Blower system and blower

Abstract

To provide a blowing system that can suppress the scattering of water droplets caused by airflow. [Solution] The blowing system has a blowing unit 3. The blowing unit 3 has a blowing device 30 that blows out gas, a heat exchanger 32 that uses liquid as a heat transfer medium to exchange heat with the gas blown out by the blowing device 30, and louver members 340A to 340D which include a plurality of plate-shaped members 3402 made of synthetic resin material and installed at an inclination with respect to the blowing direction. The louver members 340A to 340D are installed downstream of the blowing device 30 and the heat exchanger 32 in the blowing direction A.

Description

Technical Field

[0001] The present invention relates to a ventilation system and a ventilation device.

Background Art

[0002] For example, Patent Document 1 discloses an evaporator for drain water in an integrated air conditioner having a compressor, a condenser, an evaporator, and a blower inside. In the evaporator, drain water condensed and stored in a water storage tank is sprayed into a space formed on the back surface of the condenser through a pump from a spray nozzle disposed in the space. Further, Patent Document 2 discloses an air conditioner in which an air passage through which treated air flows is formed inside a casing, and the air passage is provided with humidifying means for imparting moisture to the treated air. The humidifying means includes a humidifying element and a frame for holding the outer peripheral edge of the humidifying element. The frame is configured to be a sealing member that suppresses leakage of the space between the humidifying element and the casing when attached to the inner surface of the casing. The air passage is composed of a first air passage located upstream of the humidifying means and a second air passage located downstream of the humidifying means. A humidifying passage for communicating the first and second air passages through the humidifying element is formed inside the frame.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0004] The purpose of this invention is to provide a blowing system that can suppress the scattering of water droplets caused by airflow. [Means for solving the problem]

[0005] The blowing system according to the present invention comprises a blowing device that blows out gas, a heat exchanger that uses liquid as a heat transfer medium to exchange heat with the gas blown out by the blowing device, and a louver member made of synthetic resin material and including a plurality of plate-shaped members that are inclined with respect to the blowing direction, wherein the louver member is provided downstream of the blowing device and the heat exchanger in the blowing direction.

[0006] Preferably, the louver member consists of a ventilation member provided in an opening of a building, the cross-sectional shape of the plate-shaped member in the louver member is flat or curved, and the distance between two adjacent plate-shaped members is such that it forms a gap for the discharged gas to pass through and captures water droplets.

[0007] Preferably, the blower includes a rotating body that delivers gas in the axial direction of the rotating shaft, the heat exchanger has a fin-and-tube structure that performs heat exchange using water as a medium, and the blower is positioned upstream of the heat exchanger in the direction of airflow.

[0008] Preferably, the system further includes a pump for drawing up groundwater from underground, the pump supplying the drawn groundwater to the heat exchanger via pipes, and the heat exchanger performing heat exchange using the supplied groundwater as a medium.

[0009] The blower unit according to the present invention comprises a blower that blows out gas, a heat exchanger that performs heat exchange using a liquid as a medium, and a louver member made of synthetic resin and including a plurality of plate-shaped members that are inclined with respect to the blowing direction, wherein the louver member is provided downstream of the blower and the heat exchanger in the blowing direction.

[0010] According to this invention, it is possible to suppress the scattering of water droplets caused by airflow. [Brief explanation of the drawing]

[0011] [Figure 1] This figure illustrates the general configuration of the air blowing system 1 in this embodiment. [Figure 2] This diagram illustrates the internal configuration of the blower unit 3 in the blower system 1. [Figure 3] Figure 2 is a diagram illustrating the detailed configuration of the louver member 340 shown as an example. [Figure 4] This is a schematic diagram illustrating the gas-liquid separation function of the water droplet scattering prevention member 34. [Modes for carrying out the invention]

[0012] Preferred embodiments of the present invention will be described in detail below with reference to the attached drawings. The dimensions, materials, and other specific numerical values ​​shown in these embodiments are merely examples to facilitate understanding of the invention and do not limit the present invention unless otherwise specified. In this specification and drawings, elements having substantially the same function and configuration are denoted by the same reference numerals to avoid redundant explanations, and elements not directly related to the present invention are omitted from the illustrations.

[0013] First, please refer to Figure 1 to explain the configuration of the air blowing system 1. Figure 1 is a diagram illustrating the schematic configuration of the blower system 1 in this embodiment. As illustrated in Figure 1, the ventilation system 1 is a heat exchange ventilation system for home or commercial use that uses a liquid supplied from an external source as a heat transfer medium and directly utilizes the sensible heat of that liquid. Unlike typical air conditioning systems that utilize the phase change (vaporization and liquefaction) of a refrigerant, the ventilation system 1 in this example is a ventilation system that does not use power such as a compressor. The liquid used in the blower system 1 may be, for example, water, antifreeze, or other cooling / heating media. If the liquid is water, it may be groundwater (well water, spring water, underground subsurface water), river water, tap water, or industrial water, or a mixture of these. In this example, the liquid used in the blower system 1 is water, specifically groundwater (well water). By using groundwater in the blower system 1 in this example, it is possible to maintain a nearly constant temperature throughout the year (for example, in the range of 10°C to 20°C, more specifically in the range of 14°C to 18°C), thereby obtaining stable heat exchange performance.

[0014] The ventilation system 1 includes a ventilation unit 3, a pump 5, a water lifting pipe 7, and a return pipe 8. The blower unit 3 is a heat exchange type blower for household or commercial use that directly utilizes the sensible heat of a liquid supplied from an external source as a heat transfer medium. In this example, the liquid used in the blower unit 3 is water, specifically groundwater (well water). The blower unit 3 is an indoor unit installed indoors and includes blower unit 3A and blower unit 3B. Note that blower unit 3A and blower unit 3B have substantially the same configuration and are simply referred to as blower unit 3 unless there is a need to distinguish between them. The detailed configuration of the blower unit 3 will be described later.

[0015] Pump 5 is a pump that draws groundwater W from the pumping well PW to the surface, supplies the drawn groundwater W to each blower unit 3 (blower unit 3A and blower unit 3B), and also functions to return the supplied groundwater W to the recirculation well RW. In other words, pump 5 combines both pumping and pressurizing / supplying functions in a single unit. Pump 5 supplies the groundwater W drawn from underground to the heat exchangers 32 (described later) included in each blower unit 3 via the supply piping 7.

[0016] The supply piping 7 is for pumping groundwater W from the pumping well PW and supplying the pumped groundwater W to the blowing unit 3. The supply piping 7 includes the pumping piping 7A and the supply piping 7B. The pumping pipe 7 is a pipe for pumping up the groundwater W from the pumping well PW. The pumping pipe 7 is installed inside the pumping well PW. One end of the pumping pipe 7 is arranged inside the groundwater W, and the other end of the pumping pipe 7 is connected to the pump 5. The supply pipe 7B is a pipe for supplying the groundwater W to the air blowing unit 3. The supply pipe 7B in this example is connected to each air blowing unit 3 (air blowing unit 3A and air blowing unit 3B) from the pump 5 respectively.

[0017] The recovery pipe 8 is a pipe for recovering the groundwater W from the air blowing unit 3 and returning the recovered groundwater W to the reduction well RW. The recovery pipe 8 includes a reduction pipe 8A and a recovery pipe 8B. The reduction pipe 8 is a pipe for returning the groundwater W discharged from the air blowing unit 3 to the reduction well RW. One end of the reduction pipe 8 is arranged inside the reduction well RW, and the other end of the reduction pipe 8 is connected to the recovery pipe 8B. The recovery pipe 8B is a pipe for recovering the groundwater W from the air blowing unit 3. One end of the recovery pipe 8B in this example is connected to each air blowing unit 3 (air blowing unit 3A and air blowing unit 3B) respectively, and the other end of the recovery pipe 8B is connected to the reduction pipe 8.

[0018] In this way, the air blowing system 1 in this example performs heat exchange in the process of flowing the groundwater W pumped up by the pump 5 inside the air blowing unit 3, and returns the groundwater W after heat exchange to the reduction well RW to circulate the groundwater W, so that while protecting the groundwater resources, continuous air conditioning (or air blowing) becomes possible.

[0019] Next, referring to FIGS. 2 and 3, the configuration of the air blowing unit 3 will be described. FIG. 2 is a diagram illustrating the internal configuration of the air blowing unit 3 in the air blowing system 1. As illustrated in Figure 2, the air blower unit 3 includes an air blower 30, a heat exchanger 32, a water droplet scattering suppression material 34, an air outlet 36, and a drain pan 38. Inside the air blower unit 3, the air blower 30, heat exchanger 32, water droplet scattering suppression material 34, and air outlet 36 are arranged in this order from upstream to downstream in the air blowing direction A of the air blower 30. A drain pan 38 is also provided below the heat exchanger 32 and the water droplet scattering suppression material 34.

[0020] The blower 30 is a device (blowering means) that sends out gas. The blower 30 only needs to be a device that pressurizes gas and forms a directional airflow, and may have a structure that includes a rotating body that sends out gas in the axial direction of the rotating shaft, or it may have a structure that does not include a rotating body (for example, a structure that draws in surrounding gas by gas ejected from a slit). In this example, the blower 30 uses a motor to rotate an impeller (propeller), which is a rotating body, to pressurize gas and send out a highly directional wind. Furthermore, if the blower 30 is an axial flow type structure that sends air in approximately the same direction as the rotation axis of the impeller, examples include a propeller fan, a tube axial fan, or a vane axial fan. The blower 30 in this example is a pressurized ventilation fan, which is a propeller fan structure used in ventilation fans or electric fans.

[0021] The heat exchanger 32 is a device that exchanges heat between a liquid (groundwater W) and a gas blown by a blower 30, using the liquid (groundwater W) as the heat transfer medium. The heat exchanger 32 has, for example, a fin-and-tube structure. If the heat exchanger 32 has a fin-and-tube structure, it may be a corrugated fin structure in which multiple wave-shaped fins are arranged between two adjacent pipes, or a plate fin structure in which multiple flat fins are arranged to penetrate multiple pipes. The heat exchanger 32 in this example has a corrugated fin structure which has excellent heat exchange efficiency. Furthermore, the heat exchanger 32 is made of a lightweight metal material with excellent heat dissipation (thermal conductivity). The heat exchanger 32 is made of, for example, copper, aluminum, or an alloy mainly composed of these materials. In addition, the heat exchanger 32 in this example is a general-purpose vehicle radiator, specifically a truck radiator. Furthermore, a recovery pipe 8B is provided at the top of the heat exchanger 32, and a supply pipe 7B is provided at the bottom. In other words, the recovery pipe 8B is located above the supply pipe 7B. The heat exchanger 32 receives groundwater W from the bottom of the heat exchanger 32 through the supply pipe 7B and discharges the groundwater W from the top of the heat exchanger 32 through the recovery pipe 8B. With this flow path configuration, the heat exchanger 32 can efficiently fill its interior with groundwater W.

[0022] The water droplet scattering suppression material 34 is a component that suppresses the scattering of condensation water generated on the fin surface of the heat exchanger 32 forward. The water droplet scattering suppression material 34 is installed at a predetermined angle with respect to the airflow direction A. The optimal angle (angle D1) at which the water droplet scattering suppression material 34 is installed is appropriately adjusted according to the inclination angle, cross-sectional shape, and spacing (flow path width S) of the plate-shaped members 3402 of the louver member 340, which will be described later, so as to an angle that efficiently catches only water droplets without obstructing the airflow.

[0023] Furthermore, the water droplet scattering suppression material 34 includes a louver member 340 and a holding member 342. The louver member 340 is made of a synthetic resin material and functions as a gas-liquid separator that separates gas and condensed water, thus functioning as a so-called eliminator. The louver member 340 in this example is a ventilation member that is generally used in building materials and installed in openings in buildings, for example, a door louver installed in doors and other fittings or ventilation openings. The louver member 340 also includes louver members 340A to 340D. The louver members 340A to 340D have substantially the same configuration, and unless there is a need to distinguish them, they are simply referred to as louver member 340. The louver members 340A to 340D are spaced apart from each other, fitted into the retaining member 342, and fixed by fastening members (screws, etc.). Further details of the louver member 340 will be described later.

[0024] The retaining member 342 is a plate-shaped frame member that holds a plurality of louver members 340. The retaining member 342 has a plurality of mounting holes 34A into which the plurality of louver members 340 (340A to 340D) are fitted. In this example, the retaining member 342 holds the plurality of louver members 340 in parallel with a predetermined interval in a direction perpendicular to the airflow direction A (for example, the up and down direction in Figure 2). Specifically, each louver member 340 (340A to 340D) is fixed to the plurality of mounting holes 34A formed on the surface of the retaining member 342 at a certain inclination angle.

[0025] Furthermore, the retaining member 342 may be made of a metal composite plate having a three-layer laminated structure in which metal layers are provided on both sides of a core material made of plate-shaped synthetic resin, or it may be a single metal plate or synthetic resin plate. In this example, the retaining member 342 is made of a metal composite plate. Examples of materials for the core synthetic resin include polyethylene, expanded polyethylene, expanded polystyrene, or flame-retardant resin. Examples of materials for the metal layer include aluminum, stainless steel, copper, titanium, or galvalume steel.

[0026] Furthermore, the overall thickness (total thickness) of the holding member 342 is, for example, 2.0 mm to 6.0 mm, preferably 2.0 mm to 4.0 mm, from the viewpoint of being able to withstand the wind pressure of the blower 30 and ensure rigidity to hold the multiple louver members 340, while also enabling mass production by die-cutting such as Thomson punching. In this example, the total thickness of the holding member 342 is 3.0 mm. Thus, because the retaining member 342 is a metal composite plate and its core material is synthetic resin, die-cutting such as Thomson die-cutting is possible. This allows for the easy and rapid formation of an opening for attaching the louver member 340, thereby improving production efficiency.

[0027] The air outlet 36 is an opening that sends the gas blown out by the blower 30 to the outside of the blower unit 3. In this example, the air outlet 36 has the shape of an outlet with vertical and horizontal blades arranged in a grid pattern on the opening surface. The blades provided in the air outlet 36 may be movable, allowing their tilt to be changed, or they may be fixed, with a fixed tilt. If movable blades are used, the direction of the airflow blown out to the outside can be arbitrarily changed. Furthermore, the air outlet 36 is formed on the downstream side in the airflow direction A of the air blowing unit 3. The air outlet 36 functions as an outlet for blowing gas, which is sent out from the air blowing device 30, whose temperature is adjusted by the heat exchanger 32, and whose water droplets have been removed by the water droplet scattering suppression member 34, out to the outside (indoor space) of the air blowing unit 3.

[0028] The drain pan 38 is a tray that receives water droplets (drain water) dripping from the heat exchanger 32 and the water droplet scattering suppression material 34. The drain pan 38 is installed below the heat exchanger 32 and the water droplet scattering suppression material 34, and specifically, it is installed to cover the area directly below the heat exchanger 32 and the water droplet scattering suppression material 34. The drain pan 38 collects at least the water droplets that condense on the surface of the heat exchanger 32 and the water droplets that are caught by the louver members 340 of the water droplet scattering suppression material 34. The drain pan 38 may also be equipped with a drainage path to discharge the collected drain water to the outside of the blower unit 3.

[0029] Figure 3 illustrates the detailed configuration of the louver member 340 shown in Figure 2. Figure 3(A) is a schematic diagram illustrating the louver member 340, and Figure 3(B) is a cross-section end view illustrating the louver member 340. As illustrated in Figure 3, the louver member 340 includes a plate-shaped member 3402 and a frame 3044. The plate-shaped member 3402 and the frame 3044 are integrally molded from synthetic resin. Multiple plate-shaped members 3402 are provided, arranged at a predetermined angle and spaced apart from one another. Each plate-shaped member 3402 is an individual plate-shaped fin member in the louver member 340. In this example, multiple plate-shaped members 3402 are provided at equal intervals. Multiple airflow channels (channels 3402A) are formed between the multiple plate-shaped members 3402 through which airflow passes. The distance between two adjacent plate-shaped members (channel width S, which is the width of the channel 3402A) is set to allow the discharged gas (airflow or wind) to pass through without obstruction, and to capture water droplets. From the viewpoint of ensuring sufficient ventilation while capturing water droplets, this channel width S is set to, for example, 5 mm to 20 mm, preferably 10 mm to 15 mm. If the channel width S is less than 5 mm, a water film is more likely to form between adjacent plate-shaped members 3402 due to the surface tension of condensed water WD, making it difficult for air to pass through. On the other hand, if the flow path width S exceeds 20 mm, the proportion of water droplets scattered from the heat exchanger 32 that pass through without contacting the plate-shaped member 3402 increases, and the gas-liquid separation performance deteriorates. Therefore, it is desirable to set the flow path width S at intervals of 5 mm to 20 mm (particularly 10 mm to 15 mm).

[0030] Furthermore, the cross-sectional shape of the plate-like member 3402 is not particularly limited as long as it functions as a gas-liquid separator, but for example, it may be flat or bent. Specifically, the bent cross-sectional shape of the plate-like member 3402 may be a Z-shape with both ends bent in opposite directions, an L-shape with a partial bend, or a V-shape (U-shape). In this example, the cross-sectional shape of the plate-like member 3402 is a Z-shape with both ends bent in opposite directions.

[0031] The frame 3044 is a component that integrally holds multiple plate-shaped members 3402 arranged at equal intervals. The frame 3044 also functions as a mounting frame for attaching the louver members 340, which are fitted into the holding member 342. The frame 3044 is fixed to the holding member 342, for example, by fastening members (screws, etc.).

[0032] Next, referring to Figure 4, the function of gas-liquid separation by the water droplet scattering suppression material 34 will be explained. Figure 4 is a schematic diagram illustrating the gas-liquid separation process by the water droplet scattering suppression material 34. As illustrated in Figure 4, the airflow AC formed by the blower 30 passes through the heat exchanger 32, the water droplet scattering suppression material 34, and the air outlet 36 in that order. The airflow AC1 formed by the blower 30 undergoes heat exchange with the groundwater W as it passes through the heat exchanger 32, becoming a cooled airflow AC2. At this time, condensation water generated during cooling, or water droplets adhering to the surface of the heat exchanger 32, may mix with the airflow AC2 and scatter downstream in the blower direction A.

[0033] The airflow AC2 that flows into the water droplet scattering suppression material 34 passes through multiple channels 3402A formed between multiple inclined plate-shaped members 3402. At this time, the airflow AC2 passes along the inclined surface of the plate-shaped members 3402, bending its direction of flow. Meanwhile, the water droplets (drain water WD) contained in the airflow AC2 continue straight ahead, colliding with and adhering to the surface of the plate-shaped members 3402.

[0034] The airflow AC3 that passes through the plate-shaped members 3402 is blown out to the outside from the air outlet 36 as a clean gas from which moisture has been separated. Meanwhile, the drain water WD received by the plate-shaped members 3402 flows downward (in the direction of movement of the drain water WD) along the surface of the plate-shaped members 3402 due to its own weight, and is finally collected in the drain pan 38 (see Figure 2). At this time, since the louver member 340 is made of synthetic resin, secondary condensation is unlikely to occur on the surface of the louver member 340 itself, even in an environment where it is exposed to the airflow AC2 immediately after passing through the heat exchanger 32. In this way, it is possible to suppress the scattering of water droplets to the outside of the blower unit 3 while maintaining high heat exchange performance.

[0035] As explained above, in the blower system 1 of this embodiment, by using a synthetic resin material for the louver member 340, secondary condensation on the surface of the louver member 340 itself is less likely to occur compared to metal materials, even in environments exposed to cold air immediately after passing through the heat exchanger 32. This suppresses the scattering of water droplets from the air outlet 36 and reduces the risk of corrosion and rusting. Therefore, good maintainability can be maintained over a long period of time.

[0036] Furthermore, according to the ventilation system 1, by using a synthetic resin louver 340, which is commonly used in building materials, as the louver member 340 of the water droplet scattering suppression material 34, it is possible to miniaturize and reduce the cost of the entire device without having to newly design and manufacture dedicated ventilation parts.

[0037] Furthermore, according to the blowing system 1, groundwater (well water) is circulated inside the heat exchanger 32, and by utilizing the sensible heat of the groundwater, in summer, heat exchange can be performed between the groundwater, which remains relatively low (for example, around 15°C) throughout the year, and the high-temperature air sent out from the blowing device 30, thereby lowering the air temperature to near the dew point temperature. In winter, it is also possible to warm the air by utilizing the heat of the groundwater, which is higher than that of the outside air. Although embodiments of the present invention have been described above, the invention is not limited to these, and various modifications and additions are possible without departing from the spirit of the invention. [Explanation of Symbols]

[0038] 1: Blower system 3 (3A, 3B): Blower unit 7: Supply piping 7A: Water pumping piping 7B: Supply piping 8: Reducing piping 8A: Reduction piping 8B: Recovery piping 30: Blower 32: Heat exchanger 34: Water droplet scattering suppression material 340 (340A~340D): Louver component 3402: Plate-shaped member 3402A: Flow path 342: Retaining member 36: Air vent 38: Drain pan

Claims

1. A blower that sends out gas, A heat exchanger that uses a liquid as a heat transfer medium to exchange heat with a gas blown out by the blower, A louver member made of synthetic resin material, including a plurality of plate-shaped members arranged at an inclination with respect to the airflow direction. It has, The louver member is provided downstream of the blower and the heat exchanger in the direction of airflow. Ventilation system.

2. The aforementioned louver member consists of a ventilation member installed in an opening of a building. The cross-sectional shape of the plate-shaped member in the louver member is either flat or bent. The distance between the two adjacent plate-like members is such that it forms a gap for the discharged gas to pass through and also captures water droplets. The air blowing system according to claim 1.

3. The blower includes a rotating body that sends gas in the axial direction of the rotating shaft, The aforementioned heat exchanger has a fin-and-tube structure that performs heat exchange using water as a medium. The blower is positioned upstream of the heat exchanger in the direction of airflow. The air blowing system according to claim 2.

4. Pumps that draw up groundwater from underground Furthermore, The pump supplies groundwater drawn from underground into the heat exchanger via pipes. The heat exchanger performs heat exchange using the supplied groundwater as a medium. The air blowing system according to claim 3.

5. A blower that sends out gas, A heat exchanger that performs heat exchange using a liquid as a medium, A louver member made of synthetic resin, which includes a plurality of plate-shaped members arranged at an inclination with respect to the direction of airflow. It has, The louver member is provided downstream of the blower and the heat exchanger in the direction of airflow. Blower unit.

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