JP2015070935A - Shower head and shower device having the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a shower head that efficiently mixes air with discharged water, and increases the force of a shower while maintaining or reducing an amount of water used.SOLUTION: The shower head includes: a grip part 6a having one end connected with a water pipe through which water flows; a tip part 6b arranged at the other end of the grip part 6a; a shower plate 8 which is arranged at the tip part 6b and from which water is discharged; and an ejector 7 which is stored in a space formed by the tip part 6b and the shower plate 8, which has an air intake passage 12a, and through which ambient air flows and mixes ambient air with the water discharged from the shower plate 8. Since an air intake port 12 which introduces ambient air to the air intake passage 12a is provided to the tip part 6b, the air intake port 12 and the ejector 7 are arranged close to each other. Thereby, flow passage resistance in the air intake passage 12a is reduced with a simple configuration, and air is efficiently mixed with water so that the force of a shower can be increased while maintaining or reducing an amount of water used.

Description

  The present invention relates to a shower device, and more particularly to a shower head that discharges water mixed with air.

  As a conventional shower head for discharging water mixed with air, an ejector and an intake port are arranged in the vicinity of a connecting portion between the shower head and the water pipe (see, for example, Patent Document 1), a shower head and a hose (passage). An ejector is disposed in the vicinity of the connection portion of the water pipe), and the intake port is disposed closer to the distal end side of the shower head than the ejector (see, for example, Patent Document 2). A plurality of ejectors are arranged on the shower plate, and a shower plate is provided with an air inlet (see Patent Document 3).

JP 2002-119435 A JP 2006-239106 A JP 2007-56559 A

  However, in the shower head having the configuration of Patent Document 1, an ejector and an intake port are disposed in the vicinity of the connection portion between the shower head and the water pipe. Therefore, when the shower is stopped, there is a problem that water remaining in the shower head may leak from the intake port.

  Moreover, in the shower head of the structure of patent document 2, an ejector is arrange | positioned in the connection part vicinity of a shower head and a water flow pipe, and an inlet port is arrange | positioned rather than the ejector at the front end side of the shower head. Therefore, the flow path of the air to the ejector becomes longer, the flow resistance increases, the intake becomes insufficient, and the configuration of the shower head becomes complicated, so the handle becomes thicker and the weight increases. As a result, there is a problem that comfort is impaired.

  Moreover, in the shower head of the structure of patent document 3, several ejectors are arrange | positioned just before a shower plate with respect to the flow direction of water, and the inlet port is provided in the shower plate. Therefore, the configuration around the shower plate becomes complicated, and the weight increases.In addition, since the water is distributed to a plurality of ejectors, the intake is not sufficiently performed under a low flow rate, and the amount of water used is maintained or maintained. However, it is difficult to increase the momentum of the shower while improving the comfort.

  The present invention is to solve the above-described conventional problems, and is a shower head capable of increasing the momentum of a shower while efficiently mixing air into discharged water and maintaining or reducing the amount of water used. An object is to provide a shower device.

In order to solve the conventional problem, a shower head according to the present invention includes a gripping portion to which a water flow pipe through which water flows is connected at one end, a tip portion disposed at the other end of the gripping portion, and the tip portion. Is disposed in a space formed by a shower plate from which water is discharged, the tip and the shower plate, has an intake passage through which outside air flows, and the outside air flows into the water discharged from the shower plate. And an intake port for introducing outside air into the intake passage is provided at the distal end portion.

  As a result, the intake port and the ejector are arranged close to each other, and the flow resistance in the intake passage can be reduced with a simple configuration, so that air can be efficiently mixed into the water.

  According to the present invention, there is provided a shower head capable of increasing the momentum of a shower while maintaining or reducing the amount of water to be used with a simple configuration by efficiently mixing air into water discharged from the shower head. Can be provided.

Schematic configuration diagram of a shower head and a shower device in Embodiment 1 of the present invention Sectional drawing which shows schematic structure of the ejector in Embodiment 1 of this invention Schematic configuration diagram of a shower plate in Embodiment 1 of the present invention The graph which shows the relationship between the shower flow volume and air flow volume in Embodiment 1 of this invention. The figure showing the graph measurement result which shows the relationship between the shower flow volume and bodily sensation flow volume in Embodiment 1 of this invention.

  A first aspect of the present invention is a gripping portion to which a water flow pipe through which water flows is connected at one end, a tip portion disposed at the other end of the gripping portion, and a shower disposed at the tip portion to discharge water. A plate, and an ejector that is housed in a space formed by the tip portion and the shower plate, has an intake passage through which outside air flows, and mixes outside air into water discharged from the shower plate. The shower head is characterized in that an air inlet for introducing outside air into the road is provided at the tip.

  As a result, the intake port and the ejector are arranged close to each other. Therefore, the flow resistance in the intake passage can be reduced with a simple configuration, air can be mixed efficiently into the water, and the momentum of the shower can be increased while maintaining or reducing the amount of water used.

  The second invention is characterized in that, in the first invention, in particular, a check mechanism for preventing a flow of water is provided in the intake passage.

  Accordingly, it is possible to prevent the water flowing through the ejector from flowing out into the intake passage, so that the water is prevented from leaking from the intake port even when the shower plate is covered with a hand.

  The third invention is characterized in that, in the first or second invention, the entire amount of water discharged from the shower plate is configured to allow the ejector to pass through.

  Thereby, even when the flow rate of water is small, air can be efficiently mixed into the water by the ejector, and the momentum of the shower can be increased while maintaining or reducing the amount of water used.

  In a fourth aspect of the invention, in particular, in any one of the first to third aspects of the invention, the shower plate has a plurality of holes through which water is discharged, and the hole has at least one first hole. And a plurality of second holes having a diameter smaller than that of the first hole.

  Thereby, even when the flow rate of water is small, more water flows out from one second hole from the first hole having a relatively large diameter. Therefore, a constant amount of water discharged from the shower plate can be ensured. Accordingly, air is efficiently mixed into the water by the ejector while maintaining or reducing the amount of water used. Can also increase the momentum of the shower.

  5th invention is a shower apparatus provided with the shower head and heat-source machine of any one of 1st-4th invention especially.

  Thereby, the shower apparatus excellent in the comfort of the user that can increase the momentum of the shower while maintaining or reducing the amount of water to be used can be provided.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
FIG. 1 is a schematic configuration diagram of a shower device in the present embodiment, FIG. 2 is a cross-sectional view illustrating a schematic configuration of an ejector in the present embodiment, and FIG. 3 is a schematic configuration diagram of a shower plate in the present embodiment. is there.

  First, the configuration of the shower apparatus according to the first embodiment will be described with reference to FIGS. 1, 2, and 3.

  As shown in FIG. 1, a shower apparatus 100 according to the present embodiment includes a heat source device 1 that heats water, a shower head 5 that discharges water, and a shower as a water pipe that connects the heat source device 1 and the shower head 5. Hose 4.

  The heat source unit 1 includes a water supply pipe 2 having an electric heater 1a as a heat source and provided with a water supply valve 2a. The water supplied from the water supply pipe 2 to the heat source unit 1 is heated to a predetermined temperature by the heater 1 a and flows out from the hot water discharge pipe 3.

  The outlet pipe 3 of the heat source unit 1 and the shower head 5 are connected by a shower hose 4. The shower head 5 has a shower hose 4 connected to one end, and a tip disposed at the end of the gripping portion 6a opposite to the side to which the shower hose 4 is connected, and a gripping portion 6a that is mainly gripped by the user. A main body 6 is provided integrally with the portion 6b.

  The shower head 5 includes a shower plate 8 that is disposed at the distal end portion 6b and serves as an outlet from which water is discharged, and an ejector 7 that is disposed in a space formed by the shower plate 8 and the distal end portion 6b.

  As shown in FIG. 2, the ejector 7 has a swivel portion 9 in which the flow of water swirls, a nozzle 10 formed so that the cross-sectional area decreases toward the downstream side, generates negative pressure, and mixes water and air. The diffuser 11 is arranged in this order from upstream to downstream with respect to the flow direction of water. The ejector 7 includes an intake port 12 and an intake passage 12a for sucking air. The intake passage 12 a is connected to the swivel unit 9 of the diffuser 11. Further, a check mechanism 13 is provided in the intake passage 12a.

As shown in FIG. 2, the check mechanism 13 is disposed in the vicinity of the connection portion between the nozzle 10 and the diffuser 11 in the intake passage 12 a. As the check mechanism 13, a ball check valve (ball
check valve), but other parts having a check function (such as a check valve and a duckbill) may be used. The check mechanism 13 can prevent the hot water from flowing into the intake port and leaking when the user presses the shower plate 8 with his hand during the shower.

  As shown in FIG. 3, the shower plate 8 has one central hole (first hole) 14 and a plurality of peripheral holes (second holes) 15. Here, the diameter of the center hole 14 is formed larger than the diameter of the peripheral hole 15.

  About the shower apparatus comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  When using the shower apparatus according to the present embodiment shown in FIG. 1, first, in the heat source unit 1, the water supply valve 2 a connected to the water supply side is opened to supply water to the heat source unit 1. Next, after the water is heated by the heater 1 a to obtain hot water having a predetermined temperature, the hot water is discharged from the hot water discharge pipe 3. The heat source device 1 and the grip portion 6 a of the shower head 5 are connected by a shower hose 4. The hot water flowing into the shower head 5 from the shower hose flows through the water passage formed inside the main body 6, then flows through the ejector 7, and passes through the central hole 14 and the peripheral hole 15 opened in the shower plate 8. And discharged to the outside.

  In addition, since the water supply valve 2a is provided in the water supply pipe 2 instead of the hot water discharge pipe 3, the water pressure on the downstream side and the upstream side of the ejector 7 can be stabilized.

  Next, a mechanism in which air is mixed into the hot water when the hot water passes through the ejector 7 will be described with reference to FIG.

