JP6466664B2 - refrigerator - Google Patents

Description

  The present invention relates to a refrigerator in which a cold air passage is branched along a wall surface of a storage room.

  A conventional refrigerator is disclosed in Patent Document 1. In this refrigerator, a refrigeration room (storage room) is arranged at the top, and a freezing room (storage room) is arranged below the refrigeration room. A cold air passage extending vertically is disposed behind the freezer compartment and the refrigerator compartment, and a cooler and a blower are disposed in the cold air passage. The cold air generated by heat exchange in the cooler flows through the cold air passage by driving the blower. A return opening is provided in the lower part of the refrigerator compartment, and a return passage extending downward from the return opening to return the cool air to the cooler is provided.

  The cold air passage is branched into a right passage (first branch passage) and a left passage (second branch passage) on the back side of the refrigerator compartment, and a plurality of discharge ports facing the refrigerator compartment are opened in the right passage and the left passage. Thereby, cold air can be sufficiently distributed in the refrigerator compartment. An illumination device having LEDs is disposed between the right passage and the left passage.

  A machine room is provided at the lower rear end of the refrigerator, and a compressor and a control board are arranged in the machine room. The compressor is connected to a cooler to operate the refrigeration cycle. The control board has a control circuit that controls the blower, the compressor, and the lighting device. That is, the control board has a control circuit that controls the electrical components. The control circuit and the electrical component are connected by wiring.

  The refrigerator described in Patent Document 2 has a heat insulating box body filled with a foam heat insulating material between the inner box and the outer box, and stores the control board behind the storage chamber at the center in the vertical direction of the heat insulating box body. A storage unit is provided. The storage part is formed by a hollow part in which a part of the outer box is recessed toward the inner box. Thereby, the length of the wiring which connects a control circuit and an electrical component can be shortened rather than the refrigerator of patent document 1 which distribute | arranged the control board to the machine room.

JP 2012-2394 A (page 5, page 6, FIG. 1, FIG. 2) JP-A-2006-64379 (9th page, 10th page, FIG. 1)

  However, according to the conventional refrigerator, the storage part is formed such that a part of the outer box is recessed toward the inner box. Therefore, if the thickness of the foam insulation is secured in the storage part, the inner part of the part facing the storage part A box projects into the storage chamber. For this reason, there existed a problem that the volumetric efficiency of a storage chamber fell.

  An object of this invention is to provide the refrigerator which can improve an assembly property, without reducing the volumetric efficiency of a store room.

  In order to achieve the above object, the present invention includes a storage chamber for storing stored items, and a cold air passage through which the cold air discharged into the storage chamber flows, and the cold air passage branches along a wall surface of the storage chamber. In a refrigerator having a first branch passage and a second branch passage, a duct that is attached to the wall surface of the storage chamber by forming the first branch passage and the second branch passage by a heat insulating material disposed on the back surface of the front panel that covers the front surface A control board provided with a unit and having a control circuit for controlling electrical components is attached between the first branch passage and the second branch passage of the duct unit.

  Further, the present invention, in the refrigerator having the above-described configuration, includes an electrical box having a storage portion that opens one side and stores the control board, and a lid portion that closes the storage portion, and the electrical box is a first branch passage. It is preferable that it is fixed between the second branch passages.

  In the refrigerator having the above-described configuration, it is more preferable that the storage unit and the lid have flame retardancy.

  In the refrigerator having the above-described configuration, the first and second insertion holes provided in the storage portion and the lid portion, respectively, may be provided in the refrigerator having the above-described configuration. It is preferable that the insertion hole is inserted into the projecting portion and a screw is screwed into the screw hole to fix the storage portion and the lid portion together.

  In the refrigerator having the above-described configuration, it is preferable that a storage unit that stores the control board is integrally formed on the back side of the front panel, and a lid that covers the storage unit is provided.

  Moreover, in the refrigerator having the above-described configuration, it is more preferable that the front panel and the lid have flame retardancy.

  According to the present invention, in the refrigerator configured as described above, the control board is disposed so that a mounting surface for mounting the control circuit is vertical, and the control circuit includes a coil and a power transistor, and the coil and the power transistor are arranged. Is preferably disposed below the mounting surface.

  In the refrigerator having the above-described configuration, the electric component includes a compressor that operates a refrigeration cycle, a blower that sends out cold air, and a temperature sensor that detects the temperature of the storage chamber, and is controlled by the control circuit. Preferably, the part includes the compressor, the temperature sensor and the blower.

