JP2018025349A - refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a refrigerator which can reduce wall thickness by increasing a vacuum heat insulation material area of a back plate part, without hindering injection properties of a foam heat insulation material and increase in lower storage chamber volume.SOLUTION: A refrigerator includes a refrigerator body 1 having a plurality of storage chambers, and a recess part (upper machine chamber 21) provided at a ceiling part rear side of the refrigerator body 1. A back plate 34 of the refrigeration body 1 is a flat plate shape without a chamfered part and a vacuum heat insulation material 52 is installed. An injection hole 36 of a foam heat insulation material 4 is provided above the vacuum heat insulation material 52 of the back plate 34. Thereby, the foam heat insulation material 4 injected from the injection hole 36 can be filled between inner and outer boxes of the refrigeration body 1 by colliding and dispersing at a bottom surface constitution surface of the recess part without being hindered by the vacuum heat insulation material 52, and wall thickness can be reduced by increasing an attaching area of the vacuum heat insulation material 52 on the back surface portion.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a heat insulating configuration of a refrigerator.

  Generally, the main body of a refrigerator is configured by filling a foam heat insulating material between an inner box and an outer box, and further, a vacuum heat insulating material is provided on a side plate portion, a top plate portion, and a back portion between the inner box and the outer box. It is installed and the heat insulation property is improved (for example, refer patent document 1).

  FIG. 25 shows a refrigerator described in Patent Document 1. This refrigerator is provided with a machine room 101 behind the ceiling of a refrigerator main body 100 having a plurality of storage rooms (not shown), and the machine room 101 has a plurality of the machine rooms 101. A compressor of a refrigeration cycle, a condenser (both not shown) and the like for cooling the storage chamber are arranged.

  And the said refrigerator main body 100 is between the inner box 102 and the outer box 103 of the side-plate part, a top-plate part, and a backplate part, as shown in FIG. 26 which shows the refrigerator of the said FIG. The vacuum heat insulating material 104 is installed in the heat insulating material 105 together with the foam heat insulating material 105 made of foamed urethane or the like.

JP2013-83411A

  The conventional refrigerator main body 100 has a heat insulating effect by the vacuum heat insulating material 104 in addition to the heat insulating property by the foam heat insulating material 105, so that a high heat insulating performance can be obtained, and both sides of the main body and the ceiling wall can be thinned to increase the volume of the storage room. There is an advantage that you can.

  However, as is apparent from FIG. 26, the conventional refrigerator main body 100 has chamfered 106 on both sides of the back plate portion, so that the area where the vacuum heat insulating material 104 is attached is small, and the back plate portion is the wall The heat insulation by the foam heat insulating material 105 had to be reinforced by increasing the thickness. And the volume of the storage chamber decreases as the wall thickness increases.

  On the other hand, the refrigerator main body 100 provided with the chamfered portion 106 can be provided with an injection hole 107 for injecting a foam heat insulating material such as urethane foam into the chamfered portion 106, and thereby the vacuum heat insulation pasted on the back plate portion. There is an advantage that the foam heat insulating material can be injected between the inner and outer boxes of the refrigerator main body 100 without being obstructed by the material 104. And what provided the machine room 101 in the ceiling part back of the refrigerator main body 100 also had the advantage that the volume of a lower storage room could be enlarged and usability improved.

  The present invention has been made in view of the characteristics of such a conventional refrigerator, and increases the vacuum heat insulating material area of the back plate part without hindering the injection property of the foam heat insulating material and the increase in the volume of the lower storage chamber. The purpose is to provide a refrigerator with a reduced wall thickness.

In order to solve the above-described conventional problems, the refrigerator of the present invention includes a refrigerator body having a plurality of storage chambers, and a recess provided at the rear of the ceiling of the refrigerator body, and the back plate of the refrigerator body has a chamfered portion. A vacuum heat insulating material is installed as a flat plate shape without an opening, and an injection hole for foamed heat insulating material is provided above the vacuum heat insulating material on the back plate.

  As a result, the foam insulation injected from the injection hole can be collided and distributed between the inner and outer boxes of the refrigerator body without being disturbed by the vacuum insulation and filled between the inner and outer boxes of the refrigerator main body, and the vacuum insulation of the rear portion The wall thickness can be reduced by increasing the pasting area. That is, it is possible to reinforce the heat insulating property of the back surface of the refrigerator main body and to increase the internal volume of the refrigerator main body without impairing the injectability of the foam heat insulating material by using the concave portion provided in the main body ceiling.

  The refrigerator of the present invention includes a refrigerator main body having a plurality of storage rooms, a back plate of the refrigerator main body, and a vacuum heat insulating material disposed on the back plate, and the back plate has a flat plate shape without a chamfered portion. As described above, the vacuum heat insulating material is disposed, and the back plate is provided with a protruding portion at a part of its upper end, and the protruding portion is provided with an injection hole for foamed heat insulating material.

  As a result, the foam insulation injected from the injection hole can be filled between the inner and outer boxes of the refrigerator main body without being obstructed by the vacuum insulation, and the wall thickness is reduced by increasing the area where the vacuum insulation is applied to the back portion. can do. That is, it is possible to reinforce the heat insulation of the back of the refrigerator main body and to increase the internal volume of the refrigerator main body without impairing the injectability of the foam heat insulating material by using the protrusion provided on the upper end part of the back plate. .

  The present invention enhances the heat insulating property of the back of the refrigerator body by increasing the vacuum heat insulating material area of the back plate portion without hindering the increase in the foaming heat insulating material injectability and the lower storage chamber volume due to the above configuration, And it can be set as a refrigerator with a small wall thickness and a large internal volume.

The perspective view of the refrigerator in Embodiment 1 of this invention The perspective view which looked at the refrigerator from the back side Vertical section of the refrigerator Refrigeration cycle diagram of the refrigerator Rear view of the refrigerator The perspective view which looked at the upper machine room part of the refrigerator from the back Sectional view of the ceiling of the refrigerator The perspective view which shows the upper machine room part of the refrigerator The perspective view which shows a part of upper machine room part of the refrigerator The perspective view which expands and further shows a part of upper machine room part of the refrigerator Sectional drawing which shows the upper machine room part of the refrigerator Explanatory drawing which shows foaming insulation injection operation of the refrigerator Exploded perspective view for explaining the foaming insulation injection operation of the refrigerator The perspective view which shows the handle part for conveyance of the refrigerator A perspective view when the louver body is removed from the carrying handle portion of the refrigerator Perspective view of the lower machine room of the refrigerator The perspective view which shows the lower machine room part of the refrigerator seen from the bottom side Front view showing the internal configuration of the lower machine room of the refrigerator The perspective view which shows the internal structure of the lower machine room part of the refrigerator Cross-sectional view of the lower machine room of the refrigerator Longitudinal sectional view showing the main part of the lower machine room of the refrigerator The perspective view which shows the roller installation part for a movement of the refrigerator seeing from the downward direction The perspective view which shows the roller installation part for a movement of the refrigerator seeing from the inside of a main body The enlarged plan view which shows the roller installation part for the movement of the refrigerator Rear perspective view of a conventional refrigerator ZZ sectional view of FIG. 25 showing a conventional refrigerator

  1st invention is equipped with the refrigerator main body which has several storage chambers, and the recessed part provided in the ceiling part back of the said refrigerator main body, and the vacuum insulating material is installed in the back plate of the said refrigerator main body as a flat form without a chamfering part. In addition, an injection hole for the foam heat insulating material is provided above the vacuum heat insulating material on the back plate.

  As a result, the foam insulation injected from the injection hole can be collided and distributed between the inner and outer boxes of the refrigerator body without being disturbed by the vacuum insulation and filled between the inner and outer boxes of the refrigerator main body, and the vacuum insulation of the rear portion The wall thickness can be reduced by increasing the pasting area. That is, it is possible to reinforce the heat insulating property of the back surface of the refrigerator main body and to increase the internal volume of the refrigerator main body without impairing the injectability of the foam heat insulating material by using the concave portion provided in the main body ceiling.

  2nd invention is equipped with the refrigerator main body which has several storage chambers, the back plate of the said refrigerator main body, and the vacuum heat insulating material arrange | positioned at the said back plate, The said back plate is said as flat form without a chamfer part, While the vacuum heat insulating material is disposed, the back plate is provided with a protruding portion at a part of its upper end, and the protruding portion is provided with an injection hole for foamed heat insulating material.

  As a result, the foam insulation injected from the injection hole can be filled between the inner and outer boxes of the refrigerator main body without being obstructed by the vacuum insulation, and the wall thickness is reduced by increasing the area where the vacuum insulation is applied to the back portion. can do. That is, it is possible to reinforce the heat insulation of the back of the refrigerator main body and to increase the internal volume of the refrigerator main body without impairing the injectability of the foam heat insulating material by using the protrusion provided on the upper end part of the back plate. .

  According to a third invention, in the first or second invention, a lid member is provided on the inner surface side of the injection hole of the back plate, and the lid member is positioned between the bottom surface of the recess and the step for forming the recess of the inner box. It has been made.

  Thereby, the lid member can be rotated to the space side formed between the bottom surface of the recess and the step for forming the recess of the inner box with the upper or lower side as a fulcrum, from the injection pipe inserted into the injection hole It is possible to prevent the foamed heat insulating material from being obstructed by the lid member and to enable good injection.

  According to a fourth aspect of the present invention, in the first to third aspects, the refrigerator main body is provided with an injection hole at a lower portion of the back plate portion, and a lower end portion of the vacuum heat insulating material lacks a portion facing the injection hole. is there.

  Thereby, it is possible to inject the foam insulation from the lower part of the back plate part, and the vacuum insulation material is installed below the back plate part without hindering the flow of the foam insulation material injected from the lower injection hole. It is possible to reinforce the heat insulating property of the back surface portion and promote thinning, thereby further increasing the internal volume.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
1 to 6 are diagrams for explaining the entire refrigerator and the configuration of each part, FIGS. 7 to 13 are diagrams for explaining the thermal insulation configuration of the refrigerator body and the injection configuration of the foam insulation, and FIGS. 14 and 15 are transporting the refrigerator body. FIG. 16 to FIG. 21 are diagrams for explaining the handle structure, and FIGS.
FIG. 24 is a diagram for explaining a moving roller installation configuration of the refrigerator main body.

(1. Overall configuration of refrigerator)
First, the whole structure of a refrigerator is demonstrated using FIGS.

  1 to 6, a refrigerator main body 1 includes a metal (for example, iron plate) outer box 2, a hard resin (for example, ABS) inner box 3, and these outer boxes as shown in FIG. 2 and a foam heat insulating material 4 such as hard urethane filled between the inner box 3 and the inner box 3. The refrigerator body 1 is provided with vacuum heat insulating materials 51 (not shown), 52 and 53 on the side, back and ceiling surfaces between the outer box 2 and the inner box 3. The heat insulation structure of the refrigerator body 1 and the filling structure of the foam heat insulating material 4 will be described later.

  The refrigerator body 1 includes a plurality of storage rooms, for example, a refrigeration room 6, a switching room 7 located under the refrigeration room 6, an ice making room 8 arranged next to the switching room 7, a switching room 7, It has a freezer compartment 9 located in the lower part of the ice making room 8 and a vegetable compartment 10 located in the lower part of the freezer compartment 9, and can be opened and closed by doors 11, 12, 13, 14, 15.

  The refrigerator body 1 is provided with a cooling chamber 16, and is provided with a cooler 17 that generates cool air and a cool air circulation fan 18 that supplies the cool air to each chamber. A defrosting means 19 such as a heater is provided below the cooler 17.

  The refrigerator body 1 is provided with a duct 20 for supplying cold air to the refrigerator compartment 6, the freezer compartment 9, the vegetable compartment 10, etc., and a temperature detection sensor (not shown) provided in the refrigerator compartment 9 or the refrigerator compartment 6 or the like. The chamber is cooled to a predetermined temperature by opening / closing a damper or the like (not shown) based on the output from

  Further, an upper machine room 21 as a recess is provided at the rear of the ceiling of the refrigerator body 1, and a lower machine room 22 is provided at the lower part. A compressor 23 is installed in the upper machine chamber 21, and as shown in FIG. 4, the compressor 23, a condenser 24, a heat radiating pipe 25, a capillary tube 26, and the cooler 17 described above are sequentially connected in an annular shape. Thus, a refrigeration cycle is configured, and a cooling operation is performed by enclosing a refrigerant in the refrigeration cycle.

  In the present embodiment, the concave portion behind the ceiling portion is described as an example in which a compressor, a condenser, and the like are disposed inside the upper machine room 21, but is not limited thereto, and is not limited to this. It can be applied as long as it is provided with a recess provided in the.

  In this embodiment, a part of the heat radiating pipe 25 is divided into a heat radiating pipe 25a for preventing condensation and a bypass heat radiating pipe 25b provided on the back and side surfaces of the refrigerator main body 1 through a three-way valve 27. Each of the branches is connected to strainers 28a and 28b (28a is a dryer having a drying function) and capillary tubes 26a and 26b, and then connected to the cooler 17, and is provided outside the refrigerator main body 1 at an appropriate place. The flow of the refrigerant is switched based on outputs from the temperature sensor and the outside air humidity sensor.

  Specifically, although the refrigerant is normally flowing to the heat radiation pipe 25a for preventing condensation, environmental conditions in which condensation is unlikely to occur at the front opening of the refrigerator main body 1 based on outputs from the outside air temperature sensor and the outside air humidity sensor. If it judges that, it will flow a refrigerant | coolant to the bypass heat radiating pipe 25b side, the heat absorption amount into the store | warehouse | chamber from the front opening part will be reduced, and energy saving is aimed at.

The resistance values (pressure reduction amounts) of the capillary tube 26a on the dew condensation prevention heat radiation pipe 25a side and the capillary tube 26b on the bypass heat radiation pipe 25b side are set based on the optimization of the cooling system design configured independently. In the present embodiment, the resistance value of the capillary tube 26b on the bypass heat radiating pipe 25b side is set slightly larger than the capillary tube 26a on the dew condensation prevention heat radiating pipe 25a side.

  When the deviation rate between the temperature in the refrigerator compartment 6 or the freezer compartment 9 and the set temperature is large, both sides of the three-way valve 27 are opened, and the capillary tube 26a on the dew condensation prevention radiation pipe 25a side and the capillary tube on the bypass radiation pipe 25b side are opened. The refrigerant may be flowed on both sides of 26b, and the cooling capacity may be increased by increasing the refrigerant circulation amount.

  A control unit 29 for controlling the operation of the refrigerator is incorporated in the front part of the upper machine room 21 behind the refrigerator body 1 ceiling, and a vacuum heat insulating material 53 is provided so as to block heat from the control unit 29. The heat insulation configuration will be described later together with the description of the heat insulation configuration of the refrigerator body 1.

  The lower machine room 22 below the refrigerator main body 1 is provided with an evaporating dish 30 for storing defrosted water defrosted by the defrosting means 19 below the cooling chamber 16. The frost water is evaporated by a defrosting fan 31 (see FIG. 18 and the like), and the detailed configuration thereof will be described later.

  Furthermore, a refrigerator carrying handle 32 (see FIG. 14) is provided on both sides of the upper machine chamber 21 of the refrigerator body 1, and a moving roller 33 (see FIG. 22) is provided on both sides of the lower machine chamber 22. Are provided so that the refrigerator main body 1 can be easily transported and moved.

(2. Heat insulation structure of the refrigerator body and foam insulation filling structure)
First, the heat insulation structure of a refrigerator main body and a foam heat insulating material filling structure are demonstrated using FIGS.

  As described above, the refrigerator main body 1 is configured by filling the foam heat insulating material 4 between the outer box 2 and the inner box 3 and installing the vacuum heat insulating materials 51, 52, 53. As shown in FIG. 2 and the like, the back plate 34 has a flat plate shape without chamfered portions on both sides. And the upper machine room 21 provided in the ceiling part back of the refrigerator main body 1 is a machine room wall 35 (refer FIG. 8, FIG. 13, etc.) to the machine room formation step part 3a of the inner box 3, as shown in FIG. The upper portion of the back plate 34 is fixed to the rear end portion of the machine room wall 35 by screws or the like.

  As shown in FIG. 5 and the like, the back plate 34 includes projecting pieces 34a projecting upward on both sides of the upper end thereof, and as shown in FIG. 11, a step 3a for forming a machine room of the inner box 3 of the projecting piece 34a. An injection hole 36 for injecting a foam heat insulating material is formed at a position facing the rear end corner portion 3b between the bottom surface of the machine chamber wall 35. Further, the back plate 34 is provided with lower injection holes 36a on both lower side portions thereof as shown in FIG.

  Further, the vacuum heat insulating material 52 installed on the back surface of the main body has a width that is almost full of the back plate 34 as shown by a broken line in FIG. 2, and the upper end thereof is the machine of the inner box 3 as shown in FIG. The chamber forming step 3a is positioned up to just below the rear end corner portion 3b, and the lower portion is configured such that both side portions facing the lower injection hole 36a are missing 34b.

  A control unit 29 for controlling the operation of the refrigerator is provided on the ceiling surface in front of the upper machine room 21 of the refrigerator body 1. As shown in FIG. 7, the control unit 29 is configured by fitting a control box 37 into an opening provided on the top surface of the outer box 2 and providing a control block 38 in the control box 37. Covered by.

  Here, the refrigerator main body 1 is provided with a vacuum heat insulating material 53 on the ceiling surface to insulate it with the foam heat insulating material 4, but the top surface of the outer box 2 has an uneven shape by fitting the control box 37 or the like. Therefore, on the inner surface of the ceiling, a polystyrene foam plate 40 is installed as a molded heat insulating member processed into a shape along the uneven shape.

  In addition, although this Embodiment demonstrates by using the foamed polystyrene board 40 as an example of a shaping | molding heat insulation member, it is not limited to this, If it is a shaping | molding heat insulation member which has the same function, it is applicable.

  This foamed polystyrene board 40 has a surface on the side opposite to the control unit 29 side substantially planar, and a vacuum heat insulating material 53 is installed on the substantially planar part, and the ceiling surface including the control unit 29 is formed as a single flat plate. The vacuum heat insulating material 53 is used.

  Further, the polystyrene foam plate 40 is installed in an inclined manner with respect to the top surface of the outer box 2, and in this example, is installed in an inclined manner so as to follow the rearward downward inclination of the inner box top surface that is produced when the inner box of the refrigerator body 1 is molded. is there.

  In the present embodiment, a part of the heat radiating pipe 25 is laid on the top surface of the outer casing of the refrigerator main body 1, and the foamed polystyrene plate 40 covers the bypass heat radiating pipe 25 b together with the control unit 29. is there.

  The refrigerator body 1 is insulated with the foam heat insulating material 4 by installing a vacuum heat insulating material 54 between the machine room wall 35 and the inner box 3 of the upper machine room 21 provided behind the ceiling. . The vacuum heat insulating material 54 provided on the inner box side portion of the machine room wall 35 is installed in a substantially L-shape along the machine room wall 35, and an upper end 54 a of the foamed polystyrene plate 40. The machine room side end 53a of the vacuum heat insulating material 53 installed on the substantially planar portion overlaps the horizontal projection plane.

