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WO2021090079A1 - Vitrine réfrigérée - Google Patents

Vitrine réfrigérée Download PDF

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Publication number
WO2021090079A1
WO2021090079A1 PCT/IB2020/056165 IB2020056165W WO2021090079A1 WO 2021090079 A1 WO2021090079 A1 WO 2021090079A1 IB 2020056165 W IB2020056165 W IB 2020056165W WO 2021090079 A1 WO2021090079 A1 WO 2021090079A1
Authority
WO
WIPO (PCT)
Prior art keywords
air duct
vertical
vertical air
shelves
confuser
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/IB2020/056165
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English (en)
Russian (ru)
Inventor
Юрий ХАРЧЕНКО
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to PCT/IB2020/056165 priority Critical patent/WO2021090079A1/fr
Publication of WO2021090079A1 publication Critical patent/WO2021090079A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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

Definitions

  • the invention relates to refrigerated display cases, on the shelves of the refrigerating chamber of which flows of chilled air are formed, interacting with the exposed food products located on the shelves.
  • N ° PCT / IB201 7/054074 containing a support block, above which there is at least one refrigeration chamber, in which the upper, middle and lower shelves are located along its height, which adjoin the rear wall of the refrigeration a chamber in which outlets are made for supplying cooled air to said upper, middle and lower shelves from the cooling section through a vertical air duct collector, while said cooling section is located under the refrigerating chamber in the upper part of the support block and contains inlets for removing cooled air from refrigerating chamber, evaporator and blower, and the compressor and condenser are located in the lower part of the support block.
  • the design feature of the known technical solution is that in the lower part of the support block there is a compressor and a condenser, and in the upper part of the support block there is a cooling section, in which two evaporators with two blower fans are located oppositely symmetrically to the inlet side of the vertical air manifold.
  • the cooling section is located in the upper part of the support block, while above the cooling section there is at least one refrigerating chamber, on the shelves of which cooled air from the cooling section is supplied. From the refrigerating chamber, cooled air enters the cooling section through its inlet openings.
  • the refrigerated display case circulates cooled air between the refrigerating section and the refrigerating chamber.
  • the inlet side of the vertical air duct manifold is brought out into the cooling section.
  • through holes are made in the inlet side of the vertical air duct collector to align the cooled air supply to the vertical air duct collector along the length of the refrigerating chamber.
  • the evaporators are located on opposite sides of the inlet side of the vertical airway manifold along the inlets of the cooling section. From the side of the inlet openings of the cooling section, blower fans are installed on the diffuser, directed towards the evaporators. The blower fans deliver cooled air from opposite sides to the inlet side of a vertical duct header, which is located between the opposed evaporators in the cooling section.
  • the opposed arrangement of the blower fans makes it necessary to synchronize their operation for uniform removal of cooled air from the evaporators to the vertical air duct collector; the need for an opposite location of the blower fans for each evaporator;
  • the opposed arrangement of the blower fans leads to a pressure loss (drop) in the vertical air duct collector and complicates the uniform removal of cooled air into the vertical air duct collector, and also reduces the delivery head; Also, the opposed arrangement of blower fans can lead to overflow "squeezing" of cooled air from one evaporator to the opposite one, which leads to leakage of cooled air through the inlet side of the vertical air duct collector, which leads to a decrease in the efficiency of the evaporators, an increase in the consumption of electrical energy.
  • the objective of the proposed invention is to increase and stabilize the pressure of the cooled air in the vertical air duct manifold. It is also an object of the proposed invention to increase the height of the cooled air supply in a vertical air duct manifold.
  • a known refrigerating display case containing a support block above which is located at least one refrigerating chamber, in which the upper, middle and lower shelves are located along its height, which adjoin the rear wall of the refrigerating chamber, in which the outlets are made for supplying cooled air to said upper, middle and lower shelves from the cooling section through a vertical air duct manifold
  • said cooling section is located under the refrigerating chamber in the upper part of the support block and contains inlets for withdrawing cooled air from the refrigerating chamber, an evaporator and a blower fan , and in the lower part of the support block there are a compressor and a condenser
