JP4937809B2 - Hot water bath equipment - Google Patents

Description

  The present invention relates to a hot water bath apparatus of a single can / two-channel hot water storage system provided with a bath heat exchanger for exchanging heat with the hot water in the hot water storage can inside the hot water storage can in which the hot water in the can is heated by combustion of the burner section. It is about.

Conventionally, in this type of hot water bath apparatus, as shown in FIG. 5, a hot water storage can body 101 for storing hot water, a combustion chamber 102 formed inside the lower portion of the hot water storage can body 101, and the combustion chamber 102 are faced. Burner section 103, bath heat exchanger 104 that is provided in hot water storage can body 101 and has a serpentine tube that exchanges heat with hot water in hot water storage can body 101, and hot water storage can body 101 is inserted in the side wall of hot water storage can body 101. There is known a one-can / two-channel hot water storage hot water bath apparatus including a temperature thermistor 105 as temperature detecting means for detecting the temperature of the hot water. (For example, refer to Patent Document 1.)
Japanese Patent Laid-Open No. 9-280652

  In this conventional hot water bath apparatus, as shown in FIG. 6, a temperature thermistor 105 for detecting the temperature of hot water in the hot water storage can body 101 is inserted in the hot water storage can body 101 in order to control the hot water temperature. The temperature thermistor 105 is inserted into the side wall of the hot water storage can body 101 at a height where the bath heat exchanger 104 is present. As a result, the bath heat exchanger 104 and the temperature thermistor 105 come into contact with each other, and the temperature thermistor 105 is damaged.

  Therefore, as shown in FIG. 7 from the viewpoint of protecting the temperature thermistor 105, the length of the thermistor socket 106 shown in FIG. 6 is longer than the length of the thermistor socket 106. Although the structure which does not contact the temperature thermistor 105 was taken, the thing of the structure had the problem that the hot-water temperature discharged hot water will fluctuate | vary largely with respect to setting temperature.

In order to solve the above-mentioned problems, the present invention has, in particular, a configuration in which a hot water can body for storing hot water by connecting a water inlet pipe and a hot water outlet pipe, a burner section for heating hot water in the hot water storage can body, and the hot water storage can body. A combustion chamber formed to face the burner portion, an exhaust chamber adjacent to the upper part of the hot water storage can body, a smoke pipe communicating with the exhaust chamber and the combustion chamber, and surrounding the smoke pipe in the hot water storage can body A hot water bath apparatus comprising: a bath heat exchanger comprising a serpentine tube wound around and heated to exchange heat with hot water in a hot water storage can; and a temperature detection means for detecting the temperature of the hot water in the hot water storage can. On the side wall of the hot water storage can body at the height position where the exchanger exists, a bulging portion is formed by bulging a part of the side wall outward, and a mounting hole is opened in the bulging portion. and, when attached to inserted the temperature detecting means into the hole with said mounting, the temperature detection The temperature sensing part at the tip of the step is located on the inner side of the hot water storage can body with respect to the hot water storage area formed inside the hot water storage can body by the bulging part, and is located on the outer side of the bath heat exchanger. It is what.

According to this invention, when a part of the side wall is expanded outwardly on the side wall of the hot water storage can body at the height position where the bath heat exchanger exists, and the temperature detecting means is inserted and attached thereto. The temperature sensing portion at the tip of the temperature detecting means is located on the inner side of the hot water storage can body than the hot water storage area formed inside the hot water storage can body by the bulging portion, and is located on the outer side of the bath heat exchanger. by there, there is no fear that even deeply inserted the tip of the temperature sensing means is a temperature sensitive portion to the bath heat exchanger side in contact with the bath heat exchanger, damaging the temperature detecting means due to vibration during transportation In addition, the tip of the temperature detection means, which is the temperature sensing part, has a sufficient distance from the side wall and the bulging part of the hot water storage can easily affected by outside air. Can be detected, and stable tapping performance can be obtained. That.

Next, a hot water bath apparatus according to an embodiment of the present invention will be described with reference to FIGS.
1 is a hot water storage can body for storing hot water, 2 is a combustion chamber formed inside the lower portion of the hot water storage can body 1, 3 is a burner section that faces the combustion chamber 2 and heats the hot water in the hot water storage can body 1, 4 is It is a burner control unit that performs on / off control of the burner unit 3 in accordance with the hot water temperature in the hot water storage can body 1.

  5 is an exhaust chamber adjacent to the upper part of the hot water storage can body 1, 6 is a plurality of smoke pipes communicating with the combustion chamber 2 and the exhaust chamber 5, and 7 is an exhaust pipe connected to the exhaust chamber 5. The gas passes through the smoke pipe 6 and is sent to the exhaust chamber 5 and is exhausted from the exhaust cylinder 7. Reference numeral 8 denotes a bath heat exchanger which is wound around the smoke pipe 6 in the hot water storage can body 1 and includes a serpentine tube for exchanging heat between hot water in the hot water storage can body 1 and bath water from a bathtub (not shown). .

  Reference numeral 9 denotes a water intake pipe connected to the lower part of the hot water storage can body 1 for supplying water into the hot water storage can body 1, and 10 is a hot water discharge pipe connected to the upper part of the hot water storage can body 1 for discharging hot water stored. 11 is a bath return pipe, 12 is a bath return pipe, and connects the bath heat exchanger 8 for heating the bath water and the bathtub so as to be circulated by the bath return pipe 11 and the bath return pipe 12.

  Reference numeral 13 denotes a bulging portion obtained by bulging a part of the side wall of the hot water storage can body 1 at a height where the bath heat exchanger 8 exists, and reference numeral 14 denotes an opening in the bulging portion 13. An attachment hole 16 for inserting a temperature thermistor as temperature detecting means 15 for detecting the temperature of the hot water, 16 is a thermistor socket for fixing the temperature thermistor 15 attached to the attachment hole 14 by welding or the like.

