Refrigerated display cabinet

Claim 1

In a refrigerated display cabinet comprising an external housing, an internal housing within the external housing for storing merchandise, a front opening for access to the interior of said internal housing, passage means formed between said external and internal housing including inner and outer conduits interconnecting respective inlets and outlets extending across opposed edges of said front opening, circulating means for driving air around said passages means from said outlets to said inlets in the form of inner and outer air curtains, and refrigerating means in the inner conduit for refrigerating the inner curtain of air, the improvement comprising said refrigerating means including a compressor, a condenser and two evaporators, the inlet sides of said evaporators being connected with one another by a first passage line in which first and second decompression devices with check valves disposed in series with located said line having the ends thereof communicated with said compressor through valve devices, said evaporators having their outlet sides connected with one another by a second passage line in which two check valve devices are disposed in series with the ends of said second line respectively connected to said compressor through valve devices, and said first and second passage lines being connected with one another and connected to said condenser through a valve device.