FR2862738A1 - Pressure release valve for air conditioning plant, has slide with open front face having valve plate connected to slide through connecting rod and rotated towards seat, and control drilling closed before plate is supported against seat - Google Patents
Pressure release valve for air conditioning plant, has slide with open front face having valve plate connected to slide through connecting rod and rotated towards seat, and control drilling closed before plate is supported against seat Download PDFInfo
- Publication number
- FR2862738A1 FR2862738A1 FR0452674A FR0452674A FR2862738A1 FR 2862738 A1 FR2862738 A1 FR 2862738A1 FR 0452674 A FR0452674 A FR 0452674A FR 0452674 A FR0452674 A FR 0452674A FR 2862738 A1 FR2862738 A1 FR 2862738A1
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- Prior art keywords
- valve
- plate
- slide
- seat
- chamber
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- 238000005553 drilling Methods 0.000 title abstract 3
- 238000004378 air conditioning Methods 0.000 title description 7
- 230000007613 environmental effect Effects 0.000 claims 1
- 239000008188 pellet Substances 0.000 claims 1
- 239000003507 refrigerant Substances 0.000 description 8
- 239000003795 chemical substances by application Substances 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical group O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000007664 blowing Methods 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/22—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution
- F16K3/24—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members
- F16K3/26—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members with fluid passages in the valve member
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/22—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution
- F16K3/24—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members
- F16K3/26—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members with fluid passages in the valve member
- F16K3/267—Combination of a sliding valve and a lift valve
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0644—One-way valve
- F16K31/0655—Lift valves
-
- 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
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/31—Expansion valves
- F25B41/34—Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators
-
- 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
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/31—Expansion valves
- F25B41/34—Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators
- F25B41/345—Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators by solenoids
- F25B41/347—Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators by solenoids with the valve member being opened and closed cyclically, e.g. with pulse width modulation
-
- 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
- F25B2309/00—Gas cycle refrigeration machines
- F25B2309/06—Compression machines, plants or systems characterised by the refrigerant being carbon dioxide
-
- 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
- F25B2500/00—Problems to be solved
- F25B2500/12—Sound
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
Description
complètement car en particulier pour des différences de pression élevéescompletely because especially for high pressure differences
comme celles que l'on rencontre dans les installations de climatisation surtout celles dont l'agent frigorifique est du dioxyde de carbone, de l'agent frigorifique passe par l'intervalle de mouvement entre le tiroir de such as those found in air-conditioning plants, especially those where the refrigerating agent is carbon dioxide, the refrigerant passes through the interval of movement between
soupape et le boîtier. Ce débit volumique d'agent frigorifique peut être trop important pour fonctionner dans une installation de climatisation. De plus, aux faibles pressions, cette fuite ne permet pas d'établir une pression suffisante pour permettre à l'installation de climatisation de fonctionner dans une plage de fonctionnement avantageuse pour son rendement et la puissance. valve and the housing. This refrigerant volume flow rate may be too great to operate in an air conditioning system. In addition, at low pressures, this leakage does not provide sufficient pressure to allow the air conditioning system to operate in a range of operation advantageous for its performance and power.
Exposé et avantages de l'invention L'invention concerne une soupape de détente du type défini ci-dessus, caractérisée en ce que l'organe d'étranglement est un tiroir de soupape, cylindrique creux, dont une extrémité est fermée par une paroi frontale et dont la périphérie comporte au moins un perçage de commande coopérant avec au moins un perçage d'alimentation du boîtier de soupape et la face frontale ouverte du tiroir comporte un plateau de soupape relié par une tige de soupape au tiroir et tourné vers un siège de soupape entourant un orifice de sortie du boîtier de soupape, le perçage de corn- ::o mande étant disposé axialement par rapport au plateau de soupape pour que le perçage d'alimentation soit déjà fermé avant que le plateau ne s'appuie contre le siège de soupape. DESCRIPTION AND ADVANTAGES OF THE INVENTION The invention relates to an expansion valve of the type defined above, characterized in that the throttling element is a hollow cylindrical valve spool, one end of which is closed by a front wall. and whose periphery has at least one control bore cooperating with at least one supply bore of the valve housing and the open end face of the spool comprises a valve plate connected by a valve stem to the spool and facing a seat of valve surrounding an outlet of the valve housing, the control bore being disposed axially with respect to the valve plate so that the supply bore is already closed before the tray rests against the seat valve.
