JPH0727366A - Air quality regulator - Google Patents

Abstract

PURPOSE:To suppress a rise of the temperature of blown-off air on the room side and to improve dehumidifying capacity in an air quality regulator having dehumidifying, humidifying and ventilating functions. CONSTITUTION:An air quality regulator places a controller 28 for clarifying to purge in the case of transferring to an absorbing step from an end of clarifying step of dehumidifying operation. The purging step is so set as to increase number of revolutions of a blower 7 from that at the time of clarifying step while a suction damper 22 and a blow-off damper 27 remain at the same position as that of the clarifying step without generating heat from a heater 13. Accordingly, an adsorber 11 heated at the time of the clarifying step is quickly cooled, adsorption is rapidly advanced in the adsorbing step, blown-off air temperature to a room is lowered to suppress a temperature rise in the room, and clarifying is rapidly finished, number of cycles per unit time is increased to improve dehumidifying capacity.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air quality controller having functions of dehumidifying, humidifying, and ventilating and controlling the quality of indoor air such as humidity and cleanliness.

[0002]

2. Description of the Related Art Conventionally, no one has been able to perform dehumidification, humidification, ventilation, etc. with a single device, but as a similar product, for example, a TSA type dry system as disclosed in JP-A-63-286634 is disclosed. There is a dehumidifier.

This dry dehumidifying device will be described with reference to FIGS. 4 and 5. Reference numeral 1 denotes a casing forming an air passage. The casing 1 is installed on the outer wall 5, and the openings A and B provided on the outer wall 5 are provided in the casing 1 so that the outdoor air intake port 8 and the outdoor air discharge port 9 communicate with each other. ing. Also, casing 1
Is provided with an indoor air intake 6 corresponding to the outdoor air intake 8. The outdoor air intake 8 and the indoor air intake 6 are alternately opened and closed by a damper 1A installed in the casing 1. You can do it. Similarly, the casing 1 is provided with an indoor air discharge port 7 corresponding to the outdoor air discharge port 9. The outdoor air discharge port 9 and the indoor air discharge port 7 are the dampers 1 installed in the casing 1.
B can be opened and closed alternately. Also,
A blower 2, a heater 3 and an adsorbent 4 are arranged in this order from the upstream side in the air passage formed by the casing 1.

In the above apparatus, when the indoor air intake 6 and the indoor air discharge port 7 are open, the indoor air enters the casing 1 through the indoor air intake 6, and this indoor air is The air path in the casing 1 is blown by the blower 2 to reach the indoor air discharge port 7, and is blown out into the room through the indoor discharge port 7. Therefore, the room air passes through the inside of the adsorbent 4 provided in the casing 1 which is the air passage,
The adsorbent 4 removes the humidity of the indoor air and discharges dry air into the room.

On the contrary, when the indoor air inlet 6 and the indoor air outlet 7 are closed and the outdoor air inlet 8 and the outdoor air outlet 9 are opened to cause the heater 3 to generate heat, The heated air enters the adsorbent 4 through the outdoor air intake port 8, and the heated air desorbs the moisture adsorbed on the adsorbent 4 and discharges it to the outside through the outdoor discharge port 9. In this way, the indoor dehumidification is performed by repeating the circulation of the indoor air and the circulation of the outdoor air.

In such a conventional dry dehumidifying apparatus, as shown in FIG. 5, the operation is simply repeated by the adsorption step and the desorption step, and even when an operation similar to desorption purge is performed, the number of revolutions of the blower 2 is increased. It was general to stop energizing the heater 3 without changing.

[0007]

However, in the above conventional structure, the adsorbent is heated to a high temperature at the end of the desorption process, and in the state where it is possible to adsorb moisture as is clear from the adsorption isobaric characteristics. Absent. In such a state, the adsorbent desorbs moisture due to residual heat even after the heater is stopped,
In the cell of the adsorbent, the passing air is changed to humid air. Therefore, in the conventional one that moves to the adsorption process as it is,
I had the following problem.

1. Even if the indoor air is circulated, the moisture that has been desorbed by the residual heat is released into the room, and the dehumidifying effect is reduced.

2. The residual heat itself is blown out into the room, causing burns near the air outlet in the room or raising the room temperature, deteriorating the comfort feeling due to dehumidification.

The present invention is intended to solve the above problems, and it is an object of the present invention to reduce the temperature of the air blown into the room and to improve the dehumidification performance.

[0011]

In order to achieve the above object, the present invention provides an air passage, an adsorbing portion composed of an adsorbent and a heater disposed in the air passage, and air is sent to the adsorbing portion. A blower, a damper for switching the air passage between the indoor side and the outdoor side, an adsorption step of adsorbing moisture to the adsorbent by interlocking control of the heater, the blower and the damper, and an adsorbed moisture of the adsorbent. A configuration in which a desorption process for desorbing and a controller that is repeatedly operated alternately are provided, and the controller is provided with a desorption purge in which the rotation speed of the blower is set higher than that during the desorption process after the desorption process is completed. There is.

[0012]

With the above-described structure, the present invention operates the blower and alternately repeats the circulation of the indoor air and the circulation of the outdoor air while switching the air passage by the damper.

At this time, the outdoor circulating air remains at room temperature by causing the heater to generate heat only during indoor circulation.
Indoor circulating air becomes warm air. When this warm air passes through the adsorbent, it gives heat to the moisture adsorbed to the adsorbent, and when the adsorbed moisture receives heat exceeding the total amount of heat of adsorption and heat of wetting during adsorption, adsorption It is desorbed from the material and released into the room together with the circulating air (TSA method). The adsorbent that has desorbed the adsorbed moisture adsorbs and removes the moisture in the outdoor air that passes through the adsorbent during the outdoor circulation. The chamber is humidified by repeating this desorption and adsorption cycle.

By heating the heater only during outdoor circulation, the indoor circulation air remains at room temperature, but the outdoor circulation air becomes warm air. When this warm air passes through the adsorbent, it gives heat to the moisture adsorbed to the adsorbent, and when the adsorbed moisture receives heat exceeding the total amount of heat of adsorption and heat of wetting during adsorption, adsorption It is desorbed from the material and discharged together with the circulating air to the outside (TSA method). The adsorbent from which the adsorbed moisture is desorbed adsorbs and removes the moisture in the indoor air passing through the adsorbent during the indoor circulation. The chamber is dehumidified by repeating this desorption and adsorption cycle.

After the desorption process of the dehumidifying operation is completed, a desorption purge operation is performed in which the rotation speed of the blower is set higher than that during the desorption process, and the adsorbent quickly discharges the heat received during the desorption process to the outside of the room. At the same time, residual moisture desorbed from the adsorbent due to residual heat is also discharged to the outside of the room. Therefore, the adsorbent is rapidly cooled, the heat released into the room during the adsorption step is reduced, and the adsorption phenomenon can be caused quickly.

[0016]

Embodiments of the present invention will be described below with reference to FIGS. 1, 2 and 3
Will be described with reference to.

In FIGS. 1 and 2, the adsorbent 11 and the heater 13 are arranged in the air passage 14. A rectifying plate 15 is provided in the air passage 14 on the upstream side of the heater 13, and the adsorbent 11, the heater 13, the air passage 14, and the rectifying plate 15 are provided.
The suction portion 16 is constituted by. The blower 17 is the suction unit 16
Further, it is arranged at a position where the air is blown with the side of the straightening plate 15 upstream.

The suction air passage 18 connected to the suction port of the blower 17 has an indoor suction port 19 and an outdoor suction port 20,
The suction damper 22 driven by the first motor 21 allows either the indoor or the outdoor to communicate with the blower 17. The outlet air passage 23 connected to the air passage 14 includes an indoor outlet 24 and an outdoor exhaust outlet 25, and an outlet damper 27 driven by a second motor 26 allows only one of the inside and the outside of the air passage 14 to flow. Communicate with.

The heater 13, the blower 17, the first motor 21, and the second motor 26 are interlocked and controlled by a controller 28. The operation unit 29 inputs commands to the controller 28.

The above-mentioned components are arranged in a base 30 and a cabinet 31 as an exterior. The cabinet 31 is provided with the above-mentioned operation part 29, a suction louver 32 is provided at a portion where the indoor suction port 19 communicates with the room, and a blowout louver 33 is provided at a portion where the indoor air outlet 24 communicates with the room. is there.

