CN113686076A

CN113686076A - Refrigerator with a door

Info

Publication number: CN113686076A
Application number: CN202110234595.7A
Authority: CN
Inventors: 早川隆人; 坪川充央; 秋吉浩一
Original assignee: Toshiba Lifestyle Products and Services Corp
Current assignee: Toshiba Lifestyle Products and Services Corp
Priority date: 2020-05-18
Filing date: 2021-03-03
Publication date: 2021-11-23
Anticipated expiration: 2041-03-03
Also published as: JP7481162B2; JP2021181847A

Abstract

The invention relates to a refrigerator, which can ensure the space for setting the substrate receiving part for receiving the control substrate without damaging the heat insulation performance and the beauty of the inner part of a storeroom. The refrigerator of the present invention comprises: a substrate storage section (60) that is provided in a concave shape recessed forward from the upper end of the rear surface of the refrigerator main body (2); and a control substrate (70) and an electrical component (71) which are provided inside the substrate housing section (60), wherein the inner box back surface (4e) of the inner box (4) is provided with an inner box inclined surface (4e2) which is inclined forward as the upper end portion approaches upward, the substrate housing section (60) is provided with a housing section bottom surface (61) which is arranged in front of and behind the inner box inclined surface (4e2), and the housing section bottom surface (61) is provided with a substrate mounting surface (61a) on which the control substrate (70) is mounted, and a component mounting surface (61b) which is provided above the substrate mounting surface (61a) and on which the electrical component (71) is mounted.

Description

Refrigerator with a door

Technical Field

Embodiments of the present invention relate to a refrigerator.

Background

A refrigerator is known in which a control board constituting a control device of the refrigerator is mounted on a board housing portion provided on a rear surface and an upper surface of a refrigerator main body so as to be recessed toward a heat insulation space (see patent document 1 below).

In such a refrigerator, in order to prevent dew condensation from occurring inside the board storage portion, it is necessary to ensure heat insulation performance between the board storage portion and the storage chamber, and a convex portion corresponding to the board storage portion may appear on the back surface or the upper surface of the storage chamber, thereby impairing the appearance inside the storage chamber.

Documents of the prior art

Patent document

Patent document 1: japanese laid-open patent publication No. 2013-80610

Disclosure of Invention

In view of the above, it is an object of the present invention to provide a refrigerator that can secure a space for installing a board storage portion for storing a control board without impairing heat insulation performance and appearance inside a storage room.

The refrigerator of an embodiment is provided with: a refrigerator main body having an inner box provided with a storage chamber having a front opening therein, an outer box disposed outside the inner box, and a heat insulating material accommodated in a heat insulating space provided between the inner box and the outer box; a substrate receiving portion provided in a concave shape recessed forward from an upper end portion of a rear surface of the refrigerator main body; a control substrate disposed inside the substrate receiving portion; and an electric component which is provided inside the board housing section and connected to the control board, wherein the back surface of the inner box has an inner box inclined surface which is inclined forward as the upper end portion thereof is inclined upward, the board housing section has a housing section bottom surface which is opposed to the inner box inclined surface in the front-rear direction, and the housing section bottom surface has a board mounting surface on which the control board is mounted, and a component mounting surface which is provided above the board mounting surface and on which the electric component is mounted.

Effects of the invention

According to the present invention, a space for accommodating the control board can be ensured while maintaining the heat insulating performance and the appearance of the interior of the storage room.

Drawings

Fig. 1 is a longitudinal sectional view showing a schematic configuration of a refrigerator according to an embodiment of the present invention.

Fig. 2 is a front view of the refrigerator with a door omitted.

Fig. 3 is a sectional view taken along line a-a of fig. 1.

Fig. 4 is a perspective view of the rear wall panel.

Fig. 5 is a rear view of the rear wall panel.

Fig. 6 is an enlarged view of a main portion of fig. 1.

Fig. 7 is an exploded perspective view of the upper portion of the refrigerator as viewed from the rear.

Fig. 8 is a rear view of the upper portion of the refrigerator with the cover omitted.

Fig. 9 is an enlarged view of a main portion of fig. 2.

Fig. 10 is an enlarged view of a main portion of fig. 3.

Fig. 11 is an enlarged view of a main portion of fig. 3.

Description of reference numerals

1 … … refrigerator, 2 … … refrigerator body, 3 … … outer box, 4 … … inner box, 4a … … inner box left side face, 4b … … inner box right side face, 4c … … inner box upper face, 4d … … inner box bottom face, 4e … … inner box back face, 4e … … inner box vertical face, 4e … … inner box inclined face, 4e … … joining face, 4f … … joining portion, 4g … … stepped portion, 4g … … curved face, 4g … … flat face, 4h … … concave forming portion, 4h … … backward extending portion, 4h … … inclined portion, 4i … … inner box engaging portion, 6 … …, 6b … … lower portion, 6c … … upper side, 21 … … cooler, 24 … … cold storage side flow path portion, 24b … … first flow path portion, 24c … … second flow path portion, 3635 handle portion, 3636 cold storage chamber … … temperature sensor, 3638 cold storage chamber … … operating cabinet panel 3639, 40 … … rear wall member, 41 … … rear wall plate, 41a … … vertical surface, 41a1 … … vertical surface upper portion, 41b … … inclined surface, 41c … … connection surface, 41d … … narrow width portion, 42 … … flow path forming member, 42a … … rear end surface, 50 … … locking piece, 52a … … 1 st projection, 52b … … 2 nd projection, 56 … … through hole, 60 … … substrate storage portion, 61 … … storage portion bottom surface, 61a … … substrate mounting surface, 61b … … component mounting surface, 62 … … 1 st insertion hole, 63 … … 2 nd insertion hole, 64 … … cover body, 65 … … fixing member, 70 … … control substrate, 71 … … electric component, 72 … … mounting component, 72a … … high component, 74a … … 1 st substrate wire, 74b … … nd substrate wire, 75a … … device wire, 75b … … device wire, 75c … … device wire, 75d … … device lead.

Detailed Description

Hereinafter, a refrigerator 1 according to an embodiment of the present invention will be described with reference to the drawings. The following embodiments are illustrative, and the scope of the invention is not limited thereto. Various omissions, substitutions, and changes may be made in the following embodiments without departing from the spirit of the invention. The following embodiments and modifications thereof are included in the invention described in the claims and the equivalent scope thereof.

In the following description, the left-right direction, the front-back direction, and the up-down direction refer to directions when the refrigerator is viewed from the front, and the left-right direction corresponds to the width direction of the refrigerator. The right, left, upper, lower, back, front, and rear represent positions or sides when the refrigerator is viewed from the front, and the like, unless otherwise specified. In the inner box 4 of the refrigerator 1, a side facing the storage room is an inner side, and a side facing the outer box 3 with a heat insulating material interposed therebetween is a heat insulating space side.

(1) Refrigerator 1 constitution

The structure of the refrigerator 1 will be explained with reference to the drawings. As shown in fig. 1 to 3, the refrigerator 1 includes a refrigerator main body 2 having an opening in the front. The refrigerator main body 2 includes an outer box 3 made of a steel plate and an inner box 4 made of a synthetic resin, and a heat insulating space 5 for accommodating a heat insulating material such as a foam heat insulating material or a vacuum heat insulating panel is formed between the outer box 3 and the inner box 4. The refrigerator main body 2 is provided with a plurality of storage compartments inside the inner box 4. Specifically, as shown in fig. 1, a refrigerating chamber 6 and a vegetable chamber 7 are provided in this order from the upper layer, and a freezing chamber 10 is provided below.

Refrigerating room 6 and vegetable room 7 are storage rooms cooled to a refrigerating temperature range (for example, 1 to 4 ℃) based on the temperature detected by refrigerating room temperature sensor 36 provided at the rear side thereof. The refrigerating chamber 6 and the vegetable chamber 7 are vertically partitioned by a partition plate 11 made of synthetic resin, and air in the refrigerating chamber 6 flows into the vegetable chamber 7 through a communication hole 17 provided at a rear end portion of the partition plate 11. A rotary heat insulating door 6a pivotally supported by a hinge is provided at a front opening of the refrigerating compartment 6.

The rear surface of the refrigerating compartment 6 is partitioned by a rear wall member 40 provided at a distance in front of the inner compartment rear surface 4 e. Between the rear wall member 40 and the inner box back surface 4e, a1 st flow path portion 24b and a2 nd flow path portion 24c are formed which constitute a part of the refrigerating side flow path 24 through which the cold air supplied to the refrigerating chamber 6 flows. Further, operation panel 39 on which a user sets various settings such as temperature of refrigerating compartment 6, freezing compartment 10, and the like, and refrigerating compartment temperature sensor 36 for detecting the temperature in refrigerating compartment 6 are provided in rear wall member 40.

A plurality of shelves 12 are provided at a vertical interval in the internal space of the refrigerating chamber 6. A lower storage chamber 6b for storing a pull-out type container such as the water supply tank 30 or the storage container 14 is formed in a space vertically partitioned by the partition plate 11 and the lowermost shelf 12a, and an upper storage chamber 6c in which the shelf 12 is provided is formed in a space partitioned above the lowermost shelf 12 a.

The lower storage chamber 6b is partitioned in the refrigerator width direction by a vertical partition wall 13 disposed close to one side wall (left side wall) of the refrigerating chamber 6 (see fig. 3). A water supply tank 30 and a water supply device 31 are provided in a space between the left side wall of refrigerating room 6 and vertical partition wall 13. The water supply tank 30 is a drawer-type container that is stored at a predetermined position in the front-rear direction by a positioning portion, not shown, provided on the partition plate 11.

A drawer type storage container 14 is stored in a space between the vertical partition wall 13 and the other side wall (right side wall) of the refrigerating chamber 6. As shown in fig. 3, the vertical partition wall 13 is disposed behind the front portion of the storage container 14 so as to be shielded.

In the lower storage chamber 6b, a rear wall member 40 and a cabinet 38, which will be described later, disposed at the rear thereof are shielded from the front by the water supply tank 30 and the storage container 14.

The upper storage compartment 6c is a storage compartment disposed at the uppermost layer in the refrigerator 1, and the rear wall panel 41 of the rear wall member 40 disposed at the rear portion of the upper storage compartment 6c is exposed and visible from the front in a state where stored articles are not stored.

The shelf 12a at the lowermost layer may be fixed to the left and

right side surfaces

4a, 4b of the inner box 4, or may be detachably attached to the left and

right side surfaces

4a, 4b of the inner box 4.

An illumination storage recess 8 recessed upward (heat insulation space side) from the inside of the refrigerator is formed in a ceiling wall of the refrigerator main body 2 forming a top surface of the refrigerating chamber 6, and an illumination device 80 illuminating the inside of the refrigerating chamber 6 is stored in the illumination storage recess 8.

A pull-out type heat insulating door 7a is provided at a front opening of the vegetable compartment 7. A storage container 15 constituting a storage container is connected to a rear surface portion of the heat insulating door 7a, and the storage container 15 is configured to be pulled out of the box together with the door opening operation.

Freezer compartment 10 is a storage compartment cooled to a freezing temperature zone (e.g., -10 to-20 ℃) based on the temperature detected by freezer compartment temperature sensor 37 provided behind it. Vegetable compartment 7 and freezing compartment 10 are vertically partitioned by a heat-insulating partition wall 16 having a heat insulator provided therein. A pull-out type heat insulating door 10a is provided at a front opening of the freezing chamber 10.

As shown in fig. 1, 3 storage containers each including a lower container 100, an intermediate container 101, and an upper container 102 are arranged in a vertical row in the freezing chamber 10. The lower container 100 is connected to the rear surface of the heat insulating door 10a, and the lower container 100 and the middle container 101 supported by the upper surface of the lower container 100 are drawn out of the box together with the door opening operation.

An ice making device 105 including an ice making tray and an ice separating mechanism is provided above the upper container 102, and ice made by the ice making device 105 falls down to the upper container 102 and is stored in the upper container 102. The ice making device 105 constitutes an automatic ice making device together with the water supply tank 30 and the water supply device 31 provided in the refrigerating compartment 6, and water of the water supply tank 30 sucked up by the water supply device 31 is supplied to the ice making tray.

A cooler chamber 23 is provided inside the freezing chamber 10, and the cooler chamber 23 houses a cooler 21 that generates cold air for cooling the

storage chambers

6, 7, and 10, and a cooler fan 22. The cooler chamber 23 is connected with: a refrigerating side flow path 24 for supplying the cold air generated by the cooler 21 to the refrigerating chamber 6; a freezing-side flow path 26 for supplying the cold air generated by cooler 21 to freezing chamber 10; and a return duct 19 for returning the air flowing through the

storage chambers

6, 7, and 10 to the cooler chamber 23. A refrigerating baffle 25 is provided at a connection portion between the cooler chamber 23 and the refrigerating side flow path 24, and a freezing baffle 27 is provided at a connection portion between the cooler chamber 23 and the freezing side flow path 26.

The refrigerating side flow path 24 is formed by connecting a vegetable compartment flow path 24a provided behind the vegetable compartment 7, and a1 st flow path portion 24b and a2 nd flow path portion 24c provided behind the refrigerating compartment 6 in this order from below.

The vegetable compartment flow path 24a is disposed such that the center in the width direction thereof is closer to one side (the right side in the present embodiment) in the width direction than the center in the width direction of the vegetable compartment 7. The vegetable chamber flow path 24a has a wider flow path width as it goes upward from the refrigerating damper 25, and is connected to the lower end of the 1 st flow path portion 24 b.

The 1 st flow path portion 24b extends upward from the lower end of the lower storage chamber 6b to a position above the shelf 12a of the lowermost layer, and is provided behind the lower storage chamber 6b and behind the lower portion of the upper storage chamber 6 c. The 1 st flow path portion 24b is disposed on one side (in the present embodiment, the right side) in the width direction with respect to the center in the width direction of the refrigerating compartment 6.

The upper end of the 1 st flow path portion 24b is connected to the 2 nd flow path portion 24c via an inclined portion 24d inclined inward in the width direction (in the present embodiment, leftward) with respect to the vertical direction. The 2 nd flow path portion 24c is disposed such that the widthwise center thereof is closer to the widthwise center of the refrigerating compartment 6 than the widthwise center of the 1 st flow path portion 24 b.

A blowout port 18b that opens into the lower storage chamber 6b is provided on the front surface of the 1 st flow path portion 24b, and a blowout port 18c that opens into the upper storage chamber 6c is provided on the front surface of the 2 nd flow path portion 24 c.

The cooler 21 constitutes a refrigeration cycle together with a compressor 29 and a condenser housed in a machine chamber 28 formed in a lower portion of the rear surface of the refrigerator main body 2, and is cooled by a refrigerant discharged from the compressor 29. The cooler 21 cools air in the cooler room 23 to generate cold air for cooling the

storage rooms

6, 7, and 10.

