JPS5825181Y2 - water heater - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a water pressure reactor for a gas water heater, a water drainage structure for water channels, etc.

Conventional configuration and its problems In conventional water heaters, water from the waterway was drained by opening a part of the waterway as necessary. The water remaining in the low pressure chamber of the vessel is
Due to its surface tension, there was a problem in that it could not be removed and would freeze.

As an example of countermeasures against this problem,
In Publication No. 126, a drain pipe from the lower part of each water pressure chamber partitioned by a diaphragm of a water pressure actuator connected to a water supply pipe is connected to a drain valve body having two valve holes, and these two
It was proposed that the valve holes could be opened and closed simultaneously by a single drain plug with a drainage hole.

Purpose of the invention The present invention is a water boiler using a bypass mixing method (a method in which water that bypasses the heat exchanger is mixed with the hot water heated by the heat exchanger to obtain a suitable amount of hot water), which replaces the water draining structure of the above-mentioned general water heater. To provide a water heater which has a small number of parts and can drain water from a water channel and a hydraulic reactor more completely by improving the water heater by applying it to a water heater.

Structure of the invention In order to achieve the above object, the water heater of the invention is divided into a high pressure chamber and a low pressure chamber by a diaphragm, and the high pressure chamber and the low pressure chamber are connected to the water pressure section communicating with the high pressure section and the low pressure section of the waterway. A reactor, a main waterway having a heat exchanger corresponding to a heater that is placed on the side in response to the hydraulic reactor, and a bypass that communicates with the mixing section on the outlet side of the main waterway without passing through the heat exchanger. It consists of a hot water temperature control valve that controls the opening degree of the bypass passage by rotation and opens and closes the drainage passage led from the low pressure chamber by axial displacement. Water can be drained from the high-pressure chamber and the low-pressure chamber at the same time with a single hot water temperature adjustment tap.

Description of examples An embodiment of the present invention will be described below based on the drawings.

In the figure, reference numeral 1 denotes a hydraulic reactor in which a high pressure chamber 3 and a low pressure chamber 4 are divided by a diaphragm 2, and the high pressure chamber 31 has a heat exchanger 5 in the middle, and its tip is connected to a mixing section 6. The main waterway 7 communicates with the low pressure chamber 4, and the low pressure communication path 9 leads from a venturi portion 8 formed in the main waterway 7.

10 is a valve seat formed on the way to the high pressure chamber 3 of the main waterway 7;
A governor 11 controls the degree of opening of the valve seat 10 in response to the diaphragm 2.

Further, the diaphragm 2 is linked with an operating rod 12 for controlling a heater (not shown) such as a burner installed opposite to the heat exchanger 5.

Now, 13 is a bypass path that does not pass through the heat exchanger 5 but reaches the mixing section 6, and in the middle of this path there is a taper-shaped hot water temperature adjustment valve 14.
is the provision.

As shown in FIG. 2, the hot water temperature regulating plug 14 is in close contact with a tapered hole 151 formed in the middle of the bypass passage 13 via a spring 16, and its rotation causes the taper provided in the circumferential direction of the peripheral wall to close. The groove 17 changes the opening degree of the bypass path 13.

In addition, one end is connected to the low pressure chamber 41 through the tapered hole 15,
A water drain passage 19 is provided, the other end of which communicates with an air vent hole 18 formed axially forward of the hot water temperature adjustment valve 14.

This water drain passage 19 is normally closed with an O-'J song 0 provided at the tip of the hot water temperature adjustment tap 14, but once the tap 14 is pulled against the spring 16, it can be opened. It is composed.

In the above configuration, when water now flows into the main waterway 7, a pressure difference occurs between the high pressure chamber 3 and the low pressure chamber 4, and as a result, the diaphragm 2 is displaced to the low pressure side.

The heater is activated by the displacement of the diaphragm 2, so that the water flowing through the main waterway 7 becomes hot water in the heat exchanger 5 and reaches the mixing section 6.

Cold water flows into the mixing section 6 via a bypass path 13, and the hot water is mixed with this cold water and discharged at an appropriate temperature.

Here, the temperature of the hot water can be adjusted by rotating the hot water temperature adjustment valve 14 to adjust the amount of bypass water.

Next, if you plan to stop operating the water heater for a long time in the winter,
Pull the hot water temperature adjustment plug 14 toward you against the spring 16 as shown in the figure.

Then, the residual water in the high pressure chamber 3 and the like is directly discharged from the atmosphere opening hole 18, and the residual water in the low pressure chamber 4 is discharged from the atmosphere opening hole 18 through the water drain passage 19.

Of course, except for the tensile force, the hot water temperature control valve 14 returns to its original state by the action of the spring 16, closing the thread path for draining the water, so that there is no problem in restarting the water heater. be.

Effects of the invention As described above, according to the invention, water can be reliably prevented from draining, especially in the low pressure chamber of a water pressure reactor, by using a hot water temperature control valve. It has a simpler structure than the one with a water drain plug added to it, and also eliminates operational errors.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a water heater, particularly a water pressure reactor portion, in an embodiment I of the present invention, FIG. 2 is a sectional view of a hot water temperature regulating tap portion, and FIG. 3 is an explanatory view of the same operation. 1...Hydraulic reactor, 2...Diaphragm, 3...High pressure chamber, 4...Low pressure chamber, 5
...Heat exchanger, 6...Mixing section,
7...Main waterway, 13...Bypass path,
14...Hot water temperature adjustment valve, 19...Water drain channel.

Claims (1)

[Scope of utility model registration request] A diaphragm divides the chamber into a high pressure chamber and a low pressure chamber, and
The high-pressure chamber and the low-pressure chamber have a hydraulic reactor communicating with the high-pressure part and the low-pressure part of the waterway, a main waterway having a heat exchanger corresponding to a heater controlled in response to the hydraulic reactor, A bypass path that communicates with the mixing section on the hot water outlet side of the main waterway without passing through the heat exchanger, and the opening degree of the bypass path is controlled by rotation, and the water drain path led from the low pressure chamber is opened and closed by axial displacement. A water heater consisting of a water temperature adjustment tap.