ventilation device

Abstract

The ventilation device (10) includes: a housing (11); an exhaust fan (13); an air supply fan (14); a heat exchange element (12) for exchanging heat between air flowing in the exhaust passage (16) and air flowing in the air supply passage (17); a guide rail (40) for guiding the heat exchange element (12); and a water receiving tray (30) having a first water receiving portion (31) disposed on one side of the heat exchange element (12) in a direction perpendicular to the length and vertical direction relative to the heat exchange element (12) and a second water receiving portion (31) disposed on the other side. The water receiving part (32), the holding part (33) disposed between the first water receiving part (31) and the second water receiving part (32) and holding the guide rail (40), and the passage (35) connecting the first water receiving part (31) and the second water receiving part (32); and the sealing member (50) disposed in the passage (35) to obstruct the airflow between the first water receiving part (31) and the second water receiving part (32), and a water passage (36) for water to flow between each water receiving part (31, 32) is formed between the passage (35) and the sealing member (50).

Description

Technical Field

[0001] This disclosure relates to a ventilation device. Background Technology

[0002] Conventionally, a ventilation device is known that simultaneously supplies outdoor air to the interior and exhausts indoor air to the outside, and performs heat exchange between the supply and exhaust air via a heat exchange element (see Patent Document 1). In this ventilation device, condensation sometimes occurs at the heat exchange element, and therefore a drain tray is provided for receiving the condensate generated in the heat exchange element and discharging it to the outside of the device. The drain tray includes: a supply-side drain tray disposed on the outlet side of the supply airflow from the heat exchange element; an exhaust-side drain tray disposed on the outlet side of the exhaust airflow from the heat exchange element; and a passage connecting a first water receiving portion and a second water receiving portion.

[0003] Existing technical documents

[0004] Patent documents

[0005] Patent Document 1: International Publication No. 2017 / 141443 Summary of the Invention

[0006] The technical problem that the invention aims to solve

[0007] In the ventilation device, air flows through a passage between the supply-side drain pan and the exhaust-side drain pan. To suppress the amount of air flowing through the passage, the pressure difference between the supply and exhaust passages needs to be adjusted, a wall is installed within the passage to increase pressure loss, or an adsorption unit is installed within the passage.

[0008] The purpose of this disclosure is to simply suppress the amount of air flowing through the passage between the first water receiving part and the second water receiving part in a water receiving tray disposed at the lower part of the heat exchange element, wherein the first water receiving part is disposed on one side of the heat exchange element and the second water receiving part is disposed on the other side of the heat exchange element in a direction perpendicular to the length direction and the vertical direction relative to the heat exchange element.

[0009] Technical solutions adopted to solve technical problems

[0010] (1) The ventilation device of this disclosure includes: a housing having an exhaust passage and an air supply passage; an exhaust fan disposed in the exhaust passage and generating an exhaust flow in the exhaust passage; an air supply fan disposed in the air supply passage and generating an air supply flow in the air supply passage; a heat exchange element that enables heat exchange between air flowing in the exhaust passage and air flowing in the air supply passage; a guide rail disposed below the heat exchange element and guiding the heat exchange element as it enters and exits the housing along its length; and a water collection tray disposed below the heat exchange element and having a position relative to the exhaust passage. The heat exchange element comprises a first water inlet located on one side of the heat exchange element in a direction perpendicular to both its length and vertical direction; a second water inlet located on the other side of the heat exchange element; a retaining portion located between the first and second water inlets and retaining the guide rail; and a passage formed in the retaining portion and communicating between the first and second water inlets; and a sealing member located in the passage, which obstructs the flow of air between the first and second water inlets via the passage. A water channel is formed between the bottom or side surface of the passage and the sealing member, and water is supplied to flow between the first and second water inlets via the water channel.

[0011] In the above structure, the flow of air through the passage between the water inlets can be suppressed by the seal disposed in the passage. Thus, the amount of air flowing through the passage can be easily suppressed. Furthermore, by adjusting the structure or material of the seal to form a water channel between the bottom or side of the passage and the seal, water can flow between the first and second water inlets while suppressing the flow of air in the passage.

[0012] (2) In the ventilation device of the manner described in (1) of this disclosure, it is preferred that the bottom surface of the first water receiving part and the bottom surface of the second water receiving part are substantially horizontal, two or more passages are provided in the length direction of the heat exchange element, the sealing element is provided in each passage, and a water passage for water to flow between the first water receiving part and the second water receiving part is formed between the bottom or side surface of each passage and the sealing element.

[0013] According to this structure, condensed water can be accumulated in both the first and second water receiving trays. In this structure, by providing multiple passages, the flow of condensed water between the first and second water receiving sections becomes convenient. Therefore, in the ventilation device of this disclosure, condensed water can be spread throughout both the first and second water receiving sections in the water receiving tray. In this case, the condensed water on the water receiving tray evaporates easily, and the height (depth) of the water receiving tray can be suppressed, thereby suppressing the dimension in the height direction of the ventilation device.

[0014] (3) In the ventilation device of the manner described in (1) or (2) of this disclosure, it is preferred that the water receiving tray extends in its length direction and in a direction orthogonal to the length direction and the vertical direction to a position outside the ends of one side and the other side of the heat exchange element.

[0015] This structure increases the water-receiving area of ​​the drip tray, thereby reducing its height (depth) and consequently reducing the vertical dimension of the ventilation device. In this configuration, the drip tray can leak-proofly collect condensation dripping from the heat exchange element.

