CN1427195A

CN1427195A - Heating body valve

Info

Publication number: CN1427195A
Application number: CN02157032.9A
Authority: CN
Inventors: F·加姆
Original assignee: Danfoss AS
Current assignee: Danfoss AS
Priority date: 2001-12-20
Filing date: 2002-12-19
Publication date: 2003-07-02
Anticipated expiration: 2022-12-19
Also published as: PL357542A1; GB2384545B; GB2384545A; FR2834036B1; DE10162604A1; RU2245473C2; FR2834036A1; PL205100B1; DE10162604B4; CN1231689C; GB0229590D0; CZ20024218A3

Abstract

The invention relates to a heating body valve comprises a valve seat surrounding an orifice (19) able to be sealed by an valve component. In a closed position, the valve component is applied against the seat along a closing line (20-22). Thus, larger flow rate can be achieved even without changing the shape size. The closing line comprises at least an segment (22) inwards directing into the orifice (19) and a free space (23) is provided outside along the closing line (20-22) on the closed position of the valve component.

Description

Heating body valve

Technical field

The present invention relates to a kind of heating body valve, it has a valve seat that surrounds a hole, and this hole can be closed by a valve element, and this valve element is abutting on the valve seat along a closed line on the closed position.

Background technique

This heating body valve generally also uses in the most heating unit or on the heating unit as everyone knows.The valve element that is also referred to as " valve cone " passes through a spring pretension on the direction in hole, on the direction of just lifting off a seat.A kind of operation equipment, normally a kind of thermostat valve cap is closed power according to the room temperature situation to one of valve element effect, if necessary, this power of closing will make valve element abut on the valve seat.Thereby will make heating liquid end to continue to flow in the heating unit.Valve element just abuts on the valve seat along closed line.This closed line is not a line on the accurate meaning of mathematics, but its areal extent of a relative narrower normally comes in contact between valve element and valve seat in this scope.

A kind of boundary dimension of such Radiator valve is conditional.For example the Conncetion cimension of heating unit is just played a role herein, but the space proportion around heating unit also has effect.This just makes the external diameter of valve seat can not surpass a predetermined size.Same valve element also is restricted with respect to the stroke height of valve seat.

Summary of the invention

Task of the present invention is can realize bigger through-current capacity when not changing boundary dimension.

The solution method finished of this task in a kind of heating body valve of the described kind of beginning is: closed line has a line segment that points to inwards in the hole at least, and the outside along closed line simultaneously the closed position of valve element be provided with a cavity.

Strengthened with respect to a simple circumference that surrounds this hole with regard to making closed line with this design proposal.Thereby a bigger area of section is just arranged when valve element when valve seat lifts, heating liquid is flow through.Certainly its precondition is: there is a cavity in the both sides in closed line, and heating liquid can not have throttling ground by this cavity and flows.If this cavity just exists on closed position, so when valve element lift off a seat a bit of apart from the time, cavity yet reservation.The amplification of closed line in fact also makes liquid can not have the outflow transverse section of flowing through on throttling ground and has strengthened.

Preferably be provided with a plurality of peripheral uniform line segments round the hole.The line segment that is provided with is many more, and closed line is just long more, if just the element of valve is when valve seat lifts, the flow cross-section that liquid can flow through is just big more.Uniformly just guaranteed certain symmetry, thereby when thermal liquid flows through, made the even stand under load of valve element.This has just reduced the vibrative tendency of valve element.

Preferably make with respect to one by directly upwards the plane that outmost circumferential segment limited in hole, leaving valve element and tilting.Thereby closed line is that what is called is outside in pointed to for recessed earth tilt.Valve element is next in off position must to be roughly convex shape.The advantage of this design proposal is: when valve opening, just valve is when valve seat lifts, at first in the centre, just at the section place that radially is positioned at the inside of closed line, between valve element and valve seat, produced a little gap, just can produce little flow of fluid by this little gap.Along with this gap of weakening that acts on the closing pressure on the valve element just becomes bigger, until the final valve gating element lifts from valve seat fully.Because this opening feature just can carry out very sensitive control to the thermal liquid that flows through this valve when beginning to open.

To pay the utmost attention to especially herein, make this line segment leave the ultimate range on plane in 0.1 to 0.2mm scope.This line segment the inner can be easily with respect to a kind of so little reduction of its outer end distortion by valve element adapt to and bear.But it allows the thermal liquid by valve is carried out above-mentioned very sensitive control.

