CN209781168U - Suction valve apparatus for reciprocating compressor - Google Patents
Suction valve apparatus for reciprocating compressor Download PDFInfo
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- CN209781168U CN209781168U CN201822190616.6U CN201822190616U CN209781168U CN 209781168 U CN209781168 U CN 209781168U CN 201822190616 U CN201822190616 U CN 201822190616U CN 209781168 U CN209781168 U CN 209781168U
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- suction
- suction valve
- reciprocating compressor
- valves
- compressor
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Abstract
the utility model discloses a suction valve device for reciprocating compressor, suction valve device's suction valve has different natural vibration frequency. According to the utility model in question, at least two suction valves are provided, which are asymmetrical and defined at different angles, wherein between these suction valves, at least one stabilizing portion is also provided, in which at least one discharge hole is formed. The suction valve device for a reciprocating compressor may be used in a miniaturized compressor, and more particularly, in a compressor in which a size of a valve plate closing one of free ends of a compression cylinder does not allow a discharge hole to be widely spaced from a suction hole.
Description
Technical Field
the present invention relates to a suction valve device for a reciprocating compressor, and more particularly, to a suction valve device in which at least two suction valves having different natural vibration frequencies are provided on the same metal blade.
Background
As known to those skilled in the art, a reciprocating compressor comprises, among other elements and functional systems, at least one compression cylinder having one of its ends closed by a plate, called valve plate, provided with a discharge hole and a suction hole. In conventional assemblies, a discharge valve (cooperating with the discharge orifice) and a suction valve (cooperating with the suction orifice) are attached in some way to the plate that encloses the compression cylinder.
It is also known to the person skilled in the art that in conventional assemblies it is foreseen to have a plurality of suction valves formed in the same metal blade, anchored or fixed in some way to the plate closing one of the free ends of the compression cylinder.
in this regard, the prior art already comprises the solution described and illustrated in patent document US 20060039808, which describes a refrigeration compressor provided with a valve plate comprising a plurality of suction holes and with a suction valve arrangement, the valves of the refrigeration compressor cooperating with the suction holes. The suction valves are formed on the same metal blade and have different natural vibration frequencies. As indicated in this patent document, the presence of at least two suction valves having different natural vibration frequencies eventually enables the compressor to perform the suction of the refrigerant fluid more efficiently, without the risk of delayed closing of said valves in conditions in which the compressor operates at high suction frequencies.
In any case, the assembly of the suction valve device proposed in patent document US 20060039808 still comprises aspects subject to technical optimization.
Generally, the assembly of the suction valve device of patent document US 20060039808 contemplates the presence of two suction valves arranged side by side and whose centre lines are parallel. For these reasons, the device of such suction valve has proved difficult to miniaturize (in suction valve devices there is not much freedom in the definition of the discharge orifice).
The invention is therefore proposed according to these limiting aspects of the suction valve device of patent document US 20060039808.
Disclosure of Invention
The present invention is therefore primarily intended to propose a suction valve device for a reciprocating compressor which can be optimally manufactured by means of a stamping process, without this involving risks for the structural composition of the suction valve device.
Another of the objects of the present invention is that the suction valve arrangement for a reciprocating compressor can be used in a miniaturized compressor and, more particularly, in a compressor in which the size of the valve plate closing one of the free ends of the compression cylinder does not allow to design the discharge orifice widely spaced from the suction orifice.
The above object is achieved by providing a suction valve device for a reciprocating compressor, comprising: a metal vane having at least two suction valves and at least two discharge holes defined therein; wherein at least two suction valves comprised by the suction valve arrangement for a reciprocating compressor are asymmetrical; wherein the at least two suction valves have stems defined at different angles; at least one stabilizing portion is provided between the at least two suction valves, wherein at least one of at least two through holes serving as the discharge hole is formed in the stabilizing portion; at least one of the at least two through holes serving as the discharge hole is connected to a gap formed between the suction valve and the valve body and to the stabilizing portion.
Drawings
Fig. 1 describes in detail the preferred embodiment of the invention in question, fig. 1 shows in plan view the suction valve device for a reciprocating compressor proposed herein.
Detailed Description
As shown in fig. 1, a preferred embodiment of a suction valve device (object of the present invention) for reciprocating compressors comprises a metal blade 1 in which two suction valves 2 are defined by a mechanical stamping process. There are also defined two discharge holes 3 and four fixing holes 11, which are optional and, when present, are for allowing the assembly (alignment and attachment) of the metal vane 1 to a valve plate (not shown) closing one of the free ends of a compression cylinder (not shown).
Each of the suction valves 2 comprises a free end 21, a stem 22 and a fixed end 23.
In this context, as known to the person skilled in the art, the free end 21 and the stem 22 are formed by a circumferential (bulging) removal of material, which occurs by means of a mechanical stamping process, said free end cooperating with its respective suction aperture so as to block and clear the latter according to pressure variations in both sides of the valve. While the fixed end 23 is constituted by the adjacent area between the metal blade 1 and the area where the surrounding removal of material takes place.
According to the utility model in question, in addition to being arranged asymmetrically, the two suction valves 2 are also mutually asymmetrical or asymmetrical with respect to each other, so that the two suction valves 2 have stems 22 defined in a non-parallel manner at different angles.
The fact that the two suction valves 2 are asymmetric and are arranged asymmetrically ultimately allows better optimization of the valve parameters with respect to the geometrical constraints of the cylinder.
The stabilizing portion 4 is formed by the removal of the surrounding of the material of the two suction valves 2 (which occurs by means of a mechanical stamping process).
The presence of said stable portion 4 allows the suction valve device for reciprocating compressors to have different advantages.
the first advantage relates to manufacturing issues. Due to the presence of the stabilizing portion 4 between the two suction valves 2, it can be said with certainty that the risk of the surface finishing process (barrel polishing) causing undesirable deformations on said suction valves 2 becomes minimal. Eventually, all the discharge holes 3 may be formed in the stabilizing portion 4.
The fact that the through hole notch (indentation) serving as the refrigerant discharge hole 3 is connected to the clearance between the valve and the remaining constituent material enables better return of the oil from the interior of the compression cylinder to the discharge system.
It is important to emphasize that the sole purpose of the above description is to describe in an exemplary manner the specific embodiments of the discussed utility model. It is therefore evident that modifications, variations and constructive combinations of elements which perform the same function in substantially the same way to obtain the same result are within the scope of protection defined by the appended claims.
Claims (1)
1. A suction valve device for a reciprocating compressor, comprising:
A metal blade (1) in which at least two suction valves (2) and at least two discharge orifices (3) are defined;
The suction valve apparatus for a reciprocating compressor is characterized in that:
The at least two suction valves (2) are asymmetrical;
The at least two suction valves (2) having stems (22) defined at different angles;
At least one stabilizing portion (4) is provided between the at least two suction valves (2), wherein at least one of at least two through holes serving as the discharge hole (3) is formed in the stabilizing portion (4);
at least one of the at least two through holes serving as the discharge hole (3) is connected to a gap formed between the suction valve (2) and the valve body and to the stabilizing portion (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822190616.6U CN209781168U (en) | 2018-12-20 | 2018-12-20 | Suction valve apparatus for reciprocating compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822190616.6U CN209781168U (en) | 2018-12-20 | 2018-12-20 | Suction valve apparatus for reciprocating compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209781168U true CN209781168U (en) | 2019-12-13 |
Family
ID=68790700
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822190616.6U Active CN209781168U (en) | 2018-12-20 | 2018-12-20 | Suction valve apparatus for reciprocating compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209781168U (en) |
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2018
- 2018-12-20 CN CN201822190616.6U patent/CN209781168U/en active Active
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| GR01 | Patent grant | ||
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