FR2783905A1 - Electric water heater with controlled and natural circulation for more efficient and more uniform water heating - Google Patents

Abstract

The water heater has a central vertical cylinder (7) with the electric heating element (8) at its base. The top of the cylinder is part-closed by a plate (3) which reduces the section available for hot water to leave, increasing water velocity and circulation in the water tank (1). A deflector plate (2) above the top of the cylinder diverts emerging water downward, increasing circulation.

Description

RECALL ASSEMBLY FOR CLOSING SPEAKER DOORS

CLIMATE.

  The invention relates to a reminder assembly for closing climatic chamber doors opening on one side comprising at least one linear reminder system bringing the door in the closed position against the frame of the

climatic enclosure furniture.

  The invention will be described more particularly for a refrigerated cabinet in which are exposed fresh, chilled or frozen products whose common name is "refrigerated display cabinet", but the invention is not limited to this type of furniture, any piece of furniture enclosure with a warm atmosphere,

  wet or not, also falls within the scope of the invention.

  When products stored in a refrigerated enclosure must remain visible as is the case in many commercial premises today, the refrigerated enclosure is fitted with glass parts, which transforms it into a refrigerated sales cabinet. There are several variations of these refrigerated display cabinets. Some have the shape of cupboards and then, it is the door itself which is transparent, others constitute chests and it is the horizontal cover which

  is glazed to allow observation of the content.

  In these types of displays, it is necessary that the goods remain perfectly visible to customers so that it is possible to preselect the goods without opening the cabinet. Consequently, it is necessary to avoid that the

  glass parts of the furniture are not covered with condensation.

  To avoid condensation, the method generally consists in maintaining the face of the glazing on the environmental side at a temperature above the dew point of the atmosphere concerned. This goal is achieved by increasing the insulation performance of the glazing. The simplest way to improve the thermal insulation performance of single glazing is to replace it with multiple glazing. This technique is easy to implement in the case of refrigerated cabinets or chests. Indeed, multiple glazing, consisting of at least two sheets of flat glass mounted parallel to each other and separated by a gas slide, easily equip this type of furniture

refrigerated sales.

  In general, a closing system is provided in relation to the closed position of the door, the system being such that the door returns

  automatically in the closed position after being opened by a customer.

  These systems are necessary to ensure closing security,

  temperature maintenance and energy consumption.

  These systems usually consist of the use of a torsion bar positioned at the axis of rotation of the door and integrated in the support frame of the glazing. In fact, due to the use of multiple insulating glazing, the thickness of the door and the need for a support frame makes it possible to insert

  easily a torsion bar without creating any extra thickness.

  However, the use of multiple glazing is not entirely satisfactory from a thermal point of view. Several solutions have been envisaged in order to further improve the thermal insulation performance of these multiple glazing units, such as, for example, the use of thin layers reflecting infrared radiation or the use of triple glazing units, one of which of

gas blades can be Krypton.

  However, the improvement remains generally modest and the use of such multiple glazing units, because of their thickness and their weight, requires the use of a support frame which gives them good mechanical strength but which creates a

significant bulk.

  This is how the French patent application filed in the name of SAINT-

  GOBAIN VITRAGE under the number FR 97/09 772 offers a door or wall for a climatic enclosure providing considerably improved thermal insulation and minimal bulk. It thus provides a door or wall for a climatic chamber consisting essentially of an insulating panel composed of at least two glass substrates between which a vacuum has been created. In this way, conventional insulating glass is therefore replaced with an empty insulating glass. This type of vacuum insulating glass has a significantly smaller total thickness

  markedly improved thermal insulation properties.

  In addition, the structure of such vacuum insulating glazing has the advantage of giving it rigidity and resistance equivalent to that of a monolithic glazing of thickness equal to the sum of the thicknesses of the glass sheets. In this way, it is no longer necessary to associate this type of glazing with a support frame. Thus, the use of a torsion bar as a closure system proves to be

  particularly bulky and unattractive.

  The subject of the invention is a reminder assembly for closing a climatic chamber door which takes up little space and does not deteriorate.

the aesthetics of the furniture.

  The invention thus provides a reminder assembly for closing a climatic chamber door opening on one side comprising at least one linear recall system bringing the door in the closed position against the frame of the climatic chamber cabinet, the linear return system is fixed to the frame of the furniture and is arranged in the axis of a cross member of the frame. Linear return system means any type of spring, piston or cylinder. In this way, it suffices to arrange the cross member of the frame so that it receives the linear return system. Thus, there is no allowance and the door keeps

its initial appearance.

  According to a preferred variant of the invention, the linear return system is fixed to the frame by means of a device allowing the adjustment of the

voltage of said system.

  According to an advantageous variant of the invention, the reminder system

  linear is a tension spring.

  In this way, it is possible to control the restoring force by means of a simple and space-saving tension adjustment system, the

  recall system then being itself of a minimum bulk.

  According to a preferred embodiment of the invention, the linear recall system

  is connected to the door by means of a link.

  According to an advantageous embodiment of the invention, the link rotates around

an axis integral with the frame.

  According to an advantageous variant of the invention, the link has a groove in which slides a stud fixed on the door. In this way, the closure assembly has three fixed points: the point of attachment of the return system to the frame, the point of rotation of the link and the point of rotation of

the door.

