WO2011004596A1

WO2011004596A1 - Greenhouse ventilation device and greenhouse air-conditioning system

Info

Publication number: WO2011004596A1
Application number: PCT/JP2010/004428
Authority: WO
Inventors: 宮内彦夫; 三上芳宏
Original assignee: ダイナエアー株式会社
Priority date: 2009-07-10
Filing date: 2010-07-07
Publication date: 2011-01-13
Also published as: JP2011015655A; TW201101993A; JP4647018B2

Abstract

A greenhouse air-conditioning system is a system for air-conditioning the inside of a greenhouse and is provided with a ventilation device (1) for introducing the outside air into the greenhouse. The ventilation device is provided with a fan (17) which forces air into the greenhouse from the outside thereof, a filling material (14) which is provided so as to close the path for the air flowing into the greenhouse from the outside thereof, a hygroscopic-liquid supply section (15) which supplies to the filling material (14) a hygroscopic liquid (L) which even has an antiseptic effect, a liquid tank (16) in which the hygroscopic liquid (L) having passed through the filling material (14) is contained, and a regenerator (40) which regenerates the hygroscopic liquid (L) having a concentration which has been changed in the filling material (14) by making contact with air. The inside of the greenhouse can be appropriately ventilated, with the air environment within the green house taken into account.

Description

House ventilation system and house air conditioning system

Related applications

This application claims the benefit of Patent Application No. 2009-163486, filed in Japan on July 10, 2009, the contents of which are incorporated herein by reference.

The present invention relates to a house ventilation device and house air conditioning system used for house cultivation of agricultural products and the like.

Conventionally, house cultivation in which vegetables and fruits are cultivated in a plastic house or plastic house has been known. Recently, “plant factories” that cultivate plants in an environment that is not easily affected by changes in weather and temperature are attracting attention. A plant factory is a technique for strictly controlling room temperature and illuminance than conventional house cultivation in order to create an environment suitable for plant growth.

When a plant is cultivated in a closed space as described above, the carbon dioxide concentration in the house decreases as the plant performs photosynthesis. Therefore, it is necessary to supply carbon dioxide into the house, and ventilation is performed.

In a conventional house, for example, as described in Patent Document 1, it is known that a part of the house is opened and ventilated. In this method, pests that cause illness and mold enter the house.

Patent Document 2 discloses a ventilation system that performs ventilation while preventing the invasion of harmful pests into the house.

JP 2004-350506 A JP 2008-283908 A

In the ventilation system described in Patent Document 2, since an outside air filtration filter having a mesh size of 0.1 mm is used, invasion of harmful pests larger than 0.1 mm can be prevented, but several μm to several tens μm. The invasion of fine fungi and viruses cannot be prevented.

Moreover, the ventilation system described in Patent Document 2 cannot prevent the environment in the house from being disturbed by ventilation. Humidity is an important factor in growing plants. For example, when the humidity is high, gray mold disease or the like is caused, and when the humidity is low, powdery mildew or the like is caused. Therefore, maintaining an appropriate range of humidity is as important as maintaining the temperature. However, in Patent Document 2, no consideration is given to the humidity in the house.

In Patent Document 2, it is described that when the outside air temperature is high, the temperature in the house is lowered by humidification. However, this pays attention to the temperature in the house, and does not consider humidity. In the Japanese climate, the humidity is high in the summer when the outside temperature is high. However, in Patent Document 2, the humidity is increased when the temperature is high, and the humidity further increases. Such problems arise.

Therefore, the present invention provides a new house ventilation apparatus and house air conditioning system that can perform appropriate ventilation in consideration of the air environment in the house.

The house ventilator of the present invention has a fan for sending air into the house from the outside of the house, a filler provided in a passage of air flowing from the outside of the house into the house, and a sterilizing effect on the filler. A hygroscopic liquid supply section for supplying a hygroscopic liquid that also has, a liquid tank for containing the hygroscopic liquid that has passed through the filler, and a hygroscopic liquid having a concentration changed by gas-liquid contact with air in the filler And a playback device.

In the filler provided in the air passage in this way, air that has been sterilized and conditioned is supplied into the house by bringing the air taken in from outside and the hygroscopic liquid having a sterilizing effect into gas-liquid contact. Therefore, ventilation can be performed while maintaining the environment in the house. As the hygroscopic liquid, lithium chloride having high sterilizing power may be used.

In the house ventilation device of the present invention, the filler may be provided so as to block an air passage.

With this configuration, the air introduced into the house always passes through the filler and comes into gas-liquid contact with the hygroscopic liquid, so that it can be reliably cleaned.

The house ventilator of the present invention may be provided with a sensor for measuring the carbon dioxide concentration in the house and ventilate so that the carbon dioxide concentration becomes a predetermined threshold value or more.

This configuration can maintain the carbon dioxide concentration in the house at an appropriate value by ventilation and promote plant growth.

The house ventilation device of the present invention may include an insect repellent filter on the air passage from the outside of the house to the filler.

There are many insects in the environment where the house is installed. According to the configuration of the present invention, contamination of the hygroscopic liquid due to insect invasion can be prevented and the life of the hygroscopic liquid can be extended.

The house ventilation apparatus of the present invention may include a dustproof filter on the air passage from the outside of the house to the filler.

In the environment where the house is installed, dust can be generated. With the configuration of the present invention, it is possible to prevent the hygroscopic liquid from being contaminated by sand dust and to extend the life of the hygroscopic liquid.

In the ventilation device for a house of the present invention, the regenerator includes a housing having an intake port for taking in air and an exhaust port for discharging air, a hygroscopic liquid supply unit for supplying a hygroscopic liquid to be regenerated, A filler that temporarily retains the hygroscopic liquid in order to bring the hygroscopic liquid supplied from the hygroscopic liquid supply section into air-liquid contact with the air, and an air passage from the intake to the filler; An insect filter may be provided on an air passage from the filler to the exhaust port.

There are many insects in the environment where the house is installed. By providing the insect filter on the inlet side of the filler, it is possible to prevent contamination of the hygroscopic liquid due to the invasion of insects and to extend the life of the hygroscopic liquid. Also, by providing an insect filter on the exhaust port side, insects can be prevented from entering even when the operation of the regenerator is stopped.

The air conditioning system for a house of the present invention includes the above-described ventilation device for a house and an indoor air combustion type heating device installed in the house.

Since air is taken into the house by the house ventilator, the temperature inside the house can be raised by an energy efficient internal air combustion type heating device.

The air conditioning system for a house according to the present invention includes the above-described ventilation device for a house and a cooling device using ground water or service water installed in the house.

Since the humidity in the house is adjusted by the house ventilator, high cooling capacity is not required, and low-cost cooling using groundwater or irrigation water can be realized.

The present invention, by the hygroscopic liquid having a bactericidal effect, by treating the air taken from the outside, can be ventilated while maintaining the environment in the house.

It is a figure which shows the structure of the air conditioning system for houses. It is a figure which shows the structure of the ventilation apparatus for houses. It is a figure which shows the dust removal rate of lithium chloride. It is a figure which shows the bactericidal power of lithium chloride. It is a figure which shows the measurement result of the temperature in a house, and humidity. It is a figure which shows the measurement result of the temperature in a house, and humidity. It is a figure which shows the measurement result of temperature and humidity outside a house.

Hereinafter, an air conditioning system for a house 70 according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a diagram illustrating an overall configuration of an air conditioning system 70 for a house.

The house H to which the house air conditioning system 70 is applied is, for example, a plastic house or a plastic house, and provides an environment for growing the plant P. In the house H, an illumination 71 for cultivation is provided. Electric power generated by the cogeneration generator 72 is supplied to the lighting 71 for cultivation. In the present specification, the installation target of the air conditioning system is referred to as “house”, but the house air conditioning system 70 of the present invention can also be applied to a facility referred to as “plant factory”. It is.

The house air conditioning system 70 has a house ventilator (hereinafter referred to as “ventilator”) 1 for taking outside air into the house H. The air in the house H is exhausted from an exhaust port (not shown). The exhaust port is opened only when air is taken in by the ventilator 1, and is closed when the ventilator 1 is not operating. The exhaust port is relatively small, and the flow of air from the inside of the house H to the outside of the house H is formed by the supply pressure of air from the ventilation device 1. Thereby, invasion of microscopic organisms and the like from the exhaust port can be prevented. In order to prevent relatively large insects from entering, it is preferable to provide an insect filter at the exhaust port.

The ventilator 1 adjusts the humidity of the air taken in from the outside, cleans it, and supplies it to the house H. Exhaust heat generated by the cogeneration generator 72 is supplied to the ventilation device 1. The house air conditioning system 70 uses the exhaust heat of the cogeneration generator 72 to improve energy use efficiency.

The house air conditioning system 70 has an inside air combustion hot air heater 73 and a cooling fan 74 in the house H. The indoor air combustion warm air device 73 is a device that generates warm air by burning oxygen in the house H. The inside-air combustion warm air device 73 also has a function as a carbon dioxide gas applicator. When the carbon dioxide concentration in the house H is lowered, carbon dioxide can be applied by the internal air combustion hot air heater 73.

