JPH0531483Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a heat exchange device for a bath.

(Prior Art) Conventional bath heat exchange devices include a natural circulation type and a pump-based forced circulation type.

(Problem to be solved by the invention) In both the natural circulation type and forced circulation type described above, body hair, dirt, etc. circulate through the heat exchanger together with hot water, and the heat exchanger becomes clogged. As a result, the capacity of the heat exchanger may be reduced or, in some cases, a dry-heating phenomenon may occur, and it is necessary to solve these problems. Further, for safe bathing of children and the like, it is required that the hot water in the bathtub has as little temperature difference as possible. Furthermore, in forced circulation type baths, even if the motor etc. breaks down, natural circulation is required to ensure that bathing is not affected.

(Means for Solving the Problem) In order to solve the above problem, the present invention extends the side water wall of the heat exchanger in the horizontal direction to form an extended side water wall, and the extended side water wall has a , the hot water sending passage and the hot water sending back passage are each opened, and an impeller is installed in the extended side water wall at a position opposite either the inlet of the hot water sending passage or the outlet of the hot water sending passage. a hot water guide plate extending in the direction of the heat exchanger and having the same width as the inside of the extended water wall is installed in the extended water wall between the hot water sending passage and the hot water return passage; The hot water sending passage and the hot water returning passage are each connected to a bathtub.

(Function) By the rotation of the impeller provided in the extension side water wall of the side water wall of the heat exchanger, hot water from the bathtub (not shown) is routed through the hot water delivery passage and hot water return via the hot water guide plate. Circulate through the aisles. In this case, some of the hot water is
A short pass is carried out by the extended side water wall and the hot water guide plate, and body hair, dirt, etc. are circulated along with this short pass flow, and do not flow toward the heat exchanger. In other words, the flow of hot water that is forced to convect on the extended water wall side (short pass flow) has a faster flow rate than the flow of hot water that naturally convects on the heat exchanger side, and body hair, dirt, etc. It does not flow in the direction of the container. At the same time, since this short pass flow does not pass through a heat exchanger, its temperature is low and the hot water temperature distribution within the bathtub is made uniform. In the heat exchanger, natural convection occurs as described above, and the hot water heated by this natural convection joins the hot water of the short pass flow and flows into the bathtub. In the present invention, since an impeller is installed at a position opposite to the inlet of either the hot water sending passage or the hot water returning passage, these can be carried out using a motor with a small capacity.
Moreover, even if a failure occurs in the motor or the like, the impeller will continue to circulate naturally due to the above-described structure, and there will be no problem in bathing.

(Example) In FIG. 1, reference numeral 1 is a heat exchanger,
2 is a side water wall of the heat exchanger. The side water wall 2 of this heat exchanger is extended laterally to form an extended side water wall 8. The extended side water wall 8 has a hot water delivery passage 3 and a hot water return passage 4 opened therein, and has either an inlet 11 of the hot water delivery passage 3 or an outlet 12 of the hot water return passage 4 facing each other. An impeller 6 is installed within the extended water wall 8 at the location. In the extended water wall 8 between the hot water delivery passage 3 and the hot water return passage 4,
A hot water guide plate 7 extending in the direction of the heat exchanger and having the same width as the inside of the extended side water wall 8 is installed, and the hot water sending passage 3 and the hot water returning passage 4 are connected to a bathtub, respectively. . 2A shows an example in which the impeller 6 is provided at a position facing the hot water sending passage 4 side, and FIG. 2B is an example in which the impeller 6 is provided at a position facing the hot water sending back passage 3 side.

As a result, the rotation of the impeller 6 provided on the extended water wall 8 of the heat exchanger 1 causes hot water from the bathtub (not shown) to flow through the hot water guide plate 7 to the hot water delivery passage 3.
and circulates through the hot water return passage 4. At this time, a part of the hot water is short-passed by the extended side water wall 8 and the hot water guide plate 7, and body hair, dirt, etc. are circulated along with this short-pass flow, and flow in the direction of the heat exchanger 1. do not have. In other words, the flow of hot water that is forced to convect on the extended water wall side 8 (short pass flow) has a faster flow rate than the flow of hot water that naturally convects on the heat exchanger 1 side, and body hair, dirt, etc. It does not flow in one direction in the heat exchanger. At the same time, this short path style
Since the hot water does not pass through the heat exchanger 1, the temperature is low and the hot water temperature distribution in the bathtub is made uniform. As mentioned above, natural convection takes place in the heat exchanger 1,
The hot water heated by this natural convection joins the hot water of the short pass flow and flows into the bathtub.
In the present invention, the impeller 6 is built into the extended water wall 8, so that a small motor 9 can perform these functions. Further, even if a failure occurs in the motor 9 or the like, since the impeller 6 is built in the side water wall 2 of the heat exchanger 1, natural circulation is performed and there is no problem in bathing.

(Effects of the invention) Since the invention is as described above, it is possible to prevent body hair, dirt, etc. from circulating in the direction of the heat exchanger, and to equalize the temperature of the hot water in the bathtub. Furthermore, even if the motor breaks down due to water leakage, the impeller is built into the side water wall, so natural convection allows circulation and there is no problem with bathing. There is.

[Brief explanation of the drawing]

FIG. 1 is an embodiment of the present invention, and FIGS. 2A and 2B are cross-sectional explanatory views showing how the impeller is attached. Code 1... Heat exchanger, 2... Side water wall of heat exchanger, 3... Hot water sending passage, 4... Hot water sending back passage,
5... impeller, 6... impeller, 7... hot water guide plate,
8...Extension side water wall, 9...Motor, 10...Hot water circulation passage on the heat exchanger side, 11...Inlet section, 12...
...Exit section.

Claims (1)

[Scope of utility model registration request] The side water wall of the heat exchanger is laterally extended to form an extended side water wall, and the extended side water wall is provided with a hot water sending passage and a hot water returning passage, respectively, and an inlet of the hot water sending passage. An impeller is disposed within the extended side water wall at a position opposite either the section or the outlet section of the hot water return passage, and an impeller is disposed within the extended side water wall between the hot water sending passage and the hot water return passage. is characterized in that a hot water guide plate is installed that extends in the direction of the heat exchanger and has the same width as the inside of the extended side water wall, and the hot water sending passage and the hot water returning passage are each connected to a bathtub. Heat exchange device for bath.