CN204025699U - Thermostat valve - Google Patents

Abstract

The utility model discloses a kind of thermostat valve.This thermostat valve comprises: valve body, and this valve body has the cavity allowing medium to flow to outlet from the import of thermostat valve; Flap, this flap is engaged in the cavity of valve body movably, is closed by the mobile of flap and opened thermostat valve; Valve rod assembly, the lower end of this valve rod assembly is fixedly connected with flap, is moved by the mobile flap that drives of valve rod assembly; Wherein thermostat valve also comprises counter balance pocket, this counter balance pocket next-door neighbour's flap side disposed thereon.

Description

Thermostat valve

Technical field

The utility model relates to field of heating ventilation air conditioning, especially a kind of thermostat valve.

Background technique

Heating ventilation air-conditioning system is for controlling the room temperature of commercial building.Such as hotel, hospital, office building, gymnasium etc. are generally all provided with heating ventilation air-conditioning system.Heating ventilation air-conditioning system by conveyance conduit by hot and cold medium transport to each room of building.For central air-conditioning system, in room furred ceiling, fan coil unit is installed.Fan coil unit working principle is blown into each room by cold water (hot water) coil pipe by after Air flow (heating).Controlled the open and close of pipeline by the thermostat valve of fan coil unit, and in conjunction with air output, just can control the constant of room temperature.For floor heating system, thermostat valve all can be housed to control the opening and closing of pipeline in the front end of water collecting and diversifying device, and control room temperature in conjunction with room temperature controller.

Central air-conditioner and floor heating system also exist the unbalanced phenomenon of waterpower due to many reasons, such as: the pressure medium of more distantly related of group of disembarking can organize the little of nearlyer room than disembarking with flow.Design of HVAC person, in order to meet the flow in the most severe room, can strengthen lift of pump, then the pressure causing other rooms more or less higher than demand pressure.Although be provided with thermostat valve, the maximum shut off differential pressure of existing thermostat valve is all very little, and when system pressure difference exceedes the maximum shut off differential pressure of Electric Actuated Stop Valves, thermostat valve will produce leakage, causes room temperature control not normal.If the mode that system increases equilibrium valve ensures that system pressure difference is within the scope of the shut off differential pressure of thermostat valve, so system cost will significantly improve again.Therefore a thermostat valve with high shut off differential pressure is needed to control flow system flow, to reach comfortable carefree room temperature control.

Model utility content

The purpose of this utility model is intended at least one aspect solving the above-mentioned problems in the prior art and defect.

Embodiment of the present utility model provides a thermostat valve, has temperature and controls, high turns off pressure reduction, large discharge, compact structure, the feature such as easy to use.

According to an aspect of the present utility model, provide a kind of thermostat valve, this thermostat valve comprises:

Valve body, this valve body has the cavity allowing medium to flow to outlet from the import of thermostat valve;

Flap, this flap is engaged in the cavity of valve body movably, realizes the closedown of thermostat valve and open by the movement of flap;

Valve rod assembly, the lower end of this valve rod assembly is fixedly connected with flap, is moved by the mobile flap that drives of this valve rod assembly;

Wherein this thermostat valve also comprises counter balance pocket, this counter balance pocket next-door neighbour's flap side disposed thereon.

In mode of execution of the present utility model: this thermostat valve inside is provided with counter balance pocket, when thermostat valve cuts out, medium enters into counter balance pocket by the equalizing orifice on flap, flap two-way pressure is made to reach relative or in a basic balance, the flap being now used as spool will no longer be subject to the active force of medium, easily can close under very high pressure reduction, no longer worry leakage problem.

The valve with high shutoff pressure and large discharge function provided by the utility model is the solution that heating ventilation air-conditioning system provides efficient and cost-effective.

Accompanying drawing explanation

These and/or other aspect of the present utility model and advantage will become obvious and easy understand below in conjunction with in accompanying drawing description of preferred embodiments, wherein:

Fig. 1 is the sectional plan view of the thermostat valve according to the first embodiment of the present utility model;

Fig. 2 a and 2b is the decomposition plan view of the section components shown in Fig. 1;

Fig. 3 is the sectional plan view of the thermostat valve according to the second embodiment of the present utility model; With

Fig. 4 is the sectional plan view of the thermostat valve according to the 3rd embodiment of the present utility model.

