TW201314039A - Valve system for high frequency compressors - Google Patents

Abstract

The present invention relates to a valve system for reciprocating compressors that operate at high frequency - especially at values greater than 200 Hz, comprised of a cylinder joint (3); a suction plate (4) containing at least one suction valve (42) with circular end (43) pertaining to the suction plate (4); a plate (5) comprising at least one suction hole (51) and at least one discharge hole (52); at least one discharge valve (6) comprising a blade with at least an orthogonal extension (63) having a circular end (64); and at least one discharge stop (7) cooperating with the discharge valve (6), the stop (7) comprising a lower profile part provided with at least one counterbore (72) limiting the movement of the end (64) of the discharge valve (6).

Description

Valve system for high frequency compressors

The present invention relates to a valve system for a reciprocating compressor of a compressor, more particularly for operating at high frequencies, especially at values greater than 200 Hz.

As is known in the art, a compressor is generally reduced in volume by applying a mechanical force (in the case of a reciprocating compressor, typically accomplished by a piston in a cylinder). A device that increases its pressure. In order to effect the control of the gas flow, such devices use a vane valve that opens and closes depending on the pressure difference between the cylinder of the apparatus and the suction or discharge chamber.

However, it is a case that conventional compressors typically operate at frequencies ranging from about 50 Hz to 60 Hz and state of the art valves are typically designed in geometry and size to operate at this frequency range and are suitable for use in Valves operating at very high frequencies are unknown.

The valve system of the documents US 2001/0017162 and BR PI9202785 is an example of the state of the art, which has a very similar geometry shaped suction valve defined by substantially elongated blades fixed to individual discs by a single fastening zone. And the discharge valve, thus making their components extremely susceptible to damage and any damage due to the increase in the strength of the working force inherent in high frequency operation.

Document US Pat. No. 7,390,176 also teaches a suction valve having an elongated shape and more particularly a "Y" geometry, which provides support for the end of the valve on the base plate, which in addition to triggering the mentioned stress resistance In addition to the problem of sex, it can further lead to more wear of the two parts in high frequency operation. A similar construction is also provided in document CN 201202617, except as not mentioned In addition to the possibility of use under high frequency operating conditions, the end of the valve is also provided to remain supported on the substrate tray.

Therefore, it should be noted that the current state of the art lacks a valve system specifically designed for use in compressors operating at high frequencies, which provides geometric, structural and dimensional solutions suitable for resisting operating stresses under these conditions.

Purpose of the invention

Accordingly, one of the objects of the present invention is to provide a valve system specifically designed for use with a compressor operating at high frequencies, which valve system can be used in a compressor containing a frequency exceeding 200 Hz. .

Another of the objects of the present invention is to disclose a valve system for a high frequency compressor having geometric and dimensional characteristics that are resistant to stresses under such operating conditions.

Yet another object of the present invention is to disclose the dimensional characteristics of a valve system that is more suitable for use in a compressor operating at high frequencies.

The present invention achieves the above-mentioned objects by a valve system of the type consisting of the following parts for a high-frequency compressor: a disk for tightening in a cylinder of a compressor by means of a rivet, a pin, and suction a valve and a bleed valve, and the system includes: a cylinder joint; a suction disc cooperating with the cylinder joint, the suction disc including a central hollow portion provided with a cutting line or at least one suction valve having a rounded end a substantially circular body; a disk cooperating with a suction disk, the disk comprising at least one suction aperture and at least one discharge aperture; at least one discharge valve cooperating with the disk, the discharge valve comprising at least a rounded end a blade of one orthogonal extension; and At least one discharge stop that cooperates with a discharge valve that includes a lower profile member that is provided with at least one counterbore that limits movement of the end of the discharge valve.

Accordingly, the invention includes means for allowing the use of such a valve system in a compressor operating at high frequencies even at frequencies above 200 Hz.

In a preferred embodiment of the invention, the suction disk has a substantially circular geometry and a suction valve that is embedded in the body thereof along the crimping wire such that the disk and the suction valve form a single body.

Moreover, in a preferred embodiment of the invention, the suction valves have a length of between 5.0 mm and 5.5 mm.

Further, preferably, the suction disc, the suction valve, and the discharge valve have a thickness ranging from 0.05 mm to 0.11 mm (preferably 0.0762 mm).

It should be further noted that in a preferred embodiment of the invention, the bleed valve also has an overall length of between 5.5 mm and 6.0 mm.

