DK146668B - THERMOSTAT SET FOR A RADIATOR VALVE - Google Patents
THERMOSTAT SET FOR A RADIATOR VALVE Download PDFInfo
- Publication number
- DK146668B DK146668B DK242777AA DK242777A DK146668B DK 146668 B DK146668 B DK 146668B DK 242777A A DK242777A A DK 242777AA DK 242777 A DK242777 A DK 242777A DK 146668 B DK146668 B DK 146668B
- Authority
- DK
- Denmark
- Prior art keywords
- light sensor
- thermostat set
- heating element
- thermostat
- contact
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/30—Automatic controllers with an auxiliary heating device affecting the sensing element, e.g. for anticipating change of temperature
- G05D23/32—Automatic controllers with an auxiliary heating device affecting the sensing element, e.g. for anticipating change of temperature with provision for adjustment of the effect of the auxiliary heating device, e.g. a function of time
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/1902—Control of temperature characterised by the use of electric means characterised by the use of a variable reference value
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/275—Control of temperature characterised by the use of electric means with sensing element expanding, contracting, or fusing in response to changes of temperature
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Control Of Resistance Heating (AREA)
- Thermally Actuated Switches (AREA)
- Temperature-Responsive Valves (AREA)
Description
146668146668
Opfindelsen angår en termostatopsats for en radiatorventil med et termostatisk arbejdselement, der virker som føler- og indstillingsorgan, med et luftslidser i omkredsvæggen opvisende drejegreb og med et arbejdselementet tilgrænsende 5 elektrisk varmeelement, som kan ind- og udkobles ved hjælp af en elektrisk kontakt, som er et elektronisk af en lysføler styret kontaktelement.BACKGROUND OF THE INVENTION 1. Field of the Invention The invention relates to a thermostat set for a radiator valve having a thermostatic working element acting as a sensing and adjusting member, having a rotary handle having air slots in the perimeter wall and having a working element adjacent to an electric heating element which can be switched on and off by means of an electrical contact which is an electronically controlled contact element of a light sensor.
Ved termostatopsatser af denne art, dog uden lysføler, (DE-OS 24 21 810) opvarmes det termostatiske arbejdselement af 10 det indkoblede varmeelement til en højere temperatur end rumtemperaturen. Som følge heraf reguleres rumtemperaturen til en lavere værdi. Denne temperatursænkning er især ønsket som såkaldt natsænkning i forbindelse med varmeomkostnings-besparelser. Ind- og udkoblingen sker ved hjælp af et kontakt-15 ur, som sammen med tilslutningsledningen er anbragt mellem varmeelementet og strømforsyningskilden. Der skal derfor lægges ledningsafsnit mellem dette kontaktur og varmeelementet på den ene side og strømforsyningskilden på den anden side. Et sådant kontaktur kan også anvendes til central 20 styring af flere ventiler. Dermed bliver det nødvendige ledningssystem endnu dyrere. Når ventiler senere skal forsynes med en temperatursænkningsanordning, lader et sådant ledningssystem sig praktisk taget ikke mere flytte.In thermostat sets of this kind, however without a light sensor, (DE-OS 24 21 810), the thermostatic working element of the heating element 10 is heated to a higher temperature than the room temperature. As a result, the room temperature is adjusted to a lower value. This reduction in temperature is particularly desired as a so-called night reduction in connection with heat cost savings. The switching on and off is done by means of a contact clock, which together with the connection line is arranged between the heating element and the power supply source. Therefore, wiring sections must be laid between this contact clock and the heating element on one side and the power supply source on the other. Such a contact clock can also be used for central control of several valves. This makes the necessary wiring system even more expensive. When valves are later to be fitted with a temperature-lowering device, such a conduit system is practically no longer movable.
Man kender også allerede en rumtemperaturregulator (DE-OS 25 21 21 871), ved hvilken børværdi-temperaturen yderligere 2 146668 styres af en lysfølsom størrelse til indkobling af natsænk-ningen. Til dette formål er et termostatisk arbejdselement i form af et bimetal påvirket af en varmemodstand, der forsynes med strøm over et kontaktelement, som dannes af en tran-5 sistor og styres af et lysfølsomt halvlederelement. Dette halvlederelement kan valgfrit være monteret inden for eller uden for det temperaturregulerede rum.Also known is a room temperature controller (DE-OS 25 21 21 871), at which the setpoint temperature is further controlled by a photosensitive size for switching on the night lowering. For this purpose, a thermostatic working element in the form of a bimetal is influenced by a heat resistance provided by a contact element formed by a transistor and controlled by a photosensitive semiconductor element. This semiconductor element may optionally be mounted inside or outside the temperature controlled room.
