CA1286949C - Mixer valve for heating installation - Google Patents
Mixer valve for heating installationInfo
- Publication number
- CA1286949C CA1286949C CA000562242A CA562242A CA1286949C CA 1286949 C CA1286949 C CA 1286949C CA 000562242 A CA000562242 A CA 000562242A CA 562242 A CA562242 A CA 562242A CA 1286949 C CA1286949 C CA 1286949C
- Authority
- CA
- Canada
- Prior art keywords
- actuator
- mixer
- water
- shaft
- mixer valve
- 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
Links
Abstract
S U M M A R Y
The invention refers to a mixer valve, particularly for heating and hot water installations, which is integrated into the housing of a circulation pump in such a manner that the wheel-shaped actuator, which is provided with blades, and the running wheel of the circulation pump are arranged with flush axles, so that the mixer actuator can be adjusted by means of coupling links which can be inserted or removed in relation to the running wheel of the circulation pump via a controllable coupling.
According to the invention, the actuator is designed in such a manner that, independently of the position of the actuator and/or its blade, a water exchange in the order of magnitude of 10% of the water throughput will take place even in the blocked position, so that the water running from the heating circuit is mixed and thus warmed prior to returning into the boiler.
The invention refers to a mixer valve, particularly for heating and hot water installations, which is integrated into the housing of a circulation pump in such a manner that the wheel-shaped actuator, which is provided with blades, and the running wheel of the circulation pump are arranged with flush axles, so that the mixer actuator can be adjusted by means of coupling links which can be inserted or removed in relation to the running wheel of the circulation pump via a controllable coupling.
According to the invention, the actuator is designed in such a manner that, independently of the position of the actuator and/or its blade, a water exchange in the order of magnitude of 10% of the water throughput will take place even in the blocked position, so that the water running from the heating circuit is mixed and thus warmed prior to returning into the boiler.
Description
3G~3~9 , ~ n s t a 1 1 ~ t 1 o n ~
The inventlon refers to a mlxer valve of the typ~ requlred partlcularlyfor heating ~nd hot water lnstallationEI~ lntergrsted lnto the houslng of a circul~tlon pump in such a ~anner th~lt the wheel-ahaped mi~er actuator, which i8 provided Hlth blades, and tlle running wheel of the clrculatlon pump are arrflnged with flush axles, 60 thnt the mixer actuator can be ad~usted by the nunnlng wheel drlve of the c~rculation pu~p by means of 8 controllable coupling, or a coupllng that can be lnserted and retr~cted.
Not o~ly can ~uch 8 ConBtruCtion of a mlxer valve be built ln a partlcular-ly space-s~ving manner in conJunction with a clroulatlon pump, slnce the compsct des~gn ~llows direct control of the ~ar~ and cold wster to be circulated, but ln addltion, a common drive for ehe actuator cf the mlxer valYe a~d for the circulation pump al80 faclllt~te6 the control processe6, allowing ~orrect control of the outflow and return flo~ of the heatlng ~ater, ~lnce both device~ fonm one unit.
AccordiDgly, the pre~ent invention concerns a further development of ~uch a combination of mixer valve ~nd circulat~on pump, of whlch the bafilc 6tructure has previou61y been sugge6ted by the in~entor.
Thereby, the invention i~ ba~ed on the lnsight gained by the inventor, ~hat ~t 16 extremely damaging for heatlng installatlons, if th~ returning heating ~ater does not reach a given mlnlmum temperature, preferably in the 40-45~C range. ~n the ca6e of too lo~ stresse6 , stress ~111 occur in an opera~ing heatlng installation, and wlll cause corrosion.
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The inventlon refers to a mlxer valve of the typ~ requlred partlcularlyfor heating ~nd hot water lnstallationEI~ lntergrsted lnto the houslng of a circul~tlon pump in such a ~anner th~lt the wheel-ahaped mi~er actuator, which i8 provided Hlth blades, and tlle running wheel of the clrculatlon pump are arrflnged with flush axles, 60 thnt the mixer actuator can be ad~usted by the nunnlng wheel drlve of the c~rculation pu~p by means of 8 controllable coupling, or a coupllng that can be lnserted and retr~cted.
