JP2006220358A - Refrigerator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a refrigerator having a drawer with little rattling and of high quality, convenient to use while requiring small operating force even if a load is added, and taking measures for operability deterioration of a rail caused by dew and frost generated when it is cooled. <P>SOLUTION: A rail member 30 is composed of a stationary rail 30a, a movable rail 30b, an intermediate travelling rail 30c provided between the stationary rail 30a and the movable rail 30b, and a plurality of bearings 30d forming a rotary support member to support engagement of the intermediate travelling rail 30c, the stationary rail 30a, and the movable rail 30b, and a temperature compensating heater 36 for preventing them from being bedewed and frosted is disposed in the vicinity of the rail member 30. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a refrigerator provided with a drawer device, and more particularly to a means for condensation and frost formation on a drawer rail.

  In recent years, as the size of refrigerators has increased, the amount of storage tends to increase, and in order to increase the amount of storage and improve usability, those equipped with a drawer device have become mainstream (for example, see Patent Document 1). ).

  Hereinafter, a refrigerator including the conventional drawer device will be described with reference to the drawings.

  FIG. 8 is a perspective view of a drawer door of a conventional refrigerator. FIG. 9 is a cross-sectional view of a main part of a conventional refrigerator drawer device. FIG. 10 is a cross-sectional view of a conventional refrigerator drawer device. A refrigerator drawer device 17 of the prior art includes an openable / closable door 1 on the front surface of the refrigerator body, a frame 2 having one end fixed to the left and right sides of the door, a connecting frame 16 having a rear end connected thereto, and a rear end of the frame 2. Mounted on the attached movable roller 3, the frame 2 fixed and attached to the inner box side wall 4, the fixed rail 5 slidably supporting the movable roller 3, the fixed roller 6, the frame 2, and the connecting frame 16. Consists of a case 15 in the cabinet Further, the frame side surface 9 is a flat surface, and the groove portion 12 of the fixed rail 5 is also a flat surface.

  Then, the movable roller 3 attached to the rear end of the frame 2 fixed in advance to the left and right sides of the door back surface of the door 1 is inserted into the groove 12 of the fixed rail 5 attached in advance to the refrigerator main body, and the bottom surface of the frame 2 and the fixed roller 6 is assembled so as to slide in contact therewith.

In the above configuration, when the door 1 is opened and closed, the frame 2 having one end fixed to the door 1, the connecting frame 16 connected to the frame 2, the internal case 15 and the movable roller 3 placed thereon are fixed rails. 5 and the fixed roller 6 are allowed to slide in the front-rear direction synchronized with the door 1.
Japanese Utility Model Publication No. 60-27913

  However, in the conventional refrigerator, since the frame 2 fixed in advance on the left and right sides of the door back side of the door 1 is used by being incorporated in the fixed rail 5 attached in advance to the refrigerator main body side, the mounting variation of the frame 2 or the fixed rail 5 and the assemblability are reduced. In consideration of the above, a certain amount of clearance is set between the rail and the roller in the assembled state. Due to this clearance, left and right rattling occurs when the door 1 is opened and closed, which impairs operability and does not improve the quality during operation.

  The present invention solves the above-mentioned conventional problems, has a high-quality with little backlash, has a user-friendly drawer with a small operating force even when a load is applied, and operates a rail due to dew or frost generated during cooling. It aims at providing the refrigerator which coped with sex deterioration.

  In order to solve the above-mentioned conventional problems, the refrigerator of the present invention fixes a rail member in which a fixed rail and a moving rail are previously incorporated to an inner box wall surface provided with rail position regulating means, and then a container is attached. It is supported by a rail member.

  As a result, the clearance between the fixed rail and the movable rail can be reduced, and a high-quality drawer with less play can be configured.

  Further, by supporting the space between the fixed rail and the moving rail with the rotation support member, even when a load is applied to the container, the moving rail can move smoothly, so that the operation force of the drawer can be reduced.

  However, in this case, the clearance between the fixed rail and the moving rail may be reduced and the operability may be impaired due to condensation or frost formation due to high-quality drawers. There is a possibility that the door will open and close abnormally due to freezing. Therefore, the reliability can be improved by controlling the temperature of the rail surface with the heating means provided in the rail position regulating means.

  The refrigerator of the present invention has small play, can open and close the drawer smoothly even when a load is applied to the container, and has high reliability and improved usability by dealing with condensation and frost formation. A good drawer storage can be constructed.

