WO2011074993A1 - A set of refrigerated display cases - Google Patents
A set of refrigerated display cases Download PDFInfo
- Publication number
- WO2011074993A1 WO2011074993A1 PCT/PL2009/000107 PL2009000107W WO2011074993A1 WO 2011074993 A1 WO2011074993 A1 WO 2011074993A1 PL 2009000107 W PL2009000107 W PL 2009000107W WO 2011074993 A1 WO2011074993 A1 WO 2011074993A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- display
- air
- air channel
- warmer
- warmer air
- Prior art date
Links
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47F—SPECIAL FURNITURE, FITTINGS, OR ACCESSORIES FOR SHOPS, STOREHOUSES, BARS, RESTAURANTS OR THE LIKE; PAYING COUNTERS
- A47F3/00—Show cases or show cabinets
- A47F3/04—Show cases or show cabinets air-conditioned, refrigerated
- A47F3/0439—Cases or cabinets of the open type
- A47F3/0443—Cases or cabinets of the open type with forced air circulation
- A47F3/0447—Cases or cabinets of the open type with forced air circulation with air curtains
Definitions
- the utility model comprises a set of refrigerated display cases, particularly vertical ones.
- Refrigerated display cases are usually used in commercial establishments for food storage and presentation purposes in temperatures lower than the ambient temperature.
- Such display cases consist of a display chamber with thermally isolated walls and an open front and separated from the surroundings by an curtain of air cooled to a temperature below the temperature of the surroundings.
- a refrigerated display case is known, with the display chamber surrounded by walls made of internal and external layers, with isolation between them.
- the bottom part of the display case comprises a ventilation set and an evaporator, from which along the back and the upper walls a channel runs with an outlet located outside the display chamber and directed downwards.
- the air, pushed by a fan and cooled in the evaporator is exhausted through an upper outlet, and flowing down along the display chamber creates an air curtain that separates the chamber from the surroundings, thus allowing to keep the temperature in the chamber lower than the ambient temperature.
- a vertical display case is included, the shape of which is inscribed in a cuboid.
- a chamber with a cover in the front in the form of a louver wall.
- a fan is mounted that sucks in the air from the outside.
- Behind the fan there is a heat exchanger that cools down the air that was suck in.
- the chamber has an outlet to a channel that runs within the back wall of the display case and has holes on different levels. The holes let the air inside the display chamber. Next, the channel goes within the upper wall of the display chamber to outlets directed downwards.
- the upper wall of the display case has an inlet for the surrounding air, wherefrom a channel runs to the downward outlet. Behind the outlet, a fan is mounted that sucks the air in and pushes it into the outlet, wherefrom it flows downwards as an external stream of the air curtain.
- the solution according to the utility model consists in a set consisting of two identical display cases combined together with their back walls, having their side walls slightly extended in respect to the surface of back walls.
- the side walls are connected with their back edges, thus creating between the side and back walls a common vertical middle part of the warmer air channel. This part of the channel is connected at the top with end parts of the channef, in which at least one fan is mounted.
- valves are mounted that shut- off the inflow of warmer air.
- At least one fan is mounted in every end part of the channel.
- a removable cover is mounted that closes from above the middle part of warmer air channel.
- the cover covers the open upper ports of inlets of end parts of the channel, with fans mounted therein.
- the inlet of the air cooling chamber there is an air filter, or in the inlet of the beginning part of the warmer air channel, there is an air filter mounted.
- the advantage of the presented solution is that it enables to recover cold air released to the surroundings from the internal flow of cooler air, and next to introduce it to the external flow of warmer air.
- a side effect of sealing the closed flow of cooler air is removing the reason for lowering the ambient temperature, which decreases the energy consumption for heating the room.
- the advantage of the construction is mounting, in the inlets of end parts of warmer air channel, the valves that shut-off the inflow of warmer air. Thanks to such solution, one display case can work when the other one is turned off or damaged.
- an air filter in the inlet of the air cooling chamber there is an air filter, or in the inlet of the beginning part of the warmer air channel, there is an air filter mounted.
