JPH08224431A - Dehumidifier - Google Patents

Abstract

PURPOSE: To reduce the pressure drop making an adsorption filter have such a constitution that granular adsorbents are spread all over in a vessel having a bottom and a cover of a porous plate, and spaces are provided above the cover of the vessel and the granular adsorbents. CONSTITUTION: In an adsorptive filter 10, granular adsorbents such as silica gel or zeolite are spread all over in a vessel whose cover and bottom are constituted of a metal mesh plate, and spaces are provided above the cover of the vessel and the granular adsorbents. In this way, since the granular adsorbents repeat the action of falling without being blown off by wind blown up from the bottom and always move during adsortion/regeneration, clearances are incessantly created between the adsorbents to pass air well while a good contact state between air and the adsorbents is maintained. In the dehumidifier, a fan 3 for taking in fresh air from below, a regeneration heater 2 and the adsorptive filter 10 are connected in order by an air blasting route 4, and an air route switching valve 5 for switching air passed through the adsorptive filter 10 between being discharged outwards and being passed through the heat exchanger 6 is provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dehumidifying device for general household use, which is to be mounted on a device such as a clothes dryer which requires a dehumidifying function.

[0002]

2. Description of the Related Art In recent years, there is a dehumidifying device using a water-adsorbing adsorbent. A conventional dehumidifying device using an adsorbent will be described below.

In FIG. 5, 1 is an adsorption filter in which a granular adsorbent is sandwiched, 2 is a regeneration heater, 3 is a first blower, 4
Is an air passage, 5 is an air passage switching valve, 6 is a heat exchanger, 7 is a second air blower, and 8 is an air passage for cooling air. First from the bottom
The blower 3, the regeneration heater 2, the adsorption filter 1, the air passage switching valve 5, and the air passage 4 are connected to the dehumidifying air suction port of the heat exchanger 6, and the second air blower 7 heats the cooling air passage 8. It is connected to the cooling air suction port of the exchanger 6. 9
Is a drain hole for discharging the condensed water generated in the heat exchanger 6.

The operation of the dehumidifying device constructed as above will be described below. In this type of dehumidifying device, since the adsorption capacity of the adsorption filter 1 is limited, a cycle operation of the adsorption step by the adsorption filter 1 and the regeneration step of the adsorption filter 1 by the air heated at a high temperature by the regeneration heater 2 during the dehumidification operation. It is carried out. In the adsorption step, the air passage switching valve 5 is located on the b side, and the first blower 3 operates to blow indoor air to the adsorption filter 1. Moisture is absorbed from the indoor air by the adsorption filter 1, and it becomes dry air and goes out into the room. In the regeneration process, the air passage switching valve 5 is on the a side, and the regeneration heater 2, the first and second blowers 3 and 7 are operating. The indoor air sucked by the first blower 3 is heated by the regeneration heater 2 to heat the adsorption filter 1, and the moisture released by the adsorption filter 1 is carried out and sent to the dehumidifying air suction port of the heat exchanger 6. The indoor air sent by the second blower 7 is sent to the cooling air suction port of the heat exchanger 6, where it is heat-exchanged and discharged indoors. The dehumidifying air that has removed moisture from the adsorption filter 1 is cooled to a temperature below the dew point and condenses. The condensed water is discharged from the drain hole 9.

[0005]

In order to increase the amount of dehumidification, it is desirable to increase the amount of air blown in the adsorption step so that a large amount of moisture is adsorbed by the adsorption filter in a short time. On the other hand, in the regeneration process, due to the characteristics of the adsorbent, it is necessary to raise the temperature of the adsorption filter to a predetermined temperature or higher to regenerate it. There is a limit to the amount of air that can be heated. Therefore, in the conventional dehumidifier, the amount of air differs between adsorption and regeneration.