Not o~ly can ~uch 8 ConBtruCtion of a mlxer valve be built ln a partlcular-ly space-s~ving manner in conJunction with a clroulatlon pump, slnce the compsct des~gn ~llows direct control of the ~ar~ and cold wster to be circulated, but ln addltion, a common drive for ehe actuator cf the mlxer valYe a~d for the circulation pump al80 faclllt~te6 the control processe6, allowing ~orrect control of the outflow and return flo~ of the heatlng ~ater, ~lnce both device~ fonm one unit.
AccordiDgly, the pre~ent invention concerns a further development of ~uch a combination of mixer valve ~nd circulat~on pump, of whlch the bafilc 6tructure has previou61y been sugge6ted by the in~entor.
Thereby, the invention i~ ba~ed on the lnsight gained by the inventor, ~hat ~t 16 extremely damaging for heatlng installatlons, if th~ returning heating ~ater does not reach a given mlnlmum temperature, preferably in the 40-45~C range. ~n the ca6e of too lo~ stresse6 , stress ~111 occur in an opera~ing heatlng installation, and wlll cause corrosion.
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4~
The purpo~e of the lnventlon i~ to lndlcate a ~ixer valve ~hlch, ln comblnatlon wlth ~ circulatloo pu~p, 13 bulle 10 ~uch ~ manner thst ln ~ny po~ltlon o~ ~he ~ctuator, independently of external influences and partlcu-larly al~o in case of 8 power fallure, ~ ~emper~ture lower than the ~pecl-fled ~lnl~u~ teQperature of the return ~ater i8 rellably prevented, na~ely lndependently of the operational conditlon, thus for in~ance, also lf several cooled heating element~ ln a heatlng 8y8te~ are suddenly started up, whether the heatin8 18 ~tarted or wheth~r lt ha~ already b~en runnlng for some conoldersble tl~e.
In the ~l~cr ~al~e sccordinK to the lnventlon, the ~c~uator of ~he valve proper 1~ deslgned ln sueh a ~anner ~hat even in ~he blocked directlon, namely lndependently of the position of the ~ctuator or lt~ blades, there 18 a ~ater exhchange, ~trongly reduced a~ compared to the eot~l through-flow, namely in the order of ~Agnltude of 10% of the ~ater through-put, so that the ~ater returnlng from the heating circult ~o the val~e i6 mixed wlth ~ate~ ccming f~o~ the boller ~nd is thus brough~ to the deslred hlgher re~urn eemperature before returnlng lnto ~he boller.
Mechanic~lly, ~here are seversl ~ays of achievlng this mi~lng, vhlch 18 to be provlded according to the l~ventlon~ namely of ~he he~ing water comlng from the boller ~ltb the cooled return water coming from ~he heatlng clrcult. Thus, for example, ~ne could al60 envlslo~ provldlng the mlxer valve ~ith a '~ypassl' whlch render~ posslble a returD of heatlng ~ater lnto the return circult.
Thereby, ~ixer valve, distributor, and pump are bullt in a particularly compact ~a~mer, 80 that the unit CaD be lnstalled even ln basements ~lth lo~ ceilln8.
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- : ~ :-, : . . . .
. ~ . . ..
'. '. ' ~ ~ .. : , ' . , , : ~ ' . . :, . . .
6~3~3 However, it 16 partlrularly sdvantageou~ to keep the width of the mlxer actuator blades at le8s than the width of the lnterlor of the mlxer, BO
that, lndependently of the position of the mixer actuator, there can be, between blade ~nd wall, en exchange of water which then ~elf-ad~ust6 accordlng to the eemperature drop between one mlxer chamber and the other, Thereby, accordlng to a further develol~ment of the inventive concept, an idle positio~l ls preferably assigned to the mixer valve, ln which there iB, on one hand, 8 direct connectlon between the boiler outflow and the heating Iwater] output and, on the other hand, between the heatlng [water]
return and the bo~ler return, which i8 always cet ~hen, for any reason, the clrculation pump ifi inoperatlve, eOg. ln ca6e of a power failure.
Contrary to all other installatlons lncluding circulation pump6, this lnstallation guarantees that the total heatlng eirculatlon will con6tantly be provided with hot ~ater resulting from the gravity of the w~te~ and the temperature drop, whereby the adv~ntage of the mix~ng process between hot water and return water ls retained without change~
Since the idle position must also be po6sible to set in case of a po~er failure, it must be manually ad~ustable; for this reason, an addltional further development provides a particularly simple coupllng between manual drive and drlve shaft of the mlxer actuator by means of an activating shaft, ~hich coupling consists of a a shaft guided in a coupling part and rotata~le from the out6ide, de~eloped as a half-shaft in the coupling area, which establishes a rlgid connection between the two parts to be coupled, namely by rotation in a recess in the aceivating shaft, or a dlsconnec-tlon, whereby the disconnected part can slide freely over the flat portion of the half-shaftr A~ditional characteristics will be explai~ed in the followlng ~ith reference to the enclosed drawlng.
The follo~ng ls shown in the drawings:
.. ..
-~ . .: -. . : : .
' ~
- : ' ' 4~
Fl~. I schematically, a heatlng circult, Fig. 2 a section of ~ top vlew of ~n actuator for a mlxer valve accordlng to the inventlon, and Flg. 3 the actuator 9 in A sectlon along the llne III - III ln Flg, 2.
In Fig. 1, 1 schematlcally ldentlfie6 a~ boiler, from which heated ~ater i~
led via a line 2 to a mlxer valve 9, and to whlch the retur~ water is led back via a boller return line 3. The heatlng output takes place via a heater line 4, by means of ~hich the indlvidual radlator~ are provlded wlth hot ~ater. The bot water ifi transported v~a a heatlng return llne 6 to a unlt 7 con~lsting of pump 8 and mlxer valYe 9. Contrary eO tradl-tional installations, the circulation pump 8 i8 placed ln the return flo~, whlch is of partlcular importance in ca6e of a power failure, as ~111 be explained in detail.
~ith respct to design, the circulation pump 8 and the actuator of the mixer valve 9 are built together with flush axles, RO that the drive of the clrculation pump 8 can be directly ù6ed to drive the actuator of the mixer valYe 9, namely thereby that the two parts can be controllably coupled to resp. released from each other mechanically, hydraulically, magnetlcally, or ln other ways.
The actuator of the mixer valve 9 is ehown in Fig. 1 in that positlon to which it is set during normal heating operation, in ~hicn the heating ~ater is directly led from the boiler output 2 into the heating clrcuit outflow 4, and the returning water flows from tbe heating circuit return 6 into the boller return 3, n~mely at a speed which ': ' ' ~' '' : ' .
': : :' ' ' - . . . :
~2~36'3fl~1 s -iB ~lways related to the functlon of the pump 8.
This posltion of the actuator i6 lllufitrated ln Pig. 2 in a slightly more ob~ective representntlon and on a somewhat larger scale. Thereby, the four line connections are ldentlfled wlth the same references as ln Flg.
1. The actuator proper divldes the interlor ~pace of the valve wlth ~he blades ll into two halves, whereby the blades can be ad~usted to the setting in a ~anner known E~se, namely via a drive shaft 12. Depending on the drlve of the circulation pump 8, the shaft 12 i6 ad~usted in a manner known per se by means of a hydromechanlcal or electromagnetlc or mechanlcal coupllng depending on the control values in the heatlng clrcuit or from the heated rooms, whereby the heatlng return flow ls then dlrectly connected with heating outflow, etc.
Wlthout applicatlon of the ~nventive concept, the heating ~ater coming from the heating return 6 and possibly Yery much cooled, ~ould go dlrectly lnto the boiler return flow 3, if the actuator posltion were as shown in Fig. 2. In such a case, and lf the boiler runs &t high levels~ e.g. 80C
or higher, stresses will occur in the boiler proper, namely not only ~n the immediaee intake area but also in the walls of the boiler or in the heatiDg pipe~, where the signiflcantly colder ~ater ls first flowing~
According to the invention, as Rhown in principle and not to scale ln Fig~ 3, a residual connection has now been provlded between the space for outflow of heating water and for the return flow of water, namely due to the fact that the width of the blades ll is less chan the clear space in the housing 10 of the mlxer valve. This creates a slot e9 through which the hot waeer from the outflow circuit can enter the return flow ln order to correspondingly preheat this return flow water and bring i~ to a temperature in the range between 40C and 45C.