  According to the present invention, the first branch passage and the second branch passage are formed by the heat insulating material disposed on the back surface of the front panel so as to be attached to the wall surface of the storage chamber, and the control board is the first branch passage of the duct unit. And the second branch passage. Thereby, cold air can be spread easily in the storage chamber. Moreover, a control board can be arrange | positioned in the space between a 1st branch channel | path and a 2nd ventilation channel, and a control circuit and an electrical component can be connected easily. Further, the control board can be attached to the storage chamber when the first branch passage and the second branch passage are formed in the storage chamber. Therefore, the assembling property of the refrigerator can be improved without reducing the volumetric efficiency of the storage room.

The front view which shows the inside of the refrigerator of 1st Embodiment of this invention. Sectional drawing on the right side showing the refrigerator according to the first embodiment of the present invention. Side surface sectional drawing which shows the duct unit of the refrigerator of 1st Embodiment of this invention. The rear view which shows the duct unit of the refrigerator of 1st Embodiment of this invention. The perspective view which shows a mode that the accommodating part and cover part of the duct unit of the refrigerator of 1st Embodiment of this invention are fixed to a front panel. The rear view which shows the duct unit of the refrigerator of 2nd Embodiment of this invention. Side surface sectional view which shows the duct unit of the refrigerator of 3rd Embodiment of this invention.

<First Embodiment>
Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a front view showing the inside of the refrigerator of the first embodiment, and FIG. 2 is a right side sectional view showing the refrigerator. In FIG. 1, the arrows indicate the flow of cold air. The refrigerator 1 has a heat insulating box 1a filled with a foam heat insulating material 9 such as urethane foam between the outer box 1b and the inner box 1c. The freezer compartment 2 is formed in the upper part of the refrigerator 1 by the heat insulation box 1 a, and the refrigerator compartment 3 is formed below the freezer compartment 2. The freezer compartment 2 is opened and closed by a rotary door (not shown) to store the stored items in a frozen state. The refrigerator compartment 3 is opened and closed by a rotary door (not shown) to store the stored items in a refrigerator.

  The outer box 1b is formed of a coated steel plate or the like and covers the outer side of the inner box 1c. The inner box 1c is formed of a resin molded product, and the freezer compartment 2 and the refrigerator compartment 3 are separated by a partition wall 30 attached to the inner box 1c.

  The partition wall 30 has a communication hole (not shown) on its side surface, and the foamed heat insulating material 9 is filled into the partition wall 30 through the communication hole when the heat insulating box 1a is formed. Thereby, the partition wall 30 is integral with the heat insulation box 1a. In addition, you may attach the partition wall 30 previously filled with heat insulating materials, such as a polystyrene foam, to the inner box 1c.

  The refrigerating chamber 3 is provided with a plurality of stages (four stages in the present embodiment) of placing shelves 31 for placing stored items. In FIG. 1, illustration of the uppermost mounting shelf 31 is omitted. The mounting shelf 31 is supported by a support member 31 a provided on the side wall of the refrigerator compartment 3 so that it can be pulled out.

  A case 32 having an open upper surface is disposed below the lowermost mounting shelf 31 so as to be drawn out. The case 32 is made of, for example, a resin, and stored items are taken in and out through the opening on the upper surface. The duct unit 10 is attached to the back wall surface of the refrigerator compartment 3 and a temperature sensor 35 for detecting the temperature in the refrigerator compartment 3 is provided.

  A machine room 50 is provided behind the lower part of the refrigerator compartment 3. A compressor 51 is disposed in the machine room 50. A condenser, an expander (all not shown) and a cooler 6 are connected to the compressor 51 in order, and a refrigerant such as isobutane is circulated by driving the compressor 51 to operate a refrigeration cycle. Thereby, the cooler 6 becomes the low temperature side of the refrigeration cycle.

  A cold air passage 7 is provided at the rear of the freezer compartment 2 via a back plate 8. The duct unit 10 disposed in the refrigerator compartment 3 is provided with a cold air passage 12 communicating with the cold air passage 7 via a damper (not shown). A cooler 6 and a blower 5 are installed in the cool air passage 7, and a plurality of discharge ports 2 a and return ports 2 b are opened in the back plate 8.

  3 and 4 show a right side sectional view and a rear view of the duct unit 10, respectively. In FIG. 4, the solid line arrows indicate the flow of cold air. In the duct unit 10, a heat insulating material 13 such as expanded polystyrene having a U-shape in front view is disposed on the back surface of the front panel 11 made of ABS resin or the like covering the front surface.

  The front panel 11 has an extending portion 14 that extends forward from the upper portion, and an engaging portion 11 e that protrudes upward is provided at the front end of the extending portion 14. The duct unit 10 is attached by engaging the engaging portion 11e with the ceiling surface of the refrigerator compartment 3 and screwing the screw 19 inserted through the lower portion of the front panel 11 onto the back wall of the refrigerator compartment 3.

  Ribs 11d are erected on the left and right peripheral edge portions of the front panel 11, and ribs 11f and 11g extending vertically are opposed to the rib 11d on the rear surface of the front panel 11. A plurality of locking claws 11j are formed at the rear end of the rib 11d. The C-shaped heat insulating material 13 is inserted between the one rib 11d and the rib 11f and between the other rib 11d and the rib 11g, and is attached to the front panel 11 by the locking claw 11j.

  The heat insulating material 13 has a flat portion 13a disposed along the front panel 11 and a peripheral wall portion 13b protruding rearward from the periphery of the flat portion 13a. A cool air passage 12 through which cool air flows is formed between the opposed peripheral wall portions 13b. The upper end of the duct unit 10 is formed so as to open on the peripheral wall portion 13b so that the cold air passage 12 communicates with the cold air passage 7 (see FIG. 2) and extends forward on the extension portion 14. A cold air outlet 14 a is opened in front of the extended portion 14.

  Also, a branch passage 12a (first branch passage) and a branch passage 12b (second branch passage) branching left and right into the cool air passage 12 behind the front panel 11 and extending in the vertical direction by a U-shaped heat insulating material 13 in front view. ) Is formed. A discharge port 72a and a discharge port 72b are opened on the outer peripheral wall portion 13b of the branch passage 12a and the branch passage 12b, respectively. A discharge port 73a and a discharge port 73b are opened at the lower ends of the branch passage 12a and the branch passage 12b, respectively.

  A space 15 is formed between the branch passage 12a and the branch passage 12b on the back surface of the front panel 11. A lighting device 40 and a temperature control knob 18 are disposed below the space 15. The lighting device 40 includes a lamp cover 41 made of a translucent resin, and an LED (not shown) disposed behind the lamp cover 41.

  The temperature adjustment knob 18 is rotatably provided on the front surface of the front panel 11. The set temperature of the refrigerator compartment 3 can be changed by rotating the temperature adjusting knob 18.

  An electrical box 20 that houses the control board 25 is provided above the space 15. The electrical box 20 has a storage portion 21 having an opening on the back side and the control board 25 being installed, and a lid portion 22 that closes the opening. The storage part 21 and the cover part 22 are formed of a flame retardant resin of grade V0 of the American Insurer Safety Laboratory (UL: Underwriters Laboratories Inc.) standard.

  A control circuit 25 b that controls electrical components such as the compressor 51, the blower 5, the temperature sensor 35, and the lighting device 40 is mounted on the mounting surface 25 a of the control board 25. The control circuit 25b has a coil 25c and a power transistor 25d. The control circuit 25b and the electrical component are connected by a wiring 80.

  The control board 25 is attached to the storage portion 21 with screws or the like so that the mounting surface 25a faces the lid portion 22 and becomes vertical. At this time, the coil 25c and the power transistor 25d are disposed below the mounting surface 25a. Thereby, the stress applied to the control board 25 can be reduced as compared with the case where the coil 25c and the power transistor 25d having a relatively large weight and heat generation amount are disposed above the mounting surface 25a. Therefore, damage to the control board 25 can be reduced.

  Engaging portions 11h are provided on the side surfaces of the ribs 11f and 11g so as to face each other. In addition, locking portions 21 c that are locked to the engaging portions 11 h are provided on both side surfaces of the storage portion 21. The storage portion 21 is attached to the front panel 11 by the locking portion 21c being locked to the engaging portion 11h.

  At this time, the wiring 80 is connected to the electrical box 20 from a hole (not shown) formed by a notch (not shown) on the lower wall of the lid portion 22 and a notch (not shown) on the lower wall of the storage portion 21. Derived outside.

  FIG. 5 is a perspective view showing how the storage unit 21 and the lid unit 22 are fixed to the front panel 11. At the lower part of the back surface of the front panel 11, one protruding portion 11a is provided to protrude toward the back side (inner box 1c side). A screw hole 11b is formed in the protruding portion 11a.

  The storage portion 21 and the lid portion 22 are respectively provided with projecting portions 21b and 22b that protrude downward (to the right in FIG. 5). A first insertion hole 21a and a second insertion hole 22a are provided in the projecting portions 21b and 22b, respectively. With the first insertion hole 21a and the second insertion hole 22a inserted into the protruding portion 11a, the storage portion 21 and the lid portion 22 are connected to the front panel 11 by screwing the screw 11c into the screw hole 11b of the protruding portion 11a. It is fixed to the unit. That is, the storage portion 21 and the lid portion 22 are screwed at one place on the front panel 11. Thereby, the storage part 21 and the cover part 22 can be easily fixed to the front panel 11.

  The storage unit 21 storing the control board 25 is attached in close contact with the back surface of the front panel 11, and the lid portion 22 that closes the opening of the back surface of the storage unit 21 is a bottom surface 61 of a recess 60 that is recessed in the inner box 1 c. (See FIG. 3). Thereby, the storage part 21 and the cover part 22 can be reliably attached to the refrigerator compartment 3. Moreover, the storage space in the refrigerator compartment 3 can be ensured widely.

  In the refrigerator having the above-described configuration, when the blower 5 is driven, cold air generated by heat exchange in the cooler 6 flows through the cold air passage 7 and is discharged into the freezer compartment 2 through the opening 2a. Thereby, the stored matter in the freezer compartment 2 can be stored frozen. The cold air flowing through the freezer compartment 2 returns to the cooler 6 through the return port 2b.

  A part of the cold air flowing through the cold air passage 7 flows into the cold air passage 12 via the damper. A part of the cold air flowing through the cold air passage 12 flows into the refrigerator compartment 3 via the discharge port 14a. Further, the cold air flows through the branch passage 12a and the branch passage 12b and flows into the refrigerator compartment 3 through the discharge ports 72a, 73a, 72b, and 73b. Thereby, cold air spreads the whole inside of the refrigerator compartment 3, and a stored item can be reliably refrigerated and preserved.

  At this time, the control circuit 25 b of the control board 25 controls the compressor 51 and the blower 5 based on the input of the temperature sensor 35. For example, when the temperature in the refrigerator compartment 3 becomes higher than a predetermined upper limit temperature (for example, 5 ° C.), the control circuit 25 b drives the compressor 51 and the blower 5. On the other hand, when the temperature of the refrigerator compartment 3 becomes lower than a predetermined lower limit temperature (for example, 3 ° C.), the control circuit 25 b stops the compressor 51 and the blower 5.

  The control circuit 25b controls the lighting device 40 based on an input of a door sensor (not shown) that detects opening and closing of the door of the refrigerator compartment 3. Specifically, when the door of the refrigerator compartment 3 is opened, the control circuit 25b energizes the LED to turn on the lighting device 40. Thereby, the user can visually recognize the stored item in the refrigerator compartment 3 easily. Moreover, when the door of the refrigerator compartment 3 is closed, the control circuit 25b cancels | releases electricity supply to LED and turns off the illuminating device 40 of a lighting state.

  At this time, since the heat insulating material 13 is arranged between the branch passage 12a and the control board 25 and between the branch passage 12b and the control board 25, it is possible to prevent the temperature of the cold air from rising due to the heat of the control circuit 25b. Can do. Note that the amount of heat generated by the control circuit 25b entering the refrigerator compartment 3 via the front panel 11 is sufficiently small relative to the amount of external heat entering due to the opening of the door. For this reason, even if it arrange | positions the control board 25 in the refrigerator compartment 3, there is no big trouble in the refrigerator preservation of a store thing.

  In addition, the coil 25c and the power transistor 25d, which generate a large amount of heat, are disposed below the mounting surface 25a. Thereby, in the electrical box 20, the air heated by the coil 25c and the power transistor 25d rises in the electrical box 20 and natural convection occurs. Therefore, the area where the cold heat is transmitted on the electrical box 20 is transferred by natural convection and the temperature drop is suppressed. As a result, condensation of the control board 25 can be prevented.

