Heat exchange ventilation system

Abstract

The present invention provides a heat exchange ventilation system that can suppress short-circuiting, where air blown out from the intake opening is drawn into the return opening. [Solution] The heat exchange ventilation device 100 comprises a housing 30 having an air supply opening 11 and a return air opening 12 on its bottom surface 30f, and a louver 38 provided to cover the air supply opening 11 and the return air opening 12. The housing 30 is provided with a first partition plate 31 that rises from between the air supply opening 11 and the return air opening 12. The louver 38 is provided with a second partition plate 32 that rises toward the housing. The first partition plate 31 is provided so as to overlap at least a part of the second partition plate 32.

Description

Technical Field

[0001] The present disclosure relates to a heat exchange type ventilation device.

Background Art

[0002] As one type of heat exchange type ventilation device, there is known a device installed in the ceiling space and having a ventilation port and an indoor air supply port of the ventilation device (for example, Patent Document 1). Such a device has an outside air intake port for introducing outside air, an exhaust port for discharging indoor air, and a plurality of indoor air supply ports for supplying outside air into the room.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the device described in Patent Document 1, since the indoor air supply port of the air blown out from inside the device toward the room and the return air port of the dirty air in the room are arranged on the same plane, the air blown out from the indoor air supply port is likely to be sucked into the return air port without flowing toward the living room, resulting in a short circuit.

[0005] The present disclosure has been made to solve the above problems, and an object thereof is to provide a heat exchange type ventilation device capable of suppressing a short circuit in which the air blown out from the air supply opening is sucked into the return air opening.

Means for Solving the Problems

[0006] To solve the above problems, a heat exchange ventilation system according to one embodiment of the present disclosure comprises a housing having an air supply opening and a return air opening on its bottom surface, and a louver provided to cover the air supply opening and the return air opening. The housing includes a first partition plate that rises from between the air supply opening and the return air opening. The louver includes a second partition plate that rises toward the housing. The first partition plate is provided so as to overlap at least a portion of the second partition plate.

[0007] Furthermore, any combination of the above components, as well as any conversion of the expressions of this disclosure between methods, apparatus, systems, recording media, computer programs, etc., are also valid forms of this disclosure. [Effects of the Invention]

[0008] According to this disclosure, it is possible to provide a heat exchange ventilation system that can suppress short-circuiting, in which air blown out from the supply air opening is drawn into the return air opening. [Brief explanation of the drawing]

[0009] [Figure 1] This is a perspective view showing a heat exchange ventilation system according to an embodiment of the present disclosure. [Figure 2] This is a side cross-sectional view showing the first and second partition plates connected to the housing and louvers in Figure 1. [Figure 3] Figure 1 schematically shows the supply and exhaust air passages of the heat exchange ventilation system. [Figure 4] This diagram schematically shows the airflow from the air intake opening when the enclosure and louvers are connected. [Figure 5] Figure 1 is a schematic side cross-sectional view showing the casing and louvers of the heat exchange ventilation system connected. [Modes for carrying out the invention]

[0010] Hereinafter, embodiments for implementing this disclosure will be described with reference to the attached drawings. The embodiments described below all represent preferred specific examples of this disclosure. Therefore, the numerical values, shapes, materials, components, arrangement and connection configurations of components, as well as the steps (processes) and the order of steps shown in the following embodiments are examples and are not intended to limit this disclosure. Accordingly, among the components in the following embodiments, components that are not described in the independent claims representing the highest-level concept of this disclosure will be described as arbitrary components. In addition, substantially identical components are denoted by the same reference numerals in each figure, and redundant explanations are omitted or simplified.

[0011] Furthermore, while terms including ordinal numbers such as "first" and "second" are used to describe various components, these terms are used solely to distinguish one component from others, and do not limit the components themselves.

[0012] [Examples] A heat exchange ventilation system 100 according to an embodiment of the present disclosure will be described with reference to Figures 1-5. Figure 1 is a perspective view of the heat exchange ventilation system 100 viewed from diagonally below. This figure shows the housing 30 separated downwards from the bottom surface 30f and the louvers 38. Figure 2 is a schematic side cross-sectional view showing the first partition plate 31 and the second partition plate 32 connected to the housing 30 and the louvers 38. Figure 3 is a schematic diagram showing the supply air passage 14 and the exhaust air passage 15.

