JP2003021378A - Dehumidification air conditioning system - Google Patents

Abstract

[57] [Problem] To provide a compact dehumidifying air-conditioning system that can be operated all season without incorporating a heater, humidifier, etc., and to precisely control the temperature and humidity of the processing air supplied to the room. Provide a dehumidifying air-conditioning system that enables SOLUTION: The processing air side and the regeneration air side alternately pass while rotating, the processing air side adsorbs moisture contained in the processing air flowing through the processing air side, and the regeneration air side regenerates. A dehumidifying rotor arranged so that moisture is desorbed by the thermal energy of the regenerated air flowing on the air side;
In a dehumidifying air-conditioning system provided with a cooling means for appropriately cooling the processing air passing through the dehumidifying rotor and a heating means for giving a suitable heat energy to the regenerated air, the air is disposed at a processing air side outlet, Temperature of the processing air passing through the outlet, temperature detecting means for detecting humidity, humidity detecting means, and a set temperature, set humidity set at the time of operation of the dehumidifying air conditioning system and the detected value from the temperature detecting means, humidity detecting means. Control means for continuously and variably controlling the number of revolutions of the dehumidifying rotor so as to substantially coincide with each other.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dehumidifying air conditioning system in which another heating device / equipment is incorporated into a dehumidifying system for dehumidifying by a dehumidifying rotor so as to be operated all season.

[0002]

A conventional dehumidifying device 1 for dehumidifying by a dehumidifying rotor is as shown in FIG.
The treated air side 2 and the regenerated air side 3 are partitioned so as to be impermeable to each other, and have a stable speed, for example, 5 to 5 per hour.
A dehumidifying rotor (also referred to as a honeycomb rotor or a desiccant rotor) 4 that rotates at a constant speed within a range of about 30 rotations is
The treatment air side 2 and the regeneration air side 3 are arranged so as to pass alternately. When high-humidity treated air passes through the rotor on the treated air side, the moisture in the air moves into the rotor in an attempt to reach an equilibrium state with the moisture in the rotor.
The treated air is dehumidified. At this time, since the temperature of the treated air rises due to the moisture being adsorbed to the dehumidifying rotor 4, after being cooled to an appropriate temperature by the cooler 5,
Air is supplied to the desired space (room).

Dehumidifying rotor 4 that has absorbed the moisture of the treated air
Enters the regeneration air side 3 while continuing to rotate, and moisture is desorbed by the heat energy of the regeneration air heated appropriately by the heat source 6 as a regeneration heater,
The dehumidifying ability of the dehumidifying rotor 4 is reproduced, and it is possible to continuously dehumidify the treated air. The moisture desorbed from the dehumidifying rotor 4 is released to the outside air together with the regenerated air.

By the way, when the temperature and humidity of the outside air are low, the functions of the dehumidifying rotor 4 and the heat source 6 of the dehumidifying device 1 are normally suspended, so that the heater 7 and the humidifier 8 which are heating requirements are dehumidified. A hybrid dehumidifying air conditioner 9 that can be operated all seasons by incorporating it into the device 1.
Has been proposed (see FIG. 4). According to such a dehumidifying air conditioner 9, the dehumidifying rotor 4 is set to, for example, 1
The low-temperature, low-humidity process air that has passed through the dehumidifying rotor 4 is rotated at a constant speed within a range of about 150 to 250 rotations per hour, and is first heated by the heater 7 to an appropriate temperature or higher, and then by the humidifier 8. After being appropriately humidified, the air is supplied to the room while being appropriately cooled by the cooler 5.

Therefore, in order to operate the conventional dehumidifying device 1 as the dehumidifying air-conditioning device 9 all season, it is necessary to incorporate the heater 7, the humidifier 8 and the like for heating and humidifying the regenerated air. Not only does the apparatus 9 itself become large, but there are problems such as an increase in manufacturing cost and an increase in the number of construction steps such as connecting a water absorption pipe to the humidifier 8. Further, the dehumidifying air-conditioning apparatus 9 controls the temperature and humidity of the treated air after passing through the dehumidifying rotor 4 by the heater 7, the humidifier 8, and the cooler 5.
However, since the temperature and humidity of the treated air after passing through the dehumidifying rotor 4 change every moment, it is necessary to keep the temperature and humidity of the treated air supplied indoors constant. It was very difficult.

Therefore, the present invention has been made to solve the problems of the conventional dehumidifying and air-conditioning system as described above, and does not include a heater, a humidifier, etc. It is an object of the present invention to provide a compact dehumidifying air conditioning system that can be operated and provide a dehumidifying air conditioning system that enables precise control of the temperature and humidity of the process air supplied to the room.

[0007]

In order to achieve the above-mentioned object, according to the present invention, while continuing rotation, the treated air side and the regenerated air side are alternately passed, and the treated air side flows through the treated air side. Dehumidification rotor arranged to adsorb moisture contained in the treated air and to be desorbed on the regeneration air side by thermal energy of the regeneration air flowing on the regeneration air side, and the dehumidification rotor. In the dehumidifying air-conditioning system comprising a cooling means for appropriately cooling the treated air and a heating means for imparting appropriate heat energy to the regenerated air, the dehumidifying air conditioning system is disposed at the treated air side outlet and passes through the treated air side outlet. Temperature detection means for detecting the temperature and humidity of the treated air, a humidity detection means, a set temperature set during the operation of the dehumidifying air-conditioning system, the set humidity and the detected value from the temperature detection means, the humidity detection means. As substantially coincide, characterized in that a control means for variably controlling continuously the rotational speed of the dehumidification rotor.

Further, according to the present invention, the control means controls the cooling means so that the set value set during the operation of the dehumidifying air-conditioning system and the detected values from the temperature detecting means and the humidity detecting means are substantially the same. It is characterized in that the capacity of the heating means is continuously controlled.

Further, the present invention is characterized in that the heating means generates water with combustion.

Still further, according to the present invention, the heating means is
It is characterized by being a combustion gas of a direct-burning burner and other heat source machines that generate water with combustion.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION The most preferred embodiment of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a configuration diagram for explaining an example of an embodiment of the present invention, and FIG. 2 is an explanatory diagram for explaining characteristics of a dehumidifying rotor in the example.

First, the basic construction of this dehumidifying air-conditioning system will be described with reference to FIG. Inside the casing of the dehumidifying air conditioner 10, a treated air side 11 and a regenerated air side 12 are formed so as to be impermeable to each other, and a dehumidified rotor 13 that alternately passes through the treated air side 11 and the regenerated air side 12 is provided. It is provided so as to be rotatable in one direction.

The dehumidifying rotor 13 is a variable speed rotor whose rotation speed is variably controlled by the control unit 14, and for example, the rotation speed is continuously variable within a range of about 5 to 250 rotations per hour. It is like this. The dehumidifying rotor 13 is filled with a silica-based or zeolite-based solid moisture absorbent, and when the treated air having a high humidity is passed through the treated air side rotor, the moisture in the treated air equilibrates with the moisture inside the rotor. When the state is maintained, it moves into the rotor to dehumidify the process air.

Dehumidifying rotor 13 that has absorbed the moisture of the treated air
While continuing to rotate, enters the regeneration air side 12, is arranged upstream of the regeneration air side 12, and has a control unit 14
A heat source (preferably an open flame burner) whose capacity is controlled by
By sending regeneration air heated appropriately by 5, moisture is desorbed and the dehumidification capacity of the dehumidification rotor 13 is regenerated. Then, the moisture desorbed from the dehumidifying rotor 13 is discharged to the outside air together with the regenerated air. Depending on the rotation speed of the dehumidifying rotor 13, the heat source 15, that is, the moisture (moisture content) generated when the direct-burning burner is burned is not absorbed and desorbed by the regenerated air side rotor and is transferred to the treated air side 11. An air filter (not shown) that cleans the regenerated air heated by the open flame burner while being sent may be mounted downstream of the direct flame burner. If an air filter cannot be installed downstream of the direct-burning burner, an air filter may be installed downstream of the treated air 12, for example, on the downstream side of a cooler 16 described below to clean the treated air. Further, the heat source 15 is not limited to the direct-fired burner incorporated in the dehumidifying air conditioner 10, is a separate body from the dehumidifying air conditioner 10, and is a heat source device that generates water with combustion, for example, a private home. You may make it utilize the combustion gas, such as a gas turbine used for electric power generation, a gas boiler, etc.

