CN102537423B - A kind of counterflow-preventing constant temperature valve core using shape memory alloy spring - Google Patents

Abstract

The present invention relates to a kind of counterflow-preventing constant temperature valve core using shape memory alloy spring, the counterflow-preventing constant temperature valve core of described use shape memory alloy spring (hereinafter referred to as SMA) includes the valve body being arranged between cooling water inlet and outlet by hot water inlet and is arranged on the temperature adjustment component of operable cooperation of body cavity, SMA and left regulation sliding sleeve, right regulation sliding sleeve and bias spring, in SMA mixing water passage between hot water inlet and outlet, left, right regulation sliding sleeve abuts against cooperation mutually, bias spring and SMA are by a left side, to balance in the middle of the clamping of right regulation sliding sleeve, cold, the adjoining edge of hot water inlet is i.e. positioned at a left side, between the two end face in opposite directions of right regulation sliding sleeve, left and right is each forms an inlet valve, left, right regulation sliding sleeve provides cold, hot water inlet is to the passage of mixed water exports.Technique scheme, when cold water pressure is more than heat hydraulic pressure, during the outside jet flow of cold water little to the resistance of hot water inlet, thus preferably resolve constant temperature valve core and use the problem producing adverse current in cold water pressure is higher than the solar water heater of heat hydraulic pressure or electric heater.

Description

A kind of counterflow-preventing constant temperature valve core using shape memory alloy spring

Present disclosure relates to a kind of counterflow-preventing constant temperature valve core using shape memory alloy spring.This thermostatic valve Core is applicable to the mixing constant temperature of hot and cold water, is particularly suited for the cold water pressure of supply water situation higher than hot water pressure of supply water, such as, exists Solar water heater system uses as cold hot water valve.

Background technology cold-hot water mixing constant temperature valve of the prior art core is used mostly cured texture thermometer bulb as temperature-sensitive unit Part, owing to the water inlet of this spool and water outlet direction are usually hot water inlet in centre, cooling water inlet and outlet divide on both sides, but Owing to the restriction of its temperature-sensitive pack arrangement used is allowed to when cold water flows to hot water water inlet position disturb hot water and rush Hit, especially then can cause string watery vomiting stream as cold water pressure higher than heat hydraulic pressure, including a kind of flow switch be located at cold and hot enter Constant temperature valve core at the mouth of a river, although will not go here and there water during closedown, but when opening, also due to cold water pressure is high and cause string water, Currently the majority constant temperature valve core respectively installs a check-valves at hot and cold water inlet additional and (i.e. prevents high pressure water string from entering low-pressure water pipe Road), but when Open valve, although the unlikely string water that causes, but not water outlet can be caused or only go out cold water and cannot use.

On existing domestic and international market another constant temperature valve core employ shape memory alloy spring (hereinafter referred to as SMA, its It is flexible that length varies with temperature by a relatively large margin) as temperature-sensitive element, reach the constant temperature purpose of hot and cold water mixing water outlet, though So good due to its performance, the life-span is long, the most gradually promotes, but due to the performance of this element and shape and structure and above-mentioned cured medium Temperature-sensitive is surrounded by larger difference, thus its hot and cold water of this product water inlet direction is also different from cured texture thermometer bulb, i.e. its cooling water inlet Being located at centre, hot water inlet and outlet and divide on both sides, it is applicable to hot and cold water and all presses or heat hydraulic pressure is more than cold water pressure In the case of, and the most applicable more than the solar water heater of the non-bearing type of heat hydraulic pressure for general cold water pressure, it is more easy to draw Playing adverse current string water, its structural representation is as shown in Figure 1.

Summary of the invention the present invention be directed to the entering of being made of problem used in the presence of the constant temperature valve core prior art of SMA One step is improved.As it has been described above, constant temperature valve core of the prior art remains in some defect, it is impossible under the conditions of meeting some of people Normal need.In order to make constant temperature valve core can not only use when hot and cold water pressure is suitable, and at cold water pressure more than heat In the case of water pressure also can normally homoiothermic and do not occur adverse current to go here and there water phenomenon, the constant temperature valve core using SMA is made by the present invention Technical improvement.

First technical scheme of the present invention is:

Use the constant temperature valve core of SMA, including being provided with the valve body of cooling water inlet, hot water inlet and outlet and being arranged on The temperature adjustment component of operable cooperation of body cavity, SMA and hot and cold water water inlet control assembly, it is characterised in that: its valve body week Hot water inlet on wall is provided between cooling water inlet and outlet, SMA mixing between hot water inlet and outlet In aquaporin, hot and cold water water inlet controls assembly and includes left regulation sliding sleeve, right regulation sliding sleeve and bias spring, left and right regulation sliding sleeve Being positioned at body cavity, be slidably matched therewith, left and right regulation sliding sleeve abuts against cooperation, SMA and bias spring mutually by left and right regulation In the middle of sliding sleeve clamping, two ends abut with the homoiothermic screw rod in valve body bottom surface and temperature adjustment component respectively to balance, left regulation sliding sleeve Right side is close with hot water inlet right edge on valve body, with a left regulation sliding sleeve end face in opposite directions and valve body on right regulation sliding sleeve Upper cooling water inlet left side is close, and the adjoining edge of hot water or cold water's import is positioned at the two end face in opposite directions of left and right regulation sliding sleeve Between, left and right respectively forms an inlet valve, and left and right regulation sliding sleeve provides hot water or cold water's import to the passage of mixed water exports.

In this programme, owing to left and right regulation sliding sleeve is clamped therebetween by bias spring and SMA, elastic force balances in opposite directions and extremely, enters And at hot and cold water inlet one inlet valve of each formation, compressed or relax bias spring by operation temperature adjustment component, Required leaving water temperature is set, when inflow temperature or pressure change, from temperature-sensitive element SMA withs bias spring drive a left side, Move axially about right regulation sliding sleeve, and then adjust the hot and cold water water inlet ratio of the two inlet valve, reach water termostat Purpose.

Second technical scheme of the present invention is:

Use the constant temperature valve core of SMA, including being provided with the valve body of cooling water inlet, hot water inlet and outlet and being arranged on The temperature adjustment component of operable cooperation of body cavity, SMA and hot and cold water water inlet control assembly, it is characterised in that: its valve body week Hot water inlet on wall is provided between cooling water inlet and outlet, SMA mixing between hot water inlet and outlet In aquaporin, hot and cold water water inlet controls assembly and includes regulating sliding sleeve, slide cartridge, bias spring, and it is cold that regulation sliding sleeve is positioned at body cavity Between hot water inlet, being slidably matched, two end face is close with the two of hot water or cold water's import edges in opposite directions respectively, is respectively formed One inlet valve, slide cartridge then pierces into regulation sliding sleeve endoporus, abuts cooperation with its endoporus right flank, and slide cartridge left part puts in valve body Chamber, is slidably matched, and its perisporium and hot water inlet corresponding position are radially provided with multiple inlet opening, have apopore, SMA one end and cunning at the bottom of cylinder Cylinder bottom surface abuts, and the other end abuts with push pipe, and push pipe abuts with homoiothermic screw rod, and push pipe perisporium also radially is provided with multiple and hot and cold The limbers that water inlet is the most corresponding, bias spring one end abuts with regulation sliding sleeve, and the other end then abuts with valve body, and SMA passes through Slide cartridge and bias spring are by middle to balance for regulation sliding sleeve clamping.

Predetermined load when this programme is up to balanced by operation temperature adjustment component appropriate change SMA and bias spring, with Arrange temperature required, when inflow temperature or pressure change, by the reaction of SMA quick-expansion and bias spring synergism, drive The left and right of dynamic regulation sliding sleeve moves axially, and regulates cold and hot water inlet ratio, to reach the purpose of water termostat.

Due to technique scheme and the circular hollow shape of SMA of the present invention, when cold water pressure is more than heat hydraulic pressure Time, little to the resistance of hot water inlet during the outside jet flow of cold water, but also tangible paired hot water produces the spatial loop of negative pressure Border condition, can preferably solve constant temperature valve core and use solar water heater or the non-bearing type being higher than heat hydraulic pressure at cold water pressure The problem producing adverse current in electric heater.

Accompanying drawing explanation

Fig. 1 prior art uses the thermostatic valve core structure schematic diagram of SMA,

Fig. 2 present invention uses the structural representation of the constant temperature valve core first embodiment of SMA

Fig. 3 present invention uses the structural representation of constant temperature valve core second embodiment of SMA

Fig. 4 present invention uses the structural representation of constant temperature valve core the 3rd embodiment of SMA

Fig. 5 present invention uses the tep reel push rod schematic perspective view substituting use in constant temperature valve core the 4th embodiment of SMA

Fig. 6 present invention uses the structural representation of constant temperature valve core the 5th embodiment of SMA

Fig. 7 present invention uses the structural representation of the constant temperature valve core sixth embodiment of SMA

Fig. 8 present invention uses the structural representation of constant temperature valve core the 7th embodiment of SMA

The left regulation sliding sleeve 4. of 1.SMA 2. bias spring 3. right regulation sliding sleeve 5. homoiothermic screw rod 6. homoiothermic valve head 7. is left Valve body 8. right valve barrel 9. base 10.O type circle 11.O type circle 12.O type circle 13. back-up ring 14. regulates sliding sleeve 15. slide cartridge 16. push pipe 17. tep reel push rod 18. mandrel 19. brackets 20. are fixed nut 21. and are regulated the long cunning of slide cartridge 22. long slide cartridge 23. Cover 24. push pipe support claw 25. tep reel short axle 26. jet bar

Six specific embodiments of the present invention are elaborated by detailed description of the invention below in conjunction with accompanying drawing.

Prior art uses the constant temperature valve core of SMA, as it is shown in figure 1, cooling water inlet 41 is at hot water inlet 31 in this spool And between outlet 91, SMA and bias spring will in the middle of regulation sliding sleeve and slide cartridge clamping, two ends respectively with valve body bottom surface and tune Homoiothermic screw rod in temperature assembly abuts to balance, and during use, hot water flows to cooling water inlet to be first passed through during outlet, and be hampered power is relatively Greatly, if cold water pressure is higher than heat hydraulic pressure, hot water fight back can be caused adverse current by cold water, and cold water is then gone here and there into boiler, even if Adding loaded check valve at two water inlets, though then can avoid adverse current, but can cause not water outlet or only go out cold water, valve can not use, Facts have proved the most so.

The first embodiment of the present invention, as in figure 2 it is shown, use SMA1 is as the constant temperature valve core of temperature-sensitive element, including arranging There are cooling water inlet 41, hot water inlet 31 and the valve body of outlet 91 and are arranged on the homoiothermic group of operable cooperation of body cavity Part, SMA1 and hot and cold water water inlet control assembly, and the hot water inlet 31 on its valve body perisporium is provided in cooling water inlet 41 and water outlet Between mouth 91, in SMA1 mixing water passage between hot water inlet 31 and outlet 91, valve body includes right valve barrel 8, left valve Body 7 and base 9, it is internally formed the host cavity of above-mentioned parts, and described temperature adjustment component includes homoiothermic valve head 6, homoiothermic screw rod 5, O type Circle 12 and back-up ring 13, homoiothermic valve head 6 stretches out right valve barrel 8, homoiothermic valve head 6 and homoiothermic screw rod 5 with threaded cooperation, rotation homoiothermic Valve head 6 makes homoiothermic screw rod 5 left and right in the case of anti-torsion move axially, to set leaving water temperature.

The water inlet of described hot and cold water controls assembly and includes left regulation sliding sleeve 3, right regulation sliding sleeve 4, bias spring 2, sealing ring 10 With sealing ring 11, left and right regulation sliding sleeve 3,4 is positioned at body cavity, is slidably matched therewith, and its excircle is embedded with sealing ring 10 He 11, left and right regulation sliding sleeve 3,4 abuts against cooperation, SMA1 and bias spring 2 mutually and is clamped by left and right regulation sliding sleeve 3,4 middle, and two End abuts with the homoiothermic screw rod 5 in the base 9 of valve body bottom surface and temperature adjustment component respectively to balancing, the right side of left regulation sliding sleeve 3 Close with hot water inlet on valve body 31 right edge, right regulation sliding sleeve 4 and left regulation sliding sleeve 3 end face in opposite directions is cold with on valve body Water inlet 41 left side is close, adjoining by hot water or cold water's import 41,31 of the two end face in opposite directions of left and right regulation sliding sleeve 3,4 Between edge is sandwiched in, left and right respectively forms an inlet valve, and the multiple inlet openings being radially arranged on right regulation sliding sleeve 4 perisporium, Corresponding with hot water inlet 31 and cooling water inlet 41 respectively.

