JPS6262125A - Gas instantaneous hot-water heater - Google Patents

Abstract

PURPOSE:To facilitate a gas pressure adjusting operation, reduce the number of steps of inspection and time required for performing a changing of gas by a method wherein a flow rate of gas flowing through a main nozzle and a pilot nozzle is controlled by one gas burner. CONSTITUTION:A main valve 3, a main governor 7 and a hydraulic pressure responding valve 10 are arranged in a gas passage between a gas connection port 1 and a main burner 13, gas for a pilot nozzle 14 is supplied through a pilot gas passage 8b branched from a main gas passage 8a extending toward the main nozzle 12. Then, a control over a flow rate of gas for the pilot nozzle 14 and a control over a flow rate of gas for the main nozzle 12 are performed through the main gas governor 7, and a setting of pressure in the pilot nozzle 14 is dependent upon a pressure adjustment of the main gas governor 7. In this way, the pilot gas passage 8b communicating with the pilot nozzle 14 is branched from a secondary side of the main gas governor to enable the flow rate of gas in the pilot nozzle to be controlled, and at the same time it is possible to reduce the number of steps of inspection in a manufacturing process and to shorten the changing operation under a simplified gas changing operation.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention 1 relates to a gas instantaneous water heater equipped with an incomplete combustion prevention device.

Conventional technology In recent years, water heaters for home kitchens have begun to come equipped with incomplete combustion prevention devices to prevent indoor oxygen deficiency and heat exchanger fin clogging.
In particular, the ignition method is continuous discharge, and moreover, the direct ignition method is increasing, and safety, usability, and energy saving are also improving.

Under these circumstances, the role of the pilot burner was previously used as a heat source for transferring the flame to the main burner, but as water heaters equipped with incomplete combustion prevention devices began to become popular,
The role of the pilot burner has changed from being a transfer heat source to being incorporated into the incomplete combustion prevention system.

Hereinafter, a gas passage configuration of a conventional gas instantaneous water heater with an incomplete combustion prevention device will be described with reference to the drawings.

Figure 4 (1) shows the gas connection port, and (2) shows the thermo valve, which is held by the electromotive force generated by the thermocouple. (3) is the main pulp, and (4) is the rondo. (5) is a governor pressure adjustment screw, (6) is a pressure adjustment spring, and (7)' is a main gas governor. (9) is a water valve that operates by water pressure, and 0 is a water pressure responsive valve. aυ is the gas amount switching axis, a'a is the main nozzle, opposite is the main burner, α◇ is the pilot nozzle, and a9 is the pilot bar.
It is na. 27a and 27b are pilot gas passages. (to) is the pilot gas governor, ■ is the pressure adjustment spring of the pilot gas governor, and (7) is the pressure adjustment screw.

The operation of the gas instantaneous water heater equipped with an incomplete combustion prevention device having the gas passage configured as described above will be explained.

The main pulp (3) and the thermo valve (2) move when pushed or turned during the ignition operation to move the rondo (4).
is opened, and at the same time discharge starts and pilot burner α is ignited. On the other hand, to ignite the main burner αJ, the hydraulic response valve Ql is opened by the hydraulic response body (9) moved by water pressure, and the gas entering from the gas connection port passes through the gas amount switching shaft αυ, passes through the main nozzle 02, and then enters the main burner. It flows to αj and is ignited by an ignition source. Conventionally, after passing through the main pulp (3), gas governors (7)' and (7) were separately provided to control the gas flow rate of the main nozzle α2 and the gas flow rate of the pilot nozzle α→.

Problems to be Solved by the Invention However, in the above configuration, the main nozzle # (
Since a gas governor is provided for each of the gas flow controls of the 12N pilot nozzle α, 1) the girth pressure adjustment work in the manufacturing process becomes complicated and the number of inspection steps increases;

2) Management becomes complicated as the number of parts increases.

3) There are many gas conversion parts, which complicates the work at the conversion site and increases the conversion time.

There was a problem.

Means for Solving the Problems The present invention provides a gas passage connected between a gas connection port and a main nozzle of a main burner, and connects a main pulp, a main governor, and a hydraulic pressure reactor to the gas passage in order from the gas connection port. A valve is disposed to branch a pilot gas passage reaching a pilot nozzle into a gas passage between the main gas governor and the hydraulically responsive valve, and a throttle valve is provided in the pilot gas passage.

Function The gas instantaneous water heater of the present invention has a main gas passage and a pilot gas passage on two sides of the outlet of the main governor, and controls the gas flow rates of the main nozzle and the pilot nozzle, respectively, with one gas governor. It simplifies pressure adjustment work and reduces inspection man-hours and gas conversion time.

Embodiment FIG. 1 shows a first embodiment of the gas passage of the gas instantaneous water heater of the present invention, and FIG. 2 shows a purchasing diagram of the gas instantaneous water heater of the present invention.

In view of the conventional problems, the present invention provides a gas instantaneous water boiler that 1) reduces inspection man-hours in the manufacturing process, 2) simplifies parts management, and 3) simplifies gas conversion work and shortens gas conversion time. It provides equipment.

In FIG. 1, the same symbols as in FIG. 4 indicate the same parts.

The operations of parts (1) to (6) are the same.

(7) is a main gas governor that controls the gas flow rate of the pilot nozzle α and the main nozzle O2.

Gas to the pilot nozzle α→ of the present invention is supplied through a nozzle gas passage 8b branched from the main gas passage 8a leading to the main nozzle O2.

The gas instantaneous water heater of the present invention is shown in Figures 1 and 2 below.
The operation will be explained using figures.

Rondo (by pressing or pushing and turning the ignition
4) moves and the main pulp (3) and thermo valve (2) move.
) is pushed open. Almost at the same time, discharge is started by the ignition circuit, and the gas that enters from the gas connection port passes through the main gas governor (7) and is ejected from the pilot nozzle 04. Due to the ejector effect, the gas-air mixture is turned into the pilot burner (1!9). Made by the spark plug 22 in the ignition circuit
The pilot burner 09 is ignited by the spark discharge a. After ignition, the thermovalve (2) is held by the electromotive force of the thermocouple (04). On the other hand, the water pressure responsive diaphragm of the water valve 0υ moves via the water governor αη by opening and closing the water stop valve αQ. By opening the water stop valve αe, the diaphragm of the water valve marked a moves to operate the hydraulic response rod (9), and the hydraulic response valve 0 is activated.
υ is opened, gas is ejected from the main nozzle az of the nozzle holder CD via the gas amount switching axis aυ, and ignited by the ignition source.
The main burner 0'5 burns. In addition, the water that has passed through the water pulp (type 1) passes through the water volume adjustment valve α1, and the hot water that has been heat exchanged with the heat exchanger (a) comes out from the hot water supply port (c).

When the room becomes oxygen-deficient, the flame of pilot burner α9 lifts, lowers the electromotive force of the thermocouple attached to pilot burner a9, shuts off thermovalve (2), and stops the gas supply. In addition, if the fins of heat exchanger ■ become clogged, the electromotive force of the reverse bias thermocouple connected in reverse series to the thermocouple attached to pilot burner A9 increases, shutting off thermovalve (2) and stopping the gas. .

Here, the gas flow rate control of the pilot nozzle α1 and the gas flow rate control of the main nozzle α2 are performed by a main gas governor (7), and the secondary side circuit of the main gas governor (7) is divided into two systems. The pressure setting of the pilot nozzle (Is) depends on the pressure regulation of the main gas governor (7).

As described above, according to the first embodiment of the present invention, the gas flow rate of the pilot nozzle can be controlled by branching the pilot gas passage 8b leading to the pilot nozzle α from the secondary side of the main gas governor. At the same time, it is possible to shorten the number of inspection steps in the manufacturing process and the conversion work by simplifying the gas conversion work σ.

Next, a second embodiment of the present invention will be described with reference to the drawings.

FIG. 3 is a configuration diagram of a gas passage of a gas instantaneous water heater showing a second embodiment of the present invention.

The same symbols as in FIG. 1 indicate the same parts.

The difference from the configuration shown in FIG. 1 is that a throttle valve (a) is provided between the main gas passage 8a and the pilot nozzle Q4) in the middle of the pilot gas passage 8b.

The operation of the second embodiment of the gas instantaneous water heater constructed as described above will be described below. The operation follows FIGS. 1 and 2.

The gas flow rate control for pilot nozzle I and main nozzle α2 is performed using a single main gas governor (7), which is the same as in Fig. 1, but in order to obtain pressure regulation that matches all gas types, there is a A throttle valve (A) is provided to finely adjust the gas flow rate of the pilot nozzle α.

As described above, by providing the throttle valve between the pilot gas passage and the pilot nozzle a4, the pilot nozzle flow rate can be minutely controlled for all gas types.

Effects of the Invention The present invention provides a main gas governor between the main pulp and the hydraulically responsive valve, and a pilot gas passage leading to the pilot nozzle between the main gas governor and the main gas passage leading to the hydraulically responsive valve. 1) The pilot nozzle flow meter control has a simple configuration, 2) The number of inspection steps in the manufacturing process can be reduced, 3) Parts management is simplified and streamlined, 4) Gas conversion work can be done easily, and the conversion time can be reduced. This produces effects such as being able to shorten the time.

[Brief explanation of the drawing]

FIG. 1 is a gas passage configuration diagram of an embodiment of the gas instantaneous water heater of the present invention, FIG. 2 is a configuration diagram of the gas instantaneous water heater of the present invention, and FIG. 3 is a gas passage configuration diagram of an embodiment of the gas instantaneous water heater of the present invention. FIG. 4 shows a main configuration diagram of a gas passage of a conventional gas instantaneous water heater. 1: Gas connection port 2: Thermo valve 3: Main pulp 4: Rod 5: Pressure adjustment screw 6: Pressure adjustment spring 7: Main gas gauge 8a: Main gas passage
8b: Pilot gas passage. Path 8c: Nozzle side pilot gas passage 9: Water pressure responsive body o: Water pressure responsive valve 1]: Gas fA off M axis 12: Main nozzle 13: Main burner 14: Pilot nozzle 15: Pilot burner 16: Water stop valve 17: Water governor 18:
Water valve 19: Water volume adjustment valve 20: Heat exchanger 21: Nozzle holder 22: Spark plug 23
: Ignition circuit 24: Thermocouple 25: Hot water inlet 2G = Reproduction of throttle valve drawing (no change in content) JlI2 drawing procedure amendment (method) December 1985
March 16th, Mr. Michibe Uga, Commissioner of the Patent Office 1. Indication of the case: Japanese Patent Application No. 1983-203050 2. Name of the invention: Gas instantaneous water heater 3. Relationship with the person making the amendment: Address of the patent applicant: 185 Tokyo 3-12-11 Minamimachi, Kokubunji City Name (7483) Patent attorney Isao Abe
15 Date of amendment order, C, J

Claims (2)

[Claims] (1) A gas passage is provided that is continuous between the gas connection port and the main nozzle of the main burner, and a main pulp, a main governor, and a hydraulically responsive valve are arranged in the gas passage in order from the gas connection port, and the main gas A gas instantaneous water heater in which a pilot gas passage that reaches a pilot nozzle is branched into a gas passage between a governor and a hydraulically responsive valve. (2) The gas instantaneous water heater according to claim 1, wherein a throttle valve is provided in the pilot gas passage.