Downstream of the treated air side 11, the capacity is controlled by the control unit 14, and a cooler (aftercooler) 16 for appropriately cooling the treated air whose temperature has risen due to moisture being absorbed by the treated air side rotor. And a temperature sensor (thermistor) 17 that detects the temperature and humidity (relative humidity) of the process air immediately before being supplied to a predetermined space (for example, indoors) by being cooled by the cooler 16 and outputs a capacity control signal. , And a humidity sensor 18 are provided. Output signals (capacity control signals) output from the temperature sensor 17 and the humidity sensor 18 are input to the control unit 14.

The control unit 14 operates the functions of the dehumidifying rotor 13 and the heat source 15 all season, and
Based on at least the output signal from the humidity sensor 18,
The rotation speed of the dehumidification rotor 13 is set so that the humidity of the treated air immediately before being supplied to the room is maintained substantially constant at the preset humidity set by the user when the dehumidification air conditioner 10 is operating.
It is preset to perform PID control (proportional integral derivative control). Therefore, the rotation speed of the dehumidifying rotor 13 is continuously variably controlled within a range of, for example, a minimum of 5 rotations to a maximum of around 250 rotations per hour. Further, the control unit 14 determines that the temperature of the treated air immediately before being supplied into the room is substantially constant to the set temperature set by the user when the dehumidifying air conditioner 10 is operating, based on at least the output signal from the temperature sensor 17. Heat source 15 to maintain and continue
It is preset to perform PID control on the cooler 16.

That is, the control unit 14 variably controls the dehumidifying rotor 13 in a low rotation range at the time when dehumidifying by the dehumidifying air conditioner 10 is required, that is, when the outside air is hot and humid, and operates as a normal dehumidifying rotor. Then, dehumidification of the treated air as described above is performed. In addition, when the dehumidification heating is required, that is, when the outside air is low in temperature and humidity, the control unit 14 changes the rotation speed of the dehumidification rotor 13 from the low rotation speed range to the high rotation speed range while keeping the dehumidification rotor 13 to some extent. The control air is variably controlled to dehumidify the treated air, and at the same time, the amount of heat stored in the regenerated air side rotor by the heat energy of the heated regenerated air is rotated along with the rotation of the dehumidification rotor 13 and the treated air side 11. It is operated as a heat exchange rotor that shifts to the process to heat the process air. Further, the control unit 14 variably controls the dehumidification rotor 13 in a high rotation range at the time when heating is required, that is, when the outside air is low temperature and low humidity, thereby dehumidifying the dehumidification function of the dehumidification rotor 13 while exchanging heat. While operating as a rotor, the regenerated air side rotor that absorbs moisture generated by combustion of the heat source (direct burner) 15 is sent to the treated air side 11 to perform humidification and heating of the treated air.

Next, the operation of the dehumidifying air conditioning system will be described mainly with reference to FIG. First, at a time when the outside air is hot and humid and dehumidification by the dehumidifying air conditioner 10 is required, the control unit 14 appropriately controls the drive of the dehumidifying rotor 13, the heat source 15, and the cooler 16, and per hour. The humidified treated air (indicated by the one-dot chain line in FIG. 2) is passed through the treated air side rotor of the dehumidifying rotor 13 that is rotated at a variable speed within a range of about 5 to 30 revolutions to absorb the moisture and thereby Dehumidification is performed.

Then, the temperature of the processing air dehumidified by the dehumidifying rotor 13 is as shown by the thin line in FIG.
Regardless of the number of rotations of the dehumidifying rotor 13, the temperature is higher than that before passing through the dehumidifying rotor. Further, the moisture content of the treated air that has passed through the dehumidification rotor 13 has a higher dehumidification capacity as the dehumidification rotor 13 has a lower speed, as indicated by the broken line in FIG. Therefore, the control unit 14 controls the dehumidifying rotor 13 based on at least the output signal from the humidity sensor 18 so that the humidity of the treated air immediately before being supplied to the room substantially matches the preset humidity. The rotation speed is continuously and variably controlled in the low speed rotation range, and at least the output signal from the temperature sensor 17 is adjusted so that the temperature of the processing air on the heating side at that time substantially matches the preset temperature. Based on this, the capacity of the cooler 16 is continuously controlled.

Due to these things, the control unit 14
On the basis of the output signals from the temperature sensor 17 and the humidity sensor 18, the dehumidifying rotor 13 is continuously variably controlled in the low rotation region, and the capacity of the cooler 16 is continuously controlled to constantly flow out into the room. The temperature and humidity of the immediately preceding treated air can be made to substantially match the set temperature and humidity, and the state can be easily maintained continuously. By the way, the dehumidification rotor 13 which has absorbed the moisture of the treated air enters the regeneration air side 12 while continuing to rotate, and is heated by the heat energy of the regeneration air heated appropriately by the heat source 15 whose capacity is controlled by the control unit 14. Moisture is desorbed and the dehumidifying capacity is regenerated.

Next, the outside air is low in temperature and humidity, and the control unit 14 at the time when dehumidification air-conditioning apparatus 10 needs dehumidification heating.
The operation of will be described. Although the dehumidifying capacity of the dehumidifying rotor 13 tends to decrease as the dehumidifying rotor 13 moves from the low speed side to the high speed side, as shown by the broken line in FIG. As the number of rotations increases, the tendency that the heat energy applied to the regenerated air side rotor when desorbing moisture is transferred to the treated air side 11 together with the rotation of the dehumidifying rotor 13 is more likely to be used. As a result, the temperature of the process air after passing through the dehumidifying rotor is higher than that before passing through the dehumidifying rotor, as shown by the thin line in FIG. The temperature rises.

Therefore, the control unit 14 rotates the dehumidification rotor 13 on the higher rotation side than within the range of about 5 to 30 rotations per hour so that the dehumidification rotor 13 maintains the dehumidification function to some extent, and the treated air is treated. The dehumidification is performed, and the heat energy of the regenerated air heated by the heat source 15 is stored in the regenerated air side rotor. At this time, the heat source 1
5, that is, the moisture when the direct-burning burner burns and the moisture absorbed by the treated air side rotor are both desorbed, but the regenerated air side rotor having thermal energy is transferred to the treated air side 11 while continuing to rotate. Dehumidification heating of the regenerated air is carried out by entering the regenerated air having a low temperature and a high humidity.

Therefore, based on at least the output signal from the humidity sensor 18, the control unit 14 determines that the humidity of the treated air immediately before being supplied to the room is substantially equal to the preset humidity set when the dehumidifying air conditioner 10 is operating. To match
The processing air is dehumidified by variably controlling the rotation speed of the dehumidification rotor 13, and the processing air that has passed through the dehumidification rotor 13 is heated by operating the dehumidification rotor 13 as a heat exchange rotor. And the control unit 14
Controls the capacity of the cooler 16 continuously based on at least the output signal from the temperature sensor 17 so that the temperature of the heated treated air substantially matches the preset temperature when the dehumidifying air conditioner 10 is operating.

Due to these things, the control unit 14
Is to continuously variably control the rotation speed of the dehumidification rotor 13 from a low rotation range to a high rotation range while maintaining the dehumidification function of the dehumidification rotor 13 to some extent based on at least the output signal from the humidity sensor 18. As a result, it is possible to easily and continuously maintain the state in which the humidity of the treated air immediately before flowing out into the room is substantially matched with the set humidity, and at least the cooler 16 is continuously operated based on the output signal from the temperature sensor 17. By controlling the capacity in the above manner, it becomes possible to easily and continuously maintain the state in which the temperature of the heated processing air substantially matches the set temperature.

