JPS6149545B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an improvement in a mixing faucet among sanitary appliances that can automatically adjust the temperature of hot water using a temperature-sensing function.

(Prior art) Conventionally, a temperature-sensitive medium was used to sense the temperature difference between hot and cold water.
A hot/cold water mixer faucet of the type in which the valve body is actuated by the responsive operation is the one shown in the drawings of Japanese Utility Model Publication No. 1983-40330 (FIG. 6 of the drawings of the present application).

To briefly explain the above FIG. 6, the mixing faucet body 40 has a mixing chamber 41 communicating with the discharge port 42
and a bellows 43 which is disposed within the mixing chamber 41, has a temperature-sensitive expansion medium sealed therein, and expands and contracts;
A valve body 44 that adjusts the opening degrees of the water valve port 45 and the hot water valve port 46 by the movement of the bellows 43, and a coil that relieves the valve body 44 from strongly pressing against the valve seat 47 due to excessive expansion of the bellows 43. spring 48
By moving the cylindrical body 49 and the bellows 43 inside, the water valve port 45 and the hot water valve port 4 can be opened.
When the temperature adjustment knob 50 is rotated to set a predetermined temperature, the bellows 43 moves, and the valve body 44 advances and retreats accordingly. The opening degrees of the water valve 45 and hot water valve 46 are adjusted to discharge mixed water at an appropriate temperature.

In the case of the above-mentioned mixing faucet, the mixing ratio of hot water and water is adjusted by moving the valve body connected to the bellows, and the water is stopped in the mixing chamber, which is the secondary pressure side, so the pressure is exceeded. The fluid on the side, especially the water side, which normally has a high pressure, presses the hot water side, which has a low pressure, and flows backwards, not only causing cold water to enter the hot water side of the water heater.
This can have negative effects such as applying high pressure and damaging the water heater, or water that is once supplied from the main pipe to the valve body (normally considered dirty water) may flow back into the main pipe via the hot water pipe. It had many unhygienic defects.

(Problems to be Solved by the Invention) The problems to be solved by this invention are to reduce hot water consumption by separately shutting off hot water and water on the primary pressure side, and to increase productivity by simplifying the mechanism. At the same time, correct steering wheel operation eliminates erroneous operation and ensures safety.

(Means for Solving the Problems) The technical means taken by the present invention to solve the above problems is to provide a hot water passage and a water passage in parallel on one side in the axial direction so as to be separated vertically by a partition wall. A valve body that communicates with a hot water supply source is formed in the valve body, and a horizontally elongated cylindrical gripping socket that is eccentric in the axial direction is provided in the valve body, and a fluid distribution chamber and a communication chamber are arranged axially along the gripping socket. A pair of opposing valve bodies and a valve cylinder containing a temperature-sensitive medium are inserted and combined into the gripping socket, and the temperature-regulating body is connected to the temperature-sensitive medium and the end of the valve cylinder mouth. The actuator of the mechanism is elastically engaged, and the spring between the nut corresponding to the actuator and the spring between the two valve bodies of the pair are elastically balanced, and the temperature of the temperature-sensitive medium is sensed. When activated, both valve bodies are activated to adjust the flow rate of hot water and water as appropriate, and the hot water and cold water can be stopped separately by operating the flow rate adjustment handle connected to the valve body. It is.

(Function) A thermosensitive medium senses the hot water flowing into the working chamber and moves the valve body to automatically control the temperature of the hot water, as well as operate the flow rate adjustment handle connected to the valve body. This shuts off hot water and water separately on the primary pressure side.

(Example) Hereinafter, the configuration of the present invention will be explained in detail based on the drawings.

