JP5618368B2 - Heat exchanger and integrated air conditioner equipped with the same - Google Patents

Description

  The present invention relates to a side flow parallel flow heat exchanger and an integrated air conditioner equipped with the heat exchanger.

  A parallel flow type heat in which a plurality of flat tubes are arranged between a plurality of header pipes so that a plurality of refrigerant passages in the flat tubes communicate with the inside of the header pipe, and fins such as corrugated fins are arranged between the flat tubes. Exchangers are widely used in outdoor units of car air conditioners and building air conditioners.

  An example of a conventional side flow type parallel flow type heat exchanger is shown in FIG. The heat exchanger 1 includes two header pipes 2 and 3 and a plurality of flat tubes 4 arranged therebetween. In FIG. 6, the header pipes 2 and 3 extend in the vertical direction and are arranged in parallel in the horizontal direction at intervals, and the flat tubes 4 extend in the horizontal direction and are arranged at a predetermined pitch in the vertical direction. Needless to say, the parallel flow type heat exchanger 1 is installed at various angles in accordance with design requirements at the stage of actually mounting on equipment, and there are many cases where exact “vertical” and “horizontal” do not apply.

  The flat tube 4 is an elongated molded product obtained by extruding a metal, and a refrigerant passage 5 through which a refrigerant flows is formed. Since the flat tube 4 is disposed so that the extrusion direction, which is the longitudinal direction, is horizontal, the refrigerant flow direction of the refrigerant passage 5 is also horizontal. A plurality of refrigerant passages 5 having the same cross-sectional shape and the same cross-sectional area are arranged in the depth direction of FIG. 4, and therefore the vertical cross section of the flat tube 4 has a harmonica shape. Each refrigerant passage 5 communicates with the inside of the header pipes 2 and 3. Fins 6 are arranged between adjacent flat tubes 4. Corrugated fins are used as the fins 6, but plate fins may be used.

  The header pipes 2 and 3, the flat tubes 4, and the fins 6 are all made of a metal having good heat conductivity such as aluminum, the flat tubes 4 are brazed to the header pipes 2 and 3, and the fins 6 are brazed to the flat tubes 4. Or it is fixed by welding.

  In the heat exchanger 1 of FIG. 6, the refrigerant outlets 7 and 8 are provided only on the header pipe 3 side. Two partition plates 9a and 9c are provided in the header pipe 3 at intervals in the vertical direction. Inside the header pipe 2, the partition plates are located at a height intermediate between the partition plates 9a and 9c. 9b is provided.

  When the heat exchanger 1 is used as an evaporator, the refrigerant flows in from the lower refrigerant inlet / outlet port 7 as indicated by solid line arrows in FIG. The refrigerant entering from the refrigerant inlet / outlet 7 is blocked by the partition plate 9 a and travels toward the header pipe 2 via the flat tube 4. This refrigerant flow is represented by a left-pointing block arrow. The refrigerant that has entered the header pipe 2 is blocked by the partition plate 9 b and travels to the header pipe 3 via another flat tube 4. This refrigerant flow is represented by a right-pointing block arrow. The refrigerant that has entered the header pipe 3 is dammed up by the partition plate 9 c, and further travels toward the header pipe 2 via another flat tube 4. This refrigerant flow is represented by a left-pointing block arrow. The refrigerant that has entered the header pipe 2 is folded back and travels again to the header pipe 3 via another flat tube 4. This refrigerant flow is represented by a right-pointing block arrow. The refrigerant entering the header pipe 3 flows out from the refrigerant inlet / outlet 8. In this way, the refrigerant follows the zigzag path and flows from the bottom to the top. Although the case where the number of partition plates is 3 is shown here, this is only an example, and the number of partition plates and the number of times the resulting refrigerant flow may be folded may be set as desired. it can.

  When the heat exchanger 1 is used as a condenser, the refrigerant flow is reversed. That is, the refrigerant enters the header pipe 3 from the refrigerant inlet / outlet 8 as shown by a dotted arrow in FIG. 6, is dammed by the partition plate 9c and goes to the header pipe 2 via the flat tube 4, and is dammed by the partition plate 9b in the header pipe 2. It heads to the header pipe 3 via another flat tube 4, and the header pipe 3 is dammed by a partition plate 9 a, then goes to the header pipe 2 again via another flat tube 4, and is folded back by the header pipe 2 to make another flat It flows from the top to the bottom following the zigzag path in which it goes to the header pipe 3 again via the tube 4 and flows out from the refrigerant inlet / outlet 7 as indicated by the dotted line arrow.

