JP2008196738A - Ventilating device and heat exchange unit used in the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a ventilating device and a heat exchange unit used in the same, capable of controlling indoor temperature change due to ventilation. <P>SOLUTION: This ventilating device comprises an air supply duct 8 for supplying the outdoor 4 air into the room, and a heat exchange means 16 for exchanging heat with the air flowing through the air supply duct 8. The heat exchange means 16 has a heat source machine 46 for supplying a heat transport medium, a heat transfer pipe 44 disposed in the air supply duct 8, and a supply line 48 and a return line 49 connecting the heat source machine 46 and the heat transfer pipe 44. The heat transport medium from the heat source machine 46 is circulated through the supply line 48, the heat transfer pipe 44 and the return line 49. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a ventilator for ventilating indoor air and a heat exchange unit used therefor.

  In recent years, a ventilator for ventilating indoor air has been proposed from the viewpoint of preventing condensation due to high airtightness of houses and retention of harmful substances generated from building materials and the like (see, for example, Patent Document 1). The ventilation device includes an exhaust duct for exhausting indoor air to the outdoors, an exhaust fan disposed in the exhaust duct, an air supply duct for supplying outdoor air to the room, and an air supply duct. And an air supply fan disposed.

  In this ventilator, indoor air is exhausted to the outside through the exhaust duct by the action of the exhaust fan, and outdoor air is supplied to the room through the air supply duct by the action of the air supply fan. Indoor air is ventilated.

JP-A-5-203215

  However, the conventional ventilation apparatus as described above has the following problems. For example, when indoor air is ventilated as described above in winter, outdoor cold air is supplied into the room through the air supply duct, and the indoor temperature decreases due to ventilation, resulting in reduced indoor heating efficiency. There is a problem that it ends up. Further, for example, when indoor air is ventilated as described above in summer, outdoor hot air is supplied into the room through the air supply duct, and the indoor temperature is increased by ventilation, so that the indoor cooling efficiency is improved. There is a problem that it falls.

  The objective of this invention is providing the ventilation apparatus which can suppress the indoor temperature change by ventilation, and the heat exchange unit used for this.

In the ventilator according to claim 1 of the present invention, an air supply duct for supplying outdoor air into the room, and a heat exchange means for exchanging heat between the air flowing through the air supply duct; With
The heat exchanging means includes a heat source unit for supplying a heat transfer medium, a heat transfer pipe disposed in the air supply duct, a supply line and a return line connecting the heat source unit and the heat transfer pipe, The heat transfer medium from the heat source device is circulated through the supply line, the heat transfer pipe, and the return line.

In the ventilator according to claim 2 of the present invention, the heat transfer pipe is spirally arranged inside the air supply duct.
Furthermore, in the ventilator according to claim 3 of the present invention, the air supply duct is constituted by a duct body having a duct member and a spiral reinforcing member provided in the duct member, and the heat transfer pipe is In the duct member, the duct member is spirally disposed along the reinforcing member.

  In the ventilator according to claim 4 of the present invention, a heat exchange region in which the heat transfer pipe is disposed is defined inside the air supply duct, and the heat transfer pipe is formed in the heat exchange region. After being disposed from one end of the other end toward the other end and folded back, it is disposed toward the one end of the heat exchange region, and the inflow side end and the outflow side end of the heat transfer pipe are: It is arrange | positioned at the said one end part of the said heat exchange area | region, It is characterized by the above-mentioned.

Furthermore, the ventilator according to claim 5 of the present invention is characterized in that the outer peripheral portion of the air supply duct is covered with a heat insulating member in correspondence with the location of the heat transfer pipe.
The heat exchange unit according to claim 6 of the present invention is a heat exchange unit for exchanging heat with air supplied indoors from the outside,
A duct body, and a heat transfer pipe that is disposed in the duct body and through which a heat transfer medium flows. The duct body constitutes a part of an air supply duct for supplying outdoor air into the room. It is characterized by that.

  According to the ventilation device of the first aspect of the present invention, the heat transfer pipe is arranged in the air supply duct, and the heat transfer medium from the heat source machine is circulated through the supply line, the heat transfer pipe and the return line. Therefore, heat exchange is performed between the heat transfer medium flowing through the heat transfer pipe disposed in the air supply duct and the air flowing through the air supply duct, and the temperature of the air introduced into the room can be adjusted. Moreover, the whole ventilator can be reduced in size, and installation and construction of the ventilator can be easily performed. In addition, the existing ventilation duct or the like can be used as the air supply duct, and the existing hot water pipe or the like can be used as the supply line and the return line, so that the installation cost of the ventilation device can be reduced. Also, by adjusting the outer diameter, length, etc. of the heat transfer pipe, the flow rate of the heat transfer medium flowing through the heat transfer pipe and the heat dissipation area or heat absorption area of the heat transfer pipe can be adjusted. The amount of exchange heat can be easily adjusted. As the heat transfer medium, a heat transfer medium such as hot water or a cold heat transfer medium such as cold water can be used. When heat is generated as a heat source and a heat transfer medium is used as a heat transfer medium, the supply air is warmed by the heat of the heat transfer medium flowing through the heat transfer pipe, and this heated supply air is supplied indoors. The Therefore, for example, in winter, cold outdoor air is prevented from being supplied indoors, and a temperature drop due to ventilation can be suppressed. In addition, when cold heat is generated as the heat source device and the cold heat transfer medium is used as the heat transfer medium, the supply air is cooled by the heat of the cold heat transfer medium flowing through the heat transfer pipe, and this cooled supply air is indoors. Supplied. Therefore, for example, in summer, hot outdoor air is prevented from being supplied indoors, and an increase in indoor temperature due to ventilation can be suppressed.

  Further, according to the ventilator according to claim 2 of the present invention, since the heat transfer pipe is spirally arranged inside the air supply duct, more heat radiation area or heat absorption area of the heat transfer pipe is secured. The amount of heat exchanged by the heat exchange means can be increased. In addition, when the heat transfer pipe is formed of, for example, a rubber material or a resin material having elastic restoring force, when the helical heat transfer pipe is somewhat contracted in the radial direction and attached, the heat transfer pipe is attached to the heat transfer pipe. The elastic restoring force that tries to expand radially outward acts, which causes the heat transfer pipe to press the air supply duct from the inside, and stably arranges the heat transfer pipe inside the air supply duct. Can be set.

  Furthermore, according to the ventilator according to claim 3 of the present invention, since the heat transfer pipe is spirally disposed along the reinforcing member inside the duct member, the heat transfer pipe connects the duct member from the inside. The heat transfer pipe can be stably disposed inside the duct member.

  Moreover, according to the ventilator according to claim 4 of the present invention, the inflow side end and the outflow side end of the heat transfer pipe are disposed at one end of the heat exchange region of the air supply duct. The supply line and return line connecting the inflow end and outflow end of the heat transfer pipe and the heat source unit are not complicated, and the ventilation device can be installed and installed more easily. Can do.

  Furthermore, according to the ventilator according to claim 5 of the present invention, the outer peripheral portion of the air supply duct is covered with the heat insulating member so as to correspond to the arrangement site of the heat transfer pipe, and therefore flows through the heat transfer pipe. The heat of the heat transfer medium can be prevented from being radiated to the outside of the air supply duct, and a high amount of exchange heat can be maintained. Further, the heat insulating member can absorb sound generated when the heat transfer medium flows through the heat transfer pipe, and can prevent the indoor quietness from being impaired.

  In the heat exchange unit according to claim 6 of the present invention, the heat transfer pipe is disposed in the duct body, and the heat transfer medium is circulated through the heat transfer pipe. Heat exchange is performed between the medium and the air flowing through the duct body, the temperature of the air introduced into the room can be adjusted, and such a heat exchange unit can be downsized. Also, by adjusting the outer diameter, length, etc. of the heat transfer pipe, the flow rate of the heat transfer medium flowing through the heat transfer pipe and the heat dissipation area or heat absorption area of the heat transfer pipe can be adjusted. The amount of exchange heat can be easily adjusted.

