US4078399A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Absorption type refrigerator
Assignee: Hitachi Ltd
•
Filing: 1976-09-08
•
Granted: 1978-03-14
•
Expires: 1996-09-08
Abstract
Abstract An arrangement of an evaporator, an absorber, a generator and a condensor within a shell of a single effect absorption type refrigerator or a multiple effect absorption type refrigerator, such as a double effect or triple effect type refrigerator. Positioned on opposite sides within the shell are an evaporator and a generator, and disposed therebetween are an absorber and a condensor. This arrangement presents an improved efficiency in terms of space to provide a compact type refrigerator.
Inventors
- 👤 Shigeo Sugimoto
- 👤 Michihiko Aizawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:11
CPC Classifications
F; F25; F25B; F25B15/00; F25B15/02; F25B15/06; Y; Y02; Y02A; Y02A30/00; Y02A30/27; Y02B; Y02B30/00; Y02B30/62
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
170 words
An absorption type refrigerator comprising: a shell, an evaporator disposed in a first space of the interior of the shell, a generator disposed in a second space of the interior of the shell, an absorber arranged in a third space of the interior of the shell, a condenser arranged in a fourth space of the interior of the shell, and connecting means operatively connecting said evaporator, generator, absorber, and condenser to effect an absorption refrigerating cycle, said first and second spaces being disposed at respective opposite locations in said shell with said third and fourth spaces disposed between said first and second spaced without any common boundary wall between said first and second spaces, thereby thermally isolating said evaporator and generator from one another, said fourth space being delimited in part by a first partition wall also delimiting a portion of said second space, said fourth space being separated from said first space by portions of said third space without any common boundary wall between said fourth and first spaces.
Claim 2
Dependent Claim
170 words
An absorption type refrigerator comprising: a shell, an evaporator disposed in a first space of the interior of the shell, a generator disposed in a second space of the interior of the shell, an absorber arranged in a third space of the interior of the shell, a condenser arranged in a fourth space of the interior of the shell, and connecting means operatively connecting said evaporator, generator, absorber, and condenser to effect an absorption refrigerating cycle, said first and second spaces being disposed at respective opposite locations in said shell with said third and fourth spaces disposed between said first and second spaced without any common boundary wall between said first and second spaces, thereby thermally isolating said evaporator and generator from one another, said fourth space being delimited in part by a first partition wall also delimiting a portion of said second space, said fourth space being separated from said first space by portions of said third space without any common boundary wall between said fourth and first spaces.
Claim 3
Dependent Claim
18 words
A refrigerator according to claim 1, wherein said first partition wall is constructed as a high pressure-side eliminator.
Claim 4
Dependent Claim
25 words
A refrigerator according to claim 1, wherein a low pressure-side eliminator forms a second partition wall defining the boundary between said first and third spaces.
Claim 5
Dependent Claim
45 words
A refrigerator according to claim 3, wherein said low pressure-side eliminator extends vertically substantially across the full extent of said shell at a location close to the center of the shell, whereby the total area of said low-pressure side eliminator is maximized within said shell.
Claim 6
Dependent Claim
24 words
A refrigerator according to claim 4, wherein said shell is cylindrically shaped with said low pressure-side eliminator extending vertically substantially diametrically across the shell.
Claim 7
Dependent Claim
18 words
A refrigerator according to claim 4, wherein said first partition wall is constructed as a high pressure-side eliminator.
Claim 8
Dependent Claim
47 words
A refrigerator according to claim 3, wherein said third space is further delimited by a third partition wall bordering also on said fourth space and a fourth partition wall bordering also on said second space, said third and fourth partition walls being constructed as heat insulation walls.
Claim 9
Dependent Claim
47 words
A refrigerator according to claim 5, wherein said third space is further delimited by a third partition wall bordering also on said fourth space and a fourth partition wall bordering also on said second space, said third and fourth partition walls being constructed as heat insulation walls.
Claim 10
Dependent Claim
30 words
A refrigerator according to claim 1, wherein said connecting means includes headers for cooling water pipe bundles in said absorber and condenser, said headers being formed integrally with one another.
Claim 11
Dependent Claim
42 words
A refrigerator according to claim 8, wherein said connecting means includes headers for cooling water pipe bundles in said absorber and condenser, said headers being formed integrally with one another, said headers being disposed at the underside of said cylindrically shaped shell.
Claim 12
Dependent Claim
40 words
A refrigerator according to claim 1, wherein said third space is bounded at one side thereof by a common partition wall with said first space and at the opposite side thereof by a common partition wall with said second space.
Claim 13
Dependent Claim
29 words
A refrigerator according to claim 7, wherein said third partition wall is a single straight wall extending from the inside surface of said shell to said fourth partition wall.
Claim 14
Dependent Claim
41 words
A refrigerator according to claim 7, wherein said third partition wall includes a vertical section extending downwardly from the inside surface of said shell and a horizontal section extending from the bottom of said vertical section to said fourth partition wall.
Claim 15
Dependent Claim
28 words
A refrigerator according to claim 7, wherein a duct connecting the bottom of said fourth space with the bottom of said first space extends across said third space.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-03-13 | 1981-09-12 | 1982-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-03-13 | 1985-09-12 | 1986-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-03-13 | 1989-09-12 | 1990-03-14 | $7700.00 | Window Closed / Lapsed |