  • in the cooling section there is a pressure chamber connected to the inlet of the vertical air duct collector, while the lower surface of the pressure chamber forms an air duct the gap between the bearing surface of the cooling section, also in the lower On the surface of the pressure chamber, an inlet is made, on which the pressure fan is installed coaxially
  • a pressure confuser is located in the pressure chamber, installed above the pressure fan and adjacent with its narrowing side to the inlet of the vertical air duct manifold.
  • a slotted confuser is installed in the vertical air duct collector at the level of the upper shelf adjoining the rear wall, while at the top of the tapered part of the slotted confuser, a slotted passage opening is made along the length of the slotted confuser.
  • a perforated confuser is installed in the vertical air duct at the level of the middle shelf abutting the rear wall of the refrigerating chamber.
  • the perforated confuser contains a tapered insert with through-holes, with the tapered insert facing upward in the direction of the cooled air in the vertical air duct manifold.
  • the blower fan is located coaxially opposite the inlet of the vertical duct manifold, which makes it possible to increase the pressure and height of the cooled air supply in the vertical duct manifold, as well as allows you to minimize aerodynamic drag between the inlet and the blower.
  • the blower fan produces uniform removal of cooled air from the evaporators through the air duct gap of the cooling section, which improves the efficiency of the evaporators and does not lead to a pressure loss caused by the counter movement of the cooled air flow from opposite evaporators.
  • the location in the plenum chamber of the plenum confuser located above the plenum fan and adjoining the tapering side of the plenum confuser to the inlet of the vertical duct manifold allows directing the entire flow of cooled air supplied by the plenum fan to the plenum chamber, and also increases the rate of cooled air supply to the vertical duct manifold ...
  • the use of a pressure confuser leads to equalization of pressure along the length of the refrigerating chamber, and also allows to increase the height of the cooled air supply along the vertical air duct collector, which is also an advantage of the proposed invention.
  • the location of the slotted confuser in the vertical air duct collector at the level of the upper shelves adjoining the rear wall and the execution of the slotted throughput along the length of the slotted confuser allows to stabilize the pressure in the vertical air duct collector under the upper shelves or in the middle part of the vertical air duct collector, which makes it possible to increase the efficiency of chilled air to the middle shelves of the refrigerating chamber from the vertical air duct.
  • the location of the slotted confuser coaxially with the vertical air duct collector, and the direction of the apex of the conical (tapering) part of the slotted confuser to the ceiling of the vertical air duct of the new collector allows for a preferential outlet from the middle of the middle part of the vertical air duct collector, while in the slotted passage opening the cooled air velocity increases, as a result, an aerodynamic seal is formed, which prevents the withdrawal of cooled air from the upper part of the vertical air duct to its middle part, which increases the efficiency of maintaining a stable pressure of the cooled air in the upper and middle parts of the vertical air duct, including along the length of the refrigeration cameras, which is also an advantage of the proposed invention.
  • the location of the perforated confuser at the level of the junction of the middle shelf to the rear wall of the refrigerating chamber allows to increase the pressure of the cooled air in the lower part of the vertical air duct collector, and also makes it possible to equalize the pressure and velocity of the cooled air after the perforated confuser along its course in the vertical air duct collector, which ensures efficient and uniform outlet of cooled air to the lower and middle shelves.
  • Fig. 1 is a general view of a refrigerated display case according to the proposed invention.
  • Fig. 2 is a cross-sectional view of a refrigerated display case according to the present invention.
  • FIG. 3 - fragment I of Fig. 2.
  • Fig. 4 - fragment II of Fig. 2.
  • Fig. 6 is a schematic front view of a refrigeration display case according to the proposed invention with a fragmentary cutout of the support block.
  • Fig.1-Fig.6 shows an example of the implementation of the refrigeration display, according to the proposed invention, which contains a support block 1, above which there are two symmetrically located refrigerating chambers 2 with upper 3i, middle Zr and lower ZZ shelves located along the height of refrigerating chambers 2 , see Fig. 1, Fig. 2.
  • the upper shelves 3i are located at the same level in the upper part of the refrigerating chambers 2 above the middle Zr and lower Zz shelves.
  • the middle shelves Zg are located at the same level in the middle part of the refrigerating chambers 2 between the upper 3i and lower Z3 shelves.
  • the lower shelves ⁇ are located at the same level under the middle ⁇ and upper 3i shelves.
