JP2002054198A - Hot-water/cold water combination faucet device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hot-water/cold water combination faucet device that does not require material and structure such as metal capable of withstanding high pressure by allowing easy temperature control by controlling pressures on hot water side and water side and restricting pressure applied on the faucet device to a pressure not higher than a specified pressure. SOLUTION: The hot-water/cold water combination faucet has a mixing section having a cold water side inlet and a hot-water side inlet for mixing flows from the respective inlets, an on-off valve for shutting off fluid flowing in and a discharge port for discharging mixed fluid out of the device. A pressure regulating value capable of regulating pressure during flowing in a downstream side and pressure during shutting-off of water when the valve is closed at a specified value is provided in at least a cold water side water path of a hot water side water path in an upstream side of the mixing section and the cold water side water path.

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 faucet used in bathrooms, kitchens and washrooms.

[0002]

2. Description of the Related Art Tap water supplied to each household from a water pipe is connected to a water-side water channel used at the same temperature,
It is connected to a water heater, etc., and branches to a hot water side water passage used as hot water. The branched water-side water supply and the hot-water-side water supply are adjusted to an easy-to-use temperature by a hot-water mixing faucet and discharged. In the above-mentioned flow passage, particularly, the flow of water on the hot water side passing through the water heater receives a pressure loss due to the effect of the water heater, and the pressure balance between the hot water side and the water side is lost at the inflow port of the hot and cold water mixing faucet.

[0003] In a state in which the pressure balance of hot and cold water is lost, it is difficult to adjust the temperature to be easy to use with a hot and cold water mixing faucet.
A means for regulating the pressure is required. 2. Description of the Related Art A conventional hot and cold mixing faucet device generally has a flow control valve of a type that is manually operated on each of a hot water side and a water side of the faucet device.

In addition, pressure equalizing valves are arranged at the hot water inlet and the water inlet to adjust the pressure balance, and furthermore, pressure reducing valves are provided at the time of entering each household through a main pipe from a water main pipe. Then, there is a method of reducing the pressure to about 0.1 to 0.3 MPa.

[0005]

In a hot-water mixing faucet equipped with a flow control valve of the above-mentioned type which is manually operated, the type of tap water and the type of water heater in each household depends on the type.
It was necessary to adjust the pressure manually after installing the faucet.

[0006] In this type of faucet, when the on-off valve of the faucet is closed, the upstream side of the on-off valve is subjected to direct water pressure (primary pressure), and the water is supplied to the faucet main body and the connecting pipe. There is a need for strong structural parts that can withstand the pressure.

FIG. 5 shows the above-mentioned conventional hot and cold water mixing faucet, in which a hot water inlet and a flow rate adjusting mechanism (12) for manually adjusting the flow rate are arranged at the water side inlet and connected. Tube (1
3, 14, 15) are made of metal.

On the other hand, when the pressure balance valve is used, the pressure balance of the hot and cold water can be automatically adjusted. However, when the open / close valve of the faucet device is closed, the upstream side of the open / close valve becomes the direct water pressure (primary pressure). In other words, the faucet main body and the connecting pipe need to have strong structural parts capable of withstanding the primary pressure.

Further, in the method in which a pressure reducing valve is provided at the time when each household enters a household from a water main by a branch pipe, since the installation location is a water passage for all faucet appliances used at home, the discharge of each faucet appliance is performed. It is necessary to make the pressure reducing valve large enough to secure the amount of water, and it is expensive.In addition, since there is no filter installed on the upstream side of the pressure reducing valve, there is a possibility that the performance may not be able to be removed due to dust or clogging. Can be

Further, the pressure is reduced even for a faucet device that does not need to be decompressed, such as a faucet device used for storing water in a bathtub.

FIG. 6 is a schematic diagram of a conventional water supply pipe in each home as described above, in which a pressure reducing valve (h) is arranged at an inlet of a water supply in each home, and furthermore, a hot water side flow of a faucet device. The pressure equilibrium valve (i) is arranged at the inlet and the water side inlet.

SUMMARY OF THE INVENTION The present invention has been made to solve the problems caused by the above-mentioned conventional means, and can be adjusted to a pressure that can be easily used without manual adjustment. It is an object of the present invention to provide a new means at a low cost that does not require a strong structural part.

[0013]

In order to achieve the above-mentioned object, as set forth in claim 1, a water-side water passage on the upstream side of the water-water mixing section and a water-side water passage at least on the water-side passage side. And a pressure control valve capable of constantly controlling the pressure during the flow on the side and the pressure in the stop water when the on-off valve is closed is provided. .

In claim 1, "at least on the water side water passage side"
The reason is that if the water heater is a hot water storage type, usually the water heater itself is equipped with a pressure reducing valve, in this case,
Since the pressure control valve is unnecessary on the hot water side water channel side, the above object is achieved by installing a pressure control valve adjusted to have the same pressure as the pressure reducing valve of the water heater only on the water side water channel side. It is.

According to a second aspect of the present invention, the pressure control valve is disposed on the upstream side of the hot and cold water mixing section so as to prevent problems due to clogging of the pressure control valve and to facilitate replacement and repair in the event of a failure. Among them, the present invention provides a hot and cold water mixing faucet device which is arranged downstream of a water stopcock and a strainer.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be specifically described below with reference to the accompanying drawings. FIG. 1 is a schematic diagram of a water supply pipe in each household, and shows that a water heater (e) is arranged in a hot water side water passage (c) and mixed and used by a hot and cold water mixing faucet device (f). .

