WO2005085642A1 - Modular volumetric compressor - Google Patents

Modular volumetric compressor Download PDF

Info

Publication number
WO2005085642A1
WO2005085642A1 PCT/EP2005/050936 EP2005050936W WO2005085642A1 WO 2005085642 A1 WO2005085642 A1 WO 2005085642A1 EP 2005050936 W EP2005050936 W EP 2005050936W WO 2005085642 A1 WO2005085642 A1 WO 2005085642A1
Authority
WO
WIPO (PCT)
Prior art keywords
compressor
delivery
connection
coupling element
suction
Prior art date
Application number
PCT/EP2005/050936
Other languages
French (fr)
Inventor
Gianni Candio
Enrico Faccio
Andrea Tonin
Original Assignee
Refcomp Spa
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 Refcomp Spa filed Critical Refcomp Spa
Priority to US10/591,387 priority Critical patent/US20070269325A1/en
Priority to DE602005002356T priority patent/DE602005002356D1/en
Priority to EP05716893A priority patent/EP1727985B1/en
Publication of WO2005085642A1 publication Critical patent/WO2005085642A1/en

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00Rotary-piston machines or pumps
    • F04C2/08Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/082Details specially related to intermeshing engagement type machines or pumps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C23/00Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/08Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C18/12Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
    • F04C18/14Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
    • F04C18/16Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2230/00Manufacture
    • F04C2230/60Assembly methods
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00Components
    • F04C2240/70Use of multiplicity of similar components; Modular construction
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C23/00Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
    • F04C23/008Hermetic pumps
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/49Method of mechanical manufacture
    • Y10T29/49229Prime mover or fluid pump making
    • Y10T29/49236Fluid pump or compressor making

Definitions

  • the present invention concerns a volumetric compressor, particularly suited to be used in air conditioning and/or refrigeration systems.
  • volumetric compressors are used, which are suitable for circulating a carrier fluid inside a closed circuit for air conditioning in closed spaces or for the refrigeration of cold rooms and similar structures.
  • volumetric compressors manufactured according to the prior art are all constituted by a casing in which it is possible to identify a carrier fluid suction chamber, provided with a suction valve and a carrier fluid delivery chamber, provided with a delivery valve, with a pair of screw rotors included between them.
  • volumetric compressors are available on the market; in particular, when they are used for the construction of air conditioning systems, they are provided, inside the casing, with a semi-hermetic motor unit for the operation of the rotors and with a lubricating oil separator positioned before the delivery valve.
  • volumetric compressors indeed, are equipped with a hydraulic circuit for the lubrication of the rotors that is suited to improve their efficiency; the lubricating oil is mixed with the carrier fluid inside the compressor and consequently it must be separated from the latter before being conveyed to the air conditioning circuit.
  • volumetric compressors similar to those described above, are generally used, that is, compressors comprising a casing inside which there is a semi-hermetic motor unit including a suction chamber provided with a suction valve and a delivery chamber provided with a delivery valve, with a pair of screw rotors included between them, in which, however, there is no lubricating oil separator.
  • volumetric compressor used for example for particularly aggressive fluids like ammonia, differs from those previously described owing to the fact that it is not provided with a motor unit inside the compressor casing.
  • the compressor called “open type” compressor, is equipped with drive and coupling means for connection to an external motor unit for the operation of the rotors.
  • the main drawback is represented by the fact that in order to meet the customer's different needs, according to the combinations described above, the manufacturer must produce different compressors.
  • Another drawback, connected to the previous one, is represented by the fact that, to obtain the constructional differences necessary to implement all the combinations mentioned and, therefore, to design and manufacture the different types of compressors, too many persons and means are required.
  • a further drawback is represented by the fact that if the customer needs a compressor with a configuration different from the one installed, he should obviously replace it with a new one capable of satisfying the new requirements of the system.
  • a situation of this kind occurs, for example, if the customer needs to pass from an external motor unit to a semi-hermetic motor unit associated with the suction head of the compressor.
  • the present invention aims to eliminate all the drawbacks listed above.
  • a volumetric compressor that, according to the main claim, comprises a pair of rotors cooperating with each other and housed inside a compressor body in which it is possible to identify a first flange, positioned on the suction side of said compressor body, and a second flange, positioned on the delivery side of said compressor body, said first flange being suited to be coupled with a suction head and said second flange being suited to be coupled with a delivery head of said voliimetric compressor, and is characterized in that said suction head is provided with a first counterflange suited to be connected to said first flange and comprises a coupling element for connection to a suction pipe, or a coupling element for connection to a suction pipe in combination with a motor unit, and in that said delivery head is provided with a second counterflange suited to be connected to said second flange and comprises a coupling element for connection to a delivery pipe, or a coupling element for connection to a delivery
  • the possibility to connect the same compressor body to two different types of suction head on the suction side and to two different types of delivery head on the delivery side makes it possible to achieve all the compressor configurations required by the market, using five different components, instead of making four separate compressors.
  • the possibility to removably connect the suction and delivery heads to the compressor body, through a connection with flange and counterflange allows the configuration of the compressor to be modified even after its first installation.
  • FIG. 1 is an exploded view of all the components of the volumetric compressor of the invention
  • the volumetric compressor of the invention indicated as a whole by 1 , comprises a pair of rotors 2 cooperating with each other and housed inside a compressor body 3 in which it is possible to identify a first flange 4 arranged on the suction side of said compressor body 3 and a second flange 5 arranged on the delivery side of said compressor body 3, said first flange 4 being suited to be coupled with a suction head 6, 7 and said second flange 5 being suited to be coupled with a delivery head 8, 9 of said volumetric compressor 1.