Since the conventional adsorbent filter is packed with the granular adsorbent, a large air blower is required because of a large pressure loss at a predetermined air flow during adsorption. Also,
At the time of regeneration, it was necessary to have a means for reducing the air flow rate according to the heating capacity of the regeneration heater.

The present invention solves the above conventional problems. A first object of the present invention is to provide a filter configuration with low pressure loss.

A second object of the present invention is to make the air flowing through the filter uniform. A third object of the present invention is to change the pressure loss of the filter at the time of adsorption and at the time of regeneration so as to easily provide the required air flow rate in each step.

A fourth object of the present invention is to change the pressure loss of the filter at the time of adsorption and regeneration, to easily provide the required air flow rate in each step, and to increase the filter area at the time of adsorption to make it shorter. An object of the present invention is to provide an adsorption filter that adsorbs much moisture in time.

[0010]

The first means for achieving the first object of the present invention is to connect an air blower for taking in outside air from below, a heating means, and an adsorption filter in order by an air passage to adsorb the air. The adsorption filter comprises an air passage switching valve for switching whether the air blown through the filter is discharged to the outside or passed through a heat exchanger, and the adsorption filter includes a granular adsorbent in a container having a bottom and a lid of a porous plate. A space is provided between the cover of the container and the upper part of the granular adsorbent, and when adsorbing, outside air is blown from below by a blower and passed through an adsorption filter before being discharged to the outside. During regeneration, it is heated by a heating means. (EN) A dehumidifying device that blows outside air, passes through an adsorption filter, and then passes through a heat exchanger.

A second object for achieving the second object of the present invention.
The means is to provide a dehumidifying device in which the adsorption filter of the first means is vibratably attached to the air passage via a spring member.

A third aspect for achieving the third object of the present invention
The means is a blower for taking in outside air from below, a heating means, and a plurality of flat plate-shaped adsorption filters are arranged in parallel with their surfaces facing each other and are sequentially connected by an air passage, and the adsorption filters are arranged above and below, and to the left and right respectively. An air passage switching valve is provided.When adsorbing, the left and right air passage switching valves are opened to blow air in parallel with the surface of the adsorption filter, and then discharged to the outside, and during regeneration, the upper and lower air passage switching valves are opened and the surface of the adsorption filter is opened. Another object of the present invention is to provide a dehumidifying device that blows the outside air heated by the heating means perpendicularly to and passes through the heat exchanger.

A fourth object for achieving the fourth object of the present invention.
The means is to provide a dehumidifying device in which the plurality of flat plate-shaped adsorption filters of the third means are arranged in a waveform with one end abutting each other.

[0014]

According to the present invention, the granular adsorbent is spread over the container having the bottom and the lid of the porous plate by the first means, and the space is provided on the lid of the container and the upper part of the granular adsorbent. The adsorbent is constantly blown off by the air blown up from the bottom and drops, so there is a continuous gap between the adsorbents and the air is in good contact with the adsorbents. The passage of is improved. Therefore, it is possible to provide a filter configuration with less pressure loss.

According to the second means of the present invention, since the adsorption filter is attached to the air passage by the spring member so as to be able to vibrate, the container vibrates by the wind and the adsorbent itself moves and is evenly distributed. Therefore, the location where the adsorbent is blown off by the wind is not fixed by the first means, and the wind flowing through the filter can be made uniform.

According to the third means of the present invention, a plurality of adsorption filters are arranged in parallel, and a blower and an air passage are arranged so as to blow indoor air in parallel to the adsorption filters during adsorption and vertically during regeneration. Therefore, the pressure loss at the time of adsorption is small and the pressure loss at the time of regeneration becomes large, and the pressure loss of the filter at the time of adsorption and the pressure loss at the time of regeneration can be changed, and the required air flow in each step can be easily provided.

According to the fourth means of the present invention, one or a plurality of adsorption filters are arranged in a corrugated form, and a blower is provided to blow indoor air in parallel to the corrugated adsorption filter during adsorption and vertically during regeneration. Since the air passage is arranged,
Since the pressure loss of the filter changes during adsorption and regeneration, the required air flow in each process can be easily provided, and the filter area during adsorption increases, so an adsorption filter that adsorbs a large amount of moisture in a shorter time Can be provided.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram of a dehumidifier.
In FIG. 1, the same parts as those in the configuration of the conventional example are designated by the same reference numerals and detailed description thereof will be omitted. Reference numeral 10 denotes an adsorption filter in which a container having a bottom and a lid made of a metal mesh plate is spread with a granular adsorbent such as silica gel or zeolite, and a space is provided above the container lid and the granular adsorbent.

The operation of the dehumidifying device constructed as above will be described. During adsorption / regeneration, the granular adsorbent is constantly blown off from the bottom and blown off, and is constantly moving.Therefore, there is a continuous gap between the adsorbents and good contact between air and adsorbent. The air passage is improved while maintaining.

Next, a second embodiment will be described with reference to the drawings. In FIG. 2, the adsorption filter 10
Is attached to the air passage 4 by a spring member 11 in a vibrating manner.

Next, the operation will be described. Since the adsorption filter 10 is attached to the air passage 4 by the spring member 11 so as to be able to vibrate, the container vibrates by the wind and the adsorbent itself moves and is uniformly distributed. The location where the adsorbent is blown off by the wind is not fixed, and the air flowing through the adsorption filter 10 can be made uniform.

Next, a third embodiment will be described with reference to FIG. In FIG. 3, reference numeral 12 is an adsorption filter in which a granular adsorbent such as silica gel or zeolite is spread in a container whose bottom and lid are made of a metal mesh plate. The two adsorption filters 12 are arranged in parallel vertically, and air passage switching valves 13 and 14 are provided on the left and right, and air passage switching valves 15 and 16 are provided on the upper and lower sides.

Next, the operation will be described. At the time of adsorption, the air passage switching valves 13, 14, 15, 16 are set to the a side, and the second
Operate the blower 7. The indoor air flows in parallel to the adsorption filter 12 from the lateral direction by the second blower 7.
At the time of regeneration, the air passage switching valves 13, 14, 15, 16 are set to b.
To the side, and the first and second blowers 3 and 7 are operated. The indoor air flows vertically from below with respect to the adsorption filter 12 by the first blower 3 and is sent to the heat exchanger 6, and the indoor air flows through the heat exchanger 6 by the second blower 7. Therefore, during adsorption, the air flows in parallel with the two adsorption filters 12, so that the pressure loss is small, and during regeneration, the air flows vertically through the two adsorption filters 12, so that the pressure loss increases. In this embodiment, the air passage is switched to change the direction of the air flowing through the adsorption filter, but the same effect can be obtained by rotating the adsorption filter itself.

Next, a fourth embodiment will be described with reference to FIG. In FIG. 4, the two suction filters 13 are connected to V
It is arranged in a letter shape (waveform).

Next, the operation will be described. At the time of adsorption, the air passage switching valves 13, 14, 15, 16 are set to the a side, and the second blower 7 is operated. Since the second blower 7 blows air against the two adsorption filters 17 in parallel, the passage area becomes two and the pressure loss is reduced.
At the time of regeneration, the air passage switching valves 13, 14, 15, 16 are set to b.
To the side, and the first and second blowers 3 and 7 are operated. The indoor air flows vertically to the adsorption filter 17 from below by the first blower 3 and is sent to the heat exchanger 6, and the indoor air flows into the heat exchanger 6 by the second blower 7. Therefore, at the time of regeneration, air flows vertically through the two V-shaped adsorption filters that are overlapped with each other, resulting in a large pressure loss. In this embodiment, the air passage is switched to change the direction of the air flowing through the adsorption filter, but the same effect can be obtained by rotating the adsorption filter itself.

[0026]

According to the first aspect of the present invention, in the adsorption filter, a granular adsorbent is spread over a container having a bottom and a lid made of a metal mesh plate, and the adsorbent is placed on the lid of the container and the upper part of the granular adsorbent. With a space, the granular adsorbent constantly moves by repeating the operation of being blown off from the bottom and blown off by the wind that blows up from the bottom, so there is a continuous gap between the adsorbents and good air-adsorbent Good air passage while maintaining good contact. Therefore, a filter configuration with less pressure loss can be realized.

According to the second means of the present invention, since the adsorption filter is attached to the air passage by the spring member so that it can vibrate, the container vibrates due to the wind and the adsorbent itself moves and is made uniform. Because of the distribution, the location where the adsorbent is blown away by the wind is not fixed by the first means, and the air flowing through the adsorption filter can be made uniform.

According to the third means of the present invention, the first and second blowers are arranged so that a plurality of adsorption filters are arranged in parallel and the indoor air is blown to the adsorption filters in parallel during adsorption and vertically during regeneration. Since the air flow switching valve is installed, the pressure loss during adsorption is small, and the pressure loss during regeneration is large, and the pressure loss of the filter during adsorption and regeneration can be changed to facilitate the required air flow in each process. Can be realized.

According to the fourth means of the present invention, one or a plurality of adsorption filters are arranged in a corrugated form, and the indoor air is blown in parallel to the corrugated adsorption filter during adsorption and vertically during regeneration. Since the first and second blowers and the air passage switching valve are arranged, the pressure loss of the filter during adsorption and regeneration changes, and it is possible to easily provide the required air flow in each process. Since the filter area of is also large, a lot of moisture can be adsorbed in a shorter time.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing a dehumidifying device according to a first embodiment of the present invention.

FIG. 2 is a configuration diagram showing a dehumidifying device according to a second embodiment of the present invention.

FIG. 3 is a configuration diagram showing a dehumidifying device according to a third embodiment of the present invention.

FIG. 4 is a configuration diagram showing a dehumidifying device according to a fourth embodiment of the present invention.

FIG. 5 is a configuration diagram showing a conventional dehumidifier.

[Explanation of symbols]

 10 Adsorption Filter 11 Spring Member 12 Adsorption Filter 13 Airflow Switching Valve 14 Airflow Switching Valve 15 Airflow Switching Valve 16 Airflow Switching Valve 17 Waveform Adsorption Filter

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Kenji Koshiga 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd.

Claims (4)

[Claims] 1. A wind for sequentially connecting an air blower for taking in outside air from below, a heating means, and an adsorption filter through an air passage to switch whether the air blown through the adsorption filter is discharged to the outside or passed to a heat exchanger. The adsorption filter is provided with a path switching valve, the adsorption filter is spread over a container having a bottom and a lid of a porous plate, and a space is provided between the lid of the container and the upper portion of the granular adsorbent. A dehumidifying device that blows outside air from below and discharges it outside after passing through the adsorption filter, and during regeneration, blows outside air heated by the heating means and passes through the adsorption filter and then through the heat exchanger. 2. The dehumidifying device according to claim 1, wherein the adsorption filter is vibratably attached to the air passage via a spring member. 3. A blower for taking in outside air from below, a heating means, and a plurality of flat plate-like adsorption filters are arranged in parallel with their surfaces facing each other and connected in sequence by an air passage, and the adsorption filters are vertically and horizontally arranged. Each of them is equipped with an air passage switching valve.When adsorbing, the left and right air passage switching valves are opened to blow air in parallel with the surface of the adsorption filter and then discharged to the outside, and during regeneration, the upper and lower air passage switching valves are opened to remove the adsorption filter. A dehumidifying device that blows outside air heated by heating means perpendicular to the surface and passes through a heat exchanger. 4. The dehumidifying device according to claim 3, wherein a plurality of flat plate-shaped adsorption filters are arranged in a waveform with one end abutting each other.