JP2018087659A - Drain water evaporating device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a drain water evaporating device that can efficiently evaporate drain water.SOLUTION: A drain water evaporating device comprises an evaporating dish, and an evaporating plate installed at a dropping position of drain water on the evaporating dish. The evaporating plate comprises a first flat plate part, and a second flat plate part arranged above the first flat plate part so as to overlap with at least a portion of the first flat plate part when viewed in a vertical direction. The first flat plate part comprises a first end side in contact with a bottom part of the evaporating dish, and a second end side arranged at a height greater than that of the first end side. The second flat plate part comprises a third end side connected to the second end side, and a fourth end side arranged at the same height as that of the third end side or at a height greater than that of the third end side.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a drain water evaporator for evaporating drain water.

  Patent Document 1 describes a low-temperature showcase including an evaporating dish. The evaporating dish of this low temperature showcase is provided with an evaporating plate for sucking up drain water from the evaporating dish by capillary action. The drain water sucked up by the evaporation plate is forcibly evaporated by the high-temperature exhaust ventilated by the condenser blower.

Japanese Patent Laid-Open No. 10-318662

  However, in the configuration described in Patent Document 1, if the water absorption of the evaporation plate decreases due to aging or the like, the drain water in the evaporation dish cannot be sucked up by the evaporation plate. Thereby, since it becomes impossible to evaporate drain water efficiently, there existed a subject that drain water might overflow from an evaporating dish.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a drain water evaporator that can efficiently evaporate drain water.

  The drain water evaporator according to the present invention includes an evaporating dish and an evaporating plate installed on the evaporating dish at a drain water dropping position, and the evaporating plate includes a first flat plate portion and a vertical direction. And a second flat plate portion disposed above the first flat plate portion so as to overlap with at least a part of the first flat plate portion, the first flat plate portion of the evaporating dish. A second end side disposed at a height higher than the first end side, and the second flat plate portion is connected to the second end side. And the fourth end side arranged at the same height as the third end side or higher than the third end side.

  According to the present invention, dripped drain water reaches the evaporating dish through at least the second flat plate portion and the first flat plate portion of the evaporating plate. Therefore, since it is possible to lengthen the time until the drained water reaches the evaporating dish, the drain water can be efficiently evaporated even if the water absorption of the evaporating plate decreases.

It is a figure which shows typically the principal part structure of a refrigerating-cycle apparatus provided with the drain water evaporator 1 which concerns on Embodiment 1 of this invention. It is sectional drawing which shows the structure of the drain water evaporator 1 which concerns on Embodiment 1 of this invention. It is a perspective view which shows the structure of a part of supporting member 30 of the drain water evaporator 1 which concerns on Embodiment 1 of this invention. It is sectional drawing which shows the structure of the drain water evaporator 1 which concerns on Embodiment 2 of this invention. It is sectional drawing which shows the structure of the drain water evaporator 1 which concerns on Embodiment 3 of this invention. It is a top view which shows the structure of the flat plate part 21 and the flat plate part 41 in the evaporation plate 20 of the drain water evaporation apparatus 1 which concerns on Embodiment 3 of this invention. It is a perspective view which shows the structure of a part of supporting member 33 of the drain water evaporator 1 which concerns on Embodiment 3 of this invention.

Embodiment 1 FIG.
A drain water evaporator according to Embodiment 1 of the present invention will be described. The drain water evaporator according to the present embodiment evaporates drain water generated in the heat exchanger of the refrigeration cycle apparatus. As a refrigerating cycle apparatus provided with a drain water evaporator, there is a showcase installed in a store such as a supermarket, for example.

  FIG. 1 is a diagram schematically illustrating a main configuration of a refrigeration cycle apparatus including a drain water evaporation apparatus 1 according to the present embodiment. In addition, the positional relationship (for example, up-and-down relationship) between each structural member in a specification is a thing when the drain water evaporator 1 and a refrigerating cycle apparatus provided with it are installed in the state which can be used in principle. is there. As shown in FIG. 1, the refrigeration cycle apparatus has a heat exchanger 101 that functions as a cooler by absorbing heat of evaporation of refrigerant from outside. When the temperature of the heat exchanger 101 is 0 ° C. or lower, a defrosting operation for melting frost adhering to the surface of the heat exchanger 101 is periodically performed, for example, once every few hours. Is called. In this case, in the heat exchanger 101, a predetermined amount of drain water is generated every time the defrosting operation is performed due to melting of frost.

  A drain pan 102 that receives drain water from the heat exchanger 101 is provided below the heat exchanger 101. A drain port 103 for draining drain water in the drain pan 102 is formed at the bottom of the drain pan 102. A drain hose 104 is connected to the drain port 103. The drain water drained from the drain pan 102 flows through the drain hose 104 and is dropped downward from the outlet 104 a of the drain hose 104. A drain water evaporating apparatus 1 that evaporates dripped drain water is disposed directly below the outlet 104 a of the drain hose 104. The drain water evaporator 1 may be supplied with air (for example, warm air after cooling the compressor or the condenser) that promotes evaporation of the drain water by a blower.

  FIG. 2 is a cross-sectional view showing the configuration of the drain water evaporator 1 according to the present embodiment. As shown in FIG. 2, the drain water evaporator 1 includes an evaporating dish 10 that stores drain water, an evaporating plate 20 installed on the evaporating dish 10, and support members 30 and 31 that support the evaporating plate 20. Have.

  The evaporation plate 20 is disposed at a position where the drain water 110 is dropped (for example, directly below the outlet 104a of the drain hose 104 shown in FIG. 1). The evaporation plate 20 is formed of a material having water absorption, such as a nonwoven fabric or a porous body. The evaporation plate 20 has a bellows-like shape in which a flat plate-like member that is long in one direction is bent at an acute angle at a plurality of corners. The evaporation plate 20 is arranged vertically so that the adjacent direction of the bellows peaks is the vertical direction. The lower end portion of the evaporation plate 20 is in contact with the bottom portion 11 of the evaporation dish 10. The evaporating plate 20 has a function of sucking drain water from the evaporating dish 10 by surface tension and a function of gradually leading the dripped drain water 110 to the evaporating dish 10 according to gravity while meandering.

  The evaporation plate 20 has a plurality of flat plate portions 21, 22, 23, 24, 25, 26, 27 arranged so as to overlap each other when viewed in the vertical direction. The flat plate portions 21, 22, 23, 24, 25, 26, and 27 are arranged in this order from the bottom to the top. Each of the flat plate portions 21, 22, 23, 24, 25, 26, and 27 has a rectangular flat plate shape. The flat plate portions 21, 22, 23, 24, 25, 26, 27 are such that the drained drain water 110 is guided by meandering the flat plate portions 27, 26, 25, 24, 23, 22, 21 in this order. Both are inclined with respect to the horizontal plane. The flat plate portions 21, 23, 25, and 27 are inclined at an acute angle with respect to the horizontal plane so that the left side in FIG. 2 is low, and the flat plate portions 22, 24, and 26 are low on the right side in FIG. Inclined at an acute angle to the horizontal plane. That is, two adjacent flat plate portions are inclined in directions opposite to each other with respect to the horizontal plane. Two adjacent flat plate portions are connected to each other through an acute corner portion. Thereby, the lower surface of the upper flat plate portion of the two adjacent flat plate portions faces the upper surface of the lower flat plate portion. In addition, as long as two adjacent flat plate portions are connected to each other through an acute corner portion, some of the flat plate portions may be arranged horizontally. For example, when the flat plate portions 21, 23, 25, and 27 are inclined with respect to the horizontal plane, the flat plate portions 22, 24, and 26 may be arranged horizontally.

  The flat plate portion 21 (an example of the first flat plate portion) disposed at the lowest position has an end side 21a (an example of the first end side) that contacts the bottom portion 11 of the evaporating dish 10 and a height higher than the end side 21a. And an end side 21b (an example of a second end side) disposed on the side. In the flow of dripped drain water 110, the end side 21 a is located at the downstream end of the flat plate portion 21, and the end side 21 b is located at the upstream end of the flat plate portion 21. The flat plate portion 21 is inclined so that the end side 21a side is lowered. The end side 21 a becomes a lower end portion of the evaporation plate 20.

