DE7000528U - CIRCULATION PUMP FOR HOT WATER HEATING SYSTEMS. - Google Patents

Description

nes Pap ^ fc ^ afterwards! *, 8.1.1970

Patent attorney ²⁰ 62 P / U 6 Lödenschoid, Cenakinger Weg 7 Telephone 20655

Utility model registration Ing · Hans-Werner Pollmann, 5892 / i! Äeinerzhagen

"Circulation pump for hot water heating systems." The invention relates to a circulation pump for hot water heating systems. In today's heating systems, which are operated depending on the inside or outside temperature, the hot water pump runs practically all the time during the heating season.Because in most cases it supplies several apartments with hot water and, depending on the outside temperature on the one hand and the heat demand of the apartment user, on the other hand, it can be expected that If a number of radiators are switched off when there is less heat demand, e.g. through thermostatically controlled radiator valves, the pressure of the heated hot water generated by the pump increases ( with the number of switched off radiators, which is disadvantageous

is felt; because it increases as a result the Water velocity, which in turn leads to flow noises when the radiator valves are switched on This is particularly noticeable in the transition times

The invention is based on the object of designing a circulation pump for hot water heating systems in such a way that that they by turning off radiators

Throttling or closing of their valves (by hand or thermostats) the hot water flow delivered by the pump into the supply network with the same Received print »

The invention solves this problem in that in the interior of the pump housing by an inner »before the longitudinal wall lying between the impeller

ι the suction nozzle and the pressure nozzle a connection

Manure channel is formed, ir which a preferably removable overflow valve is provided that counter to a spring that can be adjusted by a spindle when the generated by the pump is increased Pressure in the pipeline network opens more or less towards the suction nozzle above a setpoint · This ensures that the pressure within the Supply network back to the pump regardless

_r on the number of open or closed

Radiator stays the same. This gives the pump itself a linear character. The plus speed of the heating water in the supply network for the The radiator therefore remains constant and it as a result, there are no disturbing noises the flowed through radiator valves

The structural implementation of the inventive concept is possible in various ways.

»· Τ m mm ·» ·

Han can at the end of the Ikruokstutsen Provide a connection channel for the overflow valve, which in the event of a repair after being taken there «can be grounded. This valve can be surrounded with a sieve cap but at a different point inside the overflow valve of the connection channel, one can only arrange a sieve cap for the running water at this point.

One can also land a dividing wall provided with a vent opening in the longitudinal center of the connection channel between it Arrange strength that is parallel to one of the isfradwell, facing open bomrvn & a outside insertable cberetrtareatll with patr < shaped housing and with a central screw spindle that can be operated from the outside accommodates »Bae patrom« m-

shaped housing is through a the Yeutilttffammf

containing transverse wall divided into two structures,

those at the rear through an opening in the country with «em

over-the-side part of the connection akanale umd

the other through a wall opening with the low— ™

part of the same on the print side is in terbimdung. \

ii The overpressure return can therefore easily τοη from the outside

set and otherwise lelect if necessary sum purposes of cleaning or the like. remove «

70Ö0528

(t

The partition wall can also be a valve seat for a Have a spring-influenced valve body of the overflow valve and ixe spring in a sleeve Giner valve spindle, which is guided in a threaded opening in the housing wall

In a preferred embodiment, the over Flow valve in a housing provided with a splash than on the housing wall having an opening formed the Pompe attachable unit. In this case, the upper edge of the Partition wall up to the seating area for the overflow valve, so that an interposed seal also seals this area

Finally, the pump housing can be inside the connecting channel with the help of the partition in the middle of the opening surrounded by a flange for the overflow valve to be attached Form annular valve seat and the valve body of the overflow valve in per se known Way carried by a pressure-tightly clamped membrane on the circumference between the flanges will·

The pump housing also has a pressure measuring device, ζ · Β _{β, on the suction port and the pressure port}

IfC I *

Manometer to the pressure status before and after the To be able to better assess the overflow valve.

In the drawing, the subject matter of the invention is based on several schematically presented examples explained:

Ss Seigern

j? y. 1 a circulation pump, partly in section, Pig 2 a slightly enlarged view of an overflow valve that can be inserted into the housing from the outside,

Pig. 3 shows a modified embodiment of the overflow valve accommodated in the pump housing,

Pig. 4 and 5 two further exemplary embodiments of the overflow valve as a removable structural unit.

The pump (Pig. 1) has a suction port 1 ^a and a pressure port 1 ty an impeller 3 on a shaft driven by the motor 5 · In the interior of the

a b pump between the two nozzles 1.1 is through an inner longitudinal wall 1 in front of the impeller 3

'C Θ

and the housing outer wall 1 is a connection duct 1 formed, in which an overflow valve 2 is provided, which is counter to a screw

b c

spindle 2 adjustable peder 2 when increasing the PressuresB generated by the pump in the pipeline network over a setpoint more or less after the suction

Il It

nozzle 1 ^a opens. At the intake port ^1a and the discharge nozzle 1 is a pressure gauge attached 6, takes place enabling the proper adjustment of the force of the compression spring 2 ° »

In Fig. 1, two possible embodiments are shown side by side. For example, a seat 1 for the overflow valve 2 is provided at the end of the connection ^{channel 1 e} facing the pressure port, which gate is partially surrounded by a sieve cap 2 ⁿ .