1 illustrates an exemplary suction tray 1 of the state of the art having a substantially quadrilateral geometry with an elongated shape (vane type) suction valve 2 attached by means of a separate fastening element 21 Sexual inhalation on the plate. In general, it should be noted that such valves have a fastening region 22, an elongated intermediate portion 23, and an element 24 that is ultimately disposed on the suction aperture (not shown) of the disc 1.

In general, it is worth clarifying that the suction and discharge valves used in compressors that are typically operated at frequencies between 20 Hz and 75 Hz have a thickness between 0.152 mm and 0.254 mm and between 10 mm and 30 mm. Range An overall length which results in a component having a certain natural vibration frequency and, therefore, a constraint on the frequency with which it can be suitably used.

The valve system proposed in the present invention is depicted by drawing the suction valve and the discharge valve as shown in Fig. 2. Fig. 2 shows an exploded perspective view of the system in which the components of the system are separately shown, namely: the cylinder The joint 3, the suction disc 4, the valve disc 5, the exhaust valve 6, the discharge stopper 7, the rivet 8 and the pin 9.

The suction disc 4 illustrated in Figures 3.1 to 4 shows a substantially circular geometry and a cutting line or a hollow central portion 41 which produces two small suction valves 42 having rounded ends 43, the circular ends actually forming The closing element of the suction hole 51 of the disk 5.

It is important to emphasize that the suction assembly of the present invention consists of a single component in which the valve is embedded in the suction disc 4 and the crimping wire 44 imparts high resistance to damage to the component, which is destructive when operated at high frequencies. This may be caused by the movement of the valve rounded end 43, note that the length of the current state of the art is disclosed to be about 10 mm to 30 mm, while the total length of the valve 42 (including the end 43) is about 5.35 mm.

It is worthwhile to clarify that the crimping wire 44 is defined by a cylinder joint 3 located between the suction disc 4 and the compressor cylinder (not shown), and therefore, the support zone corresponding to the suction valve 42 of the suction disc 4 is defined by the cylinder joint 3 and the valve. Between the discs 5.

Furthermore, the thickness of the suction disc 4 is about 0.0762 mm (as in the state of the art, this value ranges from 0.152 mm to 0.254 mm), and due to the reduced thickness, the stiffness as a characteristic of the part remains at Within the limits of the increase in pumping efficiency.

For the assembly, the suction disc 4 is positioned between the valve disc 5 and the cylinder joint 3, and these three elements are fastened to the compressor cylinder (not shown) by means of suitable fastening elements to be positioned in the distal bore 10. . It should be noted that the cylinder joint 3 has a central span portion 31 to effect movement of the suction valve 42 having the rounded end 43 of the suction disc 4.

Then, the discharge valve 6 of the system object of the present invention, which is better illustrated in FIGS. 5.1 to 6, is composed of one integral blade having a thickness of about 0.0762 mm defined by a projection 61, two An angled transverse bar 62 extends from the end of the shank 61 and extends along an orthogonal extension 63 having a rounded end 64 that actually constitutes an element that overlaps the venting opening 52 of the valve disc 5.

The discharge valve assembly 6 on the valve disc 5 is constructed by means of one of the discharge stops 7 shown in Figures 7 and 8, which is defined by a thick member and in the representation of the W shape On its distal rod, there is a hole 71 for coupling the rivet 8 and the pin 9, the lower profile of which has a counterhole in its central portion 72 which acts to limit the circular shape of the discharge valve 6 The opening of the end 64 is open.

It should be noted that the total length of the rod 63 of the discharge valve 6 plus the rounded end 64 is a total of 5.85 mm and, therefore, is also significantly lower than conventionally known dimensions.

The systems presented are also different from conventional systems in that they present a number of suction and discharge valves and orifices in addition to their suction and discharge valves and orifices, which are commonly observed in similar conventional systems. This is because when there is usually only one valve for each function, it contains two suction inlets 51 and two discharge inlets 52.

Furthermore, it is worth clarifying that the system presented may also have a diameter ranging from 8 mm to 12 mm, except for the possibility of use in situations where the operating frequency is higher than the conventional system and even greater than 200 Hz. Used in cylinders.

It is to be noted that, although the preferred embodiment of the present invention has been shown, it is understood that those skilled in the art can make any omissions, substitutions and changes in the structure without departing from the spirit and scope of the invention. It is also expressly stated that all combinations of elements that perform the same function in substantially the same manner to achieve the same result are also within the scope of the invention. The invention is also fully contemplated and the elements of the illustrated embodiments are replaced with other elements.

However, it should be understood that the above description based on the above figures is only relevant to one of the possible embodiments of the system of the present invention, and the actual scope of the subject matter of the present invention is defined in the scope of the accompanying claims.

