WO1998021477A1 - A one-way valve for use with compressors for air-conditioning units - Google Patents

A one-way valve for use with compressors for air-conditioning units Download PDF

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Publication number
WO1998021477A1
WO1998021477A1 PCT/IL1997/000364 IL9700364W WO9821477A1 WO 1998021477 A1 WO1998021477 A1 WO 1998021477A1 IL 9700364 W IL9700364 W IL 9700364W WO 9821477 A1 WO9821477 A1 WO 9821477A1
Authority
WO
WIPO (PCT)
Prior art keywords
valve
flap
pressure
compressors
conditioning units
Prior art date
Application number
PCT/IL1997/000364
Other languages
French (fr)
Inventor
Alexander Hurwitz
Daniel Hurwitz
Michael Hurwitz
Original Assignee
Alexander Hurwitz
Daniel Hurwitz
Michael Hurwitz
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Alexander Hurwitz, Daniel Hurwitz, Michael Hurwitz filed Critical Alexander Hurwitz
Priority to AU48821/97A priority Critical patent/AU4882197A/en
Publication of WO1998021477A1 publication Critical patent/WO1998021477A1/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/10—Adaptations or arrangements of distribution members
    • F04B39/1073—Adaptations or arrangements of distribution members the members being reed valves

Definitions

  • the present invention relates to a flap, one way valve, and more particularly to such a valve to be used mainly, but not exclusively with compressors for air conditioning units.
  • the use of valves according to the invention with car air conditioning units is extremely useful.
  • flap one way valves in compressors, for air conditioning units.
  • Such valves comprises a flap or plurality of flaps which cover a bore or a plurality of bores within the valve plate of the compressor.
  • valve arrangement according to the invention would diminish the pressure on the compressors piston and hence less stress on all parts which would result in less wear and tear.
  • Yet a further object is to reduce the various noises created by the compressor to wit mechanical noise, refriginate pulsation noise.
  • Figure 1 is a schematical partly cross section of the compressor.
  • FIG. 2 is an enlargement of a flap valve according to the prior art.
  • FIG. 3 A and B illustrates a top view of a plurality of prior art flap valves.
  • FIG 4 A and B likewise illustrates prior art flap valves.
  • FIG 5 A and B illustrates a different embodiment of a single flap valve according to the prior art.
  • Figure 6 A and B illustrates the flap and the valve plate according to the invention.
  • FIG 7 A and B also illustrates the flap and valve plate according to the invention.
  • FIG. 8 A, B, C and D illustrates an embodiment according to the invention.
  • Figure 9 illustrates a valve and plate according to the invention including various indications, by way of example.
  • Figure 10 illustrates, by way of example, the forces created in the prior art.
  • Figure 11 illustrates, by way of example, the forces created on a valve and plate according to the invention.
  • valve plate 2 which is separated by valve plate 2 from the cylinders 7.
  • Said valve plate is provided with a plurality of flaps 3 according to the number of cylinders.
  • flaps construction 5 which are covered by said flaps construction 5.
  • Each tongue (flap) of the valve covers one of said five bores, thus creating one way valve.
  • the pistons 7 within the compressor must create a pressure higher than the pressure with the cylinder head plus the force of the steel flaps.
  • valve plates there have been provided a circular groove 10 (see Figure 3) which thus defines the part which is sealed by the tongue or flap. However, the rest of the flap or tongue is still under the pressure within the cylinder head 1.
  • valve plates 2 would be provided with a recess section 12 (see Figure 8), which would result in the reduction of the pressure difference on both sides of the flap or tongue. Consequently, the force will be reduced only to overcome the pressure which applied on the narrow circular surface around bore 4.
  • FIG. 9 there is shown, by way of example, a valve plate and valve in which A refers to the bore 4 in the valve plate 2.
  • B refers to the pressure area.
  • C indicates the engagement surface of the flap.
  • D relates to the approximate center line of the pressure area.
  • E refers to the bending line of the flap.
  • Figure 10 illustrates, and demonstrates by way of example, the piston pressure required to open the valve as indicated on the left hand side of the valve plate while on the right hand side of the valve plate there appears the calculation of the pressure exce ⁇ ted on the valve by pressure in the cylinder head as example 15Kg 2 .
  • Figure 11 illustrates by way of example, the pressure required to open a valve employing the arrangement according to the invention as indicated on the left hand side while on the right hand side there are indicators which calculates the pressure within the cylinder head.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)

Abstract

A one-way valve to be used mainly but not exclusively with the compressors of air-conditioning units. The valve (3) is made of springy metal and covers a bore (4) which acts as an air outlet. Due to the relative great force required for opening the valve the valve-seat is provided with a recess (12) so as to enable the pressure on both sides of the valve to be equalized.

