CN101939715A

CN101939715A - A thermostat

Info

Publication number: CN101939715A
Application number: CN2008801049501A
Authority: CN
Inventors: 拜贾恩·弗雷德里克森; 安德斯·O·克劳森
Original assignee: Danfoss AS
Current assignee: Danfoss AS
Priority date: 2007-08-28
Filing date: 2008-08-26
Publication date: 2011-01-05
Also published as: EP2195717A2; RU2010110674A; WO2009026922A2; WO2009026922A3

Abstract

The invention provides a thermostat for controlling a room temperature by operating a valve of a radiator. To prevent unintended adjustment of the temperature, the thermostat comprises a locking structure which may prevent changing of a temperature set-value. The thermostat comprises a handle for setting the set-value by rotation of the handle relative to the base, and to improve the thermostat and to provide a more simple operation of the thermostat, the handle is also moveable relative to the base for locking and unlocking the locking structure.

Description

Temperature controller

Technical field

The present invention relates to a kind of temperature controller that for example is used for heating radiator and convection type heater, more specifically, relate to a kind of temperature controller with latch-up structure, this latch-up structure prevents the variation of the setting value selected for preferred temperature.

Background technology

The temperature controller of mentioned kind can be used in conjunction with refrigeration and air-conditioning system and the heating hot state that controls environment, and wherein hot facility is used for cooler environment in refrigeration and air-conditioning system, and hot facility is used for heating environment in the heating.Below, the temperature controller operation valve of consider discussing and thereby the hot state that controls environment, and its can be applicable to heat and refrigeration system in.

Setting value is represented desired temperatures, and thermal sensing element is adjusted shoulder (shoulder) position according to the temperature of sensing.Related valves typically has mandrel, and this mandrel is slidingly received in the valve shell.Mandrel operation valve parts are with respect to the position of valve seat, and thereby the flow of control by valve.Shoulder is near mandrel, and when shoulder when mandrel moves, mandrel thereby move, therefore the flow by valve changes according to moving of shoulder.

Produced the safety element of the temperature controller that for example is used for heating radiator, convection type heater and/or floor heating system, thereby guaranteed that such temperature controller does not have the accident variation of desired temperature.

Common temperature controller comprises swing handle, and it is used to adjust the temperature value of expectation, and common safety element, develops this common safety element to prevent to contact this swing handle.

GB 1 564 047 has disclosed a kind of example of this safety element.Disclosed thermostatic mixing valves comprises the edge that surrounds the rotation release handle and the safety feature of linkage unit, and this safety feature can be clamped to it on to prevent that handle from rotating with respect to linkage unit, prevents the handle rotation thus, thus energy savings and prevent having things stolen of temperature controller.

EP 0 702 764 B1 have disclosed a kind of safety feature, and it can be locked in swing handle in the optional value range.

Summary of the invention

The objective of the invention is to improve existing temperature controller, and reduce the unexpected risk of adjusting of temperature controller in simpler mode.Therefore, the invention provides a kind of temperature controller with latch-up structure, this latch-up structure can be controlled with respect to the motion of base portion by handle, with conversion between lock-out state and unlock state, the variation of chosen temperature setting value is under an embargo under described lock-out state, and the chosen temperature setting value is allowed under described unlock state.Because latch-up structure can be by the motion control of handle, and the motion of handle is used to select setting value, therefore temperature controller becomes and is highly susceptible to making and using, and the design meeting covers temperature controller than locking device and change the temperature controller of its outward appearance simpler and attractive in appearance.In addition, can avoid the outside locking device that connects may the performance of the correct senses room temperature of temperature controller be exerted an influence.

Base portion can form flange or cavity, and it has and helps the structure that temperature controller is connected with the matching structure of valve.Therefore base portion is used to keep temperature controller to be in valve to fixedly connected, or releasable at least fixedly connected.Base portion even can form the part of valve, thus temperature controller forms the part of valve.

Handle and base portion can form shell structure, and described shell structure encapsulation thermal sensing element, handle are set the other parts of structure, latch-up structure and/or the temperature controller of setting value.

Can allow handle to center on the axis rotation, for example extend through the axis of shoulder.Particularly, rotation can with poppet shaft during head movement towards with the institute of sliding away from temperature controller along parallel axes or coaxial.

Thermal sensing element can be the known kind from existing temperature controller, and for example wherein material and is pushed to related valves by the increase bar of material volume based on its temperature and changeable volume.

Hereinafter, " forward " expression is towards the motion of base portion and valve, and " backward " expression is away from the motion of base portion and valve.Latch-up structure can be controlled by the translation motion forward or backward of handle, for example centers on its axis with respect to the base portion rotation along handle.

Latch-up structure can for example provide forbidding of the rotation of handle with respect to base portion and allow.In one embodiment, by the first surface decorative pattern being set on the base portion and being provided with on the handle that thereby second surface decorative pattern surface detail is engaged with each other and prevent that handle from rotating with respect to base portion on the axial location of handle with respect to base portion, to forbid and to allow rotation.First and second surface details can be arranged to: they are engaged with each other during the slip forward or backward of handle with respect to base portion.Therefore surface detail can comprise recessed and protrusion, joint (knop), groove and the tongue-like part etc. of cooperation, mainly is the type of extending with respect to the line on the base portion glide direction along handle.

Temperature controller can comprise the setting value structure, and described setting value structure cooperates with handle with according to the mobile thermal sensing element of the rotation of handle.The setting value structure can comprise and is suitable for the 3rd surface detail that cooperates with the second surface decorative pattern.The 3rd surface detail can be corresponding to first and second surface details (surface pattern), and the second and the 3rd surface detail can be arranged to allow handle with respect to the slip forward or backward of base portion the second and the 3rd surface detail to be broken away from.

In the above-mentioned surface detail at least one can comprise band tooth surface part.In one embodiment, handle comprises interior tooth surface.In this embodiment, base portion and/or setting value structure can all have the band tooth surface of coupling, the straight-tooth of Yan Shening especially in axial direction, thus handle can move in the direction, and the tooth that is engaged with each other simultaneously can slide relative to each other along direction of motion.In selectivity embodiment, it is outstanding that in base portion and the setting value structure one or both can comprise, this is outstanding to be bonded between two teeth of the band tooth surface part on the handle.

Temperature controller can comprise bias structure, this bias structure is in the lock state handle towards locking device location bias.This bias unit can for example comprise that perhaps it can comprise gas such as volute spring or dish spring, when handle move to locking device when being in the position of unlock state this gas be compressed.

Temperature controller can further comprise scale (dial), and described scale is represented the chosen temperature setting value.If handle can slide with respect to base portion, when latch-up structure was in the lock state, scale can be covered by handle or base portion, and wherein handle exposes scale with respect to the athletic meeting of base portion.

Description of drawings

Referring now to accompanying drawing the preferred embodiments of the present invention are described in further detail, wherein:

Fig. 1 has shown temperature controller of the present invention;

Fig. 2 and 3 has shown the motion of handle between locking and non-locked position;

Figure 4 and 5 have shown the xsect of the latch-up structure that amplifies; With

Fig. 6 has shown the exploded view of temperature controller.

Embodiment

With reference to Fig. 1, temperature controller 1 according to the present invention comprises thermal sensing element, and this thermal sensing element moves shoulder, and it is suitable for adjusting the flow by valve thus, and this valve is connected in the open front 2.Thermal sensing element and shoulder are contained in the chamber 3, but do not show among Fig. 1.Temperature controller also comprises valve base portion 4, handle 5, and latch-up structure, and this latch-up structure illustrates in further detail with reference to accompanying drawing subsequently.In the front view mode, Fig. 2 and 3 has shown that handle 5 can slide between locking and non-locked position with respect to base portion with translation mode.Temperature controller comprises setting value structure 6, and it comprises internal thread 7, its make thermal sensing element and shoulder along forwards to move towards valve-arrow 8 expressions forwards to and the opposite backward directions of arrow 9 expressions.

Among Fig. 2, locking device is in the lock state, and base portion 4 and handle 5 and opening 2 formation closed housings, can hold valve.The position of handle shown in Fig. 25, to be handle 5 will be called latched position with respect to the front position of base portion 4.

Among Fig. 3, handle 5 changes to unlock state along the translation of the axis of dotted line 10 expressions with locking device, and in unlock state, handle 5 rotates around axis 10 with respect to base portion 4.Handle 5 will be called the non-locked position of handle with respect to the rearmost position of base portion 4.

Fig. 4 has shown the amplification xsect of latch-up structure.Latch-up structure comprises first surface decorative pattern or model (surface pattern) 11, and it is arranged on the base portion 4, and when handle 5 is in the front position be arranged on handle 5 on second surface decorative pattern 12 engage.In this embodiment, the first surface decorative pattern is made of the outer tooth surface on the outside inward flange 13 that is formed on base portion 4, and the second surface decorative pattern is made of the interior tooth surface on the flange 14 that is arranged on handle 5.In the Fig. 6 that shows the temperature controller decomposition view, can see surface model better.In Fig. 4, first and second surface details are engaged with each other, and forbid the rotation of handle with respect to base portion thus, and thereby forbid the variation of setting value.

Fig. 5 has shown the view corresponding to the temperature controller of Fig. 4, but handle is in latched position.

Display setting value structure 6 best in Fig. 6.The 3rd surface detail 15 is made of the band tooth surface 15 on the outside surface.The 3rd surface detail 15 is also engaged by second surface decorative pattern 12, and when handle 5 is in non-locked position, the rotation of handle 5 can be delivered to setting value structure 6, this setting value structure 6 via internal thread 7 with rotation be transformed into thermal sensing element and shoulder along towards or away from the translation motion on the valve direction.

Claims

1. a temperature controller (1), this temperature controller can be connected to valve, described temperature controller (1) comprises thermal sensing element, described thermal sensing element is suitable for adjusting flow by valve according to the temperature sensed and desired temperature, described temperature controller further comprises valve base portion (4), handle (5), and latch-up structure (11,12), wherein said handle (5) can utilize with respect to the rotation of described base portion (4) and move between the position, angle, select different desired temperatures thus, and described latch-up structure (11,12) can control with respect to the motion of described base portion (4) by described handle (5), thereby conversion between lock-out state and unlock state, under described lock-out state, the variation of chosen temperature setting value is under an embargo, and under described unlock state, the variation of chosen temperature setting value is allowed to.

2. temperature controller according to claim 1, wherein, described latch-up structure (11,12) can be controlled by the translation motion of described handle (5).

3. temperature controller according to claim 2, wherein, the translation motion of described handle (5) is along an axis, and described handle (5) rotates with respect to described base portion (4) around this axis.

4. according to each described temperature controller in the aforementioned claim, wherein, described latch-up structure (11,12) is suitable for by forbidding and allowing described handle (5) to forbid and allow the variation of selected temperature setting value with respect to described base portion (4) rotation.

5. according to each described temperature controller in the aforementioned claim, wherein, described latch-up structure comprises the first surface decorative pattern that is arranged on the described base portion (4), described first surface decorative pattern be arranged to be arranged on described handle (5) on second surface decorative pattern (12) engage.

6. according to each described temperature controller in the aforementioned claim, comprise setting value structure (6), described setting value structure cooperates with the rotation based on handle (5) with described handle (5) and moves described thermal sensing element, described setting value structure (6) comprises the 3rd surface detail (15), and described the 3rd surface detail (15) is suitable for cooperating with described second surface decorative pattern (12).

7. according to each described temperature controller among the claim 5-6, wherein, at least one in the described surface detail (11,12,15) comprises the band tooth surface.

8. according to each the described temperature controller in the aforementioned claim, comprise being used to make the bias structure of described latch-up structure (11,12) to the lock-out state biasing.

9. according to each the described temperature controller in the aforementioned claim, the scale that comprises indication selected temperature setting value, wherein said scale is covered by described handle (5) or described base portion (4) when being in the lock state at described latch-up structure (11,12), and wherein said handle (5) with respect to described base portion (4) thus motion make described latch-up structure be transformed into unlock state to expose described scale from lock-out state.

10. according to each the described temperature controller in the aforementioned claim, wherein, described base portion (4) and described handle (5) form the shell structure of sealing, the described latch-up structure of described closed housing construction packages (11,12) together.

11. temperature controller according to claim 10, wherein, described latch-up structure (11,12) is between described closed housing structure and described thermal sensing element.