JP2001056097A - Carburetor for liquefied gas fuel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an efficiently operated carburetor by forming fins of a finned pipe with intermittently disposed cutouts in the longitudinal direction. SOLUTION: Fins 22 of finned pipes standing close together are provided with cutouts 23 at fixed spaces in the longitudinal direction. The dimensions of the cutouts 23 are determined in consideration of a ventilating effect and a heat absorbing effect of the fins 22 (Fig. (a)). It is understood that the finned pipes stand close together (Fig. (b)). By thus providing cutouts in the fins of the finned pipe 21, air can be circulated in any direction of arrows X, Y, Z through the cutouts 23 so that heat of vaporization can be enough absorbed. The finned pipes 21 standing close together are installed at a gradient, whereby some of sucked air strikes against the end of the cutout 23 of the fin 22 as indicated by arrows to make a divided flow, and the flow is changed axially, so that the efficiency of absorbing heat of vaporization can be further improved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for efficiently absorbing thermal energy in the atmosphere and vaporizing a liquefied gas fuel.

[0002]

2. Description of the Related Art Fuel gas generally used is city gas and liquefied gas, and most of liquefied gas is liquefied petroleum gas (hereinafter referred to as LPG).

[0003] LPG used in ordinary households is packed in a cylinder-type cylinder and delivered to the home, and the LPG filled in the cylinder is delivered.
When the PG runs out, it is supplied in such a way that it is replaced with a cylinder filled with LPG.

The gas supply from the LPG cylinder absorbs thermal energy in the atmosphere from the cylinder surface as heat of vaporization, and
PG is vaporized and supplied to a gas consuming device. In this case, in the case of propane, about 4 kg is required to vaporize 1 kg.
It requires 27 kilojoules (kJ) of heat of vaporization, and there is a limit to the amount of gas generated by the absorption of heat of vaporization only from the surface of the cylinder.

[0005] In recent years, bulk containers, which have been conventionally used for large customers, have been adopted by medium and small customers in order to reduce delivery costs due to soaring delivery costs such as labor costs. It has become to.

In the case of the above-mentioned bulk container, since the surface area of the container with respect to the gas consumption is small, it is not enough to absorb the heat energy in the atmosphere as heat of vaporization as in a cylinder used for general households. Can not be vaporized.

Therefore, when a bulk container is used, FIG.
The LPG extracted from the liquid phase of the bulk container 1 is guided to a vaporizer 9 as shown in FIG. 6, where it is vaporized by applying heat of vaporization by electricity or steam, or as shown in FIG. Either a method of arranging the heat exchanger 10 therein and applying heat of vaporization to vaporize the heat has been adopted. 5 and 6, 2 is a gas filling valve, 3 is a gas takeoff valve, 4 is a primary regulating valve, 5 is a secondary regulating valve, 6 is a meter, 7 is a safety valve, 8 is a liquid level gauge, and 11 is hot water supply. , 12 is an outside air sensor, 13 is a pressure sensor, 14 is a temperature sensor, and 15 is a controller.

Further, since the above-mentioned LPG vaporization method requires additional heat energy and increases running costs, a large number of finned tubes are established, and LPG extracted from the liquid phase of the bulk container is introduced into the finned tubes, and the air is introduced into the atmosphere. One that absorbs heat energy inside as vaporization heat is employed.

An embodiment of a vaporizer of the type that absorbs thermal energy in the atmosphere as heat of vaporization as described above will be described with reference to FIG.

Under normal conditions, the LPG extracted from the liquid phase of the bulk container as shown in FIG.
The supply of G is controlled, the evaporator body (tube with fins) 32 absorbs heat of vaporization and gasifies, and is supplied to a gas consuming pipe (hereinafter, referred to as a line) 34 via a temperature sensing cylinder 33. A temperature sensor 35 is attached to the temperature sensing cylinder 33.

