JP6038356B2 - Blower and air conditioner equipped with the blower - Google Patents

Description

  The present invention relates to a blower having a structure for discharging condensed water flowing down in a casing, and an air conditioner equipped with the blower.

Conventionally, when condensed water or the like flows into the blowing path of the blower, as a configuration for preventing the condensed water from scattering into the air blowing target space, for example, a water absorbing member is disposed in the blowing path, and the condensed water is temporarily A configuration is known that absorbs water and gradually vaporizes it by blowing air to treat the condensed water (see Patent Document 1).
In addition, a technique for vaporizing and treating condensed water by disposing a condensation sensor and a dew-proof heater around the air outlet and controlling the drive of the dew-proof heater according to a signal from the dew condensation sensor is also known. (See Patent Document 2).

Japanese Patent Laid-Open No. 08-002244 (see paragraph [0022], FIG. 6 etc.) Japanese Patent Laid-Open No. 02-154930 (refer to claims, FIGS. 1 and 2)

  In the conventional air blower, in the configuration in which the water absorbing member is arranged in the air passage as a countermeasure against the dew condensation water, the dew condensation water is supplied to the water absorption member at a speed exceeding the vaporization treatment, and the water content of the water absorption member exceeds a certain value. Then, the dew condensation water is scattered in the air current and is transported into the air blowing target space. Moreover, there existed a problem that air path resistance will increase and an air volume will decrease because a water absorbing member stands in an air path.

  In addition, even when a condensation sensor and a dew condensation heater are installed around the air outlet, the dew condensation water of a predetermined amount or more is not in time for the vaporization treatment by the dew condensation heater, and the inside of the air blow target space. Condensed water will scatter. In addition, since a control circuit is required, the dew-proof heater may not be driven due to problems such as sensor malfunction. Further, there is a problem that the installation cost is high.

  The present invention has been made to solve the above-described problems, and reliably discharges condensed water flowing into the air flow path out of the air flow path while minimizing an increase in air flow resistance. The purpose is to process.

The blower according to the present invention includes a blower casing housing a blower, a drain pan formed inward from an inner wall surface of the blower casing, a drain opening communicating with the drain pan and opening in the blower casing. The water-permeable member formed with the porous material is arrange | positioned between the air blower casing and the drain pan .

  According to the air blower according to the present invention, the dew condensation water that has flowed into the air flow path can be reliably discharged and processed outside the air flow path while minimizing an increase in air flow resistance.

It is a schematic sectional drawing at the time of mounting the air blower concerning Embodiment 1 in the indoor unit of an air conditioning apparatus. 2 is a vertical sectional view of the air blower according to Embodiment 1. FIG. 1 is a perspective view of a blower device according to Embodiment 1. FIG. 3 is a horizontal (AA) cross-sectional view of the blower according to Embodiment 1. FIG. 5 is a vertical cross-sectional view showing an inner wall (VIEW direction in FIG. 4) of the blower according to Embodiment 1. FIG. 2 is an enlarged cross-sectional view of a drain pan according to Embodiment 1. FIG. It is a perspective view which shows the drain pan of the air blower which concerns on Embodiment 2. FIG. 6 is an enlarged cross-sectional view of a drain pan according to Embodiment 2. FIG. It is a perspective view which shows the drain pan of the air blower which concerns on Embodiment 3. FIG. It is a perspective view which shows the drain pan of the air blower which concerns on Embodiment 4. FIG.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
In addition, the structure demonstrated below is an example and the air blower which concerns on this invention is not limited to such a structure.
Further, the illustration of the fine structure is simplified or omitted as appropriate.
In addition, overlapping or similar descriptions are appropriately simplified or omitted.

Embodiment 1 FIG.
FIG. 1 is a schematic cross-sectional view when the air blower according to Embodiment 1 is mounted on an indoor unit of an air conditioner.
FIG. 2 is a vertical cross-sectional view of the air blower according to the first embodiment.
FIG. 3 is a perspective view of the air blower according to the first embodiment.
FIG. 4 is a horizontal (AA) cross-sectional view of the blower according to the first embodiment.
FIG. 5 is a vertical sectional view showing the inner wall (VIEW direction in FIG. 4) of the blower according to the first embodiment.
FIG. 6 is an enlarged cross-sectional view of the drain pan according to the first embodiment.