La combinaison d'un tiroir et d'une soupape à siège permet d'une part de fermer de manière étanche la soupape de détente et d'autre part d'utiliser le tiroir pour une ouverture proportionnelle, le plateau de soupape et le tiroir étant actionnés simultanément par le même action- neur. Le ressort de soupape peut charger le tiroir et ainsi en même temps le plateau dans le sens de l'ouverture ou dans le sens de la fermeture sui- vant que la soupape de détente doit être fermée ou ouverte alors que 3o l'actionneur n'est pas commandé. Il est important que le ressort de sou- pape et l'entraînement soient conçus et réglés l'un par rapport à l'autre pour dépasser les forces engendrées par les différences de pression appliquées au plateau de soupape. En outre, le tiroir doit déjà être fermé avant que la plateau de soupape ne ferme. Pour cela il faut avoir un chevauche- :35 ment suffisamment grand entre le tiroir et le perçage d'alimentation. On évite ainsi les vibrations et les bruits car comme l'intervalle annulaire du tiroir est pratiquement fermé, il ne peut plus y avoir de circulation autour du plateau de soupape qui ne risque pas de générer du bruit. Le plateau de soupape s'appuie pratiquement sans bruit sur le siège de soupape. The combination of a spool and a seat valve makes it possible on the one hand to seal the expansion valve and on the other hand to use the spool for a proportional opening, the valve plate and the spool being operated simultaneously by the same actuator. The valve spring can load the spool and thus at the same time the plate in the opening direction or in the closing direction, until the expansion valve is to be closed or opened while the actuator is not controlled. It is important that the valve spring and the drive are designed and adjusted relative to one another to exceed the forces generated by the pressure differences applied to the valve plate. In addition, the drawer must already be closed before the valve plate closes. For this purpose it is necessary to have a sufficiently large overlap between the drawer and the supply bore. This avoids vibrations and noise because as the annular gap of the drawer is substantially closed, there can be no circulation around the valve plate that is not likely to generate noise. The valve plate relies almost noiselessly on the valve seat.
Les surfaces d'étanchéité du siège de soupape peuvent utiliser les techniques d'étanchéité telles que des joints annulaires en caoutchouc, des joints métalliques ou autres sous leurs différentes réalisations. Du point de vue du bruit il est avantageux que le siège de soupape soit constitué par un élément élastique. The sealing surfaces of the valve seat can utilize sealing techniques such as rubber ring seals, metal seals or the like in their various embodiments. From the point of view of noise it is advantageous that the valve seat is constituted by an elastic element.
Il est en outre avantageux selon un développement de l'invention que l'actionneur soit un électroaimant dont l'induit agit par un 1 poussoir sur le tiroir ou la tige de soupape. L'électroaimant peut être commandé de préférence par un signal à largeur d'impulsion modulée qui déplace le tiroir comme soupape proportionnelle dans une certaine plage du signal et assure dans l'autre plage du signal, la fermeture de la sou- pape de détente. A partir d'un certain degré de fermeture, le tiroir et le plateau sont fermés automatiquement par la différence pression appliquée au siège de soupape. It is further advantageous according to a development of the invention that the actuator is an electromagnet whose armature acts by a pusher on the spool or the valve stem. The electromagnet may be controlled preferably by a modulated pulse width signal which moves the spool as a proportional valve within a certain range of the signal and provides in the other range of the signal the closing of the expansion valve. From a certain degree of closure, the drawer and the tray are automatically closed by the pressure difference applied to the valve seat.
Le mouvement axial du tiroir modifie le volume compris entre le boîtier de soupape et la paroi frontale du tiroir en forme de piston. Pour que la pression puisse se compenser des deux côtés de la paroi frontale, la paroi frontale comporte un perçage de compensation. The axial movement of the spool changes the volume between the valve housing and the front wall of the piston-shaped spool. So that the pressure can be compensated on both sides of the front wall, the front wall has a compensating hole.
Dans la plage de fermeture du plateau de soupape, celui-ci est soumis d'une part à la pression du côté haute pression et d'autre part à la pression du côté basse pression. Pour que les forces d'actionnement nécessaires exercées par l'électroaimant soient faibles, il faut que les poussées agissant sur le plateau de soupape et le tiroir soient au moins en partie compensées. Pour cela, le boîtier de soupape comporte une seconde chambre du côté tourné vers l'actionneur; cette chambre communique par une ouverture de liaison avec la première chambre. L'ouverture de liaison est fermée en même temps que l'ouverture de sortie par un second o plateau de soupape ayant la même surface active à l'état fermé que le premier plateau de soupape. Une conduite de liaison entre la première chambre de soupape et la sortie de la soupape de détente assure que la pression du côté basse pression agissant sur le premier plateau de sou-pape agisse dans la direction opposée sur le second plateau de soupape afin que les efforts qui en résultent se compensent. De même, les pressions agissant à l'intérieur de la première chambre de soupape sur le plateau de soupape se compensent dans la mesure où à l'état fermé les plateaux de soupape ont la même surface active. Si les surfaces actives sont différentes, il y aura une force résultant de cette différence, et agissant dans l'une ou l'autre direction. In the closing range of the valve plate, the latter is subjected on the one hand to the pressure on the high pressure side and on the other hand to the pressure on the low pressure side. In order for the necessary actuating forces exerted by the electromagnet to be low, the thrusts acting on the valve plate and the slide must be at least partly compensated. For this, the valve housing has a second chamber on the side facing the actuator; this chamber communicates through a connecting opening with the first chamber. The connection opening is closed at the same time as the outlet opening by a second valve plate having the same active surface in the closed state as the first valve plate. A connecting line between the first valve chamber and the expansion valve outlet ensures that the low pressure side pressure acting on the first poppet plate acts in the opposite direction on the second valve plate so that the forces resulting from it compensate each other. Likewise, the pressures acting inside the first valve chamber on the valve plate compensate for the fact that in the closed state the valve plates have the same active surface. If the active surfaces are different, there will be a force resulting from this difference, and acting in one or the other direction.
Dessins La présente invention sera décrite ci-après de manière plus 5 détaillée à l'aide d'exemples de réalisation représentés dans les dessins annexés dans lesquels: - la figure 1 est un schéma d'une installation de climatisation équipée d'une soupape de détente selon l'invention, - la figure 2 est une coupe longitudinale d'une soupape de détente selon o l'invention, - la figure 3 montre une variante de la figure 2, - la figure 4 montre une autre variante de la figure 2, - la figure 5 montre la caractéristique de la soupape d'expansion selon l'invention. Drawings The present invention will be described in more detail below with the aid of exemplary embodiments shown in the accompanying drawings, in which: FIG. 1 is a diagram of an air conditioning installation equipped with a valve of 2 is a longitudinal section of an expansion valve according to the invention; FIG. 3 shows a variant of FIG. 2; FIG. 4 shows another variant of FIG. 2; - Figure 5 shows the characteristic of the expansion valve according to the invention.
Description de modes de réalisation Description of embodiments
Dans une installation de climatisation 10, un compresseur 12 débite un agent frigorifique dans la direction de la flèche 14 en augmentant ainsi sa pression et sa température. Cet agent passe par un séparateur d'huile 32 puis dans un radiateur à gaz 16 dans lequel l'agent 2;o frigorifique cède à l'environnement une partie de la chaleur engendrée par la compression. Un ventilateur 20 débite à cet effet une veine d'air 18 de l'extérieur à travers le radiateur à gaz 16. Puis l'agent frigorifique passe par un échangeur de chaleur interne 22 dans lequel l'agent frigorifique qui revient vers le compresseur 12 reçoit de la chaleur. L'agent frigorifique re- froidi arrive par une conduite d'alimentation 34 dans une soupape de dé- tente 24 de manière à prélever de la chaleur par détente. La sortie 36 de la soupape de détente 24 est reliée à un évaporateur 26 dans lequel l'agent frigorifique prend de la chaleur venant de l'environnement. Une autre ma-chine soufflante 28 débite une veine d'air 30 à travers l'évaporateur 26. In an air conditioning installation 10, a compressor 12 delivers a refrigerant in the direction of the boom 14, thereby increasing its pressure and temperature. This agent passes through an oil separator 32 and then into a gas radiator 16 in which the refrigerating agent 2 cedes to the environment a portion of the heat generated by the compression. For this purpose, a fan 20 delivers an air stream 18 from outside through the gas radiator 16. Then the refrigerating agent passes through an internal heat exchanger 22 in which the refrigerant returns to the compressor 12 receives heat. The cooled refrigerant arrives via a supply line 34 into a check valve 24 so as to draw off heat by expansion. The outlet 36 of the expansion valve 24 is connected to an evaporator 26 in which the refrigerant takes heat from the environment. Another blower 28 delivers an air stream 30 through the evaporator 26.