[0013] The heat exchange ventilation system 100 of this embodiment is suitably installed, for example, in the space above the ceiling 18 of an indoor space 17 such as a living room in a house. As shown in Figure 3, the heat exchange ventilation system 100 has an air supply passage 14 through which the air supply flow 4 flows and an exhaust passage 15 through which the exhaust flow 3 flows. The heat exchange ventilation system 100 is a device that performs ventilation by simultaneously exhausting the air from the indoor space 17 and supplying outside air. The heat exchange ventilation system 100 uses a heat exchange element 13 to exchange heat between the exhaust flow 3, which is the airflow from the indoor space 17 taken in from the return air opening 12, and the air supply flow 4, which is outside air taken in from the outside air intake 9. The heat exchange ventilation system 100 supplies the air supply flow 4, which has exchanged heat with the exhaust flow 3, to the indoor space 17 from the air supply opening 11.

[0014] The heat exchange ventilation system 100 includes a second blower 25 that generates an exhaust flow 3 in an exhaust air passage 15, and a first blower 24 that generates a supply air flow 4 in a supply air passage 14. The first blower 24 and the second blower 25 can be configured to include a fan (not shown) and a motor (not shown) for rotating the fan.

[0015] As shown in Figure 1, the heat exchange ventilation device 100 comprises a housing 30 having an air supply opening 11 and an air return opening 12 on its bottom surface 30f, and a louver 38 provided to cover the air supply opening 11 and the air return opening 12. The housing 30 has a roughly box-like shape with a top surface 30a, sides 30b, 30c, 30d, 30e and a bottom surface 30f. In this example, the air supply opening 11 and the air return opening 12 are arranged on substantially the same plane, but these openings may be separated vertically.

[0016] In this example, the air intake opening 11 is a roughly rectangular opening that is shorter front-to-back than left-to-right and is located near the rear side surface 30c. In this example, the air return opening 12 is a roughly rectangular opening that is shorter front-to-back than left-to-right and is located near the front of the air intake opening 11. For example, the air return opening 12 has approximately the same width from left to right as the air intake opening 11 and a greater height than the air intake opening 11. Each of the air intake opening 11 and the air return opening 12 may or may not have a grille (not shown).

[0017] The louver 38 is a substantially rectangular plate-like member that extends substantially parallel to the bottom surface 30f and is provided at a predetermined distance below the bottom surface 30f. The louver 38 may have substantially the same shape as the bottom surface 30f in a bottom view, or may have a shape that partially or entirely protrudes from the bottom surface 30f, or a part may recede inward from the edge of the bottom surface 30f. The louver 38 may have ventilation holes, but does not have them in this example.

[0018] The side surfaces 30b, 30c, 30d, and 30e of the housing 30 are surfaces that extend vertically and are provided on the front, rear, left, and right surfaces. Hereinafter, for convenience, the opposing direction of the side surfaces 30b and 30c is referred to as the front-rear direction and is indicated by the arrow X. In the front-rear direction, the side surface 30b side where the outside air suction port 9 and the exhaust blowout port 10 are provided is referred to as "front" with respect to the side surface 30c, and the opposite direction is referred to as "rear". Also, the opposing direction of the side surfaces 30d and 30e is referred to as the left-right direction and is indicated by the arrow Y. Also, the vertical direction is indicated by the arrow Z. Such notation of directions does not limit the posture of the heat exchange type ventilation device 100.

[0019] The outside air suction port 9 and the exhaust blowout port 10 are provided on the side surface 30b. The outside air suction port 9 and the exhaust blowout port 10 are formed in a shape to which an exhaust or supply duct can be connected. The outside air suction port 9 is a suction port that sucks outside air, which is air outside the building, into the heat exchange type ventilation device 100 through a duct (not shown). The exhaust blowout port 10 is a discharge port that blows the inside air, which is the air in the indoor space 17, from the heat exchange type ventilation device 100 to the outside of the building through a duct (not shown).

[0020] The heat exchange element 13, as an example, has a box shape and is disposed at a position where the supply air passage 14 and the exhaust air passage 15 intersect. The heat exchange element 13 supplies the heat amount of the exhaust flow 3 to be exhausted to the supply flow 4 to be supplied. Or, the heat exchange element 13 supplies the heat amount of the supply flow 4 to be supplied to the heat amount of the exhaust flow 3 to be exhausted. Thus, the heat exchange element 13 has a heat recovery function.

[0021] Next, the characteristic configuration of the heat exchange type ventilation device 100 will be described. When the supply air opening 11 and the return air opening 12 are arranged close to each other, a phenomenon called short circuit occurs where the air SA blown out from the supply air opening 11 is sucked into the return air opening 12, and the heat exchange efficiency decreases. Therefore, in the heat exchange type ventilation device 100 of the embodiment, the housing 30 includes a first partition plate 31 that stands up between the supply air opening 11 and the return air opening 12, and the louver 38 includes a second partition plate 32 that stands up toward the housing 30. The first partition plate 31 is provided so as to overlap at least a part of the second partition plate 32. This makes it difficult for a short circuit to occur and suppresses a decrease in the heat exchange efficiency of the heat exchange type ventilation device 100.

[0022] As shown in FIG. 2, the first partition plate 31 is a plate-like portion that extends vertically from the bottom surface 30f. The first partition plate 31 has a substantially rectangular shape with a vertical width shorter than the horizontal width. The horizontal width of the first partition plate 31 is preferably set to be equal to or greater than the horizontal widths of the supply air opening 11 and the return air opening 12. The second partition plate 32 is a plate-like portion that extends vertically from the louver 38. The second partition plate 32 has a substantially rectangular shape with a vertical width shorter than the horizontal width. The horizontal width of the second partition plate 32 is preferably set to be equal to or greater than the horizontal widths of the supply air opening 11 and the return air opening 12. In this example, the horizontal width of the second partition plate 32 is substantially equal to the horizontal width of the louver 38.

[0023] The first partition plate 31 is provided so as to overlap at least a part of the second partition plate 32. For example, when viewed in the front-rear direction, the first partition plate 31 has a portion that overlaps the second partition plate 32.

[0024] FIG. 4 is a diagram schematically showing the flow of the air SA blown out from the supply air opening 11. FIG. 4(A) shows the case where the first partition plate 31 and the second partition plate 32 are not provided, FIG. 4(B) shows the case where the second partition plate 32 is arranged behind the first partition plate 31, and FIG. 4(C) shows the case where the second partition plate 32 is arranged in front of the first partition plate 31.

[0025] As shown in Figure 4(A), when the air SA blown out from the supply air opening 11 collides with the louvers 38, it is thought to diffuse along the surface of the louvers 38 and enter the return air opening 12. Therefore, in the heat exchange ventilation device 100 of this embodiment, as shown in Figure 4(B), the second partition plate 32 is provided closer to the supply air opening 11 than the first partition plate 31. In other words, the second partition plate 32 is positioned behind the first partition plate 31.

[0026] As shown in Figure 4(C), when the second partition plate 32 is positioned in front of the first partition plate 31, air SA can easily flow into the return air opening 12 through the gap between the tip of the first partition plate 31 and the louver 38. However, as shown in Figure 4(B), the inflow of air SA into the return air opening 12 can be suppressed. This makes short circuits less likely to occur and suppresses a decrease in the heat exchange efficiency of the heat exchange ventilation device 100.

[0027] It is conceivable that air may leak from between the first partition plate 31 and the second partition plate 32. Therefore, in the heat exchange ventilation device 100 of the embodiment, as shown in Figure 2, a packing 33 is provided on the contact surface between the first partition plate 31 and the second partition plate 32. The packing 33 is a substantially rectangular plate-shaped member whose vertical width is shorter than its horizontal width, and can be formed from a known packing material, such as a flexible rubber-based material.

[0028] The packing 33 may be in contact with one or both of the first partition plate 31 and the second partition plate 32, or it may not be in contact with either. The packing 33 may be in contact with one or both of the louvers 38 and the bottom surface 30f, or it may not be in contact with either. The vertical width of the packing 33 may be less than or equal to the vertical width of the first partition plate 31. Furthermore, by providing the packing 33, air leakage can be suppressed even when the second partition plate 32 is positioned in front of the first partition plate 31, as shown in Figure 4(C).

