JP2010071567A - Refrigerator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a refrigerator increasing internal volume without miniaturizing a cooler and reducing costs by disposing an electronic board housing part in an optimal position. <P>SOLUTION: The refrigerator is equipped with one cooler 8 and a compressor 19. A refrigeration compartment 1, a first freezing compartment 2, a second freezing compartment 3, and a vegetable compartment 4 are respectively composed from the top. The cooler 8 is disposed in a back face of the second freezing compartment, and the compressor 19 is provided in a machine chamber 13 formed in a back face of the vegetable compartment. The electronic board housing part 25 is installed in a back face of the refrigerator between the cooler 8 and the machine chamber 13 in a height direction. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a refrigerator, and more particularly to an arrangement of an electronic control board for satisfying a demand for a large capacity refrigerator.

  In recent years, the refrigerator has been required to have a large capacity, and technical development has been advanced to increase the volumetric efficiency by changing the arrangement of the electronic control board in order to increase the volumetric efficiency.

  Therefore, in the conventional refrigerator, in order to ensure the cooling performance by increasing the capacity, the size of the cooler is not reduced, and the machine room in which the compressor etc. provided in the lower back part of the refrigerator body is arranged A device in which an electronic control board storage portion is arranged in the upper space of the device has been proposed (see, for example, Patent Document 1). In the refrigerator, a power cord for connection to an external power source is entered from above the electronic substrate housing portion with a bush portion fixed to the back of the refrigerator on the electronic substrate housing portion with a screw.

  In addition, there are also ones in which two small coolers are used and an electronic substrate storage unit is arranged on the back of the vegetable room (see, for example, Patent Document 2). In the refrigerator, the outlet of the power cord is provided on the side of the electronic board housing, so that the distance is the same regardless of whether the outlet (external power outlet) is above or below. Therefore, there is no sagging of useless code and the possibility of damage is reduced.

Japanese Patent No. 4102285 (FIG. 2) Japanese Patent No. 3789294 (FIG. 1)

  In the refrigerator of Patent Document 1, an electronic control board storage unit is installed above the machine room in which the compressor at the lower part of the refrigerator back is arranged. However, the compressor, one of the parts that generate the most heat during the operation of the refrigerator, exists in the same space. Even if the electronic control board is surrounded by a sheet metal with good heat conductivity, it is affected by the heat from the machine room fan. In addition to being easily received, addition of a sealing material for preventing entry of dust or the like is inevitable, and it is necessary to select an electronic component having excellent heat resistance, which is disadvantageous in terms of cost. The power cord is pulled out from the upper left side of the electronic control board storage. Furthermore, in order to drain the water in the electronic control board storage part, go to the lower part of the storage part once, and then return to the upper side to connect to the electronic control board, so the power cord is extended accordingly. There was a need.

  Moreover, since the refrigerator of patent document 2 is a refrigerator which has two coolers and each is equipped with the fan, the thermistor, and the defrosting apparatus, the wiring length from the electronic substrate storage part installed in the refrigerator back center is as follows. This is shorter than the case where the electronic substrate storage unit is installed at the upper back of the refrigerator. However, there is a cooler on the back of the refrigerator compartment, and this is a form that goes against the recent trend of increasing internal volume, which is disadvantageous in terms of cost. There is also a risk of lack of ability. In addition, the power cord is pulled out from the side of the electronic board storage part.In this case, the power cord is not drained, and if the dew on the back of the refrigerator or the dew on the wall against the back of the refrigerator drops, There is a risk of reaching the electronic board housing and entering.

  The present invention has been made to solve the above-described problems. At least, by arranging the electronic substrate storage unit at the optimum position, the internal volume can be increased and the cost can be reduced without downsizing the cooler. An object of the present invention is to provide a refrigerator that can reduce the amount of waste.

  The refrigerator according to the present invention includes a single cooler and a compressor, and configures a refrigerator room, a first freezer room, a second freezer room, and a vegetable room in order from the top, and the second freezer room In a refrigerator in which a cooler is disposed on the back side and a compressor is installed in a machine room formed on the outside of the vegetable room back side, the electronic control board storage part is on the back side of the refrigerator and in the height direction It is installed between the machine room.

  According to the refrigerator according to the present invention, since the electronic control board storage unit is installed on the rear surface of the refrigerator and between the cooler and the machine room in the height direction, the internal volume is increased without downsizing the cooler. Cost reduction can be achieved.

Embodiment 1 FIG.
Hereinafter, Embodiment 1 of the present invention will be described with reference to the drawings.
1 is a front view of a refrigerator according to Embodiment 1 of the present invention (however, doors, cases, etc. are not shown), FIG. 2A is a longitudinal sectional view of the refrigerator of FIG. 1, and FIG. It is an enlarged view of the cross section of a control board storage part.
In the refrigerator of the first embodiment, the refrigerator compartment 1, the first freezer compartment 2, the second freezer compartment 3, and the vegetable compartment 4 are formed from the top of the refrigerator main body, and each room is thermally insulated. It is partitioned by a partition wall. The door 1a of the refrigerator compartment 1 is a door which is rotated by a hinge device, and a temperature operation panel 29 capable of adjusting the inside temperature is installed on the surface of the refrigerator compartment door 1a, and the outside air for measuring the outside air temperature therein. A thermistor is installed. The doors of the first freezer compartment 2, the second freezer compartment 3, and the vegetable compartment 4 are drawer type doors. The first freezer compartment 2 is partitioned by a partition near the center of the refrigerator, the left freezer compartment 2a is an ice making chamber equipped with an automatic ice maker 30, and the right freezer compartment 2b is a freezer whose room temperature is switched by a damper device 26. It is a room.

  A fan grill 27 is installed in the back of the second freezer compartment 3, and the fan grill 27 includes a fan 9 that sends cold air to each chamber. The fan grill 27 and the inner box facing the fan grill 27 form a cooler chamber 12, and the cooler 8 is disposed in the cooler chamber 12. The cooler 8 is thus arranged on the back side (in the refrigerator main body) of the second freezer compartment 3. A thermistor 5 a that detects the temperature of the cooler 8 is attached to the cooler 8, and a defrosting device (heater) 11 is installed under the cooler 8. The fan grill 27 includes a damper device 26 that adjusts the amount of cool air in each chamber, a thermistor 5b that detects the temperature of the first freezer compartment 2, a thermistor 5c that detects the temperature of the second freezer compartment 3, and an abnormality caused by the defroster 11. A thermal fuse for detecting heat generation is provided. These electrical components are connected by wiring and connectors coming out of the refrigerator main body.

  Moreover, the temperature of the cooler chamber lower space 28 where the defrosting device 11 at the lower part of the cooler 8 is installed is higher than that of the cooler 8, and the heat insulation thickness with the outside of the refrigerator is set to the heat insulation thickness on the back of the cooler 8, for example. It can be made slightly thinner than about 60 mm, the heat insulation thickness with the electronic control board housing portion 25 is about 30 mm, for example, and the electronic control board 6 is inclined about 10 degrees, for example (see FIG. 2B). It is installed between the cooler 8 and the machine room 13 in the refrigerator height direction. At this time, the urethane (heat insulating member) 51 having a thickness of about 10 to 15 mm is filled between the electronic control board storage unit 25 and the machine room 13, and the urethane (heat insulating member) 51 is interposed to heat the machine room 13. The temperature rise of the electronic control board storage part 25 due to the influence is reduced.

  By the way, when the electronic control board storage unit 25 is installed on the rear surface of the cooler 8 having a relatively large heat insulation thickness, the dew on the electronic control board storage unit 25 is taken into consideration, and the substrate heat generation to the cooler 8 is considered. If the heat insulation thickness is set to 60 mm in consideration of the performance deterioration due to the heat effect, the inner volume is reduced because it protrudes into the compartment. Further, when the electronic control board storage unit 25 is installed on the cooler 8, the cool air flow path cooled by the cooler 8 may bend and become air path resistance, which may deteriorate performance. In order to maintain the cooling performance and increase the internal volume efficiency, it is optimal to use a space with a relatively large heat insulation thickness at the lower back surface of the cooler 8 as in the first embodiment.

  In the first freezer compartment 2, an automatic ice maker 30 having a thermistor installed under the ice tray for detecting the ice temperature and a gear BOX that reverses the ice tray by a gear mechanism is provided in the first freezer compartment 2. It is fixed on the top. These electrical components are also connected by wires and connectors coming out of the refrigerator main body.

  In the refrigerating room 1, a thermistor 5d for detecting the temperature of the refrigerating room 1 is installed in a rear air passage component of the refrigerating room 1, and a water supply tank and a pump motor for supplying water to the first automatic ice maker 30 are installed. Moreover, the interior lamp is arrange | positioned using LED etc. in the back side of the refrigerator compartment 1, or a side surface. These electric components are connected by wiring and connectors coming out of the refrigerator main body at the back of the floor of the refrigerator compartment.

  Electrical equipment such as a compressor 19, a machine room fan 10, and a capillary switching valve 18 are arranged in the machine room 13, and the machine room 13 is covered with a machine room cover 15.

  As described above, the electrical parts in the refrigerator are relatively large in the lower part of the refrigerator (lower than the first freezer compartment 2), and if the electronic control board 6 is installed in the lower part of the refrigerator, the wiring is naturally shortened and the cost is reduced.

FIG. 3 is a rear view of the refrigerator, and details of the electronic control board storage unit 25 will be described.
As shown in FIG. 3, a machine room 13 and an electronic control board storage unit 25 are formed on the back side of the refrigerator. In the machine room 13, a compressor 19, a condenser 20, a drain pan 21, a capillary switching valve 18, and a machine room fan 10 are installed. The electronic control board storage unit 25 is formed on the machine room 13, and includes a noise filter board 7 that suppresses power supply noise, an electronic control board 6, a power cord 16, and a compressor wiring 17 for connecting to the compressor 19. is set up. Further, as shown in FIG. 4 in which the electronic control board housing portion 25 is enlarged, a partition wall having a thickness of about 15 mm, for example, is formed between the noise filter board 7 and the electronic control board 6 by the board fixing attach 22. The heat generated by the noise filter substrate 7 during loading is prevented from affecting the electronic control substrate 6. Further, as shown in FIG. 5, a heat insulating material 23 may be placed in the partition wall of the substrate fixing attachment 22 in order to reduce the temperature effect.

  Further, in the first embodiment, the power cord 16 is connected to the noise filter substrate 7 by a connector in the substrate housing portion and pulled out to the outside (left side). At this time, the bushing of the power cord 16 is fitted to the board fixing attachment 22 and the electronic control board storage portion 25 is covered with the sheet metal cover 14 from above, and the power cord 16 is pulled out to the outside of the refrigerator. It is drawn at an angle of about 10 degrees diagonally below. This is to prevent water from entering the electronic control board storage unit 25 through the power cord 16 when there is condensation on the back of the refrigerator or when there is dew on the wall of the refrigerator. It can be prevented by setting an angle of 7 degrees or more. Further, the refrigerator back sheet metal on the electronic control board storage unit 25 has a convex rib 24 having a substantially “bent” shape, and dew etc. dripping from above the rib 24 flows outside the refrigerator along this shape. It acts as an umbrella and further reduces the water penetration into the electronic control board storage unit 25. In this way, the back of the refrigerator is basically not a place that the user usually sees, so it is desirable to make such measures double or triple.

  The compressor wiring 17 connecting the electronic control board 6 and the compressor 19 is connected to connectors at both ends thereof, connected to the electronic control board 6 and the compressor 19 via the connectors, and relayed in the middle. The specifications do not include connectors. A groove 53 is formed in a partition part 52 between the machine room 13 and the electronic control board housing part 25, and a sealing material 54 is wound around and fixed to the wiring in the groove part. In the machine room 13, the fan 10 is installed as described above. In the lower part of the rear face of the refrigerator, there is a lot of dust and the like. Is not installed. The connector on the compressor 19 side of the compressor wiring 17 is covered with a connector cover (not shown), so that tracking does not occur, and the electronic control board 6 side of the compressor wiring 17 sucks air without wind speed. In addition, since the sheet metal cover 14 has a sealed structure, tracking due to dust or the like can be reliably prevented.

It is a front view of the refrigerator in Embodiment 1 of this invention. It is sectional drawing of the refrigerator of FIG. It is an enlarged view of a cross section of an electronic control board storage part. It is a rear view of the refrigerator of FIG. It is an enlarged view of the electronic control board | substrate storage part of the refrigerator of FIG. It is a figure of the electronic control board | substrate accommodation attachment of the refrigerator of FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Refrigeration room, 2 1st freezer room, 2nd freezer room, 4 vegetable room, 5a-5d thermistor, 6 electronic control board, 7 noise filter board, 8 cooler, 9 fan (inside chamber), 10 fan (Machine room), 11 defroster, 12 cooler room, 13 machine room, 14 control board cover, 15 machine room cover, 16 power cord, 17 compressor wiring, 18 capillary switching valve, 19 compressor, 20 condenser, 21 Drain pan, 22 Substrate fixing attachment, 23 Insulating material, 24 Rib (refrigerator back sheet metal), 25 Electronic control board storage, 26 Damper device, 27 Fan grill, 28 Cooler room lower space, 29 Temperature control panel, 30 Automatic Ice maker, 51 Urethane (heat insulating member), 52 partition, 53 groove, 54 sealing material.

Claims (4)

It is equipped with one cooler and a compressor, and a refrigerator compartment, a first freezer compartment, a second freezer compartment, and a vegetable compartment are configured in order from the top, and a cooler is disposed on the back of the second freezer compartment. In the refrigerator in which a compressor is installed in the machine room formed on the back of the vegetable room,
An electronic control board storage unit is installed on the rear surface of the refrigerator and between the cooler and the machine room in the height direction.   2. The refrigerator according to claim 1, wherein a power cord is drawn obliquely downward from an upper side portion of the electronic control board storage unit.   Connectors are provided at both ends of the wiring connecting the electronic control board housed in the electronic control board housing section and the compressor installed in the machine room, and the electronic control board and the compressor are connected via the connector. 3. The refrigerator according to claim 1, wherein the refrigerator is connected and does not include a relay connector in the middle of the wiring.   The refrigerator according to any one of claims 1 to 3, wherein a heat insulating member is interposed between the machine room and the electronic control board storage unit.

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