Patent EP0043162A1 successfully refreshed from Google Patents.
Patent US3848800A successfully refreshed from Google Patents.
US3848800A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Booster for central heating installation with automatic regulation
Assignee: TDK Micronas GmbH
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Filing: 1972-09-27
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Granted: 1974-11-19
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Expires: 1992-09-27
Abstract
Abstract A complex booster including a four-port mixer-valve is associated with a reduction-gear micromotor controlled by a signal from a room thermostat, in such a manner as to form a single-piece apparatus which is compact and easy to insert into a central heating installation. In addition, the complex booster is provided with a hydraulic regulator to select the most appropriate pressure-flow pump characteristic and thus a suitable operation point. Alternatives available include one in which a booster, mixer-valve and micromotor are arranged in line and two others wherein the booster is a side mixer-valve plus micromotor. The two last alternatives have advantages as to accessibility and maintenance and are easier to install in avoiding numerous pipe bends.
Inventors
- 👤 M Perche
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 06:59
CPC Classifications
F; F04; F04D; F04D15/00; F04D15/0005; F04D15/0016; F24; F24D; F24D3/00; F24D3/10; F24D3/105
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
126 words
Booster apparatus for automatically controlling the circulation of fluid in a heat exchanger system, comprising a pump adapted to be connected to a fluid circulating system, a first motor coupled to drive said pump, a hydraulic flow regulator mounted in said pump to enable selection of flow-pressure characteristics of said pump and thereby a suitable operation point, a rotatable valve associated with said pump to control the flow rate through the pump, a second motor coupled to control the position of said rotatable valve, control means responsive to signals from thermostatic control means to position said second motor and said rotatable valve and control flow through the pump accordingly, and means positioning the pump, the first motor and the second motor together in a common housing.
Claim 2
Dependent Claim
126 words
Booster apparatus for automatically controlling the circulation of fluid in a heat exchanger system, comprising a pump adapted to be connected to a fluid circulating system, a first motor coupled to drive said pump, a hydraulic flow regulator mounted in said pump to enable selection of flow-pressure characteristics of said pump and thereby a suitable operation point, a rotatable valve associated with said pump to control the flow rate through the pump, a second motor coupled to control the position of said rotatable valve, control means responsive to signals from thermostatic control means to position said second motor and said rotatable valve and control flow through the pump accordingly, and means positioning the pump, the first motor and the second motor together in a common housing.
Claim 3
Dependent Claim
40 words
The invention according to claim 1, in which the pump includes a port positioned between a pump impeller cavity and a connection pipe through the pump, and the hydraulic flow regulator consists of an adjustable cock mounted in said port.
Claim 4
Dependent Claim
15 words
The invention as claimed in claim 1, in which the valve is a multi-port valve.
Claim 5
Dependent Claim
33 words
The invention as claimed in claim 1, in which the second motor consists of a micromotor, and the micromotor is equipped with speed reduction means to regulate the position of the rotatable valve.
Claim 6
Dependent Claim
37 words
The invention as claimed in claim 4, in which the speed reduction means includes a planetary-gear-speed reduction means, and the micromotor is connected to the planetary-gear-speed reduction means via a driving pinion secured to the micromotor shaft.
Claim 7
Dependent Claim
41 words
The invention as claimed in claim 1, in which the rotatable valve is coupled to the second motor by a sleeve coupling device whereby the end of the motor output shaft is inserted in a sleeve integral with the rotatable valve.
Claim 8
Dependent Claim
45 words
The invention as claimed in claim 4, in which the control means includes a cam secured to the output speed reduction means and having a pattern so as to operate at least a switch to modify the ''''on'''' or ''''off'''' condition of the second motor.
Claim 9
Dependent Claim
28 words
A booster apparatus according to claim 1, in which said hydraulic flow regulator is located in the hydraulic circuit after the rotatable segment valve for processing mixed fluid.
Claim 10
Dependent Claim
27 words
A central heating installation with automatic temperature regulation including a booster apparatus according to claim 5, in which the micromotor-reduction-gear assembly operates a multi-port rotatable segment valve.
Claim 11
Dependent Claim
51 words
The invention as claimed in claim 1, in which the rotatable valve is a butterfly-valve to which the motor is coupled through a reduction-gear assembly, and the micromotor is responsive to a signal proportional to a difference in temperature from a desired level to adjust the position of said butterfly valve.
Claim 12
Dependent Claim
27 words
The invention as claimed in claim 1, in which the said reduction-gear assembly includes an output shaft which is coupled by a clutch to the rotatable valve.
Claim 13
Dependent Claim
20 words
A booster according to claim 11, in which a handle is rigidly joined to a shaft of the rotatable valve.
Claim 14
Dependent Claim
15 words
A booster according to claim 12, in which control is manually performed by said handle.
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) | 1977-11-18 | 1978-05-20 | 1978-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-18 | 1982-05-20 | 1982-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-18 | 1986-05-20 | 1986-11-19 | $7700.00 | Window Closed / Lapsed |