DK181588B1 - Freezer plate, and method for modifying a freezer plate - Google Patents
Freezer plate, and method for modifying a freezer plate Download PDFInfo
- Publication number
- DK181588B1 DK181588B1 DKPA202070409A DKPA202070409A DK181588B1 DK 181588 B1 DK181588 B1 DK 181588B1 DK PA202070409 A DKPA202070409 A DK PA202070409A DK PA202070409 A DKPA202070409 A DK PA202070409A DK 181588 B1 DK181588 B1 DK 181588B1
- Authority
- DK
- Denmark
- Prior art keywords
- freezing
- plate
- side line
- freezer
- side conduit
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 9
- 239000012595 freezing medium Substances 0.000 claims abstract description 66
- 238000007710 freezing Methods 0.000 claims abstract description 51
- 230000008014 freezing Effects 0.000 claims abstract description 51
- 238000004891 communication Methods 0.000 claims abstract description 41
- 230000006854 communication Effects 0.000 claims abstract description 41
- 230000000295 complement effect Effects 0.000 claims description 2
- 239000003507 refrigerant Substances 0.000 claims 1
- 230000004048 modification Effects 0.000 abstract description 7
- 238000012986 modification Methods 0.000 abstract description 7
- 239000002609 medium Substances 0.000 description 11
- 239000007788 liquid Substances 0.000 description 8
- 239000000463 material Substances 0.000 description 6
- 238000001816 cooling Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 235000013372 meat Nutrition 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920000136 polysorbate Polymers 0.000 description 1
- 244000144977 poultry Species 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D31/00—Other cooling or freezing apparatus
- F25D31/001—Plate freezers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B39/00—Evaporators; Condensers
- F25B39/02—Evaporators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/02—Header boxes; End plates
- F28F9/026—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits
- F28F9/028—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits by using inserts for modifying the pattern of flow inside the header box, e.g. by using flow restrictors or permeable bodies or blocks with channels
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
- F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
- F28D1/03—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with plate-like or laminated conduits
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
- F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
- F28D2021/0042—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for foodstuffs
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
Modification of a freezer plate where said freezer plate has an inlet and an outlet for letting a freezing medium into and out of the interior of said freezing plate, where the freezing plate has two parallel side conduits, and where a plurality of freezer plate sections is arranged orthogonal to and in between said side conduits, and where a primary freezing medium communication port is provided in each end of said freezer plate section, creating freezing medium communication between each freezer plate section and each side conduit, characterized in that a secondary side conduit is insert-ed inside the side conduit, where said secondary side conduit is provided with secondary freezing medium communicating ports overlapping the primary freezing medium communication ports.
Description
DK 181588 B1 1
Freezer plate, and method for modifying a freezerplate.
The present invention relates to a freezer plate as well as a method for modifying a freezer plate.
The type of freezer plates which the present invention is directed to is typically used in industrial-type vertical or horizontal plate freezers. The invention provides a modi- fication to the kind of freezer plate where a cooling/cryonic medium is circulated in- side the freezing plate and where the freezing plates are arranged either horizontally or vertically in industrial freezer installations.
Products to be frozen which may typically be foodstuffs such as fish, poultry, other meats, vegetables etc. are arranged between adjacent freezing plates and by bringing the product to be frozen into thermal contact with the freezing plates and circulating a cooling medium/cryonic medium in the freezing plates it is possible to freeze the products.
These types of freezers, both vertical and horizontal plate freezers, find widespread use on an industrial basis.
The freezer plates are typically manufactured by providing two side conduits substan- tially parallel to each other where a freezing medium is led into the first side conduit.
The side conduits are furthermore interconnected by freezing pipes, typically having a square or rectangular cross-section such that when they are arranged in a freezing plate they together constitute a substantially flat surface. The freezing pipes or freez- ing plate sections are in communication with the side conduits such that it is possible to circulate freezing media led into the side conduits through the freezing plates and led out through the other side conduit. In this manner it is possible to create a large freezing surface which when brought into contact with the products to be frozen pro- vides a very effective freezing process.
DK 181588 B1 2
In some instances it is desirable to be able to change the freezing media which is cir- culated in the freezer plate. However, this may cause problems in that various freezing media have various thermal conducting properties and as such usually the freezer plates, i.e. the side conduits and the freezer sections are dimensioned such that they will provide the optimal freezing properties for the determined freezing medium.
When the freezing medium changes, naturally the freezer plates are not optimal any- more, in that the different characteristics of the flow properties inside the freezing plates, i.e. the cross-sections of the side conduits and the freezer plate sections as well as the communication ports allowing flow from the side conduits to the freezer plate sections, may be dimensioned incorrectly. Furthermore the cooling plant supplying cooling media/cryonic media to the freezer plates are typically dimensioned for a cer- tain type of freezing plates. When the freezing medium/cryonic medium is changed the pressure, flow or other parameters may not be optimum with respect to the freez- ing plates and the overall freezing cycle.