However, shapes of the overflow valve which enable adjustment from the outside are preferred.For this purpose, in the longitudinal center of the connecting ^channel 1 Θ between the walls 1 ^C , 1 there is a partition wall 1 ^{S of} considerable thickness provided with a passage opening 1, which is in one of the Laufradwslle 4 parallel, outwardly open bore 1 ¹ an externally insertable overflow valve 2 with cartridge-shaped housing 2 and with a central, externally operable screw spindle 2 ¹³ for setting the spring 2 ^C. The patronenf or-shaped housing 2 is divided by a valve opening 2® containing bulkhead 2 into two trees, one of which is through a wall opening 2 ^e, and the other by wall aine

opening 2 ^h ait du YrafciniuagftJca & sl 1 * in (KLg. 2) ·

With a different approach & nm (f £ «> 9)

the partition wall 1 * a Yentilftffnua * 1 * as fet « the VentUMxper 2 * influenced by a spring 2 ° of the overflow valve 2 and the spring 2 ° is in the bucket

Sleeve 2 ^{1 of} the screw spindle 2 * arranged in the

a threaded opening 1 of the Gehäosewaad · * taken

is.

In the training according to fig. 4 is the overflow valve 2 in a housing provided with a flange 2 as on the Oehäasewand having an opening 1 1 ° of the pump pressure-tight, attachable unit «, a design that is easy to remove of the overflow valve 2 - for the purpose of cleaning - I

f allowed.

In a further preferred embodiment (fig. 5) in the pump housing 1, 1 ^C within the connecting passage 1 ^e by using the Srennwaae 1 ^e in the middle of the hills with a flange 1 "port 1 ¹ for the-set-up relief valve 2, 2 ¹ a annular valve seat 1 ⁿ formed

4C

^{Valve body 2 a of} the overflow valve 2 closing this valve seat 1 is supported here by a membrane 2 ^m clamped pressure-tight on the circumference between the flanges 1 ^{m, 2}

Claims (1)

- 9 - Sohutzansprt ^ he % 1) Circulation pump for hot water supply systems, characterized in that in the interior of the pump housing (1, 1 ^C ) by an inner longitudinal wall (1) in front of the impeller (3) in the area between the suction nozzle (1 ^a ) and the pressure nozzle (1) a connecting ^channel (1 Θ) is formed in which an overflow valve (2) is provided, which increases against a peder (2 ^{C ) adjustable by a spindle (2 b} ) when the pressure generated by the pump in the pipeline network increases above a setpoint value or less towards the suction port (i ^a ) opens 2.) Circulation pump according to claim 1, characterized in that the end of the connecting ^{channel (1 e} ) facing the pressure port (1) has a seat (1 ^{f) for daa.} Overflow valve (2) is provided, which is preferably ^ surrounded by a sieve cap (2 ^U ) (Pig · 1). 3.) Circulation pump according to claim 1, characterized in that approximately in the longitudinal center of the connecting channel (1 ^Θ ) between the walls (1 ^C , 1) a with a passage opening (1) provided partition (1 ^g ) is arranged of considerable thickness, the ^{in one of the outwardly open bore (1 1} ) parallel to the impeller shaft (4-) there is an externally insertable 3 overflow valve (2) with a cartridge-shaped - 1 © m Housing (2 ^d ) mad alt mittle * «*, ve * Sehraubspindel (2 ^b ) accommodates, (lay. 1 4.) Circulation pump according to claim 1 «fit 3, indicates that the patromemfermige flshtwss (JT) ^{is divided into two fiinme by a wall (2 f} ) containing the valve opening (2 *)» one of which is divided by a wall opening (2 ^Ä ), the ami U through line wall opening {2r) with connecting (1 °) is connected. (Fig * 2) 5.) Circulation pump according to claim 1 and 3, d adurch 't that the partition (1 ^g ) has a valve' is. (RLg. 3) Opening (Λ ^ύ ) for the influenced by a spring (2 °). Fluffite valve body (2 ^Ä ) of the overflow valve (2) and the spring (2 ^C ) is arranged in a socket (2 ¹ ) of the valve spindle (2 ^b ), which is in a 0e >> thread opening (i ^k ) of the housing wall (1 ^e ) led 6 ·) UBWälzpuupe according to claim 1 and one or Reren of claims 2 to 5, thereby gefcenraelohmt. that the overflow profitable (2) ia «iaern a ± i wisaa Flange (2 ^k ) provided housing (2 ¹ ) than on the a housing (1 ^e ) having an opening (1 ¹⁾ Pump pressure-tight aufetzhare assembly formed r is. (Fig. 4) - 11 - 7 ·) Circulation pump according to claim 1 and 6, characterized in that in the pump housing (1, 1 ^C ) within the connecting ^channel (1 Θ) using the partition {Ι * ⁵ ) in the middle of the surrounded by a flange (1 ^m ) Opening (1 ¹ ) for the overflow ^{valve (2, 2 1} ) to be attached, an annular valve seat (1 ⁿ ) is formed and the valve body (2 ^a ) of the overflow valve in a known manner by one on the circumference between the flanges (1 ^m , 2 ^k ) all around pressure-tight clamped membrane (2 ^m ) is carried. (Pig, 5) 8.) Circulation pump according to claim 1 or auoh one or more of claims 2 to 7 » characterized in that the suction port (1 ^a ) and the pressure port (1) each have a Druokmeßgerät, z. B. a pressure gauge (6) ^ is attached. For the applicant: Patent attorney