JPH064202Y2 - Liquid fuel combustion device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial field of application> The present invention has a liquid jet nozzle having two types of large and small fuel jet nozzles, and can use one or both nozzles for combustion as required. It relates to a combustion device.

<Prior Art> A conventional apparatus will be described with reference to FIGS. 1 and 3. In a liquid fuel combustion apparatus having two types of large and small fuel ejection nozzles with different ejection capacities, conventionally, a single electromagnetic pump 10 generally divides fuel supplied through a supply passage 20 into large electromagnetic valves (main The flow rate is adjusted by a solenoid valve) 30 and a small solenoid valve (sub solenoid valve) 40 with a small capacity, and passes through a large nozzle conduit (main conduit) 50 to a large nozzle (main nozzle) 70, and a small nozzle conduit ( It is adapted to be supplied to a small nozzle (sub-nozzle) 80 through a sub-conduit) 60. The solenoid valves 30 and 40 and the conduits 50 and 60 are connected as shown in FIGS. 3 (A) and 3 (B). Fig. 3
FIG. 3A is a diagram showing a structure of a connecting portion, and FIG. 3B is a plan view of FIG. 3A. That is, the large solenoid valve 30 and the small solenoid valve 40 are arranged in parallel and are integrally formed, and the large nozzle conduit 50 and the small nozzle conduit 60 are respectively connected to the respective connection ports 31 and 41. Cap nuts 52, 62 provided on 51, 61
It was designed to connect with.

<Problems to be solved by the invention> However, in the above-mentioned conventional device, since the cap nut 52 of the large nozzle conduit 50 and the cap nut 62 of the small nozzle conduit 60 have the same shape and dimensions, the connections may be mistaken for left and right. There was a problem of going.

Therefore, an object of the present invention is to provide a liquid fuel combustion device which eliminates the above-mentioned drawbacks of the conventional device and can prevent erroneous connection with a simple structure.

<Means for Solving the Problems> In order to achieve the above object, the liquid fuel combustion apparatus of the present invention includes two types of fuel injection nozzles, large and small, for ejecting fuel for combustion. To cope with this, two large and small solenoid valves integrally configured in a parallel state and the two
A fuel supply pump for supplying fuel via two solenoid valves,
A liquid fuel combustion apparatus having a large nozzle conduit and a small nozzle conduit that respectively connect the two solenoid valves and the two fuel ejection nozzles, wherein the solenoid valve side connection port of the large nozzle conduit is external. A large diameter cap nut is provided, a small outer diameter cap nut is provided at the solenoid valve side connection port of the small nozzle conduit, and the large diameter cap nut is provided at the connection port with the small solenoid valve conduit. The feature is that a wrong connection prevention pin that is not attached is provided.

<Operation> According to the features of the present invention, even when the conduit for the large nozzle is connected to the small solenoid valve side, the cap nut of the conduit for the large nozzle hits the misconnection prevention pin on the small solenoid valve side and can be rotated. Can not. That is, they cannot be joined. On the other hand, since the connecting cap nut of the small nozzle conduit has a small outer diameter, it can be connected to the small solenoid valve side without being hindered by the misconnection preventing pin. The large solenoid valve side is not provided with an incorrect connection prevention pin and can be connected with the cap nut of the large nozzle conduit. That is, the large nozzle conduit can be reliably connected to the large solenoid valve side, and the small nozzle conduit can be reliably connected to the small solenoid valve side.

<Embodiment> FIG. 1 is an overall configuration diagram of a device embodying the present invention, FIG. 2 (A) is a configuration diagram of a main part, and FIG. 2 (B) is a plan view of FIG. 2 (A).

The large nozzle conduit 50 connected to the large nozzle 70 is provided with a cap nut 55 having a large outside diameter at the solenoid valve side connection port 51 thereof, while the small nozzle conduit 50 is connected to the small nozzle 80. The solenoid valve side connection port 61 of the 60 is provided with a cap nut 65 having a small outer diameter. An erroneous connection prevention pin 90 is erected in parallel near the conduit side connection port 41 of the small solenoid valve 40. The cap nut 65 having a small outer diameter is screw-fitted to the outside of the connection port 41 without being interfered by the misconnection preventing pin 90. On the other hand, the cap nut 55 having a large outer diameter is hindered by the misconnection preventing pin 90 and cannot be screwed into the connection port 41 of the small solenoid valve 40.

Reference numerals 71 and 81 respectively denote nozzle adapters, and the nozzle adapters 71 and 81 are provided with the large nozzle conduit 50 and the small nozzle conduit 60, respectively.
Is attached.

<Effect> The present invention is configured as described above, and according to the liquid fuel combustion apparatus of claim 1, a fuel supply conduit having a very simple structure using two types of large and small cap nuts and misconnection preventing pins. It is possible to reliably prevent erroneous connection. In particular, only the outer diameter of the cap nut is made different, and the diameters of other pipes are not made different, so that the cost is not increased economically.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram of an embodying device of the present invention, FIG. 2 (A) is a configuration diagram of a main part of the embodying device, FIG. 2 (B) is a plan view of FIG. 2 (A), and FIG. FIG. 3A is a configuration diagram of a main part of a conventional device, and FIG. 3B is a plan view of FIG. 3A. 10: Electromagnetic pump 30: Large solenoid valve 40: Small solenoid valve 50: Large nozzle conduit 55: Large outer diameter cap nut 60: Small nozzle conduit 65: Small outer diameter cap nut 70: Large nozzle 80: Small nozzle 90: Incorrect connection prevention pin

Claims (1)

[Scope of utility model registration request] 1. A fuel jet nozzle of two types, large and small, for jetting fuel for combustion, two solenoid valves of a large size and a small size, which are integrally formed in parallel to correspond to the two large and small fuel jet nozzles, A liquid fuel combustion apparatus having a fuel supply pump for supplying fuel through two solenoid valves, and a large nozzle conduit and a small nozzle conduit that respectively connect the two electromagnetic valves and the two fuel ejection nozzles. And a cap nut with a large outer diameter is provided at the solenoid valve side connection port of the large nozzle conduit, and a small outer diameter cap nut is provided at the solenoid valve side connection port of the small nozzle conduit. A liquid fuel combustion apparatus characterized in that a misconnection preventing pin to which the large diameter cap nut is not attached is provided at a connection port of the valve with the conduit.