Next, the operation of the control unit 14 at the time when the outside air is low in temperature and humidity and heating by the dehumidifying air conditioner 10, that is, humidification heating is required, will be described. Dehumidifying rotor 14
As shown by the broken line in FIG. 2, although the dehumidifying ability of No. 1 is lost as the rotation speed increases, the regeneration by absorbing the moisture generated by the combustion of the heat source (direct burner) 15 is performed. The process air is humidified by feeding the air side rotor to the process air side 11. Further, the dehumidification rotor 13 in the high rotation speed region is operated as a heat exchange rotor that transfers the heat energy applied to the regenerated air side rotor to the treated air side 11 along with the rotation of the dehumidified rotor 13, and thus the treated air side rotor. The process air passing through the chamber is heated. Therefore, the temperature of the treated air after passing through the dehumidifying rotor is considerably higher than that before passing through the dehumidifying rotor, as indicated by the thin line in FIG.

Therefore, the control unit 14 rotates the dehumidifying rotor 13 within a range of about 150 to 250 rotations per hour, and causes the regeneration air side rotor to store the heat energy of the regeneration air heated by the heat source 15. At the same time, the heat source 15, that is, the moisture when the direct-burning burner burns is absorbed. The regeneration air side rotor having both heat energy and moisture enters the treated air side 11 while continuing to rotate, and the low temperature and low humidity regeneration air is fed into the rotor to heat and humidify the regeneration air.

Therefore, based on at least the output signal from the humidity sensor 18, the control unit 14 causes the humidity of the treated air immediately before being supplied into the room to be substantially the same as the humidity preset when the dehumidifying air conditioner 10 is in operation. As described above, the dehumidifying rotor 13 in the high rotation range is continuously variably controlled to appropriately humidify the treated air, and the treated air heated by passing through the dehumidifying rotor 13 operated as a heat exchange rotor. The temperature of the cooler 1 is at least based on the output signal from the temperature sensor 17 so that the temperature of the cooler 1 substantially matches the temperature preset when the dehumidifying air conditioner 10 is operated.
6 is capacity controlled continuously.

Due to these, the control unit 14
Is configured to continuously variably control the rotation speed of the dehumidifying rotor 13 in a high rotation range based on at least the output signal from the humidity sensor 18, so that the humidity of the treated air immediately before flowing into the room is substantially equal to the set humidity. It is possible to easily and continuously maintain such a state, and continuously control the capacity of the heat source 15 and the cooler 16 on the basis of at least the output signal from the temperature sensor 17 to thereby control the temperature of the heated process air. It becomes possible to easily and continuously maintain the temperature in a state of substantially matching the set temperature.

If the heat source 15 is an equipment such as a direct-burning burner that produces water with combustion, a humidifier as in the prior art is not required, but the heat source 15 is a hot water coil, a steam coil, or the like. In the case of the above equipment, a humidifier is required separately, but the conventional heater is not required.

As described above, the dehumidifying air conditioner 10 of the present invention
According to the method, the rotation speed control of the dehumidifying rotor 13 and the heat source 1 are performed.
5. The dehumidification by the dehumidifying air conditioner 10 is necessary because the control unit 14 controls the capacity of the cooler 16 based on the detection values from the temperature sensor 17 and the humidity sensor 18 arranged at the outlet of the processing air. Dehumidification rotor 13
Is variably controlled in a low rotation range to operate as a normal dehumidifying rotor to dehumidify the treated air, and when dehumidification heating is required, the rotation speed of the dehumidification rotor 13 is changed from a low rotation range to a high rotation range. By performing variably control and operating as a heat exchange rotor while the dehumidification rotor 13 retains a dehumidification function to some extent, dehumidification heating of the treated air is performed, and when heating is required,
By variably controlling the dehumidifying rotor 13 in a high rotation range, the dehumidifying function of the dehumidifying rotor 13 is lost, while the dehumidifying rotor 13 is operated as a heat exchange rotor, so that humidification and heating of the treated air can be performed. Furthermore, the temperature of the process air supplied from the dehumidifying air conditioner 10 is determined by the dehumidifying rotor 13
The temperature of the process air transferred to the heating side when passing through
Since the control unit 14 based on at least the detection value from the temperature sensor 17 appropriately cools by the cooler 16 whose capacity is controlled, the temperature of the process air supplied from the dehumidifying air conditioner 10 is precisely controlled. Will be able to.

