CA2176889A1 - Aspirator Water Circulation Apparatus - Google Patents
Aspirator Water Circulation ApparatusInfo
- Publication number
- CA2176889A1 CA2176889A1 CA 2176889 CA2176889A CA2176889A1 CA 2176889 A1 CA2176889 A1 CA 2176889A1 CA 2176889 CA2176889 CA 2176889 CA 2176889 A CA2176889 A CA 2176889A CA 2176889 A1 CA2176889 A1 CA 2176889A1
- Authority
- CA
- Canada
- Prior art keywords
- water
- heater
- unit
- building
- circulation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D17/00—Domestic hot-water supply systems
- F24D17/0078—Recirculation systems
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Domestic Hot-Water Supply Systems And Details Of Heating Systems (AREA)
- Domestic Plumbing Installations (AREA)
Abstract
A water circulation apparatus to provide instant hot water to faucets remote from the heater in residential and small commercial buildings when water is periodically used in the building. The apparatus comprises a body containing an aspirator and a check valve, and provisions for installation in the water supply line to the heater and cold water faucets.
It uses a small water return line from a tee installed in the hot water pipe near the remote faucet, to a connector on the water circulation unit, thereby establishing a circulation loop from the water heater, through the hot water pipe, the tee and return line, and through the water circulation unit back to the heater. The aspirator is a tapered bore in the body with a concentric nozzle positioned in the large end, and a low pressure tap located in the vicinity of the nozzle outlet. The check valve uses a neutrally buoyant poppet to minimize friction.
The unit is responsive to the user and is self regulating in that it causes water to flow in the circulation loop only when water is being used in the building. Water is conserved since there is no need to run water to waste awaiting hot water from the heater to reach the remote faucet. When the building is unoccupied, the unit is dormant, thus conserving heat that would be lost if the pipes were kept hot at all times. The unit needs no gas or electrical power, and operates with only one moving part.
It uses a small water return line from a tee installed in the hot water pipe near the remote faucet, to a connector on the water circulation unit, thereby establishing a circulation loop from the water heater, through the hot water pipe, the tee and return line, and through the water circulation unit back to the heater. The aspirator is a tapered bore in the body with a concentric nozzle positioned in the large end, and a low pressure tap located in the vicinity of the nozzle outlet. The check valve uses a neutrally buoyant poppet to minimize friction.
The unit is responsive to the user and is self regulating in that it causes water to flow in the circulation loop only when water is being used in the building. Water is conserved since there is no need to run water to waste awaiting hot water from the heater to reach the remote faucet. When the building is unoccupied, the unit is dormant, thus conserving heat that would be lost if the pipes were kept hot at all times. The unit needs no gas or electrical power, and operates with only one moving part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2176889 CA2176889C (en) | 1996-05-17 | 1996-05-17 | Aspirator water circulation apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2176889 CA2176889C (en) | 1996-05-17 | 1996-05-17 | Aspirator water circulation apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2176889A1 true CA2176889A1 (en) | 1997-11-18 |
| CA2176889C CA2176889C (en) | 2001-02-20 |
Family
ID=4158227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2176889 Expired - Fee Related CA2176889C (en) | 1996-05-17 | 1996-05-17 | Aspirator water circulation apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2176889C (en) |
-
1996
- 1996-05-17 CA CA 2176889 patent/CA2176889C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CA2176889C (en) | 2001-02-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |