JP2022090454A - air conditioner - Google Patents

Abstract

To provide an air conditioner that can improve cooling capacity.SOLUTION: The air conditioner comprises: a housing that has a first outlet and a second outlet; a first flow path that communicates with the first outlet; a second flow path that communicates with the second outlet; a sensible heat exchanger that exchanges sensible heat between first air flowing in the first flow path and second air flowing in the second flow path; a first vaporization filter that cools the first air by the latent heat of water; and a second vaporization filter that cools the second air by using the latent heat of water. The first vaporization filter is disposed downstream of the sensible heat exchanger in the flow direction of the first air, and the second vaporization filter is disposed upstream of the sensible heat exchanger in the flow direction of the second air.SELECTED DRAWING: Figure 1

Description

The present invention relates to an air conditioner.

A vaporization-cooled air conditioner that sucks in indoor air, uses the heat of vaporization of water to lower the ambient temperature, and blows out the cooled air into the room is known (for example, Patent Document 1). The air conditioner (cold air fan) of Patent Document 1 communicates the air blowing means arranged in the casing with the suction port and the first air outlet, and guides the air flow generated by the air blowing means to the first air outlet. It is arranged in the second flow path and the second flow path that communicate the flow path, the suction port and the second air outlet, and guide the air flow generated by the air blowing means to the second air outlet, and is the second by the heat of vaporization of water. A heat exchanger is provided which is provided with a vaporizing means for cooling the air flowing through the two flow paths and exchanges heat between the air flow cooled by the vaporizing means of the second flow path and the air flow flowing through the first flow path. Has been done. In the second flow path provided with the vaporizing means, on the downstream side of the vaporizing means, atomized water sprayed by the vaporizing means (undevaporated sprayed water) and vaporized water (evaporated sprayed water) are used. Air with increased absolute humidity flows. The air with increased humidity is blown out as exhaust gas from the second outlet, which is the outlet of the second flow path. The air flow flowing through the first flow path cooled through the heat exchanger is blown out from the first outlet to the air-conditioned space as supply air.

In the air conditioner of Patent Document 1, the air flowing through the second flow path blown by the blowing means passes through a plurality of tubes included in the sensible heat exchanger and flows through the first flow path blown by the blowing means. By passing around the plurality of tubes, the air flowing through the second flow path and the air flowing through the first flow path exchange heat with each other.

Japanese Unexamined Patent Publication No. 2014-092338

However, in the air conditioner of Patent Document 1, cooling of the air supplied to the room is performed only by heat exchange with the air that has passed through the vaporizing means by the heat exchanger, so that the air is cooled efficiently. I can't.

The invention has been made in view of such circumstances, and an object of the present invention is to provide an air conditioner capable of improving the cooling capacity.

The air exchanger according to one aspect of the present disclosure includes a housing having a first outlet and a second outlet, a first flow path communicating with the first outlet, and a second channel communicating with the second outlet. A sensible heat exchanger that exchanges sensible heat between the flow path, the first air flowing through the first flow path, and the second air flowing through the second flow path, and the first air is cooled by the latent heat of water. The first vaporization filter is provided with a first vaporization filter for cooling the second air by latent heat of water, and the first vaporization filter is downstream of the visible heat exchanger in the flow direction of the first air. The second vaporization filter is provided on the upstream side of the sensible heat exchanger in the flow direction of the second air.

In this embodiment, the air conditioner includes two flow paths, a first flow path and a second flow path, and a sensible heat exchanger that exchanges sensible heat between the first air and the second air flowing through these flow paths. Be prepared. The air conditioner further includes a first vaporization filter and a second vaporization filter, and the first air passing through the first vaporization filter is cooled by the latent heat (heat of vaporization) of water permeating the first vaporization filter, and the first vaporization filter is provided. 2 The second air passing through the vaporization filter is cooled by the latent heat (heat of vaporization) of water permeating the second vaporization filter. Since the second vaporization filter is provided on the upstream side of the sensible heat exchanger in the flow direction of the second air, it flows into the sensible heat exchanger after being cooled by the heat of vaporization. The first air flowing into the sensible heat exchanger exchanges heat with the second air cooled by the second vaporization filter via the sensible heat exchanger and is cooled. The first air flowing out of the sensible heat exchanger is further cooled by the first vaporization filter provided on the downstream side of the sensible heat exchanger in the flow direction of the first air, and then supplied from the first outlet. It is blown into the air-conditioned space as Qi (SA). Therefore, since the air conditioner cools the first air blown out into the air-conditioned space in two stages, the first air is efficiently cooled, and the air-conditioned space is efficiently cooled by using the first air. can do. The air conditioner configured in this way has two vaporization filters, a first vaporization filter and a second vaporization filter, in each of the first flow path (supply air flow path) and the second flow path (exhaust flow path), which are different flow paths. Equipped with a filter. By using the first vaporization filter and the second vaporization filter as a cold heat source, the first air can be cooled efficiently. Of the first vaporization filter and the second vaporization filter, the first air blown out to the air-conditioned space as supply air (SA) passes through the first vaporization filter, so that the absolute humidity of the first air is high. The first air can be efficiently cooled while suppressing the rise. The water for generating the heat of vaporization is supplied (supplied) to the first vaporization filter and the second vaporization filter, that is, the water for generating the heat of vaporization is directly directed to the heat exchanger. Is not supplied (watered). Therefore, it is possible to suppress the residual water droplets in the first path and the second path inside the sensible heat exchanger.

In the air conditioner according to one aspect of the present disclosure, the first vaporization filter and the second vaporization filter are fastened in an L shape by a fastening member.

In this embodiment, since the first vaporization filter and the second vaporization filter are fastened in an L shape by the fastening member, the storability when storing in the housing is improved and the size of the housing is reduced. be able to.

In the air conditioner according to one aspect of the present disclosure, the fastening member is a drain pan that receives water that has not been vaporized by the first vaporization filter and the second vaporization filter.

In this embodiment, by using an L-shaped drain pan provided below the first vaporization filter and the second vaporization filter as the fastening member, a dedicated component for fastening the first vaporization filter and the second vaporization filter is provided. It is not necessary, and the air conditioner can be made smaller and lighter.

In the air conditioner according to one aspect of the present disclosure, the heat exchanger is housed in the housing so that the inner surface of the housing and the end surface of the heat exchanger facing the inner surface form an acute angle. ing.

In this embodiment, the sensible heat exchanger is housed in the housing so that the inner surface of the housing and the end face of the sensible heat exchanger facing the inner surface form an acute angle in the range of, for example, 10 degrees to 50 degrees. ing. That is, the sensible heat exchanger is rotated from a state in which the inner surface of the housing and the end surface of the sensible heat exchanger opposed to the inner surface are parallel (attitude position) to a rotation angle corresponding to the acute angle. And it is stored in the housing. By housing the sensible heat exchanger in the housing in the state of being rotated at a predetermined rotation angle in this way, the heat exchangeable area (heat exchange area) in the sensible heat exchanger is increased with respect to the housing size. It can be secured to a large extent.

In the air conditioner according to one aspect of the present disclosure, the microheat exchanger includes a first path through which the first air flows and a second path through which the second air flows, and the first vaporization filter is the above. The outlet of the first path is covered, and the second vaporization filter covers the inlet of the second path.

In this embodiment, the sensible heat exchanger includes a first path through which the first air flows and a second path through which the second air flows. Therefore, the first path constitutes a part of the first flow path, and the second path forms a part of the second flow path. Since the first vaporization filter provided on the downstream side of the sensible heat exchanger in the flow direction of the first air is provided so as to cover the outlet of the first path, the outlet of the first path flows out (exposed). The first air (outflowing from the heat exchanger) can be efficiently cooled. That is, the first vaporization filter passes through the opening surface on the first outlet side where the outlet of the first path is formed so that all the first air flowing out of the outlet of the first path passes through the first vaporization filter. , Covering. Since the second vaporization filter provided on the upstream side of the sensible heat exchanger in the flow direction of the second air is provided so as to cover the inlet of the second path, it flows into the inlet of the second path (sensible). The second air flowing into the heat exchanger) can be efficiently cooled. That is, the second vaporization filter passes through the opening surface on the second inlet side where the inlet of the second path is formed so that all the second air flowing into the inlet of the second path passes through the second vaporization filter. , Covering. With such a configuration, it is possible to reduce the flow rate of the air bypassed without passing through the first vaporization filter or the second vaporization filter.

In the air conditioner according to one aspect of the present disclosure, in forming a orthogonal flow in the sensible heat exchanger, the first path and the second path are provided so as to intersect each other and face the sensible heat exchanger. The angle formed by each of the one surface of the first vaporization filter and the second vaporization filter is equal to or larger than the intersection angle of the first path and the second path.

In this embodiment, the first path and the second path of the heat exchanger are provided so as to intersect each other, so that a orthogonal flow is formed between the first air and the second air. The angle formed from each of the end faces of the first vaporization filter and the second vaporization filter facing the sensible heat exchanger is equal to or larger than the crossing angle of the first path and the second path, and is, for example, 60 to 120 degrees. In addition, the crossing angle of the first path and the second path of the sensible heat exchanger may be a rhombus forming any angle from 60 degrees to 120 degrees instead of 90 degrees, and in this case, the first vaporization. The angle formed from each of the end faces of the filter and the second vaporization filter may be ± 30 degrees with respect to the crossing angle. Therefore, the inside of the L-shape formed from the end faces of each of the first vaporization filter and the second vaporization filter is directed toward the corner of the rectangular heat exchanger, and the first vaporization filter is fastened by the fastening member. Since the second vaporization filter can be arranged, the storage capacity of these filters and the like can be improved and the size of the housing can be reduced.

In the air conditioner according to one aspect of the present disclosure, the first outlet side opening surface provided with the outlet of the first path in the heat exchanger and the housing facing the first outlet side opening surface. The inter-plane distance from the inner surface of the air conditioner becomes larger toward the downstream side of the first air.

In this embodiment, the surface-to-plane distance between the opening surface on the first outlet side of the sensible heat exchanger and the inner surface of the housing facing the opening surface on the first outlet side increases toward the downstream side of the first air. As such, the sensible heat exchanger is housed in a housing. Therefore, the cross-sectional area of the first flow path located on the downstream side of the outlet of the first path provided on the opening surface on the first outlet side can be gradually increased toward the downstream side, and the first It is possible to reduce the pressure loss for the first air flowing out from the outlet of the path.

In the air conditioner according to one aspect of the present disclosure, the housing is provided with a suction port for sucking the first air and the second air, and the suction port and the sensible heat exchanger are provided. An intervening dust collection filter is provided, and the dust collection filter is provided so as to be curved so as to cover the inlet of the first path and the inlet of the second path.

In this embodiment, the dust collecting filter interposed between the suction port and the sensible heat exchanger is provided so as to be curved so as to cover the inlet of the first path and the inlet of the second path of the sensible heat exchanger. .. Therefore, by sharing the dust collection filter in the first flow path and the second flow path, the number of parts in the air conditioner can be reduced. Even if the inlet of the first path and the inlet of the second path are provided on different end faces of the sensible heat exchanger, the first path and the first path can be obtained by curving a single dust collection filter. It is possible to cover both inlets of the two paths and prevent dust from entering the inside of the sensible heat exchanger.

In the air conditioner according to one aspect of the present disclosure, sealing members are provided at both ends of each of the dust collecting filters.

In this embodiment, since the sealing members are provided at both ends of the dust collecting filter, it is possible to suppress the inflow of air into the sensible heat exchanger without passing through the dust collecting filter. can.

In the air conditioner according to one aspect of the present disclosure, the space between the heat exchanger and the suction port is an upstream space in the flow direction of the first air and the second air by the dust collecting filter. And, in the downstream side space, the suction air sucked from the suction port is the first air flowing in the first path and the second air flowing in the second path. A branch flow path that separates from the two air is formed.

In this embodiment, the space between the heat exchanger and the suction port is divided into an upstream space and a downstream space in the flow direction of the first air and the second air by a dust collecting filter, and the downstream space. Is formed with a branch flow path that branches into a first path and a second path. Therefore, while sharing the suction port and the dust collection filter in the first path and the second path, the first path and the second air through which the first air flows in the downstream space on the downstream side of the dust collection filter flow. The first air and the second air that are branched into the second path through which the air flows can be efficiently flowed into the sensible heat exchanger. The upstream space is a space through which the suction air before being branched into the first air and the second air flows, and corresponds to the suction flow path. The suction flow path (upstream space) communicates with the outside of the housing via the suction port. Since the suction flow path (upstream space) is a path shared by the first path and the second path, the suction port can also be shared by the first path and the second path, and the housing has a hole shape. It is possible to improve the degree of freedom of arrangement when providing the suction port, increase the opening area of the suction port, and reduce the flow path resistance (pressure loss) in the suction air while ensuring the strength of the housing.

In the air conditioner according to one aspect of the present disclosure, the upstream space is provided with a supply water channel for supplying water to the first vaporization filter or the second vaporization filter.

In this embodiment, the upstream space corresponds to a suction flow path through which the suction air sucked from the suction port flows, and the temperature of the suction air is equivalent to the temperature of the ambient air outside the housing. .. The water flowing in the supply channel located in the upstream space (suction channel) exchanges heat with the suction air flowing in the suction channel. For example, the temperature of the water flowing in the supply channel is higher than the temperature of the surrounding air. In this case, the water can be cooled by the suction air to improve the cooling efficiency in the air conditioner. For example, fins or the like are provided on the outer peripheral surface of the supply water channel arranged in the upstream space, and the heat transfer efficiency is improved by increasing the heat transfer area when exchanging heat with the suction air. May be good.

In the air conditioner according to one aspect of the present disclosure, a door portion configured to be openable and closable is provided on the side surface of the housing on the side where the first vaporization filter is provided, and the door portion is provided. On the inner surface of the door, a suppressing member for suppressing the intrusion of air into the first flow path without passing through the first vaporization filter is provided.

In this embodiment, since a door portion configured to be openable and closable is provided on the side surface of the side surface of the housing on the side where the first vaporization filter is provided, the door portion is opened (open state). By doing so, it is possible to access the inside from the outside of the housing and perform maintenance work such as replacement of the first vaporization filter or the second vaporization filter. Since the inner surface of the door portion is provided with a suppressing member that suppresses the intrusion of air into the first flow path without passing through the first vaporization filter, the first one on the downstream side of the first vaporization filter is provided. It is possible to prevent air that has not been cooled by the first vaporization filter from entering the flow path. The fact that the restraining member is provided on the inner surface of the door portion is not limited to the case where the restraining member is attached to the inner surface of the door portion, for example, the first vaporization filter or the first vaporization filter and the second vaporization filter. It is included that the restraining member is attached to the fastening member for fastening and. In this case, by closing the door portion (closed state), the inner surface of the door portion presses the restraining member to prevent air from entering the first flow path without passing through the first vaporization filter. May be.

In the air conditioner according to one aspect of the present disclosure, a tank provided outside the housing, a supply water channel for supplying water in the tank to the first vaporization filter and the second vaporization filter, and the above-mentioned It is provided with a recovery water channel for collecting water that has not been vaporized by the first vaporization filter and the second vaporization filter in the tank.

In this embodiment, by providing a tank for holding the water supplied to the first vaporization filter and the second vaporization filter on the outside of the housing, it is not necessary to store the tank in the housing, and the size of the housing is reduced. Can be reduced and the weight of the housing can be reduced. As a result, for example, when the air conditioner is mounted on a moving body such as a forklift, the housing that is the main body of the air conditioner and the tank that is configured as a separate body from the housing are placed separately. The housing and tank can be mounted according to the shape such as the outer shape of the moving body on which the air conditioner is mounted. The tank and the first vaporization filter and the second vaporization filter are communicated with each other by the supply channel and the recovery channel, that is, through the tank, the supply channel, the first vaporization filter and the second vaporization filter, and the recovery channel. A circulation circuit is formed in which water is collected (returned) to the tank. With the circulation circuit, the water not vaporized by the first vaporization filter and the second vaporization filter can be efficiently recovered in the tank, and the amount of water remaining inside the housing can be reduced. For the water permeating the first vaporization filter and the second vaporization filter, for example, after the stop button is pressed by the operator of the air conditioner, the fan is driven in a state where the water from the tank is not supplied. The first vaporization filter and the second vaporization filter may be dried by performing the water-free operation.

The cooling capacity of the air conditioner can be improved.

It is a schematic front view which illustrates one configuration of the air conditioner which concerns on Embodiment 1. FIG. It is a perspective view which illustrates the appearance of the air conditioner. It is a schematic plan view which illustrates the arrangement mode of the sensible heat exchanger. It is explanatory drawing about the cooling of an electric unit (board). It is explanatory drawing about water supply from a tank. It is explanatory drawing about the drive of a pump (water supply pump, recovery pump). It is a schematic perspective view which illustrates one configuration of a cooling unit. It is a schematic side view which illustrates the mode that the air conditioner is placed on the moving body. It is a schematic front view illustrating one configuration of the air conditioner according to the second embodiment. It is a schematic side view exemplifying one configuration of an air conditioner. It is a schematic perspective view which illustrates one configuration of a cooling unit. It is explanatory drawing which illustrates the internal structure of a water supply part. It is a schematic side view which illustrates one composition of a water supply part. It is explanatory drawing which illustrates the main part of the water supply part.

(Embodiment 1)
Hereinafter, embodiments will be described with reference to the drawings. FIG. 1 is a schematic front view illustrating one configuration of the air conditioner 1 according to the first embodiment. FIG. 2 is a perspective view illustrating the appearance of the air conditioner 1. Note that FIG. 1 schematically shows a cross section cut along the line AA in FIG. 2 from above. The air conditioner 1 includes a box-shaped housing 11 and a tank 12 that is formed separately from the housing 11 (main body), and is mounted on a moving body M such as a vehicle as shown in FIG. 8, for example. It is placed and the space around the operator of the moving body M is cooled as an air-conditioned space. Alternatively, the air conditioner 1 may be installed indoors such as a factory. The mounted state (front view, viewpoint from above) of the air conditioner 1 shown in FIG. 1 is shown in front, back, left and right as a normal usage mode of the air conditioner 1. The mounted state of the air conditioner 1 shown in FIG. 2 is shown up / down and front / rear / left / right as a normal usage mode of the air conditioner 1.

The air conditioner 1 includes a cooling unit 3 including two vaporization filters including a tank 12 for storing water, a first vaporization filter 31 and a second vaporization filter 32. The air conditioner 1 lowers the atmospheric temperature by using the heat of vaporization of water supplied from the tank 12 by the first vaporization filter 31 and the second vaporization filter 32 to cool the air-conditioned space, for example, vaporization cooling. It is a type air conditioner.

