JPH0522754Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a bathtub connection device for a water heater that supplies high-temperature water to heat the water stored in the bathtub.

(Prior art) As a conventional device of this type,
As seen in the above publication, there is a system that sucks the water stored in the bathtub from above when hot water is supplied, mixes the sucked water with high-temperature water using an ejector, and discharges the mixture from the bottom.

(Problem that the invention aims to solve) However, since the suction passage is mainly a passage directed downward from the top, all ejector connection piping and temperature detection sensors are installed from the rear side of the bathtub wall. A lot of space was needed to protrude from the wall.

This invention solves the above conventional problems,
In addition to saving space by reducing the space that protrudes from the rear of the bathtub wall, it also facilitates the connection of other accessories such as temperature detection sensors, and improves the ability to mix high-temperature water with stored water and reduce noise when discharging. The aim is to also improve

(Means for solving the problems) In order to achieve the above object, the present invention is configured as follows. That is, a suction port and a discharge port are arranged horizontally in parallel on the bathtub wall, and both openings are connected by an ejector passageway at the rear surface of the bathtub wall, and a discharge pipe is provided in the passageway for supplying high-temperature water in the axial direction of the passageway. is inserted into the bathtub, and a discharge passage is formed in the bathtub to direct the discharge flow downward.

(Function) When high temperature water is supplied from the water heater, it is discharged from the discharge pipe into the ejector passage. The water stored in the bathtub is sucked through the suction port by the suction force. At this time, since the water flow is on a horizontal plane, there is no resistance due to natural convection and the water is drawn in smoothly. While the high temperature water and the stored water are mixed in the ejector passage, the flow changes from parallel flow to the bathtub wall to cross flow, and heads toward the discharge port.
Then, it is ejected as a downward flow through the discharge passage within the bathtub.

(Embodiment) In the figure, reference numeral 1 denotes a bathtub wall, and a connecting device main body 2 is attached below. Reference numeral 3 denotes an adapter tube, which has a substantially U-shaped cross section, has a suction port 4 at one end, a discharge port 5 at the other end, and connects both openings with an ejector passage 6. The adapter pipe 3 is attached to the bathtub wall 1 so that both openings are arranged horizontally in parallel, and is tightened and fixed with a nut 7. Reference numeral 8 denotes a discharge pipe connected to a water heater (not shown) that supplies high-temperature water, and is inserted from the end of the ejector passage 6 on the suction port 4 side in the axial direction of the passage, and its tip generates an ejector effect. It is narrowed down to Reference numeral 9 indicates a pressure detection tube inserted into the ejector passage 6 from above, and reference numeral 10 indicates a temperature detector inserted from below, and the discharge pipe 8, pressure detection tube 9, and temperature detector 10 are all inserted parallel to one surface of the bathtub wall. It is something. Reference numeral 11 denotes a cover, which includes a discharge passage 12 that directs the discharge flow downward, and a suction passage 13 that directs the suction flow upward.
are formed, and are fixed with screws 15 to a fixing plate 14 which is fixed together with nuts 7. Both passages 12 and 13 are obliquely separated from each other as they go downward. 16 is Patsukin.

The operation of the above configuration will be explained. When the bathtub is empty, hot water at a set temperature is supplied from a water heater (not shown), and the hot water is filled through the discharge pipe 8 through the discharge port 5 and the discharge passage 12. When the water level reaches the set level, it is detected by a pressure detector (not shown) connected to the pressure detection tube 9.
Stop the hot water supply. If hot water that is lower than the set temperature is stored in the bathtub at a higher water level than the water level of the connecting device body 2, and you want to raise the temperature to the set temperature using high-temperature water, supply high-temperature water (e.g. 80℃) from the water heater. , and is discharged from the discharge pipe 8. As a result, the water stored in the ejector passage 6 is sucked. The sucked stored water flows in the ejector passage 6 parallel to the bathtub wall 1 while mixing with high-temperature water, and then flows in a direction perpendicular to the bathtub wall 1 toward the discharge port 5. The water then hits the cover 11, flows downward along the discharge passage 12, and is ejected into the bathtub. By bending the flow in this way, mixing is promoted, the water is discharged at a temperature that is not dangerous to the human body, and the temperature of the water in the bathtub is equalized above and below. On the other hand, the low-temperature hot water stored in the lower part of the bathtub is sucked through the suction passage 13 and guided to the ejector passage 6. However, this flow does not go against the natural circulation caused by temperature differences, and because there is no resistance, it flows extremely smoothly. Therefore, a sufficient amount of stored water can be secured to be sucked into the high-temperature water, and the dilution of the high-temperature water is facilitated, and the generation of water passing noise is reduced.

Next, the connection device main body 2, discharge pipe 8 and temperature sensor 1
0 and the pressure detection tube 9 will be described below. Since the connecting device main body 2 is attached to the bathtub wall 1 so that the ejector passage 6 is horizontal,
The discharge pipe 8 can be inserted parallel to the bathtub wall 1 (horizontally). That is, even if the adapter pipe 3 is close to the bathroom wall, the connection work can be carried out with hands.
Moreover, the temperature detector 10 and the pressure detection tube 9 can also be inserted parallel to the bathtub wall 1 (in the vertical direction). In this case, as long as there is a space where you can put your hand in, you can make connections without drilling holes in the wall or moving the bathtub.

(Effects of the invention) As described above, in the present invention, the suction port and the discharge port are arranged horizontally, and both openings are connected by an ejector passage on the rear surface of the bathtub wall, so the water flow direction is horizontal.
This improves the flow of the stored water that is sucked in, promoting mixing and reducing noise generation. Furthermore, when installing the device, it requires less space to protrude from the bathtub wall and can be accommodated within the bathtub apron, making effective use of bathroom space and making it easier to connect piping and accessories. It is.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention; FIG. 1 is a plan sectional view, FIG. 2 is a sectional view taken along line AA in FIG. 1, and FIG. 3 is a sectional view taken along line BB in FIG. 1. 1... Bathtub wall, 4... Suction port, 5... Discharge port,
6...Ejector passage, 8...Discharge pipe, 12...Discharge passage.

Claims (1)

[Scope of utility model registration request] An adapter pipe comprising a suction port for sucking bath water and a discharge port for discharging bath water, a cover for covering the suction port and the discharge port, and a discharge pipe inserted into the adapter pipe and connected to a water heater. , the adapter pipe has a substantially U-shaped cross section when viewed from above, and the long end is parallel to and horizontally installed on the bathtub wall surface, and the cover has a suction passage that directs the suction flow upward and a discharge channel that directs the discharge flow downward. The bathtub connection has a passageway, the suction passageway and the discharge passageway are constructed diagonally so as to separate from each other as they go downward, and the discharge pipe is inserted deep into the adapter pipe in the longitudinal axis direction. Device.