Hereinafter, various embodiments of a ventilator according to the present invention and a heat exchange unit used therewith will be described with reference to the accompanying drawings.
[First Embodiment]
First, with reference to FIG.1 and FIG.2, the ventilation apparatus by the 1st Embodiment of this invention and the heat exchange unit used for this are demonstrated. FIG. 1 is a schematic cross-sectional view showing a ventilation device according to a first embodiment of the present invention, and FIG. 2 is a schematic cross-sectional view of the heat exchange unit of FIG.

  In FIG. 1, the illustrated ventilator 2 includes an air supply duct 8 for supplying air in the outdoor 4 to the room 6, an air supply fan device 10 disposed in the air supply duct 8, and air in the room 6. A heat exchange means 16 for exchanging heat between the exhaust duct 12 for exhausting the air to the outdoors 4, the exhaust fan device 14 disposed in the exhaust duct 12, and the air flowing through the air supply duct 8, It has. Hereinafter, each of these components will be described in detail.

  In the present embodiment, the air supply duct 8 includes an outdoor air supply duct 18 disposed on the outdoor 4 side, an indoor air supply duct 20 disposed on the indoor 6 side, and an outdoor air supply duct 18. It is comprised from the heat supply air supply duct 22 connected between the indoor air supply ducts 20. The air supply duct 8 is disposed, for example, in an attic 24 of a general house or a condominium, the upstream opening of the outdoor air supply duct 18 communicates with the outdoor 4, and the downstream side of the indoor air supply duct 20. The opening is in communication with the room 6.

  Each of the air supply ducts 18, 20, and 22 includes a duct body 26, and the duct body 26 includes a duct member 28 and a spiral (ie, coil-shaped) reinforcing member 30 provided on the duct member 28. It is configured. The duct member 28 is made of, for example, an aluminum foil, and the reinforcing member 30 is made of, for example, a steel wire. The duct member 28 is held in a tube shape by the reinforcing member 30 formed in a spiral shape, and can be bent freely.

  Further, insertion openings 32 are respectively provided at both ends of the duct member 28 of the heat exchange air supply duct 22, and a heat exchange region 34 is defined inside the duct member 28. Further, the outer peripheral portion of the heat exchange air supply duct 22 is covered with a tubular heat insulating member 36 made of, for example, heat insulating wool.

  The air supply fan device 10 is disposed between the outdoor side air supply duct 18 and the heat exchange air supply duct 22. The air supply fan device 10 is rotationally driven in a predetermined direction by an air supply motor (not shown), and when the air supply fan device 10 is rotationally driven in this way, the outdoor 4 air is supplied to the outdoor air supply duct. 18, the air is supplied into the room 6 through the heat exchange air supply duct 22 and the indoor air supply duct 20.

  In the present embodiment, the exhaust duct 12 includes an outdoor exhaust duct 38 disposed on the outdoor 4 side and an indoor exhaust duct 40 disposed on the indoor 6 side. The exhaust duct 12 is disposed, for example, in an attic 24 of a general house or an apartment, the downstream opening of the outdoor exhaust duct 38 communicates with the outdoor 4, and the upstream opening of the indoor exhaust duct 40 is It communicates with the room 6. Each of these exhaust ducts 38 and 40 is configured in the same manner as each of the air supply ducts 18, 20 and 22 described above.

  The exhaust fan device 14 is disposed between the outdoor side exhaust duct 38 and the indoor side exhaust duct 40. The exhaust fan device 14 is rotationally driven in a predetermined direction by an exhaust motor (not shown), and when the exhaust fan device 14 is rotationally driven in this manner, the air in the room 6 is circulated to the indoor exhaust duct 40 and the outdoor side. The air is exhausted to the outdoors 4 through the exhaust duct 38.

  The heat exchange means 16 includes a duct main body 26 of the heat exchange air supply duct 22 described above, a heat transfer pipe 44 disposed in the duct main body 26 of the heat exchange air supply duct 22, and hot water (heat transfer medium A heat source machine 46 for supplying the heat source pipe 44 and the heat source machine 46, and a supply line 48 and a return line 49 that interconnect the heat transfer pipe 44 and the heat source machine 46. The heat exchange unit 42 is configured by the duct body 26 and the heat transfer pipe 44 of the heat exchange air supply duct 22.