[0016] (4) In any of the ventilation devices of the above (1) to (3) of this disclosure, it is preferred that the water receiving tray extends to a position outside the ends of one side and the other side in the length direction of the guide rail.

[0017] According to this structure, the condensation dripping from the end of the guide rail can be received leaklessly using a drip tray.

[0018] (5) In any of the ventilation devices of the above (1) to (4) of this disclosure, it is preferred that the passage is provided at the end of the holding part in the length direction of the heat exchange element and the end of the guide rail is located above the passage.

[0019] According to this structure, condensation dripping from the end of the guide rail can be received through a passage. In the ventilation device of the above structure, the condensation received through the passage can flow to both sides of the first and second water receiving parts, thereby suppressing the deviation of the condensation accumulated in the first and second water receiving parts.

[0020] (6) In any of the ventilation devices of the above (1) to (5) of this disclosure, it is preferred that the water receiving tray is also arranged in a symmetrical manner above the heat exchange element.

[0021] Based on this structure, the ventilation device can be used by flipping it up and down. Attached Figure Description

[0022] Figure 1This is a schematic cross-sectional view of the ventilation device according to an embodiment of the present disclosure, viewed from above.

[0023] Figure 2 yes Figure 1 A schematic cross-sectional view of the ventilation device at line AA.

[0024] Figure 3 yes Figure 1 A schematic cross-sectional view of the ventilation device at the BB line.

[0025] Figure 4 This is a schematic three-dimensional diagram of a heat exchange element.

[0026] Figure 5 This is a rough schematic diagram of the water receiving tray viewed from above.

[0027] Figure 6 This is an enlarged schematic diagram showing one end of the water receiving tray along its length.

[0028] Figure 7 yes Figure 6 A schematic cross-sectional view of the water receiving tray at the CC line.

[0029] Figure 8 It is a partially enlarged sectional view showing the arrangement of heat exchange elements and water receiving trays in the ventilation device.

[0030] Figure 9 This is a schematic cross-sectional view illustrating the arrangement of the guide rail and heat exchange element relative to the holding part of the water receiving tray.

[0031] Figure 10 This is a cross-sectional explanatory diagram showing the configuration of the seal and the formation of the water passage in the first embodiment.

[0032] Figure 11 This is a cross-sectional explanatory diagram showing the configuration of the seal and the formation of the water passage in the second embodiment. Detailed Implementation

[0033] The embodiments of this disclosure will now be described in detail with reference to the accompanying drawings.

[0034] Figure 1 This is a schematic cross-sectional view of the ventilation device according to an embodiment of the present disclosure, viewed from above. Figure 2 yes Figure 1 A schematic cross-sectional view of the ventilation device at line AA. Figure 3 yes Figure 1 A schematic cross-sectional view of the ventilation device at the BB line. Additionally, in the following description, the terms "upper," "lower," "front," "rear," "left," and "right" refer to [reference needed]. Figures 1-3 The arrows shown alongside these terms. Specifically, with... Figure 1 The first direction indicated by the middle arrow X is the left-right direction, with... Figures 1-3 The second direction indicated by the middle arrow Y is the forward and backward direction, and it is based on... Figure 2 and Figure 3 The third direction Z indicated by the middle arrow Z is the up-down direction. However, this is only one example; for instance, the first direction X can also be replaced with the front-back direction, and the second direction Y can be replaced with the left-right direction.

[0035] (Overall structure of the ventilation system)

[0036] Figures 1-3 The ventilation device 10 shown ventilates the room by exchanging outdoor air with indoor air. The ventilation device 10 is installed indoors. The ventilation device 10 is connected to the indoor environment via pipes D1 and D4, and to the outdoor environment via pipes D2 and D3.

[0037] like Figures 1-3 As shown, the ventilation device 10 has a housing 11, which has a generally rectangular box shape. Inside the housing 11 are a heat exchange element 12, an exhaust fan 13, an air supply fan 14, and a water collection tray 30. The housing 11 is provided with a return air inlet 21, an exhaust outlet 22, an external gas inlet 23, and an air supply outlet 24.

[0038] (Structure of the air supply and exhaust passages)

[0039] like Figures 1-3 As shown, the return air inlet 21 is used to introduce air (return air) RA from inside the house into the housing 11. The exhaust outlet 22 is used to discharge the return air RA introduced into the housing 11 as exhaust EA to the outside. The external gas inlet 23 is used to introduce air (external gas) OA from outside the house into the housing 11. The supply gas outlet 24 is used to supply the external gas OA introduced into the housing 11 as supply gas SA to the house.

[0040] like Figure 1 and Figure 2 As shown, the return air inlet 21 is connected to the interior via duct D1. The exhaust outlet 22 is connected to the exterior via duct D2. In the following description, the air passage connecting the interior and exterior via the aforementioned ducts D1 and D2 and through the outer casing 11 is also referred to as the exhaust passage (exhaust passage 16 described later).

[0041] like Figure 1 and Figure 3 As shown, the external gas inlet 23 is connected to the outside via pipe D3. The gas outlet 24 is connected to the inside via pipe D4. In the following description, the air passage connecting the inside and outside of the house via the aforementioned pipes D3 and D4 and through the outer casing 11 is also referred to as the gas supply passage (gas supply passage 17 described later).

[0042] like Figures 1-3 As shown, inside the outer casing 11, return air RA introduced from the return air inlet 21 passes through the heat exchange element 12 and is exhausted to the outside as exhaust air EA from the exhaust outlet 22. Hereinafter, this air flow will also be referred to as "first air flow F1". External air OA introduced from the external gas inlet 23 passes through the heat exchange element 12 and is supplied to the room as supply air SA from the supply outlet 24. Hereinafter, this air flow will also be referred to as "second air flow F2".

[0043] (Structure of heat exchange element 12)

[0044] Figure 4 This is a schematic perspective view of the heat exchange element. The ventilation device 10 of this embodiment has... Figure 4 The heat exchange element 12 is shown. The heat exchange element 12 is an orthogonal total heat exchanger configured such that the first airflow F1 and the second airflow F2 are almost orthogonal. The heat exchange element 12 has a partition plate 12a and a partition wall plate 12b. The partition plate 12a and the partition wall plate 12b are alternately stacked using a suitable adhesive. The heat exchange element 12 is generally formed in a quadrangular prism shape. Furthermore, in the following description, the stacking direction of the partition plate 12a and the partition wall plate 12b will also be referred to as the longitudinal direction of the heat exchange element 12.

[0045] The partition plate 12a has heat transfer and moisture permeability and is formed in a flat plate shape. The partition wall plate 12b is formed in a corrugated plate shape with a continuous, approximately triangular cross-section. The partition wall plate 12b forms an air passage between two adjacent partition plates 12a. The partition wall plate 12b is in the direction of stacking of the partition plates 12a and the partition wall plate 12b ( Figure 4 The elements are stacked along the length direction shown, with each element changing its angle by 90 degrees. Thus, the exhaust-side passage 12c for the first airflow F1 and the supply-side passage 12d for the second airflow F2 are formed orthogonally to each other on both sides, separated by a partition plate 12a. The air flowing through the exhaust-side passage 12c and the air flowing through the supply-side passage 12d exchange sensible and latent heat (total heat exchange) via the heat-conducting and moisture-permeable partition plate 12a. The heat exchange elements 12 are arranged in a configuration parallel to the left-right direction along the length direction of the housing 11 (see reference 12a). Figures 1-3 The interior of the heat exchange element 12. That is, the first direction X and the left and right directions refer to the length direction of the heat exchange element 12.

[0046] like Figures 1-3 As shown, the interior of the outer casing 11 is divided into two areas, an inner side and an outer side, by the heat exchange element 12. (As shown...) Figure 1 and Figure 2As shown, within the housing 11, an upstream exhaust passage 16a is formed upstream of the heat exchange element 12 and upstream of the first airflow F1, and a downstream exhaust passage 16b is formed downstream of the heat exchange element 12 and upstream of the first airflow F1. The upstream exhaust passage 16a and the downstream exhaust passage 16b together form an exhaust passage 16 that connects the interior and exterior of the house via the heat exchange element 12.

[0047] like Figure 1 and Figure 3 As shown, within the housing 11, an upstream air supply passage 17a is formed upstream of the second airflow F2, closer to the heat exchange element 12, and a downstream air supply passage 17b is formed downstream of the heat exchange element 12, closer to the second airflow F2. The upstream air supply passage 17a and the downstream air supply passage 17b together form an air supply passage 17 that connects the indoor and outdoor areas via the heat exchange element 12. Alternatively, the ventilation device 10 of this disclosure may also have... Figures 1-3 In addition to the exhaust passage 16 and the gas supply passage 17 shown, there is also a bypass passage that connects the indoor and outdoor areas without passing through the heat exchange element 12.

[0048] like Figure 2 and Figure 3 As shown, a partition wall 18 is provided between the upstream exhaust passage 16a and the downstream air supply passage 17b. A partition wall 19 is provided between the downstream exhaust passage 16b and the upstream air supply passage 17a.

[0049] like Figure 1 and Figure 2 As shown, in the downstream exhaust passage 16b, an exhaust fan 13 is arranged near the exhaust outlet 22. The operation of the exhaust fan 13 generates a first airflow F1, so that the return air RA from the house passes through the exhaust passage 16 and is discharged to the outside as exhaust EA.

[0050] like Figure 1 as well as Figure 3 As shown, in the downstream gas supply passage 17b, a gas supply fan 14 is arranged near the gas supply outlet 24. The operation of the gas supply fan 14 generates a second airflow F2, thereby supplying the outside gas OA through the gas supply passage 17b as gas supply SA into the house.

[0051] (Water tray)

[0052] like Figures 1-3 As shown, the water receiving tray 30 is a disc-shaped component that receives condensation water generated in the heat exchange element 12 and is used when positioned below the heat exchange element 12. The water receiving tray 30 includes a first water receiving portion 31, a second water receiving portion 32, and a holding portion 33.

[0053] In the ventilation device of Patent Document 1, it is configured to have a drain pan that receives condensate generated in the heat exchange element and discharges it to the outside of the device, and a drain pipe connected to the drain pan. The condensate received in the drain pan flows to the drain pipe through a natural slope and is discharged to the outside of the casing. The water receiving pan 30 of the ventilation device 10 of this disclosure is not connected to a drain pipe for draining the received water, and the water is treated by evaporation. The water receiving pan 30 of the ventilation device 10 of this disclosure is based on the premise of treating the condensate generated inside the casing 11, which is different from the drain pan described above.

[0054] like Figure 2 and Figure 3 As shown, the ventilation device 10 of this embodiment includes a water receiving tray 30 (hereinafter also referred to as the first water receiving tray 30A) disposed below the heat exchange element 12 and a water receiving tray 30 (hereinafter also referred to as the second water receiving tray 30B) disposed above the heat exchange element 12. In the ventilation device 10 of this disclosure, the one of the first water receiving tray 30A and the second water receiving tray 30B located below the heat exchange element 12 is used as the water receiving tray 30 and receives the condensate generated in the heat exchange element 12. In the following description, when simply referred to as "water receiving tray 30", the common structure of the first water receiving tray 30A and the second water receiving tray 30B will be described. Thus, the ventilation device 10 can be installed vertically by including water receiving trays 30 below and above the heat exchange element 12 respectively. Alternatively, the second water receiving tray disposed above the heat exchange element may be omitted in the ventilation device of this disclosure.

[0055] like Figures 1-3 As shown, the first water receiving tray 30A is disposed below the heat exchange element 12, and in a direction perpendicular to the length and vertical direction of the heat exchange element 12, it has a first water receiving portion 31 disposed on one side of the heat exchange element 12, a second water receiving portion 32 disposed on the other side of the heat exchange element 12, and a holding portion 33 disposed between the first water receiving portion 31 and the second water receiving portion 32. Figure 2 and Figure 3 As shown, the second water receiving tray 30B is disposed above the heat exchange element 12. In the direction perpendicular to the length direction and the vertical direction relative to the heat exchange element 12, it has a first water receiving portion 31 disposed on one side of the heat exchange element 12, a second water receiving portion 32 disposed on the other side of the heat exchange element 12, and a holding portion 33 disposed between the first water receiving portion 31 and the second water receiving portion 32.

[0056] The first water inlet 31 is disposed on one side (front side) of the heat exchange element 12 in a direction perpendicular to both its length (left-right direction) and its vertical direction. The second water inlet 32 ​​is disposed on the other side (rear side) of the heat exchange element 12 in a direction perpendicular to both its length (left-right direction) and its vertical direction. The retaining part 33 is disposed between the first water inlet 31 and the second water inlet 32 ​​in a direction perpendicular to both its length (left-right direction) and its vertical direction. The retaining part 33 refers to the guide rail 40 described later (see reference). Figure 9 The holding part 33 is the part that holds the heat exchange element 12 via the guide rail 40.

[0057] like Figures 1-3 As shown, the water receiving tray 30 extends to a position outside the ends of one and the other sides of the heat exchange element 12 in a direction orthogonal to the length (left-right direction) and the vertical direction (front-back direction) of the heat exchange element 12. In the ventilation device 10, by increasing the water receiving area (the area of ​​the portion receiving water when viewed from above) of the water receiving tray 30 in this way, the height (depth) of the water receiving tray 30 can be suppressed, thereby suppressing the dimension in the height direction of the ventilation device 10. The water receiving tray 30 with the above structure can receive condensation dripping from the heat exchange element 12 without leakage. In addition, the second direction Y and the front-back direction refer to directions orthogonal to the length and vertical directions of the heat exchange element 12.

[0058] Furthermore, in the case where the ventilation device 10 of this disclosure includes, in addition to the exhaust passage 16 and the air supply passage 17, a bypass passage connecting the indoor and outdoor areas without passing through the heat exchange element 12, is provided on the exhaust side outside the exhaust passage 16 in the left-right direction, and on the air supply side outside the air supply passage 17. In this case, it is preferable to make the lower part of the exhaust side bypass passage recessed towards the outer side of the exhaust passage 16 in the left-right direction, or to make the lower part of the air supply side bypass passage recessed towards the outer side of the air supply passage 17 in the left-right direction, thereby expanding the lower part of the exhaust passage 16 or the air supply passage 17 in the left-right direction, and expanding the water collection tray 30 in the left-right direction. In this case, the water collection area of ​​the water collection tray 30 can be further increased.

[0059] (Detailed structure of the drip tray)

[0060] Figure 5 This is a rough schematic diagram of the water receiving tray viewed from above. Figure 6 This is an enlarged schematic diagram showing one end of the water receiving tray along its length. Figure 7 yes Figure 6A schematic cross-sectional view of the water receiving tray at the CC line is provided. The structure of the water receiving tray 30 is further described in detail here. Figure 5 As shown, the water receiving tray 30 has a generally rectangular shape when viewed vertically. The water receiving tray 30 has an upright portion 34 at its outer periphery. The water receiving tray 30 is able to accumulate water within the area enclosed by the upright portion 34. The area enclosed by the upright portion 34 of the water receiving tray 30 is divided into two areas in the front-rear direction by a holding portion 33. The front side of these two areas is the first water receiving portion 31, and the rear side is the second water receiving portion 32. The water receiving tray 30 is able to accumulate water in the first water receiving portion 31 and the second water receiving portion 32. The first water receiving portion 31 has a bottom surface 31a, and the second water receiving portion 32 has a bottom surface 32a.

[0061] The ventilation device 10 is used in a manner in which the bottom surface 31a of the first water receiving portion 31 and the bottom surface 32a of the second water receiving portion 32 are substantially horizontal. Therefore, in the ventilation device 10, the water accumulated in the first water receiving portion 31 and the second water receiving portion 32 diffuses to the entire range of each bottom surface 31a and 32a, without being biased towards either bottom surface 31a or 32a. In addition, the term "substantially horizontal" here means that it may not be completely horizontal. As long as the water accumulated in each water receiving portion 31 and 32 diffuses to the entire range of each bottom surface 31a and 32a, the water receiving tray 30 in the ventilation device 10 of this embodiment can also be configured such that each bottom surface 31a and 32a is slightly inclined relative to the horizontal direction.

[0062] like Figures 5-7 As shown, the water receiving tray 30 has a passage 35. The passage 35 connects the first water receiving section 31 and the second water receiving section 32. In the water receiving tray 30, the passage 35 allows water accumulated in the first water receiving section 31 to flow between water accumulated in the second water receiving section 32. Figure 6 The flow of water shown is Fw). Figure 7 As shown, the passage 35 is a groove formed by a bottom surface 35a and a pair of opposing side surfaces 35b and 35c in the left-right direction, surrounding it in three directions. In the ventilation device 10 of this disclosure, the bottom surface 35a of the passage 35 is formed at the same position (height) in the vertical direction as each bottom surface 31a and 32a. Furthermore, the vertical position of the bottom surface 35a is preferably the same as or lower than the vertical position of each bottom surface 31a and 32a.

[0063] like Figure 5As shown, in the ventilation device 10 of this disclosure, the water receiving tray 30 includes a total of two (multiple) passages 35 at one end and the other end of the holding portion 33 in the longitudinal direction (left-right direction) of the heat exchange element 12. In the ventilation device 10 of this disclosure, by providing multiple passages 35 in the water receiving tray 30, the flow of condensed water between the first water receiving portion 31 and the second water receiving portion 32 becomes easier. In the ventilation device 10 of this disclosure, the bottom surfaces 31a and 32a of the water receiving tray 30 are almost horizontal. In the ventilation device 10 with the above structure, condensed water can be accumulated uniformly in the water receiving tray 30 without biasing towards a portion of the first water receiving portion 31 and the second water receiving portion 32. Therefore, in the ventilation device 10, the condensed water received in the water receiving tray 30 can be extended to the entire first water receiving portion 31 and the second water receiving portion 32. In this situation, the condensate on the water tray 30 becomes easier to evaporate, and even without increasing the height (depth) of the water tray 30, the condensate is less likely to overflow from the water tray 30. Therefore, in the ventilation device 10 of this disclosure, the height (depth) of the water tray 30 can be suppressed, thereby suppressing the dimension in the height direction of the ventilation device 10.

[0064] With the first water receiving tray 30A in place, passage 35 also allows air to pass through. Figures 1-3 The upstream exhaust passage 16a for external gas OA flow and the upstream supply passage 17a for return air RA flow are shown. Furthermore, in the case of the second water tray 30B, passage 35 also allows air to flow between the downstream exhaust passage 16b for supply air EA flow and the downstream supply passage 17b for supply air SA flow. In the ventilation device 10, it is preferable to suppress contamination of external gas OA and return air RA or exhaust air EA and supply air SA. Therefore, in the ventilation device 10, the seal 50 (see below) is used. Figure 10 and Figure 11 ) set in Figures 5-7 The passage 35 is shown. In the ventilation device 10, the aforementioned seal 50 obstructs the flow of air in the passage 35.

[0065] like Figures 5-7 As shown, the retaining portion 33 is a portion of the water receiving tray 30 that is raised upwards and downwards from the bottom surface 31a, 32a, by means of a portion surrounded by the upright portion 34. The retaining portion 33 is provided between the first water receiving portion 31 and the second water receiving portion 32 along the longitudinal direction (left-right direction) of the heat exchange element 12. One end and the other end of the retaining portion 33 in the left-right direction are separated from the upright portion 34. A passage 35 is formed between one end and the other end of the retaining portion 33 in the left-right direction and the upright portion 34.

[0066] The retaining part 33 has a raised part 33a, a guide rail groove 33b, and filter grooves 33c and 33d. The guide rail groove 33b is for embedding the guide rail 40 described later (see reference). Figure 9 The grooves 33c and 33d are formed along the length (left-right direction) of the heat exchange element 12 at the center of the raised portion 33a in the front-back direction. The filter grooves 33c and 33d are filters used to maintain and filter the air flowing into the heat exchange element 12 (see reference). Figure 8 The filter 37 shown has a groove. In addition, in the ventilation device 10 of this embodiment, filter grooves 33c and 33d are provided in a portion of the holding portion 33, but filter grooves 33c and 33d may not be part of the holding portion 33. The ventilation device 10 of this embodiment may also omit filter grooves 33c and 33d and filter 37 (see reference 37). Figure 8 ).

[0067] In addition, Figure 5 In the water receiving tray 30 shown, a total of two (or more) passages 35 are provided at one end and the other end of the holding portion 33 along the longitudinal direction (left-right direction) of the heat exchange element 12. However, the number of passages in the ventilation device of this disclosure is not limited to this; it may be one passage or three or more passages. Figure 5 In the water receiving tray 30 shown, a passage 35 is provided at the end of the holding part 33 in the longitudinal direction (left-right direction) of the heat exchange element 12 (between one end and the other end and the standing part). However, the ventilation device of this disclosure may also provide the passage at the middle position of the holding part in the longitudinal direction (left-right direction) of the heat exchange element.

[0068] (Setting status of heat exchange components, guide rails, and water receiving tray)

[0069] Figure 8 It is a partially enlarged sectional view showing the arrangement of heat exchange elements and water receiving trays in the ventilation device. Figure 9 This is a schematic cross-sectional view illustrating the arrangement of the guide rails and heat exchange elements relative to the retaining portion of the water receiving tray. (See diagram below.) Figure 8 As shown, the heat exchange element 12 has a square shape when viewed from the longitudinal direction, and has rectangular protrusions 12e that protrude outward from each vertex of the square (a total of four parts) in the diagonal direction. The protrusions 12e are provided along the entire length of the heat exchange element 12.

[0070] In the heat exchange element 12, the lower protrusion 12e of the four protrusions 12e is held by the holding part 33 of the first water receiving tray 30A, and the upper protrusion 12e is held by the holding part 33 of the second water receiving tray 30B.