Embodiment

Below by embodiment, and 1-4 by reference to the accompanying drawings, the technical solution of the utility model is described in further detail.In the description, same or analogous drawing reference numeral indicates same or analogous parts.The explanation of following reference accompanying drawing to the utility model mode of execution is intended to make an explanation to present general inventive concept of the present utility model, and not should be understood to one restriction of the present utility model.

This thermostat valve (hereinafter referred to as valve) is designed with driver connection interface, can connect electronic or thermoelectricity driving head, for the switch of control valve.Driving head and indoor thermostat carry out signal and communication, and user arranges room temperature by temp controller.Temp controller is drive unit input feedback signal, thus the unlatching of control valve or closedown.When room temperature is higher than setting temperature, valve closing; When room temperature is lower than setting temperature, valve opening.Circulation realizes the adjustment of room temperature and so forth.This valve is mainly used in fan coil unit and central heating system.

Flow-rate adjustment ring can be equipped with in valve top, and this regulating ring is connected with internal restriction sleeve.The flow resistance of valve can be set by rotating adjustment ring, thus the room hydraulic unbalance phenomenon of balance diverse location and floor.Locking device is equipped with in order to ensure the stability that flow resistance sets, regulating ring.Flow is presetting complete after, presetting position can be locked, presetting position would not be changed because of the impact of current like this.In order to increase the accuracy of flow set, be designed with interface of pressure measurement respectively in the import and export of valve.From Bernoulli's waterpower principle, current are through certain resistance, and hydraulic pressure will decline, and will produce pressure difference between the measurement interface of upstream and downstream.The flow through valve just can be calculated by the resistance of this pressure difference and valve.The drag data of the different gear of valve is stored on a palm PC, and palm PC carries out data transmission by bluetooth and a pressure instrumentataion, on the measurement interface of pressure measurement contact pin insertion valve design, just can measure pressure difference.As long as commissioning staff's input product model and presetting gear, palm PC just can calculate flow automatically.

Concrete structure and the working principle of thermostat valve provided by the utility model is stressed below with reference to accompanying drawing.

First embodiment

See Fig. 1, show according to the utility model first embodiment be in closed condition time thermostat valve.This thermostat valve mainly comprises with lower component: valve body 11, flap 4 and valve rod assembly 2,3.Valve body 11 has import 23 and outlet 24.Flap 4 can coordinate with the sealing seat 251 of valve body 11 up or down, realizes the closedown of thermostat valve and open by the movement of flap 4.Valve rod assembly specifically comprises thimble 2 and valve rod 3, and the lower end of valve rod 3 is fixedly connected with flap 4 (being such as connected by flanging process), flap 4 can be driven to move by moving up and down of this valve rod 3 like this.Certainly, valve rod assembly is not limited to above-mentioned illustrated situation, and it can be substituted by alternate manner as known in the art.In addition, as illustrated in fig. 1, bonnet can also be set above valve rod assembly.

In order to realize that there is the high function turning off pressure and large discharge, in thermostat valve of the present utility model, be also provided with counter balance pocket 13.This counter balance pocket 13 is arranged on the top of flap 4 by next-door neighbour's flap 4.In this example, thermostat valve is also provided with throttle sleeve 5.The cavity that throttle sleeve 5 and flap 4 top are formed is counter balance pocket 13.Medium enters into counter balance pocket 13 from the passage (such as one or more equalizing orifice) 12 flap 4.As shown in Figure 1, now valve is in closed condition, due to medium from import 23 by cavity 25, enter into counter balance pocket 13 via equalizing orifice 12, therefore on the upper surface of flap 4, define downward active force, flap 4 also can form an active force upwards on the lower surface thereof under the pressure effect of import medium.Therefore, under this kind of state, the active force in flap 4 upper and lower surface is cancelled out each other, and decreases the medium active force on flap 4, flap 4 can be closed like a cork under the promotion of the such as final controlling element such as driving head or handwheel, add shut off differential pressure.

In FIG, driving head (sign) or handwheel are connected with valve gap 1 or are arranged on valve gap 1, make it possible to promote thimble 2 move downward, and then promotion valve rod 3 drives flap 4 to move downward until the sidewall of flap 4 contacts with the protruding parts of the both sides in valve cavity 25 or sealing seat 251 and 252, thus close the flowing of medium.When valve opened by needs, valve rod 3 can be popped up reset by the spring assembly be arranged between throttle sleeve 5 and valve rod 3, thus drive flap 4 and thimble 2 to move upward, to make flap 4 no longer contact with the protruding parts of the both sides in cavity 25 or sealing seat 251 and 252, and then medium can flow into valve export 24 from the space between flap 4 and protruding parts or sealing seat 251 and 252.In addition, the seal arrangement of such as seal ring can also be provided with between the parts of valve, such as, between flap 4 and throttle sleeve 5, also can be provided with noise preventing device between valve gap 1 and throttle sleeve 5.Specifically no longer describe in detail at this, those skilled in the art can carry out relevant setting as required, with the sealing between the parts realizing the inside of valve and steadiness.

In the present embodiment, the movement direction of thimble 2 and valve rod 3 and flap 4 is the above-below direction in the page of Fig. 1, and the longitudinal direction of valve body 11 is the left and right directions of the page in Fig. 1, namely medium enters along the left and right directions of the page in Fig. 1 from import 23 and flows out from outlet 24.That is, valve rod assembly is vertical with the longitudinal direction of valve body 11 or substantially vertical with the movement direction of flap 4.Certainly, this movement direction can be arranged to be inclined to several angle relative to the longitudinal direction of valve body 11, such as 45 or 60 degree etc., specifically see shown in Fig. 3 and 4.

The valve of the present embodiment is also provided with static equilibrium function.Particularly, the presetting of flow is realized by throttle sleeve 5.Throttle sleeve 5 is skirt structure, and shirt rim is designed with isenthalp opening, and matches with sealing seat 252, for the flow of preset valves.Throttle sleeve 5 is connected by the male cooperation of groove with adjusting connector 6 bottom be positioned at above throttle sleeve 5.See Fig. 2 a and 2b, adjusting connector 6 upper design has gear structure 16.Flow-rate adjustment ring 7 inner ring coordinated with adjusting connector 6 is designed be arranged side by side one enclose gearwheel 17 and and enclose two of small gear 18 and enclose gear structure.The gear 16 of adjusting connector 6 is connected with a joggle with the small gear 18 on Flow-rate adjustment ring 7, and Flow-rate adjustment ring 7 outer ring is labeled with presetting gear.

Usually, above throttle sleeve 5, be also provided with valve gap 1, and this valve gap 1 is provided with a circle gear 15, engages with the gearwheel 17 on Flow-rate adjustment ring 7.When needing to regulate presetting, raise Flow-rate adjustment ring 7, the gearwheel 17 on Flow-rate adjustment ring 7 is separated with the gear 15 on valve gap 1, just can pass through rotary current regulating ring 7 driven rotary adjusting connector 6 and throttle sleeve 5.When throttle sleeve 5 rotates, the skirt isenthalp opening of its lower end and valve outlet 24 coordinate makes opening area size change, thus changes the resistance of valve setpoint, reaches presetting object.Presetting complete after, Flow-rate adjustment ring 7 pressure makes it to engage with the gear 15 on valve gap 1 object reaching locking by the spring 8 being arranged on adjusting connector 6 top.

Preferably, the valve of the present embodiment also can be provided with the pressure-detecting device being separately positioned on import 23 and outlet 24 places for realizing pressure measuring function.This pressure-detecting device comprises downhole joint main body 10.Valve body 11 and downhole joint main body 10 form an inner chamber, and the seal ring 9 in inner chamber has a kerf 91.Seal ring 9 forms sealing pair with the inner chamber perisporium of downhole joint main body 10.When not inserting measurement contact pin (not shown), the otch 91 on seal ring 9 closes, the medium in closed valve 11.To measure contact pin and insert seal ring 9 by otch, now otch 91 expands, and allows measurement contact pin pass through and to hold measurement contact pin tightly, prevents medium from leaking, and pressure medium imports corresponding measuring equipment (not shown) by measuring contact pin.

Be appreciated that in this example, the sectional shape of flap 4 can be not only П shape as shown in Figure 1, but also can be roughly I-shaped, H-shaped etc. as shown in Figure 4 as shown in Figure 3.Certainly, the shape of flap 4 is not necessarily limited to above-mentioned shape, as long as can play the function of closing media flow, any applicable shape known in the art can adopt.In addition, the material of flap 4 can be metal also can be nonmetal, such as steel, iron, aluminium, copper, plastics etc.Sealing means between flap 4 and valve body 11 can be hard sealing also can be soft seal.Valve rod 3 and the Placement of flap 4 can be that flange is as shown in Figure 1 connected, can also be threaded, bolt connection, interference connection, buckle connects, pin connects, jump ring connects, riveted joint, bonding, wedge shape connection etc.The position of downhole joint main body 10 can be positioned at any direction and the position at the upper and lower, forward and backward of valve and two ends.Downhole joint main body 10 can be arranged to tilt (as shown in Figure 1) relative to the longitudinal direction of valve body 11, also can be arranged perpendicular to the longitudinal direction (as shown in figure 3 or 4) of valve body 11.

In the utility model, the opening and closing of valve can be controlled by drive unit, also can manually-operable realize.The connection of drive unit can be the Connecting format such as FERRULETYPE, thread type.

As mentioned above, in this example, valve can be selected as required whether to be provided with static equilibrium function (such as, measurement component 6,7,8,15,16,17,18 etc.) and pressure measuring function (such as, measurement component 9,10 etc.).

Second embodiment

Specifically see Fig. 3, show the sectional plan view of the thermostat valve according to the utility model second embodiment.As seen from the figure, the structure of the thermostat valve shown in Fig. 3 is roughly the same with the structure of the thermostat valve shown in Fig. 1, therefore the following main difference describing them.Clearly object for the sake of simplicity, identical parts are given identical reference mark.

The difference of the thermostat valve of the second embodiment and the thermostat valve of the first embodiment is mainly: the sectional shape of flap 4 is configured to roughly I-shaped, it is tilt that thimble 2, valve rod 3 and flap 4 are configured to relative to the longitudinal direction of valve body 11, and two downhole joint main bodys 10 are arranged perpendicular to the longitudinal direction of valve body 11.Flap 4 and valve rod 3 are for being fixedly connected with (be such as connected by flanging process or connected by nut).

As mentioned above, the movement direction of the flap 4 of the second embodiment is configured to be inclined to several angle relative to the longitudinal direction (i.e. the left and right directions of the page of Fig. 3) of valve body 11, makes valve have less flow resistance, thus increases the negotiability of valve.All the alternative form that Fig. 1 shows about the sectional shape of flap 4 and downhole joint main body 10 modes of emplacement.

In addition, in view of the static equilibrium function of the valve of the second embodiment is identical with the first embodiment with pressure measuring function, no longer describe at this.

3rd embodiment

See Fig. 4, it illustrates the sectional plan view of the thermostat valve according to the 3rd embodiment of the present utility model.Composition graphs 3 is known, and the 3rd embodiment of the present utility model is roughly the same with principle with the basic structure of the thermostat valve of the second embodiment, therefore the following main difference describing them.Clearly object for the sake of simplicity, identical parts are given identical reference mark.

The difference of the thermostat valve of the 3rd embodiment and the thermostat valve of the second embodiment is mainly: the sectional shape of this flap 4 is H-shaped and the bottom of flap 4 is provided with cone structure 41; Throttle sleeve 5 is not set but promotes flap 4 by relevant parts and move that to make cone structure 41 and the aperture of valve body 11 changes to realize flow default.

Due in this example, throttle sleeve 5 is not set, therefore correspondingly, the cavity that counter balance pocket 13 is formed with the top of flap 4 for valve gap 1.Valve gap (sign) to be positioned at above flap 4 and to coordinate with the top of valve body 11.The lower end of valve rod 3 can be threaded with the central part of flap 4, and the movement of such valve rod 3 can drive flap 4 to move, thus realizes the opening and closing of valve.

