JP2002340326A - Liquefied gas vaporizer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To remove the problem that a vaporizer of a conventional structure is necessitated to have a complicated structure because the structure also needs to prevent a liquefied gas from being inflamed if it is present in the surrounding. SOLUTION: A liquefied gas vaporizer is provided with a burner 13 in which an air intake 16 and an exhaust port 20 are disposed in a nonhazardous area 23 to prevent an inflammable gas from entering inside through the air intake 16 and the exhaust port 20. The high temperature exhaust gas discharged from the exhaust port 20 is rendered not to catch the inflammable gas to ensure safety.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquefied gas vaporizer capable of stably vaporizing liquefied petroleum gas such as LPG even in use in cold regions or in winter.

[0002]

2. Description of the Related Art A conventional liquefied gas vaporizer is shown in FIG.
The configuration shown in FIG. That is, boiler 1
Is heated by the medium pump 2
Through the inlet pipe 3 and the medium inflow space 4, the bulk container 6
It flows into the heat exchange pipe 5 disposed in the liquid phase portion 7 and heats the liquid phase portion 7 to promote vaporization.

The conventional configuration has a problem that the apparatus is large and the structure is complicated, and the installation, maintenance, and responsiveness are deteriorated.

Therefore, although not shown, a heat generator using a combustor is used to supply heat to the heat exchanger through which liquefied petroleum gas flows, thereby heating the heat exchanger. Accordingly, a configuration in which liquefied petroleum gas is vaporized has been developed.

[0005]

The structure of the above-mentioned structure has a problem in securing safety.

That is, since a combustor is used as a heating element, when a vaporized liquefied gas is present in a peripheral portion, a structure for preventing the vaporized liquefied gas from igniting is required. Has the problem of becoming complicated.

[0007]

SUMMARY OF THE INVENTION The present invention comprises, as constituent elements, a combustor and a heat exchanger for supplying heat generated by the combustor to a liquefied gas to vaporize the liquefied gas. The liquefied gas vaporizer has a configuration in which the port and the exhaust port are provided in a non-hazardous place.

By arranging the air intake and exhaust ports of the combustor in a non-hazardous area, flammable gas does not enter from the air intake and exhaust ports, and exhaust gas is exhausted from the exhaust port. The safety of the liquefied gas vaporizer is assured so that the high-temperature exhaust gas does not ignite the combustible gas.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 comprises, as constituent elements, a combustor and a heat exchanger for supplying heat generated by the combustor to a liquefied gas to vaporize the liquefied gas. The liquefied gas vaporizer has a configuration in which the air intake port and the exhaust port are provided in a non-hazardous area.

[0010] By arranging the air intake and exhaust ports of the combustor in a non-hazardous area, flammable gas does not enter from the air intake and exhaust ports, and exhaust gas is exhausted from the exhaust port. The safety of the liquefied gas vaporizer is assured so that the high-temperature exhaust gas does not ignite the combustible gas.

According to a second aspect of the present invention, there is provided a combustor, and a heat exchanger for supplying heat generated by the combustor to the liquefied gas and vaporizing the liquefied gas as constituent elements. The liquefied gas vaporizer has a structure in which a shut-off means for shutting off gas intrusion is provided between the exhaust gas and the exhaust port.

The shutoff means provided at the air intake and exhaust ports of the combustor operates so as to shut off the air intake and exhaust ports in the event of an abnormality. No gas enters through the exhaust port,
This is a liquefied gas vaporizer that ensures safety.

According to a third aspect of the present invention, in addition to the configuration described in the second aspect, a liquefied gas vaporizer having a configuration in which the operating mechanism of the shutoff means provided at the air intake port and the shutoff means provided at the exhaust port are shared. And Because the operation mechanism of the shutoff means is shared, the shutoff operation is performed simultaneously at the air intake and exhaust ports, and the shutoff performance is stable and reliability is improved, and the liquefied gas vaporizer has a simple configuration. It is.

According to a fourth aspect of the present invention, in addition to the configuration described in the second or third aspect, the liquefied gas vaporizer has a structure in which the operation mechanism of the shutoff means is non-electric. As a structure in which the operation mechanism of the shutoff means is made non-electric, there is no need for an electric explosion-proof structure, and the structure can be further reduced.

According to a fifth aspect of the present invention, a combustor and a heat exchanger for supplying heat generated by the combustor to the liquefied gas and vaporizing the liquefied gas are included as constituent elements, and the air intake of the combustor is provided. A liquefied gas vaporizer having a structure in which a flame extinguisher is provided at the exhaust port. Even if a flame is generated for some reason in the air intake and the exhaust of the combustor, this flame is extinguished by the flame extinguisher, and the flame does not enter inside.
Further, even if a flame is generated inside the apparatus, the flame is extinguished by the flame extinguisher, and the flammable gas outside is not ignited, so that the apparatus is a safe liquefied gas vaporizer.

According to a sixth aspect of the present invention, there is provided a liquefied gas vaporizer in which the flame extinguisher is configured as a metal net or a honeycomb body formed of a thin metal plate, in addition to the configuration described in the fifth aspect.

According to this configuration, the flame extinguisher can be simply constructed, and a liquefied gas vaporizer having a simple structure and ensuring safety can be obtained.

According to a seventh aspect of the present invention, in addition to the configuration of the fifth or sixth aspect, the size of the eyes of the flame extinguisher provided at the exhaust port is smaller than the size of the eyes of the flame extinguisher provided at the intake port. This is a liquefied gas vaporizer having the above configuration. The temperature of the exhaust port is large due to the fact that the exhaust gas is constantly exhausted at a high temperature, and the exhaust port is at a high temperature. For this reason, the flame extinguisher provided on the exhaust port side is liable to have its flame extinguishing performance deteriorated due to the temperature rise. In the present invention, the extinguisher provided on the exhaust port side reduces the size of the eyes of the vessel to ensure extinguishing performance,
And the extinguisher provided on the intake side where the temperature rise is small,
The eye size is increased to prevent clogging and to ensure reliability.

According to an eighth aspect of the present invention, in addition to the configuration according to any one of the fifth to seventh aspects, a liquefied gas vaporizer having a configuration in which a flame extinguisher provided at an exhaust port is provided with a heat shielding means. Equipment.

Therefore, the extinguisher provided on the exhaust side is
A liquefied gas vaporizer with further improved reliability can be provided without causing a local temperature rise.

According to a ninth aspect of the present invention, in addition to the configuration according to any one of the first to eighth aspects, the burner of the combustor has a flame extinguishing function.
For this reason, a flame extinguisher on the intake port side can be eliminated, and the liquefied gas vaporizer is reduced in cost with a simple configuration.

[0022]

(Embodiment 1) Hereinafter, a first embodiment of the present invention will be described. FIG. 1 is a sectional view showing the configuration of the liquefied gas vaporizer of the present embodiment. The liquefied gas vaporizer of the present embodiment has a combustor 13 and a heat exchanger 11 provided in contact with or close to the combustor 13.

The heat exchanger 11 is connected to, for example, a bulk storage tank (not shown) by a pipe, and supplies heat generated by the combustor 13 to the liquid-phase liquefied gas in the bulk storage tank which is pumped by a pump or the like. Then, the liquefied gas is operated to be sent to a pipe connected to a gas consuming device (not shown).

In this embodiment, the heat exchanger 11 is made of aluminum die-cast in consideration of thermal conductivity and strength. Further, inside the heat exchanger 11, a radiation fin 12 is provided.
have. The radiating fins 12 use aluminum similarly to the heat exchanger 11, but copper can also be used. In this embodiment, a plurality of radiating fins 12 are used, and are integrally formed on the wall of the heat exchanger 11 on the combustor 13 side. A passage through which the liquefied petroleum gas flows is formed between the plurality of radiation fins 12.

