DE6901683U - EVACUATION AND FILLING DEVICE - Google Patents

Description

OR-INO. OIPL.'tNO. M. SC. DIPL, .PMYS. DR.DIPL ^^ HYS-,

HÖGER - LEGAL RIGHT- GRIESSBACH - HAECKER

PATENT LAWYERS IN STUTTGART

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Christof Fischer company

7000 Stuttgart ^ Bad Cannstatt,

Reichenhallerstr. 55-59.

Evacuation and filling device

BIe foundation "relates to a unit designed as a structural unit Evacuation and filling device for filling and maintaining a refrigerant system with a base plate and an angle guide » support bracket attached at one end to the base plate, Which are the others working on, directly or indirectly Ropes of the unit including filling cylinder, pump lait iarferleosnotor, boiler and regulators and connection lines are held *

huss aas refrigerant system of a refrigeration machine after assembly or after the repair is filled with refrigerant ifecrdeii. For this it is necessary to remove air and water vapor from the system by evacuating with a vacuum ρτζπϊρβ. Then χτϊτα a certain amount of coldness is introduced into the system. The exact dosage is particularly important ~ o & ± small refrigeration systems, Han -verwende "& de snail" usually Jiierfiir a graduated fill -

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which enables precise filling. After pulling, the working pressures of the refrigeration system on the suction side are shown and print side are checked, including to make sure that the system is working properly. There are still corresponding Measuring devices required.

Including the cumbersome handling and alternating connection dex to simplify the work equipment mentioned above Developed in various designs apparatus that combine these individual tools in one unit. This well-known unit is! made transportable; the The connection of the Sinael devices is oriented through lines the desired workflow.

In a known embodiment of such an evacuation and filling device, all components of the system such as evacuation pump, drive motor and oil cylinder, as well as the associated connection lines, measuring and control fittings, are arranged on a base plate equipped with a rag bracket, thus forming a lightweight; transportable construction hext united. This arrangement is favorable insofar as the handlebar is designed angularly and allows easy gripping and transport on its horizontal leg. Until this known design is fully integrated, however, it is particularly unfavorable in terms of production engineering and stability, since a long ¥ -föraiger fastening bracket is provided as a support element for 5? Carrying bracket overlaps »gül Izylintier ubcI boiler fittings are attached to these mounting brackets. Badureii results in a comparatively bulky xmä. ax-fit construction.

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The invention is based on the object of creating an evacuating and filling device designed as a structural unit, the parts of which are simply, firmly and rigidly assembled with one another in terms of manufacturing technology and are mutually supportive on the upper part of the filling cylinder and the lower part of the pul! cylinder are fixed to the base plate in such a way "that the filling cylinder supporting Kon _T is struktionselenent and these parts form a kind of frame. This frame-like construction results in a mutual holding of the base plate, support bracket and filling cylinder in such a way that the firm and rigid connection of these parts is significantly promoted and they are particularly suitable for safely carrying other parts.

It is beneficial if the other end of the carrying handle is not directly but is attached to the upper part of the filling cylinder with the aid of an intermediate member. This intermediate member can, for example be an "angle piece, the first leg of which on the filling cylinder ohert.eil and the second leg of the support bracket end is attached

A particularly advantageous construction is obtained when the second leg is used to form an L-shaped angle piece is elongated and protrudes downwards. Such an extended, second leg can be attached to it as an additional Support member are used.

This support member is used in a favorable manner to us Faucet enteile to wear. It is advantageous if a special fixture plate provided srLrä, the gut. at the vertical SragSugslara xmd aa zssitea long vision— 3cel of the i-hair dryer elbow can be fastened and

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is kept so secure and stiff.

Faucet parts can, then at the front and optionally also attached to the back of the instrument panel

that is
be, and / Ln advantageous in such a way that they do not exceed the dimensions of the base plate of the device when viewed from above and thus the entire device is given a particularly compact and compact shape.