  Further, since the lid portion 22 is in close contact with the bottom surface 61 of the recess 60 of the inner box 1c, the temperature difference between the bottom surface 61 and the outside of the refrigerator 1 is greater than when a gap is provided between the lid portion 22 and the bottom surface 61. Becomes smaller. Thereby, the heat penetration | invasion amount to the recessed part 60 from the exterior of the refrigerator 1 can be made small. Therefore, even if the thickness of the foam heat insulating material 9 is reduced by forming the concave portion 60 and the lid portion 22 is disposed in the concave portion 60, it is possible to prevent the heat insulation from being deteriorated.

  According to this embodiment, the heat insulating material 13 arranged on the back surface of the front panel 11 forms the branch passage 12a (first branch passage) and the branch passage 12b (second branch passage) to form the wall surface of the refrigerator compartment 3 (storage chamber). The control unit 25 is attached between the branch passage 12 a and the branch passage 12 b of the duct unit 10. Thereby, cold air can be spread easily in the refrigerator compartment 3.

  Further, the control board 25 is disposed in the space 15 between the branch passage 12a and the branch passage 12b, and the control board 25 and the electric parts such as the compressor 51, the temperature sensor 35, the blower 5, and the lighting device 40 are wired 80. Can be connected more easily. In addition, the control board 25 can be attached to the refrigerator compartment 3 when the branch passage 12 a and the branch passage 12 b are formed in the refrigerator compartment 3. Therefore, the assemblability of the refrigerator 1 can be improved without reducing the volumetric efficiency of the refrigerator compartment 3.

  In addition, an electrical box 20 having a storage portion 21 that opens one side and stores the control board 25 and a lid portion 22 that closes the storage portion 21 is provided, and the electrical box 20 is between the branch passage 12a and the branch passage 12b. Fixed to. Thereby, the control board 25 can be easily attached to the duct unit 10.

  Moreover, since the accommodating part 21 and the cover part 22 have a flame retardance, when the control board 25 ignites, it is possible to prevent burning out of the duct unit 10. Therefore, the safety of the refrigerator 1 can be easily improved.

  In addition, one protruding portion 11a that protrudes from the back surface of the front panel 11 and is formed with a screw hole 11b is provided, and the first insertion hole 21a and the second insertion hole 22a provided in the storage portion 21 and the lid portion 22 are protruding portions, respectively. The housing portion 21 and the lid portion 22 are integrally fixed by inserting the screw 11c into the screw hole 11b. Thereby, the control board 25 can be easily attached to the duct unit 10.

  Further, the control board 25 is disposed so that the mounting surface 25a is vertical, and the coil 25c and the power transistor 25d are disposed below the mounting surface 25a. Thereby, in the electrical box 20, the air heated by the coil 25c and the power transistor 25d rises in the electrical box 20 and natural convection occurs. Therefore, the area where the cold heat is transmitted on the electrical box 20 is transferred by natural convection and the temperature drop is suppressed. As a result, condensation of the control board 25 can be prevented.

  Further, since the coil 25c and the power transistor 25d, which are relatively heavy, are arranged below the mounting surface 25a, the stress on the control board 25 is reduced as compared with the case where the coil 25c and the power transistor 25d are arranged above the mounting surface 25a. can do. Thereby, damage to the control board 25 can be reduced.

Second Embodiment
Next, a second embodiment of the present invention will be described. FIG. 6 shows a rear view of the duct unit of the refrigerator of the present embodiment. For convenience of explanation, the same parts as those in the first embodiment shown in FIGS. This embodiment is different from the first embodiment in that the storage portion 23 is formed integrally with the front panel 11. Other parts are the same as those in the first embodiment.

  A storage portion 23 having the same shape as the storage portion 21 is formed integrally with the front panel 11 on the back side of the front panel 11. The control unit 25 is stored in the storage unit 23, and the storage unit 23 is covered with the lid unit 22. The front panel 11 and the lid portion 22 are made of a flame retardant resin of grade V0 of the American Insurer Safety Laboratory (UL: Underwriters Laboratories Inc.) standard. In this embodiment, unlike the first embodiment, the engaging portion 11h and the locking portion 21c are omitted.

  According to this embodiment, the same effect as that of the first embodiment can be obtained. In addition, a storage portion 23 that stores the control board 25 is integrally formed on the back side of the front panel 11, and a lid portion 22 that covers the storage portion 23 is provided. Thereby, the assembly property of the refrigerator 1 can be improved more.

  Moreover, since the front panel 11 and the cover part 22 have a flame retardance, when the control board 25 is ignited, it is possible to prevent similar firing to the outside of the duct unit 10. Therefore, the safety of the refrigerator 1 can be easily improved.

