CN113686077B

CN113686077B - Refrigerator with a refrigerator body

Info

Publication number: CN113686077B
Application number: CN202110234600.4A
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: 2024-05-07
Anticipated expiration: 2041-03-03
Also published as: CN113686077A; JP7481163B2; JP2021181848A

Abstract

The invention relates to a refrigerator, which can ensure a space for arranging a substrate accommodating part for accommodating a control substrate without damaging heat insulation performance and beautiful appearance inside a storage room. The refrigerator of the invention comprises: a substrate storage part (60) which is provided in a concave shape recessed forward from the upper end of the back surface of the refrigerator main body (2); a control substrate (70) of a refrigerator (1) is arranged in a substrate storage part (60), a rear surface (4 e) of an inner box (4) is provided with an inner box inclined surface (4 e 2) which is inclined forward more upward at the upper end part, the substrate storage part (60) is provided with a storage part bottom surface (61) which is opposite to the inner box inclined surface (4 e 2) in front-back direction, and the storage part bottom surface (61) is provided with a storage part inclined surface (61 a) which is inclined forward more upward.

Description

Refrigerator with a refrigerator body

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 in a board housing portion provided on a back surface and an upper surface of a refrigerator main body so as to be recessed toward a heat insulating space (see patent document 1 below).

In such a refrigerator, it is necessary to ensure heat insulating performance between the substrate storage unit and the storage chamber in order to prevent dew condensation from occurring in the substrate storage unit, and there is a case where a convex portion corresponding to the substrate storage unit appears on the back surface or the upper surface of the storage chamber, thereby impairing the appearance of the interior of the storage chamber.

Prior art literature

Patent literature

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

Disclosure of Invention

The present invention has been made in consideration of the above circumstances, and an object thereof is to provide a refrigerator capable of ensuring a space for providing a substrate accommodating portion for accommodating a control substrate without impairing the heat insulating performance and the beauty inside a storage room.

A refrigerator according to an embodiment includes: a refrigerator main body having an inner case provided with a storage chamber having a front opening therein, an outer case disposed outside the inner case, and a heat insulating material stored in a heat insulating space provided between the inner case and the outer case; a substrate accommodating part which is provided in a concave shape recessed forward from the upper end part of the back surface of the refrigerator main body; and a control substrate of the refrigerator, which is arranged in the substrate storage part, wherein the back surface of the inner box is provided with an inner box inclined surface which is inclined forwards more upwards at the upper end part, the substrate storage part is provided with a storage part bottom surface which is opposite to the front and back of the inner box inclined surface, and the storage part bottom surface is provided with a storage part inclined surface which is inclined forwards more upwards.

Effects of the invention

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

Drawings

Fig. 1 is a vertical 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 the door omitted.

Fig. 3 is a sectional view A-A showing 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 an 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 the reference numerals

1 Refrigerator, 2 refrigerator main body, 3 outer case, 4 inner case, 4a inner case left side face, 4b inner case right side face, 4c inner case upper surface, 4d inner case bottom face, 4e inner case back face, 4e1 inner case vertical face, 4e2 inner case inclined face, 4e3 connecting face, 4f connecting portion, 4g step portion, 4g1 curved face, 4g2 plane, 4h concave forming portion, 4h1 rear extension portion, 4h2 inclined portion, 4i inner case engaging portion, 6 refrigerating chamber, 6b lower refrigerating chamber, 6c upper refrigerating chamber, 21 cooler, 24 refrigerating side flow path, 24b 1 st flow path portion, 24c 2 nd flow path portion, 35 handle portion, 36 refrigerating chamber temperature sensor, 38 casing, 39 operation panel, the rear wall member 40, the rear wall plate 41, the vertical surface 41a, the upper portion of the vertical surface 41a1, the inclined surface 41b, the connection surface 41c, the narrow portion 41d, the flow path forming member 42, the rear end surface 42a, the 50 locking piece 52a 1 st projection 52a 2 nd projection 56 through hole 60 the substrate housing portion 61 housing portion bottom surface 61a substrate mounting surface 61b component mounting surface 62 1 st insertion hole 63 nd insertion hole 64 lid 65 fixing member 70 control board 71 electrical component 72 assembly component 72a high component 74a 1 st substrate lead 74b 2 nd substrate lead 75a device lead 75b device lead 75c device lead 75d device lead.

Detailed Description

Hereinafter, a refrigerator 1 according to an embodiment of the present invention will be described based on the drawings. The following embodiments are examples, and the scope of the invention is not limited thereto. The following embodiments can be variously omitted, replaced, and modified 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-rear direction, and the up-down direction represent 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, inner, back, front, etc. indicate positions or sides when the refrigerator is viewed from the front, unless otherwise specified. In the inner case 4 of the refrigerator 1, the side facing the storage chamber is set as the inside of the case, and the side facing the outer case 3 through the heat insulating material is set as the heat insulating space side.

(1) Refrigerator 1 construction

The structure of the refrigerator 1 will be described with reference to the accompanying drawings. As shown in fig. 1 to 3, the refrigerator 1 includes a refrigerator main body 2 that is open at the front. The refrigerator main body 2 includes an outer case 3 made of a steel plate and an inner case 4 made of a synthetic resin, and a heat insulation space 5 for accommodating a heat insulating material such as a foamed heat insulating material or a vacuum heat insulating panel is formed between the outer case 3 and the inner case 4. The refrigerator main body 2 is provided with a plurality of storage compartments inside the inner case 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 the refrigerating chamber.

The refrigerating chamber 6 and the vegetable chamber 7 are storage chambers cooled to a refrigerating temperature zone (for example, 1 to 4 ℃) based on the detected temperature of the refrigerating chamber temperature sensor 36 provided behind them. 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 in the front opening of the refrigerator compartment 6.

The rear surface of the refrigerator compartment 6 is partitioned by a rear wall member 40 provided at a distance in front of the inner case rear surface 4 e. Between the rear wall member 40 and the inner box rear surface 4e, a1 st flow path portion 24b and a2 nd flow path portion 24c that constitute a part of the cooling side flow path 24 through which the cool air supplied to the cooling chamber 6 flows are formed. The rear wall member 40 is provided with an operation panel 39 for a user to set various temperatures of the refrigerating chamber 6, the freezing chamber 10, and the like, and a refrigerating chamber temperature sensor 36 for detecting the temperature in the refrigerating chamber 6.

A plurality of shelves 12 are provided in the inner space of the refrigerating chamber 6 at intervals up and down. In the space vertically partitioned by the partition plate 11 and the lowermost shelf 12a, a lower storage chamber 6b for storing the drawer type container such as the water supply tank 30 and the storage container 14 is formed, and in the space partitioned above the lowermost shelf 12a, an upper storage chamber 6c in which the shelf 12 is provided is formed.

The lower storage chamber 6b is partitioned in the refrigerator width direction by a vertical partition wall 13 disposed on one side wall (left side wall) of the refrigerator chamber 6 (see fig. 3). A water supply tank 30 and a water supply device 31 are provided in a space sandwiched between the left side wall of the refrigerator compartment 6 and the 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 sandwiched between the vertical partition wall 13 and the other side wall (right side wall) of the refrigerator compartment 6. As shown in fig. 3, the vertical partition wall 13 is disposed so as to be shielded behind the front portion of the storage container 14.

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

The upper storage chamber 6c is a storage chamber disposed at the uppermost level in the refrigerator 1, and the rear wall plate 41 of the rear wall member 40 disposed at the rear of the upper storage chamber 6c is exposed so as to be visible from the front in a state where stored articles are not stored.

The lowermost shelf 12a may be fixed to the left and right side surfaces 4a, 4b of the inner case 4, or may be detachably attached to the left and right side surfaces 4a, 4b of the inner case 4.

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

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

The freezing chamber 10 is a storage chamber cooled to a freezing temperature zone (e.g., -10 to-20 ℃) based on the detected temperature of the freezing chamber temperature sensor 37 provided behind it. The vegetable compartment 7 and the freezing compartment 10 are vertically partitioned by a heat insulating partition wall 16 having a heat insulating material provided therein. A drawer type heat insulation 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, a middle container 101, and an upper container 102 are vertically arranged 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 pulled out of the box together with the door opening operation.

Above the upper container 102, an ice making device 105 including an ice making tray and an ice separating mechanism is provided, 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 chamber 6, and water in 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 in the inner portion of the freezing chamber 10, and the cooler chamber 23 accommodates a cooler 21 that generates cool air for cooling the storage chambers 6, 7, and 10, and a cooler fan 22. The cooler chamber 23 is connected to: a refrigerating side flow path 24 for supplying cool air generated by the cooler 21 to the refrigerating chamber 6; a cooling-side flow path 26 for supplying the cool air generated by the cooler 21 to the freezing chamber 10; and a return duct 19 for returning the air flowing from the respective storage chambers 6, 7, 10 to the cooler chamber 23. A refrigeration damper 25 is provided at a portion where the cooler chamber 23 and the refrigeration-side flow path 24 are connected, and a freezing damper 27 is provided at a portion where the cooler chamber 23 and the freezing-side flow path 26 are connected.

The refrigerating-side flow path 24 is formed by connecting a vegetable chamber flow path 24a provided at the rear of the vegetable chamber 7, a1 st flow path portion 24b and a2 nd flow path portion 24c provided at the rear of the refrigerating chamber 6 in this order from the bottom.

The vegetable chamber flow path 24a is arranged such that the widthwise center thereof is located on one side (right side in the present embodiment) in the widthwise direction than the widthwise center of the vegetable chamber 7. The vegetable chamber flow path 24a is connected to the lower end of the 1 st flow path portion 24b so that the flow path width increases as it goes upward from the refrigeration damper 25.

The 1 st flow path portion 24b extends upward from the lower end of the lower storage chamber 6b, extends to a position above the lowermost shelf 12a, 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 (right side in the present embodiment) in the width direction from the width direction center of the refrigerator compartment 6.

The upper end of the 1 st flow channel portion 24b is connected to the 2 nd flow channel portion 24c via an inclined portion 24d inclined inward in the width direction (in the present embodiment, left side) with respect to the vertical direction. The 2 nd flow path portion 24c is disposed with its widthwise center being closer to the widthwise center of the refrigerating chamber 6 than the widthwise center of the 1 st flow path portion 24 b.

The air outlet 18b opening into the lower storage chamber 6b is provided in front of the 1 st flow path portion 24b, and the air outlet 18c opening into the upper storage chamber 6c is provided in front 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 the 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 the air in the cooler chamber 23 to generate cool air for cooling the respective storage chambers 6, 7, 10.

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

The control board 70 controls the opening and closing of the refrigeration 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 advance in a memory, thereby controlling the entire operation of the refrigerator 1.

In the refrigerator 1 having such a configuration, the cold air generated by the cooler 21 is supplied to the refrigerator compartment 6 and the vegetable compartment 7 and the freezer compartment 10 by controlling the rotation of the cooler fan 22 and the opening and closing of the refrigerator barrier 25 and the freezer barrier 27, so that the respective storage compartments 6,7, 10 can be cooled to satisfy the predetermined temperature conditions by the detection temperatures of the refrigerator compartment temperature sensor 36 and the freezer compartment temperature sensor 37.

Specifically, in the case of cooling the refrigerator compartment 6 and the vegetable compartment 7, the cooler 21 is cooled by driving the compressor 29, and the cooler fan 22 is driven in a state in which the refrigerator shutter 25 is opened and the freezer shutter 27 is closed. Thus, the air cooled by the cooler 21 flows upward through the vegetable room flow path 24a, the 1 st flow path portion 24b, the inclined portion 24d, and the 2 nd flow path portion 24c, and is supplied from the air outlets 18b and 18c to the refrigerating chamber 6, thereby cooling the refrigerating chamber 6. The air flowing through the refrigerating chamber 6 flows into the vegetable chamber 7 through the communication hole 17 provided in the partition plate 11, cools the interior of the vegetable chamber 7, is taken into the return duct 19 from the suction port 19a provided on the rear surface of the vegetable chamber 7, returns to the cooler chamber 23, and exchanges heat with the cooler 21 again to be cooled.

In the case of cooling the freezing chamber 10, the cooler 21 is cooled by driving the compressor 29, and the cooler fan 22 is driven in a state in which the freezing barrier 27 is opened and the refrigerating barrier 25 is closed. Thereby, the air cooled by the cooler 21 is supplied from the air outlet 34 to the freezing chamber 10 through the freezing-side flow path 26, and the freezing chamber 10 is cooled. The air flowing through the freezing chamber 10 is taken into the return duct 19 from the suction port 19b provided on the back surface of the freezing chamber 10, returns to the cooler chamber 23, exchanges heat with the cooler 21 again, and is cooled.

(2) Refrigerator main body 2

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

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

As shown in fig. 1 and 6, the portion of the inner box back surface 4e located rearward of the refrigerator compartment 6 is formed of a surface having a larger inclination with respect to the vertical direction as it goes upward. In the present embodiment, the inner box back surface 4e has: an inner box vertical surface 4e1 extending from the lower end of the refrigerating chamber 6 in parallel with the up-down direction; an inner box inclined surface 4e2 provided above the inner box vertical surface 4e1 and inclined so as to be more forward as it goes upward; and an inner case connecting surface 4e3 that smoothly connects the inner case vertical surface 4e1 and the inner case inclined surface 4e 2.

The surface having a larger inclination with respect to the vertical direction as going upward is not limited to the surface in which the inner box vertical surface and 1 inner box inclined surface are connected as described above, and may be a surface in which a plurality of inner box inclined surfaces having different inclinations with respect to the vertical direction are connected in an up-down arrangement so as to have a larger inclination with respect to the vertical direction as going upward, for example; a surface in which a plurality of inner box inclined surfaces having different inclinations in the up-down direction are connected in an up-down arrangement so as to be inclined more upward than in the up-down direction without providing an inner box vertical surface; a surface that is curved gradually so as to incline upward with respect to the vertical direction more greatly. In the above-described embodiment, the inner box vertical surface and the inner box inclined surface are smoothly connected via the inner box connecting surface, but the inner box vertical surface and the inner box inclined surface may be directly connected without any other member or may be directly connected with inclined surfaces having different inclinations in the up-down direction without any connecting surface.

The portion of the inner box left side surface 4a, the inner box right side surface 4b, and the inner box upper surface 4c that divides the upper storage chamber 6c is connected to the inner box rear surface 4e via the connection 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 chamber 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 connecting portion 4 f.

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

The step portion 4g includes: a curved surface 4g1 connected to the rear ends of the front extension surfaces 4a, 4b, 4 c; and a flat surface 4g2 extending in the backward direction from the rear end of the curved surface 4g 1. The curved surface 4g1 is formed of a curved surface that expands rearward so as to be more rearward than inward of the upper storage chamber 6 c. The curved surface 4g1 has a common tangent line at the connection 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 formed of a flat surface extending in the tangential direction from the rear end of the curved surface 4g1, and a concave formation portion 4h is connected to the rear end thereof.

The concave forming portion 4h includes: a rear extension 4h1 bent from the rear end of the plane 4g2 toward the rear and extending rearward; and an inclined portion 4h2 inclined from the rear end of the rear extension portion 4h1 so as to be more inward in the width direction as going rearward.

As shown in fig. 3 and 11, the concave portion 4h is provided with a plurality of inner case engaging portions 4i which are engaged with engaging 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 step portion 4g in the front-rear direction. The angle θh of the inclined portion 4h2 with respect to the concave formation portion 4h in the front-rear direction is smaller than the angle θg of the plane 4g2 with respect to the step portion 4g in the front-rear direction, and the inclined portion 4h2 extends in the front-rear direction more than the plane 4g2 (see fig. 10).

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

As shown in fig. 7 to 8, a pair of left and right handles 35 are provided at left and right upper ends of the outer case back surface 3 e. The left and right handle portions 35 each include: a hollowed-out portion 35a recessed forward from the outer case back surface 3 e; and a grip portion 35b forming an upper surface opening communicating with the hollowed-out portion 35 a. In a rear view as shown in fig. 8, the hollowed-out portion 35a is formed with a relief portion 35c recessed outward in the width direction at a lower corner portion inward in the width direction of the refrigerator 1. Further, a substrate housing portion 60 for housing the control substrate 70 and the electric component 71 is provided between the left and right handle portions 35 at the upper end portion of the outer case rear surface 3 e.

(3) Substrate accommodating portion 60

Next, the structure of the substrate housing portion 60 will be described mainly with reference to fig. 6 to 8. The substrate housing portion 60 has a flat disk shape with a rear opening in the front-rear direction. The substrate housing portion 60 is disposed behind the inner case inclined surface 4e2 such that the housing portion bottom surface 61 constituting the bottom surface thereof is opposed to the inner case inclined surface 4e2 in the front-rear direction via a heat insulating material.

Specifically, as shown in fig. 7 and 8, the housing portion bottom surface 61 includes: a substrate mounting surface 61a provided on the lower side and having a substantially rectangular shape in view of the rear surface; and a component mounting surface 61b provided on an upper side of the substrate mounting surface 61 a. The component mounting surface 61b is provided between the pair of handle portions 35 so as to overlap the pair of left and right handle portions 35 in the left-right direction, and has a shape in which the width becomes narrower as it goes upward.

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

The substrate mounting surface 61a, like the inner case inclined surface 4e2 located in front of it, forms a housing portion inclined surface inclined so as to be inclined forward as going upward. The component mounting surface 61b constitutes an extension surface extending from the upper end of the substrate mounting surface 61a in parallel with the vertical direction, and is provided forward of the substrate mounting surface 61 a.

In the present embodiment, the inclination angle θ1 with respect to the substrate attachment surface 61a in the up-down direction is set smaller than the inclination angle θ2 with respect to the inner case inclined surface 4e2 in the up-down direction. The inclination angle θ1 of the substrate mounting surface 61a is not limited to be smaller than the inclination angle θ2 of the inner case inclined surface 4e2, and may be the same as the inclination angle θ2 of the inner case inclined surface 4e2 or larger than the inclination angle θ2 of the inner case inclined surface 4e 2.

In the present embodiment, the substrate mounting surface 61a is disposed so as to face the inner case inclined surface 4e2 in the front-rear direction as a whole, and the substrate housing portion 60 is disposed on the outer case rear surface 3e so that the upper portion of the component mounting surface 61b faces the connecting portion 4f of the inner case 4 in the front-rear direction.

The control board 70 is mounted on the board mounting surface 61a so 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 provided in the refrigerator main body 2 in a tilted state in which the printed board 70a is tilted forward as it goes upward.

As shown in fig. 8, the 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 rear opening of the substrate housing portion 60 is covered with the cover 64 in a state where the control substrate 70 and the electric component 71 are housed therein. The cover 64 is fixed to the outer case back surface 3e by a fixing member 65 such as a screw. In this way, the cover 64 is positioned forward of the rear end of the grip portion 35b of the handle portion 35 in a state of being fixed to the outer case rear surface 3e.

(4) Control board 70 and electric component 71

Next, the configuration 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 members 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 a rectifier circuit, and is connected to an electric component 71 mounted on the component mounting surface 61b, on the printed board 70 a.

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

Such a control board 70 is mounted on the board mounting surface 61a such that the high-level member 72a is located above the central portion in the vertical direction of the printed board 70a. In the present embodiment, as shown in fig. 8, at least a part of the high-rise member 72a is mounted on the printed board 70a so as to be positioned below the electric component 71 mounted on the component mounting surface 61 b.

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

The control board 70 is connected to a power supply line 73 for supplying power from the outside, and is connected to a1 st board wire 74a and a2 nd board wire 74b, and the 1 st board wire 74a and the 2 nd board wire 74b have 1 or more wires for supplying power and communicating signals to sensors and electric devices provided in the refrigerator 1.

The 1 st substrate wire 74a is connected to the device wires 75a, 75b, 75c, 75d connected to the refrigerator temperature sensor 36, the freezer temperature sensor 37, the cooler fan 22, the refrigerator shutter 25, the freezer shutter 27, the operation panel 39, and the lighting device 80, and supplies power or transmits/receives signals to/from these sensors and electric devices.

The 1 st substrate wire 74a enters the heat insulating space 5 of the refrigerator main body 2 from the substrate housing portion 60 through the 1 st insertion hole 62 provided in the component mounting surface 61b, is led out to the casing 38 through one of the left and right sides (for example, left side) of the rear portion of the heat insulating space 5, and is connected to the device wires 75a, 75b, 75c, 75d via connectors in the casing 38.

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

(5) Rear wall member 40

As shown in fig. 4 to 6, the rear wall member 40 provided in the interior of the refrigerator compartment 6 includes: a rear wall plate 41 constituting a front portion thereof; a flow path forming member 42 attached to the back surface of the rear wall plate 41; and protruding strips 52a, 52b protruding rearward from the rear surface of the rear wall plate 41.

The rear wall plate 41 is formed of a plate-like body that divides the rear surface of the upper storage chamber 6c, and the front surface thereof is formed of a surface that is inclined more upward with respect to the vertical direction.

Specifically, the rear wall plate 41 has, on the front face: a vertical surface 41a extending from the lower end of the refrigerating chamber 6 in parallel with the vertical direction; an inclined surface 41b provided above the vertical surface 41a and inclined so as to be more forward as it 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 constituted by a surface in which the vertical surface 41a and the inclined surface 41b having different inclinations with respect to the vertical direction are vertically aligned so as to have a larger inclination with respect to the vertical direction as they go upward, and are connected via the connecting surface 41 c.

The surface having a larger inclination with respect to the vertical direction as going upward is not limited to the surface having a vertical surface connected to 1 inclined surface as described above, and for example, a surface having a vertical surface connected to a plurality of inclined surfaces having different inclinations with respect to the vertical direction in such a manner that the inclination with respect to the vertical direction increases as going upward may be arranged vertically; a surface to which a plurality of inclined surfaces having different inclinations with respect to the vertical direction are connected in an up-and-down arrangement so that the inclination with respect to the vertical direction increases as the inclination goes upward without providing a vertical surface; a surface that is curved gradually so as to incline upward with respect to the vertical direction more greatly. In the above 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 the inclined surfaces having different inclinations in 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 constant interval in the front-rear direction.

The vertical surface 41a and the inclined surface 41b are formed of flat surfaces having no irregularities in the width direction, and the connecting surface 41c is formed of curved surfaces having no irregularities in the width direction. Here, the flat surface having no irregularities in the width direction and the curved surface having no irregularities in the width direction are surfaces in which the substantial plate thickness of the rear wall plate 41 is not changed and the front and rear surfaces of the rear wall plate 41 are not correspondingly protruded or recessed in the front-rear direction, and include surfaces in which the front surface of the rear wall plate 41 is roughened and the front surface of the rear wall plate 41 is provided with marks or textures so that the plate thickness of the rear wall plate 41 is changed.

The uppermost plane among the planes dividing the rear surface of the upper storage chamber 6c in the rear wall plate 41 is provided longer in the up-down direction than the other planes. In the present embodiment, a portion (hereinafter, this portion may be referred to as a "vertical surface upper portion") 41a1 of the vertical surface 41a above the lowermost shelf 12a and the inclined surface 41b divide the rear surface of the upper storage chamber 6c, and a height h1 in the vertical direction of the uppermost inclined surface 41b is set to be longer than a height h2 in the vertical direction of the 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 more greatly by a curved surface or a flat surface than the rear corner 41 e.

As shown in fig. 2 and 4, cut portions 45a and 45b are provided on left and right sides of a lower end portion of the rear plate 41 dividing the rear surface of the lower storage chamber 6b, while leaving a portion covering the front surface of the flow path forming member 42. The water supply device 31 and the casing 38 are disposed in the cutout 45a on one side, and the communication hole 17 for communicating the refrigerating compartment 6 with the vegetable compartment 7 is provided below the cutout 45b on the other side.

When such a rear wall plate 41 is attached to the inside of the refrigerator compartment 6 as shown in fig. 2, the entire surface of the inner box back surface 4e and the concave portion 4h provided outside thereof, and a part of the stepped portion 4g provided outside of the concave portion 4h are covered from the front in the upper storage compartment 6 c.

Specifically, as shown in fig. 2, 3,6, 10, and 11, the rear wall plate 41 is disposed in the upper storage chamber 6c so that the left and right side edges of the rear wall plate 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 plate 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 recess forming portion 4h side (rear side) of the stepped portion 4g of the inner case 4 from the front side, on the left and right sides and above the inner case rear surface 4 e.

A flow passage forming member 42 having a smaller width 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 substantially コ -shaped horizontal cross section and formed of a heat insulating material such as a foamed heat insulating material. The rear end surface 42a of the flow path forming member 42 is in contact with the inner case rear surface 4e via a sealing member such as a soft adhesive tape (see fig. 3). Thus, 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.

In front of the 1 st flow path portion 24b, a blowout 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, and in front of the 2 nd flow path portion 24c, a blowout 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 present embodiment, the width direction central portions of the air outlets 18b and 18c are provided at the width direction central portions of the rear wall plate 41, and are provided at the width direction central portions of the lower side storage chamber 6b and the upper side storage chamber 6 c.

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

The outer protrusion 51a protrudes rearward from the rear surface of the rear wall plate 41 on the outer side in the width direction of the flow passage forming member 42, and is engaged with a holding member 51c (see fig. 6) protruding forward from the inner case rear surface 4e, thereby fixing the rear wall plate 41 to the inner case rear surface 4e. The inner protrusion 51b penetrates the flow path forming member 42 from the rear surface of the rear wall plate 41 and protrudes rearward, and is engaged with a protrusion, not shown, protruding forward from the inner case rear surface 4e, thereby fixing the rear wall plate 41 to the inner case rear surface 4e with the flow path forming member 42 interposed therebetween.

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

The 1 st projection 52a is provided along the rear surface peripheral edge portion of the rear wall plate 41 so as to face the concave formation portion 4h of the inner case 4 with a predetermined interval therebetween in a state where the rear wall member 40 is attached to the refrigerator compartment 6. The 1 st projection 52a is provided with a locking piece 50 at a position facing the inner case engaging portion 4i provided in the concave forming portion 4 h. When the locking piece 50 is engaged with the opposing inner case engagement portion 4i, the peripheral edge of the rear wall plate 41 is fixed to the inner case 4 so as to overlap the plane 4g2 of the step portion 4g of the inner case 4 in the out-of-plane direction of the rear wall plate 41.