  • the suction head 6, 7 is provided with a first counterflange 10, 1 suited to be connected to said first flange 4 and includes a coupling element 12 for connection to a suction pipe, or a coupling element 13 for connection to a suction pipe in combination with a motor unit 14, and said delivery head 8, 9 is provided with a second counterflange 15, 16 suited to be connected to said second flange 5 and includes a coupling element 17 for connection to a delivery pipe, or a coupling element 18 for connection to a delivery pipe in combination with an oil separator 19.
  • Figures from 2 to 5 show the different configurations 50, 60, 70, 80 of the compressor 1 of the invention, that can be achieved by connecting to the compressor body 3 the different suction heads 8, 9 and delivery heads 10, 11 shown in Figure 1, by fastening each flange 4, 5 of the compressor body 3 to the counterflange 10, 11, 15, 16 of the suction head 6, 7 or of the delivery head 8, 9.
  • Figure 2 shows the configuration 50 that involves the installation, on the suction side of the compressor body 3, of a head 7 comprising a coupling element 13 for connection to a suction pipe in combination with a motor unit 14, preferably but not necessarily semi-hermetic, while on the delivery side of the compressor body 3 there is a head 8 comprising a coupling element 18 for connection to a delivery pipe in combination with an oil separator 19.
  • This type of configuration is the most widespread in air conditioning systems that must be equipped with a compressor 50 with " compact dimensions that integrates all the elements necessary for the operation of the circuit which generally requires one compressor only.
  • the semi-hermetic motor unit 14 that operates the rotors 2 housed inside the compressor body 3 this is generally constituted by an electric motor cooled by the carrier fluid itself.
  • each volumetric compressor 80 is equipped with an independent, semi-hermetic motor unit 14, while the filtration of the carrier fluid takes place in a common external oil separator that serves all the compressors making up the system, towards which all the delivery pipes of each compressor converge.
  • volumetric compressors 80 of the type shown in Figure 5 are used, in which the suction head 7, connected to the compressor body 3 on the suction side, comprises the coupling element 13 in combination with the motor unit 14, while the delivery head 9 connected to the compressor body 3 on the delivery side comprises only the delivery valve conveying the carrier fluid to the external oil separator.
  • Figure 4 shows a further configuration 70 of the volumetric compressor 1 of the invention, in which the suction head 8, connected to the compressor body 3 on the suction side, comprises only the coupling element 12 for connection to a suction pipe, while the delivery head 8 connected to the compressor body 3 on the delivery side comprises the coupling element 18 for connection to a delivery pipe in combination with the oil separator 19.
  • the last configuration 60 of the compressor 1 of the invention is that shown in Figure 3, in which the suction head 6 connected to the compressor body 3 on the suction side comprises only the coupling element 12 for connection to a carrier fluid suction pipe, while the delivery head 9, connected to the compressor body 3 on the delivery side, comprises only the coupling element 17 for connection to a carrier fluid delivery pipe.
  • the suction head 6 is equipped with drive means 20 suited to be set in motion by the motor unit of the system and to transmit motion to the rotors 2 housed inside the compressor body 3.
  • This type of compressor 60 is particularly suited to be installed in systems that use particularly aggressive carrier fluids, for example ammonia, which may damage the motor unit in case of contact with the latter.
  • carrier fluids for example ammonia
  • this may be sized according to the power required and to the type of carrier fluid used in the circuit, though maintaining a first flange 4, arranged on the suction side, and a second flange 5, arranged on the delivery side, suited to house corresponding counterflanges 10, 11, 15, 16 for the connection of the suction heads 6, 7 and the delivery heads 8, 9 shown in Figure 1.
  • the sizing of the compressor body 3 is generally achieved by varying the longitudinal development of the rotors 2 housed inside it and consequently the longitudinal development of the compressor body itself.
  • volumetric compressor 1, 50, 60, 70, 80 in which it is substantially possible to identify three interchangeable functional units, that is, a compressor body 3, a suction head 6, 7 and a delivery head 8, 9, makes the compressor , 50, 60, 70, 80 of the invention modular and, therefore, easy to be adapted to the different needs of the user, simply by assembling the components in different ways.
  • the coupling element 12, 13 for connection to a suction pipe for the carrier fluid at low pressure and the coupling element 17, 18 for connection to a delivery pipe for the carrier fluid at high pressure may be constituted, according to the customer's needs, by a suction and/or delivery valve or, alternatively, by a suction and/or delivery coupling.
  • the aim to carry out a volumetric compressor in which, owing to its modular nature, the number of components necessary to obtain the different configurations required by the users is reduced. It is also achieved the aim to carry out a volumetric compressor whose construction technique can be simplified compared to the prior art, thus obtaining a reduction in design and construction costs. Finally, it is also achieved the aim to carry out a volumetric compressor whose configuration may be modified even after its first installation to meet, for example, new needs of the system, or to be reinstalled in a new system.