, ~ . ' ~' '~, :. ';
6~'3~9 Slnce the unlt of mixer valve and clrcul~tlon pUMp 1~ located in the lmmediate vicinlty of the boller, there i6 practlcally no energy 1OB~
through ehis return. On the contrary, the llfetlme of connectors and of the boller proper will be slgnlflcantly increased.
That position of the actuator with bladles ll which ls shown in Flg. 1 and 2 should be the idle position, since thls position per~its perfect circula-tion of heated water through the heatlng circuit.
If the circulatlon pump 8 malfunction~; at a time when the actuator 1B
turned 90, e.g. because the heatlng were to be choked from outslde 60 that the heatlng clrcuit proper and the circulation rom the boiler 1 were closed, the heatlng clrcult would no longer be proYlded with hot water.
In order to prevent this, an idle position of the actuator, preferably ~anually controllable, has been provided and corresponds to the position illustrated in Fig~ 20 In this positlon, the heating will remaln ln full function even without pump, due to the gravity force3 although posslbly with lesser circulation speed of the hot water. The water c~ming from the boiler l ri~es due to the higher tempera~ure in the heatlng circult, and, after yielding its heat, it flows back to the boiler vla lines 6 and 3.
In order to facilitate 6uch a setting, a coupling that can be manually released ha8 been assigned to the actuator, by means of which coupling the actuator can be brought manually into its idle position.
Such a coupling can be built in the most varying manners.
' - . . . ' , . . . , - . . .
.
.
~ ~r~3Ç~ 3~
In the simple6c way, thl6 can be done thereby that the shaft 12 i8 brought somewhat out of the mixer val~e on one slde and 1~ provided there wlth a manually accesslble coupllng part which can be activated by means of a rod, or a lever, extendlng from the houslng, which lrod or lever] allows turning of the blades. One possible execut10n consist~ therein that the shaft 12 is extended into the range of a half-shaft which can be turned from the outside and is prov1ded wlth a reces6 resembling a half-shaft, BO
that lf the ~haft is turned, elther the free end of the shaft would turn over the flattened portion of the half-shaft, or the hslf-~haft portion proper would be turned ln the rece~s, whereby a turning of the rod could directly turn the shaft of ~he actuator blades.
Thi~ compact execution can be used without design change6 for a wide performance range from e.B. 12 KW to 110 KW.
The lnven~ion was explalned on the basis of concrete design suggestions.
For the expert active within the field, a number of modifications will appear pDssible, which can be included within the framework of the invention. It i~ ~mportant that in each position of the actuator of the mixer valve, a certain return flow of hot water into the return circuit i6 guaranteed. The expert is free to select the necessary piping deslgn between pump and mixer valv inside the houæing or with bypass lines a~ the housing.
With the arrangement according to the invent~on it ls pos6ible, for thefirst tlme, to place the circulation pump proper in the heating return flow, ~hich, as already ~xplained, makes circulation ~f hot water possible even if the pump itself malfunctions, since ln such a case, the rise of the hot ~ater is in no manner obstructed~ and the return ~ater can flow throu~h the pump by gravity.
, , " ~' ., ' , :, - ' ' ' ' ': : .. . .
, ' .
In the ~l~cr ~al~e sccordinK to the lnventlon, the ~c~uator of ~he valve proper 1~ deslgned ln sueh a ~anner ~hat even in ~he blocked directlon, namely lndependently of the position of the ~ctuator or lt~ blades, there 18 a ~ater exhchange, ~trongly reduced a~ compared to the eot~l through-flow, namely in the order of ~Agnltude of 10% of the ~ater through-put, so that the ~ater returnlng from the heating circult ~o the val~e i6 mixed wlth ~ate~ ccming f~o~ the boller ~nd is thus brough~ to the deslred hlgher re~urn eemperature before returnlng lnto ~he boller.
Mechanic~lly, ~here are seversl ~ays of achievlng this mi~lng, vhlch 18 to be provlded according to the l~ventlon~ namely of ~he he~ing water comlng from the boller ~ltb the cooled return water coming from ~he heatlng clrcult. Thus, for example, ~ne could al60 envlslo~ provldlng the mlxer valve ~ith a '~ypassl' whlch render~ posslble a returD of heatlng ~ater lnto the return circult.
Thereby, ~ixer valve, distributor, and pump are bullt in a particularly compact ~a~mer, 80 that the unit CaD be lnstalled even ln basements ~lth lo~ ceilln8.
j .
- : ~ :-, : . . . .
. ~ . . ..
'. '. ' ~ ~ .. : , ' . , , : ~ ' . . :, . . .
6~3~3 However, it 16 partlrularly sdvantageou~ to keep the width of the mlxer actuator blades at le8s than the width of the lnterlor of the mlxer, BO
that, lndependently of the position of the mixer actuator, there can be, between blade ~nd wall, en exchange of water which then ~elf-ad~ust6 accordlng to the eemperature drop between one mlxer chamber and the other, Thereby, accordlng to a further develol~ment of the inventive concept, an idle positio~l ls preferably assigned to the mixer valve, ln which there iB, on one hand, 8 direct connectlon between the boiler outflow and the heating Iwater] output and, on the other hand, between the heatlng [water]
return and the bo~ler return, which i8 always cet ~hen, for any reason, the clrculation pump ifi inoperatlve, eOg. ln ca6e of a power failure.
Contrary to all other installatlons lncluding circulation pump6, this lnstallation guarantees that the total heatlng eirculatlon will con6tantly be provided with hot ~ater resulting from the gravity of the w~te~ and the temperature drop, whereby the adv~ntage of the mix~ng process between hot water and return water ls retained without change~
Since the idle position must also be po6sible to set in case of a po~er failure, it must be manually ad~ustable; for this reason, an addltional further development provides a particularly simple coupllng between manual drive and drlve shaft of the mlxer actuator by means of an activating shaft, ~hich coupling consists of a a shaft guided in a coupling part and rotata~le from the out6ide, de~eloped as a half-shaft in the coupling area, which establishes a rlgid connection between the two parts to be coupled, namely by rotation in a recess in the aceivating shaft, or a dlsconnec-tlon, whereby the disconnected part can slide freely over the flat portion of the half-shaftr A~ditional characteristics will be explai~ed in the followlng ~ith reference to the enclosed drawlng.
The follo~ng ls shown in the drawings:
.. ..
-~ . .: -. . : : .
' ~
- : ' ' 4~
Fl~. I schematically, a heatlng circult, Fig. 2 a section of ~ top vlew of ~n actuator for a mlxer valve accordlng to the inventlon, and Flg. 3 the actuator 9 in A sectlon along the llne III - III ln Flg, 2.
In Fig. 1, 1 schematlcally ldentlfie6 a~ boiler, from which heated ~ater i~
led via a line 2 to a mlxer valve 9, and to whlch the retur~ water is led back via a boller return line 3. The heatlng output takes place via a heater line 4, by means of ~hich the indlvidual radlator~ are provlded wlth hot ~ater. The bot water ifi transported v~a a heatlng return llne 6 to a unlt 7 con~lsting of pump 8 and mlxer valYe 9. Contrary eO tradl-tional installations, the circulation pump 8 i8 placed ln the return flo~, whlch is of partlcular importance in ca6e of a power failure, as ~111 be explained in detail.
~ith respct to design, the circulation pump 8 and the actuator of the mixer valve 9 are built together with flush axles, RO that the drive of the clrculation pump 8 can be directly ù6ed to drive the actuator of the mixer valYe 9, namely thereby that the two parts can be controllably coupled to resp. released from each other mechanically, hydraulically, magnetlcally, or ln other ways.
