JPS6027295Y2 - Hot water supply hopper for hot water bath kettle - Google Patents

Description

[Detailed description of the invention] This invention prevents dirty water (bathwater) from flowing back into city water in a hot water bath kettle in which water or hot water heated by a water heater is dropped into the bathtub through the heat exchange circuit of the bath kettle. This relates to a hot water hopper and is intended to prevent noise caused by air being mixed in when water is poured.

First, an example of a hot water supply type bath pot according to the present invention will be explained with reference to FIG. 1. 1 is a water heater, 2 is a bath heater;
A heat exchanger 3 constituting the bathtub 5 is connected to a bathtub 5 via a circulation pipe 4.

A water supply pipe 7 on the upstream side of the heat exchanger 6 of the water heater 1 is connected to the city water supply, and a water supply pipe 8 on the downstream side is led to a hot water usage area.

From the middle of this hot water supply pipe 8, the heat exchanger 3 of the bath heater 2 is connected.
A bath hot water supply pipe 9 that communicates with the interior is branched, and the bath hot water supply pipe 9 has a hot water supply valve 10 such as a solenoid valve that opens when hot water is poured into the bath water supply pipe 9.
Also, a hopper 1 for preventing backflow is provided below the hot water supply valve 10.
1 is provided.

The hopper 11 is cylindrical and funnel-shaped, and is always in communication with the atmosphere through an overflow port 12 opened in the side wall, and serves as a barrier between city water and bath water.

13 is a discharge port at the lower end of the hopper 11.

Reference numeral 14 denotes a water inlet for dropping hot water from the hot water supply valve 10 into the hopper 11, and a distance is placed between the lower end of the water inlet 14 and the upper end of the overflow port 12, making this part an open space 15 to the atmosphere.
This works as cross cost cushion prevention.

Reference numeral 16 denotes a rectifying plate installed horizontally within the space 15 at a distance from the lower end of the water inlet 14 so as to divide the inside of the hopper 11 into upper and lower sections.
The upper and lower sides are communicated with each other by a through hole 17 opened at a position offset to the outside of the rectifying plate 16, and in the embodiment, the through hole 17 is provided in an arc shape around the rectifying plate 16.

Reference numeral 18 indicates the current plate 16 so as to surround the through hole 17.
It is a guide tube installed vertically on the lower surface, and its lower end is connected to the overflow port 1.
The position is slightly lower than the upper end of 2.

In this configuration, the bath water supply pipe 9 is opened by opening the hot water supply valve 10.
The hot water that flows through the hopper 11 is dropped into the bathtub 5.

However, in the past, the baffle plate 16 was not provided, and the hot water spouted from the water inlet 14 fell directly into the outlet 13, so air was easily drawn in at this time, causing the sound of running water mixed with air and the bathtub. It was forming bubbles inside 5, making a loud thumping noise.

Therefore, in the present invention, a rectifying plate 16 is provided to temporarily stop receiving the water spouted from the water inlet 14, and after rectifying the flow, the water is dropped into the hopper 11 from the through hole 17, so that the flow velocity decreases when it exits the through hole 17. In addition, the flow velocity is further weakened when it hits the lower wall of the hopper 11' and flows into the discharge port 13, which greatly reduces the amount of air that is mixed in, which was previously violently drawn in especially at the discharge port 13. This makes it possible to reduce the water passing sound as well as the noise inside the bathtub.

As described above, according to the present invention, in the hopper that prevents sewage from bathtubs from backflowing into city water, it is possible to greatly reduce the amount of air mixed in with the water injection flow, so that a flow mixed with air is emitted. It is possible to reduce the sound of water flowing as well as the noise generated by mixed air forming bubbles in the bathtub, which is very effective in making this type of hot water supply type bathtub quieter.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram showing an example of a hot water supply type bath pot according to the present invention, and FIG. 2 is a longitudinal cross-sectional view of a main part showing an embodiment of the present invention. 2...Bath heater, 3...Heat exchanger,
8... Hot water supply pipe, 9... Bath hot water supply pipe, 1
1...Hopper, 12...Overflow port, 1
3...Discharge port, 14...Water inlet, 16
・・・・・・Rectifying plate, 17・・・Through hole.

Claims (1)

[Scope of utility model registration request] A hopper to prevent backflow installed in a bath water supply pipe that branches from the water supply pipe to the inside of the heat exchanger of the bath heater, and has a water inlet at the top, a discharge port at the bottom, and an overflow port on the side wall. In the cylindrical hopper equipped with a cylindrical hopper, a rectifying plate is installed horizontally at a certain distance from the lower end of the water inlet so as to divide the inside of the hopper into upper and lower parts. A hot water hopper for a hot water bath kettle characterized by having a through hole opened at a shifted position.