  As described above, the bulging portion 13 is generally formed at a position where the temperature thermistor 15 is inserted, the mounting hole portion 14 is provided in the bulging portion 13, and the temperature thermistor 15 is inserted in the mounting hole portion 14. As a result, even if the tip of the temperature thermistor 15 that is the temperature sensing part is inserted deeply into the bath heat exchanger 8 in order to detect the appropriate temperature of the hot water in the hot water storage can body 1, The bath heat exchanger 8 does not come into contact with the temperature thermistor 15 and there is no fear that the temperature thermistor 15 is damaged.

  The burner unit 3 has a fixed combustion capacity, and the burner control unit 4 turns on the combustion of the burner unit 3 when the hot water temperature in the hot water storage body 1 detected by the temperature thermistor 15 is equal to or lower than a predetermined combustion on temperature. At the same time, when the temperature of the hot water in the hot water storage can body 1 detected by the temperature thermistor 15 reaches a predetermined combustion off temperature higher than the combustion on temperature, control is performed to turn off the combustion of the burner unit 3. The tapping temperature is set by a remote controller (not shown) or the like.

Next, the hot water performance will be described based on the test results of the embodiment shown in FIG.
In FIG. 3, the vertical axis represents the temperature of hot water discharged from the hot water discharge pipe 10 [° C.], the horizontal axis represents time [t], and the curve drawn with a solid line inserts the temperature thermistor 15 as shown in FIG. In the hot water discharge performance in the embodiment of the present invention provided, the curve drawn with a dotted line is the hot water discharge performance in the conventional example in which the temperature thermistor 15 is inserted as shown in FIG. In this test, the set temperature of the hot water is 40 [° C.], the feed water temperature is 25 [° C.], the hot water flow rate is 600 [L / h], and only the hot water side of the hot water tap (not shown) is opened. Data was collected after a sufficient time [t] had elapsed from the start and stabilized.

  From the test results of FIG. 3, it can be seen that the conventional one drawn with a dotted line has a large fluctuation of the tapping temperature and a large differential. Since the temperature of the hot water discharged is adjusted to the set temperature (here, 40 [° C.]), the burner control unit 4 controls the burner unit 3 on and off based on the temperature detected by the temperature thermistor 15. If the temperature detected by the temperature thermistor 15 is not appropriate, the temperature of the hot water to be discharged becomes larger than the set temperature. Therefore, it can be seen that the conventional thermistor 15 is difficult to detect an appropriate hot water temperature in the hot water storage can body 1.

  On the other hand, the thing of the present invention drawn with the solid line has a small fluctuation of the tapping temperature, and the differential is about half that of the conventional one. Therefore, the tip of the temperature thermistor 15 that is a temperature sensing part is sufficiently far from the side wall of the hot water storage can body 1 and the bulging part 13 that are easily affected by outside air, as compared with the conventional one. It is understood that an appropriate temperature of the hot water in the hot water storage can body 1 can be detected, and stable hot water discharge performance can be obtained, which has been proved by a test.

  As described above, in the present invention, the two problems that the temperature thermistor 15 is damaged due to the contact with the bath heat exchanger 8 of the conventional hot water bath apparatus and the temperature of the hot water discharged with respect to the set temperature largely fluctuate at the same time. It was something that could be solved.

  In addition, this invention is not limited to said one Embodiment, In this embodiment, the hot water supply provided with the burner part 3 in the lower part of the hot water storage can body 1, and provided with the bath heat exchanger 8 in the hot water storage can body 1. Although the present invention is applied to the bath apparatus, as shown in FIG. 4, the present invention can also be applied to a hot water bath apparatus having a burner portion 3 at the top and a bath heat exchanger 8 in the hot water storage can body 1.

The schematic block diagram of one Embodiment of this invention. The dotted line enlarged view in FIG. The graph which shows the tapping performance of one Embodiment of this invention. The schematic block diagram of other embodiment of this invention. The schematic block diagram of the conventional hot-water bath apparatus. FIG. 6 is an enlarged view of a dotted line portion in FIG. 5 and shows an example of a temperature thermistor mounting structure. FIG. 6 is an enlarged view of a dotted line portion in FIG. 5 and shows another example of a temperature thermistor mounting structure.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Hot water storage can body 2 Combustion chamber 3 Burner part 5 Exhaust room 6 Smoke pipe 8 Bath heat exchanger 9 Intake pipe 10 Outlet pipe 13 Expansion part 14 Mounting hole part 15 Temperature detection means (temperature thermistor)

Claims (1)

A hot water storage can body that stores hot water by connecting a water inlet pipe and a hot water discharge pipe, a burner section that heats the hot water in the hot water storage can body, a combustion chamber that is formed in the hot water storage can body and faces the burner section, and the hot water storage An exhaust chamber adjacent to the upper portion of the can body, a smoke pipe communicating the exhaust chamber and the combustion chamber, and a serpentine tube wound around the hot water storage can so as to surround the smoke pipe and exchanging heat with the hot water in the hot water storage can. In a hot water bath apparatus comprising a bath heat exchanger and temperature detecting means for detecting the temperature of hot water in the hot water storage can, on the side wall of the hot water storage can at a height where the bath heat exchanger exists is a part of the side wall is allowed to form a bulging portion bulging outward, further the mounting hole is opened in the bulging portion, and inserted the temperature detecting means into the hole with said mounting When attached, the temperature sensing part at the tip of the temperature detecting means is formed by the bulging part so that the hot water storage can Than hot water storage region formed in the part located in the hot water storage can body inner side, and hot water supply bath device which is characterized in that is positioned outward from the bath heat exchanger.

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