US3759059A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refrigerated display cabinet
Assignee: SCHAEFER CORP
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Filing: 1971-12-30
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Granted: 1973-09-18
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Expires: 1991-12-30
Abstract
Abstract A cooling arrangement for the condenser of a refrigerated display cabinet, in which there is an upper refrigerated display chamber and a lower nonrefrigerated chamber with the condenser being located in the lower chamber, the cooling arrangement involving drawing in the ambient air through the front of the cabinet well above the floor and after it is used to cool the condenser, discharging it into the toe space of the cabinet adjacent the floor. The cabinet has a sloping front panel spaced from the insulated front wall of the cabinet and the cooling air is drawn in adjacent the top of this front panel. A portion of the air, after passing over the condenser, is directed over the condensate drain passage in the rear of the cabinet.
Inventors
- 👤 A Kenyon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:17
CPC Classifications
A; A47; A47F; A47F3/00; A47F3/04; A47F3/0482; F; F25; F25D; F25D21/00; F25D21/14; F25D23/00; F25D23/003; F25D2323/00; F25D2323/002; F25D2323/0022; F25D2323/0026; F25D2323/00264; F25D2323/0027; F25D2323/00274
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
187 words
A refrigerated display cabinet having an upper refrigerated display chamber and a lower nonrefrigerated chamber; a refrigerating system enclosing a condenser and an evaporator; said condenser being located in said lower chamber and said evaporator in heat exchange relationship with said upper refrigerated chamber; said cabinet having an air inlet in front thereof substantially above the bottom of said cabinet, an air duct beneath said condenser adjacent the bottom of said cabinet and having a rear opening adjacent the bottom and rear of the space in which said condenser is located, and an outlet in front of the cabinet adjacent the bottom thereof and communicating with the front of said air duct; and air circulating means in said cabinet for drawing air through said air inlet, through a portion of said lower cabinet, over said condenser for cooling the same, and out through said air duct and said air outlet, so that the air for cooling the condenser is drawn in through the front of the cabinet at an area substantially above the floor and is forced outwardly through the front of the cabinet adjacent the floor.
Claim 2
Dependent Claim
187 words
A refrigerated display cabinet having an upper refrigerated display chamber and a lower nonrefrigerated chamber; a refrigerating system enclosing a condenser and an evaporator; said condenser being located in said lower chamber and said evaporator in heat exchange relationship with said upper refrigerated chamber; said cabinet having an air inlet in front thereof substantially above the bottom of said cabinet, an air duct beneath said condenser adjacent the bottom of said cabinet and having a rear opening adjacent the bottom and rear of the space in which said condenser is located, and an outlet in front of the cabinet adjacent the bottom thereof and communicating with the front of said air duct; and air circulating means in said cabinet for drawing air through said air inlet, through a portion of said lower cabinet, over said condenser for cooling the same, and out through said air duct and said air outlet, so that the air for cooling the condenser is drawn in through the front of the cabinet at an area substantially above the floor and is forced outwardly through the front of the cabinet adjacent the floor.
Claim 3
Dependent Claim
109 words
The display cabineT of claim 1 in which the lower portion of the front of the cabinet has two spaced walls, the outer of which terminates at its upper edge at a level substantially above the top of the lower chamber, in which an imperforate panel extends across and above the space between the walls, in which said air inlet extends substantially vertically below said panel adjacent the upper edge of the outer of said spaced walls, and in which the space between said walls forms an air passage leading to said lower chamber and through which the air for cooling the condenser is drawn after entering said inlet.
Claim 4
Dependent Claim
48 words
The display cabinet of claim 2 in which the inner of said spaced walls is an insulated wall and extends downwardly to the bottom of said upper refrigerated chamber and the outer of which is a decorative wall which extends downwardly to substantially the bottom of said cabinet.
Claim 5
Dependent Claim
76 words
The display cabinet of claim 3 in which a transparent wall is disposed above said insulated wall and forms part of the enclosure of said upper refrigerated chamber, said panel extending forwardly from the bottom of said transparent wall across and above said space between said walls, and in which there is a substantially vertical grill between the forward portion of said panel and the upper edge of said outer wall and covering said air inlet.
Claim 6
Dependent Claim
57 words
The display cabinet of claim 1 in which there is a recessed portion adjacent the bottom of the cabinet to provide a ''''toe space'''', which recessed portion extends substantially the entire length of the cabinet and in which said air outlet opens into said toe space so that the discharge air is discharged into the toe space.
Claim 7
Dependent Claim
65 words
The display cabinet of claim 1 in which there is a drain passage extending from below said evaporator to conduct condensate from said evaporator to a point of collection for said condensate and means for conveying a portion of the air passing over said condenser in heat transfer relation with said drain passage so as to minimize the danger of freezing in said drain passage.
Claim 8
Dependent Claim
42 words
The display cabinet of claim 1 in which there is a base member spaced above the bottom of the cabinet and supporting the condenser and in which the air duct is bounded by said base member and the bottom of the cabinet.
Claim 9
Dependent Claim
110 words
The display cabinet of claim 7 in which the refrigerating system includes a compressor and in which there is a further base member spaced above the bottom of the cabinet to the rear of said previously named base member and spaced therefrom, said further base member acting to support said compressor and to form an upper wall of a rear extension of said air duct so that some of the air passing over said condenser passes between said base members forwardly through said duct and other of the air passing over the condenser also passes over the compressor and is forced forwardly through said rear extension of said air duct.
References Cited (Backward Citations)
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US2911799A
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US2882696A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-17 | 1977-03-19 | 1977-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-17 | 1981-03-19 | 1981-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-17 | 1985-03-19 | 1985-09-18 | $7700.00 | Window Closed / Lapsed |