Preferably with seat design on a valve base element, cavity is then formed by the vacancy in the valve base element.The advantage of this design proposal is to use a kind of traditional valve element that is actually the ring shape surface of contact that has.Contact between this surface of contact of valve seat and valve element is then carried out along closed line, and this closed line no longer is confined on a circular scope on the valve element edge, but also acts on radially inwards the areal extent again of valve element.Owing to outside closed line, be provided with vacancy, that is to say in the place that the section of closed line is radially extended inwards and guaranteed: essential through-flow transverse section is arranged immediately for using at valve element from valve seat lifts after, this transverse section allow bigger through-current capacity and thereby guaranteed valve than ability greatly.

Vacancy preferably has an inclined bottom.This design proposal has the advantage on the mechanics.Accept on the valve base element mechanics of fixing valve seat more stable.Closed line no longer only is arranged on the top arris of " wallboard ", but is supported by the body of valve base element reliably.

Especially preferred herein be make the bottom from outside transit to closed line.In fact closed line is supported to enough degree on its whole length.In addition by this inclination, from outside transit to closed line the bottom when closed line is flooded, liquid is passed through gently.This just makes the valve noise low.Though this low-noise characteristic of valve as the favourable effect of paying be anyway since the lengthening and the relevant therewith less pressure of closed line fall (with traditional valve when the identical raising height relatively), it still has been improved by the design of bottom.

Here pay the utmost attention to and make inclination angle, bottom size in 30 ° to 90 ° scopes.Enough mechanical stabilities have been guaranteed at this inclination angle on the one hand, allow to make valve to circulate on relatively low noise ground but then.

Can stipulate in that substitute at another or the additional technological scheme: cavity designs in valve element, and valve element is supported rotationally with respect to valve seat is anti-.If valve element supports rotationally with respect to valve seat is anti-, so just vacancy can be set like this in valve element, thereby make it consistent with the trend of closed line, even that is to say in these sections that radially inwardly point to of closed line always has enough cavity to supply usefulness outside closed line, thermal liquid can flow through this cavity.

The closed line preferred design becomes star.Design with a kind of star just can produce a relatively long closed line in little space.

The raising height limit of valve element is adjustable in a kind of optimized technical scheme.Can give elder generation with this raising height limit and adjust the peak rate of flow of thermal liquid by valve.To this known applications a kind of " baffle plate ", it has one variable to be added to a lid on the tap hole in the shell that is arranged in valve.Just can change the outflow transverse section by rotating this baffle plate.But the closed line of this design proposal and lengthening integrates and does not always draw desirable effect.Especially may on valve element, can produce uneven load this moment.These shortcomings can be avoided the restriction of valve element raising height by using.

Description of drawings

Below in conjunction with the accompanying drawings the present invention is described in detail by preferred embodiment.Wherein be illustrated as:

Fig. 1: by a diagrammatic cross-sectional view of heating body valve;

Fig. 2: the plan view of valve seat;

Fig. 3: by a sectional view corresponding to III-III view among Fig. 2 of a valve element;

Fig. 4: according to sectional view of a kind of embodiment who has changed;

Fig. 5: plan view with valve seat of a valve element;

Fig. 6: another form of implementation of valve seat;

Fig. 7: the 4th kind of form of implementation of valve seat.

Embodiment

Heating body valve 1 shown in Figure 1 has a shell 2, wherein has been screwed into a valve assembly 3.Valve assembly 3 has a valve rod 4, at an end of valve rod a valve element 5 is housed.Valve element 5 is made of a kind of elastomeric material and is supported by a supporting disk 6.Valve element 5 is a flattened cylindrical shape basically.

Valve rod 4 is by operation pin 7 operations, and this pin 7 is by filler cover 8 guiding.Operation pin 7 acts on and overcomes the power of opening spring 9 on the valve rod 4.

Valve element 5 and valve seat 10 actings in conjunction on a valve base element 11.This valve base element 11 is represented with two kinds of different forms in Fig. 1.Valve base element 11 connects 12 by a kind of crimping and is connected with valve member 3 in the left side of Fig. 1, and wherein valve member 3 has an extension element 13, has arranged a series of hole 14 therein again, and these holes permission thermal liquids flow through to an outlet plenum 15 from valve.

Valve base element 11 inserts again on an arm 16.On an end of arm, an O shape circle 17 is housed, 18 li of inside grooves of this O shape coil apparatus valve base element 11 at it.

