ES2336530B1 - COOLING DEVICE. - Google Patents

Abstract

Cooling device.

The invention relates to an apparatus of cooling with a cooling space that is deflectable out condensed water through a water conduit condensed (15). According to the invention, to the condensed water pipe (15) is associated a closing element (23, 23 ') that blocks a air passage through the condensed water line (15) to the cooling space

Description

Cooling device.

The invention relates to an apparatus of cooling according to the general concept of claim 1.

The refrigeration devices have a interior space surrounded by a thermally insulated housing, which it is cooled by an evaporation unit of a circuit of cooling agent. On cooling surfaces respective of the cooling apparatus precipitates water condensed which is accumulated in the interior space of the housing and led out of the housing through a water conduit condensed A generic refrigeration apparatus of this type is known from EP 0 775 879, in which the water pipe condensed flows into a bucket of condensed water, which is arranged in the area of a compressor of the agent circuit coolant to use its heat for water evaporation condensed

In the interior of the device housing refrigeration usually prevails a certain negative pressure due to the difference in temperature with respect to the environment, or be, due to air circulation, by a blower. Because the negative pressure prevailing in the interior space of the housing, backflows of outside air can occur through the duct of condensed water to the interior space of the housing. On happening this, the humidity of the outside air can precipitate in the condensed water conduit and, if necessary, freeze there, to through which the condensed water line can be clogged detrimentally.

The task of the invention is to put provision of a refrigeration apparatus in which, reliably, condensed water can be driven out from space inside the housing.

The task is solved by characteristics of claim 1. In the claims secondary are exposed advantageous improvements of the invention.

According to the characterizing part of the claim 1, a condensed water line is associated with a closing element. The closing element blocks on the one hand a air passage from outside air through the water pipe condensed to the interior space of the housing. On the other hand, a condensed water outlet from the condensed water conduit is not damaged by the closure element.

The condensed water line may be formed as a siphon that has two duct sections bent in the opposite direction. Of them, a first section of conduit is technically connected as for the current with the interior space of the housing. The second duct section it flows through an overflow opening in the surroundings. With a corresponding water column in the two sections of siphon conduit that correspond to each other avoids a free exchange of air between the interior space of the housing and the environment.

However, cases are problematic in that there is no accumulated or only a reduced amount of water in the siphon, for example, in case of a first use of the refrigeration apparatus. Since none is formed here water column in the siphon, in the state of the art can flow outdoor air without impediments through the water pipe condensed in the direction of the interior space of the housing. In contrast, according to the invention the closure element blocks the condensed water conduit against an air passage regardless of whether or not water is present in the siphon condensed enough.

Preferably, the second duct section presenting the overflow opening can be erected vertically up. In this case, the closing element can rest on the open end of the duct section due to the effect of the force of gravity and close the conduit of Condensed water. On the other hand, with a growing water column in the condensed water line, the closing element is pressed upwards by the outgoing condensed water unlocking the exit opening.

For the guide of the lifting movement, the closure element may present a guide section that penetrates into the overflow opening of the condensed water conduit. He closure element is driven by the guide section in the longitudinal direction of the axially condensed water conduit to an unlocking position as soon as condensed water comes out of the condensed water conduit. For the limitation of the movement of elevation, a stopper of the closing element may be associated movement that limits the lifting movement upwards.

The movement stop can serve in double function at the same time as transverse support, on which it is supported a condenser heat exchanger of the agent circuit refrigerant of the refrigeration apparatus.

In another embodiment, the element of lock is arranged pivotable about an axis arranged in the opening edge thus does not fall out of position.

The annular wall closest to the axis is adapted as a stop of rotation of the closing element around the axis at contact a second duct section so a additional travel stop.

Below is an example of embodiment of the invention by means of the attached figures.

Shows:

Fig. 1 in a schematic representation of partial section, a refrigeration apparatus;

Fig. 2 and 3 the closure element in a closed position and in an unlocked position respectively;

Fig. 4 the closing element in a perspective representation;

Fig. 5 perspective of a second embodiment of the pivoting closing element in the closed position; Y

Fig. 6 perspective of the second embodiment of the Pivot locking element in open position.

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In figure 1 it is shown in a partial view schematically the rear area of a housing of the apparatus 1 of a refrigeration apparatus Housing 1 presents in a known manner on the rear wall 3 an evaporation unit 5 only indicated. This is part of the cooling agent circuit and is used for cooling of the interior space of the housing. In the area of bottom, the rear wall 3 has a posterior fissure 7, in the that the compressor 9 of the circuit of cooling agent

During cooling operation, in the inner surface of the rear wall of the housing 3 is condenses water To collect the condensed water, on the inner side of the housing is formed in the inner wall of the housing 3 a wall projection 11 having a channel on the upper side manifold 13. Collector channel 13 is technically connected in as for the current through a condensed water conduit 15 with a bucket of condensed water 17 that is arranged outside the interior space of the housing on the compressor 9. Water condensed collected in the collecting channel 13 is conducted through from the condensate line 15 to the condensate tank 17, and there it is evaporated using the energy that is released from the compressor 9.

The condensed water line 15 is connected with its free end to a vertical splice fitting 16 of the bowl of condensed water 17. The fitting 16 is formed here with uniform material and in one piece with cuvette 17 and protrudes from the base of the condensed water basin 17. The open end towards above splice fitting 16 forms the overflow opening 20, through which opening edge 19 condensed water can flow out to the bucket 17.

Together, the condensed water conduit 15 together with the splice fitting 16, a siphon with two sections of duct 21, 22 bent in the opposite direction. In the curvature with U-shaped siphon accumulates the condensed water that is found as a water column s in each of the duct sections 21, 22 that communicate with each other. The condensed water accumulated there prevents a free exchange of air between the interior space of the housing and surroundings. Consequently, an air reflux is avoided outside through the condensed water conduit 15 into space inside the housing.

On the upper opening edge 19 of the fitting splice 16 sits according to figure 1 a closure element 23, as augmentedly represented in the following figures 2 to 4. Due to this, the closure element 23 is configured with lid shape with an annular wall 25 and a base 27 on the side frontal. On the base 27 an arm is formed as a guide section guide 29 extending in axial direction of the closure element 23 Cap-shaped In the installation state, the guide arm 29 penetrates the overflow opening 20 of the fitting 16 and it is movable by elevation in the longitudinal direction of the fitting splice 16.

The guide arm 29 is configured in the section cross-shaped star with three arm walls overhangs that are distanced from each other through a peripheral angle In the installation position, the walls of the arm delimit together with the inner wall of the fitting 16 areas of passage 30, through which the condensed water arrives to overflow opening 20.

Figures 1 and 2 show the element of closure 23 in its closed position, in which with its weight force FG is supported on the upper opening edge 19 of the fitting junction 16. For a motion guide without friction, enter the guide arm 29 and the inner wall of the fitting 16 is provided a radial clearance r sparse. The radial clearance r is configured according to figures 2 and 3 smaller than a space annular, that is, annular distance to between the annular wall 25 of the closure element 23 and the outer side of the splice fitting 16. In the closing position of the closing element 23 shown is blocked a backflow of outside air through the water pipe condensed 15 to the interior space of the housing. The effect of blocking of blocking element 23 is independent of whether in the siphon is condensed enough condensed water or not. This means that, even in a first use of the apparatus of cooling, during which water has not yet accumulated condensed in the siphon, air reflux into space is avoided inside the housing.

On the other hand, the case is shown in Figure 3 that in the second duct section 22 the water column s ascend and overflow through the passage areas 30 of the element of closure 23 to the opening edge 19 of the opening of overflow 20. In this case, the water column s increasing lifts the closure element 23 to an unlocked position, such as is shown in figure 3. The condensed water that spills runs through the annular space along the fitting 16 to the condensed water bucket 17. To prevent a fall out of the closure element 23 from the fitting 16, the lifting movement is limited upwards by means of a support cross-section 24 on which components of the cooling agent circuit. The axial length of the guide arm 29 is configured so that it still penetrates the opening of overflow 20 in case of a position of maximum height of closure element 23.

Figure 5 shows another embodiment of the closure element 23 'where it is pivotally attached to the opening edge 19 by means of a rotation axis 32.

On the other hand, the case is shown in Figure 6 that in the second duct section 22 the water column s ascend and overflow the opening edge 19 of the opening of overflow 20. In this case, the water column s increasing Raise the closure element 23 'to an unlocked position. He condensed water that spills runs through the annular space along junction fitting 16 to the condensed water tank 17. To prevent the closure element 23 'from falling out of the fitting splice 16, the closure element 23 'is attached to the edge of opening 19 at a pivot point 32 pivotally and when turning, the annular wall 25 closest to the axis of rotation, contact the wall of the splice fitting 16 limiting the lifting and turning movement. The axial length of guide arm 29 is configured such that centers the closing element 23 'in its closing movement.

List of reference symbols

one

Case

3

Back wall

5

Evaporation Unit

7

Posterior fissure

9

Compressor

eleven

Wall overhang

13

Collector channel

fifteen

Condensed Water Duct

16

Splice fitting

17

Condensed Water Bucket

19

Opening edge

twenty-one

Duct section

22

Duct section

23, 23 '

Closing element

25

Annular wall

27

Base

29

Guide arm

30

Passage Areas

32

Axis of rotation

to

Annular distance

s

Water column

r

Radial clearance

Claims (14)

1. Refrigeration apparatus with a cooling space (6), from which condensed water is diverted out through a condensed water pipe (15), characterized in that a closing element is associated with the condensed water pipe (15) (23, 23 ') that blocks an air passage through the condensed water line (15) to the cooling space. 2. The cooling apparatus according to claim 1, characterized in that the condensed water line (15) has a siphon with two duct sections (21, 22) bent in the opposite direction, from which the first section of the duct (21) leads to the cooling space (6) and the second duct section (22) has an overflow opening (20). 3. Refrigeration apparatus according to claim 2, characterized in that the closure element (23, 23 ') in a closed position sits on an opening edge (19) of the overflow opening (20) of the second section of duct (22). 4. Refrigeration apparatus according to claim 3, characterized in that the closing element (23, 23 ') closes the overflow opening (20) with its weight force (FG). 5. Refrigeration apparatus according to one of the preceding claims, characterized in that the closing element (23, 23 ') unlocks the overflow opening (20) with increasing water column (s) in the condensed water pipe (15). . 6. Refrigeration apparatus according to one of the preceding claims, characterized in that the closing element (23, 23 ') has for the movement guide at least one guide section (29) that penetrates the overflow opening (20) of the second duct section (22) of the condensed water duct (15). 7. Refrigeration apparatus according to one of the claims set forth above, characterized in that a movement stop (24) is associated with the closing element (24) which delimits upwards a lifting movement of the closing element (23, 23 '). 8. Refrigeration apparatus according to claim 7, characterized in that the movement stop (24) is a support element on which components (5) of the refrigeration apparatus are supported. 9. Refrigeration apparatus according to one of claims 6 to 8, characterized in that the cross-section of the guide section (29) of the closure element (23, 23 ') is smaller than the cross-section of the water conduit stream condensed (15). 10. Refrigeration apparatus according to one of the preceding claims, characterized in that the closure element (23, 23 ') is formed as a lid with a lid base (27) and an annular wall (25) that overlaps the opening overflow (20) of the second duct section (22). 11. Refrigeration apparatus according to claim 10, characterized in that the annular wall (25) of the closure element (23, 23 ') is distanced from the second duct section (22) through a free distance (a). 12. Refrigeration apparatus according to one of claims 6 to 11, characterized in that the guide section (29) of the closure element (23, 23 ') is arranged through a radial clearance (r) in the second duct section ( 22) of the condensed water conduit (15) which is preferably smaller than the free distance (a) between the annular wall (25) and the second conduit section. 13. Refrigeration apparatus according to one of claims 3 to 12, characterized in that the closure element (23 ') is pivotally arranged around an axis (32) disposed on the opening edge (19). 14. Refrigeration apparatus according to claim 13, characterized in that the annular wall (25) closest to the axis (32) is adapted as a stop of rotation of the closure element (23 ') around the axis when contacting a second duct section ( 22).