  The heat transfer pipe 44 is formed of, for example, a rubber material or a resin material having flexibility and elastic restoring force, and from one end portion to the other end portion of the heat exchange region 34 in the duct body 26 of the heat exchange air supply duct 22. It is arrange | positioned spirally (namely, coil shape) along the reinforcement member 30 toward (refer FIG. 2). The heat transfer pipe 44 is disposed inside the duct body 26 of the heat exchange air supply duct 22 as follows, for example. First, in a state where the heat exchange air supply duct 22 is removed from the indoor air supply duct 20 and the air supply fan device 10, the outer diameter is somewhat smaller than the outer diameter of the duct body 26 of the heat exchange air supply duct 22. A rod-shaped or cylindrical core member (not shown) is prepared, and the heat transfer pipe 44 is spirally wound around the outer peripheral portion of the core member at a spiral pitch substantially the same as the spiral pitch of the reinforcing member 30. The core member around which the pipe 44 is wound is inserted into one of the openings of the duct body 26 of the heat exchange air supply duct 22. Thereafter, by removing only the core member from the inside of the duct body 26 of the heat exchange air supply duct 22, the heat transfer pipe 44 is attached to the reinforcing member 30 on the inner peripheral portion of the duct body 26 of the heat exchange air supply duct 22. It is arranged along the spiral. Then, the heat exchange air supply duct 22 (that is, the heat exchange unit 42) in which the heat transfer pipes 44 are arranged in this manner is connected between the indoor air supply duct 20 and the air supply fan device 10.

  When the heat transfer pipe 44 formed in a spiral shape as described above is attached to the inside of the duct body 26 of the heat exchange air supply duct 22 in a state of being somewhat contracted in the radial direction, the heat transfer pipe 44 is radially outward. An elastic restoring force is exerted to expand to the inside, so that the spiral heat transfer pipe 44 presses the duct member 28 of the heat exchange air supply duct 22 from the inside, and the heat transfer pipe 44 exchanges heat. The air supply duct 22 is stably disposed inside the duct body 26.

  In addition, the inflow side end 50 and the outflow side end 52 of the heat transfer pipe 44 extend to the outside of the heat exchange air supply duct 22 through insertion openings 32 provided at both ends of the duct body 26, respectively. Connected to supply line 48 and return line 49. The hot water generated in the heat source machine 46 flows into the inflow side end 50 of the heat transfer pipe 44 through the supply line 48, flows out of the outflow side end 52 after flowing through the heat transfer pipe 44, and It returns to the heat source machine 46 through the return line 49.

  A method for ventilating the air in the room 6 by the ventilator 2 configured as described above will be described as follows. When the air supply motor and the exhaust motor are operated, the air supply fan device 10 and the exhaust fan device 14 are rotationally driven in predetermined directions, respectively. By the action of the air supply fan device 10, the outdoor 4 air is supplied to the room 6 through the outdoor air supply duct 18, the heat exchange air supply duct 22 and the indoor air supply duct 20, and the action of the exhaust fan device 14. As a result, the air in the room 6 is discharged to the outdoors 4 through the indoor side exhaust duct 40 and the outdoor side exhaust duct 38.

  When the heat source device 46 is operated in such a ventilation state, the hot water generated by the heat source device 46 is circulated through the supply line 48, the heat transfer pipe 44 and the return line 49. When the hot water flows through the heat transfer pipe 44 as described above, heat exchange is performed between the hot water flowing through the heat transfer pipe 44 and the air flowing through the heat exchange air supply duct 22, and the heat exchange air supply is performed by this heat exchange. The air flowing through the duct 22 is warmed. The warmed air flows through the indoor air supply duct 20 and is supplied to the indoor 6 through the downstream opening. Accordingly, for example, in winter, cold outdoor air (for example, about 5 ° C.) is heat-exchanged by the heat exchanging means 16 to be heated to a predetermined temperature (for example, about 20 ° C.), and this warmed air is supplied to the room 6. Therefore, the temperature drop of the room 6 due to ventilation can be suppressed.

  The ventilation device 2 according to the first embodiment has a simple configuration in which the heat transfer pipe 44 disposed in the heat exchange air supply duct 22 is used, and between the air flowing through the heat exchange air supply duct 22. Heat exchange can be performed, the entire ventilator 2 can be downsized, and the ventilator 2 can be easily installed and installed.

  Further, since the outer peripheral portion of the heat exchange air supply duct 22 is covered with the heat insulating member 36 as described above, the heat of the hot water flowing through the heat transfer pipe 44 is radiated to the outside of the heat exchange air supply duct 22. This prevents the heat exchange means 16 from maintaining a high amount of exchange heat. Further, the heat insulating member 36 absorbs the sound generated when the hot water flows through the heat transfer pipe 44, and can prevent the silence of the room 6 from being impaired.

  Further, the flow rate of the hot water flowing through the heat transfer pipe 44 can be adjusted by adjusting the outer diameter of the heat transfer pipe 44, and the length of the heat transfer pipe 44 (that is, the number of turns of the heat transfer pipe 44) can be adjusted. By adjusting, the heat radiation area of the heat transfer pipe 44 can be adjusted, whereby the amount of exchange heat of the heat exchange means 16 can be easily adjusted.

  Further, an existing ventilation duct or the like can be used as the air supply duct 8, and an existing hot water pipe or the like can be used as the supply line 48 or the return line 49, so that the installation cost of the ventilation device 2 can be reduced. When an existing ventilation duct (not shown) is used as the air supply duct 8, a part of the existing ventilation duct is cut, and the heat of the heat exchange unit 42 described above is cut into the cut portion. The duct body 26 of the replacement air supply duct 22 may be connected.

  In the heat exchange unit 42 of the first embodiment, as shown in FIG. 2, the heat transfer pipe 44 is arranged in a spiral shape with a predetermined distance from the reinforcing member 30. For example, the following configuration may be adopted. That is, as shown in FIG. 3, in this heat exchange unit 42 ′, the heat transfer pipe 44 ′ is spirally disposed adjacent to the reinforcing member 30. The same effect as described above is achieved.

[Second Embodiment]
Next, with reference to FIG.4 and FIG.5, the ventilation apparatus by the 2nd Embodiment of this invention and the heat exchange unit used for this are demonstrated. FIG. 4 is a schematic cross-sectional view showing a ventilation device according to a second embodiment of the present invention, and FIG. 5 is a schematic cross-sectional view of the heat exchange unit of FIG. In the following embodiments, the same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.

  In the ventilator 2A of the second embodiment, the heat transfer pipe 44A extends along the reinforcing member 30 from one end of the heat exchange region 34 in the duct body 26A of the heat exchange air supply duct 22A toward the other end. After being disposed in a spiral shape and folded back at the other end portion of the heat exchange region 34, it is spirally disposed along the reinforcing member 30 toward the one end portion of the heat exchange region 34 as described above. An insertion opening 32A is provided at one end of the duct body 26A of the heat exchange air supply duct 22A, and the inflow side end 50 and the outflow side end 52 of the heat transfer pipe 44A are respectively provided for heat exchange. The air duct 22A is disposed at one end of the heat exchanging region 34 in the duct main body 26A, and extends to the outside of the duct main body 26A of the heat exchanging air supply duct 22A through the insertion opening 32A. Connected to line 49A.

  Therefore, in the ventilator 2A of the second embodiment, the inflow side end 50 and the outflow side end 52 of the heat transfer pipe 44A can be taken out from the one end of the heat exchange air supply duct 22A, respectively. The arrangement of the supply line 48A and the return line 49A does not become complicated, and the ventilation device 2A can be easily installed and installed.

[Third Embodiment]
Next, with reference to FIG. 6, the ventilation apparatus by the 3rd Embodiment of this invention and the heat exchange unit used for this are demonstrated. FIG. 6: is a schematic sectional drawing which shows the heat exchange unit used for the ventilator by the 3rd Embodiment of this invention.

  In the heat exchange unit 42B of the ventilation device of the third embodiment, the heat transfer pipe 44B is reinforced from one end of the heat exchange region 34 in the duct main body 26 of the heat exchange air supply duct 22 toward the other end. The member 30 is arranged in a spiral shape while intersecting with the member 30. Accordingly, as in the first and second embodiments, the spiral heat transfer pipe 44B presses the duct member 28 of the heat exchange air supply duct 22 from the inside, and the heat transfer pipe 44B exchanges heat. The air supply duct 22 is stably disposed inside the duct body 26.