[0071] like Figure 8 As shown, the ventilation device 10 includes retaining portions 15 for holding the heat exchange element 12 on both the front and rear sides of the space within the housing 11 where the heat exchange element 12 is disposed. In the following description, the retaining portion 15 located at the front will be referred to as the front retaining portion 15A, and the retaining portion 15 located at the rear will be referred to as the rear retaining portion 15B. In the heat exchange element 12, the front protrusion 12e of the four protrusions 12e is held by the front retaining portion 15A, and the rear protrusion 12e is held by the rear retaining portion 15B.

[0072] like Figure 9 As shown, a guide rail 40 is provided between the guide rail groove 33b of the holding part 33 and the protrusion 12e of the heat exchange element 12. The guide rail 40 is a steel component with a generally U-shaped cross-section orthogonal to the length direction. The guide rail 40 has a groove 41 into which the protrusion 12e of the heat exchange element 12 can be inserted. The guide rail 40 is inserted into the guide rail groove 33b and is provided along the length direction of the heat exchange element 12. The length of the guide rail 40 in the length direction is longer than the length of the holding part 33 in the length direction, and it covers a portion of the upper part of the passage 35 in the left-right direction (see reference). Figure 10 One end and the other end of the guide rail 40 are located above the passage 35 in the left and right directions. Furthermore, when the passage 35 is positioned at the center of the holding portion 33 along the length of the heat exchange element 12, the guide rail 40 covers the entire upper part of the passage 35. The guide rail 40 guides the heat exchange element 12 along its length as it moves in and out of the housing 11. The guide rail 40 prevents direct contact between the heat exchange element 12 and the holding portion 33, thus preventing damage and wear to the holding portion 33. Additionally, for ease of explanation, in... Figures 1-4 The guide rail 40 is omitted from the illustration of the ventilation device 10 shown.

[0073] (Regarding seals)

[0074] Figure 10 This is a cross-sectional explanatory diagram showing the configuration of the seal and the formation of the water passage in the first embodiment. Figure 11 This is a cross-sectional view illustrating the configuration of the seals and the formation of the water channels in the second embodiment. Figure 10 As shown, the ventilation device 10 has a seal 50 disposed in the passage 35 of the water receiving tray 30. The seal 50 is disposed in the space surrounded by the bottom surface 35a and the sides 35b, 35c of the passage 35 and the guide rail 40.

[0075] exist Figure 10 In the case shown, a water channel 36 is formed between the bottom surface 35a of the passage 35 and the seal 50. The water channel 36 is part of the passage 35. Additionally, in Figure 10In the illustrated configuration, no gaps are provided between the sides 35b, 35c and the seal 50. The seal 50 seals the portion of the passage 35 except for the water channel 36, thereby impeding the flow of air in the passage 35 and allowing water to flow between the first water inlet 31 and the second water inlet 32 ​​via the water channel 36. The seal 50 can be fixed to the guide rail 40, for example, by adhesive bonding, or it can be pressed into the passage 35 without being fixed to other components.

[0076] In the ventilation device 10 disclosed herein, the seal 50 may also be... Figure 11 The configuration shown is applied to channel 35. Figure 11 In the arrangement shown, water channels 36 are formed between the side 35b of the passage 35 and the seal 50, and between the side 35c of the passage 35 and the seal 50, respectively. Additionally, Figure 11 In the configuration shown, no gap is provided between the bottom surface 35a and the seal 50. Additionally, Figure 10 and Figure 11 The seal 50 shown is roughly rectangular when viewed from the front and rear directions, but the shape of the seal 50 disposed in the passage 35 is not limited to this. The shapes of the passage 35 and the water passage 36 can also be changed by changing the shape of the seal 50. By adjusting the shape of the seal 50 relative to the passage 35, the balance between the flow of air in the passage 35 and the flow of water in the water passage 36 can be regulated.

[0077] Figure 10 and Figure 11 The seal 50 shown is made of an elastic material. The seal 50 is constructed by molding the material into a shape capable of sealing a portion of the passage 35. For example, polyurethane foam, polyethylene foam, EPDM foam, etc., can be used as materials constituting the seal 50. The seal 50 can also be constructed using a sponge-like material with continuous air bubbles. In this case, the continuous air bubbles formed inside the seal 50 allow water to flow between the first water inlet 31 and the second water inlet 32, while the continuous air bubbles containing water impede airflow between the first water inlet 31 and the second water inlet 32. Alternatively, the seal 50 can also be constructed using a sponge-like material with individual air bubbles or a material without air bubbles.

[0078] In the ventilation device 10 of this disclosure, the sealing member 50 may also be configured without gaps between itself and the bottom surface 35a and the sides 35b, 35c of the passage 35. In this case, the sealing member 50 is preferably made of a material having continuous air bubbles, and the continuous air bubbles within the sealing member 50 serve as the water passage 36. In the ventilation device 10 of this disclosure, the sealing member 50 may also be configured with gaps between itself and the bottom surface 35a and the sides 35b, 35c of the passage 35. In this case, the sealing member 50 is preferably fixed to the guide rail 40.

[0079] In the ventilation device 10 with the above-described structure, the sealing element 50 disposed in the passage 35 suppresses the flow of air between the water receiving parts 31 and 32 through the passage 35. Thus, by focusing on the structure and material of the sealing element 50, the amount of air flowing through the passage 35 is suppressed, and a water passage 36 is formed between the bottom surface 35a or the sides 35b and 35c of the passage 35 and the sealing element 50. This allows water to flow between the first water receiving part 31 and the second water receiving part 32 while suppressing the flow of air in the passage 35. Furthermore, to prevent the flow of air between the exhaust passage 16 and the air supply passage 17 in the portion of the heat exchange element 12 other than the passage 35 in the longitudinal direction, the housing 11 is sealed between the two ends in the longitudinal direction of the heat exchange element 12.

[0080] (Regarding the configuration of the water receiving tray relative to the end of the guide rail)

[0081] like Figure 10 and Figure 11 As shown, in the ventilation device 10 of this disclosure, the water receiving tray 30 extends along the length (left-right direction) of the heat exchange element 12 to a position further outward than the ends of one and the other sides of the guide rail 40. In the ventilation device 10 with the above structure, the water receiving tray 30 can be used to receive condensation dripping from the end of the guide rail 40 without leakage.

[0082] (Regarding the configuration of the passage relative to the end of the guide rail)

[0083] like Figure 10 and Figure 11As shown, in the ventilation device 10 of this disclosure, a passage 35 is provided at the end of the holding portion 33 in the longitudinal direction (left-right direction) of the heat exchange element 12, and the end of the guide rail 40 is located above the passage 35. In the ventilation device 10 with the above structure, the passage 35 can be used to receive condensation dripping from the end of the guide rail 40. In the ventilation device 10 of this disclosure, the first water receiving portion 31 and the second water receiving portion 32 are almost horizontal, so the condensation received by the passage 35 can flow approximately equally to both sides of the first water receiving portion 31 and the second water receiving portion 32. Therefore, in the ventilation device 10 of this disclosure, the deviation in the amount of condensation accumulated in the first water receiving portion 31 and the second water receiving portion 32 can be suppressed, thereby allowing the condensation to be received in a manner that diffuses to the entire first water receiving portion 31 and the second water receiving portion 32.

[0084] [Effects of the Implementation Method]

[0085] (1) The ventilation device 10 of the above embodiment includes: a housing 11 having an exhaust passage 16 and an air supply passage 17; an exhaust fan 13 disposed in the exhaust passage 16 and generating an exhaust flow in the exhaust passage 16; an air supply fan 14 disposed in the air supply passage 17 and generating an air supply flow in the air supply passage 17; a heat exchange element 12 that enables heat exchange between the air flowing in the exhaust passage 16 and the air flowing in the air supply passage 17; a guide rail 40 disposed below the heat exchange element 12 and guiding the heat exchange element 12 when it enters and exits the housing 11 along its length; and a water receiving tray 30 disposed below the heat exchange element 12. The device comprises a first water inlet 31 disposed on one side of the heat exchange element 12 in a direction perpendicular to the length and vertical direction of the heat exchange element 12, a second water inlet 32 ​​disposed on the other side of the heat exchange element 12, a retaining part 33 disposed between the first water inlet 31 and the second water inlet 32 ​​and holding the guide rail 40, and a passage 35 formed in the retaining part 33 and communicating the first water inlet 31 and the second water inlet 32; and a sealing member 50 disposed in the passage 35 to obstruct the flow of air between the first water inlet 31 and the second water inlet 32 ​​through the passage 35. A water passage 36 is formed between the bottom surface 35a or the side surface 35b, 35c of the passage 35 and the sealing member 50, and the water passage 36 supplies water to flow between the first water inlet 31 and the second water inlet 32.

[0086] According to the ventilation device 10 with the above structure, the sealing member 50 disposed in the passage 35 can suppress the flow of air through the passage 35 between the water receiving parts 31 and 32. Thus, the amount of air flowing in the passage 35 can be suppressed. Furthermore, by adjusting the structure or material of the sealing member 50 to form a water channel 36 between the bottom surface 35a or the sides 35b, 35c of the passage 35 and the sealing member 50, the flow of air in the passage 35 can be suppressed while water flows between the first water receiving part 31 and the second water receiving part 32. According to the ventilation device 10, the amount of air flowing in the passage 35 can be easily suppressed in the first water receiving tray 30A disposed at the lower part of the heat exchange element 12, wherein the passage 35 is located between the first water receiving part 31 disposed on one side of the heat exchange element 12 and the second water receiving part 32 disposed on the other side of the heat exchange element 12 in a second direction Y (front-back direction) perpendicular to the length and vertical direction of the heat exchange element 12.

[0087] (2) In the ventilation device 10 of the above embodiment, the bottom surface 31a of the first water receiving part 31 and the bottom surface 32a of the second water receiving part 32 are substantially horizontal. Two passages 35 are provided in the length direction of the heat exchange element 12, and a sealing element 50 is provided in each passage 35. A water passage 36 is formed between the bottom surface 35a or the side surface 35b, 35c of each passage 35 and the sealing element 50, and the water passage 36 supplies water to flow between the first water receiving part 31 and the second water receiving part 32.

[0088] According to the ventilation device 10 with the above-described structure, condensed water can be accumulated in the water receiving tray 30, covering both the first water receiving portion 31 and the second water receiving portion 32. In this structure, by providing multiple passages 35, the flow of condensed water between the first water receiving portion 31 and the second water receiving portion 32 becomes convenient. Therefore, in the ventilation device 10 of the above embodiment, condensed water can be spread throughout the first water receiving portion 31 and the second water receiving portion 32 in the water receiving tray 30. In this case, the condensed water on the water receiving tray 30 evaporates easily, and the height (depth) of the water receiving tray 30 can be suppressed, thereby suppressing the dimension in the height direction of the ventilation device 10.

