AU784967B2 - Apparatus for flushing and cleaning a refrigeration system - Google Patents
Apparatus for flushing and cleaning a refrigeration system Download PDFInfo
- Publication number
- AU784967B2 AU784967B2 AU47543/02A AU4754302A AU784967B2 AU 784967 B2 AU784967 B2 AU 784967B2 AU 47543/02 A AU47543/02 A AU 47543/02A AU 4754302 A AU4754302 A AU 4754302A AU 784967 B2 AU784967 B2 AU 784967B2
- Authority
- AU
- Australia
- Prior art keywords
- valve
- refrigerant
- assembly
- compressor
- housing
- Prior art date
- Legal status (The legal status 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 status listed.)
- Ceased
Links
Description
P/00/0 II Regulation 32
AUSTRALIA
PATENTS ACT 1990 COMPLETE SPECIFICATION FOR A STANDARD PATENT Name of Applicant: Address of Applicant: Actual Inventor: Address for Service: Frank J DANIEL 13 Fordham Dourt, BALLAJURA WA 6066 Frank J Daniel Griffith Hack, Patent and Trade Mark Attorneys, 6th Floor, 256 Adelaide Terrace, Perth, Western Australia, 6000.
Standard Complete Specification for the invention entitled: APPARATUS FOR FLUSHING AND CLEANING A REFRIGERATION
SYSTEM
The following is a full description of this invention, including the best method of performing it known to me:- APPARATUS FOR FLUSHING AND CLEANING A REFRIGERATION SYSTEM Field of the Invention The present invention relates to an apparatus for flushing and cleaning of a refrigeration system.
Background of the Invention It is known to clean refrigerant of a refrigeration system from time to time particularly, for example when recharging the refrigerant in a system. US Patent No. 4,939,903 (Goddard) describes a system for recovering refrigerant from a refrigeration system and then cleaning or purifying the refrigerant. The system described in Goddard is coupled to a refrigeration 1 unit, withdraws the refrigerant from that unit, cleans the refrigerant and then either returns 15 the refrigerant to the refrigeration unit or routes it through to a storage tank.
The present invention was developed with a view to providing a system which can flush and clean a refrigeration system rather than purifying the refrigerant of a refrigeration system.
It will be clearly understood that, although a number of prior art publications are referred to herein, this reference does not constitute an admission that any of these documents forms part of the common general knowledge in the art, in Australia or in any other country.
Summary of the Invention According to the present invention there is provided apparatus for cleaning and flushing a refrigeration system comprising: a housing; a refrigerant inlet assembly disposed in said housing and adapted for interfacing with a refrigeration system to be serviced said refrigerant inlet assembly comprising a high H \mcamp\keep\etype\P45952 Amended Pages Claims Daniels June 06 doc 16/06/06 pressure liquid hose member having a first end and a second end, said first end of said high pressure liquid hose member being removably couplable to the refrigeration system to be serviced, said high pressure liquid hose member facilitating the flow of refrigerant from the refrigeration system to be serviced into said apparatus; and a first valve means positioned on a wall of said housing, said first valve means maintaining a closed system when said high pressure liquid hose member is not connected to said first valve means and coupling said apparatus to the refrigeration system to be serviced when said second end of said high pressure liquid hose member is coupled to said first valve means; a filter assembly coupled to said refrigerant inlet assembly such that a refrigerant flowing through said refrigerant inlet assembly flows into said filter assembly; a compressor/condenser assembly coupled to said filter assembly such that the refrigerant flows from said filter assembly into said compressor/condenser assembly, said compressor/condenser assembly being positioned within said housing, said 15 compressor/condenser assembly having a liquid receiver containing a volume of the *refrigerant; and a refrigerant outlet assembly adapted for interfacing with a refrigerant input of said refrigeration system to be serviced, said refrigerant outlet assembly being coupled to said compressor/condenser assembly such that when said refrigerant inlet assembly and said 20 refrigerant outlet assembly are coupled to the refrigeration system to be serviced a closed system is established for the flow of the volume of refrigerant, said compressor/condenser assembly re-circulated said volume of refrigerant through said refrigeration system to be serviced whereby said volume of refrigerant cleans and flushes said refrigeration system.