Endvidere er det kendt (DE-OS 24 06 748) i en radiatorventil , som styres af et ekspansionsled, der kan opvarmes, at 10 anbringe et elektrisk varmeelement og en denne aktiverende kontakt.Furthermore, it is known (DE-OS 24 06 748) in a radiator valve, which is controlled by an expansion joint which can be heated, to place an electric heating element and a contacting actuator.
yderligere er det kendt (DE-AS 19 06 507) at udforme en rumtermostat som signalsender og hermed at styre en varmekilden tilsluttet signalmodtager trådløst, enten med elektromagne-15 tiske svingninger eller med ultralydsvingninger.further, it is known (DE-AS 19 06 507) to design a room thermostat as a signal transmitter and thereby control a heat source connected to the signal receiver wirelessly, either with electromagnetic oscillations or with ultrasonic oscillations.
Opfindelsen har til hensigt at skabe et hjælpeapparat for en radiatorventil af den i indledningen beskrevne art, som valgfrit kan tilføjes eller anbringes senere, og ved hvilket der uden for termostatopsatsen kun er anbragt eet kabel til 20 tilslutning til en strømkilde, men alligevel udviser en automatisk styring af natsænkningen.The invention intends to provide an auxiliary apparatus for a radiator valve of the kind described in the preamble which may optionally be added or placed later and in which, outside the thermostat set, only one cable is provided for connection to a power source, yet exhibits an automatic controlling the night lowering.
Denne opgave løses ifølge opfindelsen ved, at varmeelementet, kontaktelementet og lysføleren er forenede til en på opsatsen anbringbar komponentenhed, og at komponentenheden 25 er anbragt i et med en åbning for lysgennemgangen til lysføleren forsynet låg til anbringelse på forsiden af drejegrebet.This task is solved according to the invention in that the heating element, the contact element and the light sensor are connected to a component unit which can be placed on the set and that the component unit 25 is arranged in a lid provided with an opening for the light passage of the light sensor for placement on the front of the swivel handle.
Ved anbringelse af kontaktelementet i opsatsen bortfalder en kontaktanordning, som yderligere skulle have været monteret. Desuden bortfalder en forbindelsesledning mellem kontaktan-30 ordning og varmeelement. Det ud fra opsatsen førende kabel kan umiddelbart forbindes med en strømkilde, fx den nærmest 3 146668 liggende stikdåse. Det i opsatsen indbyggede kontaktelement aktiveres af en lysføler, især en fotomodstand. Indkoblingen af varmeelementet sker så i afhængighed af lysforholdene i det opvarmede rum. Så snart lyset slukkes om aftenen, ind-5 kobles natsænkningen automatisk. Det samme gælder ved mørklagte, altså ikke benyttede rum, fx når rullegardinerne i kontorlokaler rulles ned efter fyraften. Desuden fremtvinges temperatursænkningen vilkårligt ved dækning af lysføleren.Upon insertion of the contact element into the set, a contact device which should have been further mounted lapses. In addition, a connection line between contact device and heating element lapses. The cable leading from the set-up can immediately be connected to a power source, for example, the socket nearest to 3 146668. The contact element built into the setup is activated by a light sensor, especially a photo resistor. The heating element is then switched on depending on the lighting conditions in the heated room. As soon as the light goes out in the evening, the night lowering is switched on automatically. The same applies to darkened, that is, unused spaces, for example, when the blinds in office space are rolled down after four o'clock. In addition, the lowering of the temperature is forced arbitrarily by covering the light sensor.
