JPS58104349A - External-combustion type heat exchanger - Google Patents

Abstract

PURPOSE:To aim at improvement in heating efficiency, by housing a hollow heat generating bar in each of heating tubes to be heated from the outside, and making up passages for heated fluid on the inner wall of each heating tube or the outer wall of each heat exchanger element bar, while interconnecting the opening end to each hollow part of the heat generating bars. CONSTITUTION:On a heating body 6 to be heated from the outside of each external- combustion type heat exchanger available for regenerative heat exchangers 10, etc., there are formed part of a cylinder making up an expansion space 7, a heating case 16 unified with plural pieces of small diametral passages 8 as one body, each of bottomed, cylindrical heating tubes 18 to be screwed up with case screwed parts 17 and each of hollow heat generating bars 19 to be housed inside the tube. And, on each peripheral wall of the heat generating bars 19, plural number of linear grooves are formed, then screwing parts 23 on the top end of small diametral parts 22 are screwed up with the heating case 16 and hollow passages 24 are butted to the regenerative heat exchangers 10 while the heat generating bars 19 are covered with the heating tubes 8. After that, the grooves 21 are made turning to the outside passages 26 of working gas while the opening ends 27 are opened inside the heating tube's bottomed parts 28 and interconnected to the hollow passages 24.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an external combustion type exchanger that generates 7 J]lF of the discharged body by external force.

An example of an external combustion type evaporator converter will be explained with reference to a heat regeneration external combustion engine (Stirling engine) K using the same. Figure 1/f
In the stroke showing the operation of a regenerative external combustion engine, (1) is the power piston reciprocating within the cylinder (2), (3)
A small space (51) is fitted and sealed in the guide tool (4) of the piston and communicates with the expansion space (7) below the Dainuglacer + (6) ItiM displacer, which is one amount lighter than the power piston (1). A heating element having a large number of small diameter passages (8) extending radially and heated from the outside by a lower burner heat source (9), aoni+Fi small diameter passages (
8) is a cooler consisting of a regenerative heat exchanger made of steel and a cooling water pipe located between the compressor and the compressor.

There are helium, nitrogen, static electricity, etc. inside this engine.
'Fa gas is sealed 9. By heating the burner heat source (9), the aO<displacer (3) and the power piston (1), which will be described later, reciprocate, and this Q:)l<")-
Output is taken out from the output shaft of the piston.

That is, as shown in FIG.
The power piston (1) is pushed up by being led out to the displacement space (2) through υ, and the displacer (3) is pulled up by the pulling force in the sealed small space (5) as the piston rises. Rise and displacer (
3) is integrated with the power piston (1) to create an expansion space (
7), it is pushed up in state 1 of the same figure (C2).

And this bulge 4! The power piston (1
) and the displacer (3) stop, and the pressure in the compression space (2) exceeds the pressure in the small space (5) seven times, and with this pressure difference, the displacer (3)
is lowered, and along with this lowering, approximately 500p of working gas in the expansion space (7) moves to the pressure space (6). During this movement, the working gas is energized in the small diameter passage (8) and rises at about 70 oct, and then is stored in the regeneration exchanger αG and the temperature drops at about 100 oct.

Thereafter, it is cooled by a cooler C111.

Due to this cooling action, the gas pressure in the back pressure space αΦ overcomes the working gas pressure in the compression space, and the power piston (1) is pushed down as shown in the same figure, compressing the working gas in space 4 and rising. The displaced displacer (3) is also pushed down by the compressive action of the small space (6). The pushed down display (3) then expands into the expansion space (7).
) begins to rise again due to the internal pressure of the space (6
) moves to the l1Iiiil tension space (7). During the movement, the low-temperature working gas is energized at about 500 C by the discharge of the exchanger αO during regeneration, where the heat is stored in the sink shown in FIG. Then, the operation returns to the above-mentioned binding cord shown in FIG.

In this way, it is necessary to preheat the small diameter passage (8) in order to increase the operating efficiency by the heat storage and release action of the regenerative heat exchanger (IQ) and to enhance the energy storage action of the regenerative #8 exchanger αO.

In order to efficiently perform such reheating, a heating element (6
A method has been adopted in which the small-diameter passage (8) of the burner is formed by a large number of small-diameter bare pipes and is directly energized by the flame of the burner heat source (9).

However, it is complicated to arrange the small-diameter pipes and connect these pipes individually across the cylinder (2) wall of the expansion space (7) and the regeneration exchanger Q (1), and the small-diameter pipes are arranged uniformly. It had the disadvantage of being difficult to heat.

SUMMARY OF THE INVENTION In view of these circumstances, an object of the present invention is to provide an external combustion type non-exchangeable device that is easy to manufacture and heats uniformly and efficiently. In order to achieve this object, the configuration of the present invention includes a bottomed cylindrical heating tube that is energized from the outside, and a hollow heat transfer rod that is housed inside the tube. A large number of grooves are formed in at least one of the outer circumferential wall and the inner wall of the cylinder, and the grooves are used as outer passages of the heated barrier, and the open ends of the passages are opened in the bottomed part of the heating member mJ. It communicates with the hollow passage of the heat transfer rod.

Hereinafter, additional embodiments of the present invention will be described based on FIG. 2 and the fifth factor. Note that parts corresponding to those in FIG. 1 are given the same reference numerals, and their descriptions are omitted.

The second (2) is the heating body (6) and cylinder (2) in Fig. 1.
).

Displacer (3), an enlarged cross-sectional view of the main part corresponding to a part of the regenerative heat exchanger αG, Figure 6 is a cross-sectional view taken from the ■-■ arrow line in Figure 2. The joining body (6) is an expansion space. ν forming (7)
A heating case uO in which a part of Linda (2) and eight small-diameter passages 18+ are integrally formed with a heat-resistant stainless steel alloy material;
A bottomed cylindrical heating tube (G) made of a heat-resistant alloy that is screwed together with the threaded part α of the case, and a Tsubame-resistant air transmission 11 made of N6 stainless steel, ceramic, etc. It is formed from 19.

1. There is a straight strip S on the outer PN wall of this heat transfer rod QIJ.
&JJ are formed, and the screw part of the small diameter part at the upper end is screwed together with the heating case M, and the hollow II circuit (to) is butted against the regeneration exchanger (to), and this heat transfer rod α The assembly is completed when the value is covered with 7Jl heat tube (to).

In this way, the hollow heat transfer rod Q9 with grooves is connected to the heating tube (
The working gas (
#7
By opening the inside and communicating with the hollow passage (to), the working gas flows into the expansion space (
7) After flowing into the circular concavity 4 of the smaller diameter part ■ and turning 9, it descends through all eight outer passages (end), and then,
The regenerating heat exchanger (1 (l)
be led to. At this time, the working gas flowing inside the outer passage (to) is removed from the outside by the ms pipe (g), and from the inside by the heat transfer rod (0) which is externally heated by the heat exchanger from the booster tube (t). From there, both the inside and outside are energized efficiently, and it reaches the regenerative heat exchanger αG while being heated and maintained by the heat transfer rod zero casting in the middle nine passages.

In addition, the transmission fP has a heat storage function in addition to the auxiliary function, and assists the lI heat function of the exchanger αO during regeneration, thereby contributing to the efficiency of 1 Fude.

Incidentally, the grooves and grooves may have a spiral shape or other shapes, and may be formed on the cylinder inner wall G side similar to the heating tube 011, and the outer circumferential wall of the heat transfer rod 09 and the cylinder inner wall (towards). It is sufficient to form at least one of them (formation of both at the same time is also acceptable).

Since the present invention is configured as described above, an external combustion type heat exchanger can be easily and compactly manufactured by assembling the booster tube and the hollow heat transfer rod, and the internal and external heating effects of the KLO and heating elements can be uniformly and Efficient <7 JI force conversion #l) 1 Beneficial.

In particular, the external combustion type heat exchanger of the present invention is extremely suitable for use in heat regeneration external combustion systems in which the fluid to be heated flows in forward and reverse directions, and together with the heat storage effect, it greatly contributes to increasing the operating efficiency. be able to.

[Brief explanation of the drawing]

(11(11) &\)(→ Figure 1 is a stroke diagram showing the operation of a heat regeneration external combustion engine. Figure 2 (8) is an enlarged view of the main parts of an external combustion type exchanger showing an embodiment of the present invention. The 1r side view and Figure 6 are the half-section factors in the direction of m-m' arrows in Figure 2. ...Outer peripheral wall of heat transfer rod, 3...Groove, -...Hollow passage, □□□...Inner cylinder wall, (to)... ...Outside passageway, (support) ...opening end, (to) ...bottomed part. Participant: 1 person from outside Sanyo Electric Co., Ltd.

Claims (1)

[Claims] (1) A cylindrical heating tube with a bottom that is exposed from the outside by 7Jll,
A hollow heat transfer rod housed in the cylinder of the tube, a large number of grooves are formed in at least one of the outer circumferential wall of the heat transfer rod and the inner wall of the cylinder, and the grooves #It are made into an H-energized body. An external combustion type exchanger, characterized in that the outer passage has an outer passage, and the open end of the passage is opened within the bottomed part of the heating tube to communicate with the hollow passage of the heat transfer rod.