It is particularly advantageous if on the front of the dashboard the majority of the indicating instruments and valves are arranged for easy operation.

A valve and pressure gauge unit has also proven to be beneficial for connection to the suction and / or pressure side of the refrigerant system as a closed unit to be arranged on the front of the dashboard and fastened so that the connection point downwards and at least partially protrude beyond the lower edge of the valve plate, so that now the connection of an Eältemittelsystem can be carried out in a particularly simple manner via appropriate hoses. This arrangement enables; A grouping of all essential barriers and measuring devices in the narrowest space.

A leak test of the refrigeration circuit is included in every pail erf οι ^ erlich. The presence of leaks can especially be can be proven quickly and easily if the quay tekreislauf is evacuated and shut off and a precise vacuum gauge reads whether the vacuum exists ^ remains. Even in the presence of very small leaks— hexten., the vacuum drops noticeably.

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the vacuum gauge is attached within this system. The erixnäungsgesäss was created by a special arrangement so that the shut-off valve is close to the vacuum pump and between this and the outer connection piece of the device, the vacuum knife is attached; preferably who—

N aJJLe parts are presented on the front of the era plaques.

Other features and advantages of the invention result from sicii the following description in connection with äer Drawing showing an embodiment of the invention holds. In the drawing show:

Fig.l is a perspective front view of the Svakuier-

and filling device according to the invention, FIG. 2 shows a perspective rear view of the device according to Pig.l.

With 10 a base plate is designated, which can be set up with cushions 12 on a base. On the generally right side of the base plate, a filling cylinder 16 is arranged standing on support columns 14. Pig. 1 also shows a filling valve 18 with a connection 19 for charging and emptying the cylinder with liquid refrigerant and a heating switch 20 which switches a heating device (not shown) for the contents of the filling cylinder 16 on and off The face of the filling cylinder 16 is a filling cylinder manometer.22 and a filling valve 24 for gaseous refrigerant.

Furthermore, a right-angled curved support bracket 30 is provided, which has an approximately vertical arm 32, the end of which

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TM to obtain the described possibility of verifying the authenticity - I

Hold ί, the vacuum pump is shut off by the refrigerant circuit I

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de is attached to the left side of the base plate 10 ".
The Sragmigel also has an essentially “square” £ -π π 34, which has a handle 36 on its middle part
wearing. At the free end 38 of the arm 34 is attached as a whole with 40 designated elbow piece ", gas has a short leg 42 and a long leg 44" The attachment point of the end 38 of the support length is close to the bend between The free end of the leg 42 is preferably fastened by means of screws to the upper part of the PüllZylinders, for example to an upper connection plate 48. In addition, an ArHaImxenplatte 50 is provided, which has an end plate 52 and planes 54 and 56. These planes are, preferably
Bit help of screws, once on the vertical arm 32 of the
Sragfcügels 30 and on the other hand on the long leg 44 of the
Angle piece 40 is rigidly attached, so that this armature plate 50 is now capable of measuring and regulating instruments
as well as carrying cables and keeping them safe.

Jjl of the end plate 52 is a valve and manometer unit 57 attached, which has a suction manometer 58, a pressure manometer 60, and also corresponding valves that can be operated by handles 62 and 64, respectively. At the lower part of the aggregate is a Anschlus clip 66 tin for low pressure UNJ Ansehlussstutzen 68 for high pressure and also still closed by a Schiaubkappe aeration nozzle 70 attached protruding all over the lower edge 72 of the end plate 52 and thus for the connection of a Kältemittelsysteas or of its The connection hoses are easily accessible.

There is also an evacuator 76 on the front of the faceplate and a pressure gauge shut-off valve 74 is arranged.

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Above the hanometer shut-off valve 74 there is a »a Yaku knife 78.

The connecting lines are not shouted Den and are marked as a whole with 80 ".

On the base plate 10, between the 16 "and the vertical arm 32 of the support bracket 30, a Ya-3t * pump pump 82 and an electric motor 84 driving this pump are arranged. The latter" is located on a support housing 86 1 in which a pump switch is also located 88 is arranged.

The mode of operation of the evacuation and flushing device and its Use are explained in more detail in particular with reference to Pig.3.

The kill cylinder 16 is evacuated by the vacuum pump 82 and filled with refrigerant via connection 19. The Anscliliis nozzles 66 and 68 are attached to the suction side and the pressure side of the refrigeration system by means of flexible flushing hoses connected. The refrigeration system is evacuated and the quality of the vacuum is read on the vacuum gauge 78. There are those Purge valves 18 and 24 on the cylinder closed.

By shutting off the evacuation valve 76 and thus by disconnecting the vacuum pump from the system, the tightness of the Refrigeration system checked. The vacuum gauge 78 must hold the level reached and must not fall off.

The interlude is anticipated by opening the filling valve 24, then evacuation is carried out again as described above.

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The refrigeration system is filled with refrigerant as a liquid UbeT the pressure side with filling valve 18 and handle 64 zt & ex gaseous via the suction side with filling valve 24 and handle 62. The amount of refrigerant charged can be read off precisely.

ι Each, "finished flushing process you can see the working pressures of the

Check the refrigeration system with manometers 58 and 60.

Claims (1)

Protection claims; 1. Evacuation and filling device designed as a structural unit for filling and maintaining a refrigerant system with a base plate and an angular, with a End of the bracket attached to the base plate, on wel— ^f _ "eiher" Healing the other parts of the assembly are! directly or indirectly held einsehliesslich filling cylinder pump with drive motor, measurement and control valves and Yerbindungsleitungen, characterized dalureh that the other end (38) of the bracket (30) on the upper part (48 ) of the filling cylinder (16) "and the lower part of the filling cylinder '? (36) are attached to the base plate (10) in such a way that the filling cylinder is a structural element carrying the load and the base plate, support bracket and filling cylinder together Jt form a jarb stalks. 2 · evacuation and filling device according to claim 1, characterized in that » that the other end of the support bracket (38) with the help of an intermediate member (40) on the upper part of the filling cylinder (48) is attached. 3 evacuation and filling device according to claim 2, characterized in that that the intermediate member is an angle piece (40), the first leg (42) of which aa filling cylinder upper part (48) and whose second leg (44) is attached to the other end of the support bracket (38). ♦ · Evacuation and! Filling device according Ansprtich 3 * * gekennzeichrtöt characterized in that the second swing (44) forming a ztir £ = försiigsÄ Wlskssleiüsks (40) v ^ is rlSsgsrt th protrudes · - IÖ - 69 0168a I 'I' II '/ ■ A 36 918 h h - ta 1/13/69 - 10 - 5. evacuation and filling device according to claim 4, characterized in that that a fitting plate (50) is provided, which is attached to the approximately vertical bracket leg (32) and on the second long leg (44) of the L-shaped elbow (40) "is attached. 6 · evacuation and filling device according to claim 5, characterized in that that the valve plate (50) on the front and / or rear side carries valve parts (57,74,76,78), 7. evacuation and filling device according to claim 5 or 6, characterized in that on the front of the A-rmaturen— Plate (50) a number of indicating instruments (58, 60, 78) and valves (74, 76) are arranged. 8. evacuation and filling device according to claim 7, characterized in that that on the front of the valve plate (50) a valve and pressure gauge unit (57) for connection is arranged as a structural unit on the suction and / or pressure side of the coolant system and is "fastened" in such a way that the Connection piece (66,68) downwards and at least partially ■ v / iron over the lower edge (72) of the valve plate (50) protrude. 9 · Evacuation and filling device with a vacuum gauge for measuring the vacuum and connections for the coolant system according to one of the preceding claims, characterized in that a preferably front on the valve plate (50) arranged evacuation valve (78) to shut off the line (80) leading to the pump (82) is provided and the vacuum gauge (78) between this vacuum valve (76) and the connections (66) and (68) is arranged.