JPS6023729A - Water heater - Google Patents

Abstract

PURPOSE:To prevent an abnormal noise in a water controlling device, by providing a spring to the inside wall of a bypass passage which is contacted by a ball, on the surface of which a buffering material is coated. CONSTITUTION:A spring 9 is provided to the inside wall of a bypass passage 4 which is contacted by a ball 6 coated with a buffering material 8, while the tip of a spring 10 is bent as shown in the drawing. Leaving the hot-water temperature controlling knob 3 in a water body 1 open and when the outdoor temperature goes down below the freezing point, a low temperature actuated draining device 2 functions to drain water. But the ball 6 remains seated on a ball seat 7 because the drained water is only a small quantity and the specific gravity of a ball is large as it is made of metal. Usually, when a water heater is used, the ball 6 is floated up separating from the ball seat 7 and is stopped by the tip of a spring 10. At that time the ball 6 hits the wall surface of a bypass passage 4. But in this case abnormal noises caused by the ball 6 contacting with a metal can be prevented, because the ball 6 is coated with the buffering material 8, and the spring 9 is provided to the inside wall of a bypass passage 4 being in contact with the ball 6.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a water controller, and in a water body that has a ball right above a hot water temperature control knob, water flows from a bypass passage and the ball rises, causing the ball to float on the wall of the bypass passage. This relates to the structure of the water body that prevents abnormal sounds from being generated when it hits the water.

Recently, there has been an increase in the number of water heaters that are installed outdoors due to concerns about safety and installation space. The low-temperature water drain actuator 2 shown in the figure is attached to the hot water outlet side of the water heater to prevent water from draining from the low-temperature water drain actuator 2 and the equipment from freezing and breaking when the outside air drops below freezing.

Furthermore, if the outside temperature is below freezing and the low temperature water drain actuator 2 is activated with the hot water temperature control knob 3 of the water body 1 open to open the bypass passage 4, water will flow to the bypass passage 4 side. , does not flow to the heat exchanger 5 side, and therefore the heat exchanger 6
In order to prevent water from freezing and breaking, a ball 6 is provided at the bottom of the hot water temperature control knob 3 of the water body 1 to prevent water from flowing to the bypass passage 4 side when the low temperature water drain operation device 2 is operating. I tried not to.

However, in the above structure, when the hot water temperature control knob 3 of the water body 1 is opened and a normal water heater is used, the ball 6 rises due to the differential pressure when the water volume is within the operating range of the water body 1.
Since the water flows through the bypass passage 4, the ball 6 hits the wall surface of the bypass passage 4 at that time, causing abnormal noise.

The present invention eliminates the above-mentioned conventional drawbacks, and embodiments thereof will be described below with reference to the accompanying drawings.

In FIG. 4, a rubber or resin cushioning material 8 is coated around a metal ball 6, and a spring 9 is provided inside the wall surface of the bypass passage 4 that comes into contact with the ball 6. In order to prevent the
The tip of the ball 6 is bent and the ball 6 stops at the bent point.

In the above structure, when the outside temperature drops below freezing with the hot water temperature control knob 3 of the water body 1 open, the low temperature water drain operation device 2 operates to drain water, but the amount of water is small and the ball 6 is Since it is metal and has a high specific gravity, the ball 6 is attached to the valve seat part 7.
I'm in a hurry.

Therefore, all the water that has passed through the water body 1 flows through the heat exchanger 5, so that the heat exchanger 6 will not freeze and be destroyed even if the temperature drops below freezing.

Next, when using a normal water heater, the amount of water flowing through the water body 1 increases, so a pressure difference is generated between the part where the water enters the water body 1 from the heat exchanger 5 and the bypass passage part 4, and the ball 6 is separated from the valve seat portion 7 and floats up, and is stopped at the tip of the spring 1o.

At that time, the ball 6 hits the wall of the bypass passage 4,
Since the ball 6 is coated with a cushioning material 8 and the spring 9 is provided inside the wall surface of the bypass passage 4 that comes into contact with the ball 6, abnormal noise due to contact between the ball 6 and metal is eliminated. .

As described above, according to the present invention, the following effects can be obtained.

1 When the hot water temperature control knob 3 of the water body 1 is open and the outside temperature drops below freezing and the low temperature water drain operation device 2 is activated, all the water flows through the heat exchanger 5, so the heat exchanger 6 freezes. It will not be destroyed.

2 When using the water heater with the hot water temperature control knob 3 open, the ball 6 comes into contact with the wall surface of the bypass passage 4, but because the ball 6 is coated with a cushioning material 9, the ball 6 Since the spring 9 is provided inside the wall surface of the bypass passage 4 that comes into contact with the bypass passage 4, the generation of abnormal noise is eliminated.

[Brief explanation of the drawing]

Figure 1 is a cross-sectional view of the water passage of a water heater using a bypass mixing type water body, Figure 2 is a cross-sectional view of the bypass mixing part of a ball water sealing body, and Figure 3 is a cross-sectional view of a water heater using a water heater that uses a normal water heater. 4 is a sectional view of the bypass mixing section of the water controller in an embodiment of the present invention, and FIG. 5 is a plane view of the spring. It is a diagram. 1...Water body, 2...Low temperature water drain operation device, 3...Hot water temperature adjustment knob, 4...
Bypass passage, 5... Heat exchanger, 6...
・Ball, 7... Valve seat, 8... Cushioning material, 9, 10... Spring.

Claims (2)

[Claims] (1) A water temperature control knob of the water pod is equipped with a ball coated with a cushioning material and a valve seat portion that receives the ball, and a spring is provided inside the wall surface of the bypass passage that the ball comes into contact with; A water controller having a spring with a bent tip above the spring to prevent the spring and ball from jumping out of the water pod. (2) The inside of the ball is made of metal with high specific gravity,
The ball is coated with a cushioning material such as rubber or resin9, and when the water temperature control knob is open and the low-temperature water drain device is working, the bypass passage is closed and the water pod's operating range is In terms of water volume, the ball is floated by the differential pressure, the bypass passage is opened, and the water is allowed to flow to the bypass side.The ball is coated with a cushioning material, and has a spring on the wall of the ball and the bypass passage. The water controller according to claim 1, which does not generate abnormal noise even when it comes into contact with a wall surface.