Refrigeration – Processes – Circulating external gas
Patent
1994-07-26
1996-06-11
Tapolcai, William E.
Refrigeration
Processes
Circulating external gas
62256, A47F 304
Patent
active
055244432
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The invention relates to a method of cooling a vending machine comprising a plurality of drums rotatably journalled about a vertical axis, each drum being placed behind a pane at the front side of the vending machine, said pane being opened for a direct removal of a product stored on the corresponding drum at the activation of the vending machine, by which method a flow of cold air is directed substantially between the products adjacent the delivery area and the panes, and at least one portion of the flow of cold air is guided as an air carpet from above and downwards to an execution opening placed at the bottom of the vending machine. The invention relates furthermore to a vending machine for carrying out this method.
BACKGROUND ART
A desire of storing food products in vending machines for a long period, i.e. more than 48 hours, involves a requirement to the storing room temperature which must be between 0.degree. to 3.degree. C. inside the vending machine even during the removal of the products. This requirement has necessitated that optimum cold flows of air are applied to the storing room so as the keep the temperature low everywhere therein also during the removal of the product and so as to avoid formation of dew on the cooled portions subjected to the effects of the surroundings during the delivery of the product.
From DE-A-3 040 339 a vending machine is known, in which cold air is guided downwards behind a glass door in front of an array of shelves.
DESCRIPTION OF THE INVENTION
The method according to the invention is characterised in that the portion of the flow of cold air guided as an air carpet from above and downwards is guided downwards on the outer side of the panes.
In this manner the products are particularly well protected against the high temperatures of the surroundings when a pane is open. In addition, formation of dew is efficiently prevented on the remaining panes, which is especially due to the fact that a layer of cold air is always maintained on both sides of the panes.
The cooled portions subjected to the surroundings during the delivery of the product are prevented from gathering dew especially on account of the cold air carpet made of dry air.
The invention relates furthermore to a vending machine for carrying out the method, said vending machine comprising a plurality of drums rotorably journalled about a vertical axis, each drum being placed behind a pane at the front side of the vending machine, said pane being adapted to be opened for a direct removal of a product stored on the corresponding drum at the activation of the vending machine, and where the vending machine comprises means for providing a continuous flow of cold air to and substantially in front of the products adjacent the panes, and where means are provided for directing a portion of the flow of air supplied in front of the products are an air carpet from above and downwards to an exsuction opening at the bottom of the vending machine. The vending machine according to the invention is characterised in that it is provided with means for directing the portion of the flow of air supplied as an air carpet from above and downwards on the other side of the panes. In this manner the panes are efficiently protected against formation of dew at the same time as a protecting carpet of cold, dry air is provided in front of the opening being opened at the activation of the vending machine.
BRIEF DESCRIPTION OF THE DRAWING
The invention is described in greater detail below with reference to the accompanying drawing, in which
FIG. 1 is a horizontal, sectional view through a preferred embodiment of a vending machine according to the invention, which includes a plurality of drums rotatably journalled about a vertical axis, and removal openings allowing removal of the products at activation of the vending machine, which besides comprises a large common outer insulating pane and an inner pane associated with each drum,
FIG. 2A is a front perspective view of the same vending machine, whereby parts have bee
REFERENCES:
patent: 3365907 (1968-01-01), Barroero
patent: 3769805 (1973-11-01), Corini
patent: 4369632 (1983-01-01), Abraham
patent: 4379391 (1983-04-01), Rhee
patent: 4831841 (1989-05-01), Falk
patent: 5058393 (1991-10-01), Callon et al.
Tapolcai William E.
Witteborg A/S
LandOfFree
Method of cooling a vending machine and a vending machine for ca does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of cooling a vending machine and a vending machine for ca, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of cooling a vending machine and a vending machine for ca will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-346152