WO2009153986A1 - Échangeur de chaleur - Google Patents

Échangeur de chaleur Download PDF

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Publication number
WO2009153986A1
WO2009153986A1 PCT/JP2009/002757 JP2009002757W WO2009153986A1 WO 2009153986 A1 WO2009153986 A1 WO 2009153986A1 JP 2009002757 W JP2009002757 W JP 2009002757W WO 2009153986 A1 WO2009153986 A1 WO 2009153986A1
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WO
WIPO (PCT)
Prior art keywords
heat exchanger
air
flow path
fluid
blower
Prior art date
Application number
PCT/JP2009/002757
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English (en)
Japanese (ja)
Inventor
菊池芳正
竹内牧男
岡田一也
清野竜二
Original Assignee
ダイキン工業株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ダイキン工業株式会社 filed Critical ダイキン工業株式会社
Publication of WO2009153986A1 publication Critical patent/WO2009153986A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F6/00—Air-humidification, e.g. cooling by humidification
    • F24F6/02—Air-humidification, e.g. cooling by humidification by evaporation of water in the air
    • F24F6/06—Air-humidification, e.g. cooling by humidification by evaporation of water in the air using moving unheated wet elements

Definitions

  • the present invention relates to a heat exchanger.
  • a resin heat exchanger that cools the fluid to be condensed by performing heat exchange between the flow channel through which the fluid to be condensed flows and the fluid flowing outside the channel.
  • a condenser (corresponding to a heat exchanger) disclosed in Patent Document 1 (Japanese Patent Laid-Open No. 11-304389) includes an upper horizontal pipe, a lower horizontal pipe, and a plurality of condensed fluid passage pipes (flow channels). Equivalent). This condenser is configured such that the fluid to be condensed flowing into the upper horizontal pipe passes through the plurality of fluid to be condensed passages and flows to the lower horizontal pipe.
  • the condenser is provided with a space for allowing the fluid to be heat-exchanged to pass between the adjacent condensed fluid passage pipes. For this reason, 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.
  • an upper horizontal pipe, a lower horizontal pipe, and a plurality of condensed fluid passage pipes are integrally formed by blow molding.
  • a heat exchanger is integrally formed, there is a problem that it is difficult to create a complicated shape or the like. For this reason, when it is going to produce the heat exchanger of a complicated shape in order to improve functionality, such as heat exchange efficiency, there exists a possibility that preparation cost may become high. Then, the subject of this invention is providing the heat exchanger which can suppress production cost, maintaining a high function.
  • the heat exchanger according to the first invention includes a first member in which an outer shell portion and a second flow path portion are integrally formed, and a second member.
  • the outer shell portion has a first flow path space through which the first fluid flows.
  • the 2nd channel part has penetrated the 1st channel space, and has covered the 2nd channel space which flows the 2nd fluid.
  • the second member is joined to the first member so as to cover the first flow path space.
  • the heat exchanger according to the first invention includes a first member in which an outer shell portion and a second flow path portion are integrally formed, and a second member. For this reason, compared with the case where the whole heat exchanger is integrally formed, a complicated shape can be created easily. Therefore, in order to enhance functionality such as heat exchange efficiency, a heat exchanger having a complicated shape can be easily created. As a result, the production cost can be suppressed while maintaining high functionality.
  • the heat exchanger according to the second invention is the heat exchanger according to the first invention, and the second member is arranged on the upstream side in the flow direction of the second fluid.
  • the second member is made of metal. For this reason, compared with the case where the 2nd member is comprised with resin, heat exchange efficiency can be improved.
  • the heat exchanger according to the third invention is the heat exchanger of the first invention or the second invention, and the first member is made of resin.
  • the first member is formed by injection molding. For this reason, compared with the case where it forms by blow molding, a complicated shape can be formed easily.
  • a heat exchanger according to a fourth aspect of the present invention is the heat exchanger according to any one of the first to third aspects, wherein the second flow path portion is provided with fins in a direction orthogonal to the flow direction of the second fluid. It has been. For this reason, compared with the case where the fin is not provided, the heat of the second fluid can be easily transmitted to the first fluid. Thereby, heat exchange efficiency can be improved.
  • a heat exchanger according to a fifth aspect of the present invention is the heat exchanger according to any one of the first to fourth aspects of the present invention, wherein the second flow path space is configured to be larger than the first flow path space. . For this reason, the flow volume of the 2nd fluid which flows through 2nd flow path space can be increased rather than the flow volume of the 1st fluid which flows through 1st flow path space.
  • a heat exchanger according to a sixth aspect of the present invention is the heat exchanger according to any one of the first to fifth aspects, wherein the first fluid is a fluid having a temperature higher than that of the second fluid. For this reason, in this heat exchanger, the first fluid flowing in the first flow path space has a higher temperature than the second fluid flowing in the second flow path space. Therefore, the fluid flowing through the first flow path space can be efficiently condensed.
  • An air conditioner includes a heater, an adsorption element, a blower, and the heat exchanger according to any one of the first to sixth aspects.
  • the adsorption element adsorbs moisture from the air.
  • the blower applies high-temperature air whose temperature has been increased by the heater to the adsorbing element to release moisture from the adsorbing element.
  • the heat exchanger allows high-temperature air that has passed through the adsorption element to flow inside.
  • the heat exchanger causes high-temperature air from which moisture has been released from the adsorption element to flow inside. For this reason, for example, when the second fluid is at a lower temperature than the first fluid, high-humidity air flowing inside the heat exchanger can be efficiently condensed. Thereby, the air can be efficiently dehumidified.
  • the heat exchange efficiency can be improved.
  • a complicated shape can be easily formed.
  • the heat exchange efficiency can be improved.
  • the flow rate of the second fluid flowing through the second flow path space can be increased.
  • the fluid flowing through the first flow path space can be efficiently condensed.
  • air can be efficiently dehumidified.
  • the perspective view of an air harmony machine provided with the heat exchanger concerning the 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 a dehumidification unit The conceptual diagram of a heat exchanger.
  • the conceptual diagram of the 1st member and the 2nd member Sectional drawing of the 2nd flow-path part in the modification (B) of this invention.
  • the heat exchanger according to the present invention is a multi-tube sensible heat exchanger used for heat exchange between a first fluid that is a fluid flowing inside a heat exchanger and a second fluid that is a fluid flowing outside.
  • the air conditioner 100 provided with the heat exchanger 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.
  • 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.
  • the air conditioner 100 includes a main body casing 10, a blower 2, a dehumidifying unit 3, a humidifying unit 4, an air cleaning unit 5, and a control unit 6.
  • 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.
  • the main body casing 10 has a substantially rectangular parallelepiped shape, and houses the blower 2, the dehumidifying unit 3, the humidifying unit 4, the air purifying 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.
  • the blower 2 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 3, 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 3 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 3, the humidifying unit 4 and the blower 2.
  • 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 the lower side of the second blower 33 of the dehumidifying unit 3 during operation.
  • the humidifying unit 4 mainly includes the water storage container 40, the water wheel 42, and the vaporizing unit 41. 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.
  • 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.
  • 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.
  • 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 vaporizing 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.
  • the user can take out the water wheel 42 from the water storage container 40 and clean it.
  • 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 the drive gear 431 and the second gear 423 that rotate by the drive of the drive unit 43.
  • 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.
  • the dehumidifying unit 3 includes an adsorption element 31, a heater 32, a second blower 33, a blower 39, and a drain port 28 (see FIG. 5).
  • 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
  • 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
  • the heater 32 and the second blower 33 are connected to each other by a first blower pipe 34a of the blower 39 so that air can flow. When the second blower 33 is operated, an air flow is formed, and the air flows in the direction shown by the arrow in the first delivery pipe 34a.
  • the blower unit 39 includes common blower tubes 34 a, 34 b, 34 c, 34 d and the heat exchanger 20.
  • the ventilation part 39 is comprised with resin.
  • the common air ducts 34a, 34b, 34c, 34d are composed of a first air duct 34a, a second air duct 34b, a third air duct 34c, and a fourth air duct 34d.
  • 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.
  • 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.
  • the 2nd ventilation pipe 34b contains the fan-shaped part formed so that a part of adsorption
  • the fan-shaped portion has a substantially fan shape when viewed from the front, and is provided at a position sandwiching the same portion of the adsorption element 31 together with the heater 32 described above, and about 1/6 of the front side of the adsorption element 31 is formed. Covering.
  • the second blower pipe 34b can direct almost all of the high-temperature, high-humidity air that has passed through the adsorption element 31 to the heat exchanger 20 without resistance.
  • the third air duct 34c communicates the heat exchanger 20 and the fourth air duct 34d so that air can flow between the heat exchanger 20 and the fourth air duct 34d.
  • the fourth blower pipe 34 d communicates the third blower pipe 34 c and the second blower 33.
  • the air that has passed through the third blower pipe 34c is sucked into the second blower 33 through the fourth blower pipe 34d.
  • FIG. 5 which is a conceptual diagram of the heat exchanger 20 as viewed from the front, the heat exchanger 20 connects the second blower pipe 34 b and the third blower pipe 34 c.
  • the high-temperature high-humidity air that has flowed through the second blower pipe 34b is guided to the third blower pipe 34c while being in contact with the outer wall surfaces of a plurality of second flow path portions 24 described later.
  • the high-temperature and high-humidity air flowing through the second blower pipe 34b is distributed by the plurality of second flow path portions 24, thereby forming a plurality of air flow paths. Further, the distributed air merges and is guided to the third blower pipe 34c.
  • the heat exchanger 20 is comprised from the 1st member 21 and the 2nd member 22 which are formed by injection molding, as shown in FIG. Below, the structure of the heat exchanger 20 is demonstrated.
  • the first member 21 includes an outer shell part 23 and a second flow path part 24.
  • the outer shell portion 23 is mainly composed of an upper surface portion 23a, a side surface portion 23b, a bottom surface portion 23c, and a back surface portion 23d, and has a structure in which the front side in FIG. 6 is open. Further, the area of the upper surface portion 23a is formed to be smaller than the area of the bottom surface portion 23c. For this reason, in the heat exchanger 20, the left end portion of the upper surface portion 23a and the second blower pipe 34b in FIG.
  • the outer shell portion 23 has a first flow path space S1 through which air (corresponding to the first fluid) flowing from the second blower pipe 34b to the third blower pipe 34c flows.
  • the 2nd flow path part 24 is exhibiting the cylindrical shape as shown in FIG. 6, and is provided so that the 1st flow path space S1 may be penetrated. Further, the second flow path portion 24 covers the second flow path space S2 through which a part of the external air (corresponding to the second fluid) passes. Furthermore, the second flow path portions 24 are arranged at a predetermined interval.
  • the outer shell portion 23 and the second flow path portion 24 are integrally formed.
  • the second member 22 is a plate-like member having substantially the same shape as the back surface portion 23 d of the first member 21, and has substantially the same shape as the cross section of the second flow path portion 24 at a position facing the second flow path portion 24. An opening 22a is provided. Moreover, the 2nd member 22 is joined to the 1st member 21 so that 1st flow-path space S1 may be covered.
  • the second flow path space S2 is configured to be larger than the first flow path space S1.
  • the high-temperature and high-humidity air flowing inside the heat exchanger 20 flows while contacting the outer wall surface of the second flow path portion 24.
  • the external air that passes through the inside of the second flow path portion 24 exchanges heat with the high-temperature and high-humidity air that flows inside the heat exchanger 20, and flows inside the heat exchanger 20 without being mixed with each other. Take heat away from the air. Therefore, the high-temperature and high-humidity air that has contacted the outer wall surface of the second flow path portion 24 is cooled, and condensation occurs on the outer wall surface of the second flow path portion 24.
  • 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
  • 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
  • a space for allowing the fluid to be heat exchanged to pass is provided between the adjacent condensed fluid passage pipes. For this reason, 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.
  • the heat exchanger 20 includes the first member 21 in which the outer shell portion 23 and the second flow path portion 24 are integrally formed, and the second member 22. For this reason, compared with the case where the whole heat exchanger is integrally formed, a complicated shape can be created easily. Therefore, in order to enhance functionality such as heat exchange efficiency, a heat exchanger having a complicated shape can be easily created.
  • the ventilation part 39 which has the heat exchanger 20 is comprised with resin.
  • the 1st member 21 and the 2nd member 22 which comprise the heat exchanger 20 are formed by injection molding. For this reason, compared with the case where a heat exchanger is formed by blow molding, a complicated shape can be formed easily.
  • the second flow path space S2 is configured to be larger than the first flow path space S1. For this reason, the flow volume of the external air which flows through 2nd flow-path space S2 can be increased rather than the flow volume of the high temperature high-humidity air which flows through 1st flow-path space S1.
  • the high-temperature and high-humidity air flowing through the first flow path space S1 can be efficiently condensed. Moreover, even if there is much flow volume of the external air which flows through 2nd flow-path space S2, pressure loss can be suppressed.
  • the fluid flowing through the first flow path space S1 is high-temperature and high-humidity air that has flowed through the second air blowing pipe 34b.
  • external air having a temperature lower than that of the fluid flowing through the first flow path space S1 flows in the second flow path space S2. For this reason, the air flowing through the first flow path space S1 has a higher temperature than the air flowing through the second flow path space S2. Therefore, the high-temperature and high-humidity air flowing through the first flow path space S1 can be efficiently condensed.
  • the 1st member 21 and the 2nd member 22 which comprise the heat exchanger 20 are formed with resin. It replaces with this and the member arrange
  • a heat exchanger a case where the second member is arranged upstream of the external air flow will be described.
  • the heat exchanger is formed by joining a first member made of resin formed by injection molding and a second member formed of a metal material (for example, aluminum). In this heat exchanger, heat exchange efficiency can be improved by such a configuration as compared with the case where the second member is made of resin.
  • the 2nd flow path part 24 is exhibiting the cylindrical shape.
  • the second flow path portion may be provided with fins for improving heat exchange efficiency.
  • a plurality (eight in this case) of plate-like fins 124 a are radially connected so as to extend outward from the outer wall surface of the second flow path portion 124.
  • this fin 124a is provided in the direction orthogonal to the flow direction of the 2nd fluid which flows through 2nd flow-path space S2.
  • the plurality of fins 124a can transmit the heat of the external air flowing through the second flow path space S2 to the high-temperature and high-humidity air flowing through the first flow path space.
  • heat exchange efficiency can be improved.
  • the condensation efficiency of the first fluid can be improved.
  • the air that has flowed through the second blower pipe flows in the order of the pre-condensation air flow path, the plurality of air flow paths, and the post-condensation air flow path, and is guided to the second blower pipe.
  • the air flowing from the pre-condensation air flow path is cooled by taking heat quantity while flowing through the plurality of air flow paths, and moisture is condensed. And the cooled air is led to the 3rd ventilation pipe through the air channel after condensation.
  • Such a heat exchanger has a complicated structure because a plurality of flow paths are provided. For this reason, there is a possibility that the number of parts increases and the production cost increases. However, since the number of parts can be reduced by configuring the heat exchanger with two members having the same molding direction, the production cost can be reduced.
  • external air is used to cool the air flowing through the heat exchanger 20.
  • the air after passing through the adsorption element may be used as a fluid for cooling the air flowing inside the heat exchanger. This adsorption element can adsorb moisture in the air more efficiently as the temperature of the passing air is lower.
  • the air after passing through the second flow path part may be used as air flowing inside the heat exchanger.
  • the air that has passed through the second flow path portion is deprived of heat from the air flowing inside the heat exchanger, and thus has a higher temperature than external air. For this reason, the heat quantity of a heater can be suppressed by utilizing the air which passed the 2nd flow path part as the air which flows through the inside of a heat exchanger.
  • the heat exchanger according to the present invention can reduce the production cost while maintaining high functionality. For this reason, application to a heat exchanger is effective.

Abstract

L'invention concerne un échangeur (20) de chaleur comportant un premier élément (21) comprenant une partie (23) de coque extérieure et une deuxième partie (24) de passage d’écoulement formées de façon intégrée, et un deuxième élément (22). La partie (23) de coque extérieure renferme un premier espace (S1) formant passage d’écoulement à travers lequel circule de l’air à haute température et à fort taux d’humidité. La deuxième partie (24) de passage d’écoulement traverse le premier espace (S1) formant passage d’écoulement et recouvre un deuxième espace (S2) formant passage d’écoulement à travers lequel circule de l’air extérieur. Le deuxième élément (22) est joint au premier élément (21) de façon à recouvrir le premier espace (S1) formant passage d’écoulement.
PCT/JP2009/002757 2008-06-19 2009-06-17 Échangeur de chaleur WO2009153986A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2008-160847 2008-06-19
JP2008160847A JP4466768B2 (ja) 2008-06-19 2008-06-19 熱交換器

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WO2009153986A1 true WO2009153986A1 (fr) 2009-12-23

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WO (1) WO2009153986A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06235595A (ja) * 1992-11-30 1994-08-23 Daikin Ind Ltd 加湿エレメント及びその製造方法
WO2007013483A1 (fr) * 2005-07-26 2007-02-01 Matsushita Electric Industrial Co., Ltd. Déshumidificateur

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06235595A (ja) * 1992-11-30 1994-08-23 Daikin Ind Ltd 加湿エレメント及びその製造方法
WO2007013483A1 (fr) * 2005-07-26 2007-02-01 Matsushita Electric Industrial Co., Ltd. Déshumidificateur

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JP2010002117A (ja) 2010-01-07

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