As shown in fig. 6 to 8, a substrate housing portion 60 recessed forward is provided on the upper portion of the rear surface of the refrigerator main body 2, and a control substrate 70 for controlling the refrigerator 1 and an electric component 71 such as a reactor are provided inside the substrate housing portion.

The control board 70 controls the entire operation of the refrigerator 1 by controlling the opening and closing of the cold storage damper 25 and the freezing damper 27, the rotation speed of the cooler fan 22, and the operation frequency of the compressor 29 based on detection signals input from the

various sensors

36 and 37 and the operation panel 39 and a control program stored in a memory in advance.

In refrigerator 1 having such a configuration, by controlling the rotation of cooler fan 22 and the opening and closing of refrigerating damper 25 and freezing damper 27, cold air generated by cooler 21 is supplied to refrigerating room 6, vegetable room 7, and freezing room 10 in a switched manner, and thereby each of refrigerating

rooms

6, 7, and 10 can be cooled so that the temperatures detected by refrigerating room temperature sensor 36 and freezing room temperature sensor 37 satisfy predetermined temperature conditions.

Specifically, when refrigerating room 6 and vegetable room 7 are cooled, compressor 29 is driven to lower the temperature of cooler 21, and cooler fan 22 is driven with refrigerating damper 25 opened and freezing damper 27 closed. Thus, the air cooled by cooler 21 flows upward through vegetable

compartment flow path

24a, 1 st flow path portion 24b,

inclined portion

24d, and 2 nd flow path portion 24c, and is supplied from blow-out

ports

18b and 18c to refrigerating compartment 6, thereby cooling refrigerating compartment 6. The air flowing through refrigerating room 6 flows into vegetable room 7 through communication hole 17 provided in partition plate 11, cools the inside of vegetable room 7, is taken into return duct 19 through suction port 19a provided in the rear surface of vegetable room 7, returns to cooler room 23, and exchanges heat with cooler 21 again to be cooled.

When cooling freezer compartment 10, compressor 29 is driven to lower the temperature of cooler 21, and cooler fan 22 is driven with freezer flap 27 opened and refrigerator flap 25 closed. Thus, the air cooled by cooler 21 is supplied from blow-out port 34 to freezing chamber 10 via freezing-side flow path 26, and cools freezing chamber 10. The air flowing through the freezing chamber 10 is taken into the return duct 19 through the suction port 19b provided in the rear surface of the freezing chamber 10, returned to the cooler chamber 23, and cooled again by heat exchange with the cooler 21.

(2) Refrigerator main body 2

Next, the structure of the refrigerator main body 2 will be explained.

The inner box 4 is formed of a synthetic resin molded body integrally molded by a vacuum molding machine, has a box shape, has an inner box left side surface 4a, an inner box right side surface 4b, an inner box upper surface 4c, an inner box bottom surface 4d, and an inner box back surface 4e, and has an open front surface.

As shown in fig. 1 and 6, a portion of the inner box back surface 4e located rearward of the refrigerating compartment 6 is configured to have a larger inclination with respect to the vertical direction as the portion goes upward. In the present embodiment, the inner box back surface 4e includes: inner box vertical surface 4e1 extending from the lower end of refrigerating chamber 6 in parallel with the vertical direction; an inner box inclined surface 4e2 provided above the inner box vertical surface 4e1 and inclined forward as it goes upward; and an inner box connecting surface 4e3 for smoothly connecting the inner box vertical surface 4e1 and the inner box inclined surface 4e 2.

Further, the surface whose inclination with respect to the vertical direction is larger as it goes upward is not limited to the surface in which the inner box vertical surface and the 1 inner box inclined surface are connected as described above, and for example, a surface in which a plurality of inner box inclined surfaces having different inclinations with respect to the vertical direction and the inner box vertical surface are connected in a vertically aligned manner such that the inclination with respect to the vertical direction is larger as it goes upward; a surface in which a plurality of inner box inclined surfaces having different inclinations with respect to the vertical direction are vertically arranged and connected in such a manner that the inclination with respect to the vertical direction is larger as the inner box inclined surfaces go upward without providing an inner box vertical surface; a surface that is gradually curved so that the inclination with respect to the vertical direction increases as the surface goes upward. In the above-described embodiment, the inner box vertical surface and the inner box inclined surface are smoothly connected to each other via the inner box connecting surface, but the inner box vertical surface and the inner box inclined surface may be directly connected to each other without any other member or inclined surfaces having different inclinations with respect to the vertical direction may be directly connected to each other without any connecting surface.

The portions of the inner-casing left side surface 4a, the inner-casing right side surface 4b, and the inner-casing upper surface 4c that divide the upper storage compartment 6c are coupled to the inner-casing rear surface 4e via the coupling portion 4 f. In the present embodiment, the inner-box left side surface 4a, the inner-box right side surface 4b, and the inner-box upper surface 4c that divide the upper storage compartment 6c are forward-extending surfaces that extend forward from the left and right side ends and the upper end of the inner-box rear surface 4e via the coupling portion 4 f.

As shown in fig. 3, 6, 10, and 11, the coupling portion 4f includes: a step 4g connected to the rear ends of the front extension faces 4a, 4b, 4 c; and a concave portion 4h provided at the rear end of the stepped portion 4g, and the connecting portion 4f forms a stepped concave portion in the back of the inner box 4 together with the inner box back surface 4 e.

The step portion 4g includes: a curved surface 4g1 connected to the rear ends of the

front surfaces

4a, 4b, 4 c; and a flat surface 4g2 extending in a rearward direction from a rear end of the curved surface 4g 1. The curved surface 4g1 is a curved surface that expands rearward so as to be located more inward of the upper storage chamber 6c as it goes rearward. The curved surface 4g1 has a common tangent line at the connecting portion with the front extension surfaces 4a, 4b, 4c, and is smoothly connected with the front extension surfaces 4a, 4b, 4 c. The flat surface 4g2 is a flat surface extending in the tangential direction from the rear end of the curved surface 4g1, and the concave portion 4h is connected to the rear end thereof.

The concave portion 4h includes: a rear extension portion 4h1 bent rearward from the rear end of the flat surface 4g2 and extending rearward; and an inclined portion 4h2 that is inclined from the rear end of the rearward extending portion 4h1 to the inside in the width direction as the rear goes toward the rear.

As shown in fig. 3 and 11, the concave portion 4h is provided with a plurality of inner box engagement portions 4i that engage with the locking pieces 50 provided on the rear surface peripheral edge portion of the rear wall plate 41 of the rear wall member 40 at intervals.

In the present embodiment, the length of the concave portion 4h in the front-rear direction is set shorter than the length of the stepped portion 4g in the front-rear direction. Further, an angle θ h of the inclined portion 4h2 with respect to the front-rear direction concave forming portion 4h is smaller than an angle θ g of the flat surface 4g2 with respect to the front-rear direction stepped portion 4g, and the inclined portion 4h2 extends in the direction along the front-rear direction than the flat surface 4g2 (see fig. 10).

