ES2249429T3 - FRIDGE APPARATUS - Google Patents

Abstract

The invention relates to a refrigeration device (10) comprising a storage compartment (22) which is mounted on rollers and can be pulled out of the housing (11) of the refrigeration device. The problem with known refrigeration devices (10) is that the storage compartment (22), after being pulled out approximately halfway, opens independently to its full extent, colliding audibly with an end stop. To prevent an inadequacy of this type, the invention is characterized in that the guide tracks (35) are configured as two oblique planes (36) of differing lengths that are interconnected, whereby the longer oblique plane causes the storage compartment to close independently.

Description

Refrigerator

The invention relates to a refrigerating apparatus, such as a refrigerator cabinet, a combined refrigerator cabinet and freezer or similar, with a heated housing inside a refrigerator compartment with at least one tray driven as a drawer, which has a door, and that on its two longitudinal sides it is supported mobile by means of displacement rollers arranged approximately facing each other in pairs, with rollers of displacement arranged in the tray, advanced in the direction of introduction of the tray, and rollers of displacement fixed, arranged at least approximately in the area near the access hole to the refrigerator compartment, each of the which is supported by rolling on the corresponding guidance track That corresponds to him.

A refrigerating device according to the preamble of claim 1 is known from patent EP0780645.

In refrigerators, the Made up of the refrigerator compartments with trays conducted as drawers, whose front face is provided a door to close the refrigerator compartment. These trays removable drawer mode have been comfortable for customers especially in regard to your cargo with the items to refrigerate. However, in known trays of this class has manifested the problem that the drawer-like tray is automatically open completely when you have reached a career of extraction of approximately 50%. During this process of opening can also happen that the tray undergoes an acceleration relatively intense in the sense of openness, stumbling upon the final speed thus reached against an extreme stop, causing with It an unpleasant shock noise. In addition to this, in this run against the final stop there is a risk that items to be refrigerated placed on the tray stumble against each other or they fall and eventually suffer damage.

The invention aims to avoid the drawbacks of the state of the art in a refrigerator according to the preamble of claim 1, applying measures Simple constructive

This objective is resolved in accordance with the invention by the fact that at least one of the tracks of guided presents two consecutive inclined planes to each other, of different length, which at the junction point form a crest, where the inclined plane made longer with respect to the crest exerts a driving force on the tray in front, towards the cold room.

Through the configuration object of the invention of at least one of the guidance tracks, the career of tray removal determined by them is divided into two partial paths of different lengths, formed by planes inclined as a ramp, of which only after overcoming the longest travel section causes automatic opening to its final position with a defined acceleration path and shortened. By opening the tray caused by this controlled way, until its final stop, is produced for the tray a predetermined final speed at least essentially due to the shortening of the route it is noticeably below the final speed that appears in the trays as a drawer conducted according to the state of the art. In addition to this, due to the different length dimensions of the inclined planes you get that the tray, in most cases of opening, move back to its closed position automatically and, for Therefore, energetically convenient for the refrigerator, being able to influence the closing speed of the tray especially simple because of the inclined position of the track Guided longer and its length. In addition, the union of the two planes inclined as a crest that causes the inversion leads to the person who handles the tray perceives relatively clear the moment of exceeding the crest that serves as a point of investment and, therefore, the person who manages it receives a clear indication in which tray opening position it force again to its closed position or its position open

In any state of loading the tray especially secure opening and closing controlled by the guidance tracks, made in the form of inclined planes, if in accordance with an embodiment preferred of the object of the invention is that the planes inclined that join together are provided in two of the guide tracks that serve to support the rollers of displacement arranged at equal height.

According to a following embodiment preferred, in a refrigerating device with planned guidance tracks on the side walls of the refrigerator, which are equipped of a toothed as a zipper, in which two rollers roll of displacement equipped with an external teeth of equal diameter primitive, coupled with each other in a substantially rigid way and facing each other at least on the same axis, which are formed by the advanced scroll rollers, it is provided that the two inclined planes are provided on tracks of guided arranged laterally in the tray.

By arranging the guidance tracks on the tray, these can be specially adapted simple and objective to the respective tray in relation to its extraction stroke and its storage capacity, both as far as which refers to the length as to the slope of the planes inclined

Guidance tracks composed of planes inclined of different length can be manufactured in a way especially simple, in terms of manufacturing technique, if in accordance with another advantageous embodiment of the object of the invention is provided that the guide tracks with planes inclined of different length are arranged in the tray in its lateral longitudinal faces, on the underside of support elements made as stringers.

The movement of the tray caused by the inclined planes is especially uniform if according to a following preferred embodiment of the object of the invention is provided that the inclined planes present the less essentially the same angle of attack in relation to a horizontal.

According to another embodiment preferred of the object of the invention is provided that the plane shorter inclined then have a guided section arranged at least substantially horizontal.

Due to the immediate union of the guide section horizontal to the shorter inclined plane, which causes the opening total of the tray after exceeding the crest, it is created for the tray operated in the direction of opening by the inclined plane on the guiding track an exit stroke for the roller displacement that rests on the guidance track, thereby the acceleration of the tray is avoided until its end stop that limit your extraction run, so that the movement of automatic opening runs at least to a large extent silent

The length of the inclined planes is determined especially convenient if according to Another preferred embodiment of the object of the invention is provided that the inclined planes that join together and the stretch horizontal guidance define at least essentially the race of tray removal.

According to a following embodiment preferred of the object of the invention is provided that the plane longer inclined present a length in the range between 50% and 90%, but preferably 80% of the extraction stroke of the tray.

By that kind of subdivision of the length between the shortest inclined plane and the longest inclined plane it ensures, on the one hand, in most cases of handling the tray object of the invention, which after a process of opening it automatically moves to its closed position. By other part, by unequal subdivision of lengths between the inclined plane shorter and longer, is achieved, in favor of the latter, the advantage that, when moving the tray from its open position to its closed position and after overcoming the inclined plane made shorter, the person who drives it receives assistance in the closing movement due to the plane tilted longer when closing the tray.

The drawer-guided tray is held especially safely, within the guidance section horizontal that defines the open position of the tray, if according to a last preferred embodiment of the object of the invention is provided that in the transition between the plane shorter slope and the horizontal guidance section is provided a notch.

The invention is explained in the description that figure below using two embodiments Simplified represented in the drawing.

The figures show:

Fig. 1 in a schematic representation simplified, in a first embodiment, the part bottom of a multi-temperature domestic refrigerator, in a side view, with a sliding tray guided by way of drawer by means of scroll rollers, equipped with a door, on whose side beams are provided on the face lower guide tracks formed by inclined planes of different length,

Fig. 2 the tray with the guidance tracks for the scroll rollers, in a perspective view from above,

Fig. 3 the upper section of the tray with the guide tracks arranged on the underside of the stringers lateral, formed by inclined planes, in one view side,

Fig. 4 in a schematic representation simplified, the bottom of a household refrigerator of multiple temperatures, in a second embodiment in a side view, with a sliding tray guided by way of drawer by means of scroll rollers, equipped with a door, whose sliding rollers rest on tracks of guidance made as inclined planes of guide rails provided on the side walls of the refrigerating enclosure,

Fig. 5 the tray with the guide rail for the scroll rollers, in a perspective view from up and

Fig. 6 one of the guide rails according to the Figure 4, in a front view.

According to figure 1 it is shown in a simplified schematic representation the bottom of a 10 multi-temperature domestic refrigeration appliance, with a heat-resistant housing 11, which has an outer covering 12, a layer of thermal insulation 13 produced by foaming and a interior lining 15 formed without chip removal that It is used to cover a refrigerated room 14. This Inner lining is endowed in its side walls 16 facing each other (of which only one is represented) of guided profiles arranged spaced apart from each other, with a U-shaped section and placed on the side walls 16, of which the guide profile 17 arranged lower within the refrigerator enclosure 14 presents on its arm 18 the U-profile located at a greater depth in the installed state a guide track smooth surface 19. In front of the guide track 19, the profile of guide 17 presents in its second arm 20 a serrated 21 made as a zipper, which on the inside of the arm 20 next to the guidance track 19 is made up of only one part with the guide profile 17 manufactured as an injected part of plastic.

Toothed 21 is used for parallel driving of a tray 22 removable as a drawer enclosure refrigerator 14, on whose front face a door is provided heat exchanger 23 that serves to close the refrigeration room 14, which It is equipped peripherally along its inner face oriented towards the refrigerating room 14, and at its edges lateral, with a magnetic gasket 24. In the closed position of the door 23, it is attached to the edge of the enclosure's mouth fridge 14, sealing it. Tray 22 is equipped in its top free end of its walls surrounding the tray, with a frame 25 as a frame, which is built on sections to stringer mode joined together. Of these sections by way of stringers, the section away from the door is made as crossbar 26 with bearing housings 27 arranged in the area near its lateral end sections, for support rotating a shaft 28. At the free ends of shaft 28, which protrude laterally with respect to crossbar 26, are fixed two displacement rollers 29 without torsion. Roller displacement has a raceway 30 performed as smooth surface, with which a section is joined in one piece of roller 31 arranged adjacent to it, which has a toothed outer 32, whose tooth module is adjusted to the module tooth of the opposite teeth 21. In front of the crossbar 26, the frame 25 has another crossbar 33 that serves to fix the door 23 to the  tray 22. Between the two crossbars 26 and 33 spaced apart longitudinal stringers 34 are provided laterally in tray 22, which on its lower side of the crossbar they are equipped with a guide surface 35 with a smooth surface.

As you can see especially by the figure 3, the guidance track 35 is subdivided into four sections longitudinal, of which a first section made as a stretch inclined 36 extends between a crest 37 that serves as a point of inversion and a horizontal section 28 arranged by the end of the side from the door of tray 22 and which serves as a path for deceleration. The inclined plane 36 that ascends continuously from the end of the door side of the tray 28 to the crest 37, occupies approximately 80% of the extraction run of tray 22, which is possible by the guide track 35. In the same crest 37, the inclined plane 36 is attached to a second inclined plane 39. The inclined plane 39 of length l extends from crest 37 to a deceleration path that serves as notch 40, and goes down continuously from the crest 37 to notch 40. Notch 40 forms a transition between the inclined plane 39 and a horizontal guide section 41, which together with the inclined planes 36 and 39 define the length of the guidance track 35.

As you can see from figure 1, the clues of guided 35 provided in the lateral stringers 34 serve to rest the tray 22 on the displacement rollers 42 provided on the two side walls 16 in the mouth area of access to the refrigerator 14, which has a raceway smooth by which the displacement rollers 42 are supported on the guidance track 35.

The displacement rollers 42 arranged to equal height and depth at the edge of the enclosure's mouth refrigerator 14 serve along with the scroll rollers 19 supported on shaft 28 to support and guide tray 22, where 29 offset rollers with outer teeth gear with the opposite teeth 21 to get a straight line of the tray 22, while scroll rollers 42 support the guidance track 35.

In the representation shown in figure 1 the tray 22, which can be moved as a drawer in the direction of the double arrow, it is in an open position in which the displacement rollers 42 still rest on the plane inclined shorter 39. In its open position, tray 22 is automatically transported by inclined plane 39 after overcome the crest 37, and the tray 22 is decelerated or reaches stop within guidance section 41. If the user persists, during the extraction movement, in the sense of extraction of tray 22 before ridge 37, then tray 22 is automatically brought to its resting position in the enclosure refrigerator 14 on the inclined plane 36. In this position, the displacement rollers 42 are located within the section horizontal 38 that serves as a deceleration path.

Figure 4 shows in a representation simplified schematic the bottom of a device multi-temperature domestic refrigerator 50, with a second embodiment of the invention. Same as the device refrigerator 10, also the refrigerator 50 has a housing Heated 51 with an outer liner 52, a layer of thermal insulator 53 generated by foaming and a coating interior 55 formed without chip removal that serves to cover a cold room 54. The sections of side walls of the inner lining 55 serve as side walls 56 of the cold room 54. On side walls 56 (of which only one is represented), some profiles of guided 57 arranged separately over each other, with a section in U-shaped and placed on side walls 56. Profiles they have a U-shaped section and present at their near end at the door an introduction and positioning aid 58, for some offset rollers with external teeth to be explained in more detail later. Following the help for the introduction and positioning 58 goes a guidance section 59, which in the inner face of its arm 60 of the U-profile, located at greater height in the installation position of the guiding profile 56, is provided with an opposite teeth 61 made as a zipper.

As you can see especially by the figure 3, the opposite teeth 61 is essentially subdivided into two longitudinal sections, of which a first longitudinal section extends from the introduction and positioning aid 50 up to a crest 62, and which is made as an inclined plane 63 which ascends continuously to the crest 62, whose plane inclined starts from ridge 62 to an area of curvature of the introduction and positioning aid 58. A continuation of the inclined plane 63 follows from the crest 62 a inclined background 64, which occupies at least 80% of the length of the opposite teeth 61, and starting from the crest 62 until its free end is made with a slope descending continues. Opposite the opposite teeth 61, the section of guide 59 is equipped by the inner face of its arm 55, which it is deeper in the installation position of the profile of guide 57, with a guide track 66 of smooth surface, which It also subdivides its length into two sections of different length, of which a first section made as inclined plane 67 extends from the introduction aid and positioning 58 up to a ridge 68, and that is done with an upward slope continues to it. The crest 68, which is vertically facing the crest 62, serves as a union to a inclined background 69, which occupies approximately 80% of the total length of the guide track 66, and which is made with a slope of continuous descent from crest 68 to its free end

Guiding profiles 58 serve to guide a tray 70 movable as a drawer in the direction of a double arrow, which in its access mouth is equipped with a frame 71 as a frame. The frame-like frame is composed of four sections of stringers, of which the stringer section nearest in the direction of introduction to the refrigerator 54 serves as a crossbar 72, on which an axis 74 rotatably supports by means of a bearing housing 73 provided respectively in the free ends of the crossbar 72. The shaft 74 carries on its free ends, which protrude from the free ends of the crossbar 72, two displacement rollers 75 joined without turning with axis 74, presenting a section of displacement roller 76 with a smooth surface raceway 77 and a section of displacement roller 78 joined with that forming a single piece, which on its enveloping surface is equipped with a teeth outer 79, whose tooth module is adjusted with the module tooth of the opposite teeth 61. Perpendicular to the crossbar 72 They follow laterally in tray 78 some stringers 80, which in their underside are provided with a surface track 81 smooth. The stringers 80 serve as connecting elements between the crossbar 72 and another crossbar 82, posterior in the direction of introduction of tray 70, and serving as a support for a door 83 made heat insulated. Door 83 is equipped by its interior face oriented towards the refrigerating enclosure 54 with a magnetic joint 84 arranged peripherally close to the edge.

As especially shown in Figure 4, in mounting state the tray 70 is supported on the one hand by the 75 offset rollers with external teeth, which engage with the opposite teeth 61, and on the other hand by the rollers of offset 85 arranged fixed at the edge of the mouth of the refrigerating enclosure 84 and acting together with the tracks of guided 81, and can be guided guided in the direction of the double arrow. When moving the tray out of its loading position represented in figure 4, taken out of the refrigeration room 54, to return it to the interior of the cold room 54, the section of displacement rollers 78 with external teeth or the section of smooth surface scroll rollers 76 are engaging respectively with the shortest inclined plane 63 or 67, respectively, which are arranged with a drop slope continue from crest 62 or 68, respectively, towards the edge of the mouth of the refrigerating enclosure 54. This accelerates the tray automatically to its loading position, when it is exceeded in direction of removal of tray 70 the crest 62 or 68, respectively. By moving tray 70 to its resting position inside the cold room 54 tray 70 is forced automatically to its resting position after exceeding the crest 62 or 68, respectively, due to the more inclined planes lengths 64 or 69, respectively, where door 63 is in its closed position in which the magnetic seal 84 sits on the edge of the mouth of the refrigerating enclosure 54, sealing it.

Claims (10)

1. Refrigerating apparatus (10, 50), such as a refrigerated cabinet, a combined refrigerator and freezer or similar, with a heated housing (11, 51), inside which a refrigerated enclosure is provided with at least one tray (22 , 70) conducted as a drawer, which has a door (23, 83) and is supported on its two longitudinal sides by means of displacement rollers arranged at least approximately facing each other in pairs, being provided in the tray (29, 75 ) advanced displacement rollers in the direction of insertion of the tray and displacement rollers (42, 85) arranged at least approximately fixed, in the area close to the access mouth to the refrigerating enclosure, each of which is supported rolling on an assigned corresponding guidance track, characterized in that at least one of the guidance tracks (35, 61, 66) has two inclined planes (36, 38; 63, 64; 67, 69) adjacent to each other, which in he point of attachment form a crest (37, 62, 88), where the longest inclined plane (36, 63, 69) relative to the crest (37, 62, 68) exerts a force on the tray (22, 70) thrust in the direction of the cold room (14, 54). 2. Refrigerating apparatus according to claim 1, characterized in that the inclined planes (36, 38; 63, 64; 67, 69) adjacent to each other are provided on two guide tracks (35, 61, 66) which serve to support displacement rollers (41, 75) located at the same height. 3. Refrigerating apparatus according to claim 1 or 2, with guide tracks provided on the side walls of the refrigerating enclosure, which are provided with a rack-like teeth on which two displacement rollers provided with an external teeth of equal length rotate. primitive diameter, at least substantially rigidly coupled to each other, facing each other at least on the same axis, which are formed by the front displacement rollers according to claim 1 or 2, characterized in that the two inclined planes (36, 38) they are provided on guide tracks (35) arranged laterally in the tray (22). 4. Refrigerating apparatus according to claim 3, characterized in that the guide tracks (35) with the inclined planes (36, 38) of different lengths are arranged in the tray (22) on their lateral longitudinal faces, on the underside of some support elements (34) made as stringers. 5. Refrigerating apparatus according to one of claims 1 to 4, characterized in that the inclined planes (36, 38; 63, 64; 67, 69) have essentially the same inclination angle with respect to a horizontal. 6. Refrigerating apparatus according to one of claims 1 to 5, characterized in that a horizontal section (38) is arranged with respect to the crest (37) before the inclined plane of greater length (35). 7. Refrigerating apparatus according to one of claims 1 to 5, characterized in that, after the shortest inclined plane (38), a guide section (40) arranged at least substantially horizontal is located with respect to the ridge (37). 8. Refrigerating apparatus according to one of claims 1 to 7, characterized in that the inclined planes (36, 38) adjacent to each other and the horizontal guide section (40) define at least essentially the extraction stroke of the tray (22 ). 9. Refrigerating apparatus according to one of claims 1 to 8, characterized in that the longest inclined plane (36, 64, 69) has a length in the range between 50% and 90%, but preferably 80% of the stroke tray removal (22, 70). 10. Refrigeration apparatus according to claim 6, characterized in that a notch (39) is provided in the transition between the shortest inclined plane (38) and the horizontal guide section (40).