JPH0531484Y2 - - 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, the forced circulation type is required to be free from failures due to water leakage, etc.

(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. the impeller is mounted with its rotating shaft inclined upward on the motor side, and extends in the direction of the heat exchanger within the water wall on the extension side between the hot water sending passage and the hot water sending back passage; Further, a hot water guide plate having the same width as the inside of the extension side water wall is installed, and the hot water sending passage and the hot water sending back 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. As described above, natural convection occurs in the heat exchanger, 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. Further, even if a failure occurs in the motor or the like, the impeller will continue to circulate naturally due to the above-described structure, so there will be no problem in bathing. Further, in the present invention, in the event that water leaks from the seal portion, the rotary shaft is installed in the extended water wall with the motor side facing upward, so that accidents caused by water leakage can be prevented.

(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 12 of the hot water delivery passage 3 or an outlet 13 of the hot water return passage 4 facing each other. An impeller 6 is installed within the extended water wall 8 at the location. The impeller 6 is mounted with its rotating shaft tilted upward on the motor 9 side,
A hot water guide plate 7 extending in the direction of the heat exchanger 1 and having the same width as the inside of the extended water wall 8 is provided in the extended water wall 8 between the hot water sending passage 3 and the hot water return passage 4. The hot water delivery passage 3 and the hot water return passage 4 are each connected to a bathtub.
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.

By the rotation of the impeller 6 provided in the extension side water wall 8 of the side water wall 2 of the heat exchanger 1, hot water from the bathtub (not shown) is sent out via the hot water guide plate 7. It circulates through the passage 3 and 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 8 side (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 the direction of heat exchanger 1. At the same time, since this short pass flow does not pass through the heat exchanger 1, its temperature is low and the hot water temperature distribution in the bathtub is made uniform. As described above, natural convection occurs in the heat exchanger 1, 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, the impeller 6 is installed at a position opposite either the inlet 12 of the hot water sending passage 3 or the outlet 13 of the hot water returning passage 4, so that these can be implemented with a small motor. Also,
Even if a failure occurs in the motor 9 etc., the impeller 6
The above-described structure allows natural circulation, so there is no problem in bathing. Furthermore, the present invention
In the event that water leaks from the motor seal portion 11, the rotary shaft 5 is tilted with the motor 9 side facing upward and is attached to the water wall 8 on the extension side of the heat exchanger 1, so that an accident due to water leakage can be prevented. I can do it.

(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, to equalize the temperature of the hot water in the bathtub, and to prevent the body hair and dirt from circulating in the direction of the heat exchanger. Since the impeller is built-in, this can be done with a motor of small capacity. Further, the present invention has various effects such as being able to prevent motor failure due to water leakage etc. due to the unique mounting configuration of the motor.

[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 installed. Code 1... Heat exchanger, 2... Side water wall of heat exchanger, 3... Hot water sending passage, 4... Hot water sending back passage,
5... Rotating shaft, 6... Impeller, 7... Hot water guide plate, 8... Extended side water wall, 9... Motor, 10...
Hot water circulation passage on the heat exchanger side, 11... motor seal section, 12... inlet section, 13... outlet 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 installed in the extension side water wall at a position opposite either the section or the outlet section of the hot water return passage, and the impeller is mounted with its rotation axis tilted upward on the motor side; A hot water guide plate extending in the direction of the heat exchanger and having the same width as the inside of the extension side water wall is installed in the extension side water wall between the hot water sending passage and the hot water return passage, and the hot water sending passage is connected to the hot water sending passage. A heat exchange device for a bath, characterized in that the passage and the hot water return passage are each connected to a bathtub.