CA1077906A - Thermostatic radiator valve - Google Patents
Thermostatic radiator valveInfo
- Publication number
- CA1077906A CA1077906A CA256,591A CA256591A CA1077906A CA 1077906 A CA1077906 A CA 1077906A CA 256591 A CA256591 A CA 256591A CA 1077906 A CA1077906 A CA 1077906A
- Authority
- CA
- Canada
- Prior art keywords
- thermostat
- rotatable member
- spring
- arms
- 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
Links
- 230000006835 compression Effects 0.000 claims 1
- 238000007906 compression Methods 0.000 claims 1
- 239000012080 ambient air Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/01—Control of temperature without auxiliary power
- G05D23/02—Control of temperature without auxiliary power with sensing element expanding and contracting in response to changes of temperature
- G05D23/021—Control of temperature without auxiliary power with sensing element expanding and contracting in response to changes of temperature the sensing element being a non-metallic solid, e.g. elastomer, paste
- G05D23/023—Control of temperature without auxiliary power with sensing element expanding and contracting in response to changes of temperature the sensing element being a non-metallic solid, e.g. elastomer, paste the sensing element being placed outside a regulating fluid flow
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B1/00—Cleaning by methods involving the use of tools
- B08B1/10—Cleaning by methods involving the use of tools characterised by the type of cleaning tool
- B08B1/14—Wipes; Absorbent members, e.g. swabs or sponges
- B08B1/143—Wipes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/52—Means for additional adjustment of the rate of flow
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Temperature-Responsive Valves (AREA)
Abstract
ABSTRACT
A thermostatic radiator valve has a spring loaded thermostat located in a rotatable member with the spring bearing against the thermostat and the rotatable member, the latter having arms surrounding the thermostat, the free end of each arm having a radially inwardly projecting extension which bears against the loading spring.
A thermostatic radiator valve has a spring loaded thermostat located in a rotatable member with the spring bearing against the thermostat and the rotatable member, the latter having arms surrounding the thermostat, the free end of each arm having a radially inwardly projecting extension which bears against the loading spring.
Description
11~7790~
_eld of the Invention The invention relates to a thermostatic radiator valve having a spring loaded thermostat located in a rotatable member, with the said spring bearing against the said thermostat and the said rotating member.
Prior Art __ The rotatable member in the valve has one or more passages through which ambient air may flow and thus reach the thermostat.
The rotatable mem~er is connected by means of a thread to the radiator valve, or to an extension secured thereto. As a result of this, the surface supporting the loading spring at the rotatable member end executes a movement either towards or away from the valve seat, depending upon the direction in which the said rotatable member is rotated. This applies a load to, or relieves the load from, the loading spring, which means that more or less force is required to open the valve. The said loading spring thus assumes the function of a s~afety device against overheating.
Assembly of the thermostat and loading spring requires special tools and accessories and is therefore costly and time consuming, and any repairs to previously known thermostat radiator valves, especially to the thermostats thereof, are therefore complicated. Furthermore, if the thermostat is replaced, the rotating member is often damaged or even destroyed.
Summary of the Invention It is therefore the purpose of the present invention to provide a thermostat radiator valve of the type described above, in which the thermostat and the loading may be assembled or replaced simply, quickly and without expensive tools.
It is proposed to achieve this purpose by means of a thermostat radiator valve in which the arms of the rotatable member preferably run approximately parallel with the valve stem and the longitudinal axis of the thermostat. The latter is l~77sa6 a~sembled, for example, after the rotatable member has been screwed in, in a connecting piece fitted to the radiator valve, above the aperture defined by the free ends of the arms. After the thermostat has been connected to the valve stem, or to an extension thereof, the loading spring is mounted, in the same direction as was the thermostat, in the space defined by the arms, As so~n as the spring has passed right by the extensions fitted to the free ends of the arms, the spring is released, whereupon the outer end thereof bears against the inwardly projecting exten~ions- of the arms, the said thermostat being thus securely held in the rotating member. However, the thermostat and the loading spring may be also assembled before the rotatable member is screwed in, since if the rotatable member is removed, or not screwed in very far, the thermostat bears against the said rotatable member. Upon insertion, the spring should be radially compressible; instead of, or in addition to, this, the free ends of the arms may be sprung resiliently outwards ~or assembly of the spring and, possibly, of the thermostat. In this connection, it is particularly desirable for the arms and the rotatable member to be in one piece, more particularly in the form of a ~lastic in,jection moulding.