1‧‧‧Informative suction disc/disc

2‧‧‧blade suction valve

3‧‧‧Cylinder connector

4‧‧‧Inhalation tray

5‧‧‧Valve disc/disc

6‧‧‧Exhaust valve/discharge valve/discharge valve assembly

7‧‧‧Drain stop/stop

8‧‧‧ Rivets

9‧‧‧ Pin

10‧‧‧ distal hole

21‧‧‧Independent fastening elements

22‧‧‧ fastening zone

23‧‧‧Slim middle area

24‧‧‧ components

31‧‧‧ center span section

41‧‧‧Cutting line/central hollow part/hollow center part

42‧‧‧Inhalation valve/discharge valve/small suction valve/valve

43‧‧‧ Round end / valve round end / end

44‧‧‧voltage wiring

51‧‧‧Inhalation hole/intake inlet

52‧‧‧Drain hole/discharge inlet

61‧‧‧Bumps

62‧‧‧ transverse rod

63‧‧‧ rod/orthogonal extension

64‧‧‧round end/end

71‧‧‧ hole

72‧‧‧ countersink/central section

Figure 1 shows a front view of one of the valve discs and suction valves used in the state of the art; Figure 2 shows an exploded perspective view of a compressor valve system constructed in accordance with a preferred embodiment of the present invention; A rear view of one of the inhalation valve assemblies of the inventive system; Figure 3.2 shows a side view of the subject matter shown in Figure 3.1; Figure 3.3 shows a front view of one of the objects shown in Figure 3.1; Figure 4 shows One of the suction valves illustrated in Figure 3.1 is enlarged in detail; Figure 5.1 shows a front view of one of the discharge valve assemblies of the system of the subject matter of the present invention; Figure 5.2 shows a side view of the subject matter shown in Figure 5.1; Figure 5.3 shows a rear view of one of the objects shown in Figure 5.1; Figure 6 shows the invention of the present invention appearing in the effective shaded area of the discharge valve One of the discharge valves of the system amplifies the details; Figure 7 shows a side view of the discharge valve stop of the valve system of the subject matter of the present invention; and Figure 8 shows one of the discharge stops illustrated in Figure 7. Top view.

3‧‧‧Cylinder connector

4‧‧‧Inhalation tray

5‧‧‧Valve disc/disc

6‧‧‧Exhaust valve/discharge valve/discharge valve assembly

7‧‧‧Drain stop/stop

8‧‧‧ Rivets

9‧‧‧ Pin

10‧‧‧ distal hole

31‧‧‧ center span section

42‧‧‧Inhalation valve/discharge valve/small suction valve/valve

51‧‧‧Inhalation hole/intake inlet

52‧‧‧Drain hole/discharge inlet

61‧‧‧Bumps

71‧‧‧ hole

72‧‧‧ countersink/central section

Claims (6)

A valve system of the type consisting of a disc, a suction valve and a discharge valve for fastening a compressor cylinder (8) and a pin (9) by means of a rivet (8) and a pin (9), characterized in that The system comprises: a cylinder joint (3); a suction disc (4) cooperating with the cylinder joint (3), the suction disc (4) comprising a cutting wire provided or having a rounded end (43) One of the central hollow portions (41) of one of the at least one suction valve (42) is a substantially circular body; a valve disc (5) cooperating with the suction disc (4), the valve disc (5) including at least one a suction hole (51) and at least one discharge hole (52); at least one discharge valve (6) cooperating with a disk (5), the discharge valve (6) including at least one having a rounded end (64) a blade of one of the orthogonal extensions (63); at least one discharge stop (7) cooperating with the discharge valve (6), the stop (7) comprising the means for limiting the discharge valve (6) a lower profile member of at least one counterbore (72) for movement of the tip (64); and a compressor for allowing the use of the valve system for operation at frequencies of even greater than 200 Hz at high frequencies Member. A valve system according to claim 1, wherein the suction disc (4) has a substantially circular geometry and a cutting line (41) defining the geometry of the suction valve (42). The valve system of claims 1 and 2, wherein the suction valves (42) have an overall length of between 5.0 mm and 5.5 mm. The valve system of claim 1, wherein the suction disc (4), the suction valve (42), and the discharge valve (6) have a thickness of between 0.05 mm and 0.11 mm. The valve system of claim 4, wherein the suction disc (4), the suction valve (42), and the discharge valve (6) have a thickness of 0.0762 mm. The valve system of claims 1, 4 and 5, wherein the discharge valve (42) has an overall length of between 5.5 mm and 6.0 mm.