KR20080098860A - Drying apparatus - Google Patents

Abstract

A drier again can enhance a heat recovery rate by re-blowing a part of high temperature air ejected after the drying procedure of an object to-be-dried to the object to-be-dried with a ventilation fan. A drier includes a cabinet(200) in which a space part(201) to receive an object to-be-dried, a door which is established in the cabinet to be opened and closed; a drying and ventilating unit(220) in which an intake/exhaust passage in which an intake/exhaust fan is installed is formed and a heater is installed in the intake passage, and which blows the air inhaled through the intake fan into the space part inside after heating the air with the heater in order to dry an object to-be-dried and discharges the high temperature and high humidity air which is generated in the drying procedure with the exhaust fan; a sensible heat exchanger(20) installed in the cross section of the intake/exhaust passage and performing sensible heat exchange between the air passing through the intake/exhaust passage; and a controller controlling the operation of the heater and the intake/exhaust fan.

Description

Drying apparatus {Drying apparatus}

1 is a perspective view showing a dryer according to an embodiment of the present invention.

Figure 2 is a perspective view showing in detail the cabinet internal structure of the dryer shown in FIG.

Figure 3 is a detailed view showing the internal structure of the dry ventilation device shown in FIG.

Figure 4 is a state of use of the dryer according to the invention.

5 is a cross-sectional view showing a dryer according to another embodiment of the present invention.

6 is a use state diagram showing an example in which the dryer according to the present invention is applied to a washing machine.

*** Explanation of symbols for the main parts of the drawing ***

10 body 14: condensate tray

20: sensible heat exchanger 200: cabinet

201: space part 202: partition wall part

203: vent 204: air circulation passage

205: opening 220: dry ventilation device

231,232: Intake / Exhaust Pipe 233, 234: Exhaust / Intake Guide

235: branch pipe 250: blowing fan

a, b: intake passage c, d: exhaust passage

The present invention relates to a dryer, and more particularly, to a dryer that can quickly and quickly dry a dry matter inside the dryer, improve thermal efficiency and minimize energy consumption.

When the laundry is dried in a washing machine having a conventional drying function, it takes a long time to dry the wet laundry overlapping each other, and there is a disadvantage in that a lot of wrinkles occur in the clothes during drying, and thus a better independent clothes dryer is required.

Such a prior art that can dry the laundry of the washing machine including a drying function, there are a number of dogs, such as Korean Patent Publication Nos. 10-382524, 10-0382505, 10-0418900. Dryers having a drying function in such a washing machine are only slightly different in form and function, and all of them adopt the method of directly applying hot air to the internal contents and drying them. Therefore, power is supplied to hot air means such as a coil and a heater. It was a problem that a relatively large amount of power is consumed in the hundreds to thousands of Watts (Watts) to dry the clothes by blowing a continuous hot air.

For the same reason, an independent dryer that can dry laundry separately from a washing machine has been used. Such a conventional clothes dryer includes a cabinet, a cabinet door, a hanger, a heater, a fan, and an air vent that can heat the air inside the cabinet. It functions independently of the washing machine.

However, in the conventional clothes dryer as described above, the air sucked into the dryer hits the clothes and is dispersed only in a part of the space, and the drying of the clothes was not evenly performed efficiently because there was a limit to move smoothly throughout the dryer. And dry the laundry by blowing the air of high temperature (70 ~ 80 ℃) through the heater inside the closed dryer space. There was a problem such as low thermal efficiency by consumption.

The present invention is to solve the above problems, an object of the present invention is to continuously exhaust the high temperature and humidity air generated in the drying process of the dry to the outside through the exhaust fan to ventilate at the same time the suction, By installing the sensible heat exchanger at the intersection of the exhaust passages, the sensible heat exchange is performed between the incoming and outgoing air, so that the dry items can be dried quickly and quickly, and at the same time, the energy efficiency of the dryer can be improved by minimizing the energy consumption. In providing a dryer.

In addition, the present invention by supplying a large amount of air to the dry matter using a blower fan at a high speed to dry and at the same time by continuously ventilating the high temperature and high humidity air after the drying process to the outside by using an exhaust turbo fan It is to provide a dryer that can lower the humidity of the interior to dry quickly and quickly in the relatively low temperature conditions, thereby minimizing energy consumption by reducing the heat consumption by the heater.

In addition, the present invention is to provide a dryer to maximize the thermal efficiency by increasing the heat recovery rate by allowing some of the high-temperature air discharged through the drying process of the dry object to be blown back to the dry object using a blower fan to dry. have.

In order to achieve the above object, a dryer according to the present invention includes a cabinet in which a space part in which a dry object is stored is formed; A door installed in the cabinet so as to be opened and closed; An intake and exhaust passage in which an intake and exhaust fan is installed is formed, and a heater is installed in the intake passage, and the air sucked through the intake fan is heated by the heater and then blown into the space part to dry the dried object. A drying ventilator for drying and venting the hot and humid air generated during the drying process to the outside through the exhaust fan continuously; A sensible heat exchanger installed at a portion at which the intake and exhaust passages intersect and allowing sensible heat exchange between the air passing through the intake and exhaust passages; And a control unit for controlling the operation of the intake and exhaust fan and the heater.

At this time, the inside of the cabinet, the partition portion for partitioning the air circulation passage in communication with the exhaust passage of the drying ventilator and the space portion in which the object to be dried; A ventilation hole formed in the partition wall portion to allow air to enter and exit between the space portion and the air circulation passage; A blower fan installed in the partition wall to forcely blow a portion of air sucked along the intake passage and air discharged from the space to be circulated along the air circulation passage into the space; And an exhaust guide pipe communicating with the exhaust passage and guiding air circulated along the inside of the air circulation passage to the exhaust passage side.

On the other hand, the inside of the cabinet, the partition portion for partitioning the space to accommodate the object to be dried and the air circulation passage communicating with the exhaust passage of the dry ventilation device; A ventilation hole formed in the partition wall portion to allow air to enter and exit between the space portion and the air circulation passage; An intake guide tube communicating with the intake passage and the space portion and guiding the air sucked through the intake passage into the space portion; An exhaust guide tube communicating with the exhaust passage and guiding air circulated along the inside of the air circulation passage to the exhaust passage side; And a branch pipe branched from the intake guide pipe so that a part of the air discharged from the space part and circulated along the air circulation passage may be introduced back into the space part.

In this case, a condensate treatment unit for collecting and discharging condensate generated in the sensible heat exchange process by the sensible heat exchanger may be further provided on the exhaust passage.

In addition, the condensate treatment unit, a tray for collecting the condensate generated in the sensible heat exchange process; The condensate collected in the tray may be configured to include a condensate pipe to be guided and drained to the outside.

On the other hand, one side edge portion of the sensible heat exchanger is supported by the inner surface of the main body and the other edge portion is supported by a partition wall partitioning the intake, exhaust passage, the inside of the plurality of intake, exhaust passage communicating with the intake, exhaust passage respectively A furnace is formed, and an impermeable heat exchange membrane may be installed at the boundary between the intake and exhaust passages.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view showing an external structure of a dryer according to an embodiment of the present invention, Figure 2 is a perspective view showing in detail the internal structure of the cabinet of FIG. In addition, Figure 3 is a detailed view showing a detailed structure of the dry ventilation apparatus according to the present invention, Figure 4 is a state diagram showing the air circulation process inside the dryer according to the present invention.

1 to 4, a dryer according to the present invention includes a cabinet 200 having a space 201 in which a laundry in a laundry state, which is a dry item, is stored, and a front portion of the cabinet 200. In and out of the door 210 is installed to open and close, the intake and exhaust passages (a, b) (c, d) provided with the intake, exhaust turbo fan 12, 11 is formed, the intake passage (b) The heater 30 is installed, and the air sucked through the intake turbo fan 12 is heated by the heater 30 and blown into the space 201 to dry the washed clothes and In addition, the drying ventilation device 220 to allow the high temperature and high humidity air generated in the drying process to be continuously discharged to the outside through the exhaust turbo fan (11), and the intake, exhaust turbo fan (12) (11) And a controller (not shown) for controlling the operation of the heater 30.

Inside the cabinet 200, a partition portion 201 partitioning the air circulation passage 204 communicating with the space 201 in which the washed clothes are stored and the exhaust passages c and d of the drying ventilation apparatus 220 ( 202 and the ventilation hole 203 formed in the partition 202 so that the air flows in and out between the space 201 and the air circulation passage 204, and is installed in the partition 202 Forcibly blowing air sucked along the intake passages (a, b) and a portion of the air discharged from the space 201 and circulated along the air circulation passage 204 into the space 201. An exhaust guide pipe 233 is installed in communication with the blowing fan 240 and the exhaust passages c and d and guides air circulated along the inside of the air circulation passage 204 toward the exhaust passages c and d. It is.