  Although not shown, as in the second embodiment, the reinforcing member 30 intersects from one end of the heat exchange region 34 in the duct body 26 of the heat exchange air supply duct 22 toward the other end. The heat transfer pipe 44B is disposed in a spiral shape, folded back at the other end of the heat exchange region 34, and then crossed with the reinforcing member 30 toward the one end of the heat exchange region 34 in the same manner as described above. May be arranged in a spiral shape.

[Fourth Embodiment]
Next, with reference to FIG. 7, the ventilation apparatus by the 4th Embodiment of this invention and the heat exchange unit used for this are demonstrated. FIG. 7: is a schematic sectional drawing which shows the heat exchange unit used for the ventilator by the 4th Embodiment of this invention.

  In the heat exchange unit 42C of the ventilator of the fourth embodiment, the duct body 26C of the heat exchange air supply duct 22C has a duct member 28C and a plurality of (this embodiment) provided at predetermined intervals on the duct member 28C. 7) in the form of a ring-shaped reinforcing member 30C. The heat transfer pipe 44C is disposed in a spiral shape while intersecting the reinforcing member 30C from one end of the heat exchange region 34 in the duct main body 26C of the heat exchange air supply duct 22C toward the other end. Also in the fourth embodiment, the same operational effects as described above are achieved.

  Although not shown, the heat transfer pipe intersects with the reinforcing member 30C from one end of the heat exchange region 34 in the duct body 26C of the heat exchange air supply duct 22C toward the other end, as described above. 44C is disposed in a spiral shape and folded at the other end of the heat exchange region 34, and then the heat transfer pipe 44C is spiraled toward the one end of the heat exchange region 34 while intersecting the reinforcing member 30C in the same manner as described above. You may comprise so that it may be arrange | positioned.

  As mentioned above, although embodiment of the various ventilation apparatus according to this invention was described, this invention is not limited to this embodiment, A various deformation | transformation thru | or correction | amendment are possible without deviating from the scope of the present invention.

  For example, in each of the above-described embodiments, the hot water (heat transfer medium) from the heat source unit 46 is supplied to the supply line 48 (48A), the heat transfer pipes 44 (44 ′) (44A) (44B) (44C), and the return line 49 (49A). However, instead of this warm water, a cold transport medium such as cold water may be circulated. In such a case, heat is exchanged between the cold water flowing through the heat transfer pipes 44 (44 ′) (44A) (44B) (44C) and the air flowing through the heat exchange air supply ducts 22 (22A) (22C). Then, the air flowing through the air supply duct 8 (8A) is cooled, and the cooled air is supplied to the room 6. Therefore, for example, in summer, when the air in the room 6 is ventilated, it is possible to prevent the hot air in the outdoor 4 from being supplied to the room 6 and the temperature in the room 6 from rising.

  In addition, for example, a switching device (not shown) is provided in the heat source unit 46, and the switching destination of the switching unit sets the supply destination of the hot water from the heat source unit 46 in the ventilation device 2 (2A) and the room 6. You may comprise so that it may switch to a floor heating apparatus etc. (not shown).

  Further, for example, in each of the above embodiments, the outer peripheral portion of the heat exchange air supply duct 22 (22A) (22C) is covered with the heat insulating member 36, but the heat exchange air supply duct 22 (22A) (22C) In addition, the outer peripheral portion of the indoor air supply duct 20 may be covered with the heat insulating member 36. With this configuration, the heat of the air flowing through the indoor air supply duct 20 is radiated to the outside. Can be prevented.

  Further, for example, in each of the above embodiments, the air supply duct 8 (8A) is composed of the outdoor side air supply duct 18, the heat exchange air supply ducts 22 (22A) (22C), and the indoor side air supply duct 20, For example, the air supply duct 8 (8A) is composed of an outdoor air supply duct 18 and an indoor air supply duct 20, and the outdoor air supply duct 18 and the indoor air supply duct 20 are interposed between them. The air supply fan device 10 may be provided, and the heat exchange means 16 (16 ′) (16A) (16B) (16C) may be provided in the indoor air supply duct 20.

  Further, for example, in each of the above embodiments, the exhaust device 2 (2A) includes the air supply duct 8 (8A), the air supply fan device 10, the exhaust duct 12, the exhaust fan device 14, and the heat exchange means 16 (16 ') (16A). ) (16B) (16C), the exhaust duct 12 and the exhaust fan device 14 may be omitted.

  Further, for example, in each of the above embodiments, the duct main body 26 (26A) (26C) of the heat exchange air supply duct 22 (22A) (22C) includes the duct member 28 (28A) (28C) and the duct member 28 (28A). The reinforcing member 30 (30C) provided in (28C) may be omitted, but the reinforcing member 30 (30C) may be omitted. In such a case, the spiral heat transfer pipes 44 (44 ') (44A) (44B) (44C) connect the duct members 28 (28A) (28C) of the heat exchange air supply ducts 22 (22A) (22C). Since the pressure is applied from the inside, the duct members 28 (28A) (28C) are held in a tube shape by the heat transfer pipes 44 (44 ') (44A) (44B) (44C) disposed in a spiral shape therein. The

It is a schematic sectional drawing which shows the ventilation apparatus by the 1st Embodiment of this invention. It is a schematic sectional drawing of the heat exchange unit of FIG. It is a schematic sectional drawing which shows the modification of the heat exchange unit of FIG. It is a schematic sectional drawing which shows the ventilation apparatus by the 2nd Embodiment of this invention. It is a schematic sectional drawing of the heat exchange unit of FIG. It is a schematic sectional drawing which shows the heat exchange unit of the ventilation apparatus by the 3rd Embodiment of this invention. It is a schematic sectional drawing which shows the heat exchange unit of the ventilation apparatus by the 4th Embodiment of this invention.

Explanation of symbols

2,2A Ventilator 4 Outdoor 6 Indoor 8,8A Air supply duct 16, 16 ', 16A, 16B, 16C Heat exchange means 26, 26A, 26C Duct body 28, 28A, 28C Duct member 30, 30C Reinforcement member 34 Heat exchange Area 36 Insulation member 42, 42 ', 42A, 42B, 42C Heat exchange unit 44, 44', 44A, 44B, 44C Heat transfer pipe 46 Heat source machine 48, 48A Supply line 49, 49A Return line 50 Inlet side end 52 Outflow Side edge

Claims (6)

An air supply duct for supplying outdoor air into the room, and heat exchange means for exchanging heat between the air flowing through the air supply duct,
The heat exchanging means includes a heat source unit for supplying a heat transfer medium, a heat transfer pipe disposed in the air supply duct, a supply line and a return line connecting the heat source unit and the heat transfer pipe, And the heat transfer medium from the heat source device is circulated through the supply line, the heat transfer pipe, and the return line.   The ventilation apparatus according to claim 1, wherein the heat transfer pipe is spirally arranged inside the air supply duct.   The air supply duct is composed of a duct body having a duct member and a spiral reinforcing member provided on the duct member, and the heat transfer pipe is spirally formed along the reinforcing member inside the duct member. The ventilation device according to claim 2, wherein the ventilation device is arranged.   A heat exchange region in which the heat transfer pipe is disposed is defined inside the air supply duct, and the heat transfer pipe is disposed from one end portion to the other end portion of the heat exchange region and folded. After that, it is disposed toward the one end of the heat exchange region, and the inflow side end and the outflow side end of the heat transfer pipe are disposed at the one end of the heat exchange region. The ventilator according to any one of claims 1 to 3.   The ventilator according to any one of claims 1 to 4, wherein an outer peripheral portion of the air supply duct is covered with a heat insulating member corresponding to a portion where the heat transfer pipe is disposed. A heat exchange unit for exchanging heat with air supplied indoors from outside,
A duct body, and a heat transfer pipe that is disposed in the duct body and through which a heat transfer medium flows. The duct body constitutes a part of an air supply duct for supplying outdoor air into the room. A heat exchange unit characterized by that.

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