KR101280618B1 - An Evaporator - Google Patents

Abstract

The present invention relates to an evaporator for uniformly distributing a refrigerant of an evaporator used in a vehicle cooling apparatus and smoothing the flow of the refrigerant.

The present invention provides an inlet pipe and an outlet pipe each having an outlet and an inlet communicating therewith; A distribution plate joined to a lower portion of the inlet pipe and an outlet pipe and formed with inlet and outlet holes respectively communicating with the inlet and outlet, and an inflow passage and an outlet passage joined to the distribution plate and communicated with the inlet and outlet holes. An upper header portion formed of an upper header joint, and a lower plate joined to a lower portion of the upper header joint and having a plurality of through holes respectively connected to the inflow passage and the outflow passage of the upper header joint; A tube inserted into each through hole of the lower plate to communicate with an inflow channel and an outflow channel of the upper header joint, respectively, and having pins placed thereon; A lower header joint having an upper plate formed at a lower portion of the tube and having a through hole into which the tube is inserted; Lower header portion consisting of; Characterized in that consists of.

Accordingly, the present invention can uniformly distribute the refrigerant to prevent the refrigerant from being oriented in one direction, thereby efficiently utilizing the contact area, thereby improving heat exchange performance, and preventing the refrigerant from losing flow, thereby moving the refrigerant. There is an effect that can smoothly.

Heat exchanger, evaporator, distribution plate, refrigerant distribution

Description

An Evaporator

1 is a cross-sectional view showing a conventional two-row evaporator.

Figure 2 is a perspective view showing a refrigerant movement path of a conventional two-row evaporator.

3 is a perspective view showing a two-row evaporator according to the present invention.

Figure 4 is an exploded perspective view showing a two-row evaporator according to the present invention.

5 is a cross-sectional view showing a two-row evaporator according to the present invention.

Figure 6 is a plan view showing an upper head portion according to the present invention.

Figure 7a, 7b is a perspective view showing another form of the upper head joint according to the present invention.

8A and 8B are perspective views illustrating a refrigerant movement path of a two-row evaporator according to the present invention.

DESCRIPTION OF REFERENCE NUMERALS

10: inlet pipe 11: outlet

20: outlet pipe 21: inlet

30: upper header portion 31: distribution plate

31a: inlet hole 31b: outlet hole

32: upper header joint 32a: inflow passage

32b: flow path 32c: insertion groove

33: bottom 33a: through hole

34: tube coupling plate 34a: through hole

40: tube 41: pin

50: lower header portion 51: top plate

51a: Through hole 52: Lower header joint

52a: communication groove 53: closing plate

54: tube coupling plate 60: baffle

The present invention relates to an evaporator. More specifically, the present invention relates to an evaporator for uniformly distributing a refrigerant of an evaporator used in a vehicle cooling apparatus and smoothing the flow of the refrigerant.

The evaporator used in the refrigeration cycle is a device that is compressed by the compressor to increase the temperature and pressure, and releases heat from the condenser to absorb the heat required when the refrigerant evaporates using the refrigerant expanded in the expansion valve.

As an example of a conventional two-row evaporator for vehicles has been disclosed in Japanese Patent Laid-Open No. 2005-30714, which is shown in FIG.

As shown, the upper tank 103, which is provided with the inlet pipe 101 and the outlet pipe 102, respectively, and is in communication with the upper end, and in the middle is a two-row tube 104 in communication with the upper tank 103 Inserted, the lower end is provided with a lower tank 105 in communication with the tube (104). In addition, the refrigerant distribution plate 106 is inserted into the inlet pipe 102.

2 shows a refrigerant movement path of the evaporator having the above configuration.

The refrigerant is introduced through the inlet pipe 101 and distributed by the refrigerant distribution plate 106, mixed in the upper tank 103 to be moved to the tube 104, and the moved refrigerant is mixed in the lower tank 105. It is moved to another tube 104 and mixed in the upper tank 103 to be discharged to the outlet pipe 102.

As such, the conventional evaporator allows the refrigerant distributed by the refrigerant distribution plate 106 to be mixed in the upper tank 103, moved through the tube 104 to the lower tank 105, and mixed again in the lower tank 105. Therefore, there is a problem in that the distribution of the refrigerant cannot be made uniform. The nonuniformity of the refrigerant distribution is a great cause of deterioration of the cooling performance of the evaporator.

In addition, since the refrigerant moved through the tube 104 is mixed in the lower tank 105 to be moved to another tube 104, there is a problem that the flow loss of the refrigerant is not smoothly discharged.

Accordingly, the present invention has been made to solve the problems of the prior art as described above, an object of the present invention is to make uniform distribution of the refrigerant in the evaporator to improve the heat exchange performance and smooth discharge of the refrigerant It is to provide an evaporator to make this possible.