Owing to left and right regulation sliding sleeve 3,4 is clamped therebetween by bias spring 2 and SMA1, elastic force balances in opposite directions and extremely, by behaviour Compress as temperature adjustment component or relax bias spring 2, to arrange required leaving water temperature, when inflow temperature or pressure change Time, with temperature-sensitive element SMA1, bias spring 2 drives left and right regulation sliding sleeve 3, about 4 to move axially, and then adjustment two is entered Penstock opening-closing size, i.e. regulation hot and cold water water inlet ratio, reaches the purpose of water termostat.

The second embodiment of the present invention, as it is shown on figure 3, use SMA1 constant temperature valve core, including be provided with cooling water inlet 41, Hot water inlet 31 and the valve body of outlet 91 and be arranged on the temperature adjustment component of operable cooperation of body cavity, SMA1 and cold and hot Water water inlet controls assembly, and the hot water inlet 31 on its valve body perisporium is provided between cooling water inlet 41 and outlet 91, SMA1 In mixing water passage between hot water inlet 31 and outlet 91, valve body includes right valve barrel 8 and left valve barrel 7, its internal shape Becoming the host cavity of above-mentioned parts, described temperature adjustment component to include right valve barrel 8, homoiothermic screw rod 5 and O 12, homoiothermic screw rod 5 stretches out the right side Valve body 8, right valve barrel 8 and homoiothermic screw rod 5, with threaded cooperation, rotate homoiothermic screw rod 5 and can make to move axially around, with one Make temperature adjustment in the range of Ding to be used.

The water inlet of described hot and cold water controls assembly and includes regulating sliding sleeve 14, slide cartridge 15, bias spring 2, push pipe 16, O 10 With O 11, regulation sliding sleeve 14 is arranged between hot water or cold water's import 41,31 of body cavity, is slidably matched, two end face Close with two edges in opposite directions of hot water or cold water's import 41,31 respectively, one inlet valve of each formation, periphery wall is embedded with O 10, slide cartridge 15 is through regulation sliding sleeve 14 endoporus, and abuts cooperation with regulation sliding sleeve 14 endoporus right flank, and slide cartridge 15 left part puts in valve Intracoelomic cavity, and be slidably matched therewith, its perisporium and hot water inlet 31 corresponding position are radially provided with multiple inlet opening, have water outlet at the bottom of cylinder Hole, places SMA1 in slide cartridge 15, the degree of depth of slide cartridge 15 be enough to make SMA1 when changing from the length of low temperature to high temperature the most all the time from In the passage of mixing water, SMA1 one end abuts with slide cartridge 15 bottom surface, and the other end abuts with push pipe 16, push pipe 16 and homoiothermic screw rod 5 abut, and push pipe 16 perisporium also radially is provided with multiple limbers the most corresponding with hot water or cold water's import 41,31, bias spring 2 one Holding and abut with regulation sliding sleeve 14, the other end then abuts with valve body, and regulation sliding sleeve is clamped with bias spring 2 by SMA1 by slide cartridge 15 To balance.

When leaving water temperature or pressure change, SMA1 perception and cause telescopic variation, then with bias spring 2 co-operating, Slide cartridge 14 and regulation sliding sleeve 15 is driven to move axially about simultaneously, regulation hot and cold water water inlet ratio, thus keep leaving water temperature permanent Fixed.

The third embodiment of the present invention, will replace to tep reel push rod 17 as shown in Figure 4 by the push pipe 16 in Fig. 2, its Two ends abut with SMA1 and homoiothermic screw rod 5 respectively, the dish of this tep reel push rod 17 has multiple hole, makes current direction hybrid channel.

The 5th embodiment following in the present invention uses the position of push pipe 16 also can replace with tep reel push rod 17.

The 4th embodiment in the present invention, as it is shown in figure 5, on the basis of the second embodiment, described temperature adjustment component includes adjusting Temperature valve head 6, homoiothermic screw rod 5, O 12 and back-up ring 13, the water inlet of described hot and cold water controls assembly except including regulating sliding sleeve 14, sliding Outside cylinder 15 and bias spring 2, also include that mandrel 18, bracket 19 and fixing nut 20, one end of SMA1 support with slide cartridge 15 bottom surface Connecing, the other end is abutted with valve body by push pipe 16, and one end of bias spring 2 abuts with regulation sliding sleeve 14, the other end and bracket 19 And between valve body be slidably matched end surface abut, bracket 19 then by fixed thereto connect through SMA1 and push pipe The mandrel 18 of 16 is connected fixing with homoiothermic screw rod 5, and SMA1 will regulate sliding sleeve 14 clipping equilibrium by slide cartridge 15 with bias spring 2, There is limbers on bracket 19, mixing water passage is connected with valve body outlet 91.

In this example, regulation sliding sleeve 14 and slide cartridge 15 can be made of one, in the 5th embodiment described as follows (as shown in Figure 6) with Instead, so regulation slide cartridge 21 directly coordinates regulation slide cartridge 21 with valve body slides, and bracket 19 can be reduced to a plate-like, separately Outward, regulation sliding sleeve 14 and slide cartridge 15 can be made with threaded one, it is possible to reach the purpose of simplification.

The 5th embodiment in the present invention, as shown in Figure 6, former hot and cold water inlet changes into the rear end of valve body, mixed water exports Being arranged on the sidewall of valve body front end, the valve body bottom surface near cooling water inlet is to close, and the water inlet of described hot and cold water controls in assembly Regulation slide cartridge 21 be that regulation sliding sleeve and slide cartridge are made of one, SMA1 one end with regulation slide cartridge 21 bottom surface abut, the other end is then Being abutted with valve body bottom surface by push pipe 16, bias spring 2 one end abuts with regulation slide cartridge 21, and the other end then supports with homoiothermic screw rod 5 Connecing, SMA1 will regulation slide cartridge 21 clipping equilibrium with bias spring 2.

Sixth embodiment in the present invention, as it is shown in fig. 7, described hot and cold water water inlet control assembly include regulate sliding sleeve 14, Long slide cartridge 22, long slide cartridge lid 23, push pipe 16, push pipe support claw 24 and the short axle of tep reel 25, regulation sliding sleeve 14 and long slide cartridge 22 are with screw thread Connecting fixing, long slide cartridge 22 right-hand member has long slide cartridge lid fixed thereto, by SMA1, push pipe 16, the short axle of tep reel 25 and bias spring 2 certainly Left-to-right is closed wherein, and SMA1 one end abuts with long slide cartridge 22 bottom surface, and the other end abuts with push pipe 16, and push pipe 16 is further through setting Put push pipe 16 right part and uniform several push pipe support claws 24 of being perpendicular to its axial line abut with valve body, push pipe support claw 24 Stretch out by the most corresponding uniform long rabbet of long slide cartridge 22 right part perisporium and insert and position among notch corresponding on valve body, Push pipe 16 and long slide cartridge 22 are radially designed with the limbers corresponding to water inlet 41,31 hot and cold on valve body at its perisporium, can anti-turn round The short axle of tep reel 25 turned stretches out long slide cartridge lid 23, is slidably matched, and fixes it with homoiothermic screw rod 5, and the short axle of tep reel 25 can be with homoiothermic Screw rod 5 and left and right moves axially, the dish of bias spring 2 one end axle short with tep reel 25 abuts, and the other end abuts with long slide cartridge lid 23, The elastic force back action of SMA1 and bias spring 2 up to balances together with regulation sliding sleeve in long slide cartridge two ends.

Long slide cartridge lid 23 is also placed in the other end of long slide cartridge 22, but now push pipe support claw 24 must be one by one from long slide cartridge 22 Right-hand member notch inserts and fixes it with push pipe 16

In the present embodiment, owing to SMA1 and bias spring 2 are with being encapsulated in long slide cartridge 22, force direction is the most on the contrary to flat Weighing apparatus, when adjusting homoiothermic valve head 6, homoiothermic bolt 5 axle short with tep reel 25 moves simultaneously, by bias spring 2 and long slide cartridge 22 by power Pass to SMA1, under the synergism of SMA1 and bias spring 2, make the regulation sliding sleeve 14 together with fixing with long slide cartridge 22 be in Certain position and preset temperature；When temperature or pressure change, the force variation of temperature-sensitive element SMA1 is collaborative with bias spring 2 Effect causes long slide cartridge 22 and is subjected to displacement to regulation sliding sleeve 14 and keeps temperature constant.

