DE948420C - Temperature controlled injection valve for automatic refrigeration systems - Google Patents
Temperature controlled injection valve for automatic refrigeration systemsInfo
- Publication number
- DE948420C DE948420C DEP27058A DEP0027058A DE948420C DE 948420 C DE948420 C DE 948420C DE P27058 A DEP27058 A DE P27058A DE P0027058 A DEP0027058 A DE P0027058A DE 948420 C DE948420 C DE 948420C
- Authority
- DE
- Germany
- Prior art keywords
- nozzle needle
- membrane
- nozzle
- refrigeration systems
- injection valve
- 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
Links
- 238000002347 injection Methods 0.000 title claims description 4
- 239000007924 injection Substances 0.000 title claims description 4
- 238000005057 refrigeration Methods 0.000 title claims description 4
- 239000012528 membrane Substances 0.000 claims description 8
- 239000010437 gem Substances 0.000 claims description 4
- 229910001751 gemstone Inorganic materials 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 241001076195 Lampsilis ovata Species 0.000 claims 1
- 239000007788 liquid Substances 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 239000010959 steel Substances 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
- 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
- F25B41/33—Expansion valves with the valve member being actuated by the fluid pressure, e.g. by the pressure of the refrigerant
- F25B41/335—Expansion valves with the valve member being actuated by the fluid pressure, e.g. by the pressure of the refrigerant via diaphragms
-
- 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
- F25B2500/03—Cavitations
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Temperature-Responsive Valves (AREA)
Description
Die Erfindung betrifft ein temperaturgesteuertes Einspritzventil für automatische Kälteanlagen mit einem Übertragungsorgan zwischen Membran und Düsennadel, das die Membranbewegung vergrößert auf die Düsennadel überträgt. Bekanntlich ist es für die einwandfreie Arbeitsweise des Ventils wichtig, neben der erforderlichen Empfindlichkeit die Düsennadel und ihren Sitz korrosions- und kavitationsfrei zu halten. Gerade automatische Einspritzventile in Kälteanlagen gefährden den Betrieb der ganzen Anlage, wenn das Ventil nicht hermetisch schließt und im Stillstand der Anlage Flüssigkeit in den Verdampfer gelangen kann. Düsennadeln aus Stahl, selbst aus gehärtetem oder vergütetem Material, weisen erfahrungsgemäß mit der Zeit Kavitationseinflüsse auf, die das Ventil undicht machen.The invention relates to a temperature-controlled injection valve for automatic refrigeration systems with a transmission element between the membrane and the nozzle needle, that transfers the diaphragm movement to the nozzle needle. It is well known it is important for the proper functioning of the valve, in addition to the necessary Sensitivity to the nozzle needle and its seat free of corrosion and cavitation keep. Automatic injection valves in refrigeration systems in particular endanger their operation of the entire system if the valve does not close hermetically and the System liquid can get into the evaporator. Steel nozzle needles, even made of hardened or tempered material, experience has shown that they have cavitation influences over time that make the valve leak.
Erfindungsgemäß wird zur Vermeidung der genannten Nachteile vorgeschlagen, die Spitze der Düsennadel oder auch ihren Sitz aus Halbedelstein herzustellen. Vorteilhaft wird weiter zum Zweck einer feinfühligen Regulierung die Düsennadel über eine axial bewegliche Federstütze mit einer Regulierspindel verbunden und zwischen der Membran und dem die Membranbewegung vergrößert auf die Düsennadel übertragenden Winkelhebel eine Einstellschraube eingeschaltet.According to the invention it is proposed to avoid the disadvantages mentioned, to make the tip of the nozzle needle or its seat from semi-precious stone. Advantageous the nozzle needle is also used axially for the purpose of sensitive regulation movable spring support connected to a regulating spindle and between the diaphragm and the angle lever which transfers the diaphragm movement to the nozzle needle in an enlarged manner an adjusting screw switched on.
Die Vorteile der Erfindung bestehen in einer Erhöhung der Lebensdauer des Ventils um ein Mehrfaches und damit in einer wesentlichen Steigerung der Betriebssicherheit und der Lebensdauer der ganzen Anlage.The advantages of the invention consist in an increase in the service life of the valve many times over and thus a significant increase in operational safety and the service life of the entire system.
In der nachfolgenden Beschreibung ist die Erfindung an Hand eines Ausführungsbeispieles ausführlich beschrieben. Die Zeichnung zeigt das Ausführungsbeispiel im Schnitt.In the following description, the invention is based on one Embodiment described in detail. The drawing shows the embodiment on average.
Das gezeichnete Beispiel besitzt auf einem Gehäuse i eine Mernbrankammer 2, deren Membran 3 von einem vertikal verschiebbar geführten Teller 4 gestützt wird, welcher unter Vermittlung einer unten in einer Spitze endigenden Einstellschraube 5 auf dem horizontalen Arm 7' eines auf einer Drehachse 6 gelagerten Winkelhebels (Übertragungsorgan) abgestützt ist. Der nach unten ragende Arm 7 des Winkelhebels ist länger als der horizontale Arm 7', so daß die Membranbewegung vergrößert auf die an seinem unteren Ende angeordnete Düsennadel 8 übertragen wird. Die Düsennadel 8 wirkt mit einer Düse 9 zusammen, welcher ein Filter io vorgeschaltet ist. Die Düsennadel 8 steht über einen Satz von Druckfedern 11, 12 und eine axial bewegliche Federstütze 13 mit einer Regulierspindel 14 in Verbindung.The example shown has a membrane chamber 2 on a housing i, the membrane 3 of which is supported by a vertically displaceable plate 4 which, with the mediation of an adjusting screw 5 ending in a point at the bottom, is mounted on the horizontal arm 7 'of an angle lever mounted on a pivot 6 ( Transmission organ) is supported. The downwardly protruding arm 7 of the angle lever is longer than the horizontal arm 7 ', so that the diaphragm movement is transmitted enlarged to the nozzle needle 8 arranged at its lower end. The nozzle needle 8 interacts with a nozzle 9, which is preceded by a filter io. The nozzle needle 8 communicates through a set of compression springs 11, 12 and an axially movable spring support 1 3 with a regulating spindle 14 in connection.
Die Membrankammer 2 wird durch eine Rohrleitung 15 in bekannter Weise mit einem Temperaturfühler (nicht gezeichnet), der Düsenstutzen 16 mit der Zuleitung 17 für unter hohem Druck stehendes flüssiges Kältemittel und der Austrittsstutzen 18 mit einer zum Verdampfer (nicht dargestellt) führenden Leitung i9 in Verbindung gebracht. Der auf die obere Seite der Membran 3 wirkende Fühler bewirkt bei Temperaturschwankungen eine Auf-oder Abwärtsbewegung der Membran 3. Diese Bewegung wird durch den Winkelhebel mehrfach vergrößert auf die Düsennadel übertragen. Hierdurch kann bekanntlich die Empfindlichkeit des Ventils erheblich gesteigert werden.The membrane chamber 2 is through a pipe 15 in a known manner with a temperature sensor (not shown), the nozzle connector 16 with the supply line 17 for liquid refrigerant under high pressure and the outlet nozzle 18 with a line i9 leading to the evaporator (not shown) brought. The sensor acting on the upper side of the membrane 3 causes temperature fluctuations an upward or downward movement of the diaphragm 3. This movement is controlled by the bell crank enlarged several times and transferred to the nozzle needle. As a result, as is well known, the Sensitivity of the valve can be increased significantly.
Die Spitze der Düsennadel oder auch der den Sitz derselben aufweisende Teil der Düse werden aus Halbedelstein, wie z. B. Achat, hergestellt.The tip of the nozzle needle or the one that has the same seat Part of the nozzle are made of semi-precious stone, such as. B. agate.
Claims (4)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH948420X | 1945-09-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE948420C true DE948420C (en) | 1956-08-30 |
Family
ID=4549879
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEP27058A Expired DE948420C (en) | 1945-09-04 | 1948-12-28 | Temperature controlled injection valve for automatic refrigeration systems |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE948420C (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR617942A (en) * | 1925-07-30 | 1927-02-28 | Lightfoot Refrigeration Compan | Improvements to refrigeration machines |
| US2291503A (en) * | 1938-09-14 | 1942-07-28 | Automatic Control Corp | Control |
| US2291898A (en) * | 1939-05-05 | 1942-08-04 | Honeywell Regulator Co | Expansion valve |
-
1948
- 1948-12-28 DE DEP27058A patent/DE948420C/en not_active Expired
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR617942A (en) * | 1925-07-30 | 1927-02-28 | Lightfoot Refrigeration Compan | Improvements to refrigeration machines |
| US2291503A (en) * | 1938-09-14 | 1942-07-28 | Automatic Control Corp | Control |
| US2291898A (en) * | 1939-05-05 | 1942-08-04 | Honeywell Regulator Co | Expansion valve |
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