JP2005265243A - Refrigerator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a means for preventing dew condensation and adhesion of frost in a rail part in a refrigerator provided with drawer devices having drawers capable of reducing play and operation force even if load is applied on them and providing high quality and ease of use. <P>SOLUTION: A rail member 30 has a fixed rail 30a, a movable rail 30b, an intermediate running rail 30c provided between the fixed rail 30a and the movable rail 30b, and a plurality of bearings 30d which are rotary supporting members for supporting engagement of the intermediate running rail 30c, the fixed rail 30a, and the movable rail 30b. A heater 33 for compensating temperature for preventing dew condensation and adhesion of frost is arranged in the vicinity of the rail member 30 to reduce operation force of the drawers while improving reliability for dew condensation and adhesion of frost, thereby improving ease of use of the refrigerator. <P>COPYRIGHT: (C)2005,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 and the fixed roller 6 slidably supporting the movable roller 3, the frame 2, and the connecting frame 16. It is comprised by the case 15 which was made. 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.

  And the movable roller 3 attached to the rear end of the frame 2 fixed in advance on the left and right sides of the door rear surface of the door 1 is inserted into the groove portion 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 1 is incorporated into the fixed rail 5 attached in advance to the refrigerator body side, the mounting variation of the frame 2 or the fixed rail 5 and the assemblability are reduced. In consideration of the design, a certain amount of clearance is set between the rail and the roller in the built-in 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 and a user-friendly drawer with a small operating force even when a load is applied, and the operability of the rail due to dew or frost generated during cooling It aims at providing the refrigerator corresponding to deterioration.

  In order to solve the above-described conventional problems, the refrigerator of the present invention is such that a rail member in which a fixed rail and a moving rail are incorporated in advance is fixed to the inner box wall surface, and then the container is supported by the 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 using some means for controlling the temperature or humidity of the rail surface.

  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 is high-quality and easy to use with improved reliability by dealing with condensation and frost formation. A good drawer storage can be constructed.

  The invention according to claim 1 is provided in a heat insulating box body 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 the heat insulating box body. 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 with the fixed rail and the moving rail supported in advance and supported by the support member, and then the container is supported by the rail member, and the rail member supports condensation and frost formation. By providing the means, the reliability of the operability due to condensation, frost formation, freezing, etc. of the rail member can be improved by controlling the rail surface temperature.

  In the invention described in claim 2, the dew condensation / frosting countermeasure means of the invention described in claim 1 uses a temperature compensating heater, whereby the rail surface temperature can be easily adjusted by electric input. It is possible to improve energy saving and reliability by adjusting the temperature.

  The invention according to claim 3 uses heat of the heat radiating pipe with respect to the dew condensation / frosting countermeasure means of the invention according to claim 1 or 2, and thereby the refrigerator without using a temperature assurance heater. Condensation / frosting means can be constructed at low cost using the high-temperature side condensation heat of the cooling system.

  According to a fourth aspect of the present invention, the installation position of the dew condensation / frosting means according to any one of the first to third aspects of the present invention is installed between the rail fixing member and the rail fixing reinforcing plate, so that the heat conduction efficiency is increased. The input can be reduced.

  According to a fifth aspect of the present invention, the attachment of the dew condensation / frosting means according to any one of the first to fourth aspects is provided with a low thermal conductivity member on the refrigerator outer box side or the rail reinforcing plate side. By layering, the heat conduction to the rail member can be promoted, and the input can be further reduced.

  The invention according to claim 6 can directly heat the rail fixing member by embedding or closely contacting the dew condensation / frosting means of the invention according to claim 1 or 2 in the rail fixing part, Furthermore, efficiency is improved and input can be reduced.

  The invention according to claim 7 adjusts the humidity in the container to the container when the compartment inside the heat insulating box according to any one of claims 1 to 6 is used in a vegetable room. Therefore, the rail peripheral part can be kept in a relatively low humidity state, and the dew condensation / frosting means can be simplified or eliminated.

  In the invention according to claim 8, the container in the compartment of the invention according to any one of claims 1 to 7 is formed of a highly heat-conductive material, and thereby, from the rail to the case. The heat conduction is thereby promoted, thereby suppressing the generation of a low temperature portion locally, making the inside of the cabinet a uniform temperature environment, and preventing dew condensation and frost formation.

  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 cross-sectional view of a refrigerator according to Embodiment 1 of the present invention, FIG. 2 is a cross-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 a cross-sectional view 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 an opening 19a, and the partition wall 23 is filled with a foam heat insulating material 22 in the same manner as the heat insulating 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 slidability by providing 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 rails 30a of the pair of left and right rail members 30 are restricted in their fixed positions via the inner box 20 by connecting members 32 which are position restricting means.

  Since the connection member 32 is arrange | positioned at the side filled with the foam heat insulating material 22 of the inner box 20, the connection member 32 has a structure which is not exposed in each storage chamber.

  Further, both ends of the connecting member 32 reach the vicinity of the center in the vertical direction of the vegetable compartment 26 and the freezing compartment 27, and the fixed rails 30a of the left and right rail members 30 in each storage chamber are fixed to the connecting member 32, and at least connected. The member 32 is in contact with the surface of the inner box 20 on the side filled with the foam insulation 19.

  Although not shown here, the connecting member 32 may be provided with holes.

  Further, when the connecting member 32 becomes large, it may be divided into a plurality of parts in the front and rear direction.

  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 33 is attached to the connecting member 32 via the inner box 20, and the position thereof is attached to the back surface side where the surface on which the fixed rail 30 a is attached to the inner box is projected.

  Further, it is desirable that the temperature compensating heater 33 is thermally insulated by a heat insulating material 34 or the like on the connecting member 32 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. A high-quality drawer with little backlash can be configured. Moreover, 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 connecting member 32, 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 connecting member 32. 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 the heat insulating material 22 is filled is mounted on both side walls of the inner box 20 in a state where the rail member 30 is incorporated 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 connecting member 32 which 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 a temperature compensating heater 33 between the inner box 20 and the connecting member 32 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 member is adjusted by applying a voltage to the temperature compensation heater 33 against the influence on the door opening and closing due to the deterioration of the operability of the rail 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 conduction from the temperature compensating heater 33 to the rail member 30, the connecting member 32 and the outer box 21 side of the temperature compensating heater 33 are insulatively insulated by a heat insulating material. The heat of the compensation heater 33 is efficiently transferred to the rail member, and the heater input can be reduced.

  In addition, regarding the heat insulating material 34, 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 33 may be attached to the fixed rail 30a after being insulated or in close contact with the temperature compensation heater 33. 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.

  Moreover, you may connect the fixed rail of a pair of rail member on either side with a some connection member. In this case, since the connecting member can be reduced in size by dividing the connecting member into a plurality of parts, the cost can be reduced and the weight can be reduced.

(Embodiment 2)
FIG. 5 is a perspective view of the refrigerator according to the second embodiment of the present invention. In FIG. 5, generally, in the heat insulating box 19 of the refrigerator 18, a high-pressure side heat radiating pipe 35 in the refrigeration cycle is embedded between the outer box 21 and the inner box 20.

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

  First, during the cooling operation of the refrigerator 18, the rail member 30 is one of the most cooled parts in the vegetable compartment 26 or the freezer compartment 27 because it is a good heat conducting member such as metal. Therefore, the surface temperature is below the dew point, and there is a high possibility of condensation and frost formation. Therefore, by curving the heat radiating pipe 35 so that the heat radiating pipe 35 is disposed in the vicinity of the mounting position of the rail member 30 using the heat radiating pipe 35 on the high pressure side in the refrigeration cycle as a heat source, The surface temperature of the rail member 30 is raised to ensure the dew point temperature or higher.

  As described above, in this embodiment, since the rail can be heated at the time of cooling by using the heat radiating pipe, the rail member can be heated without using the electric input by not using the temperature compensation heater 33. Therefore, energy saving can be achieved, and the number of parts and assembly man-hours can be reduced.

  Note that the heat radiating pipe 35 and the temperature compensating heater 33 may be properly used depending on the temperature zone. Thereby, more appropriate temperature adjustment becomes possible.

(Embodiment 3)
FIG. 6 is a cross-sectional view of the refrigerator according to the embodiment of the present invention. In the case of the vegetable compartment 26 in FIG. 6, a humidity adjusting plate 36 is installed above the container 31.

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

  When the relative humidity in the refrigerator is high, the dew point temperature rises, so that condensation and frost formation on the surface of the rail member 30 is likely to occur. In particular, the vegetable room 26 requires a high humidity environment in order to maintain the freshness of the input food. Therefore, when the rail member 30 is used, a temperature adjustment plate 36 using a shape memory film depending on pores and temperature / humidity for adjusting the humidity in the upper open part of the container 31 is provided. Although the inside of the container 31 is in a high humidity state, the vicinity of the rail member 30 is in a low humidity state.

  As described above, in the present embodiment, when the rail member 30 is used, a dew point temperature is lowered due to low humidity in the vicinity of the rail member 30 by attaching a humidity adjustment plate above the container 31, and condensation / frosting occurs. The temperature compensation heater 33 can be reduced in input, energy saving can be achieved, and countermeasures for condensation and frost formation can be simplified.

  In addition, you may comprise the container 31 with a good heat conductive member like a metal. As a result, the heat conduction between the rail member 30 and the container 31 is improved, so that the temperature of the rail member 30 rises and it is difficult for condensation to occur, and the input of the temperature compensating heater 33 is reduced.

(Embodiment 4)
FIG. 7 is a perspective view of a cool box built in the system kitchen according to the embodiment of this invention. In FIG. 7, a food storage unit 39 is installed below a sink 38 of a part 37 of the system kitchen. In recent years, the rail member 30 is attached to the system kitchen outer frame 40 in the drawer storage portion of the system kitchen to improve operability. When a refrigerator, a cold storage, or a freezer is built in the system kitchen, it is necessary to employ the rail member 30a in the same manner as other storage units. Also in this case, the rail member is attached to the inner box 20 of the cool box as in the first embodiment. At that time, the temperature compensating heater 33 is installed on the projection surface of the inner box 20 in order to attach to the rail member 30 in the vicinity of the rail member 30 in order to prevent condensation and frost formation.

  The operation and action of the cool box built in a part of the system kitchen configured as described above will be described below.

  The rail member is appropriately heated by the temperature compensating heater 33 on the back surface of the rail member through the inner box 20. Thereby, the rail member surface can ensure the dew point temperature or more, and condensation and frost formation can be prevented.

  As described above, in the present embodiment, it is possible to prevent dew condensation on the rail member even when the cold storage 39 is built in the part 37 of the system kitchen.

  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.

Cross-sectional view of the refrigerator in the first embodiment of the present invention AA 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 The perspective view of the refrigerator in Embodiment 2 of this invention Cross-sectional view of the refrigerator in the third embodiment of the present invention The perspective view of the refrigerator built in the system kitchen in Embodiment 4 of this invention 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 23 Partition wall 23a First partition wall 23b Second partition wall 23c Third partition wall 24 Refrigeration room 25 Switching room 26 Vegetable room 27 Freezer compartment 28 Vegetable compartment door 29 Freezer compartment door 30 Rail member 30a Fixed rail 30b Moving rail 30c Intermediate traveling rail 30d Bearing 31 Container 32 Connecting member 32a Fixed portion 32b Connecting portion 33 Temperature compensation heater 34 Heat insulating material 35 Heat radiation pipe 36 Humidity Adjustment plate 37 Part of system kitchen 38 Sink 39 Cold room 40 System kitchen outer frame

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 drawer door provided with the rail position regulating means and the inner box, and then the container is supported by the rail member, and the 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 means uses a temperature assurance heater.   The refrigerator according to claim 1 or 2, wherein the dew condensation / frosting means uses heat of a heat radiating pipe.   The refrigerator according to any one of claims 1 to 3, wherein the dew condensation / frosting means is installed between a rail fixing member and a rail fixing reinforcing plate.   The refrigerator according to any one of claims 1 to 4, wherein a low thermal conductivity member is laminated on the refrigerator outer box side or the rail reinforcing plate side for the attachment of the dew condensation / frosting countermeasure means.   The refrigerator according to claim 1 or 2, wherein the dew condensation / frosting countermeasure means is embedded in or closely attached to a rail fixing portion.   The said heat insulation uses together the humidity adjustment plate which adjusts the humidity in a container to the said container, when the division inside a solid is used in the vegetable compartment, It is any one of Claim 1 to 6 characterized by the above-mentioned. Refrigerator.   The refrigerator according to any one of claims 1 to 7, wherein the container is made of a heat-conductive material.

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