Abstract

A volumetric compressor (1) of the type comprising a pair of rotors (2) cooperating with each other and housed inside a compressor body (3), in which it is possible to identify a first flange (4), arranged on the suction side of the compressor body (3), and a second flange (5), arranged on the delivery side of the compressor body (3), suited to couplingly house a suction head (6, 7) and a delivery head (8, 9) of the volumetric compressor (1), wherein the suction head (6, 7) is provided with a first counterflange (10, 11), suited to be connected to the first flange (4), and comprises a coupling element (12) for connection to a suction pipe, or a coupling element (13) for connection to a suction pipe in combination with a motor unit (14), and the delivery head (8, 9) is provided with a second counterflange (15, 16), suited to be connected to the second flange (5), and comprises a coupling element (17) for connection to a delivery pipe, or a coupling element (18) for connection to a delivery pipe in combination with an oil separator (19).

Description

MODULAR VOLUMETRIC COMPRESSOR.
The present invention concerns a volumetric compressor, particularly suited to be used in air conditioning and/or refrigeration systems.
It is known that in air conditioning and/or refrigeration systems volumetric compressors are used, which are suitable for circulating a carrier fluid inside a closed circuit for air conditioning in closed spaces or for the refrigeration of cold rooms and similar structures.
Though in their different specific applications, the volumetric compressors manufactured according to the prior art are all constituted by a casing in which it is possible to identify a carrier fluid suction chamber, provided with a suction valve and a carrier fluid delivery chamber, provided with a delivery valve, with a pair of screw rotors included between them.
For the different applications mentioned above, different types of volumetric compressors are available on the market; in particular, when they are used for the construction of air conditioning systems, they are provided, inside the casing, with a semi-hermetic motor unit for the operation of the rotors and with a lubricating oil separator positioned before the delivery valve.
Volumetric compressors, indeed, are equipped with a hydraulic circuit for the lubrication of the rotors that is suited to improve their efficiency; the lubricating oil is mixed with the carrier fluid inside the compressor and consequently it must be separated from the latter before being conveyed to the air conditioning circuit.
For the refrigeration systems, on the other hand, volumetric compressors, similar to those described above, are generally used, that is, compressors comprising a casing inside which there is a semi-hermetic motor unit including a suction chamber provided with a suction valve and a delivery chamber provided with a delivery valve, with a pair of screw rotors included between them, in which, however, there is no lubricating oil separator.
In the refrigeration systems, indeed, two or more compressors arranged in parallel are often used, and a single lubricating oil separator is used for all the compressors making up the system.
A further possible configuration of the volumetric compressor, used for example for particularly aggressive fluids like ammonia, differs from those previously described owing to the fact that it is not provided with a motor unit inside the compressor casing. In this case the compressor, called "open type" compressor, is equipped with drive and coupling means for connection to an external motor unit for the operation of the rotors.
The known volumetric compressors mentioned above, however, have some drawbacks that have been recognised as such.
The main drawback is represented by the fact that in order to meet the customer's different needs, according to the combinations described above, the manufacturer must produce different compressors. Another drawback, connected to the previous one, is represented by the fact that, to obtain the constructional differences necessary to implement all the combinations mentioned and, therefore, to design and manufacture the different types of compressors, too many persons and means are required. A further drawback is represented by the fact that if the customer needs a compressor with a configuration different from the one installed, he should obviously replace it with a new one capable of satisfying the new requirements of the system.
A situation of this kind occurs, for example, if the customer needs to pass from an external motor unit to a semi-hermetic motor unit associated with the suction head of the compressor. The present invention aims to eliminate all the drawbacks listed above.
It is a first aim of the invention to carry out a volumetric compressor that makes it possible to reduce the number of components required to obtain all the types of compressor described by unifying their common parts. It is another aim of the invention to carry out a volumetric compressor whose construction technique can be simplified compared to the prior art, with consequent reduction in design and construction costs. It is a further aim of the invention to carry out a volumetric compressor that may be modified during manufacture with no need to replace it if its configuration must be changed. The aims described above have been achieved through the implementation of a volumetric compressor that, according to the main claim, comprises a pair of rotors cooperating with each other and housed inside a compressor body in which it is possible to identify a first flange, positioned on the suction side of said compressor body, and a second flange, positioned on the delivery side of said compressor body, said first flange being suited to be coupled with a suction head and said second flange being suited to be coupled with a delivery head of said voliimetric compressor, and is characterized in that said suction head is provided with a first counterflange suited to be connected to said first flange and comprises a coupling element for connection to a suction pipe, or a coupling element for connection to a suction pipe in combination with a motor unit, and in that said delivery head is provided with a second counterflange suited to be connected to said second flange and comprises a coupling element for connection to a delivery pipe, or a coupling element for connection to a delivery pipe in combination with an oil separator. Advantageously, the possibility to connect the same compressor body to two different types of suction head on the suction side and to two different types of delivery head on the delivery side makes it possible to achieve all the compressor configurations required by the market, using five different components, instead of making four separate compressors. Still advantageously, the possibility to removably connect the suction and delivery heads to the compressor body, through a connection with flange and counterflange, allows the configuration of the compressor to be modified even after its first installation. The aims and advantages mentioned above will be highlighted in greater detail in the description of a favourite application of the invention, given as an example without limitation with reference to the enclosed drawings, wherein:
- Figure 1 is an exploded view of all the components of the volumetric compressor of the invention;
- Figures from 2 to 5 show different executive embodiments of the compressor of the invention, that can be obtained using the components shown in Figure 1. As can be observed in Figure 1, the volumetric compressor of the invention, indicated as a whole by 1 , comprises a pair of rotors 2 cooperating with each other and housed inside a compressor body 3 in which it is possible to identify a first flange 4 arranged on the suction side of said compressor body 3 and a second flange 5 arranged on the delivery side of said compressor body 3, said first flange 4 being suited to be coupled with a suction head 6, 7 and said second flange 5 being suited to be coupled with a delivery head 8, 9 of said volumetric compressor 1. According to the invention, the suction head 6, 7 is provided with a first counterflange 10, 1 suited to be connected to said first flange 4 and includes a coupling element 12 for connection to a suction pipe, or a coupling element 13 for connection to a suction pipe in combination with a motor unit 14, and said delivery head 8, 9 is provided with a second counterflange 15, 16 suited to be connected to said second flange 5 and includes a coupling element 17 for connection to a delivery pipe, or a coupling element 18 for connection to a delivery pipe in combination with an oil separator 19.
Figures from 2 to 5 show the different configurations 50, 60, 70, 80 of the compressor 1 of the invention, that can be achieved by connecting to the compressor body 3 the different suction heads 8, 9 and delivery heads 10, 11 shown in Figure 1, by fastening each flange 4, 5 of the compressor body 3 to the counterflange 10, 11, 15, 16 of the suction head 6, 7 or of the delivery head 8, 9. In particular, Figure 2 shows the configuration 50 that involves the installation, on the suction side of the compressor body 3, of a head 7 comprising a coupling element 13 for connection to a suction pipe in combination with a motor unit 14, preferably but not necessarily semi-hermetic, while on the delivery side of the compressor body 3 there is a head 8 comprising a coupling element 18 for connection to a delivery pipe in combination with an oil separator 19.
This type of configuration is the most widespread in air conditioning systems that must be equipped with a compressor 50 with" compact dimensions that integrates all the elements necessary for the operation of the circuit which generally requires one compressor only. As to the semi-hermetic motor unit 14 that operates the rotors 2 housed inside the compressor body 3, this is generally constituted by an electric motor cooled by the carrier fluid itself.
For the refrigeration of cold rooms and similar structures, in order to achieve the performance required by the system it is often necessary to use a certain number of compressors 80 arranged in series.
In this case, each volumetric compressor 80 is equipped with an independent, semi-hermetic motor unit 14, while the filtration of the carrier fluid takes place in a common external oil separator that serves all the compressors making up the system, towards which all the delivery pipes of each compressor converge. Thus, for this type of system, volumetric compressors 80 of the type shown in Figure 5 are used, in which the suction head 7, connected to the compressor body 3 on the suction side, comprises the coupling element 13 in combination with the motor unit 14, while the delivery head 9 connected to the compressor body 3 on the delivery side comprises only the delivery valve conveying the carrier fluid to the external oil separator.
Figure 4 shows a further configuration 70 of the volumetric compressor 1 of the invention, in which the suction head 8, connected to the compressor body 3 on the suction side, comprises only the coupling element 12 for connection to a suction pipe, while the delivery head 8 connected to the compressor body 3 on the delivery side comprises the coupling element 18 for connection to a delivery pipe in combination with the oil separator 19.
The last configuration 60 of the compressor 1 of the invention, that can be obtained with the components 6, 9 represented in Figure 1 , is that shown in Figure 3, in which the suction head 6 connected to the compressor body 3 on the suction side comprises only the coupling element 12 for connection to a carrier fluid suction pipe, while the delivery head 9, connected to the compressor body 3 on the delivery side, comprises only the coupling element 17 for connection to a carrier fluid delivery pipe. The suction head 6 is equipped with drive means 20 suited to be set in motion by the motor unit of the system and to transmit motion to the rotors 2 housed inside the compressor body 3.
This type of compressor 60 is particularly suited to be installed in systems that use particularly aggressive carrier fluids, for example ammonia, which may damage the motor unit in case of contact with the latter. As to the compressor body 3, this may be sized according to the power required and to the type of carrier fluid used in the circuit, though maintaining a first flange 4, arranged on the suction side, and a second flange 5, arranged on the delivery side, suited to house corresponding counterflanges 10, 11, 15, 16 for the connection of the suction heads 6, 7 and the delivery heads 8, 9 shown in Figure 1.
The sizing of the compressor body 3 is generally achieved by varying the longitudinal development of the rotors 2 housed inside it and consequently the longitudinal development of the compressor body itself. Thus, it is obvious that, by combining compressor bodies of different sizes with the suction heads 6, 7 and the delivery heads 8, 9 shown in Figure 1, it is possible to obtain multiple configurations of the compressor, reducing the number of components to be manufactured and kept in stock, with no need to have a specific compressor for each application, as was the case in the prior art described above. The possibility to have a volumetric compressor 1, 50, 60, 70, 80 in which it is substantially possible to identify three interchangeable functional units, that is, a compressor body 3, a suction head 6, 7 and a delivery head 8, 9, makes the compressor , 50, 60, 70, 80 of the invention modular and, therefore, easy to be adapted to the different needs of the user, simply by assembling the components in different ways.
As to the coupling element 12, 13 for connection to a suction pipe for the carrier fluid at low pressure and the coupling element 17, 18 for connection to a delivery pipe for the carrier fluid at high pressure, they may be constituted, according to the customer's needs, by a suction and/or delivery valve or, alternatively, by a suction and/or delivery coupling.
As to the connection of the suction heads 6, 7 and delivery heads 8, 9 to the compressor body 3, it takes place through a coupling between flange 4, 5 and counterflange 10, 11, 15, 16 that is made integral through suitable fastening means 21 of the known type, for example screws. According to the above, it can be understood that the volumetric compressor of the invention achieves all the aims set.
In particular, it is achieved the aim to carry out a volumetric compressor in which, owing to its modular nature, the number of components necessary to obtain the different configurations required by the users is reduced. It is also achieved the aim to carry out a volumetric compressor whose construction technique can be simplified compared to the prior art, thus obtaining a reduction in design and construction costs. Finally, it is also achieved the aim to carry out a volumetric compressor whose configuration may be modified even after its first installation to meet, for example, new needs of the system, or to be reinstalled in a new system.
Upon implementation, modifications and changes that are neither described nor represented may be made to the volumetric compressor object of the invention.
The embodiments described and any other that have not been mentioned are to be considered protected by the present patent, provided that they fall within the scope of the claims expressed below.

Claims

CLAIMS 1 ) Volumetric compressor (1 ) of the type comprising a pair of rotors (2) cooperating with each other and housed inside a compressor body (3) in which it is possible to identify a first flange (4) arranged on the suction side of said compressor body (3) and a second flange (5) arranged on the delivery side of said compressor body (3), said first flange (4) being suited to be coupled with a suction head (6, 7) and said second flange (5) being suited to be coupled with a delivery head (8, 9) of said volumetric compressor (1 ), characterized in that said suction head (6, 7) is provided with a first counterflange (10, 11), suited to be connected with said first flange (4), and comprises a coupling element (12) for connection to a suction pipe, or a coupling element (13) for connection to a suction pipe in combination with a motor unit (14), and in that said delivery head (8, 9) is provided with a second counterflange (15, 16), suited to be connected with said second flange (5), and comprises a coupling element (17) for connection to a delivery pipe, or a coupling element (18) for connection to a delivery pipe in combination with an oil separator (19). 2) Volumetric compressor (60) according to claim 1 ), characterized in that said suction head (6) comprises a coupling element (12) for connection to a suction pipe, and said delivery head (9) comprises a coupling element (17) for connection to a delivery pipe. 3) Volumetric compressor (70) according to claim 1), characterized in that said suction head (6) comprises a coupling element (12) for connection to a suction pipe, and said delivery head (8) comprises a coupling element (18) for connection to a delivery pipe in combination with an oil separator (19). 4) Volumetric compressor (80) according to claim 1 ), characterized in that said suction head (7) comprises a coupling element (13) for connection to a suction pipe in combination with a motor unit (14), and said delivery head (9) comprises a coupling element (17) for connection to a delivery pipe. 5) Volumetric compressor (50) according to claim 1 ), characterized in that said suction head (7) comprises a coupling element (13) for connection to a suction pipe in combination with a motor unit (14), and said delivery head (8) comprises a coupling element (18) for connection to a delivery pipe in combination with an oil separator (19). 6) Volumetric compressor (1 , 50, 60, 70, 80) according to claim 1), characterized in that said coupling element (12, 13) for connection to a suction pipe is constituted by a suction valve. 7) Volumetric compressor (1, 50, 60, 70, 80) according to claim 1), characterized in that said coupling element (12, 13) for connection to a suction pipe is constituted by a suction coupling. 8) Volumetric compressor (1, 50, 60, 70, 80) according to claim 1), characterized in that said coupling element (17, 18) for connection to a delivery pipe is constituted by a delivery valve. 9) Volumetric compressor (1, 50, 60, 70, 80) according to claim 1), characterized in that said coupling element (17, 18) for connection to a delivery pipe is constituted by a delivery coupling. 10) Volumetric compressor (1, 50, 80) according to claim 1), characterized in that said motor unit (14) is of the semi-hermetic type. 11) Volumetric compressor (1, 50, 60, 70, 80) according to claim 1), characterized in that it comprises fastening means (21 ) suited to permanently connect said first and second flange (4, 5) to said first and second counterflange (10, 11, 15, 16), respectively. 12) Volumetric compressor (1, 50, 60, 70, 80) according to claim 11 ), characterized in that said fastening means (21 ) are constituted by screws. 13) Volumetric compressor (1, 50, 80) according to claim 1), characterized in that said motor unit (14) is constituted by an electric motor. 14) Compressor (1, 50, 60, 70, 80) substantially according to what has been described and represented above.
PCT/EP2005/050936 2004-03-04 2005-03-03 Modular volumetric compressor WO2005085642A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US10/591,387 US20070269325A1 (en) 2004-03-04 2005-03-03 Modular Volumetric Compressor
DE602005002356T DE602005002356D1 (en) 2004-03-04 2005-03-03 MODULAR VOLUMETRIC COMPRESSOR
EP05716893A EP1727985B1 (en) 2004-03-04 2005-03-03 Modular volumetric compressor

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT000035A ITVI20040035A1 (en) 2004-03-04 2004-03-04 MODULAR VOLUMETRIC COMPRESSOR
ITVI2004A000035 2004-03-04

Publications (1)

Publication Number Publication Date
WO2005085642A1 true WO2005085642A1 (en) 2005-09-15

Family

ID=34917563

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2005/050936 WO2005085642A1 (en) 2004-03-04 2005-03-03 Modular volumetric compressor

Country Status (7)

Country Link
US (1) US20070269325A1 (en)
EP (1) EP1727985B1 (en)
CN (1) CN1930395A (en)
AT (1) ATE372463T1 (en)
DE (1) DE602005002356D1 (en)
IT (1) ITVI20040035A1 (en)
WO (1) WO2005085642A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007104496A1 (en) * 2006-03-10 2007-09-20 Brueninghaus Hydromatik Gmbh Combined pump housing for several rated quantities
WO2008080573A2 (en) * 2006-12-29 2008-07-10 Robert Bosch Gmbh Axial piston engine having a housing comprising a radially extended inner section
WO2008129349A2 (en) * 2006-09-21 2008-10-30 Eaton Corporation Rotary fluid pressure device with modular multi-speed control mechanism
WO2012126607A3 (en) * 2011-03-24 2013-09-12 Rotorcomp Verdichter Gmbh Screw compressor system

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202009012158U1 (en) 2009-09-08 2011-02-03 Hugo Vogelsang Maschinenbau Gmbh Rotary pump
DE202010011626U1 (en) * 2010-08-20 2010-10-21 Hugo Vogelsang Maschinenbau Gmbh Rotary pump
US10830239B2 (en) 2015-08-11 2020-11-10 Carrier Corporation Refrigeration compressor fittings
EP3334937A1 (en) 2015-08-11 2018-06-20 Carrier Corporation Screw compressor economizer plenum for pulsation reduction
WO2017058369A1 (en) 2015-10-02 2017-04-06 Carrier Corporation Screw compressor resonator arrays
CN111608907B (en) * 2020-05-13 2021-04-27 东风汽车集团有限公司 Modularization gearbox electric oil pump

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4780061A (en) * 1987-08-06 1988-10-25 American Standard Inc. Screw compressor with integral oil cooling
JPH04159480A (en) * 1990-10-19 1992-06-02 Hitachi Ltd Screw compressor
DE4426761A1 (en) * 1994-07-22 1996-01-25 Kuehlautomat Berlin Gmbh Kab Screw compressor of geared rotor design

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1796440A (en) * 1928-01-20 1931-03-17 Niels A Christensen Compressor-valve mechanism
US2168036A (en) * 1938-01-19 1939-08-01 Maniscalco Pietro Compressor
US2668004A (en) * 1948-03-02 1954-02-02 American Brake Shoe Co Compressor
US2999629A (en) * 1959-04-23 1961-09-12 Worthington Corp Interchangeable, hermetic and opentype refrigeration compressor
US3088660A (en) * 1960-08-23 1963-05-07 Ingersoll Rand Co Rotary air compressor
US3407996A (en) * 1966-06-22 1968-10-29 Atlas Copco Ab Screw compressor units
US4236876A (en) * 1979-07-30 1980-12-02 Carrier Corporation Multiple compressor system
US5220784A (en) * 1991-06-27 1993-06-22 Allied-Signal Inc. Gas turbine engine module assembly

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4780061A (en) * 1987-08-06 1988-10-25 American Standard Inc. Screw compressor with integral oil cooling
JPH04159480A (en) * 1990-10-19 1992-06-02 Hitachi Ltd Screw compressor
DE4426761A1 (en) * 1994-07-22 1996-01-25 Kuehlautomat Berlin Gmbh Kab Screw compressor of geared rotor design

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 016, no. 452 (M - 1313) 21 September 1992 (1992-09-21) *

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007104496A1 (en) * 2006-03-10 2007-09-20 Brueninghaus Hydromatik Gmbh Combined pump housing for several rated quantities
US20090013861A1 (en) * 2006-03-10 2009-01-15 Brueninghaus Hydromatik Gmbh Combined pump housing for several rated quantities
US8608454B2 (en) 2006-03-10 2013-12-17 Brueninghaus Hydromatik Gmbh Combined pump housing for several rated quantities
WO2008129349A2 (en) * 2006-09-21 2008-10-30 Eaton Corporation Rotary fluid pressure device with modular multi-speed control mechanism
WO2008129349A3 (en) * 2006-09-21 2009-02-12 Eaton Corp Rotary fluid pressure device with modular multi-speed control mechanism
CN101542114B (en) * 2006-09-21 2013-11-13 伊顿公司 Rotary fluid pressure device with modular multi-speed control mechanism
KR101456932B1 (en) 2006-09-21 2014-10-31 이턴 코포레이션 Rotary fluid pressure device with modular multi-speed control mechanism
WO2008080573A2 (en) * 2006-12-29 2008-07-10 Robert Bosch Gmbh Axial piston engine having a housing comprising a radially extended inner section
WO2008080573A3 (en) * 2006-12-29 2008-08-28 Bosch Gmbh Robert Axial piston engine having a housing comprising a radially extended inner section
WO2012126607A3 (en) * 2011-03-24 2013-09-12 Rotorcomp Verdichter Gmbh Screw compressor system

Also Published As

Publication number Publication date
ITVI20040035A1 (en) 2004-06-04
CN1930395A (en) 2007-03-14
EP1727985A1 (en) 2006-12-06
DE602005002356D1 (en) 2007-10-18
US20070269325A1 (en) 2007-11-22
ATE372463T1 (en) 2007-09-15
EP1727985B1 (en) 2007-09-05

Similar Documents

Publication Publication Date Title
EP1727985B1 (en) Modular volumetric compressor
US8622725B2 (en) Mechanical compression ratio changing screw compressor
EP2048364A2 (en) Plural compressors with capacity control
EP3722609B1 (en) Screw compressor and air conditioning unit
WO2009136277A1 (en) Cooling plate for a frequency converter and compressor using said cooling plate
US6488480B1 (en) Housing for screw compressor
US10954943B2 (en) Compressor comprising a variable volume index valve
EP1664529A2 (en) Compact compressor
WO2008079131A1 (en) Screw compressor with integral bearing cover and discharge plenum divider
US7165947B2 (en) Screw compressor capable of manually adjusting both internal volume ratio and capacity and combined screw compressor unit accommodating variation in suction or discharge pressure
US10006287B2 (en) Compressor shell assembly
US20140086733A1 (en) Compressing system
CN108894988A (en) Compressor and air-conditioning system
CN109340112B (en) Compressor and air conditioner
US6193489B1 (en) Shaft assembly mechanism for scroll compressor
CN114215749A (en) Screw rotor, compressor and air conditioner
WO2011070589A2 (en) Conical shape single rotor compressor
WO2017134567A1 (en) Improved refrigeration compressor and layout
CN202579187U (en) Compressor with direct discharge end cover
EP3334938A1 (en) Refrigeration compressor fittings
CN114555947A (en) Screw compressor with adjustable channel
CN115962121A (en) Double-cylinder two-stage compressor and refrigerating system with same
CN105351195A (en) Intermediate-back-pressure compressor, air conditioner with intermediate-back-pressure compressor and heat pump water heater with intermediate-back-pressure compressor
JPH06330874A (en) Screw compressor
KR100873366B1 (en) A pulsation reducing type compressor

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NA NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SM SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): GM KE LS MW MZ NA SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LT LU MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
DPEN Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed from 20040101)
WWE Wipo information: entry into national phase

Ref document number: 2299/KOLNP/2006

Country of ref document: IN

WWE Wipo information: entry into national phase

Ref document number: 2005716893

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: 200580007025.3

Country of ref document: CN

NENP Non-entry into the national phase

Ref country code: DE

WWW Wipo information: withdrawn in national office

Ref document number: DE

WWP Wipo information: published in national office

Ref document number: 2005716893

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: 10591387

Country of ref document: US

WWG Wipo information: grant in national office

Ref document number: 2005716893

Country of ref document: EP

WWP Wipo information: published in national office

Ref document number: 10591387

Country of ref document: US