JP4175260B2 - Hot water heater - Google Patents

Description

  The present invention supplies a gas such as oxygen into the bath water of a bathtub using the bath piping of a hot-water storage water heater that heats the hot water using electric power supplied based on late-night power or hourly rate systems. The present invention relates to a hot water storage type water heater having a function to perform.

Conventionally, this type of oxygen supply device is equipped with a fine bubble generator or jet injection device, and supplies gas to a pipeline for circulating bath water such as a bubble bath or jet bath that circulates bath water through these devices. There is a type in which a supply unit is provided and an oxygen enrichment device for supplying oxygen-enriched air to the supply unit is provided (for example, see Patent Document 1).

FIG. 4 shows an oxygen supply device for a conventional bathtub described in Patent Document 1. In the figure, 1 is a bathtub, 2 is a conduit, 3 is a supply section, 4 is a suction port, 5 is a discharge port, 6 is an oxygen enrichment device, and 7 is a pump.
JP-A-4-2347

  However, in the conventional configuration described above, in a bath apparatus equipped with a fine bubble generator and a jet spray device, an oxygen supply unit is provided in the middle of the bubble bath pipe or jet bath pipe, and oxygen-enriched air is supplied to the supply unit. In order to supply oxygen to the bathtub, it is necessary to install a fine bubble generator and jet injection device and have a dedicated bath system, and it cannot be easily installed at home. It was. In addition, since the jet bath system has a large flow rate, it has been difficult to use for a long time in relation to electricity bills, noise, and the like, and there has been a problem that sufficient oxygen cannot be supplied.

  Therefore, in order to solve the above problems, an oxygen enrichment device that supplies high concentration oxygen is installed on the heat source device side that supplies hot water to the bathtub, and high concentration oxygen is mixed into the bath circuit connecting the heat source device and the bathtub. Configuration is conceivable.

In addition , in an instant water heater that uses gas or oil as fuel, there is a particular problem even if an oxygen enrichment device is installed in the water heater so that high-concentration oxygen is mixed into the bath piping in the main body. However, in hot water storage water heaters such as electric water heaters and heat pump water heaters that boil at night with mainly midnight power and use the hot water stored in the daytime, an oxygen enricher is installed in the body. When installed, the air taken from outside the main body flows into the main body via the oxygen enricher, and this air flow significantly reduces the heat retention characteristics of the hot water storage tank, boiling it to a high temperature and storing hot water. There is a problem that the temperature of the hot water is lowered, and there is a possibility that rainwater or small animals may enter the main body together with the air. Or water storage type water heater itself is a problem that there is a possibility that a failure.

  The present invention solves a specific problem that occurs when an oxygen enrichment device is incorporated in a hot water storage water heater, and constitutes an air passage for the air flowing through the oxygen enrichment device incorporated in the main body, By improving the airtightness of this air passage, rainwater and small animals entering the hot water storage tank may deteriorate the electrical insulation inside the main unit, causing electric leakage or malfunctioning of the hot water storage water heater itself. The purpose is to solve the problem.

To achieve the above object, a hot water storage type water heater of the present invention, detachable front had an exterior casing of substantially rectangular parallelepiped having an open, intakes minimum air with shielding the front of the outer housing A front plate, a tank for storing a predetermined amount of heated water, a bath circuit for supplying the hot water stored in the tank to the bathtub, and an oxygen enrichment that has an air supply / discharge port and generates high-concentration oxygen inside. An oxygen enrichment device having an air intake fan for introducing air to the membrane and the oxygen enrichment membrane, and a mixing means for sucking a gas generated in the oxygen enrichment device with a vacuum pump and mixing the gas into the bath circuit, The enrichment device is fixed to the tank, and the air supply / exhaust port is in close contact with the back surface of the front plate, and the air intake is disposed at a position lower than the oxygen enrichment film and the intake fan. It is characterized by this.

  According to the above invention, the oxygen enrichment apparatus has a large mass and strength, is fixed to a stable tank that absorbs minute operation vibrations, and has a sufficient sealing surface between the front plate and the flange. Since it can be secured, it is possible to achieve both the intake of necessary air and the prevention of unnecessary air and rainwater intrusion into the exterior housing with a simple configuration that does not add a special sealing path. As a result, the electrical insulation inside the main body deteriorates, and the problem of electric leakage or failure of the hot water storage water heater itself can be solved.

  In addition, no matter how many times the front plate is attached and detached for the installation and maintenance of hot water supply pipes and electrical work, the sealing performance between the flange and the front plate does not deteriorate, and the initial performance is stable. Can be maintained.