As a result, the dehumidifying air conditioner 10 can easily make the temperature and humidity of the treated air immediately before flowing into the room almost equal to the set temperature and humidity, and easily maintain the state. And will be able to operate all season. Moreover, since it is not necessary to incorporate a heater, a humidifier or the like for heating and humidifying the reproduction air into the dehumidifying air conditioner 10, downsizing of the dehumidifying air conditioner 10, cost reduction, facilitation of construction, etc. You can enjoy the benefits.

[0032]

As described above, according to the dehumidifying air-conditioning system of the present invention, a compact dehumidifying air-conditioning system that enables all-season operation without incorporating a heater, a humidifier, etc. It is possible to provide a dehumidifying air-conditioning system that enables precise control of the temperature and humidity of the supplied process air.

[Brief description of drawings]

FIG. 1 is a configuration diagram for explaining an example in an embodiment of the present invention.

FIG. 2 is an explanatory diagram for explaining characteristics of the dehumidifying rotor in the same example.

FIG. 3 is an explanatory diagram for explaining a conventional dehumidification system.

FIG. 4 is an explanatory diagram for explaining a conventional dehumidifying air conditioning system.

[Explanation of symbols]

10 Dehumidifying air conditioner 11 Processed air side 12 Playback air side 13 Dehumidifying rotor 14 Control unit 15 heat source 16 Cooler 17 Temperature sensor 18 Humidity sensor

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Taichi Sumiyoshi             1-5-20 Kaigan, Minato-ku, Tokyo Tokyo Gas             Within the corporation F-term (reference) 3L053 BC02 BC05 BC09 BC10                 3L060 AA06 CC06 DD02 EE23 EE24                       EE25                 4D052 AA08 CB00 DA00 DB01 GA01                       GA03 GB02 GB03 GB09 HA01                       HA03 HB02

Claims (4)

[Claims] 1. While continuing to rotate, it alternately passes through the treated air side and the regenerated air side, the treated air side adsorbs moisture contained in the treated air flowing through the treated air side, and the regenerated air side. Then, the dehumidifying rotor arranged so that the moisture is desorbed by the heat energy of the regenerating air flowing through the regenerating air side, the cooling means for appropriately cooling the treated air passing through the dehumidifying rotor, and the regenerating air In a dehumidifying air-conditioning system provided with a heating means for giving an appropriate amount of heat energy, a temperature detecting means for detecting the temperature and humidity of the processing air which is disposed at the processing air side outlet and which passes through the processing air side outlet, and humidity detection. Means and the set temperature and set humidity set during the operation of the dehumidifying air-conditioning system, and the rotation speed of the dehumidifying rotor so that the detected values from the temperature detecting means and the humidity detecting means substantially match. Dehumidifying air-conditioning system is characterized in that a control means for variably controlled. 2. The control means continuously connects the cooling means and the heating means so that the set value set during the operation of the dehumidifying and air-conditioning system and the detected values from the temperature detecting means and the humidity detecting means substantially coincide with each other. The dehumidifying air-conditioning system according to claim 1, wherein the dehumidifying air-conditioning system controls the capacity. 3. The dehumidifying air-conditioning system according to claim 2, wherein the heating means generates water with combustion. 4. The dehumidifying air-conditioning system according to claim 3, wherein the heating means is a combustion gas of an open flame burner and another heat source device that generates water with combustion.