JPH078741A - Ventilation device - Google Patents

Abstract

PURPOSE:To provide a ventilation device capable of enhancing IAQ(indoor air quality) and not requiring a large capacity freezer as one used in indoor air conditioning. CONSTITUTION:The open air entering an open air introducing passage 11 is dehumidified and heated by the moisture absorbent of a rotary latent heat exchanger 18 to become high temp. dry air. This high temp. dry air is cooled by the heating medium circulated to a cooling heat exchanger 14 to be sent into a room. Indoor air enters an outdoor exhaust passage 12 to be heated by a regenerating heat exchanger 16 and the relative humidity of this inflow air is lowered. This air lowered in relative humidity enters the rotary latent heat exchanger 18 to remove humidity from the high humidity moisture adsorbent and this moisture adsorbent is regenerated to be discharged to the outside of the room.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ventilator for dehumidifying by utilizing a rotary latent heat exchanger.

[0002]

2. Description of the Related Art Conventionally, when performing indoor cooling, a refrigerant is circulated in a refrigerator and indoor air is cooled by this circulating refrigerant to generate cooling air, while this cooling air is circulated in the room to circulate the indoor air. Is being cooled. However, in indoor cooling by such an indoor air circulation method, since outside air cannot be taken in, indoor air is contaminated, and IAQ (Indoor AirQu
There was a problem that the ality (indoor air quality) deteriorates.

For this reason, even when the refrigerator is used for indoor cooling, it is necessary to drive the ventilation device to take in the outside air. However, in this case, high humidity outside air flows into the room during the summer. Accordingly, there is a problem that the cooling capacity of the refrigerator is taken to dehumidify high-humidity air and a large capacity refrigerator is required.

In order to solve this problem, a so-called desiccant cooling device shown in FIG. 2 is currently proposed.

As shown in FIG. 2 (a), this desiccant air conditioner has an outside air introduction passage 3 for introducing outside air into the room by a blower 2a in the apparatus housing 1, and an indoor air to the outside by a blower 2b. The outdoor exhaust passage 4 for discharging is provided side by side, and the windward side of the outside air introduction passage 3 and the outdoor exhaust passage 4 are arranged.
On the leeward side, a rotary latent heat exchanger 5 that is rotated by a motor or the like is arranged across the passages 3 and 4, and the outside air introduction passage 3
On the leeward side and on the windward side of the outdoor exhaust passage 4,
A rotary sensible heat exchanger 6 which is rotated by a motor or the like is arranged across the passages 3 and 4.

As shown in FIG. 2 (b), the rotary latent heat exchanger 5 is composed of a flat substrate 5a and a corrugated substrate 5b made of inorganic paper, and the substrates 5a and 5b are alternately arranged. It is formed by spirally winding it up so as to be arranged in a laminated state, and an inorganic hygroscopic agent such as silica gel is applied to each of the substrates 5a and 5b.

Further, as shown in FIG. 2C, the rotary sensible heat exchanger 6 is formed by incorporating a flat plate-shaped substrate 6a made of a material having a good heat transfer property into, for example, a lattice shape. .

Further, a water vaporization type humidifier 7 for humidifying and cooling the indoor air is arranged on the windward side of the rotary sensible heat exchanger 6 in the outdoor exhaust passage 4, and between the heat exchangers 5 and 6. Is provided with a regeneration heat exchanger 8 for heating the indoor air that has passed through the rotary sensible heat exchanger 6.

According to the desiccant cooling device thus constructed, the outside air (for example, point A; 35 ° C.) is rotated through the outside air introduction passage 3 as shown by the white arrow in FIG. Flowing into the latent heat exchanger 5, the outside air is absorbed by the moisture absorbent of the heat exchanger 5, and is heated by the heat generated during the absorption. The heated air (point B; 60 ° C.) is cooled by the rotary sensible heat exchanger 6 and blown into the room (point C;
25 ° C).

On the other hand, indoor air (for example, point D; 27 ° C)
Is humidified and cooled by the humidifier 7 and cooled air (point E; 21 ° C)
And flows into the rotary sensible heat exchanger 6, and the rotary sensible heat exchanger 6 heats by exchanging heat with the outside air passing through the outside air introduction passage 3 side. This heated air (F point; 55 ° C.) is further passed through the heat exchanger 8 for regeneration to be heated to become regenerable air (G point; 70 ° C.) of the hygroscopic agent, and its relative humidity also decreases. It flows to the rotary latent heat exchanger 5. The air flowing into the rotary latent heat exchanger 5 absorbs the moisture of the hygroscopic agent to regenerate the hygroscopic agent and is discharged outdoors.

[0011]

As described above, in the desiccant cooling device, the indoor ventilation and cooling are performed while suppressing the increase of the indoor humidity. The efficiency of the indoor cooling is the rotary sensible heat exchange. The structure and material of the rotary sensible heat exchanger 6 are greatly affected by the heat exchange efficiency of the heat exchanger 6.
Further, there are many restrictions on the size and the like, and therefore the cost is very high, and the size of the entire apparatus is large, which is disadvantageous in terms of installation space.

In view of the above-mentioned conventional problems, the object of the present invention is to
It is an object of the present invention to provide a ventilator capable of improving AQ and not requiring a large capacity refrigerator used for indoor air conditioning.

[0013]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention according to claim 1 provides an outside air introducing passage for introducing outside air into the room by one blower, and an indoor air by the other blower. In the ventilator in which an outdoor exhaust passage for discharging to the outside is installed in parallel, and a rotary latent heat exchanger coated with a hygroscopic agent is arranged across the outside air introduction passage and the outside exhaust passage, the rotation is performed in the outside air introduction passage. On the lee side of the rotary latent heat exchanger, a heat exchanger for cooling that circulates a heat medium such as water or brine with an evaporative heat dissipation unit installed outdoors to cool the outside air heated by the rotary latent heat exchanger. The vessels are arranged.

According to a second aspect of the invention, in the ventilating apparatus of the first aspect, the indoor air is heated on the windward side of the rotary latent heat exchanger in the outdoor exhaust passage to heat the moisture in the rotary latent heat exchanger. A heat exchanger for regeneration is arranged to circulate the heat medium such as water and brine for regenerating water.

[0015]

According to the first aspect of the invention, the outside air that has entered the outside air introduction passage is absorbed and heated by the absorbent of the rotary latent heat exchanger to become high temperature dry air. This high-temperature dry air is cooled by the heat medium circulated in the cooling heat exchanger and blown into the room.

On the other hand, the indoor air enters the outdoor exhaust passage and is heated by the heat exchanger for regeneration to reduce the relative humidity of the inflowing air. The air with reduced relative humidity enters the rotary latent heat exchanger to remove the moisture from the high-humidity absorbent, and is discharged outdoors.

According to the second aspect of the invention, the air in the room is heated by the rotary latent heat exchanger, but before the heating by the rotary latent heat exchanger, the heat medium circulates in the regeneration heat exchanger. It is preheated and the hygroscopic agent is efficiently regenerated.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an embodiment of a ventilator according to the present invention, in which FIG. 1 shows a water circuit and a wind circuit of the ventilator.

In the figure, 10 is a ventilation device housing, 11 is an outside air introduction passage, and 12 is an outdoor exhaust passage. This each passage 11,
Similar to the passages shown in FIG. 2, the reference numerals 12 are provided side by side so that the inside of the housing 10 communicates with the inside of the room. Also,
One of the blowers 13 is located near the outside of the outside air introduction passage 11.
While a is installed, the other blower 13b is installed near the outdoor exhaust passage 12 so that the outside air is blown into the outside air introduction passage 11 and the room, while the indoor air is discharged into the outdoor exhaust passage 12 and It is blown outdoors.

In such an air circuit, a cooling heat exchanger 14 is installed on the leeward side of the outside air introduction passage 11. The heat exchanger 14 for cooling is connected to an evaporative heat dissipation unit 15 installed outdoors. That is, the evaporative heat dissipation unit 15 is a heat dissipation heat exchanger 15a, and a sprinkler 15 for spraying city water on the heat dissipation heat exchanger 15a.
b, a blower 15c that blows air to the heat dissipation heat exchanger 15a, and a pump 15d that circulates water between the cooling heat exchanger 14 and the heat dissipation heat exchanger 15a. As a result, the water circulated from the cooling heat exchanger 14 to the heat radiating heat exchanger 15a is cooled by the water spray of the water sprinkler 15b and the air blow of the blower 15c, and the cooled water is returned to the cooling heat exchanger 14 again. To do. In addition, this evaporation type heat dissipation unit 1
As 5, a cooling tower (not shown) having a similar structure may be used.

A regeneration heat exchanger 16 is installed on the windward side of the outdoor exhaust passage 12. The regeneration heat exchanger 16 is connected to an external boiler unit 17. That is, the boiler unit 17 is composed of a boiler main body 17a that boils city water to generate hot water, and a pump 17b that circulates the hot water of the boiler main body 17a to the heat exchanger 16 for regeneration. Boiler body 1 to 16
The hot water of 7a is supplied.

Further, a rotary latent heat exchanger 18 is installed between each of the blowers 13a and 13b and each of the heat exchangers 14 and 15 so as to straddle the outside air introduction passage 11 and the outdoor exhaust passage 12. This rotary latent heat exchanger 18 is similar to that shown in FIG. 2 (b), in which a flat plate substrate coated with silica gel and a corrugated substrate are rolled up and laminated, and this is rotated by a motor or the like. Then, each part of the rotary latent heat exchanger 18 is configured to rotate and move along each of the passages 11 and 12.

Next, the operation of the ventilation system according to this embodiment will be described based on the flow of outside air and room air.

That is, as shown by the white arrow in FIG. 1, outside air (for example, point A; temperature = 35 ° C., humidity; 20 g / kg ′)
Is blown into the outside air introduction passage 11 by the drive of the blower 13 a and is blown to the rotary latent heat exchanger 18. The blown outside air is dehumidified by the moisture absorbent of the rotary latent heat exchanger 18,
In addition, heat is generated during this dehumidification, and becomes high-temperature dry air (point B; temperature = 60 ° C., humidity; 10 g / kg ′) and flows into the cooling heat exchanger 14. The outside air that has flowed in is cooled by the cooling heat exchanger 14, and the cooled outside air (point C; temperature = 30 ° C.) is blown into the room.

On the other hand, the air in the room is blown to the heat exchanger 16 for regeneration by driving the blower 13b. The blown indoor air is heated by the heat exchanger 16 for regeneration, the relative humidity thereof is lowered, and the indoor air is blown to the rotary latent heat exchanger 18. The air blown to the rotary latent heat exchanger 18 absorbs the moisture of the hygroscopic agent to regenerate the hygroscopic agent and is discharged outdoors.

As described above, according to the ventilator of this embodiment, when the outdoor air is taken into the room, its humidity is taken and supplied to the room, thereby suppressing an increase in the humidity of the room air. . Therefore, in the refrigerator performing indoor cooling, its cooling capacity is not largely taken for dehumidification,
It does not require a large capacity refrigerator as an indoor air conditioner.

Further, since the ventilator according to this embodiment does not have a rotary sensible heat exchanger such as the conventional desiccant air conditioner, the cost is low and the ventilator is small as a whole, and the space is small in the ceiling or the ceiling. It can be installed in

[0028]

As described above, according to the present invention of claim 1, when the outdoor air is taken into the room for ventilation, the humidity is taken in to suppress the increase in the humidity of the indoor air. The advantage is that a refrigerator with a large capacity is not required as a refrigerator for indoor air conditioning.

Further, since there is no rotary sensible heat exchanger such as the conventional desiccant cooling device, the cost is low and the whole ventilation device is small, and it can be installed in the ceiling or a small space under the ceiling.

According to the invention of claim 2, in addition to the effect of claim 1, the moisture absorbent of the rotary latent heat exchanger can be regenerated.

[Brief description of drawings]

FIG. 1 is a water circuit diagram and a wind circuit diagram showing a ventilation device according to the present invention.

FIG. 2 is a wind circuit diagram showing a desiccant cooling device and a perspective view of each heat exchanger.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 ... Ventilator housing, 11 ... Outside air introduction passage, 12 ... Outdoor exhaust passage, 13a, 13b ... Blower, 14 ... Cooling heat exchanger, 15 ... Evaporative heat dissipation unit, 16 ... Regeneration heat exchanger, 18 ... Rotary latent heat exchanger.

Claims (2)

[Claims] 1. A rotary type in which an outside air introducing passage for introducing outside air into the room by one blower and an outdoor exhaust passage for discharging indoor air to the outside by the other blower are arranged in parallel and a hygroscopic agent is applied. In a ventilation device in which a latent heat exchanger is arranged across the outside air introduction passage and the outdoor exhaust passage, on the lee side of the rotary latent heat exchanger in the outside air introduction passage, between an evaporation type heat dissipation unit installed outdoors. And a cooling heat exchanger that circulates a heat medium such as water and brine to cool the outside air heated by the rotary latent heat exchanger. 2. A heat medium for circulating heat medium such as water and brine that heats indoor air on the windward side of the rotary latent heat exchanger in the outdoor exhaust passage to regenerate the moisture absorbent of the rotary latent heat exchanger. 2. A heat exchanger for regeneration is arranged.
Ventilation device described.