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A safety heat exchanger for combining a heat pump with a device of a drinking water supply facility for obtaining heat from drinking water. The heat exchanger includes a primary circulation loop (4) with drinking water, a secondary circulation loop (6) with antifreeze as a material that does not pos

A safety heat exchanger for combining a heat pump with a device of a drinking water supply facility for obtaining heat from drinking water. The heat exchanger includes a primary circulation loop (4) with drinking water, a secondary circulation loop (6) with antifreeze as a material that does not pose a health risk, and a tertiary circulation loop (7) with a coolant. The primary circulation loop (4) includes an inlet (3) connected to a drinking water supply facility and an outlet (5) with electrically controllable magnetic valves (16). The secondary circulation loop (6) and tertiary circulation loop (7) each have any dedicated difference pressure monitor (9, 18), which difference pressure monitors (9, 18) are controllably connected with the magnetic valves (16) such that when the difference pressure monitors (9, 18) detects a pressure difference in the secondary circulation loop (6) and/or in the tertiary circulation loop (7), the inlet (3) and the outlet (5) of the drinking water to the drinking water facility are closed, wherein the difference pressure monitor (9) of the secondary circulation loop (6) comprises an expansion vessel (11), a safety valve (12) and a manometer (13).

대표청구항 ▼

1. A safety heat exchanger for combining a heat pump with a device of a drinking water supply facility for obtaining heat from drinking water, comprising a primary circulation loop (4) with drinking water,a secondary circulation loop (6) containing antifreeze as a material that does not pose a healt

1. A safety heat exchanger for combining a heat pump with a device of a drinking water supply facility for obtaining heat from drinking water, comprising a primary circulation loop (4) with drinking water,a secondary circulation loop (6) containing antifreeze as a material that does not pose a health risk, anda tertiary circulation loop (7) with a coolant,wherein the primary circulation loop (4) includes an inlet (3) connected to a drinking water supply facility and an outlet (5) with electrically controllable magnetic valves (16), wherein the secondary circulation loop (6) and tertiary circulation loop (7) each have a dedicated difference pressure monitor (9, 18), which difference pressure monitors (9, 18) are controllably connected with the magnetic valves (16) such that when the difference pressure monitors (9, 18) detects a pressure difference in the secondary circulation loop (6) and/or in the tertiary circulation loop (7), the inlet (3) and the outlet (5) of the drinking water to the drinking water facility are closed, wherein the difference pressure monitor (9) of the secondary circulation loop (6) comprises an expansion vessel (11), a safety valve (12) and a manometer (13). 2. The safety heat exchanger according to claim 1, wherein the pressure in the primary circulation loop (4) is either higher or lower than the pressure in the secondary circulation loop. 3. The safety heat exchanger according to claim 1, wherein the pressure in the primary circulation loop (4) is at least 4 bar and the secondary circulation loop (6) is set to a pressure of less than or equal to 2 bar, wherein the pressure in the tertiary circulation loop (7) is set to a significantly higher pressure of about 20 bar. 4. The safety heat exchanger according to claim 1, wherein a corresponding servo-controlled magnetic valve (16) is disposed in the primary circulation loop (4) in the inlet (3) to a circulation pump (14) and in the outlet (5) for the drinking water. 5. The safety heat exchanger according to claim 1, wherein the difference pressure monitor (9) in the secondary circulation loop (6) and the difference pressure monitor (18) in the tertiary circulation loop (7) are controllably connected in parallel. 6. The safety heat exchanger according to claim 1, wherein the difference pressure monitor (9) and the difference pressure monitor (18) for switching off the safety heat exchanger and for closing the magnetic valves (16) in parallel are controllably connected with a compressor (8), a circulation pump (14) and a feed pump (15) by way of a control circuit. 7. The safety heat exchanger according to claim 1, wherein the switching point of the difference pressure monitor (18) in the tertiary circulation loop (7) is at the pressure Pmin of 20 bar, wherein the difference pressure monitor (9) has a switching point at a pressure of Pmax=3 bar and at a pressure of Pmin=1.5 bar of the secondary circulation loop (6).