  In the present embodiment, the upper machine chamber 21 includes the compressor 23, the condenser 24, the compressor cooling fan 41, the dew condensation prevention heat radiation pipe 25a and the bypass heat radiation pipe 25b together with the compressor 23 as shown in FIGS. The strainers 28a and 28b are arranged, and the pipe connecting them is fixed to the fan mounting unit 42 that fixes the fan 41 to the upper machine chamber 21 to suppress vibration. The left and right heat radiating pipes 25 disposed on the left and right side plates of the refrigerator body 1 are also welded and connected in the upper machine room 21. Further, the strainers 28a and 28b are positioned on the upstream side of the fan 41 so as to be cooled by air suction by the fan 41.

(3. Defrosted water evaporation configuration)
Next, the evaporation structure of the defrost water defrosted by the defrosting means 19 is demonstrated using FIGS.

  The lower machine room 22 in which the evaporating dish 30 is installed is covered with a lower machine room cover 43 on the back side, and the evaporating dish 30 and the evaporating dish 30 are placed in the lower machine room 22 covered with the lower machine room cover 43. An evaporating fan 31 is provided to supply air on the surface of the defrost water to promote evaporation.

  The lower machine chamber cover 43 is provided with an intake port 44 for sucking outside air by the rotation of the evaporation fan 31 and an exhaust port 45 for exhausting the air after evaporation of defrost water to the outside.

The intake port 44 and the exhaust port 45 are provided separately on the right side and the left side of the lower machine room cover 43.
Further, a portion of the lower machine room cover 43 provided with the intake port 44 and the exhaust port 45 is recessed forward, and a recess 48 is formed in the side plate 47 portion on the left and right sides of the refrigerator body 1 facing the recess 46. And an air passage 49 connected to the intake port 44 and the exhaust port 45 from the recess 48 is formed. In this example, a concave groove that becomes a recess 46 is continuously formed in the lateral direction of the lower machine chamber cover 43, and an intake port 44 and an exhaust port 45 are provided at the left and right ends of the concave groove, and a side plate that faces the concave groove. A recess 48 is provided in a rear edge portion of the 47 to form an air passage 49 that leads from the recess 48 to the intake port 44 and the exhaust port 45.

  Further, as shown in FIG. 17, an auxiliary intake port 56 and an auxiliary exhaust port 57 are provided on the bottom surface of the lower machine chamber 22 from the front side through a gap formed between the bottom of the refrigerator main body and the floor surface. The air can also be sucked and exhausted.

  Further, the evaporating fan 31 for evaporating the defrosted water is disposed obliquely with respect to the depth direction of the evaporating dish 30 as shown in FIG. 20, and its lower end is substantially the same as the upper end of the evaporating dish 30 as shown in FIG. It is installed so that it is at a height. The evaporating fan 31 is attached to the evaporating dish 30 by attaching a fan holding plate 31a to the inner surface of the lower machine chamber 22 as shown in FIG. 20, and the periphery of the fan holding plate 31a is sealed to the upstream side. Care has been taken to prevent downstream short circuits. A wind direction plate 58 is provided on the downstream side of the evaporating fan 31 to flow the wind from the evaporating fan 31 toward the defrosting water surface in the evaporating dish 30.

  In the present embodiment, the lower machine room 22 is provided with a three-way valve 27 for switching between the dew condensation prevention heat radiation pipe 25a and the bypass heat radiation pipe 25b described in the refrigeration cycle circuit, and thereby the three-way valve 27 and the upper machine room. Therefore, the length of the dew condensation prevention heat radiation pipe 25a and the bypass heat radiation pipe 25b connecting the strainers 28a and 28b installed in 21 can be increased, and the amount of heat radiation can be increased to improve the energy saving performance.

  Further, the three-way valve 27 is provided on the upstream side of the evaporation fan 31, thereby preheating the defrost water evaporation air sucked by the evaporation fan 31 with the heat of the refrigerant flowing in the three-way valve 27 to evaporate. Can be promoted. Further, a part of the heat radiating pipe is routed in the evaporating dish 30 to heat the defrost water, thereby further increasing the evaporation effect of the defrost water.

  Further, the three-way valve 27 is fixed in the lower machine chamber 22 via a valve holder (not shown), and vibrations of the three-way valve 27 transmitted directly to the lower machine chamber 22 are transmitted to the lower machine chamber 22. There are also considerations to suppress this.

  Further, the welding of the three-way valve 27 to the dew condensation heat-radiating pipe 25a and the bypass heat-dissipating pipe 25b is not shown, but is performed at a position where the three-way valve 27 is vertically displaced on the refrigerant inlet side and the heat-radiating pipe outlet side, respectively. It is. In addition, the heat radiation pipe outlet from the three-way valve 27 to the back of the main body disposed on the back side of the refrigerator main body is bent forward and connected to the three-way valve 27. That is, workability is improved by securing the connection of each pipe in a three-dimensional arrangement, and the depth of the lower machine room 22 can be reduced.

  The connector (not shown) of the three-way valve 27 and the evaporation fan 31 is connected to the connector of the wiring from the control unit 29 drawn out from the foam heat insulating material 4 of the refrigerator body 1 in the lower machine chamber 22. As a result, workability is improved.

(4. Refrigerator body carrying handle configuration and moving roller installation configuration)
Next, with reference to FIGS. 14, 15, and 22 to 24, the conveyance handle configuration and the moving roller installation configuration of the refrigerator body will be described.

  First, the structure of the transport handle of the refrigerator body 1 will be described with reference to FIGS. 14 and 15. The handle 32 for transporting the refrigerator is formed by integrally forming a handle portion 60 on a cover portion 59 that covers the upper machine chamber 21. It is.

  This handle 32 is formed of ABS resin or the like, and is screwed to the machine chamber wall 35 in a state where it is connected to both sides of a separate metal machine chamber cover 61, and the cover 59 serves as a recess. The upper machine room 21 is covered.

  Further, as clearly shown in FIG. 11, the handle portion 60 of the handle 32 is provided so as to protrude upward from the ceiling surface of the refrigerator body 1, and the upper end thereof is substantially the same height as the upper end of the upper machine chamber 21. As it is. In this example, the upper end of the control unit 29 provided on the ceiling surface of the refrigerator body 1 is also substantially the same height.

  Further, as shown in FIG. 15, the cover portion 59 of the handle 32 has a vent hole 62 formed on the upper surface thereof, and a louver body 63 is mounted on the upper portion thereof. The louvers of the louver body 63 are directed forward on the right and left sides of the upper machine chamber 21, respectively, and fresh air is sucked in from the front on the right side when viewed from the back, so that the compressor 23 and the like in the upper machine chamber 21 are By cooling and exhausting to the left front, the exhaust heat efficiency in the upper machine chamber 21 is enhanced. Further, a spare vent 64 is also provided on the back surface portion of the cover portion 59 to enhance the exhaust heat efficiency in the upper machine chamber 21.

  In the present embodiment, the concave portion behind the ceiling portion is described as an example in which a compressor, a condenser, and the like are disposed inside the upper machine room 21, but is not limited thereto, and is not limited to this. It can be applied as long as it is provided with a recess provided in the.

  Next, the roller installation structure for moving the refrigerator main body will be described with reference to FIGS.

  The rollers 33 are provided so as to be supported within the projected area of the refrigerator main body 1 so as to be positioned on both sides of the rear portion of the refrigerator main body 1.

  More specifically, as shown in FIGS. 22 and 23, the refrigerator body 1 first connects the rear portions of the left and right side plates 47 with connecting beams 65, and the lower ends of the side plates 47 have reinforcing beams 66 serving as reinforcing members. The connecting beam 65 and the reinforcing beam 66 are screwed and connected as shown in FIG. 24 to enhance rigidity.

  An opening 67 is formed in the inner edge side portion of the connecting beam 65, and a roller support member 68 is screwed and fixed to the opening 67 to support the roller 33. As a result, the roller 33 is pivotally supported so as to be positioned within the projected area of the refrigerator body 1.

  Here, as shown in FIG. 24, when the inner end edge of the reinforcing beam 66 is a reference line X, the distance Y between the reference line X and the side surface of the roller 33 is preferably as narrow as possible in terms of the support strength with respect to the weight of the main body. However, it is preferable to set at least smaller than 1/2 of the width dimension L of the roller 33. In this example, the inner end edge of the reinforcing beam 66 is slightly cut to provide a reference for the inner end edge of the reinforcing beam 66. The distance Y between the line X and the side surface of the roller 33 is set to be close to zero.

  The roller support member 68 is configured to be screwed from the lower surface (back surface) side of the connecting beam 65 so that the wall of the refrigerator main body 1 filled with the foam heat insulating material 4 is positioned on the upper projection surface. It is configured.

  About the refrigerator comprised as mentioned above, the operation | movement and an effect are demonstrated below.

  First, the cooling of the refrigerator will be briefly described. The refrigerator drives the compressor 23 and the cold air circulation fan 18 when the temperature of the refrigerator compartment 6 and the like becomes higher than a set temperature due to intrusion heat from outside air, door opening and closing, and the like, and cool air generated by the cooler 17 is cooled by the cold air circulation fan. 18 is supplied to the downstream side.

  The cold air supplied to the downstream side of the cold air circulation fan 18 is supplied to the storage rooms such as the refrigerator compartment 6, the vegetable compartment 10, and the freezer compartment 9 through the duct 20 to cool each compartment. The cool air supply to each chamber is controlled by a damper to cool each to a set temperature.

  Here, as shown in FIG. 2 and FIG. 5, the refrigerator main body 1 of the present embodiment is configured such that the back plate 34 has a flat plate shape without a chamfered portion, and the area where the vacuum heat insulating material 52 is pasted on the back surface of the main body Since the width of 34 is almost full, the heat insulating property on the back of the refrigerator main body is stronger than that of the conventional one provided with a chamfered portion.

  Therefore, the cooling effect of each room in the refrigerator main body 1 becomes high, and the heat intrusion from the outside air into each room can be effectively suppressed to improve the energy saving performance.

  Moreover, since the wall thickness of the back part of the main body can be made thin by making the vacuum heat insulating material 52 wide as much as the full width of the back plate 34 as described above, the internal volume of the refrigerator main body 1, that is, The volume of each storage room such as the refrigerator compartment 6, the vegetable compartment 10, the freezer compartment 9 and the like can be increased.

  In particular, in the refrigerator in which the machine room in which the compressor 23 and the like are provided is provided at the rear of the ceiling of the refrigerator body 1 as in the present embodiment, the volume of the vegetable room 10 serving as a storage room at the lower part of the body is the compressor 23. The volume increasing effect is great in combination with the volume increasing effect due to the machine room provided with the rear of the ceiling portion of the refrigerator main body 1, and the storage capacity can be greatly improved.

  Moreover, even if the back plate 34 of the refrigerator main body 1 has a flat plate shape without a chamfered portion, the rear end corner portion 3b of the upper machine chamber 21 positioned above the upper end of the vacuum heat insulating material 52 on the main body back portion, Since the projecting piece 34a is provided at the opposing position and the injection hole 36 of the foam heat insulating material 4 is provided, the foam heat insulating material 4 from the injection hole 36 is not obstructed by the vacuum heat insulating material 52 and the inner box 3 and the outer box. 2 and can be foamed.

  More specifically, the foam insulation 4 is injected into the refrigerator body 1 with the opening of the refrigerator body 1 facing downward as shown in FIG. 12, but the foam insulation 4 injected from the injection hole 36 is shown in FIG. After flowing from the rear end corner portion 3b on the bottom surface of the upper machine chamber 21 toward the opening side as indicated by an arrow A, it flows in a dispersed manner and foams as indicated by arrows B to E.

  At this time, as shown in FIG. 11, the upper end of the vacuum heat insulating material 52 on the back surface of the main body is located below the rear end of the bottom surface of the upper machine chamber 21, that is, below the machine chamber forming step 3 a of the inner box 3. Since it is not located at the rear end corner portion 3b of the bottom surface of the upper machine chamber 21, the foam insulation 4 injected into the bottom rear end corner portion 3b of the upper machine chamber 21 from the injection hole 36 is the arrow A in FIG. It can flow as shown by and can be filled smoothly.

  That is, even if the chamfering of the back surface of the refrigerator main body 1 is eliminated, the foam heat insulating material 4 can be injected without hindrance using the upper machine room 21.

  Therefore, in this refrigerator, the heat insulation of the back surface of the refrigerator main body can be enhanced and the internal volume of the refrigerator main body 1 can be increased without impairing the injectability of the foam heat insulating material 4.

  In addition, the said foaming heat insulating material injection | pouring structure is not restricted to an above described structure, It can also comprise as follows.

  That is, as indicated by the broken line F in FIG. 11, the upper machine room 21 provided behind the ceiling of the refrigerator body 1 is raised only on both sides of the bottom surface, and the back plate 34 of the refrigerator body 1 is on both sides of its upper end. The upper projecting piece 34a protrudes upward to a position facing the raised portions on both sides of the bottom surface of the upper machine chamber 21 so as to overlap the upper machine chamber 21, and the projecting piece overlapped with the upper machine chamber 21. It is also possible to adopt a configuration in which the injection hole 36 is provided in the portion 34a.

  According to this configuration, the foam heat insulating material 4 injected from the injection hole 36 can be filled between the inner and outer boxes 2 and 3 of the refrigerator main body 1 without being obstructed by the vacuum heat insulating material 52 on the back surface of the main body. . Moreover, in this configuration, the vacuum heat insulating material 52 provided in the back plate portion can be provided with its upper end extended upward to the portion 21a directly below the bottom surface of the upper machine chamber 21 by the amount provided for the injection hole 36 above, By further increasing the application area of the vacuum heat insulating material 52, it is possible to enhance the heat insulation of the back surface portion, promote thinning, and promote the increase of the internal volume.

  Further, a lid member 69 is provided inside the injection hole 36 of the back plate 34 as shown in FIGS. 11 and 12, so that the injection hole 36 of the back plate 34 is closed when the foam heat insulating material injection pipe 70 is pulled out. However, since this lid member 69 is located between the machine room wall bottom surface 35a of the upper machine room 21 and the machine room forming step 3a of the inner box 3, Good injection can be made possible without disturbing the flow.

  That is, the lid member 69 is positioned between the bottom surface of the machine room wall of the upper machine room 21 and the machine room forming step 3a of the inner box 3, so that the bottom surface of the upper machine room 21 is supported at either the upper or lower side. Can be turned to the space formed between the inner box 3 and the machine chamber forming step 3a of the inner box 3, and the space is formed long in the turning direction of the lid member 69. Therefore, it can be completely opened along the foam heat insulating material injection pipe 70 inserted into the injection hole 36, and the flow of the foam heat insulating material 4 is not hindered, and good injection is possible.

  Further, in the present embodiment, the refrigerator body 1 is also provided with a lower injection hole 36a in the lower part of the back plate 34, and the lower end portion of the vacuum heat insulating material 52 lacks a portion 34b facing the injection hole. The foam heat insulating material 4 can be injected from the lower part of the back plate 34 without being obstructed by the vacuum heat insulating material 52. Moreover, the vacuum heat insulating material 52 can be installed to the lower side of the back plate portion without hindering the flow of the foam heat insulating material 4 injected from the lower injection hole 36a, and the heat insulating property of the back surface portion of the main body is enhanced and the thickness is reduced. This can be promoted to further increase the internal volume.

  Moreover, as shown in FIG. 7, the refrigerator of this Embodiment has the control part 29 in the ceiling part of the refrigerator main body 1, and in order to insulate the heat | fever of this control part 29 etc., the vacuum heat insulating material 53 Although the refrigerator body 1 is provided with the control unit 29 inside the top surface of the outer box 2, the control unit 29 is provided with a single flat plate-like vacuum heat insulating material 53. The top surface of the outer box including 29 can be covered, and the heat insulation property of the ceiling surface of the refrigerator body can be improved without increasing the cost.

  That is, the top surface of the outer casing of the refrigerator body 1 has irregularities due to the provision of the control unit 29 on the inside of the top surface, and a polystyrene foam plate 40 having a shape along the irregularities is disposed on the inside of the top surface. The opposite side surface of the expanded polystyrene plate 40 is substantially planar, and a vacuum heat insulating material 53 is installed on the substantially planar portion.

Accordingly, the top surface of the outer box can be insulated with a single plate-like vacuum heat insulating material 53 including the control unit 29 without bonding a plurality of vacuum heat insulating materials together to heat the plurality of vacuum heat insulating materials. A heat insulating material can be bonded together to increase the coverage with the vacuum heat insulating material 53 without causing an increase in cost and the like, and the heat insulating property of the refrigerator main body ceiling surface can be improved.

  Further, since the refrigerator main body 1 has a part of the heat radiating pipe 25 laid on the top surface of the outer box, the polystyrene foam plate 40 is configured to cover the control part 29 along the part of the heat radiating pipe 25 as well. .

  Thereby, the heat influence of the refrigerator main body 1 can be suppressed by using the ceiling surface of the refrigerator main body 1 and suppressing the heat influence with the heat influence from the control unit 29 while enhancing the heat radiation performance of the refrigeration cycle.

  Further, the vacuum heat insulating material 53 is installed to be inclined with respect to the top surface of the outer box 2. In this example, the vacuum heat insulating material 53 is inclined in a direction along the rearward downward inclination of the inner box top surface generated when the refrigerator main body 1 is molded. Therefore, the fluidity of the foam heat insulating material 4 between the vacuum heat insulating material 53 and the top surface of the inner box 3 can be improved, and the uniform insulation of the packing density can be promoted to further enhance the heat insulating property of the ceiling surface. it can.

  The refrigerator body 1 is bent along the machine room wall 35 inside the upper machine room 21 provided behind the ceiling, that is, between the machine room wall 35 and the inner box 3 of the upper machine room 21. Since the vacuum heat insulating material 54 is installed in the shape, the bottom surface and the vertical surface of the upper machine chamber 21 can be covered seamlessly, and the coverage of the upper machine chamber 21 by the vacuum heat insulating material 54 can be increased.

  Therefore, even if the upper machine room 21 is provided behind the ceiling, it is possible to efficiently prevent heat from entering from the upper machine room 21 into the refrigerating room 6 that is the upper storage room.

  And the vacuum heat insulating material installed between the machine room side edge part 53a of the vacuum heat insulating material 53 installed in the substantially planar part of the said expanded polystyrene board 40, the machine room wall 35 of the upper machine room 21, and the inner box 3 is provided. The upper end portion 54a of the 54 is configured to overlap the horizontal projection plane, so that outside air heat and heat from the upper machine chamber 21 enter between the ends of the vacuum heat insulating materials 53 and 54. This can be reliably prevented, and a refrigerator with high heat insulation can be obtained.

  Further, as shown in FIGS. 18 and 19, the refrigerator of the present embodiment is provided with a lower machine chamber 22 at the lower portion of the refrigerator main body 1 and an evaporating dish 30. The evaporating dish 30 uses the defrosting means 19. The defrosted water that has been defrosted is received and evaporated, but the intake port 44 and the exhaust port 45 provided on both sides of the lower machine chamber 22 are provided on the rear surface of the refrigerator body 1 as shown in FIGS. A recess 48 connected to the air inlet 44 and the air outlet 45 is formed in the side plate of the refrigerator main body through the recess 46.

  Thereby, even if the back surface part of the refrigerator main body 1 is installed in close proximity to the wall surface, the intake port 44 and the exhaust port 45 can perform intake and exhaust through the recess 48 provided in the side plate portion of the refrigerator main body 1. . Accordingly, by driving the evaporation fan 31 provided in the lower machine chamber 22, it is possible to satisfactorily suck and exhaust air from the intake port 44 and the exhaust port 45, and to remove the evaporating dish 30 installed in the lower machine chamber 22. The frost water can be efficiently evaporated.

  Further, in this refrigerator, an intake / exhaust auxiliary intake port 56 and an auxiliary exhaust port 57 that communicate with the front of the refrigerator main body 1 are provided on the bottom surface of the lower machine chamber 22, so Outside air can be sucked and exhausted not only from the opening 45 but also from the front of the refrigerator body 1, and efficient evaporation can be realized. In particular, since the outside air sucked from the front is air that is not affected by heat such as a heat radiating pipe embedded in the side plate 47 of the refrigerator body 1, more efficient evaporation can be realized.

  And since the wind direction board 58 which directs the wind from the evaporation fan 31 to the water surface in the evaporation dish 30 is provided in the downstream of the said evaporation fan 31, the wind from the evaporation fan 31 can be efficiently applied to the water surface. The evaporation effect can be further enhanced.

  Further, since the evaporating fan 31 is installed obliquely with respect to the depth direction of the evaporating dish 30, the evaporating dish 30 can have a depth dimension smaller than the actual width of the evaporating fan 31. Therefore, the depth dimension of the lower machine room 22 can be reduced by that amount, in other words, the volume in the refrigerator main body 1 can be increased, and the storage amount of food and the like can be increased.

  Furthermore, since the lower end of the evaporating fan 31 is installed at substantially the same height as the upper end of the evaporating dish 30, the lower machine chamber 22 has a small size in the height direction including the evaporating dish 30 and the evaporating fan 31. Accordingly, the height of the lower machine room 22 can be reduced by that amount, the volume in the refrigerator body 1 can be further increased, and the storage amount of food and the like can be increased.

  Further, as shown in FIG. 14, the refrigerator of the present embodiment is provided with grips 32 for carrying the refrigerator body 1 on both sides of the upper machine room 21 provided behind the ceiling of the refrigerator body 1. The handle 32 is configured to protrude upward from the ceiling surface of the refrigerator main body 1.

  Thereby, the handle 32 can be provided without projecting backward from the back surface of the refrigerator main body 1, and although the height of the refrigerator main body 1 is increased, the space in the depth direction, that is, the installation space can be as it is, It can be installed without inconvenience to the user.

  In addition, since the handle 32 protrudes upward, a gap for inserting a hand can be provided between the refrigerator 32 and the ceiling surface of the refrigerator body, so that the handle can be easily held.

  Furthermore, even if the handle 32 is provided so as to protrude upward from the ceiling surface of the refrigerator main body 1 as described above, the handle 32 is located behind the ceiling portion of the refrigerator main body 1 together with the upper machine room 21, and thus the refrigerator main body 1. It can be seen from the front of the camera, and the appearance can be improved as it is.

  That is, the upper machine room 21 is provided behind the ceiling of the refrigerator body 1 to increase the volume of the lower storage room, and the wall thickness is reduced by eliminating the chamfers on both sides of the refrigerator body back to increase the storage room volume. While enjoying the effect, it is possible to maintain the current state of the main body installation space and the appearance design and ensure the ease of holding the handle during transportation.

  In the present embodiment, since the upper end of the handle 32 is substantially the same as the upper end of the upper machine chamber 21, the handle 32 is provided so as to protrude upward from the ceiling surface of the refrigerator body, and the height is increased. By utilizing this, the entire upper machine room 21 can be provided above the conventional level, and the volume of the refrigerating room 6 that is the upper storage room can be increased correspondingly to improve the usability.

  Further, since the upper end of the handle 32 is substantially the same height as the upper end of the control unit 29 provided on the ceiling portion of the refrigerator body 1, the handle 32 is moved from the ceiling surface of the refrigerator body as in the case of the upper machine room 21. The control unit 29 provided on the ceiling surface of the refrigerator main body by utilizing the fact that it is provided so as to protrude upward and the height is increased can also be provided higher than before, and the wall from the control unit 29 to the refrigerator compartment 6 correspondingly. The thermal effect from the control unit 29 can be reduced by increasing the thickness.

On the other hand, since the handle 32 includes the cover portion 59 that covers the upper machine chamber 21, the air in the upper machine chamber 21 can be ventilated through the vent 62 provided in the cover portion 59. 2
The compressor 23 and the like installed in 1 can be cooled by the fan 41 to reduce the heat effect on the refrigerator compartment 6.

  In addition, since the vent 62 is located separately on both sides of the upper machine room 21, the air can enter and exit from the upper machine room 21 smoothly, and the compressor cooling fan 41 is used. Efficient cooling is possible.

  In addition, since the cover portion 59 of the handle 32 is provided with a louver body 63 at the vent 62, the direction of the louver of the louver body 63 is changed to take in fresh air from the front and exhaust it forward. It is possible to effectively use the space at the top of the refrigerator to prevent a short-circuit between the suction portion and the discharge portion of the vent 62 and to efficiently discharge heat.

  In the present embodiment, the direction of the louver body 63 of the suction portion and the discharge portion of the vent 62 is described as being forward, but the direction of the louver body 63 of the suction portion and the discharge portion is different, for example, , One may be the front and the other the rear. In this case, more efficient exhaust heat can be performed in an environment where there is a space behind the refrigerator.

  In the refrigerator of the present embodiment, as shown in FIG. 22, rollers 33 for moving the refrigerator body 1 are provided on both sides of the lower machine chamber 22 of the refrigerator body 1. Since the connecting beam 65 for connecting the one side plate 47 and the reinforcing beam 66 attached to the lower end of the side plate 47 are connected to each other, the back plate 34 of the refrigerator body 1 is a flat plate having no chamfered portion. However, it can be positioned within the projected area of the refrigerator body 1. Therefore, the main body installation space of the refrigerator main body 1 can be made as it is.

