JP5331182B2 - Equipment with side flow parallel flow heat exchanger - Google Patents

Description

  The present invention relates to a device including a side flow parallel flow 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.

  Patent Document 1 describes a side flow type parallel flow heat exchanger including two vertical header pipes and a plurality of horizontal flat tubes connecting the two header pipes. In this heat exchanger, corrugated fins are arranged between the flat tubes. Corrugated fins are also attached to the lower surface of the lowest flat tube, and side plates are attached to the lower surface of the corrugated fins.

  FIG. 22 shows a lower end portion of a parallel flow type heat exchanger H having the same structure as the parallel flow type heat exchanger described in Patent Document 1. The flat tube T appearing there is the lowest flat tube, the lowermost corrugated fin C is fixed to the lower surface, and the side plate S is fixed to the lower surface.

  In the parallel flow type heat exchanger H configured as described above, the side plate S is not directly placed on the base of the device on which it is mounted. A gap is generated between the base and the side plate S. If the gap is left, an air flow path that does not pass through the heat exchanger H is created. Therefore, it is necessary to close the gap by some means.

  A block-shaped foamed resin F used as a heat insulating material has been widely used as means for closing the gap. Since the foamed resin F is inexpensive and can absorb some dimensional errors, it is suitable for the purpose of closing the gap.

  When the parallel flow type heat exchanger H is used as an evaporator, condensed water is generated on the surface. When the temperature is low, the condensed water turns into frost on the surface of the heat exchanger. Frost can travel to ice. In the present specification, the term “condensed water” is used to include water in which such frost and ice are melted, so-called defrosted water.

The condensed water is transferred from the side plate S to the block-shaped foamed resin F. However, if the foamed resin F has a block shape, when it is combined with the single side plate S, the condensed water generated near the center of the corrugated fin C is difficult to be discharged.

  Patent Document 2 describes a configuration in which a gap between a side flow type parallel flow heat exchanger and a base of a device on which the side flow type heat exchanger is mounted is closed with something other than foamed resin. That is, a spacer is provided on the upper surface of the bottom plate portion of the air conditioning duct, and the lower side plate of the parallel flow heat exchanger is placed on the top surface of the spacer.

  In the parallel flow type heat exchanger, when condensed water accumulates on the surface of the flat tube or the fin, the area of the air flow passage is narrowed by water, and the heat exchange performance is deteriorated. For this reason, in the parallel flow type heat exchanger, it is necessary to drain quickly so that the generated condensed water does not stay inside. In this regard, the device described in Patent Document 2 has no special device.

JP 2010-249388 A JP-A-61-223465

  The present invention relates to a side flow type parallel flow heat exchanger that can close a gap between a side flow type parallel flow heat exchanger and a base of a device in which the side flow type heat exchanger is mounted, and promote drainage of condensed water. It aims at providing the apparatus provided with.

  An apparatus including a side flow parallel flow heat exchanger according to the present invention includes a plurality of header pipes arranged in parallel at intervals and a plurality of header pipes arranged between the plurality of header pipes. A flat tube in which the refrigerant passage communicated with the inside of the header pipe, a plurality of fins attached to the flat surface of the plurality of flat tubes, and an outermost fin located among the plurality of fins. Side flow type parallel flow heat exchanger with a side plate to be mounted is mounted, and through holes or notches for drainage are formed in the side plate located at the bottom of the heat exchanger, and the heat exchanger is installed A drainage guide having an upper end approaching the side plate is disposed between the base and the side plate, and the drainage guide is disposed at an upper portion thereof. It has one convex portion Kutomo, the convex portion is close to or in contact with the through hole or notch.

  In the apparatus including the side flow type parallel flow heat exchanger having the above-described configuration, it is preferable that the through hole or the notch has a width that covers a plurality of pitches between the fins.

  In the apparatus including the side flow type parallel flow heat exchanger having the above-described configuration, the drainage guide has a shape including two side walls provided at a predetermined distance and an upper wall extending between the side walls. It is preferable to provide.

  In the apparatus including the side flow type parallel flow heat exchanger having the above-described configuration, the drainage guide may include a drainage groove at the top, and the upper part of the side wall of the drainage groove may be close to or in contact with the through hole or the notch. preferable.

