CN2336386Y

CN2336386Y - Cold- and hot-liquid mixing thermostat

Info

Publication number: CN2336386Y
Application number: CN 97229072
Authority: CN
Inventors: 舒本仁
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-10-26
Filing date: 1997-10-26
Publication date: 1999-09-01
Anticipated expiration: 2007-10-26

Abstract

The utility model belongs to a cold and hot liquid mixing thermostat which is especially suitable to be used for each shower head of a bathhouse to mix cold and hot water and to keep constant temperature. The device is mainly formed by installing in series a temperature regulating knob, a sealed temperature sensing container, a valve whose the axial movement of the main valve core simultaneously controls cold and hot water valve mouths to change in reverse directions, wherein, the temperature regulating knob can transmit motion through ethanol in the temperature sensing container and can rapidly and conveniently regulate the sizes of the cold and hot water valve mouths for regulating optimum initial water outlet temperature. When the water outlet temperature changes, the volume of the ethanol in the temperature sensing container can changes accordingly to push the main valve core to move for regulating the cold and hot water valve mouths and enabling the water outlet temperature to rapidly revert to regulated initial temperature.

Description

Cold and hot liquids mixing thermostat

Automatically recovering just when the utility model relates to a kind of hot and cold liquid mixing temperature and changes, each shower head hot water or cold water of fixed temperature, particularly bathhouse mixes the device that keeps water termostat.

In the bathhouse each shower head by two independently throttling valve control, regulate hot water or cold water's flow respectively, mix from shower head through three-way connection then and flow out, the hot water or cold water's flow proportional that enters three-way connection has determined leaving water temperature.

There is following defective in this regulating and controlling mode:

1, must carry out the open and close operation respectively to two throttling valve during the open and close shower of water;

2, must be respectively when adjusting coolant-temperature gage to two independently its openings of sizes of throttle valve adjustment to regulate hot water or cold water's flow proportional, troublesome poeration:

3, hot water or cold water's throttling valve of each shower head of bathhouse all is in parallel, in case contiguous have the people to open or when closing hot water or cold water's throttling valve, can cause in the water supply line hot water or cold water's pressure to reduce or raises.The variation of pressure not only causes the variation by throttle flow rate, and the fixed side in the hot water or cold water place of meeting and discussing goes out the state that flow resistance retaining the opposing party goes out stream and also changes in three-way connection, cause and enter this shower head hot water or cold water flow proportional and change, thereby leaving water temperature is changed, even water outlet is hot or very cool.

For solving the unstable problem of the leaving water temperature that causes because of the feed pipe variation in water pressure, Sichuan Liu's drench applied for adding the three-way connection utility model patent of dividing plate in 1998.This scheme still with equally adopt in the past two independently throttling valve open and close, regulate hot water or cold water's flow respectively, adopt three-way connection to mix the hot water or cold water, improvements are that in common three-way connection the center sets up one vertical with the hot water or cold water inflow direction, the dividing plate parallel with the water outlet direction, the hot water or cold water mixes in co-flow after flowing through the dividing plate turning.When hot and cold water supply line hydraulic pressure changed, owing to the separation that stops of dividing plate, a side came water to come the influence that stops of water to reduce greatly to the other side, reduced thereby hot water or cold water's blending ratio is changed, and had reduced the variation of leaving water temperature.Yet this scheme does not relate to source pressure changes the fluctuations in discharge of passing through throttling valve that causes, and only just makes moderate progress to solving the leaving water temperature instability problem, and leaving water temperature is still unstable.Since still adopt two independently valve regulate and control hot water or cold water's flow respectively, regulation and control are trouble still.

The purpose of this utility model is the thermostat that a kind of hot and cold liquid mixing will be provided.It only can mix up hot water or cold water's flow proportional rapidly with a temperature adjustment turn-knob, accesses temperature required; Set up the back when temperature and change, thereby when leaving water temperature changes, can regulate hot water or cold water's valve port size automatically and make water outlet return to the initial temperature of being set up as if water supply line hydraulic pressure.

The purpose of this utility model is achieved in that

The hot water or cold water mixes after flowing through hot water or cold water's valve port that valve body, main valve plug form respectively, and the feature of hot water or cold water's valve port is that moving axially of main valve plug makes a valve port open that another valve port turns down big the time; Mixed water flows through the airtight temperature-sensitive container that is full of the big liquid of coefficient of thermal expansion again and removes shower head.The feature of airtight temperature-sensitive container is that temperature sensing liquid has abundant big heat transfer area to experience the variation of mixed water temperature rapidly, and can carry out the feedback regulation action; The installation feature of temperature-sensitive container is that string is loaded between temperature adjustment turn-knob and the main valve plug, the rotation of temperature adjustment turn-knob can make main valve plug move axially by the liquid transfer in the temperature-sensitive container, the liquid self in the temperature-sensitive container also can make main valve plug move axially separately because of expanding with heat and contract with cold.Thereby the main valve plug that rotates the generation of temperature adjustment turn-knob moves axially and has changed hot water or cold water's valve port size change hot and cold water flow proportional to access suitable initial leaving water temperature; When the water source variation in water pressure caused leaving water temperature to change, the promotion main valve plug that expands with heat and contract with cold of the liquid in the airtight temperature-sensitive container moved axially and changes hot water or cold water's valve port size, makes leaving water temperature be returned to the suitable initial temperature of setting automatically.

The utility model is compared with the three-way connection scheme that adds dividing plate of Liu's drench and only can accessed suitable initial temperature with a turn-knob thereby regulate simple, rapid; When water temperature changed, the temperature-sensitive container can carry out feedback regulation hot water or cold water valve port size, flow proportional automatically, thereby effluent temperature constancy is constant.

Concrete structure of the present utility model is provided by following examples and accompanying drawing:

Accompanying drawing is according to the hot and cold liquid mixing thermostat general assembly drawing that the utility model proposes.

Below in conjunction with details and the working condition of accompanying drawing detailed description according to the concrete device that the utility model proposes.

Joint the 1, the 2nd, hot water or cold water's import, the switch spool 4 that the hot water or cold water controls by being linked by handle 3 enters cold water channel 6, cold water ring groove 13 and hot water channel 7, the hot water ring groove 11 on the valve body 5, the radial hole 15 that passes again on the main valve plug 12 mixes in main valve plug 12 with the hot water valve port 10 that ring groove 11 forms with cold water valve port 14 and the radial hole 9 on the main valve plug 12 that ring groove 13 forms, and the radial hole on main valve plug 12 16 flows out main valve plug then.When main valve plug 12 axially moved down, cold water valve port 14 increased and hot water valve port 10 reduces simultaneously, when main valve plug 12 moves up then hot water valve port 10 increase and cold water valve port 14 reduces simultaneously.The back-moving spring 8 that compression is equipped with in main valve plug 12 lower ends can make main valve plug 12 upwards reset.Main valve plug 12 upper ends have a small plunger 17 usefulness clearance fit to insert in airtight temperature-sensitive container 20 bottom plates 18 center pits, and effect is concentrated and acted in the axial displacement of stopper head 17 so that big liquid ethanol 23 volumes of coefficient of thermal expansion in the airtight temperature-sensitive container 20 expand with heat and contract with cold.Stopper head 17 tops are provided with a TR thin rubber seal membrane 19 and spill to prevent ethanol 23.Being installed with some copper tubes 22 in the sealing temperature-sensitive container 20 allows mixed water flow through.Temperature-sensitive container 20 can move axially in outer tube 21, and its upper surface 24 contacts by the cam 27 that little axle 26 drives with temperature adjustment turn-knob 25.Mixed water comes out after gap between temperature-sensitive container 20 and the outer tube 21 and copper tube 22 flow through from radial hole 16, spread out of or absorb heat to ethanol 23 by temperature-sensitive container 20 outer walls and copper tube 22 walls simultaneously, the apopore 29 from water out adapter 28 flows to shower head then.

After opening switch valve 4, the hot water or cold water promptly mixes from exporting 29 flows out.Rotate temperature adjustment turn-knob 25, its motion promptly is delivered to main valve plug 12 by little axle 26, cam 27, the loam cake 24 of temperature-sensitive container 20, ethanol 23, rubber diaphragm 19, adjust the size of hot water or cold water's valve port 14,10, hot water or cold water's flow proportional is to determine the suitable initial temperature of mixed water.Along with suitable initial temperature is determined, the initial volume of ethanol 23 has also just been determined.When external causes such as pressure of supply water variation cause the mixed water temperature to be higher than the suitable initial temperature of setting, mixed water passes heat into, and ethanol 23 makes its temperature rising volumetric expansion, promoting main valve plug 12 moves down, turn down hot water valve port 10 and open big cold water valve port 14 simultaneously, make water temperature return to the suitable initial temperature of setting.When the mixed water temperature is lower than the setting temperature, the heat that mixed water absorbs ethanol 23 makes its temperature decline volumetric contraction, main valve plug 12 moves up under the effect of compression reseting spring 8, opens big hot water valve port 10 and turns down cold water valve port 14 simultaneously, makes water temperature return to the suitable initial temperature of setting.Ethanol 23 changes moving up and down of the main valve plug 12 that produces of expanding with heat and contract with cold according to the lifting of mixed water temperature, has guaranteed the constant of leaving water temperature.

The automatic degree of regulation of leaving water temperature depends mainly on the volume of ethanol 23, the cross-sectional area of stopper head 17, how much time that the mixed water temperature changes back recovery setting initial temperature to be needed depends mainly on the heat transfer area size of mixed water to ethanol 23, that is diameter, the length of the quantity of water flowing copper tube 22, length and temperature-sensitive container 20.

Claims

1, cold and hot liquids mixing thermostat, this device has the switch valve of being made up of switch spool (4) and valve body (5) of a handle (3) interlock control, cold, hot water inlet joint (1), (2) and mixed water water out adapter (28), it is characterized in that an adjusting is cold, the turn-knob of hot water flow ratio (25), a cam (27), an inside is full of the airtight temperature-sensitive container (20) of the big liquid ethanol of coefficient of thermal expansion (23), a mixing valve that cold water valve port (14) and hot water valve port (10) are arranged and a back-moving spring (8) of forming by valve body (5) and main valve plug (12), airtight temperature-sensitive container (20) is coaxial and be loaded between the stopper head (17) of cam (27) and main valve plug (12) upper end with main valve plug (12), and back-moving spring (8) is loaded between main valve plug (12) lower end and the valve body (5).

2, device according to claim 1 is characterized in that whole airtight temperature-sensitive container (20) can do coaxial axially-movable with main valve plug (12) in outer tube (21).

3, device according to claim 1 is characterized in that being provided with in the airtight temperature-sensitive container (20) copper tube (22) that flows through mixed water.

4, device according to claim 1 is characterized in that the stopper head (17) of main valve plug (12) upper end is clearance fit in the bottom end cover (18) of airtight temperature-sensitive container (20).