  According to a preferred variant of the invention, the post is fixed on the edge of the door. In this way, the closure assembly remains discreet and easy to put on.

in action.

  According to a preferred embodiment of the invention, the groove has a notch in which the post is housed at a determined opening angle of the door. Preferably, the opening angle of the door is at least 80. In this way, the closing system advantageously makes it possible to block the door in the open position. Such blocking is necessary when, for example,

filling furniture.

  According to an advantageous embodiment of the invention, the axis of rotation of the

  door is offset from the door plane.

  According to a preferred variant of the invention, the door is made up

  mainly vacuum glazing.

  The reminder assembly for closing doors according to the invention makes it possible to obtain automatic closing of the doors as well as their blocking in the open position for a determined opening angle and which replaces the known torsion bar by providing a small footprint and by not deteriorating the aesthetics

of furniture.

  Other details and advantageous characteristics of the invention will emerge,

  below, from the description of an exemplary embodiment with reference to the figures

  attached which represent: - Figure 1: a horizontal section of a return assembly for closure according to the invention, - Figures 2a, 2b, 2c and 2d: horizontal sections of the return assembly

  for closing of FIG. 1 at different opening angles.

  It should be noted first of all that, for the sake of clarity, all the figures

  not strictly respect the proportions between the various elements.

  Figure 1 shows the reminder assembly for closing doors

  climatic chamber opening on one side according to the invention.

  This closing return assembly includes a return system in the form of a tension spring 1 which allows the door 2 to be brought back

  closed position against the frame 3 of the climatic enclosure cabinet.

  Door 2 of the climatic enclosure furniture revolves around an axis 4 which is

  off-center with respect to the plane of door 2 and which is integral with frame 3.

  The tension spring 1 is in relation to the door 2 via

  a link 5. Said link 5 rotates about an axis 6 integral with the frame 3.

  The tension spring 1 is fixed to the link 5 by any means known to a person skilled in the art such as, for example, by hooking the end of the spring of

  pull 1 in a hole in the link 5 provided for this purpose.

  The link 6 has a groove 7 in which slides a stud 8 fixed on the edge of the door 2. Said groove 7 has a notch 9 in which

  the lug 9 is housed at a determined opening angle of the door 2.

  The tension spring 1 is fixed to the frame 3 by means of a screw-nut system 10-11. The tension of the tension spring 1 is then adjusted.

by action of the nut 11.

  The assembly of FIGS. 2a, 2b, 2c and 2d represents the same return assembly for closure as that of FIG. 1 but at different opening angles

from door 2.

  FIG. 2a represents the door 2 in the closed position, ie at an opening angle a = 0. In this position, the tension spring 1 exerts a permanent force on the link 5 transmitted to the door 2 via the lug 8 so as to keep the door closed. The effort could be, for example,

1000 N.

  During the different opening phases from a = 0 to ca = 90, the tension spring 1 exerts a force on the principle described above on the door 2 and the

link 5.

  The effort to open door 2 remains below a limit set by standard EN 60-335-2-24 of less than 70 N. Figures 2b and 2c respectively show door 2 in position

  opening for ca = 30 and ca = 60.

  Figure 2d shows door 2 in the open position for c = 90. When a = 90, the tenon 8 is housed in the notch 9 of the groove 7 of the bieillette, which makes it possible to block the door 2 in the open position. To unlock the locking system of door 2, a slight manual closing effort on door 2 is necessary, door 2 will then close automatically under the effect of

tension spring 1.

  The invention is not limited to this particular type of embodiment and must be interpreted in a nonlimiting manner and encompassing any type of reminder assembly for closing climatic chamber doors opening on one side comprising at least one system linear return bringing the door in the closed position against the frame of the climatic enclosure cabinet, the linear recall system being fixed to the frame of the cabinet and arranged in the axis of a cross member of said frame.

Claims (11)

  1. Reminder assembly for closing climatic chamber doors opening from one side comprising at least one linear recall system bringing the door to the closed position against the frame of the climatic chamber cabinet, characterized in that the linear recall system is attached to the   frame of the furniture and is arranged in the axis of a cross member of the frame.   2. recall assembly for closure according to claim 1, characterized in that the linear recall system is fixed to the frame by means of   a device for adjusting the system voltage.   3. recall assembly for closure according to claim 1 or 2,   characterized in that the linear return system is a tension spring.   4. Reminder assembly for closure according to one of claims 1 to 3,   characterized in that the linear recall system is related to the door   via a link.   5. Reminder assembly for closure according to claim 4, characterized   in that the link rotates about an axis integral with the frame.   6. return assembly for closure according to claim 4 or 5, characterized in that the link has a groove in which slides a tenon attached to the door.   7. Closure return assembly according to claim 6, characterized   in that the post is fixed on the edge of the door.   8. Reminder assembly for closure according to one of claims 6 or   7, characterized in that the groove has a notch in which is housed   the post at a determined door opening angle.   9. Reminder assembly for closure according to claim 8, characterized   in that the opening angle of the door is at least 80.   10. Reminder assembly for closure according to one of claims   previous, characterized in that the axis of rotation of the door is offset by compared to the door plan.   11. Reminder assembly for closure according to one of claims   previous, characterized in that the door consists mainly of a vacuum glazing.