JP2001207494A - Faucet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a faucet which resists water pressure and a water hammer phenomenon, prevents burns on the user by suppressing heating of the surface thereof, due to passage of hot water in spite of the simple structure thereof, and prevents freezing of the interior thereof in cold seasons. SOLUTION: A part or the entire of a faucet body 1 forming a passage of fluid is made of a resin, which has a thermal conductivity of 10 W/m.K or louver, a deflection temperature under load of 0.46 MPa is 100 deg.C or larger, which is measured in conformity with ASTM D648 Standard tensile strength of 100 MPa or larger, which is measured in conformity with ASTM D638 Standard, and notched Izod impact strength of 90 J/m or lager, which is measured in conformity with ASTM D256 Standard.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a bathroom, a kitchen,
TECHNICAL FIELD The present invention relates to a faucet used in a washroom or the like, which relates to a faucet in which heating by passing hot water or freezing of water or the like in a cold season is prevented.

[0002]

2. Description of the Related Art Water faucets used in bathrooms, kitchens, lavatories, and the like are generally made of metal to prevent breakage due to water pressure or water hammer when hot water or water passes therethrough. A plated metal surface is used to prevent corrosion. However, since metal has high thermal conductivity, the surface becomes hot when warm water is passed through, and a person who touches it may get burned. As a measure against burns, it has been proposed to cover the faucet with a cover or the like, but it has been a problem that the structure becomes complicated and the production becomes complicated.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned conventional problems, to withstand water pressure and water hammer phenomena, and to suppress surface heating due to the passage of warm water while having a simple structure, and to prevent burns. Another object of the present invention is to provide a water faucet which can prevent freezing inside the water faucet in a cold season in addition to preventing water faucet.

[0004]

According to the present invention, there is provided a faucet for opening and closing a passage for a fluid such as hot water, water, steam, or a heat medium. A part or the whole of the main body has a heat conductivity of 10 W / m · K or less and is 0.46 MP, which is performed according to ASTM D648.
a) Deflection temperature under load is 100 ° C or higher, ASTM D63
Tensile strength of 100MPa or more and AS
It is characterized by being molded from a resin having a notched Izod impact strength of 90 J / m or more performed according to TM D256.

That is, by using a resin having a thermal conductivity of 10 W / m · K or less, the faucet surface is heated by the heat of warm water passing through the faucet, and the outside air temperature in the cold season is lowered. It is possible to suppress the phenomenon that water retained in the faucet freezes. It is effective to use a resin having a thermal conductivity of 10 W / m · K or less not only for the entire faucet body forming the fluid passage, but also for selectively using the part in contact with the fluid.

Further, by using a resin having a deflection temperature under load of 100 ° C. or more, the deformation of the faucet and a sharp decrease in strength due to hot water are prevented, the tensile strength is 100 MPa or more, and the notched Izod impact strength is 90 J / cm 2. By using a resin of m or more, breakage of the faucet due to water pressure or water hammer is prevented.

[0007]

1 to 3 exemplify a water faucet according to an embodiment of the present invention. In the figure, a faucet of the present embodiment includes a resin faucet main body 1 forming a passage composed of a supply passage 1a and a drainage passage 1b, a valve 2 capable of closing the passage, and a faucet main body. A handle 3 for rotating the rotating shaft 2a of the valve 2 is provided, and a seal ring 4 for sealing the space between the rotating shaft 2a and the faucet body 1 in a liquid-tight manner.

In the faucet, fluids such as hot water, water, steam, and heat medium are supplied from a supply channel 1a and drained from a drain channel 1b according to a flow rate controlled by opening and closing the valve 4. In addition to the above embodiment, the present invention also includes a faucet with a function of mixing hot water and water and adjusting the temperature to an arbitrary temperature, a faucet with a shower, a faucet in which a valve for controlling the amount of water is a cock type, and the like. Can be mentioned as a faucet.

The faucet of the present invention can be prepared by a conventional resin molding method such as injection molding, extrusion molding or blow molding, and various processing methods such as vibration fusion, ultrasonic fusion, heat fusion and laser fusion. It can be produced by a combination. For example, in the case of the above embodiment, as shown in FIG. 1, the faucet main body 1 is formed as divided portions X and Y divided by dividing lines indicated by broken lines, and then the valve 2 and the seal ring 4 are assembled. The divisions X and Y may be fused together.

The resin used in the present invention has a thermal conductivity of 10 W / m · K or less, a deflection temperature under load of 0.46 MPa in accordance with ASTM D648, 100 ° C. or more, and a tensile strength in accordance with ASTM D638. Strength 1
The resin is not particularly limited as long as it is a resin having a notched Izod impact strength of not less than 90 MPa and not less than 90 J / m according to ASTM D256, and a known resin can be used. Examples of such a resin include polyamide resin, polyacetal resin, polycarbonate resin, modified polyphenylene ether resin, polybutylene terephthalate resin, polyethylene terephthalate resin, and polyphenylene sulfide resin. Among them, chemical resistance to impurities contained in warm water or steam, when considering hydrolysis by warm water, polyacetal resin, modified polyphenylene ether resin,
Polyphenylene sulfide resin can be said to be preferable, and among these, polyphenylene sulfide resin is preferable in terms of heat resistance and chemical resistance.

[0011] Among these resins, those having particularly large deflection temperature under load, tensile strength and notched Izod impact strength are recommended. ASTM D648
The deflection temperature under load of 0.46 MPa performed according to
The temperature is preferably 110 ° C. or higher, and the upper limit is 30 ° C.
0 ° C. The tensile strength performed in accordance with ASTM D638 is preferably 120 MPa or more, and the upper limit is 500 MPa. Notched Izod impact strength in accordance with ASTM D256 is 110
J / m or more, and the upper limit is 800
J / m or more. The lower limit of the thermal conductivity is 0.05
W / m · K.

The resin used in the present invention may contain an appropriate filler as long as the effects of the present invention are not impaired. Examples of such a filler include glass fiber, carbon fiber, potassium titanate whisker, zinc oxide whisker, aluminum borate whisker, aramid fiber, alumina fiber, silicon carbide fiber, ceramic fiber, asbestos fiber, stone fiber, metal fiber and the like. Fibrous filler, walasteinite, zeolite, sericite, kaolin, mica, clay, pyrophyllite, bentonite, asbestos, talc,
Metal compounds such as silicates such as alumina silicate, alumina, silicon oxide, magnesium oxide, zirconium oxide, titanium oxide and iron oxide; carbonates such as calcium carbonate, magnesium carbonate and dolomite; sulfates such as calcium sulfate and barium sulfate; Magnesium hydroxide,
Non-fibrous fillers such as calcium hydroxide, hydroxides such as aluminum hydroxide, glass beads, ceramic beads, boron nitride, silicon carbide and silica;
These may be hollow, and it is also possible to use two or more of these fillers in combination. In addition, it is possible to use these fibrous fillers or non-fibrous fillers after pretreatment with a coupling agent such as an isocyanate compound, an organic silane compound, an organic titanate compound, an organic borane compound, or an epoxy compound. It is preferable from the viewpoint of obtaining more excellent mechanical strength.

Further, the resins used in the present invention include nucleating agents such as talc, kaolin, organic phosphorus compounds, polyetheretherketone, coloring inhibitors such as hypophosphite, hindered phenols and hindered amines. Additives such as antioxidants, heat stabilizers, lubricants, UV inhibitors, coloring agents, and antistatic agents can be added.

[0014]

EXAMPLE Using a polyphenylene sulfide resin ("TORELINA" A673M: manufactured by Toray Industries, Inc.), the divided portions X and Y of the faucet main body 1 shown in FIG. In a state in which No. 4 was assembled, the divided portions X and Y were integrated by ultrasonic fusion to produce a faucet. The polyphenylene sulfide resin is A673.
M has a thermal conductivity of 0.35 W / m · K, ASTM D64
The deflection temperature under load of 0.46 MPa performed according to No. 8 is 260 ° C., the tensile strength performed according to ASTM D638 is 150 MPa, and the notched Izod impact strength performed according to ASTM D256 is 170 J / m.

The faucet was connected to a pipe equipped with a gas water heater, and hot water at a temperature of 85 ° C. was flowed in an atmosphere at an outside air temperature of 20 ° C. The faucet surface temperature was 32 ° C. after 60 minutes. Further, the valve was opened and closed 1000 times while the faucet was connected to the pipe, but no breakage of the faucet was observed, and it was confirmed that the faucet was sufficiently resistant to the internal pressure and the water hammer phenomenon.

[0016]

As described above, according to the present invention, part or all of the faucet main body forming the fluid passage is formed from resin, and the physical properties of the resin are specified. In addition to being able to withstand heat, while having a simple structure, it is possible to prevent surface burn due to the passage of warm water and prevent burns, and also to prevent freezing inside the faucet during the cold season.

[Brief description of the drawings]

FIG. 1 is a front view showing a faucet according to an embodiment of the present invention.

FIG. 2 is a side view showing the faucet according to the embodiment of the present invention.

FIG. 3 is a sectional view taken along the line AA of FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Faucet main body 1a Supply path 1b Drainage path 2 Valve 2a Valve rotation axis 3 Handle 4 Seal ring X, Y Dividing part of faucet main body

Claims (3)

[Claims] In a faucet for opening and closing a fluid passage, a part or the whole of a faucet body forming the fluid passage is performed according to ASTM D648 with a heat conductivity of 10 W / m · K or less. The deflection temperature under load of 0.46 MPa is 100.
A water faucet characterized by being molded from a resin having a tensile strength of 100 MPa or more and a notched Izod impact strength of 90 J / m or more, which is performed in accordance with ASTM D256, in accordance with ASTM D638. 2. The faucet according to claim 1, wherein at least a portion of said faucet body which is in contact with a fluid is molded from said resin. 3. The faucet according to claim 1, wherein the resin is a polyphenylene sulfide resin.