EP0730719B1 - Echangeur frigorifique, procede de commande d'un tel echangeur et installation de refrigeration comportant un tel echangeur - Google Patents
Echangeur frigorifique, procede de commande d'un tel echangeur et installation de refrigeration comportant un tel echangeur Download PDFInfo
- Publication number
- EP0730719B1 EP0730719B1 EP95902819A EP95902819A EP0730719B1 EP 0730719 B1 EP0730719 B1 EP 0730719B1 EP 95902819 A EP95902819 A EP 95902819A EP 95902819 A EP95902819 A EP 95902819A EP 0730719 B1 EP0730719 B1 EP 0730719B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- elements
- circulation
- exchanger
- defrosting
- unit according
- 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.)
- Expired - Lifetime
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Classifications
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- 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
- F25B39/028—Evaporators having distributing means
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- 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
- F25B41/00—Fluid-circulation arrangements
- F25B41/40—Fluid line arrangements
- F25B41/42—Arrangements for diverging or converging flows, e.g. branch lines or junctions
- F25B41/48—Arrangements for diverging or converging flows, e.g. branch lines or junctions for flow path resistance control on the downstream side of the diverging point, e.g. by an orifice
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- 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
- F25B5/00—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity
- F25B5/02—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity arranged in parallel
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- 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
- F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
- F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
- F25D17/06—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
- F25D17/067—Evaporator fan units
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- 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
- F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
- F25D21/06—Removing frost
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- 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
- F25B2347/00—Details for preventing or removing deposits or corrosion
- F25B2347/02—Details of defrosting cycles
- F25B2347/021—Alternate defrosting
Definitions
- the invention relates to a refrigeration installation according to the preamble of claim 1 and a method of controlling such an installation refrigerator.
- the refrigeration system can be a cold room, a freezing room or deep freezing, a refrigerated sales unit or a display case refrigerated or similar.
- Such an installation comprises a body which delimits an enclosure inside which a given temperature - low - must be maintained.
- air circulation means suitable for circulate, in this enclosure, air and at least a refrigerant exchanger through which a fluid flows refrigerator or refrigerant.
- Such an exchanger is usually presented under the form of a battery having several layers and several ranks.
- the battery is arranged in two elements similar to each other, mounted in parallel, separated from each other by partitions. Each element has its own air flow and its own fan. This structure allows to maintain a degree satisfactory humidity, the evaporators operating always alternately.
- GB-A-2 164 133 also relates to a structure tending to maintain a hygrometric degree satisfactory in a refrigerated display case.
- the structure includes two evaporators mounted in parallel, one providing a cooling function, while the other provides a humidification function.
- the invention aims to ensure defrosting an exchanger of a refrigeration installation while, simultaneously, now in the enclosure to which is associated this installation a temperature of acceptable refrigeration and meets required requirements and avoiding having a cooling capacity in excess of needs.
- the invention proposes, according to a first aspect, a refrigeration installation as it was previously mentioned, containing the characteristics of the characterizing part of the claim 1.
- the exchanger which includes heat exchange means, further comprises air circulation means on the exchange means thermal arranged to form a common air flow to the inlet and a common air flow at the outlet of the drums.
- the exchanger also includes means selective air circulation or non-circulation on the heat exchange means of each element so air circulation is allowed for some elements and prohibited for others.
- Air circulation is permitted for elements in cold production situation and prohibited for elements in a defrost situation.
- Means of heating of the heat exchange means for each of the elements are planned so as to be active for a element for which air circulation is prohibited and inactive for an element through which air circulation is allowed.
- the invention relates to a method of controlling such refrigeration installation according to claims 14 or 15.
- the refrigeration system comprises on the one hand a refrigeration exchanger controlled by the process which comes to be mentioned and secondly a circuit for the fluid refrigerant or refrigerant, between the outlets and the battery cell inputs.
- Such an installation includes means selective circulation or non-circulation of the fluid refrigerant or refrigerant in each of the elements of the battery so that circulation is ensured for elements in a cold production situation and the circulation is prohibited for the element (s) in defrosting situation.
- Such selective means include valves or equivalent and control means of said valves.
- the circuit for the refrigerant or at least partly refrigerant branches mounted in parallel, in a number equal to that of battery cells, one branch per cell.
- the circuit comprises on its entirety several branches mounted in parallel.
- a common regulator can be provided many elements. And, in particular, a unique regulator mounted on a single branch of the circuit.
- a refrigerant distributor is interposed between this single branch downstream of the regulator and the plurality of branches upstream of the means selective circulation or non-circulation.
- a refrigeration installation conforming to the invention comprises a refrigeration exchanger 1 and a circuit 2 for the refrigerant or refrigerant circulating in the exchanger 1.
- Means of air circulation 4 are able to put the air in the enclosure 3 in circulation while ensuring its passage over the exchanger 1.
- These means 4 can include a fan 13.
- the refrigeration chamber 3 can be a room cold, a freezing or deep-freezing chamber, a refrigerated display cabinet or a refrigerated display case or another similar provision.
- This enclosure 3 can be brought to a temperature of the order of a few degrees celsius, for example typically around 2 ° C for application to the preservation of food products fresh (Figure 1). In other applications, the temperature in enclosure 3 may be negative (figure 2).
- the refrigeration exchanger 1 comprises means 5 for circulation of a refrigerant or refrigerant under tube shape.
- Means 5 are associated with means 6 surface exchange heat exchangers. These means 6 are for example successive fins, spaced apart from each other, mounted transversely around the tubes means 5.
- the means 5 for circulating refrigerant or refrigerant and the heat exchange means 6 are arranged in the form of a battery having several tablecloths 7 and several rows 8.
- the layers 7a to 7e are placed substantially horizontally.
- Rows 8a to 8e are placed substantially vertically.
- plies 7 and rows 8 are arranged in a plurality of elements 9 similar to each other from the point of view structural which together form the battery.
- Each item includes five rows 8a, 8b, 8c, 8d and 8e.
- the elements 9 are mounted in parallel in what concerns means 5. They form a compact and are separated from each other by partitions 10. In particular, the heat exchange means 6 are separate each other for the different elements 9 of so as to avoid any thermal bridge between them.
- Partitions 10 provide some isolation between the elements 9. They also ensure the collection of defrost water to prevent these only pass into a neighboring element.
- the partitions 10 can be in the form of solid plates with good insulation capacity thermal.
- the partitions 10 and the means 6 heat exchangers do not have thermal bridges between them.
- the partitions 10 are arranged substantially horizontally or slightly inclined on the horizontal to ensure the flow of water from defrosting.
- Figure 1 shows the case of an element comprising a single sheet 7, it must be understood that the invention applies to the case where each element 9 comprises several tablecloths 7.
- each of them includes an entry 11 and a own exit 12, belonging to means 5 of circulation refrigerant or refrigerant.
- the battery 5, 6 which has just been described forms a all unitary, the elements 9 which compose it being placed one next to the other.
- Battery 5, 6 includes at least three elements 9.
- Each element 9 has a cooling capacity which is only a fraction of the total nominal power of exchanger 1.
- the term nominal cooling capacity total of the exchanger 1 the power that the exchanger has in a normal operating situation. This situation is such that the exchanger then makes it possible to reach in enclosure 3 the desired temperature.
- At least one of the elements 9 can be in defrosting situation and at least two elements 9 in cold production situation. Elements 9 are round alternately in defrost and in de cold production.
- the refrigeration capacity developed by all of the elements 9 in a situation of production of cold corresponds to the cooling capacity required for that enclosure 3 is at the required temperature.
- each element 9 is arranged to have a power equal to half the total normal power of the exchanger. Indeed, two elements 9 work together.
- the battery 5, 6 comprises four elements 9, these each have a cooling capacity equal to a third of the total normal power of the exchanger.
- each element 9 has a cooling power equal to a quarter of the power total normal heat exchanger.
- each element 9 is in defrosting situation one cycle every n cycles and in cold production situation n-1 cycles every n cycles.
- the air circulation means 4 ensure the passage of air over the heat exchange means 6. These means 4 are arranged to define and form an air flow which, both at the input and at the output of the battery 5, 6 is common to the different elements 9.
- One or more fans 13 interposed on the common air flow of the battery 5, 6, to entry and / or exit. When more than one is planned fans these all act on the air flow common.
- one or more elements 9 in cold production situation in the N cycle are brought in a defrosting situation.
- the element (s) 9 in defrost situation in cycle N are brought, conversely, in a cold production situation.
- the exchanger control is reiterated according to this process, until each element 9 has been at least once in defrosting situation.
- the cooling capacity temporarily implemented is one and a half times the total nominal power of the exchanger 1.
- the starting power is 25% higher than total nominal heat exchanger power 1. More selective means 14 for circulation or not circulation of the refrigerant or refrigerant in each of the elements 9 of the battery 5, 6.
- the selective means 14 include valves 15 or equivalent and means 16 for controlling said valves 15.
- valves 15 are associated with the different items 9.
- the selective means 14 are located either on the side inputs 11 of the elements 9 of the battery 5, 6 or output side 12.
- Circuit 2 has at least several branches 17 mounted in parallel, in a number equal to that of elements 9 of the battery 5, 6. At each element 9 corresponds to a branch 17.
- the circuit 2 partly comprises several branches 17 mounted in parallel on the side of the inputs 11, and a single branch 18 on the outlet side 12. In another variant not shown, it can be substituted a single bundle of several branches to the single branch 18.
- the circuit 2 comprises on its entirety several branches such as 17.
- a regulator is provided single 19 mounted on the branch 18. This regulator 19 allows also a phase change. Upstream liquid, the refrigerant goes into the gaseous phase downstream.
- a distributor 20 of the refrigerant Downstream of the regulator 19 and between the single branch 18 and the plurality of parallel branches 17 is interposed a distributor 20 of the refrigerant.
- the circuit or exchanger 2 also includes -en the occurrence upstream of the holder 19- means 21 of refrigeration production suitable in particular for vacuuming at low pressure the refrigerant from a manifold 22 connecting the parallel outputs 12.
- the installation may also include means not shown such as probe, clock, calculator having to identify the degree of icing of the elements 9 during cold production as well as the degree of defrosting of the elements 9 in a defrosting situation.
- These locating means can be coupled to the means selective 14 for circulation or non-circulation of the fluid refrigerant or refrigerant.
- the degree of icing can be measured, for example, by the pressure drop in the air flow in an element 9 between its input and its output. Indeed, plus the heat exchange means 6 are covered with the more difficult it is to pass air. he means are then provided for measuring this loss of charge.
- the installation may include control means, not shown, means 4 of air circulation which can also be coupled to the means selective 14 for circulation or non-circulation of the fluid refrigerant or refrigerant.
- the installation may include sensors or temperature and / or flow sensors as well as means such as clock or time delay and, more generally control or regulating or safety useful or necessary for the operation of this type of installation.
- the partitions 10 ensure according to one embodiment possible some retention of water from defrost. Although it does not appear in the application considered essential, it then follows that the circulating air can be humidified, in a certain measure, by contact with defrosting water.
- partitions 10 ensure the evacuation of water from defrosting.
- the partitions 10 are inclined on the horizontal and the defrost water eliminated at low collection point.
- the invention also includes the case where several batteries such as 5, 6 mounted are provided in series or in parallel.
- Figure 2 a part installation comprising the exchanger 1 and the means of air circulation 4, intended to be placed in a part at negative room temperature.
- this part is the enclosure which is intended to be at temperature negative.
- the installation part considered includes a casing 23 fixed to a wall 24 which constitutes a ceiling.
- the layout of the exchanger and the installation which features, shown in Figure 2, is similar to that of figure 1.
- the exchanger further comprises the components already described, means 25 selective circulation or non-circulation of air on the heat exchange means of each element 9.
- the means 25 are such as air circulation is authorized for certain elements 9 and prohibited for others.
- the selective means 25 comprise flaps mobile 26 or equivalent associated with means of ordered. These control means are in particular the means 16 provided in connection with the selective 14 means of circulation or non-circulation of refrigerant or refrigerant.
- the control means are such as the means selective 25 are controlled so that air circulation be authorized for elements 9 in situation of production of cold and prohibited for elements 9 in defrosting situation.
- the system exchanger further comprises means heating 27 of the heat exchange means 6.
- the heating means 27 are associated with each of the elements 9 of the battery. They are also associated with the means of control of selective means 25. Control of means of heating 27 is such that these heating means 27 are active (i.e. heating) for element 9 for which air circulation is prohibited (element in defrost situation) and are inactive for an element 9 for which air circulation is authorized (element in cold production situation).
- the heating means 27 are functionally coupled to the selective means of air circulation or non-circulation.
- the movable flaps 26 of the selective means 25 can be pivotally mounted between an extreme position opening and an extreme opposite closing position. In FIG. 2, four flaps 26a are in position opening and a flap 26b in the closed position.
- the flaps 26 are located on the upstream side with respect to the general flow direction of the air represented by arrow D.
- Another series of shutters can be arranged in downstream of the elements 9, to completely isolate from the air flow the defrosting element (s).
- the selective means 25 are in the form of fans.
- a fan is provided for each element 9. During operation, the fans ensure the passage of air. When stopped, a fan prevents or in any case hinders the passage of air through the corresponding element.
- the heating means 27 can be the subject of different variants. According to an achievement possible, these are heating resistors or air hot blown.
- the partitions 10 each have collection means 28 water from defrosting and means of disposal 29 of these waters are also provided.
- Figure 2a shows an exchanger such as that shown in Figure 2 with a direction wall 30 vertical rather than horizontal for the wall 24.
- the means 4 of circulation are placed in the upper position while the partitions 10 are placed in the lower position.
- the partitions 10 are, in this embodiment, directional general vertical.
- the defrost water then falls vertically and can be collected by a bin 31 having means evacuation 32.
- the distributor 20 in an embodiment where it integrates two functions.
- the first function is to distribute the refrigerant or refrigerant to the branches 17.
- the second function is to allow cut off the flow of refrigerant or refrigerant on each branch 17 independently of each other.
- the distributor 20 includes an inlet 33 for the fluid 1 which communicates with a distribution chamber 34. This distribution room communicates, opposite the entrance 33, with a plurality of outputs 35.
- the valves 15 are arranged near the outputs 35.
- the outputs 35 are themselves connected to the branches 17 of the installation.
- the distributor 20 is equipped with solenoid valves 36 the coils of which are mounted on armature sleeves 37, and a removable plate 38 is integral with said shirts 37. Each shirt 37 is tightly fixed on the plate 38.
- a movable core or armature 39 depending on the arrow direction N is shown in the lower position on Figure 5 and then closes the way out of the distributor when the coil is energized.
- the core or armature 39 clears the passage or way out of the fluid when the coil is de-energized.
- Pipe from production equipment installation refrigerant and opening into the chamber 34 is preferably made of metal and brazed or welded on the distributor 20.
Description
- la figure 1 est une représentation schématique et en perspective d'une partie d'installation de réfrigération selon l'invention.
- La figure 2 est une vue schématique en coupe verticale d'un échangeur pour plafond de chambre froide à température négative conforme à une variante de réalisation de l'invention.
- La figure 2a est une vue similaire à la figure 2, d'un autre mode de réalisation de cette variante.
- La figure 3 est une vue schématique en coupe d'un distributeur à vannes intégrées pour une installation conforme à l'invention.
- La figure 4 est une vue en perspective d'un mode réalisation de distributeur.
- La figure 5 est une vue en coupe axiale selon la ligne V.V de la figure 4.
Claims (15)
- Installation frigorifique telle que chambre froide ou meuble frigorifique de vente, du type comprenant dans un circuit (2), des moyens (5) de circulation d'un fluide frigorigène auxquels sont associés des moyens (6) surfaciquement étendus d'échange thermique ; ces moyens (5, 6) étant disposés sous la forme d'une batterie ayant plusieurs nappes (7) et plusieurs rangs (8) agencés en une pluralité d'éléments (9) semblables entre eux, montés en parallèle, séparés les uns des autres par des séparations (10) assurant les fonctions d'isolation thermique et de collecte des eaux issues de dégivrage ; chaque élément comportant au moins une nappe (7) ainsi qu'une entrée (11) et une sortie (12) propres appartenant aux moyens de circulation (5),
caractérisé en ce que la batterie comprend au moins trois éléments (9) ainsi qu'un détendeur unique (19) commun aux éléments (9), monté sur une branche unique (18) du circuit (2) et situé en amont de l'entrée (11) des éléments (9), tandis qu'une pluralité de branches montées en parallèle, est située en aval dudit détendeur (19) ; chaque élément (9) monté sur l'une des branches (17) montées en parallèle ayant une puissance frigorifique qui est une fraction de la puissance nominale totale de l'échangeur (1), de manière à permettre, qu'à un moment donné du fonctionnement de l'échangeur (1), un au moins des éléments (9) soit en situation de dégivrage et deux au moins des éléments (9) en situation de production de froid, les éléments (9) étant tour à tour en situation de dégivrage et en situation de production de froid. - Installation selon la revendication 1, caractérisée en ce que l'échangeur (1) comporte en outre des moyens de circulation d'air (4) sur les moyens d'échange thermique (6) agencés pour former un flux d'air commun à l'entrée et un flux d'air (D) commun à la sortie de la batterie.
- Installation selon la revendication 2, caractérisée en ce que les moyens de circulation d'air (4) comprennent au moins un ventilateur (13) interposé sur un flux d'air (D) commun à la batterie.
- Installation selon la revendication 1, caractérisée en ce que les éléments (9) de l'échangeur (1) forment un ensemble compact.
- Installation selon la revendication 1, caractérisée en ce que les séparations (10) assurent aussi soit la fonction de rétention, soit la fonction d'évacuation des eaux issues de dégivrage.
- Installation selon la revendication 2, caractérisée en ce que l'échangeur (1) comprend en outre des moyens (25) sélectifs de circulation ou de non-circulation d'air sur les moyens d'échange thermique (6) de chaque élément (9), de manière que la circulation d'air soit autorisée pour certains éléments et interdite pour d'autres, et par exemple des volets (26) mobiles ou équivalent, associés à des moyens de commande (16).
- Installation selon la revendication 6, à température négative telle que chambre de congélation, caractérisée en ce que les moyens (25) sélectifs de circulation ou de non-circulation d'air sont agencés pour que la circulation soit autorisée pour les éléments (9) en situation de production de froid et interdite pour les éléments (9) en situation de dégivrage.
- Installation selon la revendication 7, caractérisée en ce que l'échangeur (1) comprend en outre des moyens de chauffage (27) des moyens d'échange thermique (6) pour chacun des éléments (9) de la batterie associées à des moyens de commande (16) de manière à être actifs pour un élément (9) pour lequel la circulation d'air est interdite et à être inactif pour un élément (9) pour lequel la circulation d'air est autorisée.
- Installation selon la revendication 1, caractérisée en ce qu'elle comporte, en aval du détendeur (19), des moyens (14) sélectifs de circulation ou de non-circulation du fluide frigorigène dans chacun des éléments (9) de la batterie de manière que la circulation soit assurée pour les éléments (9) en situation de production de froid et la circulation soit interdite pour le ou les éléments (9) en situation de dégivrage.
- Installation selon la revendication 9, caractérisée en ce que les moyens (14) sélectifs de circulation ou de non-circulation comprennent des vannes (15) ou équivalents et des moyens (16) de commande desdites vannes, disposées en aval du détendeur (19).
- Installation selon la revendication 1, caractérisée en ce que le circuit (2) comporte, au moins pour partie, plusieurs branches (17) montées en parallèle, en nombre égal à celui des éléments (9) de la batterie, une branche (17) par élément (9).
- Installation selon la revendication 9, caractérisée en ce qu'un distributeur (20) du fluide frigorigène est interposé entre le détendeur (19) et la pluralité de branches (17), en amont des moyens (14) sélectifs de circulation ou de non circulation de fluide frigorigène.
- Installation selon l'une quelconque des revendications 1 à 12, caractérisée en ce qu'elle est associée à une enceinte (3) de réfrigération, des moyens (4) de circulation d'air étant aptes à mettre l'air de l'enceinte (3) en circulation tout en assurant son passage sur les moyens d'échange thermique (6).
- Procédé de commande d'une installation selon l'une quelconque des revendications 1 à 13, dans lequel :dans un cycle donné N de fonctionnement de l'échangeur (1), on rend opératoire deux au moins des éléments (9) pour la production de froid, tandis qu'on place un au moins des éléments (9) en situation de dégivrage ;lorsque le dégivrage du ou des éléments (9) en situation de dégivrage est terminé ou suffisant, on passe à un autre cycle semblable N+1 dans lequel un ou des éléments (9) en situation de production de froid dans le cycle N sont en situation de dégivrage tandis que le ou les éléments (9) en situation de dégivrage dans le cycle N sont en situation de production de froid, tandis que durant un cycle de démarrage de l'échangeur (1) et alors qu'aucun élément (9) ne doit être dégivré, on rend temporairement opératoire la totalité des éléments (9) jusqu'à obtention d'une température donnée du flux d'air (D) en sortie, grâce à une surpuissance temporaire.
