Regulation 3.2 Revised 2/98 AUST RALIA Patents Act, 1990 COMPLETE INNOVATION SPECIFICATIO NAME OF APPLICANT XIE, Qingjun ACTUAL INVENTOR XIE, Qingjun ADDRESS FOR SERVICE Peter Maxwell and Asso iates Level 6 60 Pitt Street SYDNEY NSW 2000 INVENTION TITLE: CONSTANT TEMPERA URE AND BALANCED PRESSURE PIPELINE VALVE DETAILS OF CONVENTION APPLICATION NO China - 200920051615.1 20 February 2009 The following statement is a full description of this invention includi g the best method of performing it known to me: m:\docs\20091020\1 69798.doc 2 This invention relates to the technical field of water -heating equipment, in particular to the constant temperature and balanced pre sure pipeline valve. With the progress of the science and technology ad the improvement of the people's living standard, the pipeline valve with there iostatic function has 5 been widely used in the various water supply systems ir families or hotels, such pipeline valve is characterized in that the customer regulate the outlet water temperature according to the actual demand, and the outlet water temperature keeps constant after the temperature is set, which can avoid fluctuation of the outlet water temperature due to pressu e change of the 10 incoming water and unstable temperature, and is safe arid can prevent scald. The key point of keep the outlet water temperatur constant is to detect the actual and valid the outlet water temperature and se sitively regulate the ratio of the incoming cold water and hot water. To detect he actual and valid the outlet water temperature means that and then to detE t the temperature of 15 the mixed outlet water after the cold water and hot water s fully mixed, which can be completely achieved with prior art. The ordinary thermostatic pipeline valve sold on thi market only functions on the supply failure of cold water, namely, wh n the cold incoming water suffers suddenness supply failure, the flow of the mixed outlet water 20 drops rapidly or even stops; but such valve cannot make effective disposal on the supply failure of hot water, and the flow of mixed outlet water cannot drop rapidly or stop when the hot incoming water suffers sudde ness supply failure in winter, which may make the customer frostbite or feel u comfortable and which is the raeson for it that the existing product cannot r eet the requirement 25 of TMV3 certification system (TMV certification is a indepe dent third-party certification plan managed by BuildCertTM, it is the highest criterion of NHS Estates D08 standard for mixed valve in UK used to ertificate category IllI 29/06/09 3 of thermostatic mixing valve, it also certifies category 11 f thermostatic mixing valve in UK market for preventing child accident and im roving the safe use of domestic hot water). Furthermore, the seal of the incoming cold water and hot water of the traditional thermostatic pipeline valve is realized by the end face 5 seal of the regulator, which is poor in sealing effect and nreliable in performance and needs high processing precision of the sealing face. The invention provides a constant temperature an balanced pressure pipeline valve, the purpose of the invention is to relieve ie pressure influence of the incoming cold water and hot water through a sim e structure on the 10 basis of the thermostatic function; The valve adopts a ru ber axial seal to regulate the clearance of the incoming cold water and h t water and realize the purpose of balanced pressure. The aforesaid purpose is realized by the following technical solution: A constant temperature and balanced pressure pi eline valve 15 comprising a valve body, a return spring, a thermosensit Ve element, a regulator, a regulation screw and a valve plug; a cold wa er inlet and a hot water inlet are arranged on the side wall of the valve boc at different height from the down to top, the top opening of the valve body is provided with the valve plug and the regulation screw, the lower end of the regulation screw 20 touches and fits the top of the thimble of the thermosensl ive element, the temperature sensor of the thermosensitive element touc es and fits the regulator, the lower part of the regulator touches and fits the return spring, the regulator is driven by the thermosensitive element and th return spring and floats up and down in the inner chamber of the valve bod , the bottom end of 25 the valve body is provided with a mixed water outlet; whi h is characterized in that: the upper end of the regulator is always higher than he hot water inlet, and the lower end of the regulator is always lower than te cold water inlet, a 29/06/09 4 regulation opening is cut on the regulator to regulate the opening degree of the cold water inlet and hot water inlet, the periphery of the egulator is provided with a first sealing ring for sealing the cold water inlet ard a second sealing ring for sealing the hot water inlet. 5 A third sealing ring is arranged between the upper end of the regulator and the inner wall of the valve body above the hot wate inlet; and a fourth sealing ring is arranged between the lower end of the re ulator and the inner wall of the valve body under the cold water inlet. The invention can stop the supply of cold water or the s pply of hot water 10 ,respectively to prevent scald when the supply of cold w ter gets abnormal, also it can prevent frostbite and the uncomfoi able feeling when the supply of hot water gets abnormal and the cold water is too cold; Furthermore, the invention adopts a sealing ring to axiall seal the incoming cold water and hot water and is simple in structure. Compared with the ordinary 15 thermostatic pipeline valve, the invention can withstand higher pressure difference ratio between the incoming cold water and ho water, and the performance of the product is safe and reliable when the pressure difference ratio of the cold to the hot incoming water pressure is no reater than 6:1 and can meet the requirement of TMV3 certification system. 