FIG. 2 is a view showing a hot and cold water mixing faucet apparatus according to the present invention, wherein a water stopcock (2) and a pressure control valve (1) are arranged on each of a hot water side and a water side. Downstream, a hot and cold water mixing section (5), an on-off valve section (7), a shower water discharge section (11),
A water discharge unit (10) is provided, each of which is connected by a flexible hose (4, 6, 8, 9). For example, when the primary pressure of the water supply is 0.3MPa, the inflow pressure on the hot water side receives a pressure loss from a water heater and drops to 0.2MPa, and when the pressure drops to 0.2MPa, the pressure control valve that can adjust the pressure to 0.1MPa is connected to the hot water side and the water side. By installing each of them, both the hot water side pressure and the water side pressure can be adjusted to 0.1 MPa, and the temperature can be easily adjusted with a faucet device.

Further, downstream of the pressure regulating valve which can regulate the pressure to 0.1 MPa, when the on-off valve is closed, not only the direct pressure of water but only 0.1 MPa is applied. There is no danger of breaking even with a flexible hose with low pressure resistance such as vinyl chloride or urethane instead of a pipe. Similarly, even if the main body is made of an inexpensive and highly moldable resin such as ABS resin, it will break. Without having to do so, the faucet can be supplied at lower cost.

FIG. 3 shows an example of the pressure control valve. The case (21) is formed in a pipe shape from a metal material. An opening (16) communicating with the primary side is opened at one shaft end side, and the opening (16) is communicated with the secondary side at the other shaft end. Opening (1
7) are open and have connecting portions (18, 19), respectively.

A pressure receiving body (20) that moves in the axial direction due to a change in pressure on the secondary side is fitted inside the case 21, and is urged to be pushed out to the secondary side by a spring (22). The valve body (23) is fitted on the primary front end (24) of the pressure receiving body so as to abut the pressure receiving body.

When the pressure on the secondary side increases, the pressure receiving member (2
0) is pushed into the primary side against the bias of the spring (22), the gap between the front end (24) of the pressure receiving body (20) and the valve body (23) is narrowed, and the secondary side pressure can be adjusted. This is done so that the pressure on the secondary side is kept constant. Further, when the pressure on the secondary side is going to further rise, the valve is completely closed, so that the pressure in the still water is also kept constant.

Here, the pressure regulating valve may have any structure other than that shown in FIG. 3 as long as it can achieve the above object.

FIG. 4 shows a piping diagram when the water heater is a hot water storage type. In this case, a pressure reducing valve (g) is arranged upstream of the hot water storage type water heater (e '). No pressure regulating valve is required on the hot water side of the faucet.

[0024]

According to the present invention, the following effects are exhibited by the above configuration. The present invention can be adjusted to an easy-to-use pressure without manual adjustment, and does not require rigid structural parts for faucet components.

[Brief description of the drawings]

FIG. 1 is a schematic view of pipes and faucets at home according to the present invention.

FIG. 2 is a partial sectional view of the faucet device according to the present invention.

FIG. 3 is a sectional view of a pressure control valve.

FIG. 4 is a schematic view of a pipe and a faucet device at home according to the present invention (in the case of a hot water storage type water heater).

FIG. 5 is a partial sectional view of a conventional faucet device.

FIG. 6 is a schematic diagram of a conventional household plumbing and faucet device.

[Explanation of symbols]

 a: Water supply valve of each household b: Branch c: Hot water channel d: Water water channel e: Water heater e ': Hot water type water heater f: Hot water mixing faucet g: Pressure reducing valve of hot water type water heater h: Pressure reducing valve i: Pressure balance valve 1: Pressure control valve 2: Water stopcock 3: Strainer 4: Flexible connection pipe (water stoppage to mixing unit) 5: Hot and cold water mixing unit 6: Flexible connection Pipe (mixing section to on-off valve section) 7: On-off valve section 8: Flexible connecting pipe (on-off valve section to shower water discharging section) 9: Flexible connecting pipe (on-off valve section to callan water discharging section) 10: Karan spouting section 11: Shower spouting section 12: Manual stoppage valve / manual flow control valve 13: Copper connecting pipe (water stop section to mixing section) 14: Copper connecting pipe (mixing section to open / close valve section) 15: Copper connecting pipe (opening / closing valve section to callan spouting section) 16: Primary opening 17: Secondary opening 18: Primary connection 1 : Secondary side connection portion 20: pressure receiving body 21: case 22: spring 23: valve body 24: front end of the pressure receiving member

Claims (2)

[Claims] 1. A mixing part having a water-side inlet and a hot-water-side inlet, for mixing a fluid flowing from each, an on-off valve for stopping and stopping the flowing fluid, and discharging the mixed fluid to the outside of the device. A hot-water mixing faucet device having a discharge port, wherein at least the hot-water flow path upstream of the hot-water mixing section and at least the water-side water flow path of the water-side water flow path, the downstream pressure during the flow, and the on-off valve A hot and cold water mixing faucet device comprising a pressure control valve capable of constantly adjusting a pressure in a still water when the water is closed. 2. The hot and cold water mixing faucet device according to claim 1, wherein the pressure control valve is disposed downstream of the water stopcock or the strainer.