DE2530483A1 - HOT GAS PISTON MACHINE WITH A DEVICE FOR REGULATING THE WEIGHT AMOUNT OF A WORKING MEDIUM IN A WORKING ROOM - Google Patents

Description

PIlA. ^ 0519 ο DEEN / KVH. ·

June 26, 1975.

A "· M V. Philip G '- ^ .-. C-uiiwiAfabriekeo 2530483

»• ο. PHA 20619
a ^ ** * -. · »July 8, 1975

Hot gas piston machine with. a device do rules the weight of one in a work sra \: in the present. Work meditims

The invention relates to an Ilcissgaskolbeii «- mascMas iait a device for regulating the amount of weight of a working medium located in a work room, which device contains at least one storage tank for working medium, which via a first line to an outlet of the working room and via A second line is connected to an inlet of the work room, with one or more ßegelorgaii.e for the selective closure or release of the lines vorgoiie.iiox). are ..

B09887 / 0 349.

PHA "20619. 6/26/75.

Hot gas bottle machines of the type indicated are from U.S. Patents 3,372,539 and 3,546,877 acquaintance

Under hot gas piston machines are im

Within the scope of this application: Haisscaskolbenmotoreri., Gas refrigeration machines and heat pumps, in the working space of these machines the working medium is alternately pre-sealed if it is essentially in a part of the working space, in the compression space, then via a regenerator to a part space, the expansion space , conveyed, subsequently, when the working medium is essentially in the expansion space, expands and finally transported back via the regenerator to the compression room, thus completing the cycle * The! Compression and. Expansion spaces have different mean temperatures from one another during operation. _t

Kit of the device for regulating the amount of weight. Working medium in the working area of the IIeissga.i5ko3.ben machine can improve the performance of these machines by Aουdei'ung dos medium work sraitteldruckiiogels im Working space can be varied.

In the case of clQix from the USA patent 3 372 and 3 5'ί6 S77 "^"'i-Jin-teii Iioissgaskolbenmaschinon from your work space via the first line ArborLtsniediiun

509887/03 49

PHA "2061 9" 6/26/75 *

related and included in this line external compressor pressed into the storage tank, which is designed as a high-pressure container. Working medium feed into the working space from the high pressure tank takes place via the second line by opening one shut-off valve included in this line.

Instead of an external arrangement of the compressor, the compressor can also be arranged in the machine. The internal compressor can form an integral part of the machine, as described in the US patent 3 793 836 known.

A disadvantage of this known machine is that a compressor with a large compression ratio is required to press working medium under high pressure into the reservoir.

For large pressures high compression of the working medium temperatures occur on ₀ Add to this that when hot gas engines consisting of your work space ~ sucked from the compressor working medium has a fairly high temperature already, which also contributes to a high densification. This has an unfavorable influence on the service life of the compressor, and in particular on the service life of the seals, which are mostly made of plastic, and on the 1 / oboxifHlf.aex 'of the on and off valve.

509887/0349

PHA.20619 « 26.6 * 75.

In addition, the compressor forms a source of noise and mechanical vibrations,

It can also be used, especially in the case of Ileiss gas piston engines for traction purposes, it may happen that the engine is defeated, for example when suddenly stopping the vehicle while, a high The working medium pressure level prevails in the working space of the motor. The compressor coupled to the motor shaft thereby provides also the operation, so that the working medium is not more pumped from the work area to the high pressure reservoir filter can be.

It is the object of this invention to provide a

Hot gas piston machine of simpler and cheaper construction to create, in which the disadvantages described are eliminated.

The hot gas piston machine according to the invention is characterized in that an Iu. With respect to this container movable partition is arranged, which separates a first chamber for working medium, to which the first and second lines are connected, from a second chamber in which, during operation, an azeotropic mixture to maintain an at least almost constant working medium pressure in the first chamber by evaporation and condensation of this mixture or, when reducing and vitrifying the

509 887 / 03A9

■, ■. PHA "20-19"

6/26/75 '.

Work medium weight is located in the first chamber »

Under an azeotropic mixture: will

understood in technology as a mixture of two or more substances, which has a constant boiling effect and therefore a constant vapor pressure. The Zuiw.mjfiensotirtrng the vapor phase of such mixture is equal to the composition · ⁷ dex liquid phase. In this way it is achieved that the working iuediiiin stored in the container is always aiif a certain * ?. Konstantdxmck vrird held tmgeachtet whether the container working medium fed or dara \ is based is "working medium is therefore always ruater your desired print your Arbeitcraura dei · Haschine fed _c compressor is no longer necessary"

In an advantageous Ausfülrrungsf gxüx the crfindxuigsgcmäsßen Heissgaykolbenmaschaixe the r _t j3eotropische MiscJjung consists of methane and butane * ^v .id

The asiootropische mixture of methane and butane composed of about $ k MoI, ^ methane tuid ungefcihr h6 Mol. $ Butane \ n \ <± has in Raumteuperatur (ca ₀ 21 ° C) a pressure above 100 atmosphere, which makes them particularly suitable for Hoissgaskolberi -jiotorevi and ¥ ürmcjpuirjpeii with their mostly high work snediumdröcken excellent eigiif.t _t '

Another vox ^ part embodiment who he /. 'induiigsgoi: .ässen Iieissgo skoIbenraasdiine is

509 887/03 49 or.ginal, nspected

. ^ ■ - PHA c 20619.

26.6.75 «-

characterized in that the machine holds two stocks. is provided for working medium with higher bzif, lower pressure, whereby during operation in the second chamber of the container with higher pressure an azeotropic mixture is present _s which at Räumtoinperaiur e: ijj.en higher vapor pressure than the azeotropic mixture has in the second chamber of the container with lower pressure is located, with one or more, further regulating organs to: r selective connection, dex * first and second line with the retaining. ' with holi.crera or with lower pressure are provided »

In this way it is possible to use the working medium in the working area of the machine. pressure and thus the efficiency of the machine in one very wide area to regulate, this is specifically box as a power source at the Klektx'iisitntsersseugvuTg (generator) used hot gas engines important, whereby the weighed constant engine speed at dex · 'electricity absorption the engine power not hindered dux'ch Dreh.siahlvaria.tion can be"

? Another advantageous AtTsfülirungBiorri the erf Lndungsgc; .iäsf; s Heis £; gaakolbejruna.sc3'iiHö l.st dadurcli gekeunisoiclmet _t that the movable partition wall of οίκο:..; \\ ϊ, Ι & γϊα consists of j. der-in the cylinder Mrraig

509887/03 49

PIlA. .20619

led storage containers in the direction of the cylinder axis is movable to and fro, with the container, front wall, which forms part of the delimitation of the first chamber, a gate enclosed on the first and second conduits and on the inside with a Stütaeler Korü is provided that limits the movement of the bellows in the direction of the gate.

In the event of excessive discharge ^{1 of} a working medium from the first chamber, the structurally advantageous bellows is protected from damage in this way.

Preferably, the support element is as a Executed around the gate arranged seat, which worked together to form a seal with the bellows More working medium can escape from the first chamber. This is particularly advantageous if the working medium consists of relatively scarce helium and, for example, the lines are leaking »

Another advantageous embodiment of the hot gas piston machine according to the invention is characterized in that the container wall parts, which form part of the boundary of the second chamber, are provided with a capillary structure on their inside.

For example, by one or more layers of gauze or by capillary grooves in the wall parts

50988 7/0349

ΡΒΑ _β 206ΐ.9 · 26.6 "75.

Ifepil lax · structure formed so that the Fluid of the azootropical mixture by capillary forces well distributed over the inner wall, whereby a large evaporation surface is obtained.

In a further advantageous embodiment the inventive hot gas piston machine is the second chamber with a heating and / or cooling device Mistake.

. · By heating and cooling the azeotropic mixture, evaporation or condensation be accelerated, so that with a variation in the amount of working mode in the first chamber the equilibrium « state between the azeotropic mixture and the working medium is reached more quickly.

