CN2112735U

CN2112735U - Automatic homothermal water mixing valve

Info

Publication number: CN2112735U
Application number: CN 91228441
Authority: CN
Inventors: 王庆元; 高莹; 扈红玫
Original assignee: Individual
Current assignee: Individual
Priority date: 1991-11-18
Filing date: 1991-11-18
Publication date: 1992-08-12

Abstract

The utility model relates to an automatic constant-temperature water mixing valve which uses a heat pipe, or a corrugated pipe or a memory alloy spring as the temperature-sensitive sensing element. The temperature and the flow are regulated through two coaxial turn knobs. The constant temperature is automatically maintained. The phenomena of the unstable temperature of the shower head and the abuse that an unified high-level tank can not freely select the water temperature are overcome without using the power supply. Except for using for the shower, the utility model can be used for any other occasion which requires the automatic constant-temperature water mixing to obtain the purposes of energy saving and water saving.

Description

Automatic homothermal water mixing valve

The utility model belongs to a kind of water-saving valve class, particularly a kind of water admixing device of hot and cold water automatic constant temperature, the automatic thermostatic water mixing valve that uses during for shower.

The general water mixing switch of shower room mostly is hot and cold water is controlled respectively at present, all to slattern some water in the prior in use temperature adjustment process at every turn, the pressure surge that other people of same pipeline cause when regulating water temperature in the using process can make other shower head water temperature that has regulated temperature change again, the phase mutual interference, regulate repeatedly, increased the weight of the waste of water resources.

The automatic temperature-control showering of existing patent application such as CN 87208673 U adopt thrermostatic bimetal-plate to control hot and cold water supply flow ratio automatically as temperature sensibility, so that reach the purpose of automatic adjusting bath water temperature.But spiral helicine thermo-bimetal's reed belongs to a kind of thermoelasticity element, will produce deformation after being subjected to extraneous mechanical resistance, is difficult to promote to bear the movement parts of certain external force, slips up easily.This valve also needs to open in addition hot water or cold water's tap control flow rate when regulating the flow size, and spirality bimetallic strip boundary dimension is bigger, and it is attractive in appearance that the whole valve body moulding is difficult to.

The purpose of this utility model is to propose a kind of both adjustable gentle automatic constant temperature, can regulate flow again, and simple in structure, adjustable thermostatic easy to use mixes water valve.

The purpose of this utility model is to realize like this, in can inside and outside two sleeves of slide relative, leave cold on the sidewall, hot water inlet, two water intakes on the inner core stagger by upper-lower position, two water intakes are on same horizontal line on the urceolus, inner core central authorities settle heat-sensitive element, this heat-sensitive element constitutes by heat pipe and bellows or by memory alloy spring, the one end is installed on the upper-end surface of inner core, the other end is installed on the lower end cap of urceolus, dress low boiling working fluid in the heat pipe, the working medium evaporation produces saturation vapour pressure and makes bellows expansion after it is heated, and promotes to move on the inner core, and the logical area of the upper orifice flow that originally communicates with the urceolus hot water inlet is reduced, cooling water inlet and the next orifice flow lead to enlarged areas, changed cold, heat is mixed the water flow ratio, and the water temperature behind the mixed water begins to descend, and the vapor tension in heat pipe and the bellows also descends thereupon, inner core returns to original position again under longitudinal balance temperature adjustment spring action, makes mixed water temperature keep constant.

If heat-sensitive element is changed with alternative above-mentioned heat pipe and the bellows of copper-based memory alloy spring, then should select phase transformation temperature points bath water temperature slightly under any alloy formula, when water temperature reaches the phase transition temperature value, memory alloy spring can extend immediately, the promotion inner core moves, and has one section to be complementary with proportional linearity range of temperature and temperature adjustment spring and to adjust coolant-temperature gage when utilizing alloy to stretch.

Can be regulated control to water-mixing temperature by the difference setting of the temperature adjustment spring being given stress.

Inside and outside sleeve is adjusted the temperature except that doing axial relative movement, also can relatively rotate the hot and cold water inlet actual internal area that makes on the inside and outside sleeve and change simultaneously, so as to adjusting the size of water flow.

