JP2005315545A - Air conditioner - Google Patents

Abstract

An object of the present invention is to provide an air conditioner capable of dehumidifying while ventilating even when the outside air is extremely high by enabling switching between a total heat exchange mode and a circulating dehumidification mode. is there.
In order to solve the above problems, the present invention provides a total heat exchange ventilation mode in which a first passage 7 is a passage for taking outside air into a room and a second passage 8 is a passage for releasing indoor air to the atmosphere. The first passage 7 is provided with a heater 9 and the heated air is passed through the moisture exchange rotor to release it into the atmosphere, and the second passage is passed through the moisture exchange rotor and returned to the room again. Thus, the total heat exchange mode and the circulation dehumidification mode can be operated alternately.
[Selection] Figure 1

Description

  The present invention relates to an air conditioner that mainly performs humidity adjustment, and particularly provides an air conditioner that is inexpensive and can be used throughout the four seasons.

  A general air conditioner performs cooling and heating using a refrigerator, and dehumidification is performed by dew condensation by cooling air. For this reason, dehumidification is difficult when the temperature is low to some extent.

  Because of these problems, dehumidifiers that dehumidify using silica gel and zeolite adsorbents have been developed, and can be used in combination with air conditioners that use refrigerators to create air of a desired humidity and obtain a comfortable environment. Can now.

The air conditioner using such a moisture adsorbent is generally used as a dehumidifying device, but in some cases, development of a device that can be used as a humidifying device that supplies atmospheric moisture to the room is required. It has been. An example of such a technique is disclosed in Patent Document 1.
Japanese Patent Application Publication No. 346253

  In the one disclosed in Patent Document 1, two heaters are combined with a dehumidification rotor carrying a moisture adsorbent so that when one heater is operated, the dehumidifying operation is performed, and when the other heater is operated, the humidifying operation is performed. Is.

  In recent highly airtight houses, ventilation of a predetermined amount or more is necessary, and as disclosed in Patent Document 1, the outside air is dehumidified and supplied to the room, or the outside air is humidified and supplied to the room. is important.

  However, the thing of patent document 1 has the problem that the humidity of the dehumidified outdoor air may become high rather than the humidity of indoor air, when humidity is very high like the rainy season. That is, when the absolute humidity of indoor air or outside air is extremely high, such as during the rainy season, the effect of dehumidification by the refrigerator is high. On the other hand, when dehumidification is performed using an adsorbent, dehumidification is possible even when the temperature is low, but the dehumidification amount at high humidity is often in a refrigeration system.

  Therefore, when the humidity is particularly high, the humidity of the air that has passed through the dehumidification rotor may be higher than the indoor humidity even if the outside air is dehumidified by the dehumidification rotor. In such a state, when the outside air is dehumidified by the dehumidifying rotor and supplied to the room, the room air can be ventilated by the dehumidified air, but there is a problem that the humidity of the room air gradually increases.

  The present invention is intended to provide an air conditioner that can perform a dehumidifying operation according to the conditions of the outside air, can provide a comfortable space by combining with an air conditioner using a refrigerator, and can also ventilate. is there.

  In order to solve the above-described problems, the present invention has two air passages, one of the two air passages is a passage for taking outside air into the room, and the other is a passage for releasing indoor air to the atmosphere. One of the two air passages has a dehumidification mode in which one of the two air passages heats the outside air and passes it through the moisture exchange rotor to release it to the atmosphere, and the other has a dehumidification mode in which the room air passes through the moisture exchange rotor and returns to the room again. did.

  Since the air conditioner of the present invention is configured as described above, when the humidity of the outside air is extremely high, dehumidification is performed while circulating the room air, and the outside air is dehumidified and supplied to the room as needed for ventilation. it can. Further, it is possible to provide an air conditioner capable of changing the switching timing between the circulation dehumidifying operation and the ventilation dehumidifying operation according to the outside air condition or the indoor condition.

  The invention according to claim 1 of the present invention has a moisture exchange rotor for exchanging moisture and heat between two air passages, one of the two air passages being a passage for taking outside air into the room and the other being a room. A total heat exchange ventilation mode serving as a passage through which air is released to the atmosphere, a humidification mode in which humidified air is introduced and humidified by passing the outside air heated by slowing the rotation speed of the rotor through the moisture exchange rotor, and the above-mentioned 2 One of the two air passages has a dehumidification mode in which the outside air is heated and passed through the moisture exchange rotor to be released to the atmosphere, and the other has a dehumidification mode in which room air is passed through the moisture exchange rotor and returned to the room again. When ventilation is necessary during cooling and heating, total heat ventilation can be performed. When humidification is necessary, humidification is achieved, and when dehumidification is necessary, dehumidification can be achieved.

  Embodiments of the air conditioner of the present invention will be described in detail below with reference to the drawings. 1 to 4 show Embodiment 1 of the present invention. The dehumidification rotor 1 is formed by forming a heat-resistant paper such as ceramic paper in a honeycomb (honeycomb) shape and supporting a moisture adsorbent such as zeolite or silica gel.

  As shown in FIG. 2, the dehumidifying rotor 1 is provided on a rotary damper 2 and is rotated by a rotor-driven geared motor 3 at a rotational speed of about 0.3 to 1 rotation / minute. The rotary damper 2 has partition plates 4 and 5 orthogonal to each other, and the partition plate 5 is provided with a round hole slightly larger than the dehumidifying rotor 1. A dehumidifying rotor 1 is inserted into the round hole. The rotary damper 2 is rotated 90 degrees in the forward and reverse directions by the damper rotating geared motor 6 with the dehumidifying rotor 1 and the rotor driving geared motor 3 mounted thereon.

  As shown in FIGS. 1 and 4, the dehumidifying air conditioner has a first air passage 7 and a second air passage 8 that are parallel to each other. A heater 9 is provided in the first air passage 7.

  Further, as shown in FIG. 1, the rotary damper 2 has a state in which the partition plate 4 is in parallel with the first passage 7 and the second air passage 8, and as shown in FIG. There are two modes: a state perpendicular to the second air passage 8. The former, that is, the state of FIG. 1 is the total heat exchange mode or the humidifying mode, and the latter, that is, the state of FIG. 4 is the dehumidifying mode.

  As shown in FIG. 3, a relay 11, a rotational speed control circuit 12, and a rotational direction control circuit 13 are connected to the timer 10, the heater 9 is connected to the timer 10, and the rotor-driven geared motor 3 is connected to the rotational speed control circuit 12. A damper rotation geared motor 6 is connected to the rotation direction control circuit 13.

  For this reason, the relay 11 opens and closes every predetermined time determined by the timer 10, and energization of the heater 9 is turned on and off every predetermined time. Similarly, the rotation speed control circuit 12 switches the speed of the rotor driving geared motor 3 every predetermined time by the timer 10, and the rotation direction control circuit 13 rotates the damper rotating geared motor 6 to switch the direction of the rotary damper 2.

  First, the total heat exchange mode of FIG. 1 will be described. In this mode, the heater 9 is not energized, and the timer 10 does not operate in this mode alone operation. In the rotary damper 2, the partition plate 4 is parallel to the first air passage 7 and the second air passage 8 as shown in FIG. 1. The moisture exchange rotor 1 is in a high-speed rotation state.

  In the summer season, the outside air OA becomes dry low-temperature air by the moisture exchange rotor 1 and is supplied into the room as product air SA, and the return air RA from the room becomes humid high-temperature air by the humidity exchange rotor 1 and serves as the exhaust EA. Is released.

  In the winter, on the other hand, the outside air OA is humidified and hot air by the moisture exchange rotor 1 and supplied as product air SA into the room, and the return air RA from the room is dried by the moisture exchange rotor 1 as dry low temperature air as exhaust EA. Released into the atmosphere.

  Here, when the moisture exchange rotor 1 is rotated at a low speed and the heater 9 is energized, the humidification mode is set. That is, the outside air OA is heated by the heater 9, desorbs the moisture adsorbed by the moisture exchange rotor 1, becomes hot and humid air, and is supplied into the room as product air SA. When the return air RA from the room passes through the moisture exchange rotor 1, it gives moisture to the moisture exchange rotor 1, becomes dry air, and is discharged to the atmosphere as exhaust EA.

  Next, the circulation dehumidification mode of FIG. 4 will be described. This mode is suitable for use in particularly humid conditions such as during the rainy season. The rotary damper 2 is rotated 90 degrees from the state shown in FIG. 4, that is, the state shown in FIG. 1, by the geared motor 6 for rotating the damper. In this state, the heater 9 is energized.

  Then, the outside air OA is heated, the moisture adsorbed by the moisture exchange rotor 1 is desorbed, and the hot and humid air is discharged into the atmosphere as exhaust EA. On the other hand, when the return air RA from the room passes through the moisture exchange rotor 1, the moisture is adsorbed to become dry air, and is supplied to the room as product air SA.

  If the humidity of the outside air is extremely high in the summer, the total heat exchange mode cannot sufficiently prevent moisture from entering the room, and if the latent heat load of the cooling device increases, the total heat exchange mode The circulation dehumidification mode is operated alternately. That is, when the timer 10 shown in FIG. 3 is operated and the total heat exchange mode and the circulation dehumidifying mode are alternately operated for the time set by the timer 10, ventilation and dehumidification can be performed appropriately.

  In the first embodiment, an example is shown in which an electric heater is used as the heater 9, but a hot water heater is used as the heater 9 in order to reduce energy consumption, and hot water generated from a generator or a fuel cell is circulated through the hot water heater. An air conditioner that heats the air passing there is desired.

  5 to 7 are invented from the above viewpoint and show Embodiment 2 of the present invention. Here, the same constituent members as those in the first embodiment are given the same numbers, and redundant description is omitted. Reference numeral 14 denotes a hot water coil, and hot water from a generator or a fuel cell is supplied to the hot water coil 14. Reference numeral 15 denotes a switching valve that switches whether the outside air OA is supplied to the moisture exchange rotor 1 through the hot water coil 14 or whether the outside air OA is directly supplied to the moisture exchange rotor 1.

  Since the hot water coil 14 generally has a larger heat capacity than an electric heater, in the second embodiment, the hot water coil 14 is installed outside the first passage 7. FIG. 5 shows a total heat exchange mode. In this mode, the state of the switching valve 15 is such that the outside air OA is directly supplied to the moisture exchange rotor 1. Since this state is substantially the same as the state of FIG. 1 of the first embodiment, a duplicate description is omitted.

  FIG. 6 shows a humidification mode in winter. In this mode, the state of the switching valve 15 is such that the outside air OA is supplied to the moisture exchange rotor 1 through the hot water coil 14. In this mode, the moisture exchange rotor 1 is rotated at a low speed as in the first embodiment.

  That is, the outside air OA is heated by the hot water coil 14, desorbs the moisture adsorbed by the moisture exchange rotor 1, and becomes hot and humid air, which is supplied into the room as product air SA. When the return air RA from the room passes through the moisture exchange rotor 1, it gives moisture to the moisture exchange rotor 1, becomes dry air, and is discharged to the atmosphere as exhaust EA.

  FIG. 7 shows the circulation dehumidification mode. Also in this mode, the moisture exchange rotor 1 is rotated at a low speed as in the first embodiment. Further, the rotary damper 2 is turned 90 degrees from the state shown in FIG. 7, that is, the state shown in FIG. 5, by the geared motor 6 for rotating the damper.

  Then, the outside air OA is heated by the hot water coil 14, the moisture adsorbed by the moisture exchange rotor 1 is desorbed, and the hot and humid air is discharged into the atmosphere as exhaust EA. On the other hand, when the return air RA from the room passes through the moisture exchange rotor 1, the moisture is adsorbed to become dry air, and is supplied to the room as product air SA.

  If the humidity of the outside air is extremely high in the summer, the total heat exchange mode cannot sufficiently prevent moisture from entering the room, and if the latent heat load of the cooling device increases, the total heat exchange mode The circulation dehumidification mode is operated alternately. That is, when the timer 10 shown in FIG. 3 is operated and the total heat exchange mode and the circulation dehumidifying mode are alternately operated for the time set by the timer 10, ventilation and dehumidification can be performed appropriately.

  Next, Embodiment 3 shown in FIGS. 8 to 10 will be described. Here again, the same components as those in the first and second embodiments are given the same reference numerals, and duplicate descriptions are omitted.

  16 is a first switching valve, and 17 is a second switching valve. Whether the first switching valve 16 allows the outside air OA to be supplied to the moisture exchange rotor 1 through the first hot water coil 18 or whether the return air RA from the room is directly supplied to the moisture exchange rotor 1. It is to switch. Whether the second switching valve 17 allows the return air RA from the room to be supplied to the moisture exchange rotor 1 through the second hot water coil 19 or whether the outside air OA is directly supplied to the moisture exchange rotor 1. It is to switch.

  Here, both the first hot water coil 18 and the second hot water coil 19 are supplied with hot exhaust water from the generator and the fuel cell. Since both the first hot water coil 18 and the second hot water coil 19 generally have a larger heat capacity than an electric heater, the third hot water coil 18 is also disposed outside the first passage 7 in the third embodiment. Is installed outside the second passage 8

  FIG. 8 shows the total heat exchange mode. In this mode, the state of the first switching valve 16 is such that the return air RA is directly supplied to the moisture exchange rotor 1, and the state of the second switching valve 17 is that the outside air OA is directly It is supplied to the moisture exchange rotor 1. Since this state is substantially the same as the state of FIG. 1 of the first embodiment, a duplicate description is omitted.

  FIG. 9 shows the humidification mode in winter. In this mode, the state of the first switching valve 16 is such that the outside air OA is supplied to the moisture exchange rotor 1 through the first hot water coil 18, but the hot water supply to the first hot water coil 18 is stopped. .

  The state of the second switching valve 17 is such that the indoor return air RA is supplied to the moisture exchange rotor 1 through the second hot water coil 19, and hot water is supplied to the second hot water coil 19 at this time. .

  In this humidification mode, the moisture exchange rotor 1 is rotated at a low speed as in the first embodiment. That is, the indoor return air RA is heated by the second hot water coil 19, desorbs the moisture adsorbed by the moisture exchange rotor 1, becomes hot and humid air, and is supplied into the room as product air SA.

  The outside air OA passes through the first hot water coil 18, but since the hot water is not supplied here, the temperature does not rise and passes through the moisture exchange rotor 1. At this time, the outside air OA gives moisture to the moisture exchange rotor 1, becomes dry air, and is discharged to the atmosphere as exhaust EA.

  Next, FIG. 10 shows a circulation dehumidification mode in summer. In this mode, the state of the first switching valve 16 is such that outside air OA is supplied to the moisture exchange rotor 1 through the first hot water coil 18, but hot water is supplied to the first hot water coil 18.

  The state of the second switching valve 17 is such that the indoor return air RA is supplied to the moisture exchange rotor 1 through the second hot water coil 19, and at this time, the supply of hot water to the second hot water coil 19 is stopped. Yes. In this circulation dehumidification mode, the moisture exchange rotor 1 is rotated at a low speed as in the first embodiment.

  Then, the temperature of the return air RA does not change when passing through the second hot water coil 19, and the moisture is deprived by passing through the moisture exchange rotor 1, returning to the room again as dry air. The outside air OA rises in temperature through the second hot water coil 19 and desorbs the moisture adsorbed on the moisture exchange rotor 1.

  When the humidity of the outside air is extremely high, such as during the rainy season, the room air is dehumidified by alternately operating this circulation dehumidification mode and the above total heat exchange mode, and an air conditioner with a refrigerator is used. The latent heat load can be reduced.

  The present invention provides an air conditioner capable of dehumidification while ventilating even when the humidity of the outside air is extremely high by enabling switching between the total heat exchange mode and the circulation dehumidification mode.

It is sectional drawing which shows Example 1 of the air conditioner of this invention. It is a fragmentary perspective view which shows the Example of the air conditioner of this invention. It is a block circuit diagram which shows Example 1 of the air conditioner of this invention. It is sectional drawing which shows Example 1 of the air conditioner of this invention. It is sectional drawing which shows Example 2 of the air conditioner of this invention. It is sectional drawing which shows Example 2 of the air conditioner of this invention. It is sectional drawing which shows Example 2 of the air conditioner of this invention. It is sectional drawing which shows Example 3 of the air conditioner of this invention. It is sectional drawing which shows Example 3 of the air conditioner of this invention. It is sectional drawing which shows Example 3 of the air conditioner of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Moisture exchange rotor 2 Rotary damper 3 Geared motor 4 for rotor drive 4, 5 Plate 6 Geared motor 7 for damper rotation 7 Air passage 8 Air passage 9 Heater 10 Timer 11 Relay 12 Rotational speed control circuit 13 Rotation direction control circuit 14 Hot water coil 15 Switching valve 16 1st switching valve 17 2nd switching valve 18 1st warm water coil 19 2nd warm water coil EA Exhaust
OA Outside air RA Return air SA Product air

Claims (6)

Total heat exchange ventilation having a moisture exchange rotor for exchanging moisture and heat between two air passages, one of the two air passages being a passage for taking outside air into the room and the other being a passage for releasing indoor air to the atmosphere One of the two air passages is a passage that heats the outside air and passes it through the moisture exchange rotor and releases it to the atmosphere, and the other is a dehumidification mode in which room air is passed through the moisture exchange rotor and returned to the room again. Air conditioner having. 2. The air conditioner according to claim 1, wherein the outside air is heated in the total heat exchange ventilation mode, passed through the moisture exchange rotor and taken into the room, and the air taken into the room is humidified. Rotation having a first state in which the outside air is supplied into the room and the room air is released into the atmosphere, and a second state in which the outside air is released into the atmosphere again and the room air is returned to the room again. The air conditioner according to claim 1, further comprising a type damper, wherein the rotary damper is provided with a moisture exchange rotor. 2. The air conditioner according to claim 1, further comprising a switching valve for switching between sending outside air through the heater and passing through the moisture exchange rotor to the room or sending outside air directly through the moisture exchange rotor to the room. A first switching valve that switches between sending outside air to the room through the moisture exchange rotor or returning room air to the room again through the moisture exchange rotor, and releasing air from the room through the moisture exchange rotor to the atmosphere or humidity from the room The air conditioner according to claim 1, further comprising: a second switching valve that switches the air back to the room through the replacement rotor. The air conditioner according to claim 2, wherein when the outside air is heated, the number of rotations of the moisture exchange rotor is less than when the outside air is not heated.

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