JP2002276998A - Desiccant dehumidifier - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a desiccant dehumidifier capable of supplying the air at a low temperature and low humidity indoors at low driving energy consumption. SOLUTION: This desiccant dehumidifier has a total heat exchanger 9 exchanging the total heat of sensible heat and latent heat between the air passing through a primary side 9a and the air passing through the secondary side 9b and a dehumidifying rotor 1 allowing a dehumidifying agent to absorb moisture at the primary side 1a to dehumidify the air passing through the primary side 1a and releasing moisture from the dehumidifying agent for regeneration by the exposure to heated air at the secondary side 1b. A supply air path 3 is provided in such a manner that outdoor air is supplied indoors through the primary side 9a of the total heat exchanger 9 and the primary side 1a of the dehumidifying rotor 1 in order. An exhaust air path 10 is provided in such a manner that indoor air is exhausted outdoors through the secondary side 2b of the total heat exchanger 9. A heated air path 4 is provided in such a manner that the heated air heated by a heat source is exhausted outdoors through the secondary side 1b of the dehumidifying rotor 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a desiccant dehumidifier using the dehumidifying action of a dehumidifier.

[0002]

2. Description of the Related Art In a conventional desiccant dehumidifier, dehumidification is mainly performed by a dehumidifying rotor 1 as shown in FIG. The dehumidifying rotor 1 is provided with a dehumidifying agent mounted on a disk 2 that is slowly driven to rotate at a constant speed. By applying heated air on the secondary side 1b of the rotor 1, moisture is released from the dehumidifier to regenerate. An air supply path 3 is provided so that outdoor air is supplied into the room through the primary side 1a of the dehumidifying rotor 1, and the heated air heated by the heater 5 such as a hot water coil is supplied to the dehumidifying rotor 1 A heated air path 4 is provided so as to be exhausted to the outside through the next side 1b.

When the fan 13 is driven to supply air from the air supply path 3 and the fan 14 is driven to supply heated air to the heated air path 4, the air supplied from the outside is removed by the dehumidification rotor 1
The dehumidifier is dehumidified by being absorbed by the dehumidifier by passing through the primary side 1a, and the dehumidified low-humidity air is supplied indoors, while the heated air flowing through the heated air path 4 is supplied to the secondary of the dehumidifier rotor 1. Regeneration is performed by hitting the side 1b so as to release moisture from the dehumidifier. Primary side 1a of dehumidifying rotor 1 as described above
Although the air supply is dehumidified by absorbing moisture by passing through the dehumidifier, if it is dehumidified only by the dehumidifier as described above, it cannot be sufficiently dehumidified, or the supply air temperature rises due to the reaction heat at the time of dehumidification There is a problem.

In order to solve this problem, a structure as shown in FIGS. 7 and 8 has been conventionally provided. In FIG. 7, a cooler 6 is disposed in the air supply path 3 before the primary side 1 a of the dehumidifying rotor 1. The cooler 6 cools using cooling water or cold water. In this way, when the air supplied from the outdoor passes through the cooler 6, the air is cooled and dehumidified by dew condensation, and the air is further dehumidified by passing through the primary side 1a of the dehumidifying rotor 1. The air having a lower temperature and a lower humidity than that of only the dehumidifying rotor 1 is supplied into the room.

FIG. 8 shows a sensible heat exchange rotor 7 in addition to the dehumidification rotor 1. This sensible heat exchange rotor 7
Similarly to the dehumidifying rotor 1, the heat-storing disk slowly rotates at a constant speed to transfer heat from the primary side 7a to the secondary side 7b. An air supply path 3 is provided so that the outdoor air is supplied into the room through the primary side 1a of the dehumidifying rotor 1 and the primary side 7a of the sensible heat exchange rotor 7, and the indoor air is exchanged with the sensible heat. The heated air path 4 is provided so that the air is exhausted to the outside through the secondary side 7b of the rotor 7 and the secondary side 1b of the dehumidifying rotor 1. Sensible heat exchange rotor 7
A heater 5 such as a hot water coil is provided in the middle of the heating air path 4 between the heater and the dehumidifying rotor 1.

When the outdoor air is supplied from the air supply path 3, it is dehumidified through the primary side 1a of the dehumidifying rotor 1, cooled through the primary side 7a of the sensible heat exchange rotor 7, and dehumidified. Cooled air is supplied to the room. On the other hand, when the indoor air passes through the heating air path 4, the sensible heat exchange rotor 7
Is heated through a secondary side 7b, and further heated through a heater 5 such as a hot water coil. The heated air passes through the secondary side 1b of the dehumidifying rotor 1 to heat the secondary side 1b. The dehumidifier is regenerated. For example, when outside air having a temperature of 35 ° C. and an absolute humidity of 20 g / kg DA (dry air) is supplied from outside the room, when the air passes through the primary side 1a of the dehumidifying rotor 1, the temperature becomes 32 ° C. and the absolute humidity becomes 10 g / kg DA. After passing through the primary side 7a of the exchange rotor 7, the temperature becomes 55 ° C. and the absolute humidity becomes 10 g / kg DA. On the other hand, when air at 30 ° C. in the room flows into the heating air path 4 and passes through the secondary side 7 b of the sensible heat exchange rotor 7, the temperature becomes 50 ° C., and is heated to 80 ° C. through the heater 5 such as a hot water coil. , 80 ° C. is supplied to the secondary side 1b of the dehumidifying rotor 1 to regenerate the dehumidifying agent.

[0007] In FIG. 7, by providing a cooler 6 in addition to the dehumidifying rotor 1, low-temperature and low-humidity air can be supplied into the room, but a large amount of driving energy is required for cooling by the cooler 6. There is a problem. In the case of FIG. 8, low-temperature air can be supplied into the room by providing the sensible heat exchange rotor 7 in addition to the dehumidification rotor 1, but the humidity cannot be sufficiently reduced. That is, although the temperature can be reduced by providing the sensible heat exchange rotor 7, there is a problem that the humidity cannot be reduced sufficiently because the humidity can be reduced only by the dehumidifying rotor 1.

The present invention has been made in view of the above description, and has as its object to provide a desiccant dehumidifier capable of supplying low-temperature, low-humidity air to a room with little drive energy consumption.

[0009]

In order to solve the above-mentioned problems, a desiccant dehumidifier according to the present invention exchanges total heat of sensible heat and latent heat between air passing through a primary side 9a and air passing through a secondary side 9b. And the secondary heat exchanger 9 which dehumidifies the air passing through the primary side 1a by absorbing moisture into the dehumidifier on the primary side 1a.
a dehumidifying rotor 1 for dehumidifying and regenerating the dehumidifying agent by applying heated air in b, and outdoor air passes through the primary side 9a of the total heat exchanger 9 and the primary side 1a of the dehumidifying rotor 1. An air supply path 3 is provided so that air is supplied into the room sequentially.
An exhaust path 10 is provided so that indoor air is exhausted to the outside through the secondary side 9b of the total heat exchanger 9, and heated air heated by a heat source passes through the secondary side 1b of the dehumidifying rotor 1. The heating air path 4 is provided so as to be exhausted outside the room.

With the above configuration, the outdoor air supplied to the air supply passage 3 is supplied to the primary side 9 of the total heat exchanger 9.
a, the total heat exchange (sensible heat exchange and latent heat exchange) with the room air exhausted through the exhaust path 10 lowers the temperature of the supplied air and the humidity, thereby reducing this air. Is further dehumidified by passing through the primary side 1a of the dehumidifying rotor 1, the temperature is reduced by the total heat exchanger 9, and the humidity is reduced by double dehumidification by the total heat exchanger 9 and the dehumidifying rotor 1. By being lowered, low-temperature, low-humidity air can be supplied to the room. Moreover, since the temperature of the air supply is lowered by passing through the total heat exchanger 9 before passing through the dehumidification rotor 1, the relative humidity of the air supply increases before passing through the dehumidification rotor 1, and the amount of dehumidification increases by the dehumidification rotor 1. The humidity of the air supplied into the room can be further reduced. Further, even if the total heat exchanger 9 is provided, the driving energy is hardly consumed and a large amount of driving energy is not required unlike the conventional example using the cooler.

It is also preferable that a combustion exhaust gas of a heat source such as an air conditioner or a boiler for cooling and heating is passed through the heating air path 4 to heat the secondary side 1b of the dehumidifying rotor 1. In this case, the heat of the combustion exhaust gas originally discarded can be used to regenerate the dehumidifying rotor 1 and energy can be saved.

The air passing through the primary side 11a is
A heat recovery unit 11 for recovering sensible heat into the air passing through 1b, and the outdoor air is supplied to the primary side 9a of the total heat exchanger 9, the primary side 1a of the dehumidifying rotor 1, and the primary side of the heat recovery unit 11. 11a so that the air is supplied into the room through the air supply path 11a.
Is provided, and indoor air is supplied to the secondary side 9b of the total heat exchanger 9;
It is also preferable that an exhaust path 10 is provided so that the exhaust gas passes through the secondary side 11b of the heat recovery unit 11 and is exhausted to the outside of the room.

In this case, the total heat exchanger 9
The air in the room that has passed through the secondary side 9b passes through the secondary side 11b of the heat recovery unit 11, and the air that has passed through the primary side 1a of the dehumidifying rotor 1 in the air supply path 3 is the primary side 11a of the heat recovery unit 11. , Heat is recovered by sensible heat exchange in the heat recovery unit 11, and further low-temperature air is supplied into the room.

The air passing through the primary side 11a is
A heat recovery unit 11 for recovering sensible heat into the air passing through 1b, and the outdoor air is supplied to the primary side 9a of the total heat exchanger 9, the primary side 1a of the dehumidifying rotor 1, and the primary side of the heat recovery unit 11. 11a so that the air is supplied into the room through the air supply path 11a.
Is provided, and indoor air is supplied to the secondary side 9b of the total heat exchanger 9;
The secondary side 11b of the heat recovery unit 11, the heating air path 4
And an exhaust path 10 is provided so as to be exhausted to the outside of the room by passing the exhaust gas to the outside, and the combustion exhaust gas is supplied to the heating air path 4 between the secondary side 11b of the heat recovery unit 11 and the secondary side 1b of the dehumidifying rotor 1. Is preferably supplied. Also in this case, the indoor air that has passed through the secondary side 9b of the total heat exchanger 9 in the exhaust path 10 is
1b, the primary side 1a of the dehumidifying rotor 1 in the air supply path 3
Passes through the primary side 11a of the heat recovery unit 11,
The heat recovery is performed by the sensible heat exchange in the heat recovery unit 11, so that low-temperature air is supplied into the room. Further, the air flowing through the heated air path 4 and the air flowing through the exhaust path 10 can be blown by the same fan, and the number of fans for blowing can be reduced.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS First, an example of the embodiment shown in FIG. 1 will be described. In the case of this example, the dehumidifying rotor 1 and the total heat exchanger 9
And The dehumidifying rotor 1 is provided with a dehumidifying agent mounted on a disk that is slowly driven to rotate at a constant speed. The dehumidifying agent absorbs moisture on the primary side 1a of the dehumidifying rotor 1 to dehumidify air passing through the primary side 1a. By applying heated air on the secondary side 1b, the air is released from the dehumidifier and regenerated. The total heat exchanger 9 exchanges total sensible heat and latent heat between air passing through the primary side 9a and air passing through the secondary side 9b. Such a total heat exchanger 9 includes a total heat exchange rotor and a static total heat exchanger. The total heat exchange rotor also exchanges total heat of sensible heat and latent heat between the primary side and the secondary side by rotating the disk slowly at a constant speed. That is, not only heat but also moisture can move between the primary side and the secondary side. The stationary total heat exchanger is divided between the primary air passage and the secondary air passage by a moisture-permeable partition through which moisture and heat can move, and between the primary and secondary air passages. Then, heat and humidity move, so that total heat of sensible heat and latent heat can be exchanged.

An air supply path 3 for supplying outdoor air into the room is provided so as to extend from the outdoor to the room through the primary side 9a of the total heat exchanger 9 and the primary side 1a of the dehumidifying rotor 1. A fan (not shown) for blowing air is arranged in the middle of the path 3. An exhaust path 10 for exhausting indoor air to the outside is provided so as to pass from the room to the outside through the secondary side 9b of the total heat exchanger 9, and a fan (not shown) that blows air in the middle of the exhaust path 10 Is arranged. The heating air path 4 for sending the heating air is provided so as to extend from the outdoor to the outdoor through the secondary side 1b of the dehumidifying rotor 1, and a fan (not shown) for blowing air is disposed in the heating air path 4. In addition, a heater 5 such as a hot water coil for heating the air flowing through the heating air passage 4 is provided.

When the fan is driven to supply outdoor air into the room through the air supply path 3, the indoor air is exhausted outside through the exhaust path 10, and the heated air flows through the heated air path 4.
Air is supplied from outside to the primary side 9 of the total heat exchanger 9 in the air supply path 3.
a, air is supplied into the room through the primary side 1a of the dehumidifying rotor 1 in order, and air is exhausted from the room through the exhaust passage 10 to the outside through the secondary side 9b of the total heat exchanger 9, and the outdoor air is discharged. Heater 5 such as a hot water coil and dehumidifying rotor 1 in heated air path 4
The air is exhausted outside through the secondary side 1b. Total heat exchanger 9
In, the heat exchange of the sensible heat and the latent heat of the air passing through the primary side 9a and the air passing through the secondary side 9b is performed. However, the air passing through the secondary side 9b is air having low indoor temperature and humidity. As a result, the temperature and humidity of the high-temperature and high-humidity air passing through the primary side 9a are lowered and the humidity is lowered. Therefore, the supply air passing through the supply passage 3 is dehumidified and lowered in temperature by passing through the primary side 9a of the total heat exchanger 9. After the air passing through the air supply path 3 passes through the primary side 9a of the total heat exchanger 9, the air passes through the primary side 1a of the dehumidifying rotor 1 and is dehumidified by the dehumidifying agent. I'm bothered. On the secondary side 1b of the dehumidification rotor 1, the air heated by the heater 5 passes through the heating air path 4, and the secondary side 1b is heated to regenerate the dehumidifier.

As described above, the air passing through the air supply path 3 passes through the primary side 9a of the total heat exchanger 9 and the primary side 1a of the dehumidifying rotor 1 and is dehumidified in two stages to reduce the humidity. When the air passes through the primary side 9a of the heat exchanger 9, the relative humidity increases even when the absolute humidity of the air decreases because the temperature decreases, and the amount of dehumidification when the dehumidifying agent is used on the primary side 1a of the dehumidifying rotor 1 And the humidity of the air supplied into the room is further reduced. By providing the total heat exchanger 9 as described above, the temperature of the air supplied into the room can be lowered and the humidity can be reduced to a low level. Consumption can be reduced. For example, when the total heat exchanger 9 is a total heat exchange rotor, only the energy for rotationally driving is required.

For example, as shown in FIG. 1, outside air having a temperature of 35 ° C. and an absolute humidity of 20 g / kg DA is supplied from outside.
Room temperature 26 ° C and absolute humidity 8.4g / kgDA
When the air is exhausted, the air supplied through the primary side 9a of the total heat exchanger 9 has a temperature of 29 ° C. and an absolute humidity of 13 g / kg D
A, the air exhausted outside through the secondary side 9b of the total heat exchanger 9 has a temperature of 32.3 ° C and an absolute humidity of 15.
The air supplied to the room after passing through the primary side 1a of the dehumidifying rotor 1 has a temperature of 53.4 ° C. and a humidity of 6.5 g / kg DA.

In the embodiment of the present invention, the outdoor air is sent to the heating air passage 4, but the indoor air may be sent.

Next, an example of the embodiment shown in FIG. 2 will be described. This example is also basically the same as the above example, and only different points will be mainly described. In the case of the present example, a cooler 8 is disposed downstream of the primary side 1a of the dehumidifying rotor 1 in the air supply path 3.
The cooler 8 performs cooling using cooling water or cold water. Air that has been dehumidified by passing through the primary side 9a of the total heat exchanger 9 and the primary side 1a of the dehumidifying rotor 1 is further dehumidified and cooled by passing through the cooler 8, and is further reduced in humidity and temperature. Is supplied to the room. The heating air is passed through the heating air path 4 to the secondary side 1b of the dehumidification rotor 1 to regenerate the dehumidifier. At this time, the indoor or outdoor air is heated by the heater 5 and supplied. Alternatively, combustion exhaust gas from an air conditioner, a boiler, or the like may be supplied to the heating air path 4 to heat the secondary side 1b of the dehumidifying rotor 1. When the secondary side 1b of the dehumidifying rotor 1 is heated using the combustion exhaust gas in this way, the heat of the combustion exhaust gas that is originally discarded can be used to regenerate the dehumidification rotor 1 and energy can be saved.

Next, an example of the embodiment shown in FIG. 3 will be described. This example is basically the same as the above example, and only different points will be mainly described. In the case of this example, a heat recovery unit 11 is provided in addition to the total heat exchanger 9 and the dehumidification rotor 1. The heat recovery unit 11 exchanges sensible heat between the primary side 11a and the secondary side 11b. Examples of the heat recovery unit 11 include a sensible heat exchange rotor, a stationary heat exchanger, and a heat pipe. This heat recovery unit 1
One primary side 11a passes through an air supply path 3 and a secondary side 11b of the heat recovery unit 11 passes through a heated air path 4.

The air dehumidified by passing through the primary side 9a of the total heat exchanger 9 and the primary side 1a of the dehumidifying rotor 1 in the air supply path 3 is cooled by passing through the primary side 11a of the heat recovery unit 11. Then, low-humidity, low-temperature air is supplied into the room.
The air introduced into the heating air path 4 from the outside is supplied to the heat recovery unit 1.
1 is heated by passing through the secondary side 11b, further heated by passing through the heater 5, and the dehumidifier of the dehumidifying rotor 1 is regenerated by heated air. At this time, the secondary side 11 of the heat recovery unit 11
Since the air passing through the heating air path 4 is heated by passing through b, the amount of heat to be heated by the heater 5 can be reduced.

Although the outdoor air is introduced into the heated air passage 4 in the embodiment of the present invention, the indoor air may be introduced.

Next, an example of the embodiment shown in FIG. 4 will be described. This example is also basically the same as the above example, and only different points will be mainly described. Exhaust path 10 is used for indoor heat exchanger 1
After passing through the secondary side, the heat recovery unit 11 is provided so as to reach the outside through the secondary side 11b. Combustion exhaust gas from an air conditioner, a boiler, or the like is supplied to the heating air path 4. FIG. 4 shows only the fan 15 that blows air through the exhaust path 10 and the fan 16 that blows air through the heated air path 4.

In the case of this example, the air supplied from the outdoor in the air supply path 3 first passes through the primary side 9a of the total heat exchanger 9 and is dehumidified and cooled by total heat exchange. Next, the air passes through the primary side 1a of the dehumidifying rotor 1 to be dehumidified by the dehumidifying agent, and then passes through the primary side 11a of the heat recovery unit 11 to be exchanged by sensible heat, cooled, and supplied to the room. On the other hand, the air supplied from the room in the exhaust passage 10 firstly performs total heat exchange by passing through the secondary side 9b of the total heat exchanger 9, and then passes through the secondary side 11b of the heat recovery unit 11. The sensible heat is exchanged. The combustion exhaust gas flowing through the heated air path 4 passes through the secondary side 1b of the dehumidification rotor 1 to regenerate the dehumidifier.

In the case of this example, the primary side 1a of the dehumidifying rotor 1
After passing through, the air passes through the primary side 11a of the heat recovery unit 11 and is cooled, and low-temperature, low-humidity air is supplied into the room. Further, since the secondary side 1b of the dehumidifying rotor 1 is heated using the combustion exhaust gas, the heat of the combustion exhaust gas originally discarded can be used to regenerate the dehumidifying rotor 1 and energy saving can be achieved.

Next, an example of the embodiment shown in FIG. 5 will be described. This example is also basically the same as the above example, and only different points will be mainly described. The exhaust path 10 is provided so as to communicate with the heated air path 4 after passing through the secondary side 11 b of the heat recovery unit 11, and is connected to the secondary side 11 b of the heat recovery unit 11 and the dehumidification rotor 1.
The combustion exhaust gas is supplied to the heated air path 4 between the secondary air and the secondary side 1b. A fan 16 for blowing air is disposed in the heated air path 4.

Also in this example, the air supplied from the outside in the air supply path 3 first passes through the primary side 9a of the total heat exchanger 9 to be totally heat exchanged, dehumidified and cooled. ,
Next, the air passes through the primary side 1a of the dehumidifying rotor 1 to be dehumidified by the dehumidifying agent, and then passes through the primary side 11a of the heat recovery unit 11 to be exchanged by sensible heat, cooled, and supplied to the room. On the other hand, the air supplied from the room in the exhaust passage 10 firstly performs total heat exchange by passing through the secondary side 9b of the total heat exchanger 9, and then passes through the secondary side 11b of the heat recovery unit 11. As a result, the dehumidifier is supplied to the heating air path 4 and mixed with the combustion exhaust gas, and the heated air mixed with the combustion exhaust gas passes through the secondary side 1b of the dehumidification rotor 1 so that the dehumidifier is removed. Will be played.

In the case of this example, the blowing of the heated air path 4 and the exhaust path 10 can be shared by one fan 16, and the number of fans can be reduced as compared with the example shown in FIG.

[0031]

According to the first aspect of the present invention, the total heat exchanger and the dehumidifying rotor are provided as described above, and the outdoor air is supplied to the primary side of the total heat exchanger and the primary side of the dehumidifying rotor. An air supply path is provided so that the air is supplied to the room sequentially, and an exhaust path is provided so that the indoor air is exhausted to the outside through the secondary side of the total heat exchanger. The heated air path is provided so that the heated air passes through the secondary side of the dehumidification rotor and is exhausted to the outside, so that the outdoor air supplied to the air supply path passes through the primary side of the total heat exchanger. When the air is exhausted through the exhaust path, it is subjected to total heat exchange (sensible heat exchange and latent heat exchange) with the indoor air exhausted, thereby lowering the temperature and humidity of the supplied air. It is further dehumidified by passing through the primary side, and the temperature decreases in the total heat exchanger. It is possible to supply low-temperature, low-humidity air to the room by lowering the humidity by being dehumidified by the total heat exchanger and the dehumidification rotor, and before passing through the dehumidification rotor. Since the temperature of the air supply is lowered through the total heat exchanger, the relative humidity of the air supply increases before passing through the dehumidification rotor, and the dehumidification rotor increases the amount of dehumidification to further increase the humidity of the air supplied to the room. Even if the total heat exchanger is provided, the driving energy is hardly consumed and a large amount of driving energy is not required unlike the conventional example using a cooler.

Further, the invention of claim 2 of the present invention is directed to claim 1
In the above, since the secondary side of the dehumidification rotor is heated by passing the combustion exhaust gas of a heat source such as an air conditioner for cooling and heating and a boiler through the heating air path, the heat of the combustion exhaust gas originally discarded is used to remove the dehumidification rotor. Can be regenerated to save energy.

Further, the invention of claim 3 of the present invention is directed to claim 2
In the above, a heat recovery unit is also provided, and air is supplied so that outdoor air is supplied to the room through the primary side of the total heat exchanger, the primary side of the dehumidifying rotor, and the primary side of the heat recovery unit in order. A path is provided, and an exhaust path is provided so that the indoor air passes through the secondary side of the total heat exchanger and the secondary side of the heat recovery unit in order and is exhausted to the outside. The air in the room that has passed through the secondary side of the exchanger passes through the secondary side of the heat recovery unit, and the air that has passed through the primary side of the dehumidification rotor in the air supply path passes through the primary side of the heat recovery unit. In addition, heat is recovered by performing sensible heat exchange in the heat recovery unit, and further low-temperature air is supplied into the room.

The invention of claim 4 of the present invention provides the method of claim 3
In the above, there is also provided a heat recovery device for recovering sensible heat from the air passing through the primary side to the air passing through the secondary side, and the outdoor air is connected to the primary side of the total heat exchanger, the primary side of the dehumidifying rotor, and the heat recovery An air supply path is provided so that air is supplied into the room through the primary side of the heat exchanger in order, and the indoor air passes through the secondary side of the total heat exchanger, the secondary side of the heat recovery unit, and the heated air path. Since an exhaust path is provided so as to be exhausted to the outside of the room by passing through in order, the combustion exhaust gas is supplied to the heating air path between the secondary side of the heat recovery unit and the secondary side of the dehumidifying rotor. The air in the room that has passed through the secondary side of the total heat exchanger in the exhaust path passes through the secondary side of the heat recovery unit, and the air that has passed through the primary side of the dehumidification rotor in the air supply path is the primary air in the heat recovery unit. The heat is recovered by passing sensible heat in the heat recovery section through the side and the room is supplied with lower-temperature air. , And the addition is capable to reduce the number of fans for air flowing through the heating air path also blows air can blow air also in the same fan flowing through the exhaust passage.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating an example of an embodiment of the present invention.

FIG. 2 is a block diagram of another example of the above.

FIG. 3 is a block diagram of another example of the above.

FIG. 4 is a block diagram of another example of the above.

FIG. 5 is a block diagram of another example of the above.

FIG. 6 is a schematic perspective view of a conventional example.

FIG. 7 is a block diagram of another conventional example.

FIG. 8 is a block diagram of another conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Dehumidification rotor 3 Air supply path 4 Heated air path 9 Total heat exchanger

Claims (4)

[Claims] 1. A total heat exchanger for exchanging total heat of sensible heat and latent heat between air passing through a primary side and air passing through a secondary side, and a primary side by absorbing moisture in a dehumidifying agent on the primary side. A dehumidifying rotor that dehumidifies and regenerates the air passing therethrough by applying heated air on the secondary side and dehumidifying from the dehumidifying agent, and the outdoor air is provided on the primary side of the total heat exchanger, of the dehumidifying rotor. An air supply path is provided to sequentially supply air to the room through the primary side, and an exhaust path is provided so that room air is exhausted to the outside of the room through the secondary side of the total heat exchanger. A desiccant dehumidifier comprising a heated air path so that heated heated air passes through a secondary side of the dehumidifying rotor and is exhausted to the outside of the room. 2. A desiccant dehumidifier according to claim 1, wherein a combustion exhaust gas of a heat source such as an air conditioner or a boiler for cooling and heating is passed through the heating air path to heat a secondary side of the dehumidifying rotor. Machine. 3. A heat recovery device for recovering sensible heat from air passing through the primary side to air passing through the secondary side, wherein outdoor air is provided on the primary side of the total heat exchanger, on the primary side of the dehumidifying rotor, An air supply path is provided so that air is supplied into the room by sequentially passing through the primary side of the heat recovery unit, and indoor air is provided on the secondary side of the total heat exchanger.
3. The desiccant dehumidifier according to claim 2, wherein an exhaust path is provided so that the exhaust gas passes through the secondary side of the heat recovery unit and is exhausted to the outside of the room. 4. A heat recovery device for recovering sensible heat from air passing through the primary side to air passing through the secondary side, wherein outdoor air is provided on the primary side of the total heat exchanger, on the primary side of the dehumidifying rotor, An air supply path is provided so that air is supplied into the room by sequentially passing through the primary side of the heat recovery unit, and indoor air is provided on the secondary side of the total heat exchanger.
The secondary side of the heat recovery unit, an exhaust path is provided so as to be exhausted to the outside of the room through the heating air path in order, and between the secondary side of the heat recovery unit and the secondary side of the dehumidifying rotor. 3. The desiccant dehumidifier according to claim 2, wherein the combustion exhaust gas is supplied to the heated air path.