  In the above description, when the heat exchanger 1 is used as an evaporator, the refrigerant flows from the bottom to the top. When the heat exchanger 1 is used as a condenser, the refrigerant flows from the top to the bottom. It is possible to set the refrigerant to flow in the opposite direction.

  A typical device equipped with a heat exchanger is an air conditioner, and there is one called an integrated air conditioner. This is used when a separate air conditioner consisting of an outdoor unit and an indoor unit cannot be installed. A condenser and an evaporator placed in a single housing are placed indoors, and the outdoor duct is connected through an exhaust duct. At the same time as the heat is discharged, the room air is circulated to adjust the temperature of the room air. Examples of the integrated air conditioner can be found in Patent Documents 1 and 2.

  In the integrated air conditioner described in Patent Document 1, a fin-and-tube heat exchanger in which a copper tube penetrates a large number of aluminum fins is used for both an evaporator and a condenser. The evaporator and the condenser are independent parts and are installed at remote locations. Exhaust heat from the condenser during cooling operation is performed outdoors by an exhaust duct having one end connected to a lower outlet provided on the back and the other end connected to a window or the like.

  In the integrated air conditioner described in Patent Document 2, the inside of the housing is partitioned by a partition plate into an upper cooling chamber and a lower exhaust heat chamber, an evaporator is disposed in the cooling chamber, and the exhaust heat chamber Is equipped with a condenser. An exhaust port and an exhaust port are formed in the exhaust heat chamber. One end of the exhaust duct is attached to the exhaust port, and one end of the intake duct is detachable from the intake port. The other end of the exhaust duct is attached to an opening such as a window. Like the exhaust duct, the other end of the intake duct can be attached to an opening such as a window, and both the exhaust duct and the intake duct can be used to supply and exhaust air using a double duct system.

  FIG. 7 shows an integrated air conditioner of the type described in Patent Document 2. The interior of the housing 11 of the air conditioner 10 is partitioned up and down by a horizontal partition plate 12, the cooling chamber 13 on the upper side, and the exhaust heat chamber 14 on the lower side. An evaporator 15 is disposed in the cooling chamber 13, and a condenser 16 and a compressor 17 are disposed in the exhaust heat chamber 14. The evaporator 15, the condenser 16, and the compressor 17 are added with a decompression and expansion device (not shown) and a four-way valve to constitute a heat pump cycle as a refrigeration cycle. In addition, an air blower (not shown) is disposed in the cooling chamber 13, and an indoor circulation air passage 18 indicated by a broken line arrow is formed. The exhaust heat chamber 14 is also provided with a blower (not shown), and a heat radiating air passage 19 indicated by a broken line arrow is formed. The heat radiating air passage 19 is for sending the air that has passed through the condenser 16 into an exhaust duct (not shown). Both the evaporator 15 and the condenser 16 are fin-and-tube heat exchangers.

JP 2005-274077 A JP 2010-54111 A

  In both the integrated air conditioner described in Patent Document 1 and the integrated air conditioner described in Patent Document 2, separate heat exchangers are used for the evaporator and the condenser, which complicates the configuration. This was a factor that hindered the reduction in size and weight.

  The present invention has been made in view of the above points, and aims to provide a side flow parallel flow heat exchanger suitable for an integrated air conditioner, and an integrated air conditioner equipped with the same. To do.

According to a preferred embodiment of the present invention, a plurality of header pipes arranged in parallel at intervals, and a plurality of refrigerant pipes arranged between the plurality of header pipes are provided inside the header pipes. In the parallel flow type heat exchanger of the side flow system provided with the communicated flat tubes and the fins disposed between the flat tubes, the plurality of flat tubes are positioned at the upper group and the lower portion. The upper group flat tube and a part of the header pipe corresponding thereto constitute an upper heat exchanging portion, and the lower group flat tube and a part of the header pipe corresponding thereto are the lower part. constitutes a heat exchanging portion, thermal isolation portion is formed between the upper heat exchanger and the lower heat exchange section, the thermal separation unit consists of the space which the fin is not provided

  According to a preferred embodiment of the present invention, in the heat exchanger configured as described above, one of the upper heat exchange part and the lower heat exchange part functions as an evaporator, and the other functions as a condenser.

  According to a preferred embodiment of the present invention, in the heat exchanger configured as described above, on the side functioning as a condenser of the upper heat exchange part and the lower heat exchange part, the refrigerant is changed from an upper flat tube to a lower flat tube. Flowing into.

  According to a preferred embodiment of the present invention, in the heat exchanger configured as described above, a heat insulating partition plate formed in the header pipe serves as one blade for forming the thermal separation portion.

  According to a preferred embodiment of the present invention, the heat exchanger configured as described above is mounted on an integrated air conditioner, and the upper heat exchanging portion is disposed in an indoor circulation air passage in a housing of the integrated air conditioner. The lower heat exchanger was disposed in a heat radiating air passage in the casing.

  According to a preferred embodiment of the present invention, in the integrated air conditioner configured as described above, the upper heat exchanger functions as an evaporator and the lower heat exchange unit functions as a condenser.

According to the present invention, the flat tubes arranged between the same header pipes are divided into an upper group and a lower group, and the upper group of flat tubes and a part of the header pipe corresponding thereto constitute an upper heat exchange part, Since the lower heat exchanging portion is constituted by the flat tube and a part of the header pipe corresponding to the flat tube, the heat exchanger in the form of a combination of the evaporator and the condenser can be made small and light. An integrated air conditioner equipped with this heat exchanger can also be reduced in size and weight. Furthermore, since the thermal separation part which consists of the space where the fin is not provided is provided between the upper heat exchange part and the lower heat exchange part, each heat of the upper heat exchange part and the lower heat exchange part is the other The upper heat exchanging part can sufficiently function as an evaporator, and the lower heat exchanging part can sufficiently function as a condenser.

It is a vertical sectional view showing a schematic structure of a side flow type parallel flow heat exchanger according to the first embodiment of the present invention. It is a side view which shows schematic structure of the integrated air conditioner carrying the heat exchanger which concerns on this invention. It is a vertical sectional view showing a schematic structure of a side flow type parallel flow type heat exchanger according to a second embodiment of the present invention. It is a vertical sectional view showing a schematic structure of a side flow type parallel flow heat exchanger according to a third embodiment of the present invention. It is a vertical sectional view showing a schematic structure of a side flow type parallel flow type heat exchanger according to a fourth embodiment of the present invention. It is a vertical sectional view showing a schematic structure of a conventional side flow type parallel flow type heat exchanger. It is a side view which shows schematic structure of the conventional integrated air conditioner.

  Hereinafter, the structure of the side flow type parallel flow heat exchanger according to the first embodiment of the present invention will be described with reference to FIG.

  The parallel flow heat exchanger 20 has basically the same structure as the conventional structure shown in FIG. That is, a plurality of flat tubes 23 extending in the horizontal direction are arranged between the two header pipes 21 and 22 extending in the vertical direction. “Vertical” and “horizontal” are used in the same meaning as used in the description of the conventional structure.

  The flat tube 23, the refrigerant passage 24 therein, and the fin 25 are configured and fixed in the same manner as the flat tube 4, the refrigerant passage 5, and the fin 6 of the conventional structure. A combination of the fins 25 and the side plates 26 is arranged on the flat surface facing the outside of the flat tube 23 located on the outermost side among the flat tubes 23 in which a plurality of tubes are arranged in a vertical row.

  The plurality of flat tubes 23 are divided into an upper group 27 located at the upper part and a lower group 28 located at the lower part. A space 29 is provided between the upper group 27 and the lower group 28. The space 29 functions as a thermal separation unit HI that prevents the heat of the upper group 27 and the lower group 28 from affecting the other. Inside the header pipes 21 and 22, partition plates 30 and 31 are provided at positions between the upper group 27 and the lower group 28, whereby the upper group 27 and the lower group 28 are completely separated.

  Part of the header pipes 21 and 22 above the partition plates 30 and 31 and the flat tubes 23 belonging to the upper group 27 constitute an upper heat exchange unit 40. Part of the header pipes 21 and 22 below the partition plates 30 and 31 and the flat tubes 23 belonging to the lower group 28 constitute a lower heat exchange unit 41.

  In the upper heat exchanging unit 40, an upper refrigerant inlet / outlet 32 and a lower refrigerant inlet / outlet 33 are formed in the header pipe 22. Inside the header pipe 22, a partition plate 34 is provided at an intermediate height between the upper refrigerant inlet / outlet 32 and the lower refrigerant inlet / outlet 33.

  In the upper heat exchanging unit 40, the number of the flat tubes 23 positioned above the partition plate 34 and the number of the flat tubes 23 positioned below the partition plate 34 are set to the same number. However, in consideration of pressure loss during evaporation, the number of flat tubes 23 may be increased toward the rear of the flow path during cooling.

  In the lower heat exchange unit 41, an upper refrigerant inlet / outlet 35 and a lower refrigerant inlet / outlet 36 are formed in the header pipe 22. Inside the header pipe 22, partition plates 37 and 38 are provided at positions between the upper refrigerant inlet / outlet 35 and the lower refrigerant inlet / outlet 36. A partition plate 39 is provided in the header pipe 21 at a height between the partition plates 37 and 38.

  In the lower heat exchanging section 41, the number of the flat tubes 23 positioned below the partition plate 38 is equal to the number of the flat tubes 23 positioned at the height between the partition plate 38 and the partition plate 39. The number of the flat tubes 23 positioned at the height between the plates 37 is smaller, and the number of the flat tubes 23 positioned above the flat tubes 37 is further smaller.

  The lower refrigerant inlet / outlet port 33 of the upper heat exchange unit 40 and the upper refrigerant inlet / outlet port 35 of the lower heat exchange unit 41 are connected by a refrigerant pipe 42. The refrigerant pipe 42 is provided with a decompression / expansion device 43.

  During the cooling operation, the upper heat exchange unit 40 functions as an evaporator, and the lower heat exchange unit 41 functions as a condenser. That is, the high-temperature and high-pressure refrigerant discharged from the compressor (not shown) enters the lower heat exchange unit 41 through the lower refrigerant inlet / outlet 36. The refrigerant that has entered the lower heat exchanging portion 41 travels toward the header pipe 21 through the flat tube 23 positioned below the partition plate 38. The refrigerant that has entered the header pipe 21 is turned back, passes through the flat tube 23 between the partition plate 38 and the partition plate 39, and travels toward the header pipe 22. The refrigerant that has entered the header pipe 22 is turned back to the header pipe 21 through the flat tube 23 between the partition plate 39 and the partition plate 37. The refrigerant that has entered the header pipe 21 turns back again, passes through the flat tube 23 above the partition plate 37, travels to the header pipe 22, and flows out from the upper refrigerant inlet / outlet 35.

  The high-temperature and high-pressure refrigerant that has flowed into the lower heat exchanging portion 41 from the lower refrigerant inlet / outlet 36 radiates heat to the air passing through the lower heat exchanging portion 41 in the process of flowing in a zigzag manner from the bottom to the upper portion of the lower heat exchanging portion 41. Condenses. The refrigerant that has exited the upper refrigerant inlet / outlet 35 of the lower heat exchange unit 41 passes through the decompression / expansion device 43 and then enters the upper heat exchange unit 40 through the lower refrigerant inlet / outlet 33.

  The refrigerant that has entered the upper heat exchanging portion 40 from the lower refrigerant inlet / outlet port 33 goes to the header pipe 21 through the flat tube 23 positioned below the partition plate 34. The refrigerant that has entered the header pipe 21 is turned back and travels toward the header pipe 22 through the flat tube 23 positioned above the partition plate 34. The refrigerant that has entered the header pipe 22 flows out from the upper refrigerant inlet / outlet 32. In this way, the refrigerant that flows back inside the upper heat exchange unit 40 expands in the process, and takes heat from the air passing through the upper heat exchange unit 40. Thereafter, the refrigerant exits from the upper refrigerant inlet / outlet 32 and returns to the compressor (not shown). Thus, in the upper heat exchanging unit 40 that functions as an evaporator, the refrigerant flows from the lower flat tube 23 to the upper flat tube 23. On the contrary, in the upper heat exchanger 40 functioning as an evaporator, the refrigerant may flow from the upper flat tube 23 to the lower flat tube 23.

  Since the thermal separation unit HI is provided between the upper heat exchange unit 40 and the lower heat exchange unit 41, the heat of the upper heat exchange unit 40 and the lower heat exchange unit 41 may affect the other. Therefore, the upper heat exchanging unit 40 can sufficiently function as an evaporator, and the lower heat exchanging unit 41 can sufficiently function as a condenser.

  During heating operation, a four-way valve (not shown) is switched, and the refrigerant flow is reversed from that during cooling operation. That is, the high-temperature and high-pressure refrigerant discharged from the compressor (not shown) enters the upper heat exchange unit 40 from the upper refrigerant inlet / outlet 32, dissipates heat to the air passing through the upper heat exchange unit 40, and condenses. The refrigerant that has exited the upper heat exchange section 40 from the lower refrigerant inlet / outlet 33 passes through the decompression / expansion device 43 and then enters the lower heat exchange section 41 through the upper refrigerant inlet / outlet 35. The refrigerant that has entered the lower heat exchanging section 41 expands, absorbs heat from the air passing through the lower heat exchanging section 41, and then exits the lower refrigerant inlet / outlet 36 and returns to the compressor (not shown).

  The side flow type parallel flow heat exchanger 20 forms an upper heat exchanging portion 40 and a lower heat exchanging portion 41 so as to share the header pipes 21 and 22, and one of them is used as an evaporator and the other as a condenser. Therefore, compared with the case where separate side flow type parallel flow heat exchangers are provided for the evaporator and the condenser, a compact configuration can be achieved.

  FIG. 2 shows a state in which the parallel flow heat exchanger 20 is mounted on an integrated air conditioner. The integrated air conditioner 10 shown in FIG. 2 basically follows the structure of the integrated air conditioner 10 shown in FIG. Components that are the same as those in FIG. 5 are given the same reference numerals used in FIG.

  In the parallel flow type heat exchanger 20 attached in the housing 11, the upper heat exchanging part 40 is arranged in the indoor circulation air passage 18 and the lower heat exchanging part 41 is arranged in the radiating air passage 19.

  Since the parallel flow heat exchanger 20 having a compact configuration is mounted, the integrated air conditioner 10 itself can be reduced in size and weight. In addition, the installation work becomes easier and the working time is shortened as compared with the case where the evaporator and the condenser are separately installed.

  During the cooling operation, moisture in the air is condensed on the outer surface of the upper heat exchange unit 40 functioning as an evaporator, and condensed water is generated. Condensed water drops or flows down by gravity, and wets the lower heat exchange unit 41 functioning as a condenser. Thereby, the condensation effect of the lower heat exchange part 41 is further enhanced.

A second embodiment of the parallel flow heat exchanger 20 is shown in FIG. The second embodiment is different from the first embodiment in that the partition plates 30 and 31 inside the header pipes 21 and 22 are replaced with heat insulation partition plates 30HI and 31HI. The heat insulating partition plates 30HI and 31HI play a part in the formation of the thermal separation portion HI, thereby further ensuring the thermal separation.

  In FIG. 3, the heat insulating partition plates 30 </ b> HI and 31 </ b> HI are formed by arranging two partition plates so that a space is generated between them. Since the heat insulating partition plates 30HI and 31HI are made of aluminum, heat transfer is likely to occur with a single plate, but sufficient heat insulation can be provided by arranging the two plates so that a space is generated between them. . The space between the two plates may enclose some gas or may be in a vacuum state.

  The heat insulating partition plates 30HI and 31HI can be formed by methods other than those described above. For example, the heat insulating partition plates 30HI and 31HI may be formed by increasing the thickness of the plate or changing the material of the plate to a heat insulating material.

  A third embodiment of the parallel flow heat exchanger 20 is shown in FIG. In the third embodiment, the lower refrigerant inlet / outlet 36 of the lower heat exchange unit 41 is connected to the lower refrigerant inlet / outlet 33 of the upper heat exchange unit 40 through the refrigerant pipe 42.

  In the lower heat exchanging section 41, the number of the flat tubes 23 positioned above the partition plate 37 is equal to the number of the flat tubes 23 positioned at the height between the partition plate 37 and the partition plate 39. The number of the flat tubes 23 located at the height between the plates 38 is smaller than that, and the number of the flat tubes 23 located below the flat tubes 38 is smaller.

  During the cooling operation, high-temperature and high-pressure refrigerant discharged from a compressor (not shown) enters the lower heat exchange unit 41 through the upper refrigerant inlet / outlet 35. The refrigerant that has entered the lower heat exchanging portion 41 travels toward the header pipe 21 through the flat tube 23 positioned above the partition plate 37. The refrigerant that has entered the header pipe 21 is turned back, passes through the flat tube 23 between the partition plate 37 and the partition plate 39, and travels toward the header pipe 22. The refrigerant that has entered the header pipe 22 is turned back again and travels toward the header pipe 21 through the flat tube 23 between the partition plate 39 and the partition plate 38. The refrigerant that has entered the header pipe 21 turns back again, passes through the flat tube 23 below the partition plate 38, travels to the header pipe 22, and flows out from the lower refrigerant inlet / outlet 36.

  The high-temperature and high-pressure refrigerant that has flowed into the lower heat exchanging portion 41 from the upper refrigerant inlet / outlet 35 radiates heat to the air passing through the lower heat exchanging portion 41 in the process of flowing in a zigzag manner from the top to the bottom inside the lower heat exchanging portion 41. Condenses. The refrigerant that has exited the lower refrigerant inlet / outlet 36 of the lower heat exchange unit 41 passes through the decompression / expansion device 43 and then enters the upper heat exchange unit 40 through the lower refrigerant inlet / outlet 33. The refrigerant that has entered the upper heat exchange unit 40 expands and takes heat from the air passing through the upper heat exchange unit 40. Thereafter, the refrigerant exits from the upper refrigerant inlet / outlet 32 and returns to the compressor (not shown).

  In the lower heat exchange section 41 that functions as a condenser, the refrigerant flows from the upper flat tube 23 to the lower flat tube 23. The movement from top to bottom is a natural movement for the liquid refrigerant, and heat can be exchanged efficiently.

  A fourth embodiment of the parallel flow type heat exchanger 20 is shown in FIG. In the fourth embodiment, the lower refrigerant inlet / outlet 36 of the lower heat exchanging part 41 is connected to the upper refrigerant inlet / outlet 32 of the upper heat exchanging part 40 through the refrigerant pipe 42.

  During the cooling operation, the refrigerant that has entered the upper heat exchange unit 40 from the upper refrigerant inlet / outlet 32 expands while flowing from the upper flat tube 23 to the lower flat tube 23, and generates heat from the air passing through the upper heat exchange unit 40. Take away. Thereafter, the refrigerant exits from the lower refrigerant inlet / outlet 33 and returns to the compressor (not shown).

  Also in the third embodiment and the fourth embodiment, the thermal separation can be further ensured by replacing the partition plates 30 and 31 with the heat insulating partition plates 30HI and 31HI.

  Although the embodiments of the present invention have been described above, the scope of the present invention is not limited to these embodiments, and various modifications can be made without departing from the spirit of the invention.

  INDUSTRIAL APPLICABILITY The present invention can be used for a side flow type parallel flow heat exchanger and an integrated air conditioner equipped with the heat exchanger.

DESCRIPTION OF SYMBOLS 10 Integrated air conditioner 11 Case 12 Partition plate 13 Cooling room 14 Heat exhaust room 17 Compressor 18 Indoor circulation air path 19 Radiation air path 20 Parallel flow type heat exchanger 21, 22 Header pipe 23 Flat tube 24 Refrigerant path 25 Fin 27 Upper group 28 Lower group 30, 31 Partition plate 30HI, 31HI Thermal insulation partition plate 32, 35 Upper refrigerant inlet / outlet 33, 36 Lower refrigerant inlet / outlet 40 Upper heat exchange part 41 Lower heat exchange part HI Thermal separation part

Claims (6)

A plurality of header pipes arranged in parallel at intervals, a plurality of flat tubes arranged between the plurality of header pipes and having refrigerant passages provided therein communicated with the inside of the header pipes, and the flat tubes In the parallel flow type heat exchanger of the side flow method provided with fins arranged between each other,
The plurality of flat tubes are divided into an upper group located at an upper portion and a lower group located at a lower portion, and the flat tubes of the upper group and a part of the header pipe corresponding thereto constitute an upper heat exchanging portion, A group of flat tubes and a part of the header pipe corresponding thereto constitute a lower heat exchange part ,
A thermal separation part is formed between the upper heat exchange part and the lower heat exchange part,
The heat exchanger is a heat exchanger characterized in that the thermal separation unit is a space where the fins are not provided .   The heat exchanger according to claim 1, wherein one of the upper heat exchange part and the lower heat exchange part functions as an evaporator, and the other functions as a condenser.   The heat exchanger according to claim 2, wherein the refrigerant flows from the upper flat tube to the lower flat tube on the side of the upper heat exchange unit and the lower heat exchange unit that functions as a condenser. The heat exchanger according to any one of claims 1 to 3 , wherein a heat insulating partition plate formed in the header pipe serves as one blade of the thermal separation section . The heat exchanger according to any one of claims 1 to 4 is mounted, the upper heat exchanging portion is disposed in an indoor circulation air passage in a housing of the integrated air conditioner, and the lower heat exchanger is An integrated air conditioner arranged in a heat radiating air passage in the housing . 6. The integrated air conditioner according to claim 5, wherein the upper heat exchanger functions as an evaporator and the lower heat exchanger functions as a condenser .

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