- Procédé de commande d'une installation selon l'une quelconque des revendications 1 à 13, dans lequel :dans un cycle donné N de fonctionnement de l'échangeur (1), on rend opératoire deux au moins des éléments (9) pour la production de froid, tandis qu'on place un au moins des éléments (9) en situation de dégivrage ;lorsque le dégivrage du ou des éléments (9) en situation de dégivrage est terminé ou suffisant, on passe à un autre cycle semblable N+1 dans lequel un ou des éléments (9) en situation de production de froid dans le cycle N sont en situation de dégivrage tandis que le ou les éléments (9) en situation de dégivrage dans le cycle N sont en situation de production de froid, et dans lequel on commande le passage d'un cycle au cycle suivant par un réglage préalable ou par une commande (16) liée au fonctionnement, notamment le degré de givrage des moyens d'échange thermique (6), par exemple mesuré par la perte de charge du flux d'air dans un élément (9) entre son entrée et sa sortie.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9314460A FR2713320B1 (fr) | 1993-12-02 | 1993-12-02 | Procédé de commande et de dégivrage en continu d'un échangeur frigorifique et installation équipée d'un tel échangeur. |
FR9314460 | 1993-12-02 | ||
PCT/FR1994/001401 WO1995015467A1 (fr) | 1993-12-02 | 1994-11-30 | Echangeur frigorifique, procede de commande d'un tel echangeur et installation de refrigeration comportant un tel echangeur |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0730719A1 EP0730719A1 (fr) | 1996-09-11 |
EP0730719B1 true EP0730719B1 (fr) | 1998-06-03 |
Family
ID=9453484
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95902819A Expired - Lifetime EP0730719B1 (fr) | 1993-12-02 | 1994-11-30 | Echangeur frigorifique, procede de commande d'un tel echangeur et installation de refrigeration comportant un tel echangeur |
Country Status (9)
Country | Link |
---|---|
US (1) | US5704221A (fr) |
EP (1) | EP0730719B1 (fr) |
JP (1) | JPH09505879A (fr) |
AT (1) | ATE166958T1 (fr) |
CA (1) | CA2178080A1 (fr) |
DE (1) | DE69410823T2 (fr) |
ES (1) | ES2118541T3 (fr) |
FR (1) | FR2713320B1 (fr) |
WO (1) | WO1995015467A1 (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101784848B (zh) * | 2007-06-19 | 2011-11-16 | 丹福斯有限公司 | 制冷设备 |
CN108253664A (zh) * | 2017-12-19 | 2018-07-06 | 珠海格力电器股份有限公司 | 一种换热器、空调室内机和空调器 |
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DE10126817A1 (de) * | 2001-06-01 | 2002-12-05 | Bsh Bosch Siemens Hausgeraete | Kältegerät |
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US7806171B2 (en) * | 2004-11-12 | 2010-10-05 | Carrier Corporation | Parallel flow evaporator with spiral inlet manifold |
US20060137368A1 (en) * | 2004-12-27 | 2006-06-29 | Carrier Corporation | Visual display of temperature differences for refrigerant charge indication |
KR100908769B1 (ko) * | 2005-02-02 | 2009-07-22 | 캐리어 코포레이션 | 병류 열교환기와, 균일한 냉매 유동을 촉진하는 방법 |
WO2006083445A2 (fr) * | 2005-02-02 | 2006-08-10 | Carrier Corporation | Separateur liquide-vapeur pour echangeur de chaleur a minicanaux |
US7293420B2 (en) * | 2005-10-07 | 2007-11-13 | Marine Desalination Systems, L.L.C. | Atmospheric moisture harvesters |
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JP5153701B2 (ja) * | 2009-03-19 | 2013-02-27 | 三菱電機株式会社 | 流体分配器及びその製造方法 |
