EP0359901B1 - Mischvorrichtung für eine Warmwasserheizungsanlage - Google Patents

Mischvorrichtung für eine Warmwasserheizungsanlage Download PDF

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Publication number
EP0359901B1
EP0359901B1 EP89106958A EP89106958A EP0359901B1 EP 0359901 B1 EP0359901 B1 EP 0359901B1 EP 89106958 A EP89106958 A EP 89106958A EP 89106958 A EP89106958 A EP 89106958A EP 0359901 B1 EP0359901 B1 EP 0359901B1
Authority
EP
European Patent Office
Prior art keywords
mixer
valve
mixing device
hot water
heating
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.)
Expired - Lifetime
Application number
EP89106958A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0359901A1 (de
Inventor
Günter Naasner
Günter Strelow
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wilo GmbH
Original Assignee
Wilo Werk GmbH and Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Wilo Werk GmbH and Co filed Critical Wilo Werk GmbH and Co
Priority to AT89106958T priority Critical patent/ATE68048T1/de
Publication of EP0359901A1 publication Critical patent/EP0359901A1/de
Application granted granted Critical
Publication of EP0359901B1 publication Critical patent/EP0359901B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/0027—Varying behaviour or the very pump
    • F04D15/0033—By-passing by increasing clearance between impeller and its casing

Definitions

  • the invention relates to a mixing device for a hot water heating system with a mixing valve having a rotary valve mixing chamber, which is connected to the lines of the boiler flow and return as well as the heating flow and return, depending on the position of the rotary valve of the mixer, the heating flow and the boiler return a more or less warm mixture of the boiler flow and the heating return is supplied by a pump, whereby heating water is fed to a hot water tank (see NL-A-6711733) and a valve is arranged in the heating flow, which branches off the heating water for the hot water tank.
  • the object of the invention is to provide a mixing device for a hot water heating system of the type mentioned, which requires only one pump and only one servomotor.
  • the device Due to the non-positive and / or positive connection of the actuators from the mixer and the valve, all functional positions can be achieved by a single servomotor, i.e. in addition to the servomotor of the mixer, a further servomotor is not required, but that of the mixer simultaneously actuates the valve actuator that the heating water leads to the hot water tank. It is particularly advantageous that, due to the coupling of the two actuators, they always assume corresponding positions, so that a malfunction is prevented with the greatest possible certainty.
  • the device is structurally simple and of small external dimensions.
  • a particularly simple construction is achieved if the actuator of the valve is made in one piece with the rotary slide valve of the mixer. This too will proposed that the actuator of the valve is arranged coaxially with the rotary valve of the mixer. For this purpose, the mixer and valve should also be arranged in the same housing.
  • valve completely closes the line to the heating circuit when the line to the hot water tank is opened. It is also proposed that when the line to the hot water tank is opened, the valve of the mixer separates the boiler flow from the boiler return and the boiler flow is connected to the hot water tank inlet via the pump. This ensures that the heating circuit is completely separated from the boiler circuit when the hot water tank is supplied with heating water.
  • the mixer can optionally be used as a three-way and four-way mixer
  • the mixer be bridged by a lockable bypass that connects the boiler return to the heating return and during this connection separates the boiler return from the mixing chamber of the mixer. This makes it possible to obtain a three-way or four-way mixer by blocking the bypass or the connecting line without having to make any modifications.
  • the same housing can therefore be used for both types of mixer.
  • the mixer is bridged by a lockable bypass that connects the heating return with the heating flow. This can ensure that the control range of the mixer is not too small in the case of large temperature differences between the boiler circuit and the heating circuit.
  • shut-off valve of the bypass can be arranged in the housing of the mixer.
  • the housing of the mixer is disc-shaped.
  • the housing of the mixer can be fastened with a flat side to a flat side of the pump, so that a sandwich-like construction can be achieved which continues the teaching according to German Offenlegungsschrift 3624917. It is also advantageous here if the inlets and outlets open into the flat sides of the pump and mixing housing and are aligned with one another.
  • a particularly safe mixing device that is easy to control by the servomotor is created when the working positions of the rotary valve and the valve actuator are divided into 60 degree steps.
  • the device is particularly advantageous in terms of its construction, assembly and maintenance if the pumps are attached to one side of the mixer housing and the actuator of the mixer is attached to the opposite side.
  • An impeller (not shown), which is driven by a canned motor 2, runs in a pump housing 1.
  • the pump housing side wall 3 facing away from the motor 2 is perpendicular to the impeller axis and has in the side wall surface both an inlet opening 4 coaxial with the impeller axis and an outlet opening 5 laterally offset from it.
  • a disk-shaped housing 6 is fastened with a flat side wall 7, which has an outlet opening 8 and an inlet opening, the opening 8 being aligned with the inlet opening 4 and the inlet opening 9 being aligned with the outlet opening 5.
  • the mixer housing 6 thus only needs to be fastened with the side wall 7 to the side wall 3 of the pump housing 1 in order to obtain all the necessary connections.
  • the mixer housing 6 has a second vertical side wall 10 on the side facing away from the pump, which is parallel to the side wall 7 and exits at the axis ends in order to actuate the mixer.
  • the actuator of the mixer is also attached to this side wall 10.
  • the axis 11 actuated by the mixer motor carries within the housing 6 the mixer rotary valve 12, which can assume three positions. In the position shown in FIG. 2, it connects the boiler circuit to the heating circuit, so that the boiler flow KV is connected to the heating flow HV via one half of the mixing chamber 13 and the pump 1 and also via a valve 14.
  • the heating return HR is connected to the boiler return KR via the other half of the mixing chamber 13, so that the heating circuit is supplied with heating water in the vertical rotary position of the slide 12 shown in FIG.
  • the valve actuator 12a of the valve 14 is integrally formed on the side of the rotary valve 12 opposite the axis 11 and represents a three-way valve.
  • the valve actuator 12a is therefore always rotated with the rotary valve 12 and can therefore, like the rotary valve 12, three by approximately Take 60 degrees in different rotary positions.
  • the chamber 14a of the valve 14, which contains the actuator 12a, is located next to the mixing chamber 13 within the mixer housing 6 closer to the pump housing 1 than the chamber 13 and is connected via a housing line 15 to the heating flow HV and via a housing line 16 to the flow of the hot water tank, whereby the actuator 12a is tubular and the interior of the actuator 12a and thus the chamber 14a is located directly next to the outlet opening of the pump 1 and the inlet opening 9 of the mixer housing 6, so that the interior of the pump is supplied with heating water from the boiler flow.
  • the thickness or width of the disk of the mixer housing 6 is chosen so large that the lines leading to the mixing chamber 13 and to the chamber 14a can lie side by side.
  • the heating circuit is connected to the boiler circuit. Furthermore, in this position the actuator 12a is in a rotational position in which it connects the chamber 14a to the line 15 and thus to the heating flow. If the rotary valve 12 is rotated from position I by about 60 degrees to position II (FIG. 2) by the servomotor, the mixer is closed and the heating circuit and boiler circuit are separated from one another and the chamber 14a is still connected to line 15. Between positions I and II, the rotary valve can take on numerous intermediate positions to connect the heating circuit and boiler circuit more or less as is usual with a heating mixer.
  • rotary valve 12 If the rotary valve 12 is moved from position III by a further 60 degrees to position IV, a position similar to position I is reached, which is shown in FIG.
  • the rotary valve 12 is in a position different from position I by 180 degrees, so that the actuator 12a connects the chamber 14a with the Line 16 connects and the boiler flow is connected to the hot water circuit via the pump.
  • the heating water thus flows to the hot water tank, passes through the heat exchanger and flows back to the boiler return via a line, not shown.
  • the mixing chamber 13 is bridged by a lateral bypass 17, which is closed by a rotary slide valve 18 when the mixer is to work as a four-way mixer. If, on the other hand, the rotary valve is actuated so that the bypass 17 is opened and the connection between the boiler return and the mixing chamber 13 is closed, the four-way mixer becomes a three-way mixer.
  • the rotary valve 18 can be actuated by an actuating axis 19 protruding from the side wall 10.
  • a third rotary valve 20 is arranged above the rotary valve 12, through which the heating return and heating flow can be connected.
  • This rotary slide valve 20 is also changed over to its two positions “open” and “closed” by an axis 21 protruding from the side wall 10. This makes it possible to increase the angle of rotation required for mixing when there are large temperature differences between the boiler circuit and the heating circuit and thus to increase the control room.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Domestic Hot-Water Supply Systems And Details Of Heating Systems (AREA)
  • Multiple-Way Valves (AREA)
  • Steam Or Hot-Water Central Heating Systems (AREA)
  • Sorption Type Refrigeration Machines (AREA)
EP89106958A 1988-08-19 1989-04-19 Mischvorrichtung für eine Warmwasserheizungsanlage Expired - Lifetime EP0359901B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89106958T ATE68048T1 (de) 1988-08-19 1989-04-19 Mischvorrichtung fuer eine warmwasserheizungsanlage.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3828206 1988-08-19
DE3828206A DE3828206C1 (enExample) 1988-08-19 1988-08-19