Although the 3rd embodiment of the present utility model is not provided with throttle sleeve 5, the static equilibrium function of valve still can be realized.Below concrete composition graphs 4 is illustrated how static equilibrium function realizes.

In the present embodiment, this thermostat valve comprises interconnective support 22, Flow-rate adjustment ring 7, connecting head 19, connecting rod 20 and calibration bar 21 successively.The lower end of this support 22 is connected with the top of valve gap 1 and upper end is connected with the lower end of connecting head 19, the upper end of this connecting head 19 is connected with connecting rod 20, this connecting rod 20 upper end is connected with the lower end of calibration bar 21, the outer installment of this support 22 and connecting head 19 has tooth-shape structure, and the inside of this Flow-rate adjustment ring 7 is provided with tooth-shape structure.Flow-rate adjustment ring 7 and be provided with the spring 8 supporting and reset between support 22 and connecting head 19.

As mentioned above, in this embodiment, valve design has a flow regulating ring 7, and Flow-rate adjustment ring 7 indoor design has tooth-shape structure, and support 22 and connecting head 19 outside are also designed with tooth-shape structure.One is designed with for supporting the spring 8 of reset between Flow-rate adjustment ring 7 and support 22 and connecting head 19.In the locked state, Flow-rate adjustment ring 7 is supported by spring 8, makes it be meshed by tooth-shape structure with support 22 and connecting head 19.It is screw gear between connecting head 19 and connecting rod 20, jump ring is had to be connected between connecting head 19 with support 22, jump ring makes can only mutually rotate and can not depart between connecting head 19 and support 22, when needs carry out preconditioning, by drop-down for Flow-rate adjustment ring 7, it is made to depart from support 22 and connecting head 19.So just can rotary connecting joint 19, support 22 lower end is hexagonal hole, coordinate with six side's parts of connecting rod 20 lower end, the rotation of restriction connecting rod 20, therefore drive connecting rod 20, indicating arm 21, valve rod 3 and flap 4 entirety to do by screw gear and descend straight line motion haply.Because flap 4 bottom is cone structure, in movement process, the aperture of valve changes thereupon, thus changes circulation area, reaches presetting object.Presetting complete after, unclamp Flow-rate adjustment ring 7, Flow-rate adjustment ring 7 is sent back to original position by spring 8, connecting head 19 and support 22 is locked.

What note that due to the pressure-detecting device in the present embodiment and the second embodiment is identical, therefore no longer describes at this.

These are only embodiments more of the present utility model, those skilled in the art will appreciate that, when not deviating from principle and the spirit of this present general inventive concept, can make a change these embodiments, scope of the present utility model is with claim and their equivalents.

Claims (18)

1. a thermostat valve, is characterized in that, described thermostat valve comprises:

Valve body, described valve body has the cavity allowing medium to flow to outlet from the import of thermostat valve;

Flap, described flap is engaged in the cavity of valve body movably, is closed by the mobile of flap and opened thermostat valve;

Valve rod assembly, the lower end of described valve rod assembly is fixedly connected with described flap, is moved by the mobile flap that drives of described valve rod assembly;

Counter balance pocket, described counter balance pocket next-door neighbour's flap side disposed thereon.

2. thermostat valve according to claim 1, is characterized in that,

Described flap is provided with and makes described medium flow into lane device counter balance pocket from described import, and described flap is engaged on the sealing seat of described cavity.

3. thermostat valve according to claim 2, is characterized in that,

Described lane device is equalizing orifice.

4. thermostat valve according to claim 3, is characterized in that,

The sectional shape of described flap is shape shape or I-shaped shape.

5. thermostat valve according to claim 4, is characterized in that,

Described valve rod assembly is with the movement direction of flap and the longitudinal direction of valve body is vertical or tilt at angle.

6. thermostat valve according to claim 5, is characterized in that,

Described thermostat valve also comprises the pressure-detecting device being separately positioned on inlet and outlet.

7. thermostat valve according to claim 6, is characterized in that,

Described pressure-detecting device comprises downhole joint main body, and described downhole joint main body and valve body form an inner chamber, is provided with the seal ring with a kerf in described inner chamber, and described seal ring and described inner chamber perisporium form sealing pair.

8. the thermostat valve according to any one of claim 1-7, is characterized in that,

Described thermostat valve also comprises the throttle sleeve be engaged in the cavity of valve body, the cavity of described counter balance pocket for being formed by throttle sleeve and flap top.

9. thermostat valve according to claim 8, is characterized in that,

Described throttle sleeve is skirt structure, and the shirt rim of described skirt structure is provided with the isenthalp opening of the flow for default thermostat valve.

10. thermostat valve according to claim 8, is characterized in that,

Described thermostat valve also comprises the adjusting connector be positioned at above throttle sleeve, and the described projection of adjusting connector bottom is connected with the groove fit on the top of throttle sleeve, and described adjusting connector top is provided with gear structure.

11. thermostat valves according to claim 10, is characterized in that,

Described thermostat valve also comprises the Flow-rate adjustment ring coordinated with described adjusting connector, described Flow-rate adjustment ring inner ring is provided with a circle gearwheel and a circle small gear of setting side by side up and down, on the gear structure of described adjusting connector and Flow-rate adjustment ring one encloses small gear is connected with a joggle, and the outer ring of described Flow-rate adjustment ring is labeled with presetting gear.

12. thermostat valves according to claim 11, is characterized in that,

Described thermostat valve also comprises the valve gap be arranged on valve body, described valve gap be provided with engage with the gearwheel on Flow-rate adjustment ring one enclose gear.

13. thermostat valves according to claim 12, is characterized in that,

Described adjusting connector top is provided with spring, raise Flow-rate adjustment ring make on Flow-rate adjustment ring one circle gearwheel be separated with the gear on valve gap, and by rotary current regulating ring driven rotary adjusting connector and throttle sleeve complete described flow presetting after, described spring by Flow-rate adjustment ring pressure make it recover again engage with the gear on valve gap.

14. thermostat valves according to any one of claim 1-7, is characterized in that,

The sectional shape of described flap is H-shaped and the bottom of flap is provided with cone structure.

15. thermostat valves according to claim 14, is characterized in that,

Described thermostat valve also comprises the valve gap being positioned at and coordinating above flap and with the top of valve body, the cavity of described counter balance pocket for being formed by the top of valve gap and flap.

16. thermostat valves according to claim 15, is characterized in that,

Described thermostat valve also comprises interconnective support, Flow-rate adjustment ring, connecting head and calibration bar successively, the lower end of described support is connected with the top of valve gap and upper end is connected with the lower end of connecting head, the upper end of described connecting head is connected with the lower end of calibration bar, the outer installment of described support and connecting head has tooth-shape structure, and the inside of described Flow-rate adjustment ring is provided with tooth-shape structure.

17. thermostat valves according to claim 16, is characterized in that,

Described Flow-rate adjustment ring and be provided with the spring supporting and reset between support and connecting head, in the locked state, Flow-rate adjustment ring makes it be meshed by tooth-shape structure with support and connecting head by described spring supporting; When needs preconditioning, by drop-down for Flow-rate adjustment ring, itself and support and connecting head are departed from, Flow-rate adjustment ring is connected by back-up ring with support, with connecting rod for being threaded, pedestal lower end is a hexagonal hole, and coordinates with six side's parts of connecting rod lower end to prevent connecting rod from rotating; Rotary current regulating ring, is converted to the straight line motion up and down of connecting rod by rotary motion by the screw thread on regulating ring; Connecting rod, indicating arm, valve rod and flap are whole assembly, do descend straight line motion on the whole with connecting rod; And after preconditioning completes, unclamp Flow-rate adjustment ring, Flow-rate adjustment ring is returned to its initial position by described spring.

18. thermostat valves according to claim 1, is characterized in that,

Described valve rod assembly comprises be mutually permanently connected thimble together and valve rod, and the lower end of described valve rod is fixedly connected with described flap.