In US 2002/0195234A1 is described a freezer plate where said freezer plate has an inlet and an outlet for letting a freezing medium into and out of the interior of said freezing plate, where the freezing plate has two parallel side conduits, and where a plurality of freezer plate sections are arranged orthogonal to and in between said side conduits, and where a primary freezing medium communication port is provided in each end of said freezer plate sections, creating freezing medium communication be- tween each freezer plate section and each side conduit.
Object of the Invention
The invention therefore is directed to providing a solution to this problem, so that ex- isting freezer plates may be modified in such a manner that they will be suitable for a different freezing medium and in this manner provide the optimal freezing capability.
The invention addresses this by providing a modification of a freezer plate where said freezer plate has an inlet and an outlet for letting a freezing medium into and out of the interior of said freezing plate, where the freezing plate has two parallel side con-
DK 181588 B1 3 duits, and where a plurality of freezer plate sections is arranged orthogonal to and in between said side conduits, and where a primary freezing medium communication port is provided in each end of said freezer plate section, creating freezing medium communication between each freezer plate section and each side conduit, character- ized in that a secondary side conduit is inserted inside at least one side conduit, where said secondary side conduit is provided with secondary freezing medium communi- cating ports overlapping the primary freezing medium communication ports.
By inserting a secondary side conduit inside the primary side conduits, i.e. the con- duits which are already part of the freezer plate, it is possible in an economic way, to modify the freezing plate in that only an end plate or end limitation of the side conduit needs to be removed in order to insert the secondary side conduit inside the side con- duit.
Due to the fact that the freezing medium communication ports in the second side con- duit may be dimensioned as desired, it is possible to dimension this secondary freez- ing medium communication ports such that they will provide the optimum flow/resistance to the flow of freezing medium once the freezer plate is brought back into action.
When the secondary side conduits are fitted inside the original side conduits the re- moved end section may be replaced and the freezer plate is thereby prepared for fur- ther freezing activity with the new freezing medium.
In a further advantageous embodiment of the invention the side conduit in a cross- section orthogonal to the longitudinal direction has an inner shape complementary to the outer shape of a corresponding cross-section in the secondary side conduit.
By providing the secondary side conduit with a cross-section corresponding substan- tially to the inner cross-section of the side conduit a very close fit may be obtained between the two side conduits, i.e. the original side conduit and the secondary side conduit which has been inserted during the modification. A very small decrease in flow area for the freezing medium may be provided such that the capacity of the freezer plate may substantially be maintained. In this manner only the size of the
DK 181588 B1 4 freezing medium communication ports will determine the flow of freezing medium inside the freezer plates. Furthermore, as the secondary side conduit is substantially supported completely by the inner side of the original side conduit the material thick- ness of the secondary side conduit may be very thin as any forces due to the pressure of the freezing medium and normal handling of the freezer plates will be carried by the original freezer plate constructions and therefore also by the original side conduits.
The provision of the inner secondary side conduit in a thin material and substantially in complete contact with the inner side of the side conduit, also provides good thermal contact, such that the insertion of the secondary conduit does not significantly de- crease the freezing ability of the part of the freezing plate constituted by the side con- duits.
In this connection it is also to be noted that the secondary side conduits are manufac- tured from the same material as the side conduits. Often this is aluminum due to the material’s good strength and thermal properties, but also other materials are contem- plated, such as stainless steel, regular steel, composite materials as well as polymer based materials.
In a further advantageous embodiment the secondary freezer medium communication ports are provided with a gasket which provides tightening between the primary freez- ing medium communicating ports and the secondary freezing medium communicating ports. The provision of gaskets between the original freezing medium communication ports and the secondary freezing medium communication ports provided in the sec- ondary side conduit ensures that freezing medium is communicated directly from the side conduit into the freezer plate section. In this manner undesired flow of freezing medium between the original side conduit and the secondary side conduit is avoided.
Furthermore freezing medium which is not being circulated might heat up and hence become detrimental for the freezing process.
This may lead to difficulties in precisely controlling the temperature and flow rate of the freezer medium and as such the gaskets will ensure that the modified freezer plate will perform in exactly the desired manner or better than the originally constructed freezer plate.