Ved forening af de forskellige koblingsbestanddele til en på 10 opsatsen anbringbar komponentenhed fås et driftsfærdigt og kun med tilslutningsledninger forsynet hjælpeapparat, som ved løbende produktion kan tilføjes, men også let kan anbringes senere ved allerede monterede termostatopsatser.By combining the various coupling components into a component unit that can be mounted on the set-up, a ready-to-use auxiliary device is provided which can be added in continuous production, but can also easily be installed later by already installed thermostat sets.
Åbningen i låget sikrer belysningen af lysføleren. Den kan 15 uden videre anbringes således, at belysningen er uafhængig af drejegrebets aktuelle drejestilling.The opening in the lid ensures the illumination of the light sensor. It can easily be positioned so that the lighting is independent of the current turning position of the swivel grip.
En særlig enkel udførelsesform har en parallelt med arbejds-elementets forside forløbende plade, som på den mod arbejds-elementet vendte side bærer varmeelementet og på den anden 20 side kontaktelementet og lysføleren samt er holdt mellem en lågring, som kan påsættes drejegrebet, og et dermed forbundet, åbningen opvisende hus. Lågringen kan svare til den normalt fabrikerede og kan fx på indersiden bære indstillelige ringe med anslag, som sammen med et fremspring på ar-25 bejdselementet bevirker en drejebegrænsning. Alle elektriske, dele kan for-monteres på pladen. Huset tjener som beskyttelse. Montagen af disse tre dele er meget enkel. Derefter kan komponentenheden sættes på drejegrebet som en normal lågring. Endvidere kan varmeelementet udformes som et på 30 pladen liggende modstandslag, som så med stor flade er anbragt tæt ved det termostatiske arbejdselements forside, således at en god Varmeoverførsel er sikret.A particularly simple embodiment has a plate extending parallel to the front of the work element, which carries on the side facing the work element the heating element and, on the other hand, the contact element and the light sensor, and is held between a bearing ring which can be applied to the pivot handle and a connected, opening showing housing. The bearing ring may correspond to the normally manufactured one and may, for example, carry adjustable rings with abutments which together with a projection on the working element cause a pivotal restriction. All electrical parts can be pre-mounted on the plate. The house serves as protection. The assembly of these three parts is very simple. Then the component unit can be applied to the swivel handle as a normal lowering ring. Furthermore, the heating element can be designed as a resistance layer lying on the plate, which is then placed with a large surface close to the front of the thermostatic working element, so that a good heat transfer is ensured.
Ved en foretrukken udførelsesform er kontaktelementet en 4 146668 transistor, hvis basisspænding er styret af lysføleren. En sådan transistor er en lille, i opsatsen let anbringbar komponent, som uden videre formår at omkoble den nødvendige varmeeffekt på fx 1 W. Moderne transistorer kan også bela-5 stes ud over den sædvanlige netspænding på 220 V.In a preferred embodiment, the contact element is a transistor whose base voltage is controlled by the light sensor. Such a transistor is a small, easily positioned component in the set-up, which can easily switch the required heating power to, for example, 1 W. Modern transistors can also be loaded in addition to the usual mains voltage of 220 V.
En kobling, der er meget enkel og særlig tilpasset pladsforholdene i opsatsen, fås, når fotomodstanden sammen med en for-modstand danner en første seriekobling, varmeelementet sammen med transistorens ko1lektor-emitter-strækning danner 10 en anden seriekobling, transistorens basis er forbundet med punktet mellem fotomodstanden og for-modstanden, og når de to seriekoblinger ligger parallelt og i serie med en diode direkte kan tilsluttes netspændingen.A coupling, which is very simple and especially adapted to the space conditions of the set-up, is obtained when the photo resistor together with a resistor forms a first series connection, the heating element together with the radiator-emitter stretch of the transistor forms a second series connection, the base of the transistor is connected to the point between the photo resistor and the resistor, and when the two series connections are parallel and in series with a diode, the mains voltage can be directly connected.
Opfindelsen bliver nedenstående nærmere forklaret ved hjælp 15 af et på tegningen vist udførelseseksempel, der viser i fig. 1 en ventil med en i snit fremstillet, kendt termostatopsats , fig. 2 en adskilt fremstilling af den ændrede termostatopsats ifølge opfindelsen og 20 fig. 3 et kredsløb for natsænkningskoblingen.The invention will be explained in more detail below by means of an exemplary embodiment shown in the drawing, which shows in FIG. 1 shows a valve with a known thermostat set made in section; FIG. 2 is a separate representation of the modified thermostat set according to the invention; and FIG. 3 is a circuit for the night lowering clutch.