3o Puis l'agent frigorifique passe de l'évaporateur 26 par l'échangeur de chaleur interne 22 pour revenir au côté admission du compresseur 12, ce qui boucle le circuit frigorifique 10. 3o Then the refrigerant passes from the evaporator 26 through the internal heat exchanger 22 to return to the intake side of the compressor 12, which loops the refrigerant circuit 10.
La soupape de détente 24 selon la figure 2 se compose d'un boîtier 38 équipé d'au moins une arrivée 34 dans sa périphérie et une sortie 36 dans un couvercle 40. Le couvercle ferme une chambre cylindri- que 50 du boîtier 38 de la soupape. La chambre 50 reçoit un tiroir de soupape 52, cylindrique creux, dont la périphérie comporte au moins un perçage de commande 54 coopérant avec un perçage d'alimentation 42 réalisé dans le boîtier 38 et réglant le débat à travers la soupape de détente 24. Une face frontale du tiroir 52 est fermée par une cloison 60 munie d'un perçage d'équilibrage de pression 58. Un ressort de soupape 56 charge le tiroir 52 dans le sens de l'ouverture en s'appuyant d'un côté contre le couvercle 40 et de l'autre contre la paroi frontale 60. Lorsque la soupape d'expansion 24 est en position ouverte, l'arrivée 34 est complète-ment ouverte à travers le perçage d'alimentation 42 et le perçage de commande 54. The expansion valve 24 according to FIG. 2 consists of a housing 38 equipped with at least one inlet 34 in its periphery and an outlet 36 in a cover 40. The cover closes a cylindrical chamber 50 of the housing 38 of the valve. The chamber 50 receives a hollow cylindrical valve spool 52, the periphery of which comprises at least one control hole 54 cooperating with a supply bore 42 formed in the casing 38 and regulating the debate through the expansion valve 24. front face of the slide 52 is closed by a partition 60 provided with a pressure equalizing bore 58. A valve spring 56 loads the slide 52 in the opening direction by pressing one side against the cover 40 and the other against the front wall 60. When the expansion valve 24 is in the open position, the inlet 34 is completely open through the supply bore 42 and the control bore 54.
La face frontale ouverture du tiroir 52 comporte un plateau de soupape 64 relié au tiroir 52 par une tige de soupape 62. Le plateau de soupape 64 est tourné du côté du perçage de sortie 44 du couvercle 40 débouchant dans la sortie 36. Le couvercle 40 du côté de la chambre de soupape 50 comporte une rainure annulaire 48 entourant le perçage de sortie 44. Cette rainure est garnie d'un joint rond en caoutchouc. The front face of the drawer 52 has a valve plate 64 connected to the drawer 52 by a valve stem 62. The valve plate 64 is turned on the side of the outlet bore 44 of the lid 40 opening into the outlet 36. The lid 40 the side of the valve chamber 50 has an annular groove 48 surrounding the outlet bore 44. This groove is provided with a round rubber seal.
Un actionneur 66, constitué par un électroaimant déplace le tiroir 52 et le plateau de soupape 64 de la même manière. L'agent frigorifique comporte un induit 70 déplacé par le champ magnétique d'une bobine électromagnétique 60 et agissant par l'intermédiaire d'un poussoir 72 sur le tiroir 52 ou la tige de soupape 62. Le poussoir 72 de l'induit peut 2.o être solidaire du tiroir 52 ou de la tige de soupape 62 ou s'appliquer librement contre ces pièces, le ressort de soupape 56 assurant le contact entre ces pièces. An actuator 66, consisting of an electromagnet moves the slide 52 and the valve plate 64 in the same manner. The refrigerating agent comprises an armature 70 displaced by the magnetic field of an electromagnetic coil 60 and acting via a pusher 72 on the slide 52 or the valve stem 62. The pusher 72 of the armature can .o be integral with the slide 52 or the valve stem 62 or freely apply against these parts, the valve spring 56 ensuring the contact between these parts.
