JP4445523B2 - refrigerator - Google Patents

Description

  The present invention relates to a refrigerator provided with a door opening device for opening a door of a storage room held in a closed state by a magnet gasket.

  In recent years, refrigerators have been remarkably increased in size, and accordingly, doors for opening and closing storage rooms such as refrigerator compartments and freezer compartments have also been enlarged. The door of the refrigerator is normally configured to be held in a closed state by an attractive force of a magnet gasket provided in the peripheral part of the door. Therefore, when the door is enlarged, the total extension of the magnet gasket becomes longer, and the force required for the opening operation increases accordingly. Therefore, in order to reduce the force required for the door opening operation, an electric assist type door opening device that opens the door using an electric drive source such as an electromagnetic solenoid can be considered (for example, Patent Document 1). It has been put into practical use.

Although not directly related to the present invention, Patent Document 2 provides a water supply valve using a solenoid as a drive source in a water supply path for supplying water from a water storage tank to an ice tray in an automatic ice making device of a refrigerator, It is disclosed that the solenoid is always used as a heater for preventing freezing of the water supply channel by energizing the solenoid with a polarity opposite to that when the water supply valve is opened.
Japanese Patent Laid-Open No. 2001-280827 JP 2006-275348 A

  Although it is good when the door opening device can be arranged outside the warehouse, depending on the position of the door, it may be necessary to arrange it inside the warehouse. However, when the door opening device is arranged in the cabinet, the moisture of the outside air that has entered the cabinet at the time of opening the door opens to the door opening device that is exposed to the cold inside the cabinet and freezes, making the opening operation impossible. There is a fear.

  This invention is made | formed in view of said situation, The objective is to provide the refrigerator which can prevent freezing of an opening apparatus.

The present invention, in order to prevent freezing of the arranged door opening device in the freezer compartment, the provision of the low-voltage application means for energizing at a lower voltage than during door opening operation the electric drive source of the door opening device It is characterized by.

  Since the electric drive source is energized at a low voltage, the opening device is prevented from freezing due to the heat generated by the electric drive source.

Hereinafter, the present invention will be specifically described with reference to embodiments.
(First embodiment)
1 to 5 show a first embodiment of the present invention. As shown in FIG. 3 and FIG. 4, the refrigerator of the present embodiment includes a refrigerator body 1, a refrigerator room 2 located in the upper part, a freezer room 3 located in the lower part, the refrigerator room 2 and the freezer room 3. The ice making chamber 4 and the small freezing chamber 5 located between the left and right are provided. In the present embodiment, the vegetable compartment is constituted by a vegetable case (not shown) arranged in the refrigerator compartment 2 so as to be drawable.

  The refrigerator body 1 is configured by filling a heat insulating material 8 between a steel plate outer box 6 and a plastic inner box 7, and the inside of the inner box 7 is the storage chambers 2 to 5. And in the refrigerator main body 1, the doors 9-12 which open and close the front opening part of each storage chambers 2-5 are provided. Among these doors 9 to 12, the door 9 of the refrigerator compartment 2 is a double door type, and the doors 10 to 12 of the freezer compartment 3, the ice making chamber 4 and the small freezer compartment 5 are all of a drawer type.

  The double door 9 of the refrigerator compartment 2 is rotatably supported by a hinge (not shown), and the drawer type doors 10 to 12 of the freezer compartment 3, the ice making compartment 4 and the small freezer compartment 5 are forward and backward by a rail (not shown). Is supported so as to be movable. A U-shaped holding frame 13 is fixed to the back surface of the drawer type doors 10 to 12, and a container 14 for storing food is detachably held in the holding frame 13. And these containers 14 are pulled out from a storage room with the drawer of the doors 10-12.

  Since the freezer room 3, the ice making room 4, and the small freezer room 5 are in the same temperature zone, they are in communication with each other. In the back of these freezer compartment 3, ice making compartment 4, and small freezer compartment 5, front and rear double covers 15a and 15b are provided. The rear cover 15b forms a cooler chamber 16 with the back wall of the refrigerator main body 1. Inside the cooler chamber 16, a cooler 17 and a fan 18 for circulating cold air are provided. It has been. When the fan 18 rotates, the cold air cooled by the cooler 17 is supplied to the freezing room 3, the ice making room 4 and the small freezing room 5 from a plurality of outlets 19 formed in the front cover 15a. The air after cooling the chambers 3 to 5 circulates such that the air is returned to the cooler chamber 16 again from the suction port 20 formed in the cover 15 b and cooled by the cooler 17. In addition, the refrigerator compartment 2 is cooled by another cooler.

  When the circulating air is cooled by the cooler 17 as described above, moisture contained in the air adheres to the cooler 17 as frost. Since this frost lowers the cooling capacity of the cooler 17, a defrost heater 21 is provided below the cooler 17 and the frost is melted by the heat generated by the defrost heater 21 (defrost). The water (defrosted water) generated by the defrosting is discharged from the drain outlet 22 at the bottom of the cooler chamber 16 to an external evaporating dish (not shown).

  Now, a magnet gasket 23 is attached to the back side peripheral part of each door 9-12, and when each door 9-12 is in a closed state, the magnet gasket 23 is adsorbed to the refrigerator main body 1, and its adsorbing force. Therefore, each door 9-12 is comprised so that it may be hold | maintained in a closed state. Among these doors 9 to 12, the door 9 of the refrigerator compartment 2 and the door 10 of the freezer compartment 3 are relatively large and the total extension of the magnet gasket 23 is also long, so that the adsorbing force is large and the door is opened. A large amount of force is required for operation.

Therefore, an opening device 24 for providing opening assistance to the door 9 of the refrigerator compartment 2 and the door 10 of the freezer compartment 3 is provided on the outer upper surface of the refrigerator main body 1 and inside the refrigerator. Since these door opening devices 24 have the same configuration except for the attachment positions, the door opening device 24 for the door 10 of the freezer compartment 3 that is directly related to the present invention will be described below.
That is, since the freezer compartment 3, the ice making compartment 4, and the small freezer compartment 5 are in the same temperature zone, they are in communication with each other. However, the front opening of the refrigerator main body 1 is provided with a front horizontal frame 25 a that divides the freezing room 3 from the ice making room 4 and the small freezing room 5, and between the ice making room 4 and the small freezing room 5. A front vertical frame 25b is provided to separate the two. Accordingly, the rear side of the front horizontal frame 25a is a space that cannot contribute to food storage, and the space is hung between the front horizontal frame 25a and the front cover 15a at the center in the left-right direction. A mounting member 26 is provided. The door opening device 24 is attached to the lower part of the attachment member 26 that is narrow and long in the front-rear direction. Accordingly, the door opening device 24 is arranged using this dead space.

The door opening device 24 uses a solenoid 29 including a cylindrical coil 27 fixed to an attachment frame 26 and a movable iron core 28 movably provided in the coil 27 as an electric drive source. The movable iron core 28 is urged rearward by the compression spring 30 and is always in a retracted position protruding rearward from the coil 27. A push rod 31 that is eccentric downward is connected to the front end portion of the movable iron core 28, and the push rod 31 passes below the front horizontal frame 25 a and is close to the upper part of the back surface of the door 10 of the freezer compartment 3. ing.
When the coil 27 is energized, the movable iron core 28 moves forward by the magnetic attractive force of the coil 27 and pushes the door 10 of the freezer compartment 3 forward by the push rod 31. Then, the door 10 is pushed forward in the opening direction against the attracting force of the magnet gasket 23.

  On the other hand, a movable handle 10 a is attached to the door 10. In addition, the door 10 is provided with an opening switch 32 (see FIG. 5) made up of, for example, a normally closed micro switch that is turned on when the movable handle 10a is pulled. Moreover, the door switch 33 (refer FIG. 5) for detecting the opening / closing state of the door 10 is provided in the refrigerator main body 1 side. The door switch 33 is constituted by a normally open type micro switch that outputs an off signal when the door 10 is in the closed position, for example, and outputs an on signal in other cases.

  FIG. 5 is a block diagram showing an electrical configuration related to the control of the door opening device 24. In FIG. 5, the control device 34 is mainly composed of, for example, a microcomputer. The control device 34 includes a compressor 35 for a refrigeration cycle, a fan motor 36 for driving the fan 18 for circulating cold air, and the removal. A frost heater 21, a cooler temperature sensor 37 that detects the temperature of the cooler 17, the opening switch 32, the door switch 33, a PWM forming circuit 38, and a timer circuit 39 are connected.