Den i fig. 1 viste ventil har et ventilhus 1, på hvilket en termostatopsats 2 er påsat ved hjælp af en spændanordning 3.The FIG. 1, the valve housing 1 has a valve housing 1 on which a thermostat assembly 2 is mounted by means of a clamping device 3.
Et arbejdselement 4 med en væske-damp-fyldning har et skålformet hus 5, som over stivere 6 er forbundet fast med en 25 påspændt foddel 7. Et indre bølgerør 8 virker med sin bund over en stift 9 på en ventilspindel 10, som omstiller det ikke viste lukkestykke mod kraften af en tilbagestillingsfjeder (ikke vist). På bælgelementet 8 angriber endvidere en børværdifjeder 11, som er afstøttet på en plade 12, som med 30 et gevind 13 griber ind i et tilsvarende gevind i et dreje- 5 146668 greb 14, som i nærheden af forsiden har en skulder 15, som ligger an på en tilbagespringende del 16 af forsiden af arbejdselementets hus 5 ved hjælp af børværdifjederens 11 kraft. Drejegrebet har endvidere luftgennemgangsslidser 17.A working element 4 with a liquid-vapor filling has a bowl-shaped housing 5, which is connected above the struts 6 to a clamped foot portion 7. An inner corrugated pipe 8 acts with its bottom over a pin 9 on a valve spindle 10 which adjusts it. not shown closure against the force of a reset spring (not shown). Further, on the bellows member 8, a set-point spring 11, supported on a plate 12, which engages with a thread 13 engages a corresponding thread in a pivot handle 14, which has a shoulder 15 located near the front, on a receding portion 16 of the front of the work member housing 5 by the force of the set-point spring 11. The swivel handle also has air passage slots 17.
5 En lågring 18 er påsnappet drejegrebets 14 raster. Den har en midteråbning 19, som omtrent flugter med en fremspringende del 20 af arbejdselementets 4 forside. En varmeledende opsats 21 er plan med lågringens 18 ydre forside. På lågringens inderside befinder der sig to fortandede ringe 22 og 10 23, som har begrænsningsanslag 24, der virker sammen med et fremspring 25, der er anbragt på arbejdselementet 4. Lågringen 18 har på sin omkredsflade og i givet fald på sin forside en skala.5 A bearing ring 18 is intercepted by the ratchet of the pivot handle 14. It has a central opening 19 which is approximately flush with a protruding portion 20 of the front of the working element 4. A heat conducting assembly 21 is planar with the outer face of the bearing ring 18. On the inside of the bearing ring there are two toothed rings 22 and 10 23 which have restriction stop 24 which cooperates with a projection 25 which is mounted on the working element 4. The bearing ring 18 has a scale on its circumferential surface and, if necessary, on its front side.
Ifølge fig. 2 bliver yderligere en plade 26 anbragt, som på 15 den ene side bærer et varmeelement 27 i form af et elektrisk modstandslag, fx en folie. På den anden side er forskellige elektriske komponenter monteret, nemlig et kontaktelement 28 i form af en transistor, følerelementet 29, fx en lysfølsom modstand, en for-modstand 30 og i givet fald endnu yderligere 20 dele. Til denne plade fører også tilslutningsledningerne 31 og 32. Det tilhørende kabel 33 er forbundet direkte med en netstikprop. Endvidere er et hus 34 anbragt, som i sit inderrum 35 optager de elektriske komponenter 28, 29 og 30 og dækker varmeelementet 27. Huset 34 har en åbning 36, 25 gennem hvilken følerelementet 29, en lysfølsom modstand, påvirkes, fx ved belysning af rummet. Dette hus 34 forbindes med lågringen 18 under mellemlæg af pladen 26, hvorved kablet 33 bliver ført ud mellem delene. Et sådant kombineret låg påsættes drejegrebet 14 på samme måde som en simpel 30 lågring 18.According to FIG. 2, a further plate 26 is provided which on one side carries a heating element 27 in the form of an electrical resistance layer, for example a foil. On the other hand, various electrical components are mounted, namely a contact element 28 in the form of a transistor, the sensor element 29, e.g. Also connected to this plate are the connecting wires 31 and 32. The associated cable 33 is connected directly to a mains plug. Furthermore, a housing 34 is arranged which accommodates in its interior space 35 the electrical components 28, 29 and 30 and covers the heating element 27. The housing 34 has an opening 36, 25 through which the sensor element 29, a light-sensitive resistance, is actuated, for example by illumination of the room. . This housing 34 is connected to the cover ring 18 during the insertion of the plate 26, whereby the cable 33 is extended between the parts. Such a combined lid is applied to the pivoting handle 14 in the same way as a simple lid ring 18.