JP5208030B2 (ja) * | 2009-03-23 | 2013-06-12 | 三菱電機株式会社 | 空気調和装置 |
US8506732B2 (en) * | 2009-08-07 | 2013-08-13 | Radyne Corporation | Heat treatment of helical springs or similarly shaped articles by electric resistance heating |
JP5786957B2 (ja) * | 2011-12-19 | 2015-09-30 | トヨタ自動車株式会社 | 冷却装置 |
ES2702291T3 (es) * | 2012-04-26 | 2019-02-28 | Mitsubishi Electric Corp | Intercambiador de calor y método de intercambio de calor |
US20140338392A1 (en) * | 2012-12-13 | 2014-11-20 | Chong Mook Park | Evaporative Chiller Using Plate Type String-Screen-Fills as Heat Exchanger and Fabrication Thereof |
DE112014000558T5 (de) * | 2013-01-25 | 2015-10-22 | Trane International Inc. | Kapazitätsmodulierung einer Ausdehnungsvorrichtung einer Heizungs-, Lüftungs- und Klimaanlage |
JP6194526B2 (ja) * | 2013-06-05 | 2017-09-13 | 高周波熱錬株式会社 | 板状ワークの加熱方法及び加熱装置並びにホットプレス成形方法 |
ITMI20131519A1 (it) * | 2013-09-13 | 2015-03-14 | Frimont Spa | Impianto modulare per la produzione di ghiaccio |
US20150083378A1 (en) * | 2013-09-23 | 2015-03-26 | Hamilton Sundstrand Corporation | System and method for distributing refrigerant to a parallel flow heat exchanger using refrigerant injectors |
JP6329786B2 (ja) * | 2014-03-13 | 2018-05-23 | 新晃工業株式会社 | 空調機の熱交換器 |
JP6234849B2 (ja) * | 2014-03-13 | 2017-11-22 | 新晃工業株式会社 | 空調機の熱交換器 |
CN105276874A (zh) * | 2014-07-10 | 2016-01-27 | 南京理工大学 | 一种利用储存液体过冷热除霜的热泵空调机组 |
CN204183064U (zh) * | 2014-09-30 | 2015-03-04 | 名硕电脑(苏州)有限公司 | 气体冷却装置及具有该气体冷却装置的回焊炉 |
KR20170067559A (ko) * | 2015-12-08 | 2017-06-16 | 엘지전자 주식회사 | 냉장고 및 그 제어방법 |
KR101849979B1 (ko) * | 2017-12-07 | 2018-04-19 | 최인석 | 고압수소용 열교환기 |
KR102582522B1 (ko) * | 2018-11-29 | 2023-09-26 | 엘지전자 주식회사 | 공기조화기 |
CN109579387B (zh) * | 2019-01-11 | 2021-01-15 | 北京机械设备研究所 | 基于单外侧换热器多支路交替除霜的空气源热泵系统的除霜方法 |
US11559147B2 (en) | 2019-05-07 | 2023-01-24 | Carrier Corporation | Refrigerated display cabinet utilizing a radial cross flow fan |
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-
1993
- 1993-12-02 FR FR9314460A patent/FR2713320B1/fr not_active Expired - Fee Related
-
1994
- 1994-11-30 DE DE69410823T patent/DE69410823T2/de not_active Expired - Lifetime
- 1994-11-30 ES ES95902819T patent/ES2118541T3/es not_active Expired - Lifetime
- 1994-11-30 CA CA002178080A patent/CA2178080A1/fr not_active Abandoned
- 1994-11-30 US US08/652,533 patent/US5704221A/en not_active Expired - Lifetime
- 1994-11-30 WO PCT/FR1994/001401 patent/WO1995015467A1/fr active IP Right Grant
- 1994-11-30 JP JP7515448A patent/JPH09505879A/ja active Pending
- 1994-11-30 AT AT95902819T patent/ATE166958T1/de not_active IP Right Cessation
- 1994-11-30 EP EP95902819A patent/EP0730719B1/fr not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101784848B (zh) * | 2007-06-19 | 2011-11-16 | 丹福斯有限公司 | 制冷设备 |
CN108253664A (zh) * | 2017-12-19 | 2018-07-06 | 珠海格力电器股份有限公司 | 一种换热器、空调室内机和空调器 |
Also Published As
Publication number | Publication date |
---|---|
WO1995015467A1 (fr) | 1995-06-08 |
ATE166958T1 (de) | 1998-06-15 |
CA2178080A1 (fr) | 1995-06-08 |
DE69410823D1 (de) | 1998-07-09 |
FR2713320A1 (fr) | 1995-06-09 |
US5704221A (en) | 1998-01-06 |
FR2713320B1 (fr) | 1996-02-02 |
JPH09505879A (ja) | 1997-06-10 |
ES2118541T3 (es) | 1998-09-16 |
EP0730719A1 (fr) | 1996-09-11 |
DE69410823T2 (de) | 1999-01-14 |
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