  In the apparatus including the side flow type parallel flow heat exchanger having the above-described configuration, the drainage guide may include a ridge line portion or a rib at the top, and the ridge line portion or the rib may approach or contact the through hole or the notch. preferable.

  In the apparatus including the side flow type parallel flow heat exchanger having the above-described configuration, it is preferable that a drainage hole is formed in the drainage guide at a position off the ridge line portion or the rib.

  In a device including the side flow type parallel flow heat exchanger having the above-described configuration, it is preferable that a heat generating portion is disposed inside the drainage guide.

  In the apparatus provided with the side flow type parallel flow heat exchanger having the above-described configuration, the drainage guide is formed with a rib that is close to or in contact with an end of the fin in the air flow direction above the side plate. Preferably it is.

  According to the present invention, the condensed water is quickly transmitted to the drainage guide from the through hole or notch formed in the side plate located at the lower part of the heat exchanger, and drained via the drainage guide.

It is a schematic block diagram of the parallel flow type heat exchanger of a side flow system. It is a fragmentary sectional view which shows the combination of the parallel flow type heat exchanger and drainage guide which comprise 1st Embodiment of this invention. It is a partial top view of the side plate of the parallel flow type heat exchanger which concerns on 1st Embodiment. It is a fragmentary sectional view along the longitudinal direction of the drainage guide concerning a 1st embodiment. It is a perspective view which shows the condition which combined the drainage guide with the parallel flow type heat exchanger of a side flow system. It is a perspective view of the drainage guide which comprises 2nd Embodiment of this invention. It is a fragmentary sectional view showing the combination of the parallel flow type heat exchanger and drainage guide concerning a 2nd embodiment. It is a fragmentary sectional view along the longitudinal direction of the drainage guide concerning a 2nd embodiment. It is a fragmentary sectional view which shows the combination of the parallel flow type heat exchanger and drainage guide which comprise 3rd Embodiment of this invention. It is a fragmentary sectional view which shows the combination of the parallel flow type heat exchanger and drainage guide which comprise 4th Embodiment of this invention. It is a fragmentary sectional view which shows the combination of the parallel flow type heat exchanger and drainage guide which comprise 5th Embodiment of this invention. It is a perspective view of the drainage guide which comprises 6th Embodiment of this invention. It is a top view of the drainage guide concerning a 6th embodiment. It is a perspective view of the drainage guide which comprises 7th Embodiment of this invention. It is a perspective view showing the situation where the drainage guide concerning a 7th embodiment was combined with the side plate. It is a perspective view of the drainage guide which comprises 8th Embodiment of this invention. It is a partial enlarged top view of the drainage guide concerning an 8th embodiment. It is a perspective view of the drainage guide which comprises 9th Embodiment of this invention. It is a fragmentary sectional view showing the situation where the drainage guide concerning a 9th embodiment was combined with the parallel flow type heat exchanger. It is a schematic block diagram of the air conditioner carrying the parallel flow type heat exchanger which concerns on this invention, and shows the state at the time of heating operation. It is a schematic block diagram of the air conditioner carrying the parallel flow type heat exchanger which concerns on this invention, and shows the state at the time of air_conditionaing | cooling operation. It is a fragmentary sectional view explaining the conventional structure which plugs up the crevice which arises between a parallel flow type heat exchanger of a side flow method, and a device base.

  A basic structure of a side flow type parallel flow heat exchanger is shown in FIG. In FIG. 1, the upper side of the paper is the upper side of the heat exchanger, and the lower side of the paper is the lower side of the heat exchanger. The parallel flow heat exchanger 1 includes two vertical header pipes 2 and 3 and a plurality of horizontal flat tubes 4 arranged therebetween. The header pipes 2 and 3 are arranged in parallel in the horizontal direction at intervals, and the flat tubes 4 are arranged at a predetermined pitch in the vertical direction. Since the heat exchanger 1 is installed at various angles according to design requirements at the stage of actually mounting on equipment, the “vertical direction” and “horizontal direction” in this specification should not be strictly interpreted. It should be understood as a mere measure of direction.

  The flat tube 4 is an elongated molded product obtained by extruding a metal, and as shown in FIG. 2, 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 4 having the same cross-sectional shape and the same cross-sectional area are arranged in the left-right direction in FIG. 2, so that 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 attached to the flat surface of the flat tube 4. Here, corrugated fins are used as the fins 6, but plate fins may be used. Of the fins 6 arranged vertically, side plates 7T and 7B are arranged outside the uppermost and lowermost fins.

  The header pipes 2 and 3, the flat tubes 4, the fins 6, and the side plates 7 </ b> T and 7 </ b> B are all made of a metal having good heat conductivity such as aluminum. The flat tubes 4 are the flat tubes 4 with respect to the header pipes 2 and 3. On the other hand, the side plates 7T and 7B are fixed to the fins 6 by brazing or welding, respectively.

  The inside of the header pipe 2 is partitioned into three sections S1, S2, and S3 by two partition portions P1 and P2. The partition parts P1 and P2 divide the plurality of flat tubes 4 into a plurality of flat tube groups. A flat tube group consisting of four of the total 24 flat tubes 4 is connected to the section S1, a flat tube group consisting of 15 flat tubes 4 is connected to the section S2, and five flat tubes groups are connected to the section S3. A flat tube group consisting of the flat tubes 4 is connected.

  The inside of the header pipe 3 is partitioned into two sections S4 and S5 by one partition part P3. The partition part P3 divides the plurality of flat tubes 4 into a plurality of flat tube groups. A flat tube group consisting of 12 out of a total of 24 flat tubes 4 is connected to the section S4, and a flat tube group consisting of 12 flat tubes 4 is also connected to the section S5.

  The total number of the flat tubes 4 described above, the number of partition portions inside each header pipe and the number of partitions partitioned thereby, and the number of flat tubes 4 for each flat tube group divided by the partition portions are merely examples. Yes, it does not limit the invention.

  A refrigerant inlet / outlet pipe 8 is connected to the section S1. A refrigerant inlet / outlet pipe 9 is connected to the section S3.

  The function of the heat exchanger 1 is as follows. When the heat exchanger 1 is used as a condenser, the refrigerant is supplied to the section S1 through the refrigerant inlet / outlet pipe 8. The refrigerant that has entered the compartment S1 travels through the four flat tubes 4 connecting the compartment S1 and the compartment S4 to the compartment S4. The flat tube group formed by the four flat tubes 4 constitutes the refrigerant path A. The refrigerant path A is symbolized by a block arrow. Other refrigerant paths are also symbolized by block arrows.

  The refrigerant that has entered the compartment S4 turns back there, and travels through the eight flat tubes 4 that connect the compartment S4 and the compartment S2 to the compartment S2. The flat tube group formed by the eight flat tubes 4 constitutes the refrigerant path B.

  The refrigerant that has entered the compartment S2 turns back there, and travels through the seven flat tubes 4 connecting the compartment S2 and the compartment S5 to the compartment S5. The flat tube group formed by the seven flat tubes 4 constitutes the refrigerant path C.

  The refrigerant that has entered the compartment S5 turns back there, and travels to the compartment S3 through the five flat tubes 4 that connect the compartment S5 and the compartment S3. The flat tube group formed by the five flat tubes 4 constitutes the refrigerant path D. The refrigerant entering the section S3 flows out from the refrigerant inlet / outlet pipe 9.

  When the heat exchanger 1 is used as an evaporator, the refrigerant is supplied to the section S3 through the refrigerant inlet / outlet pipe 9. The refrigerant flow thereafter follows the refrigerant path when the heat exchanger 1 is used as a condenser. That is, the refrigerant enters the section S <b> 1 through the refrigerant path D → refrigerant path C → refrigerant path B → refrigerant path A and flows out of the refrigerant inlet / outlet pipe 8.

  FIG. 1 shows a base 10 of a device on which the heat exchanger 1 is mounted. The base 10 may be configured as a water pan that can store water, or may be a bottom plate of a simple device. In addition, in this embodiment and Embodiment 2-9 mentioned later, the heat exchanger 1 demonstrates as what is arrange | positioned on the base 10 in the state which made the header pipes 2 and 3 vertical.

