JP2018036000A - Air blower with heat exchange function, and air conditioner using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air blower with a heat exchange function capable of suppressing enlargement and complexity of a motor.SOLUTION: In an air blower 100, since a rotor 53 can obtain rotational force outside a stator 51, it is unnecessary to directly transmit rotational force to a shaft of the rotor 53, and a heat transfer pipe 63 where cooling water or refrigerant flows can be employed as a shaft; and to both ends of the heat transfer pipe 63 as the shaft, a heat source side unit is connected through a rotary joint 71, thereby attaining an air blower with a heat exchange function where cooling water or refrigerant circulates.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a blower with a heat exchange function having both a heat exchange function and a blower function, and an air conditioner using the blower.

  Conventionally, as a device for promoting heat exchange between a heat medium that passes through the inside of a heat exchanger and air that passes through the outside of the heat exchanger, a blower that rotates an impeller with a motor has been widely used.

  On the other hand, in recent years, research has also been conducted on a fan with a heat exchange function that forms a flow path through which a heat medium can flow inside an impeller and uses the impeller itself as a heat exchanger.

  For example, Patent Document 1 (Japanese Patent Application Laid-Open No. 2011-2187) discloses a heat exchange fan including a flow path through which a refrigerant can pass inside a blade portion. Specifically, one end portion of the rotating shaft of the blade portion is inserted into the central portion of the motor, and the refrigerant passes through the shaft and is divided into the refrigerant flow path inside the blade portion.

  However, in the above heat exchange fan, it is necessary to transmit the rotational force directly to the shaft of the impeller to rotate the impeller. In such a case, since the rotational load acts directly on the shaft, the refrigerant is simply circulated. When a tube is used as the shaft, it cannot withstand the rotational load. Therefore, the strength of the shaft for ensuring durability and the accompanying increase in size and complexity of the motor are caused.

  The subject of this invention is providing the air blower with a heat exchange function which suppressed the enlargement and complication of a motor.

  The blower with a heat exchange function according to the first aspect of the present invention includes a stator, a rotor, and an impeller. The stator is annular and has a coil. The rotor is disposed outside the stator and receives a rotational force. The impeller is provided on the rotor and rotates together with the rotor. The impeller has an inlet portion for introducing a fluid, a flow path portion for flowing the fluid, and an outlet portion for discharging the fluid. And the communication part which connects an inlet part or an outlet part, or an inlet part or an outlet part, and the heat source side of a fluid is arrange | positioned in the penetration space enclosed by the cyclic | annular stator.

  In this blower with a heat exchange function, the rotor obtains a rotational force on the outside of the stator by the above configuration, and therefore it is not necessary to directly transmit the rotational force to the rotor shaft.

  Moreover, since the communication part which connects an inlet part or an outlet part, or an inlet part or an outlet part, and the heat-source side of a fluid is arrange | positioned in the penetration space enclosed by the cyclic | annular stator, they are on the axis | shaft of an impeller. Although arranged, the load acting on the load is limited to the load specific to the communication portion and the friction load regardless of the rotational load of the impeller, and is almost stable.

  Therefore, it is not necessary to particularly increase the strength of the shafts at both ends of the impeller, and a pipe or the like through which a fluid flows can be employed as the shaft, and finally the increase in size and complexity of the motor can be suppressed.

  The blower with a heat exchange function according to the second aspect of the present invention is a blower with a heat exchange function according to the first aspect, and the flow path part includes a pipe connecting the inlet part and the outlet part.

  In this blower with a heat exchange function, a pipe can be adopted as both end shafts of the impeller due to the effect of the first aspect, so that the flow path is located in the intermediate region of the impeller and connects the inlet portion and the outlet portion. A pipe can be adopted for the part. Therefore, the cost can be reduced by adopting a general-purpose standardized tube.

  The blower with a heat exchange function according to the third aspect of the present invention is a blower with a heat exchange function according to the first aspect or the second aspect, wherein the flow path part is disposed between the inlet part and the outlet part, The hollow blade group which comprises the blade | wing of a hollow structure is included.

  In this blower with a heat exchange function, fluid flows inside the blade group, and the blade group itself rotates around its axis, so that heat exchange between the fluid flowing inside the blade group and the air flowing outside the blade group is promoted. The

  A blower with a heat exchange function according to a fourth aspect of the present invention is a blower with a heat exchange function according to a third aspect, wherein the flow path portion further includes a fluid diverting hollow member and a fluid collecting hollow member. . The fluid diverting hollow member is disposed between the inlet portion and the hollow blade group, and the fluid introduced from the inlet portion is branched into a plurality of parts to flow into the plurality of blades of the hollow blade group. The fluid collecting hollow member is disposed between the hollow blade group and the outlet portion, collects the fluid flowing from the hollow blade group, and flows the fluid to the outlet portion.

  In this blower with heat exchange function, the method of once diverting or collecting the fluid in the hollow member is more in terms of the number of parts and man-hours than the method of individually communicating the inlet portion or the outlet portion and each blade of the blade group. Is reasonable.

  A blower with a heat exchange function according to a fifth aspect of the present invention is a blower with a heat exchange function according to any one of the first to fourth aspects, wherein the communicating portion rotates relative to the fluid heat source side. It is the rotary joint which connects the inlet part or outlet part which performs.

  In this blower with a heat exchange function, the fluid can be circulated to the inlet and outlet of the rotating impeller by adopting the rotary joint.

  A blower according to a sixth aspect of the present invention is an air conditioner including the blower with a heat exchange function according to any one of the first to fifth aspects.

  In this air conditioner, further downsizing of the air conditioner can be realized by employing a blower with a heat exchange function that has both a blower function and a heat exchange function.

  In the blower with a heat exchange function according to the first aspect of the present invention, the rotor obtains a rotational force on the outside of the stator by the above-described configuration, and therefore it is not necessary to directly transmit the rotational force to the rotor shaft.

  Moreover, since the communication part which connects an inlet part or an outlet part, or an inlet part or an outlet part, and the heat-source side of a fluid is arrange | positioned in the penetration space enclosed by the cyclic | annular stator, they are on the axis | shaft of an impeller. Although arranged, the load acting on the load is limited to the load specific to the communication portion and the friction load regardless of the rotational load of the impeller, and is almost stable.

  Therefore, it is not necessary to particularly increase the strength of the shafts at both ends of the impeller, and a pipe or the like through which a fluid flows can be employed as the shaft, and finally the increase in size and complexity of the motor can be suppressed.

  In the blower with a heat exchange function according to the second aspect of the present invention, because of the effect of the first aspect, a pipe can be adopted as both end shafts of the impeller, so that it is located in an intermediate region of the impeller, and has an inlet portion and an outlet. A pipe can also be employed in the flow path portion communicating with the portion. Therefore, the cost can be reduced by adopting a general-purpose standardized tube.

  In the blower with a heat exchange function according to the third aspect of the present invention, the fluid flows inside the blade group and the blade group itself rotates around the axis, so the fluid flowing inside the blade group and the air flowing outside the blade group Heat exchange with is promoted.

  In the blower with a heat exchange function according to the fourth aspect of the present invention, the method of once dividing or collecting the fluid in the hollow member rather than the method of individually communicating the inlet portion or the outlet portion and each blade of the blade group However, it is reasonable in terms of the number of parts and man-hours.

  In the blower with a heat exchange function according to the fifth aspect of the present invention, the fluid can be circulated to the inlet and outlet of the rotating impeller by employing the rotary joint.

  In the blower according to the sixth aspect of the present invention, by adopting a blower with a heat exchange function that has both a blower function and a heat exchange function, further downsizing of the air conditioner can be realized.

The block diagram of the air conditioner using the air blower with a heat exchange function which concerns on 1st Embodiment of this invention. The external view when a use side unit is seen from the blower outlet lower part. FIG. 3 is an external view of the usage-side unit when viewed from above the suction port. The sectional side view of a use side unit. The perspective view of the air blower with a heat exchange function and the support frame which supports it. Sectional drawing of the air blower with a heat exchange function. The front view of the impeller which removed the 1st shaft and the 2nd shaft. Sectional drawing of the said impeller when an impeller is cut | disconnected by the AA line of FIG. Sectional drawing of a braid | blade. Sectional drawing of the air blower which concerns on a 1st modification. Sectional drawing of the air blower which concerns on the 1st modification which changed the heat exchanger tube. Sectional drawing of the air blower which concerns on a 2nd modification. Sectional drawing of the air blower which concerns on the 1st modification which changed the heat exchanger tube. The block diagram of the air conditioner using the air blower with the heat exchange function which concerns on 2nd Embodiment of this invention.

  Embodiments of the present invention will be described below with reference to the drawings. The following embodiments are specific examples of the present invention and do not limit the technical scope of the present invention.

<First Embodiment>
(1) Overview of Air Conditioner 1 FIG. 1 is a configuration diagram of an air conditioner 1 using a blower 100 with a heat exchange function according to a first embodiment of the present invention. In FIG. 1, the air conditioner 1 includes a heat source side unit 10 and a use side unit 30.

  The heat source side unit 10 supplies cooling water to the use side unit 30. The use side unit 30 is connected to the heat source side unit 10 by the pipe 20, and the cooling water generated by the heat source side unit 10 reaches the use side unit 30 through the pipe 20, absorbs heat, and again is the pipe 20. It returns to the heat source side unit 10 through.

(1-1) Heat source side unit 10
The heat source side unit 10 includes a first pump 11, a second pump 12, a heat exchanger 15, and a collective cooler 17. One or two or more heat exchangers 15 are provided in the heat source side unit 10, and a first pump 11 and a second pump 12 are installed for each heat exchanger 15.

  The cooling water whose temperature has risen returned from the pipe 20 is drawn into the heat exchanger 15 by the first pump 11 and cooled. The cooled cooling water is sent again to the pipe 20 by the first pump 11. The pipe 20 and the first pump 11 are connected via a water supply header 19a. Moreover, the water which returned from the piping 20 flows into the heat exchanger 15 through the header 19b for water return.

  The heat exchanger 15 is connected to the collective cooler 17 by the cooling water pipe 16, and the cooling water is circulated between the heat exchanger 15 and the collective cooler 17 by the second pump 12.

  Therefore, the cooling water whose temperature has risen due to the exhaust heat from the heat exchanger 15 is sent to the collective cooler 17 to be cooled to a necessary temperature, and returns to the heat exchanger 15 again.

(1-2) User-side unit 30
FIG. 2A is an external view of the usage-side unit 30 when viewed from below the outlet 31b. FIG. 2B is an external view of the usage-side unit 30 as viewed from above the suction port 31a. Further, FIG. 2C is a side sectional view of the usage-side unit 30.

  2A, 2B, and 2C, the usage-side unit 30 has an outer shell formed by a main body casing 31 having a suction port 31a and a blowout port 31b. As shown in FIGS. 2A and 2B, a suction port 31a is provided on the top surface of the main body casing 31, and an air outlet 31b is formed on the lower surface. The air outlet 31b is opened and closed by a flap 32 that swings when driven by a motor.

  As shown in FIG. 2C, the blower 100 is mounted in the main body casing 31. In the present embodiment, the blower 100 corresponds to a cross flow fan (JIS B 0132) through which air passes in a cross section perpendicular to the axis of the impeller 60.

  FIG. 3 is a perspective view of the blower 100 and the support frame 78 that supports it. The support frame 78 is a structure formed in a substantially L shape so as to cover the rear side and the lower side of the impeller 60.

  The impeller 60 also serves as a heat exchanger through which a heat medium can flow, and the blower 100 is a cross-flow fan with a heat exchange function. Hereinafter, the blower 100 will be described.

(2) Configuration of Blower 100 FIG. 4 is a cross-sectional view of the blower 100. In FIG. 4, the blower 100 is a cross flow fan, and includes a motor 50 and an impeller 60 driven by the motor 50. The impeller 60 is formed in a long and thin cylindrical shape, and is arranged so that the long axis is horizontal.

(2-1) Motor 50
The motor 50 is an outer rotor type motor and includes a stator 51 and a rotor 53.

(2-1-1) Stator 51
The stator 51 has a cylindrical portion 511 that stores an iron core, a coil, and the like for generating a magnetic field, and is arranged with a certain gap from the inner peripheral surface of the rotor 53. The stator 51 further includes a through space 510 that is a cylindrical space that penetrates the center of the columnar portion 511 in the axial direction.

(2-1-2) Rotor 53
The rotor 53 is made of a resin material containing minute magnet particles, and rotates by a magnetic force generated from the stator 51.

  The rotor 53 has a cylindrical wall 531 having an inner diameter slightly larger than the outer diameter of the stator 51, and the column portion 511 of the stator 51 is fixed in a space surrounded by the cylindrical wall 531. Arranged with a gap. That is, the rotor 53 is disposed on the radially outer side of the stator 51.

(2-2) Impeller 60
As shown in FIG. 4, the impeller 60 includes a first end plate 601, a second end plate 602, a fin plate 603, a first shaft 611, a second shaft 612, a heat transfer tube 63, and a blade 64.

  FIG. 5 is a front view of the impeller 60 with the first shaft 611 and the second shaft 612 removed. Hereafter, each part is demonstrated using FIG.4 and FIG.5.

(2-2-1) First end plate 601 and second end plate 602
The first end plate 601 and the second end plate 602 are disk-shaped plates disposed on both sides of the cylindrical impeller 60, and are formed from a highly rigid metal, for example, a steel plate. Of course, you may shape | mold with resin. The rotor 53 of the motor 50 is coaxially disposed on the first end plate 601 and mechanically connected.

(2-2-2) Fin plate 603
The fin plate 603 is a disk-shaped plate disposed between the first end plate 601 and the second end plate 602, and is formed of a metal having good thermal conductivity, for example, aluminum or an aluminum alloy. In the present embodiment, 19 fin plates 603 are coaxially arranged at equal intervals between the first end plate 601 and the second end plate 602.

(2-2-3) First shaft 611
The first shaft 611 is disposed on the rotation axis of the first end plate 601 and is connected to the first end plate 601. In the present embodiment, the first shaft 611 is inserted into the through space 510 of the stator 51 and is pivotally supported outside the stator 51.

  Further, the first shaft 611 is formed with a through hole penetrating the center along the axis, and the inside thereof is threaded in advance.

  The first shaft 611 is rotatably held on the support frame 78 side, and serves as a rotation axis when the impeller 60 rotates.

(2-2-4) Second shaft 612
The second shaft 612 is disposed on the rotation axis of the second end plate 602 and is connected to the second end plate 602. The second shaft 612 is also formed with a through-hole penetrating the center along the axis, and the inside thereof is threaded in advance.

  The second shaft 612 is rotatably held on the support frame 78 side, and serves as a rotation axis when the impeller 60 rotates.

(2-2-5) Heat transfer tube 63
The heat transfer tube 63 is a tube disposed so as to pass through the respective centers of the first end plate 601, the second end plate 602, the fin plate 603, the first shaft 611, and the second shaft 612, and the inside thereof is a heat medium. For example, a fluid such as water flows.

  The coupling between the heat transfer tube 63 and the first end plate 601, the second end plate 602, the fin plate 603, the first shaft 611, and the second shaft 612 is, for example, in advance, the first end plate 601 and the second end plate 602. A through hole slightly larger than the outer diameter of the heat transfer tube 63 is provided in the center of each of the fin plate 603, the first shaft 611, and the second shaft 612, and the heat transfer tube 63 is passed through these holes. The connection is completed by expanding 63.

(2-2-6) Blade 64
The blade 64 is a blade that extends vertically from the first end plate 601 toward the second end plate 602, passes through the fin plate 603, and reaches the second end plate 602.

  6 is a cross-sectional view of the impeller 60 when the impeller 60 is cut along the line AA in FIG. In FIG. 6, the plurality of blades 64 are arranged along the outer peripheral edge of the fin plate 603 so as to surround the center at regular intervals.

  Since the blade 64 is covered with the fin plate 603 on the side surface in the axial direction, there is no inflow of air from the axial direction even when rotating in the direction of the solid arrow B in FIG. 6, and the air is perpendicular to the axis of the impeller 60. Pass through in the cross section (see dashed arrow).

  FIG. 7 is a cross-sectional view of the blade 64. In FIG. 7, the blade 64 has a hollow structure. Of course, the blade 64 may have a solid structure, but in this embodiment, the blade 64 has a hollow structure to reduce the weight.

(2-3) Rotary joint 71
In FIG. 4, the rotary joint 71 is a member that transfers the heat medium from the stationary part to the rotating part, and includes a joint housing 711 corresponding to the stationary part and a joint shaft 713 corresponding to the rotating part. A part of the joint shaft 713 is rotatably held by a bearing (not shown) in the joint housing 711.

(2-3-1) Joint housing 711
A flow path 711 a is formed in the joint housing 711. The joint housing 711 is formed with a flow port 711b that joins the flow path 711a from the side. The circulation port 711b is connected to the heat source unit 10 via the pipe 20, and the heat medium enters and exits.

(2-3-2) Joint shaft 713
The joint shaft 713 is formed with a cylindrical flow path 713a concentric with the rotation axis. Since the distal end portion of the joint shaft 713 is connected to the end portion of the first shaft 611, the distal end portion of the joint shaft 713 is threaded in advance.

  Therefore, the connection between the distal end portion of the joint shaft 713 and the end portion of the first shaft 611 is completed by screwing the distal end portion of the joint shaft 713 into the inside of the through hole of the first shaft 611.

  Similarly, the connection between the tip of the joint shaft 713 and the end of the second shaft 613 is completed by screwing the tip of the joint shaft 713 into the inside of the through hole of the second shaft 612.

(3) Operation of the blower 100 When the stator 51 of the motor 50 is energized, the rotor 53 rotates, and the impeller 60 fixed coaxially to the rotor 53 also rotates. As the impeller 60 rotates, the blade 64 takes in ambient air.

  The taken-in air passes through the heat transfer pipe 63 penetrating the center of the impeller 60 and the surface of the fin plate 603 joined to the heat transfer pipe 63, and passes through in a cross section perpendicular to the axis of the impeller 60.

  In FIG. 1, the cooling water as the heat medium reaches the use side unit 30 from the heat source side unit 10 via the pipe 20. In FIG. 4, the cooling water enters from one rotary joint 71 and flows through the heat transfer pipe 63.

  When the cooling water passes through the heat transfer pipe 63, heat exchange is performed with the air passing through the impeller 60 through the heat transfer pipe 63 and the fin plate 603. The air cooled by the heat exchange is blown out from the use side unit 30 to cool the surrounding space.

  On the other hand, the cooling water whose temperature has been increased by heat exchange returns from the other rotary joint 71 to the heat source unit 10 via the pipe 20.

(4) Features of the first embodiment (4-1)
In the blower 100, since the rotor 53 obtains a rotational force outside the stator 51, it is not necessary to transmit the rotational force directly to the shaft of the rotor 53.