  The PWM forming circuit 38 controls disconnection of the coil 27 of the door opening device 24 via a drive circuit 40 mainly composed of switching elements. When the PWM forming circuit 38 receives a duty signal from the control device 34, the PWM forming circuit 38 controls to cut off the coil 27 with an on-duty according to the duty signal. In this embodiment, the control device 34 outputs a duty signal of 0.5 or 1 to the PWM forming circuit 38.

Then, in the case of a duty signal of 1, the PWM forming circuit 38 applies a normal drive voltage to the coil 27, whereby the movable iron core 28 moves forward by the magnetic attraction force of the coil 27. When the duty signal is 0.5, the PWM forming circuit 38 applies a voltage that is half the normal drive voltage to the coil 27. At this time, the magnetic attraction force of the coil 27 is weak and the movable iron core 28 does not move forward, but the coil 27 generates Joule heat and warms the door opening device 24. Therefore, the PWM forming circuit 38 functions as a low voltage applying unit that applies a low voltage to the coil 27 of the solenoid 29 that is an electric drive source.
The timer circuit 39 has a plurality of timing units and an integrating timing unit. Among these, the integrating timer unit integrates the operation time of the compressor 35 by the control device 34. In addition, each timer unit is configured to start timer counting in response to a count start command from the control device 34.

  Next, the operation of the above configuration will be described. First, the compressor 35 is operated based on the temperature of the freezer compartment 3. That is, when the inside of the freezer compartment 3 reaches a predetermined on temperature or higher, this is detected by a freezer temperature sensor (not shown). Then, the control device 34 activates the compressor 35 and activates the fan motor 36. Thereby, the cold air cooled by the cooler 17 is supplied to the freezer compartment 3, the ice making chamber 4, and the small freezer compartment 5. When the freezer compartment 3 falls below a predetermined off temperature by this cold air supply, this is detected by a freezer compartment temperature sensor (not shown), and the control device 34 stops the compressor 35 and the fan motor 36.

  When the integrated operation time of the compressor 35 by the timer circuit 39 reaches a predetermined time, the control device 34 performs a defrosting operation in which the defrosting heater 21 is energized to melt the frost attached to the cooler 17. When the frost adhering to the cooler 17 is eliminated by this defrosting operation, the temperature of the cooler 17 becomes equal to or higher than a predetermined plus temperature. Therefore, when the cooler temperature sensor 37 detects a predetermined plus temperature or higher, the control device 34. Terminates the defrosting operation by turning off the defrosting heater 21.

  On the other hand, when the handle 10a is put and pulled to open the door 10 of the freezer compartment 3, the handle 10a turns on the door opening switch 32. Then, since the control device 34 outputs a duty signal having an on-duty of 1 to the PWM forming circuit 38, the coil 27 of the door opening device 24 is energized with a normal driving voltage. At this time, the control device 34 is configured to energize the coil 27 only for a predetermined time, for example, for counting for 1 to 2 seconds by operating the timer unit of the timer circuit 39.

  When the coil 27 is energized, the movable iron core 28 is attracted by the coil 27 and moves forward, and pushes the door 10 forward via the push rod 31. Then, the door 10 moves forward against the magnetic attractive force of the magnet gasket 23 and pulls the magnet gasket 23 away from the refrigerator body 1. For this reason, after that, the door 10 can be pulled out to the fully open position only by lightly pulling the handle 10a. The opening of the door 10 is detected by the door switch 33. When the opening of the door 10 is detected by the door switch 33, the control device 34 cuts off the power to the cold air circulation fan motor 36 so that the cold air does not escape from the front surface.

  The coil 27 of the door opening device 24 is energized at a low voltage at the timing shown in the flowchart of FIG. 2 except when the door 10 is opened. The coil 27 generates Joule heat by this low-voltage energization, warms the door opening device 24 and prevents the door opening device 24 from being frozen by the cold air in the freezer compartment 3. Hereinafter, the operation in which the coil 27 is energized at a low voltage is referred to as an anti-freezing operation.

  When the execution of the flowchart of the freeze prevention operation of FIG. 2 is started, first, the control device 34 determines whether or not a predetermined time or more has elapsed since the end of the previous freeze prevention operation (step S1). Since the inside of the freezer compartment 3 in which the door opening device 24 is installed is at a negative temperature, the door opening device 24 is also at a low temperature and easily forms frost when a predetermined time or more has elapsed since the end of the previous freeze prevention operation. . For this reason, when a predetermined time or more has elapsed from the previous freeze prevention operation (“YES” in step S1), the control device 34 energizes the coil 27 of the door opening device 24 with a low voltage and starts the freeze prevention operation. (Step S6).

  Even if the predetermined time or more has not elapsed since the end of the previous freeze prevention operation (“NO” in step S1), the cooling operation has started, that is, when the compressor 35 is energized or before the compressor 35 has been energized for a predetermined time. When it is, the control device 34 starts the anti-freezing operation (“YES” in step S2, step S6). In the cooling operation start state, the cooler 17 has not yet cooled down and is in a state where frost is hardly formed. At this time, frost formation tends to occur on the door opening device 24 that is cooled by the cold air in the freezer compartment 3. For this reason, starting the freeze prevention operation when in the cooling operation start state is effective in preventing the door opening device 24 from freezing.

  Even if not in the cooling start state, when the defrosting is in progress and a predetermined time or more has elapsed since the start of the defrosting, the control device 34 starts the anti-freezing operation (“NO” in step S2; step "YES" in S3, "YES" in step S4, step S6). When a predetermined time or more elapses from the start of defrosting, the frost adhering to the cooler 17 is melted and becomes a high humidity state, so that the frost easily adheres to the door opening device 24. For this reason, anti-freezing operation is started when a predetermined time or more has elapsed from the start of defrosting, and frost formation of the door opening device 24 is prevented.

  When the cooler temperature sensor 37 detects a predetermined temperature or higher even during the defrosting and before the predetermined time has elapsed since the start of the defrosting (“YES” in step S3, “NO” in step S4), the control device 34 Starts anti-freezing operation ("YES" in step S5, step S6). When the frosting amount of the cooler 17 is small, the frost is melted even after a predetermined time has elapsed since the start of defrosting, and the humidity in the freezer compartment 3 may increase due to evaporation of the defrosted water. Since the melting of frost is detected by the temperature rise of the cooler temperature sensor 37, the freeze prevention operation is started when the cooler temperature sensor 37 detects a predetermined temperature or higher.

  The anti-freezing operation is started as described above, and when this anti-freezing operation is performed for a predetermined time, the control device 34 stops the anti-freezing operation ("YES" in step S7, step S8). When the freeze prevention operation is continued for a predetermined time, the door opening device 24 is warmed by the heat generated by the coil 27. For this reason, continuing to energize the coil 27 further results in useless energization, so that the coil 27 is disconnected when the freeze prevention operation is continued for a predetermined time.

  Thus, according to the present embodiment, the coil 27 of the door opening device 24 is energized at a low voltage to generate heat at a predetermined timing, thereby warming the door opening device 24 and preventing it from freezing. It is possible to effectively prevent a problem that the device 24 malfunctions due to freezing.

(Second Embodiment)
FIG. 6 shows a second embodiment of the present invention. In the second embodiment, the start timing of the freeze prevention operation after defrosting is determined. That is, when a predetermined time or more has elapsed since the previous stop of the freeze prevention operation (“YES” in step A1), and when in the cooling operation start state (“YES” in step A2), the same as in the first embodiment described above. Start anti-freezing operation.

  Further, in the present embodiment, defrosting is performed even when the cooling operation is not started (“NO” in step A2) for less than a predetermined time (“NO” in step A1) since the previous stop of the freeze prevention operation (“NO” in step A2). When the fan 18 for circulating cold air is rotating later, the control device 34 starts the anti-freezing operation (“YES” in step A3, “NO” in step S4, step A6). When the defrosting is completed, the humidity in the cooler chamber 16 is increased by the evaporation of the defrosted water. When the fan 18 rotates due to the start of the cooling operation or the like, air containing moisture in the cooler chamber 16 is sent into the freezer compartment 3 and frost formation is likely to occur in the door opening device 24.

  For this reason, starting the freeze prevention operation after the completion of the defrosting is effective for preventing the door opening device 24 from freezing, particularly when the freeze prevention operation is started by the rotation of the fan 18 as in the present embodiment. Since the coil 27 is energized only when air containing moisture is actually sent into the freezer compartment 3, the anti-freezing operation is started when the door opening device 24 may actually freeze. There is no wasteful energization.

(Third embodiment)
FIG. 7 shows a third embodiment of the present invention. The third embodiment is different from the first embodiment in that the anti-freezing operation is started according to the opening of the door 10. That is, in this embodiment, when the door switch 33 detects opening / closing of the door 10, the control device 34 counts up a door opening counter (door opening number counting means) (not shown) by one each time the door switch 33 is opened. Further, the control device 34 causes the timer circuit 39 to count the time that the door 10 has been opened by the door switch 33 (door opening time counting means), and accumulate and store the opening time (door opening time integrating means). ) Is configured as follows.

  Then, as shown in FIG. 7, when the door 10 is opened and the count number of the door opening counter reaches a predetermined number or more, the control device 34 starts the anti-freezing operation (“YES” in step B3, and in step B4). "YES", step B7). That is, when the door 10 is opened, outside air enters the freezer compartment 3 each time. Since the outside air contains moisture, the moisture touches the door opening device 24 to form dew and freeze or adhere as frost. For this reason, starting the anti-freezing operation when the number of times of opening the door is equal to or greater than the predetermined number is effective in preventing the door opening device 24 from freezing.

Further, even if the door 10 has not been opened a predetermined number of times, if the total time during which the door 10 is in the open state (door opening integrated time) is equal to or longer than the predetermined time, the control device 34 starts the anti-freezing operation. ("NO" in step B4, "YES" in step B5, step B7).
Furthermore, even if the door opening integration time has not reached the predetermined time, if the continuous opening time during which the door 10 remains open is equal to or longer than the predetermined time, the control device 34 starts the anti-freezing operation. ("NO" in step B5, "YES" in step B6, step B7).

  As described above, when the total opening time of the door 10 exceeds a predetermined time, or when the door 10 is opened for a predetermined time or more even if the door 10 is opened once, the door opening device 24 is frozen. Therefore, entering the freeze prevention operation at such timing is effective in preventing the freeze.

(Fourth embodiment)
FIG. 8 shows a fourth embodiment of the present invention. This embodiment differs from the first embodiment described above in that a temperature sensor for the opening device that detects the temperature of the opening device 24 and a humidity sensor that detects the humidity in the freezer compartment 3 or the cooler chamber 16 are provided. The end timing of the freeze prevention operation is determined by the detected temperature of the temperature sensor for the door opening device and the detected humidity of the humidity sensor.

  That is, after the freeze prevention operation is started, the freeze prevention operation is ended when a predetermined time or more has elapsed (“YES” in Step C7, Step C11). When the temperature detected by the temperature sensor is equal to or higher than the predetermined temperature, there is no fear of the door opening device 24 being frozen, so the control device 34 terminates the freeze prevention operation (“NO” in step C7, and in step C8). "YES", step C11).

Further, even if the detection temperature of the temperature sensor for the door opening device is lower than the predetermined temperature, if the humidity detected by the humidity sensor is lower than the predetermined humidity, the humidity in the freezer compartment 3 is low and the door opening device 24 is frozen. Therefore, the control device 34 ends the freeze prevention operation (“NO” in step C8, “YES” in step C9, step C11).
Further, when the door opening switch 32 detects the pulling operation of the handle 10a of the door 10, the coil 27 of the door opening device 24 is energized with a normal driving voltage and generates heat, and at this time, the freeze prevention operation is terminated ( "NO" in step C9, "YES" in step C10, step C11).

(Fifth embodiment)
FIG. 9 shows a fifth embodiment of the present invention. This embodiment differs from the first embodiment described above in that an electrically erasable EEPROM 41 is connected to the control device 34 as rewritable memory means. In the EEPROM 41, in the first embodiment, the predetermined time in step S1, the predetermined time in step S4, the predetermined temperature in step S5, the predetermined time in step S7, and in the second embodiment, the step A predetermined temperature of A5, a predetermined temperature of step A7, and in the third embodiment, a predetermined time when the cooling start state is set within a predetermined time from the start of operation of the compressor 35 of step B2, and a predetermined number of times of step B4 The predetermined time in step B5, the predetermined time in step B6, and in the fourth embodiment, numerical values such as the predetermined temperature in step C8 and the predetermined humidity in step C9 are stored, and these stored numerical values can be changed. It is like that. Thereby, it becomes possible to perform the freeze prevention operation without excess or deficiency by changing the above numerical values according to the actual situation.

(Other embodiments)
The present invention is not limited to the embodiment described above and shown in the drawings, and can be expanded or changed as follows.
The door opening device 24 for performing the freeze prevention operation is not limited to the one provided in the freezer compartment 3, and the freeze prevention operation of the present invention is applied to the door opening device disposed in the interior portion where there is a risk of freezing. can do.
The means for applying a low voltage to the door opening device 24 is not limited to that using the PWM method. A commercial AC power source may be stepped down by a transformer and applied to the coil 27. Moreover, the structure which makes a commercial alternating current electricity low voltage by phase control, and applies it to the coil 27 may be sufficient.
The electric drive source of the door opening device 24 is not limited to the solenoid 29. For example, it is good also as a structure which uses a motor as an electric drive source, converts the rotation into a linear motion by a rack and a pinion, for example, and opens the door 10. The freeze prevention operation in this case is performed by applying a low voltage to the motor coil.

The 1st Embodiment of the present invention is shown, and a vertical side view of a door opening device peripheral part The flowchart which shows the control contents about the freeze prevention operation of the door opening device Side view of the refrigerator shown partially broken Front view of refrigerator Block diagram showing electrical configuration FIG. 2 equivalent view showing the second embodiment of the present invention FIG. 2 equivalent view showing the third embodiment of the present invention FIG. 2 equivalent view showing a fourth embodiment of the present invention FIG. 5 equivalent view showing the fifth embodiment of the present invention

Explanation of symbols

  In the drawings, 1 is a refrigerator body, 3 is a freezer compartment (storage room), 10 is a door, 17 is a cooler, 18 is a fan, 21 is a defrost heater, 23 is a magnet gasket, 25 is a door opening device, and 27 is a coil. , 28 is a movable iron core, 29 is a solenoid (electric drive source), 31 is a push rod, 32 is an opening switch, 33 is a door switch, 34 is a control device, 35 is a compressor, 38 is a PWM forming circuit (low voltage application) Means), 41 indicates an EEPROM (memory means).

Claims (4)

In the refrigerator that is configured to cause the door that opens and closes the front opening of the refrigerator body to open by a door opening device provided with an electric drive source,
In addition to disposing the door opening device in a freezer compartment, in order to prevent the door opening device from freezing, the electric drive source is provided with a low voltage applying means for energizing at a lower voltage than during the door opening operation,
The low-voltage energization to the electric drive source by the low-voltage applying unit starts when a predetermined time has elapsed since the end of the previous low-voltage energization. In the refrigerator that is configured to cause the door that opens and closes the front opening of the refrigerator body to open by a door opening device provided with an electric drive source,
In addition to disposing the door opening device in a freezer compartment, in order to prevent the door opening device from freezing, the electric drive source is provided with a low voltage applying means for energizing at a lower voltage than during the door opening operation, Provide a temperature sensor to detect the temperature of the cooler,
The start of low voltage energization to the electric drive source by the low voltage applying means is during defrosting to remove frost adhering to the cooler, and is started when the temperature sensor detects a predetermined temperature or more. A refrigerator characterized by that. In the refrigerator that is configured to cause the door that opens and closes the front opening of the refrigerator body to open by a door opening device provided with an electric drive source,
In addition to disposing the door opening device in a freezer compartment, in order to prevent the door opening device from freezing, the electric drive source is provided with a low voltage applying means for energizing at a lower voltage than during the door opening operation,
The low-voltage energization to the electric drive source by the low-voltage applying means is during defrosting for removing frost attached to the cooler, and is started after a predetermined time has elapsed from the start of the defrosting. Refrigerator. In the refrigerator that is configured to cause the door that opens and closes the front opening of the refrigerator body to open by a door opening device provided with an electric drive source,
In addition to disposing the door opening device in a freezer compartment, in order to prevent the door opening device from freezing, the electric drive source is provided with a low voltage applying means for energizing at a lower voltage than during the door opening operation,
The low voltage energization to the electric drive source by the low voltage applying means is after the defrosting to remove the frost adhering to the cooler is completed, and the opening device arranges the air cooled by the cooler. A refrigerator, which is started by starting an operation of a fan device to be sent to the freezer compartment provided.

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