Therefore, the liquefied petroleum gas receives heat generated by the combustor 13 provided in contact with or close to the heat exchanger 11 while flowing through this passage. That is, the liquefied petroleum gas is vaporized in the heat exchanger 11 and becomes a gaseous liquefied petroleum gas which flows through the pipe and is supplied to the gas-using equipment.

The combustor 13 is disposed in the combustor body 14 and has a fuel gas ejection nozzle 15 connected to a fuel gas supply source (not shown) and an air intake port 16.
, A burner 17, a spark plug 18, and a heat absorbing fin 19
, An exhaust port 20, an intake pipe 21, and an exhaust pipe 22.

The intake pipe 21 is constituted by a metal pipe, and one end is provided at the air intake port 1 inside the combustor 13.
6a, the other end is extended to the non-hazardous area 23, and the end face is the air intake port 16. Also,
The exhaust pipe 22 is also formed of a metal pipe, one end of which is extended to an exhaust port 20 a inside the combustor 13, the other end is also extended to a non-hazardous area 23, and the end face is formed of an exhaust port 2.
It is 0.

The non-hazardous area 23 is an area where there is no possibility that flammable gas is present. Non-hazardous areas are 0.9 m or more above the ground.

Hereinafter, the operation of this embodiment will be described.
When the combustor 13 is driven, the combustor 13 generates heat. The amount of heat is transmitted to the heat exchanger 11, and the liquefied gas flowing inside the heat exchanger 11 is vaporized. Vaporized gas is supplied.

That is, the valve of the bulk storage tank (not shown) is opened to supply the liquid-phase liquefied gas inside the bulk storage tank to the heat exchanger 11.

The fuel gas is introduced into the combustor 13 by opening a valve provided at a fuel gas supply source (not shown). This fuel gas is blown out from the fuel gas jet nozzle 15 toward the internal combustion chamber. At this time, external air is supplied from the air intake 16 by an ejector effect due to high-speed gas ejection. Therefore, the fuel gas is mixed with air to become a flammable gas,
Blow out from burner 17. In this state, the spark plug 18
When the electric spark is generated, the flammable fuel gas is ignited, and a flame is formed in the burner 17. The heat of the flame heats the heat absorbing fins 19. In this embodiment, the heat absorbing fins 19 are made of a metal such as aluminum or copper, and are integrally formed on the wall surface of the combustor body 14 made of aluminum die cast on the heat exchanger 11 side.

Therefore, the heat of the flame is transferred to the heat absorbing fins 19.
And transmitted to the heat exchanger 11 instantaneously. As described above, the heat exchanger 11 is provided with a plurality of radiating fins 12 forming the flow path of the liquefied gas. Therefore, the amount of heat transmitted to the heat exchanger 11 is transmitted to the radiation fins 12 and transmitted from the radiation fins 12 to the liquefied gas. For this reason, the liquefied gas flowing through the heat exchanger 11 is vaporized and supplied into a pipe connected to a gas-using device (not shown).

Therefore, the gas-using equipment can receive a sufficient supply of gaseous liquefied gas even in the winter season, and can operate reliably.

At this time, the combustion gas combusted in the combustor 13 is deprived of heat by the heat absorbing fins 19, becomes exhaust gas at about 150 ° C., and is exhausted through the exhaust port 20a and the exhaust pipe 22. The air is exhausted from the exhaust port 20 which is the end face of the pipe 22 to the non-hazardous area 23.

The liquid-phase liquefied gas flowing from the upper part of the heat exchanger 11 is
, And is instantaneously vaporized and gasified from the lower side of the heat exchanger 11 and flows out. At this time, the liquefied gas in the liquid phase that could not be vaporized accumulates at the bottom of the heat exchanger 11,
It vaporizes here. Therefore, the liquid-phase liquefied gas does not flow out of the heat exchanger 11.

Further, according to the present embodiment, even if a situation where flammable gas is present around the combustor 13 occurs, the air intake port 16 and the exhaust port 20 are arranged in the non-hazardous area 23. This combustible gas does not enter the combustor 13. That is, there is no danger of igniting the gas present outside.

As described above, according to the present embodiment, the combustor 1
Since the heat of 3 is instantaneously and efficiently transmitted to the heat exchanger 11, the liquefied gas in the liquid phase flowing into the heat exchanger 11 can be vaporized in a short time, the liquefied gas can be efficiently supplied, and the liquefaction having a fast response can be achieved. This realizes a gas vaporizer.

Further, even in a situation where a combustible gas is present outside, a safe liquefied gas vaporizer is realized without fear of ignition.

Further, the heat exchanger 11 of the present embodiment has a structure in which a plurality of radiating fins 12 are provided so as to form a flow path through which a liquid liquefied gas flows, so that the liquefied gas can be efficiently vaporized. Therefore, the heat exchanger 11 can be made compact.

(Embodiment 2) Next, a second embodiment of the present invention will be described. FIG. 2 is a sectional view showing the configuration of the liquefied gas vaporizer of the present embodiment. In this embodiment, the combustor 1
3 means for shutting off the air intake port 16 and the exhaust port 20
4 is provided.

The shielding means 24 includes a heat shield plate 25 provided at the air intake port 16 and the exhaust port 20, and the heat shield plate 25.
, A temperature detector 27 provided in the combustor 13, and an operation circuit 28. The operation circuit 28 is constituted by a microcomputer, and the motor 26 is operated in accordance with the temperature detected by the temperature detector 27.
Is to be driven. Hereinafter, the operation of the present embodiment will be described. Gas leaks for some reason,
When this gas enters from the air intake 16, the temperature inside the combustor 13 becomes higher than the steady state temperature. The operating circuit 26 constantly monitors the temperature detected by the temperature detector 27. When recognizing that the temperature is abnormal, the operating circuit 26 activates the electric motor 26 to rotate the heat shield plate 25.
When the heat shield plate 25 rotates, for example, 90 °, the air intake port 16 and the exhaust port 20 are shut off.

Therefore, the external combustible gas cannot enter the combustor 13 at this stage. Further, the flame generated in the combustor 13 is
It is not released to the outside. For this reason, according to the present embodiment, the external combustible gas does not ignite, and the intake pipe 21 and the exhaust pipe 22 can be shortened to improve the installation property.

(Embodiment 3) Next, a third embodiment of the present invention will be described. FIG. 3 is a sectional view showing the configuration of the liquefied gas vaporizer of the present embodiment. In this embodiment, the heat shield plates 25 provided at the air intake 16 and the exhaust
It is driven by three operating mechanisms 29. In this embodiment, an electric motor 26 is used as the operation mechanism 29. That is, one end of the rotation shaft 26a of the electric motor 26 is extended, and the heat shield plate 25 is attached to this extension. Thus, the two heat shield plates 25 are provided by one motor 26.
Is operating.

As described above, in this embodiment, the liquefied gas vaporizer uses the operating mechanism 29 in common, and the structure is simple and the cost can be reduced. In addition, the shutoff operation is performed simultaneously in the air intake 16 and the exhaust outlet 20, so that the shutoff performance is stabilized and the reliability is improved.

(Embodiment 4) Next, a fourth embodiment of the present invention will be described. FIG. 4 is a sectional view showing the configuration of the liquefied gas vaporizer of the present embodiment. In the present embodiment, the operation mechanism 30 of the heat shielding means 24 is configured to convert the expansion and contraction of the piston due to thermal expansion into the rotational movement of the operating rod 31 to rotate the heat shielding plate 25.

That is, the operating mechanism 30 includes an actuator 30a
And a piston 30c having a heat-sensitive portion 30b at the tip end
, Operating rod 31, and operating piece 31 provided on operating rod 31
a. The tip of the operating piece 31a is connected to the other end of the piston 30c. Also, the heat-sensitive part 30b
It is configured to be attached to the combustor 13.

Hereinafter, the operation of this embodiment will be described.
It is assumed that the combustible gas enters the combustor 13 for some reason and the combustor 13 enters abnormal combustion. The heat generated by the abnormal combustion is transmitted to the working fluid sealed in the actuator 30a. The working fluid expands by heating, and moves the piston 30c. The piston 30c is in contact with an operating piece 31a having a distal end connected to the operating rod 31. Therefore, the movement of the piston 30c is converted into the rotation of the operating rod 31, and the rotation of the operating rod 31 is transmitted to the heat shield plate 25, and the shield plate 25 rotates. When the heat shield plate 25 rotates, the air intake port 16 and the exhaust port 25 are shut off. Thus, according to the present embodiment, it is possible to realize a liquefied gas vaporizer that ensures safety without igniting external combustible gas.

In the present embodiment, the actuator 30a is manually reset, and is configured to be manually reset when the user confirms safety. That is, the operation mechanism 30 of the present embodiment is of a non-electric type, which eliminates the need for an electric explosion-proof structure, and can be configured at a lower cost. In addition, running costs can be reduced because electricity is not used.

(Embodiment 5) Next, a fifth embodiment of the present invention will be described. FIG. 5 is a cross-sectional view illustrating the configuration of the present embodiment. In this embodiment, an intake flame extinguisher 32 is provided in the air intake port 16a, and an exhaust extinguisher 33 is provided in the exhaust port 20a.

FIG. 6 is a perspective view showing the structure of the exhaust flame extinguisher 33. The exhaust gas extinguisher 33 has a configuration in which a honeycomb body 33a formed of a metal net or a thin metal plate is disposed on an end surface.

FIG. 7 is a perspective view showing the configuration of the intake flame extinguisher 32. The intake extinguisher 32 has a configuration in which a honeycomb body 32a formed of a metal net or a thin metal plate is disposed on an end face.

At this time, in the present embodiment, the mesh size of the honeycomb body formed of the metal net or the metal thin plate of the exhaust flame extinguisher 33 is 0.6 mm, and the mesh size of the metal net or the metal thin plate of the intake extinguisher 32 is small. The mesh size of the formed honeycomb body 32a is set to about 1 mm.

Hereinafter, the operation of this embodiment will be described.
Since the exhaust gas extinguisher 33 is heated by the combustion gas,
The temperature is about 50 ° C. In order to maintain the fire-extinguishing performance in this state, it is necessary to reduce the size of the eyes to 0.6 mm. In addition, since the temperature of the intake extinguisher 32 is close to room temperature, the size of the eyes does not need to be particularly small. In the present embodiment, 1 mm is set so that clogging does not occur. As described above, the present embodiment has a simple configuration in which the intake extinguisher 32 and the exhaust extinguisher 33 are disposed without the blocking means 24 used in the above-described embodiment. Therefore, even if a flame is generated in the vicinity of the intake extinguisher 32, this flame is extinguished by the intake extinguisher 32 and does not enter the air intake 16a. Even if a flame is generated in the vicinity of the air intake 16a, the flame is extinguished by the intake extinguisher 32 and does not go outside.

Even if a flame is generated in the vicinity of the exhaust gas extinguisher 33, this flame is extinguished by the exhaust gas extinguisher 33 and does not enter the exhaust port 20a. Further, even if a flame is generated in the vicinity of the exhaust port 20a, the flame is extinguished by the exhaust extinguisher 32 and does not go outside.

Therefore, according to the present embodiment, a safe liquefied gas vaporizer that does not have a risk of igniting an external combustible gas is realized. In addition, since the size of the eyes of the exhaust flame extinguisher 33 is reduced to ensure the quenching performance, and the size of the eyes of the intake flame extinguisher 32 is increased to prevent clogging,
Reliability can be ensured.

