JP2005331221A - Refrigerator and refrigerator assembling method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a refrigerator structure allowing formation of a door surface in a smooth flat surface state or curved surface state though providing an observation window in a door, and allowing improvement of heat insulation performance of the observation window. <P>SOLUTION: A heat insulation casing 10 of this refrigerator 1 is provided with doors 21, 22, 23, 24. The surface of each the door is covered with a transparent protection panel 100. A part of the door 21 faces an ice making chamber 70 whose internal temperature is in an ice making temperature zone, and a position thereof is provided with the observation window 80 for confirming an internal situation of the ice making chamber 70. A window frame 81 bordering the circumference of the observation window 80 has a fixed window frame 81a formed of a foamed resin, and see-through heat insulation glass 90 of a multi-layered structure is fitted in a step part 82 formed in the fixed window frame 81a. An air heat insulation layer 94 is formed between the see-through heat insulation glass 90 and the protection panel 100. Coating is applied to the rear face of the protection panel 100 except a portion facing the observation window 80. The protection panel 100 has flame retardancy. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a household or commercial refrigerator and an assembling method thereof.

In a refrigerator, a viewing window for checking the state inside the refrigerator may be provided on the door. Examples of such refrigerators can be found in US Pat.
JP-A-4-68286 (page 3-4, FIGS. 3, 5) JP 2004-69114 A (page 3-4, FIG. 1-3)

  The viewing window is fitted with heat insulating glass that has a multilayer structure or a heat reflecting film to ensure heat insulating performance. By the way, when a peep window is formed, it cannot be finished simply by making a hole in the door. This is because if the cross section of the outer plate of the door punched out is exposed, the aesthetics will be lost, and if the cut end of the plate is exposed, there is a risk that the fingers will be caught and cut. Therefore, a synthetic resin window frame is fitted into the punched hole to cover the dangerous cut, and the insulation glass is smoothly fitted.

  When a viewing window is formed on the refrigerator door in this way, it is almost inevitable that the periphery is surrounded by a window frame, but the heat insulation performance is deteriorated due to the heat conduction of the window frame, and the window frame and the door surface. As a result, a smooth door surface cannot be obtained. If there is a step on the door surface, the touch becomes worse, and there is a problem that the appearance is deteriorated due to the accumulation of dirt at the step.

  The present invention has been made in view of the above points, and can improve the heat insulating performance of the viewing window, and can also make the door surface a smooth flat surface or a curved surface even though the viewing window is provided on the door. The purpose is to provide. In addition, it aims at provision of the refrigerator structure which can give fire prevention performance to a door. Furthermore, it aims at provision of the refrigerator structure and refrigerator assembly method which can be assembled easily.

  In order to solve the above-described problems, the refrigerator is configured as follows in the present invention.

  (1) A viewing window is provided in a part of the door whose surface is covered with a transparent protective panel, and a see-through heat insulating glass is engaged with the looking window, and an air heat insulating layer is provided between the protective panel and the see-through heat insulating glass. It is characterized by forming.

  According to this configuration, since the surface of the door on which the viewing window is provided is covered with the transparent protective panel, the touch and aesthetics of the door can be improved. Moreover, since an air heat insulation layer is formed between the see-through heat-insulating glass fitted into the viewing window and the protective panel, the heat insulating performance of the viewing window is further improved.

  (2) Moreover, the present invention is characterized in that, in the refrigerator having the above-described configuration, the back surface of the protective panel is coated except for a portion facing the viewing window.

  According to this configuration, the aesthetics are further improved. Also, unlike the case of baking and painting on a steel door door, the coating is not damaged. Therefore, the paint is not peeled off, and the aesthetics are not impaired by rusting from the scratched part.

  (3) Further, in the refrigerator having the above-described configuration, the viewing window is provided for an internal compartment whose internal temperature can be switched, and the see-through heat-insulating glass has a portion that can be visually recognized from the outside through the protective panel. It is characterized by applying a temperature indicating paint to a part.

  According to this configuration, the temperature state in the switching state can be easily known by observing the color of the temperature indicating paint from the outside.

  (4) Further, in the refrigerator configured as described above, a window frame made of foamed resin is disposed around the viewing window, and the transparent heat insulating glass is engaged with a step portion formed on the window frame. It is said.

  According to this configuration, the adhesion between the window frame and the see-through heat insulating glass is good, and there is no need to provide a separate cool air seal. In addition, since the heat insulating property of the window frame itself is large, external heat hardly enters the inside of the refrigerator from the periphery of the see-through heat insulating glass, and the heat load of the refrigerator can be reduced. In addition, there is little condensation on the surface of the see-through heat insulating glass, and good seeability can be secured. Furthermore, by engaging the transparent heat insulating glass with the elastic foamed resin, the transparent heat insulating glass can be held without rattling, and chatter noise can be prevented from being generated when the door is opened and closed, and resistance to vibration can be increased. .

  Further, when the heat insulating body is foamed inside the door, since the see-through heat insulating glass does not exist during foaming, the see-through heat insulating glass is not damaged due to the pressure of the resin being foamed. In addition, it is possible to maintain good serviceability without seeing through the transparent heat insulating glass in the foamed resin and making it difficult to replace it.

  (5) Moreover, this invention is the refrigerator of the said structure, The said compartment is an ice-making room, It is characterized by the above-mentioned.

  According to this configuration, the ice making chamber can be provided in the refrigerator compartment because the temperature is higher than the freezing temperature zone. If a viewing window is provided in the ice making room, the viewing window is provided in the refrigerating room, so that the number of times of opening and closing the door of the freezing room can be reduced. And since the accumulation of ice can be checked at a glance from the outside, it is possible to reduce unnecessary opening and closing and promote energy saving.

  (6) Moreover, this invention is characterized by the said structure and the sash which attaches this protection panel to a door being provided with a flame retardance in the refrigerator of the said structure.

  According to this configuration, if the protective panel on the door surface is flame retardant, when the fire breaks out from the housing side, it is possible to prevent the fire from burning out from the door to the outside. In addition, when a fire breaks out outside the refrigerator, it is possible to prevent the fire from burning to the housing through the door and burning the housing. Thus, the safety of the refrigerator can be enhanced in terms of fire prevention or fire resistance. If the sash that attaches the protective panel to the door is also flame retardant, the fireproof performance of the refrigerator can be further enhanced.

  (7) Moreover, this invention forms the groove | channel which mutually opposes in the upper sash and lower sash which cover the upper and lower sides of the said door in the refrigerator of the said structure, and inserts the said protection panel in these grooves, and attaches a protection panel. It is characterized by.

  According to this configuration, the protective panel can be easily and smoothly attached.

  (8) Moreover, this invention is characterized by the said structure WHEREIN: The processus | protrusion which contacts the back surface of the said protection panel is formed in the surface of the said door at predetermined intervals.

  According to this configuration, the protective panel can be held without causing the contact portion to float.

  (9) Moreover, the present invention is characterized in that in the refrigerator configured as described above, the door has a structure for holding the protective panel in a curved shape.

  According to this configuration, the protective panel can be brought into close contact with the door without the aid of screws or adhesives.

(10) In the present invention, the following steps are sequentially performed in assembling the refrigerator:
(A) A step of attaching a door having a viewing window in a part thereof and a heat insulation treatment to the refrigerator main body (b) a step of engaging a see-through heat insulating glass with the viewing window (c) on the surface of the door And a step of attaching a protective panel in which at least a portion facing the viewing window is transparent.

  According to this configuration, the see-through heat insulating glass and the protective panel can be easily attached. Further, when the door is attached to the refrigerator main body, the weight of the transparent heat insulating glass and the protective panel is reduced, so that the burden on the operator can be reduced.

  According to the present invention, since the surface of the door on which the viewing window is provided is covered with the transparent protective panel, even if the periphery of the viewing window is bordered by the window frame, the window frame is not caught by fingers, and the window frame and the door surface Dirt does not accumulate on the step. Therefore, the touch and aesthetics of the door can be improved. Moreover, since an air heat insulation layer is formed between the see-through heat-insulating glass fitted into the viewing window and the protective panel, the heat insulating performance of the viewing window is further improved.

  Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. 1 is a front view of the refrigerator, FIG. 2 is a front view of the refrigerator with all doors open, FIG. 3 is a partial cross-sectional view showing the structure of a handle portion of the door, and FIG. 4 is a line AA in FIG. FIG. 5 is a partial horizontal cross-sectional view of the refrigerator door having a cross-sectional location along the line BB in FIG. 4.

  The refrigerator 1 divides the inside of the heat insulating housing 10 constituting the refrigerator main body into four parts vertically and horizontally, the upper left section is the first section 11, the upper right section is the second section 12, the lower left section is the third section 13, The lower right section is defined as a fourth section 14 (see FIG. 2). A horizontally long belt-like portion is left at a location below the first compartment 11 and the second compartment 12 and above the third compartment 13 and the fourth compartment 14, and this portion is used as an operation panel unit 15.

  A door 21 is provided at the front opening of the first compartment 11, a door 22 is provided at the front opening of the second compartment 12, a door 23 is provided at the front opening of the third compartment 13, and A door 24 is provided at the front opening. The doors 21 and 22 and the doors 23 and 24 each have a double door opening. That is, the doors 21 and 23 have a hinge part on the left side, and the doors 22 and 24 have a hinge part on the right side.

  As shown in FIG. 3, the doors 21 and 22 have a recessed handle portion 25 on the lower edge, and the doors 23 and 24 have a recessed handle portion 26 on the upper edge. The door can be opened by placing a hand on these handle portions.

  The first section 11 is used as a refrigerator compartment 30. The refrigerator compartment 30 is divided into a plurality of stages by a plurality of shelves 31. A plurality of racks 32 for storing bottles and beverage paper packs are attached to the inner surface of the door 21.

  The second compartment 12 is also used as the refrigerator compartment 40. The refrigerator compartment 40 is partitioned into a plurality of stages by a plurality of shelves 41, and a drawer-type refrigerator container 42 is placed at the lowest stage. A plurality of racks 43 for storing bottles, paper packs for beverages, and the like are attached to the inner surface of the door 21.

  The third section 13 is used as a vegetable room 50. A total of four vegetable containers 51a, 51b, 51c, 51d are stored in the vegetable room 50 so as to overlap each other. The vegetable containers 51a, 51b, 51c, 51d are respectively supported on the inner surface of the vegetable chamber 50 by the side edges, and can be pulled out by sliding forward. A vegetable stand 52 for standing and storing long vegetables is attached to the inner surface of the door 23.

  The fourth compartment 14 is used as a freezer compartment 60. A total of four freezing containers 61a, 61b, 61c, 61d are stored in the freezer compartment 60 so as to overlap each other. The freezing containers 61a, 61b, 61c, and 61d are respectively supported on the inner surface of the freezing chamber 60 by both side edges, and can be pulled out by sliding forward.

  An ice making chamber 70 is formed as a heat-insulating section in the lowermost part of the refrigerator compartment 30. A door 71 is provided at the front opening of the ice making chamber 70 in order to prevent air from entering and leaving the refrigerator compartment 30. The door 71 is made of a transparent synthetic resin, so that the inside of the ice making chamber 70 can be seen without opening. The internal temperature of the ice making chamber 70 is an ice making temperature zone (about −10 ° C.) higher than the freezing temperature zone.

  A viewing window 80 is formed at a location corresponding to the ice making chamber 70 in the door 21 so that the inside of the ice making chamber 70 can be seen without opening the door 21. 4 and 5 show the cross-sectional structure of the observation window 80. FIG.

  A window frame 81 that borders the periphery of the viewing window 80 includes a fixed window frame 81a and a holding window frame 81b. The fixed window frame 81a is formed of a foamed resin. It is appropriate to use foamed polystyrene as the foamed resin. Step portions 82 and 83 are formed on the inner surface of the fixed window frame 81a in two stages from the inner side to the outer side of the heat insulating housing 10. When compared with the projected area from the front, the step 83 located closer to the front is larger in area than the step 82 located closer to the back. The see-through heat insulating glass 90 is engaged with the stepped portion 82.

