TWI571603B - Dehumidification apparatus - Google Patents

Description

Dehumidification equipment

This invention relates to a dehumidification apparatus, and more particularly to a dehumidification apparatus having a regenerable moisture absorbing material.

The existing indoor circulation dehumidification system includes a compressor type dehumidifier, a dehumidification wheel type dehumidifier, and an electronic dehumidifier. Among them, the compressor type dehumidifier is the mainstream, which uses the compression and cooling principle to absorb and cool the air, but the power consumption is considerable, and has the disadvantages of high noise and low temperature dehumidification. The dehumidification wheel dehumidifier achieves the function of dehumidification through a rotating wheel. It uses zeolite or resin as the moisture absorbing material, and then uses the electric heat source element to generate high heat to dehydrate and regenerate. However, the power consumed during heating regeneration is also considerable. . In addition, it is not suitable for summer use because it discharges a large amount of waste heat. The electronic dehumidifier uses a method in which a semiconductor is energized to generate a temperature difference, which causes the surface to be cooled and condensed, but is rarely used because of its poor dehumidification effect.

The invention provides a dehumidification device with low power consumption and operation cost.

The dehumidification apparatus of the present invention is disposed on a boundary wall between the first space and the second space. The dehumidification apparatus includes a conveying device and a regenerable moisture absorbing material. The conveying device moves back and forth between the first space and the second space. The regenerable hygroscopic material is disposed on the conveying device to reciprocate between the first space and the second space, wherein the regenerable hygroscopic material adsorbs moisture in the first space and excludes moisture in the second space.

In an embodiment of the invention, the first space is an indoor space, and the second space is an outdoor space.

In an embodiment of the invention, the renewable moisture absorbing material has a lowest critical solution temperature, the temperature of the first space is lower than the lowest critical solution temperature, and the temperature of the local second space in contact with the renewable moisture absorbing material is high. At or equal to the lowest critical solution temperature.

In an embodiment of the invention, a heat source is further disposed, disposed in the second space and located around the renewable moisture absorbing material.

In an embodiment of the invention, the heat source is waste heat.

In an embodiment of the invention, the heat source is from a heater.

In an embodiment of the invention, the airflow guiding device is further disposed in the first space for guiding the air in the first space to the renewable moisture absorbing material.

In an embodiment of the invention, the conveying device comprises a conveyor belt that continuously moves back and forth between the first space and the second space.

In an embodiment of the invention, the renewable moisture absorbing material comprises poly N-isopropyl acrylamide.

In an embodiment of the invention, the temperature of the first space is lower than 32 ° C, and the temperature of the partial second space in contact with the renewable moisture absorbing material is 32 ° C to 80 ° C.

Based on the above, the present invention reversibly transports the regenerable hygroscopic material between the first space and the second space, so that the regenerable hygroscopic material can adsorb the moisture of the first space and exclude the adsorbed moisture. Two spaces to recycle the renewable hygroscopic material. In this way, the dehumidification device can control the humidity under suitable conditions and has low power consumption and operating cost.

The above described features and advantages of the invention will be apparent from the following description.

100‧‧‧Dehumidification equipment

110‧‧‧Conveyor

112‧‧‧Transport runner

114‧‧‧ conveyor belt

120, 120 _d , 120 _w ‧‧‧Renewable hygroscopic material

130‧‧‧Airflow guiding device

G _w , G _d ‧‧‧ gas

H‧‧‧heat source

M _s ‧ ‧ water

S1‧‧‧ first space

S2‧‧‧Second space

W‧‧‧Boundary wall

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a side elevational view of a dehumidification apparatus in accordance with an embodiment of the present invention.

Fig. 2 is a dehumidification recording curve of the dehumidification effect test of an experimental example of the present invention.

Fig. 3 is a dehydration recording curve of a dehydration effect test of an experimental example of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a side elevational view of a dehumidification apparatus in accordance with an embodiment of the present invention. Referring to FIG. 1, in the embodiment, the dehumidifying apparatus 100 is disposed on the boundary wall W between the first space S1 and the second space S2. That is, a part of the dehumidifying apparatus 100 is exposed to the first space S1, and a part of the dehumidifying apparatus 100 is exposed to the second space S2. In this embodiment, the first space S1 is, for example, an indoor space, The second space S2 is, for example, an outdoor space, but is not limited thereto. In other embodiments, the first space S1 and the second space S2 may also be indoor spaces having different local temperatures.

The dehumidification apparatus 100 includes a delivery device 110 and a regenerable moisture absorbing material 120. The conveying device 110 moves back and forth between the first space S1 and the second space S2. In the present embodiment, the conveying device 110 includes, for example, a conveying reel 112 and a conveying belt 114, and the reel 112 causes the conveying belt 114 to continuously reciprocate between the first space S1 and the second space S2. The runner 112 can be counterclockwise or clockwise.

The renewable moisture absorbing material 120 is disposed on the conveying device 110 to reciprocate between the first space S1 and the second space S2. In the present embodiment, the regenerable hygroscopic material 120 is, for example, attached to a nonwoven fabric having a minimum critical solution temperature. When the ambient temperature is lower than the minimum critical solution temperature, the regenerable hygroscopic material 120 adsorbs the moisture to form a wet state, and when the ambient temperature is higher than the lowest critical solution temperature, the regenerable hygroscopic material 120 removes the moisture and is reduced. In a dry state. In this embodiment, the temperature of the first space S1 is lower than the lowest critical solution temperature (LCST), and the temperature of the local second space S2 in contact with the renewable moisture absorbing material 120 is higher than or equal to the lowest critical solution temperature. . In this way, the renewable moisture absorbing material 120 adsorbs moisture in the first space S1 and excludes moisture in the second space S2.

In the present embodiment, the regenerable hygroscopic material 120 is, for example, a low temperature renewable moisture absorbing material such as poly(N-isopropylacrylamide (PNIPAAm), and is, for example, by regenerative absorption. The powder of wet material is attached to the non-woven fabric It is made into a moisture absorbing material filter. PNIPAAm is characterized by a hydrogen bond between water molecules at 32 ° C or less and adsorption of moisture in the air, while at 60 ° C, the original adsorbed water molecules are discharged. Therefore, in the present embodiment, the temperature of the first space S1 is, for example, lower than 32 ° C, and the temperature of the partial second space S2 in contact with the renewable moisture absorbing material 120 is, for example, 32 ° C to 80 ° C. For example, the first space S1 is, for example, a room temperature of 25 ° C to 32 ° C, and the temperature of the partial second space S 2 in contact with the renewable moisture absorbing material 120 is, for example, about 60 ° C to 80 ° C.

In the present embodiment, the dehumidifying apparatus 100 includes, for example, a gas flow guiding device 130 disposed in the first space S1 for guiding the air in the first space S1 to the renewable moisture absorbing material 120.

In the present embodiment, the dehumidifying apparatus 100 includes, for example, a heat source H, disposed in the second space S2 and located around the renewable moisture absorbing material 120 such that the partial second space S2 of the renewable moisture absorbing material 120 contacts is higher than Or a temperature equal to the lowest critical solution temperature. In the present embodiment, the heat source H may be waste heat discharged from a device such as an air conditioning system, an electric heater, or the like. That is, the heat exhaust port of the device for generating waste heat may be disposed around the renewable moisture absorbing material 120 exposed in the second space S2 to provide hot air to raise the temperature at the temperature to be higher than or equal to the lowest critical solution temperature. . In another embodiment, the heat source H can also come from a heater.

In the following description, a dehumidification method for removing moisture in a gas by the dehumidifying apparatus 100 will be further described, wherein the structural configuration of the dehumidifying apparatus 100 has been described above, and will not be described herein. Referring to FIG. 1, the aqueous gas in the first space S1 is introduced into the drying gas G _w renewable absorbent material 120 _d in making aqueous renewable gas absorbent material 120 _w. Specifically, the moisture-containing gas G _{w is,} for example, guided by the gas flow guiding device 130 and passed through the renewable moisture absorbing material 120 _d to form a dry gas G _d and a moisture-containing renewable moisture absorbing material 120 _w . Next, the renewable moisture absorbing material 120 _w is introduced into the second space S2 from the first space S1 via the conveying device 110. In the embodiment, the conveying wheel 112 is rotated counterclockwise as an example, but not limited thereto. Then, by the local temperature of the second space S2 is equal to or above the minimum threshold 120 _w renewable absorbent material melting temperature, water gas M in 120 _w renewable absorbent material is discharged to the second space S2, To restore the dry renewable moisture absorbing material for 120 _d . It should be noted that although in the present embodiment, the gas G _w containing the aqueous gas enters the renewable hygroscopic material 120 _d from above, and the heat source H is provided from below, the invention is not limited thereto.

In the present embodiment, the regenerable hygroscopic material can adsorb the moisture of the first space by reciprocating the regenerable hygroscopic material between the first space (such as the indoor) and the second space (such as the outdoor), and The adsorbed moisture is removed to the second space to recycle the renewable absorbent material. Wherein, the local temperature of the second space can be adjusted according to the lowest critical solution temperature of the renewable moisture absorbing material by low temperature hot air such as waste heat or heater, so that the moisture absorbing regenerable moisture absorbing material can be reduced to dry. The regenerative moisture absorbing material is re-delivered into the first space to continue to adsorb moisture. On the other hand, the renewable moisture absorbing material having an appropriate minimum critical solution temperature can also be selected according to the temperature difference between the first space and the second space to achieve an optimum dehumidification efficiency. Furthermore, the dehumidification device can also adjust the humidity of the first space according to the content of the regenerable hygroscopic material, the operating speed of the conveying device, the hot air temperature and the air volume provided by the heat source, and the temperature and humidity sensor of the first space. Control under suitable conditions (such as RH: 50-60%) to enhance the comfort of the person in the first space. That is, According to the temperature difference of the space in the dehumidification equipment, with the renewable moisture absorption material, the energy consumption of indoor dehumidification can be greatly saved. In one embodiment, such as to reduce energy consumption to below 100 W, it is 15-40% of the existing commodity. Therefore, the dehumidifying apparatus of the embodiment has the advantages of no need of refrigerant, quietness, light weight, and energy saving.

Hereinafter, the regenerable moisture absorbing material filter used in the dehumidifying apparatus of the present invention has a dehumidifying effect and a reproducibility in an experimental example.

Dehumidification test

First, different amounts of the modified PNIPAAm powder material were attached to the nonwoven fabric material to prepare absorbent material filters A to G having dimensions of 30 cm x 30 cm, respectively. Next, the integrated air purification system prototype was placed in a 10 cubic meter display room and the display chamber was brought to the proper humidity. Then, the pre-dried moisture absorbing material filters A to G are placed in the air purification system prototype, and the circulation fan is started, and then the humidity change in the display room is recorded in time. The resulting dehumidification effect is shown in Table 1 below, and the dehumidification recording curve is shown in Fig. 2.

According to the above experiment, the moisture absorbing material filter has a good moisture absorption effect.

Dehydration test

First, about 4 grams of modified PNIPAAm powder was weighed and placed in a closed container with saturated moisture for several hours. Thereafter, the hygroscopic modified PNIPAAm powder was placed in an oven having a fixed temperature and taken out after a fixed time. The resulting dehydration recording curve is shown in Figure 3.

It can be seen from Fig. 3 that the modified PNIPAAm powder can achieve effective moisture desorption at 50 ° C to 70 ° C, and thus it is a renewable moisture absorbing material.

In summary, in an embodiment of the invention, the dehumidification device is disposed at the boundary wall between the indoor and outdoor, partially located indoors and partially outside. In this way, after the regenerable hygroscopic material absorbs the moisture in the room, the regenerable hygroscopic material is transported to the outside by the conveying device, and the water molecules of the regenerable hygroscopic material are moved to the outside with low-temperature hot air such as waste heat. To complete the regeneration of the hygroscopic material. Next, the regenerated hygroscopic material is delivered to the chamber to continue to adsorb moisture, thus performing cyclic dehumidification. That is to say, by combining the temperature difference between the first space and the second space and the minimum critical solution temperature of the renewable moisture absorbing material, the dehumidification device has low energy consumption, no need for refrigerant, quietness, light weight, low cost, etc. advantage.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention, and any one of ordinary skill in the art can make some changes and refinements without departing from the spirit and scope of the present invention. The scope of the invention is defined by the scope of the appended claims.

100‧‧‧Dehumidification equipment

110‧‧‧Conveyor

112‧‧‧Transport runner

114‧‧‧ conveyor belt

120, 120 _d , 120 _w ‧‧‧Renewable hygroscopic material

130‧‧‧Airflow guiding device

G _w , G _d ‧‧‧ gas

H‧‧‧heat source

M _s ‧ ‧ water

S1‧‧‧ first space

S2‧‧‧Second space

W‧‧‧Boundary wall

Claims (7)

A dehumidification device is disposed on a boundary wall between an indoor space and an outdoor space, and includes: a conveying device that moves back and forth between the indoor space and the outdoor space; and a regenerable moisture absorbing material disposed on the conveying And on the outside of the conveying device and in direct contact with the outdoor space to move back and forth between the indoor space and the outdoor space, wherein the renewable moisture absorbing material adsorbs moisture in the indoor space, and borrows Exchanging moisture in the outdoor space by contact with the outdoor space, wherein the renewable moisture absorbing material has a lowest critical solution temperature, the temperature of the indoor space being lower than the minimum critical solution temperature, and the renewable moisture absorbing material The temperature of the outdoor space in contact is greater than or equal to the minimum critical solution temperature, and the renewable moisture absorbing material comprises poly N-isopropyl acrylamide. The dehumidification device of claim 1, further comprising a heat source disposed in the second space and located around the renewable moisture absorbing material. The dehumidification apparatus of claim 2, wherein the heat source is a waste heat. The dehumidification apparatus of claim 2, wherein the heat source is from a heater. The dehumidification device of claim 1, further comprising a gas flow guiding device disposed in the first space for guiding the air in the first space to the renewable moisture absorbing material. The dehumidification device according to claim 1, wherein the transport device The device includes a conveyor belt for continuously reciprocating movement between the first space and the second space. The dehumidification apparatus according to claim 1, wherein the temperature of the first space is lower than 32 ° C, and the temperature of the second space in contact with the renewable moisture absorbing material is 32 ° C to 80 ° C.