  The invention according to claim 1 is provided inside the heat insulation box, and a heat insulation box having a front opening made of an inner box, an outer box, and a foam heat insulating material filled between the inner box and the outer box. And a rail member that allows the container to move back and forth, the rail members are provided on the left and right, the rail member having a fixed rail and a moving rail, and the fixed rail and the moving rail rotate respectively. The rail member is fixed to the heat insulating box provided with rail position restriction means in a state in which the fixed rail and the moving rail are preliminarily incorporated, and then the container is supported on the rail member, and the rail position is By providing dew condensation / frosting countermeasures to the control unit, the reliability of operability due to dew condensation, frost formation, freezing, etc. of the rail members can be improved by controlling the rail surface temperature. Can.

  In the second aspect of the invention, the dew condensation / frosting countermeasure means of the first aspect of the invention uses a temperature compensation heater, which makes it possible to easily adjust the rail surface temperature with electric input. It becomes possible to improve energy saving and reliability by temperature control.

  According to a third aspect of the present invention, dew condensation, frost formation, and freezing are performed by detecting the door switch and defrosting and controlling the timing of energization of the dew condensation / frost formation means of the first or second aspect of the invention. Condensation / frosting countermeasures can be efficiently energized at times when mist is likely to occur.

  According to a fourth aspect of the present invention, the temperature control is further performed by increasing the energization of the dew condensation / frosting means according to the first aspect of the invention according to any one of the first to third aspects by ΔT seconds after the door is opened or closed or after the defrosting is completed. Reliability can be improved.

  The invention according to claim 5 saves energy by stopping or reducing energization of the dew condensation / frosting means of the invention according to any one of claims 1 to 4 during opening / closing of the door or during defrosting. Can be improved.

  The invention according to claim 6 is characterized in that the dew condensation / frosting means of the invention according to any one of claims 1 to 5 is energized in a case where the temperature in the storage chamber is 0 ° C. or less, thereby dew condensation, Condensation / frost formation countermeasures can be efficiently energized at times when frost formation and freezing are likely to occur.

  In the invention according to claim 7, by stopping energization of the dew condensation / frosting means of the invention according to any one of claims 1 to 6 when the storage chamber temperature is 0 ° C. or more, Energy saving can be achieved.

  The invention according to claim 8 is the cooling speed at startup by stopping energization of the dew condensation / frosting countermeasure means of the invention according to any one of claims 1 to 7 for T time after the refrigerator startup. You can plan up.

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

(Embodiment 1)
1 is a side sectional view of a refrigerator according to Embodiment 1 of the present invention, FIG. 2 is a sectional view taken along line AA of FIG. 1, FIG. 3 is an exploded view of a rail member of the refrigerator according to the embodiment, and FIG. It is sectional drawing of the rail member vicinity of the refrigerator of the embodiment.

  In FIG. 1 to FIG. 4, the heat insulating box 19 of the refrigerator 18 is filled with a foam heat insulating material 22 between the inner box 20 and the outer box 21, has a front opening 19 a, and is divided by a partition wall 23. A refrigerator room 24, a switching room 25, a vegetable room 26, and a freezer room 27 are formed from the top.

  Both side surfaces of the partition wall 23 have openings 19a, and the partition wall 23c is filled with a foam heat insulating material 22 in the same manner as the heat insulation box 19.

  In addition, the vegetable compartment 26 arranged at the upper part of the third partition wall 23c has a cooling temperature of about 2 ° C. to 5 ° C., and the freezing room 27 arranged at the lower part thereof has a cooling temperature of about −20 ° C. Different temperature zones are set up and down.

  The vegetable compartment 26 and the freezer compartment 27 are respectively closed at the front opening 19a by the vegetable compartment door 28 and the freezer compartment door 29, and the vegetable compartment 26, the vegetable compartment door 28, the freezer compartment 27, and the freezer compartment door 29 are respectively provided. By being connected by the rail member 30, it can be pulled out and slid in the front-rear direction.

  The rail member 30 includes a fixed rail 30a, a movable rail 30b, an intermediate traveling rail 30c provided between the fixed rail 30a and the movable rail 30b, and an engagement between the intermediate traveling rail 30c, the fixed rail 30a, and the movable rail 30b. The fixed rail 30a is fixed to both side walls of the inner box 20 with the fixed rail 30a, the moving rail 30b, the intermediate traveling rail 30c, and the bearing 30d pre-installed. And each storage room and the storage room door are connected by fixing the moving rail 30b to each storage room door.

  Although not shown here, the rail member 30 may be disposed on the partition wall 23.

  In addition, the rail member 30 which consists of the fixed rail 30a, the moving rail 30b, and the intermediate | middle traveling rail 30c arrange | positioned via the bearing 30d between the fixed rail 30a and the moving rail 30b is integrated beforehand, The clearance between the rails can be set to a minimum.

  Furthermore, the left and right rail members 30 fixed to the both side wall surfaces of the inner box 20 have a symmetrical shape, and exhibit better sliding performance by being provided with both left and right.