The cooling unit 3 includes a first vaporization filter 31, a second vaporization filter 32, a water supply unit 33, and a drain pan 34. The water supply unit 33 is provided on the upper part of the first vaporization filter 31 and the second vaporization filter 32, and supplies water to the lower first vaporization filter 31 and the second vaporization filter 32. The drain pan 34 receives water that has not been vaporized by the first vaporization filter 31 and the second vaporization filter 32. Details of the cooling unit 3 will be described later.

The air conditioner 1 is further provided with a heat exchanger 4, and the first air is exchanged between the second air that has passed through the second vaporization filter 32 and the first air that has not passed through the first vaporization filter 31. The air is cooled, and the cooled first air is passed through the first vaporization filter 31 to cool the first air in two stages. The first air is cooled by vaporization cooling after being cooled without increasing the humidity by sensible heat exchange, and the first air cooled in two stages is blown out to the air-conditioned space as supply air (SA: Service Air). Will be done. The second air is exhausted to the outside of the housing 11 as exhaust gas (EA: Exhaust Air).

In the housing 11 of the air conditioner 1, the first air that has passed through the two suction ports 5 for sucking the air in the air-conditioned space, the sensible heat exchanger 4, and the first vaporization filter 31 and cooled in two stages is applied to the air-conditioned space. A first outlet 71 that blows out air as supply, a second vaporization filter 32, and a second outlet 72 that blows out second air that has passed through and exchanged heat with the first air as exhaust heat are provided. Has been done. The first outlet 71 and the second outlet 72 are provided on the same side surface (left side surface in this embodiment) of the housing 11.

The air conditioner 1 includes a fan for transporting the first air and the second air, and the fan includes a first fan 81 for transporting the first air and a second fan 82 for transporting the second air. .. The shapes of the first fan 81 and the second fan 82 in FIG. 1 represent an example of the outer shell shape. The fan including the first fan 81 and the second fan 82 may be, for example, a centrifugal fan such as a sirocco fan or a propeller fan. The first fan 81 is provided in the vicinity of the first outlet 71, and the second fan 82 is provided in the vicinity of the second outlet 72. That is, when the two suction ports 5 are the most upstream ends and the first outlet 71 and the second outlet 72 are the most downstream ends as the air flow of the air conditioner 1, the first fan 81 and the second fan 82 are used. Is provided on the downstream side of the sensible heat exchanger 4 and the cooling unit 3 in the air flow direction. By providing the first fan 81 and the second fan 82 on the downstream side, these fans function as so-called suction fans and keep the air flow path in the air conditioner 1 at a negative pressure. By keeping the inside of the air flow path at a negative pressure, a configuration is adopted that promotes permeation (absorption) of water from the water supply unit 33 to the first vaporization filter 31 and the second vaporization filter 32. In this embodiment, as will be described later, a configuration is adopted that promotes the dropping of water from the water supply unit 33 to the first vaporization filter 31 and the second vaporization filter 32.

The first fan 81 and the second fan 82 share a single fan motor 8, and are fastened to shafts provided at both ends of the fan motor 8. A partition plate 83 is provided between the second fan 82 and the first fan 81 to partition the space where the second fan 82 is provided and the space where the first fan 81 is provided. The partition plate 83 can prevent the first air conveyed by the first fan 81 and the second air conveyed by the second fan 82 from being mixed.

The fan motor 8, the first fan 81, and the second fan 82 are arranged in a fan chamber partitioned by a fan casing 84. The fan chamber is partitioned by, for example, a fan casing 84 partially composed of a heat transfer suppressing member having heat insulating properties such as styrofoam. The partition plate 83 provided between the second fan 82 and the first fan 81 constitutes a part of the fan casing 84. Details of the fan casing 84 will be described later.

In the present embodiment, the fan motor 8 is arranged in the space on the second fan 82 side partitioned by the partition plate 83. More specifically, the partition plate 83 is provided between the fan motor 8 and the first fan 81. By providing the fan motor 8 on the second fan 82 side in this way, the fan motor 8 can be cooled by the second air conveyed by the second fan 82, that is, the exhaust gas. Therefore, the fan motor 8 can be efficiently cooled by utilizing the cooling heat of the second air (exhaust gas) without raising the temperature of the first air, that is, the supply air, which is conveyed by the first fan 81. Further, if the fan motor 8 is arranged in the space on the second fan 82 side partitioned by the partition plate 83, the same effect can be exhibited. Therefore, as a modification, the configuration related to the second fan 82 and the fan motor 8 are exhibited. It is also possible to adopt a configuration in which the arrangement of is exchanged.

The air conditioner 1 is provided with a suction flow path 51, a branch flow path 52, a first flow path 61, and a second flow path 62 as air flow paths. The branch flow path 52 branches the suction flow path 51 into the first flow path 61 and the second flow path 62. The suction flow path 51 starts from two suction ports 5 in the rear direction and the right direction, and communicates with the heat exchanger 4 via the branch flow path 52. The first flow path 61 is a space that communicates along the arrow representing the supply air (SA) in FIG. The second flow path 62 is a space that communicates along the arrow representing the exhaust gas (EA) in FIG. Further, the suction flow path 51 and the branch flow path 52 are common regions before air is distributed to the first flow path 61 and the second flow path 62. In other words, the air inside the suction flow path 51 and the branch flow path 52 is both the first air and the second air. The boundary between the suction flow path 51 and the branch flow path 52 in this embodiment will be described later.

The branch flow path 52 communicates with the two inlets of the microheat exchanger 4. The two inlets of the sensible heat exchanger 4 are the inlet of the first path 41 of the sensible heat exchanger 4 into which the first air flows and the inlet of the second path 42 of the sensible heat exchanger 4 into which the second air flows. including. The entrance of the first path 41 is formed on the opening surface 431 on the first entrance side. The entrance of the second path 42 is formed on the opening surface 432 on the second entrance side. The first path 41 constitutes a part of the first flow path 61. The second path 42 constitutes a part of the second flow path 62. That is, a branch flow path 52 and a sensible heat exchanger 4 are provided in this order downstream of the suction flow path 51 in the flow direction of the suction air flowing through the suction flow path 51.

The suction air flows into the inlet of either the first path 41 or the second path 42 in the sensible heat exchanger 4 in the branch flow path 52. That is, the sucked air is divided into the first air flowing into the first path 41 and the second air flowing into the second path 42 in the branch flow path 52.

A dust collecting filter 53 is provided between the two suction ports 5 and the two inlets of the sensible heat exchanger 4 (the inlet of the first path 41 and the inlet of the second path 42). .. The dust collecting filter 53 is formed of polyester or olefin fibers, and includes a filter portion that captures dust and a grid-like frame that fixes the filter portion. The dust collecting filter 53 may be formed by insert molding by placing the filter portion inside the resin mold and then pouring the resin which is the material of the frame body. The dust collecting filter 53 made of a frame made of resin is flexible and is provided so as to be curved so as to cover each of the inlets of the first path 41 and the second path 42 of the heat exchanger 4. Has been done. When the dust collecting filter 53 is provided in a curved shape, a guide portion formed by a groove or the like in which the longitudinal edge portion of the dust collecting filter 53 is aligned is provided on the inner surface of the housing 11. You may.

The dust collection filter 53 is curved as shown in FIG. 1 because the first inlet side opening surface 431 and the second inlet side opening surface 432 are provided on different end faces (side surfaces) of the heat exchanger 4. It is provided. As a result, the dust collecting filter 53 can cover the first inlet side opening surface 431 and the second inlet side opening surface 432 with one sheet. By using one dust collecting filter 53, the trouble of attaching and detaching the filter can be reduced.

Seal members 531 are provided at both ends of the dust collecting filter 53. Both ends of the dust collection filter 53 include an end on the side of the first path 41 and an end on the side of the second path 42. The end on the side of the first path 41 is in contact between the opening surface 431 on the first entrance side provided with the entrance of the first path 41 and the inner surface of the housing 11 facing the opening surface 431 on the first entrance side. It is located in a place. The end on the side of the second path 42 is located between the drain pan 34, which will be described later, and the inner surface of the housing 11 in the vicinity of the drain pan 34. The seal member 531 fills the gap between the inner surface of the housing 11 and the dust collection filter 53.

Since the sealing member 531 is provided at both ends of the dust collecting filter 53, it is possible to suppress the inflow of air into the heat exchanger 4 without passing through the dust collecting filter 53. .. By providing the dust collection filter 53, it is possible to collect dust of the suction air sucked from the suction port 5 and suppress the adhesion of dust in the distribution path through which the air in the air conditioner 1 flows.

The space between the two inlets of the heat exchanger 4 (the inlet of the first path 41 and the inlet of the second path 42) and the suction port 5 is the upstream space in the flow direction of the first air and the second air. And the space on the downstream side are separated by the dust collection filter 53. In other words, the dust collection filter 53 includes an upstream space that is a space surrounded by a housing 11 having a suction port 5 and a dust collection filter 53, a dust collection filter 53, a first inlet side opening surface 431, and a second inlet. It is partitioned into a downstream space, which is a space surrounded by the side opening surface 432. The upstream space corresponds to the suction flow path 51. The space on the downstream side corresponds to the branch flow path 52. The suction flow path 51 is a path shared by the first path 41 and the second path 42 upstream of the branch flow path 52. Therefore, the two suction ports 5 can also be shared by the first path 41 and the second path 42, and the opening area of the two suction ports 5 is increased to reduce the flow path resistance (pressure loss) in the suction air. can do. Further, in order to reduce the flow path resistance, a configuration in which two suction ports are connected may be adopted. Specifically, similarly to the dust collecting filter 53, the side surface of the housing 11 may be curved, and one suction port 5 may be formed on the curved side surface to widen the opening area. In this case, the volume of the upstream space can be minimized, and the influence of turbulence or the like that may occur in the upstream space can be minimized.

As described above, the sensible heat exchanger 4 is provided with a first path 41 through which the first air flows and a second path 42 through which the second air flows. The first path 41 constitutes a part of the first flow path 61 communicating with the first outlet 71. The second path 42 constitutes a part of the second flow path 62 communicating with the second outlet 72. The first path 41 and the second path 42 in the heat exchanger 4 are composed of a plurality of resin plates having a hollow structure, and each of these resin plates is provided in parallel. By reducing the thickness of the resin plate, the heat transfer property can be improved and the weight of the heat exchanger 4 can be reduced. The hollow structure may be composed of a metal plate.

The resin plate constituting the first path 41 and the resin plate constituting the second path 42 are laminated and provided so as to be perpendicular to the flow directions of the first air and the second air, and these resins are provided. A sensible heat exchange is performed between the first air and the second air via the plate. Since the first path 41 and the second path 42 are orthogonal to each other, a orthogonal flow is formed by the first air flowing through the first path 41 and the second air flowing through the second path 42.

In each of the resin plates constituting the first path 41 and the second path 42, a resin frame is provided between the resin plates adjacent to each other, and the resin frame reduces the distance between the resin plates. It may function as a spacer for securing. By using a resin frame for the spacer, the weight of the sensible heat exchanger 4 can be reduced. Since the spacer plays a role of regulating the air flow inside the sensible heat exchanger 4, the air flow inside the sensible heat exchanger 4 becomes uniform, and the first air and the second air become uniform. Can increase the area of heat exchange. Inside the sensible heat exchanger 4, a spacer may be used to regulate the flow of wind so that the first air and the second air exchange heat in a countercurrent relationship in some paths. By heat exchange in the countercurrent, the heat exchange efficiency in the sensible heat exchanger 4 can be improved. The thickness of the spacer for the second air may be thicker than the thickness of the spacer for the first air. That is, the width of the spacer for the second air may be larger than the width of the spacer for the first air. With such a configuration, the pressure loss with respect to the second air when flowing through the sensible heat exchanger 4 can be reduced, and the air volume of the second air can be increased more than the air volume of the first air. With such a configuration, the first air can be cooled more efficiently by the second air, and the temperature of the first air can be further cooled. In the present embodiment, the heat exchanger 4 is a plate type using a resin plate or the like, but the present invention is not limited to this, and the heat exchanger 4 may be configured such that paths made of cylinders such as a straw shape are provided side by side. good.

Each end face (side surface) of the heat exchanger 4 is provided with an inlet of the first path 41, an inlet of the second path 42, an outlet of the first path 41, and an outlet of the second path 42. The end surface (side surface) provided with the entrance of the first path 41 corresponds to the opening surface 431 on the first entrance side. The end surface (side surface) provided with the entrance of the second path 42 corresponds to the opening surface 432 on the second entrance side. The end surface (side surface) provided with the outlet of the first path 41 corresponds to the opening surface 441 on the first exit side. The end surface (side surface) provided with the outlet of the second path 42 corresponds to the opening surface 442 on the second exit side. That is, the first path 41 is formed by stacking a plurality of spaces communicating from the first inlet side opening surface 431 to the first exit side opening surface 441. Further, the second path 42 is formed by laminating a plurality of spaces communicating from the second inlet side opening surface 432 toward the second exit side opening surface 442.

A second vaporization filter 32 is provided on the upstream side of the opening surface 432 on the second inlet side in the flow direction of the second air. The second vaporization filter 32, which has a rectangular shape when viewed from the front in FIG. 1, is provided with one surface facing the second inlet side opening surface 432. A first vaporization filter 31 is provided on the downstream side of the opening surface 441 on the first outlet side in the flow direction of the first air. The first vaporization filter 31, which has a rectangular shape when viewed from the front in FIG. 1, is provided with one surface facing the first outlet side opening surface 441.

The second air separated by the branch flow path 52 passes through the second vaporization filter 32, is cooled by the second vaporization filter 32, and then is provided in the second inlet side opening surface 432. It flows into the inside of the sensible heat exchanger 4 (second path 42) from the inlet of. The first air separated by the branch flow path 52 flows into the inside of the sensible heat exchanger 4 (first path 41) from the inlet of the first path 41 provided on the opening surface 431 on the first inlet side.

The first air flowing in the first path 41 and the second air flowing in the second path 42 are heat exchanged via the sensible heat exchanger 4. The second air flowing through the second path 42 is cooled by the second vaporization filter 32, and the temperature of the second air is lower than the temperature of the suction air immediately after being sucked by the suction port 5. The temperature of the first air immediately after flowing into the inlet of the first path 41 is the same as (equivalent to) the temperature of the sucked air immediately after being sucked by the suction port 5, but the temperature of the first air is the same as that of the suction air immediately after being sucked through the sensible heat exchanger 4. It is cooled by the second air flowing through the two paths 42. Specifically, since the first air is higher than the temperature of the second air, heat is taken by the second air. As a result, the first air and the second air are in a lower temperature state than the suction air and the air outside the housing 11.

The first air flowing out from the outlet of the first path 41 is further cooled by the first vaporization filter 31. As a result, the first air is cooled in two stages. That is, the first air is used as an indirect cold heat source via the second air of the second vaporization filter 32, and is cooled by two cold heat sources using the first vaporization filter 31 as a direct cold heat source. .. That is, only the sensible heat is exchanged in the first stage, and the total heat is exchanged in the second stage. As a result, the wet-bulb temperature is lower than that of cooling by vaporization or sensible heat exchange only and cooling by sensible heat exchange from vaporization cooling. In addition, since the amount of water vaporized during total heat exchange can be reduced, an unpleasant increase in humidity can be prevented.

The first air that flows out from the outlet of the first path 41 of the sensible heat exchanger 4 (the outlet provided in the opening surface 441 on the first outlet side) and passes through the first vaporization filter 31 is more than the first vaporization filter 31. It is conveyed by the first fan 81 located on the downstream side, and is blown out as air supply (SA) from the first outlet 71 to the air-conditioned space. The first outlet 71 is provided with an outlet duct 711 having a bellows structure, for example, and the first air is blown out as supply air (SA) in the outlet direction adjusted by the outlet duct 711. It may be a thing. As a result, the space around the operator of the mobile body M can be cooled as an air-conditioned space. The first fan 81 is supposed to be located on the downstream side of the first vaporization filter 31, but the present invention is not limited to this, and the first fan 81 may be located on the upstream side of the first vaporization filter 31.

The second air flowing out from the outlet of the second path 42 of the sensible heat exchanger 4 (the outlet provided in the opening surface 442 on the second outlet side) is on the downstream side of the outlet of the second path 42 of the sensible heat exchanger 4. It is conveyed by a second fan 82 located at, and is blown out as an exhaust (EA) from the second outlet 72 to the outside of the housing 11.

The first outlet 71 and the second outlet 72 are provided on the same side surface (left side surface in this embodiment) of the housing 11. The second outlet 72 faces in the direction of the first outlet 71, and the exhaust gas (EA) blown out from the second outlet 72 is in the vicinity of the vicinity of the outlet duct 711 attached to the first outlet 71. It may be blown out. More specifically, the second outlet 72
By being provided in the front direction from the second fan 82, the second air sent from the second fan 82 is blown out in the left front direction. Further, when the outlet duct 711 is provided, it is possible to suppress an increase in the outer surface temperature of the outlet duct 711 due to direct sunlight or lighting.

By blowing out the exhaust (EA) blown out from the second outlet 72 to the vicinity of the vicinity of the blowout duct 711, the temperature (atmospheric temperature) of the ambient air of the blowout duct 711 is lowered and blown out from the blowout duct 711. It is possible to prevent the supply air (SA) from rising due to the air (outside air) outside the housing 11. In addition, it is possible to suppress an increase in the outer surface temperature of the outlet duct 711 due to direct sunlight or lighting.

The suction port 5 is provided on a side surface different from the side surface on which the first outlet 71 and the second outlet 72 are provided. As a result, it is possible to suppress the occurrence of a short circuit phenomenon in which the air blown out from the first outlet 71 and the second outlet 72 is sucked in from the suction port 5. However, in the air conditioner 1 of the present embodiment, it is not necessary to consider the ventilation efficiency, and when a short circuit phenomenon occurs on the air supply side or the exhaust side, the air having a temperature lower than the outside air is cooled again. This has the advantage that the wet-bulb temperature of the first air can be further lowered. The first outlet 71, the second outlet 72, or the first outlet 71 and the second outlet 72 may be provided on the upper surface of the housing.

As shown in the illustration of the present embodiment, on the side surface of the housing 11 where the two suction ports 5, the first outlet 71 and the second outlet 72 are not provided, a door portion configured to be openable and closable is provided. 111 is provided. The side surface on which the door portion 111 is provided is a side surface corresponding to a portion where the end portion of the first vaporization filter 31 and the end portion of the second vaporization filter 32 are adjacent to each other, and the first vaporization filter 31 and the second vaporization filter 32 are provided. This is the side closest to the filter 32. By opening (opening) the door portion 111, the inside can be accessed from the outside of the housing 11, and maintenance work such as replacement of the first vaporization filter 31 or the second vaporization filter 32 can be performed. The door portion 111 has one end other than the upward end connected to the housing 11 by a hinge, and the end portion facing the end connected by the hinge of the door portion 111 is hinged by a locking mechanism that can be opened and closed. It is preferable that the housing 11 is fixed to the housing 11 in a configuration that is fixed to the body 11. As a result, it is possible to prevent the door portion 111 from falling off at the time of opening, and it is easy to maintain the open state at the time of maintenance.

In performing the maintenance work, after opening the door portion 111, the first vaporization filter 31 and the second vaporization filter 32 can be slid horizontally to be removable, and the height of the housing 11, that is, the product The height of the door can be lowered. This makes it possible to improve maintainability.
Only one of the side surfaces of the first vaporization filter 31 and the second vaporization filter 32 is integrally molded with the resin member. This improves the maintainability of the first vaporization filter 31 and the second vaporization filter 32, and at the same time, wind leaks from the respective element portions of the first vaporization filter 31 and the second vaporization filter 32, that is, passes through the element portion. It is possible to suppress the flow of air without doing so.
The resin member integrally molded on one side surface of the first vaporization filter 31 and the second vaporization filter 32 is provided with a handle portion or a grip portion. When performing maintenance work, the operator can easily attach / detach the first vaporization filter 31 and the second vaporization filter 32 by holding the handle portion, and can improve maintainability.
The two vaporization filters including the first vaporization filter 31 and the second vaporization filter 32 may be drawn out in an intersecting relationship. With such a configuration, it is possible to standardize the parts and expect cost reduction by reducing the parts cost. Further, the first vaporization filter 31 and the second vaporization filter 32 can be extracted from the inspection port space limited according to the size of the housing 11, and the size of the housing 11, that is, the product size can be reduced. Can be done.
A holding portion for fixing these vaporization filters is provided so that the two vaporizing filters composed of the first vaporization filter 31 and the second vaporization filter 32 do not move, and the holding portion contacts a part of the door portion 111. And by pressing, the door portion 111 is pressed against each other. With such a configuration, it is possible to suppress a leak between the first air and the second air, that is, the mixing of the first air and the second air. Further, it is possible to suppress the occurrence of deviation of the vaporization filter due to vibration or the like. Further, it is possible to prevent the vaporization filter from being improperly installed when the vaporization filter is attached or detached in maintenance work or the like.

On the inner surface of the door portion 111, a restraining member 112 for suppressing the intrusion of air into the first flow path 61 without passing through the first vaporization filter 31 is provided. The restraining member 112 is formed of, for example, a sealing material, and by closing the door portion 111 (closed state), the restraining member 112 is sandwiched between the inner surface of the door portion 111 and the edge portion of the first vaporization filter 31 to provide a sealing function. It exerts and suppresses the invasion of air into the first flow path 61 without passing through the first vaporization filter 31.

The restraining member 112 is not limited to the case where the restraining member 112 is attached to the inner surface of the door portion 111, and the restraining member 112 is attached to the first vaporization filter 31 or the fastening member for fastening the first vaporization filter 31 and the second vaporization filter 32. It may be affixed. That is, the fact that the restraining member 112 is provided on the inner surface of the door portion 111 is not only when the restraining member 112 is attached to the inner surface of the door portion 111, but also when the restraining member 112 is attached to, for example, the first vaporization filter 31 or the like. Includes that 112 is affixed.

The air conditioner 1 includes a tank 12 for storing water to be supplied to the first vaporization filter 31 and the second vaporization filter 32. The tank 12 is configured as a separate body from the housing 11 that houses the first vaporization filter 31, the second vaporization filter 32, and the like. The housing 11 which is the main body of the air conditioner 1 and the tank 12 which is configured as a separate body are connected (communicated) by a supply water channel 91 and a recovery water channel 92. The water supplied from the tank 12 to the first vaporization filter 31 and the second vaporization filter 32 housed in the housing 11 flows through the supply water channel 91. The water that has not been vaporized by the first vaporization filter 31 and the second vaporization filter 32 flows through the recovery water channel 92 and is recovered in the tank 12. The supply water channel 91 and the recovery water channel 92 are composed of a hose made of soft resin or a pipe made of hard resin. When installed on the moving body M as in the present embodiment, it is preferable that the tank 12 is installed on the back surface or the feet of an operator who can easily supply and replace water. Further, it is preferable that the supply water channel 91 and the recovery water channel 92 are tied to a pillar of a head guard or the like in order to ensure visibility of the operator and prevent water leakage by being caught during operation.

As shown in FIG. 5, the supply water channel 91 is provided with a water supply pump 913 and a supply water sensor 914. When the housing 11 and the tank 12 are placed in different places and a height difference (lift) occurs between the housing 11 and the tank 12, a water supply pump 913 having a water supply capacity corresponding to the head lowers the housing 11. Water can be pumped from a tank 12 to the upper housing 11. The supply water sensor 914 is provided inside the supply water channel 91, for example, and outputs a sensor value (detection value) according to the amount of water flowing through the supply water channel 91.

As shown in FIG. 5, the recovery water channel 92 is provided with a recovery pump 923 and a recovery water sensor 924. Even when the housing 11 and the tank 12 are placed in different places and the housing 11 is above the tank 12, the recovery pump 923 reliably recovers the water accumulated in the drain pan 34. Can be done. The recovery water sensor 924 is provided, for example, inside the recovery water channel 92, and outputs a sensor value (detection value) according to the amount of water flowing in the recovery water channel 92. In the present embodiment, the supply water sensor 914 and the recovery water sensor 924 are provided, respectively, but they may be realized by either one. Further, the amount of water supplied or recovered may be estimated by detecting the torque of the water supply pump 913 or the recovery pump 923, and the supply water sensor 914 and the recovery water sensor 924 may not be provided. Alternatively, the air conditioner 1 may be configured to include only the reclaimed water sensor 924. The recovered water sensor 924 can detect the water drained from the drain pan 34 and recovered in the tank 12, and by eliminating the need for the supply water sensor 914, the number of sensors mounted on the air conditioner 1 can be reduced. It is possible to reduce costs by reducing the cost of parts.

As shown in FIG. 5, the water supply pump 913, the supply water sensor 914, the recovery pump 923, and the recovery water sensor 924 are connected to the controller 130 described later, and the controller 130 includes the supply water sensor 914, the recovery water sensor 924, and the recovery water sensor 924. Alternatively, the water supply pump 913 and the recovery pump 923 are driven based on the sensor values output from both sensors.

A part of the supply water channel 91 extending from the tank 12 is housed inside the housing 11 and communicates with the water supply unit 33 attached above the first vaporization filter 31 and the second vaporization filter 32. .. A part of the supply water channel 91 housed inside the housing 11 is provided in the upstream space (suction flow path 51) separated by the dust collection filter 53. When the air conditioner 1 is mounted on the moving body M and used outdoors, the temperature of the water in the tank 12 may be heated by direct sunlight or the like and may be higher than the outside air temperature (temperature of the sucked air). Even in such a case, the water (supply water) flowing in the supply water channel 91 located in the upstream space (suction flow path 51) is heat-exchanged with the suction air flowing in the suction flow path 51, and the water (suction flow path 51) is exchanged. The supply water) can be cooled by the suction air to improve the cooling efficiency in the air conditioner 1. For example, fins or the like are provided on the outer peripheral surface of the supply water channel 91 arranged in the upstream space, and the heat transfer efficiency is improved by increasing the heat transfer area when exchanging heat with the suction air. You may. Further, as a configuration for cooling the water in the supply water channel 91, the water supply channel 91 may be arranged so as to pass downstream of the sensible heat exchanger 4 of the second flow path 62.

The water (supply water) flowing into the water supply unit 33 is divided by the first supply water channel 911 on the first vaporization filter 31 side and the second supply water channel 912 on the second vaporization filter 32 side, and is provided in the water supply unit 33. It passes through the first water supply hole 331 and drops on the first vaporization filter 31, and passes through the second water supply hole 332 and drops on the second vaporization filter 32 (see FIG. 7). The water dropped on the first vaporization filter 31 and the second vaporization filter 32 permeates the first vaporization filter 31 and the second vaporization filter 32, respectively. At this time, since the water pressure of the pump, the weight of the water, and the inside of the first flow path 61 and the second flow path 62 are negative pressure, the water (supply water) has the first water supply hole 331 and the second water supply hole. It is sequentially dropped from 332.

The water that has permeated the first vaporization filter 31 and the second vaporization filter 32 is vaporized when the first air and the second air pass through, but depending on the amount of water supplied and the relative humidity of the environment in which the air conditioner 1 is used. , A part of the supplied water flows into the drain pan 34 located below the first vaporization filter 31 and the second vaporization filter 32 in a liquid state. The drain pan 34 is divided into two regions, for example, a region corresponding to the first vaporization filter 31 (first drain region) and a region corresponding to the second vaporization filter 32 (second drain region). By being separated, it is possible to suppress the mixing of the first air and the second air that have flowed into the drain pan 34.

The drain pan 34 and the tank 12 are communicated with each other by a recovery water channel 92, and the recovery water channel 92 communicates with the first recovery water channel 921 communicating with the first drain region and the second drain region communicating with the second drain region. Includes a recovery channel 922 (see FIG. 5). After merging the first recovery water channel 921 and the second recovery water channel 922, the first recovery water channel 921 and the second recovery water channel 922 communicate with the tank 12 via the recovery pump 923. The water (recovered water) that has flowed down to the drain pan 34 (first drain region and second drain region) is collected in the tank 12 via the recovery water channel 92 (first recovery water channel 921 and the second recovery water channel 922). As shown in FIG. 5, when the recovery pump 923 has two inlets corresponding to the first recovery channel 921 and the second recovery channel 922, the first recovery channel 921 and the second recovery channel 922 are the recovery pump 923. It may be connected to each of the water inlets and merged by the recovery pump 923.

The tank 12 and the first vaporization filter 31 and the second vaporization filter 32 are communicated with each other by the supply water channel 91 and the recovery water channel 92. Therefore, a circulation circuit is formed in which water is recovered (returned) to the tank 12 via the tank 12, the supply water channel 91, the water supply section 33, the first vaporization filter 31, the second vaporization filter 32, the drain pan 34, and the recovery water channel 92. Will be done. By the circulation circuit, the water not vaporized by the first vaporization filter 31 and the second vaporization filter 32 is efficiently recovered in the tank 12, the amount of water remaining inside the housing 11 is reduced, and the casing is made. The degree of hygiene in the body 11 can be improved.

FIG. 3 is a schematic plan view illustrating an arrangement mode of the heat exchanger 4. In FIG. 3, a partial configuration of the dust collecting filter 53, the water supply unit 33, and the like is omitted. The sensible heat exchanger 4 has a rectangular shape when viewed from the front, and has, for example, the appearance of a rectangular parallelepiped. The first path 41 and the second path 42 provided in the heat exchanger 4 are orthogonal to each other, and in the present embodiment, the crossing angle of the first path 41 and the second path 42 is, for example, 90 °. be.

The sensible heat exchanger 4 has a first inlet side opening surface 431, a second inlet side opening surface 432, a first outlet side opening surface 441, and a second outlet side opening surface 442 as end faces (side surfaces), and they are adjacent to each other. The angle with respect to the end face (side surface) of is, for example, 90 °. The first inlet side opening surface 431, the second inlet side opening surface 432, the first outlet side opening surface 441, and the second outlet side opening surface 442 are in the circumferential direction when the sensible heat exchanger 4 is viewed from the front. It is provided in this order. That is, the first inlet side opening surface 431 is adjacent to the second inlet side opening surface 432, the second inlet side opening surface 432 is adjacent to the first outlet side opening surface 441, and the first outlet side opening surface 441 is the second. The second exit side opening surface 442 is adjacent to the outlet side opening surface 442, and the second exit side opening surface 442 is adjacent to the first inlet side opening surface 431.

The heat exchanger 4 is housed in the housing 11 so that the inner surface of the housing 11 and the end surface of the heat exchanger 4 facing the inner surface form an acute angle. For the following description, the angle formed by the inner surface on the front side of the housing 11 and the opening surface 441 on the first outlet side is defined as an angle θ. For example, the angle θ forms an acute angle greater than 10 degrees and less than 50 degrees. The lower limit value of 10 degrees of the angle θ may be set in order to secure the path diameter of the first flow path 61. Further, the upper limit of the angle θ may be determined by the arrangement of the fan motor 8 and the electric unit 13 provided downstream of the second path 42 and the arrangement of the partition plate 83. Specifically, the angle θ may be determined so that the left end portion of the first outlet side opening surface 441 and the right end portion of the partition plate 83 can be connected to each other. Further, the left end portion of the first outlet side opening surface 441 is ahead of at least one rear end portion of the fan motor 8 and the electric unit 13 so that the second air can easily flow through the fan motor 8 and the electric unit 13. It is preferable to adopt a configuration in which the right end portion of the partition plate 83 is arranged and the upper limit value of the angle θ is set. As a result, the second air easily flows into the fan motor 8 and the electric unit 13, and the cooling efficiency of the fan motor 8 and the electric unit 13 can be improved. The sensible heat exchanger 4 has an angle θ corresponding to the acute angle from a parallel state (posture position) in which the angle formed by the inner surface of the housing 11 and the end surface of the sensible heat exchanger 4 facing the inner surface is 0 degrees. It is housed in the housing 11 in a state of being rotated only. As a result, for example, since the housing 11 is a rectangular parallelepiped and the heat exchanger 4 is a cube, the inner surface on the rear side of the housing 11 that opposes the first inlet side opening surface 431 and the first inlet side opening surface 431. The angle between the above and the inner surface on the front side of the housing 11 that opposes the opening surface 441 on the first outlet side and the opening surface 441 on the first outlet side are equal values. By housing the sensible heat exchanger 4 in the housing 11 in a state of being rotated at a predetermined rotation angle in this way, the area where the heat exchange is possible in the sensible heat exchanger 4 with respect to the size of the housing 11 ( A large heat exchange area) can be secured. Further, by setting the θ to a range of more than 10 degrees and less than 50 degrees and an angle not to be 45 degrees, the length of the housing 11 in the front-back and left-right directions can be made smaller than that of installing at 45 degrees. .. As a result, the length of the housing 11 in the front, rear, left and right sides with respect to the heat exchange area can be suppressed, so that the size can be reduced. Similarly, since the first vaporization filter 31 and the second vaporization filter 32 are provided along the second inlet side opening surface 432 and the first outlet side opening surface 441 of the heat exchanger 4, the cooling unit 3 is provided in the left-right direction. The length of the door portion 111 can be shortened, and the area of the door portion 111 provided for maintenance can also be reduced.

By rotating and arranging the housing 11 with an angle θ corresponding to a predetermined acute angle, the first outlet side opening surface 441 and the front inner surface of the housing 11 facing the first outlet side opening surface 441 can be arranged. The inter-plane distance can be gradually increased toward the downstream side of the first air. Specifically, as shown in FIG. 3, the inter-plane distance gradually increases as it approaches the first outlet 71 (d3> d2> d1). That is, the distance between the first outlet side opening surface 441 on the most downstream side and the inner surface of the housing 11 can be maximized. As a result, it is possible to reduce the flow path resistance (pressure loss) when the air flows out from the first air from the opening surface 441 on the first outlet side. Incidentally, the distance between the second entrance side opening surface 432 and the inner surface on the right side of the housing 11 facing the second entrance side opening surface 432 becomes smaller as the distance from the first exit side opening surface 441 increases (k3> k2). > K1).

The first vaporization filter 31 facing the first outlet side opening surface 441 and the second vaporization filter 32 facing the second inlet side opening surface 432 are fastened to a casing covering the upper part of the drain pan 34 provided below. It is arranged so as to be L-shaped. In this case, the casing covering the upper part of the drain pan 34 functions as a fastening member for fastening the first vaporization filter 31 and the second vaporization filter 32. The angle (β) formed by the first vaporization filter 31 and the second vaporization filter 32 bent and arranged in an L shape is equal to or larger than the intersection angle (α) of the first path 41 and the second path 42. For example, it is 60 to 120 degrees. Further, for example, when the relationship between the angle (β) and the angle (α) is expressed by an equation in consideration of the case where the heat exchanger 4 is a rhombus, it is preferable that β = α ± 30 (degrees). By bending the first vaporization filter 31 and the second vaporization filter 32 into an L shape, the inside of the L shape formed from the end faces of each of the first vaporization filter 31 and the second vaporization filter 32 is sensible heat exchanged. These filters can be placed along the corners of the vessel 4. As a result, the storage capacity of the first vaporization filter 31 and the second vaporization filter 32 can be improved, and the size of the housing 11 can be reduced. In FIG. 3, the length of the first vaporization filter 31 is slightly shorter than the length of the first outlet side opening surface 441 and the first vaporization filter 31 due to miniaturization. However, the length of the first vaporization filter 31 may be changed as appropriate. As an example, it is preferable that the lengths of the first outlet side opening surface 441 and the first vaporization filter 31 are determined so that the cross-sectional areas of the flow paths are about the same. As a result, the pressure loss due to the change in the cross-sectional area of the flow path can be reduced. Further, a wall surface (a wall surface) defining a flow path between the first outlet side opening surface 441 and the first vaporization filter 31 so that the first air passing through the first outlet side opening surface 441 passes through the first vaporization filter 31. It is preferable that a seal member) is installed. This wall surface may be formed on the casing of the first vaporization filter 31 or may be formed on the fixing member of the visible heat exchanger 4. The second vaporization filter 32 may be appropriately changed in the same manner as the first vaporization filter 31. As for the lengths of the opening surface 432 on the second inlet side and the second vaporization filter 32, the length of the second vaporization filter 32 is slightly shorter due to miniaturization. However, the length of the second vaporization filter 32 may be changed as appropriate. As an example, it is preferable that the lengths of the second outlet side opening surface 442 and the second vaporization filter 32 are determined so that the cross-sectional areas of the flow paths are about the same. As a result, the pressure loss due to the change in the cross-sectional area of the flow path can be reduced. Further, a wall surface defining a flow path is provided between the second outlet side opening surface 442 and the second vaporization filter 32 so that the second air passing through the second outlet side opening surface 442 passes through the second vaporization filter 32. It is preferably formed.

FIG. 4 is an explanatory diagram regarding cooling of the electric unit 13 (board 131). The fan motor 8, the first fan 81, and the second fan 82 are partially partitioned by a fan casing 84 composed of a heat transfer suppressing member having low thermal conductivity (having heat insulating properties) such as styrofoam. Is placed in. In FIGS. 1 and 4, the fan chamber is divided into a first flow path 61 and a second flow path 62 by a partition plate 83 forming a part of the fan casing 84, and is conveyed by the first fan 81. The first air to be generated and the second air conveyed by the second fan 82 are prevented from being mixed.