The cooling fan 74 generates cold air by cooling the air with groundwater or water. In the present embodiment, when the air is taken in by the ventilator 1, the humidity (latent heat) is adjusted, so that the thermal energy in the house H can be obtained without reducing the room temperature (sensible heat) by cooling. Can be reduced. Therefore, an environment suitable for the growth of the plant P can be created by gentle cooling using groundwater or irrigation water.

FIG. 2 is a diagram showing a detailed configuration of the ventilation device 1 used in the air conditioning system 70 for a house. The ventilation device 1 has a processing machine 10 that processes air taken from the outside of the house H and introduces the air into the house H. The processor 10 adjusts the humidity by bringing the taken-in air into gas-liquid contact with the hygroscopic liquid L. In the present embodiment, lithium chloride (LiCl) is used as the hygroscopic liquid L.

FIG. 3A is a diagram showing the dust removal rate of lithium chloride, and FIG. 3B is a diagram showing the sterilizing power of lithium chloride. As shown in FIG. 3A, lithium chloride can remove almost 100% of dust having a particle size of 5 μm or more. FIG. 3B is a diagram showing the time and concentration required for sterilizing the test bacteria species. For example, Escherichia coli can be sterilized by exposing it to lithium chloride having a concentration of 20% or more for 10 minutes or more. The ventilator 1 of the present embodiment uses lithium chloride having a concentration of about 27 to 30%, and thus exhibits a high sterilizing effect.

Thus, since lithium chloride has a high dust removing action and sterilizing power, the air taken in from the outside is cleaned by gas-liquid contact with lithium chloride. The hygroscopic liquid L is not limited to lithium chloride, but a salt solution having deliquescence such as saline, polyhydric alcohols having high hygroscopicity such as glycerin, ethylene glycol, propylene glycol, and other hygroscopic properties, An inexpensive liquid having sterilizing power and dust removing power may be used.

The ventilation device 1 has a regenerator 40 that regenerates the hygroscopic liquid L used for the processing in the processing device 10. Here, the regeneration of the hygroscopic liquid L refers to returning the hygroscopic liquid L whose concentration has changed by performing humidity adjustment to the state before the humidity adjustment treatment. For example, in the dehumidifying process, moisture in the air is absorbed by the hygroscopic liquid L by cooling the hygroscopic liquid L having a high solution concentration and passing air through the cooled hygroscopic liquid L. Although the solution concentration of the hygroscopic liquid L is lowered by this treatment, the hygroscopic liquid L having a low solution concentration cannot perform sufficient dehumidification. The hygroscopic liquid L having a high solution concentration is returned to the hygroscopic liquid L having a high solution concentration by a regeneration process for desorbing moisture from the hygroscopic liquid L having a low solution concentration. In the case of the humidification process, conversely, since the solution concentration of the hygroscopic liquid L is increased, the hygroscopic liquid L is returned to the low solution concentration by the regeneration process in which the hygroscopic liquid L absorbs moisture.

FIG. 2 shows an example in which one regenerator 40 is connected to one processor 10. For example, when a processor 10 is provided in each of a plurality of houses H, FIG. A single regenerator 40 may be connected to a plurality of processors 10.

The processor 10 and the regenerator 40 are connected by a first hygroscopic liquid conduit 61 and a second hygroscopic liquid conduit 62. The first hygroscopic liquid pipe 61 is a pipe for sending the hygroscopic liquid L from the processor 10 to the regenerator 40, and the second hygroscopic liquid pipe 62 is a hygroscopic pipe from the regenerator 40 to the processor 10. This is a conduit for feeding the sex liquid L. By using the first hygroscopic liquid pipe 61 and the second hygroscopic liquid pipe 62 to circulate the hygroscopic liquid L between the processing machine 10 and the regenerator 40, the moisture absorption used in the processing machine 10. The organic liquid L is regenerated by the regenerator 40 and returned to the processor 10.

[Processing machine]
Next, the configuration of the processor 10 will be described. The processing machine 10 includes a housing 11 that contains a filler 14 for performing gas-liquid contact between air and the hygroscopic liquid L, and a hygroscopic liquid supply unit 15 that drops the hygroscopic liquid L on the filler 14. It has. The hygroscopic liquid L dropped from the hygroscopic liquid supply unit 15 slowly flows down through the filler 14. Therefore, the hygroscopic liquid L stays temporarily in the filler. In the lower part of the housing 11, there is a liquid tank 16 for storing the hygroscopic liquid L that has passed through the filler 14.

The housing 11 is formed with an intake port 12 for taking in air and an exhaust port 13 for discharging air. A dustproof filter 18 that prevents sand and dust from entering the housing 11 and an insectproof filter 19 that prevents insects from passing through the dustproof filter 18 are attached to the intake port 12. The exhaust port 13 is provided with a fan 17 for sending air taken from outside into the house H. As the fan 17 rotates, air is taken into the housing 11 from the outside of the house H, and is sent into the house H through a path indicated by an arrow in FIG. The ventilation amount by the ventilation device 1, that is, the rotation speed of the fan 17 is controlled by the control unit 66. An insect filter 20 is also attached to the exhaust port 13.

As shown in FIG. 2, since the filler 14 is provided on a passage through which air passes, the air taken in from the intake port 12 passes through the filler 14. As described above, since the hygroscopic liquid L stays in the filler 14, moisture is exchanged between the hygroscopic liquid L and the air passing through the filler 14 to perform dehumidification or humidification. Is called. Further, the air passing through the filler 14 is purified by the dust removing action and the sterilizing action of lithium chloride. As shown in FIG. 2, the filler 14 is provided so as to block the air passage, and there is no gap between the inner surface of the housing 11 and the filler 14. Therefore, the air introduced into the house H surely passes through the filler 14.

The processing machine 10 has a pipe 21 for supplying the hygroscopic liquid L in the liquid tank 16 to the hygroscopic liquid supply unit 15. A pump 22 is attached to the pipe 21 to suck up the hygroscopic liquid L in the liquid tank 16.

This pipe 21 is provided with a first heat exchanger 31 of a heat pump 30, and the hygroscopic liquid L is heated or cooled by the first heat exchanger 31. The first heat exchanger 31 controls the temperature of the hygroscopic liquid L supplied from the hygroscopic liquid supply unit 15 of the processor 10. Whether the hygroscopic liquid L is heated or cooled depends on whether the processor 10 humidifies or dehumidifies the air. That is, when the processor 10 performs the humidification process, the hygroscopic liquid L is heated in order to release the moisture contained in the hygroscopic liquid L into the air. Conversely, when the processor 10 performs the dehumidifying process, the hygroscopic liquid L is cooled in order to make the hygroscopic liquid L easily absorb moisture in the air.

The first hygroscopic liquid pipe 61 for sending the hygroscopic liquid L in the liquid tank 16 to the regenerator 40 is connected to the pipe 21 for sucking the hygroscopic liquid L from the liquid tank 16 through the three-way valve 23. ing. The three-way valve 23 controls the amount of the hygroscopic liquid L sent to the hygroscopic liquid supply unit 15 of the processor 10 and the amount of the hygroscopic liquid L sent to the regenerator 40 through the first hygroscopic liquid pipe 61. In the present embodiment, the three-way valve 23 is configured such that (amount of hygroscopic liquid L sent to the hygroscopic liquid supply unit 15): (amount of hygroscopic liquid L sent to the regenerator 40) is from 8: 2 to 9: 1. Control to be a percentage.

The first hygroscopic-liquid pipe path 61, the second heat exchanger 32 is provided, to cool or heat the hygroscopic liquid L supplied to the regenerator 40. The second heat exchanger 32 controls the temperature of the hygroscopic liquid L supplied to the regenerator 40. The first heat exchanger 31 and the second heat exchanger 32 constitute a heat pump 30, and heat moves between the first heat exchanger 31 and the second heat exchanger 32.

Here, the configuration of the heat pump 30 will be described. The heat pump 30 includes a first heat exchanger 31, a second heat exchanger 32, a compressor 33, an expansion valve 34, and a refrigerant pipe 35 that connects them. The heat pump 30 can cause the first heat exchanger 31 to function as an evaporator or a condenser by reversing the refrigerant flow. The second heat exchanger 32 performs a process opposite to that of the first heat exchanger 31.

[Playback machine]
Next, the playback device 40 will be described. The regenerator 40 regenerates the hygroscopic liquid L by bringing the hygroscopic liquid L sent from the processor 10 into air-liquid contact. The regenerator 40 includes a casing 41 that houses a filler 44 for performing gas-liquid contact between air and the hygroscopic liquid L, and a hygroscopic liquid supply unit 45 that drops the hygroscopic liquid L on the filler 44. have. In addition, a liquid tank 46 that stores the hygroscopic liquid L that has passed through the filler 44 is provided at the lower portion of the housing 41.

The hygroscopic liquid supply unit 45 is filled with the hygroscopic liquid supply unit 45 a that supplies the hygroscopic liquid L sent through the first hygroscopic liquid pipe 61 to the filler 44, and the hygroscopic liquid L sucked up from the liquid tank 46. And a hygroscopic liquid supply unit 45 b for supplying the material 44. Whether the second heat exchanger 32 of the heat pump 30 provided in the first hygroscopic liquid pipe 61 heats or cools the hygroscopic liquid L is whether the hygroscopic liquid L is concentrated or diluted by the regenerator 40. by. That is, when the regenerator 40 concentrates the hygroscopic liquid L, the hygroscopic liquid L is heated in order to release the moisture contained in the hygroscopic liquid L into the air. On the contrary, when the regenerator 40 dilutes the hygroscopic liquid L, the hygroscopic liquid L is cooled in order to make the hygroscopic liquid L easily absorb moisture in the air.

The housing 41 is formed with an intake port 42 for taking in air and an exhaust port 43 for discharging air. A dustproof filter 56 that prevents sand and dust from entering the housing 41 and an insectproof filter 57 that prevents insects from passing through the dustproof filter 56 are attached to the intake port 42.

The exhaust port 43 is provided with a fan 47 for exhausting air from the inside of the housing 41. As the fan 47 rotates, the air in the housing 41 is discharged to the outside, and the inside of the housing 41 has a negative pressure with respect to the outside of the housing 41. Flows in. An insect filter 58 is also attached to the exhaust port 43. Thereby, even when the fan 47 is stopped, insects can be prevented from entering the housing 41 from the exhaust port 43.

In FIG. 2, the arrows indicate the flow of air. As shown in FIG. 2, the air taken in from the intake 42 passes through the filler 44. Since the hygroscopic liquid L stays in the filler 44, moisture is exchanged between the hygroscopic liquid L and air. Thereby, the hygroscopic liquid L is regenerated.

The regenerator 40 has a pipe 49 that supplies the hygroscopic liquid L in the liquid tank 46 to the first hygroscopic liquid conduit 61. The hygroscopic liquid L in the liquid tank 46 is sucked up by the pump 50 to the first hygroscopic liquid pipe 61. The hygroscopic liquid L is supplied again to the regenerator 40 through the second heat exchanger 32.

The regenerator 40 has a supply pipe 51 for supplying the hygroscopic liquid L in the liquid tank 46 to the hygroscopic liquid supply unit 45b. A pump 52 is attached to the supply pipe 51 and sucks up the hygroscopic liquid L in the liquid tank 46. The tube 51 is provided with a heating source 53. This heating source heats the hygroscopic liquid L flowing through the pipe 51 using the exhaust heat of the cogeneration generator 72.

The heating source 53 heats the hygroscopic liquid L sucked up from the liquid tank 46 when it is desired to increase the temperature in addition to the temperature control by the second heat exchanger 32. The heated hygroscopic liquid L is dropped onto the filler 44 from the hygroscopic liquid supply unit 45 b and is brought into gas-liquid contact with the filler 44. The hygroscopic liquid L that has passed through the filler 44 enters the liquid tank 46. By circulating the hygroscopic liquid L in this way, the regenerator 40 performs a regeneration process of the hygroscopic liquid L.

The regenerator 40 has a water supply pipe 54 for supplying water to the liquid tank 46. A valve 55 is provided on the water supply pipe 54, and water supply is controlled by the valve 55.

The hygroscopic liquid L in the liquid tank 46 returns to the processing machine 10 through the second hygroscopic liquid conduit 62. The amount of the hygroscopic liquid L that returns from the regenerator 40 to the processor 10 is adjusted by a valve 63. In the present embodiment, the valve 63 controls the amount of the hygroscopic liquid L that is returned to the processor 10 so that the liquid level of the hygroscopic liquid L in the liquid tank 46 is constant.

The ventilator 1 has a heat exchanger 64 that exchanges heat between the first hygroscopic liquid conduit 61 and the second hygroscopic liquid duct 62. This heat exchanger 64 reduces the temperature difference between the hygroscopic liquid L flowing through the first hygroscopic liquid conduit 61 and the hygroscopic liquid L flowing through the second hygroscopic liquid conduit 62, and the pumping temperature difference of the heat pump 30 is reduced. Contributes to reduction. The configuration of the ventilation device 1 has been described in detail above.

[Operation of air conditioning system for house]
Next, operation | movement of the air conditioning system 70 for houses of this Embodiment is demonstrated. The house air conditioning system 70 measures the carbon dioxide concentration in the house H by the sensor 65 that measures the carbon dioxide concentration. The ventilation device 1 adjusts the ventilation amount by the control unit 66 so that the carbon dioxide concentration in the house H maintains a predetermined threshold value. For example, ventilation is started when the carbon dioxide concentration falls below a predetermined threshold, and ventilation is performed until it becomes equal to the external carbon dioxide concentration. In addition, (1) nighttime when plants do not perform photosynthesis, (2) when many workers are in the house, (3) when operating the inside air combustion heater 73, etc., the carbon dioxide concentration in the house H When becomes larger, ventilation is started when the carbon dioxide concentration exceeds a predetermined threshold, and ventilation is performed until it becomes equal to the external carbon dioxide concentration.

First, the ventilation operation when the outside air is higher than the inside of the house H will be described. In this case, the ventilation device 1 supplies the outside air to the house H after dehumidifying the outside air to the same degree as the humidity in the house H.

