JP2004309127A - Refrigerant condensing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a refrigerant condensing device, particularly a refrigerant condensing device for an automobile, reducing a required mounting space. <P>SOLUTION: The refrigerant condensing device, particularly the refrigerant condensing device for the automobile, has a large number of flow devices arranged substantially parallel with one another; two header pipes arranged at the respective end parts of the flow device to establish fluid connection between the flow device and the header pipes; at least one separator for partitioning the header pipe into at least one first region and at least one second region in a substantially airtight and liquid-tight manner; and at least one liquid receiver arranged substantially parallel with at least one header pipe, having at least two fluid connection parts to the header pipe, and storing at least one filtering device and/or dryer at least partially with moisture absorptive drying agent. The header pipes and the liquid receiver are arranged substantially horizontally. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a refrigerant condensing device, and more particularly to an automotive refrigerant condensing device.

  The condenser known from Patent Document 1 has a cooling fin block, each having a header pipe disposed at an end of the cooling fin, and a refrigerant receiver being disposed in parallel with one of the header pipes. This liquid receiver is fixed to one of the header pipes using a flange.

This condenser has the disadvantage that it is relatively expensive and requires a relatively large installation space alongside it.
European Patent No. 0769666

  An object of the present invention is to provide a condenser having a reduced required installation space.

  The solution means of the present invention is exemplified by the refrigerant condensing device described in each claim.

Embodiments for carrying out the invention

  According to the present invention, the above-mentioned problem of the present invention is that each end of the flow device is arranged so that a fluid connection is established between a number of flow devices arranged substantially parallel to each other and the flow device and the header pipe. This is achieved by a refrigerant condensing device having two header tubes arranged in the section.

  The refrigerant condensing device further includes at least one separation device that partitions the header tube into at least one first region and at least one second region in a substantially air-tight and liquid-tight manner.

  Furthermore, at least one liquid receiver is provided, which is arranged substantially parallel to at least one of the header tubes and has at least two fluid connections to the header tube. And substantially having one filtration device and / or drying device with at least one hygroscopic desiccant. At that time, the header pipe and the liquid receiver are arranged substantially horizontally.

  According to the invention, a distribution device is a device suitable for distributing a liquid and / or gaseous medium. Within the framework of the present invention, the flow device is preferably a flat tube. These flat tubes can have one, preferably two or more channels. The longitudinal direction of the flow device is preferably aligned vertically.

  In the frame of the present invention, the fluid connection part is a hole through which a coolant can flow.

  In a preferred embodiment, the filtration device and the drying device are combined into one structural unit so that the fluid in the receiver is forced through the filtration device before entering the drying device.

  A filtration device is a device suitable for filtering a specific component from a refrigerant when the refrigerant passes through the filtration device.

  The drying device serves the purpose of removing moisture from the refrigerant as it passes through the drying device. In this case, for example, the desiccant can be surrounded by a woven fabric which serves as a filtering device.

  In another preferred embodiment, the receiver has a substantially horizontal central plane that divides the receiver into a first upper space and a second lower space. In other embodiments, the upper space and the lower space may be substantially the same size. In other embodiments, the ratio can be such that the upper region is greater than the lower region or vice versa. Further, the liquid receiver can have at least one flow path for the liquid phase refrigerant between the fluid connection portions, and the flow path is at least partially passed through the second lower space.

  The central plane is a geometric plane, i.e. an imaginary plane, and preferably includes a longitudinal central axis. In a special case where the liquid receiver is configured in a cylindrical shape, the central surface of the liquid receiver is divided into two semi-cylinders each having a semicircular cross section, thus drawing the first upper space and the second lower space. Let's go.

  The flow path is a geometric space section of the receiver, through which the refrigerant substantially circulates in the liquid phase. In contrast, the gas phase component of the refrigerant flows through another flow path, and these flow paths are substantially passed through the first upper space. Therefore, separation of the gas phase and the liquid phase of the refrigerant appears due to the density, and substantially only the liquid phase of the refrigerant flows again from the receiver into the header pipe.

  In another preferred embodiment, the receiver has a separation device, the separation device has one through-hole in at least one cross-sectional area of the receiver, the through-hole being substantially of the receiver. Located in the lower space. This separation device can be, for example, a separation plate that contacts the inner wall of the liquid receiver in shape and has an open lower region. The functional mode of this separation device is explained below with reference to the figures.

  Preferably the separating element is made of the same material as the receiver. However, the present invention includes forming the separation element from another material such as an elastomer.

  In other embodiments, the receiver is offset laterally relative to the plane defined by the flow device. As mentioned above, the distribution device is a flat tube. Since a large number of such flat tubes are arranged substantially parallel to each other, one plane is defined by the vertical direction of the flat tubes and the direction in which different flow devices perpendicular to the flat tube are arranged.

  The liquid receiver, i.e. the longitudinal central axis of the liquid receiver, is offset laterally with respect to this plane, whereby the defined angle is 0-90 °, preferably 10-45 °, particularly preferably Is 20-30 °.

  In another preferred embodiment, the fluid in the receiver is forced to flow through the filtration device after leaving the drying device. The term “forced” is understood to mean that after flowing out of the drying device, the fluid cannot flow in a different path than in the filtration device.

  In another particularly preferred embodiment, the filtration device substantially completely surrounds the drying device. This means that the drying device is surrounded by a filtering device in each spatial direction.

  Particularly preferably, the hygroscopic desiccant is molecular sieve, calcium chloride, calcium oxide, potassium carbonate, copper sulfate, magnesium perchlorate, magnesium sulfate, sodium sulfate, barium sulfate, blue gel, silica gel, calcium hydride, magnesium oxide, oxidation It has at least one component selected from a group of components including aluminum, sodium / potassium alloy, montmorillonite, renewable desiccant, non-renewable desiccant, and the like.

  In other preferred embodiments, the header tube and / or receiver are implemented in a single piece in the longitudinal direction. By single member is understood that the header tube and / or the receiver are unitary in the vertical direction regardless of their inner and outer features at each end region. However, the header tube and / or the receiver are carried out in two or more parts in the longitudinal direction, i.e. with different pipe parts in the longitudinal direction irrespective of the shaping of the end of the header tube and / or the receiver, e.g. It is also possible to provide a large diameter tube into which a small diameter tube is inserted.

  Preferably, the header pipe is connected to the liquid receiver by a tack weld, and the tack weld can be implemented as a TIG weld or a laser weld. In this case, preferably the header tube and / or the liquid receiver have at least one protrusion on the side substantially abutting the liquid receiver and / or the header tube. In this case, the projections can be configured as edges, plates, profile strips, interposed discs, spacer discs or the like.

  Preferably, the header tube and / or the receiver can also have a groove for engaging the protrusion.

  In another preferred embodiment, the receiver has a lid on at least one end side. The lid can be coupled to the receiver in various ways, for example by screwing the lid into the receiver using a screw thread or by screwing it on the outside of the receiver. The lid may further include a sealing device that presses the inner wall of the receiver as it is pushed into the receiver. The lid can also be combined with the drying and / or filtering device in a single piece.

  In other preferred embodiments, the drying device and / or filtration device can be removed from the receiver after removal of the lid. The term “after removal of the lid” also includes that the drying device and / or the filtration device can be removed from the receiver together with the lid if the drying device and / or the filtration device are configured integrally with the lid. .

  In other preferred embodiments, the header tube and the receiver have substantially the same length. However, it is also possible for the header tube and the receiver to have different lengths, in particular the receiver is shorter than both header tubes.

  In another preferred embodiment, the filtering device and the drying device have at least one coupling element, in particular one sealing device, on their outer contour.

  This sealing device can be, for example, a seal made of an elastomer material supported on the inner wall of the receiver. Preferably, the inner wall of the receiver can also have a protrusion projecting inward, which supports the sealing device.

  The coupling element is particularly preferably frictionally and / or geometrically and / or materially joined to the inner wall of the receiver, in particular brazed. Other advantages of the present invention will become apparent from the following specification, taken in conjunction with the accompanying drawings.

  FIG. 1 shows a first embodiment of a refrigerant condensing device according to the present invention.

  Reference numeral 1 denotes a supply pipe for supplying a refrigerant to the apparatus. Reference numeral 2 denotes a refrigerant discharge pipe. Reference numeral 4a denotes a lower header pipe, and reference numeral 4b denotes an upper header pipe. A number of flow devices 6, 6 'are arranged between both header tubes 4a, 4b. Reference numeral 8 denotes a frame device for this apparatus. Reference numeral 10 denotes a liquid receiver that is disposed substantially parallel to the header tube.

  In this embodiment, the liquid receiver is arranged with two members. That is, the liquid receiver has a first component 10a and a second component 10b, and the second component 10b has a diameter larger than that of the first component 10a and can be fitted to the first component 10a. .

  The arrow indicates the flow direction of the refrigerant inside the apparatus.

  Cooling fins (not shown) can be arranged between the individual circulation devices. In FIG. 1, the liquid receiver is shifted laterally with respect to a plane defined by the flow devices 6, 6 'and the like. That is, the central perpendicular or central axis S of the receiver is outside the plane defined by the flow device. However, it is also conceivable that the liquid receiver is provided in this plane, that is, not shifted laterally.

  FIG. 2 is a sectional view showing details of the liquid receiver and header pipe for the refrigerant condensing device of FIG. 1 along the line DD. This illustration is made in a plan view so that the ends of the individual distribution devices 6, 6 ', etc. are also shown. In FIG. 2, each distribution device has a plurality of flow paths 6a and 6b through which a flow medium flows.

  A plurality of partition walls 12a to 12d are arranged inside the header pipe. The partition wall is provided so that the refrigerant cannot flow through the partition wall in the longitudinal direction 1 of the header pipe or flow along the distribution device. Reference numerals 14a and 14b denote fluid connection portions between the liquid receiver 10 and the upper header pipe 4b. A filtration device 17 is provided inside the liquid receiver 10. Inside the filtration device 17 is a drying device (not shown). The filtration device can be a woven fabric having a predetermined pore distribution containing a desiccant, as noted above.

  Reference numeral 18 denotes a sealing device that presses the inner wall of the receiver 10, in this case, the inner wall of the receiver component 10 b. This sealing means prevents refrigerant from flowing between the fluid connections 14a, 14b outside the filtration device. That is, it is thus ensured that substantially all of the refrigerant flows through the filter and does not flow by it.

  Next, the refrigerant flow in the condenser will be described with reference to FIGS.

  The refrigerant first flows into the apparatus as a gaseous fluid first through the supply pipe 1. Similar to the upper header tube 4b, the lower header tube also has a separating device, and these separating devices partition the lower header tube into a plurality of regions in an airtight and liquid tight manner.

  Starting from the supply pipe 1, the refrigerant reaches the region of the upper header pipe defined by the separating devices 12a, 12b via the lower header pipe and the flow device, and then flows downward again into the lower header pipe 4a. . From there, the refrigerant reaches the flow device 6 between the separators 12b, 12c, and flows upward again into the upper header pipe 4b.

  From there, the refrigerant flows into the liquid receiver 10 through the fluid connection 14a.

  Inside the liquid receiver, the refrigerant passes through the filtering device and the drying device, and flows into the liquid receiver region disposed on the right side of the sealing device 18. The gaseous component present in the case of the refrigerant reaches the upper region of the receiver 10, that is, the receiver region above the central plane M by the effects of gravity and density difference.

  On the other hand, the liquid component of the refrigerant substantially remains in a region below the central plane, and can flow down to the header pipe region between the separation devices 12c and 12d via the fluid connection portion 14.

  The central plane M, as noted above, is merely a geometric plane, not an actual device.

  From the region between the separators 12c, 12d, the refrigerant can finally flow down downwards into the header pipe 4a and from there via the discharge pipe 2.

  Another embodiment of the refrigerant condensing device according to the present invention is shown in FIG.

  Unlike the above embodiment, here the supply pipe 1 and the discharge pipe 2 are arranged on the top and the receiver is on the bottom.

  The receiver further has a separating device 15 as shown in FIG. 4, but this separating device does not fill the entire cross section of the receiver. This is shown in FIG. 5, which is a sectional view taken along line BB in FIG. The face piece 15a is not covered by the separating device 15, but thus implements a fluid connection between both parts of the receiver.

  FIG. 5 further shows that the liquid receiver 15 is displaced with respect to the header tube 20. In this case, the angle defined by the intersecting centerlines 21, 22 is according to a preferred embodiment 0-90 °, particularly preferably 10-45 °, in particular 20-35 °.

  As in the first embodiment, the refrigerant reaches the header pipe space defined by the separation devices 12b and 12c, and then reaches the liquid receiver through the fluid connection portion 14a. Since the liquid receiver of this embodiment is on the bottom, an emergency gas component of the refrigerant is substantially prevented from flowing to the left part of the liquid receiver provided with the fluid connection portion 14b by the separation device 15. However, the liquid component of the refrigerant can enter the partial region 15 through the hole region 15a of the separation device.

  The basic flow path of the fluid specifically indicated by the arrows A, B, and C starts from the first fluid connection portion 14a, passes through the hole region 15a via the filtration and drying device 17, and passes through the second fluid connection portion 14b. To the supercooling zone of the condenser. This supercooling region is arranged subsequent to the second fluid connection portion 14b.

1 shows a first embodiment of a refrigerant condensing device according to the present invention. FIG. 2 is a detailed view of a liquid receiver and a header pipe for the refrigerant condensing device of FIG. 1. 3 shows a second embodiment of the refrigerant condensing device. FIG. 4 is a detail view of the apparatus of FIG. 3. FIG. 5 is a cross-sectional view showing the device of FIG. 4 along the line BB of FIG. 4.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Supply pipe 2 Refrigerant discharge pipe 4a Lower header pipe 4b Upper header pipe 6, 6 'Distribution apparatus 10 Liquid receiver 10a 1st component 10b 2nd component 12a-12d Partition 14a, 14b Fluid connection part 15 Separator 15a Surface section 17 Filtration device 18 Sealing device 20 Header tube

Claims (18)

A refrigerant condensing device, in particular an automotive refrigerant condensing device,
-A number of distribution devices arranged substantially parallel to each other;
-Two header tubes arranged at each end of the flow device so that a fluid connection is established between the flow device and the header tube;
-At least one separating device for partitioning the header tube into at least one first region and at least one second region in a substantially air-tight and liquid-tight manner;
At least one filtration device arranged substantially parallel to at least one of the header tubes, having at least two fluid connections to the header tube and having at least partially hygroscopic desiccant; and And / or having at least one receiver containing the drying device,
A refrigerant condensing device, wherein a header pipe and a liquid receiver are arranged substantially horizontally.   The filtration device and the drying device are combined into one structural unit so that the fluid in the receiver is forced to flow through the filtration device before flowing into the drying device. The refrigerant condensing device described.   The receiver has a substantially horizontal central plane that divides the receiver into a first upper space and a second lower space of substantially the same size, and substantially between the fluid connections. The refrigerant condensing device according to any one of the preceding claims, wherein the refrigerant condensing device has at least one flow path for liquid refrigerant, and the flow path is at least partially passed through the second lower space.   The liquid receiver has a separation device, the separation device has one through hole in at least one cross-sectional area of the liquid receiver, and this through hole is arranged in this lower space of the liquid receiver. The refrigerant condensing device according to any one of the preceding claims, characterized in that:   The refrigerant condensing device according to any one of the preceding claims, wherein the liquid receiver is shifted laterally with respect to a plane defined by the flow device.   The refrigerant condensing device according to any one of the preceding claims, wherein the fluid in the liquid receiver forcibly flows through the filtration device after flowing out of the drying device.   A refrigerant condensing device according to any one of the preceding claims, characterized in that the filtering device substantially completely surrounds the drying device.   Molecular sieve, calcium chloride, calcium oxide, potassium carbonate, copper sulfate, magnesium perchlorate, magnesium sulfate, sodium sulfate, barium sulfate, blue gel, silica gel, calcium hydride, magnesium oxide, aluminum oxide, sodium / potassium alloy, montmorillonite The refrigerant according to any one of the preceding claims, characterized in that the hygroscopic desiccant has at least one component selected from the group of components comprising: a recyclable desiccant, a non-renewable desiccant, and the like. Condensing device.   A refrigerant condensing device according to any one of the preceding claims, characterized in that the header tube and / or the liquid receiver are implemented as a single member in the longitudinal direction.   The refrigerant condensing device according to any one of the preceding claims, characterized in that the header pipe and / or the liquid receiver are implemented by two members in the longitudinal direction.   Refrigerant condensation according to any one of the preceding claims, characterized in that the header tube is connected to the receiver by a tack weld, and the tack weld is implemented as a TIG weld or a laser weld. apparatus.   Refrigerant condensation according to any one of the preceding claims, characterized in that the header pipe and / or the liquid receiver have at least one protrusion on the side substantially abutting the liquid receiver and / or the header pipe. apparatus.   Refrigerant condensing device according to any one of the preceding claims, characterized in that the liquid receiver has a removable lid and / or bottom.   A refrigerant condensing device according to any one of the preceding claims, characterized in that the drying device and / or the filtration device can be removed from the receiver after removal of the lid and / or bottom.   The refrigerant condensing device according to claim 1, wherein the header pipe and the liquid receiver have substantially the same length.   A refrigerant condensing device, wherein the header pipe and the liquid receiver have different lengths, and in particular, the liquid receiver is shorter than the header pipe.   Refrigerant condensing device, characterized in that the structural unit of the filtering device and the drying device has at least one coupling element, in particular one sealing device, on its outer contour. A refrigerant condensing device, characterized in that the coupling element is frictionally and / or shaped and / or materially joined, in particular brazed, to the inner wall of the receiver.

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