The invention is explained in more detail below with reference to the schematic and not to scale drawing explains »It shows

Fig. 1 in a longitudinal section an embodiment of the power control system of a hot gas piston engine with a single feed tank for working medium,

Figo 2 in a longitudinal section an embodiment of the storage container for working medium in which Container is arranged as a bellows partition,

3 shows an embodiment in a longitudinal section

509 887/03 49

PHA ο 2061 9 ο 6/26/75.

form of the power control system of a Helss gas piston engine with two storage tanks for working medium with higher or »lower pressure,

In Pig * 1, the reference number 20 denotes a working space of a hot gas piston engine _{t are connected} to the Leitxingen 21 and 22, which are connected at their other ends to a gate 3k of a storage container 29 for working media, which gate 3 ^ - access to a chamber 32 are separated by a movable partition wall 31 of a chamber 33, in which the azeotropic mixture of methane and butane is (ca, 54 mol. $ methane and ca, h6 MoI. ° 'butane) _$ at room temperature ( 21 ° C) has a pressure of approx. 108 at.

A check valve 23 opening in the direction of the container 29 is accommodated in the line 21 and a check valve 2k opening in the direction of the working chamber is accommodated in the line 22.

Between the lines 21 and 22 there is a short-circuit line 25 in which a shut-off element 26 is received. This makes it possible to generate pressure phases in the working medium. There is also a shut-off element 27 in line 21 and a shut-off element 28 in line 22, shut-off elements 26-27 and 28 are actuated by an electrical control element k0.

509887/0349 ORiGWAL inspected

PHA _β 20619. 26.6 * 75.

The check valve 23 allows the working medium to flow out of the working space 20 when the pressure in the working space is greater than that in the line 21; the non-return valve Zh IJisst working medium pass to the working space 20 if the pressure there is lower than in the Loitvtng 22 »

At the ^ etr-iob herx-ucht in chamber 32

an almost constant pressure, despite fluctuations in the working temperature in this chamber. If working medium escapes from the chamber 32 via the gate "} h and the line 22 to the working space 20 (shut-off valve 28 in open position), whereby the pressure in the chamber tends to decrease, the pressure of the azeotropic mixture of methane and butax in the Chamber 32 so that the partition 31 is set in motion and the Vo3uu) cn of the chamber 32 is reduced so that the pressure in the chamber 32 is maintained * At the same time, additional evaporation of liquid ezeotropic mixture takes place in the chamber 33, so that the pressure is increased there also asserts ♦

If the working medium comes out of the working line via line 21 (shut-off element 27 open) to chamber 32, whereby the chamber pressure tends to increase, the working medium pushes the partition wall 31 in the direction of the Chamber 33p the volume of which is therefore reduced. Zn. Dor Chamber 33 now occurs condensation of gaseous azeotropic

509887/0349

PIIA. 20619ο

6/26/75.

open until the nominal pressure is restored Has.

With a single storage container, a 2: i-pressure distribution can be achieved in the working i-aura of the engine reach"

The storage container "29 according to FIG. 2 asked cylindrical housing 30 in which the partition is designed as bellows »

A gauze layer 35 on the inner wall of the housing 30 in the chamber 33, which heals the azeotropic mixture, ensures good distribution of the liquid mixture on the aforementioned inner wall by means of capillary forces, which promotes evaporation when the chamber 33 is volumized. A as a seat 3k to the gate lying support member 30a restricts the Bev, ^r ath of the bellows at YolumenvergrSsseriaig dex · Kaminer 33 · 3 is ¹ is not I-gesperx-t so that the working medium more ATIS goal In the contact of the bellows with "the seat can escape the chamber.

Evaporation can continue by means of a

e 1 elcfcx "ish heating element 30b are promoted, abexdies is not absolutely necessary, condensation can be increased by means of a cooling spiral, not shown support financially.

For the power control system according to Fig »3

509887/034 9

'. "PHA., 20.61 9.

6/26/75.

The same reference numerals are used for parts corresponding to FIG. 1. However, there are now two reservoirs 4i and 42 of the type shown in FIG. provided, each of which can be connected separately to lines 21 and 22 via a switchable valve 39 - "» - π. The container kl is used to store working medium at higher pressure and the container 42 for storing working medium at low pressure Different azeotropic mixtures with a higher vapor pressure are present in the associated chambers 43 and 44 when the mixture is cleared up in the chamber 43 than that in the chamber 44.

With a structure of this type, a greater pressure ratio, for example ₀ 3 * 1 », can be achieved in the working space 20 than with only one storage container,

When the engine power is reduced

first working medium with higher pressure over the line. 21 is stored in the storage container 41, then the valve 39 is used to switch over to the storage container 42, to which the working medium is supplied at a lower pressure.

When the engine output is increased, the working medium at lower pressure first comes from the storage tank 42 via the line 22 to the working space 20, then by switching the valve 39, working medium with a higher pressure is fed from the storage tank 41 via the line 22 to the working space 20,

509 887/0 349 originally inspected

Claims (1)

PHA .. 2061 June 9, 1975 o PATENT TRANSFERS RUBCHB .. / 1, J Hot gas co! Honing machine with one: · 'Device for controlling the Gowichtswenge a work located in. a working space of the machine smodiums _t which Before "at least the direction of a Vorratsbehiilter · for working medium containing the connected via a first line to an outlet of the Arbeit.sraumes and via a second line to an inlet of the Arboitsraumes is, wherein one or more control elements are provided for the selective shut-off or, Fx * oigeben the lines, characterized in that in the storage container a movable partition is arranged in beKUg on this container, which is a first chamber for working medium to which the first and second Line are connected, separated from a second chamber, in which there is an azeotropic mixture for maintaining an at least almost constant working medium pressure in the first chamber by evaporation and condensation of this mixture or when reducing and increasing the amount of oil in the first chamber , 2 ο Haissgasko honing machine according to claim 1, characterized in that the azootropic mixture consists of methane and butane.
3 «hoissgasko3borir.ia £ ichi33o according to claim 1 or ? _f 509887/0 349 _{sqm with} INSPECTED PHA _ö 2O6l9o 6/26/75 " characterized gekennzeicfeet that the "machine with two supply" behaltern for working medium with a higher or ₀ ■ lower pressure is provided wherein during operation in the second chamber of the container with lioJierera Drueic a azeotropisclie mixture present i ^ t, which has a higher vapor pressure at Räumtemperatur than the azeotropisclie mixture which is located in the Bwejten chamber of the container lower di-piece, v / are provided obei or ¹ multiple control devices for selectively connecting said first and second conduit ijiit the container having a higher or _e lower pressure ο 4. Heissgaskolberuuaschine according to spoke 1,2 or 3 "characterized in that the movable partition consists of a bellows which can be moved back and forth in the cylinder-shaped storage container in the direction of the cylinder axis, the container end _{wall s} forming part of the boundary of the first chamber, one to the first and second conduit connected Toi owns "and is provided on the inside with a Stütκelement, the honing machine the movement of the bellows in the direction of the goal limited" 5 "Heissgnsko! k according to claim ₉ characterized golcennzeiclsnot ', that the support element a AJS arranged around the Toi ¹ seat is performed with dor c'ctu bellows audi chtend zusamiüeiiarbcitet _e 6098 87/0349 ORIGiNAL .NSPECTED PHA ₀ 20619, June 26 ί ο. bo Yi) * 2530-83 - 15 - 6ο hot gas piston welding machine according to claim 1, 2, 3, h or 5 »characterized in that the container wall parts, the parts of the boundary of the second. Form chambers, are provided with a capillary structure on their insides « 7. Hot gas piston machine according to claim 1, 2, 3 » h _t 5 or 6 »characterized in that the second chamber is provided with a heating and / or cooling device 509889/0349 Blank page