JP2000117042A - Dry type dehumidifier - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently dehumidify an objective room with less energy consumption by a dry type dehumidifier. SOLUTION: In the dry type dehumidifier by which an air feed path 6 passes through from an outdoor side sucking port 4 to a dehumidifying rotor 2 capable of adsorbing and desorbing the moisture in the air and the air is fed from an indoor side discharge port 5, and on the other hand, an exhaust ventilation path 10 passes through from an indoor side sucking port 8 through a heating and regeneration means 3 and the dehumidifying rotor 2, and the air is exhausted from an outdoor side discharge port 9 to the outdoor, discharged heat from a fuel cell 12 is utilized as the heating regeneration means 3, thus the dry type dehumidifier for dehumidifying the objective room with less energy consumption is obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a so-called dry-type dehumidifier for performing dehumidification by utilizing the absorption and desorption of moisture using a hygroscopic element.

[0002]

2. Description of the Related Art Conventionally, a dry dehumidifier of this type is generally configured as shown in FIG. 3, and the dry dehumidifier will be described below with reference to FIG.

As shown in FIG. 1, a dry dehumidifier 101 comprises an exhaust ventilation passage 110 and an air supply ventilation passage 106. The exhaust ventilation passage 110 includes a heating / regenerating means 103, a dehumidification rotor 102 and an exhaust blower 111. The air supply passage 106 includes an air supply blower 107 and a dehumidification rotor 102.

The end face of the rotor is divided into a suction portion and a regeneration portion.
The processing air dehumidified by passing through the suction portion of the dehumidification rotor 102 is supplied from the indoor side discharge port 105. on the other hand,
The regeneration air is supplied from the indoor side suction port 108 to the heating / regeneration means 103.
After the dehumidification rotor 102 is regenerated through the regeneration portion of the dehumidification rotor 102, the air is exhausted from the outdoor outlet 109 by the exhaust blower 111. In order to regenerate the dehumidifying rotor 102, the regeneration air needs to be heated to about 120 ° C., and the regeneration air is heated by using an electric heater or the like for the heating and regeneration means 103.

[0005]

In such a conventional dry dehumidifier, an electric heater or the like must be used for heating and regenerating means, and a large amount of electric power is required. Energy-saving and efficient dehumidifiers are also required to reduce carbon emissions.

The present invention has been made to solve such a conventional problem, and an object of the present invention is to perform dehumidification of a target space with energy saving in a dry dehumidifier.

[0007]

In order to achieve the above object, a dry dehumidifier according to the present invention has an intake air passage communicating an outdoor-side suction port and an indoor-side discharge port, an indoor-side suction port and an outdoor-side discharge port. An exhaust ventilation path for communicating air, an air supply blower for supplying air, an exhaust blower for exhausting, and a dehumidifying rotor impregnated or coated with a moisture absorbent capable of absorbing and desorbing moisture in the air. A heating / regenerating unit for heating air in order to desorb moisture adsorbed on the dehumidification rotor, wherein the air supply ventilation passage passes through the dehumidification rotor from the outdoor-side suction port and suctions air from the indoor-side discharge port. On the other hand, the exhaust air passage passes through the heating / regenerating means and the dehumidifying rotor from the indoor-side suction port, and is exhausted to the outside from the outdoor-side discharge port. At least a part of the heating / regenerating means is a solid polymer. Type fuel cell body On the other hand either the exhaust heat from al exhaust heat and the reformer, or is characterized in that use both.

A second means for achieving the first object is a sensible heat exchange which can exchange only the temperature, in which heat exchange is performed between air supply after passing through a dehumidifying rotor of a dry dehumidifier and exhaust air before passing through a heating / regenerating means. It is characterized by installing a vessel.

A third means for achieving the first object is to utilize exhaust heat from an absorption-type air conditioner for at least a part of the heating / regenerating means of the dry dehumidifier.

A fourth means for achieving the first object is that at least a part of electricity supplied to the dry dehumidifier includes:
In particular, electricity generated from a polymer electrolyte fuel cell is used.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS According to the first, second, third and fourth means of the present invention, the dehumidification of a target space can be performed with energy saving.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0013]

(Embodiment 1) FIG. 1 is a schematic view of a dry dehumidifier according to an embodiment of the present invention.

As shown in the figure, a dry dehumidifier 1 has a dehumidifying rotor 2 impregnated or coated with a moisture absorbing agent capable of adsorbing and desorbing moisture in the air, for example, silica gel, zeolite, lithium chloride, and the like. A heating / regenerating means 3 for heating the air to desorb the adsorbed moisture is provided, and a supply air supply passage 6 for connecting the outdoor-side suction port 4 and the indoor-side discharge port 5 is provided for supplying air. An air blower 7 for providing an air blower 7 and exhausting air into an exhaust air passage 10 that connects the indoor-side suction port 8 and the outdoor-side discharge port 9.
Is provided.

Outside air passes through the air supply ventilation passage 6 from the outdoor-side suction port 4 through the dehumidifying rotor 2 and is supplied from the indoor-side discharge port 5 by the air supply blower 7, while the exhaust ventilation path 10 is connected to the indoor-side suction port. 8, the air passes through the heating / regenerating means 3 and the dehumidifying rotor 2, and is exhausted to the outside from the outdoor outlet 9 by the exhaust blower 11.

In the above configuration, air containing a large amount of outdoor moisture is supplied from the outdoor intake port 4 into the air supply ventilation passage 6, enters the dehumidification rotor 2 by the air supply blower 7, adsorbs moisture, and dehumidifies. At the same time, the air is heated by the heat of adsorption and becomes dehumidified air at a high temperature, and is supplied into the room from the indoor side discharge port 5.

On the other hand, the air exhausted from the indoor side intake port 8 into the exhaust ventilation passage 10 is heated through the heating / regenerating means 3 and is heated.
The dehumidifying rotor 2 is regenerated.

The exhaust gas has a structure in which moisture is released from the dehumidifying rotor 2 and then exhausted from the outdoor discharge port 9 by the exhaust blower 11.

The heating / regenerating means 3 in the above-described structure is provided with either heat exhausted from the main body generated during power generation of the fuel cell 12 in particular of a solid polymer type or heat exhausted from a reformer for generating hydrogen. Use one or both to save energy.

The operating temperature of a polymer electrolyte fuel cell is 80 ° C. to 100 ° C., which is near normal temperature, compared with other fuel cells, and the exhaust heat is used for heating / regenerating means and heating means. Dehumidification of the target space using the dry dehumidifier while generating power can be performed with energy saving.

When the temperature of the exhaust heat from the polymer electrolyte fuel cell main body is about 80 ° C., the regeneration by the dehumidifying rotor may not be performed sufficiently. In recent years, the performance of the dehumidifying rotor has been improved, and cooling can be sufficiently performed even at a performance of about 80 ° C., but a higher regeneration temperature is required to obtain further performance. In a fuel cell of a solid polymer type or the like, hydrogen is generated from city gas or the like using a reformer, and most of the reformers used here generate high-temperature exhaust heat due to a catalytic reaction or the like.

Of course, waste heat is used in the reformer itself and in the fuel cell system. However, waste heat exceeding 100 ° C. is generated. In addition, it is possible to improve the dehumidifying capacity of the target space using the dry dehumidifier while generating the power of the fuel cell, and to further promote energy saving.

Although the exhaust heat from the polymer electrolyte fuel cell has been described as the exhaust heat used in the heating and regenerating means, other types of fuel cells, such as phosphoric acid type, molten carbonate type, and solid electrolyte type, have been described. A fuel cell may be used, and there is no difference in the effects thereof.

(Embodiment 2) FIG. 2 shows a second embodiment of the present invention.
, The same air path configuration and parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted.

As shown in the figure, the air supply after passing through the dehumidifying rotor 2 of the dry dehumidifier 1 and the exhaust air before passing through the heating / regenerating means 3 are heat-exchanged, and a sensible heat exchanger 13 is provided which can exchange only the temperature. .

With the above structure, the regenerated air is heat-exchanged only with the high-temperature supply air after passing through the dehumidifying rotor, and is preheated before flowing into the heating and regenerating means 3. Can be reduced, and the target space can be further dehumidified with energy saving.

(Embodiment 3) Heat regeneration means 3 of a dry dehumidifier
In addition, it uses exhaust heat from an absorption type air conditioner, and an absorption type air conditioner (refrigerator) is a device that has attracted attention in recent years for non-fluorocarbons, such as power generation using gas or oil, or fuel cells. It operates by using relatively high-temperature exhaust heat (120 ° C or higher) generated during power generation by the system, and is used as a so-called co-generation system. In the same manner as in Example 1, the absorption type air conditioner can be operated and the dry type dehumidifier can also be operated. In particular, while the absorption type is used at a temperature of 120 ° C. or more, the dry type is used at a temperature of 120 to 8 ° C. or less.
Since the temperature is about 0 ° C., heat cascade can be used, dehumidification can be performed while cooling, and energy saving air conditioning can be performed as a total system.

(Embodiment 4) At least a part of the electricity supplied to the dry dehumidifier is operated using electricity generated from a fuel cell, particularly from a polymer electrolyte type, and this electricity generation is performed when a commercial power supply is used. In comparison, there is no power transmission loss, the power generation efficiency is high, the primary energy consumption is low, and as a result, the carbon dioxide emission is low.

In particular, when a fuel cell, especially a solid polymer type is applied, there is no carbon dioxide generated from the main body, and only a small amount is emitted when a reformer that generates hydrogen from city gas or the like is used. Is less affected.

Thus, by using the electricity obtained by this power generation, it is possible to perform air-conditioning that is energy-saving and that is friendly to the global environment and less affected by global warming.

[0031]

As is apparent from the above embodiments, according to the present invention, as means for heating the regenerated air for regenerating the dehumidifying rotor, exhaust heat from a polymer electrolyte fuel cell or an absorption type air conditioner can be used. By using the exhaust heat of the above, a dry dehumidifier capable of dehumidifying the target space with energy saving can be provided.

Further, by exchanging heat between the air supply after passing through the dehumidifying rotor and the exhaust before passing through the heating / regenerating means by using a sensible heat exchanger, heating / regeneration can be performed with energy saving, and furthermore, dehumidification of the target space can be performed with energy saving. A dry dehumidifier can be provided.

In addition, not only a normal commercial power source but also a low-loss electricity generated from a polymer electrolyte fuel cell is used.
An energy-saving dry dehumidifier can be provided.

[Brief description of the drawings]

FIG. 1 is a conceptual diagram of a dry dehumidifier according to Embodiment 1, 3 or 4 of the present invention.

FIG. 2 is a conceptual diagram of the dry dehumidifier of the second embodiment.

FIG. 3 is a conceptual diagram showing a conventional dry dehumidifier.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Dry-type dehumidifier 2 Dehumidification rotor 3 Heat regeneration means 4 Outdoor suction port 5 Indoor discharge port 6 Air supply ventilation path 7 Air supply blower 8 Indoor side suction port 9 Outdoor discharge port 10 Exhaust ventilation path 11 Exhaust air blower 12 Fuel cell 13 Sensible heat exchanger

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H01M 8/04 H01M 8/04 J F term (Reference) 3L113 AA01 AB03 AC07 AC16 AC21 AC25 AC29 AC45 AC46 AC48 AC49 AC52 AC53 AC63 AC67 BA01 DA01 DA02 DA03 DA26 4D012 CA01 CC04 CD05 CE03 CF04 CF08 CG03 CK01 CK02 CK03 4D052 AA08 CB01 DA00 DA06 DB01 FA04 FA05 FA06 GA04 GB11 HA01 HA03 HA14 HB02 HB06 5H027 AA06 BA01 DD00

Claims (4)

[Claims] 1. An air supply ventilation passage connecting an outdoor-side suction port and an indoor-side discharge port, an exhaust air-flow path connecting an indoor-side suction port and an outdoor-side discharge port, and an air supply blower for supplying air. And an exhaust blower for exhausting, a dehumidifying rotor impregnated or coated with a moisture absorbent capable of adsorbing and desorbing moisture in the air, and heating the air to desorb the moisture adsorbed on the dehumidifying rotor. Wherein the air supply passage passes through the dehumidification rotor from the outdoor-side suction port and is sucked in from the room-side discharge port, while the exhaust ventilation path is provided with the heat-regeneration from the room-side suction port. Means, exhausted to the outside from the outdoor outlet through the dehumidification rotor, and at least a part of the heating and regenerating means is provided with exhaust heat from the main body of a fuel cell, particularly a polymer electrolyte fuel cell, and a reformer. Heat from either, if Or a dry dehumidifier characterized by using both. 2. The dry dehumidifier according to claim 1, further comprising a sensible heat exchanger capable of exchanging only the temperature for exchanging heat between the air supply after passing through the dehumidifying rotor and the exhaust before passing through the heating / regenerating means. 3. The dry dehumidifier according to claim 1, wherein at least a part of the heating and regenerating means of the dry dehumidifier utilizes exhaust heat from an absorption type cooler. 4. The dry dehumidifier according to claim 1, wherein at least part of the electricity supplied to the dry dehumidifier uses electricity generated from a polymer electrolyte fuel cell.