JPH1015316A - Hot water circulating apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a suction unit simple in structure, capable of reducing passage loss and not taking labor even at a time of washing by providing a projection part to a prefilter made of sponge to bring a casing into contact with the projection part to form a gap between prefilter and the casing. SOLUTION: A suction unit consists of a unit main body 11, a prefilter case 13, a prefilter 16 and a unit cover 18. The unit main body 11 has a rectangular outer shape and is a resin case having the opened front and predetermined depth and has the projections 14 fitted in the cavities of the prefilter case 13 provided to the insides of the left and right side surfaces thereof. The prefilter 16 is formed from sponge and projections 20 are provided on the side of the prefilter case 13 to mount the prefilter on the case 13. The recessed parts of the prefilter 16 between the projections 20 become gaps to reduce passage resistance of water. By this constitution, a large contaminant is removed by the prefilter and washing also becomes easy.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot water circulating apparatus provided with a purifying means for purifying bath water in a bath tub so as to keep the water constantly clean by performing a purifying treatment such as filtration. The present invention is applicable to a suction unit attached to a water suction pipe for sucking water.

[0002]

2. Description of the Related Art Conventionally, for example, bath water in a bathtub is sucked up by a circulation pump, filtered by a filtration device, and heated and heated by a heater.
Furthermore, it is sterilized with ozone and keeps the bath water constantly clean.
A hot water circulation device that enables bathing at any time of the day has been developed and widely used.

[0003] In the hot water circulation device, since large dirt such as hair is contained in bath water, the filter medium of the filtration device may be clogged in a short period of time or may be used in equipment such as a circulation pump and a water flow sensor. In order to prevent the hair from sticking and malfunctioning, it is preferable to attach a pre-filter for removing large dirt to the suction unit.

FIG. 4 shows a suction unit portion of a conventional hot water circulation device. A suction unit main body 111 made of resin is formed as a case having a rectangular outer shape and a predetermined depth with an open front surface. A water suction pipe connection port 112 is provided at the upper part, and a protrusion 1 for fitting with a recess provided in the pre-filter case 113 is provided inside the left and right side surfaces.
14 are provided, and two suction cups are provided on the left and right sides to be attached to the bathtub on the back side of the rear surface.

The pre-filter case 113 is for mounting the pre-filter 116, and the
The outer shape is a rectangle so as to fit into 11 and the front surface is open. Also, a large number of water holes 115 are provided on the rear surface. When the pre-filter case 113 and the pre-filter 116 are attached in close contact with each other, the flow path resistance increases and the bath water becomes difficult to flow. Therefore, a predetermined gap is provided between the pre-filter 116 and the pre-filter 116 to prevent this. The ribs 117 are provided vertically at three places in the longitudinal direction so as to reduce the flow path resistance of the bath water and support the bath in a state of good circulation. In addition,
Protrusions 119 are provided on the inner sides of both sides to fit into the depressions provided on both sides of the unit cover 118.

The pre-filter 116 is formed of a sponge or the like, and has a rectangular outer shape so as to fit into the pre-filter case 113. The pre-filter 116 is housed in the pre-filter case 113 to filter dirt such as hair in bath water. .

Further, the unit cover 118 is provided with a suction port 121 at a lower portion thereof.
Are fitted to the projections 119 and the unit main body 111 is covered.

[0008]

In such a suction unit, bath water is sucked from a hot water inlet 120, large dirt is filtered by a pre-filter 116, and then the dirt is passed through a water hole 115 of a pre-filter case 113 and the unit main body is moved. The water enters the hot water pipe 111 through the hot water pipe connecting port 112 for purification treatment. However, if the purifying treatment of the bath water is continued for a predetermined time, the pre-filter 116
As a result, relatively large dirt such as hair is clogged, and the circulating amount of bath water is reduced, so that the purification ability is reduced.
Therefore, it is necessary to remove and clean the pre-filter 116 and the pre-filter case 113, but there is a problem that the structure of the pre-filter case 113 is complicated, and it takes time to clean when removing and cleaning.
There was also a problem that dirt easily adhered to the rib 117.

In view of the above, an object of the present invention is to provide a hot water circulating apparatus having a suction unit having a simple structure capable of reducing flow path loss and requiring no trouble during cleaning. .

[0010]

The hot water circulation device of the present invention has the following configuration to achieve the above object. According to the first aspect of the present invention, a suction unit disposed in a bathtub for taking bathwater from the bathtub, a circulating means for circulating the bathwater taken from the suction unit, and purifying the circulated bathwater. In a hot water circulation device including a purifying unit and a discharge unit that discharges purified bath water into the bath tub, the suction unit includes a casing having a suction port formed therein, and the bath water that is housed and sucked in the casing. A pre-filter for filtering large dirt, the pre-filter is formed of a sponge or the like, a projection is provided on at least one surface, and when the pre-filter is housed in the casing, the projection is the casing. And a gap is formed between the pre-filter and the casing.

According to the present invention, by providing the projection on the pre-filter side, a predetermined gap is formed between the casing and the pre-filter without providing a rib on the casing. Resistance can be reduced. In addition, since there is no unevenness due to the ribs on the casing, there is little adhesion of dirt, cleaning can be easily performed, and the dirt attached to the pre-filter is a deformable material in which the pre-filter is formed with a sponge or the like. , The casing can be washed more easily.

[0012]

FIG. 1 is an exploded perspective view of a suction unit 10 of a hot water circulation device according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view thereof. The suction unit of the hot water circulation device includes a unit body 11, a pre-filter case 13,
It comprises a pre-filter 16 and a unit cover 18.

The unit body 11 has a rectangular outer shape,
It is formed as a resin case having a predetermined depth with an open front surface. A water suction pipe connection port 12 is provided at the upper part, and a recess provided in the pre-filter case 13 is fitted inside the left and right side surfaces. A projection 14 for matching is provided. In addition, two suction cups attached to the bathtub are mounted on the rear side of the rear surface so that the suction unit can be freely mounted in the bathtub.

The pre-filter case 13 has an opening on the front surface and a number of water holes 15 on the rear surface. The outer shape of the pre-filter case 13 is rectangular so as to fit into the unit body 11. It should be noted that projections 19 are provided on both sides of the unit cover 18 so as to fit into the depressions provided on both sides of the unit cover 18.

The pre-filter 16 is formed of a sponge or the like, and has an outer shape that is rectangular so as to fit into the pre-filter case 13, and is formed as a projection on the surface on the pre-filter case side in a straight line in the vertical direction. And extend,
The cross section in the horizontal direction is provided with a plurality of corrugated projections 20. And this convex part 20 is the pre-filter case 1
3 Pre-filter case 13
Is mounted with a pre-filter 16. Therefore, the concave portion of the prefilter 16 between the plurality of convex portions 20 forms a gap between the prefilter 16 and the prefilter case 13, so that the flow path resistance of the bath water is reduced.

Further, the unit cover 18 is provided with a water suction port 21 below, and the unit cover 18 is fitted to the projection 19 to cover the unit body 11.

FIG. 3 schematically shows a system of a hot water circulation device according to an embodiment of the present invention. As shown in this figure, the hot water circulation device has a suction unit 10 disposed inside a bathtub 25, and this suction unit 10 is connected to a circulation means 22 via a pipe 26, and has a control device (not shown). ) To operate the circulating means 22, it is possible to take in the bath water in the bathtub 25 from the suction unit 10.

The circulation means 22 is connected to the purification means 23 via a pipe 27. Inside the purifying means 23, natural stones such as barley stone and filter media such as granular ceramics formed by crushing and sintering these natural stones are accommodated, and bath water flows between the filter media. When passing, the filter medium decomposes organic substances such as ammonia and proteins contained in the bath water, and purifies the bath water.

On the other hand, the purifying means 23 is connected to a heater 29 via a pipe 28, and heats the heater 29 to a predetermined temperature so as to maintain an appropriate temperature for bathing.

The bath water thus purified is supplied to the pipe 3
It is returned from the discharge part 24 into the bathtub 25 through 0 and is used again.

Next, the operation of the present embodiment will be described. In the hot water circulation device according to the present embodiment, the pre-filter 16 used in the suction unit 10
And a gap is provided between the projection 20 and the pre-filter case 13. The gap reduces the flow resistance of the bath water and prevents the circulation amount from decreasing. Also, during cleaning, dirt can be easily removed, and no labor is required.

In the embodiment of the present invention, the protrusion of the pre-filter extends straight and continuously in the vertical direction.
The cross section in the horizontal direction is provided with the convex portion 20 having a waveform shape. However, the present invention is not limited to this. The projection may be a plurality of independent projections.

[0023]

As is apparent from the above description, according to the present invention, there is provided a hot water circulating apparatus having a suction unit having a simple structure and capable of reducing flow path loss and requiring no trouble during cleaning. it can.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a suction unit of a hot water circulation device according to an embodiment of the present invention.

FIG. 2 is a sectional view of a suction unit of the hot water circulation device according to the embodiment of the present invention.

FIG. 3 is a system schematic diagram of the hot water circulation device according to the embodiment of the present invention.

FIG. 4 is an exploded perspective view of a suction unit of a conventional hot water circulation device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Unit main body 12 Water suction pipe connection port 13 Pre-filter case 14 Projection 15 Water passage hole 16 Pre-filter 18 Unit cover 19 Projection 20 Convex part 21 Water suction port 22 Circulation means 23 Purification means 24 Discharge part 25 Bathtub 26,27,28, 30 pipe 29 heater

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁶ Identification number Agency reference number FI Technical indication location C02F 1/50 531 C02F 1/50 531C 531H 540 540D 550 550H 560 560A 560Z

Claims (1)

[Claims] 1. A suction unit disposed in a bathtub for taking bathwater from the bathtub, a circulating unit for circulating the bathwater taken from the suction unit, and a purifying unit for purifying the circulated bathwater. And a discharge unit for discharging purified bath water into the bath tub, wherein the suction unit includes a casing having a suction port formed therein and a large portion of the bath water that is housed and sucked in the casing. A pre-filter for filtering dirt; the pre-filter is formed of a sponge or the like; a protrusion is provided on at least one surface; and when the pre-filter is housed in the casing, the protrusion contacts the casing. A hot water circulation, wherein a clearance is formed between the pre-filter and the casing. apparatus.