[0089] (3) In the ventilation device 10 of the above embodiment, the water receiving tray 30 extends outward to one side and the other side of the end of the specific heat exchange element 12 in its length direction and in the front-back direction orthogonal to the length direction and the up-down direction.

[0090] The ventilation device 10 with the above-described structure has an enlarged water-receiving area of ​​the water-receiving tray 30, thereby suppressing the height (depth) of the water-receiving tray 30, and consequently suppressing the dimension in the height direction of the ventilation device 10. In this case, the water-receiving tray 30 can receive the condensate dripping from the heat exchange element 12 without leakage.

[0091] (4) In the ventilation device 10 of the above embodiment, the water receiving tray 30 extends to a position on the outer side of one side and the other side of the guide rail 40 in the length direction.

[0092] According to the above-described structure, the ventilation device 10 can use the water receiving tray 30 to receive the condensate dripping from the end of the guide rail 40 without leakage.

[0093] (5) In the ventilation device 10 of the above embodiment, the passage 35 is provided at the end of the holding part 33 in the length direction of the heat exchange element 12, and the end of the guide rail 40 is located above the passage 35.

[0094] According to the ventilation device 10 with the above structure, the passage 35 can be used to receive condensed water dripping from the end of the guide rail 40. In the ventilation device 10 with the above structure, the condensed water received by the passage 35 can be made to flow to both sides of the first water receiving part 31 and the second water receiving part 32, thereby suppressing the deviation of the condensed water accumulated in the first water receiving part 31 and the second water receiving part 32.

[0095] (6) In the ventilation device 10 of the above embodiment, the water receiving tray 30 (first water receiving tray 30A) is also arranged above the heat exchange element 12 as a second water receiving tray 30B in a symmetrical form.

[0096] The ventilation device 10 with the above structure can be used by flipping it upside down when there are restrictions on the setting location.

[0097] The embodiments have been described above, but it should be understood that various changes in form and detail can be made without departing from the spirit and scope of the claims.

[0098] Symbol Explanation

[0099] 10. Ventilation device;

[0100] 11. Outer shell;

[0101] 12 heat exchange elements;

[0102] 13 exhaust fans;

[0103] 14 air supply fans;

[0104] 16. Exhaust passages;

[0105] 17. Gas supply channels;

[0106] 30 water tray;

[0107] 30A First Water Receiving Tray;

[0108] 30B Second Water Receiving Tray;

[0109] 31 First water receiving section;

[0110] 31a bottom surface;

[0111] 32. Second water inlet;

[0112] 32a bottom surface;

[0113] 33. Maintaining section;

[0114] 35 channels;

[0115] 35a bottom surface;

[0116] 35b side view;

[0117] 35c side view;

[0118] 36 waterways;

[0119] 40 guide rails;

[0120] 50. Sealing components.

Claims

1. A ventilation device (10), characterized in that, include: The housing (11) has an exhaust passage (16) and an air supply passage (17); An exhaust fan (13) is disposed in the exhaust passage (16) and generates an exhaust flow in the exhaust passage (16); An air supply fan (14) is disposed in the air supply passage (17) and generates an air supply flow in the air supply passage (17); A heat exchange element (12) enables heat exchange between air flowing in the exhaust passage (16) and air flowing in the supply passage (17). A guide rail (40) is disposed below the heat exchange element (12) to guide the heat exchange element (12) as it moves in and out of the housing (11) along its length. A water receiving tray (30) is disposed below the heat exchange element (12) and has a first water receiving portion (31) disposed on one side of the heat exchange element (12) in a direction perpendicular to the length and vertical direction of the heat exchange element (12), a second water receiving portion (32) disposed on the other side of the heat exchange element (12), a holding portion (33) disposed between the first water receiving portion (31) and the second water receiving portion (32) and holding the guide rail (40), and a passage (35) formed in the holding portion (33) and communicating between the first water receiving portion (31) and the second water receiving portion (32); and A seal (50) disposed in the passage (35) obstructs the flow of air between the first water inlet (31) and the second water inlet (32) via the passage (35). The seal (50) contacts the passage (35). A water passage (36) is formed between the bottom surface (35a) or side surface (35b, 35c) of the passage (35) and the seal (50), and the water passage supplies water to flow between the first water receiving part (31) and the second water receiving part (32).

2. The ventilation device (10) according to claim 1, characterized in that, The bottom surface (31a) of the first water receiving part (31) and the bottom surface (32a) of the second water receiving part (32) are approximately horizontal. Two or more passages (35) are provided along the length of the heat exchange element (12), and a sealing element (50) is provided in each passage (35). A water passage (36) is formed between the bottom surface (35a) or side surface (35b, 35c) of each passage (35) and the sealing element (50) to supply water to flow between the first water receiving part (31) and the second water receiving part (32).

3. The ventilation device (10) according to claim 1 or 2, characterized in that, The water receiving tray (30) extends along its length and in a direction orthogonal to the length and vertical directions to a position outside the ends of one and the other sides of the heat exchange element (12).

4. The ventilation device (10) according to claim 1 or 2, characterized in that, The water receiving tray (30) extends to a position on the outer side of one side and the other side of the guide rail (40) in the length direction.

5. The ventilation device (10) according to claim 1 or 2, characterized in that, The passage (35) is provided at the end of the holding part (33) along the length direction of the heat exchange element (12). The end of the guide rail (40) in the length direction is located above the passage (35).

6. The ventilation device (10) according to claim 1 or 2, characterized in that, The water receiving tray (30) is also arranged in a symmetrical manner above the heat exchange element (12).

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