- fig.l is a schematic front view of the refrigerated display case
- fig.2 presents the axonometric view of the set of refrigerated display cases
- fig. 3 is a simplified vertical cross-section of the set of refrigerated display cases presented on fig.l.
- the set consists of two identical display cases 1, with identical construction and consisting of the same elements, the description of only one display case 1 has been presented, adjustable to the set of two display cases 1, if necessary.
- a typical refrigerated display case 1 has a shape inscribed in a cuboid, the five walls 2 of which constitute a thermally isolated casing.
- the biggest and the most visually exposed element of the display case 1 is the display chamber 3, open at the front ⁇ . and having food shelves 4 mounted inside.
- the display chamber 3 is separated, isolated from the surroundings with air curtain A, created by the internal flow of cooler air B and external flow of warmer air C.
- the channel 9 consists of a vertical part 9a running between the back wall 3b of the display chamber 3 and the back wall 2b of the display case 1. In the back wall 3b there are outlets 10, through which cooler air is pushed from the vertical part 9a to the display chamber 3. At the top of the display case 1, the vertical part 9a becomes an end part 9b, running between the upper wall 3c of the display chamber 3 and the upper wall 2c of the display case 1.
- the channel of the cooler air 9 is terminated with a downward outlet 11 of cooler air, located at the end of the end part 9b.
- the floor serves as the bottom.
- the places, where the floor is connected with the side walls 2 of the display case are sealed with a flexible seal.
- the back edges of side walls 3 of both display cases 1 are also sealed together.
- a warmer air fan 15 is mounted that sucks in the air through the inlet 13 and pushes it through the channel 12 to a downward outlet 14 located at the end part 12c outside the outlet 11 of the cooler air channel 9.
- shut-off valves are mounted that shut these parts 12c off * the middle part 12b of warmer air channel 12.
- the shut-off valve 16 is open during regular operation of the display case 1. If one display case 1 is turned off for any reasons, and the other display case 1 is in operation, the shut-off valve 16 is closed; in order to prevent the loss of warmer air.
- an opening cover 17 is mounted that closes the middle part 12b of the warmer air channel 12 and that protects from above the warmer air fans 15 mounted in the inlets of end parts 12c of warmer air channel 12.
- a removable air filter is mounted, and in the inlet 13 of the front part 12a of the warmer air channel 12, a removable air filter is mounted.
Abstract
A set consisting of two identical display cases (1) having side walls (2d) slightly extended in respect to the surface of back walls (2b). The display cases are combined together with back walls, having their side walls (2d) connected, thus creating between the side (2d) and back walls (2b) a common vertical middle part (12b) of the warmer air channel (12). This part (12b) is connected at the top with end parts (12c), the warmer air channel (12) having at least one fan (15)
Description
A set of refrigerated display cases
The utility model comprises a set of refrigerated display cases, particularly vertical ones.
Refrigerated display cases are usually used in commercial establishments for food storage and presentation purposes in temperatures lower than the ambient temperature. Such display cases consist of a display chamber with thermally isolated walls and an open front and separated from the surroundings by an curtain of air cooled to a temperature below the temperature of the surroundings.
From description of a utility model no. 61115 a refrigerated display case is known, with the display chamber surrounded by walls made of internal and external layers, with isolation between them. The bottom part of the display case comprises a ventilation set and an evaporator, from which along the back and the upper walls a channel runs with an outlet located outside the display chamber and directed downwards. The air, pushed by a fan and cooled in the evaporator is exhausted through an upper outlet, and flowing down along the display chamber creates an air curtain that separates the chamber from the surroundings, thus allowing to keep the temperature in the chamber lower than the ambient temperature.
In the description of claim in Poland no. 367690 (PCT/FR02/o2814), a vertical display case is included, the shape of which is inscribed in a cuboid. In the lower part of the display case there is a chamber with a cover in the front in the form of a louver wall. In the chamber behind the cover, a fan is mounted that sucks in the air from the outside. Behind the fan there is a heat exchanger that cools down the air that was suck in. The chamber has an outlet to a channel that runs within the back wall of the display case and has holes on different levels. The holes let the air inside
the display chamber. Next, the channel goes within the upper wall of the display chamber to outlets directed downwards.
The upper wall of the display case has an inlet for the surrounding air, wherefrom a channel runs to the downward outlet. Behind the outlet, a fan is mounted that sucks the air in and pushes it into the outlet, wherefrom it flows downwards as an external stream of the air curtain.
The solution according to the utility model consists in a set consisting of two identical display cases combined together with their back walls, having their side walls slightly extended in respect to the surface of back walls. The side walls are connected with their back edges, thus creating between the side and back walls a common vertical middle part of the warmer air channel. This part of the channel is connected at the top with end parts of the channef, in which at least one fan is mounted.
Preferably, in the inlets of end parts of the channel, valves are mounted that shut- off the inflow of warmer air.
In a preferred embodiment, in every end part of the channel, at least one fan is mounted.
Where upper walls of display cases are connected, in a preferred embodiment a removable cover is mounted that closes from above the middle part of warmer air channel.
Preferably, the cover covers the open upper ports of inlets of end parts of the channel, with fans mounted therein.
Preferably, in the inlet of the air cooling chamber there is an air filter, or in the inlet of the beginning part of the warmer air channel, there is an air filter mounted.
The advantage of the presented solution is that it enables to recover cold air released to the surroundings from the internal flow of cooler air, and next to introduce it to the external flow of warmer air.
As an effect of lowering the temperature of the external stream, heat exchange between the flows decreases, and thus less energy is consumed for purposes of cooling the air introduced to the internal stream. The tests conducted proved that energy consumption decreased by a few percent as a result of this.
A side effect of sealing the closed flow of cooler air is removing the reason for lowering the ambient temperature, which decreases the energy consumption for heating the room.
The crucial advantage results from the fact, that a minor extension of side walls of display cases creates, after the display cases are combined, a middle, vertical part of the warmer air channel. This eliminates the necessity to create such parts separately for both display cases.
The advantage of the construction is mounting, in the inlets of end parts of warmer air channel, the valves that shut-off the inflow of warmer air. Thanks to such solution, one display case can work when the other one is turned off or damaged.
Preferably, in the inlet of the air cooling chamber there is an air filter, or in the inlet of the beginning part of the warmer air channel, there is an air filter mounted.
The subject of the solution according to the utility model is presented in the drawings, where fig.l is a schematic front view of the refrigerated display case, fig.2
presents the axonometric view of the set of refrigerated display cases, and fig. 3 is a simplified vertical cross-section of the set of refrigerated display cases presented on fig.l.
Because the set consists of two identical display cases 1, with identical construction and consisting of the same elements, the description of only one display case 1 has been presented, adjustable to the set of two display cases 1, if necessary.
A typical refrigerated display case 1 has a shape inscribed in a cuboid, the five walls 2 of which constitute a thermally isolated casing. The biggest and the most visually exposed element of the display case 1 is the display chamber 3, open at the front ·. and having food shelves 4 mounted inside. The display chamber 3 is separated, isolated from the surroundings with air curtain A, created by the internal flow of cooler air B and external flow of warmer air C. Between the bottom wall 3a of the display chamber 3 and the bottom wall 2a of the display case 1, there is a cooling chamber 5 having in its front part a louver inlet 6 of the cooler air and the;; surrounding air.
In the cooling chamber 5 behind the inlet 6 there is a fan 7 that sucks in the air from the internal flow of cooler air B and, to complement its losses, from the external flow of warmer air C. The fan 7 pushes the air to the heat exchanger 8, where it is cooled to the desired temperature and directed to the channel 9 of cooler air. The channel 9 consists of a vertical part 9a running between the back wall 3b of the display chamber 3 and the back wall 2b of the display case 1. In the back wall 3b there are outlets 10, through which cooler air is pushed from the vertical part 9a to the display chamber 3. At the top of the display case 1, the vertical part 9a becomes an end part 9b, running between the upper wall 3c of the display chamber 3 and the upper wall 2c of the display case 1. The channel of the cooler air 9 is terminated with a downward outlet 11 of cooler air, located at the end of the end part 9b.
Below the bottom wall 2a of the display case 1, at the front, there is an inlet 13 of the warmer air channel 12 that consists of the horizontal front part 12a, vertical middle part 12b and a horizontal end part 12c. In the front part 12a, the floor serves as the bottom. The places, where the floor is connected with the side walls 2 of the display case are sealed with a flexible seal. The back edges of side walls 3 of both display cases 1 are also sealed together. In every end part 12c, a warmer air fan 15 is mounted that sucks in the air through the inlet 13 and pushes it through the channel 12 to a downward outlet 14 located at the end part 12c outside the outlet 11 of the cooler air channel 9.
In inlets of end parts 12c, shut-off valves are mounted that shut these parts 12c off * the middle part 12b of warmer air channel 12. The shut-off valve 16 is open during regular operation of the display case 1. If one display case 1 is turned off for any reasons, and the other display case 1 is in operation, the shut-off valve 16 is closed; in order to prevent the loss of warmer air.
On upper walls 2c of display cases 1, where the cases 1 are combined, an opening cover 17 is mounted that closes the middle part 12b of the warmer air channel 12 and that protects from above the warmer air fans 15 mounted in the inlets of end parts 12c of warmer air channel 12. Thus, access to fans 15 is easy in order to assemble, disassemble or repair them.
In order to prevent air losses in the warmer air, the contact edges of bottom and side walls 2 of the display case 1 and the cover 17, are sealed.
In the inlet 6 of the air cooling chamber 5, a removable air filter is mounted, and in the inlet 13 of the front part 12a of the warmer air channel 12, a removable air filter is mounted.
Claims
1. A set of display cases, each having a display chamber open in the front, a cooler air flow system and a warmer air floe system with a channel with at least one fan mounted therein, having at the end a downward outlet of warmer air characterised by that it consists of two identical display cases (1) combined together with their back walls, having their side walls (2d) and connected with back edges of side walls (2d), thus creating between the side (2d) and back walls (2b) a common vertical middle part (12b) of the warmer air channel (12) that is connected at the top with end parts (12c) of the warmer air channel (12), in which at least one fan (15) is mounted.
2. A set of display cases according to claim 1 characterised by that in inlets of end parts (12c), shut-off valves (16) are mounted that shut the inflow of warmer air off.
3. A set of display cases according to claim 1 characterised by that in each end part (12c), at least one fan is mounted (15).
4. A set of display cases according to claim 1 characterised by that 1, where the upper walls (2c) of display cases (1) are combined, an removable cover (17) is mounted that closes from above and seals the middle part (12b) of the warmer air channel (12).
5. A set of display cases according to claim 1 characterised by that the cover (17) that covers the inlets of end parts (12c) with fans mounted therein (15).
6. A set of display cases according to claim 1 characterised by that in the inlet (6) of air cooling chamber (5), a removable air filter is mounted.
7.A set of display cases according to claim 1 characterised by that in the inlet (13) of front part (12a) of warmer air channel (12), a removable air filter is mounted.
Legend
Refrigerated display case -1
Wall of the refrigerated display case -2
Bottom wall of the display case -2a
Back wall of the display case -2b
Upper wall of the display case -2c
Side wall of the display case -2d
Display chamber -3
Bottom wall of the display chamber -3a
Back wall of the display chamber -3b
Upper wall of the display chamber -3c
Shelf of the display chamber -4
Cooling chamber -5
Inlet of the air cooling chamber 6
Cooler air fan -7
Heat exchanger -8
Cooler air channel -9
Cooler air channel - vertical part -9a
Cooler air channel - end part (horizontal) -9b
Cooler air outlet to the display chamber -10
Cooler air channel outlet -11
Warmer air channel -12
Warmer air channel - front part (horizontal) -12a
Warmer air channel - middle part (vertical) -12b
Warmer air channel - end part (horizontal) -12c
Warmer air channel inlet -13
Warmer air channel outlet -14
Warmer air fan -15 Shut-off valve Cover
Air curtain Cooler air flow Warmer air flow
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL11867409 | 2009-12-17 | ||
| PLW-118674 | 2009-12-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2011074993A1 true WO2011074993A1 (en) | 2011-06-23 |
Family
ID=44246843
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/PL2009/000107 WO2011074993A1 (en) | 2009-12-17 | 2009-12-17 | A set of refrigerated display cases |
Country Status (1)
| Country | Link |
|---|---|
| WO (1) | WO2011074993A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202014100664U1 (en) | 2014-02-14 | 2014-02-24 | Aht Cooling Systems Gmbh | refrigerated |
| DE202014100662U1 (en) | 2014-02-14 | 2014-02-24 | Aht Cooling Systems Gmbh | refrigerated |
| WO2014029613A1 (en) * | 2012-08-22 | 2014-02-27 | Aht Cooling Systems Gmbh | Cooling device |
| US9560921B2 (en) | 2012-08-22 | 2017-02-07 | Aht Cooling Systems Gmbh | Cooling unit arrangement |
| US9901190B2 (en) | 2012-08-22 | 2018-02-27 | Aht Cooling Systems Gmbh | Cooling unit |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4373355A (en) * | 1981-04-20 | 1983-02-15 | Displaymor Manufacturing Company, Inc. | Dual refrigerated display cabinet |
| EP0158297A2 (en) * | 1984-04-13 | 1985-10-16 | Linde Aktiengesellschaft | Refrigerated display shelf |
| EP0403459A1 (en) * | 1989-06-12 | 1990-12-19 | Aktiebolaget Electrolux | Refrigerated display cabinet |
| PL367690A1 (en) | 2001-08-06 | 2005-03-07 | Bonnet Neve | Refrigerated display case, in particular vertical display case, with front refrigerated air curtain |
| EP1743552A1 (en) * | 2005-07-12 | 2007-01-17 | Hussmann Corporation | Ambient air curtain with floor air inlet |
-
2009
- 2009-12-17 WO PCT/PL2009/000107 patent/WO2011074993A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4373355A (en) * | 1981-04-20 | 1983-02-15 | Displaymor Manufacturing Company, Inc. | Dual refrigerated display cabinet |
| EP0158297A2 (en) * | 1984-04-13 | 1985-10-16 | Linde Aktiengesellschaft | Refrigerated display shelf |
| EP0403459A1 (en) * | 1989-06-12 | 1990-12-19 | Aktiebolaget Electrolux | Refrigerated display cabinet |
| PL367690A1 (en) | 2001-08-06 | 2005-03-07 | Bonnet Neve | Refrigerated display case, in particular vertical display case, with front refrigerated air curtain |
| EP1743552A1 (en) * | 2005-07-12 | 2007-01-17 | Hussmann Corporation | Ambient air curtain with floor air inlet |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014029613A1 (en) * | 2012-08-22 | 2014-02-27 | Aht Cooling Systems Gmbh | Cooling device |
| CN104540422A (en) * | 2012-08-22 | 2015-04-22 | 奥特冷机系统有限公司 | Cooling device |
| US9560921B2 (en) | 2012-08-22 | 2017-02-07 | Aht Cooling Systems Gmbh | Cooling unit arrangement |
| DE102012107713B4 (en) * | 2012-08-22 | 2018-02-15 | Aht Cooling Systems Gmbh | refrigerated |
| US9901190B2 (en) | 2012-08-22 | 2018-02-27 | Aht Cooling Systems Gmbh | Cooling unit |
| US9930974B2 (en) | 2012-08-22 | 2018-04-03 | Aht Cooling Systems Gmbh | Cooling device |
| DE202014100664U1 (en) | 2014-02-14 | 2014-02-24 | Aht Cooling Systems Gmbh | refrigerated |
| DE202014100662U1 (en) | 2014-02-14 | 2014-02-24 | Aht Cooling Systems Gmbh | refrigerated |
| US10420426B2 (en) | 2014-02-14 | 2019-09-24 | Aht Cooling Systems Gmbh | Refrigerated display case |
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