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

The thickness of the 1 st and 2 nd protrusions 52a and 52b is set to be smaller than the thickness of the rear wall plate 41.

Further, the rear surface of the rear wall plate 41 is provided with, in addition to the protrusions 51a, 51b and the protrusions 52a, 52b, a claw portion 53 for holding the device wire 75a connected to the operation panel 39, a wire guide portion 54, and a sensor attachment portion 55 for fixing the refrigerator temperature sensor 36 to the rear surface of the rear wall plate 41.

As shown in fig. 4, the rear wall plate 41 is provided with a laterally long rectangular through hole 56 and a cool air introduction window 57 which are long in the left-right direction and which house the operation panel 39. The through hole 56 is provided 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 arranged on the one side in the width direction from the center in the width direction of the refrigerating chamber 6.

(6) Operation panel 39 and refrigerator temperature sensor 36

As shown in fig. 4 and 5, a frame 58 protruding 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 is provided in the lower side of the frame 58 to draw the device wire 75a connected to the operation panel 39 to the outside of the frame 58 on the back surface of the rear wall plate 41. The operation panel 39 is fixed in a state in which the operation buttons and the display portion are stored between the through-hole 56 and the inner box rear surface 4e located behind the through-hole. The operation panel 39 is disposed above the casing 38 provided in the cutout 45a of the rear wall plate 41.

The device lead 75a connected to the operation panel 39 is led out to the lower side of the operation panel 39 through the hole 58a of the housing 58, and routed to the casing 38 along the rear surface of the rear wall plate 41.

Specifically, as shown in fig. 4, 5, and 9, the device wire 75a led out from the hole 58a of the housing 58 to the lower side is bent toward the widthwise central portion (toward the 1 st flow path portion 24 b) at the claw portion 53 provided below the operation panel 39, and routed along the wire guide portion 54. The wire guide 54 is inclined so that the device wire 75a is 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), and guides the device wire 75a to the insertion hole 52b2 provided in the 2 nd projection 52 b.

The device lead 75a enters the inside (the flow path forming member 42 side) of the 2 nd ridge 52b through the insertion hole 52b2, passes through the lead housing portion 59 formed between the 2 nd ridge 52b and the flow path forming member 42, and is routed along the edge portion of the 1 st flow path portion 24b to the lower end of the lower storage chamber 6 b. The device wire 75a is led out to the lower side of the case 38 through the lead-out hole 52b3 provided at the lower end portion of the 2 nd projection 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 refrigerator temperature sensor 36 is fixed to the sensor mounting portion 55. In front of the refrigerator temperature sensor 36, a cool air introduction window 57 penetrating the rear wall plate 41 is provided, and air in the upper storage compartment 6c can contact the refrigerator temperature sensor 36 through the cool air introduction window 47.

The device wire 75b connected to the refrigerator temperature sensor 36 also passes through the insertion hole 52b4 provided in the 2 nd projection 52b, enters the inside of the 2 nd projection 52b, passes through the wire housing 59, is routed to the lower end of the lower storage chamber 6b, and is led out to the lower side of the casing 38 together with the device wire 75a of the operation panel 39 through the lead-out hole 52b3, similarly to the device wire 75a of the operation panel 39.

(7) Casing 38

As shown in fig. 9, the case 38 is constituted by a case having a case main body 38a provided with an opening at the front and a cover 38b closing the opening, and the device leads 75a, 75b enter the case 38 from a lower surface hole 38a1 provided in the lower surface of the case main body 38 a.

In the casing 38, in addition to the device wires 75a and 75b connected to the operation panel 39 and the refrigerator temperature sensor 36, the device wire 75c connected to the freezer temperature sensor 37, the cooler fan 22, the refrigerator barrier 25, and the refrigerator barrier 27, and the device wire 75d connected to the illumination device 80 enter the casing 38 from the lower surface hole 38a 1.

A shielding plate 38b1 protruding downward from the lower end of the cover 38b and toward the 1 st flow path portion 24b is provided in front of the lower surface hole 38a 1. The shielding plate 38b1 shields the device wires 75a, 75b, 75c, 75d entering from the lower surface hole portion 38a1 of the chassis 38 from the front.

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

The 1 st substrate wire 74a which enters the inside of the casing 38 from the back surface hole 38a2 and the device wires 75a, 75b, 75c, 75d which enter the inside of the casing 38 from the lower surface hole 38a1 are connected via connectors inside the casing 38.

(8) Effects of

In the present embodiment described above, since the rear wall plate 41 is formed of the surface inclined more upward with respect to the vertical direction, the rear surface of the upper storage chamber 6c that can be seen from the front is not formed with the concave-convex shape in the vertical direction, and the appearance of the inside of the upper storage chamber 6c can be improved.