  The see-through heat insulating glass 90 has three layers of glass. A space between the first layer glass 90 a and the second layer glass 90 b becomes the vacuum heat insulating layer 91. An inert gas such as argon gas is sealed in the space between the second glass layer 90b and the third glass layer 90c to form an inert gas heat insulating layer 92. A spacer 93 is disposed around the inert gas heat insulating layer 92 to separate the second glass layer 90b and the third glass layer 90c. Thus, the transparent heat insulation glass 90 has acquired the high heat insulation performance by the structure which provides a two-layer heat insulation layer between three glass layers.

  After the see-through heat-insulating glass 90 configured as described above is seated on the step portion 82, the step portion 83 is provided with a synthetic resin pressing window frame 81 b having a T-shaped cross section, and its own elasticity and the elasticity of the fixed window frame 81 a. The elastic insulating glass 90 is used for elastic engagement to prevent the see-through heat insulating glass 90 from falling off.

  The inside of the door 21 is filled with a heat insulating body 27 made of foamed resin except for the portion of the observation window 80. A foamed polyurethane is used as the foamed resin. It is not only the door 21 but also the doors 22, 23 and 24 that are filled with the heat insulator 27.

  The heat insulator 27 is filled by foaming resin in a cavity inside the door. However, in the door 21, the fixing window frame 81a is attached, and before the see-through heat insulating glass 90 is fitted. This is because when the transparent heat insulating glass 90 and the holding window frame 81b are fitted into the fixed window frame 81a and foaming is performed, the transparent heat insulating glass 90 may be damaged due to the pressure of the resin being foamed. Because. In addition, if the foamed resin leaks out from the gap and embraces the see-through heat insulating glass 90, the replacement of the see-through heat insulating glass 90 becomes extremely difficult. Therefore, after the foaming converges and the heat insulating body 27 is solidified, the see-through heat insulating glass 90 is engaged.

  Since the fixed window frame 81a is made of foamed resin, it has good adhesion to the see-through heat insulating glass 90, and there is no need to provide a separate cool air seal. Moreover, since the fixed window frame 81a itself has a large heat insulating property, external heat hardly enters the inside of the refrigerator from the periphery of the see-through heat insulating glass 90, and the heat load of the refrigerator 1 can be reduced. Further, there is little condensation on the surface of the see-through heat insulating glass 90, and good see-through property can be secured.

  Further, by engaging the see-through heat insulating glass 90 with the elastic fixed window frame 81a, the see-through heat insulating glass 90 is held without rattling, and chatter noise is not generated when the door 21 is opened and closed. It also has high resistance to vibrations in the sense that rattling is unlikely to increase with repeated vibrations.

  After the transparent heat insulating glass 90 and the pressing window frame 81b are engaged with the fixed window frame 81a as described above, the transparent protective panel 100 is inserted into the front surface of the pressing window frame 81b. The protective panel 100 is made of transparent resin such as acrylic or polycarbonate, or tempered glass. The four sides of the door 21 are surrounded by a sash made of synthetic resin, but the sash is not attached to only one side, and the protective panel 100 is inserted from here. If the remaining sash is attached after pushing the protective panel 100 to a predetermined position, the attachment of the protective panel 100 is completed. Note that the sash 28 shown in FIG. 5 has a cross-sectional shape that conforms to one specific side of the door 21, and the sashes on the other three sides are not all the same cross-sectional shape as the sash 28.

  By covering the surface of the door 21 with the protective panel 100, fingers are not caught on the window frame 81 even if the portion of the viewing window 80 is stroked by hand. Further, no dirt is accumulated on the step between the window frame 81 and the surface of the door 21. For this reason, both the touch and aesthetics of the door 21 can be improved.

  When the protective panel 100 is stacked in front of the see-through heat insulating glass 90, a space is generated between the see-through heat insulating glass 90 and the protective panel 100 due to the thickness of the pressing window frame 81b. The air in this space forms the air heat insulating layer 94, and the heat insulating performance of the viewing window 80 is further improved.

  Similarly, the doors 22, 23, and 24 are covered with the protective panel 100. Each of the four protective panels 100 is painted on the back surface. The painting is performed by first spraying a paint for obtaining a color tone such as a pearl tone and then backing it with a white paint. Unlike baked paint on the surface of a steel door, the paint is not damaged. For this reason, the paint is not peeled off, and the aesthetics are not spoiled by the progress of rust from the scratched part.

  In the protective panel 100 of the door 21, the portion facing the viewing window 80 is excluded from the object to be painted and remains transparent. However, since the portion of the window frame 81 in the viewing window 80 is any hindrance to fluoroscopy, the portion facing the window frame 81 may be included in the painting target. By doing so, the presence of the window frame 81 is also hidden, and the aesthetic appearance is further improved.

  Next, a second embodiment of the present invention will be described based on FIG. FIG. 6 is a partial horizontal sectional view of the refrigerator door similar to FIG.

  In the second embodiment, the temperature indicating paint is applied to a part of the transparent heat insulating glass 90 that is visible from the outside through the protective panel 100. In the illustrated example, the temperature indicating paint 95 is applied in a frame shape on the surface of the third layer glass 90c so as to protrude inward from the press window frame 81b. If the color of the temperature indicating paint 95 is set so as to change between when the internal temperature is at a suitable level and when it is higher than that, the door is appropriately set according to the color of the temperature indicating paint 95 viewed from the outside of the door 21. The number of times of opening and closing 21 can be adjusted to help manage the internal temperature.

  Although both the first and second embodiments have a structure in which a viewing window is provided for the internal compartment (the ice making chamber 70) whose internal temperature is lower than the refrigeration temperature zone, the viewing window is provided for the internal compartment of the refrigeration temperature zone. It is also possible to provide.

  In addition, there is a refrigerator that has an internal compartment that can be switched between a freezing temperature zone and a refrigerated temperature zone, and that can be used as a freezer room that tends to lack capacity in summer and a refrigerator room in winter. A viewing window can also be provided for such a temperature-switchable compartment. In this case, there is an advantage that the inside compartment can be checked without opening the door at the time of use in a freezing temperature range where it is desired to avoid opening the door as much as possible.

  In this way, if the temperature indicating paint is applied to the see-through heat-insulating glass of the viewing window provided for the internal compartment where the internal temperature can be switched, the temperature state in the switching state can be simplified by observing the color of the temperature indicating paint from the outside. Can know.

  In both the first embodiment and the second embodiment, it is desirable to use a protective panel 100 having flame retardancy. If the material of the protective panel 100 is tempered glass, it naturally has flame retardancy. However, even if it is acrylic or polycarbonate, a material given a flame retardance grade is selected.

  By providing the protective panel 100 with flame retardancy in this way, when a fire breaks out from the side of the heat insulating casing 10, the fire is prevented from burning out from the doors 21, 22, 23, and 24, and burning outside. can do. Moreover, when a fire breaks out outside the refrigerator 1, it can prevent that the fire burns to the heat insulation housing | casing 10 through the doors 21, 22, 23, and 24, and the heat insulation housing | casing 10 burns out.

  It is desirable to use a flame retardant material for all the sashes for attaching the protective panel 100 to the doors 21, 22, 23, and 24. Thereby, the fireproof performance of the refrigerator 1 can be improved further.

  Next, a third embodiment of the present invention will be described with reference to FIGS. The third embodiment is obtained by improving the structure of the door 21 of the first and second embodiments. 7 is a front view of the door before attaching the see-through heat insulating glass and the protective panel, FIG. 8 is a vertical sectional view of the door in the state of FIG. 7, FIG. 9 is a front view of the door with the see-through heat insulating glass attached, FIG. Is a vertical sectional view of the door in the state of FIG. 9, FIG. 11 is a front view of the door in the middle of attaching the protective panel, FIG. 12 is a vertical sectional view of the door in the state of FIG. FIG. 14 is a partially enlarged vertical sectional view of a steel plate constituting the door surface.

  A protrusion 101 is formed on the surface of the door 21. The protrusion 101 has a shape of a ridge extending horizontally over almost the entire width of the door 21, and a plurality of protrusions 101 are formed at predetermined intervals in the vertical direction. For example, as shown in FIG. 14, the protrusion 101 can be obtained by pressing a protrusion on a steel plate constituting the surface of the door 21. Instead of pressing the steel plate, the protrusion 101 may be formed by attaching a tape-like or emblem-like protrusion material.

  The hook-shaped projections 102 are also formed on the upper and lower edges of the holding window frame 81b. The protrusion amount of the protrusion 102 from the surface of the door 21 is the same as that of the protrusion 101.

  The sash covering the four sides of the door 21 includes a left sash 28L attached to the left side as viewed from the front, a right sash 28R attached to the right side (see FIG. 13), an upper sash 28T attached to the upper side, and a lower sash attached to the lower side. It is composed of four members 28B.

  The upper sash 28T and the lower sash 28B protrude from the surface of the door 21 to the front side. Grooves 103 are formed in the protruding portion on the surface facing downward in the upper sash 28T and the surface facing upward in the lower sash 28B, that is, the surfaces facing each other.

  The door 21 is attached and assembled as follows. First, polyurethane is foamed inside the door 21 in a state where neither the see-through heat insulating glass 90 nor the protective panel 100 is attached. That is, the door 21 is thermally insulated. The door 21 in this state is attached to the heat insulating housing 10. Then, the left sash 28L, the upper sash 28T, and the lower sash 28B are attached to the door 21. You may attach the door 21 to the heat insulation housing | casing 10 after attaching these sashes. 7 and 8 show a door 21 that has completed the steps up to here. Note that FIG. 8 illustrates the heat insulating casing 10 behind the door 21 (the same applies to FIGS. 10 and 12).

  9 and 10 show the next stage. That is, the see-through heat insulating glass 90 and the press window frame 81b are fitted into the door 21 attached to the heat insulating housing 10 from the front side.

  11 and 12 further show the next stage. That is, here, the protective panel 100 is inserted into the grooves 103 of the upper and lower sashes 28T and 28B from the side surface direction of the door 21. In the protective panel 100, a transparent portion 100 a is formed at a location facing the viewing window 80. Since the right sash 28R is not yet attached, the protection panel 100 is inserted from the right side. The back surface of the protective panel 100 is brought into contact with the protrusions 101 and 102, and the protective panel 100 moves toward the left sash 28L while sliding on the protrusions 101 and 102.

  When the protective panel 100 is fully inserted, the right sash 28R is attached so that the protective panel 100 does not come out. With this, the assembly of the door 21 is completed. FIG. 13 shows the door 21 in the assembled state.

  Thus, the grooves 103 facing each other are formed in the upper sash 28T and the lower sash 28B that cover the upper and lower sides of the door 21, and the protection panel 100 is inserted into these grooves 103 from the side surface direction of the door 21. The panel 100 can be easily and smoothly attached. Further, since the protrusions 101 and 102 that contact the back surface of the protection panel 100 are formed on the surface of the door 21 at a predetermined interval, the protection panel 100 can be held without causing the contact portion to float.

  Moreover, since the door 21 in a state where the heat insulation treatment is finished is first attached to the refrigerator main body, and then the see-through heat insulating glass 90 and the protection panel 100 are attached, the attaching work of the see-through heat insulation glass 90 and the protection panel 100 can be easily performed. it can. Further, when the door 21 is attached to the refrigerator main body, the weight of the transparent heat insulating glass 90 and the protective panel 100 is reduced, so that the burden on the operator can be reduced.

  The point where the protective panel 100 is inserted into the grooves of the upper sash and the lower sash that cover the upper and lower sides of the door, the point that protrusions that contact the back surface of the protective panel 100 are formed at predetermined intervals on the door surface, and the door that has been subjected to the heat insulation treatment The point of attaching the protective panel 100 after being attached to the heat insulating housing 10 can also be implemented in doors other than the door 21, that is, the doors 22, 23, and 24.

  Next, a fourth embodiment of the present invention will be described with reference to FIG. In the fourth embodiment, the structure of the door 21 of the third embodiment is improved. FIG. 15 is a vertical sectional view of the door.

