JPH10332005A - Combination faucet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a combination faucet having a low temperature operating valve performing drainage. SOLUTION: A metal-made main frame outer cylinder 1 having a hot water connection port 3, cold water connection port 5 and a delivery port of cold or combination water is provided, in one end thereof, a switching handle 8 of cold water or temperature governed combination water is provided, in the other end, a temperature governing handle 11 is provided, in the main frame outer cylinder 1, a cylindrical cover consisting of heat resistant synthetic resin material, storing a switching unit 16 connectable to the switching handle 8 and a temperature governing unit 17 connectable to the temperature governing handle 11, is closely fitted to be mounted, in a combination faucet having a supply cold water side passage 27 where water from the cold water connection port 5 passes between the main frame outer cylinder 1 and the cylindrical cover to lead to inside the temperature governing unit 17 via a water introducing port 51 and a supply hot water side passage 28 where hot water from the hot water connection port 5 leads to inside the temperature governing unit 17, a discharge port 55 of water of the supply cold water side passage is provided in a lower surface of the main frame outer cylinder, a low temperature operating valve 56 is provided, which opens the discharge port 55 by detecting a temperature of water at a prescribed value or less.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot and cold water mixing tap capable of supplying water or mixed water whose temperature is controlled.

[0002]

2. Description of the Related Art A cylindrical cover having a size that allows a switching unit for switching between a mixed water discharge state and a water stop state and a temperature control unit for controlling the temperature of mixed water to be inserted into a metal outer cylinder. In a so-called thermo horizontal mixer tap configured to cover with water, water from a water connection port formed on the back of the main body outer cylinder passes through the space between the main body outer cylinder and the cylindrical cover to form water on the cylindrical cover. Since it is formed so as to reach the inside of the temperature control unit via the inlet, in cold regions, to prevent the water in the water supply side passage from cooling and solidifying, the water in the water supply side passage is prevented from being destroyed. An outlet for discharging to the outside is provided on the lower surface of the outer cylinder of the main body, and a manual valve for draining is provided at the outlet. By operating this manual valve, the outlet is opened to drain water.

[0003]

However, when the water temperature is low, it is necessary to manually perform a water draining operation, and if the water draining operation is forgotten, the mixing tap is broken due to freezing of the water supply side passage. There was a problem.

[0004] It is an object of the present invention to provide a hot and cold water mixing tap having a low-temperature operating valve for automatically opening a drain and draining water when the water temperature becomes low.

[0005]

SUMMARY OF THE INVENTION To achieve the above object, the present invention provides a hot water connection port connected to a hot water supply path, a water connection port connected to a water supply path, and water or mixed water. A metal main body outer cylinder having a discharge port is provided, and a switching handle for switching between a discharge state of water or a temperature-controlled mixed water and a water stop state is provided at one end of the main body outer cylinder,
A temperature control handle for controlling the temperature of the mixed water is provided at the other end of the main body outer cylinder, and a switching unit connectable to the switching handle and a temperature control handle connectable to the temperature control handle are provided in the main body outer cylinder. A cylindrical cover made of a heat-resistant synthetic resin material that accommodates the temperature control unit is inserted, and further, water from the water connection port passes through the space between the main body outer cylinder and the cylindrical cover to the cylindrical cover. A water supply side passage formed to reach the inside of the temperature control unit through the formed water inlet, and hot water from the hot water connection port reaches the inside of the temperature control unit from the hot water inlet formed in the cylindrical cover. In the hot and cold water mixing tap having the hot water supply side passage formed as described above, a discharge port for discharging water of the water supply side passage to the outside is provided on the lower surface of the main body outer cylinder, and when the water temperature of the discharge port becomes lower than a predetermined temperature. Detect this and open the outlet It is provided with a low-temperature operation valve for venting.

[0006]

Embodiments of the present invention will be described below. Note that the present invention is not limited thereby.

1 to 3 show a hot and cold water mixing tap (thermo horizontal mixing tap), FIG. 1 is a cross-sectional plan view, FIG. 2 is a front view thereof, and FIG. 3 is an exploded perspective view thereof. 4 and 5 are a longitudinal sectional view and an operation explanatory view of the low-temperature operation valve, respectively.

1 to 4, reference numeral 1 denotes a metal main body outer cylinder, 2 denotes a hot water intake socket fitted to the main body outer cylinder 1, and 3 denotes a hot water intake port provided on the back surface of the main body outer cylinder. (Hot water connection port), 4 is a water intake socket, 5 is a water intake port (water connection port) provided on the back surface of the main body outer cylinder, and the hot water intake socket 2
And the water intake socket 4 are connected to the hot water supply channel H and the water supply channel C via the crank-shaped connection pipes 6 and 7.

Reference numeral 8 denotes a switching handle provided on the right end of the main body outer cylinder 1 when viewed from the front. The switching handle 8 switches between supply and stop of water or mixed water to the discharge port 9 and to water or mixed water shower discharge port 10. Switch between supply and stop. Reference numeral 11 denotes a temperature control handle provided at the left end of the main body outer cylinder 1 when viewed from the front, and controls the temperature of the mixed water. Reference numeral 12 denotes a cylindrical cover for storing a switching unit made of a heat-resistant synthetic resin material which is tightly fitted via an O-ring 13 on the right side of the main body outer cylinder 1 via an O-ring 13. A tubular cover for storing a temperature control unit made of a heat-resistant synthetic resin material tightly fitted via an O-ring 15 on the left side in a front view, and 16 is a switching unit connected to the switching handle 8 and has a cylindrical shape. It is stored in the cover 12. A temperature control unit 17 is connected to the temperature control handle 11 and is housed in the cylindrical cover 14.

The above-mentioned tubular cover 12 has a shower switching port 19 (see FIG. 3) that is switchably connected to a shower supply port 18 formed on the back surface n of the main body outer cylinder 1, and a main body outer cylinder 1. A switching port 21 is formed so as to be switchably connected to a supply port 20 formed on the lower surface m. Further, the above-mentioned tubular cover 14 is provided with a hot water intake hole 60 constantly communicating with the hot water intake port 3.

Further, the switching unit 16 has therein:
A movable ceramic disk 23 and a fixed ceramic disk 24 that rotate together with the switching handle shaft 22 are housed, and the movable disk 23 is rotated by rotating the switching handle 8, and the movable disk 23 and the fixed disk 24 are rotated.
The supply of water or mixed water to the supply port 20 of the main body outer cylinder 1 or the shower supply port 18 provided immediately after the supply port 20 by aligning the long holes (not shown) provided in Stop can be operated.

Reference numeral 27 denotes a water supply side passage (indicated by a dotted arrow).
Then, water from the water connection port 5 formed on the back surface of the main body outer cylinder 1 passes through the outer periphery of the cylindrical covers 12, 14, that is, between the main body outer cylinder 1 and the cylindrical covers 12, 14.
Is formed so as to reach the inside of the temperature control unit 17 through a water introduction port 51 and a gap (not shown) formed in the temperature control unit 17.
On the other hand, reference numeral 28 denotes a hot water supply side passage (indicated by a solid arrow), which extends from the hot water inlet 3 to the hot water inlet 60 and a gap (not shown).
Through the temperature control unit 17 and merges with the water supply side passage.

The temperature control handle 11 is attached to the outer casing 1 of the main body.
Body 29 screwed to the end of the cylinder cover 14 and the cylindrical cover 14
And is spline-coupled to the base of a slide guide 31 screwed on the inner peripheral surface of the temperature control unit upper main body 30 provided inside the ring body 29. By rotating the temperature control handle 11, the slide guide 31 is moved forward and backward, and the gap between the water supply side passage 27 and the hot water supply side passage 28 is set. For example, when the temperature control handle 11 is turned to the hot water side to obtain the mixed water, the gap of the hot water supply side passage 28 is set to be larger than the gap of the water supply side passage 27. When the temperature control handle 11 is turned all the way to the water side in order to obtain only cold water, only the gap of the water supply side passage 27 is formed, and the gap of the hot water supply side passage 28 is not formed. Mixing of hot and cold water is performed immediately downstream of the temperature control unit 17 in the cylindrical cover 14 made of a heat-resistant synthetic resin material.

The temperature control unit 17 includes a thermoelement 25 containing thermowax and a piston 26. For example, as described above, when the temperature control handle 11 is turned to the hot water side, the gap of the hot water supply side passage 28 is set to be larger than the gap of the water supply side passage 27. When the temperature rises further, the thermo element 25 senses the temperature, the thermo wax expands and pushes the piston 26, the gap of the water supply side passage 27 widens, and the thermo valve body 32 narrows the gap of the hot water supply side passage 28. Have been. Therefore, the temperature of the mixed water decreases, and the temperature can be adjusted to approximately the set temperature.

The connection between the end of the switching unit 16 and the end of the temperature control unit 17 inside the main body outer cylinder 1 is made outside the end opening 80 of the cylindrical cover 14 opposite to the temperature control handle 11. This is performed by fitting the packing 61 provided in the groove 61 into an annular groove 84 provided in an end opening 83 of the cylindrical cover 12 opposite to the switching handle 8.

Further, in FIG. 3, water from the shower supply port 18 provided on the back of the main body outer cylinder 1 or mixed water at a predetermined temperature is showered through a shower intake socket 42 fitted in the communication box 41. To the discharge port 10 for use.
Further, water from a supply port 20 provided in the main body outer cylinder 1 or mixed water at a predetermined temperature is sent to a discharge port 9. It is mounted on a socket 91 fitted on the discharge pipe 50. Further, hot water from the connection pipe 6 is sent to the hot water inlet 3. 40a, 40
b and 40c are seal packings.

Reference numeral 55 denotes a discharge port which communicates with the water supply side passage 27. The discharge port 55 is provided at the lower surface m of the main body outer cylinder 1, specifically, the temperature control handle 11 with respect to the supply port 20 formed at the lower surface m of the main body outer cylinder 1. On the side, it is formed at a position corresponding to the position of the thermoelement 25.

The discharge port 55 is provided with a low-temperature operating valve 56 for draining water. The low-temperature operation valve 56 is constituted by an automatic opening / closing valve that senses when the water temperature becomes lower than a set temperature (for example, 4.5 ° C. or lower) and opens the discharge port 55.

Hereinafter, the low-temperature operation valve 56 for draining water will be described. In FIG. 4, reference numeral 57 denotes a thermo-element having a built-in thermo-wax. When the water temperature rises above the set temperature, the thermo-element 57 senses the temperature and the thermo-wax expands to push out the piston 58 [FIG.
(See FIG. 5A.) On the other hand, when the water temperature falls below the set temperature, the thermo element 57 senses the temperature, the thermowax contracts, and the piston 58 contracts (see FIG. 5B). Reference numeral 57a denotes a rubber packing provided on the upper end of the thermoelement 57 at a position opposite to the piston 58. Reference numeral 57b denotes a large-diameter thermoelement body located substantially at the center of the thermoelement 57.

Reference numeral 59 denotes a case for accommodating the thermoelement 57, which comprises a large-diameter cylindrical portion 70 and a small-diameter cylindrical portion 71. The large-diameter cylindrical portion 70 includes a lower portion 70a extending from the small-diameter cylindrical portion 71, and an upper portion 70b having a screw at a lower end outer periphery that is screwed to a screw formed on the inner periphery of the lower portion 70a. The discharge port 55 is provided on the outer periphery of the upper end of the upper portion 70b.
The screw which is screwed to the screw formed on the inner circumference of the. The case 59 is attached to the outlet 55 via a seal packing 72.

Further, a plurality of lateral holes 73 are formed in the upper portion 70b. When the discharge port 55 is opened as shown in FIG. Drainage of 27 is performed.

Numeral 74 denotes a disk fitted into the small diameter portion 58a of the piston 58 of the thermoelement 57, which can slide up and down along the inner peripheral surface of the small diameter cylindrical portion 71. The disk 74 is always kept on the upper side (the piston 5) by an elastic body 75 interposed between the disk lower surface 74a and the small-diameter cylindrical portion bottom surface k.
8).

Reference numeral 76 denotes a contact portion of the circular plate 74, which is formed by a ring body fitted in a groove formed at a position of a predetermined height L on the inner peripheral surface of the small diameter cylindrical portion 71.

Reference numeral 77 denotes an elastic body interposed between the flange portion f of the thermo-element body 57b and the ceiling projecting portion 78 of the lateral hole 73 so as to always urge the thermo-element 57 downward (toward the elastic body 75). Works. The strength of the elastic body 77 is set to be weaker than that of the elastic body 75.

Reference numeral 100 in FIG. 2 denotes a manual valve conventionally used for draining water from the water supply side passage.
5 and an attachment portion 10
When the outside air temperature is lowered at night, such as in a cold region, and it is considered necessary to drain the water, a drain port formed on the back surface of the main body outer cylinder 1 is formed. The main body plug provided on the upstream, for example, the crank-shaped connecting pipe 7 is pre-tightened and the screw 102 is loosened so that water in the water supply side passage passes through the gap from the discharge port 55, and It was discharged from the through hole 103 formed at the center position in the vertical direction.

In the present invention, when the outside air temperature is lowered at nighttime in a cold region and the like, and it is considered necessary to drain the water, the water drainage inlet 5 formed on the back surface of the main body outer cylinder 1.
It is necessary to previously tighten a main body plug provided upstream of the main body, for example, provided in a crank-shaped connecting pipe 7. Thus, FIG.
As shown in the figure, the water temperature is the set temperature (for example, 4.5 ° C.)
If it is higher than this, the thermo element 57 senses the temperature and the thermo wax expands to push the piston 58. At this time, the disk 74 descends by a length corresponding to the pushing length of the piston 58 while resisting the urging force of the elastic body 75. On the other hand, the discharge port 55 is in a state of being closed by the rubber packing 57a by the action of the elastic bodies 75 and 77.

When the water temperature becomes lower than the set temperature (for example, 4.5 ° C.), the thermo element 57 senses the temperature,
The thermowax contracts and the piston 58 contracts (FIG. 5).
(B)). In this case, the disk 74 rises and stops at the contact portion 76.

Therefore, as shown in FIG. 5C, the rubber element 57a is separated from the discharge port 55 by the action of the elastic body 77, and the thermo-element 57 is lowered.
Is opened. That is, the water in the water supply side passage 27 is automatically drained from the water outlet 55 through the lateral hole 73 through the discharge port 55.

Further, in the thermo-horizontal mixer tap having the above structure,
First, after operating the right switching handle 8 to switch to the discharge port 9 or the shower discharge port 10 and select supply / stop, the temperature of the mixed water may be set by operating the temperature control handle 11. In addition to being extremely operable, the mixing of hot and cold water is performed immediately downstream of the temperature control unit 17 in the cylindrical cover 14 made of a heat-resistant synthetic resin material. Since the tube 1 does not become so hot, there is no risk of burns.

In this embodiment, the switching unit 1
6 and an end of the temperature control unit 17 are detachably connected inside the outer casing 1 of the main body, and the cylindrical covers 12, 1 for accommodating the respective units 16, 17 are used.
Although the one provided with 4 separately is used, an integrated one composed of both units in a connected state covered by one cylindrical cover may be used.

[0031]

As described above, according to the hot and cold water mixing tap of the present invention, a discharge port for discharging water from the water supply side passage to the outside is provided on the lower surface of the main body outer cylinder. When the temperature is lower than a predetermined temperature, a low-temperature operation valve for draining which detects the temperature and opens the discharge port is provided, so that when the water temperature becomes low, the discharge port can be automatically opened and water can be drained, and the water temperature can be reduced. If it is low, it is possible to solve the conventional problem that it is necessary to manually perform the draining operation or if the draining operation is forgotten, the mixing tap is broken due to freezing of the water supply side passage.

[Brief description of the drawings]

FIG. 1 is a cross-sectional plan view showing an embodiment of a hot and cold water mixing tap according to the present invention.

FIG. 2 is a front view of the hot and cold water mixing tap in the embodiment.

FIG. 3 is an exploded perspective view in the embodiment.

FIG. 4 is a cross-sectional view of the low-temperature operation valve in the embodiment.

FIG. 5 is a view for explaining an operation of drainage in the embodiment.

[Explanation of symbols]

1 ... outer cylinder of the main body, 3, 5 ... connection port, 8 ... switching handle, 1
DESCRIPTION OF SYMBOLS 1 ... Temperature control handle, 12, 14 ... Cylindrical cover, 16 ... Switching unit, 17 ... Temperature control unit, 27 ... Water supply side passage,
28: hot water supply side passage, 51: water inlet, 55: outlet, 5
6 ... low temperature actuated valve, m ... lower surface of main body outer cylinder.

Claims (1)

[Claims] A metal outer cylinder having a hot water connection port connected to a hot water supply path, a water connection port connected to a water supply path, and a discharge port of water or mixed water is provided. At one end of the main body outer cylinder, a switching handle for switching between a discharge state of water or temperature-controlled mixed water and a water stop state is provided, and at the other end of the main body outer cylinder, a temperature for adjusting the temperature of the mixed water is provided. A tubular cover made of a heat-resistant synthetic resin material that accommodates a switching unit connectable to the switching handle and a temperature control unit connectable to the temperature regulating handle in the outer casing of the main body. Was further charged, and the water from the water connection port was formed so as to reach the inside of the temperature control unit through the water inlet formed in the cylindrical cover through the space between the main body outer cylinder and the cylindrical cover. The hot water from the water supply side passage and the hot water connection port A hot water mixer tap having a hot water supply passage formed to extend from the hot water inlet formed in the cover to the inside of the temperature control unit, and a discharge port for discharging water in the water supply side passage to the outside is provided in the outer casing of the main body. And a low-temperature valve for draining the water, which detects when the temperature of the water falls below a predetermined temperature, and opens the water discharge port.