JPH0557491B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a dehumidifying heating device for a heating house or the like.

At night in winter or in a heating house on cloudy days, cooling condensation of water vapor generated inside the house can be seen on the inner surface of the house. This phenomenon is unfavorable for the following two reasons.

First, cooling condensation of water vapor increases heat dissipation to the outside air. This phenomenon is called "condensation heat transfer" in heat transfer theory, and is when dry air touches the inner surface of the house and dissipates heat to the outside air without condensing (convection heat transfer).
Compared to, when condensation is involved (condensation heat transfer),
The amount of heat dissipated to the outside air increases significantly. As a result, the operating time of the hot air heating device that heats the house becomes longer, and energy costs increase.

Second, the dripping of condensed water on the inner surface of the house wets the branches and leaves of the plants, which adversely affects the plants. The temperature of this condensed water is lower than the temperature of the air around the plant (in fact, it is closer to the outside temperature), and it not only lowers the plant's body temperature, but also impairs the plant's respiration, leading to poor growth and disease. provoke.

To avoid this phenomenon, conventional ventilation methods using electric fans have been used, but this method discards hot air, leading to an increase in energy costs. Another option would be to install a new electric dehumidifier, but this would inevitably increase costs.

In order to improve the above-mentioned problems, the present invention is an apparatus that can simultaneously perform heating and dehumidification of a heating house, etc., and can freely control its performance.

The configuration of the hot air heating device having a dehumidifying function according to the present invention that achieves the above object is as follows.

Using a heat exchanger that uses the exhaust heat of the burner to heat the air sent from the condenser to produce warm air, and a hygroscopic liquid (such as triethylene glycol) that can be heated and regenerated at a predetermined temperature, the gas-liquid In a hot air heating system equipped with a means for dehumidifying through contact, evaporation and
The separated water vapor is dehumidified in a gas-liquid contactor and then cooled with blown air (dehumidified air).
Equipped with a moisture absorbing liquid concentration adjusting means consisting of a condenser for condensing, and a switching valve for collecting the water condensed in the condenser in a condensed water receiver and variably branching and directing it to an internal recirculation port and a condensed water discharge port, It is also characterized by being equipped with a radiator that is installed between the gas-liquid contactor and the condenser and cools the heated and regenerated hygroscopic liquid with the air (dehumidified air) sent from the gas-liquid contactor. .

The function of the hot air heating device having a dehumidifying function according to the present invention is as follows.

The hygroscopic liquid heated by the combustion heat of the burner is heated until the moisture content reaches a concentration corresponding to the temperature of the hygroscopic liquid.
Evaporates and separates absorbed moisture. This water vapor is
As shown in FIG. 1 of the embodiment, the hygroscopic liquid regenerator ascends inside the hygroscopic liquid regenerator to the condenser located at the upper part of the hygroscopic liquid regenerator, and is cooled. In this condenser, dehumidified air flows through the inside, and the outside is in contact with water vapor, and the latent heat and sensible heat of the water vapor is transferred from the partition wall of the condenser to heat the dehumidified air. The condensed water that has been cooled and condensed in the condenser is collected in a condensed water receiver located below the condenser by gravity. This condensed water is variably branched and led out to an internal recirculation port and a condensed water discharge port by a switching valve according to the conditions of the moisture absorbing liquid. When the moisture absorption liquid concentration is higher than the setting, condensed water flows to the internal reflux port. If it is necessary to increase the concentration of the moisture absorbing liquid to increase the dehumidification capacity, the condensed water is led out to the condensate outlet to maintain the concentration of the moisture absorbing liquid at a high level and to control the concentration of the moisture absorbing liquid in accordance with the usage conditions. There is.

The heat-regenerated hygroscopic liquid has a high temperature and needs to be cooled. A radiator cools this moisture-absorbing liquid using dehumidified air sent from a gas-liquid contactor. The radiator has two functions: cooling the heated and regenerated hygroscopic liquid and warming the dehumidified air.

An embodiment of this device will be described in detail based on the drawings.

In FIG. 1, a hygroscopic liquid 2 (such as triethylene glycol) is dropped from a pump 4 through a radiator 6 (which cools the hygroscopic liquid) into a gas-liquid contactor 10 by a dropper 8. After coming into contact with the intake air and absorbing moisture, it falls into the moisture absorption liquid tank and is returned to the moisture absorption liquid regenerator 22.

On the other hand, the intake air is dehumidified by the gas-liquid contactor 10 to become dry air, and is then sent from the blower 14 to the radiator 6.
The air is further heated in a condenser 16 and a heat exchanger 18, and is then discharged and distributed from a hot air duct 32 at a predetermined temperature and humidity.

In the hygroscopic liquid regenerator 22, when the hygroscopic liquid 2 is heated to a predetermined temperature by receiving heat from the burner 20, the hygroscopic liquid 2 is heated to a predetermined temperature.
boils, and water (H ₂ O) evaporates and vaporizes. This vaporized water is condensed and liquefied in the condenser 16, so the condensed water is collected in the condensation receiver 24 and is flowed to the internal recirculation port 28 or the condensed water outlet 30 by the switching valve 26.

The humidity of the dehumidified air is controlled by the concentration of the moisture absorbing liquid 2, the flow rate of the pump 4, and the air volume of the blower 14.

The concentration of the moisture absorbing liquid 2 can be adjusted by operating the switching valve 26 and changing the flow direction of the condensed water (internal recirculation port 2).
This can be done by changing the eight directions or the condensate outlet 30). In addition, the hot air temperature and its air volume are
It is controlled by a blower 14 and a burner 20.

Effects based on the configuration of the present invention are as follows.

First, by providing a condenser that cools and condenses the water vapor evaporated and separated from the hygroscopic liquid heated by the burner with dehumidified air sent from the gas-liquid contactor, the latent heat of the water vapor and the sensible The heat can be used to heat dehumidified air.

Second, a condensed water receiver receives the water condensed in the condenser,
By providing a moisture absorption liquid concentration adjustment means consisting of a switching valve that variably branches and leads out to the internal recirculation port and the condensed water discharge port, it becomes possible to realize fine control of the dehumidification capacity. Furthermore, it is possible to prevent excessive heating of the moisture absorbent liquid and improve the durability of the moisture absorbent liquid.

Third, by providing a radiator that cools the hygroscopic liquid that has been heated and regenerated with the dehumidified air sent from the gas-liquid contactor, the sensible heat of the hygroscopic liquid that has been heated and regenerated can be used to heat the dehumidified air. It becomes possible to use it.

As described above, the hot air heating device having a dehumidifying function of the present invention is effective for energy saving in heating houses and the like that require heating and dehumidification at the same time, and for preventing diseases in plants and the like.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram illustrating the present invention. 2... Moisture absorbing liquid, 4... Pump, 6... Heat radiator,
8... Dropper, 10... Gas-liquid contactor, 11... Hygroscopic liquid tank, 14... Blower, 16... Condenser,
18... Heat exchanger, 20... Burner, 22... Hygroscopic liquid regenerator, 24... Condensed water receiver, 26... Switching valve, 28... Internal return port, 30... Condensed water outlet, 32... …Hot air duct.

Claims (1)

[Claims] 1 Using the exhaust heat of the burner 20 to heat the air sent from the condenser 16 and obtain hot air, a heat exchanger 18 and a hygroscopic liquid that can be heated and regenerated at a predetermined temperature are used. In a hot air heating device equipped with a means for dehumidifying, a condenser 1 condenses water vapor evaporated and separated from a moisture absorption liquid 2 heated by a burner 20 with air sent from a gas-liquid contactor 10.
6, and the condensed water receiver 2 receives the water condensed in the condenser 16.
4, internal reflux port 28 and condensed water outlet 30
The hygroscopic liquid is provided with a concentration adjusting means for the hygroscopic liquid consisting of a switching valve 26 that variably branches and leads out the hygroscopic liquid, and is installed between the gas-liquid contactor 10 and the condenser 16, and is sent from the gas-liquid contactor 10. A hot air heating device having a dehumidifying function, characterized in that it is equipped with a radiator 6 that cools a moisture-absorbing liquid 2 that has been heated and regenerated with air.