The evaporator of the present invention for achieving the object as described above, the inlet pipe and the outlet pipe is provided with the outlet and the inlet communicated to the bottom, respectively; A distribution plate joined to a lower portion of the inlet pipe and an outlet pipe and formed with inlet and outlet holes respectively communicating with the inlet and outlet, and an inflow passage and an outlet passage joined to the distribution plate and communicated with the inlet and outlet holes. An upper header portion formed of an upper header joint, and a lower plate joined to a lower portion of the upper header joint and having a plurality of through holes respectively connected to the inflow passage and the outflow passage of the upper header joint; A tube inserted into each through hole of the lower plate to communicate with an inflow channel and an outflow channel of the upper header joint, respectively, and having pins placed thereon; A lower header joint having an upper plate formed at a lower portion of the tube and having a through hole into which the tube is inserted; Lower header portion consisting of; Characterized in that consists of.

In addition, the outlet and the inlet of the present invention is characterized in that located in the diagonal direction respectively.

In addition, the upper header joint of the present invention is characterized in that the insertion groove is formed is the tube is inserted.

In addition, the upper and lower header joint of the present invention is characterized in that a plurality of plates are formed by stacking.

In addition, the inlet hole and the outlet hole of the present invention is characterized in that its size increases as it proceeds in the refrigerant inlet and outlet direction.

In addition, the present invention is further provided between the upper plate 51 and the lower header joint 52 is provided with a tube coupling plate 54 formed with a plurality of through holes 54a so that the tube 40 can be inserted and coupled thereto. A lower end plate 53 supporting the lower header joint 52 is further provided below the lower header joint 52.

In addition, the lower plate of the upper header portion and the upper plate of the lower header portion of the present invention is characterized in that the "C" shape to accommodate the upper header joint and the lower header joint, respectively.

In addition, a baffle is further provided inside the inflow pipe or the outflow pipe, and the flow path at a position corresponding to the position where the baffle is provided is blocked in the upper header joint or the lower header joint.

In addition, the lower portion of the upper header joint of the present invention is characterized in that the tube coupling plate for supporting the header joint is further provided.

Hereinafter, the evaporator according to the present invention having the configuration as described above will be described in detail with reference to the accompanying drawings.

Figure 3 is a perspective view showing a two-row evaporator according to the present invention, Figure 4 is an exploded perspective view showing a two-row evaporator according to the present invention, Figure 5 is a cross-sectional view showing a two-row evaporator according to the present invention, Figure 6 7A and 7B are perspective views showing another embodiment of the upper head joint according to the present invention, and FIGS. 8A and 8B are perspective views showing the refrigerant moving path of the two-row evaporator according to the present invention. .

As shown, the inlet pipe 10 and the outlet pipe 20 provided with the outlet 11 and the inlet 21, respectively; Distribution plate 31 each having inlet hole 31a and outlet hole 31b formed thereon, upper header joint 32 having inlet flow path 32a and outlet flow path 32b, and a plurality of through holes 33a, respectively. An upper header portion 30 formed of a lower plate 33 formed thereon; A tube (40) communicating with the upper header joint (32) and having a pin placed thereon; A lower header portion composed of an upper plate 51 having a through hole 51a into which the tube 40 is inserted, and a lower header joint 52 which communicates with each other so as to be movable to a tube 40 positioned on the same line in a row ( 50); .

The inlet pipe 10 and the outlet pipe 20 are arranged side by side with each other, the refrigerant passage is in the opposite direction to each other.

The inflow pipe 10 is a refrigerant is introduced to one side, the introduced refrigerant is moved through the outlet 11 formed in the lower side of the other side of the inflow pipe (10).

The outflow pipe 20 allows the refrigerant to flow out to one side, and the outflowing refrigerant flows into the outflow pipe 20 through the inlet 21 formed at a lower portion of the outlet of the outflow pipe 20. Will be discharged. The discharged refrigerant is moved to the compressor to be compressed and moved to the condenser and expanded through an expansion valve to be introduced into the inlet pipe 10 of the evaporator.

The upper header portion 30 is composed of a distribution plate 31, the upper header joint 32 and the lower plate 33 is formed to be bonded, the tube 40 is coupled to the lower portion of the upper header portion 30 Will be. The upper header portion 30 distributes the refrigerant introduced into the inlet pipe 10 so as to be moved to the tube 40 positioned below the inlet pipe from the two rows of tubes 40, and the moved refrigerant has two rows. The tube 40 is moved to the tube 40 positioned below the outlet pipe to be discharged through the outlet pipe 20.

The distribution plate 31 of the upper header part 30 is joined to the lower portion of the inlet pipe 10 and the outlet pipe 20 and communicates with the inlet port 21 and the outlet port 11, respectively. And outlet holes 31b are formed, respectively. At this time, the outlet 11 and the inlet 21 are respectively positioned in the diagonal direction. In addition, the inflow hole (31a) and the outlet hole (31b), as shown in Figure 6, the size of the inflow pipe 10 and the outlet pipe 20 as the refrigerant flows in the inflow direction and the outflow direction It is desirable to increase. The reason for this is that the farther the refrigerant moves, the less the refrigerant flows. Therefore, the farther the refrigerant flows, the farther the refrigerant moves. This is because it cannot be made uniform. In addition, the amount of movement of the refrigerant decreases at a place near the outlet side of the outflow pipe 20, and the amount of movement of the refrigerant decreases at a place far from the outlet side of the outlet pipe 20. Accordingly, as the size of the inflow hole 31a and the outflow hole 31b increases as the inflow and outflow direction of the refrigerant flows in and out, the amount of refrigerant flowing in and out is close to the inflow and outflow areas. It is possible to evenly distribute the amount of movement of the refrigerant even in a distant place.

The upper header joint 32 of the upper header portion 30 is joined to the lower portion of the distribution plate 31 and the inflow passage communicating with the inlet hole 31a and the outlet hole 31b of the distribution plate 31 ( 32a) and the outflow channel 32b are provided, respectively. At this time, it is preferable that the upper header joint 32 has an insertion groove 32c into which the tube 40 is inserted. In addition, when the upper header joint 32 is thick, the capacity of the inflow passage 32a and the outlet passage 32b through which the refrigerant is moved can be increased, so that the capacity of the evaporator can be increased, but the processing is not easy. As shown in FIG. 7, it is preferable that a plurality of plates are stacked and formed to facilitate the processing of the inflow channel 32a and the outlet channel 32b and the processing of the insertion groove 32c.

A lower portion of the upper header joint 32 is preferably further provided with a tube coupling plate 34 for supporting the upper header joint 32. The tube coupling plate 34 has a plurality of through holes (34a) formed in two rows so that the tube 40 can be inserted and coupled. The tube coupling plate 34 serves to improve the coupling force to be coupled by inserting the tube 40.

The lower plate 33 of the upper header portion 30 is joined to the lower portion of the upper header joint 32 and a plurality of in communication with the inflow passage 32a and the outlet passage 32b of the upper header joint 32, respectively. The through holes 33a are formed in two rows. At this time, the through hole (33a) is formed in a direction perpendicular to the inlet flow path (32a) and the outlet flow path (32b) and has a long hole shape so that the tube 40 can be inserted. The lower plate 33 of the upper header portion 30 is preferably in the form of "c" to accommodate the upper header joint 32 and the lower header joint 52, respectively. In this case, the lower plate 33 of the upper header part 30 may receive and join the upper header joint 32 together with the distribution plate 31 of the upper header part 30.

The tube 40 is inserted into each through hole formed in the lower plate 33 of the upper header portion 30 to communicate with the inflow passage 32a and the outlet passage 32b of the upper header joint 32, respectively. A fin 41 is placed between each tube 40. The lower header portion 50 is coupled to the lower portion of the tube 40.

The lower header part 50 is composed of a distribution plate 51 and a lower header joint 52 to be joined to each other, and an upper portion of the lower header part 50 is coupled to the tube 40.

The upper plate 51 of the lower header portion is located under the tube 40 and the through holes 51a into which the tubes 40 are inserted are formed. The upper plate 51 of the lower header portion 50 is preferably in the form of "c" to accommodate the upper header joint 32 and the lower header joint 52, respectively.

The lower header joint 52 is positioned below the upper plate 51 and has a tube positioned on the same line so as to move from the tube 40 positioned on the same line in the row to the tube 40. Communication grooves 52a for communicating with each other are provided as many as the number of tubes 40.

As such, the lower header joint 52 communicates the tubes 40 inserted into the communication grooves 52a by the communication grooves 52a to each other so that the refrigerant passing through the tubes 40 communicates with each other. It can be moved immediately. Accordingly, since the refrigerant is not oriented in one direction or a flow loss does not occur as in the related art, smooth movement of the refrigerant may be possible. In addition, since the coolant uniformly distributed in the upper header part 30 is moved through the tube 40 and is moved to the upper header part 30 as it is, the cooling area can be efficiently used to increase the cooling efficiency.

A lower plate 53 supporting the lower header joint 52 is provided below the lower header joint 52.

In addition, the upper portion of the lower header joint 52 serves to improve the coupling force coupled by inserting the tube 40, which is the same role as the tube coupling plate 34 supporting the upper header joint 32 described above. It is preferable that the tube coupling plate 54 is provided. The tube coupling plate 54 is formed with a plurality of through holes (54a) in two rows so that the tube 40 can be inserted and coupled.