  • the upper 3i, middle Zr and lower Zz shelves are adjacent along their length to the rear walls 2i of the refrigerating chambers 2.
  • the upper 3i and lower Zz shelves are made longer than the middle shelves Zr.
  • a baffle plate 3 4 is located along the top 3i shelves.
  • the through-hole ⁇ 5 is located in front of the baffle plate ⁇ 4 in the direction of movement of the cooled air on the upper shelf 3i from the rear wall 2i of the refrigerating chamber 2.
  • outlet openings 2d for supplying the cooled air to the upper 3i, middle ⁇ and lower ⁇ shelves from the cooling section 5 through the vertical air duct manifold 4.
  • the vertical air duct 4 is formed by two rear walls 2i of symmetrically positioned refrigerating chambers 2, see FIG. 2.
  • the cooling section 5 is located in the upper part of the support block 1 and contains two oppositely located evaporators 6 and a blower 7. In the lower part of the support block 1 under the cooling section 5 there is a compressor 8 with a condenser 9. Between the evaporators 6 there is an inlet opening 4i of the vertical air duct 4 In this case, the inlet 4i is located in the upper part of the cooling section 5, at the level of the abutment of the lower Z3 shelves to the rear walls 2i of the refrigerating chambers 2.
  • the cooling section 5 there is a pressure chamber 10 connected to the inlet 4i of the vertical air duct 4.
  • the lower surface 10i of the pressure chamber 10 forms an air duct gap 5g, see Fig. 4, between the bearing surface 5h of the cooling section 5 and the lower surface 10i of the pressure chamber 10
  • an inlet port South is formed on which the blower 7 is installed coaxially with the inlet opening 4i of the vertical air duct 4.
  • a slotted confuser 4g is installed at the level of the junction of the upper 3i shelves to the rear walls 2i of the refrigerating chambers 2.
  • the slotted confuser 4g of the vertical airway collector 4 contains partitions 4z, between which there are slotted through-holes 4 4 slotted confuser 4g, see Fig.Z.
  • holey 4s converger comprises a tapered insertion 4b in which the passage openings uniformly formed on the entire surface of the insertion cone 4b perforated converger 4s.
  • the top of the conical insert 4 b of the perforated confuser 4s faces upward in the direction of movement of the cooled air in the vertical air duct 4, see Fig. 2.
  • bypass flap W b is set to 3s feedthrough while moving the cooled air over the upper shelf 3i, whereby the through-hole H is disposed between the reflective 5 W 4 and W b bypass flaps.
  • Through-holes ⁇ 5 are necessary to form a curtain of cooled air in front of the middle Zr shelves and direct the flow of cooled air to the lower ZZ shelves of refrigerating chambers 2.
  • the cooling section 5 is thermally insulated from the lower part of the support block 1, in which the compressor 8 and the condenser 9 are located, in order to eliminate heat exchange between the cooling section 5 and the lower part of the support block 1.
  • the lower Z3 shelves cover the top of the cooling section 5, which contains inlets 5i for withdrawing cooled air from the refrigerating chambers 2 to the cooling section 5.
  • Reflector 1i is located at the top of the support block 1 and is intended for directing the cooled air from the refrigerating chamber 2 during the intake openings 5i cooling section 5.
  • the inlets 5i 1i are arranged between the reflector and the bypass flap H b PO lower shelves.
  • Reflectors 1i are located along the entire length of the lower ⁇ shelves after the inlet openings 5i in the direction of the cooled air along the lower ⁇ shelves from the rear walls 2i through the outlet openings 2d from the vertical air duct 4.
  • evaporators 6 are located along the inlet openings 5i. Also, in the cooling section 5, the injection chamber 10 is attached to the lower Z3 shelves and evaporators 6, see Fig. 4 , which are located on the bearing surface 5z of the cooling section 5. The evaporators 6 are located opposite each other and between the evaporators 6 there is an injection chamber 10, the lower surface 10i of which forms an air gap 5g between the bearing surface 5g of the cooling section 5.
  • Refrigerating chambers 2 are bounded on the sides by side walls 2z, see Fig. 1, on which a reflective shield 3 4 is movably fixed, thereby forming a door opposite the upper 3i shelves
  • the side walls 2z delimit the vertical air duct 4 at the sides.
  • the discharge chamber 10 there is a discharge confuser Yuz of the discharge chamber 10 above the discharge fan 7 and adjoining the tapering side to the inlet 4i of the vertical air duct 4.
  • the Yuz discharge confuser is fixed by its expanding side on the surface of the injection chamber 10, and by its tapering side it is fixed on the lower Z3 shelves and on the inner surface of the inlet 4i of the vertical air duct 4, see Fig. 4.
  • the operation of the refrigerated display case Fig. 1-Fig. 6, according to the proposed invention, consists in the fact that the refrigerant circulates in a closed loop from the compressor 8 through the condenser 9 to the evaporators 6 and back. Compressor 8 compresses the refrigerant, thereby increasing the pressure. In the condenser 9, a phase transition of the refrigerant into a liquid state occurs, and in the evaporators 6 the refrigerant evaporates, as a result of which heat is taken (removed) from the cooled air supplied to the cooling section 5 through the inlets 5i from the refrigerating chambers 2.