  And while eliminating the influence of the outside air on the heat insulation characteristics of the tank, it is possible to mix a gas such as high-concentration oxygen into the bathtub using the bath piping in the housing, and the high concentration mixed in the bath water. The oxygen concentration in the bathroom can be ensured to an appropriate value by the gas such as oxygen.

  The hot water storage water heater of the present invention has an oxygen-enriching device fixed to a stable tank that has a large mass and strength and absorbs minute operation vibrations, and has a hermetically sealed surface with a front plate by a flange. Because it can be secured sufficiently, it is possible to achieve both the intake of necessary air and the prevention of unnecessary air and rainwater intrusion into the exterior housing with a simple configuration that does not add a special sealing path. It is possible to solve the problem that the electrical insulation inside the main body is deteriorated, the electric leakage is caused, and the hot water heater itself is broken.

  In addition, no matter how many times the front plate is attached and detached for the installation and maintenance of hot water supply pipes and electrical work, the sealing performance between the flange and the front plate does not deteriorate, and the initial performance is stable. Can be maintained.

  And by preventing the intrusion of unnecessary air and rainwater into the exterior housing, it improves the heat retention characteristics and durability of the hot water heater and uses the bath piping in the housing to keep it in the bathtub. A gas such as high-concentration oxygen can be mixed, and the oxygen concentration in the bathroom can be ensured to an appropriate value by the gas such as high-concentration oxygen mixed in the bath water.

Furthermore, even when raining under strong winds or when washing the exterior housing and air intake with high-pressure water, water droplets hit the air inlet and are discharged again from the air intake, causing water droplets to enter the oxygen enricher. Therefore, it is possible to achieve both the intake of necessary air and the prevention of unnecessary rainwater and cleaning water from entering the exterior housing, and small animals such as bees and corals enter the air intake. Even if you make a nest, you can clean it with high-pressure washing water.

First invention comprises a substantially rectangular parallelepiped outer casing front is open, the front plate removable having a minimum air inlet with shields in front of the outer housing, a predetermined amount of heated water A tank for storing hot water, a bath circuit for supplying hot water stored in the tank to the bathtub, an oxygen-enriched membrane having an air supply / exhaust port and generating high-concentration oxygen inside, and air to the oxygen-enriched membrane An oxygen enrichment device having a leading intake fan and a mixing means for sucking a gas generated in the oxygen enrichment device with a vacuum pump and mixing the gas into the bath circuit, the oxygen enrichment device being fixed to the tank The air supply / exhaust port is configured to be in close contact with the back surface of the front plate, and the air intake port is disposed at a position lower than the oxygen-enriched film and the intake fan. Enrichment device has large mass and strength A simple structure that does not add a special sealing path because it is secured to a stable tank that absorbs minute operating vibrations and a sufficient sealing surface with the front plate can be secured by the flange. Therefore, it is possible to achieve both the intake of necessary air and the prevention of unnecessary air and rainwater from entering the interior of the exterior casing, resulting in deterioration of the electrical insulation inside the main unit, electric leakage, and hot water storage water heater The problem that the device itself breaks down can be solved.

  In addition, no matter how many times the front plate is attached and detached for the installation and maintenance of hot water supply pipes and electrical work, the sealing performance between the flange and the front plate does not deteriorate, and the initial performance is stable. Can be maintained.

  And by preventing the intrusion of unnecessary air and rainwater into the exterior housing, it improves the heat retention characteristics and durability of the hot water heater and uses the bath piping in the housing to keep it in the bathtub. A gas such as high-concentration oxygen can be mixed, and the oxygen concentration in the bathroom can be ensured to an appropriate value by the gas such as high-concentration oxygen mixed in the bath water.

Furthermore, the air intake is not directly opposed to the oxygen-enriched membrane and the intake fan, and is configured at a position lowered by one step, thereby preventing rain under strong winds, the exterior housing and the air intake from high-pressure water. Even when washing with water, water droplets are discharged from the air intake and do not enter the oxygen enrichment device, so that necessary air can be taken in and unnecessary rainwater or washing water inside the exterior casing. It is possible to prevent both intrusions, and even if a small animal such as a bee or a shark enters the air intake and forms a nest, it can be cleaned with high-pressure washing water. .

According to a second aspect of the present invention, the air supply / exhaust port has a flange shape, and a substance containing a factor that is not preferred by small animals is attached to the flange-shaped air supply / exhaust port, thereby preventing intrusion of rainwater or the like. The path from the air intake of the plate to the oxygen enricher is a place where small animals can easily nest, but a substance containing factors that are not preferred by small animals is attached to the flange that is viewed from the air intake. Not only can this be prevented, but if this is carried out in the form of painting, it can prevent deterioration in aesthetics and hygiene due to adhesion of foreign matters.

According to a third aspect of the present invention, the oxygen-enriched device has a large mass and strength by bringing the flange-shaped air supply / exhaust port into close contact with the front plate via a vibration-proof sealing material. It is fixed to a stable tank that absorbs minute driving vibrations, and even if it is attached to the flange of the oxygen enricher by attaching a front plate, it has a vibration-proof sealing material, In addition to preventing unnecessary air and rainwater from entering the interior, the operating vibration of the oxygen enrichment device is less likely to be transmitted to the front plate and exterior casing, reducing the noise level of a hot water heater. be able to.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
FIG. 1 is an overall configuration diagram of a hot water heater according to the first embodiment of the present invention, FIG. 2 is a detailed view of the oxygen enricher, and FIG. 3 is an external view of the hot water heater.

In the figure, hot water from hot water storage tank 1 for storing hot water is taken out and heated by heat source device 2 and then returned to hot water storage tank 1 to form a boiling circuit, so that hot water is stored from the top of hot water storage tank 1 in a stacked state. I have to. In the present embodiment, a heat pump water heater using a supercritical heat pump cycle using CO 2 as a refrigerant as a heat source will be described. However, an electric water heater using an electric heater as a heat source may be used. Or a configuration provided outside the hot water storage tank.

  Reference numeral 3 denotes a rectangular parallelepiped exterior housing that is open at the front, and a detachable front plate 4 is fixed by screws 4-2. In the case of construction for hot water supply piping, electrical work, or maintenance work, This can be done by removing the front plate 4.

  When hot water is supplied to the bathtub 5, the hot water in the hot water storage tank 1 flows into the bathtub 4 through the bath outlet pipe 12 and is filled by opening the hot water solenoid valve 6.

  When reheating the hot water in the bathtub 5, the water in the bathtub 5 is guided to the reheating heat exchanger 8 disposed in the high-temperature water section at the top of the hot water storage tank 1 by driving the bath pump 7. It is designed to catch up with heat exchange.

  When supplying high-concentration oxygen to the bath 5, the intake fan 10 is driven to introduce a large amount of air to the oxygen-enriched film 9, and the vacuum pump 11 connected to the oxygen-enriched film 9 is driven to enrich the oxygen. Only oxygen is sucked from the air passing through the membrane 9 and mixed from the oxygen supply port 13 provided in the bath outlet pipe 12 of the reheating path, thereby releasing the high-concentration oxygen bubbles 14 into the bathtub 4 to form an oxygen bath. . At this time, when the bath pump 8 is operated, the high-concentration oxygen bubbles 14 can be efficiently diffused into the bathtub 4.

  Further, a check valve unit 15 is provided between the vacuum pump 11 and the oxygen supply port 13 in order to prevent reverse flow of the bath water.

  The oxygen enrichment apparatus includes a case 17 in which a flange 16, an oxygen enrichment film 9, and an intake fan 10 are fixed in the upper part of the interior of the chamber. The oxygen enrichment apparatus is fixed to the trunk of the tank 1 by a tank support fitting 18.

  The outer periphery of the flange 16 is made of a synthetic rubber having excellent weather resistance, and a flange packing 16-1 of an independent foam is attached. When the front plate 4 is attached, the flange 16 is compressed about twice, The airtightness and watertightness of the joint between the front plate 4 and the oxygen enricher are ensured, and the airtightness is maintained no matter how many times the front plate 3 is repeatedly attached and detached for the construction and maintenance of hot water supply pipes and electrical work. The initial performance can be stably maintained without any deterioration in the water and water tightness.

The flange 16 has a deep dish shape, and an air introduction portion that provides a sufficient space for communication between the louvered air intake 4-1, the oxygen-enriched membrane 9, and the intake fan 10 at a position lowered by one step. 16-2 is formed. The oxygen-enriching device fixed to a stable tank that has a large mass and strength and absorbs minute operating vibrations should ensure a sufficient sealing surface between the front plate 4 and the flange 16 and the flange packing 16-1. Therefore, with a simple configuration that does not add a special sealed path, it is possible to achieve both necessary air intake and prevention of unnecessary air and rainwater intrusion into the exterior housing 3, The electrical insulation inside the main body deteriorates, and it is possible to solve the problem of electric leakage or failure of the hot water storage water heater itself. Further, the air intake 4-1 is configured not to directly face the oxygen-enriched membrane 9 and the intake fan 10, but at a position lowered by one step. Even when the inlet 4-1 is washed with high-pressure water, it is considered that water droplets hit the air inlet 16-2 and are discharged again from the air inlet 4-1 so that water droplets do not enter the oxygen enricher. ing. For this reason, it is possible to achieve both the intake of necessary air and the prevention of unnecessary rainwater and washing water from entering the interior of the exterior housing 3, and small animals such as bees and frogs can enter the air intake 4-1. Even if a nest is formed by entering the inside, it can be cleaned with high-pressure washing water, etc., and a failure caused by blockage of the air introduction part 16-2 or deterioration of internal electrical insulation is prevented in advance. The structure is excellent in maintainability.

  Further, the bottom surface of the case 17 has a downward slope toward the front plate 4, and a communication path from the bottom surface of the case 17 to the air introduction portion 16-2 of the flange 16 and the air intake port 4-1 of the front plate 4. Are configured to have a downward slope, and even if moisture is sucked into the inside of the case 17 of the oxygen-enriching device, the oxygen-enriched film 9 and the intake fan 10 are not submerged, and the water droplets are generated on the front plate 4. In addition to being able to improve the durability of the oxygen enrichment device, it is possible to prevent sanitary deterioration due to unnecessary water accumulation, and the oxygen supply port 13 from the oxygen enrichment device, Sanitary safety to the path leading to the bath outlet pipe 12 and the bathtub 4 is ensured. In addition, the flange 16 may be coated with a weather-resistant resin, preventing rust generation and adhesion of foreign matter, and realizing aesthetics and deterioration of hygiene.

  In addition, the paint of the flange 16 may be mixed with a factor that small animals do not like, for example, a substance containing a pepper component, etc., and the air intake 4-1 that prevents entry of rainwater etc. is a place where small animals can easily nest. However, this can be prevented by adhering these substances to the flange 16 viewed from the air intake 4-1, and the air flow and constant noise caused by operating the intake fan 10 periodically. It is also possible to prevent this.

  Further, when the front plate 4 is fixed with the screw 4-2, the metal portion of the flange 16 may be covered with the flange packing 16-1 so that the metal does not come into contact with the flange packing 16-1. -1 is in a compressed state, and if it is made of a material having vibration-proofing properties in addition to airtightness and watertightness, it is difficult for the vibrations of the oxygen enricher to be transmitted to the front plate and the outer casing. Since the chemical conversion device has a large mass and strength and is fixed to a stable tank 1 that absorbs minute operation vibrations, the noise level as a hot water storage water heater can be suppressed.

  As described above, the hot water heater according to the present invention has a structure that improves the hermetic seal between the oxygen enrichment device and the air intake port of the front plate. It is possible to realize oxygen-mixed operation with a simple structure, and has the merit that the device can be downsized and has excellent maintainability, and it is supplied based on late-night power or hourly rate system It can be applied not only to a hot water heater that uses hot water to boil hot water, but also to equipment that stores hot water using gas, oil, solar heat, etc., and performs bath operation using the hot water.

Overall configuration diagram of a hot water storage type hot water heater in Embodiment 1 of the present invention Detailed view of oxygen enrichment apparatus in Embodiment 1 of the present invention External view of hot water storage type water heater in Embodiment 1 of the present invention Configuration diagram of a conventional oxygen supply device

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Tank 3 Exterior casing 4 Front plate 4-1 Air intake 5 Bath 9 Oxygen-rich film 10 Intake fan 11 Vacuum pump 16 Flange

Claims (3)

A substantially rectangular exterior housing that front is open, the front plate removable having intakes minimum air with shielding the front of the outer housing, a tank for hot water storage a predetermined amount of heated water, A bath circuit for supplying hot water in the tank to the bathtub, an oxygen supply film that has an air supply / discharge port and generates high-concentration oxygen inside, and an intake fan that guides air to the oxygen enrichment film and oxygen enrichment device, the gas generated by the oxygen-enriched device sucked by a vacuum pump and a mixing means for mixing the bath circuit, together with the oxygen-enriched device is secured to the tank, the air supply The hot water heater is characterized in that the exhaust port is in close contact with the back surface of the front plate, and the air intake port is disposed at a position lower than the oxygen-enriched membrane and the intake fan . The hot-water storage water heater according to claim 1, wherein the air supply / discharge port has a flange shape, and a substance containing a factor that is not preferred by small animals is attached to the flange-shaped air supply / discharge port . The hot water storage type water heater according to claim 1 or 2, wherein the flange-shaped air supply / exhaust port is brought into close contact with the front plate through a vibration-proof sealing material .

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