The steel plate outer box 3 constituting the outline of the refrigerator main body 2 is box-shaped, and has an outer box left side surface 3a, an outer box right side surface 3b, an outer box upper surface 3c, an outer box bottom surface 3d, and an outer box back surface 3e opposed to the inner box left side surface 4a, the inner box right side surface 4b, the inner box upper surface 4c, the inner box bottom surface 4d, and the inner box back surface 4e of the inner box 4, respectively, and an open front surface. The outer box left side surface 3a, the outer box right side surface 3b, and the outer box upper surface 3c are formed by bending a long steel plate into a substantially U-shape. The outer box bottom surface 3d and the outer box back surface 3e are members provided separately from the outer box left side surface 3a, the outer box right side surface 3b, and the outer box upper surface 3 c. A step portion for forming the machine chamber 28 is formed by bending the outer box bottom surface 3 d.

As shown in fig. 7 to 8, a pair of left and right grip portions 35 are provided at left and right upper ends of the outer case back surface 3 e. The left and right grip portions 35 each include: a hollow part 35a recessed forward from the outer box back surface 3 e; and a grip portion 35b having an upper surface opening communicating with the hollow portion 35 a. In a rear view as shown in fig. 8, the hollow portion 35a is formed with a relief portion 35c recessed outward in the width direction at a lower corner portion on the inner side in the width direction of the refrigerator 1. Further, a board housing portion 60 for housing the control board 70 and the electric components 71 is provided between the left and right grip portions 35 at the upper end portion of the outer case back surface 3 e.

(3) Substrate receiving part 60

Next, the structure of the substrate storage section 60 will be described mainly with reference to fig. 6 to 8. The substrate accommodating portion 60 has a front-rear flat plate shape with a rear opening. The substrate storage section 60 is disposed behind the inner box inclined surface 4e2 such that the storage section bottom surface 61 constituting the bottom surface thereof faces the inner box inclined surface 4e2 in the front-rear direction with a heat insulating material interposed therebetween.

Specifically, as shown in fig. 7 and 8, the storage section bottom surface 61 includes: a substrate mounting surface 61a provided on the lower side and having a substantially rectangular rear view; and a component mounting surface 61b provided on the upper side of the substrate mounting surface 61 a. The member attachment surface 61b is provided between the pair of right and left grip portions 35 so as to overlap the pair of right and left grip portions 35 in the right-left direction, and has a shape that is narrower as the width increases toward the upper side.

As shown in fig. 6, the board storage section 60 is provided on the outer box back surface 3e such that the lower end of the storage section bottom surface 61 (the lower end of the board mounting surface 61a) is located above the lower end of the inner box inclined surface 4e2 (the connection portion with the inner box connection surface 4e 3).

The board mounting surface 61a is configured as a housing inclined surface inclined forward as the board mounting surface goes upward, similarly to the inner box inclined surface 4e2 located forward. The component mounting surface 61b is an extended surface extending in parallel to the vertical direction from the upper end of the substrate mounting surface 61a, and is provided forward of the substrate mounting surface 61 a.

In the present embodiment, the inclination angle θ 1 of the board mounting surface 61a with respect to the vertical direction is set smaller than the inclination angle θ 2 of the inner box inclined surface 4e2 with respect to the vertical direction. The inclination angle θ 1 of the board mounting surface 61a is not limited to be set smaller than the inclination angle θ 2 of the inner box inclined surface 4e2, and may be the same as the inclination angle θ 2 of the inner box inclined surface 4e2, or may be larger than the inclination angle θ 2 of the inner box inclined surface 4e 2.

In the present embodiment, the entire substrate mounting surface 61a is provided to face the inner box inclined surface 4e2 in the front-rear direction, and the substrate accommodating portion 60 is provided to the outer box rear surface 3e so that the upper portion of the component mounting surface 61b faces the coupling portion 4f of the inner box 4 in the front-rear direction.

The control board 70 is mounted on the board mounting surface 61a such that the board surface of the printed board 70a is parallel to the board mounting surface 61 a. That is, the control board 70 is installed in the refrigerator main body 2 in an inclined state in which the printed board 70a is inclined forward as it goes upward.

As shown in fig. 8, an electric component 71 is mounted on the component mounting surface 61b, and the 1 st insertion hole 62 and the 2 nd insertion hole 63 are provided on both sides in the width direction with the electric component 71 interposed therebetween.

As shown in fig. 6 and 7, the substrate storage section 60 has a rear opening covered with a lid 64 in a state in which a control substrate 70 and an electric component 71 are stored therein. The cover 64 is fixed to the case back surface 3e by a fixing member 65 such as a screw. Thus, the lid 64 is positioned forward of the rear end of the grip 35b of the handle 35 in a state fixed to the rear surface 3e of the outer box.

(4) Control board 70 and electric component 71

Next, the structure of the control board 70 and the electric component 71 will be described mainly with reference to fig. 6 to 8.

The control board 70 is provided with a plurality of mounting components 72 such as a microcomputer for controlling the refrigerator 1, a memory for storing a control program and the like, and a smoothing capacitor constituting a part of the rectifier circuit, and is connected with an electric component 71 mounted on the component mounting surface 61b, on a printed board 70 a.

Among the mounting members 72 mounted on the control board 70, a member 72a having the largest protruding height from the printed board 70a (hereinafter, this member is also referred to as a "tall member") is mounted at a position offset from the center of the printed board 70a toward an arbitrary peripheral edge portion.

The control board 70 is mounted on the board mounting surface 61a such that the tall members 72a are positioned above the vertical center of the printed board 70 a. In the present embodiment, as shown in fig. 8, the printed board 70a is mounted such that at least a part of the tall component 72a is positioned below the electrical component 71 mounted on the component mounting surface 61 b.

The electric components 71 are 1 or more components connected to the control board 70, such as a reactor and an additional board provided separately from the control board 70. As shown in fig. 6, the reactor constituting the electric component 71 has a dimension in the front-rear direction in a state of being mounted on the component mounting surface 61b that is larger than a height (protrusion height) from the printed board 70a to the tip of the large component 72 a.

The control board 70 is connected to a power supply line 73 for supplying power from the outside, and to a1 st board lead 74a and a2 nd board lead 74b, the 1 st board lead 74a and the 2 nd board lead 74b having 1 or more leads for supplying power and communicating signals to a sensor and an electric device provided in the refrigerator 1.

The 1 st board wire 74a is connected to the refrigerating compartment temperature sensor 36, the freezing compartment temperature sensor 37, the cooler fan 22, the refrigerating baffle 25, the freezing baffle 27, the operation panel 39, and the

device wires

75a, 75b, 75c, and 75d connected to the lighting device 80, and supplies power to these sensors and electrical devices or transmits and receives signals.

The 1 st board lead wire 74a enters the heat insulation space 5 of the refrigerator main body 2 from the board housing portion 60 through the 1 st insertion hole 62 provided in the component mounting surface 61b, is drawn out to the housing 38 through one of the left and right sides (for example, the left side) of the rear portion of the heat insulation space 5, and is connected to the

device lead wires

75a, 75b, 75c, and 75d through connectors in the housing 38.

The 2 nd substrate lead wire 74b enters the heat insulating space 5 of the refrigerator main body 2 from the substrate storage 60 through the 2 nd insertion hole 63 provided in the component mounting surface 61b, is drawn out to the machine chamber 28 through the heat insulating space 5, and is connected to the compressor 29. Further, it is preferable that the 2 nd substrate lead wire 74b is routed into the heat space 5 through the 2 nd insertion hole 63, and then routed to the machine chamber 28 through the left and right sides of the rear portion of the heat insulating space 5 where the 1 st substrate lead wire 74a is routed, while avoiding one of the left and right sides of the rear portion of the heat insulating space 5.

(5) Rear wall member 40

As shown in fig. 4 to 6, the rear wall member 40 provided in the rear part of the refrigerating compartment 6 includes: a rear wall plate 41 constituting a front part thereof; a flow path forming member 42 attached to the back surface of the rear wall plate 41; and

ribs

52a, 52b projecting rearward from the rear surface of the rear wall plate 41.

The rear wall plate 41 is a plate-like body that divides the rear surface of the upper storage compartment 6c, and the front surface thereof is a surface that has a greater inclination with respect to the vertical direction as it goes upward.

Specifically, the front surface of the rear wall panel 41 has: a vertical surface 41a extending from the lower end of refrigerating compartment 6 in parallel with the vertical direction; an inclined surface 41b provided on the upper side of the vertical surface 41a and inclined forward as the inclined surface goes upward; and a connecting surface 41c that smoothly connects the vertical surface 41a and the inclined surface 41 b.

That is, the front surface of the rear wall plate 41 is formed by a vertical surface 41a and an inclined surface 41b which are arranged vertically so that the inclination with respect to the vertical direction becomes larger as the inclination becomes higher, and are connected to each other via a connecting surface 41 c.

Further, the surface whose inclination with respect to the vertical direction is larger as it goes upward is not limited to the surface in which the vertical surface and the 1 inclined surface are connected as described above, and for example, a plurality of inclined surfaces having different inclinations with respect to the vertical direction and the vertical surface may be connected in a vertically aligned manner such that the inclination with respect to the vertical direction is larger as it goes upward; a surface which is connected in a vertically-arranged manner such that a plurality of inclined surfaces having different inclinations with respect to the vertical direction are inclined more largely with respect to the vertical direction as the vertical surface is not provided; a surface that is gradually curved so that the inclination with respect to the vertical direction increases as the surface goes upward. In the above-described embodiment, the vertical surface and the inclined surface are smoothly connected via the connecting surface, but the vertical surface and the inclined surface may be directly connected, or inclined surfaces having different inclinations with respect to the vertical direction may be directly connected without via the connecting surface.

The vertical surface 41a, the inclined surface 41b, and the connecting surface 41c constituting the rear wall plate 41 are preferably provided in parallel with the inner box vertical surface 4e1, the inner box inclined surface 4e2, and the inner box connecting surface 4e3 provided on the inner box rear surface 4e at a predetermined interval in the front-rear direction.

The vertical surface 41a and the inclined surface 41b are flat surfaces having no irregularities in the width direction, and the connecting surface 41c is a curved surface having no irregularities in the width direction. Here, the flat plane having no unevenness in the width direction and the curved surface having no unevenness in the width direction mean a surface which is projected or recessed in the front-rear direction without changing the substantial thickness of the rear wall plate 41 and without corresponding to the front surface and the rear surface of the rear wall plate 41, and include a surface which is formed by making the front surface of the rear wall plate 41 uneven so as to change the thickness of the rear wall plate 41 and which is provided with a mark or a grain on the front surface of the rear wall plate 41.

Among the planes that divide the rear surface of the upper storage chamber 6c in the rear wall plate 41, the uppermost plane is provided to be longer in the vertical direction than the other planes. In the present embodiment, a portion 41a1 of vertical surface 41a above shelf 12a at the lowermost layer (hereinafter, this portion may be referred to as "vertical surface upper portion") and inclined surface 41b divide the rear surface of upper storage chamber 6c, and height h1 in the vertical direction of uppermost inclined surface 41b is set longer than height h2 in the vertical direction of vertical surface upper portion 41a 1.

As shown in fig. 10 and 11, the front corner 41d of the peripheral edge of the rear wall plate 41 is chamfered to be larger in a curved surface or a flat surface than the rear corner 41 e.

As shown in fig. 2 and 4, cut-

outs

45a and 45b are provided on both left and right sides of the lower end portion of the rear plate 41 that divides the rear surface of the lower storage compartment 6b, leaving a portion that covers the front surface of the flow passage forming member 42. Water supply device 31 and housing 38 are disposed in one cutout 45a, and communication hole 17 for communicating refrigerating compartment 6 and vegetable compartment 7 is provided below the other cutout 45 b.

When the rear wall plate 41 is attached to the back of the refrigerating chamber 6 as shown in fig. 2, the entire surface of the inner chamber back surface 4e and the recessed portion 4h provided outside thereof, and a part of the step portion 4g provided outside the recessed portion 4h are covered from the front in the upper storage chamber 6 c.

Specifically, as shown in fig. 2, 3, 6, 10, and 11, the rear wall panel 41 is disposed at the back of the upper storage compartment 6c such that the left and right side edges of the rear wall panel 41 overlap the flat surface 4g2 of the stepped portion 4g in the left-right direction and the front-rear direction, and the upper edge of the rear wall panel 41 overlaps the flat surface 4g2 of the stepped portion 4g in the up-down direction and the front-rear direction. That is, the rear wall plate 41 continuously covers the concave portion 4h side (rear side) of the step portion 4g of the inner box 4 from the front, on the left and right sides and above the inner box rear surface 4 e.

A flow path forming member 42 narrower than the rear wall plate 41 is attached to the rear surface of the rear wall plate 41. The flow path forming member 42 is formed of a heat insulating molded body having a horizontal cross section substantially in the shape of "コ" and having a rear opening, which is formed of a heat insulating material such as a foamed heat insulating material. The rear end surface 42a of the flow passage forming member 42 is in contact with the inner box rear surface 4e via a sealing member such as a soft adhesive tape (see fig. 3). Thereby, the 1 st flow path portion 24b and the 2 nd flow path portion 24c are formed between the flow path forming member 42 and the inner case back surface 4 e.

A blow-out port 18b penetrating from the front surface of the flow path forming member 42 and the rear wall plate 41 and opening to the lower storage chamber 6b is provided in the front surface of the 1 st flow path portion 24b, and a blow-out port 18c penetrating from the front surface of the flow path forming member 42 and the rear wall plate 41 and opening to the upper storage chamber 6c is provided in the front surface of the 2 nd flow path portion 24 c. In the present embodiment, the widthwise central portions of the

air outlets

18b and 18c are provided so as to be positioned at the widthwise central portion of the rear wall plate 41, and are provided at the widthwise central portions of the lower storage room 6b and the upper storage room 6 c.

As shown in fig. 5 and 6, an outer protrusion 51a, an inner protrusion 51b, a1 st ridge 52a, and a2 nd ridge 52b are provided on the back surface of the rear wall plate 41.

The outer projection 51a projects rearward from the rear surface of the rear wall plate 41 on the widthwise outer side of the flow passage forming member 42, and engages with a holding member 51c (see fig. 6) projecting forward from the inner box rear surface 4e, thereby fixing the rear wall plate 41 to the inner box rear surface 4 e. The inner protrusion 51b penetrates the flow path forming member 42 from the rear surface of the rear wall plate 41 to protrude rearward, and engages with a protrusion, not shown, protruding forward from the inner box rear surface 4e, thereby fixing the rear wall plate 41 to the inner box rear surface 4e with the flow path forming member 42 interposed therebetween.

When the rear wall member 40 is fixed to the inner box rear surface 4e by the outer protrusion 51a and the inner protrusion 51b, the rear wall member is disposed at the rear portion of the refrigerating compartment 6 so that the peripheral edge portion of the rear wall plate 41 is parallel to the front surface of the rear wall plate 41 in the upper storage compartment 6c and overlaps the step portion 4g of the inner box 4 in a direction away from the peripheral edge portion of the rear wall plate 41 (hereinafter, this direction may be referred to as "the out-of-plane direction of the rear wall plate 41"). In the present embodiment, the rear wall panel 41 is disposed at the back of the refrigerating compartment 6 such that the front left and right side edges of the rear wall panel 41 overlap the step portion 4g of the inner box 4 in the width direction of the upper storage compartment 6c, and the front upper edge of the rear wall panel 41 overlaps the step portion 4g of the inner box 4 in the vertical direction.

The 1 st ridge 52a is provided along the rear surface peripheral edge portion of the rear wall panel 41 so as to face the concave formation portion 4h of the inner box 4 with a predetermined interval in a state where the rear wall member 40 is attached to the refrigerating compartment 6. The 1 st protrusion 52a is provided with a locking piece 50 at a position facing the inner box engagement portion 4i provided in the concave portion 4 h. When the locking piece 50 is engaged with the opposing inner box engagement portion 4i, the peripheral edge of the rear wall plate 41 is fixed to the inner box 4 so as to overlap the flat surface 4g2 of the stepped portion 4g of the inner box 4 in the outward-facing direction of the rear wall plate 41.

The 2 nd beads 52b are provided along both sides of the flow path forming member 42 in the width direction, and the upper ends of the 2 nd beads 52b are connected to the 1 st beads 52a extending in the width direction of the refrigerator along the upper edge portion of the rear wall plate 41. The 2 nd ridge 52b holds the flow path forming member 42 by locking the projection 52b1 projecting toward the flow path forming member 42 to the flow path forming member 42.

The thickness of the 1 st and 2

nd protrusions

52a and 52b is set to be thinner than the thickness of the rear wall plate 41.

Further, on the back surface of the rear wall plate 41, in addition to the

projections

51a and 51b and the

ribs

52a and 52b, a claw portion 53 for holding a device lead 75a connected to the operation panel 39, a lead guide portion 54, and a sensor mounting portion 55 for fixing the refrigerating chamber temperature sensor 36 to the back surface of the rear wall plate 41 are provided.

As shown in fig. 4, the rear wall plate 41 is provided with a horizontally long rectangular through hole 56 and a cold air introduction window 57 that are long in the left-right direction and that house the operation panel 39. The through-hole 56 is provided so as to penetrate through the vertical surface upper portion 41a1 along the other side (in the present embodiment, the left side) in the width direction of the 1 st flow path portion 24b disposed on the one side in the width direction with respect to the center in the width direction of the refrigerating compartment 6.

(6) Operation panel 39 and refrigerating compartment temperature sensor 36

As shown in fig. 4 and 5, a frame 58 projecting rearward is provided at the peripheral edge of the through-hole 56, and the operation panel 39 inserted into the through-hole 56 is locked to the frame 58. A hole 58a for leading out the device lead 75a connected to the operation panel 39 to the outside of the frame 58 on the back surface of the rear wall plate 41 is provided on the lower side of the frame 58. The operation panel 39 is fixed in a state where the operation buttons and the display portion are housed in the through-hole 56 and the rear surface 4e of the inner box located behind the through-hole. The operation panel 39 is disposed above the housing 38 provided in the cutout 45a of the rear wall plate 41.

The device lead 75a connected to the operation panel 39 is drawn out below the operation panel 39 through the hole 58a of the frame 58 and routed to the chassis 38 along the back surface of the rear wall plate 41.

Specifically, as shown in fig. 4, 5, and 9, the device lead 75a drawn out downward from the hole 58a of the casing 58 is bent toward the center in the width direction (toward the 1 st flow path portion 24b) at the claw portion 53 provided below the operation panel 39, and is routed along the lead guide 54. The lead wire guide portion 54 guides the device lead wire 75a to the insertion hole 52b2 provided in the 2 nd protrusion 52b while inclining the device lead wire 75a so as to be positioned upward as it moves away from the operation panel 39 (in the present embodiment, as it approaches the 1 st flow path portion 24 b).

The device lead wire 75a passes through the insertion hole 52b2 and enters the inside of the 2 nd protrusion 52b (the flow path forming member 42 side), passes through the lead wire housing portion 59 formed between the 2 nd protrusion 52b and the flow path forming member 42, reaches the lower end of the lower storage chamber 6b, and is wired along the edge portion of the 1 st flow path portion 24 b. The device lead wire 75a is drawn out to the lower side of the chassis 38 through the lead-out hole 52b3 provided at the lower end portion of the 2 nd protrusion 52 b.

A sensor mounting portion 55 is provided on the rear surface of the rear wall plate 41 above the through hole 56, and the refrigerating chamber temperature sensor 36 is fixed to the sensor mounting portion 55. A cold air introduction window 57 penetrating the rear wall plate 41 is provided in front of the refrigerating compartment temperature sensor 36, and the air in the upper storage compartment 6c can contact the refrigerating compartment temperature sensor 36 through the cold air introduction window 47.

Similarly to the device lead 75a of the operation panel 39, the device lead 75b connected to the refrigeration compartment temperature sensor 36 is inserted into the 2 nd protrusion 52b through the insertion hole 52b4 provided in the 2 nd protrusion 52b, routed through the lead storage portion 59 to the lower end of the lower storage compartment 6b, and led out to the lower side of the cabinet 38 through the lead-out hole 52b3 together with the device lead 75a of the operation panel 39.

(7) Case 38

As shown in fig. 9, the housing 38 is configured by a case body including a housing main body 38a having an opening at a front surface thereof and a lid body 38b closing the opening, and the

device wires

75a and 75b enter the housing 38 from a lower surface hole portion 38a1 provided at a lower surface of the housing main body 38 a.

In the housing 38, in addition to the

device wires

75a and 75b connected to the operation panel 39 and the refrigerating compartment temperature sensor 36, a device wire 75c connected to the refrigerating compartment temperature sensor 37, the cooler fan 22, the refrigerating baffle 25, and the refrigerating baffle 27, and a device wire 75d connected to the lighting device 80 enter the housing 38 from the lower surface hole portion 38a 1.

A shielding plate 38b1 protruding downward from the lower end of the lid body 38b and toward the 1 st flow path portion 24b is provided in front of the lower surface hole portion 38a 1. The shielding plate 38b1 shields the

device wires

75a, 75b, 75c, and 75d entering from the lower surface hole 38a1 of the chassis 38 from the front.

A rear surface hole 38a2 that communicates with a hole provided in the inner box rear surface 4e and opens into the heat insulation space 5 is provided in the rear surface of the case main body 38a, and the 1 st board lead 74a extending from the control board 70 passes through the rear surface hole 38a2 and enters the inside of the case 38.

The 1 st board lead 74a entering the inside of the chassis 38 from the rear surface hole 38a2 and the device leads 75a, 75b, 75c, 75d entering the inside of the chassis 38 from the lower surface hole 38a1 are connected inside the chassis 38 via connectors.

(8) Effect

In the present embodiment as described above, the rear wall plate 41 is formed of a surface having a larger inclination with respect to the vertical direction as it goes upward, and therefore, the rear surface of the upper storage compartment 6c visible from the front is not formed with the uneven shape in the vertical direction, and the appearance of the inside of the upper storage compartment 6c can be improved.

In particular, when the front surface of the rear wall plate 41 is formed of a surface inclined to be directed forward as it goes upward, the upper rear portion of the upper storage compartment 6c, which is not easily used effectively, can be divided into front and rear parts by the rear wall plate 41 while suppressing visual discomfort, and a space for arranging components of the refrigerator such as the control board 70 can be formed in the rear part of the rear wall plate. That is, a space for arranging components of the refrigerator can be secured without impairing the substantial storage volume, heat insulating performance, and interior appearance of the upper storage chamber 6 c.

In the present embodiment, when the rear wall plate 41 is disposed in front of the inner box back surface 4e so as to overlap the step portion 4g in the outward-facing direction of the rear wall plate 41 and cover a part of the step portion 4g from the front, the peripheral edge of the rear wall plate 41 can be brought close to the step portion 4g of the inner box 4 in the lateral direction and the front-rear direction. Thus, the rear wall panel 41 does not look unnaturally obtrusive from the inner box 4, but looks continuously continuous from the front extension surfaces 4a, 4b, 4c via the step portion 4g, and the appearance inside the upper storage compartment 6c can be improved.

In the present embodiment, when the front corner 41d of the peripheral edge of the rear wall panel 41 is chamfered by a curved surface or a flat surface to a greater extent than the rear corner 41e, the peripheral edge of the rear wall panel 41 becomes less conspicuous, and the appearance of the interior of the upper storage compartment 6c can be improved.

In the present embodiment, when the inclined surface 41b located uppermost among the flat surfaces 41a1, 41b constituting the front surface of the rear wall panel 41 is provided to be long in the vertical direction, visual discomfort due to the inclined surface 41b can be suppressed as much as possible.

In the present embodiment, when the front surface of the rear wall plate 41 is provided flat in the width direction of the upper storage compartment 6c, the uneven shape is not formed on the entire rear surface of the upper storage compartment 6c, and the appearance of the inside of the upper storage compartment 6c can be further improved.

In the present embodiment, when the operation panel 39 is housed between the through-hole 56 provided in the rear wall plate 41 and the inner box rear surface 4e, the degree of freedom in the arrangement of the operation panel 39 can be increased, for example, by arranging the front peripheral edge portion of the operation panel 39 so as to slightly protrude forward from the front surface of the rear wall plate 41 to enhance the appearance of the operation panel 39, or by arranging the front surface of the operation panel 39 and the front surface of the rear wall plate 41 so as to form the same surface without a step difference, without sacrificing the thickness of the heat insulating space in the refrigerator main body 2.

In the present embodiment, when the 1 st flow path portion 24b formed between the rear wall plate 41 and the inner box back surface 4e is disposed on one side in the width direction with respect to the center in the width direction of the upper storage chamber 6c, and the through hole 56 for accommodating the operation panel 39 is disposed on the other side in the width direction, the through hole 56 is easily provided in the rear wall plate 41, and the degree of freedom in the size and arrangement of the operation panel 39 is increased.

In the present embodiment, when the through-hole 56 for housing the operation panel 39 is provided in the vertical surface 41a of the rear wall plate 41, the operation panel 39 can be attached to the vertical surface 41a facing the front surface of the refrigerator 1, and the operation panel 39 can be disposed at a position easy to operate.

In the present embodiment, when the connecting portion 4f that connects the inner box rear surface 4e and the front extension surfaces 4a, 4b, and 4c includes the curved surface 4g1 that expands rearward so as to extend inward of the upper storage chamber 6c as it goes rearward, and the concave forming portion 4h that forms a concave portion that is recessed rearward with respect to the inner box rear surface 4e, it is possible to suppress deformation of the connecting portion 4f of the inner box 4 when the heat insulating material is foam-filled into the heat insulating space 5.

That is, in order to foam and fill the heat insulating material into the heat insulating space 5, the heat insulating material is filled while the outer sides of the outer box 3 and the inner box 4 are supported by jigs having shapes corresponding to the respective outer boxes. At this time, if the curved surface 4g1 is formed on the connection portion 4f, the shape of the inner box 4 is not easily matched with a jig for supporting the inner box 4 due to an error or the like generated when the inner box 4 is molded, and the curved surface 4g1 is easily deformed at the time of foam filling. As described above, when the inner box 4 includes the concave portion 4h behind the curved surface 4g1, the shape of the inner box 4 can be easily matched to a jig for supporting the inner box 4, and the curved surface 4g1 can be formed into a beautiful curved shape.

In the present embodiment, when the refrigerating-side flow path 24 formed between the rear wall plate 41 and the inner-box back surface 4e includes the 1 st flow path portion 24b disposed at one side in the width direction with respect to the center in the width direction of the upper storage chamber 6c and the 2 nd flow path portion 24c disposed at the center in the width direction of the upper storage chamber 6c with respect to the 1 st flow path portion 24b, the cooling air can be uniformly supplied in the width direction of the upper storage chamber 6c to cool the side of the 1 st flow path portion 24b while securing a space for disposing the operation panel 39 at the side of the 1 st flow path portion 24 b.

In the present embodiment, the connectors of the device wires 75a connected to the operation panel 39, the connectors of the

device wires

75b, 75c, 75d connected to the refrigerating compartment temperature sensor 36, the freezing compartment temperature sensor 37, the cooler fan 22, the refrigerating baffle 25, the freezing baffle 27, the operation panel 39, and the lighting device 80 are provided in the housing 38 disposed below the operation panel 39, and when the housing 38 is connected to the 1 st board wire 74a connected to the control board 70, the lengths of the wires can be shortened, and the connectors can be connected from the front side of the refrigerator, thereby improving workability.

In the present embodiment, when the device lead wire 75a is connected to the lower side of the operation panel 39, the water condensed on the device lead wire 75a does not enter the operation panel 39 through the device lead wire 75 a. In addition, when the lead guide portion 54 that guides the device lead wire 75a in a state in which the device lead wire 75a is inclined so as to be positioned more upward as the distance from the operation panel 39 increases is provided in the rear wall plate 41, water condensed on the device lead wire 75a does not enter the operation panel 39 through the device lead wire 75 a.

In the present embodiment, since the pull-out type water supply tank 30 and the storage container 14 are provided in front of the casing 38, the casing 38 is not conspicuous when the refrigerator is used, and the appearance of the inside of the refrigerating chamber 6 is not impaired.

In the present embodiment, when the device lead 75a connected to the operation panel 39 is routed to the housing 38 along the edge portion of the 1 st flow path portion 24b provided on the side of the housing 38, the length of the device lead 75a can be shortened, and the device lead 75a can be held by the rear wall member 40 that partitions the 1 st flow path portion 24b, which is excellent in assembly workability.

In the present embodiment, since the locking piece 50 provided at the rear surface peripheral edge portion of the rear wall panel 41 is engaged with the inner box engagement portion 4i provided at the connection portion 4f of the inner box 4, the peripheral edge portion of the rear wall panel 41 can be disposed at a desired position of the inner box 4, and the appearance inside the upper storage compartment 6c can be improved.

In the present embodiment, when the

beads

52a, 52b having a thickness smaller than the thickness of the rear wall plate 41 protrude rearward from the rear surface of the rear wall plate 41, deformation such as warpage or torsion of the rear wall plate 41 can be suppressed, and the front surface of the rear wall plate 41 can be suppressed from being dented (dented) by the

beads

52a, 52 b.