Accompanying drawing 1 is an embodiment of the present utility model, and code name is described as follows among the figure:

1, thermoregulation knob 2, Flow-rate adjustment button 3, temperature adjustment spring

4, inner core 5, bellows 6, urceolus

7, heat pipe 8, lower end cap 9, mixed water tumbler

A, hot water inlet b, cooling water inlet c, mixed water out

D, mixed water chamber

The automatic thermostatic water mixing valve working procedure is as follows:

At first adjusting thermoregulation knob 1 applies for temperature adjustment spring 3 to give stress by spiral and sets water-mixing temperature, rotary current adjusting knob 2 is by little gradually big again, cold, hot water inlet also is opened gradually, cold-peace hot water enters inner core simultaneously and mixes the d of water chamber, mix little outlet of import of installation is the ladder hole shape greatly in the water chamber the mixed water tumbler 9 heat release sensing element of wherein feeling at ease, cold when what enter from a b water intake, when hot water flows to the upper outlet of inner core by mixing water tumbler 9, the heat pipe of heat-sensitive element is experienced its inner low boiling working fluid of water temperature saturation vapour pressure that the back evaporation produces that is heated bellows 5 is expanded in the tube, if it is identical with the pressure of 3 pairs cup-shaped barrel on temperature adjustment spring that saturation vapour pressure acts in the bellows power of cup-shaped bucket at the end, then because the last end face and the inner core 4 of bellows 5 are welded together, inner core 4 just is on this equilibrium position motionless, the water-mixing temperature of output promptly remains unchanged, mixed water constantly flows out from the radially gap that inner core 4 upper-end surface shoulders are left, and the mixed water out c at rear portion is discharged to shower head on urceolus 6.

If because supply water temperature or pressure change, the water temperature of mixing in the d of water chamber is changed, corresponding change also can take place in the saturated vapor pressure in bellows 5 and the heat pipe 7 thereupon, acts on power and temperature adjustment spring 3 disequilibriums of cup-shaped bucket at the ends in the bellows 5, and the position of inner core 4 will change up and down, if water-mixing temperature is higher than setting value, inner core 4 moves on just, and the hot water inlet flow area is reduced, and the cold water flow area strengthens, mixed water temperature will descend immediately, turn back to former setting value.If water temperature is lower than setting value, thermo-responsive interior saturated vapor pressure reduces, and the temperature adjustment spring gives stress forces inner core to move down, and the hot water inlet flow area is strengthened, and the cooling water inlet flow area reduces, and mixed water temperature will be gone up immediately, turn back to former setting value.As above-mentioned automatic adjusting, make the water temperature of mixing water out maintain setting value all the time.When doing Flow-rate adjustment, Flow-rate adjustment knob 2 drives inner core 4 by a pair of pin and rotates, hot and cold water intake flow area is strengthened simultaneously or is reduced, for making Flow-rate adjustment near linear, the spy is split into the hot and cold water intake on the inner core (upper hole and the next hole) square or rectangle, hot and cold water intake on the urceolus is split into garden or square, and the cross section unfolded drawing of inside and outside water inlet as shown in Figure 2.

The utility structure that the present invention realizes, have simple and reliable, machined surface is few, the advantage that does not in use need other energy, compare with other temperature adjustment shower heads, the present invention is constant temperature automatically, and temperature is optional, flow is adjustable, adopt coaxial knob convenient attractive in appearance, overcome both hands wheels and transfer respectively hot and cold and transfer altogether the shortcoming of time-consuming, the water wasting of flow, and interfere with each other or the adopt head tank of many shower heads when using temperature adjustment simultaneously unify can not select separately when temperature control supplies water the disadvantage of required temperature, it is very effective that hot water is particularly saved in using water wisely.

Claims

1, a kind of automatic thermostatic water mixing valve, formed by inner and outer sleeves, temperature-sensing element (device), temperature adjustment spring, thermoregulation knob, Flow-rate adjustment button, hot and cold water intake, mixed water tumbler and mixed water out, it is characterized in that temperature-sensing element (device) is made up of the interior heat pipe concatenation bellows that fills low boiling working fluid or constitute by the memory alloy spare of spring-like, hot and cold water intake on the inner core, stagger up and down in (upper hole and the next hole), hot and cold water intake on the urceolus is on same horizontal line, mix in the water chamber and be provided with mixed water tumbler, mixed water tumbler is the big ladder hole shape of the little outlet of import.

2, it is characterized in that as the described automatic thermostatic water mixing valve of above-mentioned claim 1 water intake (upper hole and the next hole) cross section on the inner core is square or rectangle, the water intake cross section on the urceolus is a garden shape or square.