Embodiment 6 Next, a sixth embodiment of the present invention will be described. FIG. 8 is a sectional view showing the configuration of the liquefied gas vaporizer of the present embodiment. FIG. 9 is a perspective view of an exhaust gas extinguisher used in the liquefied gas vaporizer of the present embodiment.

In the present embodiment, the exhaust flame extinguisher 33 has a heat shielding means 34 at the entrance 33b. Heat shielding means 34
Is composed of a heat shield cylinder 34a having a bottom and a through hole 34b provided on the side of the heat shield cylinder 34a.

With the above arrangement, after the combustion gas hits the bottom of the heat shield cylinder 34a, it passes through the through hole 34b and the exhaust gas extinguisher 3
3 so as to flow. For this reason, the exhaust gas extinguisher 33 does not cause a local temperature rise. As a result, according to the present embodiment, there is no deterioration in the fire extinguishing performance, and the reliability can be further improved.

(Embodiment 7) Next, a seventh embodiment of the present invention will be described. FIG. 10 is a sectional view showing the configuration of the liquefied gas vaporizer of the present embodiment. In this embodiment, the burner 17 is configured to have a flame-extinguishing function. For this reason,
This does not require the use of the intake extinguisher 32 described in the above embodiment. That is, in this embodiment, the burner 17
Indicates that the flame outlet is set to 1 mm or less. As a result, the gas ejection speed is higher than the gas combustion speed, and no flashback occurs.

Therefore, according to the present embodiment, no flame is emitted from the air intake port 16 and there is no danger of ignition. That is, according to the present embodiment, the cost can be reduced by eliminating the intake extinguisher 32.

[0061]

According to the first aspect of the present invention, there is provided a combustor,
A heat exchanger that supplies heat generated by the combustor to the liquefied gas to vaporize the liquefied gas, and that an air intake port and an exhaust port of the combustor are provided in a non-hazardous area where flammable gas does not exist. In addition, the present invention realizes a liquefied gas vaporizer that ensures safety, in which flammable gas does not enter or ignites external flammable gas.

According to a second aspect of the present invention, there is provided a combustor, and a heat exchanger for supplying heat generated by the combustor to the liquefied gas to vaporize the liquefied gas. As a configuration provided with a shut-off means for shutting off the entry of gas, even in the event of an abnormality, gas does not enter from the outside, and does not ignite external flammable gas,
A liquefied gas vaporizer that ensures safety is realized.

According to the third aspect of the present invention, the operation mechanism of the shut-off means provided at the air intake and the shut-off means provided at the exhaust port is shared, so that the shut-off performance is stabilized and the reliability is improved. A simple liquefied gas vaporizer is realized.

The fourth aspect of the present invention realizes a liquefied gas vaporizer that can be configured at a lower cost by eliminating the need for an electric explosion-proof structure by using a non-electrical structure for the operation mechanism of the shutoff means.

According to a fifth aspect of the present invention, there is provided a combustor, and a heat exchanger for supplying the heat of the combustor to the liquefied gas to vaporize the liquefied gas, wherein the air intake and the exhaust of the combustor are provided. As a configuration with a flame extinguisher, even if flame occurs for some reason, this flame is extinguished, the flame does not enter inside, and the flame generated inside the device is extinguished. Accordingly, a safe liquefied gas vaporizer that does not ignite external combustible gas is realized.

The invention described in claim 6 realizes a liquefied gas vaporizer that has a simple structure and assures safety with the flame extinguisher configured as a metal net or a honeycomb body made of a thin metal plate. It is.

According to the seventh aspect of the present invention, the size of the eyes of the flame extinguisher provided at the exhaust port is made smaller than the size of the eyes of the flame extinguisher provided at the intake port. A liquefied gas vaporizer capable of preventing clogging and ensuring reliability is realized.

According to the eighth aspect of the present invention, the flame extinguisher provided at the exhaust port is provided with a heat shielding means, so that the flame extinguisher does not locally increase in temperature and further improves reliability. Liquefied gas vaporizer is realized.

According to the ninth aspect of the present invention, the burner of the combustor has a flame-extinguishing function and realizes a low-cost liquefied gas vaporizer with a simple configuration. .

[Brief description of the drawings]

FIG. 1 is a cross-sectional view illustrating a configuration of a liquefied gas vaporizer according to a first embodiment of the present invention.

FIG. 2 is a sectional view showing a configuration of a liquefied gas vaporizer according to a second embodiment of the present invention.

FIG. 3 is a sectional view showing a configuration of a liquefied gas vaporizer according to a third embodiment of the present invention.

FIG. 4 is a sectional view showing a configuration of a liquefied gas vaporizer according to a fourth embodiment of the present invention.

FIG. 5 is a sectional view showing a configuration of a liquefied gas vaporizer according to a fifth embodiment of the present invention.

FIG. 6 is a perspective view showing the configuration of the exhaust gas extinguisher.

FIG. 7 is a perspective view showing the structure of the intake extinguisher;

FIG. 8 is a sectional view showing a configuration of a liquefied gas vaporizer according to a sixth embodiment of the present invention.

FIG. 9 is a perspective view showing the configuration of the exhaust flame extinguisher.

FIG. 10 is a sectional view showing a configuration of a liquefied gas vaporizer according to a seventh embodiment of the present invention.

FIG. 11 is a block diagram showing a configuration of a conventional liquefied gas vaporizer.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Heat exchanger 13 Combustor 16 Air intake 16a Air intake 17 Burner 20 Exhaust port 20a Exhaust port 23 Non-dangerous place 24 Shut-off means 29, 30 Operating mechanism 32 Intake extinguisher 33 Exhaust extinguisher 32a Metal net 33a Metal Net 34 heat shield

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI theme coat ゛ (Reference) F23L 13/00 F23L 13/00 A 13/02 13/02 17/00 601 17/00 601G (72) Invention Person Takaaki Kusaka 1006 Kazuma Kadoma, Kadoma City, Osaka Prefecture F-term in Matsushita Electric Industrial Co., Ltd. (reference)

Claims (9)

[Claims] 1. A combustor comprising: a combustor; and a heat exchanger for supplying heat generated by the combustor to the liquefied gas to vaporize the liquefied gas, wherein a combustible gas is present between an air intake and an exhaust of the combustor. A liquefied gas vaporizer installed in a non-hazardous area that does not emit water. 2. A combustor, comprising: a combustor; and a heat exchanger for supplying heat generated by the combustor to the liquefied gas to vaporize the liquefied gas, and to prevent gas from entering the air intake and exhaust ports of the combustor. Liquefied gas vaporizer provided with a shut-off means. 3. The liquefied gas vaporizer according to claim 2, wherein the operating mechanism of the shutoff means provided at the air intake and the shutoff means provided at the exhaust outlet are shared. 4. The liquefied gas vaporizer according to claim 2, wherein the operation mechanism of the shut-off means is a non-electric type. 5. A combustor, and a heat exchanger for supplying heat generated by the combustor to the liquefied gas to vaporize the liquefied gas, wherein a flame extinguisher is provided at an air intake and an exhaust of the combustor. Liquefied gas vaporizer. 6. The liquefied gas vaporizer according to claim 5, wherein the flame extinguisher is a metal net or a honeycomb body made of a thin metal plate. 7. The liquefied gas vaporizer according to claim 5, wherein the size of the eyes of the extinguisher provided at the exhaust port is smaller than the size of the eyes of the extinguisher provided at the intake port. 8. The liquefied gas vaporizer according to claim 5, wherein the extinguisher provided at the exhaust port includes a heat shield. 9. The liquefied gas vaporizer according to claim 1, wherein the burner of the combustor has a flame extinguishing function.