JP5033330B2 - Condenser for air conditioning equipment, especially for automobile air conditioning equipment - Google Patents

Description

  The present invention is known from the applicant's German publication DE 199 12 181 A1. The condenser for an air conditioner according to the superordinate concept of claim 1 (ie a pipe fin block and a collecting pipe arranged laterally. A desiccant-filter having a pipe fin block extending horizontally, a condensing part and a supercooling part arranged above the condensing part and arranged parallel to one of the collecting pipes An aggregator for accommodating the insert piece and the climbing pipe, wherein the agglomerator is connected to the condensing part via the first overflow opening and the coolant connected to the supercooling part via the second overflow opening; The present invention relates to a condenser for an air conditioning facility, particularly a condenser for an automotive air conditioning facility.

Condensers for automotive air conditioning equipment are usually flown from top to bottom in multiple tides, where there is a subcooling section in the lower area of the condenser, in which the coolant is below the condensing temperature. To be cooled. This type of cross-flow condenser, which also has a built-in collector with a dryer, is known from the applicant's prior art (see, for example, patent documents 1, 2, 3). In certain installation situations in the vehicle, this structure with a supercooling section located below, i.e. when another heat transfer body, for example a supercharged air cooler, is connected in front of the condenser in the lower end face Not very effective. In this case, the supercooled part of the condenser is not sufficiently cooled. Therefore, as is known from the applicant's other prior art (see, for example, US Pat. In the first case, the known cross-flow condenser has a lower condenser part and an upper supercooling part that flow from top to bottom, the supercooling part being an assembly. It is connected to the region below the collector via a coolant conduit located in the collector or collector tube. In the second case, the known condenser (of the Applicant) has a condensing part located below, which flows through from bottom to top, ie the coolant exits the condensing part in the upper region. And then overflow into the collector, which contains the desiccant-filter-insert, which is pierced by the climber. The desiccant-filter-insert is disposed in a region below the collector, and a space for accommodating liquid and gaseous coolant is provided in the central region of the collector. A direction changing chamber is disposed below the dryer, from which the liquid coolant reaches the supercooling section located above via the climbing pipe and the upper chamber in the collector.
German publication DE10306192A1 German publication DE 10338526A1 German publication DE 19848744 A1 German publication DE19830329A1 German publication DE19912381A1

  The object of the present invention is to provide a condenser of the type mentioned at the outset (i.e. a pipe fin block and a laterally arranged collecting pipe, where the pipe fin block extends horizontally, above the condensing part and the condensing part. A collector having a supercooled portion disposed therein and disposed parallel to one of the collecting tubes and containing a desiccant-filter-insert and a climber; A condenser for an air conditioning facility, in particular a condenser for an air conditioning facility of an automobile) connected to the supercooling portion and a coolant via a second overflow opening. In particular with respect to its collector, coolant guide and coolant degassing.

  This problem is characterized in that the inflow chamber (13) is arranged in the region of the first overflow opening (8) in the collector (5), and the inflow chamber is located upward. This is solved by being defined by a plug (11) towards the bottom and by a desiccant-filter insert (10) towards the bottom. Further, the rise pipe (19, 21) having an inflow side pipe end is disposed in the collector (5), and the pipe end is a first overflow opening. It is solved by being connected to (8).

Embodiment of the Invention

  According to the present invention, the inflow chamber is arranged in the region of the coolant overflow opening from the condensing part in the collector, and the plug is directed upward in the inflow chamber, while the desiccant is directed downward. Is continuous. Thus, the coolant flowing into the inflow chamber is evenly distributed over the entire cross-section of the collector and then flows into the desiccant, forcing the coolant to flow through it from top to bottom. In that case, the coolant is dried and filtered. The desiccant is therefore arranged in the region from the center to the top of the collecting chamber, i.e. just below the overflow opening from the condensing part. Thus, effective drying of the coolant can be achieved.

  In another form of the invention, a stock chamber for the coolant is provided below the desiccant-filter insert, which stock chamber not only stores the coolant but also degass the coolant. Also used for. By reducing the flow rate of the coolant, the bubbles can separate from the liquid and rise upward.