  As shown in FIG. 1, the air conditioner in which the air blower 4 according to the first embodiment is mounted has an air inlet 1 a that sucks indoor air in the upper part of the main body casing 1, and an air outlet 1 b in the lower part of the main body casing 1. This is a floor-standing large-capacity air conditioner that is formed. There is a heat exchange chamber in which two indoor heat exchangers 3 are arranged in an inverted V shape, for example, in the upper part in the main body casing 1, and a blower 4 is arranged in the lower part in the main body casing 1. A drain pan 13 that receives the condensed water generated in the indoor heat exchanger 3 is provided below the two indoor heat exchangers 3.

  The air conditioner according to Embodiment 1 blows cold air mainly from the lower part of the main casing 1 into a double floor such as a computer room, and cools each computer by blowing out the floor. Since computers are sensitive to water, countermeasures for condensed water are indispensable. The indoor heat exchanger 3 is a heat exchanger for processing sensible heat mainly generated from a computer or the like.

  The blower 4 includes a centrifugal fan 5 and a fan motor 6 in a blower casing 7 as shown in the vertical sectional view of FIG. The centrifugal fan 5 is disposed on the upper surface side of the blower casing 7 and is attached to a motor shaft that is a rotating shaft of the fan motor 6. The fan motor 6 is supported on one end side of the motor stay 14. Moreover, the other end side of the motor stay 14 is joined to the channel material 12 of the support | pillar arrange | positioned at the four corners of the air blower casing 7 mentioned later. As shown in FIG. 3, a suction opening 7 c communicating with the periphery of the rotating shaft of the centrifugal fan 5 is opened on the upper surface of the blower casing 7. The shape of the suction opening 7 c is circular with the shape of the suction port of the centrifugal fan 5. Further, a discharge opening 7 d through which air that has become high pressure due to the rotation of the centrifugal fan 5 flows out is opened on the lower surface of the blower casing 7. A flange portion 7f for securing the strength of the blower casing 7 is formed around the discharge opening 7d.

  As shown in the horizontal sectional view of FIG. 4, the blower casing 7 is a rectangular parallelepiped box body in which channel members 12 having L-shaped cross sections are arranged as support columns at four corners. Each side surface, upper surface, and lower surface of the blower casing 7 are formed of, for example, a steel plate or a resin plate. The upper casing 7a and the lower casing 7b are formed of two blocks.

  A drain pan 8 to be described later is formed on the inner wall surface of the lower casing 7b, and a gutter 10 is formed on the outer periphery of the lowermost portion. The gutter 10 is formed by bending the lower end of the lower casing 7b in the outer circumferential direction, and serves to receive condensed water flowing down to the outer circumferential surface of the lower casing 7b. The upper casing 7a may be configured as a separate body from the casing attached to the centrifugal fan 5, and may be engaged so as to be inserted into the casing of the centrifugal fan 5.

Next, the configuration of the drain pan 8 will be described below.
As shown in FIG. 2, when condensed water generated in the indoor heat exchanger 3 of the air conditioner flows into the blower casing 7 below the inner wall surface of the blower casing 7, the condensed water A drain pan 8 is formed to discharge the air to the outside of the blower casing 7. The drainage pan 8 is formed by bending the upper ends of the four surfaces of the lower casing 7b toward the inside of the blower casing 7, and as shown in FIG. 6, has an inclination having a gradient descending from the inside to the outside of the blower casing 7 It comprises a surface 8b (corresponding to the first surface of the present invention) and a vertical surface 8a (corresponding to the second surface of the present invention) rising from the tip of the inclined surface 8b so as to be parallel to the side surface of the blower casing 7. ing.

  Moreover, the longitudinal direction of the inclined surface 8b has no gradient and is configured to be horizontal. Between the upper casing 7a and the ridgeline 8d where the inclined surface 8b of the lower casing 7b is bent, a slit 11 through which condensed water passes is opened. In addition, the cross-sectional shape of the drain pan 8 is not limited to such a two-surface configuration, and may be an arc shape.

  The drain pan 8 will be described with reference to cross-sectional views of the blower 4 shown in FIGS. As shown in FIG. 4, the inclined surface 8b is formed in a horizontal dimension that avoids the portions of the channel material 12 provided at the four corners of the blower casing 7, and the slit 11 is opened corresponding to the length of the inclined surface 8b. doing. Further, as shown in FIG. 5, when viewed from the inner wall of the blower casing 7, the channel material 12 is provided at both ends, and the vertical surface 8 a of the drain pan 8 is extended therebetween. The slit 11 opens in the blower casing 7 hidden behind the vertical surface 8a.

  In the four corners where the channel material 12 is provided on the inner wall surface of the blower casing 7, the four corner drainage that drains the condensed water that has led to the inner wall side of the channel material 12 toward the inclined surface 8 b of the drain pan 8. A pan 8c is provided. As shown in FIG. 4, the four-corner drain pan 8c has a width dimension narrower than that of the inclined surface 8b by the thickness of the channel member 12 in accordance with the depth dimension of the inclined surface 8b.

  The cross-sectional shape of the four-corner drain pan 8c may be a two-surface configuration matching the inclined surface 8b and the vertical surface 8a, or may be an arc shape. Then, the four corner drain pan 8c has an inclination in which the direction of the inclined surface 8b becomes lower as shown in FIG. 5 in order to guide the condensed water in the direction of the inclined surface 8b of the drain pan 8.

  A water passage member 9 is sandwiched and held between the upper casing 7 a and the vertical surface 8 a of the drain pan 8. The water-permeable member 9 can be employed as long as it is a water-permeable member such as glass wool, rock wool, urethane, sponge rubber, felt, filter paper, etc., which are porous bodies. The cross-sectional shape of the water flow member 9 is preferably a parallelogram as shown in FIG. 6 and is inclined so that the upper surface is lowered from the upper casing 7a side toward the apex of the vertical surface 8a of the drain pan 8. This is to reduce the flow path resistance by guiding the airflow blown down from the centrifugal fan 5 smoothly toward the center of the blower casing 7 and guiding the airflow to the flange portion 7f.

Next, the flow of condensed water when the air conditioner according to Embodiment 1 is operated will be described.
In the air conditioner shown in FIG. 1, if any trouble occurs in the drainage system due to the drain pan 13 (breakage of the drain pan 13 or clogging of the drainage system), the dew condensation water generated in the indoor heat exchanger 3 is transferred to the blower casing 7. May flow in.

The condensed water generated in the indoor heat exchanger 3 is sucked into the centrifugal fan 5 of the blower 4 and blown onto the inner wall surface of the blower casing 7. Then, it flows down the inner wall surface of the blower casing 7 and reaches the water passage member 9.
The condensed water that has reached the water passage member 9 passes through the water passage member 9, flows along the upper surface of the inclined surface 8 b of the drain pan 8, and passes through the slit 11. And the dew condensation water which flowed out of the blower casing 7 from the slit 11 comes out to the outer surface side of the lower casing 7b and flows down on the outer surface. The condensed water that has flowed down flows into a gutter 10 provided at the lower end of the lower casing 7b and is collected.

At this time, the gap portion between the main body casing 1 and the blower casing 7 is located on the negative pressure side of the blower 4, and therefore has a lower pressure than the inside of the blower casing 7. Then, due to this differential pressure, air flows out from the inside of the blower casing 7 through the water passage member 9 through the slit 11, so that condensed water is smoothly discharged from the inside of the blower casing 7.
By transporting the dew condensation water to the outside of the blower casing 7 with such a configuration, it is possible to prevent the dew condensation water from riding on the air flow of the blower 4 and scattering into the air-conditioning target space.

  The air blown out from the centrifugal fan 5 flows downward along the inner wall of the blower casing 7, but the cross-sectional shape of the upper surface of the water passage member 9 is a parallelogram as described above, and the upper surface is the upper casing. The airflow blown down from the centrifugal fan 5 is smoothly directed toward the center side of the blower casing 7 by being inclined from the 7a side toward the apex of the vertical surface 8a of the drainage pan 8, and is directed to the flange portion 7f. By guiding so as not to apply an air flow, the flow path resistance can be reduced.

  That is, the drainage pan 8, the water passage member 9, the eaves 10, and the slits 11 are configured in the blower casing 7 as described above, so that the condensed water is conveyed to the outside of the blower casing 7 and the flow path of the airflow. Resistance can be reduced.

Embodiment 2. FIG.
Since the air blower 4 according to the second embodiment is different in the configuration of the drain pan 8 and the slit 11 according to the first embodiment, the difference will be described.
FIG. 7 is a perspective view showing a drain pan of the blower according to the second embodiment.
The blower casing 7 according to the first embodiment is divided into an upper casing 7a and a lower casing 7b. A slit 11 is opened in a rectangular shape therebetween, and a drain pan 8 is horizontally arranged in the longitudinal direction. However, the blower casing 7 according to the second embodiment is integrally formed, and the drain pan 8 is disposed with an inclination in the longitudinal direction as shown by a broken line in FIG.

  The inclination of the drain pan 8 is V-shaped so that the center is the lowest, and has the same shape on the four side surfaces of the blower casing 7. And the drain outlet 7e is opening to the air blower casing 7 corresponding to the position where the drain pan 8 becomes the lowest. The drain port 7e can adopt various shapes such as a circle and a rectangle.

FIG. 8 is an enlarged cross-sectional view of the drain pan according to the second embodiment.
The drainage pan 8 is attached to the four side surfaces of the blower casing 7 by welding or the like if it is made of a steel plate, and is adhered by welding or an adhesive if it is made of resin. And the inclined surface 8b which has the gradient which falls toward the outer side from the inner side of the air blower casing 7 like Embodiment 1, and the vertical surface which stands up so that it may become parallel to the side surface of the air blower casing 7 from the front-end | tip of the inclined surface 8b 8a. In addition, the cross-sectional shape of the drain pan 8 is not limited to such a two-surface configuration, and may be an arc shape.

  Further, as in the first embodiment, the drain pan 8 has the channel material 12 in the channel material 12 provided at the four corners as described in the cross-sectional views of the blower 4 shown in FIGS. A four-corner drainage pan 8c is provided for guiding and draining the condensed water that has reached the inner wall side in the direction of the inclined surface 8b of the drainage pan 8.

  As shown in FIG. 8, a water passage member 9 is sandwiched and held between the blower casing 7 and the vertical surface 8 a of the drain pan 8. The water-permeable member 9 can be employed as long as it is a porous material such as glass wool, rock wool, urethane, sponge rubber, felt, filter paper, etc. It is the same. The cross-sectional shape of the water flow member 9 is preferably a parallelogram as shown in FIG. 8 and is inclined so that the upper surface is lowered from the blower casing 7 side toward the apex of the vertical surface 8a of the drain pan 8. .

Next, the flow of condensed water when the air conditioner according to Embodiment 2 is operated will be described.
The condensed water that has flowed down the inner wall of the blower casing 7 and reached the water passage member 9 passes through the water passage member 9 and flows along the upper surface of the inclined surface 8b of the drain pan 8 according to the V-shaped inclination. And if it flows down to the lowest position, it will pass the drainage port 7e of the air blower casing 7, will come out to the outer surface side of the air blower casing 7, and will flow down on an outer surface. The condensed water that has flowed down flows into a gutter 10 provided at the lower end of the blower casing 7 and is collected. In the first embodiment, the gutter 10 is installed on the entire periphery of the lower end of the blower casing 7 in correspondence with the slit 11, but in the second embodiment, only the lower part of the drainage port 7e is associated with the drainage port 7e. It is also possible to arrange them.