In particular, when the front surface of the rear wall plate 41 is formed of a surface inclined so as to be more forward, the upper inner part of the upper storage chamber 6c which is not easily and effectively used can be divided from the rear wall plate 41 forward and backward while suppressing visual discomfort, and a space for disposing the refrigerator components such as the control board 70 is formed rearward. That is, the space for disposing the refrigerator constituent members can be ensured without impairing the substantial storage volume, heat insulating performance, and internal 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 stepped portion 4g in the out-of-plane direction of the rear wall plate 41 and to cover a part of the stepped portion 4g from the front, the peripheral edge of the rear wall plate 41 can be made to approach the stepped portion 4g of the inner box 4 in the left-right direction and the front-rear direction. Thus, the rear wall plate 41 does not appear to be unnaturally abrupt from the inner case 4, but continuously continuous from the front extension surfaces 4a, 4b, 4c via the stepped portion 4g, and the appearance of the inside of the upper storage chamber 6c can be improved.

In the present embodiment, when the front corner 41d of the peripheral edge of the rear wall plate 41 is greatly chamfered by a curved surface or a flat surface as compared with the rear corner 41e, the peripheral edge of the rear wall plate 41 becomes less noticeable, and the appearance of the inside of the upper storage chamber 6c can be improved.

In the present embodiment, when the uppermost inclined surface 41b of the flat surfaces 41a1 and 41b constituting the front surface of the rear wall plate 41 is provided to be longer in the vertical direction, visual violations and feelings caused by 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 chamber 6c, the uneven shape is not formed on the entire rear surface of the upper storage chamber 6c, and the appearance of the inside of the upper storage chamber 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 back surface 4e, the front side peripheral edge portion of the operation panel 39 can be disposed so as to protrude slightly forward from the front surface of the rear wall plate 41 without sacrificing the thickness of the heat insulation space in the refrigerator main body 2, and the operation panel 39 can be emphasized in a beautiful manner, or the front surface of the operation panel 39 and the front surface of the rear wall plate 41 can be disposed so as to form the same surface without a step therebetween, and the degree of freedom in the arrangement of the operation panel 39 can be increased.

In the present embodiment, when the 1 st flow path portion 24b formed between the rear wall plate 41 and the inner box rear surface 4e is disposed on one side in the width direction from 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 increases.

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 mounted on the vertical surface 41a facing the front surface of the refrigerator 1, and the operation panel 39 can be disposed at a position that is easy to operate.

In the present embodiment, when the connecting portion 4f connecting the inner box back surface 4e and the front extension surfaces 4a, 4b, and 4c is provided with the curved surface 4g1 that expands rearward so as to be more rearward toward the inside of the upper storage chamber 6c, and the concave forming portion 4h that forms a concave portion that is recessed rearward between the inner box back surface 4e, deformation of the connecting portion 4f of the inner box 4 when the heat insulating material is foamed and filled into the heat insulating space 5 can be suppressed.

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 case 3 and the inner case 4 are supported by jigs having shapes corresponding to the respective outer sides. At this time, if the curved surface 4g1 is formed in the connecting portion 4f, the shape of the inner case 4 is not easily matched with a jig for supporting the inner case 4 due to an error or the like generated at the time of molding the inner case 4, and the curved surface 4g1 is easily deformed at the time of foam filling. As described above, in the case where the inner case 4 includes the concave portion 4h behind the curved surface 4g1, the shape of the inner case 4 can be easily matched with the jig for supporting the inner case 4, and the curved surface 4g1 can be formed into a beautiful curved shape.

In the present embodiment, when the cooling-side flow path 24 formed between the rear wall plate 41 and the inner box rear surface 4e includes the 1 st flow path portion 24b disposed on one side in the width direction from the center in the width direction of the upper storage chamber 6c and the 2 nd flow path portion 24c disposed on the center in the width direction of the upper storage chamber 6c from the 1 st flow path portion 24b, it is possible to uniformly supply cool air in the width direction of the upper storage chamber 6c while securing a space for disposing the operation panel 39 on the side of the 1 st flow path portion 24b, and perform cooling.

In the present embodiment, when 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 refrigerator temperature sensor 36, the freezer temperature sensor 37, the cooler fan 22, the refrigerator barrier 25, the refrigerator barrier 27, the operation panel 39, and the illumination device 80 are provided in the housing 38 disposed below the operation panel 39, and the 1 st substrate wire 74a connected to the control board 70 is connected to the inside of the housing 38, the length of each wire can be reduced, and the connectors can be connected from the front of the refrigerator, thereby improving the workability.

In the present embodiment, when the device wire 75a is connected to the lower side of the operation panel 39, water condensed on the device wire 75a does not enter the operation panel 39 through the device wire 75 a. When the wire guide 54 for guiding the device wire 75a so as to incline the device wire 75a upward as it moves away from the operation panel 39 is provided in the rear wall plate 41, water condensed on the device wire 75a does not enter the operation panel 39 through the device wire 75 a.

In the present embodiment, since the drawer type water supply tank 30 and the storage container 14 are provided in front of the cabinet 38, the cabinet 38 is not conspicuous when the refrigerator is used, and the appearance of the interior of the refrigerator compartment 6 is not impaired.

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

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

In the present embodiment, when the protruding strips 52a, 52b having a smaller thickness than the plate thickness of the rear wall plate 41 protrude rearward from the rear surface of the rear wall plate 41, deformation such as warpage or twisting of the rear wall plate 41 can be suppressed, and occurrence of sink marks (dents) due to the protruding strips 52a, 52b on the front surface of the rear wall plate 41 can be suppressed.

In the present embodiment, the housing bottom surface 61 of the substrate housing 60 to which the control board 70 and the electric component 71 are attached is disposed so as to face the inner box inclined surface 4e2 that is inclined forward as it goes upward. As a result, in the present embodiment, the upper back of the upper storage chamber 6c is not formed in a concave-convex shape, and the upper back of the upper storage chamber 6c which is not easily and effectively used can be divided forward and backward by the inner box back surface 4e, and the control board 70 and the electric component 71 can be housed behind the upper back. Therefore, a space for disposing the refrigerator constituent members can be ensured without impairing the substantial storage volume, heat insulating performance, and internal appearance of the upper storage chamber 6 c.

In the present embodiment, when the housing bottom surface 61 of the substrate housing portion 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 of the control substrate 70, the electrical component 71 having a height and being easily projected at the time of mounting, such as a reactor, can be disposed above the space easily formed by the inclination of the inner case inclined surface 4e2, and the control substrate 70 and the electrical component 71 can be efficiently provided to the refrigerator main body 2.

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

In the present embodiment, when the control board 70 is attached to the board attachment surface 61a so as to be inclined forward as going upward along the board attachment surface 61a, the control board 70 can be more efficiently provided to the refrigerator main body 2.

In the present embodiment, when the control board 70 is attached to the board attachment surface 61a such that the high member 72a is located above the central portion of the control board 70 in the vertical direction, the high member 72a can be disposed on the board attachment surface 61a at a position biased forward, and the control board 70 can be efficiently provided to the refrigerator main body 2.

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

In the present embodiment, since the insertion holes 62 and 63 for inserting the 1 st and 2 nd substrate wires 74a and 74b connected to the control board 70 into the heat insulating space are provided on the side of the electric component, the lengths of the 1 st and 2 nd substrate wires 74a and 74b can be shortened. Further, in the case where 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 wire 74a and the 2 nd substrate 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 housing portion 60 is provided on the outer case rear surface 3e so that the lower end of the housing portion bottom surface 61 of the substrate housing portion 60 is located above the lower end of the inner case inclined surface 4e2, a space in the front-rear direction required for the substrate housing portion 60 can be ensured even if the inclination angle with respect to the inner case inclined surface 4e2 in the up-down direction is small. Therefore, the rear surface of the upper storage chamber 6c can be gradually inclined to suppress visual violations and feelings, and the interior of the upper storage chamber 6c can be improved in appearance.

In the present embodiment, when the angle θ1 with respect to the substrate attachment surface 61a in the up-down direction is smaller than the angle θ2 with respect to the inner case inclined surface 4e2 in the up-down direction, the angle with respect to the control substrate 70 in the up-down direction can be set smaller. 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 thickened around the electric component 71 such as the reactor that is likely to generate heat.

In the present embodiment, when the component mounting surface 61b extending upward from the substrate mounting surface 61a is located between the pair of handle portions 35 provided at the upper end of the back surface of the refrigerator main body at a distance in the width direction, the space sandwiched by the handle portions 35 at the upper end of the back surface of the refrigerator main body 2 can be effectively utilized.

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

In the above-described embodiment, the step portion 4g constituting the connecting portion 4f has been described as having the curved surface 4g1 connected to the rear ends of the front extension surfaces 4a, 4b, and 4c and the flat surface 4g2 extending in the rear direction from the rear end of the curved surface 4g1, but the present invention is not limited thereto, and the step portion 4g may be provided with only the curved surface 4g1 and the concave portion 4h may be connected to the rear end of the curved surface 4g 1.

In the above embodiment, the case where the peripheral edge portion of the rear wall plate 41 overlaps the stepped portion 4g of the inner case 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 so as to be more forward than upward has been described, but the present invention is not limited to this, and the rear wall plate 41 may be inclined so as to be more rearward than upward.

Claims

1. A refrigerator is provided with:

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

A substrate accommodating part which is provided in a concave shape recessed forward from the upper end part of the back surface of the refrigerator main body; and

A control substrate of the refrigerator is arranged in the substrate accommodating part,

The back surface of the inner box is provided with an inner box inclined surface which is inclined forward more toward the upper direction at the upper end part,

The substrate receiving portion has a receiving portion bottom surface opposed to the inner case inclined surface in front and back,

The bottom surface of the storage section is provided with:

a substrate mounting surface on which the control substrate is mounted, the substrate mounting surface being inclined forward as it goes upward; and

And a component mounting surface on which an electrical component connected to the control board is mounted, the component mounting surface being provided above the board mounting surface and being disposed so as to extend in the vertical direction.

2. The refrigerator of claim 1, wherein,

A cover for covering the inside of the substrate housing portion is fixed to the back surface of the refrigerator main body in parallel with the back surface of the refrigerator main body and the component mounting surface.

3. The refrigerator of claim 1, wherein,

The component mounting surface is formed in a shape having a narrower width as it goes upward.

4. The refrigerator of claim 1, wherein,

The lower end of the bottom surface of the storage part is higher than the lower end of the inclined surface of the inner box.

5. The refrigerator of claim 1, wherein,

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

6. The refrigerator of claim 1, wherein,

The angle of the substrate mounting surface with respect to the up-down direction is smaller than the angle of the inner case inclined surface with respect to the up-down direction.

7. The refrigerator of claim 1, wherein,

The component mounting surface is a plane extending parallel to the up-down direction.

8. The refrigerator of claim 1, wherein,

A pair of handle parts arranged at intervals in the width direction are arranged at the upper end of the back surface of the refrigerator main body,

The component mounting surface is located between the pair of handle portions so as to overlap the pair of handle portions in the left-right direction.