An embodiment of the present invention is shown in FIGS.
As shown in FIG.
The communication chambers 4 and 4' of larger diameter are connected concentrically and have the same diameter, and a hot water inlet 5 and a water inlet 6 are opened in the walls of the communication chambers 4 and 4', respectively, and the communication chambers 4' And screw holes 7, 7a having different inner diameters are provided at each outer end of the gripping socket 2. The hot water passage 8 and the water passage 9 are provided in parallel on one side of the valve body 1 in the axial direction, and the hot water passage 8 and the water passage 9 are provided in parallel with each other on one side of the valve body 1 in the axial direction.
The parallel parts are separated into upper and lower parts by
Each internally communicates with the hot water inlet 5 and the water inlet 6 separately, and externally communicates with a water heater and water pipes, respectively. The cylinder body 11 has a cylindrical shape, and has threaded ports 7b, 7c and valve ports 12, 1 with different inner diameters and lengths at both ends.
2' valve seats 13, 13' are provided in the center, respectively, and a through hole 14 communicating with the circulation chamber 3 is provided, and this cylindrical body 1
1 is inserted into the gripping socket 2 through a plurality of seals 15 provided on the circumferential surface, and is assembled to the valve body 1 by a nut 16 attached to the screw opening 7.
A valve body 17 for continuing the flow of hot water and a valve body 18 for regulating the flow rate are slidably interposed in a valve chamber 20 formed by the valve seat 13 and a plug 19 attached to the screw port 7c. The bodies 17 and 18 have a spring 22 interposed between spring seats 21 and 21' which are recessed on opposite sides.
2, the valve body 18 is always in contact with the valve seat 13 side, and the flow rate reaching the valve port 12 via the hot water inlet 5 and the hot water inlet 5' of the cylinder body 11 increases or decreases; Similarly, the increase and decrease of the fluid passing through the inside of the valve body 18 from the water inlets 6 and 6' and reaching the valve port 12 through the plurality of through holes 14' opened on the inner end surface of the valve body 18 will be described later. It is configured to be performed in conjunction with the operation of the hot medium 30. A handle shaft 23 for operating the valve body 17 is screwed into a guide screw hole 24 of a plug 19a attached to the screw opening 7a so as to be movable forward and backward.
Pressure is applied to the end face of the valve body 17 through the opening 25 of
By operating the handle 38, the valve body 17 is moved back and forth to adjust the flow rate, and the hot water and the water are linked so that they can be stopped separately on the primary pressure side.

A separately provided valve cylinder 26 integrates the above-mentioned ordinary temperature-sensitive medium 30 into a working chamber 29 having a fluid inlet 27 and an outlet 28, and this valve cylinder 26 is inserted into the working chamber 29' of the cylinder body 11. An actuator 32 is connected to the end portion 31 of the temperature-sensitive medium 30 so as to be slidable therein, and corresponds to the valve seat 13'. The handle shaft 23' for temperature adjustment can be freely operated by a handle 38', and is attached to the threaded part 3 of the cylinder body 11 via a packing presser 33.
4, and a nut 1 having a female spline portion 36 on the male spline portion 35 of the handle shaft 23'.
The nut 16' and the actuator 32
A spring 22' is interposed between the temperature sensitive medium 30 and the working chamber 29.
The valve element 18 is activated in response to the temperature of the fluid passing through the valve element 18, and the hot water and water are linked so as to be automatically increased or decreased by the operation of the valve element 18. The elastic pressure of the spring 22' is balanced with the elastic pressure of the spring 22, which supports the valve element 18 while being pressed by the valve cylinder 26, which moves in the direction of arrow P together with the temperature-sensitive medium 30.

The valve body 1a shown in FIG. 5 is a valve body 1a in which a cylindrical body 11 and a cylindrical body 11' made separately are joined together, and a valve body 17 on the cylindrical body 11 side and a handle shaft. 23 are integrally connected by a connecting part 34',
Also, a plug 19 interposed in the threaded opening 7b on the side of the cylinder 11'
An actuator 32 is slidably housed in the actuating chamber 29a of b, and its plug 19b is connected to a handle shaft 23', and a packing presser 33' of the handle shaft 23',
A nut 16' that rotates together with the handle shaft 23' is provided with a pair of regulators 60, 6 for preventing excessive rotation of the handle shaft 23'.
0' is provided.

Now, when the valve bodies 17 and 18 are in the position shown in FIG. 2, hot water flows through the hot water passage 8 as indicated by arrow _P1 , through the hot water inlet 5 opening at the end, and into the communication chamber 4'. A cylindrical body 1 that reaches and opens on the opposite side.
Each through hole 14' and each through hole 14' enter the inside of the valve body 18 from the hot water inlet 5' on one circumferential surface through the gap between the valve bodies 17 and 18, and open to the inner end surface of the valve body 18. It reaches the working chamber 29 of the valve cylinder 26 through the facing valve port 12 and the inlet 27 facing the valve port 12, and moves to the outlet 28 side while soaking the surface of the temperature-sensitive medium 30 in standby. The through hole 14 of the cylindrical body 11 passes through the outlet 28 from the preceding one and faces this outlet 28.
The hot water advances to the circulation chamber 3 through the flow chamber 3, and the hot water is discharged from the faucet 39 shown in FIG.

During this hot water supply, the temperature-sensitive medium 30 whose temperature is sensed in the working chamber 29 gradually moves in the direction of the arrow P in the working chamber 29 due to its sensitive characteristics, so that The valve cylinder 26 moves in the same direction and presses the valve body 18, which is in contact with the end face of the valve cylinder 26 as shown in FIG. 2, in the same direction. Therefore, the distance between the valve body 18 and the valve body 17 is appropriately narrowed, and the distance between the valve body 18 and the valve port 12 on the opposite side is widened, so that the cold water reaching the communication chamber 4 along the path of arrow _P2 is advances from the water inlets 6, 6' to the valve port 12,
While passing through the valve port 12 and the working chamber 29 of the valve cylinder 26 as described above, the water flows out to the faucet 39 through the outlet 28, the through hole 14, and the circulation chamber 3 while appropriately mixing with the hot water. During this time, the temperature-sensitive medium 30 senses the temperature drop due to the inflow of cold water and responds in the opposite direction, automatically adjusts the distance between the valve body 18 and valve body 17, and supplies hot water at an appropriate temperature from the faucet 39. .
The end portion 31 of the temperature-sensitive medium 30 during this temperature adjustment is
The actuator 32 is supported by the actuator 32 which is elastically engaged through the valve element 32, and the springs 22 and 22' which flexibly separate the valve bodies 17 and 18. Temperature adjustment is easy, but if further fine adjustment is required, operate the handle 38' to rotate the handle shaft 23' in the screwing direction, and the nut 16' that engages with the male spline portion 35 The spring 22' is compressed by moving in the direction of arrow P, and the pressure is applied to the temperature-sensitive medium 30 via the actuator 32, thereby reducing the operating range of the temperature-sensitive medium 30 for fine adjustment. In addition, when changing the supplied flow rate, operate the handle 38 to adjust both valve bodies 1.
When the distance between valves 7 and 18 is changed, the distance between the valve body 18 and the valve seat 13 is automatically adjusted by the action of the temperature-sensitive medium 30, and the supply amount can be changed while maintaining the supply temperature. Furthermore, in order to stop the hot water, if the handle 38 is screwed in, the handle shaft 23 moves in the opposite direction of the arrow P, and its end face presses the valve body 17 toward the valve body 18, so that the hot water is released from the valve opening. On the primary pressure side of the communication chamber 4', the cold water is separately stopped and stands by. In addition, if dirt or foreign matter is present on the mutually corresponding surfaces of the valve bodies 17, 18, valve chamber 20, and valve seat 13 due to long-term use, and this interferes with fine adjustment of the water temperature,
By operating the handle 38 and supplying water while moving the valve body 17 back and forth several times in the forward and backward directions, dirt and foreign matter in the hot water can be easily removed.

Further, another embodiment shown in FIG. 6 also operates in the same manner as described above.

(Effects) Since the present invention has the above configuration, it has the following advantages.

(1) By pressing the valve body connected to the handle shaft against the water side valve seat, both hot water and cold water are stopped separately on the primary pressure side, so cold water that exceeds the pressure will not flow back into the water heater. , it is possible to prevent the loss of heat due to the temperature drop and the risk of extinguishing the pilot flame.

(2) The valve body on the fixed side and the handle shaft are integrally connected to make it possible to adjust the flow rate of the mixed water, and due to long-term use, limescale or limescale may form on the valve body and the corresponding surface of the valve chamber that accommodates this valve body. If foreign matter adheres and obstructs fine adjustment of the water temperature, by moving the valve body via the handle shaft, scale, foreign matter, etc. can be easily removed and the valve can be opened and closed smoothly.

(3) The temperature control mechanism, temperature-sensitive medium, and two valve bodies are interposed on the same axis inside the cylinder to form a cartridge-like structure, and the handles are attached to both ends of the valve body, so compared to the conventional one. This not only eliminates the possibility of erroneous operation of the handle, but also greatly increases productivity compared to conventional systems due to its simple mechanism.

(4) The gripping socket of the cylinder body is eccentric in the axial direction of the valve body, and the hot water passage and water passage are arranged parallel to the gripping socket, so that the ends of the hot water passage and the water passage are inserted vertically and alternately. The valve body has been made smarter in the width direction by arranging it in the width direction, making the valve body significantly more compact than conventional models.
By mounting the valve body at a position closest to the wall surface, the space above the washing area of a sink or the washbasin of a vanity table can be widened, and the usability of the washing area or washbasin can be significantly improved.

[Brief explanation of the drawing]

FIG. 1 is a front view of the valve body of the present invention, FIG. 2 is an enlarged plan sectional view, FIG. 3 is a sectional view taken along line A-A in FIG. 2, and FIG. 5 is a sectional view taken along line C-C.
FIG. 6, which is an explanatory diagram of another embodiment, is an explanatory diagram of the prior art. (Explanation of symbols of main parts) 1...Valve body,
2...Gripping socket, 3...Flow chamber, 4, 4'...Communication chamber,
8... Hot water passage, 9... Water passage, 10... Partition wall, 11... Cylindrical body, 13, 13'... Valve seat, 16, 16'... Nut,
17, 18... Valve body, 20... Valve chamber, 22, 22'...
Spring, 23, 23'...Handle shaft, 26...Valve cylinder, 29, 29'...Working chamber, 30...Temperature-sensitive medium, 3
2... Actuator, 37... Temperature adjustment mechanism, 38, 38'
…handle.

Claims (1)

[Claims] 1. A gripping socket 2 having a horizontally long cylindrical shape and eccentric in the axial direction is provided in the valve body 1, and a fluid circulation chamber 3 and communication chambers 4, 4' are respectively provided concentrically around this gripping socket 2, These distribution chambers 3 and communication chambers 4,
4', the hot water passage 8 and the water passage 9 are separated by a partition wall 10.
The temperature-sensitive medium 30 is integrally installed in the gripping socket 2, and the working chamber 2
The flow rate of hot water and water is adjusted between a valve cylinder 26 slidably installed in the valve body 9' and a valve body 17 which interrupts the flow of fluid and shuts off the water by moving the handle shaft 23 forward and backward. A cylindrical body 11 equipped with a valve body 18 that
A temperature adjustment mechanism 37 operated by a handle is attached to one end of the cylinder 11, and one end of a handle shaft 23 is attached to the valve chamber 20 of the cylinder 11 to open and close the valve body 18 simultaneously or separately. between the spring 22, the pressure regulating nut 16' of the temperature regulating mechanism 37, and the actuator 32 between which the valve body 18 is always in contact with the valve seat 13 side. The springs 2 and 2' are elastically balanced, and the valve bodies 17 and 18 are actuated by the temperature sensing of the temperature-sensitive medium 30 to adjust the flow rate, thereby automatically adjusting the flow rate of hot water and cold water. A single-handle hot water mixer faucet characterized in that hot water and cold water are stopped separately on the primary pressure side by adjusting the valve body 17 and moving the valve body 17 toward the valve body 18 side by operating a handle 38.