  At this time, the gap portion between the main body casing 1 and the blower casing 7 is located on the negative pressure side of the blower 4, and therefore has a lower pressure than the inside of the blower casing 7. Then, since air flows out from the inside of the blower casing 7 through the drain port 7e due to the differential pressure, the dew condensation water is smoothly discharged from the inside of the blower casing 7.

  With such a configuration, the dew condensation water is transported to the outside of the blower casing 7 with a simple configuration in which the blower casing 7 is provided with four drain outlets 7e, and the dew condensation water rides on the airflow of the blower 4 to be air-conditioned. It is possible to prevent scattering in the space. Further, the airflow member 9 is inclined so that the upper surface of the water flow member 9 is lowered from the blower casing 7 side toward the apex of the vertical surface 8a of the drain pan 8 so that the airflow blown down from the centrifugal fan 5 is smoothly blown. The flow path resistance can be reduced by moving toward the center side of 7 and guiding the air flow to the flange portion 7f.

Embodiment 3 FIG.
Since the air blower 4 which concerns on Embodiment 3 differs in the structure of the drain pan 8 which concerns on Embodiment 2, a different point is demonstrated.
FIG. 9 is a perspective view showing a drain pan of the blower according to the third embodiment.
In the blower casing 7 according to the second embodiment, the drain pan 8 is arranged on the four side surfaces so as to be inclined in a V shape in the longitudinal direction, but the drain pan 8 according to the third embodiment is shown in FIG. As shown by the broken line, the two faces are inclined in a V shape, and the other two faces are inclined in a mountain shape.

A drain outlet 7e is opened in the blower casing 7 at a position where the drain pan 8 inclined in a V shape is lowest. The drain port 7e can adopt various shapes such as a circle and a rectangle.
Moreover, the drain pan 8 arrange | positioned at mountain shape is connected to the both ends of the drain pan 8 arrange | positioned at the V-shape at the both ends.
And the shape of the water flow member 9 and the cross-sectional shape of the drain pan 8 are the same as those of the second embodiment as shown in FIG.

Next, the flow of condensed water when the air conditioner according to Embodiment 3 is operated will be described.
Condensed water that has flowed down the inner wall of the blower casing 7 and reached the water-permeable member 9 passes through the water-permeable member 9, and the upper surface of the inclined surface 8 b of the drain pan 8 follows the V-shaped inclination and the angle of the mountain shape. Flowing. The condensed water flowing down the angle of the mountain shape flows into both ends of the V-shaped drain pan 8. Then, when it flows down to the lowest position of the V-shaped drain pan 8, it passes through the drain port 7e of the blower casing 7 and exits to the outer surface side of the blower casing 7 to flow down on the outer surface. The condensed water that has flowed down flows into a gutter 10 provided at the lower end of the blower casing 7 and is collected. In addition, it is the same as that of Embodiment 2 that the gutter 10 can be disposed only in the lower part of the drainage port 7e so as to correspond to the drainage port 7e.

  With such a configuration, the dew condensation water is transported to the outside of the air blower casing 7 with a simple structure in which only two drain outlets 7e are provided in the blower casing 7, and the dew condensation water rides on the air flow of the blower 4 and is subject to air conditioning. It is possible to prevent scattering in the space. Further, the airflow member 9 is inclined so that the upper surface of the water flow member 9 is lowered from the blower casing 7 side toward the apex of the vertical surface 8a of the drain pan 8 so that the airflow blown down from the centrifugal fan 5 is smoothly blown. The flow path resistance can be reduced by moving toward the center side of 7 and guiding the air flow to the flange portion 7f.

Embodiment 4 FIG.
Since the air blower 4 according to the fourth embodiment is different in the configuration of the drain pan 8 according to the second and third embodiments, the difference will be described.
FIG. 10 is a perspective view showing a drain pan of the blower according to the fourth embodiment.
In the blower casing 7 according to the second embodiment, the drain pan 8 is arranged in the longitudinal direction so that the drain pan 8 is inclined in a V shape in the longitudinal direction, but the drain pan 8 according to the fourth embodiment is shown in FIG. As shown by the broken line, the two surfaces are inclined in a straight line, and the other two surfaces are inclined in a mountain shape (not shown) and a V shape.

