JPS6315723Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a hot water storage type water heater that circulates and boils hot water in a hot water storage tank using a heat source device.

Structure of conventional example and its problems Conventionally, in this type of water heater, as shown in FIGS. 1 and 2, the drain port 12 of the hot water storage tank 1 and the drain port 12' of the heater 3 are provided arbitrarily. Therefore, when opening the drain valve and periodically removing residual sediment from the hot water storage tank 1 and the heater 3, each operation must be performed, which is cumbersome, and it is difficult to operate one drain valve. There were many cases where this was not done.

For this reason, there have been problems in that the circulation pump 2 provided in the heater 1 may stop due to garbage accumulation, or may be damaged due to drainage leakage or freezing on the side of the heater 1 in winter.

Purpose of the invention The present invention aims to solve these conventional problems by removing the scale generated in the heater, eliminating the locking of the circulation pump due to dirt, and also eliminating the problem of the heating by only draining water from the hot water tank. The purpose of the present invention is to provide a highly reliable and easy-to-operate water heater that also enables water drainage.

Composition of the invention To achieve this purpose, the invention consists of a hot water storage tank and a heater, and the hot water storage tank is connected to a water supply port, a drain port, a hot water supply port, and a heater for circulating boiling. Provide entrances and exits for
The drain port is provided below the inlet/return port, the water supply port and the drain port are provided on one side of the hot water storage tank, and the inlet/return port is provided on the opposite side, and the heater is It is connected. With this configuration, the scale generated in the heater is discharged to the bottom of the tank by the action of the circulation pump during boiling operation, and remains there.
When draining water from the tank, it is possible to drain the water from the heater and the water at the same time due to the height difference.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings.

As shown in FIG. 1, a system according to an embodiment of the present invention is composed of a hot water storage tank 1, a circulation pump 2, a heat exchanger 3, a compressor 4, and a heat collector 5.

As shown in FIG. 3, the heat exchanger 3 is constructed so that the water circuit side 6 and the heat medium side 7, which is a heater, are in close contact with each other to facilitate heat transfer.

The heating medium gas circulates in the heater, and the heat medium gas evaporates and absorbs heat in the collector 5, which leads to the compressor 4, where it becomes high-pressure gas and is led to the heat exchanger 3, where it releases heat to the water circuit side 6, condenses, circulates to the collector 5, and then collects heat again. The water circuit side 7 is where heated water is pumped to the hot water storage tank 1.
The water is led to the return port 8 of the hot water storage tank 1, and from the outflow port 9 at the bottom of the hot water storage tank 1, the water is circulated to the heat exchanger 3 by the circulation pump 2.
The water is then reheated and circulated to bring it to a boil.

The hot water storage tank 1 is provided with a water supply port 10 at the bottom and a hot water supply port 12 at the top, and the hot water stored in the hot water storage tank 1 is pushed up by the water pressure and discharged from the hot water supply port 11.

Due to long-term boiling use, hard water in the water supply is formed as a precipitate at the bottom of the hot water storage tank 1.
A drainage port 12 is provided for the purpose of removing this sediment 11a and for maintenance.

This drain port 12 is provided at a lower portion than the outgoing port 9 and return port 8 provided for circulation boiling.

In the above configuration, by providing the drain port 12 at a lower part than the circulation boiling inlet 9 and return port 8, the sediment 11a generated in the hot water storage tank 1 can be removed.
However, the water flows into the circulation pump 2 and the heat exchanger 3, eliminating problems such as pump locks and pipe clogging, and conversely, the sediment generated in the heat exchanger 3 also circulates to the bottom of the hot water storage tank 1. It can be imported.

Furthermore, by operating the drain port 12, water can be drained from the heat exchanger 3 as well as from the hot water storage tank 1, so there is no need for the drain operation on the heat exchanger side as in the conventional example, making it easy to handle. It has the effect of saying.

In addition, the exterior case covering the hot water storage tank 1 has a square configuration, with a circulation boiling inlet 9 and a return port 8 on one side, and a water supply port 10 and a drain port 12 on the opposite side.
By providing a hot water storage tank 1 and a heat exchanger 3, when actually installed in the residential area, the hot water tank 1 and the heat exchanger 3 can be installed along the wall of the house, and the passage between it and the boundary around the residential area can be installed in the front direction. It can be constructed without any obstruction caused by protruding piping.

Effects of the invention According to the water heater of the invention, the following effects can be obtained.

(1) By locating the drain port lower than the outgoing and return ports for circulating boiling, the sediment generated in the heat exchanger and circulation pump can always be collected at the bottom of the hot water storage tank.

(2) Also, the water inside the heat exchanger can be easily drained by draining the tank side.

(3) By providing the drainage port and the circulation inlet on opposite sides, the floating scale that forms inside the heat exchanger passes through the return port and is more likely to settle near the drain port due to its flow force. , the sediment can be easily drained from the drain.

(4) By providing the water inlet and the circulation inlet/return outlet on opposite sides, the water supplied during hot water will flow from the inlet to the outlet, allowing cold water to circulate smoothly. It can be heated and the heat exchanger can be improved.

[Brief explanation of the drawing]

FIG. 1 is a system diagram showing an embodiment of the present invention.
FIG. 2 is a side view showing a conventional example, FIG. 3 is a side view of an embodiment of the present invention, and FIG. 4 is a partial sectional view of an embodiment of the present invention. 1... Hot water storage tank, 8... Return port, 9... Outgoing port, 10... Water supply port, 12... Drain port.

Claims (1)

[Scope of utility model registration request] The hot water storage tank is composed of a hot water storage tank and a heater, and the hot water storage tank is provided with a water supply port, a drain port, a hot water supply port, and an inlet/return port for connecting to the heater for circulating boiling. The drain port is provided below the mouth, the water supply port and the drain port are provided on one side of the hot water storage tank, and the inlet and return ports are provided on the side opposite to the water supply port and the drain port, and the heating A water heater connected to a water heater.