JPH11287519A - Bath adapter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To agitate and suck sediment and suspended solids in a bathtub by a method wherein a circulation route for circulating through the inside of the bathtub is provided in parallel to another circulation route for circulating through inside and outside of the bathtub whereby a discharging flow rate is increased. SOLUTION: A bath adapter 1 is provided with an inside and outside of bathtub circulation route as a circulation route for circulating bathtub water and, in parallel thereto, an inside of bathtub circulation route constituted of a bathtub 2 → a suction passage 9 → a discharging pipe 11 → the bathtub 2, is provided. The circulation of bathtub water through the inside and outside of the bathtub is started when a circulation pump P in a hot-water supplier main body 4 is operated. In this case, an ejector effect is generated by the bathtub water discharged out of a nozzle 10 and the bathtub water in the suction passage 9 is sucked whereby the circulation in the bathtub is started. According to this constitution, when the inner diameter of the nozzle 10 and that of the discharging pipe 11 are designed so as to be the optimum size, the discharging flow rate of bathtub water, discharged out of the discharging pipe 11, can be increased to the degree of 2-4 times, for instance, whereby sediment and suspended solids in the bathtub 2 can be agitated and sucked.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bath adapter for circulating bath water into and out of a bathtub.

[0002]

2. Description of the Related Art Bathtub water after bathing contains dirt, cotton dust, hair, etc., and these precipitate on the bottom of the bathtub,
It floats in the water and on the water, causing discomfort to the next bather.

[0003] Therefore, conventionally, bathtub water is pulled out of the bathtub by a circulating pump, and is filtered by a filter provided in a bus adapter, a purification device, and a filtration function unit provided in a water heater with a reheating function, and again. The method of returning to a bathtub has been generally used.

[0004]

However, in order to circulate and remove the sediment and suspended matter in the bath tub, it is necessary to increase the circulation flow rate of the bath tub water and stir the inside of the bath tub.
When the conventional bus adapter is used, there are the following problems. The need for a large capacity pump increases the size of the pump and increases the cost. In order to increase the circulating flow rate, the piping connecting the equipment installed outside the bathtub to the bus adapter is restricted in terms of pressure loss in terms of piping diameter and piping extension conditions, and the degree of freedom in installation and construction is limited. Lower. In order to reduce the pressure loss, it is necessary to increase the diameter of the equipment installed outside the bathtub, which makes it difficult to route the piping inside the equipment. Further, it is difficult to make the device compact.

[0005] In particular, a water heater with a built-in purifier and having a reheating function has a drawback that the equipment becomes complicated for the following reasons.

The circulating flow required for reheating is several l / min.
In order to remove precipitates and suspended matter in the bathtub, a circulation flow rate of several tens of l / min is required. However, it is difficult to circulate bathtub water through the heat exchanger at a flow rate of several tens of l / min from the viewpoint of pressure loss and erosion.
Equipment is complicated because it is necessary to switch the circulating flow rate of the circulating pump or to reduce the circulating flow rate to the heat exchanger using a bypass pipe according to each operation mode of the purification operation and the reheating operation. Had become.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems. An object of the present invention is to increase the circulating flow rate, not by increasing the pumping capacity on the instrument side, but by using a bus adapter to improve the circulation rate. In order to increase the circulation flow rate, as a result, circulation (stirring) is performed only at several tens of l / min only in the bathtub,
An object of the present invention is to provide a bath adapter capable of sucking sediment and suspended matter in a bathtub.

[0008]

In order to achieve the above object, a first aspect of the present invention is to provide a bath adapter provided in a bathtub to circulate bathtub water into and out of the bathtub. In the circulation route of
Since the circulation path for circulating in the bathtub was provided, the discharge flow rate, which is the sum of the flow rate circulating in and out of the bathtub and the flow rate circulating in the bathtub, was greater than the flow rate circulating in and out of the bathtub, The sediment and suspended matter can be agitated and sucked into the bus adapter.

According to a second aspect of the present invention, the bathtub water passing through the circulation path in the bathtub provided in the bath adapter is circulated by the ejector effect from the bathtub water circulating in the circulation path inside and outside the bathtub. The discharge flow rate, which is the sum of the flow rate circulating through the bath and the flow rate circulating in the bath tub, can be increased, and the sediment or suspended matter in the bath tub can be agitated and sucked into the bath adapter.