The actuator of the mixer valve 9 is ehown in Fig. 1 in that positlon to which it is set during normal heating operation, in ~hicn the heating ~ater is directly led from the boiler output 2 into the heating clrcuit outflow 4, and the returning water flows from tbe heating circuit return 6 into the boller return 3, n~mely at a speed which ': ' ' ~' '' : ' .
': : :' ' ' - . . . :
~2~36'3fl~1 s -iB ~lways related to the functlon of the pump 8.
This posltion of the actuator i6 lllufitrated ln Pig. 2 in a slightly more ob~ective representntlon and on a somewhat larger scale. Thereby, the four line connections are ldentlfled wlth the same references as ln Flg.
1. The actuator proper divldes the interlor ~pace of the valve wlth ~he blades ll into two halves, whereby the blades can be ad~usted to the setting in a ~anner known E~se, namely via a drive shaft 12. Depending on the drlve of the circulation pump 8, the shaft 12 i6 ad~usted in a manner known per se by means of a hydromechanlcal or electromagnetlc or mechanlcal coupllng depending on the control values in the heatlng clrcuit or from the heated rooms, whereby the heatlng return flow ls then dlrectly connected with heating outflow, etc.
Wlthout applicatlon of the ~nventive concept, the heating ~ater coming from the heating return 6 and possibly Yery much cooled, ~ould go dlrectly lnto the boiler return flow 3, if the actuator posltion were as shown in Fig. 2. In such a case, and lf the boiler runs &t high levels~ e.g. 80C
or higher, stresses will occur in the boiler proper, namely not only ~n the immediaee intake area but also in the walls of the boiler or in the heatiDg pipe~, where the signiflcantly colder ~ater ls first flowing~
According to the invention, as Rhown in principle and not to scale ln Fig~ 3, a residual connection has now been provlded between the space for outflow of heating water and for the return flow of water, namely due to the fact that the width of the blades ll is less chan the clear space in the housing 10 of the mlxer valve. This creates a slot e9 through which the hot waeer from the outflow circuit can enter the return flow ln order to correspondingly preheat this return flow water and bring i~ to a temperature in the range between 40C and 45C.
, ~ . ' ~' '~, :. ';
6~'3~9 Slnce the unlt of mixer valve and clrcul~tlon pUMp 1~ located in the lmmediate vicinlty of the boller, there i6 practlcally no energy 1OB~
through ehis return. On the contrary, the llfetlme of connectors and of the boller proper will be slgnlflcantly increased.
That position of the actuator with bladles ll which ls shown in Flg. 1 and 2 should be the idle position, since thls position per~its perfect circula-tion of heated water through the heatlng circuit.
If the circulatlon pump 8 malfunction~; at a time when the actuator 1B
turned 90, e.g. because the heatlng were to be choked from outslde 60 that the heatlng clrcuit proper and the circulation rom the boiler 1 were closed, the heatlng clrcult would no longer be proYlded with hot water.
In order to prevent this, an idle position of the actuator, preferably ~anually controllable, has been provided and corresponds to the position illustrated in Fig~ 20 In this positlon, the heating will remaln ln full function even without pump, due to the gravity force3 although posslbly with lesser circulation speed of the hot water. The water c~ming from the boiler l ri~es due to the higher tempera~ure in the heatlng circult, and, after yielding its heat, it flows back to the boiler vla lines 6 and 3.
In order to facilitate 6uch a setting, a coupling that can be manually released ha8 been assigned to the actuator, by means of which coupling the actuator can be brought manually into its idle position.
Such a coupling can be built in the most varying manners.
' - . . . ' , . . . , - . . .
.
.
~ ~r~3Ç~ 3~
In the simple6c way, thl6 can be done thereby that the shaft 12 i8 brought somewhat out of the mixer val~e on one slde and 1~ provided there wlth a manually accesslble coupllng part which can be activated by means of a rod, or a lever, extendlng from the houslng, which lrod or lever] allows turning of the blades. One possible execut10n consist~ therein that the shaft 12 is extended into the range of a half-shaft which can be turned from the outside and is prov1ded wlth a reces6 resembling a half-shaft, BO
that lf the ~haft is turned, elther the free end of the shaft would turn over the flattened portion of the half-shaft, or the hslf-~haft portion proper would be turned ln the rece~s, whereby a turning of the rod could directly turn the shaft of ~he actuator blades.