  The flat plate portion 22 (an example of the second flat plate portion) includes an end side 22a (an example of a third end side) connected to the end side 21b of the flat plate portion 21, and an end disposed at a height higher than the end side 22a. Side 22b (an example of the fourth end side). In the flow of dripped drain water 110, the end side 22 a is located at the downstream end of the flat plate portion 22, and the end side 22 b is located at the upstream end of the flat plate portion 22. The flat plate portion 22 is inclined so that the end side 22a side is lowered. The end side 22 b is located above the end side 21 a of the flat plate portion 21. By connecting the end side 22a of the flat plate portion 22 and the end side 21b of the flat plate portion 21, the flat plate portion 22 and the flat plate portion 21 are connected via a corner portion.

  The flat plate portion 23 has an end side 23a connected to the end side 22b of the flat plate portion 22, and an end side 23b arranged at a height higher than the end side 23a. In the flow of dripped drain water 110, the end side 23 a is located at the downstream end of the flat plate portion 23, and the end side 23 b is located at the upstream end of the flat plate portion 23. The flat plate portion 23 is inclined so that the end side 23a side is lowered. The end side 23 b is located above the end side 22 a of the flat plate portion 22. By connecting the end side 23a of the flat plate portion 23 and the end side 22b of the flat plate portion 22, the flat plate portion 23 and the flat plate portion 22 are connected via a corner portion.

  The flat plate portion 24 has an end side 24a connected to the end side 23b of the flat plate portion 23, and an end side 24b arranged at a height higher than the end side 24a. In the flow of the drain water 110 dropped, the end side 24 a is located at the downstream end of the flat plate portion 24, and the end side 24 b is located at the upstream end of the flat plate portion 24. The flat plate portion 24 is inclined such that the end side 24a side is lowered. The end side 24 b is located above the end side 23 a of the flat plate portion 23. By connecting the end side 24a of the flat plate portion 24 and the end side 23b of the flat plate portion 23, the flat plate portion 24 and the flat plate portion 23 are connected via a corner portion.

  The flat plate portion 25 has an end side 25a connected to the end side 24b of the flat plate portion 24, and an end side 25b arranged at a height higher than the end side 25a. In the flow of dripped drain water 110, the end side 25 a is located at the downstream end of the flat plate portion 25, and the end side 25 b is located at the upstream end of the flat plate portion 25. The flat plate portion 25 is inclined so that the end side 25a side is lowered. The end side 25 b is located above the end side 24 a of the flat plate portion 24. By connecting the end side 25a of the flat plate part 25 and the end side 24b of the flat plate part 24, the flat plate part 25 and the flat plate part 24 are connected via a corner part.

  The flat plate portion 26 includes an end side 26a connected to the end side 25b of the flat plate portion 25, and an end side 26b disposed at a height higher than the end side 26a. In the flow of dripped drain water 110, the end side 26 a is located at the downstream end of the flat plate portion 26, and the end side 26 b is located at the upstream end of the flat plate portion 26. The flat plate portion 26 is inclined so that the end side 26a side is lowered. The end side 26 b is located above the end side 25 a of the flat plate portion 25. By connecting the end side 26a of the flat plate portion 26 and the end side 25b of the flat plate portion 25, the flat plate portion 26 and the flat plate portion 25 are connected via a corner portion.

  The uppermost flat plate portion 27 has an end side 27a connected to the end side 26b of the flat plate portion 26, and an end side 27b arranged at a height higher than the end side 27a. . In the flow of dripped drain water 110, the end side 27 a is located at the downstream end of the flat plate portion 27, and the end side 27 b is located at the upstream end of the flat plate portion 27. The flat plate portion 27 is inclined so that the end side 27a side is lowered. The end side 27 b is located above the end side 26 a of the flat plate portion 26. The end side 27 b becomes the upper end portion of the evaporation plate 20. Drain water 110 is dripped onto the upper surface of the flat plate portion 27 from above. That is, the flat plate portion 27 has a dripping region where the drain water 110 is dripped on the upper surface. The position of the dropping region may be anywhere as long as it is the upper surface of the flat plate portion 27.

  The support member 30 is disposed on the left side of the evaporation plate 20 in FIG. The support member 31 is disposed on the right side of the evaporation plate 20 in FIG. 2 and sandwiches the evaporation plate 20 with the support member 30. The support members 30 and 31 support the upper end portion, the lower end portion, and the plurality of corner portions of the evaporation plate 20. The support members 30 and 31 are both installed on the evaporating dish 10.

  FIG. 3 is a perspective view showing a partial configuration of the support member 30 of the drain water evaporator 1 according to the present embodiment. As shown in FIG. 3, the support member 30 has a flat plate shape that is long in the vertical direction. A plurality of triangular or trapezoidal notches 32 are formed on one side surface 30a of the support member 30 at regular intervals in the vertical direction. In each of the notches 32, the upper end portion, the lower end portion or one corner portion of the evaporation plate 20 is inserted.

  The support member 31 has the same configuration as the support member 30 except that the notches 32 are arranged with a half-pitch shift in the vertical direction.

  By supporting the evaporation plate 20 by the support members 30 and 31, the evaporation plate 20 is reinforced and the bellows pitch of the evaporation plate 20 is maintained. Each of the support members 30 and 31 is formed of a material having a lower hydrophilicity than the evaporation plate 20 or a material having a lower water absorption than the evaporation plate 20. Thereby, it is possible to prevent drain water that is dropped from above and to be guided by the evaporation plate 20 from being short-circuited along the support member 30 or the support member 31 and flowing down. A plurality of support members 30 and 31 may be provided in a direction perpendicular to the paper surface of FIG.

  Next, the operation of the drain water evaporator 1 according to the present embodiment will be described. When the drain water 110 is dropped on the flat plate portion 27 of the evaporation plate 20, the dropped drain water is absorbed by the flat plate portion 27. The drain water absorbed by the flat plate portion 27 is gradually guided downward along the evaporation plate 20 and meanders through a long path formed by the flat plate portions 27, 26, 25, 24, 23, 22, 21. Thereby, since the path length of the drain water from the position where drain water is dripped to the evaporating dish 10 can be lengthened, the time from when the drain water is dripped until it reaches the evaporating dish 10 can be lengthened. Therefore, most of the drain water can be efficiently evaporated before reaching the evaporating dish 10. The drain water that has reached the evaporating dish 10 without evaporating by the evaporating plate 20 is temporarily stored in the evaporating dish 10 and sucked up by the evaporating plate 20 by capillary action. Thereby, the drain water which reached the evaporating dish 10 can also be evaporated.

  The hydrophilicity of the evaporation plate 20 may be reduced due to deterioration over time. When the hydrophilicity of the evaporation plate 20 decreases, the water absorption of the evaporation plate 20 also decreases due to the decrease in surface tension. When the water absorption of the evaporation plate 20 decreases, the drain water in the evaporation dish 10 is not easily sucked up by the evaporation plate 20. However, in this embodiment, since the path length of the drain water from the position where the drain water is dripped to the evaporating dish 10 can be increased, the time from when the drain water is dripped until it reaches the evaporating dish 10 is increased. Can do. Therefore, even if the drain water in the evaporating dish 10 becomes difficult to be sucked up due to the decrease in water absorption of the evaporating plate 20, most of the drain water is efficiently evaporated from when the drain water is dripped until it reaches the evaporating dish 10. be able to.

  In addition, when the hydrophilicity or water absorption of the evaporation plate 20 is lowered, a part of the drain water dripped onto the flat plate portion 27 is not absorbed by the flat plate portion 27 and the flat plate portions 27, 26, 25, 24, 23, 22. , 21 may flow along the upper surface or the lower surface, respectively. However, in this embodiment, even in such a case, since the path length of the drain water can be increased, the time from when the drain water is dripped until it reaches the evaporating dish 10 can be increased. Therefore, drain water can be efficiently evaporated. That is, according to the present embodiment, it is possible to realize the drain water evaporation apparatus 1 that is not easily affected by the decrease in hydrophilicity or water absorption of the evaporation plate 20.

  As described above, the drain water evaporator 1 according to the present embodiment includes the evaporating dish 10 and the evaporating plate 20 installed on the evaporating dish 10 at the drain water dropping position. The evaporation plate 20 includes a flat plate portion 21 (an example of a first flat plate portion) and a flat plate portion 22 (second flat plate) disposed above the flat plate portion 21 so as to overlap at least a part of the flat plate portion 21 when viewed in the vertical direction. An example). The flat plate portion 21 has an end side 21a (an example of a first end side) that contacts the bottom 11 of the evaporating dish 10 and an end side 21b (an example of a second end side) disposed at a height higher than the end side 21a. And have. The flat plate portion 22 is an end 22a (an example of a third end side) connected to the end side 21b of the flat plate portion 21 and an end disposed at the same height as the end side 22a or higher than the end side 22a. Side 22b (an example of the fourth end side).

  According to this configuration, the dripped drain water reaches the evaporating dish 10 through at least the flat plate portion 22 and the flat plate portion 21 of the evaporating plate 20. Thereby, time until dripped drain water reaches the evaporating dish 10 can be lengthened. Therefore, even if the water absorption of the evaporation plate 20 decreases, the drain water can be efficiently evaporated before the dripped drain water reaches the evaporating dish 10.

  Further, the drain water evaporator 1 according to the present embodiment further includes support members 30 and 31 that support the evaporation plate 20. The support members 30 and 31 are made of a material that is less hydrophilic than the evaporation plate 20. According to this configuration, the dripped drain water can be prevented from flowing down along the support members 30 and 31.

  Moreover, in the drain water evaporation apparatus 1 which concerns on this Embodiment, since two adjacent flat plate parts are connected via the corner | angular part of an acute angle, the occupying volume of the evaporation plate 20 is made small, and the evaporation plate 20 of the evaporation plate 20 is made small. The surface area can be increased.

Embodiment 2. FIG.
A drain water evaporator according to Embodiment 2 of the present invention will be described. FIG. 4 is a cross-sectional view showing the configuration of the drain water evaporator 1 according to the present embodiment. In addition, about the component which has the function and effect | action same as Embodiment 1, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  As shown in FIG. 4, the flat plate portion 22 is formed with one or a plurality of openings 22c penetrating the flat plate portion 22 in the thickness direction (FIG. 4 shows four openings 22c). ). The opening 22c is formed closer to the end side 22a than the intermediate part between the end side 22a and the end side 22b of the flat plate part 22 (for example, a portion adjacent to the end side 22a). Similarly, in the flat plate portions 23, 24, 25, 26, and 27, one or a plurality of openings 23c, 24c, 25c, 26c, and 27c penetrating the flat plate portion in the thickness direction are formed. The openings 23c, 24c, 25c, 26c, and 27c have end sides 23a, 24a, and more than intermediate portions between the end sides 23a, 24a, 25a, 26a, and 27a and the end sides 23b, 24b, 25b, 26b, and 27b. It is formed closer to 25a, 26a and 27a. Each of these openings 22c, 23c, 24c, 25c, 26c, and 27c is formed so that drain water can pass from the upper surface side to the lower surface side of each flat plate portion. In the flat plate portion 21 arranged at the lowest position, openings such as the openings 22c, 23c, 24c, 25c, 26c, and 27c are not formed.

  The reason why the opening 27c is formed in the flat plate portion 27 will be described. In the configuration as in the first embodiment, when the hydrophilicity of the flat plate portion 27 decreases, a part of the drain water dripped onto the flat plate portion 27 is not absorbed by the flat plate portion 27 but along the upper surface of the flat plate portion 27. May flow. In this case, part of the drain water that has reached the end side 27 a of the flat plate portion 27 may not flow along the flat plate portion 26 but may flow down to the evaporating dish 10 along the support member 30. For this reason, even if there exists a flat plate portion that can absorb water below the flat plate portion 27, it becomes difficult to supply drain water to the flat plate portion. Therefore, the drain water may not always be efficiently evaporated.

