JPS62183722A - Hot water feeder - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a water heater that uses a centrifugal pump to dispense hot water.

Conventional technology Conventionally, this type of electric water heater has generally used a bellows pump driven by a motor or the like to pump air into a container and pour out hot water from the container. there were.

Problems to be Solved by the Invention However, the conventional electric water heater described above pumps air into the container and pressurizes the air in the container to discharge hot water. In some cases, the pressure inside the container becomes abnormally high due to the vapor pressure of the hot water.
Even if a small amount of air is pumped, a larger amount of hot water than expected may be discharged, and when the remaining hot water in the container becomes low, a mixture of air and hot water will come out from the discharge port. There is a problem that hot water may splash and cause burns.

The present invention solves these problems and aims to provide a water heater that directly discharges hot water using a centrifugal pump.

Means for Solving the Problems In order to solve the above problems, the present invention connects a centrifugal pump to the inner bottom surface of a hot water storage container, and provides a bubble removing member that covers the suction port and eliminates air bubbles in the water. It was established.

Effect: According to the above configuration, air bubbles generated during boiling and dissolved in water can be extinguished by the air bubble removing member provided at the suction port of the centrifugal pump at the same time as the air bubbles are sucked in during operation of the centrifugal pump. Water can be directly pumped up using a centrifugal pump, resulting in a stable discharge rate and no splashing of hot water, thus preventing burns.

Embodiment Hereinafter, one embodiment of the present invention will be described based on the accompanying drawings. In FIG. 1, reference numeral 1 denotes an exterior main body of a water heater, in which a container 2 for storing hot water is provided. Reference numeral 3 denotes an inner stopper attached to the container 2 so as to close the mouth thereof. Reference numeral 4 denotes an upper lid attached to the upper part of the exterior main body 1 so as to be able to be opened and closed. Reference numeral 6 denotes a check valve, and this check valve 5 passes through the inner stopper 3 and communicates with the inside of the container 2, and also communicates with the atmosphere through the boiling detection section 6. 7 is a motor provided at the bottom between the exterior main body 1 and the container 2. 8 is a centrifugal pump driven by a motor 7, and its suction port 9 is connected to the inner bottom surface of the container 2 at approximately the center thereof. 1o covers the suction port 9 with a bubble removing member made of a fine wire mesh, a multi-layered filter, or porcelain. Reference numeral 11 denotes a discharge port of the centrifugal pump 8, through which hot water is pumped upward through a discharge pipe 12, and the hot water is pumped upward to the exterior main body 1.
It is designed to be poured into a cup or the like from a spout 13. Reference numeral 14 denotes a heating heater, which is attached to the lower side surface of the container 2.

Reference numeral 16 denotes a starting switch for starting the motor 7, which is activated via a rod 17 when the push button 16 is pressed.

Reference numeral 18 denotes a compression type spring, and this spring 18 always urges the rod 17 upward.

Next, the structure of the centrifugal pump 8 will be explained with reference to FIGS. 2 and 3. Reference numeral 19 denotes an impeller composed of radial blades 2o and magnets 21, and a pump chamber 2 is arranged concentrically on the outer periphery of the impeller 19 with a certain gap t between the impeller 19 and the impeller 19.
2 is formed.

The magnet 21 is opposed to the drive-side magnet 24 via the wall 23 of the pump chamber 22. A drive-side magnet 24 is fixed to the shaft of the motor 7 and is magnetically coupled to the magnets 21 and 24, so that the power of the motor 7 is transmitted to the impeller 19.

The operation of the above configuration will be explained first.

When pouring hot water in a state where hot water is stored in the container 2, the start switch 16 is turned on by pressing down on the push button 16, and the motor 7 is energized. When the motor 7 rotates, the magnets 21 and 24 are electromagnetically coupled, so the impeller 19 rotates and the container 2
The hot water inside enters the pump chamber 22 through the suction port 9 of the centrifugal pump 8 through the bubble removing member 1o. Due to the rotation of the impeller 19, hot water is given a swirl while being pushed outward, and is discharged from the discharge port 11 through the discharge pipe 12 to the outside from the water inlet 13 by centrifugal force.

By the way, in the water heater, when the water is heated by the heating heater 14 and the temperature of the water rises and begins to boil, the air dissolved in the water is actively vaporized on the surface of the heater 14 that comes into contact with the hot water. Then, the generated air bubbles are removed by centrifugal pump 8.
However, in the above embodiment, the air bubble removing member 10 is connected to the suction port 9 of the centrifugal pump 8.
Since this is provided, air bubbles can be extinguished when passing through this member 1o. Therefore, hot water can be discharged by the centrifugal pump 8 without sucking in air. In addition, the suction port 9 is the bubble generating part (heater side)
By connecting it to the inner bottom surface of the container in the approximate center away from the container, consideration is given to preventing air bubbles from being easily sucked in through the suction port 9.

Effects of the Invention As described above, according to the present invention, by adding an air bubble removal member, boiled water can be directly discharged using a centrifugal pump, and as a result, it is possible to directly discharge boiling water using a centrifugal pump. Unlike the discharge method, the discharge amount is stable, and there is no splashing of hot water, so hot water can be supplied without causing burns.

[Brief explanation of drawings]

Fig. 1 is a sectional view of a hot water supply system showing one embodiment of the present invention, and Fig. 2 is a sectional view of a centrifugal pump incorporated in the same system.
Exterior main body, 2... Container, 8... Centrifugal pump, 9... Suction port, 1o... Air bubble removal member, 13... Water inlet, 14... Heater for heating. Name of agent: Patent attorney Toshio Nakao and 1 other person/-
--External and main salary 14゛-home #, work and group

Claims (1)

[Claims] It includes an exterior body, a hot water storage container provided in the exterior body, a heater for heating the water in the container, and a centrifugal pump that lifts the hot water in the container and pours it from the water inlet. . A water heater, wherein a suction port of the centrifugal pump is connected to an inner bottom surface of a container, and a bubble removing member is provided to cover the suction port and extinguish air bubbles in water in the container.