JPS6016803Y2 - steam generator - Google Patents

Description

[Detailed Description of the Invention] The purpose of the invention is to improve the durability of a steam heater.

Up until now, a major problem in terms of durability and performance of steam heaters has been related to scale that forms inside the boiler.

Scale is impurities such as minerals contained in the water that is boiled in the boiler and accumulates on the inner wall of the boiler.It not only deteriorates the thermal efficiency of the boiler, but also clogs the boiler's water inlet and causes the boiler to shut down. This led to problems such as dry burning or clogging of drainage channels, making it impossible to drain water.

The present invention is intended to solve the above problems, and will be described below with reference to the drawings.

1 is an oven that stores and heats the object to be heated; 2 is a boiler that supplies steam to oven 1; 3 is a heater for boiler 2; 4 is a tank that supplies water to the boiler; pipe 5;
It is connected to the water supply and drainage lower of the boiler 2 via a three-way joint 6 and the like.

8 is a case of the tank 4, and 9 is a pipe connecting the oven 1 and the boiler 2.

Reference numeral 10 denotes a rubber pipe constituting a drain section, one end of which is connected to the opening 6a of the three-way joint, and the other end connected to a drain plug 11, which can be opened and closed freely by turning a knob 11a. When the drain plug 11 is opened, water in the boiler 2 and tank 4 is discharged through the three-way joint 6 and the rubber pipe 10.

The three-way joint 6 is provided directly below the water supply and drainage lower of the boiler 2, and has a port 6b connected to the tank 4, a port 6a connected to the rubber pipe 1o of the drain section, a port 6a facing horizontally, and another port 6c. is provided facing the water supply and drainage lower via a rubber pipe 12.

12 is a door body of the oven 1.

Incidentally, the scale attached to the inner wall of the boiler 2 is peeled off due to temperature changes when the heater 3 is operated and stopped, and falls to the bottom of the boiler 7.

However, since the three-way joint 6 is provided directly below the water supply and drainage lower, the peeled off scale and sediment fall to the bottom of the three-way joint 6.

If you operate the knob 11a to open the drain plug 11 and drain the water, the clean water from the tank 4 will wash away the scale pieces and sediment that have accumulated in the three-way joint and drain them from the drain plug 11. Discharging is performed easily and smoothly, and abnormalities in the water supply and drainage to the boiler 2 due to scale accumulation can be prevented.

As explained above, according to the present invention, the following effects can be expected.

1. Boiler scale and sediment can be discharged smoothly, improving the durability of the set and improving safety and reliability.

2 When draining water, the cold water from the tank mixes with the boiler's hot water directly below the boiler's water supply and drainage outlet, so the temperature of the waste water becomes low, and the area through which high-temperature water passes is very small, making it necessary to install heat-resistant water in the drain passage. Since it is not necessary, the design is easy and the cost is low.

3. By constructing the three-way joint with a transparent material, it is easy to observe scales that have fallen into the three-way joint, and the situation inside the boiler can be easily inferred, making maintenance and inspection of the boiler extremely easy.

[Brief explanation of drawings]

Fig. 1 is a perspective view of a cooking appliance equipped with a steam generator showing an embodiment of the present invention, Fig. 2 is a sectional view of the same, Fig. 3 is a schematic view of the main part, and Fig. 4 is a sectional view of the main part. It is a diagram. 1...Oven, 2...Boiler 3
...Heater, 4...Tank, 5...
...Pipe, 6...Three-way joint.

Claims (1)

[Scope of utility model registration request] The oven is equipped with an oven for storing and heating an object to be heated, a boiler for supplying steam to the oven, a tank for supplying water to the boiler, and a drain section for discharging water from the tank and the boiler. Provide a water supply and drainage outlet,
A transparent or translucent three-way joint is provided approximately directly below this water supply and drainage port, and the port connected to the tank and the port connected to the drain part of this three-way joint are located approximately horizontally. A steam generator featuring: