DK142556B - HERMETIC COVERED COOL COMPRESSOR - Google Patents

Description

142556

The invention relates to a hermetically-enclosed refrigeration compressor having at least two pressure silencer chambers formed from adjacent plate mold members and fastened to the cylinder by at least one plate mold part.

5 German patent 1,501,031 discloses a hermetic compressor in which the cylinder head and the silencer chamber are combined with each other and where at least two silencer chambers are made of tin parts, sit on a plate which is connected to the cylinder head and where the two silencer chambers are connected 10 each other by means of choke channels. Such a muffler device is securely fastened and pivot-free when mounted on the cylinder. It can therefore also be placed in a relatively narrow gap between the capsule and the motor, but it presents difficulties in making the two-chamber silencer compression even larger and possibly reducing the cut-off frequency.

SUMMARY OF THE INVENTION It is an object of the invention to provide an arrangement of the two or more silencer chambers in a refrigerator of the kind described above, so that, at given external dimensions of the silencer, an optimal utilization of the volume network is possible.

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This is achieved according to the invention by the fact that the pressure muffler chambers lie with the bases facing each other on either side of the plate and that their heights perpendicular thereto are small relative to the dimensions of the bases.

Thus, the silencer chambers are designed to be extremely flat and placed directly against each other. Their height is generally less than one third of the minimum surface area dimensions. The sum of 5 of the individual heights need not be greater than the height of previously proposed silencer chambers. Despite the low height, a sufficient chamber volume can be obtained due to the large base surface. The individual chambers completely fill the space available, in contrast to the configuration in which the chambers are arranged in succession between two shaped plate parts, thereby necessarily losing space between the side walls of the chambers.

In a vertical shaft chiller and top horizontal cylinder, it is desirable that a pressure muffler chamber be disposed substantially below the cylinder head and another muffler chamber substantially below the cylinder or valve plate. Since there must be space in the capsule between cylinder and cylinder head, the space below is also available for the silencer chambers.

20 When the plates in the stator tin package have cuts for saving reasons, the pressure silencer chambers may be arranged in the cut between the stator tin package and the capsule.

A further simplification is obtained when the muffler chambers with the common center plate together with an adjacent channel plate form at least the throttle channels which are to connect the two muffler chambers. In addition, it is possible to extend the center plate, channel plate and the outer vaulted plate to form the cylinder head.

A further increase in volume is obtained by the strip-shaped pressure valve body being disposed obliquely in the cylinder head between two suction valve chambers and its fastening means under the one suction valve chamber, and the outer pressure silencer chamber having an extension under the second suction valve chamber.

In order to be able to simply connect the pressure tube to the series coupled pressure silencer chamber, the outer vaulted plate member 5 may have a flat portion lying against the center plate, into which is inserted a pressure tube projecting with its mouth into the inner pressure silencer chamber.

For the manufacture of the described building parts, it is recommended that one of the plate mold members at the rim has bent grooves which serve as guide and fixation in the assembly of the plate mold parts. Hereby, the center plate can carry lugs which are alternately folded to both sides. The other plate parts may have incisions into which the lugs project. The sheet metal thus assembled is finally soldered together in a soldering furnace, 15 under which they are either held together by means of an externally operated mechanical clamping device or provisionally assembled by means of the lasers.

The invention is explained in more detail below in accordance with the exemplary embodiment shown in the drawing, which shows in FIG. 1 is a view of a building part according to the invention containing the silencer chambers and the cylinder head; FIG. 2 is a partial longitudinal section through a cooling machine according to the invention along the line A-A in FIG. 1, FIG. 3 is a side view of the construction part of FIG. 1 from the outside and FIG. 4 is a front view of this component.

In a punctured hinted capsule a cooling machine is hermetically enclosed. A motor bearing member 2, on the one hand, contains a cylinder bore 3 with the piston 4 and carries on it

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On the other hand, the stator tin package 5 of the motor with the stator winding 6 as well as in the bearing rotor of the motor 7 not shown. A normal valve plate 9 is disposed on the front of the cylinder chamber.

Attached to the valve plate is a structural member 10 which forms a cylinder head 11 and a silencer 12.

The muffler has two interconnected chambers 13 and 10 14 which are connected to each other over a choke 15.

The cylinder head 11 has a pressure valve chamber 16 and two suction chambers 17 and 18, of which in FIG. 1 can see the entrance openings and in FIG. 2 a side wall. Outside of the muffler chambers 13 and 14, a gas powder chamber 19 and 15 20 are provided for each.

A center plate 21 together with a duct plate 22 forms passage ducts and choke channels 15. Together with an outer vaulted plate 23, the pressure silencer chamber 13 is formed and together with an inner vaulted plate piece 24 the pressure silencer 20 14. The plate walls 25 and 26 which lie only with a narrow edge on the plate pieces 23 and 24, together with these gas cushion spaces 19 and 20, and at their lower end may have breakthrough 27 through which the refrigerant gas can flow into the compartments.

The center plate 21, the channel plate 22 and the outer vaulted plate piece 23 are extended upwardly to form the cylinder head 11. In the middle plate are breakthroughs 28, 29 leading into the suction valve chambers 17 and 18, as well as a breakthrough 30 leading into the pressure valve chamber. 16. The duct 30 plates separate pressure valve chamber and suction valve chamber, in the pressure valve chamber, a strip-shaped pressure valve piece 31 is inclined so that its fastening means 32 are located below the suction valve chamber 18. As seen in FIG. 3, the space under the second suction valve chamber 17 is utilized to accommodate an extension 33 of the silencer chamber 13.

The suction gas is fed into the suction valve chamber 17, 18 and 5 over the breakthrough in the valve plate 9 and from there is introduced into the cylinder over the suction valve. The pressurized gases exiting the cylinder compartment reach one on one side between the center plate 21 and the duct plate 22, which on the other side of the plate piece 23 formed pressure line sections 34 into the pressure sound-damper chamber 13. and further into the pressure silencer chamber 14. A pressure relief tube 35 is connected, for which purpose the plate members 23 and 25 have an enlarged flat rim portion 36 through which the mouth of the pressure tube 35 is introduced into the pressure chamber 14.

The two muffler chambers 13 and 14 are very flat, considering their surface. They therefore make optimal use of the available volume.

For easier assembly, lugs 37, 38 are arranged on the rim 20 of the center plate 21, which are alternately folded to both sides. The other plate parts have incisions 39 which are adapted to these lugs. Therefore, all plate parts 26, 24, 21, 22, 23, 25 can be easily assembled in the correct relation to each other.

The structure thus obtained can be provisionally held together by riveting the lasers or by a mechanical clamping device and finally fixed by soldering in a soldering furnace.

Claims (5)

142656 A hermetically-enclosed refrigeration compressor with at least two pressure silencer chambers formed by superposed shaped plate members and secured to the cylinder by means of a plate, characterized in that the pressure silencer chambers (13, 14) lie with the base faces on each other. each side of the plate (21) and their heights perpendicular thereto are small relative to the dimensions of the base surfaces. Cooling machine according to Claim 1, with a vertical shaft and top 10 horizontal cylinder, characterized in that a pressure muffler chamber is arranged substantially below the cylinder head and another pressure muffler chamber substantially below the cylinder or its valve plate. 15 Cooling machine according to claim 1 or 2, wherein the plates in the stator tin package have cuts for reasons of saving, characterized in that the pressure silencer chambers (13, 14) are arranged in the cut between the stator tin package (5) and the capsule (1). 20 Cooling machine according to one of Claims 1 to 3, characterized in that the pressure silencer chambers and the common center plate (21) together with an adjacent duct plate (22) form at least the throttle channels (15) which are to connect the two silencer chambers . 25 Cooling machine according to claims 1-4, characterized in that the center plate (21), the duct plate (22) and the plate piece (23) defining the chamber located at the outer surface of the plate are extended to form the cylinder head (11).