Two arms at 180 to each other, each with an inwardly ~rolecting extensionl suffice to support the outer end of the spring. In ~ractice, however, at least three and preferably
_eld of the Invention The invention relates to a thermostatic radiator valve having a spring loaded thermostat located in a rotatable member, with the said spring bearing against the said thermostat and the said rotating member.
Prior Art __ The rotatable member in the valve has one or more passages through which ambient air may flow and thus reach the thermostat.
The rotatable mem~er is connected by means of a thread to the radiator valve, or to an extension secured thereto. As a result of this, the surface supporting the loading spring at the rotatable member end executes a movement either towards or away from the valve seat, depending upon the direction in which the said rotatable member is rotated. This applies a load to, or relieves the load from, the loading spring, which means that more or less force is required to open the valve. The said loading spring thus assumes the function of a s~afety device against overheating.
Assembly of the thermostat and loading spring requires special tools and accessories and is therefore costly and time consuming, and any repairs to previously known thermostat radiator valves, especially to the thermostats thereof, are therefore complicated. Furthermore, if the thermostat is replaced, the rotating member is often damaged or even destroyed.
Summary of the Invention It is therefore the purpose of the present invention to provide a thermostat radiator valve of the type described above, in which the thermostat and the loading may be assembled or replaced simply, quickly and without expensive tools.
It is proposed to achieve this purpose by means of a thermostat radiator valve in which the arms of the rotatable member preferably run approximately parallel with the valve stem and the longitudinal axis of the thermostat. The latter is l~77sa6 a~sembled, for example, after the rotatable member has been screwed in, in a connecting piece fitted to the radiator valve, above the aperture defined by the free ends of the arms. After the thermostat has been connected to the valve stem, or to an extension thereof, the loading spring is mounted, in the same direction as was the thermostat, in the space defined by the arms, As so~n as the spring has passed right by the extensions fitted to the free ends of the arms, the spring is released, whereupon the outer end thereof bears against the inwardly projecting exten~ions- of the arms, the said thermostat being thus securely held in the rotating member. However, the thermostat and the loading spring may be also assembled before the rotatable member is screwed in, since if the rotatable member is removed, or not screwed in very far, the thermostat bears against the said rotatable member. Upon insertion, the spring should be radially compressible; instead of, or in addition to, this, the free ends of the arms may be sprung resiliently outwards ~or assembly of the spring and, possibly, of the thermostat. In this connection, it is particularly desirable for the arms and the rotatable member to be in one piece, more particularly in the form of a ~lastic in,jection moulding.
Two arms at 180 to each other, each with an inwardly ~rolecting extensionl suffice to support the outer end of the spring. In ~ractice, however, at least three and preferably
2~ more arms with inwardly projecting extensions will be used, and it is desirable that each arm is so fitted. The width of the said arms, and the distance between them in the peripheral direction of the rotatable member, are governed by thermostat ventilation requirements.
According to a further configuration of the invention, a pressure disc is interposed between the loading spring and the B
10779~
extensions on the arms of the rotatable member. This pressure disc may be inserted into the space in the rotatable member aefined by the arms in the same way as the thermostat and the loading spring were previously inserted. In assembling at least the loading spring and the pressure disc, it is particularly desirable that the free ends of the arms be provided with chambers by means of which the said arms may easily be expanded radially. Furthermore, the inwardly projecting extensions need not necessarily be located at the free ends of the arms.
Instead, should other requirements make it necessary, the said extensions may be located at a greater or lesser distance from the said free enas.
According to still another configuration of the invention, the pressure disc has a central bore serving to guide the thermostat or an element connection thereto. The thermostat is thus guided in the direction of displacement at both ends, and the said pressure disc therefore fulfills two functions.
According to another variant of the invention, the free end of each arm has an extension projecting radially outwards and engaging in an annular groove in a rotatable knob. The ; outwardly projecting extensions on the free ends of the arms make it possible to snap this knob onto the rotatable member, upon which it may be secured against rotation by means of serrations, for example. Naturally, the rotatable knob also ; 25 has corresponding apertures preferably arranged as radial extensions of the spaces between the arms of the rotating member. Here again, it is highly desirable for the outwardly projecting extensions to be chamfered. If a pressure disc is used, this chamfering must not prevent the rotating knob from being snapped on.
According to still another characteristic of the invention, ; the loading spring may be in the form of a conical coil spring, with the larger diameter end bearing against the inner extensions .
''i' ~07790t;
to the arms. It is desirable for the thermos-tat to be supported on three lugs, cams, or the like on the rotatable member, upon which it rests, for example, when the unit consisting of the rotatable knob, the rotatable member, the thermostat, and the loading spring, is removed or pre-assembled. The said thermostat may also rest upon the said lugs when the rotatable member is screwed only slightly onto the valve or onto an intermediate part.
Description of the Drawings The invention will now be described in relation to the accompanying drawings, in which:
Figure 1 is a vertical section through the thermostat radiator valve according to the invention;
Figure 2 is a detail from Figure 1, on an enlarged scale;
Figure 3 is also a detail from Figure 1, on an enlarged sacle, with an additional pressure disc.
Description of a Preferred Embodiment Housing 1 of the thermostat radiator valve, valve stem 2 with its valve plate 3, and all-parts contained in neck area 4 for sealing inner chamber 5 of the valve, and for guiding and sealing the valve stem, may be of conventional design. The same applies to cap 6 which is secured to threaded ring 7 by means of a snap connection 8. Tubular part 9 of cap 6 has an internal thread 10 into which threaded connector 11 of a rotatable member 12 is screwed to a greater or lesser extent.
Thermostat 13 passes through a central bore 14 in rotatable member 12, working piston 15 of the said thermostat engaging in a slot, or central opening, in pin-shaped stem extension 16.
In Figure 1, collar 17 of the thermostat lies flat on bottom 18 of rotatable member 12, whereas in Figure 2 it rests upon three cams 19 distributed uniformily in the peripheral direction, being kept in this position by loading spring 20 in the form of a conical coil spring, the smaller diameter inner end of which 107790~;
bears against collar 17, whereas the larger diameter outer end bears against a plurality of inwardly projecting extensions 21 of arms 22 distributed uniformily around the periphery. As shown in Figure 3, this support may be effected indirectly by means of a pressure disc 23.
Arms 22 are manufactured in one piece with rotatable member 12, and they run preferably parallel with the longitudinal axis of valve stem 2 and thermostat 13. Rotatable member 12 preferably has at least three arms 22 distributed uniformily around the periphery thereof, each of the said arms being provided with an inner extension 21 and a radially outwardly projecting extension 24, the purpose of which will be explained hereinafter. Arms 22 are adapted to bend resiliently in the direction of arrow 25. Inwardly projecting extensions 21 have chamfers 26 and outwardly projecting extensions 24 have chamfers 27.
Thermostat 13 is inserted, in the direction of arrow 28, into the interior 29 of rotatable member 12. Journal- shaped extension 30 of the said thermostat is held in central bore 14 of rotatable member 12. Loading spring 20 is then introduced in the same direction, until it engages under inner extensions 21, to which end arms 22 may be forced radially outwards and then allowed to spring back again. The introduction of the spring, and possibly that of pressure disc 23, is facilitated by chamfers 26 on inner extensions 21. A cup shaped rotatable knob 31 is thenslipped over rotatable member 12, at which time outer extensions 24 snap into annular groove 32. The said rotatable ~nob is also connected positively to, and secured against rotation on, rotatable member 12 by means of serrations 33 or the like.
The medium, for example hot water, flows into housing 1 in the direction of arrow 34, at which time the valve is opened by the lifting of valve plate 3. As a result of this, : ~ - 5 -':
.
~,o77906 thermostat 13 is lifted from bottom 18, or cams 19, against the force of loading spring 20. When collar 17 of the said thermostat rests upon floor 18 or cams 19, the force of the loading spring can no longer act upon valve stem 2. For this reason, a closing spring 36 is also provided for valve plate
According to a further configuration of the invention, a pressure disc is interposed between the loading spring and the B
10779~
extensions on the arms of the rotatable member. This pressure disc may be inserted into the space in the rotatable member aefined by the arms in the same way as the thermostat and the loading spring were previously inserted. In assembling at least the loading spring and the pressure disc, it is particularly desirable that the free ends of the arms be provided with chambers by means of which the said arms may easily be expanded radially. Furthermore, the inwardly projecting extensions need not necessarily be located at the free ends of the arms.
Instead, should other requirements make it necessary, the said extensions may be located at a greater or lesser distance from the said free enas.
According to still another configuration of the invention, the pressure disc has a central bore serving to guide the thermostat or an element connection thereto. The thermostat is thus guided in the direction of displacement at both ends, and the said pressure disc therefore fulfills two functions.
According to another variant of the invention, the free end of each arm has an extension projecting radially outwards and engaging in an annular groove in a rotatable knob. The ; outwardly projecting extensions on the free ends of the arms make it possible to snap this knob onto the rotatable member, upon which it may be secured against rotation by means of serrations, for example. Naturally, the rotatable knob also ; 25 has corresponding apertures preferably arranged as radial extensions of the spaces between the arms of the rotating member. Here again, it is highly desirable for the outwardly projecting extensions to be chamfered. If a pressure disc is used, this chamfering must not prevent the rotating knob from being snapped on.
According to still another characteristic of the invention, ; the loading spring may be in the form of a conical coil spring, with the larger diameter end bearing against the inner extensions .
''i' ~07790t;
to the arms. It is desirable for the thermos-tat to be supported on three lugs, cams, or the like on the rotatable member, upon which it rests, for example, when the unit consisting of the rotatable knob, the rotatable member, the thermostat, and the loading spring, is removed or pre-assembled. The said thermostat may also rest upon the said lugs when the rotatable member is screwed only slightly onto the valve or onto an intermediate part.
Description of the Drawings The invention will now be described in relation to the accompanying drawings, in which:
Figure 1 is a vertical section through the thermostat radiator valve according to the invention;
Figure 2 is a detail from Figure 1, on an enlarged scale;
Figure 3 is also a detail from Figure 1, on an enlarged sacle, with an additional pressure disc.
Description of a Preferred Embodiment Housing 1 of the thermostat radiator valve, valve stem 2 with its valve plate 3, and all-parts contained in neck area 4 for sealing inner chamber 5 of the valve, and for guiding and sealing the valve stem, may be of conventional design. The same applies to cap 6 which is secured to threaded ring 7 by means of a snap connection 8. Tubular part 9 of cap 6 has an internal thread 10 into which threaded connector 11 of a rotatable member 12 is screwed to a greater or lesser extent.
Thermostat 13 passes through a central bore 14 in rotatable member 12, working piston 15 of the said thermostat engaging in a slot, or central opening, in pin-shaped stem extension 16.
In Figure 1, collar 17 of the thermostat lies flat on bottom 18 of rotatable member 12, whereas in Figure 2 it rests upon three cams 19 distributed uniformily in the peripheral direction, being kept in this position by loading spring 20 in the form of a conical coil spring, the smaller diameter inner end of which 107790~;
bears against collar 17, whereas the larger diameter outer end bears against a plurality of inwardly projecting extensions 21 of arms 22 distributed uniformily around the periphery. As shown in Figure 3, this support may be effected indirectly by means of a pressure disc 23.
Arms 22 are manufactured in one piece with rotatable member 12, and they run preferably parallel with the longitudinal axis of valve stem 2 and thermostat 13. Rotatable member 12 preferably has at least three arms 22 distributed uniformily around the periphery thereof, each of the said arms being provided with an inner extension 21 and a radially outwardly projecting extension 24, the purpose of which will be explained hereinafter. Arms 22 are adapted to bend resiliently in the direction of arrow 25. Inwardly projecting extensions 21 have chamfers 26 and outwardly projecting extensions 24 have chamfers 27.
Thermostat 13 is inserted, in the direction of arrow 28, into the interior 29 of rotatable member 12. Journal- shaped extension 30 of the said thermostat is held in central bore 14 of rotatable member 12. Loading spring 20 is then introduced in the same direction, until it engages under inner extensions 21, to which end arms 22 may be forced radially outwards and then allowed to spring back again. The introduction of the spring, and possibly that of pressure disc 23, is facilitated by chamfers 26 on inner extensions 21. A cup shaped rotatable knob 31 is thenslipped over rotatable member 12, at which time outer extensions 24 snap into annular groove 32. The said rotatable ~nob is also connected positively to, and secured against rotation on, rotatable member 12 by means of serrations 33 or the like.
The medium, for example hot water, flows into housing 1 in the direction of arrow 34, at which time the valve is opened by the lifting of valve plate 3. As a result of this, : ~ - 5 -':
.
~,o77906 thermostat 13 is lifted from bottom 18, or cams 19, against the force of loading spring 20. When collar 17 of the said thermostat rests upon floor 18 or cams 19, the force of the loading spring can no longer act upon valve stem 2. For this reason, a closing spring 36 is also provided for valve plate
3. By screwing in rotatable member 12 to a greater or lesser extent, it is possible to achieve a connection without play between thermostat 13, stem extension 16, and stem 2, even when collar 17 is resting upon floor 18 or cams 19. Ambient air, the temperature of which controls the thermostat radiator valve, reaches the housing of thermostat 13 through radial slots in rotatable knob 31 and the spaces between arms 22.