DK 181588 B1
The invention is also directed to a method of modification of a freezer plate, where said freezer plate has an inlet and an outlet for letting a freezing medium into and out of the interior of said freezing plate, where the freezing plate has two parallel side conduits, and where a plurality of freezer plate sections are arranged orthogonal to and 5 in between said side conduits, and where a primary freezing medium communication port is provided in each end of said freezer plate section, creating freezing medium communication between each freezer plate section and each side conduit, where said side conduits in either end is provided with end plates, closing off the side conduit, and where - in a first step one end plate is removed allowing access to the interior of the side conduit; - a secondary side conduit is selected, said secondary side conduit having an outer dimension fitting inside the interior of the side conduit, and where said secondary side conduit is provided with secondary freezing medium communicating ports arranged along the length of the secondary side conduit with a mutual spacing such that as the secondary side conduit is arranged inside the side conduit the secondary freezing me- dium communicating ports will overlap the primary freezing medium communicating ports; - reestablishing the end plate, thereby creating a closed side conduit only having freez- ing medium communicating ports and the inlet and/or the outlet. first step characterized in that a secondary side conduit is inserted inside the side con- duit, where said secondary side conduit is provided with secondary freezing medium communicating ports overlapping the primary freezing medium communication ports.
Naturally the advantages obtained with this modifying process correspond fully to the advantages obtained as described above.
The invention will now be described with reference to the accompanying drawings in which
Figure 1 illustrates a freezing plate of the type typically used in horizontal plate freezers
DK 181588 B1 6
Figure 2 illustrates a cross-section perpendicular to the longitudinal direction of a side conduit
Figure 3 illustrates a secondary side conduit
Figure 3a illustrates a detail of the combined wall section
In figure 1 is schematically illustrated a freezing plate of the type typically used in horizontal plate freezers. In this context it is important to notice that the same freezer principles are also utilized in so-called vertical plate freezers where freezer plates are interspaced with the product to be frozen such that by circulating a cryonic liquid in- side the freezer plate, be it horizontal or vertical, the freezer plates which are in ther- mal contact with the product to be frozen will interact and due to the circulation of cryonic liquid inside the freezer plates the product will be frozen.
In order to illustrate the present invention figure 1 schematically illustrates a freezer plate 1 as used in a horizontal freezer. The freezer plate 1 comprises side conduits 2, 3 where an inlet 4 for cryonic freezing medium is provided in one side conduit 2 such that the freezer medium/cryonic liquid may be introduced through the inlet 4 flow inside the side conduit 2 and by means of communication ports 10 (see figure 2) will flow into the freezer plate sections 6 arranged between the side conduits 2, 3.
On the other side as to the first side conduit 2, a second side conduit 3 is arranged where corresponding freezer medium communication ports are arranged such that the freezer medium/cryonic liquid may flow into the second side conduit and eventually be led to the outlet 5.
The inlet 4 and the outlet 5 are typically connected to a freezer/compressor station where the cryonic liquid is cooled down again in that during the passage through the freezer plate 1 the cryonic medium will absorb heat from the product to be frozen and as such by cooling the medium down again before introducing it into the inlet 4 the freezing cycle is maintained.
DK 181588 B1 7
In figure 2 is illustrated a cross-section perpendicular to the longitudinal direction of a side conduit 2. The side conduit 2 will typically have a rectangular shape and be con- nected with the freezer plate sections 6 such that the top part of the side conduit 2 and the top part of the freezer plate section 6 form a substantially planar surface 8 which is suitable to receive product to be frozen.
Between the side conduit 2 and the freezer plate section 6 is provided a freezing me- dium communication port 10 allowing freezing medium flowing in the side conduit 2 to enter the freezer plate section 6.
When it is desirable according to the present invention to modify the flow pattern in- side a freezing plate, a secondary side conduit 12 as illustrated in figure 3 is inserted inside the original side conduit 2. The secondary side conduit is also provided with a secondary freezing medium communication ports 14 which when the secondary side conduit is inserted inside the original side conduit 2, the secondary freezing medium communication ports will overlap the original freezing medium communication ports 10. In this manner the secondary freezing medium communication port will be deter- mining the rate of flow from the side conduit 2 modified by inserting the secondary side conduit 12 into the freezer plate sections 6.
As illustrated in figure 3a illustrating a detail of the combined wall section when the secondary side conduit 12 is inserted inside the original side conduit 2 the wall sec- tions 2, 12 are very close to each other. Furthermore, as the original side conduit is dimensioned to address the forces which a freezer plate may be exposed to during use the secondary side conduit 12 does not need to have the same strength properties and as such the wall thickness of the secondary side conduit may be substantially smaller thereby allowing the overall flow area of the side conduit to be substantially main- tained as it was before the modification process.
In order to install the secondary side conduit it is only necessary to remove an end section 16 (see figure 1) whereby the entire free cross-section of the side conduit is available. At this stage the secondary side conduit may be inserted inside the original side conduit 2. The secondary side conduit 12 is dimensioned such that the communi- cation ports 14 in the secondary side conduit 12 will be superposed the original com-
DK 181588 B1 8 munication ports 10 provided in the original side conduit such that it is ensured that the continuous flow of freezing medium/cryonic liquid may be maintained as original- ly designed.
After having inserted the secondary side conduit 12 inside the original side conduit 2 the end section may be refitted. In some instances it is only necessary to modify one side conduit in that the dimensioning of the secondary freezing medium communica- tion port will determine the entire flow through the freezer plates and as such the sec- ondary side conduit receiving the freezer medium/cryonic liquid which has passed through the freezer plate sections may have any desired size. This of course makes the modification of the freezer plates much easier in that only one side conduit needs to be modified.
After having fitted the secondary side conduit 12 inside the original side conduit 2 it is only necessary to retrofit the end section 16 and ensure that there is a liquid tightness in the freezer plate after which the entire freezer plate 1 is ready for use in a freezer plate installation.
Claims (4)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DKPA202070409A DK181588B1 (en) | 2020-06-23 | 2020-06-23 | Freezer plate, and method for modifying a freezer plate |
| PCT/DK2021/050198 WO2021259433A1 (en) | 2020-06-23 | 2021-06-21 | Freezer plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DKPA202070409A DK181588B1 (en) | 2020-06-23 | 2020-06-23 | Freezer plate, and method for modifying a freezer plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DK202070409A1 DK202070409A1 (en) | 2022-01-18 |
| DK181588B1 true DK181588B1 (en) | 2024-06-10 |
Family
ID=79282608
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DKPA202070409A DK181588B1 (en) | 2020-06-23 | 2020-06-23 | Freezer plate, and method for modifying a freezer plate |
Country Status (2)
| Country | Link |
|---|---|
| DK (1) | DK181588B1 (en) |
| WO (1) | WO2021259433A1 (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3234755A (en) * | 1964-03-09 | 1966-02-15 | Richelli Federico | Horizontal freezing plate for a twin contact freezer |
| US20020195234A1 (en) * | 2001-06-25 | 2002-12-26 | Nanping Wu | Plate freezer evaporator with carbon dioxide refrigerant |
| US20120292004A1 (en) * | 2011-05-20 | 2012-11-22 | National Yunlin University Of Science And Technology | Heat exchanger |
| WO2018199782A1 (en) * | 2017-04-24 | 2018-11-01 | Mar-Bud Spółka Z Ograniczoną Odpowiedzialnością | A heat exchange unit for devices with a heat pump, in particular an evaporator for manufacturing and storing ice |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB626192A (en) * | 1946-03-18 | 1949-07-11 | Dole Refrigerating Products In | Improvements in or relating to a vacuum type cold plate |
| JPH04371798A (en) * | 1991-06-21 | 1992-12-24 | Hitachi Ltd | Heat exchanger |
| EP1548380A3 (en) * | 2003-12-22 | 2006-10-04 | Hussmann Corporation | Flat-tube evaporator with micro-distributor |
| KR100908769B1 (en) * | 2005-02-02 | 2009-07-22 | 캐리어 코포레이션 | Co-current heat exchangers and methods to promote uniform refrigerant flow |
| US20100300667A1 (en) * | 2009-06-01 | 2010-12-02 | Delphi Technologies, Inc. | Distributor tube and end cap subassembly |
| KR20140116626A (en) * | 2013-03-25 | 2014-10-06 | 엘지전자 주식회사 | A heat exchanger |
-
2020
- 2020-06-23 DK DKPA202070409A patent/DK181588B1/en active IP Right Grant
-
2021
- 2021-06-21 WO PCT/DK2021/050198 patent/WO2021259433A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3234755A (en) * | 1964-03-09 | 1966-02-15 | Richelli Federico | Horizontal freezing plate for a twin contact freezer |
| US20020195234A1 (en) * | 2001-06-25 | 2002-12-26 | Nanping Wu | Plate freezer evaporator with carbon dioxide refrigerant |
| US20120292004A1 (en) * | 2011-05-20 | 2012-11-22 | National Yunlin University Of Science And Technology | Heat exchanger |
| WO2018199782A1 (en) * | 2017-04-24 | 2018-11-01 | Mar-Bud Spółka Z Ograniczoną Odpowiedzialnością | A heat exchange unit for devices with a heat pump, in particular an evaporator for manufacturing and storing ice |
Also Published As
| Publication number | Publication date |
|---|---|
| DK202070409A1 (en) | 2022-01-18 |
| WO2021259433A1 (en) | 2021-12-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PAT | Application published |
Effective date: 20211224 |
|
| PME | Patent granted |
Effective date: 20240610 |