The ventilation device 1 causes the first heat exchanger 31 of the heat pump 30 to function as an evaporator and the second heat exchanger 32 as a condenser. A hygroscopic liquid L having a high solution concentration is placed in the liquid tank 16 of the processor 10.

The processor 10 sucks up the hygroscopic liquid L having a high solution concentration from the liquid tank 16, cools the hygroscopic liquid L in the first heat exchanger 31 functioning as an evaporator, and supplies the hygroscopic liquid L to the hygroscopic liquid supply unit 15. To do. The hygroscopic liquid supply unit 15 drops the hygroscopic liquid L onto the filler 14. The dropped hygroscopic liquid L slowly passes through the filler 14 and returns to the liquid tank 16.

At the same time as the above operation, the processor 10 rotates the fan 17 provided at the exhaust port 13 to take in air into the housing 11, and the air and liquid of the hygroscopic liquid L are filled with the filler 14. After the contact, the treated air is supplied into the house H through the exhaust port 13. Since the filler 14 includes the hygroscopic liquid L having a high solution concentration and a low temperature, the moisture in the air is absorbed by the hygroscopic liquid L, and the dehumidified air is supplied into the house H. In addition, since heat exchange is also performed simultaneously between the hygroscopic liquid L and air, air is cooled.

When the processing device 10 continues the dehumidifying operation, the hygroscopic liquid L is diluted and becomes difficult to absorb moisture in the air, so that the dehumidifying efficiency is lowered. Therefore, the hygroscopic liquid L is regenerated by the regenerator 40. The ventilator 1 supplies a part of the hygroscopic liquid L sucked out from the liquid tank 16 of the processing machine 10 to the first hygroscopic liquid pipe 61 and sends it to the regenerator 40. The amount of the hygroscopic liquid L sent to the regenerator 40 is adjusted by the three-way valve 23.

A second heat exchanger 32 functioning as a condenser is disposed in the middle of the first hygroscopic liquid pipe 61, and the hygroscopic liquid L sent to the regenerator 40 is the second heat exchanger 32. Heated by. The regenerator 40 regenerates the hygroscopic liquid L having a low solution concentration supplied from the first hygroscopic liquid conduit 61. Specifically, the hygroscopic liquid supply unit 45 a drops the hygroscopic liquid L heated by the second heat exchanger 32 onto the filler 44. The dropped hygroscopic liquid L enters the liquid tank 46 through the filler 44.

The regenerator 40 discharges air from the inside of the casing 41 by the fan 47 provided at the discharge port 43 simultaneously with the above operation. Thereby, air flows into the housing 41 through the intake port 42. The air that has flowed in comes into gas-liquid contact with the hygroscopic liquid L by the filler 44 and is then discharged from the discharge port 43. When the air contacts the hygroscopic liquid L, moisture is desorbed from the high temperature hygroscopic liquid L and escapes into the air, and the concentration of the hygroscopic liquid L increases. The hygroscopic liquid L that has passed through the filler 44 enters the liquid tank 46.

Part of the hygroscopic liquid L in the liquid tank 46 is sucked up by the pump 52 and supplied to the hygroscopic liquid supply unit 45 b through the supply pipe 51. At this time, the heating source 53 heats the hygroscopic liquid L. As a result, the moisture of the hygroscopic liquid L is more easily released, and the regenerator 40 can perform an efficient concentration process.

Further, a part of the hygroscopic liquid L in the liquid tank 46 is supplied to the first hygroscopic liquid pipe 61. The hygroscopic liquid L supplied to the first hygroscopic liquid conduit 61 is heated by the second heat exchanger 32 and supplied again to the hygroscopic liquid supply unit 45a. As the hygroscopic liquid L circulates between the filler 44 and the liquid tank 46 in this way, the concentration of the hygroscopic liquid L gradually increases.

The hygroscopic liquid L in the liquid tank 46 that has been subjected to the regeneration process returns to the processor 10 through the second hygroscopic liquid conduit 62. The hygroscopic liquid L undergoes heat exchange with the hygroscopic liquid L toward the regenerator 40 by the heat exchanger 64 on the way back to the processor 10, and the temperature decreases. The operation of supplying dehumidified air into the house H using the ventilation device 1 of the house air conditioning system 70 has been described above.

Next, the ventilation operation when the outside air is lower in humidity than in the house H will be described. In this case, the ventilator 1 supplies the outside air to the house H after humidifying it to the same degree as the humidity in the house H.

When the air is humidified by the ventilator 1, the heat pump 30 causes the first heat exchanger 31 to function as a condenser and the second heat exchanger 32 to function as an evaporator. A hygroscopic liquid L having a low solution concentration (containing a lot of water) is placed in the liquid tank 16 of the processing machine 10. In the case of the humidification process, the ventilation device 1 basically performs an operation opposite to the dehumidification process.

While the processor 10 heats the hygroscopic liquid L having a low solution concentration and drops it onto the filler 14, the processor 10 releases the moisture from the hygroscopic liquid L by passing the taken-in air through the filler 14. Humidify. In addition, heat exchange is also performed simultaneously between the hygroscopic liquid L and air, and air is heated.

When the processing unit 10 continues the humidification operation, the hygroscopic liquid L is concentrated and the moisture released into the air is reduced, so the hygroscopic liquid L is regenerated by the regenerator 40. The ventilator 1 supplies a part of the hygroscopic liquid L sucked out from the liquid tank 16 of the processing machine 10 to the first hygroscopic liquid pipe 61 and sends it to the regenerator 40.

Hygroscopic liquid L to be sent to the player 40 is cooled by the second heat exchanger 32 in the first hygroscopic-liquid pipe path 61. The cooled hygroscopic liquid L is supplied to the hygroscopic liquid supply unit 45a of the regenerator 40. Regeneration in which the hygroscopic liquid L absorbs moisture by passing the air taken in from the outside through the filler 44 while dropping the hygroscopic liquid L having a high concentration cooled by the hygroscopic liquid supply unit 45a onto the filler 44. Process. The hygroscopic liquid L that has passed through the filler 44 enters the liquid tank 46.

Part of the hygroscopic liquid L in the liquid tank 46 is sucked up by the pump 52 and supplied to the hygroscopic liquid supply unit 45 b through the supply pipe 51. A part of the hygroscopic liquid L in the liquid tank 46 is supplied to the first hygroscopic liquid pipe 61. The hygroscopic liquid L supplied to the first hygroscopic liquid conduit 61 is cooled by the second heat exchanger 32 and supplied again to the hygroscopic liquid supply unit 45a. As described above, the hygroscopic liquid L circulates between the filler 44 and the liquid tank 46, so that the concentration of the hygroscopic liquid L gradually decreases.

When diluting and regenerating the hygroscopic liquid L, the hygroscopic liquid L may be diluted by supplying water directly to the hygroscopic liquid L instead of taking moisture from the outside air into the hygroscopic liquid L. . The regenerator 40 opens the valve 55 of the water supply pipe 54 and supplies water to the liquid tank 46.

The hygroscopic liquid L in the liquid tank 46 that has been subjected to the regeneration process returns to the processor 10 through the second hygroscopic liquid conduit 62. The operation of supplying humidified air into the house H using the ventilation device 1 of the house air conditioning system 70 has been described above.

As described above, the air taken in from the outside is brought into gas-liquid contact with the cooled hygroscopic liquid L during dehumidification, and is brought into gas-liquid contact with the heated hygroscopic liquid L during humidification. Exchanges are also made. That is, the ventilator 1 can adjust the humidity of the air taken in from the outside and adjust the temperature. However, since the ventilator 1 performs the control using the humidity as a target, the temperature of the intake air may be different from the target temperature in the house H. In such a case, the temperature in the house H is adjusted to the target temperature using the inside-air combustion hot air heater 73 or the cooling fan 74.

In addition, based on the temperature difference between the solution temperature of the hygroscopic liquid L and the temperature of the outside air, the flow rate of the intake air, the supply amount of the hygroscopic liquid L, and the like, the temperature change in the house H accompanying ventilation is predicted, Before the remarkable temperature change occurs, the temperature may be adjusted using the inside-air combustion hot air heater 73 or the cooling fan 74. The house air conditioning system 70 according to the embodiment has been described above.

Since the air conditioning system for a house 70 of the present embodiment supplies the air into the house H after adjusting the humidity, it is possible to ventilate while maintaining the humidity in the house H. By maintaining the humidity in the house H in this way, it is possible to suppress the occurrence of disease and promote the growth of plants. Moreover, dew condensation can be suppressed by appropriately maintaining the humidity. Conventionally, water condensed on the top surface of the house falls and adheres to the plant, causing discoloration and the like. By using the house air conditioning system 70 of the present embodiment, such a problem is caused. Can be solved.

In the air conditioning system for a house 70 of the present embodiment, moisture contained in the air in the house H is diffused by taking in air whose humidity is adjusted. Thereby, the effect that the temperature of the air in the house H becomes uniform is acquired. FIG. 4A is a diagram showing the results of measuring the temperature and humidity measured at a height of 4 m in the house, and FIG. 4B is the temperature and humidity measured at a height of 1.5 m in the house. It is a figure which shows the result. FIG. 4C is a diagram showing temperature and humidity data outside the house for reference. Conventionally, the temperature differs depending on the height from the ground, but by using the house air conditioning system 70 of the present embodiment, the temperatures at the height of 4 m and the height of 1.5 m coincide. (See FIGS. 4A and 4B).