A fan motor 8 and an electric unit 13 are provided in a fan chamber on the side of the second fan 82, and the fan motor 8 and the electric unit 13 are cooled by the second air flowing out from the sensible heat exchanger 4. .. In FIG. 4, the details of the flow path structure of the fan chamber of the second fan 82 and the arrangement of the heat insulating material are partially omitted. As an example, it is possible to adopt various configurations such as installing a rectifying plate having a honeycomb structure for rectifying the second air and a desiccant for dehumidifying.

The electric unit 13 has a substrate 131 on which a controller 130 for controlling the air conditioner 1 is mounted, a heat transfer promoting member 132 provided on the back surface of the mounting surface of the substrate 131, and a heat transfer promoting member 132. Includes sealing plate 133. That is, the heat transfer promoting member 132 is provided between the substrate 131 and the sealing plate 133, and a laminated structure is formed by the substrate 131, the heat transfer promoting member 132, and the sealing plate 133. The heat transfer promoting member 132 is, for example, a heat transfer sheet or a heat transfer paste molded from a heat transfer material having a high thermal conductivity and having an insulating property, which is highly filled with a high heat transfer filler. The sealing plate 133 is a metal plate having high thermal conductivity such as copper or aluminum, and may be a part of the exterior of the electric unit 13 forming a box body, for example. On the mounting surface of the substrate 131, semiconductor chips constituting the controller 130 and electric components such as coils and capacitors are mounted, and these electric components and the like generate heat when a current flows. That is, the substrate 131 serves as a heat source, and the heat generated in the substrate 131 passes from the sealing plate 133 to the side of the second fan 82 via the heat transfer promoting member 132 and the sealing plate 133 forming the laminated structure. Heat is dissipated to the internal space of the fan room. The surface of the sealing plate 133 on the side of the fan casing 84 may be provided with a portion for increasing the heat dissipation area, such as a fin, a pin, or a heat sink.

A through hole 841 is formed toward the second flow path 62 at the portion of the fan casing 84 provided at the place where the electric unit 13 is arranged. The portion of the fan casing 84 is formed of, for example, a plate-shaped styrofoam or the like, and a through hole 841 is formed. The sealing plate 133 of the electric unit 13 seals the through hole 841 of the fan casing 84 from the side of the substrate 131.

The electric unit 13 is arranged so as to be isolated from the fan chamber of the second fan 82, and the through hole 841 of the fan casing 84 is sealed by the sealing plate 133 of the electric unit 13, so that the electric unit 13 is concerned. It is possible to prevent the substrate 131 contained in the second air from coming into direct contact with the second air, and to prevent the influence of the water vapor (humidity) contained in the second air on the substrate 131. Then, heat can be exchanged between the substrate 131 and the second air via the sealing plate 133 exposed from the through hole 841 of the fan casing 84, and the substrate 131 can be cooled by the second air. The sealing plate 133 may be provided with heat radiation fins or heat radiation pins protruding from the through hole 841 of the fan casing 84 toward the inside of the fan chamber of the second fan 82. The heat transfer area of the second fan 82 with the second air in the fan chamber can be increased by the heat radiating fins or the like projecting from one surface of the sealing plate 133, and the heat transfer efficiency can be improved. Since the heat transfer promoting member 132 made of a heat radiating material or the like is provided between the substrate 131 and the sealing plate 133, the heat transfer efficiency between the substrate 131 and the sealing plate 133 (second air) is improved. The second air can be used to cool the substrate 131 more efficiently. Further, the electric unit 13 does not have a heat transfer suppressing member on the second flow path 62 side, and may be made of a sealing plate 133 or a heat radiating material. As a result, the area where the second air and the electric unit 13 can exchange heat can be increased, and the cooling efficiency can be improved.

A part of the fan casing 84 forming the fan chamber of the second fan 82 may be formed by the inner surface of the housing 11 on the side where the second fan 82 is housed. By forming a part of the fan casing 84 on the inner surface of the housing 11, the inner surface of the housing 11 is cooled by the second air, and the temperature rise of the outer surface of the housing 11 due to the influence of the outside air is alleviated. can do. Further, by arranging the second fan 82 in close contact with the inner surface of the housing 11, the inner surface of the housing 11 may constitute one surface of the second fan 82. As a result, the flow rate of the second air at the installation position of the second fan 82 is increased, the inner surface of the housing 11 is positively cooled by the second air, and the temperature of the outer surface of the housing 11 rises due to the influence of the outside air. You can relax what you do.

The fan casing 84, which forms the fan chamber on the side of the first fan 81, is made of a heat transfer suppressing member having a low thermal conductivity (having heat insulating properties) such as styrofoam. As a result, the influence of the outside air on the first air passing through the fan chamber (first flow path 61) of the first fan 81 can be reduced, and the temperature of the first air can be suppressed from rising. The outer shell of the first fan 81 may have a shape that is angled off according to the shape of the portion of the fan casing 84 that communicates with the outlet of the first path 41 of the heat exchanger 4.

FIG. 5 is an explanatory diagram regarding water supply from the tank 12. The tank 12 and the first vaporization filter 31 and the second vaporization filter 32 are communicated with each other by the supply water channel 91 and the recovery water channel 92. Water flows in the order of the tank 12, the supply water channel 91, the water supply section 33, the first vaporization filter 31, the second vaporization filter 32, the drain pan 34, and the recovery water channel 92, and a circulation circuit in which the water is recovered is formed in the tank 12.

The supply water channel 91 is connected to a water supply unit 33 attached to the upper part of the first vaporization filter 31 and the second vaporization filter 32. The water supply unit 33 includes a first water supply region 991 located above the first vaporization filter 31 and a second water supply region 992 located above the second vaporization filter 32.

The water supply unit 33 has a dish-like shape with an opening at the top, and the first supply water channel 911 through which the water supplied from the tank 12 flows through ribs or grooves formed on the inner surface of the dish-shaped water supply unit 33. And a second supply channel 912 is formed. The first supply channel 911 and the second supply channel 912 form a part of the supply channel 91. The first supply water channel 911 is included in the first water supply area 991, and the second supply water channel 912 is included in the second water supply area 992 (FIG. 7). The water flowing into the water supply unit 33 is divided by the first supply water channel 911 and the second supply water channel 912.

The water flowing through the first supply water channel 911 passes through the first water supply hole 331 provided in the first supply water channel 911 and drops onto the first vaporization filter 31. The water flowing through the second supply water channel 912 passes through the second water supply hole 332 provided in the second supply water channel 912 and drops onto the second vaporization filter 32. The first fan 81 is provided downstream of the first vaporization filter 31 in the flow direction of the first air, and similarly, the second fan 82 is downstream of the second vaporization filter 32 in the flow direction of the second air. It is provided. Therefore, since the first vaporization filter 31 and the second vaporization filter 32 are in a negative pressure state, it is possible to promote the dropping and permeation of water into the first vaporization filter 31 and the second vaporization filter 32. .. The water (supply water) dropped on the first vaporization filter 31 and the second vaporization filter 32 permeates into the first vaporization filter 31 and the second vaporization filter 32 and is vaporized, and the first vaporization filter 31 and the second vaporization filter 32 are vaporized. It will be mixed as water vapor in the first air and the second air passing through. Depending on the relative humidity of the environment in which the air conditioner 1 is used and the amount of water supplied, a part of the supplied water is in a liquid state without vaporization, and is below the first vaporization filter 31 and the second vaporization filter 32. It flows into the located drain pan 34.

The drain pan 34 is divided into two regions, for example, a region corresponding to the first vaporization filter 31 (first drain region) and a region corresponding to the second vaporization filter 32 (second drain region). The first recovery channel 921 communicates with the 1 drain region, and the second recovery channel 922 communicates with the second drain region. The first recovery channel 921 and the second recovery channel 922 form a part of the recovery channel 92. After the first recovery water channel 921 and the second recovery water channel 922 are merged, they communicate with the tank 12 via the recovery pump 923. As a result, the water that has flowed down to the drain pan 34 (water that has not been vaporized by the first vaporization filter 31 and the second vaporization filter 32) passes through the recovery water channel 92 (the first recovery water channel 921 and the second recovery water channel 922). , Collected in tank 12. In the above example, the connection point between the first drain region and the first recovery channel 921, and the connection point between the second drain region and the second recovery channel 922 are adjacent to each other, or drainage is performed even if the inclination of the moving body M changes. It is preferable that the first drain region and the second drain region are provided with the same shape and inclination so that the capacity does not change. In yet another example, the drain pan 34 is not divided into two regions, a first drain region and a second drain region, and the first recovery channel 921 and the second recovery channel 922 may be one recovery channel. As a result, it is possible to reduce a decrease in the drainage capacity of the recovery pump 923 due to the recovery pump 923 sucking air from either the first recovery water channel 921 or the second recovery water channel 922. That is, the water inside the air conditioner 1 can be sufficiently drained and the generation of slime can be suppressed.

The supply water channel 91 is provided with a supply water sensor 914, and the recovery water channel 92 is provided with a recovery water sensor 924. The supply water sensor 914 and the recovery water sensor 924 include, for example, a water wheel portion that is rotated by water flowing through the supply water channel 91 and the recovery water channel 92, and water flowing through the supply water channel 91 and the recovery water channel 92 according to the rotation of the water wheel unit. The sensor value (detection value) related to the presence or absence of water or the amount of water (volume flow rate) is output.

The supply water sensor 914 and the recovery water sensor 924 are communicably connected to the controller 130 (board 131), and the controller 130 is a supply water channel based on the sensor values output from the supply water sensor 914 and the recovery water sensor 924. It is possible to acquire data regarding the presence or absence of water flowing in the 91 and the recovery water channel 92, or the amount of water (volume flow rate). The controller 130 is composed of a microcomputer including a storage unit such as a memory and a control unit such as an MPU, for example.

The controller 130 is further communicably connected to the water supply pump 913 and the recovery pump 923, and for example, by transmitting a drive signal, drive control such as driving and stopping of the water supply pump 913 and the recovery pump 923 is performed. The controller 130 is supposed to acquire data such as the presence or absence of water flowing in the supply water channel 91 and the recovery water channel 92 based on the supply water sensor 914 and the recovery water sensor 924, but the controller 130 is not limited to this. The controller 130 acquires, for example, the current value (motor current value) of the motor included in the water supply pump 913 and the recovery pump 923 by using a shunt resistance or the like, and based on the motor current value or the like, the supply water channel 91 and the recovery water channel 92. It may be used to determine the presence or absence of water flowing in the water. When there is no water flowing in the supply water channel 91 and the recovery water channel 92, the motors of the water supply pump 913 and the recovery pump 923 will idle, the torque applied to the motors will be reduced, and the motor current value will also be reduced. Therefore, a predetermined threshold value is set for the motor current value, and when the threshold value is equal to or less than the predetermined threshold value, the controller 130 can determine that there is no water flowing in the supply water channel 91 and the recovery water channel 92.

The water supply pump 913, the supply water sensor 914, the recovery pump 923, and the recovery water sensor 924 arranged in the supply water channel 91 and the recovery water channel 92 are all housed in the housing 11. That is, the tank 12 is only communicated with the supply water channel 91 and the recovery water channel 92, and is not equipped with electrical parts such as the water supply pump 913, the supply water sensor 914, the recovery pump 923, and the recovery water sensor 924. As a result, the structure and configuration of the tank 12 can be simplified, and the degree of freedom in mounting the tank 12 which is configured as a separate body from the housing 11 can be improved.

FIG. 6 is an explanatory diagram relating to the drive of the pumps (water supply pump 913, recovery pump 923). The controller 130 drives the water supply pump 913 and the recovery pump 923 at different time zones for driving the water supply pump 913 and the recovery pump 923. The controller 130 periodically drives the water supply pump 913 and the recovery pump 923. As a result, the water supply pump 913 and the recovery pump 923 perform intermittent operation in which the drive state and the stop state are periodically repeated.

The controller 130 drives the water supply pump 913 before the recovery pump 923 when the operation of the air conditioner 1 is started by the operation of the operator of the air conditioner 1, for example. That is, a predetermined delay time is provided between the drive start time of the water supply pump 913 and the drive start time of the recovery pump 923. The start of operation of the air conditioner 1 may be linked to the start of the moving body M. The delay time may be, for example, a variable time until the amount of water supplied from the water supply sensor 914 exceeds a predetermined amount. Further, the delay time may be a predetermined fixed time.

When the controller 130 acquires, for example, a sensor value indicating that water is flowing in the recovery water channel 92 from the recovery water sensor 924, the controller 130 stops driving the water supply pump 913. The fact that water (recovered water) flows in the recovery water channel 92 indicates that the water that has not been vaporized by the first vaporization filter 31 or the second vaporization filter 32 is flowing down to the drain pan 34.
Therefore, when a sensor value indicating that water is flowing in the recovery water channel 92 is output from the recovery water sensor 924, the drive of the water supply pump 913 is stopped, so that the first vaporization filter 31 and the second vaporization filter 32 are used. It is possible to suppress the excessive supply of water (supply water).

When the air conditioner is mounted on a moving body such as a forklift, the power on / off of the main body of the air conditioner is performed in conjunction with the on / off of the key switch of the engine of the forklift. good. That is, the power of the air conditioner may be turned on by turning on the engine of the forklift, and the power of the air conditioner may be turned off by turning off the engine of the forklift. The air conditioner was turned off after the tank was determined to be empty in the previous operation, and at the first water supply timing after that, that is, at the first water supply timing, the controller 130 supplies more water than the other water supply timings. The water supply pump 913 may be driven for a long time to supply water to perform the initial water supply operation. By adopting such a control mode, when the tank is empty, it is used in a blown state, so that it is possible to suppress excessive drying such as the vaporization filter being completely dried. By performing the initial water supply operation only after the tank is determined to be empty in the previous operation without always executing it when the power of the air conditioner is turned on, the drive time of the water supply pump 913 becomes long. This can be suppressed and the aged deterioration of the water supply pump 913 due to being driven for a long time can be alleviated.

When excessive water is supplied to the first vaporization filter 31 and the second vaporization filter 32, the apparent heat exchange between the first air and the second air passing through these filters and the water is promoted, and the water is promoted. There is concern that the amount of vaporization will decrease. On the other hand, as described above, the drive of the water supply pump 913 can be stopped to optimize the water supply amount, and the water can be vaporized efficiently.

The controller 130 was measured by using a thermocouple provided in contact with the surface of the second vaporization filter 32 when driving the water supply pump 913 to supply water to the first vaporization filter 31 and the second vaporization filter 32. The drive control of the water supply pump 913 may be performed based on the wet ball temperature of the outside air. For example, a thermocouple is provided in contact with the surface of the second vaporization filter 32 on the upstream side of the second air, and the wet-bulb temperature and the dry-bulb temperature of the outside air can be measured using the thermocouple. can. The controller 130 may derive a vaporizable amount based on the difference between the wet-bulb temperature and the dry-bulb temperature, predict the water supply timing according to the derived vaporizable amount, and supply water. By adopting such a control mode, it is possible to reduce the amount of unnecessary water supply, reduce the operating time of the water supply pump 913 or the recovery pump 923, and alleviate the deterioration over time due to long-term driving. .. Alternatively, a thermocouple may be provided after the first vaporization filter 31 and the second vaporization filter 32, and water may be supplied only to any of the vaporization filters whose temperature has been confirmed to rise by monitoring them individually. .. It is possible to reduce the amount of unnecessary water supply, reduce the operating time of the water supply pump 913 or the recovery pump 923, and alleviate the deterioration over time due to long-term driving.

After stopping the drive of the water supply pump 913, the controller 130 stops the recovery pump 923 at a time when the drive time of the recovery pump 923 is longer than the drive time of the water supply pump 913. That is, the controller 130 controls the drive of the water supply pump 913 and the recovery pump 923 by making the drive time (P2) of the recovery pump 923 longer than the drive time (P1) of the water supply pump 913 (P1 <P2). By driving the recovery pump 923 longer than the water supply pump 913, the water staying in the drain pan 34 can be reliably recovered, the amount of water remaining inside the housing 11 can be reduced, and the hygiene level inside the housing 11 can be improved. Can be improved.

The controller 130 stops driving the recovery pump 923 and then starts driving the water supply pump 913. With this start, the drive of the water supply pump 913 and the recovery pump 923 in the next cycle is started. As a result, intermittent operation is performed by the water supply pump 913 and the recovery pump 923, and periodic drive control by the controller 130 is continued for the water supply pump 913 and the recovery pump 923. Various configurations can be adopted for this control. As an example, the drive time (P1) of the water supply pump 913 may be configured to be executed for a predetermined time regardless of the output timing of the recovery water sensor 924. As a result, it is possible to avoid stopping the water supply pump 913 by detecting the output of the recovered water sensor 924 without sufficiently supplying water. Specifically, the recovery water sensor 924 detects the supply water that flows down along the surfaces of the first vaporization filter 31 and the second vaporization filter 32 in the dry state, and the water supply pump 913 is stopped in a state where sufficient water supply cannot be performed. You can avoid that. In particular, it is effective at the first drive timing of the water supply pump 913 at the time of starting. That is, it is possible to set a drive time that enables necessary and sufficient water supply only at the first drive timing of the water supply pump 913 at the time of start-up. In addition, since the recovery pump 923 is configured to actively recover water from the inside of the air conditioner 1, sufficient cooling effect and drainage effect are realized even in a configuration in which intermittent operation is performed for a predetermined predetermined time. It is also possible.

FIG. 7 is a schematic perspective view illustrating one configuration of the cooling unit 3. The cooling unit 3 is housed in the housing 11 so as to be biased toward the side surface where the suction port 5 is provided. The cooling unit 3 includes a first vaporization filter 31, a second vaporization filter 32, a water supply unit 33, and a drain pan 34.

A water supply unit 33 is provided above the first vaporization filter 31 and the second vaporization filter 32, and a drain pan 34 is provided below the first vaporization filter 31 and the second vaporization filter 32. That is, the first vaporization filter 31 and the second vaporization filter 32 are sandwiched between the water supply unit 33 and the drain pan 34 in the vertical direction.

The drain pan 34 is made of, for example, resin or metal, and has a dish shape having an opening surface above. The drain pan 34 is L-shaped and bent when viewed from the front. The first vaporization filter 31 and the second vaporization filter 32 are placed in the regions corresponding to the respective sides constituting the L-shape. The first vaporization filter 31 and the second vaporization filter 32 are fastened to the drain pan 34, and the drain pan 34 functions as a fastening member for fastening the first vaporization filter 31 and the second vaporization filter 32.

The drain pan 34 is divided into two regions, for example, a region corresponding to the first vaporization filter 31 (first drain region) and a region corresponding to the second vaporization filter 32 (second drain region). The first drain region is provided with a hole for communicating with the first recovery channel 921. The second drain region is provided with a hole for communicating with the second recovery channel 922.

The first vaporization filter 31 and the second vaporization filter 32 include a rectangular filter element, and the filter element is formed of, for example, rayon polyester, a non-woven fabric, or the like. The first vaporization filter 31 and the second vaporization filter 32 have water absorption, and the water supplied from the tank 12 (supply water) permeates the entire surface of the first vaporization filter 31 and the second vaporization filter 32 (filter element). By doing so, the vaporization of the water is promoted.

The first vaporization filter 31 and the second vaporization filter 32 are placed on the L-shaped drain pan 34, and are bent and arranged in an L-shape by being fastened to the drain pan 34. The angle between the first vaporization filter 31 and the second vaporization filter 32 configured in an L shape is, for example, 60 to 120 degrees. By bending the first vaporization filter 31 and the second vaporization filter 32 into an L shape in this way, the inside of the L shape is directed toward the corner portion of the sensible heat exchanger 4 having a rectangular shape. The first vaporization filter 31 and the second vaporization filter 32 can be arranged along the inside of the L-shape, and the storage of these filters and the like can be improved and the housing 11 can be downsized.

The water supply unit 33 is made of resin, for example, and has a dish shape with an upper opening. Like the drain pan 34, the water supply unit 33 is L-shaped and bent when viewed from the front. A pipe portion 335 connected to the supply water channel 91 is projected from the water supply unit 33, and water (supply water) that has passed through the pipe portion 335 flows into the inside of the water supply unit 33. A groove formed by a plurality of ribs is provided on the inner surface of the dish-shaped water supply portion 33, and the supply water flows along the groove.

The water (supply water) that has passed through the pipe portion 335 is divided by a groove that branches into two, the flow path by one groove corresponds to the first supply water channel 911, and the flow path by the other groove is the second supply water channel. Corresponds to 912. The first supply water channel 911 communicates with the first vaporization filter 31, and the second supply water channel 912 communicates with the second vaporization filter 32. The first supply channel 911 and the second supply channel 912, which are branched into two from the pipe portion 335 connected to the supply channel 91, are extended with a certain width, and then the first vaporization filter 31 and the second vaporization filter. It forms a T-shape with its width widening along the longitudinal direction of each of the 32.

In the first supply channel 911 and the second supply channel 912, the upper side portion (region) in the T-shape, that is, the respective portion (region) along the longitudinal direction of the first vaporization filter 31 and the second vaporization filter 32, respectively. Is provided with a plurality of first water supply holes 331 and second water supply holes 332. The plurality of first water supply holes 331 in the first supply water channel 911 are provided on the side of the first outlet side opening surface 441 facing the first vaporization filter 31, that is, the first air passes through the first vaporization filter 31. It is installed on the upstream side when doing so. The plurality of second water supply holes 332 in the second supply water channel 912 are provided on the opposite side of the second inlet side opening surface 432 facing the second vaporization filter 32, that is, the second air is introduced into the second vaporization filter 32. It is installed on the upstream side when passing.

By providing the first water supply hole 331 and the second water supply hole 332 provided in the water supply unit 33 on the upstream side in the flow direction of the air (first air, second air) in this way, the first vaporization filter 31 and The density distribution of the water that has permeated the second vaporization filter 32 can be biased to the upstream side. As a result, the vaporization of water in the first vaporization filter 31 and the second vaporization filter 32 can be promoted, and the cooling efficiency can be improved. Further, in the state where the water permeating the first vaporization filter 31 and the second vaporization filter 32 is in a liquid state, it is possible to suppress the liquid splash phenomenon that flows out together with the first air and the second air.

A hydrophilic intervening member may be provided between the first water supply hole 331 and the first vaporization filter 31. Similarly, a hydrophilic intervening member may be provided between the second water supply hole 332 and the second vaporization filter 32. By providing the intervening member, the water supplied from the first water supply hole 331 to the first vaporization filter 31 can be more uniformly supplied, that is, dropped. Similarly, the water supplied from the second water supply hole 332 to the second vaporization filter 32 can be more uniformly supplied, that is, dropped. With such a configuration, water can be efficiently supplied with a smaller amount of water supply, so that the operating time of the water supply pump 913 and the recovery pump 923 can be reduced.

The cooling unit 3 is configured in an L shape, including the first vaporization filter 31 and the second vaporization filter 32. As a result, the storability when the cooling unit 3 is stored in the housing 11 can be improved, and the size of the housing 11 can be reduced.

FIG. 8 is a schematic side view illustrating an embodiment in which the air conditioner 1 is placed on the moving body M. The air conditioner 1 including the housing 11 in which the cooling unit 3 and the like are housed and the tank 12 for storing the water supplied to the cooling unit 3 is mounted on a vehicle (moving body M) such as a forklift. As the moving body M, various vehicles such as a golf cart, a small excavator car, a turret, and a trike can be considered in addition to the forklift. In this case, by taking the electric power from the vehicle side, the air conditioner 1 can be started at the same time as the vehicle is started. In addition, the reduction in power supply can be shared with the vehicle.

The housing 11 is placed, for example, on the upper surface (head guard) of a forklift. The tank 12 is placed in a place below the place where the housing 11 is placed, such as a support column that supports the rear surface portion (balance weight) or the top surface (head guard) of the forklift. By placing the tank 12 below the housing 11, the water in the drain pan 34 stored in the housing 11 can be reliably collected in the tank 12 by using gravity (the weight of the water itself). It is possible to reduce the amount of water remaining inside the housing 11 and improve the hygiene level inside the housing 11.

All the electric parts such as the water supply pump 913, the supply water sensor 914, the recovery pump 923, and the recovery water sensor 924 arranged in the supply water channel 91 and the recovery water channel 92 are housed in the housing 11, and the tank 12 contains. These electrical components are not mounted. Therefore, the structure and configuration of the tank 12 can be simplified and reduced in weight, and the degree of freedom in mounting the tank 12 can be improved when the air conditioner 1 is mounted on the moving body M such as a forklift.

An outlet duct 711 capable of changing (adjusting) the blowing direction is attached to the first outlet 71 provided in the housing 11, and the outlet duct 711 has a top surface on which the housing 11 is placed. It is extended toward the bottom of. Therefore, the second air outlet 72 that blows out the second air (exhaust) is located at the upper part of the top surface, and the first air (air) is placed in the driver's seat of the forklift, which is the air-conditioned space, via the blow duct 711. Can be blown out, and the forklift operator located in the driver's seat can be efficiently cooled.

The blowing direction of the second outlet 72 for blowing out the second air (exhaust) is in the vicinity of the vicinity of the blowing duct 711, whereby the second air blown from the second blowing outlet 72 causes the ambient air of the blowing duct 711. The temperature (atmospheric temperature) can be lowered. As a result, it is possible to prevent the first air (supply air) blown out from the blowout duct 711 from rising due to the outside air (air outside the housing 11).

The tank 12 and the housing 11 (cooling unit 3) are communicated with each other by a supply water channel 91 and a recovery water channel 92. For example, the supply channel 91 and the recovery channel 92, which are made of a hose made of soft resin or the like, may be arranged along a support column that supports the top surface. In arranging the supply water channel 91 and the recovery water channel 92 along the support column, the supply water channel 91 and the recovery water channel 92 may be fastened to the support column by, for example, a fastening member such as a tie wrap. As a result, it is possible to prevent the supply water channel 91 and the recovery water channel 92 from coming off the tank 12 or the housing 11 due to the vibration generated by the traveling of the forklift.

As shown in FIG. 3, an example in which the first vaporization filter 31 and the second vaporization filter 32 are provided in an L shape has been described, but the present invention is not limited to this. Specifically, the first vaporization filter 31 may allow the first air flowing through the first flow path 61 to pass through, and the second vaporization filter 32 may allow the second air flowing through the second flow path 62 to pass through. Just do it. For example, referring to FIG. 1, the first vaporization filter 31 is on the first outlet side in the first flow path 61 formed between the left end portion of the first outlet side opening surface 441 and the front side surface of the housing 11. The first vaporization filter 31 may be formed so as to cover the opening surface 441. Similarly, the second vaporization filter 32 covers the second inlet side opening surface 432 in the second flow path 62 formed between the right end portion of the second inlet side opening surface 432 and the front side surface of the housing 11. The second vaporization filter 32 may be formed as described above.

(Embodiment 2)
FIG. 9 is a schematic front view illustrating one configuration of the air conditioner 1 according to the second embodiment. FIG. 10 is a schematic side view illustrating one configuration of the air conditioner 1. FIG. 10 schematically shows the arrangement relationship of the air conditioner 1 in a state seen from the front direction. Note that FIG. 10 schematically shows a cross section cut along the line BB in FIG. 2 from the front direction. The air conditioner 1 according to the second embodiment has a housing 11, a tank 12, an electric unit 13, a cooling unit 3, a microheat exchanger 4, a fan motor 8, a first fan 81, and a second fan, as in the first embodiment. 82, a water supply pump 913 and a recovery pump 923 are provided, and a first path through which the first air (supply air) flows and a second path through which the second air (exhaust) flows are included.

The cooling unit 3 of the second embodiment includes a first vaporization filter 31, a second vaporization filter 32, a water supply unit 33, and a drain pan 34, as in the first embodiment. The water supply unit 33 of the second embodiment includes a first water supply unit 33A mounted on the upper portion of the first vaporization filter 31 and a second water supply unit 33B mounted on the upper portion of the second vaporization filter 32. The first water supply unit 33A and the second water supply unit 33B are different from the first embodiment in that they are placed on the upper portions of the first vaporization filter 31 and the second vaporization filter 32 in a separated form.

As shown in the figure of the present embodiment, the water supply pump 913 and the recovery pump 923 are provided side by side above the heat exchanger 4. The water supply pump 913 is provided in the supply water channel 91 as in the first embodiment, and in the supply water channel 91, the housing 11 (main body) and the tank 12 (separate body) have, for example, a stop valve (closing valve). The supply water channel 91 communicates with the water channel 91 through the water supply channel 91.

The recovery pump 923 and the water supply pump 913 may be placed side by side above the sensible heat exchanger 4 and the top plate of the housing 11 may be opened to make these pumps accessible. This makes it possible to improve work efficiency such as inspection or replacement of the recovery pump 923 and the water supply pump 913 during maintenance of the air conditioner 1. By mounting the water supply pump 913 and the recovery pump 923 side by side, it is not necessary to provide mounting spaces on the upper and lower sides, and the height of the housing 11 can be reduced to reduce the size of the product.

The water (supply water) pumped up from the tank 12 by the water supply pump 913 is supplied to the water supply unit 33 (first water supply unit 33A, second water supply unit 33B) via the supply water channel 91. The supply channel 91 between the water supply pump 913 and the first water supply section 33A and the second water supply section 33B is provided with a branch channel that branches into the first supply channel 911 and the second supply channel 912. The branch path may be located above the sensible heat exchanger 4. The first supply channel 911 and the second supply channel 912 branched by the branch channel formed in the supply channel 91 are connected to the first water supply section 33A and the second water supply section 33B. That is, the first supply water channel 911 communicates with the first water supply unit 33A, and the second supply water channel 912 communicates with the second water supply unit 33B.

The first water supply unit 33A and the second water supply unit 33B are separated from each other for each of the first vaporization filter 31 and the second vaporization filter 32 so as to correspond individually. Then, by communicating the first supply water channel 911 and the second supply water channel 912 branched by the branch channel of the supply water channel 91 to the first water supply unit 33A and the second water supply unit 33B, the first water supply unit 33A and the second water supply unit 33A and the second water supply unit 33B are communicated with each other. It is possible to suppress the occurrence of bias in the amount of water (water amount) supplied to each of the two water supply units 33B. That is, water (supply water) is diverted at a branch path located outside the first water supply unit 33A and the second water supply unit 33B. As a result, for example, even if the air conditioner 1 mounted on the moving body M is tilted due to the behavior of the moving body M and a height difference occurs between the first water supply unit 33A and the second water supply unit 33B, the first It is possible to suppress the occurrence of drift in the amount of water flowing into the first water supply unit 33A and the second water supply unit 33B. Therefore, even if the air conditioner 1 is mounted on the moving body M and the posture of the air conditioner 1 changes depending on the condition of the road surface on which the moving body M moves, the first water supply unit 33A and the second water supply unit 33A and the second water supply The amount of water supplied to each of the portions 33B can be equalized.

The water (supply water) that has flowed into the first water supply unit 33A through the first supply water channel 911 is dropped onto the first vaporization filter 31 through the first water supply hole 331 as in the first embodiment. The water (supply water) that has flowed into the second water supply unit 33B via the second supply water channel 912 is dropped onto the second vaporization filter 32 via the second water supply hole 332 as in the first embodiment.

The recovery pump 923 is provided in the recovery water channel 92 as in the first embodiment, and in the recovery water channel 92, the housing 11 (main body) and the tank 12 (separate body) have, for example, a stop valve (closing valve). The recovery channel 92 communicates through the channel 92. The water (reclaimed water) that has flowed down to the drain pan 34 as in the first embodiment is collected in the tank 12 via the recovery water channel 92.

The water flowing down from the first vaporization filter 31 and the second vaporization filter 32 may be collected at one place by the drain pan 34, merged as the recovery water channel 92, and connected to the recovery pump 923. That is, in the drain pan 34, the first recovery water channel 921 after the addition of the first vaporization filter 31 and the second recovery water channel 922 after the addition of the second vaporization filter 32 are aggregated (merged) at one place. May be. With such a configuration, for example, even when the air conditioner 1 is mounted on a moving body and the housing 11 is tilted due to the behavior of the moving body, the first vaporization filter 31 and the second vaporization filter 32 The water that has flowed down from the drain pan 34 can be collected in one place of the drain pan 34, that is, a communication hole that communicates with the recovery water channel 92, and the water can be reliably conveyed by the recovery pump 923. That is, for example, when the drain pan 34 is provided with a plurality of communication holes, when the housing 11 is tilted, air is drawn from one of the communication holes by the recovery pump 923, and water is drawn from the other communication hole. Where there is a concern that it will not be possible, the water that has flowed down from the first vaporization filter 31 and the second vaporization filter 32 is collected in one place by the drain pan 34 and conveyed by the recovery pump 923 via the recovery water channel 92. The water can be reliably collected in the tank 12.

FIG. 11 is a schematic perspective view illustrating one configuration of the cooling unit 3. The cooling unit 3 of the second embodiment includes a first vaporization filter 31, a second vaporization filter 32, a drain pan 34, and a water supply unit 33 as in the first embodiment, and the water supply unit 33 is a separately configured first. The water supply unit 33A and the second water supply unit 33B are included.

The drain pan 34 has an L-shape, and the first vaporization filter 31 and the second vaporization filter 32 are placed in the regions constituting the respective sides constituting the L-shape. The first vaporization filter 31 and the second vaporization filter 32 are fastened in an L shape by being placed on the drain pan 34.

A first water supply unit 33A is placed on the upper part of the first vaporization filter 31, and a second water supply part 33B is placed on the upper part of the second vaporization filter 32, whereby the first water supply part 33A and the second water supply part are placed. The 33B is arranged so as to form an L shape like the first vaporization filter 31 and the second vaporization filter 32. With such a configuration, the outer shell of the cooling unit 3 can be configured to have an L-shape, the storage capacity of the cooling unit 3 is improved, and the air conditioner 1 for accommodating the cooling unit 3 is provided. The size of the housing 11 can be reduced.

FIG. 12 is an explanatory diagram illustrating the internal structure of the water supply unit 33. FIG. 13 is a schematic side view illustrating one configuration of the water supply unit 33. FIG. 14 is an explanatory diagram illustrating a main part of the water supply unit 33. FIG. 12 is a view of the water supply section 33 viewed from above, and FIG. 13 is a central cross-sectional view (cross section cut along the line CC) when the water supply section 33 is viewed from the pipe section 335 side. The water supply unit 33 shown in FIGS. 12 to 14 is a modified configuration of the water supply unit 33 shown in FIG. In the illustration in the present embodiment, the structure of the first water supply unit 33A will be described based on the first water supply unit 33A constituting the water supply unit 33. The structure of the second water supply unit 33B is the same as the structure of the first water supply unit 33A.

The first water supply unit 33A forms a box body having a hollow structure inside, and has a rectangular shape that seals a horizontally long container portion 333 into which water (supply water) flows and the container portion 333 from above. Includes top surface portion 334. The opening surface located at the upper part of the container portion 333 is closed by the top surface portion 334, so that the container portion 333 is sealed and the first water supply portion 33A having a hollow structure is configured.

The area of the top surface portion 334 (the area of the top surface portion 334 in front view) is wider than the opening area of the opening surface located at the upper part of the container portion 333, and the peripheral edge of the top surface portion 334 is outside the opening edge of the container portion 333. positioned. Therefore, on the lower surface of the top surface portion 334, a region where the container portion 333 is provided and a peripheral region around the region where the container portion 333 is provided are formed.

A tubular pipe portion 335 is provided in the central portion on the side surface of the container portion 333, and the supply water channel 91 (first supply water channel 911) communicates with the pipe portion 335. The water (supply water) flowing through the first supply water channel 911 flows into the container portion 333 via the pipe portion 335. That is, the internal space of the pipe portion 335 and the container portion 333 of the first water supply unit 33A constitutes a part of the first supply water channel 911. The container portion 333 is provided along the longitudinal direction of the first vaporization filter 31 on which the first water supply portion 33A is placed, and the container portion 333 and the pipe portion projecting from the side surface of the container portion 333 are provided. With 335, a T-shaped water channel is formed. The T-shaped channel forms a part of the first supply channel 911.

Similar to the first embodiment, a plurality of (13 in the drawing) first water supply holes 331 are provided on the bottom surface of the container portion 333 along the longitudinal direction of the container portion 333. That is, the first water supply hole 331 is provided along the longitudinal direction of the first vaporization filter 31 on which the first water supply unit 33A is placed. As an example, the first water supply hole 331 is arranged point-symmetrically in the longitudinal direction with the first water supply hole 331 provided in the center of the container portion 333 as a center point. By arranging the container portion 333 on the upstream side of the first air passing through the first vaporization filter 31, the first water supply hole 331 provided in the container portion 333 is biased to the upstream side of the first air. You may.

Drilling holes 336 are provided at both ends of the container portion 333 in the longitudinal direction. The extraction hole 336 is provided so as to penetrate the side surface of the container portion 333, and is formed above the first water supply hole 331 provided on the bottom surface. As an example, the extraction hole 336 is provided at the uppermost portion of the container portion 333. Further, the opening area of the extraction hole 336 is provided smaller than the opening area of the first water supply hole 331. As a result, air having a lighter specific density than water can be preferentially discharged from the extraction hole 336. In other words, most of the supplied water is dropped from the first water supply hole 331 to the first vaporization filter 31. As an example, the side surface provided with the hole 336 is a side surface located on the opposite side of the side surface provided with the pipe portion 335. The penetration direction of the extraction hole 336 provided through the side surface forms an angle of 90 ° with respect to the penetration direction of the first water supply hole 331 provided on the bottom surface, that is, the penetration direction of the extraction hole 336 is the first. It is different from the penetrating direction of the water supply hole 331.