  In addition, the connecting beam 65 and the reinforcing beam 66 are coupled to each other where the roller 33 is provided, and the strength is high. The reinforcing beam 66 serving as a strength member is applied to the roller 33 in the vicinity of the roller 33. Since the weight of the main body is supported, the moving performance can be maintained without being deformed by receiving the weight of the main body.

  In particular, with respect to strength, it is preferable to increase the width of the reinforcing beam 66 serving as a reinforcing member and provide the opening 33 in the reinforcing beam 66 to support the roller 33. In this case, the width of the reinforcing beam 66 extends over the entire length. The material cost increases and the cost increases. It is also conceivable to increase the width of the reinforcing beam 66 only at the supporting portion of the roller 33. In this case, the inner edge side end with the increased width becomes a free end, and the weight of the main body applied to the inner edge side end is reduced by one piece. Because it comes to support in the form of holding, there is a risk of deformation.

  However, in this embodiment, the strength of the roller support portion is improved by connecting the connecting beam 65 to the reinforcing beam 66, and the cantilever is disposed by placing the roller 33 close to the inner edge side of the reinforcing beam 66. Since the number of supporting elements in such a form is reduced, sufficient strength can be ensured and good movement performance can be maintained.

  That is, the roller installation strength can be kept as it is by arranging the roller 33 within the projection area of the main body while securing the roller support strength to prevent the main body from being deformed and maintaining good movement performance.

  Further, since the distance Y between the reference line X of the inner edge of the reinforcing beam 66 and the side surface of the roller 33 is smaller than ½ of the width dimension L of the roller 33, it is hung on the reinforcing beam 66 via the roller 33. The cantilever supporting weight of the main body weight can be reduced. Therefore, deformation of the roller support portion can be more reliably prevented over a long period.

Further, the roller support member 68 is attached to the lower surface side of the connecting beam 65, and can be attached without being obstructed by the refrigerator main body 1 located above the connecting beam 65 and the reinforcing beam 66, thereby improving workability. .

  In addition, the wall of the refrigerator main body 1 filled with the foam heat insulating material 4 is positioned within the upper projected area of the roller support member 68. In addition to the connection of the connecting beam 65 and the reinforcing beam 66, the foam main body 1 is expanded and insulated. Strengthening effect by the wall body filled with the material 4 is added. Therefore, the strength of the roller support portion is remarkably improved, and deformation of the roller support portion can be reliably prevented over a long period of time. And the depth dimension of the vegetable compartment 10 which is the lower store room in the refrigerator main body 1 can also be enlarged, and the enlargement of the vegetable compartment 10 can be implement | achieved.

  As mentioned above, although the refrigerator which concerns on this invention has been variously demonstrated by the said embodiment, this invention is not limited to this, It can change variously within the range which achieves the objective of this invention. Needless to say. In other words, the embodiment disclosed this time should be considered as illustrative in all points and not restrictive. That is, the scope of the present invention is shown not by the above description but by the scope of claims, and is intended to include all modifications within the meaning and scope equivalent to the scope of claims.

  As described above, the present invention reinforces the heat insulation of the back of the refrigerator body by increasing the vacuum heat insulating material area of the back plate part without hindering the increase in the foaming heat insulating material injection capacity and the lower storage chamber volume, And it can be set as the refrigerator with a thin wall thickness and a large internal volume. Therefore, it can be widely applied to other refrigerator-freezing applied products such as a home refrigerator, a commercial refrigerator, and a vending machine.

DESCRIPTION OF SYMBOLS 1 Refrigerator main body 2 Outer box 3 Inner box 3a Machine room formation step part 3b Back end corner part 4 Foam heat insulating material 6 Refrigeration room 7 Switching room 8 Ice making room 9 Freezing room 10 Vegetable room 11, 12, 13, 14, 15 Door 16 Cooling chamber 17 Cooler 18 Cooling air circulation fan 19 Defrosting means 20 Duct 21 Upper machine chamber (concave portion)
22 Lower machine room 23 Compressor 24 Condenser 25 Radiation pipe 25a Condensation prevention heat radiation pipe 25b Bypass heat radiation pipe 26 Capillary tube 26a, 26b Capillary tube 27 Three-way valve 28a, 28b Strainer 29 Control unit 30 Evaporating dish 31 Evaporating fan 32 Handle 33 Roller 34 Back plate 34a Protruding piece 34b Lack 35 Machine room wall 36 Injection hole 36a Lower injection hole 37 Control box 38 Control block 39 Cover plate 40 Styrofoam plate (molded heat insulating member)
41 Fan 42 Fan mounting unit 43 Lower machine room cover 44 Inlet port 45 Exhaust port 46 Recessed portion 47 Side plate 48 Recessed portion 49 Air passage 51, 52, 53, 54 Vacuum heat insulating material 53a Machine chamber side end portion 54a Upper end portion 56 Auxiliary intake air Port 57 Auxiliary exhaust port 58 Airflow direction plate 59 Cover part 60 Handle part 61 Metal machine room cover 62 Ventilation hole 63 Louver body 64 Preliminary ventilation hole 65 Connecting beam 66 Reinforcement beam 67 Opening 68 Roller support member 69 Lid member 70 Foam insulation injection pipe

Claims (4)

A refrigerator main body having a plurality of storage chambers, and a recess provided at the rear of the ceiling of the refrigerator main body, the back plate of the refrigerator main body being a flat plate shape without a chamfered portion, The refrigerator which provided the injection hole of the foam heat insulating material above the said vacuum heat insulating material of the faceplate. A refrigerator main body having a plurality of storage chambers, a back plate of the refrigerator main body, and a vacuum heat insulating material arranged on the back plate, wherein the back heat insulating plate is arranged as a flat plate without a chamfered portion. In addition, the back plate is provided with a protruding portion at a part of its upper end, and the protruding portion is provided with an injection hole for foam heat insulating material. The refrigerator according to claim 1 or 2, wherein a lid member is provided on the inner surface side of the injection hole of the back plate, and the lid member is positioned between the bottom surface of the recess and the step for forming the recess of the inner box. The refrigerator body according to any one of claims 1 to 3, wherein the refrigerator main body is provided with an injection hole at a lower portion of the back plate portion, and a lower end portion of the vacuum heat insulating material lacks a portion facing the injection hole.

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