Since the ventilator 1 of the air conditioning system for a house 70 is in gas-liquid contact with lithium chloride, harmful bacteria that may be contained in the external air are removed, and the purified air is removed from the house H. Can be supplied to.

Since the house air conditioning system 70 has a configuration for performing ventilation, the house air combustion system 70 can burn oxygen in the house H, and therefore uses an indoor air combustion warm air heater 73 that is more energy efficient than the outside air combustion type. it can. Thereby, heating cost can be reduced and the running cost of house H cultivation can be suppressed.

Since the house air conditioning system 70 adjusts humidity (latent heat), it is not necessary to reduce the room temperature (sensible heat) so much by cooling, and the cooling fan 74 using ground water or water is suitable for the environment. Can produce. Thereby, a cooling cost can be reduced and the running cost of house H cultivation can be suppressed.

As mentioned above, although the air conditioning system for houses of the present invention has been described in detail with reference to the embodiment, the present invention is not limited to the above-described embodiment.

In the above-described embodiment, the example in which the temperature of the hygroscopic liquid L is controlled using the heat pump 30 has been described, but the heat pump 30 is not necessarily used. For example, when exhaust heat at a sufficient temperature can be obtained from the cogeneration generator 72, the hygroscopic liquid L may be heated using this, or the hygroscopic liquid L may be used using groundwater or irrigation water. It may be cooled.

The present invention has an excellent effect that ventilation can be performed while maintaining the environment in the house, and can be applied to a house such as a plant factory that manages the growth environment of plants.

DESCRIPTION OF SYMBOLS 1 House ventilation apparatus 10 Processing machine 11 Case 12 Intake port 13 Exhaust port 14 Filler 15 Hygroscopic liquid supply part 16 Liquid tank 17 Fan 18 Dustproof filter 19 Insectproof filter 20 Insectproof filter 21 Pipe 22 Pump 23 Three-way valve 30 Heat pump 31 First heat exchanger 32 Second heat exchanger 33 Compressor 34 Expansion valve 40 Regenerator 41 Housing 42 Intake port 43 Exhaust port 44 Filler 45 Hygroscopic liquid supply unit 46 Liquid tank 47 Fan 49 Tube 50 Pump 51 Supply pipe 52 Pump 53 Heat source 54 Water supply pipe 55 Valve 56 Dust-proof filter 57 Insect-proof filter 58 Insect-proof filter 61 First hygroscopic liquid pipe 62 Second hygroscopic liquid pipe 63 Valve 64 Heat exchanger 65 Sensor 66 Controller 70 House Air conditioning system 71 Illumination 72 Cogeneration generator 73 Inside air combustion hot air heater 74 Cooling fan

Claims

With a fan to send air into the house from outside the house,
A filler provided in a passage of air flowing from the outside of the house into the house;
A hygroscopic liquid supply section for supplying a hygroscopic liquid having a sterilizing effect to the filler;
A liquid tank containing the hygroscopic liquid that has passed through the filler;
A regenerator that regenerates a hygroscopic liquid having a changed concentration by contacting gas and liquid with air in the filler;
House ventilator with.
The house ventilator according to claim 1, wherein lithium chloride is used as the hygroscopic liquid.
The house ventilator according to claim 1 or 2, wherein the filler is provided so as to block an air passage.
A sensor for measuring the carbon dioxide concentration in the house;
The house ventilation apparatus according to any one of claims 1 to 3, wherein ventilation is performed so that the carbon dioxide concentration is equal to or higher than a predetermined threshold value.
The house ventilator according to any one of claims 1 to 4, further comprising an insect filter on an air passage from the outside of the house to the filler.
The house ventilator according to any one of claims 1 to 5, further comprising a dustproof filter on an air passage from the outside of the house to the filler.
The player is
A housing having an intake port for taking in air and an exhaust port for discharging air;
A hygroscopic liquid supply section for supplying hygroscopic liquid to be regenerated;
A filler for temporarily retaining the hygroscopic liquid in order to bring the hygroscopic liquid supplied from the hygroscopic liquid supply unit into gas-liquid contact with air; and
The house ventilator according to any one of claims 1 to 6, further comprising insect repellent filters on an air passage from the intake to the filler and on an air passage from the filler to the exhaust.
A ventilation device for a house according to any one of claims 1 to 7;
Inside air combustion type heating device installed in the house,
Air conditioning system for house with.
A ventilation device for a house according to any one of claims 1 to 7;
A cooling device using groundwater or irrigation water installed in the house;
Air conditioning system for house with.