JP2012193958A - Condenser - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a condenser improved in its condensing efficiency.SOLUTION: This condenser 139 for exchanging heat between the air as a condensed fluid flowing inside and a condensing fluid flowing outside, includes: a resin common air tube 134; and a metallic condensing section 120. The common air tube 134 has a third air tube 134c through which the condensed fluid flows, and a fourth air tube 134d through which the condensed fluid flows. The condensing section 120 has a plurality of condenser tubes 135 which are disposed between the third air tube 134c and the fourth air tube 134d, and through which the condensed fluid flowing from the third air tube 134c to the fourth air tube 134d is circulated, a first tube plate disposed at an upper end side of the condenser tube 135, and a second tube plate disposed at a lower end side of the condenser tube 135. The first tube plate has a plurality of holes penetrating through the plate thickness direction. The condenser tubes 135 are disposed at predetermined intervals, and extended downward from the holes of the first tube plate.

Description

  The present invention relates to a condenser.

  2. Description of the Related Art Conventionally, there is a resin condenser that cools a fluid to be condensed by causing heat exchange between the flow channel through which the fluid to be condensed flows and the condensed fluid flowing outside the channel.

  For example, there is a condenser that includes an upper horizontal pipe, a lower horizontal pipe, and a plurality of fluid to be condensed passages (corresponding to flow paths) (see Japanese Patent Application Laid-Open No. 11-304389). The condenser is provided with a space for allowing the condensed fluid to be heat-exchanged to pass between the adjacent condensed fluid passage pipes. In this condenser, the fluid to be condensed that has flowed into the upper horizontal tube passes through the plurality of fluids to be condensed and flows to the lower horizontal tube. At this time, heat exchange is performed between the condensed fluid flowing through the condensed fluid passage tube and the condensed fluid passing through the space. With this configuration, the condenser cools the fluid to be condensed.

  However, the above-described condenser is formed by blow molding. For this reason, there exists a problem that the thickness of a flow path is thick and heat exchange efficiency is bad. Therefore, the condensation efficiency of the fluid to be condensed may be reduced.

  Then, the subject of this invention is providing the condenser which can improve a condensation efficiency.

  A condenser according to a first aspect of the present invention is a condenser for exchanging heat between a condensed fluid flowing inside and a condensed fluid flowing outside, wherein the fluid to be condensed is air, and the first condenser made of resin And a second condensing part made of metal. The first condensing unit includes a first flow path through which the fluid to be condensed flows and a second flow path through which the fluid to be condensed flows. The second condensing unit includes a plurality of tubes, a first tube plate, and a second tube plate. The plurality of pipes are disposed between the first flow path and the second flow path, and the fluid to be condensed flowing from the first flow path to the second flow path circulates. The first tube sheet is disposed on the upper end side of the plurality of tubes. The second tube sheet is disposed on the lower end side of the plurality of tubes. Further, the first tube sheet is provided with a plurality of holes penetrating in the thickness direction. Further, the tubes are arranged at a predetermined interval and extend downward from the hole.

  In the condenser according to the first invention, the second condensing part is made of metal. For this reason, heat exchange efficiency can be improved compared with the case where the 2nd channel part is constituted by resin.

  Thereby, the condensation efficiency of the fluid to be condensed can be improved.

  In addition, since the tubes are arranged at a predetermined interval, in this condenser, heat exchange efficiency is improved as compared with a case where a plurality of tubes are arranged continuously without any interval. be able to. Thereby, the condensation efficiency can be improved.

  Furthermore, the tube sheet is arrange | positioned at the both ends of the some pipe | tube. For this reason, a some pipe | tube can be fixed with a tube sheet.

  The condenser according to the second invention is the condenser according to the first invention, and the first condensing part and the plurality of tubes are connected via the first tube plate and the second tube plate. For this reason, for example, the resin constituting the first condensing part and the pipes constituting the first condensing part are configured to form the resin and the plural pipes constituting the first condensing part, such as metal deterioration is promoted by bringing the resin constituting the first condensing part into contact with the metal constituting the plural pipes for a long time. Even if the compatibility with the metal is poor, by configuring the tube plate with a metal that has a good compatibility with a resin that does not easily cause metal degradation even if it is in contact with the resin constituting the first condensing part for a long time, The durability of the condenser can be improved.

  The condenser according to the third invention is the condenser according to the first invention or the second invention, and the inner diameter of the tube is 8 mm or more.

  For example, when air is condensed as a fluid to be condensed in the condenser and condensed water is generated inside the tube, the condensed water may stay at the end of the tube due to surface tension. In addition, since the inner diameter of the tube is small, there is an increased risk that condensed water will remain at the end of the tube due to surface tension. For this reason, in this condenser, the surface tension of the condensed water can be made difficult to work by setting the inner diameter of the tube to 8 mm or more. Therefore, the possibility that the fluid to be condensed stays at the end of the pipe can be reduced.

  This can reduce the possibility that the flow of the fluid to be condensed is hindered.

  A condenser according to a fourth invention is the condenser according to any one of the first to third inventions, and the first condensing part is formed by blow molding. For this reason, in this condenser, a 1st condensation part can be formed easily.

  The condenser according to a fifth aspect of the present invention is the condenser according to any one of the first to fourth aspects of the present invention, wherein the first flow path part is disposed above the second flow path part. Further, the pipe extends from the first flow path to the second flow path obliquely downward with respect to the vertical direction. For this reason, for example, when the pipe extends along the direction in which the fluid to be condensed flows, the pressure loss in the second condensing unit can be reduced.

  An air conditioner according to a sixth aspect of the present invention includes a heater, an adsorption element, a blower, and the condenser according to any one of claims 1 to 5. The adsorbing element can adsorb moisture. The blower applies high-temperature air whose temperature has been increased by the heater to the adsorption element to release moisture from the adsorption element. The condenser causes high-temperature air that has passed through the adsorption element to flow inside as a fluid to be condensed.

  In the air conditioner according to the sixth aspect of the present invention, the condenser has a metal second condensing part. For this reason, compared with an air conditioner provided with a resin condenser, the heat exchange efficiency can be improved. Therefore, it is possible to improve the condensing efficiency of the high temperature air flowing inside the condenser.

  Thereby, dehumidification can be performed efficiently.

  In the condenser according to the first invention, the condensation efficiency of the fluid to be condensed can be improved.

  In the condenser according to the second invention, durability can be improved.

  In the condenser according to the third aspect of the invention, the possibility that the flow of the fluid to be condensed is hindered can be reduced.

  In the condenser according to the fourth invention, the first condensing part can be easily formed.

  In the condenser according to the fifth aspect, the pressure loss in the second condensing part can be reduced.

  In the air conditioner according to the sixth aspect of the invention, it is possible to efficiently dehumidify.

1 is an external perspective view of an air conditioner including a condenser according to an embodiment of the present invention. The perspective view of a humidification unit (a drain pan is omitted). Exploded view of a water wheel. The perspective view of the conventional dehumidification unit. The front view of the condenser which concerns on embodiment of this invention (a 1st ventilation pipe and a 2nd ventilation pipe are abbreviate | omitted). The external appearance perspective view of the condenser which concerns on embodiment of this invention (a 1st ventilation pipe and a 2nd ventilation pipe are abbreviate | omitted). The perspective view of a condensation part. The top view of a condensation part.

  The condenser according to the present invention is a multi-tube sensible heat condenser used to exchange heat between a first fluid that is a fluid flowing inside and a second fluid that is a fluid flowing outside. Below, the air conditioner 100 provided with the condensation part 20 which concerns on embodiment of this invention is demonstrated using FIG.

<Configuration of air conditioner>
The air conditioner 100 has a humidifying function, a dehumidifying function, and an air purifying function, and functions as a humidifier during the humidifying operation, as a dehumidifying device during the dehumidifying operation, and as an air purifier during the air cleaning operation. In the present embodiment, the air conditioner 100 can be operated not only by a single function but also by combining a plurality of functions at the same time. The plurality of combinations are, for example, a combination of an air cleaning function and a dehumidifying function, and a combination of an air cleaning function and a humidifying function.

  As shown in FIG. 1, the air conditioner 100 includes a main body casing 10, a blower 2, a dehumidifying unit 103, a humidifying unit 4, an air cleaning unit 5, and a control unit 6. In the present embodiment, a caster (not shown) is provided on the lower surface of the main casing 10 (the surface facing the indoor floor surface) so that the user can easily move the air conditioner 100. ing.

  The main body casing 10 has a substantially rectangular parallelepiped shape, and houses the blower 2, the dehumidifying unit 103, the humidifying unit 4, the air cleaning unit 5, the control unit 6, and the like. The main body casing 10 has a pull-out type first door 10a and a rotary type second door 10b.

  When the blower 2 is accommodated in the main casing 10, the blower 2 is disposed on the side opposite to the air purifying unit 5. Moreover, when this air conditioner 100 is seen from the air purification part 5 side, each internal component is located in order of the air purification part 5, the dehumidification unit 103, the humidification unit 4, and the air blower 2. For this reason, when the blower 2 is operated, an external air flow A <b> 1 is formed in which external air passes through the dehumidifying unit 103 and the humidifying unit 4 from the air cleaning unit 5 side and reaches the blower 2.

  The control unit 6 is disposed in the upper part of the main body casing 10 and controls the air cleaning unit 5, the dehumidifying unit 103, the humidifying unit 4 and the blower 2.

  In FIG. 1, the water storage container 40, the vaporization unit 41, and the water wheel 42, which are components of the humidifying unit 4, are drawn out from the humidifying unit 4, but are arranged at predetermined positions of the humidifying unit 4 during operation. .

  The humidifying unit 4 is disposed so as to overlap below the second blower 33 of the dehumidifying unit 103 during operation, and mainly includes a water storage container 40, a water wheel 42, and a vaporizing unit 41 as shown in FIG. Have.

  The water storage container 40 is a water source of moisture given to the air flowing in the external air flow A1, and is detachably accommodated in the main body casing 10, as shown in FIG. Specifically, the water storage container 40 is taken out from the opening 12 of the main casing 10 by pulling out the pull-out type first door 10 a of the main casing 10. Further, as shown in FIG. 2, a bearing 40 a having an open top is provided inside the water storage container 40, and this bearing 40 a rotatably supports a rotating shaft 424 described later. Moreover, the water storage container 40 has the drain pan 40b, as shown in FIG.

  As shown in FIGS. 2 and 3, the water turbine 42 includes a wheel 421, a wheel cover 422, and a second gear 423, and can rotate inside the water storage container 40 within a plane including a vertical direction. is there.

  As shown in FIG. 3, the wheel 421 is formed with a plurality of recesses 421a that are recessed from one side surface toward the opposite side surface so as to draw a circle. Further, a wheel cover 422 described later is combined with the wheel 421 so as to cover the opening side of the recess 421a. A trapezoidal hole 422a is formed in the wheel cover 422 so as to draw a circle at a position facing the recess 421a of the wheel 421. The size of the trapezoidal hole 422a is about half of the opening of the recess 421a. For this reason, when the wheel cover 422 is combined with the wheel 421, the opening of the recess 421a is in a state where about half is opened. The second gear 423 is a gear that meshes with a first gear 411 of the vaporization unit 41 described later, and a rotation shaft 424 shared by the wheel 421, the wheel cover 422, and the second gear 423 is provided at the center of rotation. The second gear 423, the wheel cover 422, and the wheel 421 are combined in this order with the rotation shaft 424 as the same axis. The rotating shaft 424 is rotatably supported by the bearing 40a of the water storage container 40 as described above. For this reason, when the water storage container 40 is pulled out from the main body casing 10, the user can take out the water wheel 42 from the water storage container 40 and clean it. Note that the height from the bottom surface of the water storage container 40 to the axis of the bearing 40a is such that the recess 421a at the lowest position of the water turbine 42 is submerged even when the water stored in the water storage container 40 is at the lowest water level. It is set to be.

  The vaporization unit 41 is a member that vaporizes the supplied water, and is disposed in the vicinity of the water wheel 42 as illustrated in FIG. 2, and is disposed above the water level when the water storage container 40 is full. . Moreover, the vaporization part 41 has the vaporization filter 44 and the 1st gearwheel 411, and can rotate in the surface containing a perpendicular direction similarly to the water turbine 42.

  As shown in FIG. 2, the first gear 411 is fixed to the outer peripheral edge of the vaporization filter 44, and is supported by meshing with a drive gear 431 and a second gear 423 that rotate by driving of the drive unit 43. Further, the drive gear 431 and the second gear 423 are located below the rotation shaft 424 of the first gear 411 and are located on the opposite sides of the vertical center line of the vaporizing unit 41.

  With such a configuration, in the humidification unit 4, as shown in FIG. 2, when the drive unit 43 is driven, the vaporization unit 41 and the water turbine 42 rotate in the plane including the vertical direction. As the water wheel 42 rotates, the concave portion 421a passes through the water in the water storage container 40 in order and rises. When the recess 421a is submerged, water enters the recess 421a from the trapezoidal hole 422a. For this reason, when the recessed part 421a comes out of water, the inside of the recessed part 421a is filled with water. And as the recessed part 421a approaches the uppermost position, the water inside the recessed part 421a flows out from the trapezoidal hole 422a, and when the recessed part 421a passes the uppermost position, almost all of the water flows out. At this time, water flows out toward the side surface of the vaporizing section 41 adjacent to the concave portion 421a because a certain amount of momentum is added by gravity when flowing out.

  Further, as shown in FIG. 1, a selection panel 11 for selecting an air cleaning operation, a dehumidifying operation and a humidifying operation is provided on the uppermost surface of the main body casing 10, and this selection panel 11 is connected to the control unit 6. ing.

  Next, before explaining the dehumidifying unit 103 according to the embodiment of the present invention, a conventional dehumidifying unit 3 before the present invention is made will be described with reference to FIG.

<Configuration of conventional dehumidifying unit>
As shown in FIG. 4, the conventional dehumidifying unit 3 includes an adsorption element 31, a heater 32, a second blower 33, and a condenser 39.

  The adsorbing element 31 is a honeycomb structure, and is formed into a disk shape from a porous material obtained by mixing and kneading zeolite powder, a binder, and an expansion agent. The binder here is, for example, selected from thermoplastic resins such as modified PPE, polypropylene, polystyrene, and ABS resin. The expansion agent expands when the honeycomb structure is formed, thereby forming innumerable bubbles. For this reason, the adsorption | suction element 31 has high adsorptivity with respect to a water | moisture content.

  The heater 32 is disposed so as to oppose a part on the back side of the adsorption element 31. The heater 32 has a substantially fan shape and is provided at a position covering about one-sixth of the back side of the adsorption element 31.

  The 2nd air blower 33 has a shape which protrudes toward the back side from the upper part of the adsorption | suction element 31. As shown in FIG. The heater 32 and the second blower 33 are connected to each other by a first blower pipe 34a included in the condenser 39 so that air can flow. When the second blower 33 is operated, an air flow is formed, and the air flows in the first sending pipe 34a in the direction indicated by the arrow in FIG. The air flowing in the vicinity of the heater 32 is heated there to become high-temperature air.

  As shown in FIG. 4, the condenser 39 includes a common blower pipe 34 and a condensing unit 20. The condenser 39 is made of resin.

  The common air duct 34 includes a first air duct 34a, a second air duct 34b, a third air duct 34c, a fourth air duct 34d, and a fifth air duct 34e. The high-temperature air heated by the heater 32 travels from the back side of the opposing adsorption element 31 toward the front side in the thickness direction of the adsorption element 31 and flows to the front side of the adsorption element 31. Here, in the region where the high-temperature air passes among the regions of the adsorption element 31, the adsorption element 31 is warmed by the high-temperature air, so that the retained moisture is released by the air flow by the second blower 33. For this reason, the air that has passed through the adsorption element 31 from the back side toward the front side becomes high-temperature and high-humidity air by containing moisture released from the adsorption element 31, and proceeds to the second blower pipe 34b.

  The 2nd ventilation pipe 34b is exhibiting substantially fan shape in the front view, and is arrange | positioned so that a part of adsorption | suction element 31 may be covered from a front side. Moreover, the 2nd ventilation pipe 34b is provided in the position which pinches | interposes the same part of the adsorption | suction element 31 with the heater 32 mentioned above, and has covered about 1/6 of the front side of the adsorption | suction element 31. FIG.

  The 3rd ventilation pipe 34c has connected the 2nd ventilation pipe 34b and the condensation part 20 so that the distribution | circulation of the air with the 2nd ventilation pipe 34b and the condensation part 20 can be performed. For this reason, the high-temperature, high-humidity air that has passed through the second blower pipe 34 b can be directed to the condensing unit 20.

  The 4th ventilation pipe 34d has connected the condensation part 20 and the 5th ventilation pipe 34e so that the distribution | circulation of the air of the condensation part 20 and the 5th ventilation pipe 34e can be performed.

  The fifth blower pipe 34e communicates the fourth blower pipe 34d and the second blower 33. The air that has passed through the fourth blower pipe 34d is sucked into the second blower 33 through the fifth blower pipe 34e.

  As shown in FIG. 4, the condensing unit 20 connects the third air blowing pipe 34 c and the fourth air blowing pipe 34 d, and has a plurality of condensing pipes 35. The condensing pipe 35 extends in the vertical direction from the third air blowing pipe 34c to the fourth air blowing pipe 34d. Further, the condensing pipes 35 are arranged at a predetermined interval. For this reason, in the condensing part 20, the external air passage part 35a through which the external airflow A1 passes is formed between the condensing pipes 35. For this reason, the high-temperature high-humidity air that has flowed through the third blower pipe 34 c is guided to the fourth blower pipe 34 d while being in contact with the inner wall surfaces of the plurality of condensing pipes 35 included in the condensing unit 20. At this time, the high-temperature and high-humidity air flowing through the third blower pipe 34c is distributed by the plurality of condensing pipes 35, thereby forming a plurality of air flow paths. Further, the distributed air merges and is guided to the fourth blower pipe 34d.

  With such a configuration, the high-temperature and high-humidity air flowing inside the condenser 39 flows while contacting the inner wall surface of the condensing pipe 35 of the condensing unit 20. For this reason, the external air that passes outside the condenser 39 exchanges heat with the high-temperature and high-humidity air that flows inside the condenser tube 35 and takes heat away from the air that flows inside the condenser tube 35 without being mixed with each other. . Therefore, the high-temperature and high-humidity air that has contacted the inner wall surface of the condensation tube 35 is cooled, and condensation occurs on the inner wall surface of the condensation tube 35. This condensed water flows downward through the condenser 39 and flows into the water storage container via a drain pan through a drain port (not shown) provided penetrating the lower surface of the condensing unit 20 in the vertical direction.

  The dehumidifying unit 3 further includes a drive motor (not shown). The drive motor has a pinion gear. A driven gear that meshes with the pinion gear is provided on the outer periphery of the adsorption element 31. For this reason, when the drive motor operates, the power is transmitted to the driven gear meshing with the pinion gear, and the adsorption element 31 rotates. And while the adsorption | suction element 31 rotates, the external air inhaled by the main body casing 10 passes a part of adsorption | suction element 31. FIG. When the air passes through the adsorbing element 31, the adsorbing element 31 adsorbs and holds moisture in the air to be passed, and reduces the moisture in the air after passing. Then, as the adsorption element 31 continues to rotate, the portion of the adsorption element 31 that retains moisture moves to a position facing the heater 32 and is heated. As a result, a part of the adsorbing element 31 that retains moisture releases the retained moisture on the spot, and hardly retains moisture. And the adsorption | suction element 31 contacts with new external air by continuing rotation, and adsorb | sucks and hold | maintains a water | moisture content from this new external air. Thus, the adsorption | suction and discharge | release of a water | moisture content can be repeated because the adsorption | suction element 31 rotates.

  Next, the dehumidifying unit 103 of the air conditioner 100 according to the present embodiment will be described.

<Configuration of dehumidifying unit of this embodiment>
The dehumidifying unit 103 includes an adsorption element, a heater, a second blower, and a condenser 139. In addition, since it is the structure similar to the above-mentioned conventional dehumidification unit about the structure other than the 3rd ventilation pipe 134c of the condenser 139, the 4th ventilation pipe 134d, and the condensation part 120, description is abbreviate | omitted. Moreover, in this embodiment, the common ventilation pipe 134 is comprised with the polypropylene, and is formed by blow molding. In addition, in this embodiment, although the common ventilation pipe | tube 134 is comprised with the polypropylene, it is not limited to this, You may comprise with other resin.

<Third air duct>
One end of the third air duct 134c is connected to the second air duct. Further, as shown in FIG. 5 and FIG. 6, the air of the second blower pipe and the condensing unit 120 is provided at the other end of the third blower pipe 134 c in a state where the third blower pipe 134 c and the condensing part 120 are combined. An opening 134f that can be connected to the upper end of the condensing unit 120 is formed. Thus, the 3rd ventilation pipe 134c has connected the 2nd ventilation pipe and the condensation part 120. FIG. For this reason, substantially all of the high-temperature, high-humidity air that has passed through the second blower pipe can be directed to the condensing unit 120 without resistance. Further, a screw hole 180a through which a screw 180 described later is inserted is provided in the vicinity of the opening 134f of the third blower pipe 134c. In addition, the 3rd ventilation pipe 134c is arrange | positioned above the 4th ventilation pipe 134d mentioned later.

<4th air duct>
As shown in FIGS. 5 and 6, one end of the fourth air duct 134d is connected to the fifth air duct 134e. Further, at the other end of the fourth air duct 134d, a condensing part is provided so that air can flow between the condensing part 120 and the fifth air duct 134e in a state where the fourth air duct 134d and the condensing part 120 are combined. An opening 134g that can be connected to the lower end of 120 is formed. Thus, the 4th ventilation pipe 134d has connected the condensation part 120 and the 5th ventilation pipe 134e. Further, a screw hole 181a through which a screw 181 described later is inserted is provided in the vicinity of the opening 134g of the fourth blower pipe 134d.

<Condensation part>
As shown in FIGS. 5 and 6, the condensing unit 120 communicates the third blower pipe 134c and the fourth blower pipe 134d. For this reason, the high-temperature and high-humidity air that has flowed through the third blower pipe 134c is guided to the fourth blower pipe 134d while being in contact with the outer wall surfaces of a plurality of condensing pipes 135 described later. At this time, the high-temperature and high-humidity air that has flowed through the third blower pipe 134c is distributed by the plurality of condensing pipes 135, thereby forming a plurality of air flow paths. Further, the distributed air merges and is guided to the fourth blower pipe 134d.

  Further, as shown in FIG. 7, the condensing unit 120 includes a plurality of condensing tubes 135 and tube plates 136 and 137.

  The condensing pipe 135 is a copper pipe having an inner diameter of 8.5 mm. In this embodiment, the inner diameter of the condensing tube 135 is 8.5 mm. However, the present invention is not limited to this, and the inner diameter of the condensing tube 135 may be 8 mm or more. In the present embodiment, the condensing pipe 135 is a copper pipe, but is not limited to this, and is composed of another metal, for example, aluminum subjected to surface treatment for preventing corrosion by water. May be.

  The tube plates 136 and 137 are members that support the condensing tube 135 so that the condensing tubes 135 are arranged at a predetermined interval. Further, the tube plates 136 and 137 are constituted by a first tube plate 136 disposed on one end side of the condensing tube 135 and a second tube plate 137 disposed on the other end side of the condensing tube 135.

  The first tube sheet 136 is a stainless steel (SUS) member having a substantially rectangular shape. Further, the first tube plate 136 is provided with a plurality of circular holes 136 a penetrating in the thickness direction of the first tube plate 136. Further, as shown in FIGS. 7 and 8, the holes 136a are arranged in three rows of a first row hole group 136b, a second row hole group 136c, and a third row hole group 136d in the longitudinal direction of the first tube plate 136. Are arranged at a predetermined pitch A (in the present embodiment, an interval of 18 mm) A. Further, the first row hole group 136b, the second row hole group 136c, and the third row hole group 136d are staggered with the rows 136b, 136c, and 136d being displaced by a half pitch in the longitudinal direction of the first tube plate 136. Is arranged. Further, the first tube plate 136 and the condensing tube 135 are fixed by the hole 136a of the first tube plate 136 being penetrated through the condensing tube 135 and subjected to a tube expansion process. Further, the first tube plate 136 is provided with a screw hole 180b through which a screw 180 described later is inserted.

  Similar to the first tube plate 136, the second tube plate 137 is a stainless steel member having a substantially rectangular shape. Further, the second tube plate 137 is provided with a plurality of circular holes 137 a penetrating in the thickness direction of the second tube plate 137. In addition, the holes 137a have three rows of the first row hole group 137b, the second row hole group 137c, and the third row hole group 137d in the longitudinal direction of the second tube plate 137, similarly to the first tube plate 136. In order to be provided, they are arranged at a predetermined pitch (in this embodiment, an interval of 18 mm). Further, the first row hole group 137b, the second row hole group 137c, and the third row hole group 137d are staggered with the rows 137b, 137c, and 137d being shifted by a half pitch in the longitudinal direction of the second tube plate 137. Is arranged. In addition, the second tube plate 137 and the condensing tube 135 are fixed by the hole 137a of the second tube plate 137 penetrating through the condensing tube 135 and subjected to tube expansion processing. Further, the second tube plate 137 is provided with a screw hole 181b through which a screw 181 described later is inserted.

  In the present embodiment, the first tube plate 136 and the second tube plate 137 are made of stainless steel, but may be made of copper that has been surface-treated so that copper damage is less likely to occur. Good.

  With this configuration, in the condensing unit 120, the plurality of condensing tubes 135 are fixed by the first tube plate 136 and the second tube plate 137. For this reason, in the condensing part 120, the condensing pipes 135 are arranged in a staggered manner.

  Next, a fixing operation between the common air duct 134 and the condensing unit 120 will be described.

  First, the end of the third blower pipe 134c formed by blow molding is cut into a predetermined shape. Accordingly, the third air duct 134c has an opening for communicating the internal space of the third air duct 134c and the internal space of the condenser 120 in a state where the third air duct 134c and the condenser 120 are combined. 134f is formed. Furthermore, the 4th ventilation pipe 134d is cut | disconnected by the predetermined shape at the edge part similarly to the 3rd ventilation pipe 134c. Accordingly, the fourth air duct 134d has an opening for communicating the internal space of the fourth air duct 134d and the internal space of the condenser 120 in a state where the fourth air duct 134d and the condenser 120 are combined. 134g is formed.

  Next, the first tube plate 136 is fitted inside the third blower tube 134c from the opening 134f of the third blower tube 134c. Further, the second tube plate 137 is fitted inside the fourth blower tube 134d from the opening 134g of the fourth blower tube 134d.

  And the condensation part 120, the 3rd ventilation pipe 134c, and the 4th ventilation pipe 134d are fixed by screwing. Specifically, the third blower pipe 134c and the condensing unit 120 are inserted through a screw hole 180a provided in the third blower pipe 134c and a screw hole 180b provided in the first tube plate 136 in this order. And fixed by screwing. Further, the fourth blower pipe 134d and the condensing unit 120 are inserted through the screw holes 181a provided in the fourth blower pipe 134d and the screw holes 181b provided in the second tube plate 137 in this order. Fixed by a stop.

  In the present embodiment, among the plurality of condensing tubes 135 fixed by the first tube plate 136 and the second tube plate 137, the first row hole group 136b and the first row hole group 137b are penetrated. The row of the condenser tubes 135 is the first row condensing tube group, the row of the condensing tubes 135 passing through the second row hole group 136c and the second row hole group 137c is the second row condensing tube group, the third row hole group. Assuming that the condensing tube 135 passing through 136d and the third row hole group 137d is a third row condensing tube group, the plurality of condensing tubes 135 include the condensing unit 120, the third air duct 134c, and the fourth air duct. 134d is fixed and arranged in order of the first row condensation tube group, the second row condensation tube group, and the third row condensation tube group with respect to the external air flow A1. Further, when the condenser 139 is viewed from the front, as shown in FIG. 5, the condensing pipe 135 of the condensing unit 120 is arranged so as to follow the air flow direction from the third air duct 134 c to the fourth air duct 134 d. The third air duct 134c extends from the third air duct 134c to the fourth air duct 134d so as to be obliquely downward with respect to the vertical direction.

  With such a configuration, the high-temperature and high-humidity air flowing inside the condenser 139 flows while contacting the inner wall surface of the condenser 139. For this reason, the external air passing through the outside of the condenser 139 exchanges heat with the high-temperature and high-humidity air flowing inside the condenser 139, and does not mix with each other, so that the inside of the condenser 139, mainly the condenser pipe 135, is exchanged. Takes heat away from the air flowing inside. Therefore, the high-temperature and high-humidity air that has contacted the inner wall surface of the condenser tube 135 is cooled, and condensation occurs on the inner wall surface of the condenser tube 135. The condensed water flows downward in the condensing unit 120 and flows into the water storage container 40 through the drain pan 40b through the drain port 128 (see FIG. 5) provided below the fourth blower pipe 134d.

  In addition, the air flowing inside the condensation pipe 135 circulates in the dehumidifying unit 103. Specifically, the air flowing through the condensing unit 120 is sent to the second blower via the fourth blower pipe 134d and the fifth blower pipe 134e, and again from the second blower to the first blower pipe, the second blower pipe, It is sent to the condensing part 120 through the 3rd ventilation pipe 134c.

<Features>
(1)
2. Description of the Related Art Conventionally, there is a resin condenser that cools a fluid to be condensed by causing heat exchange between the flow channel through which the fluid to be condensed flows and the condensed fluid flowing outside the channel. For example, a condenser disclosed in Japanese Patent Application Laid-Open No. 11-304389 includes an upper horizontal pipe, a lower horizontal pipe, and a plurality of condensed fluid passage pipes (corresponding to flow paths). The condenser is provided with a space for allowing the condensed fluid to be heat-exchanged to pass between the adjacent condensed fluid passage pipes. In this condenser, the fluid to be condensed that has flowed into the upper horizontal tube passes through the plurality of fluids to be condensed and flows to the lower horizontal tube. At this time, heat exchange is performed between the fluid to be condensed flowing through the fluid to be condensed passage and the fluid passing through the space. With this configuration, the condenser cools the fluid to be condensed.

  However, the above-described condenser is formed by blow molding. For this reason, there exists a problem that the thickness of a flow path is thick and heat exchange efficiency is bad. Therefore, the condensation efficiency of the fluid to be condensed may be reduced.

  Therefore, in the above embodiment, the condensing unit 120 includes a plurality of condensing pipes 135 that are copper pipes. Copper constituting the condensing tube 135 has a good thermal conductivity and is resistant to corrosion against water. For this reason, heat exchange efficiency can be improved compared with the case where a condensation part is constituted by resin or stainless steel.

  Thereby, the condensation efficiency of air can be improved.

  In addition, since the condensation efficiency of the condensing unit 120 is improved, the size of the condensing unit can be reduced as compared with the conventional condenser 39.

  Furthermore, since the condensing pipe 135 has a cylindrical shape, pressure loss can be reduced as compared with a conventional substantially rectangular parallelepiped condensing pipe.

(2)
In the said embodiment, when the condensing pipe 135 currently fixed to the tube plates 136 and 137 is seen from the top surface, the condensing pipe 135 is arrange | positioned at zigzag form. For this reason, in this condenser 139, the external airflow A1 generated by contacting the condenser tube 135 of the first row condenser tube group that is the condenser tube 135 that first contacts the external air of the plurality of condenser tubes 135. Can be less affected by stagnation. Therefore, the heat exchange efficiency can be improved.

  As a result, the condensation efficiency can be improved.

(3)
In the above embodiment, the condensing unit 120 includes the first tube plate 136 and the second tube plate 137 that are disposed at both ends of the condensing tube 135. For this reason, the plurality of condensing tubes 135 can be fixed by the first tube plate 136 and the second tube plate 137.

(4)
In the above embodiment, the third blower pipe 134c and the condensing unit 120 are inserted into the screw hole 180a provided in the third blower pipe 134c and the screw hole 180b provided in the first tube plate 136. And it is fixed with screws. Further, the fourth blower pipe 134d and the condensing unit 120 are inserted into a screw hole 181a provided in the fourth blower pipe 134d and a screw hole 181b provided in the second tube plate 137, and screwed. Stopped and fixed. For this reason, the condensing pipe 135 and the 3rd ventilation pipe 134c are connected via the 1st tube board 136, and the condensation pipe 135 and the 4th ventilation pipe 134d are connected via the 2nd pipe plate 137. It will be. The first tube plate 136 and the second tube plate 137 are stainless steel members, and the third blower tube 134c and the fourth blower tube 134d are made of polypropylene.

  Copper has a property of higher thermal conductivity than stainless steel. However, copper may cause copper damage that is accelerated in deterioration when the temperature is high in contact with polypropylene.

  In the said embodiment, the 3rd ventilation pipe 134c and the 4th ventilation pipe 134d which are comprised with a polypropylene, and the stainless steel 1st tube plate 136 and the 2nd tube plate 137 are connected, respectively. For this reason, compared with the case where the 1st tube sheet and the 2nd tube sheet are copper, a possibility that copper damage may occur can be reduced.

  Thereby, the durability of the condenser 139 can be improved.

(5)
In the above embodiment, the inner diameter of the condensing tube 135 is 8.5 mm. If the inner diameter of the condensing tube is reduced in order to reduce the size of the condenser, the condensed water forms a film by the surface tension at the lower end of the condensing tube, which may hinder the air flow inside the condensing tube. As a result of intensive studies, the inventor of the present application has found that when the inner diameter of the condensing tube 135 is 8 mm or more, there is less possibility that the air flow in the condensing tube is hindered by the surface tension of the condensed water. For this reason, in this condenser 139, the possibility that condensed water may stay at the lower end portion of the condensing tube due to surface tension can be reduced.

  As a result, the risk of hindering the air flow inside the condensing tube 135 can be reduced.

(6)
In the said embodiment, the common ventilation pipe | tube is formed by blow molding. For this reason, in this condenser 139, a common air duct can be formed easily.

  Moreover, in the 3rd ventilation pipe 134c and the 4th ventilation pipe 134d, opening 134f, 134g for connecting the internal space of the 3rd ventilation pipe 134c, the internal space of the 4th ventilation pipe 134d, and the internal space of the condensation part 120 is provided. The third blower tube 134c and the fourth blower tube 134d are formed by cutting into a predetermined shape. For this reason, inward warping may occur in the openings 134f and 134g of the third air duct 134c and the fourth air duct 134d.

  However, in the said embodiment, the 1st tube board 136 is engage | inserted inside the 3rd ventilation pipe 134c from the opening 134f of the 3rd ventilation pipe 134c. Further, the second tube plate 137 is fitted inside the fourth blower tube 134d from the opening 134g of the fourth blower tube 134d. For this reason, the first tube plate 136 and the second tube plate 137 can correct the warp of the openings 134f and 134g. Further, in the case where inward warping has occurred in the openings 134f and 134g, the adhesion between the third blower tube 134c and the first tube plate 136 can be improved, and the fourth blower tube 134d and the second blower tube 134d can be improved. Adhesion with the tube sheet 137 can be improved.

(7)
In the above embodiment, when the condensing unit 120 is viewed from the front, the condensing pipe 135 of the condensing unit 120 extends from the third blower pipe 134c to the fourth blower pipe 134d so as to be obliquely downward with respect to the vertical direction. In this condenser 139, the condenser pipe 135 extends along the flow direction of the air flowing from the third blower pipe 134c to the fourth blower pipe 134d, so that the air flow from the third blower pipe 134c toward the fourth blower pipe 134d Ventilation resistance can be reduced. Therefore, the pressure loss in the condensation pipe 135 can be reduced.

  Moreover, since the condensing pipe 135 extends obliquely downward, the condensed water can easily flow out from the end of the condensing pipe 135.

  Furthermore, since the condenser pipe 135 is arranged along the flow direction of the air from the third blower pipe 134c to the fourth blower pipe 134d, the air flowing inside the condenser 139 can be easily circulated. Yes. Further, the air flowing from the third blower pipe 134c can be easily distributed evenly to the plurality of condensing pipes 135.

<Modification>
In the above embodiment, the condensing pipe 135 is a copper pipe and has a cylindrical shape. In addition to this configuration, fins for improving heat exchange efficiency may be provided in the condensing tube.

  For example, in a condenser in which plate-like fins are connected so as to extend outward from the outer wall surface of the condensing tube, the fins use the heat of the external air flowing outside the condensing tube and the high-temperature and high-humidity air flowing inside the condensing tube. Can tell. For this reason, heat exchange efficiency can be further improved as compared with a condenser not provided with fins.

  Thereby, the condensation efficiency in the condenser can be further improved.

  Since this invention can improve condensation efficiency, application to a condenser is effective.

32 Heater 31 Adsorption element 33 Second blower (blower)
100 Air conditioner 120 Condensing part (second condensing part)
134 Common air duct (first condensing part)
134c 3rd ventilation pipe (1st flow path)
134d 4th ventilation pipe (2nd flow path)
135 Condensation tube
136 1st tube sheet 137 2nd tube sheet 139 Condenser

Japanese Patent Laid-Open No. 11-304389

Claims (6)

A condenser to be condensed is air, and performs heat exchange between the condensed fluid flowing inside and the condensed fluid flowing outside,
A first condensing part (134) made of resin having a first flow path (134c) through which the fluid to be condensed flows and a second flow path (134d) through which the fluid to be condensed flows;
A plurality of pipes (135) arranged between the first flow path and the second flow path and through which the condensed fluid flowing from the first flow path to the second flow path circulates; A metal second condensing part (120) having a first tube sheet (136) disposed on the upper end side and a second tube sheet (137) disposed on the lower end side of the plurality of tubes;
With
The first tube sheet is provided with a plurality of holes (136a) penetrating in the plate thickness direction,
The tubes are arranged at a predetermined interval and extend downward from the holes.
Condenser (139). The first condensing unit and the plurality of tubes are connected via the first tube plate and the second tube plate,
The condenser according to claim 1. The inner diameter of the tube is 8 mm or more.
The condenser according to claim 1 or 2. The first condensing part is formed by blow molding,
The condenser according to any one of claims 1 to 3. The first flow path is disposed above the second flow path,
The tube extends from the first flow path to the second flow path obliquely downward with respect to the vertical direction.
The condenser according to any one of claims 1 to 4. A heater (32);
An adsorbing element (31) capable of adsorbing moisture;
A blower (33) that discharges moisture from the adsorbing element by applying high-temperature air heated by the heater to the adsorbing element;
The condenser (139) according to any one of claims 1 to 5, wherein the high-temperature air that has passed through the adsorption element flows inside as the fluid to be condensed.
An air conditioner (100) comprising:

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