°°go 25 Preferably said refrigerant inlet system comprises a pressure gauge operationally coupled to said first valve means and adapted for monitoring the input pressure from the refrigeration system to said apparatus.
The first valve means may be a schreder valve.
Preferably said pressure gauge member has an operational range of 0-30 inches of mercury.
H mcLrnp\kepVretypc\P45952 Amended Pages Cims Daniels June 06 doc 16/06/06 Preferably said filter assembly comprises: a first valve coupled to said refrigerant inlet assembly, said first valve having a first valve portion and an actuation portion, said actuation portion accessible from outside of said housing for facilitating the opening and closing of said first valve, said first valve portion being positioned substantially within said housing; a filter member coupled to said first valve, said filter member being adapted for removing particulate materials and other contaminants from the refrigerant, said filter member being coupled to said first valve; and a second valve having an actuation portion accessible from outside of said housing, said second valve being closeable to maintain a closed system when said filter member is being replaced, said second valve being normally left open during operation, said second valve being coupled to said filter member.
15 Preferably said compressor/condenser assembly comprises: a compressor coupled to said filter assembly such that refrigerant flowing from said "filter assembly flows into said compressor, said compressor being for drawing said refrigerant through said cooling unit to be serviced, said compressor being positioned within said housing; and, 20 a condenser coupled to said compressor such that refrigerant flowing from said 00 compressor flows into said condenser, said condenser being adapted for converting the refrigerant into a liquid and dumping said liquid into said liquid receiver, said condenser being positioned within said housing.
25 Preferably said compressor/condenser assembly comprises a condenser fan positioned substantially within said housing, said housing having an opening adjacent to said condenser fan for facilitating the flow of air over a surface of said condenser for heat transfer.
Preferably one or both of said first valve and said second valve is a solenoid valve or a hand valve.
H:nc nmp\keepVetype\P45952 Amended Pages Claims Daniels June 06.doc 16/06/06 Preferably said compressor/condenser assembly comprises: a first and second sight glass, said first sight glass being operationally coupled between said filter assembly and said compressor, said first sight glass being for providing a visualisation of refrigerant gas and liquid flow, said first sight glass being positioned such that said first sight glass is visible from outside said housing; said second sight glass being operationally coupled between said condenser and said liquid receiver, said second sight glass being for providing a visualisation of refrigerant gas and liquid flow, said second sight glass being positioned such that said second sight glass is visible from outside said housing.
Preferably wherein said refrigerant outlet assembly further comprises: a second high pressure liquid hose member having a first end and a second end, S•said first end of said second high pressure liquid hose member being removably couplable 15 to the refrigeration system to be service, said second high pressure liquid hose member being for facilitating the flow of refrigerant from said refrigerant conditioning system back into the refrigeration system to be serviced; ~a second valve means positioned on said housing, said second valve mans being for maintaining a closed system when said second high pressure liquid hose member is not 20 connected to said second valve means and for coupling said apparatus to the refrigeration system when said second end of said second high pressure liquid hose member is coupled to said second valve means, said second valve means being coupled to said compressor/condenser assembly; and a third valve coupled between said compressor/condenser assembly and said second valve means, said third valve having a third valve portion and a third actuation portion, said third actuation portion accessible from outside of said housing for facilitating the opening and closing of said third valve, said third valve portion being positioned substantially within said housing.
The second valve means may be a schreder valve.
H:mcampeepeype\P45952 Aimended Pages Claims Danicls June 06 doc 16/06/06 Preferably said housing includes a handle positioned on said wall of said housing, said handle being for facilitating transportation of said apparatus.
Brief Description of the Drawings An embodiment of the invention will now be described by way of example only with reference to the accompanying drawings in which: Figure 1 is a schematic perspective view of a new refrigerant conditioning system according to the present invention.
Figure 2 is a schematic functional flow block diagram view of the present invention.
Figure 3 is a schematic electrical connectivity view of the present invention *Description of the Preferred Embodiment .As best illustrated in Figures 1 through 3, the apparatus 10 for flushing and cleaning generally comprises an housing 20, a refrigerant inlet assembly 30, a filter assembly 40, a 20 compressor/condenser assembly 50, and a refrigerant outlet assembly The housing 20 has four side walls 22, a top 24 and a bottom 26 which define an interior space.
25 The refrigerant inlet assembly 30 is designed for interfacing with a refrigeration system to be serviced 2.
The filter assembly 40 is coupled to the refrigerant inlet assembly 30 such that a refrigerant flowing through the refrigerant inlet assembly flows 30 into the filter assembly The compressor/condenser assembly 50 is coupled to the filter assembly 40 such that the H:\mcamp\keep\retypc\P45952 Amended Pages Claims Daniels June 06 doc 16/06/06 refrigerant flows from the filter assembly 40 into the compressor/condenser assembly The compressor/condenser assembly 50 is positioned within the housing 20. The compressor/condenser assembly 50 draws refrigerant initially stored in a liquid receiver 56 through the refrigeration system 2 and back into the apparatus 10, re-circulating the refrigerant for a period sufficient so to effect flushing and cleaning of the system 2. Thus refrigerant initially held in the liquid receiver 56 acts as a flushing fluid, carrying debris and other contaminants from system 2 into the apparatus 10, where they are filtered from the refrigerant.
The refrigerant outlet assembly 60 is designed for interfacing with a refrigerant input of a refrigeration system 2 to be serviced. The refrigerant outlet assembly 60 is coupled to the compressor/condenser assembly 50 such that when the refrigerant inlet assembly 30 and the refrigerant outlet assembly 60 are coupled to the refrigeration system 2 being serviced a Sclosed system is established for the flow and conditioning of the refrigerant.
The refrigerant inlet assembly 30 further includes a high pressure liquid hose member 32, a first valve means in the form of a schreder valve 34, and a pressure gauge 36.
The high pressure liquid hose member 32 includes a first end and a second end. The first 20 end of the high pressure liquid hose member 32 is removably couplable to the refrigeration system 2 to be service. The high pressure liquid hose member 32 is for facilitating the flow of refrigerant from the refrigeration system 2 into the apparatus The schreder valve 34 is positioned on a face of a side wall 22 of the housing 20. The 25 schreder valve 34 is for maintaining a closed system when the high pressure liquid hose member 32 is not connected to the schreder valve 34 and for coupling the apparatus 10 to the refrigeration system 2 when the second end of the high pressure liquid hose member 32 is coupled to the schreder valve 34.
The pressure gauge 36 is operationally coupled to the schreder valve 34 and designed for monitoring the input pressure from the refrigeration system 2 to the apparatus H:\mnamp\keep\rtype\P45952 Amended Pages Claims Daniels June 06 doc 16/06/06 In an embodiment the schreder valve 34 is a inch schreder valve.
In a further embodiment the pressure gauge member 36 has an operational range of 0-30 inches of mercury.
The filter assembly 40 further comprises a first 42 and second hand valve 46 and a filter member 44.
The first hand valve 42 is coupled to the refrigerant inlet assembly 30. The first hand valve 42 includes a valve portion and a handle actuation portion 43. The handle actuation portion 43 extends from a side wall 22 of the housing 20 for facilitating the opening and closing of the first hand valve 42. The valve portion is positioned substantially within the housing The filter member 44 is coupled to the first hand valve 42. The filter member 44 is designed for removing particulate materials and other contaminants from the refrigerant.
The filter member 44 is coupled to the first hand valve 42.
20 The second hand valve 46 is positioned such that a handle portion of the second hand valve 46 extends from the bottom 26 of the housing 20. The second hand valve 46 can be closed to maintain a closed system when the filter member 44 is being replaced. The second hand valve 46 is normally left open during operation. The second hand valve 46 is coupled to the filter member 44.
The compressor/condenser 50 assembly further comprises a compressor 52, a condenser 53, a condenser fan 54, a liquid receiver 56, and a first 51 and second sight glass The compressor 52 is coupled to the filter assembly 40 such that refrigerant flowing from the filter assembly 40 flows into the compressor 52. The compressor 52 is for forcing the H:\mcamp\keep\retypc\P45952 Amended Pages Claims Daniels June 06.doc 16/06/06 -9refrigerant out of the apparatus 10 and re-circulating refrigerant through the refrigeration system 2 and the apparatus 10. The compressor 52 is positioned within the housing The condenser 53 is coupled to the compressor 52 such that refrigerant flowing from the compressor 52 flows into the condenser 53. The condenser 53 is designed for converting the refrigerant into a liquid. The condenser 53 is positioned within the housing The condenser fan 54 is positioned substantially within the housing 20. The housing has an opening adjacent to the condenser fan 54 for facilitating the flow of air over a surface of the condenser 53 for heat transfer.
The liquid receiver 56 is coupled to the condenser 53 such that refrigerant flowing from the condenser 53 flows into the liquid receiver 56. The liquid receiver 56 is a storage tank for the refrigerant. The liquid receiver 56 is positioned within the housing **The first sight glass 51 is operationally coupled between the filter assembly 40 and the compressor 52. The first sight glass 51 is for providing a visual indication (i.e.
visualisation) of refrigerant gas and liquid flow. The first sight glass 51 is positioned such that the first sight glass 51 is visible from the top wall 24 of the housing The second sight glass 55 is operationally coupled between the condenser 53 and the liquid receiver 56. The second sight glass 55 is for providing a visual indication (i.e.
visualisation) of refrigerant gas and liquid flow. The second sight glass 55 is positioned such that the second sight glass 55 is visible from the top wall 24 of the housing The refrigerant outlet assembly 60 further comprises a second high pressure liquid hose member 66, a second valve means in the form of schreder valve 64, and a third hand valve 63.
The second high pressure liquid hose member 66 includes a first end and a second end.
The first end of the second high pressure liquid hose member 66 is removably couplable to H:Vmcamp\kcp\etype\P45952 Amended Pages Claims Daniels June 06.doc 16/06/06 the refrigeration system 2 to be serviced. The second high pressure liquid hose member 66 is for facilitating the flow of refrigerant from the apparatus 10 back into the refrigeration system 2 to be serviced.
The second schreder valve 64 is positioned on a face of a side wall 22 of the housing The second scheder valve 64 is for maintaining a closed system when the second high pressure liquid hose member 66 is not connected to the second schreder valve 64 and for coupling the apparatus 10 to the refrigeration system 2 when the second end of the second high pressure liquid hose member 66 is coupled to the second schreder valve member 64.
The second schreder valve 64 is coupled to the compressor/condenser assembly The third hand valve 62 is coupled between the compressor/condenser assembly 50 and the second schreder valve 64. The third hand valve 62 has a valve portion and a handle actuation portion 63. The handle portion 63 extends from a side wall 22 of the housing for facilitating the opening and closing of the third hand valve 62. The valve portion is positioned substantially within the housing In an embodiment the second schreder valve 64 comprises a inch schreder valve.
20 The housing 20 includes a handle 28, which is positioned on the top wall 24 of the housing The handle 28 is for facilitating transportation of the apparatus In use, the high pressure liquid hose member 32 is coupled to the refrigerant outlet of the refrigeration system 2 to be serviced. The second high pressure liquid hose member 66 is connected to the refrigerant inlet of the refrigeration system to be serviced. The first and third hand valves are opened and the refrigerant conditioning system is powered on. The system is run until the refrigeration system 2 has been fully flushed and cleaned. The system is then powered down, the first and third hand valves are closed, and the two high pressure liquid hose members are disconnected from the refrigeration system.