  In another preferred form of the invention, the lower end of the climbing pipe penetrating the desiccant-filter insert piece protrudes into the stock chamber, the upper end thereof being connected to a plug, which plug is a subcooling part. Leading to a change in the direction of the coolant. The plug is inserted into the collector and sealed on the circumferential side via an O-ring, in particular between the two overflow openings. Thereby, the coolant flowing into the collector from the condensing part is prevented from reaching the supercooling part directly, i.e. without being dried, filtered and degassed.

  The subject of the present invention is that the riser pipe (19, 21) having the pipe end part on the inflow side is arranged in the feature of claim 4, that is, the collector (5), and the pipe end part is the first part. It is also solved by being connected to the overflow opening (8). According to the invention, a riser pipe is provided in the collector, which is indirectly connected to the overflow opening of the condensing part via a plug, and guides the coolant to the filter-desiccant. To do. This has the advantage that the mixing of the gaseous and liquid phases of the coolant is limited.

  In another preferred form of the invention, the riser is guided through the filter-desiccant into the room, and the coolant flows into the room at a reduced flow rate, and at the same time degassing takes place. In that case, the filter-desiccant, i.e. the molecular sieve, is not forced through, but flows through based on the density difference of the coolant. In that case, the extension of the riser further restricts or prevents the possibility of mixing the gaseous and liquid coolants, thereby better degassing of the coolant supplied to the supercooling section It is effective to be obtained.

  In another preferred form of the invention, the plug, climber and / or riser are integrally formed and preferably joined together as a constituent unit with a desiccant-filter insert, which is preformed. It can also be inserted into the collector as a part and replaced for maintenance purposes. For this purpose, the collector is provided with a removable plug.

  Embodiments of the invention are illustrated in the drawings and are described in detail below.

  FIG. 1 shows a cross-flow condenser 1 that can flow through multiple tides, which has a pipe fin block 2, collecting pipes 3, 4 arranged laterally, and an integrated collecting apparatus 5. ing. The alternating arrows P1, P2, P3, P4, P5 and P6 indicate the flow direction of the coolant in the pipe group not shown in detail in the pipe fin block 2, in which case the cooling The agent flows in through the short tube 3a positioned below and flows out through the short tube 3b positioned above. The pipe fin block 2 includes a condensing portion corresponding to arrows P1 to P5 and a supercooling portion indicated by an arrow P6 located above the condensing portion. In the supercooled part, in general, a liquid coolant flows and is cooled below the condensation temperature of the coolant by the ambient air supplied to the condenser 1. Next, the coolant leaves the condenser 1 via the short tube 3b.

  FIG. 2 shows a cross-section of the collector 5 having the condenser tube 4 of the condenser 1 in a 3-D view. Only two upper chambers 4a, 4b of the collecting pipe 4 are shown, which are connected to the last passage P5 or subcooling part P6 of the condenser part of the condenser. The collector 5 consists of a cylindrical container assembled from a pipe 5a and an extruded profile piece 5b, as is known from the prior art mentioned at the outset. The collector 5 is closed so that it cannot be removed at the bottom by a soldered bottom 6, and the top is terminated by a removable closure plug 7. The chamber 4a is connected to the inside of the collector 5 on the coolant side via the first overflow opening 8 and the chamber 4b is connected via the second overflow opening 9. Arranged in the collector 5 is a filter-desiccant 10 (also referred to as desiccant-filter-insert), which-as known from the prior art-for drying materials, so-called molecular sieves. It is filled and has a screen, for example in the form of a fleece (not shown), for filtering the coolant on the upper and lower sides, ie the coolant inflow side and the coolant outflow side. A plug 11 is arranged above the desiccant 10, and the plug is sealed against the inside of the profile piece 5 b on the circumferential surface side via an O-ring 12 in the region between the two overflow openings 8, 9. Has been. An inflow chamber 13 is formed in the region of the overflow opening 8 between the stopper 11 and the desiccant 10. A stock chamber 14 is provided below the desiccant 10 and is used to store liquid and / or gaseous coolant. Further, a climbing pipe 15 is arranged in the vicinity of the wall in an eccentric manner inside the collector 5, and the climbing pipe is guided through the filter-desiccant 10 and sinks downward into the stock chamber 14 or bottom. 6 and extends upward into the plug 11, and the plug connects the climbing pipe 15 through the opening 11 a to the chamber 4 b and accompanyingly the supercooling portion P 6. Therefore, a direction change (not shown) of the coolant from the climbing pipe 15 into the chamber 4b is performed in the stopper 11. The climbing pipe 15 has an opening 15 a in the region of the bottom 6, and the coolant can flow into the climbing pipe 15 through the opening.

  The function of the collector 5 with the filter-desiccant 10 described above is as follows: the coolant flowing out from the last passage P5 of the condensing part of the condenser 1 passes through the overflow opening 8 into the inflow chamber. 13 is reached, where the coolant is evenly distributed across the cross-section of the collector 5, thereby reducing its flow rate. From the inflow chamber 13 the coolant flows (forcefully) through the filter-desiccant 10, through which it is filtered and dried. After exiting the filter desiccant 10, the coolant reaches the stock chamber 14 where its flow rate is further reduced. In that case, the gaseous component of the coolant can be separated and rises upward and collects in the region above the stock chamber 14. In the region below the stock chamber 14, the bottom 6, the coolant flows into the climbing pipe 15 via the inflow opening 15 a and flows through the climbing pipe from the bottom to the top, that is, the filter in the climbing pipe 15 It crosses the desiccant 10 and reaches the plug 11 where it is redirected into the chamber 4b and from there into the supercooling part P6.

  The collector 5 has a removable closure 7 so that the filter-desiccant 10, the climber 15 and the closure 11 can be replaced for maintenance purposes. This can be handled particularly easily when the filter-desiccant 10, the climber 15 and the plug 11 are formed as a pre-formed and integrated component unit.

  FIGS. 3 and 4 show another embodiment of the present invention as an aggregator 5 having a collecting pipe 4, in which case the same reference numerals are used for the same parts. . The chambers 4 a and 4 b of the collecting pipe 4 are connected to the collecting device 5 through overflow openings 8 and 9. In the lower region of the collector 5, the filter-desiccant 10 is arranged, which is only partly shown in FIG. 3 and therefore only by the upper front flange 10a and the lower front flange 10b. The filter-desiccant 10 is penetrated by the climbing pipe 15. In the region of the overflow openings 8, 9, a stopper 16 is arranged in the collector 5, which has two passage openings 17, 18 aligned with the overflow openings 8, 9, An O-ring 16a is arranged for sealing between the passage openings. The passage opening 17 is connected to the rising pipe 19 through the inflow passage 17a, and the pipe end portion above the rising pipe communicates with the inflow passage 17a and is accommodated by the plug 16. The riser pipe 19 extends downward to the vicinity of the front flange 10a of the filter-desiccant 10 and has a diametrically opposed outflow opening 19a at the lower pipe end. Below the filter-desiccant 10, ie between the lower front flange 10 b and the bottom 6, is provided a direction change chamber 20 for the coolant, below the climbing pipe having an outflow opening (not shown). The end portion 15a protrudes into the direction change chamber. The upper end 15b of the climbing pipe 14 is accommodated in the stopper 16 and connected to the direction changing passage 18a. The direction changing passage is connected to the passage outflow opening 18 and the chamber 4b of the supercooling section P6 along with the passage outflow opening 18. It leads into.

  The collector 5 with the riser 19 operates as follows: the coolant reaches the riser 19 directly from the last flow passage P5 of the condensing part via the chamber 4a and the inlet opening 17, in which It flows downward. Through the outlet opening 19a, coolant flows out of the riser pipe 19 on both sides and is therefore distributed to the inner cross-section of the collector 5, thereby resulting in a flow rate reduction. The coolant then flows into the filter-desiccant 10 and flows (forcefully) from top to bottom. In that case, the coolant is filtered at the inlet and outlet by a fleece (not shown). The coolant thus dried flows out from the filter-desiccant 10, reaches the lower direction changing chamber 20, and then flows into the pipe end 15 a below the climbing pipe 15. From below to up to the plug 16, the direction is changed in the plug, and is guided into the chamber 4 b leading to the supercooling section P 6. As the coolant flow is decelerated as it flows out of the riser 19, gaseous components can be separated from the liquid coolant, which rises upward. Further degassing can be performed on the way through the filter-desiccant 10. The riser 19 and its direct coupling to the chamber 4a prevent the separated gas component from mixing with the liquid coolant supplied from the condensing part. A gas chamber for the separated bubbles can thus be formed below the plug, which is separated and sealed against the condensing part and the incoming coolant.

  FIGS. 5 and 6 show, as a third embodiment of the present invention, an aggregator 5 with a collecting pipe 4 connected, i.e. with a riser pipe 21 passing through the filter-desiccant 10 (again the same The same reference numbers are used for the parts). The arrangement and formation of the plug 16 corresponds to that of the above-described embodiment shown in FIGS. Similarly, the pipe end portion above the rising pipe 21 and the climbing pipe 15 are accommodated in the stopper 16 and connected to the chambers 4 a and 4 b of the collecting pipe 4 through the direction changing passage in the stopper 16. A chamber 22 is disposed below the filter-desiccant 10 and the lower front flange 10b, and a pipe end 21a below the rising pipe 21 communicates with the chamber. The chamber 22 is defined by the front flange 22a in the downward direction, but is open in the upward direction, and a direction changing chamber 20 having a pipe end 15a below the rising pipe 15 is provided there. It has been. The filter desiccant has a filter or sieve (not shown) formed as fleece on both sides in the region of the front flanges 10a, 10b.

  The embodiment of the collector 5 with the connected riser 21 operates as follows: the coolant flows in the riser 21 directly—similarly to the embodiment described above—from top to bottom. It flows through and rises out of the rising pipe 21 for the first time in the chamber 22 provided in the lower pipe end 21a. Within the chamber 22, the coolant is distributed across the collector cross-section, thereby providing the possibility of slowing the flow rate and concomitantly separating the gaseous components. Thus, a portion of the coolant climbs upward through the filter-desiccant 10 and comes in contact with the dry substance along the way, thereby causing drying. In that case, the filter-desiccant 10, i.e. the dry substance, is not forced through. The other part of the coolant flows into the direction change chamber 20 as indicated by the arrow U, and then flows into the pipe end 15 a below the climbing pipe 15. Next, the coolant flows into the supercooling section P6 through the climbing pipe 15 and the plug 16 as in the above-described embodiment.

  The present invention is not limited to a filter-drying agent filled with granules made of a hygroscopic material. Within the framework of the invention, a compact dryer made of a solid plastic material with an inserted molecular sieve is also possible, as described in the applicant's German publication DE 10234889A1.

Fig. 2 shows a cross flow condenser having a supercooling section located at the top and a collector arranged on the side. It is shown in a collector cross section with adjacent collector tubes. Fig. 3 shows an aggregator (second embodiment of the invention) having risers. FIG. 3 shows the collector shown in FIG. 3 with a stopper and a filter-desiccant. Fig. 4 shows an aggregator (third embodiment of the invention) having a riser through the filter-desiccant. The collecting tube shown in FIG. 5 is shown with a stopper and a filter-desiccant.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Condenser 2 Pipe fin block 3, 4 Collecting pipe 4a, 4b Collecting pipe chamber 5 Collecting apparatus 6 Bottom 7 Closure plug 8, 9 Overflow opening 10 Filter-desiccant 10a, 10b Front flange 11, 16 Plug 12, 16a O-ring 13 Inflow chamber 14 Stock chamber 15 Climb pipe 17, 18 Passage opening 17a Inflow passage 18a Direction change passage 19, 21 Rise pipe 19a Outflow opening 20 Direction change chamber 22 chamber

Claims (15)

Condensing part (P1 to P5) having a pipe fin block (2) and collecting pipes (3, 4) arranged on the sides thereof, the pipe fin block (2) being constituted by a horizontally extending pipe And a desiccant-filter insert (10) and a climb having a supercooling part (P6) arranged above the condensing part and arranged parallel to one collecting pipe (3, 4) Having a collector (5) containing a tube (15), the collector (5) being connected to the condensing part (P5) and the coolant via the first overflow opening (8); In the condenser for air conditioning equipment (1), in particular the condenser for automotive air conditioning equipment (1), which is connected to the supercooling part (P6) via the second overflow opening (9) as a coolant,
An inflow chamber (13) is arranged in the region of the first overflow opening (8) in the collector (5), and the upper side of the inflow chamber (13) is defined by a stopper (11). The lower part is defined by a desiccant-filter insert (10),
In the collector (5), below the desiccant-filter insert (10), a stock chamber (14) for coolant is arranged,
The condenser characterized in that the space of the stock chamber (14) is larger than the space of the inflow chamber (13).   A climbing pipe (15) is provided near the inner wall of the collecting pipe (5) and is guided through the desiccant-filter insertion piece (10). Further, the climbing pipe (15) The condenser according to claim 1, characterized in that it enters the stock chamber (14) at or near the bottom of the collecting tube (5) and extends upward into the plug (11).   The ascending pipe (15) passing through the desiccant-filter insert (10) has an inflow opening (15a) and an upper outflow end (15b) disposed in the stock chamber (14). The condenser according to claim 2, characterized in that the outflow end (15b) is connected to the supercooling section (P6) via a plug (11). Condensing part (P1 to P5) having a pipe fin block (2) and collecting pipes (3, 4) arranged on the sides thereof, the pipe fin block (2) being constituted by a horizontally extending pipe And a desiccant-filter insert (10) and climb having a supercooling part (P6) arranged above the condensing part and arranged parallel to one collecting pipe (3, 4) Having a collector (5) containing a tube (15), the collector (5) being connected to the condensing part (P5) and the coolant via the first overflow opening (8); In the condenser for air conditioning equipment (1), in particular the condenser for automotive air conditioning equipment (1), which is connected to the supercooling part (P6) via the second overflow opening (9) as a coolant,
A riser pipe (19, 21) having a pipe end on the inflow side is arranged in the collector (5), and the pipe end is connected to the first overflow opening (8),
The riser pipe (19) and the climbing pipe (15) are arranged near the inner wall of the collecting pipe (5),
Climbing pipe (15), a desiccant - enters the filter insert (10) is guided through a chamber where the coolant is provided in the bottom or near the collecting pipe (5) (20) direction A condenser for an air conditioner, characterized in that it extends so as to be converted and flow upward.   The pipe end on the inflow side of the riser pipe (19, 21) is accommodated in the plug (16) in the collecting pipe (5), and the plug (16) is connected to the second overflow opening from the first overflow opening. 5. Condenser according to claim 4, characterized in that it extends into the opening (8, 9).   The riser pipe (19) has a pipe end on the outflow side, the pipe end being arranged above the desiccant-filter insert (10, 10a). The condenser as described in.   The riser pipe (21) passes through the desiccant-filter insert piece (10) and communicates with the chamber (22), and the chamber (22) is below the desiccant-filter insert piece (10). 6. The condenser according to claim 4, wherein the condenser is arranged.   The pipe end (21a) on the outflow side of the riser pipe (19, 21) has an outflow opening facing the diameter direction of the riser pipe (19, 21). The condenser as described in.   The desiccant-filter insert piece (10) is arranged in a region below the collector (5), and the desiccant-filter insert piece (10) is penetrated by the climbing pipe (15). The condenser according to any one of claims 4 to 6, and 8.   The climbing pipe (15) has an upper pipe end (15b), and the pipe end (15b) is accommodated in the stopper (16) in the collecting pipe (5), so that the second overflow opening The condenser according to claim 1, wherein the condenser is connected to the section (9).   11. The plug (11, 16) has a direction change passage (11a, 18a) leading from the climber pipe (15, 15b) to the second overflow opening (9). The condenser of any one of these.   12. The plug (11, 16) according to any one of the preceding claims, characterized in that the stopper (11, 16) can be sealed to the collector (5) on the circumferential side, in particular by means of an O-ring (12, 16a). The condenser described.   13. The plug (11, 16), the climbing pipe (15) and / or the riser pipe (19, 21) are formed in one piece, in particular as a plastic injection-molded part. The condenser according to claim 1.   The plug (11, 16), climber (15), riser (19, 21) and / or desiccant-filter insert (10) form a replaceable component unit. The condenser of any one of -13.   15. Condenser according to any one of the preceding claims, characterized in that the collector (5) is closable by a removable closure plug (7).

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