JP2003139350A - Dehumidifying air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a dehumidifying air conditioner capable of changing a mixing rate of an outside air according to the pollution of an indoor air by using a return air from the room inside, an outside air, or the mixed air of the return air and the outside air as a feed air. SOLUTION: This dehumidifying air conditioner is provided with a dehumidifying rotor 2 adsorbing the humidity in the air and a cross flow heat exchange element 7 with two passages, and allows the dehumidified dry air to pass through one passage 8. The air to be fed to the dehumidifying rotor 2 is made to the return air RA from the room, and the air passing through the other passage of the cross flow heat exchange element 7 is made to the outside air OA.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dehumidifying air conditioner for controlling the temperature after dehumidifying outside air or indoor air using silica gel or zeolite.

[0002]

2. Description of the Related Art Since a dehumidifying air conditioner can be driven by heat of about 80 ° C. to 150 ° C., waste heat can be used as a driving energy source, and humidity can be controlled to an appropriate value, which is comfortable and healthy. Since then, it has been attracting attention in recent years.

As a dehumidifying means of such a dehumidifying air conditioner, there are one using a moisture absorbent such as a lithium chloride solution and one using a moisture absorbent such as silica gel or zeolite. Of these, the latter is becoming the mainstream of popularization due to easy maintenance and simple structure of the device.

Further, in a dehumidifying air conditioner using a dehumidifying rotor carrying a moisture adsorbent, it is necessary to lower the temperature raised by the adsorption of moisture by exchanging heat with indoor air. For this reason, a combination of a dehumidifying rotor and a sensible heat exchange rotor has been developed. In the combination of the dehumidifying rotor and the sensible heat exchange rotor, the sensible heat exchange efficiency is not 100% if the sensible heat is simply exchanged between the dry air whose temperature has risen by adsorption and the indoor air. Rises.

For this reason, water is sprayed into the return air from the room to lower the temperature of the return air below the room temperature, and the sensible heat is exchanged between the humid air and the dry air, which have decreased in temperature, for drying. It was designed to generate low-temperature air and supply it to the room. However, this structure has a problem that the air is mixed between the humid air and the dry air, and the air whose humidity has been lowered is humidified.

In order to solve this problem, the applicant himself developed a combination of a dehumidifying rotor and an orthogonal sensible heat exchange element as shown in FIG. The dehumidifying air conditioner shown in FIG. 8 will be described below.

A blower 1 sends atmospheric OA to the adsorption zone 3 of the dehumidifying rotor 2. As a result, the temperature of the air rises due to the heat of adsorption and becomes dry air. Here, the dehumidifying rotor 2 is a honeycomb (honeycomb) -shaped paper carrying a hygroscopic agent such as silica gel or zeolite, and is rotated by a motor (not shown) via a belt (not shown). It is driven.

The air exiting the adsorption zone 3 of the dehumidifying rotor 2 passes through one passage 5 of the first orthogonal sensible heat exchange element 4. Here, the orthogonal sensible heat exchange element is the F-term theme 3
It is as shown in BA02 of L059.

First, the summer mode will be described. The dry air, which has exited the adsorption zone 3 and whose temperature has risen, exchanges heat with the outside air passing through the other passage 6 while passing through one passage 5 of the first orthogonal sensible heat exchange element 4 to lower the temperature. .

The air, which has been dried and has a slightly lowered temperature, passes through one passage 8 of the second orthogonal sensible heat exchange element 7. Cold product air S that has been cooled and dried during this passage
A is supplied indoors.

Return air RA from the room is passed through the other passage 9 of the second orthogonal sensible heat exchange element 7. The spray 10 provided at the inlet of the other passage 9 sprays water into the other passage 9. As a result, while the return air RA passes through the inside of the other passage 9, the water inside the other passage 9 is vaporized and the temperature of the return air RA is lowered.

The return air RA passing through the other passage 9 becomes humid air and is discharged into the outside air by the blower 11. 1
Reference numeral 2 denotes a chamber, to which hot exhaust gas such as boiler exhaust gas and micro gas turbine engine exhaust gas (hereinafter referred to as MGT in the specification and drawings) is sent. The high-temperature exhaust gas passes through the other passage 6 of the first orthogonal sensible heat exchange element 4 in the chamber 12, is mixed with outside air having a high temperature, and enters the desorption zone 13 of the dehumidifying rotor 2. Here, the moisture adsorbed on the dehumidifying rotor 2 is desorbed, and is discharged to the atmosphere as exhaust gas EA by the blower 14.

In the winter mode, the exhaust heat of the exhaust gas of the MGT sent to the chamber 12 is mixed with the return air RA from the room. At this time, the water spray of the spray 10 and the rotation of the dehumidifying rotor 2 are stopped. If necessary, humidifying spray 15
Spray water from.

By doing so, the dehumidifying action of the dehumidifying rotor 2 is stopped, the outside air is humidified by the humidifying spray 15, and is heated while passing through the one passage 8 to become warm and humidified air. Supplied to the room.

Such a dehumidifying air conditioner has a simple structure and is easy to maintain, and since it can perform air conditioning by utilizing the residual heat of exhaust gas, it has features such as a high energy saving effect, and also has a summer mode. In this case, since the humidity of the supply air is low, sweat is easily vaporized, and the body temperature control function of the human body is easily exerted, so that the air conditioning is healthy in which independence neuropathy and the like are less likely to occur.

[0016]

The dehumidifying air conditioner as described above ventilates the entire amount of supply air and is suitable for an environment where indoor air is easily polluted, but there are not many sources of air pollution in the room. If there is not, it is useless to reduce the cooling effect by ventilating the entire supply air.

The present invention is intended to provide a dehumidifying air conditioner capable of circulating the entire amount of supply air or partially circulating the supply air.

[0018]

In order to solve the above problems, the present invention comprises a dehumidifying means for adsorbing moisture in the air and an orthogonal heat exchange element having two flow passages, one and the other. The dehumidified dry air is passed through one flow path, and the air sent to the dehumidifying means is the return air from the room or the mixed air of the return air and the outside air, and the air is passed through the other passage of the orthogonal heat exchange element. Was the outside air or a mixed air of outside air and return air.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION The invention according to claim 1 of the present invention has a dehumidifying means for adsorbing moisture in the air and an orthogonal heat exchange element for exchanging sensible heat between two passages, The dehumidifying means supplies the dried air to the room through one of the passages of the orthogonal heat exchange element, and the air passes through the other passage of the orthogonal heat exchange element to supply water to the other passage of the orthogonal heat exchange element. The air sent to the dehumidifying means is the return air from the room, and the air passing through the other passage of the orthogonal heat exchange element is the outside air.The return air from the room is dehumidified to lower the temperature. It has the effect of being returned to the room again.

[0020]

EXAMPLES Examples 1 to 3 of the dehumidifying air-conditioning system of the present invention will be described in detail below with reference to the drawings. Here, the blower 1, the dehumidifying rotor 2, the adsorption zone 3, the first orthogonal sensible heat exchange element 4, one passage 5, the other passage 6, the second orthogonal sensible heat exchange element 7, one passage 8, the other Passage 9, spray 10,
The blower 11, the chamber 12, the desorption zone 13, the blower 14, and the humidifying spray 15 are the same constituent parts as those of the above-described conventional art, and the same reference numerals are given to avoid duplicate description.

FIG. 1 is a flow chart showing the first embodiment of the present invention. Differences from the conventional device shown in FIG. 8 will be described. In the conventional one, the return air from the room is guided to the other passage 9 of the second orthogonal sensible heat exchange element 7, whereas in the first embodiment, it is guided to the suction side of the blower 1.

In the first embodiment, the outside air is introduced into the other passage 9 of the second orthogonal sensible heat exchange element 7. The other configurations are the same as those of the above-described conventional one and the first embodiment.

The first embodiment of the present invention thus constructed operates as follows in the summer mode. First, the room air is sucked by the blower 1, and the room air is sent to the adsorption zone 3 of the dehumidifying rotor 2 by the discharge of the blower 1. As a result, the temperature of the air rises due to the heat of adsorption and becomes dry air.

The dry air, which has exited the adsorption zone 3 and whose temperature has risen, exchanges heat with the outside air passing through the other passage 6 while passing through one passage 5 of the first orthogonal sensible heat exchange element 4. Is reduced.

The dried and slightly cooled air passes through one passage 8 of the second orthogonal sensible heat exchange element 7. Cold product air S that has been cooled and dried during this passage
A is supplied indoors.

Outside air is passed through the other passage 9 of the second orthogonal sensible heat exchange element 7. The spray 10 provided at the inlet of the other passage 9 sprays water into the other passage 9. As a result, while the outside air passes through the inside of the other passage 9, the water inside the other passage 9 is vaporized and the temperature of the outside air is lowered.

The outside air passing through the other passage 9 becomes humid air and is discharged into the atmosphere by the blower 11. Reference numeral 12 denotes a chamber to which high temperature exhaust gas such as boiler exhaust gas or micro gas turbine engine exhaust gas (hereinafter referred to as MGT in the specification and drawings) is sent. The high-temperature exhaust gas passes through the other passage 6 of the first orthogonal sensible heat exchange element 4 in the chamber 12, is mixed with outside air having a high temperature, and enters the desorption zone 13 of the dehumidifying rotor 2. Here, the moisture adsorbed on the dehumidifying rotor 2 is desorbed, and is discharged to the atmosphere as exhaust gas EA by the blower 14.

In the winter mode, exhaust heat of MGT exhaust or the like sent to the chamber 12 is mixed with the outside air passed through the other passage 9 of the second orthogonal sensible heat exchange element 7. At this time, the water spray of the spray 10 and the rotation of the dehumidifying rotor 2 are stopped. If necessary, water is sprayed from the humidifying spray 15.

By doing so, the dehumidifying action of the dehumidifying rotor 2 is stopped, the return air RA from the room is humidified by the humidifying spray 15, and is heated while passing through one passage 8 to be warm and humid. The air becomes clean and is supplied to the room again.

FIG. 2 is a flow chart showing a second embodiment of the dehumidifying air conditioner of the present invention. Here, the blower 1, the dehumidifying rotor 2, the adsorption zone 3, the first orthogonal sensible heat exchange element 4, one passage 5, the other passage 6, the second orthogonal sensible heat exchange element 7, one passage 8, the other Passage 9, spray 10, blower 1
1, the chamber 12, the desorption zone 13, the blower 14, and the humidifying spray 15 are the same constituent parts as those in the first embodiment, and the same reference numerals are given to avoid duplicate description.

In the second embodiment, compared with the first embodiment, the return air RA from the room is not passed through the suction side of the blower 1, but a part of the return air RA is blown. One is passed through the suction side, and the rest is passed through the other passage 9 of the second orthogonal sensible heat exchange element 7. The outside air is also passed through the other passage 9 and the suction side of the blower 1.

The operation of the second embodiment is basically the same as that of the first embodiment, but the entire amount of the air supplied to the room is not circulated but is supplied by mixing the outside air. Moreover, a part of the air in the room is discharged to the outside. Therefore, when a person is present indoors and carbon dioxide is generated, this embodiment 2
If you use the ones, ventilation is performed appropriately and you can create a comfortable environment.

Further, the second embodiment is a known damper for adjusting the mixing ratio of the return air RA sucked into the blower 1 and the outside air OA according to the indoor conditions, that is, the number of people in the room and the presence or absence of smokers. Etc. are provided, and the mixing ratio can be adjusted accordingly.

Next, a third embodiment of the dehumidifying air conditioner of the present invention will be described. FIG. 3 is a flowchart showing the third embodiment, and FIG.
Is a perspective view thereof, and in FIG. 4, the blower 1, the blower 11 and the blower 14 are omitted.

Here, the blower 1, the dehumidifying rotor 2, the adsorption zone 3, the first orthogonal sensible heat exchange element 4, one passage 5, the other passage 6, the second orthogonal sensible heat exchange element 7, and the one passage 8 are provided. The other passage 9, the spray 10, the blower 11, the chamber 12, the desorption zone 13, the blower 14, and the humidifying spray 15 are the same components as in the first embodiment, and the same reference numerals are given to avoid duplicated explanation. .

The third embodiment differs from the above-described first or second embodiment in the following configuration. That is, the passage partition plate 16 that divides the other passage 9 of the second orthogonal sensible heat exchange element 7 is fixedly provided.

An outside air inlet 17 for introducing outside air is provided on one side of the other divided passage 9. The blower 1 is a double-blade fan type having fans on both sides of one motor, and a fan partition plate 18 is provided between the fans.

Further, a first damper 19 is provided in the pipeline for supplying the outside air to the suction side of the blower 1, and a second damper 20 is provided in the pipeline for guiding the return air RA to the suction side of the blower 1.
Further, a third damper 21 is provided at the outside air introduction port 17, and a fourth damper 22 is provided at a conduit for guiding the return air RA to the other passage 9. Here, each of the dampers 19.20, 21 and 22 has a variable aperture ratio from a closed state to an open state.

When the dampers 19 and 22 are completely closed and the dampers 20 and 21 are used in an open state, the return air from the room R
All of A enters the dehumidifying rotor 2 from the blower 1 and is completely in a circulating state. In addition, each damper 19, 20, 21, 22
When is opened, the air supplied to the room becomes a mixed air of return air and outside air. And each damper 19, 20, 21, 2
By adjusting the opening ratio of 2, the air supplied to the room can adjust the mixing ratio of the return air and the outside air.

Further, a double-blade fan type is used as the blower 1, and a fan partition plate 18 is provided between the respective fans.
When the dampers 19 and 20 are open, the return air RA passes near the start point of the adsorption zone 3 and near the end point of the adsorption zone 3, as shown in FIG. The outside air OA passes through.

This typically results in dry return air RA.
Passes through a portion of the dehumidifying rotor 2 having a high adsorption capacity in the adsorption zone 3, and the outside air OA having a high humidity passes through a portion having a low adsorption capacity in the adsorption zone 3.

That is, it is difficult to further dehumidify low-humidity air unless it is a part of the dehumidifying rotor 2 having a high adsorption capacity, and high-humidity air is dehumidified even in a part of the dehumidification rotor 2 having a low adsorption capacity. be able to. Therefore, a high dehumidifying effect can be obtained.

Further, as shown in FIGS. 3 to 5, the second orthogonal sensible heat exchange element 7 is divided by the passage partition plate 16, and the temperature rises due to the heat of adsorption after passing through the dehumidifying rotor 2. The outside air OA is made to flow on the inflow side of the dry air, and the return air RA from the room is made to flow on the outflow side of the dry air.

That is, during operation in the summer mode, the temperature of the indoor air is lower than that of the outside air, and the temperature of the return air RA is lower than that of the outside air OA. Therefore, the dry air having a high temperature is first cooled by the outside air OA having a temperature higher than that of the return air RA, and the return air RA having a lower temperature is cooled while the temperature of the dry air is lowered.

In the above example, the fan partition plate 18 is fixedly provided, but the fan partition plate 18 may be movable. In other words, when the damper 19 is closed and the entire amount of return air is returned, the partition plate 17 is moved and the return air RA is blower 1
The fan efficiency is better if it is sent by both fans.

In the above example, the passage partition plate 16 is fixedly provided, but the passage partition plate 16 may be movable. That is, when the damper 22 is used in the open state, the passage partition plate 16 is moved to return air RA.
The heat exchange efficiency of the second orthogonal sensible heat exchange element 7 is improved when the heat is passed over the entire area of the other passage 9.

[0047]

Since the dehumidifying air conditioner of the present invention is constructed as described above, the air sent to the dehumidifying means can be returned air from the room, and there is no air pollution source in the room or there is little pollution. In this case, high air conditioning efficiency can be obtained.

In the dehumidifying air conditioner of the present invention, the air sent to the dehumidifying means can be a mixed air of the return air from the room and the outside air, and the air supplied to the room can be returned to the outside air according to the necessity of ventilation. It can be air mixed with air.

Further, in the dehumidifying air conditioner of the present invention, by adjusting the opening degree of the damper, it is possible to adjust the mixing ratio of the outside air and the return air of the air supplied to the room according to the degree of necessity of ventilation. Is.

The dehumidifying air conditioner of the present invention uses a double-blade fan type blower for sending air to the dehumidifying rotor, and is provided with a fan partition plate for preventing mixing of the air discharged from each fan, and the adsorption zone of the dehumidifying rotor. Since the return air from the room is passed near the starting point and the outside air is passed near the end point of the adsorption zone, high dehumidification performance can be exhibited.

Further, according to the present invention, since the passage partition plate of the fan partition plate or either one of them is movable,
A high dehumidifying effect or cooling effect can be obtained even when the supply air is entirely returned.

When the second orthogonal sensible heat exchange element is divided by the passage partition plate, the outside air OA is caused to flow to the inflow side of the dry air which has passed through the dehumidifying rotor and whose temperature has been raised by the heat of adsorption, and the outflow side of the dry air. The return air RA from the room is made to flow.

That is, during the operation in the summer mode, the temperature of the indoor air is lower than that of the outside air, and the temperature of the return air RA is lower than that of the outside air OA. Therefore, the dry air having a high temperature is first cooled by the outside air OA having a temperature higher than that of the return air RA, and is cooled by the return air RA having a lower temperature when the temperature of the dry air is lowered.
The cooling effect of the supply air is enhanced.

[Brief description of drawings]

FIG. 1 is a flow chart showing a first embodiment of a dehumidifying air conditioner of the present invention.

FIG. 2 is a flow chart showing a second embodiment of the dehumidifying air conditioner of the present invention.

FIG. 3 is a flowchart showing a third embodiment of the dehumidifying air-conditioning apparatus of the present invention.

FIG. 4 is a perspective view showing a third embodiment of the dehumidifying air conditioner of the present invention.

FIG. 5 is a plan view showing a main part of a third embodiment of the dehumidifying air-conditioning apparatus of the present invention.

FIG. 6 is a front view showing another main part of Embodiment 3 of the dehumidifying air-conditioning apparatus of the present invention.

FIG. 7 is a perspective view showing still another main part of the third embodiment of the dehumidifying air conditioner of the present invention.

FIG. 8 is a flow diagram of a conventional dehumidifying air conditioner.

[Explanation of symbols]

1 blower 2 dehumidification rotor 3 adsorption zone 4 First orthogonal sensible heat exchange element 5 one passage 6 The other passage 7 Second orthogonal sensible heat exchange element 8 one passage 9 The other passage 10 spray 11 Blower 12 chambers 13 Desorption zone 14 Blower 15 Humidifying spray 16 passage dividers 17 Outside air inlet 18 fan partition 19,20,21,22 damper

Claims (6)

[Claims] 1. A dehumidifying means for adsorbing moisture in air, and an orthogonal heat exchange element for exchanging sensible heat between two passages, wherein air dried by the dehumidifying means is subjected to the orthogonal heat exchange. The air is supplied to the room through one passage of the element, air is passed through the other passage of the orthogonal heat exchange element, and water is sprayed into the other passage of the orthogonal heat exchange element. A dehumidifying air conditioner in which the air sent to the room is return air from the room, and the air passing through the other passage of the orthogonal heat exchange element is the outside air. 2. The dehumidifying air conditioner according to claim 1, wherein the air passing through the other passage of the orthogonal heat exchange element is outside air. 3. The dehumidifying air conditioner according to claim 1, wherein the air sent to the dehumidifying means is a mixture of return air from the room and outside air. 4. The dehumidifying air conditioner according to claim 1, wherein the air passing through the other passage of the orthogonal heat exchange element is a mixture of return air from the room and outside air. 5. The dehumidifying air conditioner according to claim 1, wherein the air sent to the dehumidifying means is a mixture of the return air from the room and the outside air, and the mixing ratio is variable. 6. The dehumidifying air conditioner according to claim 1, wherein the air passing through the other passage of the orthogonal heat exchange element is a mixture of the return air from the room and the outside air, and the mixing ratio is variable.