Af fig. 3 ses det tilhørende kredsløb. Varmeelementet 27 ligger i serie med transistorens 28 kollektor-emitter-strækning. Parallelt til denne seriekobling ligger en anden seriekobling, bestående af for-modstanden 30 og fotomodstan- 6 146668 den 29, fra hvis forbindelsespunkt 37 en ledning afgrener til transistorens 28 basis. De to seriekoblinger ligger parallelt til hinanden og i serie med en diode 38 mellem tilslutningsledningerne 31 og 32, som forsynes af det normale 5 vekselstrømsnet. Så længe fotomodstanden modtager lys, er transistoren 28 spærret. Så snart det bliver mørkt, bliver transistoren 28 ledende. På denne måde sørges der automatisk for, at varmeelementet 27 bliver virksomt ved mørke. Af den opnåede varme overføres en betydelig del til området af 10 lågringens 18 midteråbning 19 på den fremspringende del henholdsvis 20 og 21 af arbejdselementets 4 forside. Derved fås en temperatursænkning i afhængighed af belysningen. En temperatursænkning følger altid, når der er mørkt i rummet.In FIG. 3 shows the associated circuit. The heater element 27 is in series with the collector-emitter section of the transistor 28. Parallel to this series connection is a second series connection, consisting of the resistor 30 and the photo resistor 29, from whose junction 37 a branch branches to the base of the transistor 28. The two series connections are parallel to each other and in series with a diode 38 between the connection lines 31 and 32, which are provided by the normal 5 AC network. As long as the photo resistor receives light, the transistor 28 is blocked. As soon as it gets dark, the transistor 28 becomes conductive. In this way, the heating element 27 is automatically activated in the dark. Of the heat obtained, a significant portion is transferred to the region of the middle opening 19 of the cover ring 18 on the projecting portion 20 and 21, respectively, of the front of the working element 4. This results in a decrease in temperature depending on the lighting. A temperature drop always follows when the room is dark.
Dette giver den ønskede natsænkning og derudover en tempera-15 tursænkning ved mørklagte, altså ikke benyttede rum. Desuden kan man også foretage en temperatursænkning manuelt ved lukning af åbningen 36.This gives the desired night lowering and in addition a temperature lowering in darkened, ie unused rooms. In addition, a temperature reduction can also be done manually by closing the opening 36.
Ved et udførelseseksempel fremkom ved en varmeydelse på 1 W en forhøjelse af arbejdselementets temperatur på 10°C.In one embodiment, at a heat output of 1 W, an increase in the working element temperature of 10 ° C was obtained.
20 Dette svarede til en sænkning af rumtemperaturen på omtrent 6 - 8°C.This corresponded to a lowering of the room temperature of about 6 - 8 ° C.
Claims (5)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2625420 | 1976-06-05 | ||
| DE2625420A DE2625420C2 (en) | 1976-06-05 | 1976-06-05 | Thermostat attachment for a radiator valve |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DK242777A DK242777A (en) | 1977-12-06 |
| DK146668B true DK146668B (en) | 1983-11-28 |
| DK146668C DK146668C (en) | 1984-06-04 |
Family
ID=5979945
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DK242777A DK146668C (en) | 1976-06-05 | 1977-06-02 | THERMOSTAT SET FOR A RADIATOR VALVE |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JPS52150575A (en) |
| DE (1) | DE2625420C2 (en) |
| DK (1) | DK146668C (en) |
| FR (1) | FR2353897A1 (en) |
| GB (1) | GB1576854A (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2905307A1 (en) * | 1979-02-12 | 1980-08-21 | Heimeier Gmbh Metall Theodor | Heating valve thermostat head - has element housing turned by tool inserted through cap end |
| DE3011678C2 (en) * | 1980-03-24 | 1984-06-07 | Manfred Dipl.-Volksw. 1000 Berlin Hirche | Device for thermostat-controlled heating |
| DE3100276A1 (en) * | 1981-01-08 | 1982-10-14 | Manfred 7250 Leonberg Luik | THERMOSTAT FOR ACTUATING A CONTROL UNIT |
| DE3114811C2 (en) * | 1981-04-11 | 1983-03-17 | Harald 4130 Moers Heuser | Electric setpoint adjustment device for thermostatic control valves |
| EP0116667B1 (en) * | 1983-02-22 | 1986-09-24 | Honeywell-Braukmann GmbH | Actuator |
| DE3444858C2 (en) * | 1984-12-08 | 1986-11-20 | Danfoss A/S, Nordborg | Additional device for a radiator thermostatic valve |
| GB8528395D0 (en) * | 1985-11-19 | 1985-12-24 | Driver J P | Thermostatic valve |
| DE3601894A1 (en) * | 1986-01-23 | 1987-07-30 | Anschuetz Regeltechnik Optik | Hydraulic position transmitter |
| FR2596501B1 (en) * | 1986-03-28 | 1990-04-27 | Sdecc | SAFETY DEVICE FOR A GAS BOILER OF THE TYPE WITH CONTROLLED MECHANICAL VENTILATION |
| DE4303153A1 (en) * | 1993-02-01 | 1994-08-04 | Eberhard Dr Schwarzer | Heat exchange controller with photoelectric switch for space heating |
| GB2287788A (en) * | 1994-03-18 | 1995-09-27 | David Arthur Tibbs | Programmable thermostatic radiator etc. valve |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1454417A1 (en) * | 1963-10-17 | 1969-01-23 | Heidenreich Dipl Ing Robert | Central individual room temperature control by means of a self-regulating remote-controlled valve |
| US3352490A (en) * | 1964-08-28 | 1967-11-14 | Pioneer Electric Brandon Ltd | Automatic set-point control for thermostats in room-heating systems |
| DE1579976A1 (en) * | 1966-08-22 | 1970-09-24 | Bulnheim Dipl Ing Herbert | Combined individual control with remote switching on central heating |
| DE1906507B2 (en) * | 1969-02-10 | 1972-12-14 | Witte Haustechnik GmbH, 5860 Iser lohn | ROOM THERMOSTAT |
| DE2121871A1 (en) * | 1971-05-04 | 1972-12-07 | Eberle Werke Kg | Room temperature controller with light-dependent guidance |
| DE2253511A1 (en) * | 1972-10-28 | 1974-05-16 | Vaillant Joh Kg | ARRANGEMENT FOR INDEPENDENT REGULATING THE TEMPERATURE OF A ROOM |
| DE2406748A1 (en) * | 1974-02-13 | 1975-08-21 | Robionek Hans Joachim | Indoor space heating system armature - has electric heating element near expansion member connected to voltage source |
| DE2421810B2 (en) * | 1974-05-06 | 1980-07-03 | Guenter 5000 Koeln Nadrowski | Thermostatic radiator valve |
-
1976
- 1976-06-05 DE DE2625420A patent/DE2625420C2/en not_active Expired
-
1977
- 1977-06-02 DK DK242777A patent/DK146668C/en not_active IP Right Cessation
- 1977-06-03 FR FR7717106A patent/FR2353897A1/en active Granted
- 1977-06-03 JP JP6563877A patent/JPS52150575A/en active Pending
- 1977-06-03 GB GB23658/77A patent/GB1576854A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DK146668C (en) | 1984-06-04 |
| GB1576854A (en) | 1980-10-15 |
| FR2353897A1 (en) | 1977-12-30 |
| DE2625420C2 (en) | 1981-08-27 |
| JPS52150575A (en) | 1977-12-14 |
| DE2625420B1 (en) | 1977-12-08 |
| DK242777A (en) | 1977-12-06 |
| FR2353897B1 (en) | 1983-03-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PBP | Patent lapsed |