[0010]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a configuration diagram in which a bus adapter according to an embodiment of the present invention is applied to a water heater with a reheating function built in a purification device.

The bath adapter 1 is attached to a bathtub 2 as shown in FIG.
Is connected to

Inside the bath adapter 1, a filter 12 for filtering bath water, a suction passage 9 for sucking bath water, a nozzle 10 for returning bath water circulated outside the bath to the bath 2 and a bath water. To the bathtub 2.

A circulating pump P for circulating bath water and a temperature sensor 5 for detecting the temperature of bath water are provided in the water heater main body 4. At the time of additional heating, the circulation pump P operates, water is supplied to the heat exchanger 7 by the three-way valve 6, and the bathtub water is heated by the heat exchanger 7 until the temperature detected by the temperature sensor 5 reaches the set temperature. .

At the time of purification, water is supplied to the purification device 8 by the three-way valve 6 to purify the bathtub water.

By providing the bath adapter 1, the circulation path through which the bathtub water circulates includes a bathtub 2 → suction passage 9 → water heater 4 → nozzle 10 → discharge pipe 11 → a bathtub inside / outside circulation path. , Bathtub 2 → suction passage 9 → discharge pipe 1
There are provided two paths, i.e., a circulation path in the bathtub composed of 1 → bathtub 2. The circulating pump P in the water heater main body 4 operates and the circulation of the bathtub water inside and outside the bathtub is started. At this time, the bathtub water discharged from the nozzle 10 produces an ejector effect, and the bathtub water in the suction passage 9 is sucked to start circulation in the bathtub.

The inner diameter of the nozzle 10 and the inner diameter of the discharge pipe 11 can be appropriately adjusted without increasing the capacity of the circulation pump P in the water heater main body 4 or increasing the diameter of the circulation pipe 3 and the circulation path inside and outside the bathtub. By doing so, the discharge flow rate discharged from the discharge pipe 11 can be set to about 2 to 4 times the circulation flow rate inside and outside the bathtub, so that sediment and suspended matter in the bathtub 2 are agitated and sucked, and the filter 12 Can be filtered.

FIG. 2 shows an example in which the inner diameter of the nozzle 10 is φ5.
mm shows the discharge flow rate with respect to the inner diameter of the discharge pipe 11 when the circulation flow rate inside and outside the bathtub is 5 l / min.

When the inner diameter of the discharge pipe 11 is changed, φ24
In the vicinity of mm, the discharge flow rate becomes 20 l / min, and the inside of the bathtub can be stirred at a flow rate four times the circulation flow rate inside and outside the bathtub. The inner diameter of the nozzle 10 and the inner diameter of the discharge pipe 11 may be selected in consideration of the capacity of the circulating pump P, the inner diameter and the extended length of the circulating pipe 3, and the combination that provides the required flow rate and momentum. If the tip of the discharge pipe 11 is gently widened, the discharge flow rate can be further obtained.

The length of the discharge pipe 11 may be about 5 to 6 times the inner diameter thereof. However, if there is an interval between the nozzle 10 and the discharge pipe 11, the length of the interval can be shortened. Also,
By making the shape of the nozzle 10 a shape of two nozzles or three nozzles, the length of the discharge pipe 11 can be further reduced, and the bus adapter 1 can be made more compact.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram to which a bus adapter according to an embodiment of the present invention is applied.

FIG. 2 is a graph showing a discharge flow rate of a bus adapter according to one embodiment of the present invention.

[Explanation of symbols]

 1: Bus adapter 2: Bathtub

Continued on the front page (72) Inventor Masayuki Kawamura 43-1, Uozakihama-cho, Higashi-Nada-ku, Kobe-shi, Hyogo

Claims (2)

[Claims] 1. A bath adapter provided in a bathtub for circulating bathtub water into and out of the bathtub, wherein a circulation route for circulating inside the bathtub is provided alongside a circulation route for circulating inside and outside the bathtub. A bus adapter. 2. A bathtub water passing through a circulation path in a bathtub provided in a bath adapter is circulated by an ejector effect from bathtub water circulating in a circulation path inside and outside the bathtub. Bus adapter.