20 The invention may be better understood with refer nce to the illustrations of embodiments of the invention which: Figure 1 is a section view of the invention of const nt temperature and balanced pressure pipeline valve; Figure 2 is an exploded view of the invention of co stant temperature 25 and balanced pressure pipeline valve. As shown in Figure 1 and Figure 2, the constant temperature and balanced pressure pipeline valve provided by the embodi nent comprising a 29/06/09 5 valve body 1, a return spring 2, a thermosensitive elem nt 3, a regulator 4, a regulation screw 5, a valve plug 6, a nut cap seat 7, nut cap 8, a first sealing ring 9, a second sealing ring 10, a third sealing ring 48, fourth sealing ring 49, a fifth sealing ring 51 and a grip ring 101. 5 A cold water joint 11 and a hot water joint 12 is re pectively arranged on the both sides of the valve body 1, a cold water inlet 11i and a hot water inlet 121 corresponding to the cold water joint and the hot wa er joint respectively are provided on the side wall of the valve body 1 at different height; the upper opening of the valve body 1 is provided with the valve pl g 6, the regulation 10 screw 5 matches with the internally-threaded hole of thd valve plug 6, the fifth sealing ring 51 is arranged on the periphery of the lower nd of the regulation screw 5. The upper end of the regulation screw 5 extend out of the valve plug 6 for manual setting of the temperature, and the regulation screw 5 is provided with a grip ring 101 for limiting the up and down move et range of the 15 regulation screw; the lower end of the regulation screw . touches and fits the thimble of the thermosensitive element 3, the temperat ire sensor of the thermosensitive element 3 touches and fits the regulator 4; the below of the regulator 4 is provided with the return spring 2, the lowE part of the regulator 4 touches and fits the return spring 2. The regulator 4 clch ely contacts the inner 20 wall of the valve body 1 and can float up and down the in er chamber the valve body 1 when driven by the thermosensitive element 3 anI the return spring 2, a regulation opening 41 is cut on the regulator 4; whEi the regulator 4 floats up and down, the size of the overlapping section between the regulation opening 41 and the cold water inlet 111 and hot water inh t 121 respectively 25 determines the ratio of the incoming cold to the hot water. The first sealing ring 9 and the second sealing ring 10, which are separately located on the above and below of the regulation opening 41, are provided on the periphery of the 29/06/09 6 regulator 4 to realize the sealing purpose. The third sea ing ring 48 is arranged on the periphery of the upper end of the regulator 4, anc fits the inner wall the valve body above the hot water inlet 121; the fourth sealing ring 49 is arranged on the periphery of the lower end of regulator 4 and fits the inner wall 5 of the valve body under the cold water inlet; When the egulator 4 floats up and down, its upper end is always higher than the hot ater inlet 121, and the lower end is always lower than the cold water inlet 111, so it can be guaranteed that no water will be leaked along the upper and lower periphery of the regulator 4. The upper end of the valve body 1 is pr vided with a nut cap 10 seat 7, which holds the nut cap 8, so the regulation sc ew 5 can be covered after the temperature is set. The bottom end of the valve body 1 is provided with a mixed water outlet 131 and an outlet water joint 1 . The following is the description of the working principle of the invention with the help of the Figures. The working principle of the invention is that: the 15 three arrows in Figure 1 stand for the incoming direction of the cold water (C) and the hot water (H) and the outflow dir tion of the mixed water (Mix) , the cold water flows into the regulator 4 through the clearance between the valve body 1 and the first sealing ring 9, tl e hot water flows into the regulator 4 through the clearance between the valve 3ody 1 and the second 20 sealing ring 10; the cold water and hot water is fully mi ed in the chamber of the regulator 4 and contacts the thermosensitive elemen 3, When the pressure of the incoming hot water rises due to the outsi e influence or the hot water temperature rises, the temperature of the mixed vater will rise suddenly and exceed the initial set temperature, at this time the thermosensitive element 25 3 pushes the regulation screw 5 under the effect of therna I expansion, and the regulation screw 5 has been fixed and cannot move (hen the initial temperature is set, so the thermosensitive element 3 is a ected by the 29/06/09 7 counterforce and drives the regulator 4 to move downw rd, which reduces the clearance between the valve body 1 and the second se ling ring 10 on the regulator 4, namely, the hot water inlet 121 gets smaller and the mixed water temperature is restored to the initial set temperature; when the pressure of 5 the incoming hot water decreases due to outside influere or the hot water temperature decreases, the temperature of the mixed %ater will suddenly decrease and is lower than the initial set temperature, a this time the thermosensitive element 3 separates from the regulation screw 5 under the cold contraction effect, the regulation screw 5 has been fixed and cannot 10 move when the initial temperature is set, so the thermo snsitive element 3 has a clearance and the regulator 4 is driven upward by the estored force of the return spring 2, the clearance between the valve body and the second sealing ring 9 of the regulator 4 decreases, namely, the :old water inlet 111 gets smaller and the mixed water temperature is restore to the initial set 15 temperature; When the cold water shows the two afore aid conditions, the regulator 4 will move contrarily. The setting of the initial temperature is to turn the egulation screw 5 to regulate the clearance between the incoming cold water nd hot water to control the temperature of the mixed water, the incoming cold water and hot 20 water flow into the regulator 4 through the valve body 1, the hot water contacts the thermosensitive element 3 in the chember o the valve body 1 and flows out through the mixed water outlet 131 after being I Ily mixed. 25 29/06/09