DE1963450U - DEVICE FOR GENERATING COLD AT LOW TEMPERATURES AND COMPRESSION DEVICE SUITABLE FOR USE IN THIS DEVICE. - Google Patents

Description

rttewtl-u This Unlerboe (description and Schulzonspt.) lsi the Mmt submitted "Sie * eiohl von β" who, version <Ss; originally submitted documents whether. üis legal definition of the deviation is not Dw originally submitted subjects are: -! ch -n Jen Ακ-.tscfcien, you can be seen 'edsrzeii free of charge without further inquiry ^ On request We also have photocopies.> cte- ***> fiv »ju << dM obflehM free oehefwt Oeufsches potmfanH, Gebrouchsfnu« KnMr

Device for. Generating cold "at low temperatures and suitable for use in this Torricntung te compression device "; λ

The. The innovation relates to a device for generating Cold at low temperatures, which contains at least one compressor for compressing a working medium, which is provided with a cooler for removing the heat of compression, with an outlet for compressed Medium connects to a first heat exchanger in which the compressed medium is in heat exchange contact is cooled with expanded medium, which device further contains a cold source, in to which the medium is further cooled and which the medium flows through a second heat exchanger, in which it is in thermal contact with expanded medium, the outside of the second heat exchanger with an expansion device is connected, in which the medium expands, whereupon the expanded medium at least partially flows back to the compressor.

In devices according to the present innovation, the necessary application is usually as recuperators trained, expensive heat exchangers a major disadvantage. Especially when this heat exchanger is balanced are, either the efficiency is low or the dimensions are very large.

-2-

K 60/127

The disadvantages of heat exchangers mentioned above Could be eliminated by using reversible regenerators will. In the devices according to the present Innovation - occur / however such high pressures that switching the regenerators from impermissible high switching losses "would be accompanied.

The device according to the innovation serves to "eliminate the disadvantageous parts mentioned and is characterized by that the first heat exchanger is at least partially designed as a regenerator and that the is designed as a regenerator part in open connection with the compression chamber of the compressor, wherein the outlet and inlet valves are located on the side of the regenerator facing away from the compression chamber. A device designed in this way has the advantage that the heat exchange with a higher Efficiency takes place, and that a switchover of the regenerator is not required, and it has the further advantage that the regenerator is automatic is balanced.

Another advantage of the "device according to the innovation" is nor that the medium in the part of the device behind the regenerator is always very pure is, because all impurities in the regenerator are frozen out will. This means that the working medium of the device does not need to be particularly clean, since the impurities are retained in the regenerator- so that the second heat exchanger and the expansion device cannot be clogged.

All these advantages make the device particularly suitable for generating cold after it has been fired at very low temperatures.

Another favorable embodiment of the device after the renewal has the feature that both the cooler for removing the compression heat and the generator are both accommodated in the compression chamber, so that all of the medium - that goes through the outlet and inlet, flows through the generator and cooler. \ I; ^v . /

If part of the cold / medium after the expansion device is removed from the direction of the door, e.g. * in the form of condensate, medium must be in the device can be added. According to the control is the compressor for this purpose provided with a further inlet "through the medium without passage through the generator can reach the compression room *.

In another "'advantageous embodiment of the After the hiring device, the cold source is off one or more cold gas cooling machines assembled, which only cool the medium *. "

In a further embodiment, at least the compression piston of each cold gas cooling machine can also be designed to be double-acting, with the side of this piston facing away from the working chamber being able to change the volume of a compression chamber. '_ which room is a regenerator in open connection *

This results in a / particularly simple and compact design of the apparatus for producing Cold at very low temperatures. Λ-

In a further embodiment the device according to the furnace contains the device - several in series

-to compressors, whereby the compression space of each compressor is in open connection with a regenerator belonging to this space.

The compressors can also be arranged in parallel, the compression space of each regenerator being in open communication with an associated regenerator, and the outlet and the inlet of each compressor being connected to a common buffer space. A medium with a very low boiling point, e.g. B, H ₂ or He, - be provided in the device.

The control "further relates to a compression device, which is "particularly suitable for use in a device after the control. This compression device contains at least one cylinder, with a piston-like movable therein Body for inducing the volume of a compression chamber with at least one inlet valve for expanded medium and is provided with at least one outlet valve for compressed medium, wherein further a cooler is provided for dissipating the heat of compression. According to the fire, every compression room is in place With; a regenerator in open communication with the outlet and inlet on that of the The side of the regenerator facing away from the compression chamber is located. '.- ".-"

According to another feature of the innovation is in each Compression space a regenerator and a cooler are available, which are arranged in such a way that the medium, that the compression space through the. Leaves exhaust valves, and enters them through the intake valves, through, the regenerator and the cooler flows.

-5-

Each compression room can have at least one further inlet valve / provided s, a,. Many valve e such are arranged that the medium along this the compression space without flowing through the regenerator. These valves are used as a supplement if necessary the amount of "medium in,, the device.

The. ! Firing is explained in more detail on the basis of the drawing. the. schematic and not to scale some device for generating cold "at low temperatures.

The Pig. 1 and 2 show, schematically and not to scale, two devices for generating. Cold bie low Temperaturenj each containing a compressor, a molding machine and a throttle device * The apparatus of FIG. 1 is closed, so that all medium circulates while hot of the device nach7Ij ¹ Ig. 2 condensate is discharged, the compressor being provided with an additional inlet valve to supplement the medium discharged as condensate. -. . ', ■'. '■ ".

lig. Figure 3 also shows one schematically and not literally Device for generating cold at low temperatures, the compression piston of the refrigerating machine being double-acting is trained. .- ■ -.

The.Fig. 4 and 5 show schematically and not to scale two devices for generating cold at low temperatures, where in the device according to FIG. 4 two in Compressors placed in series and in the device according to lig .. 5- two compressors placed in parallel are provided.

-6-

In. "The in ELg. 1 -shown; cylinder 1- is a piston 2" movable, which is connected by a: piston rod 3 to an engine (not shown). The cylinder 1 sits on the upper side in a cylindrical part 4 smaller diameter, continued. A Kohrkühler 5 and a regenerator 6 are housed in this cylinder part o The cylinder part 4 has a smaller diameter than the cylinder part 1 in order to limit the harmful tree. If the choice of the stroke length of the piston 2 is free, it is also possible to make the diameters of the cylinder parts 1 and 2 equal to one another. The end face of the cylinder 4 is provided with an outlet valve 7 and an inlet valve 8. From the outlet valve 7 a line 9 extends to a cooling space 10 around the cold head of a cold gas cooling machine 11 ". From this cooling space a line 12 extends to a heat exchanger 13. A line I4 connects to the heat exchanger 15, in which an expansion valve is atifgenommen 15 the expanded, condensed medium is collected in a vessel 16. in this vessel 16 is a spiral I7 is arranged, transit to _the;... "is guided medium to be cooled the volatilized by heat receiving medium flowing through the conduit 18, the heat exchanger I3 and the line 19 to the inlet valve'8 of the compressor ^.; · .-. "

The operation of the device is as follows. When the piston 2 moves upwards, the medium in the compression space is: compressed whereupon the compressed medium is passed through the cooler 5, where it heats up the compression. emits "- ^: and the .Regenerator, where it is cooled and where at the same time any impurities are frozen out, passes through the outlet valve 7 into the line 9. The compressed medium is then in the cooling

space 10 cooled by the cold head of the cold gas KühTmaschine ■ 11th The strong / cooled. Medium is cooled even further in the heat exchanger 13 on the expanded / medium. The already very cold medium is then passed through the throttle valve 15, where it partially condenses. Instead of a throttle valve, an expansion machine can also be used for expansion, in which the medium expands outwards while releasing energy. """.■;..■.".-'-".■■" ■■ - .. ■■

The expanded medium is generally brought into thermal contact in the vessel 16 with the cooling coil 17. Through the cooling coil 1? a medium to be cooled is carried. The volatile medium is then passed through the heat exchanger 1; 3, where it is compressed. Medium cools, returned to the inlet valve 8. It will be evident that the lines must have a sufficient volume so that the expansion valve can expand continuously. If necessary, the lines can also contain buffer vessels. The medium flowing back flows through the regenerator .6, WO ...: it te releases its quay and any impurities entrains In the compression space, the almost works about room temperature, takes for the media thus not be particularly clean * the medium may, for example, hydrogen or helium may be used....

In this way a device is obtained which, thanks to the regenerator, has a high efficiency Cold temperatures can be generated at low temperatures can" . -: .- "■ - - \ .. -.

With the door direction according to flg. 2, its construction and the effect of which is almost that of the Pig * 1 device correspond, the vessel 16 is for.

-8th-

~ 8-

densats -with a tap. 20 provided. Through this" Hahn "kjinn. At least one part of the X.ondens_ats as Product are discharged «.Bies" brings of course "- ■ lent a "decrease" in the amount of medium involved. Around; To supplement the amount of medium, the compressor cylinder 1 is provided with a "further. inlet valve 21, which by a line 22 with a not shown. Storage vessel, the medium can be brought into connection. If "Too little medium through during the aspiration stroke". the inlet valve 8 enters, the inlet valve 21 also opens, whereby medium out. the storage vessel in the device arrives. If the additional medium contains / contains impurities, which are frozen out in the regenerator, the regenerator must be cleaned after a certain time be «This can be done by heating.

Mg. 3 shows a "structurally different device for generating cold at low temperatures." This device contains a cold gas cooling machine which has a displacer 3ϊ and a compression piston 32 which are movable in cylinders 33 or 34 with phase difference are. The drive of the displacer and the piston can take place in a known manner, not shown. ^Next: which contains a cooler .Kühlmaschine 35j a regenerator 36 and a freezer 37 "through which parts" _which: medium flows from the compression space to the expansion space 38 ¹ 39, or vice versa.

The compression piston 32 is in this device designed double-acting. With the upper side this piston changes the "volume" .-. Of the compression chamber 38 of the cooling machine, and_ with-its other side changes this piston the volume of a further compression chamber. - 'ν;

.Meser-more KompressiOnsraum-40 provides through line 4-1. In open connection with the cooler 42 and the regenerator 43 "On the side of the regenerator facing away from the compression chamber" are the inlet valve 44 and the outlet valve 45. The medium compressed in the compression chamber 40 flows to the regenerator, through the line 46 along the head of the cold gas -Cooling machine and then through the heat exchanger 13 to the throttle valve 15. The mode of operation of this door direction is further completely similar to the device according to FIGS. 1 and 2. The design of the device according to FIG. Is "particularly beautiful and compact. _: "

4 shows a device. for generating cold, at low temperatures, a two-stage compressor being used as the compression device. the Mode of operation corresponds completely to the device according to the previous figures *

Finally, J ¹ shows Ig. 5 schematically and not to scale a device for generating cold at low temperatures, two compressors being connected in parallel with a buffer space 50 and the inlet valves with a buffer space 60. The mode of operation of the device is also the same as that of the devices according to the previous figures.

Although in the I ¹ Ig. 4 and 5 only two compressors in series. parallel to each other are turned _f is einleuchtenj that the number be extended to any size of compressors; can, - _ .

The above-described Yorrichtung after the. ! Price increases offer the possibility of generating cold! At low! Temperatures with a surprisingly high degree of efficiency « The medium present in the device may e.g. B., be hydrogen or helium. Bs- is also possible another. Medium to be used in these devices »

^: ■ .- ■ "'- Protection claims;. ■ ^.: - -10-

Claims (11)

BA. 172 568 * 29-3-67 -10-S G H ü T Z A, I. SV P H Ü C H E s 1. Device for generating cold at low Temperatures that contain at least one compressor for compressing a working medium with a cooler for. Removing the heat of compression is provided, the outlet for the compressed Medium see a first heat exchanger followed by cooling the compressed medium in thermal contact with the expanded medium * which device also has a cold source - in which the medium is further cooled and to which the medium flows through a second heat exchanger in which it is in thermal contact with expanded medium, the outlet of the second heat exchanger 'with an expansion device connected is j in. who expands the medium, whereupon the expanded medium at least partially flows back to the TKo.mpressor, thereby marked that the. first .Wärmeaauschauscher is at least partially designed as a regenerator, the part designed as a regenerator in the open Connection with the compression chamber of the compressor and the outlet and inlet valves are on the side of the regenerator facing away from the compression chamber ». 2. Apparatus according to claim T, characterized in that both the cooler for dissipating the compression heat as aue-h the regenerator are housed in the compression chamber of the compressor, so that all medium that flows through the outlet or the inlet, also through the Regenerator and cooler flows. '- " ^: - 3 * Device according to claim 1 or 2, wherein a healing of the medium is discharged after the expansion device, characterized in that the compressor has a further - "inlet": the medium is allowed to enter the compression chamber without passing through the regenerator. - '"". ". - - _: 4 «Device according to claim 1, 2 or 3> characterized in that the cold source from one or several Kaltgas-Kühlmasehinen. exists that the compressed. Only cool the medium. . . -, 5. Apparatus according to claim 1 , 2,3 or 4 »characterized in that at least the compression piston of each cold gas cooling machine is designed double-acting, the side of this piston facing away from the working chamber can change the volume of a compression chamber, with which room a Regenerator is in open connection. 6. Device according to one of the preceding claims, characterized in that it includes a plurality of compressors in series, the compression space of each compressor in open communication with a regenerator belonging to this compression space. ; -. '■ "- ■■ 7 · Device according to one of claims 1 to 5, characterized . marked} 'that, she. several compressors in parallel contains, wherein: the compression space of each compressor is in open communication with the train-listening one Regenerator, and that the outlet or », the inlet of each compressor is connected to a common PUf-. Connect the remote area. : -12- 8th*. Device naG-Ji, one of the: preceding claims, thereby geke: nnze rejects, that as a working medium Medium with a very low boiling point ζ. B. Hg or He in the device "used: is .. -." .- " 9. Compression device, -. Especially for use in a device according to one of the preceding * Sayings, which at least one- cylinder with a Movable piston-like body therein for inderning the volume of a compression space which is connected to a or more inlet valves for expanded Medium and outlet valves for compressed medium , is provided, furthermore a cooler for removing the heat of compression ^; is present, characterized in that each compression space in open Ver. . bond with, -a. Regenerator, said outlet and inlet valves to the ^rating: is the compression space side remote from the regenerator. 10 «compression device according to claim S ₁ characterized • indicates that an Ee ^ generator and a cooler are present, which are arranged such that the medium that leaves the compression chamber through the outlet valves or through the Inlet valves in this barely reaches, through the Eege- nerator and the radiator flows. 11. Compression device according to claim 9 or 10, characterized in that each KompressiOnsraum is provided with at least one further inlet valve, which valves are arranged in such a way that medium along this, the .. KO mp ressionsraum, can reach: without it flows through the ^: Eege-ner "ato; r ^.