Thi~ compact execution can be used without design change6 for a wide performance range from e.B. 12 KW to 110 KW.
The lnven~ion was explalned on the basis of concrete design suggestions.
For the expert active within the field, a number of modifications will appear pDssible, which can be included within the framework of the invention. It i~ ~mportant that in each position of the actuator of the mixer valve, a certain return flow of hot water into the return circuit i6 guaranteed. The expert is free to select the necessary piping deslgn between pump and mixer valv inside the houæing or with bypass lines a~ the housing.
With the arrangement according to the invent~on it ls pos6ible, for thefirst tlme, to place the circulation pump proper in the heating return flow, ~hich, as already ~xplained, makes circulation ~f hot water possible even if the pump itself malfunctions, since ln such a case, the rise of the hot ~ater is in no manner obstructed~ and the return ~ater can flow throu~h the pump by gravity.
, , " ~' ., ' , :, - ' ' ' ' ': : .. . .
, ' .
Claims (8)
1. Mixer valve, particularly for heating and hot water installations, integrated into the housing of a circulating pump in such a manner that the wheel-shaped mixer actuator, which is provided with blades, and the running wheel are arranged with flush axes, so that the mixer actuator can be adjusted by means of coupling links which can be inserted or removed in relation to the running wheel of the circulating pump via a controllable coupling, characterized in that the actuator is designed in such a manner that, independently of the position of the actuator and/or its blades, a water exchange, strongly reduced and in the order of magnitude of 10% of the water throughput will take place even in the blocked position, so that water returning from the heating circuit is mixed with water coming from the boiler and is thus warmed prior to its return into the boiler.
2. Mixer valve according to Claim l, characterized in that the width of the blades is less than the width of the interior space of the mixer.
3. Mixer valve according to Claim 1 or 2, characterized in that an idle position is assigned to the actuator, which position, if required, can be manually adjusted and which connects, on one hand, the boiler outflow with the heating flow and, on the other hand, the heating return with the return to the boiler, and which, if so desired, can be automatically set in case of failure of the circulation pump e.g. due to a power failure.
4. Mixer valve according to Claim 3, characterized in that a mechanical coupling, adjustable by means of a rotating movement, is provided as coupling between the drive and the wheel-shaped mixer actuator.
5. Mixer valve according to Claim 3, characterized in that the mechanical coupling consists of a half-shaft running radially in the driving or driven portion, co-functioning with a recess in the other part, namely in such a manner that the half-shaft is guided in the recess, thereby turning the other part as well, and by this 180° rotation permitting the recess to be turned over the flat side of the half-shaft.
6. Mixer valve according to Claim 4, characterized in that the mechanical coupling consists of a half-shaft running radially in the driving or driven portion, co-functioning with a recess in the other part, namely in such a manner that the half-shaft is guided in the recess, thereby turning the other part as well, and by this 180° rotation permitting the recess to be turned over the flat side of the half-shaft.
7. Mixer valve according to one of Claims 1, 2, 4, 5 or 6, characterized in that the access channel for feeding the return flow from the pump housing to the mixer chamber describes an angle of 45°.
8. Mixer valve according to one of Claims 1, 2, 4, 5 or 6, characterized in that a guideway chamber is provided as bypass for the water in gravity flow operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000562242A CA1286949C (en) | 1988-03-23 | 1988-03-23 | Mixer valve for heating installation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000562242A CA1286949C (en) | 1988-03-23 | 1988-03-23 | Mixer valve for heating installation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1286949C true CA1286949C (en) | 1991-07-30 |
Family
ID=4137711
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000562242A Expired - Lifetime CA1286949C (en) | 1988-03-23 | 1988-03-23 | Mixer valve for heating installation |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1286949C (en) |
-
1988
- 1988-03-23 CA CA000562242A patent/CA1286949C/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKLA | Lapsed |