JP7377676B2 - refrigerator - Google Patents

Description

The present invention relates to a refrigerator.

Patent Document 1 describes a refrigerator in which a board is divided into two parts and housed in a case, and the case is arranged in a machine room.

Japanese Patent Application Publication No. 2005-98559

By the way, when the control board is placed in the machine room, it is necessary to place the board upstream of the fan in order to efficiently cool the compressor. However, in the refrigerator described in Patent Document 1, since the two boards are divided and placed one behind the other, the overlap with the fan becomes large in the machine room, which impairs the cooling efficiency of the compressor. Further, in order to reduce the overlap between the case and the fan, it is necessary to enlarge the machine room, but when the machine room is enlarged, there is a problem that the volume inside the refrigerator is reduced.

The present invention solves the conventional problems described above, and aims to provide a refrigerator that can efficiently cool a compressor without enlarging the machine room.

The present invention provides a refrigerator main body having a plurality of storage compartments, a machine room provided on the back side of the refrigerator main body, a compressor and an air blower arranged inside the machine room, and a compressor and an air blower arranged in the machine room. The power system board includes a power system board that supplies power to the compressor, and a power system board storage case that stores the power system board and the reactor, and the power system board storage case includes a board storage section that stores the power system board; a reactor storage part that stores the reactor, the reactor storage part is formed to protrude forward with respect to the board storage part, and the power system board is arranged upstream of the blower. , the compressor is disposed on the downstream side of the blower, the reactor storage section and the blower are disposed at positions overlapping each other in a side view of the refrigerator, and the power system board storage case and the condenser are arranged on the downstream side of the refrigerator. The condenser is arranged at positions that do not overlap with each other when viewed from the side, and the condenser is located below the reactor storage section.

According to the present invention, it is possible to provide a refrigerator that can efficiently cool a compressor without enlarging the machine room.

It is a longitudinal cross-sectional view when the refrigerator of this embodiment is seen from the side. 2 is a schematic cross-sectional view taken along line II-II in FIG. 1. FIG. It is a perspective view showing the back of the refrigerator of this embodiment. It is a back view showing the machine room of this embodiment. 5 is a rear view showing a state in which the board storage case is removed from the machine room shown in FIG. 4. FIG. It is a perspective view showing the internal structure of a machine room. FIG. 3 is a plan view showing the inside of the board storage case. 8 is a plan view showing a state in which a power system board is removed from the state in FIG. 7. FIG. 8 is a sectional view taken along line IX-IX in FIG. 7. FIG. FIG. 3 is a perspective view showing the power system board storage case with the lid removed. FIG. 11 is a perspective view showing a state in which the cord suppressing lid is closed from the state shown in FIG. 10; 7 is a view taken in the direction of arrow XII in FIG. 6. FIG. 13 is a view taken in the direction of arrow XIII in FIG. 12. FIG. 4 is a schematic cross-sectional view taken along line XIV-XIV in FIG. 3. FIG. FIG. 7 is a perspective view showing a modification of the power system board storage case. It is a front view showing a refrigerator compartment. It is a perspective view of the refrigerator compartment seen from the front. FIG. 2 is a block diagram showing the configuration of a refrigerator. It is a perspective view showing a control board storage case. FIG. 3 is a perspective view showing a state in which the lid of the cord storage part of the control board storage case is opened. It is a perspective view when FIG. 20 is seen from the back side. It is a perspective view when a cord retraction member is seen from the front side. It is a perspective view when a cord retraction member is seen from the rear side. It is a perspective view when a refrigerator compartment is seen from the back. 18 is a sectional view taken along the line XXV-XXV in FIG. 17. FIG. 18 is a schematic cross-sectional view taken along line XXVI-XXVI in FIG. 17. FIG.

Hereinafter, the refrigerator of this embodiment will be explained with reference to the drawings. Note that the following description will be made based on the directions shown in FIGS. 1 and 2.
FIG. 1 is a longitudinal cross-sectional view of the refrigerator of this embodiment when viewed from the side.
As shown in FIG. 1, the box body (refrigerator main body, insulation box body) 10 of the refrigerator 1 consists of, from above, a refrigerating compartment 2 (refrigerating temperature range room), an ice making compartment 3 and an upper freezing compartment 4 installed on the left and right sides, and a lower tier. It has storage compartments in the order of a freezer compartment 5 and a vegetable compartment 6. The refrigerator 1 also includes a rotary refrigerator door 2 a that opens and closes the front opening of the refrigerator compartment 2 . The refrigerator 1 also includes a pull-out ice making compartment door 3a that opens and closes the front openings of the ice making compartment 3, upper freezing compartment 4, lower freezing compartment 5, and vegetable compartment 6, respectively, an upper freezing compartment door 4a, a lower freezing compartment door 5a, It is equipped with a vegetable compartment door 6a. Hereinafter, the ice making compartment 3, the upper freezing compartment 4, and the lower freezing compartment 5 will be collectively referred to as a freezing compartment 7 (freezing temperature range room).

The freezer compartment 7 is basically a storage room whose interior is kept in a freezing temperature range (below 0°C), for example, at an average temperature of about -18°C. The refrigerator compartment 2 and the vegetable compartment 6 have a refrigerator temperature range (0°C or higher), for example, the refrigerator compartment 2 is a storage room with an average temperature of about 4°C, and the vegetable compartment 6 is a storage room with an average temperature of about 7°C. be.

The refrigerator compartment 2, the upper freezer compartment 4, and the ice making compartment 3 are separated by a heat insulating partition wall 28. The lower freezer compartment 5 and the vegetable compartment 6 are separated by a heat insulating partition wall 29. In addition, on the front side of each of the ice making compartments 3, upper freezing compartment 4, and lower freezing compartment 5, there is a gap between the ice making compartment door 3a, the upper freezing compartment door 4a, and the lower freezing compartment door 5a. A heat insulating partition wall 30 is provided to prevent air from leaking out of the warehouse and to prevent air from outside the warehouse from entering each storage room.

The box body 10 of the refrigerator 1 is configured by filling a heat insulating material R (for example, urethane foam) between an outer box 10a made of a steel plate and an inner box 10b made of a synthetic resin. The inside of the warehouse is separated. The heat insulating material R is constructed by injecting and foaming a foamed heat insulating material made of rigid urethane foam.

Moreover, in addition to the heat insulating material R, a plurality of vacuum heat insulating materials 25 are mounted in the box body 10 between the outer box 10a and the inner box 10b. That is, the vacuum heat insulating material 25 is provided on the back side, the ceiling side (not shown), the left side (not shown), the right side (not shown), and the bottom side (not shown) of the box 10.

The freezer compartment 7 includes a container 4b that is pulled out integrally with the upper freezer compartment door 4a, a container 5b that is pulled out integrally with the lower freezer compartment door 5a, and a vegetable compartment container 6b that is pulled out integrally with the vegetable compartment door 6a.

Further, at the back of the refrigerator compartment 2, a refrigerator compartment side evaporator 14a (evaporator) is provided in the refrigerator compartment side evaporator chamber 8a. The air, which has become low temperature through heat exchange with the refrigerator compartment side evaporator 14a, is refrigerated via the refrigerator compartment duct 11 and the refrigerator compartment discharge port 11a by the refrigerator compartment fan 9a provided above the refrigerator compartment side evaporator 14a. Air is blown into the compartment 2 to cool the inside of the refrigerator compartment 2. The air blown into the refrigerator compartment 2 returns to the refrigerator compartment side evaporator chamber 8a from the refrigerator compartment return port 15a, and is cooled again by the refrigerator compartment side evaporator 14a.

Furthermore, a chilled compartment 2b in which the indoor temperature is maintained at 0°C is provided at the lowest stage of the refrigerator compartment 2. A shelf member 2c is provided above the chilled chamber 2b so as to cover the entire upper part of the chilled chamber 2b. This shelf member 2c is screwed to the inner box 10b, the refrigerator compartment duct 11, etc., and cannot be removed by the user without permission. Moreover, the refrigerator compartment 2 is provided with a plurality of shelf members 2d whose height positions can be changed.

Further, at the back of the freezer compartment 7, a freezer compartment side evaporator 14b (evaporator) is provided in the freezer compartment side evaporator chamber 8b. The air, which has become low temperature by exchanging heat with the freezer compartment side evaporator 14b, is passed through the freezer compartment air path 12 and the freezer compartment discharge port 12a by the freezer compartment fan 9b provided above the freezer compartment side evaporator 14b. Air is blown into the freezer compartment 7 to cool the inside of the freezer compartment 7. The air blown into the freezer compartment 7 returns to the freezer compartment side evaporator chamber 8b from the freezer compartment return port 17, and is cooled again by the freezer compartment side evaporator 14b.

In the refrigerator 1 of this embodiment, the vegetable compartment 6 is also cooled with air made low in temperature by the freezer compartment side evaporator 14b. The air in the freezer compartment evaporator compartment 8b, which has become low temperature in the freezer compartment evaporator 14b, is transferred to vegetables through a vegetable compartment air path (not shown) and a vegetable compartment damper (not shown) by a freezer compartment fan 9b. Air is blown into the compartment 6 to cool the inside of the vegetable compartment 6. When the vegetable compartment 6 is at a low temperature, cooling of the vegetable compartment 6 is suppressed by closing the vegetable compartment damper. The air blown into the vegetable compartment 6 returns to the lower part of the freezer compartment side evaporator chamber 8b via the vegetable compartment cold air return duct 18 from the vegetable compartment cold air return section 18a provided at the front of the lower part of the heat insulating partition wall 29. .

A refrigerator compartment temperature sensor 41, a freezer compartment temperature sensor 42, and a vegetable compartment temperature sensor 43 are provided on the back side of the refrigerator compartment 2, the freezer compartment 7, and the vegetable compartment 6, respectively. A refrigerator compartment side evaporator temperature sensor 40a is provided above the refrigerator compartment side evaporator 14a, and a freezing compartment side evaporator temperature sensor 40b is provided above the freezer compartment side evaporator 14b. These sensors 41, 42, 43, 40a, 40b (hereinafter collectively referred to as sensors 40) are used in the refrigerator compartment 2, the freezer compartment 7, the vegetable compartment 6, the refrigerator compartment side evaporator 14a, and the freezer compartment side evaporator 14b. Detect temperature. Other sensors include door sensors (not shown) that detect the open and closed states of each door 2a, 3a, 4a, 5a, and 6a.

FIG. 2 is a schematic cross-sectional view taken along line II-II in FIG.
As shown in FIG. 2, a defrosting heater 21 that heats the freezer evaporator 14b is provided at the lower part of the freezer evaporator chamber 8b. This defrosting heater 21 is, for example, a 50W to 200W electric heater, and in this embodiment, a 150W radiant heater is used. Defrosting water (melting water) generated during defrosting of the freezer compartment side evaporator 14b falls into the toy 23b provided at the bottom of the freezer compartment side evaporator compartment 8b, and flows through the drain port 22b and the freezing drain pipe 27b. The air is then discharged to an evaporation tray 33 provided at the top of the compressor 24.

In addition, the defrosting water generated during defrosting of the refrigerator compartment side evaporator 14a falls into the toy 23a provided at the bottom of the refrigerator compartment side evaporator compartment 8a, and is compressed through the drain port 22a and the refrigerator drain pipe 27a. The liquid is discharged to an evaporating dish 33 provided at the top of the machine 24.

The toy 23a is provided with a toy heater 101 that melts the defrosting water when the toy 23a freezes. The refrigerator drain pipe 27a is provided with a drain pipe upper heater 102 and a drain pipe lower heater 103. Furthermore, a toy temperature sensor 45 for detecting the presence or absence of residual water is embedded inside the heat insulating partition wall 28 at the final water collection part of the toy 23a. Note that the toy heater 101, the drain pipe upper heater 102, and the drain pipe lower heater 103 are electric heaters with lower power consumption than the defrosting heater 21, for example, with power consumption of 20 W or less. In this embodiment, the toy heater 101 is a 6W heater, the drain pipe upper heater 102 is a 3W heater, and the drain pipe lower heater 103 is a 1W heater.

The refrigerator 1 includes a power system board 91 (high voltage system board) and a control board 110 (low voltage system board). The power system board 91 and the control board 110 are each equipped with a CPU, memory such as ROM or RAM, an interface circuit, and the like. That is, the refrigerator 1 is not a board in which the power system board 91 and the control board 110 are integrated into one board, but is divided into two boards, the power system board 91 is placed in the machine room 39, and the control board 110 is placed in the refrigerator compartment. 2 (outside the machine room 39). The power system board 91 receives power from a commercial power source and includes a high voltage portion. The control board 110 is insulated from the commercial power source and the power system board 91, and consists of at least a portion with a lower voltage than the commercial power source. The control board 110 can be made of a part with a direct pressure of 12 V or less, for example.

The power system board 91 and the control board 110 are connected by a cord (wire, harness) 92a. Further, the power system board 91 is connected to a commercial power source via a power cord (power line) 92b.

A suction port 10a2 communicating with the machine room 39 is formed in the left side plate 10a1 of the outer box 10a. A discharge port 10a4 communicating with the machine room 39 is formed in the right side plate 10a3 of the outer box 10a.

In addition, since the temperature inside the refrigerator compartment 2 has a smaller difference from the outside temperature than the temperature inside the freezer compartment 7, the thickness of the insulation wall (foam insulation material) of the refrigerator compartment 2 is the same as the thickness of the insulation wall (foam insulation material) of the freezer compartment 7. insulation material).

FIG. 3 is a perspective view showing the back side of the refrigerator of this embodiment.
As shown in FIG. 3, a machine room cover 90 that covers the machine room 39 is provided at the lower rear of the box 10. The machine room cover 90 is formed by pressing a sheet metal, and has a substantially square plate shape.

Further, the machine room cover 90 has a shape that can cover the entire horizontally elongated rectangular area that opens on the back side of the machine room 39. Further, the machine room cover 90 is fixed to the back surface of the box body 10 with screws.

In addition, the machine room cover 90 has a plate portion 90a that is parallel to the back plate 10s of the box body 10 (orthogonal to the side plate 10a1) except for the left and right sides, and a plate portion 90a on both left and right sides of the plate portion 90a. It has inclined plate parts 90b and 90c that extend in an inclined manner. The inclined plate portion 90b is formed so as to approach the box body 10 toward the left end. The inclined plate portion 90c is formed so as to approach the box body 10 toward the right end. Further, a plurality of horizontally elongated slit-shaped holes 90c1 are formed in the inclined plate portion 90c, and function as a discharge port similar to the discharge port 10a4. The reason why the inclined plate parts 90b and 90c are provided in this way is that even if the refrigerator 1 is installed in a state where it is in contact with a wall (in a state where it is stuck), a gap is formed between it and the wall. This is because the gap can be used as a passage for waste heat. Further, the slit-shaped hole 90c1 is not provided at a position where the substrate storage case 80 and the machine room cover 90, which will be described later, overlap in a front view (rear view of the refrigerator). Thereby, it is possible to suppress dust from entering the inside of the board storage case 80 through the hole 90c1.

FIG. 4 is a rear view showing the machine room of this embodiment. Note that FIG. 4 shows a state with the machine room cover 90 removed.
As shown in FIG. 4, the machine room 39 is provided with a compressor 24, a fan 19, a dryer 51, a pressure reducing valve 62, a power system board storage case (hereinafter referred to as the board storage case) 80, etc. There is.

An evaporation dish 33 is provided above the compressor 24. The fan 19 is arranged upstream of the air flow of the compressor 24. The dryer 51 removes moisture in the refrigeration cycle, and is provided above the compressor 24. The pressure reducing valve 62 is provided downstream of the compressor 24.

The board storage case 80 stores a power system board 91 (see FIG. 2), and is arranged upstream of the fan 26. Further, the board storage case 80 is provided with a lid 82 for accessing the power system board 91. This lid 82 has a substantially rectangular shape and is attached facing the back side.

FIG. 5 is a rear view showing a state in which the board storage case is removed from the machine room shown in FIG. 4. Note that FIG. 5 shows a state in which the machine room bottom plate 70 (see FIG. 4) provided at the bottom of the machine room 39 has been removed in order to make the inside of the machine room 39 easier to see.

As shown in FIG. 5, the machine room 39 is provided with a condenser 61 (condenser) upstream of the fan 19 for condensing the refrigerant discharged from the compressor 24. The condenser 61 is a fin-tube heat exchanger, and has a refrigerant pipe 61 a extending toward the compressor 24 . Further, a refrigerant pipe 24a extends from the compressor 24 toward the condenser 61 as well. The refrigerant pipe 61a and the refrigerant pipe 24a are connected via a connection P (see FIG. 4) by brazing, welding, or the like. This connecting portion P is provided at a position that does not overlap with the board storage case 80 when viewed from the rear (rear surface) (see FIG. 4). By providing the connection part P in such a position, the connection part P will not be hidden behind the board storage case 80, and will be easily visible after removing the machine room cover 90 during maintenance, so that the refrigerant from the connection part P will not be hidden. Leakage confirmation inspection becomes easier. When there is a plurality of connection parts P, preferably all of them are located at positions where they do not overlap with the board storage case 80, but a certain effect can be achieved if at least some of them are located at positions where they do not overlap.

FIG. 6 is a perspective view showing the internal structure of the machine room. Note that in FIG. 6, only the compressor 24, fan 19, and board storage case 80 are shown.
As shown in FIG. 6, brackets 24c, 24c are fixed to the compressor 24. Rubber elastic members 24b are attached to each of the brackets 24c at two locations. The compressor 24 is elastically supported on the machine chamber bottom plate 70 by the elastic member 24b.

The fan 19 includes an impeller 19a and a casing 19b that rotatably supports the impeller 19a. Further, the fan 19 has a closing member 19c that closes a gap between the casing 19b and the machine room 39. This closing member 19c makes it difficult for wind to pass through the outside of the casing 19b.

The board storage case 80 includes a case main body 81 that accommodates a power system board 91 (see FIG. 7), etc., and a lid 82 provided on the back surface of the case main body 81.

The case body 81 is configured to have a substantially rectangular opening on the back side (see FIG. 10).

The lid body 82 includes a plate surface portion 82a shaped along the plate portion 90a (see FIG. 3) of the machine room cover 90 (see FIG. 3), and an inclined surface portion 82b shaped along the inclined plate portion 90b (see FIG. 3). It has . Further, the lid body 82 has a bent plate portion 82c that is bent in a direction orthogonal to the case body 81 at the right end. A plurality of square-shaped locking holes 82d are formed along the bent plate part 82c.

FIG. 7 is a plan view showing the inside of the board storage case. Note that FIG. 7 shows a state in which the lid 82 is removed from the substrate storage case 80.
As shown in FIG. 7, the power system board 91 is a rectangular printed wiring board on which electrical and electronic components and connectors are mounted, and mainly includes the compressor 24 (see FIG. 2), defrost heater 21 ( This is a board that controls components that operate at high voltage, such as (see Figure 2).

The case body 81 has a board storage part 83 in which a power system board 91 is stored, and a cord storage part 84 in which a cord 92 connected to the power system board 91 is stored. The board storage section 83 and the cord storage section 84 communicate with each other via a notch 85. Further, the cord storage portion 84 is formed with a cutout portion 84a through which the cord 92 passes rearward (towards the back in the direction perpendicular to the plane of the drawing).

FIG. 8 is a plan view showing the state shown in FIG. 7 with the power system board removed. Note that the cord 92a (92) and the power cord 92b (92) are not shown in FIG. 8 (the same applies to FIGS. 9 to 13).
As shown in FIG. 8, the case body 81 has a reactor storage section 86 that stores a reactor 93 for reducing high frequency noise. This reactor storage portion 86 is provided with a fixing member 86a for fixing the reactor 93.

Further, the case body 81 has side plates 83b, 83c, 83d, and 83e rising from the top, bottom, left, and right of the bottom plate 83a, and is configured to surround the power system board 91 (see FIG. 7). A plurality of claws 83d1 for locking the lid 82 (see FIG. 6) are formed on the outer surface of the side plate 83d.

The cord storage part 84 is formed adjacent to the board storage part 83 and is formed to be long in the vertical direction. Further, the cord storage section 84 is provided with an openable and closable cord restraining lid 84d that can be closed after storing the cord 92a. A guide 84c for preventing the cord 92a from jumping out from the case body 81 is formed on the cord restraining lid 84d. Further, a plurality of claws 84d1 for locking the lid body 82 (see FIG. 6) are formed on the outer surface of the cord suppressing lid 84d.

Furthermore, a positioning portion 87a that is inserted into a hole (not shown) formed in the machine chamber bottom plate 70 (see FIG. 6) is formed on the lower surface of the side plate 83c of the case body 81 to protrude downward. Further, on the upper surface of the side plate 83b of the case body 81, a fixing portion 87b for fixing the case body 81 to the machine room 39 with screws is formed to protrude upward.

Further, on the upper surface of the side plate 83b of the case body 81, power cord holding parts 88a, 88a are formed to hold the power cord 92b (see FIG. 6) of the cords 92a. This power cord holding portion 88a is formed integrally with the side plate 83b, and guides the power cord 92b (see FIG. 6) so as to be in contact with the outer surface of the side plate 83b. Moreover, power cord holding parts 88b, 88b are formed on the side plate 83b to prevent the power cord 92b (see FIG. 6) from coming off from the power cord holding part 88a.

Further, a power cord guide portion 89 is formed on the upper surface of the side plate 83b of the case body 81 to guide the power cord 92b in a direction away from the case body 81. The power cord guide portion 89 includes an extending portion 89a that extends upward from the side plate 83b, and a holding portion 89b that holds the power cord 92b. Further, an elastic sealing material (not shown) is provided between the holding portion 89b and the back plate 10s. Thereby, it is possible to suppress water droplets from penetrating into the inside of the substrate storage section 83 along the power cord 92b.

Further, sloped portions 10s1 and 10s2 that are sloped (or concave) toward the front side of the refrigerator 1 are formed at both left and right ends of the back plate 10s (see FIGS. 3 and 4). At least a portion of the power cord guide portion 89 is located overlapping the inclined portion 10s1, so that even if the back plate 10s of the refrigerator 1 is installed in contact with the wall, there will be no gap between the back plate 10s and the wall. Therefore, damage to the power cord 92b can be suppressed.

FIG. 9 is a sectional view taken along line IX-IX in FIG.
As shown in FIG. 9, the reactor storage section 86 is formed to protrude forward with respect to the substrate storage section 83. The reactor 93 is configured so that the entire reactor 93 is hidden when the power system board 91 is stored in the board storage section 83.

The notch 85 is cut out in a U-shape in the side plate 83e of the board storage portion 83, and is formed with a concave surface facing rearward. Further, the cutout portion 85 is formed at the upper part of the side plate 83e, in other words, at the same height position as the reactor storage portion 86.

FIG. 10 is a perspective view showing the power system board storage case with the lid removed. Note that in FIG. 10, illustration of the cord 92a and the power cord 92b is omitted.
As shown in FIG. 10, the cord suppressing lid 84d is formed into a square plate shape and is configured to be openable and closable (rotatable) on the case body 81. As shown in FIG. Note that FIG. 10 shows a state in which the cord suppressing lid 84d is opened. By providing the cord suppressing lid 84d in this manner, the cord 92a can be easily stored in the cord storage section 84, and the stored cord 92a and power cord 92b can be prevented from flying out.

Further, a guide 84c is formed on the cord restraining lid 84d to lock the cord restraining lid 84d on the case body 81 side when the cord restraining lid 84d is closed. This guide 84c is configured to be locked in a locking hole 83e1 formed in the side plate 83e when the cord restraining lid 84d is closed.

Further, in the cord storage section 84, a storage section 84t (see FIG. 7) is formed in front of the notch 84a to store the cord 92a and the power cord 92b by folding them upward. Even if water droplets intrude into the inside of the cord storage part 84 along the power cord 92b, by folding the power cord 92b upward (cord trap structure), the water droplets will not enter into the inside of the board storage part 83. can be suppressed. Further, in order to discharge water droplets that have entered the inside of the cord storage section 84 to the outside, a drainage hole 84u is provided below the storage section 84t.

FIG. 11 is a perspective view showing a state in which the cord suppressing lid is closed from the state shown in FIG. 10.
As shown in FIG. 11, the case body 81 has an opening 84s formed in the upper part of the cord storage part 84, through which the cord 92a and the power cord 92b are pulled out. This opening 84s is located near the upstream side of the fan 19 (see FIG. 6), in other words, it is located on the air suction side.

A claw 84d1 for locking the lid body 82 is formed on the outer surface of the cord suppressing lid 84d. This claw 84d1 is inserted into the locking hole 82d (see FIG. 6) formed in the bent portion 82c (see FIG. 6) of the lid 82 (see FIG. 6), so that the lid 82 can be attached to the case body 81. It is configured to be locked.

Further, a ventilation plate 95 configured with a plurality of slit-shaped holes 95a is fixed to the machine room bottom plate 70 at a position facing the fan 19 (see FIG. 6) side of the case body 81. Air taken in from the intake port 10a2 (see FIG. 2) passes through the hole 95a of the ventilation plate 95 and the fan 19, and is blown to the compressor 24.

FIG. 12 is a view taken in the direction of arrow XII in FIG. 6.
As shown in FIG. 12, the other end (left end) of the lid body 82 is formed with a bent portion 82e that is bent toward the case body 81 side. A locking hole 82f into which a claw 83d1 formed on the case body 81 is locked is formed in the bent portion 82e.

Furthermore, ribs 82p and 82q are formed on the lid body 82 so as to protrude from the side closer to the fan 19. These ribs 82p and 82q are formed to extend in the vertical direction. Furthermore, a rib 82r is formed on the lid body 82 on the side opposite to the fan 19. This rib 82r is also formed to extend in the vertical direction.

FIG. 13 is a view taken in the direction of arrow XIII in FIG. 12.
As shown in FIG. 13, the board storage case 80 and the capacitor 61 are arranged at positions that do not overlap each other when viewed from the side of the refrigerator 1. That is, the capacitor 61 is located below the reactor storage section 86 of the substrate storage case 80.

Further, the reactor storage section 86 and the fan 19 located on the downstream side are arranged at positions overlapping each other when the refrigerator 1 is viewed from the side. Thereby, the wind from the fan 19 can be applied to the reactor storage section 86, and the reactor 93, which is a heat generating component, can be indirectly cooled.

FIG. 14 is a schematic cross-sectional view taken along line XIV-XIV in FIG.
As shown in FIG. 14, when the machine room cover 90 is attached to the back of the machine room 39, the ribs 82p and 82q formed on the lid 82 of the board storage case 80 come into contact with the inner wall surface 90a1 of the machine room cover 90. . Further, the rib 82r formed on the lid body 82 comes into contact with the inner wall surface 90b1 of the inclined plate portion 90b of the machine room cover 90. Thereby, a gap S is formed between the machine room cover 90 and the board storage case 80.

By the way, when the board storage case 80 is the board storage case 200 that does not include the inclined surface part 82b, the shape shown by the two-dot chain line in FIG. It will be placed. Therefore, the substrate storage case 80 is placed close to the compressor 24. As a result, the power system board 91 in the board storage case 80 becomes susceptible to the heat generated from the compressor 24, and the cooling performance of the power system board 91 is impaired. Therefore, in this embodiment, the shape of the board storage case 80 is made into an inclined surface part 82b that follows the inclined plate part 90b of the machine room cover 90, so that the board storage case 80 can be moved away from the compressor 24. The power system board 91 is less affected by the heat of the compressor 24. Furthermore, since the gap S between the board storage case 80 and the machine room cover 90 can be reduced, the dimension in the front-back direction of the capacitor 61 located on the rear projection plane of the board storage case 80 can be increased, and the capacitor 61 can improve heat dissipation performance.

FIG. 15 is a perspective view showing a modification of the power system board storage case. Note that the same components as those of the board storage case 80 described above are given the same reference numerals and redundant explanations will be omitted.
As shown in FIG. 15, the board storage case (power system board storage case) 80A includes a case body 81 and a lid body 82 that are integrally formed. By configuring the tip edge of the side plate 83d of the case body 81 and one side 82e of the lid body 82 to be bendable, the lid body 82 can be opened and closed with respect to the case body 81.

By integrally molding the case body 81 and the lid 82 in this manner, it is possible to reduce the risk of seal failure when the lid 82 is closed. Further, by integrating the case body 81 and the lid body 82 as described above, the sealing cost on only one side can be eliminated, so that the substrate storage case 80A can be downsized.

FIG. 16 is a front view showing the refrigerator compartment. Note that FIG. 16 shows a state in which the refrigerator compartment door 2a (see FIG. 1) is removed.
As shown in FIG. 16, the refrigerator compartment 2 includes a chilled compartment 2b and an ice-making water tank 2e arranged side by side in the left-right direction at the lowest stage. Although not shown, the refrigerator compartment 2 is provided with a pump behind the water supply tank 2e for supplying water to the ice making compartment 3 (see FIG. 1). Moreover, the refrigerator compartment 2 is provided with a shelf member 2c above the chilled compartment 2b and the water tank 2e. This shelf member 2c is screwed to the inner box 10b and the refrigerator compartment duct 11, and cannot be easily removed.

Moreover, the refrigerator compartment 2 is provided with a refrigerator compartment duct 11 extending in the vertical direction with a predetermined width on the back side of the shelf members 2c and 2d. A refrigerator compartment discharge port 11a (see FIG. 1) through which cold air is discharged is formed on the upper surface and left and right side surfaces of the refrigerator compartment duct 11.

FIG. 17 is a perspective view of the refrigerator compartment seen from the front. Note that FIG. 17 shows a state in which the refrigerator compartment duct 11, the shelf members 2c and 2d, the tray of the chilled compartment 2b, the ice making unit including the water supply tank 2e, and the decorative board 2f (see FIG. 16) shown in FIG. 16 have been removed. There is. Further, in FIG. 17, the cord (electric wire) connected to the control board 110 is not shown (the same applies to FIGS. 24 and 25).

As shown in FIG. 17, the refrigerator compartment 2 is provided with a control board storage case 120 that stores the control board 110 (master board, low power board). In other words, the control board storage case 120 is provided at a position that does not overlap the refrigerator compartment duct 11 in the front-rear direction.

The control board 110 is a board that supplies power to parts that operate on low power, such as an interior light (not shown), temperature sensors 40a, 40b, 41, 42, 43, dampers (not shown), and fans 9a, 9b, 19. It is. The control board 110 also includes an internal control microcomputer 110a (see FIG. 18) that receives signals from each sensor (not shown) and an operation panel (not shown) and performs various controls. In this way, the control board 110 receives signals from various sensors and centrally controls the refrigerator 1 (the member on which the box body 10 is provided).

FIG. 18 is a block diagram showing the configuration of the refrigerator.
As shown in FIG. 18, the power system board 91 operates the high voltage system compressor 24, defrosting heater 21, etc., and includes a compressor motor 24M, a heater element 21S, and a heater element 21S mounted on the compressor 24. Connected via electric wire (cord). The compressor motor 24M is connected to a commercial power source via a noise filter circuit 91a, a converter circuit (AC→DC) 91b, and an inverter circuit 91c. Furthermore, a reactor 93 is connected between the noise filter circuit 91a and the converter circuit 91b. The inverter circuit 91c and the converter circuit 91b are controlled by the compressor control microcomputer 91d in response to instructions from the internal control microcomputer 110a of the control board 110.

Further, the defrosting heater 21 is connected to a commercial power source via a noise filter circuit 91a and a heater circuit 91e. The heater circuit 91e is controlled by the heater microcomputer 91f in response to instructions from the internal control microcomputer 110a of the control board 110.

Further, the converter circuit 91b is connected to a switching power supply circuit 91g that converts high-voltage direct current to low-voltage direct current. High voltage DC power is supplied to the inverter circuit 91c. The low voltage DC power is supplied to the compressor control microcomputer 91d.

Further, the low voltage DC power is connected to the DC/DC conversion circuit 110b of the control board 110 via the cord 92a. The DC/DC conversion circuit 110b further converts the voltage into a lower voltage (for example, 12V→5V) direct current.

The internal control microcomputer 110a is connected to a motor 110M via a motor driver 110c. The motor 110M is a motor for various fans 9a, 9b, 19, dampers (not shown), valves (not shown), and the like. For example, 12V power is supplied to these motors 110M.

Further, the internal control microcomputer 110a is connected to an operation panel 110P. This operation panel 110P is installed in the refrigerator compartment 2, for example, and is used to adjust the temperature and strength inside the refrigerator. Further, the internal control microcomputer 110a is connected to a service terminal 110T via an EEPROM 110d. Past logs (driving conditions) are recorded in the EEPROM 110d. By connecting the service terminal 110T to a terminal (not shown) at the time of failure or maintenance, a service person can check the past operating conditions recorded in the RRPROM 110d.

Further, the internal control microcomputer 110a is connected to sensors 40 including temperature sensors. Further, the internal control microcomputer 110a appropriately controls the compressor motor 24M and the defrosting heater 21 based on the temperature information acquired from the sensors 40. Furthermore, the internal control microcomputer 110a is connected to each door switch. Furthermore, the internal control microcomputer 110a appropriately controls the compressor motor 24M and a buzzer (not shown) based on the opening/closing signal of the door switch.

In this way, the control board 110 acquires information from the sensors 40, etc., and controls the compressor 24 and defrost heater 21 connected to the power system board 91, as well as operation information from the operation panel 110P and the door SW. It acquires information and controls the high-voltage and constant-voltage devices inside the refrigerator. On the other hand, although the power system board 91 includes a compressor control microcomputer 91d and a heater microcomputer 91f, it does not control the entire operation of the refrigerator 1.

FIG. 19 is a perspective view of the control board storage case, FIG. 20 is a perspective view of the control board storage case with the lid of the cord storage section open, and FIG. 21 is a view of FIG. 20 viewed from the back side. FIG. Note that in FIGS. 19 to 21, illustration of the control board 110 is omitted.
As shown in FIG. 19, the control board storage case 120 has a board storage section 121 with an open front surface. Further, the control board storage case 120 has a code storage section 122 below the board storage section 121 in which a cord connected to the control board 110 is stored.

A fixing part 121a for fixing the control board storage case 120 to the inner box 10b (see FIG. 17) with screws is formed in the upper part of the board storage part 121. Further, in the substrate storage portion 121, locking claws 121b for locking the decorative board 2f (see FIG. 17) are formed at a plurality of locations on both the left and right sides.

As shown in FIG. 20, the cord storage section 122 includes a lid 122a that can be opened and closed. The lid 122a rotates by bending around its lower edge.

Further, the cord storage portion 122 is formed with a claw 122b that locks the lid 122a. A locking hole 122c that is locked by a claw 122b is formed in the lid 122a.

Further, the cord storage section 122 is provided with a guide member 122d for holding the cord within the cord storage section 122.

Further, the control board storage case 120 is formed with a communication part 123 that communicates the board storage part 121 and the code storage part 122. This communication portion 123 is located at the center in the left-right direction, and is configured such that the recessed portion faces forward.

As shown in FIG. 21, one or more (four in this embodiment) ribs 121c are formed on the back surface of the substrate storage section 121. This rib 121c is formed to extend from the left end to the right end, and is sloped downward from the left side to the right side. Moreover, each rib 121c is arranged at equal intervals in the vertical direction.

Further, on the back surface of the substrate storage section 121, a rib 121d extending in the vertical direction is formed at the right end of the rib 121c. This rib 121d is formed to extend from the lower end of the rib 121c located at the lowermost end to the lower end of the cord storage portion 122.

Further, an opening 122e communicating with the front side is formed on the back side of the cord storage section 122. A cord 92a extending from the power system board 91 (see FIG. 7) is taken into the cord storage portion 122 through this opening 122e.

FIG. 22 is a perspective view of the cord retracting member viewed from the front side, and FIG. 23 is a perspective view of the cord retracting member viewed from the rear side.
As shown in FIG. 22, the cord retracting member 125 is a member that holds the control board storage case 120 in the inner box 10b and pulls the cord 92a into the control board storage case 120. Further, the cord retracting member 125 includes a square plate-shaped base plate 125a and a square cylindrical fitting part 125b that projects forward from the base plate 125a and fits into the opening 122e of the cord storage section 122. It is configured as follows.

Moreover, a notch 125c into which the communicating part 123 (see FIG. 20) is inserted is formed in the upper part of the fitting part 125b in a concave shape. Further, a locking hole 125d is formed in the lower part of the fitting portion 125b, and is locked with a claw (not shown) formed in the cord storage portion 122.

As shown in FIG. 23, a plurality of cord lead-in holes 125e and 125f are formed in the base plate 125a. These cord lead-in holes 125e and 125f are formed by elongated holes extending in the left-right direction, and are vertically spaced apart from each other. Further, the cord lead-in holes 125e and 125f are formed in a cylindrical shape and protrude forward from the base plate 125a.

FIG. 24 is a perspective view of the refrigerator compartment viewed from the back. In addition, in FIG. 24, illustration of the refrigerator compartment side evaporator 14a is omitted.
As shown in FIG. 24, a refrigerant pipe 130 is embedded in the urethane of the box 10, through which the low-temperature refrigerant flows before being sucked into the compressor 24 after passing through the evaporators 14a and 14b. This refrigerant pipe 130 has a merging portion 130a where the refrigerant joins at a lower height position of the refrigerator compartment 2 (see FIG. 17). In this confluence section 130a, the refrigerant returns from the refrigerator compartment side evaporator 14a (see FIG. 2) to the compressor 24 (see FIG. 2), and the refrigerant returns from the freezer compartment side evaporator 14b (see FIG. 2) to the compressor 24 (see FIG. 2). ) is merged with the refrigerant returning to the A refrigerant pipe 130b returning to the compressor 24 is connected to the confluence section 130a. The refrigerant pipe 130b extends upward from the center in the width direction in the urethane on the back side of the refrigerator compartment 2, is folded back downward at the upper part, passes outside the control board storage case 120, and passes through the compressor in the machine room 39. It extends to 24.

The control board storage case 120 is held within the inner box 10b by a cord retracting member 125 attached from the urethane filling side. Furthermore, a sealing material 140 made of a water-impermeable material is attached to the tip of a rib 121c (see FIG. 21) formed on the back surface of the substrate storage section 121. This sealing material 140 is formed to have a predetermined width so that all the tips of the four ribs 121c come into contact with each other.

The cord in the refrigerator compartment 2 passes through the refrigerator compartment 2 (inside the refrigerator), is drawn into the control board storage case 120, and is connected to the control board 110 (see FIG. 17). The cord 29a of the machine room 39 first passes through the urethane between the outer box 10a and the inner box 10b, and is connected to the control board 110 in the control board storage case 120 through the cord lead-in holes 125e and 125f. Further, the cords of the vegetable compartment 6 and the freezer compartment 7 are appropriately bundled, passed through the urethane, and connected to the control board 110 in the control board storage case 120 through the cord lead-in holes 125e and 125f.

FIG. 25 is a sectional view taken along the line XXV-XXV in FIG. 17.
As shown in FIG. 25, the control board storage case 120 is held in the inner box 10b by fitting the fitting portion 125b of the cord retracting member 125 into the lower opening 122e. At this time, the cord retracting member 125 is inserted into the periphery of the base plate 125a by inserting the fitting part 125b into the fitting hole 10d formed in the inner box 10b from the urethane side (the side opposite to the refrigerator compartment 2). portion abuts against the peripheral edge of the fitting hole 10d of the inner box 10b. This causes the fitting portion 125b of the cord retracting member 125 to protrude into the refrigerator by a predetermined amount. Moreover, when the fitting part 125b is inserted into the cord storage part 122, the communication part 123 is located in the notch part 125c formed in the fitting part 125b.

Further, the control board storage case 120 is fixed to the inner box 10b by inserting a screw 127 into a fixing portion 121a at the upper end and screwing into a boss 126 provided on the inner box 10b. Note that, like the cord retracting member 125, the boss 126 is formed integrally with the base plate 126a. The boss 126 is attached to the inner box 10b by passing through the inner box 10b and having the base plate 126a abut against the inner wall surface of the inner box 10b.

Thereby, the control board storage case 120 is positioned and fixed to the inner box 10b. In this case, a space S1 is formed between the substrate storage section 121 and the inner box 10b, and this space S1 is configured as a heat insulating layer (air layer). Thereby, even if the control board storage case 120 is provided in a thin area where it is difficult to arrange a vacuum heat insulating material, the heat insulation properties can be ensured. As illustrated in FIG. 24, since the refrigerant pipe 130, which has a low temperature, is installed near the control board storage case 120, the control board storage case 120 is cooled by solid-state heat transfer through, for example, the inner box 10b. There is a risk of it getting lost. In this embodiment, since the board storage part 121 is arranged across the space S1, which is an air heat insulating layer, from the inner box 10b, it is possible to cool the control board 110 and the like and to suppress dew formation due to this.

Further, by fixing the control board storage case 120 to the inner box 10b, the sealing material 140 is sandwiched between the tip of the rib 121c and the inner box 10b.

By the way, the cooled refrigerant that has passed through the refrigerator compartment side evaporator 14a (see FIG. 2) and the freezer compartment side evaporator 14b (see FIG. 2) flows through the refrigerant pipe 130 (see FIG. 24). Since the refrigerant pipe 130 is also cold, when the cooled heat is transmitted to the inside of the refrigerator through the inner box 10b, condensation water is generated inside the refrigerator. It is necessary to prevent such condensed water from flowing through the inner box 10b and reaching the inside of the control board storage case 120. Therefore, by forming the ribs 121c in the substrate storage section 121 and making the substrate storage section 121 float above the inner box 10b, it is possible to suppress the condensed water from entering into the substrate storage section 121.

Furthermore, by forming the ribs 121c in the board storage part 121 and bringing them into contact with the inner box 10b through the sealing material 140, even if condensed water falls from above the control board storage case 120 through the inner box 10b, The condensed water hits the rib 121c, flows along the slope of the rib 121c, and can be dropped at a position outside the control board storage case 120 (refrigeration compartment side evaporator 14a).

In addition, by forming the space (gap) S1 between the board storage section 121 and the inner box 10b, the space S1 can be used as an air insulation layer, thereby suppressing dew condensation inside the board storage section 121. be able to.

FIG. 26 is a schematic cross-sectional view taken along line XXVI-XXVI in FIG. 17.
As shown in FIG. 26, the corners of the inner box 10b have obliquely cut inclined surfaces 10b1 to increase the amount of urethane filled in the corners. Thereby, even if the urethane layer becomes thinner, the strength of the box body 10 can be prevented from decreasing. However, when such an inclined surface 10b1 is formed, the control board storage case 120 can only be placed in the position shown by the two-dot chain line. Therefore, in the present embodiment, a notch 10b2 having a substantially triangular shape in plan view is formed in the inclined surface 10b1 of the area where the control board storage case 120 is arranged, so that the control board storage case 120 can be placed in the position shown by the solid line. can be placed. By being able to move the position of the control board storage case 120 outward in this way, the width W of the refrigerator compartment duct 11 can be increased, and it becomes possible to send cold air to a wide area of the refrigerator compartment 2.

As explained above, the refrigerator 1 of the present embodiment includes a box body 10 having a refrigerator compartment 2, a vegetable compartment 6, and a freezer compartment 7, a machine compartment 39 formed on the back side of the box body 10, and The compressor 24 and the fan 19 are arranged, and a power system board 91 is arranged in the machine room 39 and supplies power to the compressor 24. The power system board 91 is placed upstream of the fan 19 , and the compressor 24 is placed downstream of the fan 19 . According to this, by arranging the power system board 91 in the machine room 39 separately from the control board 110, an air path for cooling the compressor 24 can be secured. As a result, it becomes possible to efficiently cool the compressor 24 without enlarging the machine room 39.

Further, this embodiment includes a control board 110 that is arranged outside the machine room 30 and controls the box 10, and the outside of the machine room 39 is the refrigerating room 2 (storage room, refrigerating temperature range room). According to this, the occurrence of freezing can be prevented and the occurrence of dew condensation can be suppressed more than when the control board 110 is arranged in the freezing chamber 7 (freezing temperature range room).

Further, in this embodiment, a power system board 91 is arranged in the machine room 39, and a control board 110 is arranged in the refrigerator compartment 2. As a result, the total length of the necessary cords (wires) is reduced compared to the conventional case where a single board (power board + control board) is placed on the ceiling of the box 10 (refrigerator body). The extension can be shortened.

Furthermore, in this embodiment, the box body 10 includes a suction port 10a2 on one side of the machine room 39, and a discharge port 10a4 on the other side of the machine room 39. According to this, since the air passage is formed linearly, the compressor 24 can be cooled more efficiently than when the air passage is formed curved.

Further, this embodiment includes a power system board storage case 80 that stores the power system board 91 and the reactor 93. The reactor 93 and the fan 19 are arranged at positions overlapping each other when the refrigerator 1 is viewed from the side. According to this, the reactor 93, which is a heat generating component, can be cooled by the wind from the fan 19.

Further, this embodiment includes a board storage case 80 that stores a power system board 91, and the board storage case 80 includes an opening 84s from which a cord 92 connected to the power system board 91 and a power cord 92b are pulled out. The board storage case 80 has an opening 84s located on the side where the fan 19 is disposed. According to this, since the opening 84s is located on the suction side of the fan 19, it becomes difficult for dust to enter the opening 84s.

Further, this embodiment includes a machine room cover 90 that covers the back surface of the machine room 39 and has an inclined plate portion 90b at an end thereof that is inclined toward the machine room 39 side. The substrate storage case 80 includes a case body 81 having an opening 81a on the back side, and a lid body 82 for opening and closing the case body 81. At least a portion of the lid 82 faces the inclined plate portion 90b when the refrigerator 1 is viewed from the rear. According to this, the board storage case 80 can be placed close to the end of the machine room 39, and the power system board 91 can be placed away from the compressor 24. As a result, the cooling performance of the power system board 91 inside the board storage case 80 can be improved.

Further, in this embodiment, the lid body 82 has an inclined surface portion 82b formed along the inclined plate portion 90b. According to this, by installing the lid body 82 along the inclined plate part 90b, the board storage case 80 can be placed closer to the end of the machine room 39 and closer to the machine room cover 90.