Publications (2)

Publication Number Publication Date
EP0359901A1 EP0359901A1 (de) 1990-03-28
EP0359901B1 true EP0359901B1 (de) 1991-10-02

Family

ID=6361202

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89106958A Expired - Lifetime EP0359901B1 (de) 1988-08-19 1989-04-19 Mischvorrichtung für eine Warmwasserheizungsanlage

Country Status (5)

Country Link
EP (1) EP0359901B1 (enExample)
AT (1) ATE68048T1 (enExample)
DE (2) DE3828206C1 (enExample)
ES (1) ES2026286T3 (enExample)
GR (1) GR3003465T3 (enExample)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20103392U1 (de) * 2001-02-27 2002-01-03 Viessmann Werke GmbH & Co., 35108 Allendorf Heizkreisverteiler
PL3534075T3 (pl) * 2018-03-02 2020-07-27 Afriso-Euro-Index Gmbh Zawór mieszający trójdrogowy z nastawną wartością KVS
DE102021108732A1 (de) 2021-04-08 2022-10-13 Elodrive Gmbh Mischer mit verstellbarem KVS-Wert

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1909759U (de) * 1962-03-19 1965-02-11 Ludwig Siber Misch- und umwaelzpumpe fuer warmwasserheizungs- und warmwasserbereitung-anlagen in einem gehaeuse mit vier anschluss-stutzen.
DE1273774B (de) * 1966-08-26 1968-07-25 Junkers & Co Pumpensammelheizungsanlage mit einem gasbeheizten Umlauf-Wassererhitzer, der als Waermequelle wahlweise fuer die Sammelheizungsanlage oder fuer einen Brauchwasserbereiter dient
DE2154653A1 (de) * 1971-11-03 1973-05-10 Guenter Schuessler Warmwasserheizungsanlage
DE7716337U1 (de) * 1977-05-24 1985-05-15 Taake, Wilhelm, 4970 Bad Oeynhausen Mischer mit Beipass

Also Published As

Publication number Publication date
DE58900332D1 (de) 1991-11-07
ES2026286T3 (es) 1992-04-16
GR3003465T3 (en) 1993-02-17
DE3828206C1 (enExample) 1989-11-02
EP0359901A1 (de) 1990-03-28
ATE68048T1 (de) 1991-10-15

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