  However, in the present embodiment, the drain water flowing along the upper surface of the flat plate portion 27 can be made to flow to the lower flat plate portion 26 through the opening portion 27c. For this reason, even if the hydrophilicity of the flat plate portion 27 is lowered, drain water can be supplied to the flat plate portion below the flat plate portion 27. Further, since the opening 27c is formed closer to the end side 27a than the intermediate portion between the end side 27a and the end side 27b, the drain water path is hardly shortened. Therefore, drain water can be evaporated more efficiently.

  Although the reason why the opening portion 27c is formed in the flat plate portion 27 has been described here, the opening portions 22c, 23c, 24c, 25c, and 26c are formed in the flat plate portions 22, 23, 24, 25, and 26, respectively. The reason is the same.

  As described above, in the drain water evaporation apparatus 1 according to the present embodiment, the flat plate portion 22 (an example of the second flat plate portion) is formed with the opening 22c penetrating the flat plate portion 22 in the thickness direction. Yes. According to this configuration, even if the hydrophilicity of the flat plate portion 22 is lowered, the drain water flowing along the upper surface of the flat plate portion 22 can be flowed to the lower flat plate portion 21 through the opening 22c. Therefore, according to this Embodiment, drain water can be evaporated more efficiently.

Embodiment 3 FIG.
A drain water evaporation apparatus according to Embodiment 3 of the present invention will be described. FIG. 5 is a cross-sectional view showing the configuration of the drain water evaporator 1 according to the present embodiment. In addition, about the component which has the function and effect | action same as Embodiment 1, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  As shown in FIG. 5, the evaporating plate 20 has a plurality of flat plate portions 21, 22, 23, 24, 25, 26, 27 and substantially flat plate portions 21, 22, 23, 24, 25, 26, 27. A plurality of flat plate portions 41, 42, 43, 44, 45, 46, 47 having a symmetric configuration. The flat plate portion 41 intersects with the flat plate portion 21, and the flat plate portion 42 intersects with the flat plate portion 22. Similarly, the flat plate portions 43, 44, 45, 46, and 47 intersect with the flat plate portions 23, 24, 25, 26, and 27, respectively.

  FIG. 6 is a top view illustrating the configuration of the flat plate portion 21 and the flat plate portion 41 in the evaporation plate 20 of the drain water evaporation apparatus 1 according to the present embodiment. As shown in FIG. 6, a slit 21 d (an example of a first slit) is formed in the central portion between the end side 21 a and the end side 21 b of the flat plate portion 21. The slit 21d is cut out from the lower side edge 21e in FIG. 6 of the flat plate portion 21, and extends in parallel with the edge 21a and the edge 21b toward the upper side edge 21f in FIG. Yes. The length of the slit 21d is about half of the width dimension of the flat plate portion 21 (that is, the distance between the side end side 21e and the side end side 21f).

  The flat plate portion 41 (an example of the third flat plate portion) includes an end side 41a (an example of a fifth end side) that contacts the bottom 11 of the evaporating dish 10 and an end side 41b that is disposed at a height higher than the end side 41a. (An example of a sixth end side). A slit 41d (another example of the first slit) is formed in the central portion of the flat plate portion 41 between the end side 41a and the end side 41b. The slit 41d is cut out from the upper side edge 41f in FIG. 6 of the flat plate portion 41, and extends in parallel with the edge 41a and the edge 41b toward the lower edge 41e in FIG. Yes. The length of the slit 41d is about half of the width dimension of the flat plate portion 41 (that is, the distance between the side end side 41e and the side end side 41f).

  The flat plate portion 21 and the flat plate portion 41 are meshed with each other through slits 21d and 41d.

  Returning to FIG. 5, a slit 22 d (an example of a second slit) having the same shape as the slit 21 d is formed in the central portion of the flat plate portion 22 between the end side 22 a and the end side 22 b.

  The flat plate portion 42 (an example of a fourth flat plate portion) is an end 42a (an example of a seventh end side) connected to the end side 41b of the flat plate portion 41 and an end disposed at a height higher than the end side 42a. Side 42b (an example of an eighth end side). A slit (not shown) having the same shape as the slit 41d is formed in the central portion of the flat plate portion 42 between the end side 42a and the end side 42b.

  The flat plate portion 22 and the flat plate portion 42 are meshed with each other through a slit 22 d formed in the flat plate portion 22 and a slit formed in the flat plate portion 42.

  Similarly, in the flat plate portions 23, 24, 25, 26, and 27, in the central portion between the end sides 23a, 24a, 25a, 26a, and 27a and the end sides 23b, 24b, 25b, 26b, and 27b, respectively, Slits 23d, 24d, 25d, 26d, and 27d having the same shape as the slit 21d are formed.

  Of the flat plate portions 43, 44, 45, 46, 47, in the central portions between the end sides 43a, 44a, 45a, 46a, 47a and the end sides 43b, 44b, 45b, 46b, 47b, respectively, a slit 41d and A slit (not shown) having the same shape is formed.

  The flat plate portion 23 and the flat plate portion 43 are meshed with each other through a slit 23 d formed in the flat plate portion 23 and a slit formed in the flat plate portion 43. The flat plate portion 24 and the flat plate portion 44 are meshed with each other through a slit 24 d formed in the flat plate portion 24 and a slit formed in the flat plate portion 44. The flat plate portion 25 and the flat plate portion 45 are meshed with each other through a slit 25 d formed in the flat plate portion 25 and a slit formed in the flat plate portion 45. The flat plate portion 26 and the flat plate portion 46 are meshed with each other through a slit 26 d formed in the flat plate portion 26 and a slit formed in the flat plate portion 46. The flat plate portion 27 and the flat plate portion 47 are meshed with each other through a slit 27 d formed in the flat plate portion 27 and a slit formed in the flat plate portion 47.

  Each flat plate portion 21, 22, 23, 24, 25, 26, 27, 41, 42, 43, 44, 45, 46, 47 of the evaporation plate 20 is supported by a support member 33. The support member 33 is provided on one of the front side or the back side of the flat plate portions 21, 22, 23, 24, 25, 26, 27, 41, 42, 43, 44, 45, 46, 47 in FIG. Yes. In the case where the support member 33 is provided on the back side, the support member 33 supports the central portion between both side edges of the flat plate portions 21, 22, 23, 24, 25, 26, and 27. Accordingly, the flat plate portions 21, 22, 23, 24, 25, 26, 27 are directly supported by the support member 33. Since the flat plate portions 41, 42, 43, 44, 45, 46, and 47 are meshed with the flat plate portions 21, 22, 23, 24, 25, 26, and 27, they are indirectly supported by the support member 33. .

  FIG. 7 is a perspective view showing a partial configuration of the support member 33 of the drain water evaporation apparatus 1 according to the present embodiment. As shown in FIG. 7, the support member 33 has a flat plate shape that is long in the vertical direction. A plurality of rectangular cutouts 34 are formed on one side surface 33a of the support member 33 at regular intervals in the vertical direction. The respective center portions of the flat plate portions 21, 22, 23, 24, 25, 26, 27 are inserted into the notches 34.

  As described above, in the drain water evaporator 1 according to the present embodiment, the evaporation plate 20 includes the flat plate portion 41 (an example of the third flat plate portion) and at least a part of the flat plate portion 41 when viewed in the vertical direction. And a flat plate portion 42 (an example of a fourth flat plate portion) disposed above the flat plate portion 41 so as to overlap. The flat plate portion 41 has an end side 41a (an example of a fifth end side) that contacts the bottom 11 of the evaporating dish 10 and an end side 41b (an example of a sixth end side) disposed at a height higher than the end side 41a. And have. The flat plate portion 42 includes an end side 42a (an example of a seventh end side) connected to the end side 41b, an end side 42b (an example of an eighth end side) disposed at a height higher than the end side 42a, have. The flat plate portion 21 and the flat plate portion 41 cross each other through slits 21d and 41d (an example of a first slit) formed in at least one of the flat plate portion 21 and the flat plate portion 41. The flat plate portion 22 and the flat plate portion 42 cross each other through a slit 22d (an example of a second slit) formed in at least one of the flat plate portion 22 and the flat plate portion 42.

  In the first embodiment, in order to maintain the bellows pitch, two support members 30 and 31 may be necessary with the evaporation plate 20 interposed therebetween. In contrast, in the present embodiment, the bellows pitch of the evaporation plate 20 can be maintained by the single support member 33. Therefore, according to this Embodiment, the component cost of the drain water evaporation apparatus 1 can be reduced.

  Further, in the first embodiment, in order to further increase the surface area of the evaporation plate 20 while maintaining the occupied volume of the evaporation plate 20, it is necessary to reduce the bending angle of the evaporation plate 20. However, if the bending angle of the evaporation plate 20 is reduced, the flat plate portions are close to each other in the vicinity of the corner portion, and the evaporation efficiency of the drain water may be reduced. In contrast, in the present embodiment, the surface area of the evaporation plate 20 can be increased while maintaining the bending angle of the evaporation plate 20 as compared with the first embodiment. Therefore, according to this Embodiment, drain water can be evaporated more efficiently.

  DESCRIPTION OF SYMBOLS 1 Drain water evaporation apparatus, 10 Evaporating dish, 11 Bottom part, 20 Evaporating plate, 21, 22, 23, 24, 25, 26, 27 Flat plate part, 21a, 21b, 22a, 22b, 23a, 23b, 24a, 24b, 25a 25b, 26a, 26b, 27a, 27b End side, 21d, 22d, 23d, 24d, 25d, 26d, 27d Slit, 21e, 21f Side end, 22c, 23c, 24c, 25c, 26c, 27c Opening, 30 , 31 Support member, 30a Side surface, 32 Notch, 33 Support member, 33a Side surface, 34 Notch, 41, 42, 43, 44, 45, 46, 47 Flat plate portion, 41a, 41b, 42a, 42b, 43a, 43b 44a, 44b, 45a, 45b, 46a, 46b, 47a, 47b end side, 41d slit, 41e, 41f side end side 101 heat exchanger, 102 drain pan 103 drain port, 104 drain hose, 104a outlet, 110 drain water.

Claims (4)

An evaporating dish,
An evaporating plate on the evaporating dish and installed at a drain water dripping position,
The evaporation plate includes a first flat plate portion and a second flat plate portion disposed above the first flat plate portion so as to overlap at least a part of the first flat plate portion when viewed in the vertical direction. And
The first flat plate portion has a first end side that comes into contact with the bottom of the evaporating dish, and a second end side that is disposed at a height higher than the first end side,
The second flat plate portion has a third end side connected to the second end side and a fourth end side arranged at the same height as the third end side or higher than the third end side. And a drain water evaporator.   The drain water evaporator according to claim 1, wherein the second flat plate portion is formed with an opening that penetrates the second flat plate portion in the thickness direction. The evaporation plate further includes a third flat plate portion and a fourth flat plate portion disposed above the third flat plate portion so as to overlap at least a part of the third flat plate portion when viewed in the vertical direction. And
The third flat plate portion has a fifth end side that contacts the bottom of the evaporating dish, and a sixth end side that is disposed at a height higher than the fifth end side,
The fourth flat plate portion includes a seventh end side connected to the sixth end side, and an eighth end side disposed at a height higher than the seventh end side,
The first flat plate portion and the third flat plate portion intersect each other through a first slit formed in at least one of the first flat plate portion and the third flat plate portion,
The said 2nd flat plate part and the said 4th flat plate part cross | intersect mutually through the 2nd slit formed in at least one of the said 2nd flat plate part and the said 4th flat plate part. The drain water evaporator as described. A support member for supporting the evaporation plate;
The drain water evaporator according to any one of claims 1 to 3, wherein the support member is formed of a material having a lower hydrophilicity than the evaporation plate.

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