Further, in this embodiment, the power cord 92b is fixed to the board storage case 80. By the way, when the power cord is fixed to the sheet metal of the refrigerator body (box 10) as in the past, there is a risk that the length of the power cord from the fixed part to the board may vary due to misalignment between the board and the fixed part. be. On the other hand, by fixing the power cord 92b to the board storage case 80, the length of the power cord 92b from the fixing part (power cord holding part 88a, power cord holding part 88b) to the control board 110 can be kept constant. be able to. Furthermore, in this embodiment, the power cord 92b can also be removed by simply removing the board storage case 80, improving work efficiency.

Further, this embodiment includes a control board storage case 120 that accommodates the control board 110, and the control board storage case 120 is located on the rear side of the shelf member 2c fixed to the refrigerator compartment 2, as illustrated in FIG. The control board 110 is located above the shelf member 2c. According to this, since the control board 110 can be accessed without removing the screws etc. that fix the shelf member 2c, the accessibility to the control board 110 can be improved. Since the control board storage case 120 is fixed by the fixed shelf member 2c, access by anyone other than the maintenance person can be restricted. The back of the shelf member 2c or the chilled case below this is difficult or impossible for the user to access, and wiring or the like can be provided here.

Further, in this embodiment, the control board storage case 120 is arranged apart from the inner box 10b of the box body 10. According to this, it is possible to suppress the condensed water flowing along the surface of the inner box 10b from entering the control board storage case 120.

Furthermore, in the present embodiment, the control board storage case 120 has ribs 121c extending in the width direction and slanting on the surface facing the inner box 10b. According to this, the condensed water that has come into contact with the rib 121c can be released to a position away from the control board storage case 120.

Moreover, in this embodiment, the rib 121c is inclined downward toward the refrigerator compartment side evaporator 14a. According to this, the condensed water that has fallen from the rib 121c can be discharged using the toy of the refrigerator compartment side evaporator 14a.

Further, in this embodiment, the tip of the rib 121c is in contact with the inner box 10b via the sealing material 140. According to this, the condensed water can escape to a position away from the control board storage case 120 without falling through the gap between the rib 121c and the inner box 10b.

Moreover, in this embodiment, the ribs 121c are configured by arranging a plurality of ribs in a row. Since the control board storage case 120 does not come into contact with the inner box 10b, dew condensation inside the control board storage case 120 can be suppressed.

Furthermore, this embodiment includes a connecting portion P that connects the compressor side pipe 24a extending from the compressor 24 and the condenser side pipe 61a extending from the condenser 61 in the machine room 39. The connecting portion P is provided at a position that does not overlap with the power system board storage case 80 on the projection plane from the rear. According to this, the accessibility to the connection part P is improved and confirmation at the connection part P becomes easy.

Although the present embodiment has been described above with reference to the drawings, the present embodiment is not limited to the above content at all, and includes various modifications. In the embodiment described above, the case where the control board 110 is provided in the refrigerator compartment 2 has been described as an example, but the control board 110 may be arranged in the freezing compartment 7 outside the machine room 39.

Further, in the above-described embodiment, the refrigerator 1 is provided with the refrigerator compartment side evaporator 14a. It may also be a refrigerator installed in the

1 Refrigerator 2 Refrigerated room (storage room, outside of machine room, refrigerated temperature range room)
2c Shelf member 7 Freezer compartment 9a Refrigerator compartment fan 9b Freezer compartment fan 10 Box (refrigerator body)
10a Outer box 10a2 Suction port 10a4 Outlet port 10b Inner box 10b1 Inclined surface 10b2 Notch recess 11 Refrigerator compartment duct 14a Refrigerator compartment side evaporator 14b Freezer compartment side evaporator 19 Fan (blower)
21 Defrosting heater 24 Compressor 39 Machine room 61 Capacitor 80,80A Power system board storage case 81 Case body 82 Lid body 82a Plate surface part 82b Inclined surface part 83 Board storage part 84 Cord storage part 84s Opening (opening for electric wire)
85 Notch portion 86 Reactor storage portion 88a Power cord holding portion 88b Power cord holding portion 89 Power cord guide portion 90 Machine room cover 90a Plate portion 90a1 Inner wall surface 90b Inclined plate portion 90b1 Inner wall surface 91 Power system board 92a Cord (electric wire)
92b Power cord (power line)
93 Reactor 110 Control board 120 Control board storage case 121 Board storage part 121c Rib 125 Cord retraction member 125a Base plate 122 Cord storage part 130 Refrigerant pipe 140 Sealing material P Connection part

Claims (7)

A refrigerator body having multiple storage chambers;
a machine room provided on the back side of the refrigerator main body;
a compressor and a blower arranged inside the machine room;
a power system board disposed in the machine room and supplying power to the compressor;
a power system board storage case that stores the power system board and the reactor;
Equipped with
The power system board storage case has a board storage part that stores the power system board, and a reactor storage part that stores the reactor,
The reactor storage section is formed to protrude forward with respect to the substrate storage section,
The power system board is arranged upstream of the blower,
The compressor is arranged downstream of the blower ,
The reactor storage section and the blower are arranged at positions overlapping each other in a side view of the refrigerator,
The power system board storage case and the condenser that condenses the refrigerant discharged from the compressor are arranged at positions that do not overlap each other in a side view of the refrigerator, and the condenser is located below the reactor storage section. Refrigerator characterized by being located . The refrigerator according to claim 1,
a control board disposed outside the machine room to control the refrigerator main body;
A refrigerator characterized in that the outside of the machine room is a refrigerating temperature range room serving as the storage room. In the refrigerator according to claim 1 or claim 2,
The refrigerator body is characterized in that the refrigerator main body includes an inlet on one side of the machine room and an outlet on the other side of the machine room. The refrigerator according to any one of claims 1 to 3 ,
A power system board storage case for storing the power system board,
The power system board storage case includes an electric wire opening through which electric wires connected to the power system board are pulled out,
The refrigerator is characterized in that the power system board storage case has the electric wire opening located on the side where the blower is disposed. The refrigerator according to claim 4 ,
a machine room cover that covers the back surface of the machine room and has an inclined plate portion at an end thereof that slopes toward the machine room side;
The power system board storage case includes a case body having an opening on the back side, and a lid body for opening and closing the case body,
A refrigerator, wherein at least a portion of the lid faces the inclined plate portion when viewed from the rear of the refrigerator. The refrigerator according to claim 5 ,
The refrigerator is characterized in that the lid has an inclined surface portion that extends along the inclined plate portion. The refrigerator according to any one of claims 4 to 6 ,
A refrigerator characterized in that a power line of the electric wires is fixed to the power system board storage case.

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