NO122552B - - Google Patents

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Publication number
NO122552B
NO122552B NO3955/68A NO395568A NO122552B NO 122552 B NO122552 B NO 122552B NO 3955/68 A NO3955/68 A NO 3955/68A NO 395568 A NO395568 A NO 395568A NO 122552 B NO122552 B NO 122552B
Authority
NO
Norway
Prior art keywords
valve
water heater
controlled
line
heater circuit
Prior art date
Application number
NO3955/68A
Other languages
Norwegian (no)
Inventor
P Huber
Original Assignee
Danfoss As
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 Danfoss As filed Critical Danfoss As
Publication of NO122552B publication Critical patent/NO122552B/no

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24DDOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D19/00Details
    • F24D19/10Arrangement or mounting of control or safety devices
    • F24D19/1006Arrangement or mounting of control or safety devices for water heating systems
    • F24D19/1066Arrangement or mounting of control or safety devices for water heating systems for the combination of central heating and domestic hot water
    • F24D19/1069Arrangement or mounting of control or safety devices for water heating systems for the combination of central heating and domestic hot water regulation in function of the temperature of the domestic hot water
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24DDOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D10/00District heating systems
    • F24D10/006Direct domestic delivery stations
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24DDOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D3/00Hot-water central heating systems
    • F24D3/08Hot-water central heating systems in combination with systems for domestic hot-water supply
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/17District heating
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00Combustion technologies with mitigation potential
    • Y02E20/14Combined heat and power generation [CHP]

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Steam Or Hot-Water Central Heating Systems (AREA)

Description

Preferansekobling for en yannvarmer i et fjernoppvarmingsanlegg. Preference connection for a water heater in a district heating system.

Foreliggende oppfinnelse vedrorer en preferansekobling The present invention relates to a preferential connection

for en vannvarmer i et fjernoppvarmingsanlegg, ved hvilken en ven- for a water heater in a district heating system, in which a ven-

til i varmelegemekretsen lukker i avhengighet av vannvarmerens varmekrav. to in the heater circuit closes depending on the water heater's heat requirement.

Det er kjent preferansekoblinger av denne type ved hvilke There are known preference links of this type by which

det er anordnet en ventil såvel i vannvarmerkretsen som også i varmelegemekretsen, hvilke ventiler blir styrt av en koblingskasse, a valve is arranged both in the water heater circuit and in the heater circuit, which valves are controlled by a junction box,

som på sin side får ordrer fra en bruksvanntermostat i vannvarmeren. which in turn receives orders from a service water thermostat in the water heater.

På denne måte er det mulig å oppvarme vannvarmeren sterkere i et kort tidsrom på bekostning av varmelegemekretsen, for etter-vannuttak hurtig igjen å bringe vannvarmervannet tilbake til den bnskede tempe-råtur. I koblingskassen kan det videre bli bearbeidet befalinger fra en romtermostat eller fra en utetemperaturfoler. In this way, it is possible to heat the water heater more strongly in a short period of time at the expense of the heater circuit, so that, after water withdrawal, the water heater water can quickly be returned to the desired temperature. In the junction box, commands from a room thermostat or from an outdoor temperature sensor can also be processed.

Ved de kjente preferansekoblinger er derfor begge kretser forbundet ved hjelp av en koblingskasse som danner en styrings-sentral. Dette gir en komplisert styremekanisme, som ikke tillater en drift av kretsene på den måte som er blitt benyttet i mange år uten preferanse for vannvarmerkretsen. In the case of the known preferential connections, both circuits are therefore connected by means of a junction box which forms a control center. This provides a complicated control mechanism, which does not allow operation of the circuits in the manner that has been used for many years without preference for the water heater circuit.

Ved de sistnevnte anordninger er varmelegemekretsen og den parallelt til denne liggende vannvarmerkrets reguleringsteknisk ikke forbundet med hverandre. I vannvarmerkretsen ligger det en termostatisk ventil, som blir styrt i avhengighet av vannvarmerens varmekrav, f.eks. bruksvanntemperaturen. I varmelegemekretsen ligger en mengdebegrensningsventil som blir styrt i avhengighet av trykksenkningen ved hjelp av en i serie med ventilen liggende måleblende. Da fjernoppvarmingsverket bare leverer en bestemt varmt-vannsmengde, kan vannvarmeren bare bli langsomt oppvarmet, hvis det i begge kretser blir krevet en stor varmemengde samtidig. In the case of the latter devices, the heater circuit and the water heater circuit lying parallel to it are not connected to each other from a control point of view. In the water heater circuit there is a thermostatic valve, which is controlled depending on the water heater's heat requirements, e.g. the service water temperature. In the heater circuit is a quantity limiting valve which is controlled in dependence on the pressure drop by means of a measuring orifice in series with the valve. As the district heating plant only delivers a certain amount of hot water, the water heater can only be heated slowly if a large amount of heat is required in both circuits at the same time.

Den oppgave som ligger til grunn for oppfinnelsen, er å tilveiebringe en preferansekobling for vannvarmerkretsen, hvilken kobling har en så enkel oppbygning som mulig og som i storst mulig grad gjor bruk av de.kjente tiltak ved koblinger uten preferanse, slik at eventuelt også preferansefunksjonen kan bli innfort i system-et etterpå. The task underlying the invention is to provide a preference connection for the water heater circuit, which connection has as simple a structure as possible and which, to the greatest extent possible, makes use of the known measures for connections without preference, so that possibly also the preference function can be entered into the system afterwards.

Denne oppgave blir lost ifblge oppfinnelsen ved at vannvarmerkretsen har en ventil som er termostatisk styrt i avhengighet av vannvarmerens varmekrav og den er kjennetegnet ved at det i tilbakelopsdelen av varmelegemekretsen er anordnet en differanse-trykkstyrt ventil med etterkoblet måleblende og at det fra tillops-siden er fort en forbindelsesledning til et punkt mellom den differansetrykkstyrte ventil og måleblenden, hvilken ledning er utstyrt med en ventil som styres av. vannvarmerens varmekrav og et etter-følgende strupeorgan, mellom hvilke den til det hbyere trykk tilordnede tillopsledning til betjeningsorganet for den differansetrykkstyrte ventil avgrener seg. This task is solved according to the invention by the fact that the water heater circuit has a valve that is thermostatically controlled depending on the water heater's heat requirements and it is characterized by the fact that in the return part of the heater circuit there is a differential pressure-controlled valve with a downstream measuring orifice and that from the supply side there is fast a connecting line to a point between the differential pressure-controlled valve and the measuring orifice, which line is equipped with a valve that is controlled by. the water heater's heat requirement and a subsequent throttle member, between which the supply line assigned to the higher pressure to the operating member for the differential pressure-controlled valve branches off.

Ved denne kobling blir de inntil nu vanlige, gode og enkle styringsorgan benyttet i vannvarmerkretsen og i varmelegemekretsen. Som det blir nærmere beskrevet senere, forer en forbindelsesledning med de angitte kjennetegn til den onskede preferansekobling. Den allerede tilstedeværende mengdereguleringsventil i varmelegemekretsen blir samtidig benyttet som sperreventil for preferansekoblingen. With this connection, the until now common, good and simple control devices are used in the water heater circuit and in the heater circuit. As will be described in more detail later, a connecting wire with the indicated characteristics leads to the desired preferential connection. The quantity control valve already present in the heater circuit is also used as a shut-off valve for the preference connection.

I videre utforming av oppfinnelsen kan ventilen i forbindelsesledningen likeledes som ventilen i vannvarmerkretsen være en av vannvarmerbruksvanntemperaturen styrt termostatisk ventil. Bruksvanntemperaturen angir på en spesielt enkel måte varmekravet for vannvarmeren. In a further design of the invention, the valve in the connecting line, as well as the valve in the water heater circuit, can be a thermostatic valve controlled by the water heater use water temperature. The service water temperature indicates in a particularly simple way the heating requirement for the water heater.

Dessuten kan ventilen i forbindelsesledningen åpne kontinuerlig i samsvar med vannvarmerens varmekrav. På denne måten kan ved en tilsvarende struping ved hjelp av denne ventil differanse-trykket bli kontinuerlig forandret. Dette forer til en kontinuerlig styring av ventilen i varmelegemekretsen. In addition, the valve in the connection line can open continuously in accordance with the water heater's heat requirements. In this way, with a corresponding throttling with the help of this valve, the differential pressure can be continuously changed. This leads to continuous control of the valve in the heater circuit.

Særlig fordelaktig er det, hvis ventilen i forbindelsesledningen åpner ved et hoyere varmekrav for vannvarmeren • enn ventilen i vannvarmerkretsen. Dette forer til en to-trinnsdrift, hvorved et lite varmekrav fra vannvarmeren riktignok allerede forer til vannvarmerens oppvarming, men ikke til en struping av varmelegemekretsen, men ved et storre varmekrav blir imidlertid varmelegemekretsen koblet ut til fordel for vannvarmerkretsen. It is particularly advantageous if the valve in the connection line opens at a higher heat requirement for the water heater • than the valve in the water heater circuit. This leads to a two-stage operation, whereby a small heating requirement from the water heater does indeed already lead to the heating of the water heater, but not to a throttling of the heater circuit, but in the case of a larger heat requirement, the heater circuit is switched off in favor of the water heater circuit.

Strupeorganet i forbindelsesledningen er i det enkleste tilfelle en blende. Det kan imidlertid også bestå av en nålventil, med hvis hjelp det kan innstilles et vilkårlig lite strupetverrsnitt. The throat organ in the connecting line is in the simplest case a diaphragm. However, it can also consist of a needle valve, with the help of which an arbitrarily small throat cross-section can be set.

Oppfinnelsen blir i det folgende nærmere forklart ved hjelp av et eksempel på utfbrelsen som er fremstilt på tegningen. Tegningen viser en preferansekobling ifolge oppfinnelsen i skjema-tisk fremstilling. In the following, the invention is explained in more detail using an example of the embodiment shown in the drawing. The drawing shows a preferential connection according to the invention in a schematic representation.

Til et tillop 1 og tilbakelop 2 er det tilsluttet en varmelegemekrets 3 som har tre paralleltkoblede varmelegemer 4 og i tilbakelopet en mengde-reguleringsventil 5, som blir styrt av trykksenkningen ved en måleblende 6. Til dette formål er cfet styrende b,etjeningselement 7 utstyrt med to tilfbrselsledninger 8 og 9. A heater circuit 3 is connected to a supply flow 1 and return flow 2, which has three parallel-connected heating elements 4 and in the return flow a quantity control valve 5, which is controlled by the pressure drop at a measuring orifice 6. For this purpose, the cfet control b,operating element 7 is equipped with two supply lines 8 and 9.

Parallelt hertil ligger en vannvarmerkrets 10, hvis vannvarmer 11 har et oppvarmingsrom 12 og et forvarmingsrom 13. Bruks-vannet blir tilfort over ledningen 14 og tatt ui gjennom ledningen 15. I vannvarmerkretsen har man en termostatisk betjent ventil 16, som over en styreledning 17 blir styrt av bruksvanntemperaturen i oppvarmingsrommet 12. Parallel to this is a water heater circuit 10, whose water heater 11 has a heating room 12 and a pre-heating room 13. The service water is supplied via line 14 and taken out through line 15. In the water heater circuit there is a thermostatically operated valve 16, which via a control line 17 is controlled by the service water temperature in the heating room 12.

Tillbpet 1 er over en forbindelsesledning 18 forbundet The attachment 1 is connected via a connection line 18

med et punkt 19 mellom ventilen 5 og den tilhdrende måleblende 6. with a point 19 between the valve 5 and the associated measuring diaphragm 6.

I denne forbindelsesledning 18 er det anordnet en termostatisk betjent ventil 20, som over en styreledning 23 blir regulert i avhengighet av bruksvanntemperaturen i oppvarmingsrommet 12, samt en nålventil 21. Ved et punkt 22 mellom organene 20 og 21 er tillops-ledningen 9 med det storre trykk for arbeidselementet 7 til ventilen 5 tilsluttet. In this connection line 18, a thermostatically operated valve 20 is arranged, which is regulated via a control line 23 depending on the service water temperature in the heating room 12, as well as a needle valve 21. At a point 22 between the bodies 20 and 21, the supply line 9 with the larger pressure for the working element 7 to the valve 5 connected.

Så lenge vannvarmeren ikke angir noe varmekrav, strommer varmtvannet bare gjennom varmelegemekretsen, dvs. gjennom varme-legemene 4. Den totale mengde er begrenset ved hjelp av ventil 5. Når nålventilen 21 er noe åpnet, blir trykket foran blenden 6 uten videre over tillbpsledningen 9 overfort til arbeidselementet 7, noyaktig som trykket bak blenden ble overfort via ledningen 8. Selvfølgelig kan varmelegemekretsen ha videre reguleringsorganer, som kan være en felles i avhengighet av utetemperaturen styrt termostatisk ventil, eller det kan være en termostatisk av romtempera-turen styrt ventil ved hvert varmelegeme eller lignende. As long as the water heater does not indicate any heating requirement, the hot water only flows through the heating element circuit, i.e. through the heating elements 4. The total quantity is limited by means of valve 5. When the needle valve 21 is slightly opened, the pressure in front of the diaphragm 6 is immediately transferred over the auxiliary line 9 transferred to the working element 7, exactly as the pressure behind the shutter was transferred via the line 8. Of course, the heater circuit can have further regulating devices, which can be a common thermostatic valve controlled in dependence on the outside temperature, or there can be a valve thermostatically controlled by the room temperature at each heater or similar.

Når bruksvanntemperaturen i vannvarmeren 11 synker, åpner ventilen 16 og det strommer en del av det tilforte varmtvann gjennom vannvarmeren til tilbakeføringen 2. Samtidig eller - noe som onskes - ved enda mere senket bruksvanntemperatur åpner den termostatiske ventil 20 i forbindelsesledningen 18. Folgelig strommer en del av, varmtvannet, riktignok en uvesentlig liten del, gjennom forbindelsesledningen 18. Den herved ved blenden 21 opptredende trykksenkning forer til en trykkokning ved punkt 22, i forhold til den tidligere driftstilstand. Folgelig lukker ventilen 5. Av denne grunn blir hele varmtvannet tilfort vannvarmeren. When the service water temperature in the water heater 11 drops, the valve 16 opens and part of the supplied hot water flows through the water heater to the return 2. At the same time or - as desired - at an even lower service water temperature, the thermostatic valve 20 opens in the connection line 18. Consequently, a part flows of, the hot water, admittedly an insignificantly small part, through the connection line 18. The pressure reduction that occurs here at the diaphragm 21 leads to a pressure boiling at point 22, in relation to the previous operating condition. Consequently, valve 5 closes. For this reason, all the hot water is supplied to the water heater.

Når den termostatiske ventil 20 er utformet slik at den har et betraktelig og med temperaturen kontinuerlig seg forandrende strupetverrsnitt, kan trykket ved punktet 22 kontinuerlig stige med fallende bruksvanntemperatur, slik at ventilen 5 med fallende bruksvanntemperatur langsomt lukker. Dette gir en langsom overgang fra en driftstype, hvor bare varmelegemekretsen blir forsorget med varmtvann, til en annen driftstype, hvor bare vannvarmeren blir forsorget med varmtvann. When the thermostatic valve 20 is designed so that it has a considerable and continuously changing throat cross-section with the temperature, the pressure at the point 22 can continuously rise with falling service water temperature, so that the valve 5 with falling service water temperature slowly closes. This provides a slow transition from one mode of operation, where only the heater circuit is supplied with hot water, to another mode of operation, where only the water heater is supplied with hot water.

Claims (5)