In use, the apparatus 10 acts to flush and clean the internals of the refrigeration system 2.
H:\mcamp\keep\rtype\P45952 Amended Pages Claims Danils June 06 doc 1/06/06 1 Typically, the apparatus 10 will be used in relation to a refrigeration system 2 which had previously developed a leak and therefore is depleted of refrigerant. Prior to connection of the apparatus 10 with the system 2, the leak in system 2 will need repair. Once this is done, the apparatus 10 is connected and the refrigerant held within the liquid receiver 56 is circulated through the system 2. The refrigerant, as it passes through the internals of the system 2 collects debris and other contaminants which are then channeled through the filter 44 for separation from the refrigerant which is then compressed through compressor 52, and condensed back into a liquid through condenser 53. By monitoring of sight classes 51 and 55, as well as the pressure gauge 37, an operator can detect when the system 2 has been adequately flushed and cleaned. In this regard, when the refrigerant passing through sight glasses 51 and 55 is visually detected as having the same clarity, and the gauge 36 shows a vacuum then the apparatus 10 may be powered down and disconnected.
Now that an embodiment of the invention has been described in detail it will be apparent to those skilled in the relevant arts that numerous modifications and variations may be made 9 without departing from the basic inventive concepts. For example, valves 42, 46 and 64 are described as being hand valves. However, any one or all of these valves may be replaced by solenoid valves each having actuation portions in the form of switches disposed on the housing for operator actuation.
All such modifications and variations together with others that would be obvious to a person of ordinary skill in the art are deemed to be within the scope of the present invention the nature of which is to be determined from the above description and appended claims.
oooooo H:\mcamp\kcpVetype\P45952 Amendcd Pages Claims Daniels June 06 doc 16/06/06
Claims (11)
1. Apparatus for cleaning and flushing a refrigeration system comprising: a housing; a refrigerant inlet assembly disposed in said- housing and adapted for interfacing with a refrigeration system to be serviced said refrigerant inlet assembly comprising a high pressure liquid hose member having a first end and a second end, said first end of said high pressure liquid hose member being removably couplable to the refrigeration system to be serviced, said high pressure liquid hose member facilitating the flow of refrigerant from the refrigeration system to be serviced into said apparatus; and a first valve means positioned on a wall of said housing, said first valve means maintaining a closed system when said high pressure liquid hose member is not connected to said first valve means and coupling said apparatus to the refrigeration system to be serviced when said second end of said high pressure liquid hose member is coupled to said first valve means; a filter assembly coupled to said refrigerant inlet assembly such that a 20 refrigerant flowing through said refrigerant inlet assembly flows into said filter assembly; a compressor/condenser assembly coupled to said filter assembly such that the refrigerant flows from said filter assembly into said compressor/condenser assembly, said compressor/condenser assembly being positioned within said 25 housing, said compressor/condenser assembly having a liquid receiver containing a volume of the refrigerant; and a refrigerant outlet assembly adapted for interfacing with a refrigerant input of said refrigeration system to be serviced, said refrigerant outlet assembly being coupled to said compressor/condenser assembly such that when said refrigerant 3 0 inlet assembly and said refrigerant outlet assembly are coupled to the refrigeration system to be serviced a closed system is established for the flow of the volume of H:\ncamp\keep\retype\P45952 Amended Pages Claims Daniels June 06.doc 16/06/06 -13- refrigerant, said compressor/condenser assembly re-circulated said volume of refrigerant through said refrigeration system to be serviced whereby said volume of refrigerant cleans and flushes said refrigeration system.
2. The apparatus of claim 1, wherein said refrigerant inlet assembly further comprises a pressure gauge operationally coupled to said first valve means for monitoring the input pressure from the refrigeration system to be serviced to said apparatus.
3. The apparatus of claim 2, wherein said first valve means is a schreder valve.
4. The apparatus of claim 2 or 3, wherein said pressure gauge member has an operational range of 0-30 inches of mercury. The apparatus according to any one of claims 1 4, wherein said filter assembly comprises: a first valve coupled to said refrigerant inlet assembly, said first valve having a first valve portion and an actuation portion, said actuation portion :o ~accessible from outside of said housing for facilitating the opening and closing of said first valve, said first valve portion being positioned substantially within said 20 housing; a filter member coupled to said first valve, said filter member being adapted for removing particulate materials and other contaminants from the refrigerant, said filter member being coupled to said first valve; and a second valve having an actuation portion accessible from outside of said housing, said second valve being closeable to maintain a closed system when said filter member is being replaced, said second valve being normally left open during operation, said second valve being coupled to said filter member.
6. The apparatus according to any one of claims 1 5, wherein said compressor/condenser assembly comprises: a compressor coupled to said filter assembly such that refrigerant flowing H:\Kcamp\keepxretype\P45952 Amended Pages Claims Daniels June 06.doc 16/06/06 -14- from said filter assembly flows into said compressor, said compressor drawing said refrigerant through said refrigeration system to be serviced, said compressor being positioned within said housing; and, a condenser coupled to said compressor such that refrigerant flowing from said compressor flows into said condenser, said condenser being adapted for converting the refrigerant into a liquid and dumping said liquid into said liquid receiver, said condenser being positioned within said housing.
7. The apparatus according to claim 6, wherein said compressor/condenser assembly comprises a condenser fan positioned substantially within said housing, said housing having an opening adjacent to said condenser fan for facilitating the flow of air over a surface of said condenser for heat transfer.
8. The apparatus according to any one of claims 5-7 wherein one or both of said first valve and said second valve is a solenoid valve or a hand valve.
9. The apparatus according to any one of claims 6-8, wherein said compressor/condenser assembly further comprises: a first and second sight glass, said first sight glass being operationally 20 coupled between said filter assembly and said compressor, said first sight glass providing visualisation of refrigerant gas and liquid flow, said first sight glass being positioned such that said first sight glass is visible from outside said housing; said second sight glass being operationally coupled between said condenser and said liquid receiver, said second sight glass providing a visualisation of 25 refrigerant gas and liquid flow, said second sight glass being positioned such that said second sight glass is visible from outside said housing. •o oo The apparatus according to any one of claims 1-9, wherein said refrigerant outlet assembly further comprises: a second high pressure liquid hose member having a first end and a second end, said first end of said second high pressure liquid hose member being H:ncmpUkerpctyp\P45952 Amnded Pages Claims Daniels June 06.doe 16/06/06 removably couplable to the refrigeration system to be service, said second high pressure liquid hose member facilitating the flow of refrigerant from said apparatus back into the refrigeration system to be serviced; a second valve means positioned on said housing, said second valve means maintaining a closed system when said second high pressure liquid hose member is not connected to said second valve means and for coupling said apparatus to the refrigeration system to be serviced when said second end of said second high pressure liquid hose member is coupled to said second valve means, said second valve means being coupled to said compressor/condenser assembly; and a third valve coupled between said compressor/condenser assembly and said second valve means, said third valve having a third valve portion and a third actuation portion, said third actuation portion accessible from outside of said housing for facilitating the opening and closing of said third valve, said third valve portion being positioned substantially within said housing.
11. The apparatus of claim 10, wherein said second valve means is a schreder valve.
12. The apparatus according to any one of claims 1-11, wherein said housing includes a handle positioned on said wall of said housing, said handle being for facilitating 20 transportation of said apparatus.