[0029] Figure 5 is a schematic side cross-sectional view showing the state in which the housing 30 and the louvers 38 are connected. As shown in this figure, the heat exchange ventilation device 100 forms a ventilation space 34a between the housing 30 and the louvers 38. The louvers 38 have a frame 38b for connection to the ceiling 18. The ventilation space 34a includes a supply air space 34b and a return air space 34c, which are partitioned by a first partition plate 31 and a second partition plate 32. The supply air space 34b is a space that faces and leads to the supply air opening 11, and the return air space 34c is a space that faces and leads to the return air opening 12.

[0030] If the air SA blown into the supply air space 34b remains stagnant within the supply air space 34b, it is likely to enter the return air space 34c and cause a short circuit. Therefore, in the heat exchange ventilation system 100 of this embodiment, as shown in Figure 5, the volume of the supply air space 34b is configured to be smaller than the volume of the return air space 34c. In this case, the stagnation of air SA in the supply air space 34b is suppressed, the air SA flows out quickly into the indoor space 17, making it less likely for a short circuit to occur and suppressing a decrease in the heat exchange efficiency of the heat exchange ventilation system 100.

[0031] From the viewpoint of reducing the stagnation of air SA blown into the supply air space 34b, it is desirable to allow the air SA to flow out of the supply air space 34b as quickly as possible. Therefore, in the heat exchange ventilation device 100 of the embodiment, as shown in Figure 5, the supply air space 34b is provided below the bottom surface 30f of the housing 30 and above the louvers 38, and the sides of the supply air space 34b are open except for the first partition plate 31 and the second partition plate 32. In this case, the stagnation of air SA in the supply air space 34b is suppressed, short circuits are less likely to occur, and the decrease in the heat exchange efficiency of the heat exchange ventilation device 100 can be suppressed.

[0032] From the viewpoint of reducing the intrusion of air SA blown into the supply air space 34b into the return air space 34c, it is desirable that the overlap between the first partition plate 31 and the second partition plate 32 be large. Therefore, in the heat exchange ventilation device 100 of the embodiment, as shown in Figure 2, the height H31 of the first partition plate 31 is substantially the same as the height H32 of the second partition plate 32. Substantially the same means that the difference due to measurement error is not included. The height H31 of the first partition plate 31 may be about the same as the height H32 of the second partition plate 32. For example, in the height direction, the overlap between the first partition plate 31 and the second partition plate 32 is preferably 80% or more of the height of the first partition plate 31 when viewed from the front-to-back direction, and more preferably 90% or more. In this case, the intrusion of air SA into the return air space 34c can be reduced, so short circuits are less likely to occur, and the decrease in the heat exchange efficiency of the heat exchange ventilation device 100 can be suppressed.

[0033] The operation of the heat exchange ventilation system 100 configured in this way will now be explained. As shown in Figure 3, when the first blower 24 is activated, outdoor air OA is drawn into the heat exchange ventilation system 100 from the outside air intake 9, and an air supply flow 4 is generated in the air supply passage 14. When the second blower 25 is activated, air RA from the indoor space 17 is drawn in from the return air opening 12, and an exhaust flow 3 is generated in the exhaust passage 15. Heat exchange takes place between the exhaust flow 3 and the air supply flow 4 as they pass through the heat exchange element 13. After heat exchange, the air supply flow 4 is supplied to the indoor space 17 from the air supply opening 11 through the air supply passage 14. After heat exchange, the exhaust flow 3 is exhausted outdoors from the exhaust outlet 10 through the exhaust passage 15. This operation allows for ventilation of the indoor space 17 while suppressing temperature changes in the indoor space 17.

[0034] The features of the heat exchange ventilation device 100 configured in this way will now be described. The heat exchange ventilation device 100 according to this embodiment comprises a housing 30 having an air supply opening 11 and an air return opening 12 on its bottom surface 30f, and a louver 38 provided to cover the air supply opening 11 and the air return opening 12. The housing 30 is provided with a first partition plate 31 that rises from between the air supply opening 11 and the air return opening 12. The louver 38 is provided with a second partition plate 32 that rises toward the housing. The first partition plate 31 is provided so as to overlap at least a part of the second partition plate 32.

[0035] This configuration suppresses short-circuiting, where air SA blown out from the intake opening 11 is drawn into the return opening 12, thereby suppressing a decrease in heat exchange efficiency.

[0036] An overview of one aspect of this disclosure is as follows: (Item 1) A heat exchange ventilation device (100) comprising a housing (30) having an air supply opening (11) and an air return opening (12) on its bottom surface (30f), and a louver (38) provided to cover the air supply opening (11) and the air return opening (12), wherein the housing (30) is provided with a first partition plate (31) that rises from between the air supply opening (11) and the air return opening (12), the louver (38) is provided with a second partition plate (32) that rises toward the housing (30), and the first partition plate (31) is provided so as to overlap at least a part of the second partition plate (32).

[0037] (Item 2) The heat exchange ventilation device (100) described in item 1 is provided with the second partition plate (32) on the side of the air supply opening (11) that is adjacent to the first partition plate (31).

[0038] (Item 3) A heat exchange ventilation device (100) according to item 1, wherein a packing (33) is provided on the contact surface between the first partition plate (31) and the second partition plate (32).

[0039] (Item 4) A ventilation space (34a) is formed between the housing (30) and the louvers (38), and the ventilation space (34a) includes a supply air space (34b) and a return air space (34c) partitioned by the first partition plate (31) and the second partition plate (32), the supply air space (34b) is the space facing the supply air opening (11), and the return air space (34c) is the space facing the return air opening (12), and the volume of the supply air space (34b) is smaller than the volume of the return air space (34c), as described in item 1, the heat exchange ventilation device (100).

[0040] (Item 5) The heat exchange ventilation device (100) described in item 4, wherein the bottom surface (30f) of the housing (30) faces the above air supply space (34b), the louvers (38) face the below air supply space (34b), and the sides of the air supply space (34b) are open except for the first partition plate (31) and the second partition plate (32).

[0041] (Item 6) The heat exchange ventilation device (100) described in item 1, wherein the height of the first partition plate (31) is substantially the same as the height of the second partition plate (32).

[0042] The present disclosure has been described above based on examples. These examples are illustrative, and it will be understood by those skilled in the art that various modifications are possible for each component or combination of processing steps, and that such modifications are also within the scope of the present disclosure. [Industrial applicability]

[0043] The heat exchange ventilation system according to the present invention is effective for applications as a heat exchange ventilation system aimed at exchanging heat between outside air and indoor air. [Explanation of Symbols]

[0044] 3 Exhaust flow, 4 Supply air flow, 17 Indoor space, 18 Ceiling, 9 Outside air intake, 10 Exhaust outlet, 11 Supply air opening, 12 Return air opening, 13 Heat exchange element, 14 Supply air passage, 15 Exhaust air passage, 24 First blower, 25 Second blower, 30 Housing, 30a Top surface, 30b, 30c, 30d Sides, 30f Bottom surface, 31 First partition plate, 32 Second partition plate, 33 Packing, 34a Ventilation space, 34b Supply air space, 34c Return air space, 38 Louver, 100 Heat exchange type ventilation device.

Claims

1. A housing having an air intake opening and a return air opening on the bottom, The system includes a louver provided to cover the aforementioned air supply opening and the aforementioned air return opening, The housing includes a first partition plate that rises from between the air intake opening and the air return opening, The louvers are equipped with a second partition plate that stands upright toward the housing, The first partition plate is provided so as to overlap at least a portion of the second partition plate. Heat exchange ventilation system.

2. The heat exchange ventilation device according to claim 1, wherein the second partition plate is provided on the side of the air supply opening that is closer to the first partition plate.

3. The heat exchange ventilation device according to claim 1, wherein a packing is provided on the contact surface between the first partition plate and the second partition plate.

4. A ventilation space is formed between the housing and the louvers. The ventilation space includes an air supply space and a return air space, which are partitioned by the first partition plate and the second partition plate. The aforementioned air supply space is the space facing the air supply opening, The aforementioned return air space is the space facing the return air opening, The volume of the supply air space is smaller than the volume of the return air space. The heat exchange ventilation device according to claim 1.

5. The bottom surface of the housing faces the air intake space above, and the louvers face the air intake space below, The sides of the aforementioned air supply space are open, except for the first partition plate and the second partition plate. The heat exchange type ventilation device according to claim 4.

6. The height of the first partition plate is substantially the same as the height of the second partition plate. The heat exchange type ventilation device according to claim 1.

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