La bobine électromagnétique 68 est commandée notamment par un signal à largeur d'impulsion modulée par une unité de commande non détaillée pour déplacer le tiroir 52 et le plateau de soupape 64 suivant une courbe caractéristique 88 (figure 5). On étrangle ainsi l'arrivée 34 du perçage d'alimentation 42 et du perçage de commande 54 jusqu'à ce que le tiroir 52 couvre le perçage d'alimentation 42 et que seulement un débit minimum passe par l'intervalle de mouvement entre le tiroir 52 et le bol- :3o tier 38 vers la sortie 36. Pendant cette phase, la bobine électromagnétique 68 est régulée pour que la caractéristique 88 de la soupape représentant la fonction associant la course de soupape (h) à l'amplitude S du signal en pourcentage, présente une plage proportionnelle 84 qui se poursuit par une plage de fermeture 86 après une plage transitoire. Dans la plage de :35 fermeture, le plateau de soupape 64 est appliqué contre le siège de soupape 76 et la force résultante exercée par le ressort de soupape 56 maintient l'actionneur 66 et la différence de pression entre l'arrivée 34 et la sortie 36. La soupape de détente 24 est fermée de manière étanche dans cette situation. Lorsque le plateau de soupape 64 vient contre le siège de soupape 76 cela n'engendre pas de bruit car le débit est très faible, ce qui évite la mise en oscillation. En outre, la matière élastique du joint annulaire 46 amortit le mouvement d'appui du plateau de soupape 64. En cas de mouvement axial du tiroir 52, le volume délimité entre la paroi frontale et le boîtier 38 varie. Le perçage de compensation 58 a.ssure une compensation correspondante en quantité et en pression. The electromagnetic coil 68 is controlled in particular by a pulse width signal modulated by a non-detailed control unit to move the slide valve 52 and the valve plate 64 according to a characteristic curve 88 (FIG. 5). Thus, the inlet 34 of the supply bore 42 and the control bore 54 is throttled until the spool 52 covers the supply bore 42 and only a minimum flow passes through the movement gap between the spool 52 and the bolt: tier 38 to the output 36. During this phase, the electromagnetic coil 68 is regulated so that the characteristic 88 of the valve representing the function associating the valve stroke (h) with the amplitude S of the signal as a percentage, has a proportional range 84 which continues with a closing range 86 after a transient range. In the closing range, the valve plate 64 is pressed against the valve seat 76 and the resultant force exerted by the valve spring 56 holds the actuator 66 and the pressure difference between the inlet 34 and the outlet 36. The expansion valve 24 is sealed in this situation. When the valve plate 64 comes against the valve seat 76 it does not generate noise because the flow is very low, which avoids the oscillation. In addition, the elastic material of the annular seal 46 dampens the bearing movement of the valve plate 64. In case of axial movement of the slide 52, the volume defined between the front wall and the housing 38 varies. The compensation bore 58 has a corresponding compensation in quantity and pressure.
La réalisation de la figure 2 correspond à une soupape de détente ouverte lorsque la bobine électromagnétique 68 est coupée du courant. En revanche, le mode de réalisation de la soupape de détente 24 de la figure 4 correspond à une soupape fermée lorsque la bobine électromagnétique 68 est coupée du courant de sorte qu'il faut mettre en oeuvre l'actionneur 66 pour ouvrir le tiroir 52 et le plateau de soupape 64 contre la force exercée par le ressort de soupape 56. The embodiment of FIG. 2 corresponds to an open expansion valve when the electromagnetic coil 68 is cut off from the current. On the other hand, the embodiment of the expansion valve 24 of FIG. 4 corresponds to a closed valve when the electromagnetic coil 68 is cut off from the current so that the actuator 66 must be used to open the drawer 52 and the valve plate 64 against the force exerted by the valve spring 56.
La variante de la figure 3 se distingue du mode de réalisation de la figure 2 par une seconde chambre de soupape 74 située du côté de l'actionneur. Cette chambre est reliée par une ouverture de liaison 80 à la première chambre de soupape 50. L'ouverture de liaison 80 est entourée du côté de l'actionneur par un siège dle soupape 76 qui peut être réalisé comme le siège de soupape 46 et coopérer avec un plateau de soupape 78. Celui-ci est relié au premier plateau 64 et ferme simultanément l'ouverture de liaison 80 lorsque le premier plateau de soupape 64 ferme le perçage de sortie 44. Les surfaces actives des plateaux de soupape 64, 78 sont identiques de sorte que les poussées agissant sur les plateaux de soupape 64, 78 se compensent réciproquement. Pour que les poussées exercées de l'extérieur sur les plateaux de soupape 64 et 78 se compensent également, le côté basse pression de la sortie 36 est relié à la seconde chambre de soupape 74 par une conduite de liaison 82. La compensation des poussées exercées sur le tiroir de soupape 52 ou les plateaux de sou-pape 64, 78 n'engendre que des forces d'actionnement faibles, ce qui per-met de dimensionner l'électroaimant 66 de manière réduite. The variant of Figure 3 differs from the embodiment of Figure 2 by a second valve chamber 74 located on the side of the actuator. This chamber is connected by a connecting opening 80 to the first valve chamber 50. The connecting opening 80 is surrounded on the actuator side by a valve seat 76 which can be made as the valve seat 46 and co-operate. with a valve plate 78. This is connected to the first plate 64 and simultaneously closes the connection opening 80 when the first valve plate 64 closes the outlet bore 44. The active surfaces of the valve plates 64, 78 are identical so that the thrusts acting on the valve plates 64, 78 compensate each other. In order for the externally exerted thrusts on the valve plates 64 and 78 to compensate for each other, the low pressure side of the outlet 36 is connected to the second valve chamber 74 via a connecting line 82. Compensation for exerted thrusts on the valve spool 52 or the supper platens 64, 78 engenders only weak actuating forces, which makes it possible to size the electromagnet 66 in a reduced manner.
NOMENCLATURENOMENCLATURE
installation de climatisation 12 compresseur 14 flèche 16 radiateur de gaz 18 veine d'air machine soufflante 22 échangeur de chaleur interne 24 soupape de détente 26 évaporateur 28 machine soufflante veine d'air 32 séparateur d'huile 34 arrivée 36 sortie 38 boîtier de soupape 40 couvercle 42 perçage d'alimentation 44 perçage de sortie 46 siège de soupape 48 rainure annulaire 50 chambre de soupape 52 tiroir de soupape 54 perçage de commande 56 ressort de soupape 58 perçage de compensation paroi frontale 62 tige de soupape 64 plateau de soupape 66 actionneur 68 bobine électromagnétique induit 72 poussoir d'induit 74 chambre de compensation 76 siège de soupape 78 plateau de soupape orifice de liaison 82 conduite de liaison 84 zone proportionnelle 86 plage de fermeture 88 courbe caractéristique de soupape h course de soupape S amplitude du signal io air conditioning system 12 compressor 14 boom 16 gas heater 18 air stream blowing machine 22 internal heat exchanger 24 expansion valve 26 evaporator 28 blower machine air stream 32 oil separator 34 inlet 36 outlet 38 valve housing 40 cover 42 supply bore 44 outlet bore 46 valve seat 48 annular groove 50 valve chamber 52 valve spool 54 control bore 56 valve spring 58 front wall trim hole 62 valve stem 64 valve plate 66 actuator 68 electromagnetic coil induced 72 armature plunger 74 compensation chamber 76 valve seat 78 valve plate connection port 82 connecting line 84 proportional zone 86 closing range 88 valve characteristic curve h valve stroke S signal amplitude io
Claims (5)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10354229A DE10354229A1 (en) | 2003-11-20 | 2003-11-20 | expansion valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2862738A1 true FR2862738A1 (en) | 2005-05-27 |