  The container 31 of each storage chamber is supported by the moving rail 30b of the rail member 30 after the rail member 30 is fixed to the inner box 20, and is moved back and forth together with the moving rail 30b in synchronization with pulling out each storage chamber door in the front-rear direction. Furthermore, the container 31 is detachable upward when each storage chamber door is fully opened.

  Further, the fixed positions of the fixed rails 30a of the pair of left and right rail members 30 are restricted by the fixing members 35 that are position restricting means via the inner box 20, respectively.

  Since the fixing member 35 is disposed on the side of the inner box 20 that is filled with the foam heat insulating material 22, the fixing member 35 is not exposed to each storage chamber.

  Although not shown here, the fixing member 35 may be provided with a hole.

  Moreover, when the fixing member 35 becomes large, it may be divided into a plurality of front and rear parts.

  Furthermore, the bearing 30d may be a rotation support member, and for example, a roller or the like may be used.

  The temperature compensation heater 36 is attached to the fixing member 35 via the inner box 20, and the position thereof is attached to the back surface side where the surface on which the fixing rail 30 a is attached to the inner box is projected.

  Further, it is desirable that the temperature compensation heater 36 is thermally insulated by a heat insulating material 37 or the like on the fixing member 35 or the outer box 21 side.

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

  When each storage room door is pulled out, the moving rail 30b and the intermediate traveling rail 30c of the rail member 30 provided on both sides of each storage room slide smoothly toward the front side as the bearing 30d rotates.

  Along with this, the container 31 supported by the rail member 30 is also pulled out to the front, and the object to be cooled stored in the container 31 can be taken out and a new object to be cooled can be stored.

  As described above, according to the present embodiment, the clearance between the fixed rail 30a and the movable rail 30b is fixed by fixing the rail member 30 in which the fixed rail 30a and the movable rail 30b are assembled in advance to both side walls of the inner box 20. It can be made small, and a high-quality drawer with little backlash can be configured. In addition, since the variation in attachment can be reduced by reducing the clearance, it is possible to suppress the appearance defect such as the inclination due to the door installation failure and the non-uniform spacing with other doors. These effects are more effective as the allowance for the rail member 30 is larger. Further, by supporting the space between the fixed rail 30a and the moving rail 30b with a bearing 30d which is a rotation support member, the moving rail 30b can move smoothly even when a load is applied to the container 31, thereby reducing the operating force of the drawer. Can improve usability.

  Further, by restricting the mounting position of the fixed rail 30 a of the rail member 30 by the fixing member 35, the width dimension or parallelism of the pair of left and right rail members 30 can be maintained as specified, and the foaming of the heat insulating box 19 by the fixing member 35. The rail member 30 in which the clearance between the fixed rail 30a and the moving rail 30b is set to be small by suppressing the dimensional change due to heat shrinkage at the time of cooling after filling the heat insulating material 22 is mounted on both side wall surfaces of the inner box 20 in a state in which the rail member 30 is set in advance. Since the dimensional accuracy between the pair of left and right rail members 30 can be kept high even in the fixing specification, the operability when the container 31 is pulled out can be enhanced by the fixing member 35 that is a position restricting means. In addition, it is possible to ensure operation reliability over a long period of time.

  Furthermore, the rail member 30 is made of a heat conductive member such as a metal, and at the time of cooling in the cabinet, dew condensation occurs between the surface of the rail member 30, the intermediate traveling rail 30c, the fixed rail 30a, the moving rail 30b, and the bearing 30d. Or frost or freeze, which may adversely affect the running performance of the rail when the door is opened or closed. Therefore, by attaching the temperature compensation heater 36 between the inner box 20 and the fixed member 35 to the projection surface of the fixed rail 30a of the rail member 30, the rail member 30 is generated when the vegetable compartment 26 or the freezer compartment 27 is cooled. The temperature of the rail members is adjusted by applying a voltage to the temperature compensation heaters 36a and 36b against the influence on the door opening and closing due to the predicted operability deterioration of the rails due to dew condensation and frost formation, thereby preventing condensation and frost formation. , Ensure good operability of the door. At this time, in order to efficiently conduct heat from the temperature compensation heater 36 to the rail member 30, the temperature compensation heater 36 is strengthened by heat insulation on the fixing member 35 and the outer box 21 side of the temperature compensation heater 36. The heat of 36a, 36b is efficiently transferred to the rail member, and the input of the heater can be reduced.

  Next, the operation of the temperature compensation heaters 36a and 36b will be described.

  FIG. 5 is a time chart showing the operating state of the refrigerator.

  First, the vegetable room 26 will be described. The temperature compensation heater 36a in the vegetable compartment 26 is not normally energized. When the vegetable compartment door 28 is opened and closed, the door switch 32 detects the door opening and closing, and after the vegetable compartment door 28 is closed, for example, the temperature compensation heater 36a is energized for 5 minutes.