Though the form of implementation of the valve seat 11 shown in Fig. 1 right-hand part equally also is to fix by a crimping connection 12 of the extension element 13 of valve member 3.But volume connection herein 12 has been fixed again with arm 16 and be connected with the O shape circle 17 that seals simultaneously.Arm 16 is long in this form of implementation part omitted.

As shown in Figure 2, valve seat 10 has a kind of special shape.Valve seat 10 surrounds a hole 19, if valve element 5 has lifted from valve seat 10, thermal liquid just can enter 15 li of outlet plenums by hole 19 from arm 16 so.This hole has a maximum dimension D that physical dimension limited by heater valve 1.

On this maximum dimension D, arranged the section 20 of a closed line of valve seat 10, when heating body valve 1 is closed, the abutting on these line segments of valve element 5.Line segment 21 is set out by these line segments 20, and it extends to 19 li in hole inwards as radial radiation in this case current.Two such line segments 21 connect by line segment 22, and this line segment 22 is positioned on the much smaller diameter.

By line segment 20,21,22 closed lines that constitute have the variation of a kind of zigzag fashion or star.Thereby it is than being that the formed closed line of circumference of D is much longer by diameter just.

The inboard of closed line 20-22 defines hole 19.

The outside at closed line 20-22 is provided with cavity everywhere, and it designs 11 li of valve base elements.In Fig. 3, can see this cavity 23.

Valve base element 11 is a valve seat 10 in left side shown in Figure 3.The outside between two line segments 21 is provided with vacancy, and they have just formed cavity 23.These vacancies have a bottom 24, and it is in tilted layout, and the inclination angle is in 30 ° to 90 ° scopes.Just there is not bottom 3 under a kind of in the back situation strictly speaking.The bottom 24 carries out the transition to valve seat 10, just in the height minimum of each cavity 23 of radially inner side.But this height radially outward then becomes big.

The liquid that flows into outlet plenums 15 from arm 16 has just just been realized throttling by the synergy of valve element 5 and the closed line 20-22 of valve seat 10, that is to say that resistance all is to be stipulated by the spacing between valve base element 5 and the valve seat 10.Can flow out to outlet plenum 15 from valve base element 11 insusceptibly by line segment 20 from the liquid that arm 16 flows out.The liquid that line segment 21 by closed line flows out equally also can flow into cavity 23 in the clear.This in addition be suitable for radially further being in the position of the inside do not form and be worth the subsidiary throttle resistance of mentioning because have the cavity 23 of tilting bottom 24.Same at line segment 22 places additionally because the spacing between valve element 5 and valve base element 11 may be too little, thereby in fact do not carry out throttling.But if an additional throttling will be arranged here, this would be not dangerous so, because the length sum of the line segment 22 that is measured on the length of closed line 20-22 is less relatively.

Because the length of closed line 20-22 is relatively large, thereby just produced a corresponding bigger hole when valve element 5 when valve seat 10 lifts, liquid just can flow by this hole.The size in hole multiply by the length of closed line 20-22 corresponding to raising height (distance between valve element 5 and the valve seat 10).Obviously, also there is a bigger hole to be used to make thermal liquid to flow through to long closed line 20-22.

Be provided with a backstop 25 3 li of valve assemblys, by it can change in the rotation of 3 li of valve assemblys on its axial position.This is provided with a screw thread 26.Backstop 25 has constituted a restriction to the raising height of valve element 5.Thereby can give setting to peak rate of flow by valve.For making backstop 25 in 3 li rotations of valve assembly, be provided with a torque transfering element 27, it can rotate by means of a handle 28.

Adopt illustrated form of implementation can make the flow size reach 1000 liters/hour to 1500 liters/hour.Along with the lengthening greatly of closed line 20-22 length, to improve about 50% the linear closed line of the circle of valve through-current capability when having identical maximum dimension D.

Figure 4 and 5 have been represented a kind of valve base element 11 ' of another kind of form of implementation.Valve base element 11 ' at first has a circumferential groove 18 ' in its outside, and O shape circle of wherein can packing into when packing in the arm with convenient valve base element 11 ', guarantees sealing between valve base element 11 ' and arm.

In addition, valve base element 11 ' is flat on it forms valve seat 10.But the closed line of also being moved towards by a star owing to hole 19 is surrounded and has been formed a relatively long closed line 20-22 herein.For setting up necessary cavity 23 ' here, valve element 5 has a kind of shape corresponding to hole 19, and wherein valve element 5 wants more bigger certainly, so that can go up contact at valve seat 10 '.The element 5 ' of valve has a valve rod 4 ' that has anti-rotation device 29 in addition, thereby valve element 5 is fixed un-rotatably with respect to valve base element 11 '.

Fig. 6 and 7 has represented the closed line 30 or 31 of another kind of shape.Hole 19 is all surrounded by a relatively long closed line 30,31 in all cases, thereby makes such heating body valve have very big ability.

For a kind of such heating body valve 1, if want to realize as the identical through-current capacity of conventional valves, the raising height of valve element 5 is less relatively just passable.When identical raising height, can reach much bigger flow.Just can dwindle at given flow lower valve.

Because relatively large closed line 20-22 is arranged, thereby allow a bigger pressure by valve and fall.The thermostatic element that is generally used for controlling such valve has the power of a limit.Just do not allow a bigger pressure to fall with macropore 19, because thermostatic element can not produce necessary power, so that valve element 5 is closed.If closed line 20-22 has strengthened simultaneously but this scope 19 has been dwindled, that just can allow big pressure to fall.

Because it is closed line 20-22 is elongated, also just influential to the rate of outflow of the water that passes through valve.Thereby be positive to the influence of valve noise size.

The another one advantage is arranged in addition:, just when valve is enclosed on the wrong through-flow direction, valve element suddenly is controlled on the valve seat 10 because closed line 20-22 is longer relatively, thereby has reduced the danger that valve element 5 " is shut " fast.The danger of " water impact " is also just less.

As shown in Figure 3, valve seat 10 is as recessed, that is to say one section 21 and radially tilts inwards, thereby make from line segment 22 to line segment 20 an axial distance a is arranged.The size of this a is in 0.1mm to 0.2mm scope.Valve element 5 must be able to sufficiently be out of shape, so that also can follow this arch on a closed position.The figured recessed vault size of Fig. 3 is exaggerative.

Valve seat 10 adopts concave structure that following effect is arranged: when the power of closing on acting on valve element 5 weakens, because the deformability of valve element 5 blow-by occurs at the position, radially the inside of valve seat 10, thereby makes liquid flow out to 23 li of cavitys through line segment 22.Along with the further reduction of pressure just becomes increasing along the hole of line segment 21, thereby just there are more liquid can wake here.Lift and the line segment 20 of closed line also unclamps from valve seat 10 when valve element 5 at last, valve has just been opened fully.Also have only then by the spacing between valve element 5 and the closed line 20-22 and carry out the throttling adjusting.

Claims

1. heater valve, has a valve seat that surrounds a hole, this hole can be closed by a valve element, valve element abuts on the valve seat along a closed line when a closed position, it is characterized in that, closed line (20-22) has a line segment (21) that points to hole (19) direction inwards at least, and the outside also is to be provided with a cavity (23) when valve element (5) closed position along closed line (20-22).

2. by the described valve of claim 1, it is characterized in that be provided with many line segments (21), they are evenly distributed in around the circumference of hole (19).

3. by claim 1 or 2 described valves, it is characterized in that line segment leaves to be from valve element (5) with respect to a plane that is limited by the circumference line segment (20) of the hole that radially is positioned at outermost (19) and is in tilted layout.

4. by the described valve of claim 3, it is characterized in that the ultimate range (a) that line segment (22) leaves the plane is 0.1mm to 0.2mm.

5. by any described valve in the claim 1 to 4, it is characterized in that valve seat (10) designs on a valve base element (11), cavity (23) is then formed by a vacancy of valve base element (11) lining.

6. by the described valve of claim 5, it is characterized in that vacancy has an inclined bottom (24).

7. by the described valve of claim 6, it is characterized in that bottom (24) are by transitting to closed line (20-22) outward.

8. by claim 6 or 7 described valves, it is characterized in that the inclination angle of bottom (24) is between 30 ° to 90 °.

9. by any described valve in the claim 1 to 8, it is characterized in that cavity (23 ') designs in valve element (5 ') lining, and valve element (5 ') with respect to valve seat (10 ') rotation inhibiting support.

10. by any described valve in the claim 1 to 9, it is characterized in that closed line (20-22,30,31) is designed to star.

11., it is characterized in that valve element (5) has the raising height restricting means (25) that can set up by any described valve in the claim 1 to 10.