13. An apparatus for flushing and cleaning of a refrigeration system substantially as herein before described with reference to and as illustrated in the accompanying drawings. 0- Dated this 16th day of June 2006 Frank J Daniel By his Patent Attorneys GRIFFITH HACK Fellows Institute of Patent and Trade Mark Attorneys of Australia H:mcamp\kecpVetypc\P45952 Amended Paes Claims Daniels June06 doc 16/06/06
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU47543/02A AU784967B2 (en) | 2002-06-13 | 2002-06-13 | Apparatus for flushing and cleaning a refrigeration system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU47543/02A AU784967B2 (en) | 2002-06-13 | 2002-06-13 | Apparatus for flushing and cleaning a refrigeration system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| AU4754302A AU4754302A (en) | 2003-12-18 |
| AU784967B2 true AU784967B2 (en) | 2006-08-10 |
Family
ID=34109458
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU47543/02A Ceased AU784967B2 (en) | 2002-06-13 | 2002-06-13 | Apparatus for flushing and cleaning a refrigeration system |
Country Status (1)
| Country | Link |
|---|---|
| AU (1) | AU784967B2 (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4887435A (en) * | 1988-06-23 | 1989-12-19 | Anderson Jr David W | Refrigeration cleaning and flushing system |
| US5036675A (en) * | 1988-06-23 | 1991-08-06 | Anderson Marine Enterprises, Inc. | Refrigeration cleaning and flushing system |
| CA2045257A1 (en) * | 1990-06-22 | 1991-12-23 | Hocine Aichaoui | Acyl benzoxazolinones, their preparation process and the pharmaceutical compositions containing them |
-
2002
- 2002-06-13 AU AU47543/02A patent/AU784967B2/en not_active Ceased
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4887435A (en) * | 1988-06-23 | 1989-12-19 | Anderson Jr David W | Refrigeration cleaning and flushing system |
| US5036675A (en) * | 1988-06-23 | 1991-08-06 | Anderson Marine Enterprises, Inc. | Refrigeration cleaning and flushing system |
| CA2045257A1 (en) * | 1990-06-22 | 1991-12-23 | Hocine Aichaoui | Acyl benzoxazolinones, their preparation process and the pharmaceutical compositions containing them |
Also Published As
| Publication number | Publication date |
|---|---|
| AU4754302A (en) | 2003-12-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DK2665611T3 (en) | Vessel air conditioner service equipment and methods for using it, especially for self cleaning | |
| US5353603A (en) | Dual refrigerant recovery apparatus with single vacuum pump and control means | |
| US20070113894A1 (en) | Methods and systems for performing, monitoring and analyzing multiple machine fluid processes | |
| US20110062091A1 (en) | Liquid Vacuuming And Filtering Device And Method | |
| KR20090106457A (en) | Vacuum line clean-out separator system | |
| US5189881A (en) | Refrigerant recovery apparatus and method | |
| US5819784A (en) | Water purifier having a water discharge valve for draining water storage tanks | |
| CA2877491C (en) | Convertible refrigerant recovery, recycle, and recharge system | |
| AU784967B2 (en) | Apparatus for flushing and cleaning a refrigeration system | |
| US5379605A (en) | Method for cleaning air conditioning system | |
| JP4097440B2 (en) | Oil / water separation and recovery equipment | |
| US6745782B2 (en) | Systems and methods for cleaning oxygen lines | |
| US5429753A (en) | HVAC heat transfer fluid recycling | |
| US6951222B2 (en) | Radiator cleaning device | |
| BRPI0607745B1 (en) | device associated with a tab to clear or widen such a tab | |
| US7431039B2 (en) | Cleaning facility for tubing system of vehicle | |
| KR101999391B1 (en) | refrigerant pipe cleaning equipment and cleaning method using the same | |
| US7033508B2 (en) | Contaminant flushing device, system, and method, particularly suited for refrigeration system servicing | |
| KR20020059236A (en) | A cleaning apparatus of fluid transport pipe in a condenser | |
| CN214582764U (en) | Three-cavity cleaning ball receiving and dispatching device | |
| JP2004219019A (en) | Air-conditioning system, and outdoor unit thereof | |
| JPS6034350Y2 (en) | Water supply and drainage equipment for laboratory safety cabinets | |
| JP3600610B2 (en) | Cleaning equipment for air conditioning systems | |
| JP2003156270A (en) | Pipeline washing device and pipeline washing method | |
| JP2004278859A (en) | Piping flushing device and piping flushing method |