| FR2862738B1 FR2862738B1 (en) | 2006-09-29 |
Family
ID=34530275
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR0452674A Expired - Fee Related FR2862738B1 (en) | 2003-11-20 | 2004-11-18 | RELIEF VALVE |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2005156146A (en) |
| DE (1) | DE10354229A1 (en) |
| FR (1) | FR2862738B1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007118674A2 (en) * | 2006-04-12 | 2007-10-25 | Miro Gudzulic | On-off valve |
| US20210364094A1 (en) * | 2017-03-31 | 2021-11-25 | D.T. Davis Enterprises, Ltd. (D.B.A. Hovertech International) | Flow control valve |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006001142B3 (en) * | 2006-01-09 | 2007-06-28 | Thomas Magnete Gmbh | Air conditioning circuit control valve has a resilient axially sliding actuator with radial holes by which refrigerant may flow through bores in the housing according to its axial position |
| ES2531382T3 (en) * | 2012-09-14 | 2015-03-13 | Gce Holding Ab | Ignition Reduction Shutoff Valve |
| DE102014217375A1 (en) | 2014-09-01 | 2016-03-03 | Robert Bosch Gmbh | Electromagnetically actuated expansion valve |
| DE102017107296A1 (en) * | 2017-04-05 | 2018-10-11 | Hanon Systems | Shut-off valve and fluid shut-off device of a refrigerant compressor |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01155164A (en) * | 1987-09-01 | 1989-06-19 | Misawa Homes Co Ltd | Control valve |
| JPH09265322A (en) * | 1996-03-29 | 1997-10-07 | Osaka Gas Co Ltd | Valve structure for pressure governor |
| EP0945291A1 (en) | 1998-03-27 | 1999-09-29 | DaimlerChrysler AG | Means and method for heating and colling a utility space of a motor vehicle |
| EP1316750A1 (en) * | 2001-12-03 | 2003-06-04 | TGK Co., Ltd. | Proportional solenoid valve |
| DE10125789C1 (en) | 2001-05-26 | 2003-06-12 | Danfoss As | Valve arrangement with expansion valve |
| DE10219667A1 (en) * | 2002-05-02 | 2003-11-13 | Egelhof Fa Otto | Expansion valve with electronic controller, for motor vehicle air conditioning systems using carbon dioxide as coolant, has two throttle points in series, with the passage cross-section of second point adjustable to the first point |
-
2003
- 2003-11-20 DE DE10354229A patent/DE10354229A1/en not_active Withdrawn
-
2004
- 2004-11-01 JP JP2004318491A patent/JP2005156146A/en not_active Withdrawn
- 2004-11-18 FR FR0452674A patent/FR2862738B1/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01155164A (en) * | 1987-09-01 | 1989-06-19 | Misawa Homes Co Ltd | Control valve |
| JPH09265322A (en) * | 1996-03-29 | 1997-10-07 | Osaka Gas Co Ltd | Valve structure for pressure governor |
| EP0945291A1 (en) | 1998-03-27 | 1999-09-29 | DaimlerChrysler AG | Means and method for heating and colling a utility space of a motor vehicle |
| DE10125789C1 (en) | 2001-05-26 | 2003-06-12 | Danfoss As | Valve arrangement with expansion valve |
| EP1316750A1 (en) * | 2001-12-03 | 2003-06-04 | TGK Co., Ltd. | Proportional solenoid valve |
| DE10219667A1 (en) * | 2002-05-02 | 2003-11-13 | Egelhof Fa Otto | Expansion valve with electronic controller, for motor vehicle air conditioning systems using carbon dioxide as coolant, has two throttle points in series, with the passage cross-section of second point adjustable to the first point |
Non-Patent Citations (2)
| Title |
|---|
| PATENT ABSTRACTS OF JAPAN vol. 1998, no. 02 30 January 1998 (1998-01-30) * |
| PATENT ABSTRACTS OF JAPAN vol. 2000, no. 18 5 June 2001 (2001-06-05) * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007118674A2 (en) * | 2006-04-12 | 2007-10-25 | Miro Gudzulic | On-off valve |
| WO2007118674A3 (en) * | 2006-04-12 | 2007-12-13 | Miro Gudzulic | On-off valve |
| US20210364094A1 (en) * | 2017-03-31 | 2021-11-25 | D.T. Davis Enterprises, Ltd. (D.B.A. Hovertech International) | Flow control valve |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2862738B1 (en) | 2006-09-29 |
| JP2005156146A (en) | 2005-06-16 |
| DE10354229A1 (en) | 2005-06-23 |
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| ST | Notification of lapse |
Effective date: 20120731 |