JPS638381B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a heat exchanger with a built-in hot water circulation pipe having an external heat source that indirectly heats hot water in a bathtub. The present invention relates to a hot water circulating bathtub installed in a space.

[Conventional technology]

A bathtub with a structure that indirectly heats and raises the temperature of hot water in the bathtub by circulating hot water from an external heat source such as for heating through a circulation pipe built into a heat exchanger case that communicates with the bathtub. As a so-called hot water circulation bathtub, Japanese Utility Model Publication No. 49-58643,
There are publications such as Utility Model Publication No. 51-59345.

[Problem that the invention seeks to solve]

By the way, the structure described in Japanese Utility Model Application Publication No. 49-58643 has a structure in which the entrance and exit of the hot water circulation pipe is provided on the top surface of the heat exchanger case, so there is space inside the heat exchanger case for the hot water circulation pipe that passes in the vertical direction. This requires more space and the heat exchanger case itself becomes larger.Furthermore, the heat exchanger case is connected to the bathtub at a distance through upper and lower circulation pipes so that it communicates with the inside of the bathtub. In practice, it was difficult to mount the case so that it did not protrude beyond the outer edge of the bathtub.

Next, the structure described in Japanese Utility Model Application Publication No. 51-59345 has a structure in which the inlet of the hot water circulation pipe is provided on the side of the heat exchanger case, but the outlet of the hot water circulation pipe is provided on the bottom of the heat exchanger case. Therefore, as mentioned above, space is required inside the heat exchanger case for the vertical hot water circulation pipe that passes through the bottom, making it difficult to miniaturize the heat exchanger itself. There is a problem that makes connection work difficult. Furthermore, since this heat exchanger case is connected to the bathtub via an upper and lower circulation pipe, there is the problem that extra space is required to install the heat exchanger case in the bathroom separately from the bathtub. be.

In view of the above-mentioned problems, the present invention allows the heat exchanger itself to be miniaturized, and also allows work space for connection work, inspection, and repair of the hot water circulation pipe inside the heat exchanger and the external piping to be secured. By saving wasted space used to connect the bathtub with the heat exchanger, the heat exchanger can be installed in the space below the upper edge of the bathtub, and the heat exchanger can be installed in this space. The present invention provides a hot water circulation bathtub that facilitates inspection, repair, and replacement work.

[Means for solving problems]

The present invention will be explained using FIGS. 1 and 2 as examples.

The first invention is a heat exchanger 1 which has a built-in spirally wound hot water circulation pipe 2 having an external heat source and is provided with connectors 5 for connecting to a bathtub 3 at the top and bottom of one side, in a thickness direction perpendicular to the side surface. An inlet/outlet for the hot water circulation pipe 2 built into the heat exchanger 1 is provided on the side surface of the heat exchanger 1.
The heat exchanger 1 is tightly fixed to the tank wall 3a of the bathtub 3 by the connector 5, and the heat exchanger 1 is installed in a space surrounded by the tank wall 3a of the bathtub 3 and the upper edge surface 13 of the bathtub 3. 3b.

Next, in a second invention, the heat exchanger 1 according to the first invention is disposed in a space 3b surrounded by the tank wall 3a of the bathtub 3 facing the washing area and the upper edge surface 13 of the bathtub 3, One, two or three aprons 4, 9 are attached below the outer end of the upper edge surface 13, and part or all of the apron 4 on the side facing the washing area is detachable. It is something.

〔Example〕

Embodiments of the present invention will be described below with reference to FIGS. 1 and 2.

FIG. 1 is a perspective view showing an embodiment of a hot water circulation type bathtub according to the present invention, and FIG. 2 is a cross-sectional view taken along the line A-A in FIG. This is an upper edge surface formed by bending the upper end of the wall 3a outward.

1 is a heat exchanger, and 2 is a spirally wound hot water circulation pipe that is built into the heat exchanger 1 and circulates hot water heated by an external heat source. 5
are connecting fittings with the bathtub 3 provided above and below one side of the width direction of the heat exchanger 1, and this connecting fitting 5 is connected to the heat exchanger from the inside of the bathtub 3 through the tank wall 3a of the bathtub 3 through the packing 14. 1 and is attached and fixed to the side surface of the heat exchanger 1, so that the heat exchanger 1 is directly fixed to the tank wall 3a of the bathtub 3. moreover,
The outlet and inlet of the hot water circulation pipe 2 built into the heat exchanger 1 are provided on the side surface in the thickness direction perpendicular to the side surface on which the connector 5 of the heat exchanger 1 is provided, and heat is exchanged in this side surface portion. A hot water circulation pipe 2 in a vessel 1 is connected to a hot water inlet pipe 11 and a hot water outlet pipe 12. As described above, the heat exchanger 1 is made thin and compact by providing the entrance and exit of the hot water circulation pipe 2 on the side surface in the thickness direction, and is directly fixed to the tank wall 3a of the bathtub 3 by the connector 5. As shown in FIG.
The heat exchanger 1 is made thin with a dimension of about 60 mm or less in the thickness direction so that it can fit within the range b. Above heat exchanger 1
Suitable materials include metals such as copper and aluminum, and heat-resistant plastics.

Incidentally, the heat exchanger 1 can be sufficiently fixed with the above-mentioned connector 5, but in order to further ensure support, a frame 6 is fixed to the lower part of the bathtub 3, and the heat exchanger 1 is supported by this frame 6. Good too.

Reference numeral 9 denotes an apron attached to the outer end of the upper edge surface 13 of the bathtub 3 toward the bottom of the bathtub 3, and this apron 9 is attached to the outer edge of the upper edge surface 13 of the bathtub 3, as shown in FIGS.
The apron may be attached to all four sides, that is, the entire circumference of the bathtub 3, but depending on the bathroom, it may be an apron that covers three sides, two sides, or one side of the bathtub 3. In either case, part or all of the apron part facing the washing area is removable, and in this embodiment, in FIGS. The front lid 4 with the portion 8 formed thereon is attached to the apron 9 with screws or the like, and the front lid 4 is removable.Furthermore, the cover 7, which is a part of the apron 9, is attached to the bent portion 8 of the front lid 4. It is removably attached with screws, etc. Reference numeral 10 denotes a circulation hot water control valve that is provided protruding from the cover 7 and connected to the hot water circulation pipe 2.

As shown in the embodiment, when the heat exchanger 1 is disposed in the space 3b surrounded by the tank wall 3a and the upper edge surface 13 of the bathtub 3 facing the washing area, If part or all of the side apron is removable, inspection, repair, replacement, piping, etc. of the heat exchanger will be easier by removing the apron.

〔Effect of the invention〕

In the first invention, the entrance and exit of the hot water circulation pipe built into the heat exchanger is provided on the side surface in the thickness direction perpendicular to the side surface of the heat exchanger where the connection device with the bathtub is provided. There is no need to bend the hot water circulation pipe vertically to use the top or bottom of the exchanger as an inlet/outlet, or to take up extra space to store the bent portion of the hot water circulation pipe inside the heat exchanger. The exchanger itself can be made into a thin and compact shape, and since the heat exchanger is closely fixed to the tub wall of the bathtub using a connector, it is easier to connect the conventional bathtub and heat exchanger. The wasted space required to use the upper and lower circulation pipes used in bathtubs can be saved, and as a result, the heat exchanger can be installed in the space surrounded by the bathtub wall and upper edge surface. There is no need to consider the space for installing a heat exchanger in the bathroom, and the bathtub can be installed so that the outer edge of the upper edge of the bathtub on the side where the heat exchanger is installed is in contact with the bathroom wall. It is effective when installed in a narrow bathroom, and the side part of the heat exchanger can be connected to external piping, ensuring sufficient work space for inspection and repair even in the narrow space around the bathtub. This has the effect of making these tasks easier.

Next, in the second invention, the heat exchanger in the first invention is installed in a space surrounded by the tank wall of the bathtub facing the washing area and the upper edge surface of the bathtub, and the upper edge of the bathtub. One, two, or three aprons are installed below the outer end of the surface, and part or all of the apron on the side facing the washing area where the heat exchanger is installed is detachable. In addition to the effects of the first invention, there is an effect that inspection, repair, replacement, piping, etc. of the heat exchanger disposed in the space are further facilitated.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an embodiment of a hot water circulation type bathtub according to the present invention, and FIG. 2 is a sectional view taken along the line AA in FIG. 1. Explanation of symbols, 1... Heat exchanger, 2... Hot water circulation pipe, 3... Bathtub, 3a... Tank wall, 3b... Space, 4... Front lid, 5... Connector, 5a... Flange, 6... Frame, 7... Cover, 8... Bent portion, 9... Apron, 10... Circulating hot water control valve, 11... Hot water inlet pipe, 12... Hot water outlet pipe, 13... Upper edge surface , 14... Patsukin.

Claims (1)

[Scope of Claims] 1. A side surface in the thickness direction perpendicular to the side surface of a heat exchanger that incorporates a spirally wound hot water circulation pipe having an external heat source and that is provided with connectors for connecting to a bathtub at the top and bottom of one side. The heat exchanger is provided with an inlet/outlet for a hot water circulation pipe built into the heat exchanger, and the heat exchanger is closely fixed to the tub wall of the bathtub by the connector, and the heat exchanger is connected to the tub wall of the bathtub and the upper edge of the bathtub. A hot water circulation type bathtub characterized by being arranged in a space surrounded by a surface. 2. A heat exchanger that has a built-in spirally wound hot water circulation pipe that has an external heat source and is provided with connectors for connecting to a bathtub on the upper and lower sides of one side. The heat exchanger is closely fixed to the tub wall of the bathtub by the connecting device, and the heat exchanger is connected to the tub wall of the bathtub facing the washing area side and the upper edge surface of the bathtub. and one, two or three aprons are installed below the outer end of the upper edge surface,
A hot water circulation bathtub characterized in that part or all of the apron on the side facing the washing area is detachable.