JP2013228167A - Humidity control device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a humidity control device for carrying out regeneration action in an adsorption heat exchanger, in which a regenerative capacity of the adsorption heat exchanger is increased.SOLUTION: A humidity control device is provided with: a casing (11); an adsorption heat exchanger (33) housed in the casing (11) and having an adsorbent carried on the surface; a heating medium circuit (30) which is connected to the adsorption heat exchanger (33) and through which a heating medium heating the adsorbent of the adsorption heat exchanger (33) flows; and an electrical component (91). An outside air flow path (OC) through which the outside air flows before passing through the adsorption heat exchanger (33) is formed in the casing (11), and a heat conducting member (94) performing heat exchange between the outside air and the electrical component (91) is provided in the outside air flow path (OC).

Description

  The present invention relates to a humidity control apparatus including an adsorption heat exchanger.

  Conventionally, humidity control apparatuses that dehumidify or humidify indoor air are known. As this type of humidity control apparatus, there is one provided with an adsorption heat exchanger on which an adsorbent is supported.

  For example, the humidity control apparatus disclosed in Patent Document 1 is configured as a floor-standing type that is disposed inside a closet or the like. This humidity control apparatus has a substantially rectangular parallelepiped box-shaped casing, and an air flow path is formed inside the casing.

  Specifically, as shown in FIGS. 1 and 2 of the same document, four ducts connected to the room and the outdoors are connected to the upper end of the casing of the humidity control apparatus. In addition, two humidity control chambers that can communicate with the respective chambers at the top of the casing are formed inside the casing. An adsorption heat exchanger carrying an adsorbent is installed in each humidity control chamber. These adsorption heat exchangers are connected to the refrigerant circuit together with the compressor. In the refrigerant circuit, the refrigerant is compressed by a compressor and a refrigeration cycle is performed. Thereby, in a refrigerant circuit, one adsorption heat exchanger serves as a radiator (condenser), and the other adsorption heat exchanger serves as an evaporator.

  This humidity control device dehumidifies and humidifies the room while ventilating the room. Perform dehumidifying and humidifying operations. In the dehumidifying operation, outdoor air passes through the adsorption heat exchanger in the evaporator state. In this adsorption heat exchanger, water vapor in the air is adsorbed by the adsorbent, and the refrigerant evaporates due to the adsorption heat generated at this time. The air thus dehumidified is supplied into the room. On the other hand, room air passes through the adsorption heat exchanger in the state of a condenser. In this adsorption heat exchanger, water vapor is released into the air from the adsorbent heated by the refrigerant. The air used for regeneration of the adsorbent in this way is discharged outside the room.

  Further, in the humidifying operation of the humidity control apparatus, outdoor air passes through the adsorption heat exchanger in a condenser state. In this adsorption heat exchanger, water vapor is released into the air from the adsorbent heated by the refrigerant. The air thus humidified is supplied into the room. On the other hand, outdoor air passes through the adsorption heat exchanger in the evaporator state. In this adsorption heat exchanger, water vapor in the air is adsorbed by the adsorbent, and the refrigerant evaporates due to the adsorption heat generated at this time. Thus, the air which provided the moisture to the adsorbent is discharged outside the room.

JP 2009-92299 A

  In the humidity control apparatus of Patent Document 1, for example, in winter, the temperature of the outside air sent to the adsorption heat exchanger may be extremely low. Under such conditions, the adsorbent cannot be heated to a sufficient regeneration temperature, and the regeneration capacity of the adsorption heat exchanger is reduced. As a result, there arises a problem that in this humidity control apparatus, a sufficient humidifying capacity cannot be obtained.

  This invention is made | formed in view of this point, The objective is to increase the reproduction | regeneration capability of an adsorption heat exchanger in the humidity control apparatus which performs reproduction | regeneration operation | movement with an adsorption heat exchanger.

  The first invention is connected to the casing (11), the adsorption heat exchanger (33) accommodated in the casing (11) and carrying the adsorbent on the surface, and the adsorption heat exchanger (33). A humidity control device including a heat medium circuit (30) through which a heat medium for heating the adsorbent of the adsorption heat exchanger (33) flows and an electrical component (91) is provided, and the casing (11) includes An outside air flow path (OC) through which the outside air before passing through the adsorption heat exchanger (33) flows is formed, and the outside air flow path (OC) is a heat transfer member between the outside air and the electrical component (91). (94) It is configured to exchange heat or to directly exchange heat between the electrical component (91) and outside air.

  In the first invention, the heat medium of the heat medium circuit (30) flows through the adsorption heat exchanger (33), whereby the adsorbent of the adsorption heat exchanger (33) is heated and the adsorbent is regenerated. In the outside air flow path (OC) of the present invention, the air flowing upstream of the adsorption heat exchanger (33) exchanges heat with the electrical component (91) via the heat transfer member (94) or adsorbs. The air flowing upstream of the heat exchanger (33) exchanges heat directly with the electrical component (91). As a result, heat of the electrical component (91) is applied to the outside air, and at the same time, the electrical component (91) is cooled. The air that has exchanged heat with the electrical component (91) indirectly or directly flows through the adsorption heat exchanger (33). This air absorbs heat from the electrical component (91) and is preheated, so that the adsorbent regeneration efficiency of the adsorption heat exchanger (33) is improved.

  According to a second invention, in the first invention, an auxiliary heating part (35) for heating the outside air before heat exchange with the electrical component (91) is provided upstream of the adsorption heat exchanger (33). It is characterized by that.

  In the second invention, in the outside air flow path (OC), the outside air is first heated by the auxiliary heating section (35), and then is further heated by absorbing heat from the electrical component (91). As a result, the regeneration efficiency of the adsorbent of the adsorption heat exchanger (33) is improved.

  According to a third invention, in the first invention, an auxiliary heating section (35) for heating the outside air after heat exchange with the electrical component (91) is provided in the outside air flow path (OC). It is provided in the upstream of a vessel (33).

  In the third invention, in the outside air flow path (OC), the outside air is first heated by absorbing heat from the electrical component (91) and then further heated by the auxiliary heating section (35). As a result, the regeneration efficiency of the adsorbent of the adsorption heat exchanger (33) is improved.

  In a fourth aspect based on any one of the first to third aspects, the outside air flow path (OC) includes the first and second flow paths (63a, 63b) adjacent to each other and the first flow path. A turn channel (TC) having a relay channel (63c) connecting the outflow end of (63a) and the inflow end of the second channel (63b), and the heat transfer member (94) or electrical component ( 91) is disposed in a portion of the side wall of the relay path (63c) facing the outflow end of the first flow path (63a).

  In the fourth invention, the turn channel (TC) is formed in a part of the outside air channel (OC). In the turn channel (TC), the air that has passed through the first channel (63a) changes the direction of the air flow while colliding with the side wall of the relay channel (63c), and the second flow adjacent to the first channel. It flows into the road (63b). On the other hand, the heat transfer member (94) or the electrical component (91) of the present invention is provided in a portion of the side wall of the relay path (63c) facing the first flow path (63a). For this reason, it becomes easy for outside air to hit a heat-transfer member (94) or an electrical component (91), and the heating capability of this outside air improves.

  According to the first invention, the outside air before passing through the adsorption heat exchanger (33) can be heated by the heat of the electrical component (91). As a result, the regeneration efficiency of the adsorbent of the adsorption heat exchanger (33) can be improved, and for example, the humidification ability in winter can be improved.

  Further, when the outside air temperature is extremely low, there is a possibility that the adsorbent of the adsorption heat exchanger (33) and other components (for example, an opening / closing damper) are frozen. However, in the present invention, the problem of freezing can be solved by heating the outside air to 0 ° or more by the heat transfer member (94).

  Furthermore, according to the present invention, since the electrical component (91) can be cooled by the outside air, it is possible to prevent the electrical component from exceeding the endurance temperature.

  According to the second and third inventions, the adsorbent regeneration efficiency of the adsorption heat exchanger (33) can be improved by heating the outside air by the auxiliary heating section (35), and freezing of the adsorbent etc. can be avoided. it can. In particular, in the second invention, since the auxiliary heating part (35) is located upstream of the heat transfer member (94) or the electrical component (91), the temperature difference between the auxiliary heating part (35) and the outside air is relatively large. Become. As a result, the amount of heat transfer in the auxiliary heating unit (35) increases, and the effect of raising the outside air temperature in the auxiliary heating unit (35) is also improved. On the other hand, in the third invention, since the heat transfer member (94) is arranged on the upstream side of the auxiliary heating part (35), the cooling effect of the electrical component (91) can be improved.

  According to the fourth invention, the heat transfer coefficient between the heat transfer member (94) or the electrical component (91) and the outside air can be increased, and the heating capacity of the outside air can be further improved.

FIG. 1 is a perspective view illustrating a casing structure of a humidity control apparatus according to an embodiment. FIG. 2 is a perspective view illustrating a frame structure of the humidity control apparatus according to the embodiment. FIG. 3 is a configuration diagram schematically illustrating the humidity control apparatus according to the embodiment. FIG. 3A is a top view of the humidity control apparatus, and FIG. 3B is an internal structure of the humidity control apparatus. FIG. 3C shows the internal structure of the humidity control apparatus from the left side, and FIG. 3D shows the internal structure of the humidity control apparatus from the right side. FIG. 4 is a configuration diagram schematically illustrating the humidity control apparatus according to the embodiment. FIG. 4A illustrates the internal structure of the humidity control apparatus as viewed from the YY cross section of FIG. FIG. 4B shows the internal structure of the humidity control apparatus as viewed from the ZZ cross section of FIG. FIG. 5 is an assembled perspective view showing the internal structure of the humidity control apparatus according to the embodiment, and particularly shows the internal structure of the lower space. FIG. 6 is an assembled perspective view showing the internal structure of the humidity control apparatus according to the embodiment, and particularly shows the peripheral structure of the reheat heat exchanger. FIG. 7 is an assembled perspective view showing the internal structure of the humidity control apparatus according to the embodiment, and particularly shows the peripheral structure of the lower damper. FIG. 8 is an assembled perspective view showing the internal structure of the humidity control apparatus according to the embodiment, and particularly shows the peripheral structure of the upper damper. FIG. 9 is a perspective view of the adsorption heat exchanger according to the embodiment in which the surrounding humidity control chamber is added using a virtual line. FIG. 10 is a perspective view showing the internal structure of the humidity control apparatus according to the embodiment, and particularly shows the internal structure of the upper space. FIG. 11 is a schematic configuration diagram of a refrigerant circuit of the humidity control apparatus according to the embodiment. FIG. 12 is a diagram corresponding to FIG. 3 illustrating the air flow of the first operation during the dehumidifying operation or the first operation during the humidifying operation of the humidity control apparatus according to the embodiment. FIG. 13 is a diagram corresponding to FIG. 4 illustrating the air flow of the first operation during the dehumidifying operation or the first operation during the humidifying operation of the humidity control apparatus according to the embodiment. FIG. 14 is a diagram corresponding to FIG. 3 illustrating the air flow of the second operation during the dehumidifying operation or the second operation during the humidifying operation of the humidity control apparatus according to the embodiment. FIG. 15 is a diagram corresponding to FIG. 4 illustrating the air flow of the second operation during the dehumidifying operation or the second operation during the humidifying operation of the humidity control apparatus according to the embodiment. FIG. 16 is an assembled perspective view showing the internal structure of the humidity control apparatus according to the embodiment, and particularly shows the internal structure of the machine room. FIG. 17 is an enlarged longitudinal sectional view of the vicinity of the heat sink of the humidity control apparatus according to the embodiment. 18 is a cross-sectional view taken along line XX in FIG. FIG. 19 is a view corresponding to FIG. 17 in a humidity control apparatus according to a modification.

  An embodiment of the present invention will be described. The embodiments described below are essentially preferable examples, and are not intended to limit the scope of the present invention, its application, or its use.

  The humidity control device (10) according to the embodiment of the present invention is a floor-type humidity control device that is installed on the floor surface of the room and adjusts the humidity of the room. The humidity control apparatus (10) is installed, for example, in a storage space of a closet in which clothes and the like are stored.

  The configuration of the humidity control apparatus (10) will be described with reference to the drawings. In the following description, “up”, “down”, “right”, “left”, “front”, and “rear” are indicated in principle by referring to the humidity control apparatus (10) shown in FIG. It is based on the case. 3 and 4 schematically show the humidity control device (10). FIG. 3 (A) shows the upper surface of the humidity control device (10), and FIG. 3 (B) shows the humidity control device. FIG. 3 (C) shows the internal structure on the left side of the humidity control device (10), and FIG. 3 (D) shows the internal structure on the right side of the humidity control device. 4A shows the internal structure of the humidity control apparatus of FIG. 3A as viewed from the YY cross section, and FIG. 4B shows the humidity control apparatus of FIG. 4A. The internal structure is viewed from the ZZ cross section.

<Case structure>
As shown in FIG. 1, the humidity control apparatus (10) includes a vertically long rectangular parallelepiped box-shaped casing (11). The casing (11) includes a rectangular plate-like bottom plate (12) and a top plate (13), and four rectangular plate-like panels (14, 14) corresponding to the four sides of the bottom plate (12) and the top plate (13). 15,16,17). These panels (14,15,16,17) consist of a front panel (14) on the front side, a rear panel (15) on the rear side, a right side panel (16) on the right side, and a left side panel on the left side ( 17). In the casing (11), the bottom plate (12), the top plate (13), the rear panel (15), the right side panel (16), and the left side panel (17) have a casing body (11a ). The front panel (14) is configured to be detachable from the casing body (11a) via a fastening member such as a screw. The casing (11) is installed such that the rear panel (15) is in contact with the indoor wall.

  The front panel (14) includes a lower panel (14a) that covers the lower space (S1) of the casing (11), an upper panel (14b) that covers the upper space (S3) of the casing (11), and a casing (11) And an intermediate panel (14c) covering the intermediate space (S2). Further, a filter maintenance panel (14d) is provided at the lower left corner of the lower panel (14a). In the front panel (14), these panels (14a, 14b, 14c, 14d) are configured to be individually removable.

  Four duct connection ports (18) are attached to the top plate (13). Specifically, the top plate (13) has an air supply connection port (18a) on the front right side, an exhaust connection port (18b) on the rear right side, and an outside air connection port (18c) on the rear left side. The inside air connection port (18d) is provided on the front left side. The air supply connection port (18a) and the indoor air connection port (18d) communicate with the indoor space via the duct, respectively, and the exhaust connection port (18b) and the outdoor air connection port (18c) communicate with the outdoor space via the duct, respectively. Communicate. That is, in the humidity control apparatus (10), the air supply connection port (18a) and the indoor air connection port (18d) connected to the indoor space are arranged in a concentrated manner on the front side of the casing (11), and are connected to the outdoor space. (18b) and the outside air connection port (18c) are collectively arranged on the rear side of the casing (11). Outdoor air (OA) is sucked into the outdoor air connection port (18c), and indoor air (RA) is sucked into the indoor air connection port (18d). Supply air (SA) is blown into the room from the air supply connection port (18a), and exhaust air (EA) is blown out of the room through the exhaust connection port (18b).

<Frame structure>
As shown in FIG. 2, four vertical frames (support members) (21) corresponding to the four corners of the bottom plate (12) are provided inside the casing (11). These vertical frames (21) include a first vertical frame (21a) on the front right side, a second vertical frame (21b) on the rear right side, a third vertical frame (21c) on the rear left side, and a left side on the front side. It is composed of a fourth vertical frame (21d). Each vertical frame (21) extends vertically to a position slightly above the middle portion in the height direction of the casing (11). That is, in the casing (11), there is no vertical frame directly connected to the bottom plate (12) between the top plate (13) and the upper end of each vertical frame (21).

  Four horizontal frames (22) (beam members) extending in the horizontal direction are bridged on top of each vertical frame (21). These horizontal frames (22) include a first horizontal frame (22a) between a first vertical frame (21a) and a second vertical frame (21b), a second vertical frame (21b), and a third vertical frame ( 21c), a second horizontal frame (22b), a third vertical frame (21c), a third horizontal frame (22c) between the fourth vertical frame (21d), and a fourth vertical frame (21d). And a fourth horizontal frame (22d) between the first vertical frame (21a). The second, third, and fourth horizontal frames (22b, 22c, 22d) are connected to the upper ends of the corresponding vertical frames (21). On the other hand, the first horizontal frame (22a) is connected to a portion slightly lower than the upper ends of the first and second vertical frames (21a, 21b).

  Three intermediate frames (23) extending horizontally are provided on the lower side of the horizontal frame (22). The intermediate frame (23) includes a first intermediate frame (23a) formed below the first horizontal frame (22a) and a second intermediate frame formed below the second horizontal frame (22b). (23b) and a third intermediate frame (23c) formed below the third horizontal frame (22c).

  The vertical frame (21), the horizontal frame (22), and the intermediate frame (23) are heavy components that are relatively heavy among the components of the humidity control device (10). ) And the adsorption heat exchanger (33)) act to constitute a support member that supports them.

<Inside space of casing>
As shown in FIG. 2, the inside of the casing (11) includes a lower space (S1) formed on the back side of the lower panel (14a) and an intermediate space (S2) formed on the back side of the intermediate panel (14c). ) And the upper space (S3) formed on the back side of the upper panel (14b).

<Components in the lower space>
As shown in FIGS. 5 and 6, a lower partition member (41) is installed in the lower space (S1) along the left side panel (17). The lower partition member (41) is made of a resin material such as polystyrene. The lower partition member (41) includes a lower partition (41a) that divides the lower space (S1) left and right, and a small-diameter cylindrical portion having a substantially rectangular cross section disposed adjacent to the third vertical frame (21c). 41b) and a large-diameter cylindrical portion (41c) having a substantially rectangular cross section disposed adjacent to the fourth vertical frame (21d). An outside air inflow path (61) is defined inside the small diameter cylindrical portion (41b). A reheat chamber (63) is defined inside the large diameter cylindrical portion (41c). The outside air inflow channel (61) and the reheat chamber (63) communicate with each other through the communication port (62) (see FIG. 6).

  Further, the lower partition member (41) is divided into a main body portion (49) and a drawing member (50). The drawing member (50) is disposed on the back side of the front panel (14). A rectangular opening (50a) is formed between the main body (49) and the drawing member (50) in the lower partition (41a). The heat dissipation unit (92) is inserted through the opening (50a). Details of the heat dissipating unit (92) and its peripheral structure will be described later.

  The reheat chamber (63) is provided with an upper support plate (41d) formed integrally with the lower partition member (41). The upper support plate (41d) is continuous with the left inner wall of the large-diameter cylindrical portion (41c) and is supported in a horizontal state so as to be parallel to the bottom plate (12). In the reheat chamber (63), a lower first outside air flow path (63a) continuous to the communication port (62) is formed below the upper support plate (41d), and a lower first first is formed above the upper support plate (41d). A lower second outside air channel (63b) communicating with the outside air channel (63a) is formed (see FIGS. 3B and 6). As shown in FIG. 6 and the like, the lower first outside air flow path (63a) has an insect filter (26), a pleat filter (27), and a reheat unit (28) in order from the upstream side to the downstream side. Is provided.

  The insect filter (26) is a net-like member that captures insects and relatively large dust in the outdoor air. The pleated filter (27) is an air cleaning filter having finer eyes than the insect filter (26), and traps relatively small dust in the outdoor air. The lower partition member (41) is provided with a maintenance lid (41e) on the back side of the filter maintenance panel (14d) described above (see FIG. 5). The maintenance lid (41e) is configured to freely open and close the maintenance ports of the insect removing filter (26) and the pleat filter (27). That is, when the filter maintenance panel (14d) is removed and then the maintenance lid (41e) is opened, the front ends of the insect filter (26) and the pleat filter (27) are exposed to the outside of the casing body (11a).

  The reheat unit (28) has a frame (29) and a reheat heat exchanger (35) fixed inside the frame (29). The frame (29) includes a side stay (29a) and a frame body (29b) supported by the side stay (29a) so that the inner wall faces obliquely downward. The frame body (29b) has an obliquely inclined opening surface (29c), and the reheat heat exchanger (35) is held along the opening surface (29c). The reheat heat exchanger (35) is disposed on the upstream side of the adsorption heat exchanger (33), and constitutes an auxiliary heating unit that heats outdoor air using a refrigerant.

  As shown in FIG. 5, in the lower space (S1), the machine room (60) is partitioned in a substantially half on the right side (outside of the lower partition member (41)). In the machine room (60), an electrical component box (90) is installed on the back side of the front panel (14). In the electrical component box (90), an inverter board (91) connected to the motor of the compressor (31) is accommodated as an electrical component. In the machine room (60), a compressor (31) and a four-way selector valve (32) are installed on the back side of the electrical component box (90).

<Intermediate space>
In the intermediate space (S2), a first intermediate partition member (43), a second intermediate partition member (44), and a third intermediate partition member (47) are provided in order from the lower side to the upper side. These intermediate partition members (43, 44, 47) are all resin members such as polystyrene molded integrally.

  As shown in FIG. 7, the first intermediate partition member (43) closes the upper open portion of the machine room (60). On the upper surface of the first intermediate partition member (43), a frame portion (43a) protruding in a rectangular shape and a pair of concave grooves (43c, 43c) formed on the left and right outer sides of the frame portion (43a) And are formed. The frame portion (43a) is formed across the first intermediate partition member (43). A water receiving portion (43b) for receiving condensed water generated in the humidity control chamber (66a, 66b) is formed inside the frame portion (43a). The water receiving portion (43b) is formed across the first intermediate partition member (43). The bottom surface of the water receiving portion (43b) is inclined so as to face slightly upward from the horizontal plane. That is, the water accumulated in the water receiving portion (43b) is guided forward along the inclined bottom surface. The concave grooves (43c, 43c) extend in the front-rear direction along the left and right side walls of the frame portion (43a).

  As shown in FIG. 8, the second intermediate partition member (44) is supported by the first intermediate frame (23a) and the second intermediate frame (23b) while being predetermined above the first intermediate partition member (43). Are arranged at intervals. In the second intermediate partition member (44), concave grooves (44a, 44a) extending in the front-rear direction are formed at positions corresponding to the concave grooves (43c, 43c) of the first intermediate partition member (43).

  On the other hand, as shown in FIG. 7, between the first intermediate partition member (43) and the second intermediate partition member (44), there are two lower damper partition plates (45) and one horizontal partition. A plate (46) is formed. The two lower damper partition plates (45) and the one horizontal partition plate (46) are arranged vertically so that the plate thickness directions thereof are horizontal. The two lower damper partition plates (45) are composed of an outside air damper partition plate (45a) and an exhaust damper partition plate (45b).

  The lower part of the outside air damper partition plate (45a) is fitted into the left groove (43c) of the first intermediate partition member (43), and the upper end of the outside air damper partition plate (45a) is the left groove of the second intermediate partition member (44). (44a). The lower end of the exhaust damper partition member (45b) is fitted into the right groove (43c) of the first intermediate partition member (43), and the upper end of the exhaust damper partition member (45b) is the left groove of the second intermediate partition member (44). (44a). The front end of the lower damper partition (45) is located on the back side of the front panel (14). That is, when the front panel (14) is removed, the front end of the lower damper partition (45) is exposed to the outside of the casing body (11a). In a state where the front panel (14) is removed, the lower damper partition plate (45) can be pulled back and forth along the respective concave grooves (43c, 44a).

  As shown in FIGS. 3, 7, and 8, an intermediate outside air flow path (64) communicating with the reheat chamber (63) is formed on the left side of the outside air damper partition plate (45a) so as to extend back and forth. The outside air damper partition plate (45a) is provided with a first damper (D1) on the front side and a second damper (D2) on the rear side. On the right side of the exhaust damper partition plate (45b), an intermediate exhaust passage (65) is formed extending forward and backward. The exhaust damper partition plate (45b) is provided with a third damper (D3) on the front side and a fourth damper (D4) on the rear side.

  As shown in FIG. 7 and FIG. 9, the space between the outside air damper partition plate (45a) and the exhaust damper partition plate (45b) is divided into two humidity control chambers (66) by the horizontal partition plate (46). It has been. In these humidity control chambers (66), the front space forms a first humidity control chamber (66a), and the rear space forms a second humidity control chamber (66b). The first humidity control chamber (66a) is formed at a position corresponding to the first damper (D1) and the third damper (D3), and the second humidity control chamber (66b) is the second damper (D2) and the fourth damper. It is formed at a position corresponding to the damper (D4). The first humidity control chamber (66a) and the second humidity control chamber (66b) are formed over the inside of the second intermediate partition member (44).

  As shown in the figure, the two adsorption heat exchangers (33) are divided into a first adsorption heat exchanger (33a) housed in the first humidity control chamber (66a) and a second humidity control chamber (66b). It is comprised with the 2nd adsorption heat exchanger (33b) accommodated. The adsorption heat exchanger (33) is configured such that an adsorbent is supported on the surface of a cross fin type fin-and-tube heat exchanger body (34).

  The heat exchanger body (34) of the adsorption heat exchanger (33) includes a copper heat transfer tube (34a) and a number of aluminum fins (34b). The heat transfer tube (34a) has a straight tube portion and a U-shaped portion formed alternately and continuously in a meandering shape. The fin (34b) is formed in a vertically long plate shape, and the straight pipe portion of the heat transfer tube (34a) penetrates in the thickness direction. That is, a large number of fins (34b) are arranged in parallel along the axial direction of the straight tube portion of the heat transfer tube (34a).

  The adsorbent is supported on the surfaces of a large number of fins (34b) and heat transfer tubes (34a). At the interface between the adsorbent and air, the moisture in the air is adsorbed to the adsorbent, or the adsorbed moisture is desorbed into the air (the adsorbent is regenerated). As the adsorbent, zeolite, silica gel, activated carbon, an organic polymer material having a hydrophilic functional group, or the like is used. Moreover, as an adsorbent, you may use the material (what is called a sorbent) which has the function not only to adsorb | suck moisture but to absorb moisture.

  The adsorption heat exchanger (33) is held in the storage chamber (67) so that the short sides of the fins (34b) are vertical and the U-shaped portions of the heat transfer tubes (34a) are located on the left and right sides.

  As shown in FIG. 8, the third intermediate partition member (47) is laminated on the upper side of the second intermediate partition member (44). A pair of wide grooves (47a, 47a) wide on the left and right are formed on the upper surface of the third intermediate partition member (47). A pair of upper damper partition plates (48) are fitted in the thickness direction in these wide grooves (47a). These upper damper partition plates (48) are arranged horizontally so that their thickness directions are vertical. The front end portion of the upper damper partition plate (48) is located on the back side of the front panel (14). That is, when the front panel (14) is removed, the front end portion of the upper damper partition (48) is exposed to the outside of the casing body (11a). When the front panel (14) is removed, the upper damper partition plate (48) can be pulled back and forth along the wide grooves (47a).

  The pair of upper damper partition plates (48) includes a left-side internal air damper partition plate (48a) and a right-side air supply damper partition plate (48b). The inside air damper partition plate (48a) is provided with a fifth damper (D5) on the front side and a sixth damper (D6) on the rear side. The supply damper partition plate (48b) is provided with a seventh damper (D7) on the front side and an eighth damper (D8) on the rear side. The fifth damper (D5) and the seventh damper (D7) are formed at positions corresponding to the first humidity control chamber (66a), and the sixth damper (D6) and the eighth damper (D8) are the second humidity control chamber. It is formed at a position corresponding to the chamber (66b).

  At the corners on the right rear side of the second intermediate partition member (44) and the third intermediate partition member (47), laterally long through holes extending in the front-rear direction are formed, and these through holes are continuously connected to the exhaust communication flow. Constructs a road (68).

  An outside air duct portion (53) of the first upper partition member (51) extends vertically in a corner on the left rear side of the intermediate space (S2) (see FIGS. 8 and 10). The lower end of the outside air duct part (53) is continuous with the large-diameter cylindrical part (41c) of the lower partition member (41). In the intermediate space (S2), a spacer member (24) is provided on the front side of the first humidity control chamber (66a). The spacer member (24) is interposed between the first intermediate partition member (43) and the first intermediate frame (23a) so as to ensure a predetermined interval.

<Upper space>
As shown in FIG. 10, a first upper partition member (51), a second upper partition member (54), and a third upper partition member (80) are provided in the upper space (S3). These partition members (51, 54, 80) are all polystyrene resin materials molded integrally. In the upper space (S3), the four upper chambers (19) are partitioned by these partition members (51, 54, 80). These upper chambers (19) consist of a front right-side indoor air supply chamber (19a), a rear right-side outdoor exhaust chamber (19b), a rear left-side outdoor air suction chamber (19c), and a front left-side indoor air suction Chamber (19d). The indoor air supply chamber (19a) communicates with the air supply connection port (18a), the outdoor exhaust chamber (19b) communicates with the exhaust connection port (18b), and the outdoor air suction chamber (19c) communicates with the external air connection port (18c). The room air suction chamber (19d) communicates with the room air connection port (18d). An air supply fan unit (84) is provided in the indoor air supply chamber (19a), and an exhaust fan unit (87) is provided in the outdoor exhaust chamber (19b).

  The first upper partition member (51) is provided on the left side of the upper space (S3). The first upper partition member (51) extends along the left side wall (52) formed across the front and rear ends of the casing (11) along the left side panel (17), and along the third vertical frame (21c). A cylindrical outside air duct portion (53) extending vertically. The outside air duct part (53) is arranged in the upper space (S3) and continues from the lower end of the large diameter duct part (53a) and the large diameter duct part (53a) that divides the outside air suction chamber (19c) inside. And a small-diameter duct portion (53b) that is disposed in the intermediate space (S2) and has a smaller diameter than the large-diameter duct portion (53a).

  In the upper space (S3), an outside air suction chamber (19c) is formed inside the large diameter duct portion (53a), and an inside air suction chamber (19d) is formed outside the large diameter duct portion (53a). In the upper space (S3), the upper inside air flow path (69) is partitioned from the outer lower side of the large diameter duct portion (53a) to the front panel (14). The upper end of the upper inside air channel (69) communicates with the inside air suction chamber (19d). Further, the fifth damper (D5) and the seventh damper (D7) of the internal air damper partition plate (48a) face the upper internal air flow path (69). A duct internal flow path (71) connected to the outside air inflow path (61) is formed inside the small diameter duct portion (53b) (see FIG. 3B).

  The second upper partition member (54) includes a right side wall portion (55) formed across the front and rear ends of the casing (11) along the right side panel (16) of the casing (11), and an upper space (S3). And a rear side wall portion (57) continuous to each rear end portion of the right side wall portion (55) and the central partition portion (56).

  A pedestal (55a) is formed inside the right side wall (55). The pedestal portion (55a) has a longitudinal section formed in an L shape, and extends back and forth from the rear side wall portion (57) to the front panel (14) side. A first installation surface (55c) on which the fan units (84, 87) and the third upper partition member (80) are installed so as to be able to be guided back and forth is formed on the upper end surface of the pedestal portion (55a).

  A columnar first contact portion (55b) extending in the vertical direction is formed at an intermediate portion in the front-rear direction of the right side wall portion (55). The rear end portion of the third upper partition member (80) contacts the front end of the first contact portion (55b). Further, a sealing material (not shown) is formed on the contact surface with respect to the third upper partition member (80) in the first contact portion (55b).

  The central partition (56) includes a vertical first vertical wall (56a), a horizontal wall (56b) bent horizontally from the lower end of the first vertical wall (56a), and a vertical from the right end of the horizontal wall (56b). And a bent second vertical wall (56c). A second installation surface (56d) on which the fan units (84, 87) and the third upper partition member (80) are installed so as to be guided back and forth is formed on the upper end surface of the central partition (56). .

  The central partition (56) divides the outside air suction chamber (19c) and the inside air suction chamber (19d) arranged in the front and rear, and the outdoor exhaust chamber (19b) and the indoor air supply chamber (19a) arranged in the front and rear. In addition, a main partition extending in the front and rear direction of the casing (11) is formed. Since the central partition (56) is formed integrally with the right side wall (55) and the rear side wall (57) along the casing (11), the central partition (56) is independent of other members. You can't just remove it.

  A columnar second abutting portion (56e) extending vertically is formed at an intermediate portion in the front-rear direction of the central partition portion (56). The rear end portion of the third upper partition member (80) contacts the front end of the second contact portion (56e). Further, a sealing material (not shown) is formed on the contact surface with respect to the third upper partition member (80) at the second contact portion (56e).

  In the second upper partition member (54), a corner between the right side wall (55) and the rear side wall (57) and a corner between the central partition (56) and the rear side wall (57). In addition, an insertion part (58) is formed respectively. Reinforcing ribs (75) are inserted through the respective insertion portions (58). The upper end of each reinforcing rib (75) is fixed to the top plate (13) of the casing (11). These reinforcing ribs (75) constitute an attachment member to which the exhaust fan unit (87) is fixed and supported.

  The second upper partition member (54) is integrally formed with a horizontal partition portion (59) below the exhaust fan unit (87) (FIG. 4A). In the upper space (S3), an outdoor exhaust chamber (19b) is defined on the upper side of the horizontal partition (59), and an upper air supply channel (from the lower side of the horizontal partition (59) to the front panel (14) ( 70) is sectioned. The outdoor exhaust chamber (19b) communicates with the exhaust communication channel (68) shown in FIG. The upper end of the upper air supply channel (70) communicates with the indoor air supply chamber (19a). Further, the sixth damper (D6) and the eighth damper (D8) of the supply damper partition plate (48b) face the upper supply passage (70).

  As shown in FIG. 10, the third upper partition member (80) includes a first side plate portion (81) formed along the right side wall portion (55) of the second upper partition member (54), and a second upper portion. A second side plate (82) formed along the central partition (56) of the partition member (54), a rear end of the first side plate (81), and a rear end of the second side plate (82) And an intermediate side plate portion (83) formed over the entire area. That is, the cross-sectional shape of the third upper partition member (80) is formed in a substantially U-shape (U-shape) having an open portion on the front side.

  In the third upper partition member (80), the lower ends of the side plate portions (81, 82) are respectively installed on the installation surfaces (55c, 56d) of the second upper partition member (54), and the intermediate side plate portion (83) The left and right end portions of the second upper partition member (54) are disposed so as to abut on the abutment portions (55b, 56e). When the third upper partition member (80) is arranged in this way, the space between the right side wall portion (55) and the central partition portion (56) is divided into two spaces (ie, the indoor air supply chamber (19a)). And an outdoor exhaust chamber (19b)). The third upper partition member (80) constitutes an air supply / exhaust partition portion that is detachably attached to the casing (11) so as to partition the indoor air supply chamber (19a) and the outdoor exhaust chamber (19b) forward and backward.

  The air supply fan unit (84) includes an air supply fan (85) and an air supply side mounting plate (86) for supporting the air supply fan (85). The air supply fan (85) is a centrifugal multi-blade fan (so-called sirocco fan). The air supply side mounting plate (86) includes a main body portion (86a) to which the motor of the air supply fan (85) is attached, a side plate portion (86b) formed on the left and right sides of the main body portion (86a), and a main body portion. (86a) and an upper plate part (86c) formed on the upper side. Each side plate part (86b) of the supply side mounting plate (86) is installed on each installation surface (55c, 56d) of the second upper partition member (54). Further, the right side plate portion (86b) and the upper plate portion (86c) of the supply side mounting plate (86) are connected to the above-described front panel (14) (see FIG. 1) via a fastening member such as a screw. Fixed.

  The exhaust fan unit (87) includes an exhaust fan (88) and an exhaust side mounting plate (89) for supporting the exhaust fan (88). The exhaust fan (88) is a centrifugal multi-blade fan (so-called sirocco fan). The exhaust side mounting plate (89) includes a main body portion (89a) to which the motor of the exhaust fan (88) is mounted, and side plate portions (89b) formed on the left and right sides of the main body portion (89a). . Each side plate part (89b) of the exhaust side mounting plate (89) is installed on each installation surface (55c, 56d) of the second upper partition member (54). Further, these side plate portions (89b) are fixed to the top plate (13) via the reinforcing rib (75) described above.

<Configuration of refrigerant circuit>
The humidity control apparatus (10) includes a refrigerant circuit (30) to which the compressor (31) and the adsorption heat exchanger (33) described above are connected. The refrigerant circuit (30) constitutes a heat medium circuit through which a heat medium (refrigerant) for heating or cooling the adsorbent of the adsorption heat exchanger (33) flows. The configuration of the refrigerant circuit (30) will be described with reference to FIG.

  The refrigerant circuit (30) is a closed circuit to which refrigerant pipes are connected, and is filled with refrigerant. In the refrigerant circuit (30), the refrigerant circulates to perform a vapor compression refrigeration cycle. A compressor (31), a four-way switching valve (32), a first adsorption heat exchanger (33a), and a second adsorption heat exchanger (33b) are connected to the refrigerant circuit (30).

  The compressor (31) has a variable capacity (operating frequency) by so-called inverter control. That is, the motor (M1) of the compressor (31) is configured such that the rotation speed can be adjusted according to the output frequency (operating frequency) of the supplied AC power (see FIG. 16).

  The four-way switching valve (32) has first to fourth ports and is configured to be able to switch the communication state of these ports. The first port of the four-way switching valve (32) is connected to the discharge pipe (31a) of the compressor (31), and the third port of the four-way switching valve (32) is the suction pipe (31b) of the compressor (31). Connected to. The second port of the four-way switching valve (32) is connected to the gas side end of the first adsorption heat exchanger (33a), and the fourth port of the four-way switching valve (32) is connected to the second adsorption heat exchanger (33b). ) Gas side end. The four-way switching valve (32) communicates the first port and the fourth port to communicate the second port and the third port (first state indicated by the solid line in FIG. 11), the first port and the second port. It is configured to be switchable to a state (second state indicated by a broken line in FIG. 11) in which the two ports are communicated and the third port and the fourth port are communicated. That is, the four-way switching valve (32) includes a flow path in which the refrigerant radiates heat in the second adsorption heat exchanger (33b) and evaporates in the first adsorption heat exchanger (33a), and the first adsorption heat exchanger ( A refrigerant flow path switching mechanism for switching the flow path of the refrigerant circuit (30) to the flow path where the refrigerant radiates heat in 33a) and evaporates in the second adsorption heat exchanger (33b) is configured.

  The refrigerant circuit (30) is provided with a one-way circuit (36) that keeps the refrigerant flow in one direction even when the state of the four-way switching valve (32) is switched. The one-way circuit (36) includes a bridge circuit (36a) in which four check valves (CV-1, CV-2, CV-3, CV-4) are connected in a bridge shape, and a bridge circuit (36a ), A main circuit (36b) and a reheat circuit (36c) connected in parallel are provided.

  Each check valve (CV-1, CV-2, CV-3, CV-4) of the bridge circuit (36a) allows the refrigerant to flow in the direction of the arrow in FIG. The flow of is prohibited. In the bridge circuit (36a), the liquid side end of the first adsorption heat exchanger (33a) is connected between the first check valve (C1-1) and the second check valve (CV-2), The liquid side end of the second adsorption heat exchanger (33b) is connected between the third check valve (CV-3) and the fourth check valve (CV-4). The junction of the first check valve (CV-1) and the third check valve (CV-3), and the flow divider of the second check valve (CV-2) and the fourth check valve (CV-4) The main circuit (36b) and the reheat circuit (36c) are connected in parallel with each other. A main expansion valve (37) is connected to the main circuit (36b). The reheat circuit (36c) is connected to the reheat heat exchanger (35) on the upstream side and to the reheat side expansion valve (38) on the downstream side. The main expansion valve (37) and the reheat side expansion valve (38) are electrically operated flow rate control valves whose opening degree is variable, and are constituted by, for example, electronic expansion valves.

<Control unit and sensor>
As shown in FIG. 11, the humidity control apparatus (10) includes a controller (100) and various sensors. The controller (100) adjusts the operating capacity of the compressor (31) and the opening of each expansion valve (37, 38) according to the operating conditions and the detection values of the sensors. Further, the controller (100) adjusts the open / close state of each damper (D1 to D8) and the operating air volume of each fan (85, 88) according to the operating conditions.

  As schematically shown in FIG. 3B, the humidity control apparatus (10) of the present embodiment includes an inside air humidity sensor (111), an outside air humidity sensor (113), and a first outside air temperature sensor (114). And a second outside temperature sensor (115).

  The room air humidity sensor (111) is disposed in the upper room air flow path (69). The room air humidity sensor (111) detects the humidity (relative humidity) of the room air (RA) taken into the room air suction chamber (19d).

  The outside air humidity sensor (113) and the first outside air temperature sensor (114) are disposed between the filter (26, 27) and the reheat heat exchanger (35) in the lower first outside air flow path (63a). The outdoor air humidity sensor (113) detects the humidity (relative humidity) of the outdoor air (OA) upstream of the reheat heat exchanger (35), and the first outdoor air temperature sensor (114) is the reheat heat exchanger (35). ) Detect the temperature of the outdoor air (OA) upstream. The second outside air temperature sensor (115) is disposed downstream of the reheat heat exchanger (35) in the lower first outside air flow path (63a). The second outside air temperature sensor (115) detects the temperature of the outdoor air (OA) on the downstream side of the reheat heat exchanger (35).

  In the controller (100) of this embodiment, based on the detection values of these sensors (111, 113, 114, 115), the required humidity control capacity of the humidity control device (10) (dehumidification load during dehumidification operation or humidification load during humidification operation) Is required. The controller (100) controls the operating capacity of the compressor (31) (that is, the refrigerant circulation amount of the refrigerant circuit (30)) so as to satisfy this humidity control capability.

-Driving action-
Next, the operation of the humidity control apparatus (10) will be described in order with reference to the drawings. The humidity control apparatus (10) is executed by switching between a dehumidifying operation for dehumidifying the room and a humidifying operation for humidifying the room.

<Dehumidifying operation>
The dehumidifying operation is performed under conditions where the outdoor temperature and humidity are relatively high in summer and the like. In this dehumidifying operation, outdoor air (OA) is dehumidified, and the dehumidified air is supplied indoors as supply air (SA). At the same time, in the dehumidifying operation, the room air (RA) is discharged to the outside as exhaust air (EA). In the dehumidifying operation, the first operation and the second operation are alternately performed at predetermined intervals, and the room is continuously dehumidified.

  In the first operation of the dehumidifying operation, in the refrigerant circuit (30) shown in FIG. 11, the four-way switching valve (32) is set to the first state, and the reheat side expansion valve (38) is almost fully closed. The expansion valve (37) is opened at a predetermined opening. When the compressor (31) is operated, the refrigerant compressed by the compressor (31) dissipates heat in the second adsorption heat exchanger (33b), passes through the bridge circuit (36a), and passes through the main circuit (36b). Flowing. In the main circuit (36b), the refrigerant is decompressed by the main expansion valve (37). The refrigerant decompressed by the main expansion valve (37) passes through the bridge circuit (36a), evaporates in the first adsorption heat exchanger (33a), and is sucked into the compressor (31).

  In the second operation of the dehumidifying operation, in the refrigerant circuit (30) shown in FIG. 11, the four-way switching valve (32) is set to the second state, and the reheat side expansion valve (38) is almost fully closed. The expansion valve (37) is opened at a predetermined opening. When the compressor (31) is operated, the refrigerant compressed by the compressor (31) dissipates heat in the first adsorption heat exchanger (33a), passes through the bridge circuit (36a), and passes through the main circuit (36b). Flowing. In the main circuit (36b), the refrigerant is decompressed by the main expansion valve (37). The refrigerant decompressed by the main expansion valve (37) passes through the bridge circuit (36a), evaporates in the second adsorption heat exchanger (33b), and is sucked into the compressor (31).

  As described above, in the dehumidifying operation of the humidity control apparatus (10), in principle, no refrigerant is supplied to the reheat circuit (36c). That is, in the dehumidifying operation, the reheat heat exchanger (35) is stopped.

  In the first operation of the dehumidifying operation, as shown in FIGS. 12 and 13, the first damper (D1), the fourth damper (D4), the sixth damper (D6), and the seventh damper (D7) are opened. The second damper (D2), the third damper (D3), the fifth damper (D5), and the eighth damper (D8) are closed, and the air supply fan (85) and the exhaust fan (88) are operated. . 12 to 15, the hatched damper represents a closed state, and the white damper represents an open state. In FIGS. 12 to 15, white arrows represent the air (outdoor air (OA) or supply air (SA)) supplied from the outside to the room, and the black arrows are discharged from the room to the outside. Air (room air (RA) or exhaust air (EA)).

  In the first operation of the dehumidifying operation, the outdoor air (OA) taken into the outside air suction chamber (19c) via the duct flows in the duct inner passage (71) and the outside air inflow passage (61) in this order, It flows into the first outside air flow path (63a). The air flows through the insect filter (26) and the pleat filter (27) in order, and then passes through the reheat heat exchanger (35). In the dehumidifying operation, the reheat heat exchanger (35) is stopped as described above. For this reason, air is not heated in the reheat heat exchanger (35).

  The air that has passed through the reheat heat exchanger (35) flows through the lower second external air flow path (63b), the intermediate external air flow path (64), and the first damper (D1) in this order, and the first adsorption heat exchanger (33a) Pass through. In the first adsorption heat exchanger (33a) in the evaporator state, water vapor in the air is adsorbed by the adsorbent. The heat of adsorption generated at this time is used for the heat of evaporation of the refrigerant. The air adsorbed and dehumidified by the first adsorption heat exchanger (33a) flows through the seventh damper (D7), the upper air supply channel (70), and the indoor air supply chamber (19a) in this order, and passes through the duct. Supplied as indoor supply air (SA).

  In the first operation of the dehumidifying operation, the room air (RA) taken into the room air suction chamber (19d) via the indoor duct flows in order through the upper room air flow path (69) and the sixth damper (D6). And passing through the second adsorption heat exchanger (33b). In the second adsorption heat exchanger (33b) in the state of a radiator, water vapor is desorbed from the adsorbent into the air, and the adsorbent is regenerated. The air used for regeneration of the adsorbent of the second adsorption heat exchanger (33b) is the fourth damper (D4), the intermediate exhaust passage (65), the exhaust communication passage (68), the outdoor exhaust chamber (19b) In order, and is discharged as exhaust air (EA) to the outdoor space via the duct.

  In the second operation of the dehumidifying operation, as shown in FIGS. 14 and 15, the second damper (D2), the third damper (D3), the fifth damper (D5), and the eighth damper (D8) are opened. The first damper (D1), the fourth damper (D4), the sixth damper (D6), and the seventh damper (D7) are closed, and the air supply fan (85) and the exhaust fan (88) are operated. .

  In the second operation of the dehumidifying operation, the outdoor air (OA) taken into the outside air suction chamber (19c) via the duct flows in the duct inner passage (71) and the outside air inflow passage (61) in this order, It flows into the first outside air flow path (63a). The air flows through the insect filter (26) and the pleat filter (27) in order, and then passes through the reheat heat exchanger (35). In the dehumidifying operation, the reheat heat exchanger (35) is stopped as described above. For this reason, air is not heated in the reheat heat exchanger (35).

  The air that has passed through the reheat heat exchanger (35) flows through the lower second external air flow path (63b), the intermediate external air flow path (64), and the second damper (D2) in this order, and the second adsorption heat exchanger (33b). Pass through. In the second adsorption heat exchanger (33b) in the evaporator state, water vapor in the air is adsorbed by the adsorbent. The heat of adsorption generated at this time is used for the heat of evaporation of the refrigerant. The air adsorbed and dehumidified by the second adsorption heat exchanger (33b) flows through the eighth damper (D8), the upper air supply channel (70), and the indoor air supply chamber (19a) in this order, via the duct. Supplied as indoor supply air (SA).

  In the second operation of the dehumidifying operation, the room air (RA) taken into the room air suction chamber (19d) via the indoor duct flows in order through the upper room air flow path (69) and the fifth damper (D5). And passes through the first adsorption heat exchanger (33a). In the first adsorption heat exchanger (33a) in the state of a radiator, water vapor is desorbed from the adsorbent into the air, and the adsorbent is regenerated. The air used for the regeneration of the adsorbent of the first adsorption heat exchanger (33a) passes through the third damper (D3), the intermediate exhaust passage (65), the exhaust communication passage (68), the outdoor exhaust chamber. (19b) flows in order and is discharged as exhaust air (EA) to the outdoor space via the duct.

<Humidification operation>
The humidification operation is performed under conditions where the outdoor temperature and humidity are relatively low in winter and the like. In this humidification operation, outdoor air (OA) is humidified, and the humidified air is supplied indoors as supply air (SA). At the same time, in the humidifying operation, the room air (RA) is discharged to the outside as exhaust air (EA). In this humidification operation, the first operation and the second operation are alternately performed at predetermined intervals, and the room is continuously humidified.

  In the first operation of the humidifying operation, in the refrigerant circuit (30) shown in FIG. 11, the four-way switching valve (32) is set to the second state, the main expansion valve (37) is closed, and the reheat side expansion valve (38 ) Is opened at a predetermined opening. When the compressor (31) is operated, the refrigerant compressed by the compressor (31) dissipates heat in the first adsorption heat exchanger (33a), passes through the bridge circuit (36a), and reheats the circuit (36c). Flowing. In the reheat circuit (36c), the high-pressure refrigerant in a gas-liquid two-phase state flows through the reheat heat exchanger (35), and the refrigerant radiates heat to the air (outdoor air (OA)). The refrigerant radiated by the reheat heat exchanger (35) is decompressed by the reheat side expansion valve (38). The refrigerant decompressed by the reheat side expansion valve (38) passes through the bridge circuit (36a), evaporates in the second adsorption heat exchanger (33b), and is sucked into the compressor (31).

  In the second operation of the humidifying operation, in the refrigerant circuit (30) shown in FIG. 11, the four-way switching valve (32) is set to the first state, the main expansion valve (37) is closed, and the reheat side expansion valve (38 ) Is opened at a predetermined opening. When the compressor (31) is operated, the refrigerant compressed by the compressor (31) dissipates heat in the second adsorption heat exchanger (33b), passes through the bridge circuit (36a), and reheats the circuit (36c). Flowing. In the reheat circuit (36c), the high-pressure refrigerant in a gas-liquid two-phase state flows through the reheat heat exchanger (35), and the refrigerant radiates heat to the air (outdoor air (OA)). The refrigerant radiated by the reheat heat exchanger (35) is decompressed by the reheat side expansion valve (38). The refrigerant decompressed by the reheat side expansion valve (38) passes through the bridge circuit (36a), evaporates by the first adsorption heat exchanger (33a), and is sucked into the compressor (31).

  As described above, in the humidifying operation of the humidity control apparatus (10), the refrigerant is supplied to the reheat circuit (36c), and the reheat heat exchanger (35) is operated. The heating capacity of the reheat heat exchanger (35) is appropriately adjusted according to the opening degree of the reheat side expansion valve (38). In this humidification operation, if the temperature of the outdoor air (OA) becomes higher than the predetermined temperature, the reheat side expansion valve (38) is almost fully closed, and the main expansion valve (37) is opened at a predetermined opening degree. Is done. Thereby, air can be humidified by each adsorption heat exchanger (33a, 33b), stopping a reheat heat exchanger (35).

  In the first operation of the humidifying operation, as shown in FIGS. 12 and 13, the first damper (D1), the fourth damper (D4), the sixth damper (D6), and the seventh damper (D7) are opened. The second damper (D2), the third damper (D3), the fifth damper (D5), and the eighth damper (D8) are closed, and the air supply fan (85) and the exhaust fan (88) are operated. .

  In the first operation of the humidifying operation, the outdoor air (OA) taken into the outside air suction chamber (19c) via the duct flows in the duct inner passage (71) and the outside air inflow passage (61) in this order. It flows into the first outside air flow path (63a). The air flows through the insect filter (26) and the pleat filter (27) in order, and then passes through the reheat heat exchanger (35). In the humidification operation, a refrigerant is appropriately supplied to the reheat heat exchanger (35), and the outdoor air (OA) is heated by the reheat heat exchanger (35).

  The air heated by the reheat heat exchanger (35) flows through the lower second outside air flow path (63b), the intermediate outside air flow path (64), and the first damper (D1) in this order, and the first adsorption heat exchanger (33a) ) In the first adsorption heat exchanger (33a) in the state of a radiator, water vapor is desorbed from the adsorbent into the air, and the air is humidified. The air humidified by the first adsorption heat exchanger (33a) flows in order through the seventh damper (D7), the upper air supply channel (70), and the indoor air supply chamber (19a), and enters the indoor space via the duct. Supplied as supply air (SA).

  In the first operation of the humidification operation, the room air (RA) taken into the room air suction chamber (19d) via the indoor duct flows in order through the upper room air flow path (69) and the sixth damper (D6). And passing through the second adsorption heat exchanger (33b). In the second adsorption heat exchanger (33b) in the evaporator state, water vapor in the air is adsorbed by the adsorbent, and moisture is given to the adsorbent. The air given moisture to the adsorbent of the second adsorption heat exchanger (33b) passes through the fourth damper (D4), the intermediate exhaust passage (65), the exhaust communication passage (68), and the outdoor exhaust chamber (19b). It flows in order and is discharged as exhaust air (EA) to the outdoor space via the duct.

  In the second operation of the humidifying operation, as shown in FIGS. 14 and 15, the second damper (D2), the third damper (D3), the fifth damper (D5), and the eighth damper (D8) are opened. The first damper (D1), the fourth damper (D4), the sixth damper (D6), and the seventh damper (D7) are closed, and the air supply fan (85) and the exhaust fan (88) are operated. .

  In the second operation of the humidifying operation, the outdoor air (OA) taken into the outside air suction chamber (19c) via the duct flows in the duct inner passage (71) and the outside air inflow passage (61) in this order, It flows into the first outside air flow path (63a). The air flows through the insect filter (26) and the pleat filter (27) in order, and then passes through the reheat heat exchanger (35). In the humidification operation, a refrigerant is appropriately supplied to the reheat heat exchanger (35), and the outdoor air (OA) is heated by the reheat heat exchanger (35).

  The air heated by the reheat heat exchanger (35) flows through the lower second external air flow path (63b), the intermediate external air flow path (64), and the second damper (D2) in this order, and the second adsorption heat exchanger (33b ) In the second adsorption heat exchanger (33b) in the state of a radiator, water vapor is desorbed from the adsorbent into the air, and the air is humidified. The air humidified by the second adsorption heat exchanger (33b) flows in order through the eighth damper (D8), the upper air supply channel (70), and the indoor air supply chamber (19a), and enters the indoor space via the duct. Supplied as supply air (SA).

  In the second operation of the humidifying operation, the room air (RA) taken into the room air suction chamber (19d) via the indoor duct flows in order through the upper room air flow path (69) and the fifth damper (D5). And passes through the first adsorption heat exchanger (33a). In the first adsorption heat exchanger (33a) in the evaporator state, water vapor in the air is adsorbed by the adsorbent, and moisture is given to the adsorbent. The air that has given moisture to the adsorbent of the first adsorption heat exchanger (33a) passes through the third damper (D3), the intermediate exhaust passage (65), the exhaust communication passage (68), and the outdoor exhaust chamber (19b). It flows in order and is discharged as exhaust air (EA) to the outdoor space via the duct.

<Peripheral structure of heat dissipation unit>
First, the structure around the heat dissipation unit (92) will be described with reference to FIGS. 5 and 17 to 19.

  As shown in FIG. 17, a pair of rail-shaped guide members (110, 110) are laid on the bottom surface of the machine room (60). The guide member (110) has an L-shaped longitudinal section and extends from the front end to the rear end of the machine chamber (60).

  An installation stand (111) is provided below the compressor (31). The compressor (31) is installed on the installation table (111) via a vibration isolator (not shown). The installation base (111) is formed in a rectangular plate shape and is slidably supported between the pair of guide members (110). Thereby, the installation base (111) and the compressor (31) can move back and forth along the guide member (110). Similarly, the electrical component box (90) is slidably supported between the pair of guide members (110). Thereby, the electrical component box (90) can be moved back and forth along the guide member (110).

  As shown in FIGS. 18 and 19, in the reheat chamber (63), the lower first outside air passage (63a) and the lower second outside air passage (63b) are vertically adjacent to each other with the upper support plate (41d) interposed therebetween. doing. That is, the lower first outside air passage (63a) and the lower second outside air passage (63b) constitute first and second passages adjacent to each other. The outflow end of the lower first outside air flow path (63a) and the inflow end of the lower second outside air flow path (63b) are connected to the relay path (63c). The relay path (63c) guides the air flowing out from the lower first outside air flow path (63a) to the right side, and further guides the air to the left lower second outside air flow path (63b). The lower first outside air flow path (63a), the relay path (63c), and the lower second outside air flow path (63b) are formed so that the vertical cross section is U-shaped or U-shaped to make the outdoor air U-turn. A flow path (UC) is configured. In the present embodiment, the above-described outside air suction chamber (19c), duct internal flow path (71), external air inflow path (61), lower first external air flow path (63a), relay path (63c), lower second An outside air passage (OC) through which outdoor air (outside air) on the upstream side of the adsorption heat exchanger (33) flows is formed across the outside air passage (63b) and the intermediate outside air passage (64).

  As shown in FIGS. 17 to 19, the drawer member (50) of the lower partition member (41) has a front plate portion (50 a) formed along the front panel (14) and a front plate portion (50 a). And a partitioning side plate portion (50b) projecting rearwardly. A stepped portion (50c) having a rectangular shape is formed at the lower rear end portion of the partition side plate portion (50b) (see FIG. 19). Thereby, a vertically long rectangular opening (50a) is formed in the front-rear direction between the step portion (50c) of the drawing member (50) and the main body portion (49) of the lower partition member (41).

<Configuration of heat dissipation unit>
As shown in FIG. 18, the heat dissipation unit (92) is fixed near the upper part of the left side plate (90a) of the electrical component box (90). The heat radiating unit (92) includes a rectangular cylindrical frame part (93) and a heat sink (94) installed in the heat radiating flow path (93a) in the frame part (93). The frame portion (93) is formed in a horizontally long rectangular shape that fits into the opening (50a) of the lower partition member (41). Further, the heat dissipation channel (93a) constitutes a part of the outside air channel (OC).

  The heat sink (94) has a plate-shaped heat dissipation substrate (95) and a plurality of heat dissipation fins (96) standing on the heat dissipation substrate (95). The heat dissipating substrate (95) is disposed near the electrical component box (90) in the heat dissipating flow path (93a). The heat dissipation board (95) is in thermal contact with an electrical component (inverter board (91)) located on the back side (right side) thereof. In the heat sink (94) of the present embodiment, four plate-shaped radiating fins (96) are formed. Each radiating fin (96) protrudes toward the relay path (63c) side of the outside air flow path (OC) and extends back and forth along the frame portion (93). The heat sink (94) is made of a highly heat-conductive material such as aluminum. The heat sink (94) constitutes a heat transfer member that exchanges heat between the outdoor air and the electrical component (inverter board (91)).

  The heat sink (94) of the present embodiment is formed in a portion of the side wall (that is, the lower partition portion (41a)) facing the relay path (63c) that faces the lower first outside air flow path (63a). Further, the heat sink (94) is disposed at substantially the same height as the upper support plate (41d) which is a partition. Further, as shown in FIG. 19, the heat sink (94) approaches an intermediate portion (S1) between the first opening / closing damper (first damper (D1)) and the second opening / closing damper (second damper (D2)). Are arranged as follows. Specifically, the area between the first damper (D1) and the second damper (D2) on the outer wall surface of the outside air damper partition plate (45a) (the area with the hatched area in FIG. 19) is A1. The heat sink (94) is located on a virtual plane that includes this region A1 and is perpendicular to the outside air damper partition plate (45a).

-Maintenance of electrical component boxes and compressors-
At the time of maintenance of the electrical component box (90) and the compressor (31), the lower panel (14a) of the front panel (14) is opened, and then the drawer member (50) shown in FIG. 17 is pulled forward. Then, the heat radiating unit (92) is exposed to the front side. In this state, the electrical component box (90) is pulled forward along the guide member (110) together with the heat dissipation unit (92). Further, during maintenance of the compressor (31), the installation base (111) is pulled forward along the guide member (110).

-Heating of outside air by heat dissipation unit-
By the way, in winter and the like, the temperature of outdoor air (OA) may be about −20 ° C. If the humidification operation described above is performed under such conditions, the adsorbent of the adsorption heat exchanger (33) in the condenser state cannot be heated to a sufficient temperature, and the regeneration efficiency of the adsorbent may be reduced. There is. As a result, the humidifying ability of the humidity control apparatus (10) is reduced. Further, when the low-temperature air passes through the dampers (D1, D2), the dampers (D1, D2) are frozen, and there is a possibility that these dampers (D1, D2) malfunction. In addition, when low-temperature outdoor air passes through the adsorption heat exchanger (33), the adsorbent on the surface of the adsorption heat exchanger (33) freezes and the adsorbent may peel off from the surface of the fin (34b). There is sex. Therefore, in this embodiment, the outdoor air (OA) is heated by the heat sink (94).

  Specifically, as shown in FIG. 17, when low temperature outdoor air (OA) flows into the lower first outdoor air flow path (63a), this air is first heated to a predetermined temperature by the reheat heat exchanger (35). Is done. The air heated by the reheat heat exchanger (35) is guided obliquely upward along the lower partition (41a) in the relay path (63c). Here, the lower partition part (41a) is provided with a heat dissipation unit (92) so as to face the lower first outside air flow path (63a). For this reason, this air becomes easy to hit each radiation fin (96) of a heat sink (94), and can increase the heat transfer rate between outside air and a heat sink (94). As a result, the outside air is efficiently heated by the heat sink (94), and at the same time, the inverter board (91) is efficiently cooled by the outside air.

  The air heated by the heat sink (94) passes through the upper outside air passage (OC) and then flows into the intermediate outside air passage (64). Here, in the first operation of the humidifying operation, as described above, the first damper (D1) is opened and the second damper (D2) is closed. Accordingly, the air flowing into the intermediate outside air flow path (64) is guided toward the front side, passes through the first damper (D1), and flows into the first humidity control chamber (66a) (enclosed by a solid line in FIG. 19). See arrow). Further, in the second operation of the humidifying operation, as described above, the second damper (D2) is opened and the first damper (D1) is closed. Therefore, the air that has flowed into the intermediate outside air flow path (64) is guided rearward, passes through the second damper (D2), and flows into the second humidity control chamber (66b) (enclosed by the broken line in FIG. 19). See arrow).

  Since the air flowing into the humidity control chamber (66) is heated by the reheat heat exchanger (35) and the heat sink (94), the regeneration efficiency of the adsorbent in the adsorption heat exchanger (33) is improved. . As a result, the humidifying ability of the humidity control apparatus (10) can be improved. The air is heated to 0 ° C. or higher by the reheat heat exchanger (35) and the heat sink (94). For this reason, it is also possible to avoid freezing of the adsorbents of the dampers (D1, D2) and the adsorption heat exchanger (33).

  As shown in FIG. 19, the heat sink (94) is disposed in the vicinity of the middle portion (region A1) of the two dampers (D1, D2) in the front-rear direction. For this reason, in both the first operation in which the outside air flows into the first damper (D1) and the second operation in which the outside air flows into the second damper (D2), the outside air easily hits the heat sink (94). As a result, in both the first operation and the second operation, the ability to heat outside air by the heat sink (94) can be improved, and at the same time, the cooling ability of the inverter board (91) can be improved.

-Effect of the embodiment-
According to the said embodiment, the external air before passing an adsorption heat exchanger (33) can be heated using the heat | fever of an electrical component (inverter board | substrate (91)). As a result, the regeneration efficiency of the adsorbent of the adsorption heat exchanger (33) can be improved, and as a result, the humidification capacity can be improved.

  Further, even under conditions where the temperature of the outside air is extremely low, the outside air can be heated to 0 ° C. or higher, so that it is possible to prevent the dampers (D1, D2) from freezing and causing malfunction. Moreover, it can also avoid that the adsorption agent of an adsorption heat exchanger (33) freezes and peels.

  Moreover, in the said embodiment, since an electrical component (inverter board | substrate (91)) can be cooled with external air, it can prevent that the temperature of an inverter board | substrate (91) exceeds durable temperature.

<Modification of Embodiment>
In the above embodiment, the following may be modified.

  In the humidity control apparatus (10) of the modification shown in FIG. 20, the heat sink (94) is arranged upstream of the reheat heat exchanger (35) in the outside air flow path (OC). That is, in the heat sink (94), heat is exchanged between the outside air upstream of the reheat heat exchanger (35) and the electrical component (inverter board (91)). In this modified example, the temperature of the outside air passing through the heat sink (94) is lower than that in the above embodiment. For this reason, the cooling effect of an electrical component (inverter board | substrate (91)) can be improved.

  Other functions and effects are the same as those of the above-described embodiment.

<< Other Embodiments >>
In the above embodiment, heat exchange is performed between the inverter board (91) and the outside air in the heat sink (94). However, in the heat sink (94), heat may be exchanged between the external air and other electrical components such as other circuit boards and reactors.

  Moreover, in the said embodiment, the external air which flows through an external air flow path (OC), and an electrical component (91) are indirectly heat-exchanged via the heat sink (94) which is a heat-transfer member. However, the electrical component (91) is disposed upstream of the adsorption heat exchanger (33) in the outdoor air flow channel (OC), and the external air flow channel (91) is directly exchanged heat between the external air and the electrical component (91). OC) may be configured. In this case, for example, the electrical component (91) may be disposed at a portion corresponding to the heat sink (94) shown in FIG. That is, by disposing the electrical component (91) in a portion of the side wall of the relay path (63c) facing the lower first outside air flow path (63a), the outside air can easily hit the electrical component (91). The effect of raising the temperature of outside air by (91) (in other words, the effect of cooling the electrical component (91) by outside air) can be improved. Further, in the outside air flow path (OC), the electrical component (91) may be disposed downstream of the reheat heat exchanger (35), and the electrical component (91) may be disposed upstream of the reheat heat exchanger (35). It may be arranged on the side.

  As described above, the present invention is useful for a humidity control apparatus including an adsorption heat exchanger.

10 Humidity control device
11 Casing
30 Refrigerant circuit (heat medium circuit)
33 Adsorption heat exchanger
35 Reheat heat exchanger (auxiliary heating section)
63a Lower first outside air channel (first channel)
63b Lower second external air flow path (second flow path)
63c junction
91 Inverter board (electrical components)
94 Heat sink
OC outside air flow path
TC turn flow path

Claims (4)

A casing (11), an adsorption heat exchanger (33) accommodated in the casing (11) and carrying an adsorbent on its surface, and the adsorption heat exchanger (33) connected to the adsorption heat exchanger A humidity control apparatus comprising a heat medium circuit (30) through which a heat medium for heating the adsorbent of (33) flows, and an electrical component (91),
In the casing (11), an outside air flow path (OC) through which outside air before passing through the adsorption heat exchanger (33) flows is formed,
The outside air flow path (OC) allows the outside air and the electrical component (91) to exchange heat via the heat transfer member (94) or directly exchanges heat between the electrical component (91) and the outside air. A humidity control device characterized in that it is configured as described above. In claim 1,
In the outside air channel (OC), an auxiliary heating part (35) for heating outside air before heat exchange with the electrical component (91) is provided upstream of the adsorption heat exchanger (33). Humidity control device. In claim 1,
In the outside air channel (OC), an auxiliary heating part (35) for heating outside air after heat exchange with the electrical component (91) is provided on the upstream side of the adsorption heat exchanger (33). Humidity control device. In any one of Claims 1 thru | or 3,
The outside air channel (OC) includes first and second channels (63a, 63b) adjacent to each other, an outflow end of the first channel (63a), and an inflow end of the second channel (63b). Including a turn channel (TC) having a relay channel (63c) connecting
The humidity control apparatus, wherein the heat transfer member (94) or the electrical component (91) is disposed in a portion of the side wall of the relay path (63c) facing the first flow path (63a).

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