In the present embodiment, the housing bottom surface 61 of the substrate housing 60 on which the control substrate 70 and the electric component 71 are mounted is disposed to face the inner box inclined surface 4e2 that is inclined forward as it goes upward. Thus, in the present embodiment, the concave-convex shape is not generated on the rear surface of the upper storage chamber 6c, and the upper rear portion of the upper storage chamber 6c, which is not easily used effectively, can be divided into front and rear portions by the inner case rear surface 4e, and the control board 70 and the electric component 71 can be housed behind the rear portion. Therefore, a space for arranging the components of the refrigerator can be secured without impairing the substantial storage volume, heat insulating performance, and interior appearance of the upper storage chamber 6 c.

In the present embodiment, when the housing bottom surface 61 of the substrate housing 60 includes the component mounting surface 61b on which the electrical component 71 is mounted on the upper side of the substrate mounting surface 61a on which the control substrate 70 is mounted, the electrical component 71, which is high and easily protruded when mounted, such as a reactor, can be disposed above the space easily formed by the inclination of the inner box inclined surface 4e2, and the control substrate 70 and the electrical component 71 can be efficiently provided in the refrigerator main body 2.

In the present embodiment, when the housing bottom surface 61 of the substrate housing 60, which is provided to face the inner box inclined surface 4e2 in the front-rear direction, is provided with the substrate attachment surface 61a inclined forward as it goes upward, the volume of the substrate housing 60 can be increased while maintaining the housing volume, the heat insulating performance, and the like of the upper storage chamber 6c, and the control substrate 70 and the electric component 71 can be more efficiently provided in the refrigerator main body 2.

In the present embodiment, when the control board 70 is mounted on the board mounting surface 61a so as to be inclined forward as it goes upward along the board mounting surface 61a, the control board 70 can be more efficiently provided in the refrigerator main body 2.

In the present embodiment, when the control board 70 is mounted on the board mounting surface 61a such that the high-height members 72a are positioned above the vertical center portion of the control board 70, the high-height members 72a can be arranged on the board mounting surface 61a at positions offset forward, and the control board 70 can be efficiently installed in the refrigerator main body 2.

In the present embodiment, when the component mounting surface 61b is a plane extending in parallel with the vertical direction, the component can be stably fixed even if the electrical component 71 mounted on the component mounting surface 61b is a large electrical component such as a reactor.

In the present embodiment, the insertion holes 62 and 63 for inserting the 1 st substrate lead wire 74a and the 2 nd substrate lead wire 74b connected to the control substrate 70 into the heat insulating space are provided on the side of the electric component, so that the length of the 1 st substrate lead wire 74a and the 2 nd substrate lead wire 74b can be shortened. Further, when the 1 st insertion hole 62 is provided on one side in the width direction of the electric component 71 and the 2 nd insertion hole 63 is provided on the other side in the width direction of the electric component 71, the influence of noise generated from one of the 1 st substrate lead wire 74a and the 2 nd substrate lead wire 74b is less likely to be transmitted to the other side, and malfunction and the like can be suppressed.

In the present embodiment, when the substrate storage section 60 is provided on the outer box rear surface 3e so that the lower end of the storage section bottom surface 61 of the substrate storage section 60 is positioned above the lower end of the inner box inclined surface 4e2, even if the inclination angle of the inner box inclined surface 4e2 with respect to the vertical direction is set small, the space in the front-rear direction necessary for the substrate storage section 60 can be secured. Therefore, the back surface of the upper storage compartment 6c can be gently inclined to suppress visual discomfort, and the appearance of the inside of the upper storage compartment 6c can be improved.

In the present embodiment, when the angle θ 1 of the board mounting surface 61a with respect to the vertical direction is smaller than the angle θ 2 of the inner box inclined surface 4e2 with respect to the vertical direction, the angle of the control board 70 with respect to the vertical direction can be set small. In addition, the distance from the inner case back surface 4e to the housing bottom surface 61 can be increased above the substrate housing portion 60, and the heat insulating space 5 can be made thick around the electric component 71 such as a reactor that is likely to generate heat.

In the present embodiment, when the member attachment surface 61b extending upward from the substrate attachment surface 61a is positioned between the pair of handle portions 35 provided at the upper end of the rear surface of the refrigerator main body with a gap in the width direction, the space between the handle portions 35 at the upper end of the rear surface of the refrigerator main body 2 can be effectively used.

(9) Modification example

A modification of the above embodiment will be described.

In the above-described embodiment, the case where the air outlet 18b and the air outlet 18c are provided in the widthwise central portion of the rear wall plate 41 has been described, but the present invention is not limited to this, and the widthwise central portions of the

air outlets

18b and 18c may be provided at positions offset from the widthwise central portion of the rear wall plate 41.

In the above-described embodiment, the case where the stepped portion 4g constituting the coupling portion 4f includes the curved surface 4g1 coupled to the rear ends of the front extending

surfaces

4a, 4b, and 4c and the flat surface 4g2 extending rearward from the rear end of the curved surface 4g1 has been described, but the present invention is not limited to this, and the stepped portion 4g may include only the curved surface 4g1 and the concave portion 4h coupled to the rear end of the curved surface 4g 1.

In the above-described embodiment, the case where the peripheral edge portion of the rear wall plate 41 overlaps the step portion 4g of the inner box 4 in the out-of-plane direction of the rear wall plate 41 has been described, but the present invention is not limited to this, and the rear wall plate 41 may be disposed so as to overlap the curved surface 4g1 in the out-of-plane direction of the rear wall plate 41.

In the above-described embodiment, the case where the rear wall plate 41 is inclined to be more forward as going upward has been described, but the present invention is not limited to this, and the rear wall plate 41 may be inclined to be more rearward as going upward.

Claims

1. A refrigerator is provided with:

a refrigerator main body having an inner box provided with a storage chamber having a front opening therein, an outer box disposed outside the inner box, and a heat insulating material accommodated in a heat insulating space provided between the inner box and the outer box;

a substrate receiving portion provided in a concave shape recessed forward from an upper end portion of a rear surface of the refrigerator main body;

a control substrate disposed inside the substrate receiving portion; and

an electric component disposed inside the substrate housing part and connected to the control substrate,

the back surface of the inner box is provided with an inner box inclined surface which inclines forwards as the upper end part of the inner box goes upwards,

the substrate receiving portion has a receiving portion bottom surface opposed to the inner box inclined surface in the front-rear direction,

the bottom surface of the housing section includes a substrate mounting surface on which the control substrate is mounted, and a component mounting surface that is provided above the substrate mounting surface and on which the electrical component is mounted.

2. The refrigerator of claim 1, wherein,

the component mounting surface is disposed forward of the substrate mounting surface.

3. The refrigerator of claim 2, wherein,

the electric component has a size in a front-rear direction in a state of being mounted on the component mounting surface larger than a protruding height of a component having a largest protruding height from the control board among components mounted on the control board.

4. The refrigerator according to any one of claims 1 to 3,

the substrate mounting surface is inclined forward as it goes upward,

the control board is provided along the board mounting surface so as to be inclined forward as the control board goes upward.

5. The refrigerator according to claim 4, wherein,

the control board is mounted on the board mounting surface such that a component having a maximum protrusion height from the control board among components mounted on the control board is positioned above a vertical center portion of the control board.

6. The refrigerator of claim 4 or 5,

the component mounting surface is a plane extending in parallel with the up-down direction.

7. The refrigerator according to any one of claims 1 to 6,

a1 st insertion hole for inserting a lead wire connected to the control board into the heat insulating space is provided on one side in the width direction of the electric component.

8. The refrigerator according to claim 7, wherein,

a2 nd insertion hole for inserting a2 nd lead wire connected to the control board into the heat insulating space is provided on the other side in the width direction of the electric component.