  • the South inlet is located at an equal distance from the evaporators 6, as a result of which the same aerodynamic resistance and uniform removal of cooled air from the evaporators 6 through the air duct gap 5i into the plenum chamber 10 through the inlet South, which also improves the operation of the evaporators 6 and does not lead to overflows of cooled air from one evaporator 6 to the opposite evaporator 6, which is also an advantage of proposing new invention.
  • cooled air enters the Yuz discharge confuser, which tapers towards the inlet 4i of the vertical air duct 4, see FIG. 4.
  • the blower fan 7 is installed coaxially with the inlet 4i and the pressure confuser Yuz of the blower chamber 10, which makes it possible to reduce losses when supplying cooled air to vertical air duct collector 4, which leads to an increase in the height of the cooled air supply to the upper 3i shelves of refrigerating chambers 2.
  • the cooled air rises up the vertical air duct 4 and interacts with the perforated confuser 4s, as a result of which there is an equalization of the pressure and velocities of the cooled air in the middle part of the vertical air duct 4, including along its length, which also contributes to an increase in the efficiency of the removal of cooled air to the lower Zz shelves through the outlet openings 2d the rear walls 2i of the refrigerating chambers 2.
  • the cooled air After the perforated confuser 4s, the cooled air enters up the vertical air duct collector 4 and interacts with the slotted confuser 4d, in which the cooled air passes through the slotted passages 4 4.
  • the arrangement of the slotted passages 4 4 coaxially with the vertical airway collector 4 leads to the fact that the cooled air predominantly comes from the middle of the cooled air flow in the vertical air duct 4, while at the periphery of the cooled air flow in the middle of the vertical air duct 4 there is an increase and stabilization of pressure, which leads to an increase in the efficiency and uniformity of cooled air removal to medium Zr shelves, which is also an advantage of the proposed invention.
  • the cooled air is coaxially supplied to the upper part of the vertical airway collector 4.
  • a ceiling 47 At the top of the vertical airway collector 4 there is a ceiling 47, about which the cooled air flow is reflected in the upper part of the vertical airway collector 4.
  • the cooled air enters the outlets 2g of the rear walls 2i, from which the cooled air enters the upper 3i shelves.
  • the cooled air cannot enter its middle part, since an aerodynamic support is formed in the slotted through-holes 4 4 , which prevents the passage of cooled air from the upper to the middle part of the vertical air duct 4, which leads to pressure stabilization at the top of the air duct manifold to efficiently and evenly discharge the cooled air to the top 3i shelves.
  • cooled air through the outlets 2d enters the upper 3i, middle ⁇ and lower ⁇ shelves, on which a flow of cooled air is formed, which moves from the rear walls 2i of the refrigerating chambers 2.
  • the cooled air is retained by the reflective plate ⁇ 4 and enters the through-holes Z 5 and as a result of which a curtain of cooled air is formed in front of the middle Zr shelves.
  • the middle shelf Sr cooled air stream which is discharged from the rear wall 2i flows through the bypass flap W B and discharged to the lower shelf PO.
  • Overflow upper flap W B 3i, Sr middle and lower shelves PO is used to form the chilled air stream height.
  • cooled air is discharged into the inlet openings 5i of the cooling section 5 and enters the evaporators 6, where heat is removed with the subsequent removal of cooled air into the discharge chamber 10 through the air duct gap 5d.
  • the reflector 1i prevents the dispersion (flow) of cooled air from the lower ZZ shelves.
  • temperature sensors determine the temperature value on the upper 3i, middle ⁇ , lower ⁇ shelves of refrigerating chambers 2.
  • the rotation speed of the blower 7 changes, which ensures fast regulation of the flow of cooled air to maintain the set temperature value.
  • 6 shows the location of the blower fans 7, the air gap 5g, and the inlet 4i along the length of the refrigerating chambers 2.
  • the proposed invention is not limited to the above example of its implementation. This description provides information that is necessary and sufficient for a clear understanding of the essence of the proposed invention. Information that is obvious to specialists in this field of technology and which did not contribute to a better understanding of the essence of the proposed invention were not given in this description.
  • the technical result of the proposed invention is to stabilize the pressure in the vertical air duct collector along the entire height and length of the refrigerating chamber, while reducing the aerodynamic resistance between the inlet of the vertical air duct manifold and the blower fan.

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  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)

Abstract

L'invention concerne des vitrines réfrigérées dans laquelle on génère, sur les étagères de sa chambre froide, des flux d'air refroidi interagissant avec les produits alimentaires exposés et disposés sur les étagères. La vitrine selon la présente invention comprend essentiellement une section de réfrigération (5) comportant une chambre de pompage (10) connectée à une ouverture d'admission (41) d'un collecteur à conduit d'air vertical (4); la surface inférieure (101) de la chambre de pompage (10) définit un jour de passage d'air (52) entre la surface porteuse (53) de la section de réfrigération (5); la surface inférieure (101) de la chambre de pompage (10) comprend en outre une ouverture d'admission (102) sur laquelle est installé un ventilateur de pompage (7) coaxialement à l'ouverture d'admission (41) du collecteur à conduit d'air vertical (4). Le résultat technique de la présente invention consiste en une stabilisation de la pression dans le collecteur à conduit d'air vertical sur toute la hauteur et toute la longueur de la chambre froide, tout en réduisant la résistance aérodynamique entre l'ouverture d'entrée du collecteur à conduit d'air vertical et le ventilateur de pompage.
PCT/IB2020/056165 2020-06-30 2020-06-30 Vitrine réfrigérée Ceased WO2021090079A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/IB2020/056165 WO2021090079A1 (fr) 2020-06-30 2020-06-30 Vitrine réfrigérée

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IB2020/056165 WO2021090079A1 (fr) 2020-06-30 2020-06-30 Vitrine réfrigérée

Publications (1)

Publication Number Publication Date
WO2021090079A1 true WO2021090079A1 (fr) 2021-05-14

Family

ID=75849798

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2020/056165 Ceased WO2021090079A1 (fr) 2020-06-30 2020-06-30 Vitrine réfrigérée

Country Status (1)

Country Link
WO (1) WO2021090079A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1025627A (en) * 1962-10-24 1966-04-14 Martin Gabler Improvements in and relating to refrigerated display cabinets
WO1997003593A1 (fr) * 1995-07-18 1997-02-06 Aktiebolaget Electrolux Comptoir refrigerant pour bouteilles, boites et recipients similaires
WO1997033505A1 (fr) * 1996-03-15 1997-09-18 Floeysvik Jan Egil Armoire de refrigeration
US5689967A (en) * 1994-02-14 1997-11-25 Aktiebolaget Electrolux Bottle cooler

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1025627A (en) * 1962-10-24 1966-04-14 Martin Gabler Improvements in and relating to refrigerated display cabinets
US5689967A (en) * 1994-02-14 1997-11-25 Aktiebolaget Electrolux Bottle cooler
WO1997003593A1 (fr) * 1995-07-18 1997-02-06 Aktiebolaget Electrolux Comptoir refrigerant pour bouteilles, boites et recipients similaires
WO1997033505A1 (fr) * 1996-03-15 1997-09-18 Floeysvik Jan Egil Armoire de refrigeration

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