Upon being heated, the thermostat housing moves upwardly in relation to piston 15, against the force of spring 20.
.~ .
' ~ .
.
:
, ',
Upon being heated, the thermostat housing moves upwardly in relation to piston 15, against the force of spring 20.
.~ .
' ~ .
.
:
, ',
Claims (6)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A thermostatic radiator valve having in combination an apertured housing, a valve seat in said housing, a valve plate engageable with said valve seat, a valve stem having one end secured to said valve plate with the other end extending outwards of said housing through the aperture in said housing, a spring loaded thermostat operable against said other end of said valve stem and a rotatable member having means for securement to said housing and extending therefrom with one end of the spring bearing against said thermostat and the other end against said rotatable member, characterised in that the latter has resilient arms surround-ing said thermostat concentrically with each of said arms having in the vicinity of its free end an inwardly projecting extension with said other end of said spring engaging said extensions.
2. A radiator valve according to Claim 1, characterised in that a pressure disc is interposed between said loading spring and said inwardly projecting extensions.
3. A radiator valve according to Claim 2, characterised in that said pressure disc is provided with a central bore as a guide for said thermostat.
4. A radiator valve according to Claim 1, characterised in that the free end of each said arm has an outwardly projecting extension, a knob on said rotatable member, an annular groove in said knob with said outward extensions engaging in said annular groove.
5. A radiator valve according to Claim 1, characterised in that the loading spring is in the form of a conical coil compression spring, the larger diameter end of which bears against the inwardly projecting extensions of said arms.
6. A radiator valve according to Claim 1, characterised in that said thermostat is supported on three lugs on said rotatable member.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19752531555 DE2531555A1 (en) | 1975-07-15 | 1975-07-15 | THERMOSTAT RADIATOR VALVE |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1077906A true CA1077906A (en) | 1980-05-20 |
Family
ID=5951556
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA256,591A Expired CA1077906A (en) | 1975-07-15 | 1976-07-08 | Thermostatic radiator valve |
Country Status (10)
| Country | Link |
|---|---|
| AT (1) | AT349178B (en) |
| CA (1) | CA1077906A (en) |
| CH (1) | CH598554A5 (en) |
| DE (1) | DE2531555A1 (en) |
| DK (1) | DK320076A (en) |
| FR (1) | FR2318368A1 (en) |
| GB (1) | GB1523179A (en) |
| IT (1) | IT1067457B (en) |
| NL (1) | NL7607423A (en) |
| SE (1) | SE7607660L (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3236372C2 (en) * | 1982-10-01 | 1987-04-30 | Danfoss A/S, Nordborg | Thermostat attachment for a valve |
| CN1323252C (en) * | 2005-01-18 | 2007-06-27 | 广州海鸥卫浴用品股份有限公司 | Automatic temperature control heating valve |
| GB0814959D0 (en) * | 2008-08-15 | 2008-09-24 | Pegler Ltd | Compact control head for a thermostatic valve |
-
1975
- 1975-07-15 DE DE19752531555 patent/DE2531555A1/en active Pending
-
1976
- 1976-06-29 GB GB27059/76A patent/GB1523179A/en not_active Expired
- 1976-07-05 SE SE7607660A patent/SE7607660L/en unknown
- 1976-07-06 NL NL7607423A patent/NL7607423A/en unknown
- 1976-07-08 CA CA256,591A patent/CA1077906A/en not_active Expired
- 1976-07-13 CH CH902376A patent/CH598554A5/xx not_active IP Right Cessation
- 1976-07-13 FR FR7621441A patent/FR2318368A1/en not_active Withdrawn
- 1976-07-14 IT IT25318/76A patent/IT1067457B/en active
- 1976-07-15 AT AT521976A patent/AT349178B/en active
- 1976-07-15 DK DK320076A patent/DK320076A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| FR2318368A1 (en) | 1977-02-11 |
| NL7607423A (en) | 1977-01-18 |
| AT349178B (en) | 1979-03-26 |
| DE2531555A1 (en) | 1977-02-03 |
| CH598554A5 (en) | 1978-04-28 |
| DK320076A (en) | 1977-01-16 |
| SE7607660L (en) | 1977-01-16 |
| ATA521976A (en) | 1978-08-15 |
| IT1067457B (en) | 1985-03-16 |
| GB1523179A (en) | 1978-08-31 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |