DE2510495A1 - WING CELL MACHINE - Google Patents

Description

R. 2603
6.2.1975 Wd / Ht

Attachment to
Patent and
Utility model registration

ROBERT BOSCH GMBH, 7 Stuttgart t

Vane machine

The invention relates to a vane machine (pump or motor) with approximately radial slots of a sliding rotor arranged wings, the outer edges of which slide on a stroke-generating surface.

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ORIGINAL INSPECTEE

In such known machines, the slots are only so far worked into the rotor that the thereby formed Segments at the bottom of the slots are not weakened. This has the consequence that the wings are also due to the shallow slot depth cannot perform a large stroke, which means that the machines at least build voluminous in diameter.

It is an object of the invention to provide a vane machine of the type mentioned in the opening paragraph, which is compact and with respect to Their dimensions provide a large delivery rate.

This is achieved according to the invention in that each Slot a reinforcing body extending over its entire thickness, but only over part of its width and height is firmly arranged.

In this way the slots can be worked deep into the rotor without the resulting segments connected only by a relatively weak remaining web break apart under high stress, d. H. brace the reinforcement bodies and support the segments from one another.

An embodiment of the invention is shown in the drawing. This shows in

1 shows a longitudinal section through a vane pump; FIG. 2 shows a cross section along II-II according to FIG. 1; 3 shows an individual part in a perspective illustration.

The housing of the vane pump - hereinafter referred to as the pump for short - consists of a housing middle part 10 and two of these Laterally closing covers 11, 12. In the middle part 10, a continuous recess 13 of approximately oval shape is formed. the Recess 13 is sealed to the outside by sealing rings 14, 15. -

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A rotor 16, which is part of a drive shaft 17, is arranged in the middle part 10. The drive shaft is in aligned bores 18, 19 of the cover 11, 12 mounted; the bore 18 is designed as a blind bore, the bore 19 is continuous. Through this the drive shaft penetrates to the outside.

The housing parts are held together by screws 20 and nuts 21 and fixed in alignment by cylindrical pins 23 arranged in bores 22.

A larger number of radially extending slots 2k are formed in the rotor 16 and extend up to close to the drive shaft. In this way, segments 25 are created between two adjacent slots which are only slightly thick at the bottom of the slots. As a result, there could be a risk that the segments will break apart under high loads. In order to prevent this, a reinforcing body 26 is fixedly arranged in each slot, preferably by being pressed in. The reinforcement body 26 is cuboid, its thickness corresponds to the thickness of the slot, its width is less than that of the rotor and its height is approximately half the slot depth.

In each reinforcement body 26 two through bores 27 _S 28 are formed, which run in the longitudinal direction of the slot and parallel to one another. In each bore a spring 29 or 30 is arranged, one end of which rests against the bottom of the slot, its opposite end on the end face 31 of a recess 32 of the wing 33j which is slidably guided in the slot 2k. The recess is rectangular, its width is slightly greater than that of the reinforcement body 26, its depth is slightly greater than the height of a reinforcement body. In this way, the reinforcing body dips into the recess 32 on the inward stroke of the wings. The purpose of the springs 29, 30 is to push the wings 33 outwards. The slots 2k have a slight widening 2k ¹ _{s at the bottom}

⁺ at its bottom ''

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for the reason that the reinforcing bodies also sit securely on the bottom of the slots.

The formation of such deep slots has the significant advantage that the vanes 33 can perform a very large stroke, which in turn has the consequence that the pump can be kept smaller in diameter and still provides a high delivery rate Favors recess 13, which allows two suction chambers 3 ¹ I, 35 and two pressure chambers 36, 37 to form the pump with two flows. These spaces are formed in the middle part 10. These spaces are not discussed further because they are well known and not essential to the invention. From the spaces 3 ^, 35 two lines or channels 38, 39 lead to a common suction line HO, while from the spaces 36, 37 two lines or channels H1, H2 lead to a common pressure line 43. Since the direction of rotation of the rotor l6 is reversible, the suction chambers can also be pressure chambers, and vice versa,

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Claims (5)

Expectations 1.) Vane machine (pump or motor) with approximately radial Slits of a rotor slidably arranged blades, the outer edges of which slide on a stroke-generating surface, thereby characterized in that at the bottom of each slot (24) one extends over its entire thickness, but only over part of it Width and height extending reinforcing body (26) is fixedly arranged. 2. Machine according to claim 1, characterized in that the reinforcing body (26) is cuboid and pressed into the slot. 3. Machine according to claim 1 and / or 2, characterized _s that formed in the amplifier body (26) has two radially extending bores (27, 28) are, where springs are arranged (29, 30) responsive to a the wings (33) exert an outward pushing force. 4. Machine according to one of claims 1 - 3s, characterized in that that at the inner end of the wing (33) an approximately rectangular recess (32) is formed into which the reinforcement body can be immersed with play. 609840 / 04OD - 6 - row : '■ * ■ ■ - 5. Machine according to one of claims 1-4, characterized in that the slots (24) close to the diameter of the . ■ .i'vV
Reach the drive shaft (17) or a , '. centric bore that receives the drive shaft. ..; _V 609840 / 040Q Blank page