The 7th embodiment in the present invention, as shown in Figure 8, in above-mentioned second embodiment, the water inlet of described hot and cold water controls Arranging a jet bar 26 in the hot and cold water intake tunnel of assembly, its right-hand member is fixed on homoiothermic screw rod 5 or push pipe 16, and left end stretches into Near hot water mouth on the left of cold water inlet.So, when the outside jet flow of cold water, a negative pressure can be formed about at hot water inlet District, preferably avoids adverse current to go here and there water.

The counterflow-preventing constant temperature valve core of the use SMA of the present invention may be used for various hot and cold water hybrid system, except can be used for Outside pressure-bearing water heater, be more suitable for cold water intake pressure more than the system of hot water intake pressure, such as solar water heater and Non-bearing type electric heater etc..

Claims (11)

1. use a counterflow-preventing constant temperature valve core of SMA, including be provided with the valve body of cooling water inlet, hot water inlet and outlet with And it is arranged on the temperature adjustment component of operable cooperation of body cavity, SMA and hot and cold water water inlet control assembly, it is characterised in that: Hot water inlet on its valve body perisporium is provided between cooling water inlet and outlet, SMA be positioned at hot water inlet and outlet it Between mixing water passage in, hot and cold water water inlet control assembly include left regulation sliding sleeve, right regulation sliding sleeve and bias spring, left and right Regulation sliding sleeve is positioned at body cavity, is slidably matched therewith, and left and right regulation sliding sleeve abuts against cooperation, SMA and bias spring mutually will In the middle of the clamping of left and right regulation sliding sleeve, two ends abut with the homoiothermic screw rod in valve body bottom surface and temperature adjustment component respectively to balance, left tune The right side of joint sliding sleeve is close with hot water inlet right edge on valve body, with a left regulation sliding sleeve end in opposite directions on right regulation sliding sleeve Face is close with cooling water inlet left side on valve body, and the adjoining edge of hot water or cold water's import is positioned at the two of left and right regulation sliding sleeve In opposite directions between end face, left and right respectively forms an inlet valve, and left and right regulation sliding sleeve provides hot water or cold water's import to mixed water exports Passage；

Its abutting end face of described left and right regulation sliding sleeve is the most all, its perisporium is radially arranged multiple inlet opening, enters with hot water respectively Mouth is corresponding with cooling water inlet.

A kind of counterflow-preventing constant temperature valve core using SMA the most as claimed in claim 1, it is characterised in that: described temperature adjustment component bag Including homoiothermic valve head, homoiothermic screw rod, sealing ring and back-up ring, homoiothermic valve head is stretched out by valve body termination, homoiothermic screw rod and homoiothermic valve head with Threaded engagement, and moved axially by about the driving of homoiothermic valve head.

A kind of counterflow-preventing constant temperature valve core using SMA the most as claimed in claim 1, it is characterised in that: described valve body includes a left side Valve body, right valve barrel and base, described outlet is arranged on base.

4. use a counterflow-preventing constant temperature valve core of SMA, including be provided with the valve body of cooling water inlet, hot water inlet and outlet with And it is arranged on the temperature adjustment component of operable cooperation of body cavity, SMA and hot and cold water water inlet control assembly, it is characterised in that: Hot water inlet on its valve body perisporium is provided between cooling water inlet and outlet, SMA be positioned at hot water inlet and outlet it Between mixing water passage in, hot and cold water water inlet controls assembly and includes regulating sliding sleeve, slide cartridge, bias spring and push pipe, regulates sliding sleeve Between body cavity hot and cold water inlet, be slidably matched, two end face respectively with two limits in opposite directions of hot water or cold water's import Edge is close, one inlet valve of each formation, and slide cartridge then pierces into regulation sliding sleeve endoporus, abuts cooperation, slide cartridge with its endoporus right flank Left part puts in body cavity, is slidably matched therewith, and its perisporium and hot water inlet corresponding position are radially provided with multiple inlet opening, have at the bottom of cylinder Apopore, SMA one end abuts with slide cartridge bottom surface, and the other end abuts with push pipe, and push pipe abuts with homoiothermic screw rod, and push pipe perisporium is radially Also being provided with multiple limbers the most corresponding with hot water or cold water's import, bias spring one end abuts with regulating sliding sleeve, the other end then with Valve body abuts, and SMA will be regulated in the middle of sliding sleeve clamping to balance with bias spring by slide cartridge.

A kind of counterflow-preventing constant temperature valve core using SMA the most as claimed in claim 4, it is characterised in that described temperature adjustment component includes Homoiothermic screw rod, right valve barrel and sealing ring, homoiothermic screw rod stretches out right valve barrel termination, and homoiothermic screw rod and right valve barrel are with threaded engagement.

A kind of counterflow-preventing constant temperature valve core using SMA the most as claimed in claim 4, it is characterised in that described valve body includes left valve Body and right valve barrel.

A kind of counterflow-preventing constant temperature valve core using SMA the most as claimed in claim 4, it is characterised in that push pipe therein is replaced Its plate-like position is become to have the tep reel push rod of multiple limbers.

A kind of counterflow-preventing constant temperature valve core using SMA the most as claimed in claim 4, described temperature adjustment component include homoiothermic valve head, Homoiothermic screw rod, sealing ring and back-up ring, the water inlet of described hot and cold water controls assembly except including regulating sliding sleeve, slide cartridge and bias spring, It is characterized in that: also include mandrel, bracket and fixing nut, one end of SMA abuts with slide cartridge bottom surface, the other end by push pipe with Valve body abuts, and one end of bias spring abuts with regulating sliding sleeve, the other end and bracket and the portion of being slidably matched between valve body support Connecing, bracket is then connected fixing by the mandrel through SMA and push pipe connected fixed thereto with homoiothermic screw rod, and SMA passes through Regulation sliding sleeve is clamped to balance by slide cartridge with bias spring, and bracket has limbers, by mixing water passage with valve body outlet even Logical.

9. a kind of counterflow-preventing constant temperature valve core using SMA as described in claim 4 or claim 8, it is characterised in that: described Temperature adjustment component is arranged on former mixing water water outlet end, and outlet is arranged on the side-walls of valve body front end, the valve near cooling water inlet Body bottom surface is to close, and the regulation slide cartridge that the water inlet of described hot and cold water controls in assembly is regulation sliding sleeve and slide cartridge to be made of one, SMA one end abuts with regulation slide cartridge bottom surface, and the other end is then abutted with valve body bottom surface by push pipe, and bias spring one end is sliding with regulation Cylinder abuts, and the other end then abuts with homoiothermic screw rod.

A kind of counterflow-preventing constant temperature valve core using SMA the most as claimed in claim 4, described temperature adjustment component include homoiothermic valve head, Homoiothermic screw rod, sealing ring and back-up ring, it is characterised in that: the water inlet of described hot and cold water controls assembly and includes regulating sliding sleeve, long slide cartridge, length Slide cartridge lid, push pipe, push pipe support claw and the short axle of tep reel, regulation sliding sleeve is fixing to threaded with long slide cartridge, and long slide cartridge right-hand member has length Slide cartridge lid is fixed thereto, SMA, push pipe, short mandrel and bias spring is closed from left to right wherein, at the bottom of SMA one end and long slide cartridge Face abuts, and the other end abuts with push pipe, and push pipe further through that be arranged on push pipe right part and be perpendicular to its axial line uniform Several push pipe support claws abut with valve body, push pipe support claw is stretched out by long slide cartridge right part perisporium longitudinally corresponding uniform long rabbet And insert on valve body and to position among corresponding notch, push pipe and long slide cartridge radially are designed with corresponding respectively on valve body at its perisporium The limbers of hot and cold water inlet, the short axle of tep reel of anti-torsion stretches out long slide cartridge lid, is slidably matched, and fixes it with homoiothermic screw rod, With homoiothermic screw rod, left and right moves axially, and the dish of bias spring one end axle short with tep reel abuts, and the other end abuts with long slide cartridge lid, The elastic force back action of SMA and bias spring up to balances together with regulation sliding sleeve in long slide cartridge two ends.

The 11. a kind of counterflow-preventing constant temperature valve cores using SMA as described in claim 1 or claim 4, it is characterised in that: institute Stating in the hot and cold water intake tunnel of hot and cold water water inlet control assembly and arrange a jet bar, its right-hand member is fixed on homoiothermic screw rod or push pipe On, left end stretches near the hot water mouth on the left of cold water inlet.