  The heat exchanger 1 is installed in a state where the side plate 7B is lifted from the base 10 by a mount member (not shown). The gap between the side plate 7B and the base 10 is closed so that it does not become an air flow path that does not pass through the heat exchanger 1. What closes the gap is a drainage guide whose detailed structure is shown in FIG. In FIG. 1, a general reference numeral 20 is attached to the drainage guide, but in the individual embodiments shown in FIG.

  The drainage guide 20A shown in FIG. 2 is an injection molded product of synthetic resin, and has a shape composed of two side walls provided at a predetermined distance and an upper wall straddling the side walls. In other words, it has a shape like a heel upside down. The upper end of the drainage guide 20A is close to or in contact with the lower surface of the side plate 7B.

  A through hole 11 and a notch 12 for drainage are formed in the side plate 7B. A plurality of through holes 11 exist, and are arranged at a predetermined pitch along the longitudinal center line of the side plate 7B. A plurality of notches 12 are also present, and are arranged at predetermined pitches on both side edges in the longitudinal direction of the side plate 7B.

  As shown in FIG. 3, the through-hole 11 has an oval (track circle) shape that is long in the longitudinal direction of the side plate 7B. The notch 12 is V-shaped. The through holes 11 have a width that covers the pitch P of the fins 6 (in the case of corrugated fins, the interval from the ridge peak to the next valley) by a plurality of pitches. The notches 12 have a width equal to the interval pitch P of the fins 6, but may have a width that covers the interval pitch P of the fins 6 by a plurality of pitches, like the through holes 11.

  A drainage groove 21 extending in the longitudinal direction is formed at the upper end of the drainage guide 20A. The drainage groove 21 is located directly below the through-hole 11, and the upper ends (corresponding to convex portions) of both side walls thereof are in close contact with the lower surface of the side plate 7B. As shown in FIG. 4, the bottom of the drainage groove 21 is inclined downward toward one point, in this case, toward the longitudinal center of the drainage guide 20A. A drainage hole 22 is formed in the lowermost part of the drainage groove 21 and in the middle of the slope leading to it.

  As shown in FIG. 2, the top surface of the drainage guide 20 </ b> A descends toward the front and rear side surfaces (the upstream side of the airflow passing through the heat exchanger 1 is the front side and the downstream side is the rear side) on both sides of the drainage groove 21. The slope 23 is a slope.

  The drainage guide 20A closes the gap between the side plate 7B and the base 10 and prevents air from passing through the gap. For this reason, an air flow will pass only through the heat exchanger 1, and heat exchange efficiency will improve.

  The condensed water generated in the heat exchanger 1 descends to the side plate 7B. And it dripped from the location of the through-hole 11 and the notch 12. FIG. Below that, the drainage guide 20A whose upper end is close to or in contact with the side plate 7B is disposed, so the condensed water is quickly transferred to the drainage 20A guide and drained via the drainage guide 20A. Since the drain guide 20A is not a foamed resin used as a heat insulating material, it has durability and improves the reliability of the apparatus.

  Since the notch 12 has a shape that becomes narrower as it goes from the edge of the side plate 7B to the back, the condensed water that touches the edge is guided to the back of the notch 12, and merges at the back of the notch 12. To form water droplets. When the water droplets become large, they are dripped, that is, drained. If the notch 12 is provided with a width that covers the pitch P of the fins 6 by a plurality of pitches, the time until the condensed water gathers into large water droplets is shortened, and the condensed water can be drained efficiently. it can.

  Condensed water dropped from the through hole 11 is received by the drain groove 21 of the drain guide 20 </ b> A and drained onto the base 10 through the drain hole 22. The condensed water dropped from the notch 12 is received by the slope 23 of the drain guide 20A, and drained onto the base 10 along the front and rear sides of the drain guide 20A. The condensed water drained on the base 10 is further drained to the outside through an appropriate drainage path.

  The shape of the through hole 11 is not limited to an oval shape. It may be a rectangle or a rhombus. Only the notch 12 may be provided without providing the through hole 11. The shape of the notch 12 is not limited to the V shape. Various shapes such as a U-shape, a rectangle, and a trapezoid are possible.

  FIG. 5 shows a perspective view of the heat exchanger 1 combined with the drainage guide 20A. The heat exchanger 1 is bent into a planar shape L shape, and a drainage guide 20A is combined with the longer side.

  Embodiments after the second embodiment are shown in FIGS. In these embodiments, components that are functionally common to the first embodiment are denoted by the same reference numerals as used in the description of the first embodiment, and description thereof is omitted.

  A second embodiment is shown in FIGS. In the drainage guide 20B used in the second embodiment, drainage grooves 24 are formed at locations that are the slopes 23 in the drainage guide 20A of the first embodiment. The drainage groove 24 is for receiving condensed water dripping from the notch 12.

  The drainage groove 21 of the first embodiment has a shape in which the bottom surface is inclined downward toward the longitudinal center of the drainage guide 20A. However, the drainage groove 21 of the second embodiment has a plurality of drainage grooves 21 at predetermined intervals in the longitudinal direction. The valley part is provided, and the shape has a downward slope toward the valley part. That is, it has an undulating shape in which peaks and valleys appear alternately. A drain hole 22 is provided in the valley bottom.

  The bottom surface of the drainage groove 24 is also formed in the same shape as the drainage groove 21. The drain hole 22 extends beyond the drain groove 21 toward the drain groove 24, and also serves as a drain hole for the drain groove 24.

  The condensed water dropped from the through hole 11 is received by the drain groove 21 of the drain guide 20B and drained onto the base 10 through the drain hole 22. The condensed water dropped from the notch 12 is received by the drain groove 24 of the drain guide 20B and drained onto the base 10 through the drain hole 22. The condensed water drained on the base 10 is further drained to the outside through an appropriate drainage path.

  A third embodiment is shown in FIG. The drainage guide 20C used in the third embodiment does not include a drainage groove. Instead, a ridge line portion 25 (corresponding to a convex portion) extending in the longitudinal direction is formed at the center of the top surface. The ridge line portion 25 is close to or in contact with the through hole 11. Both sides of the ridge line portion 25 are inclined surfaces 26 that are inclined downward toward the front and rear side surfaces.

  Condensed water dropped from the through hole 11 and the notch 12 is received by the slope 26 of the drain guide 20C and drained onto the base 10 along the front and rear sides of the drain guide 20C. The condensed water drained on the base 10 is further drained to the outside through an appropriate drainage path.

  A fourth embodiment is shown in FIG. The drainage guide 20D used in the fourth embodiment is a vertical rib 27 (corresponding to a convex portion) that protrudes from the top surface of the drainage guide 20D at the portion that was the ridge line portion 25 in the drainage guide 20C of the third embodiment. ing. The rib 27 extends in the longitudinal direction of the drainage guide 20 </ b> D, and approaches or contacts the through hole 11. Both sides of the rib 27 are inclined surfaces 28 that are inclined downward toward the front and rear side surfaces. The slope 28 has a gentle slope near the rib 27 and a little steep from the middle.

  Condensed water dropping from the through hole 11 and the notch 12 is received by the slope 28 of the drain guide 20D and drained onto the base 10 along the front and rear sides of the drain guide 20D. The condensed water drained on the base 10 is further drained to the outside through an appropriate drainage path.

  A fifth embodiment is shown in FIG. The drainage guide 20E used in the fifth embodiment has a drainage hole 29 added to the drainage guide 20D of the fourth embodiment. The drain hole 29 is provided in the middle of the slope 28. A plurality of drain holes 29 are arranged at predetermined intervals along the longitudinal direction of the drain guide 20E.

  A heat generating portion 30 is disposed inside the drainage guide 20E. The heat generating unit 30 may be a refrigerant pipe (sometimes referred to as an anti-freezing pipe) through which a relatively warm refrigerant passes, or may be an electric heater such as a sheathed heater that is energized as necessary. By doing in this way, it can prevent that condensed water freezes inside the drainage guide 20E in winter.

  When the heat generating portion 30 is an electric heater, warm air rises through the exhaust hole 29 when the heater generates heat. Warm air heats the heat exchanger 1. Therefore, when frost is formed on the heat exchanger 1 or when the frost is frozen and turned into ice, the heat exchange efficiency of the heat exchanger 1 can be maintained by melting the frost and ice with warm air.

  Condensed water dropped from the through hole 11 and the notch 12 is received by the slope 28 of the drain guide 20E and drained onto the base 10 through the drain hole 29. The condensed water that has not been drained from the drain hole 29 is drained onto the base 10 along the front and rear sides of the drain guide 20E. The condensed water drained on the base 10 is further drained to the outside through an appropriate drainage path.

  A sixth embodiment is shown in FIGS. The drainage guide 20F used in the sixth embodiment has a shape in which a plurality of short vertical ribs 31 (corresponding to convex portions) are added to the drainage guide 20C of the third embodiment. The rib 31 crosses the ridge line portion 25 obliquely. As shown in FIG. 13, the ones that reverse the inclination direction are alternately arranged with a small interval.

  Condensed water dropped from the through hole 11 and the notch 12 is received by the slope 26 of the drain guide 20F, and drained onto the base 10 along the front and rear sides of the drain guide 20F. The condensed water drained on the base 10 is further drained to the outside through an appropriate drainage path.

  The rib 31 has a length that obliquely crosses the through hole 11. Since the condensed water to be dripped from the through hole 11 is quickly drawn down to the slope 26 by the ribs 31, the drainage speeds up further.

A seventh embodiment is shown in FIGS. The drainage guide 20G used in the seventh embodiment is
This is a developed form of the drainage guide 20F of the sixth embodiment. That is, in the drainage guide 20G, a plurality of planar circular protrusions 32 (corresponding to convex portions) are arranged along the ridge line portion 25 at predetermined intervals along the longitudinal direction. A plurality of planar V-shaped vertical ribs 33 (corresponding to convex portions) are arranged on the inclined surface 26 at predetermined intervals along the longitudinal direction. The rib 33 has a shape that is open toward the outside on either side of the protrusion 32. More specifically, a rib 33 having a size and shape corresponding to the notch 12 is formed at a position corresponding to the notch 12 of the end plate 7B.

  As shown in FIG. 15, three protrusions 32 enter the through hole 11. The ribs 33 correspond to the notches 12 on a one-to-one basis. The rib 33 contacts the lower surface of the end plate 7B.

  Condensed water dropped from the through hole 11 and the notch 12 is received by the slope 26 of the drain guide 20G and drained onto the base 10 along the front and rear sides of the drain guide 20G. The condensed water drained on the base 10 is further drained to the outside through an appropriate drainage path.

  Condensed water to be dropped from the through hole 11 is quickly drawn down to the slope 26 by the protrusion 32. Condensed water to be dropped from the notch 12 is quickly drawn down to the slope 26 by the rib 33. For this reason, drainage speeds up further.

  In FIG. 15, three protrusions 32 enter the through hole 11, but the number of three is merely an example and does not limit the invention. It may be a number other than three, such as two or four.

  An eighth embodiment is shown in FIGS. The drainage guide 20H used in the eighth embodiment is a developed form of the drainage guide 20B of the second embodiment. That is, in the drainage guide 20 </ b> H, vertical short ribs 34 a and 34 b (corresponding to convex portions) that are close to or in contact with the notch 12 are formed in the drainage groove 24. Each of the ribs 34 a and 34 b extends in the longitudinal direction of the drainage groove 24, and a plurality of ribs 34 a and 34 b are arranged at predetermined intervals along the longitudinal direction of the drainage groove 24.

  The rib 34a is provided at a position corresponding to the notch 12 of the side plate 7B. One rib 34 a corresponds to one notch 12, and the rib 34 a has a length that crosses the notch 12. As shown in FIG. 17, the rib 34a is formed at or near the tip of the bracket 34c1 or 34c2 protruding toward the center of the drainage guide 20H, and can move up and down by the elasticity of the brackets 34c1 and 34c2.

  The ribs 34a are arranged so as to form two rows at positions outside the drainage guide 20H. Ribs 34b are arranged between the rows of ribs 34a. Two ribs 34b are arranged in parallel. The space between the two ribs 34 b arranged becomes the drainage groove 21.

  Two ribs 34b are formed on the upper surface of a flat rectangular floating base 34d. The long side of the floating base 34d is connected to the drainage guide 20H by two connecting pieces 34e. The connecting piece 34e has a U-shape in a planar shape. With this shape, the connecting piece 34e has elasticity as a spring and supports the floating table 34d so as to be movable up and down. For this reason, the rib 34b and the drainage groove 21 can also be moved up and down.

  When the drainage guide 20H is combined with the heat exchanger 1, the ribs 34a, 34b and the drainage groove 21 can be moved up and down, so that variations in the height of the heat exchanger 1 can be absorbed. Thereby, the rib 34a can be sufficiently close to or in contact with the notch 12, and the rib 34b can be sufficiently close to or in contact with the through hole 11, respectively. When the heat exchanger 1 is assembled, the side plate 7B often has undulations on its surface, but the ribs 34a and 34b and the drainage grooves 21 can be reliably followed even with such undulations.

  Condensed water dropped from the through hole 11 is received by the drain groove 21 of the drain guide 20H and drained onto the base 10 through the drain hole 22. The condensed water dropped from the notch 12 is received by the drain groove 24 of the drain guide 20H and drained onto the base 10 through the drain hole 22. The condensed water drained on the base 10 is further drained to the outside through an appropriate drainage path.

  Condensed water to be dripped from the notch 12 is quickly drawn down to the drain groove 24 by the rib 34a. For this reason, drainage speeds up further.

  A ninth embodiment is shown in FIGS. The drainage guide 20I used in the ninth embodiment is a developed form of the drainage guide 20D of the fourth embodiment. That is, in the drainage guide 20I, a large number of vertical ribs 35 are formed on the inclined surface 28 and the front and rear side surfaces so as to be close to or in contact with the air flow direction end of the fin 6 above the side plate 7B. A plurality of ribs 35 are arranged at predetermined intervals along the longitudinal direction of the drainage guide 20I.

  The ribs 35 are only close to or in contact with the end portions of the fins 6 directly above the side plate 7B in the air flow direction. However, the fins located at the third stage as counted from the side plates 7B are arranged in places of the ribs 35. A tall rib 36 that is close to or in contact with the end of the air flow direction 6 is provided.

  Condensed water dripping from the through hole 11 and the notch 12 is received by the slope 28 of the drain guide 20I and drained onto the base 10 along the front and rear sides of the drain guide 20I. The condensed water drained on the base 10 is further drained to the outside through an appropriate drainage path.

  Since the ribs 35 and 36 approaching the fin 6 above the side plate 7B are provided, the condensed water is drawn down by the ribs 35 and 36 from the stage before flowing down to the side plate 7B. Thereby, drainage speeds up further.

  The combination of the heat exchanger 1 and the drainage guide 20 (general code) can be mounted on a separate air conditioner. A separate type air conditioner is composed of an outdoor unit and an indoor unit. The outdoor unit includes a compressor, a four-way valve, an expansion valve, an outdoor heat exchanger, an outdoor fan, and the like. The indoor unit is an indoor heat exchanger, a room Includes an internal blower. The outdoor heat exchanger functions as an evaporator during heating operation and functions as a condenser during cooling operation. The indoor heat exchanger functions as a condenser during heating operation and functions as an evaporator during cooling operation.

  FIG. 20 shows a basic configuration of a separate type air conditioner that uses a heat pump cycle as a refrigeration cycle. The heat pump cycle 101 includes a compressor 102, a four-way valve 103, an outdoor heat exchanger 104, a decompression / expansion device 105, and an indoor heat exchanger 106 connected in a loop. The compressor 102, the four-way valve 103, the heat exchanger 104, and the decompression / expansion device 105 are accommodated in the casing of the outdoor unit, and the heat exchanger 106 is accommodated in the casing of the indoor unit. An outdoor fan 107 is combined with the heat exchanger 104, and an indoor fan 108 is combined with the heat exchanger 106. The blower 107 includes a propeller fan, and the blower 108 includes a cross flow fan.

  The heat exchanger 1 according to the present invention can be used as the heat exchanger 104. In this case, the drainage guide 20 can be combined with it.

  The heat exchanger 106 is a combination of three heat exchangers 106A, 106B, and 106C like a roof that covers the blower 108. As one of the heat exchangers 106A, 106B, and 106C, the heat exchange of the present invention is performed. A vessel 1 can be used. When the heat exchanger 1 is used as the heat exchanger 106C, the drainage guide 20 can be combined therewith.

  FIG. 20 shows a state during heating operation. At this time, the high-temperature and high-pressure refrigerant discharged from the compressor 102 enters the indoor heat exchanger 106 where it dissipates heat and condenses. The refrigerant exiting the heat exchanger 106 enters the outdoor heat exchanger 104 from the decompression / expansion device 105 and expands there, takes heat from the outdoor air, and returns to the compressor 102. The airflow generated by the indoor fan 108 promotes heat dissipation from the heat exchanger 106, and the airflow generated by the outdoor fan 107 promotes heat absorption of the heat exchanger 104.

  FIG. 21 shows a state during cooling operation or defrosting operation. At this time, the four-way valve 103 is switched so that the refrigerant flow is reversed from that during the heating operation. That is, the high-temperature and high-pressure refrigerant discharged from the compressor 102 enters the outdoor heat exchanger 104, where it dissipates heat and condenses. The refrigerant exiting the heat exchanger 104 enters the heat exchanger 106 on the indoor side from the decompression / expansion device 105 and expands there, takes heat from the indoor air, and returns to the compressor 102. The airflow generated by the outdoor fan 107 promotes heat dissipation from the heat exchanger 104, and the airflow generated by the indoor fan 108 promotes heat absorption of the heat exchanger 106.

  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.

  For example, the drainage guide may be formed of a foamed resin. In this case, since the condensed water penetrates into the foamed resin and deteriorates the foamed resin, it is necessary to perform maintenance such as replacement when the foamed resin deteriorates.

  Further, if the shape of the drainage guide is a shape that can be molded by extrusion molding, the drainage guide may be molded by extrusion molding instead of injection molding.

  Further, a refrigerator or a dehumidifier may be applied as a device including a side flow type parallel flow heat exchanger.

  The present invention can be widely used for devices including a side flow type parallel flow heat exchanger.

DESCRIPTION OF SYMBOLS 1 Heat exchanger 2, 3 Header pipe 4 Flat tube 5 Refrigerant passage 6 Fin 7T, 7B Side plate 11 Through-hole 12 Notch 20A-20I Drain guide 21 Drain groove 22 Drain hole 24 Drain groove 25 Ridge part 27, 31, 33, 34a, 34b Rib 32 Protrusion 29 Drainage hole 30 Heating part 35, 36 Rib

Claims (4)

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, A parallel flow type heat exchanger of a side flow type equipped with a plurality of fins attached to the flat surface of the flat tube and a side plate attached to the outside of the fins located on the outermost side among the plurality of fins,
A drainage through-hole or notch is formed in the side plate located in the lower part of the heat exchanger, and an upper end of the side plate between the base on which the heat exchanger is installed and the side plate approaches the side plate. A guide is disposed, the drainage guide has at least one convex portion on an upper portion thereof, and the convex portion is close to or in contact with the through hole or the notch ,
The drainage guide has a shape composed of two side walls provided at a predetermined distance and an upper wall straddling the side walls,
The drainage guide is provided with a drainage groove at the top, and an upper part of a side wall of the drainage groove is close to or in contact with the through hole or notch, and is provided with a side flow parallel flow type heat exchanger.   The apparatus having a parallel flow type heat exchanger according to claim 1, wherein the through holes or the notches have a width that covers a plurality of pitches of the fins. The apparatus provided with the parallel flow type heat exchanger of the side flow type according to claim 1 or 2 , wherein a heat generating part is disposed inside the drainage guide. Wherein the drainage guide, according to any one of claims 1 to 3, characterized in that the ribs adjacent to or in contact with the end of the flow direction of the air fins above the side plate is formed Equipment with side flow parallel flow heat exchanger.

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