Description

A ONE-WAY VALVE FOR USE WITH COMPRESSORS FOR AIR-CONDITIONING UNITS
FIELD OF INVENTION
The present invention relates to a flap, one way valve, and more particularly to such a valve to be used mainly, but not exclusively with compressors for air conditioning units. The use of valves according to the invention with car air conditioning units is extremely useful.
It is well known to use flap, one way valves in compressors, for air conditioning units. Such valves comprises a flap or plurality of flaps which cover a bore or a plurality of bores within the valve plate of the compressor.
During operation there is constant pressure in the compressor head. Said flap or flaps are pushed open by the pressure created by the pistons within the compressor. It is quite obvious that the pressure which must be created by the piston in order to open said valve must be higher than the constant pressure with the cylinder head because of the difference of the areas, where pressure is exerted on the cylinder head side and the cylinder side.
Furthermore, the flap which is made of springy metal adds to the force which is required to push open the valve. OBJECTS OF THE PRESENT INVENTION
It is the object of the present invention to provide an improved valve and plate which does not require such forces and which would enable the compressor to work with a much higher efficiency, i.e., less power will be required for the operation to achieve same cooling capacity.
Furthermore, the valve arrangement according to the invention would diminish the pressure on the compressors piston and hence less stress on all parts which would result in less wear and tear.
Yet a further object is to reduce the various noises created by the compressor to wit mechanical noise, refriginate pulsation noise.
According to the invention there is provided a recess on the valves plate surface under said flap, so as to reduce the pressure differential above and under said flap, thus the power required to move the piston to create the necessary pressure to open said valve will be much less.
SHORT DESCRIPTION OF DRAWINGS
The invention will be described in accordance with the annexed drawings in which:
Figure 1 is a schematical partly cross section of the compressor.
Figure 2 is an enlargement of a flap valve according to the prior art.
Figure 3, A and B illustrates a top view of a plurality of prior art flap valves.
Figure 4, A and B likewise illustrates prior art flap valves.
Figure 5, A and B illustrates a different embodiment of a single flap valve according to the prior art. Figure 6, A and B illustrates the flap and the valve plate according to the invention.
Figure 7, A and B also illustrates the flap and valve plate according to the invention.
Figure 8, A, B, C and D illustrates an embodiment according to the invention.
Figure 9 illustrates a valve and plate according to the invention including various indications, by way of example.
Figure 10 illustrates, by way of example, the forces created in the prior art.
Figure 11 illustrates, by way of example, the forces created on a valve and plate according to the invention.
Turning first to figure 1 the compressor having a cylinder head 1 which is separated by valve plate 2 from the cylinders 7. Said valve plate is provided with a plurality of flaps 3 according to the number of cylinders. Within valve plate 2 there are provided, in the present embodiment, five bores 4 which are covered by said flaps construction 5. Each tongue (flap) of the valve covers one of said five bores, thus creating one way valve. In order to open the valves the pistons 7 within the compressor must create a pressure higher than the pressure with the cylinder head plus the force of the steel flaps.
In some of the valve plates there have been provided a circular groove 10 (see Figure 3) which thus defines the part which is sealed by the tongue or flap. However, the rest of the flap or tongue is still under the pressure within the cylinder head 1.
According to the invention valve plates 2 would be provided with a recess section 12 (see Figure 8), which would result in the reduction of the pressure difference on both sides of the flap or tongue. Consequently, the force will be reduced only to overcome the pressure which applied on the narrow circular surface around bore 4.
In Figure 9 there is shown, by way of example, a valve plate and valve in which A refers to the bore 4 in the valve plate 2. B refers to the pressure area. C indicates the engagement surface of the flap. D relates to the approximate center line of the pressure area. E refers to the bending line of the flap.
Figure 10 illustrates, and demonstrates by way of example, the piston pressure required to open the valve as indicated on the left hand side of the valve plate while on the right hand side of the valve plate there appears the calculation of the pressure exceφted on the valve by pressure in the cylinder head as example 15Kg2.
Figure 11 illustrates by way of example, the pressure required to open a valve employing the arrangement according to the invention as indicated on the left hand side while on the right hand side there are indicators which calculates the pressure within the cylinder head.
As can be seen from the above and comparing the two examples it is quite obvious that by employing the new valve arrangement less power is required the benefits of which are quite apparent, as stated in the description.

Claims

1. A one way valve and plate arrangement for compressors where there is provided a recess under the flap of the valve on the valve plate.
2. A one way valve and plate arrangement according to Claim 1 where a plurality of valve and recess are provided on the valve plate.
PCT/IL1997/000364 1996-11-12 1997-11-12 A one-way valve for use with compressors for air-conditioning units WO1998021477A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU48821/97A AU4882197A (en) 1996-11-12 1997-11-12 A one-way valve for use with compressors for air-conditioning units

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US77894096A 1996-11-12 1996-11-12
US08/778,940 1996-11-12

Publications (1)

Publication Number Publication Date
WO1998021477A1 true WO1998021477A1 (en) 1998-05-22

Family

ID=25114832

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IL1997/000364 WO1998021477A1 (en) 1996-11-12 1997-11-12 A one-way valve for use with compressors for air-conditioning units

Country Status (2)

Country Link
AU (1) AU4882197A (en)
WO (1) WO1998021477A1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1669889A (en) * 1922-04-17 1928-05-15 Couzens Ice Machine Company Compressor valve
US1748531A (en) * 1925-05-02 1930-02-25 Frigidaire Corp Refrigerating apparatus
US4978285A (en) * 1989-03-16 1990-12-18 Empresa Brasileira De Compressores S.A. Reed valve for hermetic compressor
US5632609A (en) * 1994-08-15 1997-05-27 Sanden Corporation Valved discharge mechanism of a refrigerant compressor

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1669889A (en) * 1922-04-17 1928-05-15 Couzens Ice Machine Company Compressor valve
US1748531A (en) * 1925-05-02 1930-02-25 Frigidaire Corp Refrigerating apparatus
US4978285A (en) * 1989-03-16 1990-12-18 Empresa Brasileira De Compressores S.A. Reed valve for hermetic compressor
US5632609A (en) * 1994-08-15 1997-05-27 Sanden Corporation Valved discharge mechanism of a refrigerant compressor

Also Published As

Publication number Publication date
AU4882197A (en) 1998-06-03

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