4 is equal to or longer than the alarm setting time, that is, whether the open state of the door 5 continued for the setting time or longer It is determined (S7). Here, the alarm setting time is a predetermined fixed time. If the time after the start of clocking is not longer than the alarm setting time (S7: No), it is not necessary to sound the alarm 10 at this time, so the process returns to S5. If the time from the start of clocking is equal to or longer than the alarm setting time (S7: Yes), the microcomputer 26 detects the output of the thermistor 8 in the storage room 2 (S8) and determines whether the temperature is above the alarm setting temperature. It is determined (S9). If the temperature information that is the output of the thermistor 8 is not higher than the alarm set temperature (S9: No), the temperature in the storage room 2 can be maintained, and the alarm 10 does not need to be sounded, so the process returns to S1. When the temperature information which is the output of the thermistor 8 is equal to or higher than the alarm set temperature (S9: Yes), the microcomputer 26 detects the output of the weight sensor 9 of the storage room 2, that is, the second weight information M2 Measure (S10).

  Next, the microcomputer 26 determines whether the first weight information M1 and the second weight information M2 are equal (S11). When the first weight information M1 and the second weight information M2 are different (S11: No), the microcomputer 26 is in the process of storing the stored goods in the storage room 2 or taking out the stored goods from the storage room 2 It is determined to be medium, and the process returns to S1 without ringing the alarm 10. When the first weight information M1 and the second weight information M2 are equal (S11: Yes), the microcomputer 26 determines that the door 5 is in the state of forgetting to close, and outputs a signal to the alarm 10 Alarm 10 is sounded (S12), and the process is ended.

  The microcomputer 26 monitors the outputs of the door switches 6a, 6b, 6c, 6d and 6e, and executes the control processing as described above on the doors 5a, 5b, 5c, 5d and 5e.

  According to the present embodiment, the alarm sound of the alarm 10 does not sound during storage of the stored goods in the storage room 2 or removal of the stored goods from the storage room 2, and the door 5 is in a state of being closed. The alarm 10 sounds.

  That is, according to the present embodiment, the alarm 10 does not sound during storage of a storage item in the refrigerator 1 or removal of a storage item from the refrigerator 1, and the user does not need an unnecessary alarm while using the refrigerator 1 I do not feel bothersome to the sound. In addition, even if it takes time to store stored items in storage room 2 or take out storage items from storage room 2, even in cold regions or winter months, the temperature in storage room 2 can be maintained. There are many. In the present embodiment, it is premised that it is judged whether the temperature in the storage room 2 can be maintained, so an unnecessary alarm sounds when the temperature in the storage room 2 can be maintained. Can be prevented.

  The arrangement, the number, and the type of the plurality of storage chambers 2 are not limited to the illustrated example.

  In the present embodiment, the alarm sound notifies that the door 5 is in the forgot-closed state, but the present invention is not limited to this, and the alarm display indicates that the door 5 is in the forgot-closed state You may alert | report to a user. This alarm display may be displayed on the operation panel as an example.

  In addition, although the operation panel is provided in the user interface in the refrigerator of this Embodiment, this invention is not limited to this, It may replace with the operation panel and the operation button may be provided. Alternatively, instead of the operation panel or together with the operation panel, a terminal capable of wirelessly communicating with the refrigerator may be used for the user interface. Such an interface may be collectively called an operation unit.

  Further, although the pair of doors 5a is a double door type, and the doors 5b to 5e are drawn out type, the present invention is not limited to this opening and closing method.

  The configuration shown in the above embodiment shows an example of the contents of the present invention, and can be combined with another known technique, and one of the configurations is possible within the scope of the present invention. Parts can be omitted or changed.

  Reference Signs List 1 refrigerator, 2 storage room, 2a cold storage room, 2b ice making room, 2c switching room, 2d freezing room, 2e vegetable room, 3 boxes, 4, 4a, 4b, 4c, 4d, 4e opening, 5, 5a, 5b , 5c, 5d, 5e door, 6, 6a, 6b, 6c, 6e, 6e door switch, 7 operation panel, 8, 8a, 8b, 8c, 8d, 8e Thermistor, 9, 9a1, 9a2, 9b, 9c, 9d , 9e weight sensor, 10 alarm, 15 air path, 16 cooler, 17 fan, 18 machine room, 19 compressor, 20 return path, 21, 21a damper, 25 control board, 26 microcomputer, 26a processor, 26b memory circuit , 27 clock.

Claims (3)

  A certain time or more elapses after detecting the open state of the door for opening and closing the opening of the storage chamber, and the temperature of the storage chamber is equal to or higher than the set temperature, and the weight of the storage chamber fluctuates. Is a refrigerator for notifying the user that the door is in a state of forgetting to close. The storage room,
A door for opening and closing the opening of the storage room;
A door switch that detects the opening and closing of the door and outputs an open / close state signal;
A thermistor that detects the temperature in the storage chamber and outputs temperature information;
A weight sensor that measures the weight of the storage item in the storage chamber and outputs weight information;
A control unit to which the open / close state signal, the temperature information, and the weight information are input;
And a notification unit whose operation is controlled by the control unit.
The control unit
After detecting that the door is open from the open / close state signal, a set time or more elapses,
From the temperature information, the temperature in the storage chamber is equal to or higher than the set temperature,
If there is no change in the weight of the stored item after the passage of the set time or more after detecting that the door is in the open state from the weight information, it is determined that the door is in the forget-to-close state ,
The notification unit is a refrigerator that notifies the user that the door is in a state of forgetting to close. A plurality of the storage rooms are provided,
The refrigerator according to claim 1 or claim 2, wherein the set temperature is different for each storage room.

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