In addition, the evaporator of the present invention may further include a baffle 60 to form multiple flow paths. When the baffle 60 is provided as shown in FIG. 8B, the refrigerant flows into the inflow side section among the sections partitioned by the baffle 60 of the inflow pipe 10 and flows downward along the tube 40. do. At this time, the flow path of the portion corresponding to the position of the baffle 60 in the flow path of the upper header joint 32 should be closed as shown in FIG. 7B. The refrigerant flowing into the lower header portion 50 moves to the side row through the communication groove 52a, and then flows into the outlet pipe 20 of the upper header portion 30 along the tube 40. In the outflow pipe 20, the refrigerant flows in one direction because the refrigerant flows in one direction, and the refrigerant introduced into the lower header part 50 along the tube 40 is also in the communication groove ( 52a) it flows into the first row and flows along the tube 40 into the section behind the baffle 60 section of the inlet pipe 10, which eventually exits the evaporator. The evaporator shown in FIG. 8B has a quadruple flow path. The evaporator shown in FIG. 8A has only a dual flow path, but the baffle 60 can be used to form multiple flow paths as described above. Of course, not only the baffle 60 is provided as shown in FIG. 8B, but also the baffle 60 may be provided on the inlet pipe 10 and the outlet pipe 20, respectively, to form a six-channel flow path. In addition, if necessary, the flow path portion of the lower header joint 52 as well as the flow path portion of the upper header joint 32 corresponding to the position of the baffle 60 may be blocked. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. It goes without saying that various modifications can be made.

As described above, according to the present invention, by solving the problem that the refrigerant is not uniformly distributed in the middle row (second row) in the conventional evaporator and did not circulate smoothly, the cooling performance can be improved as compared to the conventional evaporator. It works. In addition, the structure according to the present invention has the effect of increasing the pressure resistance of the header tank itself, and thus additionally increases the life or stability of the evaporator itself. In addition, in the actual production of the product to which the structure according to the present invention is applied, it is easy to manufacture because it has a relatively simple structure, such as inserting the member inside the evaporator tank or integrally manufactured by extrusion molding method. There are many convenient manufacturing methods available.

Claims (9)

An inlet pipe 10 and an outlet pipe 20 provided with an outlet port 11 and an inlet port 21 communicating downwardly; and The distribution plate 31 is joined to the lower portion of the inlet pipe 10 and the outlet pipe 20 and has an inlet hole 31a and an outlet hole 31b communicating with the inlet 21 and the outlet 11, respectively. And an upper header joint 32 bonded to a lower portion of the distribution plate 31 and provided with a flow path communicating with the inlet hole 31a and the outlet hole 31b, respectively, and under the upper header joint 32. An upper header portion 30 formed of a lower plate 33 bonded to the upper header joint 32 and having a plurality of through holes 33a respectively communicating with the inflow passage 32a and the outlet passage 32b of the upper header joint 32; and A tube (40) inserted into each through hole (33a) of the lower plate (33) to communicate with the inflow passage (32a) and the outlet passage (32b) of the upper header joint (32) and the pin (41) is placed; And The upper plate 51 formed in the lower portion of the tube 40 and the through-hole 51a into which the tube 40 is inserted, respectively, and the tube positioned in the same line in the row below the upper plate 51 A lower header portion 50 consisting of a lower header joint 52 having communication grooves 52a communicating with each other so as to be movable; / RTI > The outlet 11 and the inlet 21 are located in the diagonal direction, respectively, the inlet hole (31a) and the outlet hole (31b) is characterized in that its size increases as it proceeds in the refrigerant inlet and outlet direction evaporator. delete The method of claim 1, The upper header joint (32) is an evaporator, characterized in that the insertion groove (32c) is formed is inserted into the tube (40). The method of claim 1, The upper and lower header joints (32, 52) is characterized in that formed by stacking a plurality of plates. delete The method of claim 1, Between the upper plate 51 and the lower header joint 52 is further provided with a tube coupling plate 54 formed with a plurality of through holes 54a so that the tube 40 can be inserted and coupled thereto. Evaporator, characterized in that the bottom of the lower header joint (52) is further provided with a closing plate (53) for supporting the lower header joint (52). The method according to any one of claims 1, 3, 4, 6, The lower plate 33 of the upper header portion 30 has both ends bent upwards, and the upper plate 51 of the lower header portion 50 has both ends bent downward so that the upper header joint 32 and the lower header joint ( 52) evaporator characterized in that it is of the form "c" to accommodate each one. The method of claim 7, wherein A baffle 60 is further provided in the inlet pipe 10 or the outlet pipe 20, and the upper header joint 32 or the lower header joint 52 corresponds to a position where the baffle 60 is provided. Evaporator characterized in that the flow path of the position is blocked. 9. The method of claim 8, Evaporator, characterized in that the lower portion of the upper header joint (32) is further provided with a tube coupling plate (34) for supporting the upper header joint (32).

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