<Third Embodiment>
Next, a third embodiment of the present invention will be described. FIG. 7 shows a side sectional view of the duct unit of the refrigerator of the present embodiment. For convenience of explanation, the same parts as those in the first embodiment shown in FIGS. This embodiment is different from the first embodiment in that an air layer G including a gap is provided between the storage unit 21 and the front panel 11. Other parts are the same as those in the first embodiment.

  The storage portion 21 is disposed on the back surface of a protruding portion (not shown) provided to protrude from the side surfaces of the ribs 11f and 11g so as to face each other. Thereby, an air layer G composed of a gap is formed between the storage portion 21 and the front panel 11. Due to the air layer G, heat transfer from the heat of the control circuit 25b into the refrigerator compartment 3 can be reduced.

  According to this embodiment, the same effect as that of the first embodiment can be obtained. Further, heat transfer from the heat of the control circuit 25 b into the refrigerator compartment 3 can be reduced by the air layer G formed between the storage portion 21 and the front panel 11. Therefore, the temperature rise of the refrigerator compartment 3 due to the heat of the control circuit 25b can be further reduced.

  In addition, in 1st-3rd embodiment, although the duct unit 10 is attached to the back wall surface of the refrigerator compartment 3, you may attach the duct unit 10 to the ceiling wall surface or side wall surface of the refrigerator compartment 3. FIG.

  Moreover, in the 1st-3rd embodiment, although the recessed part 60 was provided in the inner box 1c, the recessed part 60 does not need to be provided.

  INDUSTRIAL APPLICABILITY The present invention can be used for a refrigerator in which a cold air passage is branched along a wall surface of a storage room.

DESCRIPTION OF SYMBOLS 1 Refrigerator 1a Heat insulation box 1b Outer box 1c Inner box 2 Freezer room 2a Discharge port 3 Refrigeration room 5 Blower 6 Cooler 7 Cold air passage 8 Back plate 9 Foam insulation 10 Duct unit 11 Front panel 11a Protrusion 11b Screw hole 11c Screw 11d rib 11e engaging portion 11f, 11g rib 11h engaging portion 12 cold air passage 12a branch passage (first branch passage)
12b Branch passage (second branch passage)
DESCRIPTION OF SYMBOLS 13 Heat insulating material 14 Extension part 14a Discharge port 15 Space part 18 Temperature adjustment knob 19 Screw 20 Electrical box 21 Storage part 21a 1st insertion hole 21b Projection part 21c Locking part 22 Lid part 22a 2nd insertion hole 22b Projection part DESCRIPTION OF SYMBOLS 23 Storage part 25 Control board 25a Mounting surface 25b Control circuit 25c Coil 25d Power transistor 30 Partition wall 31 Mounting shelf 31a Support member 32 Case 35 Temperature sensor 40 Illumination device 41 Illumination cover 50 Machine room 51 Compressor 60 Concave part 61 Bottom surface G Air layer

Claims (5)

A storage chamber for storing stored items, and a cool air passage through which cool air discharged into the storage chamber flows, wherein the cool air passage is branched along a wall surface of the storage chamber. In the refrigerator with
A duct unit that is attached to the wall surface of the storage chamber by forming a first branch passage and a second branch passage by a heat insulating material disposed on the back surface of the front panel covering the front surface;
Control substrate having a control circuit for controlling the electrical components, along with that provided on the back side of the front panel, the heat insulating material and a second branch passage to form a peripheral wall portion of the first branch passage of the duct unit A refrigerator, wherein the refrigerator is attached to a space formed between the heat insulating material forming the peripheral wall .   An electrical box having a housing part that opens one side and houses the control board and a lid part that closes the housing part is provided, and the electrical box is fixed between the first branch passage and the second branch passage. The refrigerator according to claim 1. Providing one protrusion that protrudes from the back of the front panel to form a screw hole,
The first insertion hole and the second insertion hole respectively provided in the storage part and the lid part are inserted into the projecting part, and a screw is screwed into the screw hole to fix the storage part and the lid part integrally. The refrigerator according to claim 2.   The refrigerator according to claim 1, wherein a storage unit that stores the control board is integrally formed on a back side of the front panel, and a lid that covers the storage unit is provided.   The control board is disposed so that a mounting surface for mounting the control circuit is vertical, and the control circuit includes a coil and a power transistor, and the coil and the power transistor are disposed below the mounting surface. The refrigerator in any one of Claims 1-4 characterized by the above-mentioned.

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