JP2002273150A - Dehumidifying drier - Google Patents

Abstract

PROBLEM TO BE SOLVED: To accelerate the drying of wet clothes by converting room temperature humid air into high temperature dry air. SOLUTION: Air which is passed through an adsorption rotor (4) and a heat exchanger (3) is subjected to heat exchange with a regeneration heater case (5) to convert the air into high temperature dry air.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dehumidifying dryer in which room air passing through a heat exchanger is heated to a high temperature and exhausted indoors by a regeneration heater case for a regeneration heater for regenerating a moisture absorbent of an adsorption rotor.

[0002]

2. Description of the Related Art A dehumidifying dryer is used for dehumidifying a drying room or a bedroom for a bathroom or wet clothes. An example of this dehumidifying dryer is described in, for example, Japanese Patent Application Laid-Open No. H11-300145.
No. 1993. This example includes, in a case, a filter; a condenser; a dehumidifying rotor; a suction fan; a dehumidifying rotor regeneration air circuit passing through the dehumidification rotor and the condenser and including a fan and a regeneration heater.

The air to be dehumidified in a drying chamber or the like is sucked by a fan, takes out dust by a filter, and then passes through a condenser. Here, heat exchange is performed with the air for regeneration of the dehumidification rotor in the condenser, and the temperature of the air to be dehumidified increases and the moisture of the air for regeneration is dewed. The heated air to be dehumidified passes through the dehumidification rotor and is absorbed by the desiccant to become dry air. In addition, at this time, the temperature of the dry air is increased by the self-heating of the desiccant, and the dry air is discharged into the room from the case as heated air.

[0004] Regeneration of the moisture-absorbing rotor that has absorbed moisture is performed by heating the air in the air circuit for regeneration of the dehumidifying rotor with a regeneration heater to produce high-temperature air, and blowing the high-temperature air to the dehumidification rotor with a fan. That is, the heated regeneration air receives moisture from the desiccant of the dehumidifying rotor and is sent to the condenser. This air radiates heat in the condenser to condense water, and is sent again to the regeneration heater by the fan. Condensed water is stored in a tank.

[0005] The dehumidifying rotor is formed by impregnating and supporting a moisture absorbent such as zeolite or silica gel on a belt-like base material such as corrugated paper, and corrugating the material to form a rotor. The dehumidification rotor is rotated by a motor, and is divided into a dehumidification section through which air to be dehumidified passes and a regeneration section through which regeneration air heated to a high temperature (200 to 250 ° C.) by the regeneration heater passes. The portion constituting the regeneration air circuit is a regeneration unit, and the rotation of the dehumidification rotor changes the dehumidification unit into a regeneration unit, and the regeneration unit sequentially changes into a dehumidification unit.

[0006]

In the prior art as described above, a heat recovery heat exchanger is attached to the regeneration air circuit, and the regeneration air before entering the regeneration heater and the heated dry air passing through the dehumidification rotor are combined. Heat exchange. That is, the heated air is radiating heat and the regeneration air is absorbing heat.

Although this method is an effective means for saving power of the regenerative heater, it is not suitable for a dehumidifier used in a drying room for wet clothes such as ski clothes and laundry. That is,
The temperature of the discharged air is low and it takes time to dry the wet clothes.

Therefore, an object of the present invention is to solve the above-mentioned disadvantages of the prior art.

[0009]

In order to solve the above-mentioned problems, the present invention provides a means for exchanging heat between a regeneration heater case and dehumidified air exiting an adsorption rotor and discharging the regenerated heater case into a room as high-temperature dry air. adopt. Thereby, high-temperature, low-humidity dry air is sent to a drying room or the like, and dehumidification and drying of a bathroom or wet clothing can be efficiently and early performed.

According to the present invention, there are provided a circulation fan for sucking air to be dehumidified, a heat exchanger for passing suction air, an adsorption rotor for dehumidifying at least a part of suction air passing through the heat exchanger, and a heat exchanger. A regeneration air circulation circuit that passes through the interior and the regeneration section of the adsorption rotor, a fan and a regeneration heater disposed in the regeneration air circulation circuit, and a regeneration heater case that houses the regeneration heater is disposed in a dehumidification air passage from which the air is blown out. A dehumidifying dryer is provided.

[0011] Preferably, the temperature of the dehumidified air to be released is further increased by the regeneration heater case.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the present invention will be described with reference to FIG. A circulation fan 2, a heat exchanger 3, an adsorption rotor 4, and a regenerative heater case 5 are sequentially arranged in a case, that is, a housing 1 as an outer box of the dehumidifying dryer. The circulating fan 2 distributes a duct 2-1 and room temperature and humid air (eg, air from a bathroom, clothing, or a ski drying room) as dehumidified air in the duct 2-1. The fan is provided with a fan for sucking more air, and the sucked room-temperature and humid air passes through the heat exchanger 3 through the duct to absorb heat, raise the temperature, and travel toward the suction rotor 4. The outlet of the duct 2-1 is positioned so as to open toward the center or one side of the heat exchanger 3, so that a small space is left between the outlet and the front of the heat exchanger 3.

As shown in FIG. 2, the heat exchanger 3 comprises synthetic resin sheets 6 and 7 opposing to each other and a space 8 formed therein. A plurality of independent passages 9 for passing the normal temperature and high humidity air are formed. The passage 9 is formed by joining a partition 10 around an opening provided in one sheet 6 to the other sheet 7. This partition 10 defines in the space 8 a circulation path 11 for some regeneration air.

The space 8 communicates with the suction rotor 4 and the regeneration heater case 5 through a suction port 12 and an outlet port 13 on a diagonal line between the suction port 12 and the suction port. The heat exchanger 3 is fixed to the inner wall of the housing 1 using mounting pieces 14 and 15 so as to leave a slight gap with respect to the inner wall. The heat exchanger 3 has a drain port 16 for draining dew condensation water in the space 8 at its lower part. The drainage port 16 is opened at the lowermost end of the inclined lower surface 17 'to enhance drainage efficiency.

The suction rotor 4 is formed by undulating a corrugated cardboard sheet with silica gel or zeolite and applying a hygroscopic agent to the surface thereof, and has a structure in which this sheet is spirally wound. The suction rotor 4 is rotated by a motor (not shown). A regeneration section (portion through which high-temperature regeneration air passes) 17 of the adsorption rotor 4 is connected to the suction port 12, and the regeneration air is sent to the inside 8 of the heat exchanger 3 through the regeneration section 17.

The regeneration section 17 of the suction rotor 4 faces the outlet of the regeneration heater case 5. The inlet of the regenerative heater case 5 is connected to the outlet port 13 of the heat exchanger 3. In the regeneration heater case 5, a regeneration heater 18 and a regeneration fan 19 are incorporated. The regeneration fan 19 sucks regeneration air from the heat exchanger 3, raises the regeneration air to a high temperature (200 to 250 ° C.) by the regeneration heater 18, and regenerates the regeneration unit 12 of the adsorption rotor 4.
It works to send to. The high-temperature regenerated air absorbs the moisture in the regenerating section 17 and after drying the dehumidifier, enters the heat exchanger 3 and
Here, it exchanges heat with normal temperature and humid air, dew condensation reduces humidity,
It returns to the inside of the regeneration heater case 5. That is, the regeneration air circulates in the regeneration air circuit.

The humidity of the dehumidified air that has passed through the dehumidifying section of the suction rotor 4 decreases in humidity, and moves toward the outlet of the housing 1. The high-temperature portion of the regeneration heater case 5 that accommodates the regeneration heater 18 is located in this air path. For this reason, the air that has passed through the dehumidifying section is heated by the high-temperature portion of the regenerative heater case 5 and becomes high-temperature dry air, which is blown out of the housing 1. The portion of the dehumidified air that has passed through the heat exchanger 3 and does not pass through the dehumidifying portion of the adsorption rotor 4 is heated by the high-temperature portion of the regeneration heater case 5 and joins with the air that has passed through the dehumidifying portion.

Next, an example of dehumidification in which a dehumidifier / dryer in which the capacity of the stainless steel housing 1 is 840 cm ² and the output of the regenerating heater 18 is 1200 W is arranged in a room where wet clothes are hung will be described. The room temperature 28 ° C., humidity 73% room temperature, humid air was sucked by the circulation fan 2 and passed through the heat exchanger 3 to exchange heat with the regenerated air. As a result, the humidity of the air dropped to 50% and the temperature rose to 34 ° C. The air that passed through the dehumidifying section of the suction rotor 4 changed to a temperature of 37 ° C. and a humidity of 43%, but merged with the air that did not pass through the dehumidifying section,
Heat exchange with the high temperature part of the regenerative heater case 5, temperature of 45 ° C,
High-temperature dry air with a humidity of 26% was blown out of the housing 1. In this example, the air temperature at the inlet rises from 28 ° C. to 45 ° C. at the outlet, successfully reducing the relative humidity from 73% to 26%.

In a comparative example in which the same dehumidifying dryer does not exchange heat between the high-temperature portion of the regenerative heater case and the air passing through the dehumidifying portion of the suction rotor, the air temperature at the outlet is 38.
° C and humidity 40%. This result also shows that the heat exchange between the high-temperature portion of the regenerative heater case and the air before blowing is effective for producing high-temperature dry air. The blowing of such high-temperature dry air is effective to accelerate drying of wet clothes.

[Brief description of the drawings]

FIG. 1 is a perspective view of an example of a dehumidifying dryer according to the present invention.

FIG. 2 is a partially broken perspective view showing an example of a heat exchanger.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Housing 2 Circulation fan 3 Heat exchanger 4 Adsorption rotor 5 Regeneration heater case 18 Regeneration heater 19 Regeneration fan

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Hitoshi Tauchi 2-1-1 Asahicho, Kariya-shi, Aichi F-term in Aisin Seiki Co., Ltd. 3L053 BC03 BC08 4D052 AA10 CB00 DA02 DA06 HA01 HA03 HB02

Claims (2)

[Claims] 1. A circulation fan for sucking air to be dehumidified, a heat exchanger for passing the suction air, an adsorption rotor for dehumidifying at least a part of the suction air passing through the heat exchanger, an interior of the heat exchanger and an adsorption rotor A regeneration air circulation circuit that passes through the regeneration section, a fan and a regeneration heater disposed in the regeneration air circulation circuit, and a regeneration heater case that houses the regeneration heater is disposed in the dehumidifying air passage that is blown out. Characteristic dehumidifying dryer. 2. The dehumidifying dryer according to claim 1, wherein the temperature of the suction air passing through the adsorption rotor and / or the heat exchanger is further increased by the regeneration heater case.