JPH0523336B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a dehumidifier that cools and dehumidifies humid indoor air, reheats it, and supplies dry air indoors.

[Conventional technology]

FIG. 6 shows, for example, the inside of a plastic greenhouse as an indoor room. This is the second fan.

Various crops are grown in the greenhouse 1, but if the humidity inside the greenhouse 1 becomes high, the growth of the crops may be hindered or diseases may occur on the crops. In order to prevent this, a first fan 2 is installed above the front surface of the greenhouse 1, and a second fan 2 is installed above the rear surface of the greenhouse 1.
The fans 3 are operated at any time to ventilate the inside of the greenhouse 1, thereby alleviating the high humidity environment.

[Problem that the invention seeks to solve]

However, in the conventional device described above, the first fan 2 and the second fan 3 are installed above the greenhouse 1, so sufficient ventilation is performed above the greenhouse 1 and the humidity is reduced to some extent. can be done. However, on the lower side of the greenhouse 1, especially around the crops, there is almost no ventilation, and the humidity can hardly be lowered. Therefore, the area around the crops becomes a highly humid environment, which poses problems such as hindering the growth of the crops and causing diseases to the crops. In addition, when the temperature inside the greenhouse 1 decreases due to ventilation by the first fan 2 and the second fan 3, or when outside air is introduced through the second fan 3 and exhausted through the first fan 2, the temperature inside the greenhouse 1 further decreases. There was a problem with the decline.

This invention was made to solve the above-mentioned problems, and an object thereof is to provide a dehumidifying device that can create an optimal humidity environment indoors.

[Means for solving problems]

A dehumidifying device according to the present invention introduces indoor humid air into a housing, and has one side disposed inside the housing and the other side outside the housing, and mixes the indoor humid air flowing inside the housing with a low-temperature first fluid. A first heat exchange means for exchanging heat is provided, and the first heat exchange means is located downstream of the first heat exchange means, one side is placed inside the housing and the other side is placed outside the housing, and heat is exchanged by the first heat exchange means to dehumidify. A second fluid that exchanges heat between the air that has been heated to a low temperature and a high temperature second fluid.
A mixing means is provided on the other side of the housing and introduces humid indoor air and mixes the air that has passed through the first heat exchange means and the second heat exchange means. It was established.

[Effect]

In the dehumidifying device of the present invention, indoor humid air flowing inside the housing is dehumidified by heat exchange with the low temperature first fluid and the first heat exchange means to become low temperature air, and the low temperature air becomes high temperature air. heat exchanged with the second fluid by the second heat exchange means, the first heat exchange means;
The air that has passed through the second heat exchange means and the humid air in the room are introduced and mixed by the mixing means.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to FIGS. 1 and 2. In each of these figures, 4 is a housing into which moist air from, for example, the greenhouse 1 is introduced from one side, and 5 is a first heat exchange means. A plurality of heat pipes 6 are arranged, the other side 6b of which is arranged outside the casing 4, and a first fluid 7 such as water at a low temperature is supplied to the other side 6b of each of these heat pipes 6 through a supply pipe 8 and discharged. First supply/discharge device 1 discharging through pipe 9
0. Reference numeral 11 denotes a second heat exchange means disposed on the downstream side of the first heat exchange means 5;
are arranged, and the other side 12b is arranged outside the housing 4. A high temperature second fluid 13 is supplied to the other side 12b of each of these heat pipes 12 through the supply pipe 14, and the second fluid 13 is supplied to the exhaust pipe 15. and a second supply/discharge device 16 for discharging the water. Note that the supply pipe 14 of the second supply/discharge device 16 is connected to the discharge pipe 9 of the first supply/discharge device 10, that is, the high temperature state after heat exchange in the first heat exchange means 5 is shown. The case is shown in which the first fluid 7 is used. Reference numeral 17 is arranged on the other side of the casing 4, and mixes the air that has passed through the first heat exchange means 5 and the second heat exchange means 11 with the humid air inside the greenhouse 1 introduced thereinto. The mixing means 18 is disposed, for example, on the downstream side of the mixing means 17, and introduces the humid air inside the greenhouse 1 into the housing 4 and the mixing means 20, and the air mixed by the mixing means 20 into the vinyl greenhouse. This is a fan device that is led out into the house 1.

A1 to A6 indicate the position and temperature of each part in the air flow direction, and the moist air in the greenhouse 1 is A1.
It is introduced into the housing 4 from point A2, and the first
A3 passes through one side of the heat exchange means 5 of
point, passes through one side of the second heat exchange means 11, and reaches point A4. In addition, A5 in the mixing means 17
Humid air inside the greenhouse 1 is introduced from point A5, and the air that has passed through point A5 and the air that has passed through point A4 are mixed at point A6. The low-temperature first fluid 7 passes through the other side of the first heat exchange means 5 via point W1 and reaches point W2. The first fluid 7 that has passed through this W2 point is used, for example, as the second fluid 13, and passes through the other side of the second heat exchange means 11 and is then passed through the W2 point.
This brings us to 3 points.

Next, the heat exchange operation will be explained based on FIG. 3. The humid air at point A2 flowing through the casing 4 passes through one side of the first heat exchange means 5, that is, one side 6a of the heat pipe 6, and is deprived of heat, and is transferred to the other side 6b of the heat pipe 6. The heat is transported to and cooled by heat exchange with the low-temperature first fluid 7 supplied by the first supply/discharge device 10. Therefore, the air that has passed through one side 6a of the heat pipe 6 is lowered in temperature to point A3 and dehumidified. On the other hand, the first
The temperature of the fluid 7 increases from the W1 point temperature to the W2 point temperature by heat exchange with the moist air. Next, heat pipe 6
The air at point A3 that has been dehumidified and has a low temperature after passing through one side 6a of the second heat exchange means 11 is heated by passing through one side 12a of the heat pipe 12. . That is, the high-temperature second fluid 13 supplied by the second supply/discharge device 16 passes through the other side 12b of the heat pipe 12 and is deprived of heat, and is transferred to the one side 12a of the heat pipe 12.
The heat is transported to one side 12a of the heat pipe 12.
The dehumidified and low temperature air passing through the A3 point is heated, and the temperature of the air rises to the A4 point temperature to obtain dehumidified and heated air at the A4 point.
On the other hand, the temperature of the second fluid 13 decreases from the W2 point temperature to the W3 point temperature by heat exchange with the dehumidified and low temperature air. Next, one side 12a of the heat pipe 12
The air at point A4 that has been dehumidified and heated through the
In the mixing means 17, the air is mixed with the moist air introduced from point A5 into the mixing means 17 to become air at point A6, which has a higher temperature. This higher temperature A6
The air at the point is guided into the greenhouse 1 by the fan device 18. The air temperature at point A6 is approximately the same as the air temperature before dehumidification, and dehumidification can be performed without substantially lowering the temperature inside the greenhouse 1.

Further, as shown in FIG. 4, the air at point A6 mixed by the mixing means 17 is led out into the greenhouse 1 by a variable speed fan device 19,
By controlling the rotational speed of the variable speed fan device 19 by the control means 20 according to the humidity situation inside the greenhouse 1, dehumidification can be performed in accordance with changes in the humidity inside the greenhouse 1.

In addition, as shown in FIG. 5, natural energy can be utilized by supplying solar heat-generated hot water to the supply pipe 14 of the second supply/discharge device 16 via the switching means 21 and using the hot water supply means 22 as needed. Heat exchange can be performed.

Incidentally, in the above embodiment, the first heat exchange means 5, the second
Although the case has been described in which the heat pipes 6 and 12 are used as the heat exchange means 11, the present invention is not limited to this.

Further, in the above embodiment, the first fluid 7 and the second fluid 1
3 is water, but it is not limited to water. For example, cold air may be supplied to the other side of the first heat exchange means 5 and passed through the other side of the first heat exchange means 5. The air that has been heated to a high temperature by exchanging heat with the humid air is supplied to the other side of the second heat exchange means 11, and is passed through the other side of the second heat exchange means 11 to be dehumidified and cooled to a low temperature. The air that has been heated to a low temperature by exchanging heat with the other air may be discharged. In this case, a heating body such as a heater may be provided between the first heat exchange means 5 and the second heat exchange means 11. It is also possible to arrange it. It is also conceivable to use both water and air together.

Incidentally, in the above explanation, the case where the present invention is applied to a greenhouse is described as an indoor room, but it goes without saying that the present invention can also be applied indoors in a humid environment such as a food factory or a cafeteria.

〔Effect of the invention〕

As explained above, this invention introduces indoor humid air into the casing, and connects the indoor humid air flowing inside the casing with one side disposed inside the casing and the other side outside the casing and a low-temperature first fluid. A first heat exchange means for exchanging heat is provided, and the first heat exchange means is located downstream of the first heat exchange means, one side is placed inside the housing and the other side is placed outside the housing, and heat is exchanged by the first heat exchange means to dehumidify. A second heat exchange means is provided for exchanging heat between air that has become low temperature and a second fluid that is high temperature. A dehumidifying device is provided which introduces air and humid indoor air and mixes the air, thereby providing a dehumidifying device that can create an optimal humidity environment indoors.

[Brief explanation of the drawing]

1 and 2 are a sectional view and a system diagram showing a dehumidifying device according to an embodiment of the present invention, FIG. 3 is a characteristic diagram for explaining the heat exchange operation according to the present invention, and FIG. FIG. 5 is a sectional view showing a dehumidifying device according to one embodiment of the invention, FIG. 5 is a sectional view showing a dehumidifying device according to another embodiment of the invention, and FIG. 6 is a perspective view showing a conventional dehumidifying device. In the figure, 4 is a housing, 5 is a first heat exchange means, 7 is a first fluid, 11 is a second heat exchange means, 1
3 is a second fluid, 17 is a mixing means, 19 is a variable speed fan device, 20 is a control means, 21 is a switching means, 2
2 is a hot water supply means. Note that the same reference numerals in the figures indicate the same or corresponding parts.

Claims (1)

[Scope of Claims] 1. A housing into which humid indoor air is introduced from one side, one side disposed inside the housing, the other side disposed outside the housing, and humid air circulating within the housing. a first heat exchange means for exchanging heat between the first heat exchanger and the low-temperature first fluid, one side of which is located downstream of the first heat exchange means within the housing, and the other side of which is located outside of the housing; , a second heat exchange means for exchanging heat between the dehumidified and low-temperature air that has been heat-exchanged by the first heat exchange means and a high-temperature second fluid; and a second heat exchange means disposed on the other side of the casing; A dehumidifying device characterized by comprising: a mixing means for introducing the air that has passed through the first heat exchange means and the second heat exchange means and the humid air in the room and mixing the air with the air. 2. The dehumidification device according to claim 1, wherein the first heat exchange means includes a heat pipe and a first supply/discharge device that circulates a low-temperature first fluid to the other side of the heat pipe. Device. 3. Claim 1 or 2, characterized in that the second heat exchange means comprises a heat pipe and a second supply/discharge device that circulates a high temperature second fluid to the other side of the heat pipe. Dehumidifier as described in section. 4. A patent characterized in that the second heat exchange means uses, as the high-temperature second fluid, a first fluid that has been brought into a high-temperature state by heat exchange with the moist air flowing in the second flow path of the casing. A dehumidifying device according to any one of claims 1 to 3. 5 A casing into which indoor humid air is introduced from one side, one side disposed within the casing and the other side disposed outside the casing, the moist air and low-temperature first fluid circulating within the casing. and a first heat exchange means located downstream of the first heat exchange means, one side disposed within the housing and the other side disposed outside the housing; a second heat exchange means for exchanging heat between the dehumidified and low-temperature air that has been dehumidified by the exchange means and a high-temperature second fluid; and a second heat exchange means disposed on the other side of the casing, a mixing means for introducing and mixing the air flowing through the second heat exchange means and humid air in the room; and a variable speed fan device for introducing the air mixed by the mixing means into the room. and a control means for controlling the rotational speed of the variable speed fan device. 6 A casing into which indoor humid air is introduced from one side, one side disposed within the casing and the other side disposed outside the casing, the moist air and low-temperature first fluid circulating within the casing. and a first heat exchange means located downstream of the first heat exchange means, one side disposed within the housing and the other side disposed outside the housing; A second heat exchange means for exchanging heat between the dehumidified and low-temperature air that has been dehumidified by the exchange means and a high-temperature second fluid, and a switching means for a second fluid system of the second heat exchange means. a hot water supply means that supplies hot water obtained by utilizing solar heat, and a hot water supply means that is arranged on the other side of the housing and that is connected to the air that has passed through the first heat exchange means and the second heat exchange means and that is connected to the indoor air. A dehumidifying device characterized by comprising: mixing means for introducing humid air and mixing it with the air.