Method and apparatus for providing additive fluids to refrigerant circuit
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B67D-007/36
F25B-045/00
B60H-001/00
출원번호
US-0276808
(2011-10-19)
등록번호
US-9297563
(2016-03-29)
발명자
/ 주소
Eggen, Mark
Eggen, Phil
Erdek, Paul
출원인 / 주소
TIRE SEAL, INC.
대리인 / 주소
Akerman LLP
인용정보
피인용 횟수 :
0인용 특허 :
50
초록▼
A refrigerant additive supply device can include an outer rigid container, an inner flexible bag positioned in the outer rigid container and defining a space therebetween where the inner flexible bag contains an additive without a refrigerant, a valve in fluid communication with the inner flexible b
A refrigerant additive supply device can include an outer rigid container, an inner flexible bag positioned in the outer rigid container and defining a space therebetween where the inner flexible bag contains an additive without a refrigerant, a valve in fluid communication with the inner flexible bag, an actuator operably coupled to the valve, and a propellant sealed within the space, where the inner flexible bag has a device pressure that allows flow of the additive into a refrigerant circuit when the actuator is depressed. Other embodiments are disclosed.
대표청구항▼
1. A refrigerant additive supply device comprising: an outer rigid container having a gas propellant sealed therein;an inner flexible bag positioned in the outer rigid container, the inner flexible bag containing a refrigerant system additive without a refrigerant and sealed from the gas propellant;
1. A refrigerant additive supply device comprising: an outer rigid container having a gas propellant sealed therein;an inner flexible bag positioned in the outer rigid container, the inner flexible bag containing a refrigerant system additive without a refrigerant and sealed from the gas propellant;a fluid path configured to fluidically couple the inner flexible bag to a refrigerant circuit containing refrigerant;a fluid conveying tube defining at least part of the fluid path;a fitting coupled to the fluid conveying tube and structured to connect to a refrigerant circuit connector, the fitting comprising a locking sleeve and a locking tab, wherein the locking sleeve is configured to retain the locking tab in a locked position; anda valve positioned within the fluid path and in fluid communication with the inner flexible bag, the valve structured to prevent backflow of fluid such that refrigerant system additive flows therethrough away from the inner flexible bag while backflow of fluid toward the inner flexible bag is substantially prevented;wherein the gas propellant is at a positive and above ambient pressure configured to cause the flow of the refrigerant system additive through the fluid path valve and into the refrigerant circuit at a positive and above ambient pressure of at least 30 psi, when an actuator is actuated such that the refrigerant system additive is not pre-mixed with refrigerant prior to the refrigerant system additive exiting the inner flexible bag. 2. The device of claim 1, wherein the fitting is selected from the group consisting of a quick-connect fitting and a threaded fitting. 3. The device of claim 1, wherein the refrigerant system additive comprises at least one of fluid and powder. 4. The device of claim 1, wherein the refrigerant system additive comprises at least one of compressor lubricant, leak detection dye, leak stop material, and refrigerant performance enhancer. 5. The device of claim 1, wherein the refrigerant system additive comprises at least one of fluid and powder. 6. The device of claim 1, wherein the refrigerant system additive comprises at least one of compressor lubricant, leak detection dye, leak stop material, and refrigerant performance enhancer. 7. A refrigerant additive supply device comprising: an outer rigid container comprising a single opening to an exterior of the outer rigid container;an inner flexible bag positioned in the outer rigid container and defining a space therebetween, the inner flexible bag containing a refrigerant system additive without a refrigerant;a valve in fluid communication with the inner flexible bag and engaged with a rim of the outer rigid container;an actuator operably coupled to the valve, the actuator and valve being positioned within the single opening to the exterior of the outer rigid container and forming an airtight connection with the rim of the outer rigid container;a fluid conveying tube coupled to the actuator and in fluid communication with the inner flexible bag;a fitting coupled to the fluid conveying tube and configured to connect to a refrigerant circuit connector, the fitting comprising a locking sleeve and a locking tab, wherein the locking sleeve is configured to retain the locking tab in a locked position; anda pressurized gas propellant sealed within the space between the inner flexible bag and the outer rigid container by the airtight connection such that a pressure within the space between the inner flexible bag and the outer rigid container is a positive and above ambient pressure, wherein the actuator is operable to open the valve during use such that pressure exerted on the inner flexible bag by the pressurized gas propellant between the inner flexible bag and the outer rigid container causes a flow of the refrigerant system additive through the valve and fluid conveying tube into a connected refrigerant circuit that is at a positive and above ambient pressure of at least 30 psi, but less than the pressure of the gas propellant, without any pre-existing refrigerant within the refrigerant circuit entering the inner flexible bag of the refrigerant additive supply device, and wherein, when open, the valve is structured to prevent backflow of fluid into the inner flexible bag. 8. The device of claim 7, wherein the space between the inner flexible bag and the outer rigid container is pressurized to a positive pressure above ambient pressure using an under-the-cup gassing process. 9. The device of claim 7, wherein the fitting is a quick-connect fitting. 10. The device of claim 7, wherein the fitting is a threaded fitting. 11. The device of claim 7, wherein the refrigerant system additive comprises at least one of fluid and powder. 12. The device of claim 7, wherein the refrigerant system additive comprises at least one of compressor lubricant, leak detection dye, leak stop material, and refrigerant performance enhancer. 13. A refrigerant additive supply device comprising: an outer container configured to contain a supply of gas propellant sealed within the outer container;an inner container positioned in the outer container, the inner container comprising a flexible material defining an inner volume configured to contain a refrigerant system additive without a refrigerant and sealed from the supply of gas propellant;a fluid path fluidically coupled with the inner volume, the fluid path configured to include a valve positioned therein, wherein the fluid path comprises a fluid conveying tube and a fitting for connection to a refrigerant circuit connector, wherein the fitting comprises a locking sleeve and a locking tab, and wherein the locking sleeve is configured to retain the locking tab in a locked position; andan actuator operatively coupled to the valve;wherein the gas propellant is pressurized to a positive and above ambient pressure such that, when the actuator is actuated, the pressure is configured to translate to the inner volume to cause flow of the refrigerant system additive through the valve toward a refrigerant circuit connected to the fitting and that contains refrigerant at a positive and above ambient pressure of at least 30 psi and wherein the valve is structured to substantially prevent backflow of refrigerant therethrough toward the inner volume when the actuator is actuated. 14. The refrigerant additive supply device of claim 13, wherein the inner container comprises a reconfigurable shape. 15. The refrigerant additive supply device of claim 14, wherein the inner container comprises a flexible bag having the reconfigurable shape. 16. The refrigerant additive supply device of claim 13, wherein the valve is positioned to substantially prevent pre-mixing of the refrigerant system additive with refrigerant prior to the refrigerant system additive entering the refrigerant circuit. 17. A refrigerant additive supply device comprising: an outer container configured to contain a supply of gas propellant pressurized above ambient pressure and sealed within the outer container;an inner container positioned in the outer container, the inner container defining an inner volume containing a refrigerant system additive without a refrigerant and sealed from the supply of gas propellant;a fluid path configured to fluidically couple the inner volume to a refrigerant circuit containing refrigerant at a positive and above ambient pressure of at least 30 psi, wherein the fluid path comprises a fluid conveying tube and a fitting for connection to a connector of the refrigerant circuit, wherein the fitting comprises a locking sleeve and a locking tab, and wherein the locking sleeve is configured to retain the locking tab in a locked position; andan arrangement of one or more valves positioned within the fluid path, the arrangement of one or more valves comprising an open configuration and a closed configuration, wherein, in the closed configuration, fluid flow through the arrangement of one or more valves is prevented, and wherein, in the open configuration, fluid flow through the arrangement of one or more valves is allowed away from the inner volume but backflow toward the inner volume is substantially prevented;wherein the inner container comprises a flexible material allowing pressure from pressurized gas propellant to translate to the inner volume to cause a flow of the refrigerant system additive away from the inner volume through the arrangement of one or more valves when the arrangement of one or more valves is in the open configuration. 18. The refrigerant additive supply device of claim 17, wherein the arrangement of one or more valves comprises a first valve operatively couplable to an actuator configured to open the first valve to allow fluid to flow therethrough, anda second valve structured to prevent backflow of fluid such that fluid may flow therethrough away from the internal volume but is prevented from flowing therethrough toward the internal volume. 19. The refrigerant additive supply device of claim 18, wherein, when the fluid path couples the inner volume to the refrigerant circuit, the second valve is positioned to substantially prevent pre-mixing of the refrigerant system additive with refrigerant prior to the refrigerant system additive entering the refrigerant circuit. 20. A refrigerant additive supply device comprising: an outer container configured to contain a supply of gas propellant pressurized above ambient pressure and sealed within the outer container; andan inner container defining an inner volume and positioned in the outer container, the inner volume configured to be sealed from the supply of gas propellant and contain a refrigerant system additive without a refrigerant, wherein the inner volume is configured to fluidically couple to a refrigerant circuit containing a refrigerant at a positive and above ambient pressure of at least 30 psi, via a valved fluid path, wherein the valved fluid path is structured to be operable to allow fluid flow away from the inner volume while substantially preventing backflow of fluid toward the inner volume, and wherein the inner container comprises a flexible material allowing pressure from pressurized gas propellant to translate to the inner volume to cause a flow of the refrigerant system additive through the valved fluid path away from the inner volume;the valved fluid path comprises a fluid conveying tube, a fitting for connection to a connector of the refrigerant circuit, and an actuator operable to open the valved fluid path to allow the flow of the refrigerant system additive therethrough away from the inner volume, wherein the fitting comprising a locking sleeve and a locking tab, and wherein the locking sleeve is configured to retain the locking tab in a locked position.
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