When the LPG is vaporized properly in the finned tube 32, a part of the vaporized gas in the line 34 is taken in, enters the diaphragm chamber 37 of the liquid regulating valve 31 through the shut-off valve 36, and enters the LPG. LP properly balanced with the side pressure
G is supplied.

Here, when the heat of vaporization in the finned tube 32 is insufficiently absorbed, that is, when the vaporization becomes insufficient, the temperature of the temperature sensing tube 33 decreases as shown in FIG. When activated, the shutoff valve 36 is activated to shut off the inflow of the vaporized gas taken in, the shutoff gas 38 flows in, the liquid control valve 31 is closed, and the supply of LPG is also shut off. . Since the shut-off valve 36 has an irreversible structure, when the state of the vaporized gas returns to normal, the reset button 3
By pressing 9, the LPG can be vaporized in the original state.

[0013]

In the above-mentioned method, the amount of vaporized heat absorbed depends on the radiant heat of the sun, temperature, and air volume.
Looking at the relationship between air temperature and air volume in particular, the air is exchanged on the windward or outer side of the finned tube with forests, so that the heat of vaporization can be sufficiently absorbed, but the leeward or inner side is poorly ventilated and cannot absorb the heat of vaporization sufficiently. State.

In such a state, there arises a problem that the balance between the vaporization of LPG and the consumption of gas is lost, and the supply of LPG is frequently cut off.

The present invention has been made in view of the above-mentioned problems in the prior art, and provides a liquefied gas fuel vaporizer in which a finned tube is established to efficiently operate a liquefied gas fuel vaporizer that absorbs heat of vaporization from the atmosphere. The task is to

[0016]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention relates to a liquefied gas fuel vaporizer for absorbing heat of vaporization from the atmosphere by means of a forest of finned tubes. , In which a notch is provided intermittently in the length direction.

In the present invention configured as described above,
By intermittently cutting out the fins of the finned tube, ventilation becomes better downwind or inside the forested finned tube,
The heat of vaporization can be absorbed from all finned tubes.
PG can be efficiently vaporized.

[0018]

Embodiments of the present invention will now be described with reference to the drawings. FIG. 1A is a front view of an embodiment of the present invention, in which a fin 22 of a finned tube 21 in a forest is shown.
Notches 23 are provided at regular intervals in the length direction. The size of the notch 23 is experimentally determined in consideration of the ventilation effect and the heat absorption effect of the fin 22.

FIG. 1B is a plan view showing a state in which the finned tube 1 stands. By intermittently notching the fin 22 of the finned tube 21 in this manner, the sled notch 23
Through which air can flow in any of the X, Y, and Z directions, and the heat of vaporization can be sufficiently absorbed.

Also, as shown in FIG. 3, the finned pipe 21 to be set up in a forest is installed at an angle so that a part of the blown wind hits the end of the notch 23 of the fin 22 as shown by the arrow and is diverted. Since the flow is changed in the axial direction, the efficiency of absorbing the heat of vaporization can be further improved.

[0021]

As described above, according to the present invention,
The atmosphere is exchanged with the entire finned tube, thereby increasing the efficiency of absorbing the heat of vaporization and supplying the vaporized gas properly.

[Brief description of the drawings]

FIG. 1A is a front view of a forest finned tube according to the present invention,
(B) Plan view

Fig. 2 Enlarged view of finned tube

FIG. 3 is an oblique view of a finned tube

FIG. 4 (a) LPG vaporization control system diagram (when normal) (b) LPG vaporization control system diagram (when shut off)

FIG. 5 is a schematic diagram of a gas generation facility using a vaporizer (part 1).

FIG. 6 is a schematic diagram of a gas generation facility using a vaporizer (part 2).

[Explanation of symbols]

 21 Finned tube 22 Fin 23 Notch

Claims (1)

[Claims] 1. A liquefied gaseous fuel vaporizer that absorbs heat of vaporization from the atmosphere by means of a forest of finned tubes, wherein the fins of the finned tubes are provided with intermittent cutouts in the length direction thereof. A vaporizer for liquefied gas fuel, characterized in that: