Refrigerated display case with improved thermal insulation system
阅读说明:本技术 具有改进的隔热系统的冷藏展示柜 (Refrigerated display case with improved thermal insulation system ) 是由 M·阿波南特 L·波西 于 2019-09-06 设计创作,主要内容包括:一种冷藏展示柜(100)包括:框架(1)、后壁(10)、前壁(11)、两个侧壁(12)、由框架(1)和壁限定的冷藏室(R),以冷却冷藏室(R)的方式配置的制冷系统、设置在冷藏室(R)中以支撑待展示商品的支撑装置(2)、和设置在冷藏展示柜的壁上的隔热板(3、4)。隔热板包括两个真空隔热板(VIP)类型的隔热板(4),它们分别设置在冷藏展示柜的后壁(10)上和前壁(11)上。(A refrigerated display case (100) comprising: the display cabinet comprises a frame (1), a rear wall (10), a front wall (11), two side walls (12), a refrigerating chamber (R) defined by the frame (1) and the walls, a refrigeration system configured in such a way as to cool the refrigerating chamber (R), a support device (2) arranged in the refrigerating chamber (R) to support the goods to be displayed, and insulating panels (3, 4) arranged on the walls of the refrigerated display cabinet. The insulation panels comprise two insulation panels (4) of the Vacuum Insulation Panel (VIP) type, which are arranged on the rear wall (10) and on the front wall (11) of the refrigerated display cabinet, respectively.)
1. Refrigerated display cabinet (100) comprising:
-a frame (1),
-a rear wall (1) adapted to face an operator,
-a front wall (1) adapted to face a consumer,
-two side walls (12);
-a refrigerating compartment (R) delimited by the frame (1) and the wall,
-a refrigeration system configured to cool the refrigerating compartment (R),
-support means (2) arranged in the refrigerating compartment (R) to support the goods to be displayed, and
-insulating panels (3, 4) provided on the wall of the refrigerated display cabinet,
wherein said insulation panels comprise two insulation panels (4) of the vacuum insulation panel VIP type, provided on the rear wall (10) and on the front wall (11) of the refrigerated display cabinet, respectively,
wherein a VIP-type insulating panel (4) is provided in recesses (13, 14) in the rear wall (10) and the front wall (11) and is protected by an outer protective layer (6);
wherein the outer protective layer (6) is connected to said frame (1) of the refrigerated display cabinet by means of a detachable coupling device (M); it is characterized in that the preparation method is characterized in that,
the outer protective layer (6) of the rear wall comprises:
-a flange (61) projecting in a lower position to engage with a base (7) arranged below the rear wall (10); and
-a rib (62) projecting in an upper position to engage with an upper portion (8) arranged above the rear wall (10); and is
The outer protective layer (6) of the front wall comprises:
-a flange (61) projecting in a lower position to engage with a base (70) arranged below the front wall (11); and
-a rib (62) projecting in an upper position to engage an upper portion (80) arranged above the front wall (11).
2. A refrigerated display cabinet (100) according to claim 1 characterized in that the insulating panel (4) of VIP type has a thickness comprised between 15mm and 25 mm.
3. A refrigerated display cabinet (100) according to claim 1 or 2 wherein each VIP-type insulating panel (4) is provided in a sandwich configuration between the soft inner layer (5) and the outer protective layer (6).
4. Refrigerated display cabinet (100) according to any of the preceding claims characterized in that each VIP-type thermal insulation panel (4) comprises an external membrane (40), the external membrane (40) creating an airtight enclosure that fills a core (41), the core (41) being made of fibrous or powdery material, wherein a vacuum is created, the pressure value of which is lower than 0.1 mbar.
5. A refrigerated display cabinet (100) according to claim 4 characterized in that the core (41) of the insulating panel (4) of the VIP type comprises an insulating material in the form of fibres such as glass wool or in the form of pores such as open cell polyurethane foam or in the form of powder such as silica powder.
6. Refrigerated display cabinet (100) according to claim 4 or 5 characterized in that each VIP-type thermal insulation panel (4) comprises an absorbing material (42) arranged inside the envelope of the panel to absorb gases in the presence of gases and to maintain a vacuum inside the envelope of the panel, the absorbing material (42) comprising a material with oxide and calcium salt bases or a zirconium-aluminium alloy St 101, a zirconium-vanadium-iron alloy St 707 and a zirconium-nickel alloy St 198.
7. Refrigerated display cabinet (100) according to any of claims 4 to 6, characterized in that the outer film (40) comprises a laminated multilayer film consisting of a polymer layer and at least one aluminum layer deposited thereon.
Technical Field
The present invention relates to a refrigerated display case having an improved insulation system.
Background
Refrigerated display cabinets are known on the market and are used for displaying ice cream contained in a tub and also for displaying pastry goods.
Such refrigerated display cases are provided with a refrigeration system adapted to refrigerate a refrigerated compartment containing the goods to be displayed.
The temperature of the refrigerating compartment must be maintained within a wide range, ranging from-20 ℃ to +20 ℃. In fact, ice cream must be stored at about-20 ℃, pastry items at about +4 ℃ and praline at about +20 ℃.
The refrigerating chamber is obtained by a heat-insulating plateOften consisting of a metal plate or a plastic wall, which defines a cavity in which approximately 40Kg/m is filled3The density of (a) is injected into the polyurethane foam.
Insulation panels of this type are affected by some drawbacks, since said panels do not guarantee good insulation. In view of the above, it is necessary to use a plate having a thickness of about 50 to 60 mm.
Therefore, the prior art refrigerated display cabinets have a large volume due to the high thickness of the panels. Such a drawback is experienced in particular in the case of small stores, where very little space is taken on the refrigerated display cabinets due to the small size and high rent of the store.
Vacuum panels, commonly defined as "vacuum insulation panels" (VIPs), are known on the market. These panels use the insulating power of the vacuum to increase the thermal resistance compared to conventional panels. A vacuum panel with a tight film is obtained which creates a filled chamber in which a vacuum is created.
Vacuum panels of this type are commonly used in the aerospace industry or in laboratory applications at low temperatures.
Vacuum panels have disadvantages because they are very fragile. In fact, if the film is perforated, the vacuum inside the panel is lost and the panel loses its insulating properties.
Thus, the vacuum panels are not used in refrigerated display cases. In fact, the refrigerated display cabinets are continuously handled by operators and users who may damage the vacuum panels and compromise the thermal insulation properties of the refrigeration compartment.
WO03083386 discloses a method of dispensing frozen food products by means of an insulated container.
Disclosure of Invention
The object of the present invention is to eliminate the drawbacks of the prior art by disclosing a refrigerated display cabinet with a thermal insulation system that is effective, efficient, reliable, versatile, not cumbersome and easy to install.
These objects are achieved according to the invention with the features of independent claim 1.
Advantageous embodiments of the invention emerge from the dependent claims.
The refrigerated display cabinet of the present invention is defined by claim 1.
The advantages of a refrigerated display case according to the present invention comprising Vacuum Insulation Panels (VIP) are apparent. In fact, the VIP guarantees a higher insulation and a lower thickness compared to traditional insulation panels, thus reducing the volume of the refrigerated display cabinet.
Drawings
Additional features of the invention will be apparent from the following detailed description, which is given by way of illustrative, non-limiting example only, and is illustrated in the accompanying drawings, in which:
fig. 1 is an exploded perspective view of a refrigerated display case according to the present invention.
FIG. 2 is a view of the refrigerated display case of FIG. 1 rotated 90;
figure 3 is an exploded side view of the refrigerated display case of figure 1.
FIG. 4 is the same view as FIG. 2, with the refrigerated display cabinet in an assembled state;
fig. 5 is a cross-sectional view taken along the vertical plane V-V of fig. 4.
Figure 6 is a schematic cross-sectional view of a vacuum panel of a refrigerated display case according to the present invention. And
fig. 7 is a schematic perspective view of a laminate film of the vacuum panel of fig. 6.
Detailed Description
Referring to the drawings, a refrigerated display case according to the present invention is disclosed and generally indicated by
The refrigerated
-a frame 1 having a frame shape with a plurality of frame shapes,
a front wall 1 adapted to face the consumer,
a
two
The front and
The
The frame 1 and the
The refrigerating chamber R is refrigerated by means of a refrigeration system of known type, which is omitted in the figures. The supporting
The
The
Referring to figure 6, the
The core 41 may comprise an insulating material in the form of fibers (glass wool), or in the form of a porous (open-cell polyurethane foam) or powder (silica powder).
An absorbent material 42, commonly referred to as a "getter", is disposed within the panel enclosure to absorb gases, if any, and maintain a vacuum within the panel enclosure.
The absorbing material 42 may include a material having an oxide and a calcium salt base or zirconium-aluminum alloy (St 101), zirconium-vanadium-iron alloy (St 707), and zirconium-nickel alloy (St 198).
The
The polymer layer may be Polyamide (PA), Polyethylene (PE), polyethylene terephthalate (PET) or other material that allows for a thermal welding operation after the evacuation process.
Aluminum may be deposited on the polymer layer by sputtering or vapor deposition (PVD). The aluminum layer serves to prevent water vapor.
Fig. 7 shows an example of an
a first layer 4a of heat-weldable polyethylene,
a second layer 4b of aluminium,
a
a
This type of
A vacuum is generated in the envelope of the insulating
The VIP
Two insulating
For illustrative purposes, the soft
For example, the outer
Each external
The outer
a
a
Referring to fig. 5, the frame 1 includes:
two
two
Coupling means M connecting the
Advantageously, the coupling means M are of the removable type. In view of the above, if the
For example, the connecting means M may be a screw means V or a fitting means.
Numerous equivalent variations and modifications can be made to the present embodiment of the invention, which are within the abilities of one of ordinary skill in the art and in any event fall within the scope of the invention as disclosed in the appended claims.
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