JP5241693B2 - Desiccant system - Google Patents

Description

The present invention relates to de-sheet Kant system which attained high efficiency of size and moisture absorption and desorption of device.

  Conventionally, as shown in FIG. 14, one side duct 51 and the other side duct 52 are formed independently in order to supply outside air and exhaust indoor air in parallel, and the one side duct 51 and the other side are formed. At the site where the side duct 52 is in close proximity, the rotary desiccant rotor 53 that spans between the two ducts and contains the adsorbent in the casing to which the two ducts are connected, and the heat storage body in the casing to which the two ducts are connected. A desiccant system 50 having a built-in rotary sensible heat rotor 54 is known. Each of the desiccant rotor 53 and the sensible heat rotor 54 is rotatably supported at the center by a rotating shaft provided along the duct direction, and air flowing through each duct flows into the rotor from the end face side and flows into each rotor. It passes through in the thickness direction. In the desiccant system 50, for example, in summer operation, in the air supply path of the one side duct 51, hot and humid outside air is supplied to the desiccant rotor 53 and moisture adsorption is performed, and then cooled by the sensible heat rotor 54. In the exhaust path of the other duct 52, the indoor air is heated by the sensible heat rotor 54, dehydrated by the desiccant rotor 53, and then exhausted to the outside.

  Further, in Patent Document 1 below, the following disadvantages with respect to the desiccant system 50 are as follows: (1) The desiccant rotor 53 is arranged in a vertical shape, and the desiccant rotor 53 is relatively large. 50 is large in the vertical direction. (2) Therefore, the desiccant system 50 cannot be thinned, and cannot be installed in a narrow place such as the ceiling of a detached house, for example. (3) On the other hand, the desiccant To reduce the size of the air conditioner main body by reducing the rotor 53, the dehumidifying capacity is reduced and sufficient dehumidifying capacity is not ensured. As shown in FIG. There has been proposed a desiccant humidity controller 55 that is rotationally driven while the rotor 53 and the sensible heat rotor 54 are supported in a substantially horizontal posture.

JP 2003-74906 A

  In the desiccant humidity controller 55 described in Patent Document 1, since the desiccant rotor 53 and the sensible heat rotor 54 are placed horizontally, the desiccant rotor 53 and the sensible heat rotor 54 are thinned in the height direction, and the apparatus can be miniaturized. As described above, the air passes in the thickness direction through the end face of the desiccant rotor 53 in the same manner as in the prior art. Therefore, the horizontal air flow supplied to the desiccant humidity controller 55 is changed in the vertical direction when passing through the desiccant rotor. A flow path for returning to the horizontal air flow has to be formed, and problems such as an increase in pressure loss and a complicated structure due to a sudden change in the air flow direction have been problems.

  Further, in the conventional desiccant system, as described above, the desiccant rotor is placed vertically, and air passes in the thickness direction through the end face of the desiccant rotor, so that the desiccant system is enlarged and moisture adsorption by the built-in adsorbent is performed. In order to ensure the performance of the desiccant, the thickness of the desiccant rotor (the length of the adsorption region in the direction of the flow path) exceeds a certain level determined in consideration of the rotational speed, the material characteristics of the adsorbent, the moisture adsorption amount, the regeneration temperature, It was necessary to ensure the thickness.

  Further, in the conventional desiccant system 50, as shown in FIG. 14, the air that has passed through the desiccant rotor 53 is heated by the heat of adsorption accompanying the moisture adsorption of the adsorbent built in the desiccant rotor 53. A sensible heat rotor 54 is provided in the subsequent stage, and it is necessary to reduce the temperature of the air supplied to the room by exchanging sensible heat with the room air.

  Therefore, the main problem of the present invention is to reduce the size of the apparatus by reducing the thickness without increasing the pressure loss and complicating the structure, and to increase the efficiency of moisture adsorption / desorption.

In order to solve the above-mentioned problem, the present invention according to claim 1 is a desiccant system using an annular desiccant rotor having a hollow portion formed therein and having an outer peripheral surface, an inner peripheral surface, an upper surface and a lower surface,
The desiccant rotor has a large number of partition plates coated, impregnated, or bonded with an adsorbent along the radial direction, and has an outer circumferential surface and an inner circumferential surface arranged at intervals in the circumferential direction. A flow path as an outflow inlet is formed, and the hollow portion includes a partition wall that bisects the hollow portion in the diameter direction,
In order to perform the supply of outside air and the exhaust of indoor air in parallel, the desiccant rotor is disposed so as to straddle between both ducts in a portion where the one side duct and the other side duct are close to each other, and the partition wall is defined as the duct direction. Oriented in a parallel direction, supplying outside air from the one side duct via the desiccant rotor to the room, and discharging indoor air from the other side duct via the desiccant rotor, to the desiccant rotor In the desiccant rotor, latent heat is generated on the front side of the one side duct by rotating the one side duct from the indoor side toward the outdoor side and rotating the other side duct from the outdoor side toward the indoor side. Exchange, latent heat exchange and sensible heat exchange are performed on the rear side, and latent heat exchange is performed on the front side in the other duct. Conversion is performed, the desiccant system characterized by latent heat exchange and sensible heat exchange is performed subsequent stage is provided.