(4-2)
Further, since the inlet portion 61A and the outlet portion 61B are arranged in the through space 510 surrounded by the annular stator, the load acting on the impeller 60 is not limited to the impeller 60, although they are arranged on the axis of the impeller 60. Regardless of the rotational load of 60, the load is limited to the load inherent to the rotary joint 71 and the friction load, and is almost stable.

  In the present embodiment, the inlet portion 61A and the outlet portion 61B are disposed in the through space 510 surrounded by the annular stator, but the present invention is not limited to this, and the rotary joint 71 is the annular stator. You may arrange | position in the penetration space 510 enclosed by.

(4-3)
Therefore, it is not necessary to particularly increase the strength of the shafts at both ends of the impeller 60, and the heat transfer pipe 63 and the like through which cooling water flows can be used as a shaft. By adopting a general-purpose standard product pipe, the cost can be reduced. Can be planned. Ultimately, the increase in size and complexity of the motor can be suppressed.

<First Modification>
FIG. 8A is a cross-sectional view of a blower 100A according to a first modification. 8A, the difference between the blower 100A and the blower 100 of FIG. 4 is that the cooling water also flows inside the blade 64.

(1) Configuration Therefore, instead of the first end plate 601 and the second end plate 602 of the blower 100, a first end plate 62A and a second end plate 62B are provided.

  Further, instead of the heat transfer tube 63 of the blower 100, a heat transfer tube 63A is provided. Further, a blade 64 </ b> A is provided instead of the blade 64 of the blower 100.

  The other members are the same as those of the blower 100, and thus the same reference numerals as those shown in FIG. 4 are used and the description thereof is omitted. Here, the first end plate 62A, the second end plate 62B, the blade 64A, and the transmission are omitted. The heat pipe 63A will be described.

(1-1) First end plate 62A, second end plate 62B
The first end plate 62A and the second end plate 62B are disk-shaped hollow members disposed on both sides of the impeller 60, and are formed of a metal having high thermal conductivity, for example, aluminum or an aluminum alloy.

  At the center of the first end plate 62A, a through hole is provided to fit the first pipe 631 and the second pipe 632 of the heat transfer pipe 63A. In addition, a through hole is provided at the center of the second end plate 62B to fit the second tube 632 and the third tube 633 of the heat transfer tube 63A.

  The first end plate 62A is provided with a plurality of blade insertion holes into which one end of the blade 64 is fitted so as to surround the center at regular intervals along the outer peripheral edge thereof. Similarly, the second end plate 62B is also provided with a plurality of blade insertion holes into which the other ends of the blades 64 are fitted so as to surround the center at regular intervals along the outer peripheral edge thereof.

  Further, the rotor 53 of the motor 50 is coaxially disposed on the first end plate 62A and mechanically connected thereto.

(1-2) Heat transfer tube 63A
The heat transfer tube 63 </ b> A includes a first tube 631, a second tube 632, and a third tube 633.

(1-2-1) First pipe 631
The first pipe 631 passes through the first shaft 611 and reaches the first end plate 62A. One end of the first pipe 631 is joined to the first end plate 62A so as to be exposed in the hollow portion 62Aa of the first end plate 62A.

  As a joining method, for example, a method of inserting one end of the first pipe 631 into the through hole at the center of the first end plate 62A until it is exposed to the hollow portion 62Aa and brazing in that state is adopted.

(1-2-2) Second pipe 632
The second pipe 632 connects the first end plate 62A and the second end plate 62B. One end of the second tube 632 is joined to the first end plate 62A so as to be exposed in the hollow portion 62Aa of the first end plate 62A, and the other end of the second tube 632 is inserted into the hollow portion 62Ba of the second end plate 62B. It is joined to the second end plate 62B so as to be exposed.

  As a joining method, one end of the second tube 632 is inserted into the central through hole of the first end plate 62A until it is exposed to the hollow portion 62Aa, and the second tube 632 is inserted into the central through hole of the second end plate 62B. A method of inserting the other end until it is exposed to the hollow portion 62Ba and brazing in that state is employed.

(1-2-3) Third tube 633
The third tube 633 protrudes from the second end plate 62B and penetrates the second shaft 612. One end of the third tube 633 is joined to the second end plate 62B so as to be exposed in the hollow portion 62Ba of the second end plate 62B.

  As a joining method, similarly to the case of the first tube 631, a method of inserting one end of the third tube 633 into the through hole at the center of the second end plate 62B until it is exposed to the hollow portion 62Ba, and brazing in that state. Is adopted.

(1-3) Blade 64A
The blade 64A has the same shape as the blade 64 shown in FIG. 7, and has a hollow structure. However, in order to give a heat exchange function by circulating a heat medium inside, it is extruded with a metal having high thermal conductivity, for example, aluminum or an aluminum alloy.

  One end of the blade 64A is joined to the first end plate 62A so as to be exposed in the hollow portion 62Aa of the first end plate 62A. The other end of the blade 64A is joined to the second end plate 62B so as to be exposed in the hollow portion 62Ba of the second end plate 62B.

  As a joining method, a method of inserting one end of the blade 64 into the blade insertion hole of the first end plate 62A until it is exposed to the hollow portion 62Aa and brazing in that state is adopted. Similarly, a method is adopted in which the other end of the blade 64A is inserted into the blade insertion hole of the second end plate 62B until it is exposed to the hollow portion 62Ba and brazed in that state.

(2) Operation of the blower 100A The operation of the blower 100A configured as described above will be described. In addition, since the difference with the operation | movement of the air blower 100 is how to flow the cooling water which is a heat medium, only this difference is demonstrated.

  In FIG. 8A, the cooling water enters from one rotary joint 71 and flows through the first pipe 631 to the hollow portion 62Aa of the first end plate 62A. In addition to the cooling water pressure, the cooling water fills the hollow portion 62Aa to every corner by the centrifugal force generated by the rotation of the first end plate 62A. Thereafter, the cooling water travels toward the second end plate 62B via the second pipe 632 and the insides of the plurality of blades 64A.

  Since the blade 64A itself is rotating, heat quantity of the air flow is lost to the cooling water by heat exchange between the cooling water passing through the blade 64A and the air flow generated by the rotation of the blade 64A. Further, when the cooling water passes through the second pipe 632, heat exchange is performed with the air flow generated by the rotation of the blade 64 </ b> A via the second pipe 632 and the fin plate 603. Thus, the air cooled by heat exchange is blown out from the use side unit 30 to cool the surrounding space.

  The cooling water reaches the second end plate 62B while exchanging heat. The hollow portion 62Ba of the second end plate 62B is filled with the cooling water whose temperature has been increased by heat exchange, but gathers at the center by the pressure of the subsequent cooling water, flows to the third pipe 633 of the heat transfer pipe 63A, and receives another Go out of rotary joint 71.

(3) Other Configurations In the first modified example, the first end plate 62A and the second end plate 62B are connected by the second pipe 632 so that the cooling water can be circulated. When there is an influence on the partial flow rate to the blade 64, only the second pipe 632 may be blocked as shown in FIG. 8B.

(4) Features of the First Modification The first modification has the following features in addition to the features of the first embodiment.

(4-1)
In the blower 100A, the cooling water flows inside the blade 64A group, and the blade 64A group itself rotates around the axis, so that heat exchange between the cooling water flowing inside the blade 64A group and the air flowing outside the blade 64A group is performed. Promoted.

(4-2)
Moreover, in the blower 100A, since the cooling water is once divided in the first end plate 62A and then the cooling water is collected in the second end plate 62B, for example, the [inlet portion 61A or the outlet portion] It is more rational in terms of the number of parts and the number of man-hours than the method of individually communicating 61B and each blade of the blade 64A group].

<Second Modification>
FIG. 9A is a cross-sectional view of a blower 100B according to a second modification. 9A, the difference between the blower 100B and the blower 100B of FIG. 8A is that the cooling water also flows inside the fin plate.

(1) Configuration Therefore, a hollow fin plate 65 is provided instead of the fin plate 603 of the blower 100B.

  Further, a heat transfer tube 63B is provided instead of the heat transfer tube 63A of the blower 100B. Further, a blade 64B is provided instead of the blade 64A of the blower 100A. Further, a connection plate 66 is newly added.

  The other members are the same as those of the blower 100A, and thus the same reference numerals as those shown in FIG. 8A are attached and description thereof is omitted. Here, the hollow fin plate 65, the heat transfer tube 63B, the blade 64B, and the connection plate 66 are described. explain.

(1-1) Hollow fin plate 65
The hollow fin plate 65 is a disk-shaped (short cylindrical shape) hollow member disposed between the first end plate 62A and the second end plate 62B, and is a metal having good thermal conductivity, such as aluminum or aluminum alloy. It is molded with. In the second modification, 19 hollow fin plates 65 are coaxially arranged at equal intervals between the first end plate 62A and the second end plate 62B.

  In the center of the hollow fin plate 65, a through hole is provided to fit the second tube 632 of the heat transfer tube 63B. The hollow fin plate 65 is provided with a plurality of blade insertion holes into which one end of the blade 64B is fitted so as to surround the center at regular intervals along the outer peripheral edge thereof.

(1-2) Heat transfer tube 63B
The heat transfer tube 63 </ b> B includes a first tube 631, a plurality of second tubes 632 </ b> B, and a third tube 633. Since the first pipe 631 and the third pipe 633 are the same as those of the first modified example, description thereof is omitted here, and only the second pipe 632B is described.

  The second pipe 632B is formed between the first end plate 62A and the adjacent hollow fin plate 65, between the adjacent hollow fin plates 65, and between the hollow fin plate 65 and the second end plate 62B adjacent thereto. Connect.

  For example, the second tube 632B is joined to the first end plate 62A so that one end of the second tube 632B is exposed in the hollow portion 62Aa of one first end plate 62A, and the other end of the second tube 632B is the hollow portion of the hollow fin plate 65. It joins with the hollow fin plate 65 so that it may be exposed in 65a.

  Similarly, the hollow fin plate 65 is joined to the hollow fin plate 65 so that one end of another second pipe 632B is exposed in the hollow portion 65a of one hollow fin plate 65, and the other end of the second pipe 632B is adjacent. It joins with the hollow fin plate 65 so that it may expose in the hollow part 65a of 65.

  Similarly, the second pipe 632B is joined to the hollow fin plate 65 so that one end of the second pipe 632B is exposed in the hollow portion 65a of one hollow fin plate 65, and the other end of the second pipe 632B is the second end plate. The second end plate 62B is joined so as to be exposed in the hollow portion 62Ba of the 62B.

  The joining method of the 2nd pipe | tube 632B, the 1st end plate 62A, the hollow fin plate 65, and the 2nd end plate 62B applies the same joining method as the case of the 2nd pipe | tube 632 demonstrated by 1st deformation | transformation.

(1-3) Blade 64B
The blade 64B has the same cross-sectional shape as the blade 64 illustrated in FIG. 7, and has a hollow structure. However, in order to give a heat exchange function by circulating a heat medium inside, it is extruded with a metal having high thermal conductivity, for example, aluminum or an aluminum alloy. The blade 64B includes a first blade 64Ba and a second blade 64Bb.

  Further, unlike the skew angle of each blade of the first blade 64Ba group and the skew angle of each blade of the second blade 64Bb group, the rotational noise is suppressed compared to the prior art (Patent Document 1) in which the skew angle does not change. .

(1-3-1) First blade 64Ba
One end of the first blade 64Ba is joined to the first end plate 62A or the second end plate 62B, and the other end is joined to the hollow fin plate 65.

  One end of the first blade 64Ba is joined to the first end plate 62A or the second end plate 62B so as to be exposed in the hollow portion 62Aa of the first end plate 62A or the hollow portion 62Ba of the second end plate 62B. Yes.

  The other end of the first blade 64Ba is joined to the hollow fin plate 65 so as to be exposed in the hollow portion 65a of the hollow fin plate 65.

  Note that the joining method of the first blade 64Ba, the first end plate 62A, the hollow fin plate 65, and the second end plate 62B is the same joining method as that of the blade 64A described in the first modification.

(1-3-2) Second blade 64Bb
The second blade 64Bb has one end joined to one of the adjacent hollow fin plates 65 and the other end joined to the other hollow fin plate 65.

  Both ends of the second blade 64Bb are joined to the hollow fin plate 65 so as to be exposed in the hollow portion 65a of the hollow fin plate 65.

  Note that the same joining method as that of the blade 64A described in the first modification is applied to the joining method of the second blade 64Bb and the hollow fin plate 65.

(1-4) Connecting plate 66
The connecting plate 66 supports the blades of the first blade 64Ba group or the second blade 64Bb group by penetrating them. Each blade is supported by the connecting plate 66, whereby the impeller 60 is reinforced as a whole. The connecting plate 66 is formed of resin or metal, and is made of resin in this embodiment.