  In the third embodiment, the protruding amounts of the protrusions 101 and 102 from the surface of the door 21 are constant. In the fourth embodiment, the protrusion amount is changed so that the protrusion amount is small near the upper side and the lower side, and the protrusion amount is large near the center in the vertical direction. As a result, the protection panel 100 is curved as seen in FIG. 15 and closely contacts the door 21 (specifically, the protrusions 101 and 102) without the aid of screws or adhesive.

  In this embodiment, the protective panel 100 is curved on a vertical plane, but a configuration in which the protective panel 100 is curved in a horizontal plane is also possible. It can be curved into a spherical shape.

  The curved structure of the protective panel 100 as described above can be implemented not only in the door 21 but also in the doors 22, 23, and 24.

    As mentioned above, although each embodiment of the present invention was described, the scope of the present invention is not limited to this, and various modifications can be made without departing from the spirit of the invention.

    The present invention can be used in general refrigerators for home use or business use.

The front view of the refrigerator which concerns on 1st Embodiment of this invention. Front view of refrigerator with all doors open Partial sectional view showing the structure of the handle part of the door Partial vertical sectional view of the refrigerator door having a cross-sectional location along line AA in FIG. The partial horizontal sectional view of the refrigerator door which makes the BB line of FIG. 4 a cross-sectional location Partial horizontal sectional view of the refrigerator door according to the second embodiment of the present invention. The front view of the door before attaching the see-through heat insulation glass and protection panel of the refrigerator which concerns on 3rd Embodiment of this invention. Vertical sectional view of the door in the state of FIG. Front view of the door with the see-through insulation glass attached Vertical sectional view of the door in the state of FIG. Front view of door during protection panel installation Vertical sectional view of the door in the state of FIG. Front view of the completed door Partially enlarged vertical cross-sectional view of the steel sheet constituting the door surface Vertical sectional view of a refrigerator door according to a fourth embodiment of the present invention

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Refrigerator 10 Heat insulation housing 21, 22, 23, 24 Door 28L Left sash 28R Right sash 28T Upper sash 28B Lower sash 30, 40 Refrigeration room 50 Vegetable room 60 Freezing room 70 Ice making room 80 Viewing window 81 Window frame 81a Fixed window frame 81b Holding window frame 82, 83 Step portion 90 Transparent heat insulating glass 91 Vacuum heat insulating layer 92 Inert gas heat insulating layer 94 Air heat insulating layer 95 Thermal paint 100 Protection panel 101, 102 Protrusion 103 Groove

Claims (10)

  A peeping window is provided in a part of the door whose surface is covered with a transparent protective panel, and a transparent heat insulating glass is fitted into the peeping window, and an air heat insulating layer is formed between the protective panel and the transparent heat insulating glass. Features a refrigerator.   2. The refrigerator according to claim 1, wherein the protective panel is coated on a back surface thereof except for a portion facing the viewing window.   The viewing window is provided for a compartment in which the internal temperature can be switched, and a temperature indicating paint is applied to a part of the transparent heat insulating glass that can be visually recognized from the outside through the protective panel. Item 3. The refrigerator according to Item 1 or 2.   The refrigerator according to any one of claims 1 to 3, wherein a window frame made of foamed resin is disposed around the viewing window, and the transparent heat insulating glass is engaged with a step portion formed on the window frame. .   The refrigerator according to any one of claims 3 to 4, wherein the internal compartment is an ice making room.   The refrigerator according to any one of claims 1 to 5, wherein the protective panel and / or the sash that attaches the protective panel to the door has flame retardancy.   The upper sash and the lower sash that cover the upper and lower sides of the door are formed with mutually opposed grooves, and the protective panel is inserted into these grooves to attach the protective panel. Refrigerator.   The refrigerator according to claim 7, wherein protrusions that contact the back surface of the protection panel are formed on the surface of the door at a predetermined interval.   The refrigerator according to claim 7 or 8, wherein the door includes a structure that holds the protective panel in a curved shape. A refrigerator assembly method characterized by sequentially performing the following steps:
(A) A step of attaching a door having a viewing window in a part thereof and a heat insulation treatment to the refrigerator main body (b) a step of engaging a see-through heat insulating glass with the viewing window (c) on the surface of the door And a step of attaching a protective panel in which at least a portion facing the viewing window is transparent.

Images