A novel microisolation container for laboratory animals or other species includes a rectangular, transparent base containing an intake port at the lower front end and a detachable top sealingly attached to the base which contains an exhaust port in the end opposite the intake port. The intake and ex
A novel microisolation container for laboratory animals or other species includes a rectangular, transparent base containing an intake port at the lower front end and a detachable top sealingly attached to the base which contains an exhaust port in the end opposite the intake port. The intake and exhaust ports are preferably covered with a filter membrane which excludes airborne contaminants. The interior of the top is contoured to provide a domed sloping ceiling for the container, the lower portion being adjacent the intake or front end of the container and the upper portion being adjacent the exhaust or rear end. Preferred embodiments include a feeder assembly which is supported by perforated supports which serve as shelter for the animals. The front and rear ports, the contoured ceiling and the feeder design aid in the laminar flow of air through the cage. A perforated floor, absorbent insert and disposable waste bag can be included in the base of the cage.
대표청구항▼
A novel microisolation container for laboratory animals or other species includes a rectangular, transparent base containing an intake port at the lower front end and a detachable top sealingly attached to the base which contains an exhaust port in the end opposite the intake port. The intake and ex
A novel microisolation container for laboratory animals or other species includes a rectangular, transparent base containing an intake port at the lower front end and a detachable top sealingly attached to the base which contains an exhaust port in the end opposite the intake port. The intake and exhaust ports are preferably covered with a filter membrane which excludes airborne contaminants. The interior of the top is contoured to provide a domed sloping ceiling for the container, the lower portion being adjacent the intake or front end of the container and the upper portion being adjacent the exhaust or rear end. Preferred embodiments include a feeder assembly which is supported by perforated supports which serve as shelter for the animals. The front and rear ports, the contoured ceiling and the feeder design aid in the laminar flow of air through the cage. A perforated floor, absorbent insert and disposable waste bag can be included in the base of the cage. otate the first and the second portions of the shaft. 7. The compressor-pump unit of claim 1, wherein the driving device includes an electric motor having a rotor coupled with a third portion of the shaft to rotate the first and the second portions of the shaft, the electric motor being disposed within the housing. 8. The compressor-pump unit of claim 7, wherein the compressor has a discharge pathway for transmitting compressed gaseous refrigerant from the compressor to the compressor refrigerant outlet of the housing and wherein the compressor-pump unit further includes a liquid injection pipe having an inlet on the pump refrigerant outlet of the housing and an outlet on the discharge pathway of the compressor, the liquid injection pipe being wholly contained within the housing. 9. The compressor-pump unit of claim 7, wherein the electric motor is interposed between the compressor and the pump. 10. The compressor-pump unit of claim 9, wherein the housing includes a pump cooling, refrigerant pathway for directing the gaseous refrigerant between the refrigerant inlet in the housing for the compressor and the compressor such that the gaseous refrigerant flows over and contacts a pump casing of the pump, whereby the gaseous refrigerant absorbs heat from the liquid refrigerant, through the pump casing, prior to the liquid refrigerant being discharged from the pump. 11. The compressor-pump unit of claim 9, the housing including a motor-cooling, refrigerant pathway for directing the gaseous refrigerant between the refrigerant inlet in the housing for the compressor and the compressor, wherein the electric motor is positioned within the motor cooling pathway to be cooled through contact with the gaseous refrigerant. 12. A combined refrigeration unit having a refrigeration compressor for compressing gaseous refrigerant and a liquid refrigerant pump for receiving and discharging a liquid refrigerant, the combined refrigeration system comprising: a liquid pre-cooling heat exchanger circuit connected to the liquid refrigerant pump and exposed to the gaseous refrigerant, the gaseous refrigerant absorbing heat from the liquid refrigerant within the liquid pre-cooling heat exchanger circuit, prior to the liquid refrigerant entering the liquid pump, wherein the pre-cooling heat exchanger circuit is a tube. 13. The combined refrigeration unit of claim 12 wherein the liquid refrigerant has a temperature at or below the saturation temperature of the liquid refrigerant prior to entering the liquid pump. 14. A method of enhancing the operational efficiency of a combined refrigeration system having a refrigeration compressor for compressing gaseous refrigerant and a liquid refrigerant pump for receiving and discharging a liquid refrigerant, the method comprising the steps of: exposing the liquid refrigerant within a pre-cooling circuit to the gaseous refrigerant prior to the liquid refrigerant entering the liquid pump; enclosing the refrigeration compressor and the liquid refrigerant pump within a sealable housing; providing the pre-cooling circuit within the housing, the liquid refrigerant flowing through the pre-cooling circuit; and exposing the pre-cooling circuit to the gaseous refrigerant. 15. The method of claim 14, and further comprising: lowering the temperature of the liquid refrigerant to a temperature at or below the saturation temperature of the liquid refrigerant prior to entering the liquid pump. 16. The method of claim 14, wherein the pre-cooling circuit is a tube. 17. The method of claim 14 wherein the pre-cooling circuit is a space defined between the gaseous refrigeration and the liquid pump. 18. A compressor-pump unit for use in a vapor-compression refrigeration system, the compressor-pump unit comprising: a driving device including a rotatable shaft; a compressor, coupled with a first portion of the shaft, for compressing gaseous refrigerant within the vapor-compression refrigeration system; a liquid pump
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