Since the container portion 333 is sealed by the top surface portion 334, there is a concern that air may stay inside the container portion 333 (first water supply portion 33A), and the extraction hole 336 is from the first water supply hole 331. Is also formed above, so that the air accumulated above the container portion 333 can be efficiently discharged. The punching holes 336 are provided at both ends of the container portion 333 in the longitudinal direction, and the pipe portion 335 is provided at the central portion of the container portion 333 in the longitudinal direction. Therefore, when water flows into the container portion 333 from the pipe portion 335 located in the central portion, the air attracted to both ends by the water can be efficiently discharged from the extraction hole 336. As an example, the cutout portion formed in the wall portion of the container portion 333 and the top surface portion 334 may face each other to form a hole 336. Alternatively, a hole 336 may be formed by providing a recess slightly larger than the wall surface of the container portion 333 in the top surface portion 334 and sealing the container portion 333 with the top surface portion 334.

The lower surface of the top surface portion 334 that seals the container portion 333 from above includes a region provided with the container portion 333 and a peripheral region around the region provided with the container portion 333. A water receiving wall 337 for receiving the water flowing out (discharged) from the extraction hole 336 is provided in the peripheral area.

The water receiving wall 337 is provided so as to project downward from the lower surface of the top surface portion 334, that is, toward the side of the first vaporization filter 31. The water receiving wall 337 is composed of, for example, ribs and has an L-shape. By forming the water receiving wall 337 in an L shape, the rigidity of the water receiving wall 337 can be improved. Further, by forming the L-shape, the supply water scattered on the water receiving wall 337 facing the extraction hole 336 can be received by the L-shaped portion and surely dropped onto the first vaporization filter 31. In the L-shaped water receiving wall 337, the wall surface corresponding to the long side of the L-shape is provided so as to be perpendicular to the penetrating direction of the extraction hole 336. The wall surface corresponding to the short side of the L-shape is provided so as to be parallel to the penetrating direction of the hole 336. The L-shaped water receiving wall 337 is provided so that the inside of the L-shape faces the corner of the rectangular container portion 333 and is along the corner.

The through hole 336 provided so as to penetrate the side surface of the container portion 333 includes an inner opening end portion of the container portion 333 and an outer opening end portion of the container portion 333. The wall surface corresponding to the long side of the L-shaped water receiving wall 337 is perpendicular to the penetrating direction of the hole 336, that is, the wall surface is provided so as to face the outer opening end of the hole 336. There is. Therefore, the water flowing out (discharged) from the hole 336 hits the wall surface corresponding to the long side of the L-shaped water receiving wall 337, and after being received by the wall surface, goes downward in the projecting direction of the wall surface. You will be guided. Since the first vaporization filter 31 is provided below the wall surface, that is, below the first water supply unit 33A, the water guided downward is dropped onto the first vaporization filter 31. As a result, even if the volumetric flow rate of the water (supply water) supplied to the first water supply unit 33A is larger than the volumetric flow rate dropped from the first water supply hole 331 to the first vaporization filter 31, the hole 336 is removed. Water can be drained (drained) from. The water flowing out of the hole 336 is guided downward by the water receiving wall 337 and can be dropped onto the first vaporization filter 31.

The wall surface corresponding to the long side of the L-shaped water receiving wall 337 is formed in a tapered shape such as a V-shape or a U-shape toward the lower side in the projecting direction. Therefore, on the wall surface, the tapered tip portion corresponds to the lowermost portion of the water receiving wall 337, and water is efficiently dropped onto the first vaporization filter 31 from the tapered tip portion. Can be done. Further, it is considered that a part of the supplied water that hits the water receiving wall 337 adheres to the outer wall of the rebound container portion 333. Further, it is conceivable that a part of the supply water travels from the extraction hole 336 to the outer wall of the container portion 333. Therefore, as shown in FIG. 14, a rib extending downward from the hole 336 on the wall surface of the container portion 333 may be provided. In the example of FIG. 14, the lowermost portion of the rib is arranged in a straight line connecting a plurality of first water supply holes 331. This makes it possible to disperse the dropping position of the supply water with respect to the first vaporization filter 31 and eliminate the bias of the supply water in the first vaporization filter 31.

The structure of the second water supply unit 33B is the same as the structure of the first water supply unit 33A. The second water supply unit 33B includes a container unit 333 and a top surface portion 334 like the first water supply unit 33A, and the container unit 333 is provided with a pipe portion 335, a second water supply hole 332, and a drain hole 336, and the top surface portion 334 is provided. A water receiving wall 337 is projected from the lower surface of the water receiving wall. By replacing the description regarding the first water supply unit 33A with the description regarding the second water supply unit 33B, the structure relating to the second water supply unit 33B will be described.

In the branch channel of the supply channel 91, when branching to the first supply channel 911 and the second supply channel 912, there is a difference in the amount of water supplied to each of the first water supply section 33A and the second water supply section 33B per unit time. It may be. Specifically, the amount of water supplied to the first water supply unit 33A may be smaller than the amount of water supplied to the second water supply unit 33B. That is, the amount of water supplied to the first vaporization filter 31 may be smaller than the amount of water supplied to the second vaporization filter 32. In causing a difference in the amount of water supplied to the first water supply unit 33A and the second water supply unit 33B in this way, for example, the inner diameter of the first supply water channel 911 branched at the branch channel of the supply water channel 91 is the second supply. It may be smaller than the inner diameter of the water channel 912. Alternatively, the inner diameter of the pipe portion of the first water supply unit 33A to which the first supply water channel 911 is connected is made smaller than the inner diameter of the pipe portion of the second water supply unit 33B to which the second supply water channel 912 is connected. You may. Since the first air passing through the first vaporization filter 31 is cooled by the second air in the sensible heat exchanger 4, the saturated water vapor pressure (saturated water vapor amount) is lowered. On the other hand, the second air passing through the second vaporization filter 32 is the air immediately after being sucked from the suction port 5. Therefore, the saturated water vapor pressure of the first air passing through the first vaporization filter 31 is lower than the saturated water vapor pressure of the second air passing through the second vaporization filter 32. That is, the amount of vaporization of the first air in the first vaporization filter 31 in a unit time is smaller than the amount of vaporization of the second air in the second vaporization filter 32. On the other hand, by setting the amount of water supplied to the first vaporization filter 31 to be smaller than the amount of water supplied to the second vaporization filter 32, it is possible to suppress the supply of excessive water to the first vaporization filter 31. , The integrated drive amount of the water supply pump 913 can be saved, the product life can be improved, and the power consumption can be reduced.

For example, an electromagnetic three-way valve is provided in the branch path of the supply water channel 91 to supply water to the first vaporization filter 31 via the first water supply section 33A and water to the second vaporization filter 32 via the second water supply section 33B. It may be performed alternately. With such a configuration, the flow rate of water supplied by the water supply pump 913 at one time can be halved, and the life of the water supply pump 913 can be extended. Alternatively, the water supply pump 913 can be miniaturized, and the cost and miniaturization of the air conditioner 1 (entire product) can be reduced. The opening and closing of each valve of the electromagnetic three-way valve is controlled by, for example, a controller 130. In controlling the electromagnetic three-way valve, the controller 130 shortens the time for opening the valve connected to the first supply water channel 911 to be shorter than the time for opening the valve connected to the second supply water channel 912. The amount of water supplied to the first vaporization filter 31 may be smaller than the amount of water supplied to the second vaporization filter 32.

Electromagnetic wave that can switch between the route for collecting (draining) the water in the drain pan 34 to the tank 12 and the route for supplying water to the first vaporization filter 31 and the second vaporization filter 32 without collecting (draining) the water in the tank 12. A three-way valve may be provided. The controller 130 drives a water supply pump 913 to supply water from the tank 12 to the extent that the maximum amount of water can be stored in the drain pan 34, and then supply the water in the drain pan 34 to the first vaporization filter 31 and the second vaporization filter 32. In addition, water is circulated between the drain pan 34 and the first vaporization filter 31 and the second vaporization filter 32. After circulation, when the first vaporization filter 31 and the second vaporization filter 32 are sufficiently wet, the water in the drain pan 34 is collected (drained) and returned to the tank 12. By circulating only the water accumulated in the drain pan 34, it is easy to cool the water temperature to the wet-bulb temperature, a water cooling effect can be obtained, and the cooling performance can be improved.

(Appendix 1: Air conditioner 1 in general)
The air conditioner 1 according to one aspect of the present disclosure includes a housing 11 having a first outlet 71 and a second outlet 72, a first flow path 61 communicating with the first outlet 71, and the second outlet. A second flow path 62 communicating with the outlet 72, a visible heat exchanger 4 for exchanging explosive heat between the first air flowing through the first flow path 61 and the second air flowing through the second flow path 62. The first vaporization filter 31 includes a first vaporization filter 31 that cools the first air by the latent heat of water, and a second vaporization filter 32 that cools the second air by the latent heat of water. The second vaporization filter 32 is provided on the downstream side of the manifest heat exchanger 4 in the air flow direction, and the second vaporization filter 32 is provided on the upstream side of the manifest heat exchanger 4 in the second air flow direction. ing.

In this embodiment, the air conditioner 1 exchanges sensible heat between the two flow paths of the first flow path 61 and the second flow path 62 and the first air and the second air flowing through these flow paths. The exchanger 4 is provided. The air conditioner 1 further includes a first vaporization filter 31 and a second vaporization filter 32, and the first air passing through the first vaporization filter 31 is latent heat (heat of vaporization) of water permeating the first vaporization filter 31. The second air that has passed through the second vaporization filter 32 is cooled by the latent heat (heat of vaporization) of the water that has permeated the second vaporization filter 32. Since the second vaporization filter 32 is provided on the upstream side of the sensible heat exchanger 4 in the flow direction of the second air, it flows into the sensible heat exchanger 4 after being cooled by the heat of vaporization. The first air flowing into the sensible heat exchanger 4 exchanges heat with the second air cooled by the second vaporization filter 32 via the sensible heat exchanger 4 and is cooled. The first air flowing out of the sensible heat exchanger 4 is further cooled by the first vaporization filter 31 provided on the downstream side of the sensible heat exchanger 4 in the flow direction of the first air, and then the first blow. It is blown out from the outlet 71 into the air-conditioned space as air supply (SA). Therefore, since the air conditioner 1 cools the first air blown out to the air-conditioned space in two stages, the first air is efficiently cooled, and the air-conditioned space is efficiently used by using the first air. Can be cooled. In the air conditioner 1 configured in this way, the first vaporization filter 31 and the second vaporization are provided in the first flow path 61 (supply air flow path) and the second flow path 62 (exhaust flow path), which are different flow paths, respectively. It includes two vaporization filters of the filter 32. By using the first vaporization filter 31 and the second vaporization filter 32 as a cold heat source, the first air can be cooled efficiently. Of the first vaporization filter 31 and the second vaporization filter 32, the first air blown out into the air-conditioned space as the supply air (SA) passes through the first vaporization filter 31, so that the first air is the same. The first air can be efficiently cooled while suppressing an increase in absolute humidity. The water for generating the heat of vaporization is supplied (supplied) to the first vaporization filter 31 and the second vaporization filter 32, that is, the water for generating the heat of vaporization is supplied to the heat exchanger 4. , Not directly supplied (water supply). Therefore, it is possible to prevent water droplets from remaining in the first path 41 and the second path 42, which are inside the sensible heat exchanger 4.

In the air conditioner 1 according to one aspect of the present disclosure, the first vaporization filter 31 and the second vaporization filter 32 are fastened in an L shape by a fastening member.

In this embodiment, since the first vaporization filter 31 and the second vaporization filter 32 are fastened in an L shape by the fastening member, the storability when storing in the housing 11 is improved, and the housing 11 It is possible to reduce the size.

In the air conditioner 1 according to one aspect of the present disclosure, the fastening member is a drain pan 34 that receives water that has not been vaporized by the first vaporization filter 31 and the second vaporization filter 32.

In this embodiment, the first vaporization filter 31 and the second vaporization filter 32 are fastened by using an L-shaped drain pan 34 provided below the first vaporization filter 31 and the second vaporization filter 32 as the fastening member. It is possible to reduce the size and weight of the air conditioner 1 by eliminating the need for special parts for the purpose.

In the air conditioner 1 according to one aspect of the present disclosure, the sensible heat exchanger 4 is such that the inner surface of the housing 11 and the end surface of the sensible heat exchanger 4 facing the inner surface form an acute angle. It is stored in the body 11.

In this embodiment, the sensible heat exchanger is such that the inner surface of the housing 11 and the end surface of the sensible heat exchanger 4 facing the inner surface form an acute angle in the range of, for example, 10 degrees to 50 degrees. It is stored in. That is, the sensible heat exchanger 4 rotates at a rotation angle corresponding to the acute angle from a state (posture position) in which the inner surface of the housing 11 and the end surface of the sensible heat exchanger 4 facing the inner surface are parallel to each other. In this state, it is stored in the housing 11. By housing the sensible heat exchanger 4 in the housing 11 in a state of being rotated at a predetermined rotation angle in this way, the heat exchangeable area (heat) in the sensible heat exchanger 4 with respect to the size of the housing 11 A large exchange area) can be secured.

In the air conditioner 1 according to one aspect of the present disclosure, the microheat exchanger 4 includes a first path 41 through which the first air flows and a second path 42 through which the second air flows, and the first path. The vaporization filter 31 covers the outlet of the first path 41, and the second vaporization filter 32 covers the inlet of the second path 42.

In this embodiment, the sensible heat exchanger 4 includes a first path 41 through which the first air flows and a second path 42 through which the second air flows. Therefore, the first path 41 constitutes a part of the first flow path 61, and the second path 42 constitutes a part of the second flow path 62. Since the first vaporization filter 31 provided on the downstream side of the sensible heat exchanger 4 in the flow direction of the first air is provided so as to cover the outlet of the first path 41, it is provided so as to cover the outlet of the first path 41. The first air outflowing (outflowing from the sensible heat exchanger 4) can be efficiently cooled. That is, the first outlet of the first vaporization filter 31 is formed with the outlet of the first path 41 so that all the first air flowing out of the outlet of the first path 41 passes through the first vaporization filter 31. It covers the side opening surface 441. Since the second vaporization filter 32 provided on the upstream side of the sensible heat exchanger 4 in the flow direction of the second air is provided so as to cover the inlet of the second path 42, the inlet of the second path 42 The second air flowing into (flowing into the sensible heat exchanger 4) can be efficiently cooled. That is, the second inlet of the second vaporization filter 32 is formed with the inlet of the second path 42 so that all the second air flowing into the inlet of the second path 42 passes through the second vaporization filter 32. It covers the side opening surface 432. With such a configuration, it is possible to reduce the flow rate of the air bypassed without passing through the first vaporization filter 31 or the second vaporization filter 32.

In the air conditioner 1 according to one aspect of the present disclosure, the first path 41 and the second path 42 are provided so as to intersect each other in forming a orthogonal flow in the sensible heat exchanger 4, and the sensible heat is provided. The angle formed by each of the one surface of the first vaporization filter 31 and the second vaporization filter 32 facing the exchanger 4 is equal to or larger than the crossing angle of the first path 41 and the second path 42.

In this embodiment, the first path 41 and the second path 42 of the heat exchanger 4 are provided so as to intersect each other, so that a orthogonal flow is formed between the first air and the second air. The angle formed from each of the end faces of the first vaporization filter 31 and the second vaporization filter 32 facing the heat exchanger 4 is equal to or larger than the crossing angle of the first path 41 and the second path 42, for example, 60 degrees to 120 degrees. Degree. In addition, the crossing angle of the sensible heat exchanger 4 by the first path 41 and the second path 42 may be a rhombus forming any angle from 60 degrees to 120 degrees instead of 90 degrees. In this case, The angle formed from each of the end faces of the first vaporization filter 31 and the second vaporization filter 32 may be ± 30 degrees with respect to the crossing angle. Therefore, the inside of the L-shape formed from the end faces of each of the first vaporization filter 31 and the second vaporization filter 32 is fastened by the fastening member toward the corner portion of the rectangular heat exchanger 4. Since the 1st vaporization filter 31 and the 2nd vaporization filter 32 can be arranged, it is possible to improve the storability of these filters and the like and to reduce the size of the housing 11.

In the air conditioner 1 according to one aspect of the present disclosure, the first outlet side opening surface 441 provided with the outlet of the first path 41 in the sensible heat exchanger 4 and the first outlet side opening surface 441 are provided. The inter-plane distance from the inner surface of the facing housing 11 increases toward the downstream side of the first air.

In this embodiment, the distance between the first outlet side opening surface 441 of the sensible heat exchanger 4 and the inner surface of the housing 11 facing the first outlet side opening surface 441 is set to the downstream side of the first air. The sensible heat exchanger 4 is housed in the housing 11 so as to become larger as it becomes larger. Therefore, the flow path cross-sectional area of the first flow path 61 located on the downstream side of the outlet of the first path 41 provided on the first outlet side opening surface 441 can be gradually increased toward the downstream side. , It is possible to reduce the pressure loss for the first air flowing out from the outlet of the first path 41.

In the air conditioner 1 according to one aspect of the present disclosure, the housing 11 is provided with a suction port 5 for sucking the first air and the second air, and the suction port 5 and the sensible heat. A dust collecting filter 53 interposed between the exchanger 4 is provided, and the dust collecting filter 53 is provided so as to be curved so as to cover the inlet of the first path 41 and the inlet of the second path 42.

In this embodiment, the dust collecting filter 53 interposed between the suction port 5 and the sensible heat exchanger 4 is curved so as to cover the inlet of the first path 41 and the inlet of the second path 42 of the sensible heat exchanger 4. It is provided. Therefore, by sharing the dust collecting filter 53 in the first flow path 61 and the second flow path 62, the number of parts in the air conditioner 1 can be reduced. Even when the inlet of the first path 41 and the inlet of the second path 42 are provided on different end faces of the sensible heat exchanger 4, the single dust collecting filter 53 is curved to cause the first path. It is possible to cover the inlets of both the 1st path 41 and the 2nd path 42 to prevent dust from entering the inside of the sensible heat exchanger 4.

In the air conditioner 1 according to one aspect of the present disclosure, seal members 531 are provided at both ends of the dust collecting filter 53.

In this embodiment, since the sealing members 531 are provided at both ends of the dust collecting filter 53, air flows into the sensible heat exchanger 4 without passing through the dust collecting filter 53. It can be suppressed.

In the air conditioner 1 according to one aspect of the present disclosure, the space between the heat exchanger 4 and the suction port 5 is created by the dust collecting filter 53 in the flow directions of the first air and the second air. The downstream side space is divided into an upstream side space and a downstream side space, and the suction air sucked from the suction port 5 is passed through the first path 41 to the first air and the first air. A branch flow path 52 that separates from the second air flowing through the two paths 42 is formed.

In this embodiment, the space between the heat exchanger 4 and the suction port 5 is divided into an upstream space and a downstream space in the flow directions of the first air and the second air by the dust collection filter 53. In the space on the downstream side, a branch flow path 52 that branches into the first path 41 and the second path 42 is formed. Therefore, the first path 41 through which the first air flows in the downstream space on the downstream side of the dust collection filter 53 while sharing the suction port 5 and the dust collection filter 53 in the first path 41 and the second path 42. And the second path 42 through which the second air flows, and the separated first air and the second air can be efficiently flowed into the sensible heat exchanger 4. The upstream space is a space through which the suction air before being branched into the first air and the second air flows, and corresponds to the suction flow path 51. The suction flow path 51 (upstream space) communicates with the outside of the housing 11 via the suction port 5. Since the suction flow path 51 (upstream space) is a path shared by the first path 41 and the second path 42, the suction port 5 can also be shared by the first path 41 and the second path 42. , The degree of freedom of arrangement when the hole-shaped suction port 5 is provided in the housing 11 is improved, the strength of the housing 11 is ensured, and the opening area of the suction port 5 is increased to increase the flow path resistance in the suction air. Pressure loss) can be reduced.

In the air conditioner 1 according to one aspect of the present disclosure, the upstream space is provided with a supply water channel 91 for supplying water to the first vaporization filter 31 or the second vaporization filter 32.

In this embodiment, the upstream space corresponds to the suction flow path 51 through which the suction air sucked from the suction port 5 flows, and the temperature of the suction air is the temperature of the ambient air outside the housing 11. Equivalent. The water flowing in the supply water channel 91 located in the upstream space (suction flow path 51) exchanges heat with the suction air flowing in the suction flow path 51. For example, the water temperature of the water flowing in the supply water channel 91 is the ambient air. When the temperature is higher than the temperature, the water can be cooled by the suction air to improve the cooling efficiency in the air conditioner 1. For example, fins or the like are provided on the outer peripheral surface of the supply water channel 91 arranged in the upstream space, and the heat transfer efficiency is improved by increasing the heat transfer area when exchanging heat with the suction air. You may.

In the air conditioner 1 according to one aspect of the present disclosure, a door portion 111 configured to be openable and closable is provided on the side surface of the housing 11 on the side where the first vaporization filter 31 is provided. The inner surface of the door portion 111 is provided with a suppressing member 112 that prevents air from entering the first flow path 61 without passing through the first vaporization filter 31.

In this embodiment, since the door portion 111 configured to be openable and closable is provided on the side surface of the side surface of the housing 11 on the side where the first vaporization filter 31 is provided, the door portion 111 is provided. By opening (making it open), it is possible to access the inside from the outside of the housing 11 and perform maintenance work such as replacement of the first vaporization filter 31 or the second vaporization filter 32. Since the inner surface of the door portion 111 is provided with the suppressing member 112 that suppresses the intrusion of air into the first flow path 61 without passing through the first vaporization filter 31, the first vaporization filter 31 is more than the first vaporization filter 31. It is possible to prevent air that has not been cooled by the first vaporization filter 31 from being mixed into the first flow path 61 on the downstream side. The fact that the restraining member 112 is provided on the inner surface of the door portion 111 is not only when the restraining member 112 is attached to the inner surface of the door portion 111, but also, for example, the first vaporization filter 31 or the first vaporization filter. It is included that the restraining member 112 is attached to the fastening member for fastening the 31 and the second vaporization filter 32. In this case, by closing the door portion 111 (closed state), the inner surface of the door portion 111 presses the suppressing member 112, and air enters the first flow path 61 without passing through the first vaporization filter 31. It may be something that suppresses this.

In the air conditioner 1 according to one aspect of the present disclosure, the tank 12 provided outside the housing 11 and the water in the tank 12 are supplied to the first vaporization filter 31 and the second vaporization filter 32. The supply water channel 91 is provided, and the recovery water channel 92 for collecting the water not vaporized by the first vaporization filter 31 and the second vaporization filter 32 into the tank 12.

In this embodiment, the tank 12 for holding the water supplied to the first vaporization filter 31 and the second vaporization filter 32 is provided outside the housing 11, so that it is not necessary to store the tank 12 in the housing 11. Therefore, the size of the housing 11 can be reduced and the weight of the housing 11 can be reduced. As a result, for example, when the air conditioner 1 is mounted on a moving body M such as a forklift, the housing 11 which is the main body of the air conditioner 1 and the tank 12 which is configured as a separate body from the housing 11 are separated from each other. The housing 11 and the tank 12 can be mounted according to the shape such as the outer shape of the moving body M on which the air conditioner 1 is mounted. The tank 12 and the first vaporization filter 31 and the second vaporization filter 32 are communicated with each other by the supply water channel 91 and the recovery water channel 92, that is, the tank 12, the supply water channel 91, the first vaporization filter 31 and the second vaporization. A circulation circuit is formed in which water is recovered (returned) to the tank 12 via the filter 32 and the recovery channel 92. By the circulation circuit, the water not vaporized by the first vaporization filter 31 and the second vaporization filter 32 can be efficiently recovered in the tank 12 and the amount of water remaining inside the housing 11 can be reduced. can. For the water permeating the first vaporization filter 31 and the second vaporization filter 32, for example, after the stop button is pressed by the operator of the air conditioner 1, the water from the tank 12 is not supplied. The first vaporization filter 31 and the second vaporization filter 32 may be dried by performing the non-water supply operation for driving the fan.

(Appendix 2: Configuration of cooling unit 3)
The cooling unit 3 according to one aspect of the present disclosure is a cooling unit 3 used for an air conditioner 1 for cooling an air-conditioned space, and cools the first air blown into the air-conditioned space by latent heat of water. The first vaporization filter 31 and the second vaporization filter 32 are provided with a second vaporization filter 32 for cooling the second air, which is exposed to heat exchanged with the first air, by the latent heat of water, and the first vaporization filter 31 and the second vaporization filter 32. Is fastened in an L shape by a fastening member.

In this aspect, in this aspect, since the first vaporization filter 31 and the second vaporization filter 32 included in the cooling unit 3 are fastened in an L shape by the fastening member, the storability can be improved. It is possible to reduce the size of the housing 11 of the air conditioner 1 that houses the cooling unit 3.

In the cooling unit 3 according to one aspect of the present disclosure, the fastening member is a drain pan 34 that receives water that has not been vaporized by the first vaporization filter 31 and the second vaporization filter 32.

In this aspect, in this aspect, the first vaporization filter 31 and the second vaporization are performed by using the L-shaped drain pan 34 provided below the first vaporization filter 31 and the second vaporization filter 32 as the fastening member. It is possible to reduce the size and weight of the air conditioner 1 by eliminating the need for special parts for fastening the filter 32.

In the cooling unit 3 according to one aspect of the present disclosure, the drain pan 34 has an L-shape, and the first vaporization filter 31 and the region constituting each side of the drain pan 34 forming the L-shape have an L-shape. The second vaporization filter 32 is mounted.

In this embodiment, in the L-shaped drain pan 34, the first vaporization filter 31 and the second vaporization filter 32 are placed in the regions constituting the respective sides constituting the L-shape. The drain pan 34 and the first vaporization filter 31 and the second vaporization filter 32 mounted on the drain pan 34 are both L-shaped in front view, so that the cooling unit 3 is also L-shaped. can do. Therefore, it is possible to improve the storage capacity of the cooling unit 3 and reduce the size of the housing 11 of the air conditioner 1 that houses the cooling unit 3.

The cooling unit 3 according to one aspect of the present disclosure includes a first water supply unit 33A for supplying water to the first vaporization filter 31 and a second water supply unit 33B for supplying water to the second vaporization filter 32. The first water supply unit 33A is placed on the upper part of the first vaporization filter 31, and the second water supply part 33B is placed on the upper part of the second vaporization filter 32, whereby the first water supply part 33A and the first water supply part 33A and the second water supply part 33B are placed. The second water supply unit 33B has an L shape.

In this embodiment, the cooling unit 3 includes a water supply unit 33 for supplying water to the first vaporization filter 31 and the second vaporization filter 32, and the water supply unit 33 is placed on the upper portion of the first vaporization filter 31. It includes a first water supply unit 33A and a second water supply unit 33B mounted on the upper part of the second vaporization filter 32. The first water supply unit 33A and the second water supply unit 33B placed on the first vaporization filter 31 and the second vaporization filter 32 have an L shape like the first vaporization filter 31 and the second vaporization filter 32. Therefore, it is possible to improve the storability of the cooling unit 3 and reduce the size of the housing 11 of the air conditioner 1 that houses the cooling unit 3.

In the cooling unit 3 according to one aspect of the present disclosure, the first water supply hole 331 formed in the first water supply unit 33A is provided on the upstream side of the first vaporization filter 31 in the flow direction of the first air. The second water supply hole 332 formed in the second water supply unit 33B is provided on the upstream side of the second vaporization filter 32 in the flow direction of the second air.

In this embodiment, the first water supply hole 331 formed in the first water supply section 33A is provided on the upstream side of the first vaporization filter 31 in the flow direction of the first air, and is formed in the second water supply section 33B. The 2 water supply holes 332 are provided on the upstream side of the second vaporization filter 32 in the second air flow direction, that is, both the first water supply holes 331 and the second water supply holes 332 are upstream in the respective air flow directions. It is provided on the side. Therefore, the density distribution of the water permeated into the first vaporization filter 31 and the second vaporization filter 32 can be biased to the upstream side in the respective air flow directions, and the first vaporization filter 31 and the second vaporization filter 32 can be biased. It can promote the vaporization of water and improve the cooling efficiency.

In the cooling unit 3 according to one aspect of the present disclosure, the first water supply unit 33A and the second water supply unit 33B are formed with a hole 336 for draining air or water, and the hole 336 is the hole 336. It is provided above the first water supply hole 331 formed in the first water supply section 33A and the second water supply hole 332 formed in the second water supply section 33B.

In this embodiment, since the first water supply unit 33A and the second water supply unit 33B are formed with a hole 336 for draining air or water, for example, the first water supply unit 33A and the second water supply unit 33B may be used. Even when the box body has a hollow internal structure, the air inside the box body can be discharged from the vent 336 to prevent the air from staying inside. Since the extraction hole 336 is provided above the first water supply hole 331 and the second water supply hole 332, the air inside the first water supply unit 33A and the second water supply unit 33B can be efficiently discharged. .. The penetration direction of the first water supply hole 331 and the second water supply hole 332 faces downward on the side of the first vaporization filter 31 and the second vaporization filter 32, whereas the penetration direction of the extraction hole 336 is the first. The withdrawal hole 336 may be formed so as to be different from the penetrating direction of the water supply hole 331 and the second water supply hole 332 and toward the side.

In the cooling unit 3 according to one aspect of the present disclosure, the water receiving wall 337 for receiving the water flowing out from the extraction hole 336 is provided, and the water receiving wall 337 is directed toward the first vaporization filter 31 or the second vaporization filter 32. It is provided so as to protrude.

In this embodiment, the penetration direction of the first water supply hole 331 and the second water supply hole 332 is downward, which is the side of the first vaporization filter 31 and the second vaporization filter 32, whereas the penetration direction of the extraction hole 336 is Is different from the penetrating direction of the first water supply hole 331 and the second water supply hole 332, and the withdrawal hole 336 is formed toward the side. That is, the hole 336 is provided so as to penetrate the side wall of the container portion 333 in the first water supply portion 33A and the second water supply portion 33B. Therefore, the extraction hole 336 includes an opening end portion inside the container portion 333 and an opening end portion outside the container portion 333. A water receiving wall 337 facing the outer open end of the hole 336 and receiving the water flowing out of the hole 336 is provided. Since the water receiving wall 337 is provided so as to project toward the first vaporization filter 31 or the second vaporization filter 32, even if water flows out from the extraction hole 336 together with the air, the outflowed water can be discharged. It is received by the water receiving wall 337 and is dropped toward the first vaporization filter 31 or the second vaporization filter 32 which is the protruding direction of the water receiving wall 337. That is, the water receiving wall 337 functions as a guide wall (guide wall) that guides (guides) the water flowing out from the extraction hole 336 to the first vaporization filter 31 or the second vaporization filter 32.

In the cooling unit 3 according to one aspect of the present disclosure, the water receiving wall 337 has a tapered shape.

In this embodiment, the water receiving wall 337 projects from the first water supply unit 33A and the second water supply unit 33B toward the first vaporization filter 31 or the second vaporization filter 32 located below, and is tapered. Has the shape of. Therefore, the tapered tip portion corresponds to the lowermost portion of the water receiving wall 337, and water is efficiently dropped from the tapered tip portion to the first vaporization filter 31 or the second vaporization filter 32. can do.

The air conditioner 1 according to one aspect of the present disclosure includes a cooling unit 3 according to one aspect of the present disclosure, a first path 41 through which the first air flows, and a second path 42 through which the second air flows. The first vaporization filter 31 includes a sensible heat exchanger 4 for exchanging sensible heat between the first air and the second air, and the first vaporization filter 31 is the sensible heat exchanger 4 in the flow direction of the first air. The second vaporization filter 32 is provided on the downstream side, and the second vaporization filter 32 is provided on the upstream side of the sensible heat exchanger 4 in the flow direction of the second air.

In this embodiment, the first vaporization filter 31 and the second vaporization filter 32 included in the cooling unit 3 are L-shaped and bent. Therefore, the inside of the L-shape is directed toward the corner portion of the heat exchanger 4 having a rectangular shape, for example, and the inside of the L-shape is aligned with the corner portion, so that the first vaporization filter 31 and the second vaporization filter 32 are placed. It can be arranged, the storage capacity of the cooling unit 3 can be improved, and the housing 11 of the air conditioner 1 can be downsized. The first vaporization filter 31 is provided on the downstream side of the sensible heat exchanger 4 in the flow direction of the first air, and the second vaporization filter 32 is provided on the upstream side of the sensible heat exchanger 4 in the flow direction of the second air. In the heat exchanger 4, the first air is cooled by the second air cooled by the second vaporization filter 32, and then the first air is further cooled by the first vaporization filter 31 to be covered. It can be blown into an air-conditioned space.

(Appendix 3: Cooling of the electric unit 13)
The air conditioner 1 according to one aspect of the present disclosure is a first air that communicates with a housing 11 having a first outlet 71 and a second outlet 72 and the first outlet 71 and is cooled by the latent heat of water. The first flow path 61 through which the air flows, the second flow path 62 through which the second air flowing through the second air outlet 72 and cooled by the latent heat of water flows, and the electric unit 13 housed in the housing 11. The electric unit 13 is provided facing the second flow path 62 and is cooled by the second air after sensible heat exchange with the first air.

In this embodiment, the air conditioner 1 includes a first flow path 61 through which the first air cooled by the latent heat of water flows, and a second flow path 62 through which the second air cooled by the latent heat of water flows. The first air cooled by using the latent heat (heat of vaporization) of water is blown out to the air-conditioned space from the first outlet 71 as supply air. Since the electric unit 13 housed in the housing 11 of the air conditioner 1 and serving as a heat generating source by consuming electric power is provided facing the second flow path 62 through which the second air flows, the second air is provided. Can cool the electric unit 13. Since the second air that cools the electric unit 13 is the second air that has undergone exponential heat exchange with the first air, it is blown out (exhausted) as exhaust from the second outlet 72. 2 The electric unit 13 can be cooled by using the cooling heat of air. Therefore, the electric unit 13 can be efficiently cooled without affecting the first air blown out from the first outlet 71 as supply air.

In the air conditioner 1 according to one aspect of the present disclosure, the second fan 82 that conveys the second air in the second flow path 62 and a part of the second flow path 62 are configured, and the second fan is formed. A fan casing 84 for accommodating the 82 is provided, and the fan casing 84 for accommodating the second fan 82 and the electric unit 13 are thermally connected.

In this embodiment, by thermally connecting the fan casing 84 accommodating the second fan 82 and the electric unit 13, the heat transfer efficiency between the second air flowing in the fan casing 84 and the electric unit 13 can be improved. It can be improved and the electric unit 13 can be efficiently cooled by using the second air.

In the air conditioner 1 according to one aspect of the present disclosure, a through hole 841 is formed in a portion of the fan casing 84 facing the electric unit 13, and a part of the electric unit 13 is formed through the through hole 841. Is exposed.

In this embodiment, a through hole 841 is formed in the fan casing 84, and a part of the electric unit 13 is exposed through the through hole 841. Therefore, a part of the electric unit 13 exposed through the through hole 841 comes into direct contact with the second air flowing in the fan casing 84, so that the heat transfer efficiency between the second air and the electric unit 13 can be improved. It can be improved and the electric unit 13 can be efficiently cooled by using the second air.

In the air conditioner 1 according to one aspect of the present disclosure, the electric unit 13 includes a substrate 131, a sealing plate 133 that seals the through hole 841 from the side of the electric unit 13, and the substrate 131 and the sealing plate. A heat transfer promoting member 132 interposed between the 133 and the sealing plate 133 is included, and a part of the sealing plate 133 is exposed from the through hole 841.

In this embodiment, the part of the electric unit 13 exposed from the through hole 841 is a part of the sealing plate 133 that seals the through hole 841 from the side of the electric unit 13, and the sealing plate 133 is For example, it is a part of the exterior of the electric unit 13 forming a box body. The electric unit 13 includes a substrate 131 on which an electric component serving as a heat source is mounted, and a heat transfer promoting member formed of a heat radiating material having high thermal conductivity between the substrate 131 and the sealing plate 133. Since the 132 is interposed, the heat generated from the substrate 131 can be efficiently dissipated to the internal space of the fan casing 84 via the heat transfer promoting member 132 and the sealing plate 133.

In the air conditioner 1 according to one aspect of the present disclosure, a part of the fan casing 84 for accommodating the second fan 82 is configured by the inner surface of the housing 11.

In this embodiment, since a part of the fan casing 84 that houses the second fan 82 is composed of the inner surface of the housing 11, the inner surface of the housing 11 is cooled by the second air flowing in the fan casing 84. It is possible to alleviate an increase in the temperature of the outer surface of the housing 11 due to the influence of the outside air and suppress a decrease in the cooling capacity of the air conditioner 1.

In the air conditioner 1 according to one aspect of the present disclosure, the first fan 81 that conveys the first air in the first flow path 61 and a part of the first flow path 61 are configured, and the first fan is formed. The fan casing 84 for accommodating the first fan 81 is provided with the fan casing 84 for accommodating the first fan 81, and the fan casing 84 for accommodating the first fan 81 is composed of a heat transfer suppressing member.

In this embodiment, the fan casing 84 for accommodating the first fan 81 is composed of a heat transfer suppressing member having a low thermal conductivity (having a heat insulating property) such as styrofoam, and therefore accommodates the first fan 81. It is possible to reduce the influence of the outside air temperature on the first air passing through the fan casing 84 and suppress the temperature rise of the first air.

In the air conditioner 1 according to one aspect of the present disclosure, the partition plate 83 that partitions the space in which the first fan 81 is provided and the space in which the second fan 82 is provided in the fan casing 84. The fan motor 8 for driving the first fan 81 and the second fan 82 is arranged in the space where the second fan 82 is provided.

In this embodiment, since the first fan 81 and the second fan 82 share a single fan motor 8, the number of parts of the air conditioner 1 can be reduced and the weight can be reduced. A partition plate 83 is provided in the fan casing 84, and the partition plate 83 allows the internal space of the fan casing 84 to be the space in which the first fan 81 is provided (the fan chamber of the first fan 81). , The space where the second fan 82 is provided (the fan room of the second fan 82) is partitioned. The partition plate 83 is made of, for example, a resin member, and a heat transfer suppressing member having a low thermal conductivity such as styrofoam is attached to the partition plate 83 portion on the fan chamber side of the first fan 81. It may be due to a laminated structure. Alternatively, the partition plate 83 may be composed of a heat transfer suppressing member by a hollow member or the like having an air layer inside. The heat transfer suppressing member constituting at least a part of the partition plate 83 reduces the thermal conductivity of the partition plate 83, so that the first air in the fan chamber of the first fan 81 and the first air in the fan chamber of the second fan 82 2 It is possible to suppress heat exchange with the air and prevent the temperature of the first air from rising. Since the fan motor 8 is arranged in the space where the second fan 82 is provided, the fan motor 8 can be cooled by the second air, that is, the exhaust gas. As a result, the fan motor 8 can be efficiently cooled by utilizing the cooling heat of the second air (exhaust) without raising the temperature of the first air (supply air) conveyed by the first fan 81. ..

In the air conditioner 1 according to one aspect of the present disclosure, the first outlet 71 and the second outlet 72 are provided on the same side surface of the housing 11, and the second outlet 72 is the second outlet. 1 It faces the direction of the air outlet 71.

In this embodiment, in the first outlet 71 and the second outlet 72 provided on the same side surface of the housing 11, the second outlet 72 is provided toward the first outlet 71. .. Therefore, for example, when the outlet duct 711 made of a long body is attached to the first outlet 71, it is attached to the first outlet 71 by the second air blown out as exhaust from the second outlet 72. The temperature of the ambient air (atmospheric temperature) of the outlet duct 711 is lowered, and the temperature of the first air (supply air) blown out from the outlet duct 711 is raised by the outside air (air outside the housing 11). It can be suppressed.

(Appendix 4: Mobile M, pump control)
The air conditioner 1 according to one aspect of the present disclosure is provided with a cooling unit 3 for cooling the air blown into the air-conditioned space by latent heat of water, a housing 11 for accommodating the cooling unit 3, and an outside of the housing 11. A tank 12 for storing water to be supplied to the cooling unit 3 is provided, and the housing 11 and the tank 12 are connected by a water channel through which the water flows.

In this embodiment, the tank 12 for storing the water supplied to the cooling unit 3 is provided outside the housing 11 for storing the cooling unit 3, and the tank 12 and the housing 11 are made of, for example, a soft resin. It is connected by a hose or a water channel composed of pipes made of hard resin. That is, the tank 12 is configured as a separate body from the housing 11 corresponding to the main body of the air conditioner 1. Therefore, the weight of the housing 11 (the main body of the air conditioner 1) can be reduced, and the degree of freedom of mounting when the housing 11 is placed in any place can be improved. Further, the housing 11 constituting the air conditioner 1 and the tank 12 can be placed separately from each other, and the degree of freedom in mounting the air conditioner 1 can be improved.

In the air conditioner 1 according to one aspect of the present disclosure, the housing 11 and the tank 12 are mounted on the moving body M, and the portion of the moving body M on which the tank 12 is mounted is the housing. It is located below the site of the moving body M on which the 11 is placed.

In this embodiment, when the air conditioner 1 is mounted on a moving body M made of a vehicle such as a forklift or a tractor, the housing 11 and the tank 12 are separated from each other and mounted on a separate portion of the moving body M. Will be placed. Since the portion of the moving body M on which the tank 12 is placed is located below the portion of the moving body M on which the housing 11 is placed, liquid water that has not been vaporized is contained in the housing. Even if it remains inside the tank 12, the unvaporized water can be recovered in the tank 12 by gravity. As a result, the amount of water remaining inside the housing 11 can be reduced, and the hygiene level inside the housing 11 can be improved. By placing the tank 12 below the housing 11, the accessibility (touchability) to the tank 12 can be improved, and the work of replenishing the tank 12 with water can be facilitated.

In the air conditioner 1 according to one aspect of the present disclosure, the moving body M is a forklift, and the portion of the moving body M on which the housing 11 is mounted is the upper part of the head guard of the forklift. The portion of the moving body M on which the tank 12 is placed is the upper part of the balance weight of the forklift.

In this embodiment, when the air conditioner 1 is mounted on the forklift, the housing 11 is mounted on the upper part of the head guard of the forklift, and the tank 12 is mounted on the upper part of the balance weight of the forklift. The balance weight corresponds to a portion having a high ratio in the weight distribution of the forklift, and the tank 12 mounted on the balance weight is located closer to the center of gravity of the forklift than the housing 11 mounted on the head guard. It is placed in. As a result, it is possible to alleviate the violence of the liquid level in the tank 12 due to the vibration caused by the movement of the moving body M, and to efficiently supply water from the tank 12 to the cooling unit 3.

In the air conditioner 1 according to one aspect of the present disclosure, the housing 11 is provided with an outlet duct 711 extending toward the peripheral space of the operator of the moving body M, which is the air-conditioned space.

In this embodiment, since the outlet duct 711 provided in the housing 11 extends toward the peripheral space of the operator of the moving body M, the housing 11 is placed on any part of the moving body M. Even when it is placed, the cooled air can be blown out to the surrounding space of the operator of the moving body M through the blowout duct 711.

In the air conditioner 1 according to one aspect of the present disclosure, the water channel includes a supply water channel 91 for supplying water to the cooling unit 3 and a recovery water channel 92 for recovering water not vaporized by the cooling unit 3. , The tank 12, the supply channel 91, the cooling unit 3, and the recovery channel 92 form a circulation circuit in which water circulates.

In this embodiment, the water channel connecting the housing 11 and the tank 12 includes a supply water channel 91 for supplying water to the cooling unit 3 and a recovery water channel 92 for collecting water that has not been vaporized by the cooling unit 3. Starting from the tank 12, a circulation circuit is formed in which water circulates in the order of the tank 12, the supply water channel 91, the cooling unit 3, and the recovery water channel 92. That is, by having the circulation circuit, the air conditioner 1 can collect the water not vaporized by the cooling unit 3 into the tank 12 and supply the unvaporized water to the cooling unit 3 again. It is possible to suppress the amount of water consumed and reduce the number of times water is replenished into the tank 12.

In the air conditioner 1 according to one aspect of the present disclosure, the cooling unit 3 includes a first vaporization filter 31 for cooling the first air blown out as supply air into the air-conditioned space, and the first air. The circulation circuit includes a second vaporization filter 32 for cooling the second air blown out as exhaust to the outside of the housing 11 after the actual heat exchange, and the circulation circuit is a water channel via the first vaporization filter 31. And a branch path branching into a water channel via the second vaporization filter 32.

In this embodiment, since the air conditioner 1 includes two vaporization filters including a first vaporization filter 31 for cooling the first air and a second vaporization filter 32 for cooling the second air, it has a cooling capacity. Can be improved. The circulation circuit branches into a water channel (first supply water channel 911, first recovery water channel 921) via the first vaporization filter 31 and a water channel (second supply water channel 912, second recovery water channel 922) via the two vaporization filters. A branch passage, a water channel via the branched first vaporization filter 31, and a water channel via the second vaporization filter include a confluence channel where they merge. As a result, a parallel path consisting of a water channel communicating with the first vaporization filter 31 and a water channel communicating with the second vaporization filter 32 is configured as a part of the circulation circuit. Therefore, the first vaporization filter 31 and the second vaporization are performed. Water can be efficiently supplied to the filter 32.

The air conditioner 1 according to one aspect of the present disclosure includes a water supply pump 913 for transporting water flowing through the supply water channel 91 and a recovery pump 923 for transporting water flowing through the recovery water channel 92.

In this embodiment, since the air conditioner 1 includes a water supply pump 913 provided in the supply water channel 91 and a recovery pump 923 provided in the recovery water channel 92, for example, the air conditioner 1 is mounted on the moving body M and the movement thereof. Even when the posture of the air conditioner 1 changes due to the condition of the road surface on which the body M moves and the housing 11 and the tank 12 are tilted, the water flowing through the supply water channel 91 and the recovery water channel 92 is surely transported. Can be done.

In the air conditioner 1 according to one aspect of the present disclosure, the recovery water sensor 924 for detecting the water flowing in the recovery water channel 92 is communicably connected to the recovery water sensor 924, the water supply pump 913, and the recovery pump 923. A controller 130 is provided, and the controller 130 controls the drive of the water supply pump 913 and the recovery pump 923 based on the sensor value output from the recovery water sensor 924.

In this embodiment, the air conditioner 1 includes a controller 130 composed of, for example, a microcomputer or the like, and the controller 130 is based on a sensor value output from a recovery water sensor 924 that detects water flowing in the recovery water channel 92. Drive control of the water supply pump 913 and the recovery pump 923 is performed. The amount of vaporization of water supplied from the tank 12 varies depending on the usage environment of the air conditioner 1, that is, the temperature and absolute humidity of the air sucked by the air conditioner 1, and the water flowing in the recovery water channel 92 is a cooling unit. It is water that remains in a liquid state without being vaporized in 3. Therefore, by controlling the drive of the water supply pump 913 and the recovery pump 923 based on the sensor value from the recovery water sensor 924, it is possible to optimize the amount of water to be supplied according to the usage environment of the air conditioner 1.

In the air conditioner 1 according to one aspect of the present disclosure, when the controller 130 indicates that the sensor value output from the recovery water sensor 924 indicates that the amount of water flowing through the recovery water channel 92 is a predetermined amount or more, the water supply. Stop the pump 913.

In this embodiment, when the sensor value output from the recovery water sensor 924 indicates that the amount of water flowing in the recovery water channel 92 is equal to or more than a predetermined amount, the controller 130 stops the water supply pump 913, and the sensor value further increases. When it is shown that the amount of water flowing in the recovery water channel 92 is less than a predetermined amount, the water supply pump 913 may be driven. By setting the predetermined amount to, for example, 0 [kg / s] as the mass flow rate, the controller 130 can control the stop and drive of the water supply pump 913 based on the presence or absence of water flowing in the recovery water channel 92. When there is water flowing in the recovery water channel 92 (water is flowing in the recovery water channel 92), it indicates that the water remains in the liquid state without being vaporized in the cooling unit 3, and the controller 130 supplies water. By stopping the pump 913, it is possible to prevent excessive supply of water to the cooling unit 3 and improve the vaporization efficiency.

In the air conditioner 1 according to one aspect of the present disclosure, the controller 130 performs intermittent operation by repeatedly driving and stopping the water supply pump 913 and the recovery pump 923.

In this embodiment, since the controller 130 performs intermittent operation by repeatedly driving and stopping the water supply pump 913 and the recovery pump 923, it is possible to prevent the cooling unit 3 from being excessively supplied with water.

In the air conditioner 1 according to one aspect of the present disclosure, the controller 130 provides a predetermined delay time between the drive start time of the water supply pump 913 and the drive start time of the recovery pump 923, and the water supply pump Drive control of 913 and the recovery pump 923 is performed.

In this embodiment, the controller 130 periodically performs intermittent operation by repeatedly driving and stopping the water supply pump 913 and the recovery pump 913, and the drive start time of the water supply pump 913 and the drive of the recovery pump 923 in the same cycle. A predetermined delay time is provided between the start time point and the water supply pump 913 and the recovery pump 923. That is, when the water supply pump 913 starts driving, the recovery pump 923 has not started driving, and the recovery pump 923 has stopped. For a while after the drive of the water supply pump 913 is started and the supply of water to the cooling unit 3 is started, the supplied water is contained in the cooling unit 3 as a vaporization filter (first vaporization filter 31, Since it tends to be absorbed by the second vaporization filter 32), there is a concern that it will slip even if the recovery pump 923 is driven. On the other hand, by providing a predetermined delay time between the drive start time of the water supply pump 913 and the drive start time of the recovery pump 923, it is possible to prevent the recovery pump 923 from being driven unnecessarily and to prevent the recovery pump 923 from being driven unnecessarily. It is possible to reduce the power consumption due to the above.

In the air conditioner 1 according to one aspect of the present disclosure, the controller 130 drives the water supply pump 913 and the recovery pump 923 by making the drive time of the recovery pump 923 longer than the drive time of the water supply pump 913. Take control.

In this embodiment, the controller 130 drives the recovery pump 923 longer than the water supply pump 913 to reliably recover the water staying in the cooling unit 3 and reduce the amount of water remaining inside the housing 11. , The degree of hygiene in the housing 11 can be improved.

The embodiments disclosed this time should be considered to be exemplary in all respects and not restrictive. The scope of the present invention is indicated by the scope of claims, not the above-mentioned meaning, and is intended to include all modifications within the meaning and scope equivalent to the scope of claims.

1 Air conditioner 11 Housing (main body)
111 Door part 112 Suppressing member 12 Tank (separate body)
13 Electric unit 130 Controller 131 Board 132 Heat transfer promotion member 133 Sealing plate 3 Cooling unit 31 1st vaporization filter 32 2nd vaporization filter 33 Water supply part 33A 1st water supply part 33B 2nd water supply part 331 1st water supply hole 332 2nd Water supply hole 333 Container part 334 Top surface part 335 Pipe part 336 Extraction hole 337 Water receiving wall 34 Drain pan (connecting member)
4 Heat exchanger 41 1st path 42 2nd path 431 1st inlet side opening surface 432 2nd inlet side opening surface 441 1st outlet side opening surface 442 2nd outlet side opening surface 5 Suction port 51 Suction flow path (upstream) Side space)
52 Branch flow path (downstream space)
53 Dust collection filter 531 Seal member 61 1st flow path 62 2nd flow path 71 1st outlet 711 Outlet duct 72 2nd outlet 8 Fan motor 81 1st fan 82 2nd fan 83 Partition plate 84 Fan casing 841 Through hole 91 Supply water channel 911 1st supply water channel 912 2nd supply water channel 913 Water supply pump 914 Supply water sensor 92 Recovery water channel 921 1st recovery water channel 922 2nd recovery water channel 923 Recovery pump 924 Recovery water sensor 991 1st water supply area 992 2nd water supply area M moving body (fork lift)

Claims (13)

A housing having a first outlet and a second outlet,
The first flow path communicating with the first outlet and
A second flow path communicating with the second outlet and
A sensible heat exchanger that exchanges sensible heat between the first air flowing through the first flow path and the second air flowing through the second flow path.
A first vaporization filter that cools the first air by the latent heat of water,
A second vaporization filter that cools the second air by the latent heat of water is provided.
The first vaporization filter is provided on the downstream side of the visible heat exchanger in the flow direction of the first air.
The second vaporization filter is an air conditioner provided on the upstream side of the manifest heat exchanger in the flow direction of the second air. The air conditioner according to claim 1, wherein the first vaporization filter and the second vaporization filter are fastened in an L shape by a fastening member. The air conditioner according to claim 2, wherein the fastening member is a drain pan that receives water that has not been vaporized by the first vaporization filter and the second vaporization filter. The first aspect of the present invention is characterized in that the inner surface of the housing and the end surface of the heat exchanger facing the inner surface are housed in the housing so as to form an acute angle. The air conditioner according to any one of items 3. The sensible heat exchanger includes a first path through which the first air flows and a second path through which the second air flows.
The first vaporization filter covers the outlet of the first path.
The air conditioner according to any one of claims 1 to 4, wherein the second vaporization filter covers the inlet of the second path. In forming the orthogonal flow in the sensible heat exchanger, the first path and the second path are provided so as to intersect each other.
A claim characterized in that the angle formed by each of the one surface of the first vaporization filter and the second vaporization filter facing the exposed heat exchanger is equal to or larger than the crossing angle of the first path and the second path. Item 5. The air conditioner according to Item 5. The face-to-face distance between the first outlet-side opening surface provided with the outlet of the first path in the heat exchanger and the inner surface of the housing facing the first outlet-side opening surface is the first. The air conditioner according to claim 5 or 6, wherein the air conditioner becomes larger toward the downstream side of the air. The housing is provided with a suction port for sucking the first air and the second air.
A dust collecting filter interposed between the suction port and the heat exchanger is provided.
The one according to any one of claims 5 to 7, wherein the dust collecting filter is provided so as to be curved so as to cover the inlet of the first path and the inlet of the second path. air conditioner. The air conditioner according to claim 8, wherein sealing members are provided at both ends of each of the dust collecting filters. The space between the sensible heat exchanger and the suction port is divided into an upstream space and a downstream space in the flow direction of the first air and the second air by the dust collecting filter.
In the downstream space, a branch flow path is formed in which the suction air sucked from the suction port is divided into the first air flowing in the first path and the second air flowing in the second path. The air conditioner according to claim 8 or 9, wherein the air conditioner is characterized by the above. The air conditioner according to claim 10, wherein the upstream space is provided with a supply water channel for supplying water to the first vaporization filter or the second vaporization filter. In the housing, a door portion configured to be openable and closable is provided on the side surface on the side where the first vaporization filter is provided.
The first aspect of the present invention is characterized in that the inner surface of the door portion is provided with a suppressing member for suppressing the intrusion of air into the first flow path without passing through the first vaporization filter. Item 12. The air conditioner according to any one of items 11. A tank provided outside the housing and
A supply channel for supplying water in the tank to the first vaporization filter and the second vaporization filter, and
The invention according to any one of claims 1 to 12, further comprising a recovery channel for collecting the water not vaporized by the first vaporization filter and the second vaporization filter in the tank. Air conditioner.

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