  Next, the freezer compartment 27 will be described. Since the freezer compartment is always kept in the vicinity of −20 ° C., the temperature compensation heater 36b is always energized so that the rail member has a temperature higher than the freezer compartment temperature. When the freezer compartment door 29 is opened and closed, the door switch 32 detects the opening and closing of the door, and when it is opened, the energization of the temperature compensation heater 36b is stopped. Since the rail member 30 is frosted when the freezer compartment door 29 is open, the heater temperature is controlled to be higher than normal after being closed. At the time of frosting, energization of the defrost heater 33 is detected, and energization of the temperature compensation heater 36b is stopped. After the defrost is completed, the inside of the freezer compartment 27 is in a humid state and frosts on the rail member having a low temperature. Therefore, the temperature compensation heater 36b is heated more than usual and is energized for T minutes.

  The temperature compensation heaters 36a and 36b are not energized when the internal temperature is 0 ° C. or higher. When the temperature is 0 ° C. or lower, it is set to always energize.

  When the refrigerator is turned on for the first time, the temperature compensation heater is not energized until the compressor 34 is stopped.

  In addition, regarding the heat insulating material 37, you may use a vacuum heat insulating material with more heat insulation efficiency. In that case, heat is more difficult to escape to the outside, and heat transfer to the rail member 30 is further improved.

  Although not shown, the temperature compensation heater 36 may be attached by being buried in close contact with the fixed rail 30a after insulation measures are taken. Thereby, the rail member 30 which is a member requiring heating can be directly heated, and the heat transfer efficiency is good and energy saving can be achieved.

  In the present embodiment, the vegetable compartment 26 and the freezing compartment 27 are described as using the rail member 30; however, the embodiment can be appropriately applied to a storage compartment provided with a drawer container. For example, you may use for the switching room 25 located in the upper part of the vegetable compartment 26, the ice making room (not shown) attached to the side of the switching room 25, etc.

  As described above, the refrigerator according to the present invention has a small backlash, can smoothly open and close the drawer even when a load is applied to the container, and improves reliability by preventing condensation and frost formation. Since the drawer storage can be performed with high quality and ease of use, it can be applied to uses such as a drawer device of a cooling storage unit equipped with a refrigeration apparatus.

Side sectional view of the refrigerator according to Embodiment 1 of the present invention. AA line sectional view of FIG. An exploded view of the rail member of the refrigerator of the same embodiment Sectional drawing of the rail member vicinity of the refrigerator of the embodiment Time chart showing the operating state of the refrigerator of the same embodiment Perspective view of a conventional drawer door of a refrigerator Sectional view of the main part of a conventional refrigerator drawer device Sectional view of a conventional refrigerator drawer device

Explanation of symbols

18 Refrigerator 19 Heat insulation box 19a Front opening 20 Inner box 21 Outer box 22 Foam insulation 30 Rail member 30a Fixed rail 30b Moving rail 31 Container 32 Door switch 33 Defrost heater 35 Fixed member 36 Temperature compensation heater 36a Temperature compensation heater (vegetable Room)
36b Temperature compensation heater (for freezer compartment)
37 Thermal insulation

Claims (8)

  A heat insulating box having a front opening made of an inner box, an outer box, and a foam heat insulating material filled between the inner box and the outer box; a container provided inside the heat insulating box; and The rail member is provided on the left and right sides, the rail member has a fixed rail and a moving rail, and the fixed rail and the moving rail are respectively supported by a rotation support member and the fixed rail With the moving rail pre-installed, it is attached to the inner box provided with the drawer door and the rail position restricting means, and then the container is supported by the rail member, and the dew condensation / frosting countermeasure means is applied to the rail member. A refrigerator characterized by being provided.   The refrigerator according to claim 1, wherein the dew condensation / frosting countermeasure unit uses a temperature compensation heater as a fixed rail position regulating unit.   The refrigerator according to claim 1 or 2, wherein the temperature compensation heater is controlled by a timing of door SW and defrost.   The refrigerator according to any one of claims 1 to 3, wherein the temperature compensation heater is increased by ΔT seconds after opening and closing the door and after defrosting.   The refrigerator according to any one of claims 1 to 4, wherein the temperature compensating heater is not energized while the door is opened or closed or during defrosting.   The refrigerator according to any one of claims 1 to 5, wherein the temperature compensating heater is energized when an internal temperature is 0 ° C or lower.   The refrigerator according to any one of claims 1 to 6, wherein the temperature compensation heater is not energized when the internal temperature is 0 ° C or higher.   The refrigerator according to any one of claims 1 to 7, wherein the temperature compensating heater is not energized when the refrigerator is started.

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