The invention according to claim 1 is a desiccant system using the desiccant rotor according to the first embodiment, wherein an annular desiccant rotor having a hollow portion formed therein and having an outer peripheral surface, an inner peripheral surface, an upper surface and a lower surface. Is used . In this desiccant rotor, a large number of partition plates coated, impregnated, or bonded with an adsorbent are along the radial direction, and are arranged over the entire circumference at intervals in the circumferential direction, thereby forming the outer peripheral surface and the inner peripheral surface. A flow path serving as an outflow inlet is formed, and the hollow portion is provided with a partition that bisects the hollow portion in the diameter direction, so that air flowing from the outer peripheral surface is applied, impregnated, or bonded to the partition plate. After the moisture exchange with the adsorbent is performed, it passes through the hollow portion divided into two by the partition wall, and further, the moisture exchange is performed with the adsorbent applied, impregnated or adhered to the partition plate, and the outer periphery on the opposite side Flows out of the face. Since the desiccant rotor can be placed horizontally with respect to the flow path in this way, the desiccant rotor can be reduced in size and the flow path can be changed in a complicated manner even in such a horizontal position. There is no need to increase the pressure loss and the structure becomes complicated.

  In addition, since the flow path having the outer peripheral surface and the inner peripheral surface as the inlet / outlet is formed, the contact length between the circulating air and the adsorbent (the length in the flow direction of the adsorption region) can be increased. As a result, the efficiency of moisture absorption and desorption can be increased.

Further, the present invention according to the first aspect is a desiccant system in the case of the ventilation mode performed concurrently exhaust of outdoor air supply and indoor air. In this case, by orienting the partition wall in a direction parallel to the duct direction, outside air is supplied from the one side duct into the room through the desiccant rotor, and room air is supplied from the other side duct to the desiccant rotor. A flow path that discharges to the outside is formed. Then, as the rotation direction of the desiccant rotor, the desiccant rotor is rotated from the indoor side toward the outdoor side in the one side duct, and is rotated from the outdoor side toward the indoor side in the other side duct. Thus, in the desiccant rotor, latent heat exchange is performed on the front side (outdoor side) in the one side duct, and latent heat exchange and sensible heat exchange are performed on the rear side (room side).

  Specifically, in the air supply duct (one side duct) that supplies the outside air to the room, moisture adsorption (dehumidification of air) to the adsorbent and associated latent heat heating are performed on the upstream side of the desiccant rotor during summer operation. During the winter operation, the adsorbent is desorbed (humidification of air) and the accompanying latent heat cooling is performed. On the downstream side, during the summer operation, the adsorbent is adsorbed with moisture (dehumidification of the air) and exhaust gas, which will be described later. A desiccant rotor cooled by room air on the front side of the duct rotates to the air supply duct side to perform sensible heat cooling, and moisture desorption (humidification of the air) of the adsorbent is performed during winter operation. The desiccant rotor heated by the room air on the front side of the exhaust duct rotates to the air supply duct side to perform sensible heat heating. As a result, the air supplied to the room is adjusted to a state close to the room temperature.

  On the other hand, in the exhaust duct that discharges indoor air to the outside (the other duct), the adsorbent is desorbed (regenerated) during summer operation and the associated latent heat cooling is performed before the desiccant rotor. Moisture adsorption and the accompanying latent heat heating are performed, and the adsorbent is desorbed (regenerated) during the summer operation on the rear stage, and at the same time, the latent heat heating is performed along with the moisture adsorption on the front stage of the air supply duct. The desiccant rotor is rotated to the exhaust duct side for sensible heat heating (cooling of the desiccant rotor), and moisture is adsorbed to the adsorbent during winter operation. The desiccant rotor, which has been latently cooled with desorption, rotates toward the exhaust duct, and sensible heat cooling (heating of the desiccant rotor) is performed.

  In this way, in this desiccant system, sensible heat exchange is performed simultaneously with latent heat exchange on the rear stage side of the desiccant rotor interposed in each duct, so it is necessary to provide a sensible heat rotor separately from the desiccant rotor as in the conventional desiccant system. As a result, the system can be downsized and the efficiency of moisture adsorption and desorption can be increased.

The present invention according to claim 2 is a desiccant system using an annular desiccant rotor having a hollow portion formed therein and having an outer peripheral surface, an inner peripheral surface, an upper surface and a lower surface,
The desiccant rotor has a large number of partition plates coated, impregnated, or bonded with an adsorbent along the radial direction, and has an outer circumferential surface and an inner circumferential surface arranged at intervals in the circumferential direction. A flow path as an outflow inlet is formed, and the hollow portion includes a partition wall that bisects the hollow portion in the diameter direction,
In order to move the humidity from the high-humidity side to the low-humidity side, the desiccant rotor is disposed so as to straddle between the two ducts in a portion where the one-side duct and the other-side duct are close to each other, The high-humidity side air is returned from the one-side duct to the high-humidity side through the other-side duct through the desiccant rotor, and the low-humidity-side air is returned to the other-side duct. From the high-humidity side to the low-humidity side in the one-side duct, and low in the other-side duct. By rotating from the humidity side toward the high humidity side, the desiccant rotor performs moisture adsorption on the high humidity side and moisture desorption on the low humidity side. Desiccant system is provided which is characterized in that.

The invention described in claim 2 is a desiccant system in the humidity exchange mode in which the humidity is transferred from the high humidity side to the low humidity side. Specifically, it is suitably used when drying an object to be dried such as laundry in a drying room or exhausting only moisture while maintaining the temperature in the bathroom in winter. In this case, by orienting the partition wall in a direction orthogonal to the duct direction, air on the high humidity side is returned from the one side duct via the desiccant rotor to the high humidity side through the other side duct, A flow path is formed for returning the low-humidity side air from the other side duct to the low humidity side through the one side duct via the desiccant rotor. Then, as the rotation direction of the desiccant rotor, the one side duct is rotated from the high humidity side to the low humidity side, and the other side duct is rotated from the low humidity side to the high humidity side. Thus, in the desiccant rotor, moisture adsorption is performed on the high humidity side and moisture desorption is performed on the low humidity side, so that only moisture can be moved from the high humidity side to the low humidity side.

As this invention which concerns on Claim 3 , the said partition is enabled to switch an orientation direction every 90 degrees,
Together is 90 ° rotated orientation direction of the partition wall, by reversing the direction of rotation of the desiccant rotor, and characterized by a desiccant system of claim 2 wherein the desiccant system of claim 1, wherein are a switchable A desiccant system is provided.

Invention of the third aspect, together with is 90 ° rotated orientation direction of the partition wall, by reversing the direction of rotation of the desiccant rotor, and ventilation mode according to claim 1, humidity exchange according to claim 2, wherein The mode can be switched.

  As described above, according to the present invention, it is possible to reduce the size of the apparatus by reducing the thickness without increasing the pressure loss and complicating the structure, and to increase the efficiency of moisture adsorption / desorption.

It is a horizontal sectional view of desiccant system 1 (ventilation mode: at the time of summer operation) concerning the 1st form example. It is a horizontal sectional view of desiccant system 1 (ventilation mode: at the time of winter operation) concerning the 1st form example. It is a perspective view of the desiccant rotor 2 which concerns on a 1st form example. FIG. 4 is a partially enlarged perspective view of a desiccant unit 6. It is an air line figure at the time of a summer driving | operation. It is an air line figure at the time of a winter driving | operation. It is a horizontal sectional view of desiccant system 1 (humidity exchange mode). It is an air line figure of FIG. It is a horizontal sectional view of desiccant system 1 (ventilation mode: at the time of summer operation) concerning a reference form example. It is a horizontal sectional view of desiccant system 1 (ventilation mode: at the time of winter operation) concerning a reference form example. It is a perspective view of the desiccant rotor 2 which concerns on a reference form example. It is a longitudinal cross-sectional view of the desiccant rotor 2 which concerns on a reference form example. It is a horizontal sectional view of desiccant system 1 (humidity exchange mode). It is a block diagram of the conventional desiccant system. It is a perspective view of the conventional desiccant humidity controller 55. It is a longitudinal cross-sectional view of the conventional desiccant humidity controller 55.

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

  As shown in FIGS. 1 and 9, the desiccant system 1 according to the present invention includes a desiccant rotor 2 that spans between the ducts 3 and 4 at a portion where the one side duct 3 and the other side duct 4 are close to each other. Is arranged.

Hereinafter, the structure of the desiccant rotor 2 will be described in two embodiments.
[First embodiment]
<Structure of desiccant rotor 2>
As shown in FIG. 3, the desiccant rotor 2 according to the first embodiment is an annular desiccant rotor having a hollow portion 8 formed therein and having an outer peripheral surface 2a, an inner peripheral surface 2b, an upper surface 2c, and a lower surface 2d. .

In this desiccant rotor 2, a large number of partition plates 10, 10... Coated with, impregnated with or adhering to the adsorbent 5 are arranged along the radial direction of the annular portion, and are arranged over the entire circumference at intervals in the circumferential direction. As a result, a channel having the outer peripheral surface 2a and the inner peripheral surface 2b as the outflow inlet is formed, and the hollow portion 8 is provided with a partition wall 7 that bisects the hollow portion 8 in the diameter direction .

  Thus, since this desiccant rotor 2 uses the outer peripheral surface 2a and the inner peripheral surface 2b as the outflow inlet, it can be placed horizontally with respect to the flow path, and the end surface (upper and lower surfaces) like a conventional desiccant rotor. ) Can be made thinner in the height direction than the vertical installation with the outflow inlet, and the apparatus can be downsized. Further, even in the case of such a horizontal installation, there is no need to change the flow path in a complicated manner, and an increase in pressure loss and a complicated structure do not occur.

  Further, since the desiccant rotor 2 is placed horizontally and the outer peripheral surface 2a and the inner peripheral surface 2b are used as outflow inlets, the contact length between the circulating air and the adsorbent 5 (the length in the flow direction of the adsorption region) becomes longer. As a result, the utilization efficiency of the adsorbent is improved and the efficiency of moisture adsorption / desorption can be increased.

  The structure of the desiccant rotor 2 will be described in more detail. The upper surface 2c and the lower surface 2d are formed in a planar shape in which air permeability is blocked at least in the annular portion. A large number of partition plates 10, 10... Extend along the radial direction across the upper and lower surfaces 2c, 2d, and are arranged over the entire circumference at intervals in the circumferential direction. The annular portion is provided with a rotation shaft at the center and is continuously rotated at a predetermined rotation speed by rotation driving of the rotation shaft or rotation driving of a roller in contact with the outer peripheral surface or the upper and lower surfaces.

  When the desiccant rotor 2 is disposed so as to straddle between both ducts in a portion where the one side duct and the other side duct are close to each other, the front stage side (upstream side) and the rear stage side (downstream side) are disposed through the hollow portion 8. Since moisture absorption / desorption regions are formed at two locations, the efficiency of moisture absorption / desorption can be improved.

  The desiccant rotor 2 has a diameter of the outer peripheral surface 2a equal to that of the inner peripheral surface 2b (hollow) in order to secure a predetermined length of contact between the circulating air and the adsorbent 5 (length in the flow direction of the adsorption region). The outer diameter of the portion 8 is 1.3 to 2 times, preferably about 1.5 times.

  As shown in FIG. 4, the partition plate 10 includes a plate-like partition plate 10 a that is disposed at intervals in the circumferential direction along the radial direction with respect to the annular portion of the desiccant rotor 2, and the adjacent flat plate. The corrugated partition plate 10b is disposed between the partition plates 10a and 10a and corrugated into a corrugated, triangular, quadrangular, or polygonal cross-sectional shape. Holes 10c, 10c... Are formed. With such a structure, the contact area with air can be increased with a small pressure loss. The corrugated partition plate 10b may be omitted to form a slit-like communication groove, or the opening 10c may be formed by a general honeycomb structure.

  Since the partition plate 10 is provided radially along the radial direction with respect to the annular desiccant rotor, a large number of openings 10c communicating with the hollow portion 8 are formed on the inner peripheral surface side from the outer peripheral surface side of the desiccant portion 6. The cross-sectional area gradually decreases toward. As a result, the flow velocity of the air passing through the opening 10c gradually increases from the outer peripheral surface side toward the inner peripheral surface side, and conversely decreases gradually from the inner peripheral surface side toward the outer peripheral surface side.

  As the adsorbent 5, conventionally known silica gel, zeolite, polymer sorbent, and the like can be used. Such an adsorbent is powdered and fixed to both surfaces of a base material made of paper or a resin film by adhesion with an adhesive or the like or application or impregnation of a mixture with a binder. The adsorbent 5 may be a filled adsorbent filled between the partition plates 10 instead of being applied, impregnated or adhered to the partition plates. At this time, for example, a hollow filler can be used in combination in order to ensure air permeability. In this case, the outer peripheral surface and inner peripheral surface of the desiccant rotor 2 are closed by a breathable film or net having an opening smaller than the outer dimensions of the dehumidifying material and the filler.

The partition wall 7 is disposed so as to bisect the hollow portion 8 in the diametrical direction with almost no gap with respect to the hollow portion 8, and is made of a material that does not transmit air or moisture. The partition wall 7 is fixedly provided in a predetermined orientation direction with respect to the ducts 3 and 4 even when the annular portion of the desiccant rotor 2 is rotating, and the air flow in the ducts 3 and 4 is fixed in a certain direction. Is controlling. Further, the orientation direction of the partition walls 7 can be switched every 90 ° for switching the operation mode described in detail later.
<Operation mode>
Next, the operation mode of the desiccant system 1 using the above desiccant rotor 2 will be described. The desiccant system 1 can be operated in a ventilation mode in which the supply of outside air and the exhaust of indoor air are performed in parallel, and in a humidity exchange mode in which humidity is transferred from the high humidity side to the low humidity side.

(Ventilation mode)
In the ventilation mode, the supply of outside air and the exhaust of room air are performed in parallel, and the fresh outside air is dehumidified in the summer and humidified and supplied to the room in the winter. The dehumidifying load is reduced, and the humidifying load such as a humidifier can be reduced in winter.

  In this ventilation mode, as shown in FIGS. 1 and 2, the partition wall 7 is oriented in a direction parallel to the duct direction of the ducts 3 and 4, and the outside air is supplied from the one side duct 3 (air supply duct 3). A flow path for supplying indoor air through the desiccant rotor 2 and discharging indoor air from the other duct 4 (exhaust duct 4) to the outside through the desiccant rotor 2 is formed. Then, as the rotation direction of the desiccant rotor 2, the air supply duct 3 rotates in the direction from the indoor side to the outdoor side, and the exhaust duct 4 rotates in the direction to rotate from the outdoor side to the indoor side.

  The operation state of the desiccant system 1 having the above-described configuration will be described separately for a summer operation (FIGS. 1 and 5) and a winter operation (FIGS. 2 and 6), taking a specific air diagram as an example.

  First, the summer operation will be described. As shown in FIGS. 1 and 5, the hot and humid outside air (point a) supplied through the air supply duct 3 passes through the desiccant rotor 2 on the front stage side (outside). After passing, it is introduced into one hollow portion 8a partitioned by the partition wall 7 (point b). Moisture adsorption to the adsorbent (air dehumidification) is performed while passing through the front-side desiccant rotor 6a, and air and constituent members of the front-side desiccant rotor 6a are heated by the latent heat of adsorption accompanying the moisture adsorption. Thereafter, the air in the hollow portion 8a (point b) passes through the rear-stage desiccant rotor 6b located on the rear-stage side (indoor side) of the air supply duct 3, and is then supplied into the room (point c). While passing through the rear-stage desiccant rotor 6b, the desiccant rotor 6c cooled by the front-stage desiccant rotor 6c of the exhaust duct 4 to be described later rotates toward the air supply duct 3 to perform sensible heat exchange. As a result, the air (point c) supplied to the room is cooled to a state close to the room temperature. The aforementioned front-side desiccant rotor 6c of the exhaust duct 4 also functions as a purge region for promoting water adsorption in the rear-side desiccant rotor 6b of the air supply duct 3, and the efficiency of water adsorption in the air supply duct 3 is improved. In addition, the purge area necessary for efficient adsorption with the conventional desiccant rotor can be omitted, and the system can be simplified.

  On the other hand, the relatively low-temperature and low-humidity indoor air (point d) flowing through the exhaust duct 4 passes through the front-side desiccant rotor 6 c of the exhaust duct 4 and is then introduced into the other hollow portion 8 b partitioned by the partition wall 7. (E point). While passing through the front-side desiccant rotor 6c, the room air is humidified (moisture desorption of the adsorbent), and the air and constituent members of the front-side desiccant rotor 6c are cooled by the latent heat of vaporization accompanying the desorption of moisture. . The cooled front-side desiccant rotor 6c serves as a cooling source for the air flowing through the air supply duct 3 as described above by rotating downstream of the air supply duct 3. Thereafter, the air (point e) in the hollow portion 8b passes through the rear-stage desiccant rotor 6d of the exhaust duct 3 and is then exhausted to the outside (point f). While passing through the rear-stage desiccant rotor 6d, sensible heat exchange is performed with the constituent members of the desiccant rotor heated by the front-side desiccant rotor 6a of the air supply duct 3 described above, and the desiccant rotor constituent members are cooled. .

  Next, the air state during winter driving will be described in detail with reference to FIGS. Since the flow path configuration is the same as that in the summer operation, the air state will be described. The low-temperature and low-humidity outside air (point a) is humidified (moisture desorption of the adsorbent) while passing through the front-side desiccant rotor 6a, and the structure of the air and the front-side desiccant rotor 6a by the latent heat of evaporation accompanying this moisture desorption. The member is cooled. Thereafter, while passing through the rear-stage desiccant rotor 6b, it is heated by the front-stage desiccant rotor 6c of the exhaust duct 4, which will be described later, and is subjected to sensible heat by the rotor portion rotated to the air supply duct 3 side, thereby being close to the room temperature. Until it is heated (point c).

  On the other hand, in the exhaust duct 4, the room air is dehumidified (moisture adsorption of the adsorbent) while the room air (point d) passes through the front-side desiccant rotor 6c, and the evaporation heat accompanying the moisture adsorption The air and the constituent members of the front-side desiccant rotor 6c are heated. The heated front-side desiccant rotor 6c rotates to the downstream side of the air supply duct 3, thereby serving as a heating source for air flowing through the air supply duct 3 as described above. Thereafter, dehumidification (moisture adsorption of the adsorbent) is performed while passing through the rear-stage desiccant rotor 6d, and sensible heat cooling is performed.

(Humidity exchange mode)
The humidity exchange mode is intended to move the humidity from the high humidity side to the low humidity side. Specifically, the humidity exchange mode is used when drying an object to be dried such as laundry in a drying room or in winter. It is preferably used for exhausting only moisture while maintaining the temperature in the bathroom, and moisture on the high humidity side is adsorbed to the adsorbent when passing through the desiccant rotor, and at the same time the air heated by the latent heat of adsorption accompanying this is absorbed. By returning to the high humidity side, the object to be dried can be efficiently dried or the temperature in the bathroom can be maintained.

  In the humidity exchange mode, as shown in FIG. 7, by orienting the partition wall 7 in a direction perpendicular to the duct direction of the ducts 3 and 4, the air on the high humidity side passes through the desiccant rotor 2 from the one side duct 3. Thus, a flow path is formed to return the low humidity side air to the high humidity side through the other side duct 4 and return the low humidity side air from the other side duct 4 to the low humidity side through the one side duct 3 via the desiccant rotor 2. To do. The desiccant rotor 2 is rotated in the direction in which the one-side duct 3 rotates from the high-humidity side toward the low-humidity side and the other-side duct 4 rotates in the direction from the low-humidity side toward the high-humidity side. .

  The operation state of the desiccant system 1 having the above configuration will be described using a specific air diagram (FIG. 8) as an example. The high-humidity side air (point a) passes through the one-side duct 3, passes through the first-stage desiccant rotor 6 a located in the one-side duct 3 of the desiccant rotor 2, and then is separated from the high-humidity side partitioned by the partition wall 7. It is introduced into the hollow portion 8a (point b). Moisture adsorption (air dehumidification) is performed on the adsorbent while passing through the front-side desiccant rotor 6a, and air and constituent members of the desiccant rotor 6a are heated by the latent heat of adsorption accompanying the moisture adsorption. Thereafter, the air (point b) in the hollow portion 8a is returned to the high humidity side (point c) after passing through the rear-stage desiccant rotor 6b located in the other duct 4. Moisture adsorption (air dehumidification) is performed on the adsorbent while passing through the latter-stage desiccant rotor 6b.

  On the other hand, the low-humidity side air (point d) passes through the other-side duct 4, passes through the front-side desiccant rotor 6 c located in the other-side duct 4 of the desiccant rotor 2, and is then separated by the partition wall 7. Is introduced into the hollow portion 8b on the side (point e). The adsorbent is desorbed while passing through the front-side desiccant rotor 6c, and the air and the constituent members of the desiccant rotor 6c are cooled by latent heat of vaporization accompanying the desorption of moisture. In addition, this cooled desiccant rotor 6c becomes a cooling source of the above-mentioned high humidity side air by rotating to the high humidity side. Thereafter, the air (point e) in the hollow portion 8b passes through the rear-stage desiccant rotor 6d located in the one-side duct 3 and is then returned to the low humidity side (point f). Moisture desorption of the adsorbent is performed while passing through the latter-stage desiccant rotor 6d.

  The above-described ventilation mode and humidity exchange mode can be easily switched by rotating the orientation direction of the partition wall 90 ° and reversing the rotation direction of the desiccant rotor 2.

[ Reference form example]
<Structure of desiccant rotor 2>
The desiccant rotor 2 which concerns on a reference form example is a cylindrical desiccant rotor which has the outer peripheral surface 2a, the upper surface 2c, and the lower surface 2d, as FIG. 9-12 shows. This desiccant rotor 2 is parallel to the upper and lower surfaces 2c and 2d by fixing a plurality of circular plates 12, 12. A laminar flow path is formed, and a partition wall 13 that bisects the space in the diameter direction is provided in each space between the circular plates 12 and 12.

As described above, also in the desiccant rotor 2 according to the reference embodiment, since the layered flow path is formed on the outer peripheral surface 2a as in the above-described embodiment, the rotor can be disposed horizontally with respect to the flow path. As compared with a conventional desiccant rotor having an end face (upper and lower surfaces) as an outflow inlet, it can be made thinner in the height direction and the apparatus can be downsized. . Further, even in the case of such a horizontal installation, there is no need to change the flow path in a complicated manner, and an increase in pressure loss and a complicated structure do not occur.

  Further, since the desiccant rotor 2 is placed horizontally and the outer peripheral surface 2a is used as the outflow inlet, the contact length between the circulating air and the adsorbent 5 (the length in the flow direction of the adsorption region) becomes longer, and the use of the adsorbent is increased. The efficiency is improved and the efficiency of moisture adsorption / desorption can be increased.

  In particular, in this embodiment, the entire surface of the circular plate 12 can be used as an adsorption / desorption region, so that moisture adsorption / desorption is effectively performed. In addition, a simple structure can reduce production costs and facilitate maintenance.

  The structure of the desiccant rotor 2 will be described in more detail. The desiccant rotor 2 includes a circular plate 12 fixed to the rotary shaft 11 when the rotary shaft 11 is rotationally driven by a driving device such as a rotary motor. 12... Are continuously rotated at a predetermined rotational speed.

  The partition wall 13 includes a fixing frame 13a provided outside the desiccant rotor 2, and a plurality of partitions that are fixed to the fixing frame 13a and bisect each space sandwiched between the circular plates 12 and 12 in the diametrical direction. It is comprised from the partition member 13b, 13b .... The partition wall 13 is fixedly provided in a predetermined orientation direction with respect to the ducts 3 and 4 even when the desiccant rotor 2 is rotated, as in the above-described embodiment. Can be switched every 90 °.

<Operation mode>
Even in the desiccant system 1 according to the present reference embodiment, the ventilation mode and the humidity exchange mode can be operated as in the above embodiment.
(Ventilation mode)
In the ventilation mode, as shown in FIGS. 9 and 10, the partition wall 13 is oriented in a direction parallel to the duct direction of the ducts 3 and 4, and the desiccant rotor 2 is moved from the one side duct 3 (air supply duct 3) to the outside air. A flow path for supplying room air to the room via the other side duct 4 (exhaust duct 4) via the desiccant rotor 2 is formed. Then, as the rotation direction of the desiccant rotor 2, the air supply duct 3 rotates in the direction from the indoor side to the outdoor side, and the exhaust duct 4 rotates in the direction to rotate from the outdoor side to the indoor side.

  As a result, during summer operation, as shown in FIG. 9, the front side (outdoor side) of the desiccant rotor 2 interposed in the air supply duct 3 acts as the front side desiccant rotor 6 a in the above embodiment, and the adsorbent Moisture adsorption and latent heat heating associated therewith are performed, the latter stage side (indoor side) acts as the latter stage desiccant rotor 6b in the above embodiment, and moisture adsorption to the adsorbent (dehumidification of air) is performed at the same time. A desiccant rotor 6c cooled by room air on the upstream side of the exhaust duct 4 to be described later rotates to the air supply duct side to perform sensible heat cooling.

  Of the desiccant rotor 2 interposed in the exhaust duct 4, the front side (inner side) acts as the front side desiccant rotor 6c in the above-described embodiment, and moisture desorption (regeneration) of the adsorbent and associated latent heat cooling are performed. The rear side (outdoor) acts as the rear-side desiccant rotor 6d in the above-described embodiment, and moisture desorption (regeneration) of the adsorbent is performed. At the same time, the front-side desiccant rotor 6a of the air supply duct performs moisture adsorption. Along with this, the latent heat heated desiccant rotor rotates to the exhaust duct side and sensible heat heating (cooling of the desiccant rotor) is performed.

  On the other hand, during winter operation, as shown in FIG. 10, the front side (outdoor side) of the desiccant rotor 2 interposed in the air supply duct 3 acts as the front side desiccant rotor 6 a in the above embodiment, and the adsorbent Moisture desorption (humidification of air) and latent heat cooling associated therewith are performed, and the rear side (indoor side) acts as the rear side desiccant rotor 6b in the above embodiment, and at the same time the air is humidified by moisture desorption of the adsorbent. The desiccant rotor heated by the room air on the upstream side of the exhaust duct 4 to be described later rotates the air supply duct 3 to perform sensible heat heating.

  Of the desiccant rotor 2 interposed in the exhaust duct 4, the front side (inner side) acts as the front side desiccant rotor 6 c in the above embodiment, moisture adsorption to the adsorbent and accompanying latent heat heating are performed, and the rear stage The desiccant in which the side (outdoor) acts as the rear-stage desiccant rotor 6d in the above-described embodiment, and moisture is adsorbed to the adsorbent, and at the same time, is latent-heat-cooled with moisture desorption on the front-stage side of the air supply duct. The rotor 6a rotates toward the exhaust duct and sensible heat cooling (heating of the desiccant rotor) is performed.

  Instead, in the humidity exchange mode, as shown in FIG. 13, by orienting the partition wall 13 in a direction orthogonal to the duct direction of the ducts 3 and 4, air on the high humidity side is transferred from the one side duct 3 to the desiccant rotor 2. The flow path for returning the low humidity side air from the other side duct 4 to the low humidity side via the desiccant rotor 2 and the one side duct 3 while returning to the high humidity side through the other side duct 4 Form. Then, as the rotational direction of the desiccant rotor 2, the one side duct 3 is rotated from the high humidity side to the low humidity side, and the other side duct 4 is rotated from the low humidity side to the high humidity side.

  Thus, moisture adsorption (air dehumidification) is performed on the high humidity side of the desiccant rotor 2, and moisture desorption (air humidification) is performed on the low humidity side.

  DESCRIPTION OF SYMBOLS 1 ... Desiccant system, 2 ... Desiccant rotor, 3 ... One side duct (air supply duct), 4 ... The other side duct (exhaust duct), 5 ... Adsorbent, 6a * 6c ... Pre-stage side desiccant rotor, 6b * 6d ... Later stage Side desiccant rotor, 7.13 ... partition, 8 ... hollow part, 10 ... partition plate, 11 ... rotating shaft, 12 ... circular plate

Claims (3)

A desiccant system using an annular desiccant rotor having a hollow portion formed therein and having an outer peripheral surface, an inner peripheral surface, an upper surface and a lower surface,
The desiccant rotor has a large number of partition plates coated, impregnated, or bonded with an adsorbent along the radial direction, and has an outer circumferential surface and an inner circumferential surface arranged at intervals in the circumferential direction. A flow path as an outflow inlet is formed, and the hollow portion includes a partition wall that bisects the hollow portion in the diameter direction,
In order to perform the supply of outside air and the exhaust of indoor air in parallel, the desiccant rotor is disposed so as to straddle between both ducts in a portion where the one side duct and the other side duct are close to each other, and the partition wall is defined as the duct direction. Oriented in a parallel direction, supplying outside air from the one side duct via the desiccant rotor to the room, and discharging indoor air from the other side duct via the desiccant rotor, to the desiccant rotor In the desiccant rotor, latent heat is generated on the front side of the one side duct by rotating the one side duct from the indoor side toward the outdoor side and rotating the other side duct from the outdoor side toward the indoor side. Exchange, latent heat exchange and sensible heat exchange are performed on the rear side, and latent heat exchange is performed on the front side in the other duct. Conversion is performed, the desiccant system characterized by latent heat exchange and sensible heat exchange takes place at a later stage side. A desiccant system using an annular desiccant rotor having a hollow portion formed therein and having an outer peripheral surface, an inner peripheral surface, an upper surface and a lower surface,
The desiccant rotor has a large number of partition plates coated, impregnated, or bonded with an adsorbent along the radial direction, and has an outer circumferential surface and an inner circumferential surface arranged at intervals in the circumferential direction. A flow path as an outflow inlet is formed, and the hollow portion includes a partition wall that bisects the hollow portion in the diameter direction,
In order to move the humidity from the high-humidity side to the low-humidity side, the desiccant rotor is disposed so as to straddle between the two ducts in a portion where the one-side duct and the other-side duct are close to each other, The high-humidity side air is returned from the one-side duct to the high-humidity side through the other-side duct through the desiccant rotor, and the low-humidity-side air is returned to the other-side duct. From the high-humidity side to the low-humidity side in the one-side duct, and low in the other-side duct. By rotating from the humidity side toward the high humidity side, the desiccant rotor performs moisture adsorption on the high humidity side and moisture desorption on the low humidity side. Desiccant system characterized in that it is. The partition wall can switch the orientation direction every 90 °,
The desiccant system according to claim 1 and the desiccant system according to claim 2 can be switched by rotating the orientation direction of the partition wall by 90 ° and reversing the rotation direction of the desiccant rotor. Desiccant system.

Images