1. Preferansekobling for en vannvarmer i et fjernoppvarmingsanlegg ved hvilken en ventil i varmelegemekretsen lukker i avhengig-1. Preference connection for a water heater in a district heating system whereby a valve in the heater circuit closes in dependent- het av vannvarmerens varmekrav, ved at vannvarmerkretsen (10) har en ventil (16) som er termostatisk styrt i avhengighet av vannvarmerens (11) varmekrav, karakterisert ved at det i tilbakelopsdelen av varmelegemekretsen (3) er anordnet en differ-ansetrykkstyrt ventil (5) med etterkoblet måleblende (6), og at det fra tillopsdelen (l) er fort en forbindelsesledning (18) til et punkt (19) mellom den differansetrykkstyrte ventil og måleblenden, hvilken ledning er utstyrt med en ventil (20) som styres av vannvarmerens varmekrav og et etterfblgende strupeorgan (21) mellom hvilke den til det hbyere trykk tilordnede tillopsledning (9) til bet 2eningsorganet (7) for den differansetrykkstyrte ventil av-grenes. heat of the water heater's heat requirement, in that the water heater circuit (10) has a valve (16) which is thermostatically controlled in dependence on the water heater's (11) heat requirement, characterized in that a differential pressure-controlled valve (5) is arranged in the return part of the heater circuit (3) ) with a downstream measuring orifice (6), and that there is a connection line (18) from the inlet part (l) to a point (19) between the differential pressure controlled valve and the measuring orifice, which line is equipped with a valve (20) which is controlled by the water heater heat demand and a subsequent throat member (21) between which the supply line (9) assigned to the higher pressure to the operating member (7) for the differential pressure-controlled valve branches off. 2. Preferansekobling ifolge krav 1, karakterisert ved at ventilen (20) i forbindelsesledningen (18) på samme måte som ventilen (16) i vannvarmerkretsen (10) er en termostatisk ventil styrt av vannvarmer-bruksvanntemperaturen. 2. Preference connection according to claim 1, characterized in that the valve (20) in the connection line (18) in the same way as the valve (16) in the water heater circuit (10) is a thermostatic valve controlled by the water heater service water temperature. 3. Preferansekobling ifolge krav 1 eller 2, karakterisert ved at ventilen (20) i forbindelsesledningen (18) åpner kontinuerlig med varmekravet til vannvarmeren (il),, 3. Preference connection according to claim 1 or 2, characterized in that the valve (20) in the connection line (18) opens continuously with the heat demand of the water heater (il), 4. Preferansekobling ifolge et av kravene 1- 3, karakterisert ved at ventilen (20) i forbindelsesledningen (18) åpner ved et storre varmekrav fra vannvarmeren (11) enn ventilen (16) i vannvarmerkretsen (10). 4. Preference connection according to one of claims 1-3, characterized in that the valve (20) in the connection line (18) opens when there is a greater heat demand from the water heater (11) than the valve (16) in the water heater circuit (10). 5. Preferansekobling ifolge et av kravene 1-4, karakterisert ved at strupeorganet i forbindelsesledningen er en blende (21).5. Preference connection according to one of claims 1-4, characterized in that the throat member in the connecting line is a diaphragm (21).
NO3955/68A 1967-10-07 1968-10-05 NO122552B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1679325 1967-10-07

Publications (1)

Publication Number Publication Date
NO122552B true NO122552B (en) 1971-07-12

Family

ID=5686917

Family Applications (1)

Application Number Title Priority Date Filing Date
NO3955/68A NO122552B (en) 1967-10-07 1968-10-05

Country Status (9)

Country Link
AT (1) AT285114B (en)
BE (1) BE721827A (en)
CH (1) CH473364A (en)
DE (1) DE1679325B1 (en)
FR (1) FR1594638A (en)
GB (1) GB1195509A (en)
NL (1) NL6814175A (en)
NO (1) NO122552B (en)
SE (1) SE334725B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2211108A5 (en) * 1972-12-20 1974-07-12 Pont A Mousson
FR2269032A1 (en) * 1974-04-23 1975-11-21 Gras Water heating and distribution system - has heat exchanger with primary in feed and recirculation circuit
DK439582A (en) * 1982-01-07 1983-07-08 Scanergi Miljoe Energisyst Condensing boiler boiler
DE3310760A1 (en) * 1983-03-24 1984-09-27 Friedrich 7180 Crailsheim Müller ARRANGEMENT FOR HEAT WATER HEATING BY MEANS OF A REMOTE HEAT MEDIUM DELIVERED BY A COUNTERFLOW HEAT EXCHANGER
AT384880B (en) * 1985-04-03 1988-01-25 Swaty Franz HOT WATER HEATING

Also Published As

Publication number Publication date
BE721827A (en) 1969-03-14
GB1195509A (en) 1970-06-17
FR1594638A (en) 1970-06-08
DE1679325B1 (en) 1971-01-28
AT285114B (en) 1970-10-12
CH473364A (en) 1969-05-31
SE334725B (en) 1971-05-03
NL6814175A (en) 1969-04-09

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