(2) Operation of Blower 100B The operation of the blower 100B configured as described above will be described. In addition, since the difference with the operation | movement of 100 A of air blowers of a 1st modification is the way of the flow of the cooling water which is a heat medium, only this difference is demonstrated.

  In FIG. 9A, the cooling water enters from one rotary joint 71 and flows through the first pipe 631 to the hollow portion 62Aa of the first end plate 62A. In addition to the cooling water pressure, the cooling water fills the hollow portion 62Aa to every corner by the centrifugal force generated by the rotation of the first end plate 62A. Thereafter, the cooling water reaches the hollow fin plate 65 through the inside of the second pipe 632B and the plurality of first blades 64Ba.

  In addition to the water pressure of the cooling water, the cooling water fills the hollow portion 65a to every corner by the centrifugal force generated by the rotation of the hollow fin plate 65. Thereafter, the cooling water reaches the adjacent hollow fin plates 65 via the insides of the second pipe 632B and the plurality of second blades 64Bb. In this way, by adopting a configuration in which the divided cooling water is once collected and then divided again, the drift generated on the upstream side can be eliminated. The cooling water reaches the second end plate 62B while repeating this flow.

  Since the blade 64B itself is rotating, the heat quantity of the air flow is lost to the cooling water by heat exchange between the cooling water passing through the blade 64B and the air flow generated by the rotation of the blade 64B. Further, when the cooling water passes through the second pipe 632B, heat exchange is performed with the air flow generated by the rotation of the blade 64B via the second pipe 632B and the hollow fin plate 65. Thus, the air cooled by heat exchange is blown out from the use side unit 30 to cool the surrounding space.

  The cooling water reaches the second end plate 62B while exchanging heat. The hollow portion 62Ba of the second end plate 62B is filled with the cooling water whose temperature has been increased by heat exchange, but gathers at the center by the pressure of the subsequent cooling water and flows to the third pipe 633 of the heat transfer pipe 63B, Go out of rotary joint 71.

(3) Other Configurations In the second modified example, the second pipe 632B connects the first end plate 62A and the hollow fin plate 65, and the hollow fin plate and the second end plate 62B. However, when the flow rate to the plurality of blades 64 is affected by use conditions or the like, only the second pipe 632B may be closed as shown in FIG. 9B.

(4) Features of Second Modification The second modification has the following features in addition to the features of the first embodiment.

(4-1)
In the blower 100B, since the cooling water flows inside the blade 64B group and the blade 64B group itself rotates around the axis, heat exchange between the cooling water flowing inside the blade 64B group and the air flowing outside the blade 64B group is performed. Promoted.

(4-2)
In addition, in the blower 100B, since the cooling water is once divided in the first end plate 62A and then the cooling water is collected in the second end plate 62B, for example, [the inlet portion 61A or the outlet portion] It is more rational in terms of the number of parts and the number of man-hours than the method of individually communicating 61B and each blade of the blade 64B group].

Second Embodiment
In the first embodiment, the first modification, and the second modification, the air conditioner that distributes the cooling water to the blower 100, the blower 100A, and the blower 100B has been described. Here, the air conditioner that distributes the refrigerant to the blower is described. To do.

(1) Configuration of Air Conditioner 201 FIG. 10 is a configuration diagram of an air conditioner using a blower with a heat exchange function according to the second embodiment of the present invention. The air conditioner 201 is a device that cools and heats a room such as a building by vapor compression refrigeration cycle operation. The air conditioner 201 includes a single outdoor unit 220 that is a heat source side unit, an indoor unit 240 that is a plurality of (four in this embodiment) usage side units connected in parallel thereto, an outdoor unit 220, A liquid refrigerant communication pipe 281 and a gas refrigerant communication pipe 282 that connect the indoor unit 240 are provided.

  The refrigerant circuit 211 of the air conditioner 201 is configured by connecting an outdoor unit 220, an indoor unit 240, a liquid refrigerant communication pipe 281 and a gas refrigerant communication pipe 282.

(1-1) Indoor unit 240
The indoor unit 240 is installed by hanging on the ceiling of a room such as a building or by hanging on the wall surface of the room.

  The indoor unit 240 has an indoor refrigerant circuit 211 a that constitutes a part of the refrigerant circuit 211. The indoor refrigerant circuit 211a includes an indoor expansion valve 241 and a blower 200 with a heat exchange function. In this embodiment, each indoor unit 240 is provided with an indoor expansion valve 241. However, the present invention is not limited to this, and an expansion mechanism (including an expansion valve) may be provided in the outdoor unit 220. The unit 240 and the outdoor unit 220 may be provided in a connection unit independent from each other.

(1-1-1) Indoor expansion valve 241
The indoor expansion valve 241 is an electric expansion valve. The indoor expansion valve 241 is connected to the liquid side of the blower 200 with a heat exchange function in order to adjust the flow rate of the refrigerant flowing in the indoor refrigerant circuit 211a. The indoor expansion valve 241 can also block the passage of the refrigerant.

(1-1-2) Blower 200 with a heat exchange function
The blower 200 with the heat exchange function is adopted after improving the pressure resistance, using any one of the blower 100 of the first embodiment, the blower 100A of the first modification, and the blower 100B of the second modification as an original form. . Here, what made the air blower 100B an original form is made into the air blower 200, and it demonstrates using FIG. 9A.

  The blower 200 sucks indoor air into the indoor unit 240, exhibits its own heat exchange function and exchanges heat with the refrigerant, and then supplies the air as indoor air. Moreover, the air blower 200 can change the air volume of air in a predetermined air volume range.

  Moreover, in the air blower 200, the air volume fixed mode and the air volume automatic mode can be selected via an input device such as a remote controller.

  Here, the air volume fixed mode is a mode in which three kinds of fixed air volumes are set, namely, the weak wind with the smallest air volume, the strong wind with the largest air volume, and the medium wind between the weak wind and the strong wind. The air volume automatic mode is a mode in which the air volume is automatically changed between a weak wind and a strong wind according to the degree of superheat SH or the degree of supercooling SC.

  For example, if the user selects one of “weak wind”, “medium wind”, and “strong wind”, the air volume fixing mode is set. If “automatic” is selected, it is automatically set according to the driving state. It becomes the air volume automatic mode in which the air volume is changed.

  In the present embodiment, the fan tap of the air volume of the blower 200 is switched in three stages of “weak wind”, “medium wind”, and “strong wind”. Here, the number of switching stages is not limited to three, but may be ten, for example.

  The air volume of the blower 200 is calculated based on the rotational speed of the motor 50. Here, the calculation of the air volume may be calculated based on the current value of the motor 50, or may be calculated based on the set fan tap.

(1-2) Outdoor unit 220
The outdoor unit 220 is installed outside a building or the like, and is connected to the indoor unit 240 via a liquid refrigerant communication tube 281 and a gas refrigerant communication tube 282, and constitutes a refrigerant circuit 211 together with the indoor unit 240. .

  The outdoor unit 220 has an outdoor refrigerant circuit 211 b that constitutes a part of the refrigerant circuit 211. The outdoor refrigerant circuit 211b includes a compressor 221, a four-way switching valve 222, an outdoor heat exchanger 223, an outdoor expansion valve 238, an accumulator 224, a liquid side closing valve 226, and a gas side closing valve 227. have.

(1-2-1) Compressor 221
The compressor 221 is a variable displacement compressor, and the rotation of the motor 221m is controlled by an inverter. In the present embodiment, only one compressor 221 is provided, but the present invention is not limited to this, and two or more compressors may be connected in parallel depending on the number of connected air conditioning indoor units.

(1-2-2) Four-way selector valve 222
The four-way switching valve 222 is a valve that switches the direction of the refrigerant flow. During the cooling operation, the four-way switching valve 222 connects the discharge side of the compressor 221 and the gas side of the outdoor heat exchanger 223, and at the suction side (specifically, the accumulator 224) of the compressor 221 and the gas refrigerant communication pipe. 282 side is connected (cooling operation state: refer to the solid line of the four-way switching valve 222 in FIG. 1).

  As a result, the outdoor heat exchanger 223 functions as a refrigerant condenser, and the blower 200 with a heat exchange function functions as a refrigerant evaporator.

  During the heating operation, the four-way switching valve 222 connects the discharge side of the compressor 221 and the gas refrigerant communication pipe 282 side, and connects the suction side of the compressor 221 and the gas side of the outdoor heat exchanger 223 (heating). Operation state: (Refer to the broken line of the four-way switching valve 222 in FIG. 1).

  As a result, the blower 200 with a heat exchange function functions as a refrigerant condenser, and the outdoor heat exchanger 223 functions as a refrigerant evaporator.

(1-2-3) Outdoor heat exchanger 223
The outdoor heat exchanger 223 is a cross-fin type fin-and-tube heat exchanger. However, the present invention is not limited to this, and other types of heat exchangers may be used.

  The outdoor heat exchanger 223 functions as a refrigerant condenser during the cooling operation, and functions as a refrigerant evaporator during the heating operation. The outdoor heat exchanger 223 has a gas side connected to the four-way switching valve 22 and a liquid side connected to the outdoor expansion valve 238.

(1-2-4) Outdoor expansion valve 238
The outdoor expansion valve 238 is an electric expansion valve, and adjusts the pressure and flow rate of the refrigerant flowing in the outdoor refrigerant circuit 211b. The outdoor expansion valve 238 is disposed on the downstream side of the outdoor heat exchanger 223 in the refrigerant flow direction in the refrigerant circuit 211 during the cooling operation.

(1-2-5) Outdoor fan 228
The outdoor fan 228 sends the sucked outdoor air to the outdoor heat exchanger 223 to exchange heat with the refrigerant. The outdoor fan 228 can vary the amount of air that is blown to the outdoor heat exchanger 223. The outdoor fan 228 is a propeller fan or the like, and is driven by a motor 228m including a DC fan motor or the like.

(1-2-6) Liquid side closing valve 226 and gas side closing valve 227
The liquid side shutoff valve 226 and the gas side shutoff valve 227 are valves provided at connection ports with the liquid refrigerant communication pipe 281 and the gas refrigerant communication pipe 282.

  The liquid side closing valve 226 is disposed downstream of the outdoor expansion valve 238 and upstream of the liquid refrigerant communication pipe 281 in the refrigerant flow direction in the refrigerant circuit 211 during the cooling operation. The gas side closing valve 227 is connected to the four-way switching valve 222. The liquid side closing valve 226 and the gas side closing valve 227 can block the passage of the refrigerant.

(1-3) Refrigerant communication pipes 281 and 282
The refrigerant communication pipes 281 and 282 are refrigerant pipes that are constructed on site when the air conditioner 201 is installed at an installation location such as a building. Since the refrigerant communication pipes 281 and 282 have various lengths and pipe diameters depending on the installation conditions such as the installation location and the combination of the air conditioner outdoor unit and the air conditioner indoor unit, when installing the air conditioner 201, An appropriate amount of refrigerant is filled according to the installation conditions such as the length of the refrigerant communication pipes 281 and 282 and the pipe diameter.

(2) Driving Operation Next, the driving operation of the air conditioner 201 according to the present embodiment will be described. In the air conditioner 201, the cooling operation and the heating operation are switched and performed.

(2-1) Cooling Operation In the cooling operation, the four-way switching valve 222 shown in FIG. 10 is in a state indicated by a solid line, the outdoor expansion valve 238 is fully opened, the compressor 221, the blower 200 with a heat exchange function, and the outdoor fan 228 are It becomes a driving state. Thereby, in the refrigerant circuit 211, the refrigerating cycle in which the outdoor heat exchanger 223 becomes a condenser and the blower 200 becomes an evaporator is performed.

  Specifically, the high-pressure refrigerant compressed by the compressor 221 flows through the outdoor heat exchanger 223 and exchanges heat with outdoor air. In the outdoor heat exchanger 223, the high-pressure refrigerant dissipates heat to the outdoor air and condenses. The refrigerant condensed in the outdoor heat exchanger 223 is sent to the indoor unit 240. In the indoor unit 240, the refrigerant is decompressed by the indoor expansion valve 241, and then flows into the inlet 61A of the blower 200 through the rotary joint 71 (see FIG. 9A).

  The refrigerant is evenly diffused inside the first end plate 62A and is divided into each of the plurality of blades 64B. Thereafter, the refrigerant flowing through each blade 64B gathers in the hollow fin plate 65, and the drift generated in each blade 64B is eliminated. Then, the refrigerant gathered in the hollow fin plate 65 is divided equally into each of the plurality of blades 64 </ b> B, and is directed to the next hollow fin plate 65. The refrigerant repeats such a flow, finally gathers in the second end plate 62B, and flows out from the outlet portion 61B.

  In the indoor unit 240, when indoor air passes through the blower 200, heat is exchanged with the refrigerant through the first end plate 62A, the second end plate 62B, the hollow fin plate 65, and the blade 64B. It absorbs heat and evaporates, and the air is cooled by the refrigerant.

  The air cooled by the blower 200 is supplied to the indoor space. The refrigerant evaporated by the blower 200 returns to the outdoor unit 220 through the rotary joint 71, is sucked into the compressor 221, and is compressed again.

(2-2) Heating Operation In the heating operation, the four-way switching valve 222 shown in FIG. 10 is in a state indicated by a broken line, the indoor expansion valve 241 is fully opened, the compressor 221, the blower 200 with a heat exchange function, and the outdoor fan 228 It becomes a driving state. Thereby, in the refrigerant circuit 211, the refrigerating cycle in which the air blower 200 becomes a condenser and the outdoor heat exchanger 223 becomes an evaporator is performed.

  Specifically, the high-pressure refrigerant compressed by the compressor 221 flows through the blower 200 of the indoor unit 240.

  In the indoor unit 240, the flow direction of the refrigerant is opposite to that during the cooling operation, and therefore flows from the outlet 61B of the blower 200 through the rotary joint 71 (see FIG. 9A).

  Then, the refrigerant is evenly diffused inside the second end plate 62B and is divided into each of the plurality of blades 64A. Thereafter, the refrigerant flowing through each blade 64B gathers in the hollow fin plate 65, and the drift generated in each blade 64A is eliminated. Then, the refrigerant gathered in the hollow fin plate 65 is divided equally into each of the plurality of blades 64 </ b> B, and is directed to the next hollow fin plate 65. The refrigerant repeats such a flow, finally gathers in the first end plate 62A, and flows out from the inlet 61A.

  In the indoor unit 240, when indoor air passes through the blower 200, heat is exchanged with the refrigerant through the second end plate 62B, the first end plate 62A, the hollow fin plate 65, and the blade 64B, and the refrigerant radiates heat to the indoor air. And the air is heated by the refrigerant.

  The air heated by the blower 200 is supplied to the indoor space. Further, the refrigerant condensed by the blower 200 returns to the outdoor unit 220 via the rotary joint 71, is decompressed by the outdoor expansion valve 238, and then flows through the outdoor heat exchanger 223. In the outdoor heat exchanger 223, the refrigerant absorbs heat from the outdoor air and evaporates. The refrigerant evaporated in the outdoor heat exchanger 223 is sucked into the compressor 221 and compressed again.

(3) Features of the second embodiment (3-1)
In the blower 200, since the rotor 53 obtains a rotational force outside the stator 51, it is not necessary to transmit the rotational force directly to the shaft of the rotor 53.

(3-2)
Moreover, since the rotary joint 71 which connects the inlet 61A or the outlet 61B, or the inlet 61A or the outlet 61B and the heat source side of the cooling water is disposed in the through space 510 surrounded by the annular stator, Is placed on the shaft of the impeller 60, but the load acting on the impeller 60 is limited to the inherent load and friction load of the rotary joint 71 regardless of the rotational load of the impeller 60, and is almost stable.

(3-3)
Therefore, it is not necessary to further increase the strength of the shafts at both ends of the impeller 60, and the heat transfer pipe 63 and the like through which the refrigerant flows can be used as a shaft. By adopting a general-purpose standard pipe, the cost can be reduced. be able to. Ultimately, the increase in size and complexity of the motor can be suppressed.

(3-4)
In the blower 200, since the refrigerant flows inside the blade 64B group and the blade 64B group itself rotates around the axis, heat exchange between the refrigerant flowing inside the blade 64B group and the air flowing outside the blade 64B group is promoted. The

(3-5)
Further, in the blower 200, since the refrigerant is once divided in the first end plate 62A and then collected in the second end plate 62B, for example, [the inlet portion 61A or the outlet portion 61B and This is more rational in terms of the number of parts and the number of man-hours than the method of communicating each blade of the blade group 64 individually.

  As described above, the blower with a heat exchange function according to the present invention is useful for the use side unit of the air conditioner, but is also useful for the heat source side unit of the refrigeration apparatus in the future due to the expansion of the capacity and the like.

51 Stator 53 Rotor 60 Impeller 61A Inlet Portion 61B Outlet Portion 62A First End Plate (Hollow Member for Fluid Splitting)
62B Second end plate (hollow member for fluid assembly)
64 blades (hollow blade group)
64A blade (hollow blade group)
64B blade (hollow blade group)
71 Rotary joint (communication part)
100 Blower 100A Blower 100B Blower 200 Blower 510 Through space

JP2011-2187A

Claims (6)

(See Figure 4)
An annular stator (51) having a coil;
A rotor (53) disposed outside the stator and receiving a rotational force;
An impeller (60) provided on the rotor and rotating together with the rotor;
With
The impeller (60)
An inlet (61A, 61B) for introducing a fluid;
A flow path section for flowing the fluid;
Outlet portions (61B, 61A) for discharging the fluid;
Have
A through space (510) in which the communication part (71) communicating the inlet part or the outlet part or the inlet part or the outlet part and the fluid heat source side is surrounded by the annular stator (51) Placed in the
Blower with heat exchange function. The flow path portion includes a pipe (63) connecting the inlet portion and the outlet portion.
The blower with a heat exchange function according to claim 1. (See FIGS. 8A and 8B)
The flow path portion includes a hollow blade group (64) disposed between the inlet portion and the outlet portion and forming a blade having a hollow structure.
The blower with a heat exchange function according to claim 1 or 2. The channel section is
A fluid splitting hollow disposed between the inlet portion and the hollow blade group (64) and branching the fluid introduced from the inlet portion into a plurality of blades and flowing into the plurality of blades of the hollow blade group (64). A member (62A);
A fluid collecting hollow member (62B) that is disposed between the hollow blade group (64) and the outlet portion, and collects the fluid flowing from the hollow blade group (64) and flows the fluid to the outlet portion;
Further including
The blower with a heat exchange function according to claim 3. The communication part (71) is a rotary joint that connects the inlet part or the outlet part rotating with respect to the heat source side of the fluid.
The blower with a heat exchange function according to any one of claims 1 to 4. A blower with a heat exchange function according to any one of claims 1 to 5,
air conditioner.

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