The dry ventilation device 220 is connected to the cabinet 200 through an intake pipe 231 and an exhaust pipe 232, and the exhaust pipe 232 is an exhaust guide pipe 233 disposed inside the cabinet 200. And form a structure connected to each other.

The partition 202 forms a structure spaced a predetermined distance from one side of the inner surface of the cabinet 200 and partitions the space 201 and the air circulation passage 204.

The partition wall portion 202 is composed of an upper plate and a lower plate, and side plates connecting the upper and lower plates to each other. A circular opening 205 is formed at the center of the upper plate, and a dry ventilation is provided at the opening 205. A blowing fan 240 is installed to force air sucked into the cabinet 200 through the apparatus 220 into the partition 202 in which the clothes are stored.

The exhaust guide pipe 233 is connected from the end of the exhaust pipe 232 to maintain a level with the top plate of the partition 202 and extends to the periphery of the vertical passage of the air circulation passage 204.

In the partition 202, a hanger is installed to hang clothes in a laundry state, and the hanger is installed in two stages while maintaining a predetermined distance between the upper and lower parts.

In addition, a plurality of vent holes 203 formed in a circular shape are formed at one side of the lower plate of the partition 202 so that the air in the space 201 is discharged onto the air circulation passage 204.

Therefore, the hot air introduced into the cabinet 200 through the intake pipe 231 is blown to the space 201 through the blower fan 240 to go through the drying process of the clothing, and the space 201. The air that has undergone the drying process is discharged to the air circulation passage 204 through the vent hole 203. Some of the discharged air is introduced into the space 201 through the blowing fan 240 again. After going through a circulation process, the remaining part is introduced into the exhaust guide pipe 233 is exhausted to the outside through the exhaust passage (c, d) of the dry ventilation device 220.

In the part where the intake and exhaust passages (a, b) (c, d) intersect each other in the drying ventilation apparatus 220, between the air passing through the intake and exhaust passages (a, b) (c, d) A sensible heat exchanger 20 is installed to allow sensible heat exchange.

The dry ventilation device 220 is formed in the intake passage (a, b) and the exhaust passage (c, d) in the inner space and heat exchange the air entering and exiting through the sensible heat exchanger 20 by the sensible heat exchanger (20) The cabinet 10 in communication with the main body 10 and the intake passages 71 and 231 and the exhaust passages c and d through which the outside air is suctioned and communicated with the intake passages a and b of the main body 10. Exposed exhaust pipe (72, 232) is carried out by the indoor air exhaust.

On the intake passages (a, b) of the main body 10, an intake turbo fan 12 for forcibly sucking external air, and a heater for heating the air sucked through the intake turbo fan 12 to a predetermined temperature 30 is provided, and an exhaust turbo fan 11 for forcibly evacuating the air inside the cabinet 200 is provided on the exhaust passage c of the main body 10.

In addition, the exhaust passage (d) is further provided with a condensate treatment unit for collecting and discharging the condensate generated in the sensible heat exchange process by the sensible heat exchanger (20).

The condensate treatment unit includes a condensate tray 14 for collecting condensate generated in the sensible heat exchange process, and a condensate tube 77 for condensate collected in the condensate tray 14 to be guided and drained to the outside. .

In addition, the present invention includes a control unit (not shown) for controlling the operation of the intake and exhaust turbo fan (12, 11) and the heater 30, and a control controller (not shown) for remote control of the control unit It is installed.

The dry ventilation device 220 configured as described above operates the control controller to intake and heat the outside air, and blows it into the cabinet 200 to dry the laundry, and at the same time, the high temperature air that has undergone the drying process to the outside of the dryer. The drying function and the air circulation function to exhaust the air can be performed together.

The main body 10 has a rectangular case shape, and the upper surface portion has a structure in which a door (not shown) is coupled to open and close from the outside. At this time, the upper door has a structure that can be opened and closed to the left and right, the intake, exhaust turbo fan 12, 11, the heater 30 and the filter 41 mounted inside the main body 10 through the door; 42) The back can be replaced freely.

Intake passages (a, b) and exhaust passages (c, d) of the main body 10 are formed to cross in a diagonal direction in the inner space of the main body 10, the sensible heat exchanger 20 is installed in the cross section do. At this time, the sensible heat exchanger 20 is a plate-shaped sensible heat exchanger, the front and rear edges thereof are supported by the inner wall surface of the main body 10, the left and right edges of the intake passage (a, b) and the exhaust passage (c) It is a structure supported by the partition which partitions and d).

In the heat exchanger 20, a plurality of intake passages (not shown) communicating with the intake passages a and b and a plurality of exhaust passages (not shown) communicating with the exhaust passages c and d are formed. The heat exchange membrane which is excellent in heat conduction efficiency is provided in the boundary part of the said intake path and the exhaust path.

The heat exchange membrane is made of a thin plate made of an impermeable material which is impossible to pass water vapor, by allowing sensible heat exchange to allow heat exchange between the air entering and exiting the heat exchange membrane between them while preventing exchange of water vapor. It is possible to dry the dry matter quickly and quickly using dry air without moisture.

In addition, considering that the temperature of the air entering and exiting the intake and exhaust passages (a, b) (c, d) during the sensible heat exchange process is a low temperature (30 ~ 50 ℃) is not relatively high, It is also possible to apply it as an impermeable heat exchange membrane made of synthetic resin that is not easily deformed by heat. This has the advantage of reducing the overall weight and manufacturing cost of the device.

Therefore, the indoor air inside the cabinet 200 and the outside air outside the bathroom are subjected to heat exchange with each other while passing through the sensible heat exchanger 20 during the operation of the dry ventilation device 220. The energy of the indoor air exhausted to the outside is recovered, and the recovered energy is absorbed into the outdoor air supplied from the outside and supplied to the inside of the cabinet 200 again to increase the thermal efficiency to dry the laundry more quickly and quickly. To be done.

As the heater 30 installed in the intake passage b, a PTC heater (Positive Temperature Coefficient heater) is preferably employed.

The intake pipe 71 for sucking the outside air and the exhaust pipe 73 for exhausting the indoor air inside the cabinet 200 are formed to be connected to each other in the building, which is in communication with the outside, or directly to the outside of the building. .

The plate-type sensible heat exchanger 20 generates condensed water while condensing the humid air exhausted in the process of sensible heat exchange of the air intaken and exhausted into and out of the cabinet 200, and the sensible heat exchange in the exhaust passage d. A condensate tray 14 for receiving and collecting condensate generated in the process is provided.

At this time, the condensate tray 14 is sized to correspond to the inclined surface of the plate-shaped slope of the sensible heat exchanger 20 so that all the condensate falling from the inclined surface of the sensible heat exchanger 20 can be processed. 14 is connected to the condensate pipe 77 in communication with an external vertical drainage pipe 4 so that the condensate collected in the condensate tray 14 passes through the condensate pipe 77 and passes through the vertical drainage pipe 4. It is being discharged to the outside with other wastewater flowing along.

The main body 10 is provided with a filter (41, 42) to remove the foreign matter combined in the air sucked and discharged through the intake, exhaust passage (a, b) (c, d).

At this time, it is preferable that the filters 41 and 42 are installed to completely cover the inclined surfaces of the plate-shaped sensible heat exchanger 20.

In the dryer of the present invention, a temperature sensor and a humidity sensor for sensing the temperature and humidity inside the cabinet 200 may be installed. The temperature sensor and the humidity sensor may operate the dry ventilation device 220. It can be configured to connect with a remote control controller.

Hereinafter, the operation of the present invention will be described.

First, the outside air sucked along the intake passages (a, b) by the operation of the intake turbo fan 12 of the dry ventilation device 220 is heated to a predetermined temperature by the heater 30, the partition wall portion 202 The air is blown into the space part 201 through which the clothes are stored through the blowing fan 240 in the upper portion, thereby drying the clothes by the hot air. Then, the high temperature and humid air inside the drying process is discharged to the air circulation passage 204 through the air vent 203 in the lower portion of the partition 202, and part of the air passes through the blowing fan 240. It is introduced into the space 201 again to circulate and dry the dry matter, and the remaining part is introduced into the exhaust guide pipe 233 by the operation of the exhaust turbo fan 11, and then the exhaust passages c and d are opened. Afterwards, it is discharged out of the dry ventilation system. At this time, in the sensible heat exchange process by the sensible heat exchanger 20, the energy contained in the hot air discharged to the outside through the exhaust passage (c, d) is recovered, and the recovered energy is the intake passage (a, b) Since the process of being absorbed again by the outside air sucked through to minimize the energy loss, the drying operation of the drying object is made to effect more quickly and quickly.

At this time, when performing the drying process of the washed clothes, the temperature inside the space 201 is preferably performed to maintain 40 ~ 50 ℃.

In addition, the condensed water generated in the sensible heat exchange process of the air exhausted to the outside through the sensible heat exchanger 20 is collected in the condensed water tray 14 installed at the lower portion of the exhaust passage d and discharged to the outside through the condensed water pipe 77. Will be.

In addition, the blowing fan 240 installed on the upper part of the partition 202 allows convection inside the space 201 to easily occur, and quickly supplies the outside air into the space 201 to wash the clothes. By allowing the air to be blown in, the drying operation of the building is performed quickly.

Meanwhile, FIG. 5 illustrates a dryer structure according to another embodiment of the present invention. As shown in FIG. 5, the dryer according to the second embodiment of the present invention accommodates the laundry in which the inside of the cabinet 200 is stored. A partition 202 for partitioning the air circulation passage 204 which communicates with the space 201 and the exhaust passages c and d of the drying ventilation apparatus 220, and the space 201 and the air circulation. The ventilation hole 203 formed in the partition 202 so that the air flows in and out between the passage 204 and the intake passages (a, b) and the space portion 201 and communicates with the intake passage (a and an intake guide tube 234 for guiding the air sucked through the air into the space part 201 and the exhaust passages c and d and circulated along the inside of the air circulation passage 204. The air circulation is exhausted from the exhaust guide pipe 233 and the space portion 201 for guiding air to the exhaust passages c and d. Some of the air circulating along a (204) is configured to include a manifold 235 which is installed from the branch intake air guide pipe 234, the space portion 201 so as to be again introduced into the.

In the second embodiment of the present invention, the intake guide pipe 234 is installed at the end of the intake pipe 231 connected to the dry ventilation device 220 so as to be connected to the intake passages a and b and the space 201. In addition, the air sucked through the dry ventilation device 220 is directly introduced into the space 201 through the intake pipe 231. In addition, by forming a branch pipe 235 on one side of the intake guide pipe 234, the air circulation passage 204 by the flow rate of the air flowing into the space 201 along the intake guide pipe 234 Part of the air discharged into the phase is introduced into the space 201 again through the branch pipe 235 to undergo a continuous drying process.

At this time, in the second embodiment of the present invention, since the outside air flows directly into the space portion 201 through the intake guide tube 234, the blower fan of the first embodiment described above is not necessary, and therefore, In addition, the configuration of the device can be configured more simply than the first embodiment described above, and there is an effect that the cost of manufacturing can be reduced.

6 is a perspective view illustrating an example in which the dryer of the present invention is installed in combination with a washing machine. As can be seen in Figure 6 the dryer of the present invention can be used in combination with the upper part of the washing machine 300, by putting the laundry washed through the washing machine 300 directly into the dryer located at the top, drying, Since a series of operations can be performed in one place, convenience is improved, and drying can be performed quickly and quickly and the wrinkles of the laundry can be minimized as compared to when washing and drying operations are performed at the same time in a conventional washing machine. Space utilization by the combination of the washing machine and the dryer can be improved.

The present invention described above has been described with reference to the dryer used for drying a typical garment as an embodiment, in addition to that can be used to apply the same to the drying operation of the dry matter having various forms such as food, agricultural and marine products or drugs Reveal.

In the dryer of the present invention having the above-described configuration, the sensible heat exchanger is installed at a portion where the intake and exhaust passages of the dry ventilation device cross each other, so that the sensible heat exchange is performed between the air passing through the intake and exhaust passages. It has the effect of minimizing energy loss by increasing the heat recovery rate.

In addition, by blowing a large amount of air into the space part at a high speed by using a blower fan, the humidity inside the space part by continuously exhausting and ventilating the hot and humid air that has been dried to the outside using the exhaust turbo fan. By lowering the dry matter can be dried quickly and quickly even at a relatively low temperature (30 ~ 50 ℃) conditions, the heat consumption by the heater is also reduced, there is an excellent effect that can significantly reduce the energy consumption by the heater.

In addition, since some of the hot air discharged through the drying process of the dry matter is blown back to the dry matter by using a blower fan and dried, the heat recovery rate can be increased to maximize the thermal efficiency.

In addition, by installing a separate blower fan for increasing the air volume and the wind speed of the air sucked in the upper part of the partition wall, the drying operation can be performed quickly and quickly to obtain an effect of increasing the drying efficiency.

In addition, since the dryer of the present invention has a structure of drying using low temperature air, the temperature transmitted through the heat exchange membrane is relatively low even in the sensible heat exchange process of the air entering and exiting the intake and exhaust passages, and thus, a thin plate form. For example, a thin plate-type heat exchanger film made of synthetic resin can be sufficiently applied, thereby reducing the weight and manufacturing cost of the device.

In addition, when the heat exchange membrane installed inside the sensible heat exchanger is adopted as an impermeable heat exchange membrane made of thin synthetic resin, the heat (temperature) is exchanged in the sensible heat exchange process by the heat exchange membrane, but moisture is not exchanged. It is possible to dry the dry matter quickly and quickly by using a relatively dry low temperature air which is not included, and thus an effect of remarkably improving the drying efficiency of the dry matter can be obtained.

In addition, when the dryer of the present invention is applied to a washing machine, the laundry washed through the washing machine can be put directly into the dryer and dried, so that a series of operations of washing and drying can be performed in one place, thereby improving convenience. Compared to the case of washing and drying at the same time in the conventional washing machine, the drying can be performed quickly and quickly, the wrinkles of the laundry can be minimized, and the space utilization by the combination of the washing machine and the dryer can be improved. There is.

Claims (6)

A cabinet having a space in which the object to be stored is stored; A door installed in the cabinet so as to be opened and closed; An intake and exhaust passage in which an intake and exhaust fan is installed is formed, and a heater is installed in the intake passage, and the air sucked through the intake fan is heated by the heater and then blown into the space part to dry the dried object. A drying ventilator for drying and venting the hot and humid air generated during the drying process to the outside through the exhaust fan continuously; A sensible heat exchanger installed at a portion at which the intake and exhaust passages intersect and allowing sensible heat exchange between the air passing through the intake and exhaust passages; And Dryer comprising a control unit for controlling the operation of the intake, exhaust fan and the heater. The method of claim 1, wherein the interior of the cabinet, A partition wall portion for partitioning an air circulation path communicating with a space part in which the object to be dried is stored and an exhaust path of the dry ventilation device; A ventilation hole formed in the partition wall portion to allow air to enter and exit between the space portion and the air circulation passage; A blower fan installed in the partition wall to forcely blow a portion of air sucked along the intake passage and air discharged from the space to be circulated along the air circulation passage into the space; And And an exhaust guide pipe communicating with the exhaust passage and guiding air circulated along the inside of the air circulation passage to the exhaust passage side. The method of claim 1, wherein the interior of the cabinet, A partition wall portion for partitioning an air circulation path communicating with a space part in which the object to be dried is stored and an exhaust path of the dry ventilation device; A ventilation hole formed in the partition wall portion to allow air to enter and exit between the space portion and the air circulation passage; An intake guide tube communicating with the intake passage and the space portion and guiding the air sucked through the intake passage into the space portion; An exhaust guide tube communicating with the exhaust passage and guiding air circulated along the inside of the air circulation passage to the exhaust passage side; And And a branch pipe branched from the intake guide pipe so that a part of the air discharged from the space part and circulated along the air circulation passage can be introduced back into the space part. The dryer according to claim 2 or 3, wherein a condensate treatment unit for collecting and discharging condensate generated in the sensible heat exchange process by the sensible heat exchanger is further provided on the exhaust passage. The method of claim 4, wherein the condensate treatment unit, A tray for collecting condensate generated in the sensible heat exchange process; And a condensate tube configured to drain the condensate collected in the tray to the outside. According to claim 2 or 3, wherein one side edge portion of the sensible heat exchanger is supported on the inner surface of the main body and the other edge portion is supported by a partition wall partitioning the intake, exhaust passage, the inside of the intake, exhaust passage and And a plurality of intake and exhaust passages communicating with each other, and an impermeable heat exchange membrane is installed at the boundary between the intake and exhaust passages.

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