In the above structure, the operation will be described below. First, in the operation unit 29, an operation power source (not shown) is turned on, and an operation mode switch (not shown) for dehumidification, humidification or ventilation is selected. When turned on, operation in the selected mode is performed according to the contents described below.

(Dehumidifying operation) In the dehumidifying operation, the adsorption step and the desorption step described below are alternately repeated to dehumidify the room.

In the desorption process, the suction damper 22 makes the outdoor suction port 20 communicate with the blower 17, and the blow-out damper 27 has the outdoor exhaust port 25 communicated with the air passage 14. When the heater 13 and the blower 17 are operated in this state, the outdoor air 34 introduced by the blower 17 through the outdoor suction port 20 is heated by the heater 13 to become warm air, and then passes through the adsorbent 11. At this time, the adsorbent 11
The moisture adsorbed on the adsorbent 11 is sequentially desorbed from the adsorbent 11 into the passing air when it receives heat corresponding to the total amount of heat released as adsorption heat at the time of adsorption and the moist heat. The heated outdoor air is discharged as outdoor air 35 through the outdoor exhaust port 25 together with the desorbed moisture.

After the completion of this desorption process, the operation shifts to the desorption purge as shown by D in FIG. That is, the heater 13 stops at the end of the desorption process, but the suction damper 22 and the blow-out damper 27 are at the same positions as in the desorption process. In this state, the rotation speed of the blower 17 is increased more than in the desorption process.
Therefore, the air volume of the blower 17 increases, and the adsorbent 11 exchanges the accumulated heat with the passing air C and releases it, and is rapidly cooled. In addition, at this time, the residual moisture desorbed by the residual heat after the heater 13 is stopped and present in the cells of the adsorbent 11 is promptly discharged to the outside of the adsorbent 11.

In the adsorption process, the suction damper 22 is in a position where the indoor suction port 19 is in communication with the blower 17, and the blowout damper 27 is in a position where the indoor blowout port 24 is in communication with the air passage 14. In this state, when the heater 13 is not operated and only the blower 17 is operated, the indoor air 39 introduced by the blower 17 through the indoor suction port 19 passes through the adsorbent 11. At this time, the passing air becomes a dry air by adsorbing the contained moisture to the adsorbent 11, that is, dehumidifying. The dry air is supplied to the room as the blown air 40 through the indoor air outlet 24.

In this adsorption process, the adsorbent 1 is used in the desorption process.
Since the excess heat received by No. 1 is discharged to the outside by the high air volume desorption purge, the temperature rise of the blown air 40 on the indoor side can be reduced. Further, at this time, since the cooling of the adsorbent 11 also progresses, the adsorption performance is improved as is clear from the adsorption isobaric characteristics. Further, since the residual moisture in the adsorbent 11 is discharged to the outside by the high air flow desorption purge, the desorption phenomenon rapidly progresses, and the adsorption process, the desorption process, and the desorption purge are performed per cycle. It takes less time. That is, the number of cycles per unit time is increased, and the dehumidifying ability is improved.

(Humidification operation) In the humidification operation, the adsorption step and the desorption step described below are alternately repeated to perform humidification in the room.

In the desorption process, the suction damper 22 communicates the indoor suction port 19 with the blower 17, and the blowout damper 27 is located with the indoor air outlet 24 communicated with the air passage 14. When the heater 13 and the blower 17 are operated in this state, the indoor air 39 introduced by the blower 17 through the indoor suction port 19 is heated by the heater 13 to become warm air, and then passes through the adsorbent 11. At this time, the adsorbent 11
The moisture adsorbed on the adsorbent 11 is sequentially desorbed from the adsorbent 11 into the passing air when it receives heat corresponding to the total amount of heat released as adsorption heat at the time of adsorption and the moist heat. The heated outdoor air is supplied to the room as the blown air 40 through the indoor outlet 24 together with the desorbed moisture to humidify.

In the adsorption step, the suction damper 22 is in a position where the outdoor suction port 20 communicates with the blower 17, and the blowout damper 27 is in a position where the outdoor exhaust port 25 communicates with the air passage 14. In this state, when the heater 13 is not operated and only the blower 17 is operated, the outdoor air 34 introduced by the blower 17 through the outdoor suction port 20 passes through the adsorbent 11. At this time, the moisture contained in the passing air is adsorbed by the adsorbent 11 to become dry air. This dry air is used as the outdoor exhaust port 2
After passing through 5, the exhaust gas 35 is discharged to the outside of the room.

(Ventilation operation) In the ventilation operation, the heater 13 is not operated.

The suction damper 22 connects the indoor suction port 19 to the blower 17, and the blow-out damper 27 is the outdoor exhaust port 25.
Is in a position communicating with the air passage 14. When the blower 17 is operated in this state, the blower 17 causes the indoor suction port 1
The indoor air 39 introduced via 9 is discharged as the exhaust air 35 to the outside of the room through the blower 17, the adsorption unit 16 and the outdoor exhaust port 25. At this time, since the introduced air passes through the adsorbent 11, the moisture content in the introduced air is adsorbed and removed in the initial stage of the operation, but the adsorbent 11 depends on the ventilation operation without desorption. It becomes saturated with the adsorbed moisture, and finally reaches a breakthrough state and stops adsorbing.
Therefore, even if it is configured to pass through the adsorbent 11, ventilation similar to that of a general ventilation device can be performed.

As described above, according to this embodiment, the dry dehumidifying / humidifying system using the adsorbent 11 is adopted, and the heater 13 is not operated during the desorption process to the adsorption process. A desorption purge in which the rotation speed of the blower 17 is set higher than in the process is provided. For this reason, it is possible to reduce the temperature of the air discharged from the blowout louver 33 and improve the dehumidification capacity while having the functions of dehumidification, humidification and ventilation that do not require the trouble of treating the water supply and drain water.

Further, the current plate 15 is provided on the upstream side of the heater 13.
Therefore, even if the air flow from the blower 17 has a variation in distribution, the straightening plate 15 reduces the variation in distribution and uniformly supplies hot air to the entire adsorbent 11. Moisture can be desorbed from 11 efficiently.

In this embodiment, two dampers, the suction damper 22 and the blowing damper 27, are provided as dampers for switching the air passage 14, but the number of dampers is not limited to two, and one or more dampers are provided. It is also possible. For example, when the function of the air quality controller is limited to dehumidification, it is possible to circulate the indoor air and discharge the desorbed air to the outside by connecting the suction side of the air passage 14 to only the room. Can perform the function of. Therefore, the damper need only have one blowout damper 27.

[0035]

As described above, according to the air conditioner of the present invention, the adsorbent heated in the desorption process can be quickly cooled, and the residual moisture inside the adsorption can be discharged quickly. The desorption phenomenon can proceed. Therefore, the temperature of the air blown into the room can be reduced, burns at the air outlet and the rise in room temperature can be prevented, and the adsorption performance of the adsorbent improves and the number of cycles per unit time also increases, improving dehumidification capacity. To do.

Further, the functions of dehumidifying, humidifying, and ventilation can be realized by one unit, and the device can be used easily without the trouble of treating the water supply and drain water.

[Brief description of drawings]

FIG. 1 is a structural diagram of a main body of an air quality adjuster according to an embodiment of the present invention.

FIG. 2 is an enlarged sectional perspective view showing a suction section of the air quality control device.

[Fig. 3] Operation sequence diagram of the air quality controller

FIG. 4 is a sectional view of a main body of a conventional dry dehumidifier.

FIG. 5 is an operation sequence diagram of the dry dehumidifier.

[Explanation of symbols]

 11 Adsorbent 13 Heater 14 Air Channel 15 Straightening Plate 16 Adsorption Part 17 Blower 22 Suction Damper 27 Blowout Damper 28 Controller

Continued Front Page (72) Inventor Yasuaki Tawa 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd.

Claims (2)

[Claims] 1. An air passage, an adsorbing portion composed of an adsorbent and a heater disposed in the air passage, a blower for sending air to the adsorbing portion, and the air passage is switched between an indoor side and an outdoor side. A damper, a controller that alternately operates an adsorption step of adsorbing moisture to the adsorbent by interlockingly controlling the heater, the blower, and the damper and a desorption step of desorbing adsorbed moisture of the adsorbent. The air quality controller provided with a desorption purge in which the controller sets the rotation speed of the blower higher than that during the desorption step after the desorption step. 2. The air conditioner according to claim 1, further comprising a straightening plate at an upstream end of the suction section.