JP2006214643A - Refrigerator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a means for preventing dew condensation and frost formation on a rail part in a refrigerator having a drawer of little rattling, high quality, small control force even in application of load, and high usability, with respect to the refrigerator comprising a drawer device. <P>SOLUTION: A rail member 30 is constituted by arranging a fixed rail 30a, a moving rail 30b, an intermediate traveling rail 30c mounted between the fixed rail 30a and the moving rail 30b, a plurality of bearings 30d as rotation supporting members for supporting engagements of the intermediate traveling rail 30c, and the fixed rail 30a and the moving rail 30b, and a temperature compensating heater 33 for preventing dew condensation and frost formation thereon, on a plane portion of a connecting member 32, thus control force of the drawer can be reduced while improving reliability on dew condensation and frost formation. The usability of the refrigerator can be improved. <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. 10 is a perspective view of a drawer door of a conventional refrigerator. FIG. 11 is a cross-sectional view of a main part of a conventional refrigerator drawer device. FIG. 12 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-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 little backlash 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 a small backlash, can smoothly open and close the drawer 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 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. Container, a rail member that enables the container to move back and forth, and a connecting member that connects the fixed rail. The rail member is provided on the left and right, and the rail member has a fixed rail and a moving rail. The fixed rail and the movable rail are each supported by a rotation support member, and the fixed rail and the movable rail are assembled in advance, attached to a drawer door provided with a rail position restricting means, and an inner box, and the left and right fixed rails Embedded in the foam insulation of the heat insulation box, and then the container is supported on the rail member, and a temperature compensation heater is provided on the flat surface of the connection member, thereby reducing the rail surface temperature. Co Condensation of the rail member by the trawl, can be improved frost formation, the reliability of operation due freeze.

  The invention according to claim 2 controls the temperature compensation heater according to the invention according to claim 1 by the timing of the door SW and the defrost, and thereby, the temperature of the rail surface can be easily adjusted by an electric signal. This makes it possible to reduce input and improve reliability.

  According to the third aspect of the present invention, the control of the temperature compensated heater according to the second aspect of the present invention is to increase the heater input after opening / closing the door or after the defrosting, and ΔT seconds later. Energy saving and reliability can be improved.

  According to the fourth aspect of the present invention, the temperature compensated heater of the second aspect of the invention is controlled after the door is opened and closed, the defrost is turned off, or the input is reduced. Energy saving and reliability that suggest input can be improved.

  The invention according to claim 5 uses the control of the temperature compensation heater of the invention according to claim 1 when the internal temperature is 0 ° or less, thereby improving energy saving and reliability by temperature adjustment. be able to.

  The invention described in claim 6 controls the temperature compensation heater according to the invention described in claim 1 when the inside temperature is 0 ° or more, thereby improving energy saving and reliability by adjusting the temperature. be able to.

  According to the seventh aspect of the present invention, the control of the temperature compensation heater according to the first aspect of the invention is cut off when the refrigerator is started, whereby energy saving and reliability can be improved by reducing input at the time of starting. .

  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 open portions 23d. In particular, the partition wall 23c is filled with the foam heat insulating material 22 in the same manner as the heat insulating box body 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 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 connecting member 32 is disposed on the inner box 20 on the side filled with the foam heat insulating material 22, the connecting member 32 is structured not to be 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 heat insulating material 22.

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

  Further, when the connecting member 32 becomes large, the connecting member 32 may be divided into a plurality of 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 33 is attached to the flat portion of the connecting member 32, and its position is attached to the vegetable compartment 26 side of the third partition wall 23c.

  Further, it is desirable that the temperature compensation heater 33 insulates the freezer compartment 27 side of the third partition wall 23c by the foam heat insulating material 22 or the like.

  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 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 regulating 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 compensation heater 33 to the flat surface of the connecting member 32, a door caused by deteriorating operability of the rail due to condensation or frost that is predicted to occur on the rail member 30 when the vegetable compartment 26 or the freezer compartment 27 is cooled. The temperature of the rail member 30 is adjusted by applying a voltage to the temperature compensation heater 33 with respect to the influence on opening and closing, preventing condensation and frost formation, and ensuring good operability of the door. At this time, in order to efficiently conduct heat from the temperature compensation heater 33 to the rail member 30, the connecting member 32 and the outer box 21 side of the temperature compensation heater 33 are insulatively insulated by the foam heat insulating material 34. The heat of the compensation heater 33 is efficiently transferred to the rail member 30, and the heater input can be reduced.

  In addition, regarding the foam 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 freezer compartment 27 and heat transfer to the rail member 30 is further improved.

  In addition, about the attachment position of the temperature compensation heater 33, after taking measures against the vegetable room 26 insulation, you may embed or attach to the fixed rail 30a. 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.

  Further, the fixed rails 30a of the pair of left and right rail members 30 may be connected by a plurality of connecting members. 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 side sectional view of the refrigerator according to the second embodiment of the present invention, and FIG. 6 is a flowchart for explaining the operation of the temperature compensation heater control device according to the second embodiment. In FIG. 5, generally, the refrigerator 18 is provided with a door SW 35 on the partition wall 23 for detecting opening and closing of the door. Further, a cooler 37 and a compressor 38 in the refrigeration cycle are arranged. In addition, a Def heater 36 that performs defrosting is provided below the cooler 37. Moreover, the temperature sensor 39 which detects temperature in each store | warehouse | chamber is provided in each store | warehouse | chamber.

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

  First, the temperature compensation heater is in an OFF state (Step 1), and a door open / close signal is detected by the door SW 35 (Step 2). When the door is opened and a detection signal is input, the signal of the Def heater 36 is detected (Step 3). When the Def heater 36 has entered, the temperature compensation heater 33 is turned on (Step 4). As a result, the temperature of the rail surface can be easily adjusted with an electrical signal, and the input can be reduced and the reliability can be improved. By appropriately heating the temperature compensation heater 33, the surface temperature of the rail member 30 is raised, and the dew point temperature or more is secured. Return to Step 1 again.

(Embodiment 3)
FIG. 5 is a side sectional view of the refrigerator according to Embodiment 3 of the present invention, and FIG. 7 is a flowchart for explaining the operation of the temperature compensation heater control apparatus according to the embodiment.

  The operation and action will be described with reference to FIGS.

  First, the temperature compensation heater 33 is in an OFF state (Step 1), and a door open / close signal is detected by the door SW 35 (Step 2). When the door is opened and a detection signal is input, the temperature compensation heater 33 is turned on (Step 4). Further, the signal of the Def heater 36 is detected (Step 3). When the Def heater 36 has entered, the temperature compensation heater 33 is turned on (Step 4). After T minutes, return to Step 1 again. Thereby, energy saving and reliability by optimization of heater input can be improved. Further, energy saving and reliability that suggest heater input when the inside temperature is high can be improved, and by appropriately heating the temperature compensation heater 33, the surface temperature of the rail member 30 is increased, and the dew point temperature or higher is reached. Secure.

(Embodiment 4)
FIG. 5 is a side sectional view of the refrigerator according to Embodiment 4 of the present invention, and FIG. 8 is a flowchart for explaining the operation of the temperature compensation heater control apparatus according to the embodiment.

  The operation and action will be described with reference to FIGS.

  First, the temperature compensation heater 33 is in an OFF state (Step 1), and the internal temperature is detected by the temperature sensor 39 (Step 2). When the internal temperature is 0 ° C. or less, the temperature compensation heater 33 is turned on (Step 3). After T minutes, return to Step 1 again. As a result, energy saving and reliability by temperature adjustment can be improved. By appropriately heating the temperature compensation heater 33, the surface temperature of the rail member 30 is increased and the dew point temperature or more is ensured.

(Embodiment 5)
FIG. 5 is a side sectional view of the refrigerator according to the fifth embodiment of the present invention, and FIG. 9 is a flowchart for explaining the operation of the temperature compensation heater control apparatus according to the fifth embodiment.

  The operation and action will be described with reference to FIGS.

  First, the temperature compensation heater 33 is in an OFF state (Step 1), and the activation of the compressor 38 is detected (Step 2). When the compressor 38 is OFF, the temperature compensation heater 33 is turned ON (Step 3). After T minutes, return to Step 1 again. As a result, energy saving and reliability can be improved by reducing input during startup, and the temperature compensation heater 33 is appropriately heated to increase the surface temperature of the rail member 30 and ensure the dew point temperature or higher.

  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. 1 of the same embodiment 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 Side sectional view of the refrigerator in the second embodiment of the present invention. Flowchart for explaining the operation of the temperature compensation heater control apparatus of the embodiment The flowchart for demonstrating operation | movement of the control apparatus of the temperature compensation heater in Embodiment 3 of this invention. The flowchart for demonstrating operation | movement of the control apparatus of the temperature compensation heater in Embodiment 4 of this invention. The flowchart for demonstrating operation | movement of the control apparatus of the temperature compensation heater in Embodiment 5 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 (rotation support member)
31 Container 32 Connecting member 33 Temperature compensation heater 34 Foam insulation 35 Door SW
36 Def heater 38 Compressor 39 Temperature sensor

Claims (7)

  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 It consists of a rail member that can be moved and a connecting member that connects the fixed rail. The rail members are provided on the left and right, the rail member has the fixed rail and the moving rail, and the fixed rail and the moving rail are respectively In a state in which the fixed rail and the movable rail are preliminarily incorporated by being supported by a rotation support member, the drawer door provided with rail position restriction means, and the connecting member that is attached to the inner box and connects the left and right fixed rails are A refrigerator, wherein the refrigerator is embedded in a foam heat insulating material of a heat insulating box, and thereafter the container is supported by the rail member, and a temperature compensation heater is provided on a flat portion of the connecting member.   The refrigerator according to claim 1, wherein the temperature compensation heater is controlled by the timing of the door SW and the defrost.   3. The refrigerator according to claim 2, wherein the heater input is increased after opening / closing the door of the temperature compensation heater or after ΔT seconds after completion of defrosting.   The refrigerator according to claim 2, wherein the temperature compensation heater is turned off after the door is opened and closed or after the defrost is completed, or the input is reduced.   The refrigerator according to claim 1, wherein the temperature compensation heater is used when the internal temperature is 0 ° or less.   The refrigerator according to claim 1, wherein the temperature compensation heater is turned off when the internal temperature is 0 ° or more.   The refrigerator according to claim 1, wherein the temperature compensating heater is turned off when the compressor is started.

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