DE8002070U1 - COMPRESSOR COOLING ARRANGEMENT - Google Patents

Description

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if. 12.1979 ¹ ^ ¹ "1""'"*' * PHI

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The innovation relates to a cooling arrangement with a compressor, at least one condenser, at least one dry filter, at least one capillary tube, at least one evaporator and one in this arrangement

5 circulating coolant.

In normal cooling arrangements, this is a dry filter _ Mounted between the condenser and the capillary tube

and the refrigerant flowing through this tube is cooled in order to increase the thermodynamic effect of the arrangement, in that a heat transfer takes place therein to the refrigerant which has left the evaporator in a cold state and returns to the compressor through a return pipe. Various practical methods of accomplishing this heat transfer are known. In such a practical method, the capillary tube extends a certain distance within the reflux tube so that the coolant brushes directly along this tube. In a second method, the capillary tube is a large f \ 20 distance tightly wrapped around the Rückflüssrohr while extending partially in a third method, the capillary tube within an axial groove in the reflux tube.

The three procedures described are proportionate

^ heavily involved and therefore expensive.

• In U.S. Patent No. 2,448,315, the refrigerant is cooled before it reaches the evaporator, characterized in that a special heat exchanger is used, the wirdi disposed between the condenser and the drying filter this method does not adhere to the structural complications of öbenbeschriebenen methods, but it is necessary that in the cooling arrangement a further single part with a large overall size (because it is a sintered mass

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contains) so that this cooling arrangement flees j in those cooling devices j irisbesöfider-e household = j

cooling devices, in which the for | the arrangement available RäUffi is very limited ι Except "| I said, the cost of the heat austauschet ¹ UIID its installation in the arrangement is equal to or larger than the cost of the above-described method"

The present innovation has the task of the coolant that flows to the evaporator, with the help of the refrigerant leaving this evaporator, to cool thereby, that an element is used that also fulfills a further function in the cooling arrangement, so that the compli- ^ - cations of the application of a special heat exchanger to be avoided according to the state of the art * Next, the innovation has the task at the same time to improve the drying effect on the coolant,

According to the innovation, these tasks are achieved in a cooling arrangement with a compressor, at least one condenser, at least one dry filter, at least one capillary tube, at least one evaporator and a coolant circulating in the arrangement in that a channel extends through the dry filter through which the The coolant leaving the evaporator is guided so that the filter also acts as a heat exchanger ζ 25.

According to a preferred embodiment of the innovation, the filter is arranged vertically.

According to yet another embodiment of the innovation the filter includes a jacket that defines a space with the channel, which with the condenser and the Capillary tube is connected and in which the drying material is located.

One embodiment of the innovation is in the drawing and is described in more detail below.

The single figure shows schematically a cooling arrangement which contains the device, which acts as a heat exchanger and dryer and is shown in axial section.

In this figure, 1 is a common one schematically

k. 12,1979 3 PHl 79002

Coinpressoi ⁴ denotes, the discharge side of which is connected to the inlet of a condenser 3 via the pipe 2. The outlet of the condenser is connected via the pipe h to eirior device 5 which is arranged vertically and

§ acts as a dry filter and heat exchanger at the same time.

In this AUsführungsf orni the device 5 includes a Aussehmantel 6 _S of ISTJ closed at its ends 7 * 8 and disposed over eifiem inner channel 9 with the shell forms a space 10 _(separate into three j

ίΟ Interconnected Zones 13, 14 and I5

is divided by a pair of perforated or otherwise permeable faceplates 11j 12. The TrocknUngsmaterial- ^ ^- I3 charge consisting of molecular sieves of the skilled person known type, is mounted in the middle zone "The Ei.ide of the tube 4 is passed through the jacket 6 in the vicinity of its upper end and opens into the zone of the Gap and is attached to the jacket, for example by welding.

The capillary tube 16 opens into the zone Ik ₁ . ie at the lower end of the device 5j and its end is attached to the jacket 6, for example by welding.

The capillary tube 16 is connected to the inlet of an evaporator 17, the outlet of which is connected to the suction side of the compressor 1 via the return tube 18, 19 and the channel 9 ( '25. This channel could form part of the return tube itself, ie that the Jacket 6 can be attached directly to this pipe.

In operation, the coolant moves through the cooling arrangement in the direction of the arrows.

The coolant, which leaves the condenser 3 while still hot, enters the device 5, in which it is dried through contact with the molecular sieves in zone I3 and through the coolant, which is still quite cold, which the evaporator 17 via the part 18 of the The reflux tube leaves is cooled. The still rather cold refrigerant flows through the channel 9 ^to the compressor 1 via the other part I9 of the return pipe. The direction of the coolant flow in the space 10 is the same as

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in the channel 9 * The molecular sieves are also cooled, whereby their drying ability is increased ₄

The arrangement described ensures that the Coolant, if it enters the Käpiüärf öhr 16, still

g is completely in the liquid state, which results in great thefmodynamic advantages , since in the device 5 the hot agent is on the outside with respect to the colder agent, there is the further advantage that the device is no longer necessary or what

1Ö Was previously common) ^to isolate the return pipe 18, 19 "After it has flowed into the space 10, the coolant leaves the device 5 through the capillary tube 16, expands in the evaporator 17" leaves this evaporator in a fairly cold state and becomes Before it returns to the compressor 1, it is used in the device 5 for cooling the still hot agent from the condenser, as has already been mentioned.

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Claims (6)

f.12.1979 "1!" i "phi 79002 PROTECTION CLAIM 1. Cooling arrangement with a compressor, at least one Condenser, at least one dry filter, at least one capillary tube, at least one evaporator and one coolant circulating in the cooling arrangement, thereby characterized in that 'extends through the dry filter, a channel through which the coolant is passed, which the Leaves the evaporator, so that the filter also acts as a heat exchanger. 2. Arrangement according to claim 1, characterized in that that the filter is arranged vertically. 3. Arrangement according to claims 1 and 2, characterized in that that the filter contains a jacket which forms a space with the channel in which the drying material is attached and de: · / at a first end with is connected to the condenser and at the other end to the capillary tube. 4. Arrangement according to claims 2 and 3j, characterized in that that in the case of the vertically arranged filter, its first end connected to the condenser is its upper end is. 5. Arrangement according to one or more of the preceding claims, characterized in that the coolant flows through the channel and the intermediate space at the same time. 6. Arrangement according to one or more of the preceding claims, characterized in that the channel has a Part · of the reflux pipe, which the evaporator with connects to the compressor. 30th , · <Il << «i Ii fiii ι '.. ^e ί ί ί! * i ί J, '! i ti ι: ι. · i ·. ι ι it Ii «I in« H 4 I.