  The hot water supplied from the heat source device 1 becomes a rotating flow (swirl flow) in the swivel unit 9, and the flow velocity increases. Furthermore, it flows through the nozzle 10 having a tapered shape in which the cross-sectional area of the flow path decreases toward the downstream side, and the flow velocity further increases. When the tip of the nozzle 10 is reached, a negative pressure is generated due to the nature of the fluid (derived from the Venturi effect and Bernoulli's theorem). Due to the negative pressure, air is sucked from the intake port 12, air flows through the intake passage 12 a, and air is mixed into the hot water flowing through the ejector 7. The mixture of warm water and air flows toward the shower plate 8 through the diffuser 11 having a tapered shape in which the cross-sectional area of the flow path increases toward the downstream side, and is discharged from the shower plate 8 to the outside.

  Next, the mechanism of water saving and power saving by mixing air with warm water will be described with reference to FIG. 4 and FIG. FIG. 4 is a graph showing the relationship between the shower flow rate (water flow rate) and the air flow rate (air mixing amount). As shown in FIG. 4, when the shower flow rate increases, the air flow rate also tends to increase. FIG. 5 is a graph showing the relationship between the shower flow rate and the sensation shower flow rate (the flow rate felt by the user). By mixing water and air, the shower flow rate and the air flow rate are added together. It can be seen that the volume of the shower actually felt increases.

  For example, with a shower flow rate of about 2.5 L / min indicated by an arrow, the shower flow rate (experienced shower flow rate) to be realized is 3 L / min. Thus, since a high experience shower flow rate can be obtained even with a small shower flow rate, the amount of water to be used can be reduced, and the amount of water heated by the heat source can be reduced to improve energy saving.

  As described above, air can be efficiently mixed into the discharged water, and the momentum of the shower can be increased while maintaining or reducing the amount of water used, so that the comfort of the user can be improved without impairing the shower volume. It can improve and reduce water and electricity consumption.

  A check mechanism 13 is added. In FIG. 2, a check ball is used, but a component having a check mechanism (such as a check valve or a duckbill) can be substituted. This action has a role of preventing hot water from flowing into the air inlet and leaking out when the user presses the shower plate 8 with his hand during the shower bath.

  Moreover, the shower plate 8 in the present embodiment includes a plurality of peripheral holes 15 and one central hole 14 having a diameter larger than that of the peripheral holes 15 as shown in FIG. When air is mixed into the hot water by the ejector 7, if there is a large pressure loss after the hot water flows out from the diffuser 11, for example, a pressure loss caused by the shower plate 8, the pressure at the tip of the nozzle 10 decreases due to the influence. To do. As a result, the amount of intake air from the intake port 12 decreases.

  This pressure loss can be adjusted by the hole diameter of the shower plate 8, but if the diameter of the hole is simply increased, the amount of air mixed into the hot water is increased, while the hot water discharged from each hole is increased. The flow rate is lowered, and the user's comfort is reduced.

  Therefore, the shower plate 8 in the present embodiment is provided with a central hole 14 having a diameter larger than that of the peripheral hole 15 as shown in FIG. As a result, even when the flow rate of water is small, it is possible to achieve both a reduction in pressure loss and secure a flow rate, and it is possible to mix air efficiently into the water, while maintaining or reducing the amount of water used. Can be increased.

  As described above, the shower head in the present embodiment does not impair the shower volume, and even if the user covers the shower plate with his / her hand, the hot water does not leak from the intake port. And electricity consumption can be reduced.

  As described above, the shower head of the present invention can be applied as a shower device because air can be efficiently mixed into warm water and the momentum of the shower can be increased while maintaining or reducing the amount of water used. it can.

DESCRIPTION OF SYMBOLS 1 Heat source machine 1a Heater 2 Water supply pipe 2a Water supply valve 3 Hot water outlet pipe 4 Water flow pipe (shower hose)
DESCRIPTION OF SYMBOLS 5 Shower head 6 Main body 6a Grasp part 6b Tip part 7 Ejector 8 Shower plate 9 Turning part 10 Nozzle 11 Diffuser 12 Intake port 12a Intake path 13 Check mechanism 14 Center hole 15 Peripheral hole

Claims (5)

A gripping part to which a water flow pipe through which water flows is connected to one end;
A tip portion disposed at the other end of the gripping portion;
A shower plate disposed at the tip and from which water is discharged;
An intake passage that is accommodated in a space formed by the tip portion and the shower plate, has an intake passage through which outside air flows, and mixes outside air into water discharged from the shower plate;
A shower head, wherein an inlet for introducing outside air into the intake passage is provided at the tip. The shower head according to claim 1, wherein a check mechanism for preventing a flow of water is provided in the intake passage. 3. The shower head according to claim 1, wherein a total amount of water discharged from the shower plate is configured to allow water to flow through the ejector. 4. The shower plate has a plurality of holes through which water is discharged,
The said hole part has at least 1 1st hole and several 2nd hole smaller in diameter than the said 1st hole, The any one of Claims 1-3 characterized by the above-mentioned. Shower head described in. A heat source machine for heating water,
A shower apparatus provided with the water pipe which connects the said heat-source machine and the shower head of any one of Claims 1-4.