A drain outlet 7e is opened in the blower casing 7 at a position where the drain pan 8 inclined in a V shape is lowest. The drain port 7e can adopt various shapes such as a circle and a rectangle.
Further, both end portions of the drainage pan 8 arranged in a mountain shape are connected to the most upstream part of the linear drainage pan 8. The most downstream part of the linear drainage pan 8 is connected to both ends of the drainage pan 8 arranged in a V shape.
And the shape of the water flow member 9 and the cross-sectional shape of the drain pan 8 are the same as those of the second embodiment as shown in FIG.

Next, the flow of condensed water when the air-conditioning apparatus according to Embodiment 4 is operated will be described.
The condensed water that has flowed down the inner wall of the blower casing 7 and reached the water passage member 9 passes through the water passage member 9. The condensed water flowing down the mountain-shaped slope flows into both ends of the V-shaped drain pan 8 via the linear drain pan 8. Then, when it flows down to the lowest position of the V-shaped drain pan 8, it passes through the drain port 7e of the blower casing 7 and exits to the outer surface side of the blower casing 7 to flow down on the outer surface. The condensed water that has flowed down flows into a gutter 10 provided at the lower end of the blower casing 7 and is collected. In addition, it is the same as that of Embodiment 2 that the gutter 10 can be disposed only in the lower part of the drainage port 7e so as to correspond to the drainage port 7e.

  With such a configuration, the dew condensation water is transported to the outside of the blower casing 7 with a simple configuration in which only one drain outlet 7e is provided in the blower casing 7, and the dew condensation water rides on the airflow of the blower 4 to be air-conditioned. It is possible to prevent scattering in the space. Further, the airflow member 9 is inclined so that the upper surface of the water flow member 9 is lowered from the blower casing 7 side toward the apex of the vertical surface 8a of the drain pan 8 so that the airflow blown down from the centrifugal fan 5 is smoothly blown. The flow path resistance can be reduced by moving toward the center side of 7 and guiding the air flow to the flange portion 7f.

  In the first to fourth embodiments, the blower is described as a centrifugal fan, but various blowers such as a mixed flow fan, an axial flow fan, and a sirocco fan provided with a scroll casing can be applied. Moreover, in Embodiment 2-4, although the drain pan 8 arrange | positioned in the V shape in the connection line on the inner wall face of the air blower casing 7 was employ | adopted, the structure where a center part becomes low, for example, a W shape, curve, etc. A shape and the like can be appropriately employed.

  DESCRIPTION OF SYMBOLS 1 Main body casing, 1a Inlet, 1b Outlet, 3 Indoor heat exchanger, 4 Blower, 5 Centrifugal fan, 6 Fan motor, 7 Blower casing, 7a Upper casing, 7b Lower casing, 7c Suction opening, 7d Discharge opening 7e Drain port, 7f Flange part, 8 Drain pan, 8a Vertical surface (second surface), 8b Inclined surface (first surface), 8c Four corner drain pan, 8d Ridge line, 9 Water flow member, 10 樋, 11 Slit, 12 channel material, 13 drain pan, 14 motor stay.

Claims (12)

A blower comprising: a blower casing housing a blower ; a drain pan formed inward from an inner wall surface of the blower casing; and a drain opening communicating with the drain pan and opening in the blower casing. A device,
Between the said air blower casing and the said drain pan, the water flow member formed with the porous material is arrange | positioned, The air blower characterized by the above-mentioned. The drain pan includes a first surface at one end to said blower casing is connected, in claim 1, characterized by being constituted by a second surface which is erected from the other end of the first surface The blower described. The blower according to claim 2 , wherein the first surface and the second surface of the drain pan are configured as arc-shaped surfaces. The blower according to claim 2 or 3 , wherein the water flow member is provided between the blower casing and the second surface. The blower according to any one of claims 2 to 4 , wherein the drain port is an opening communicating with the first surface. The blower according to any one of claims 2 to 5 , wherein an upper surface of the water flow member is provided with an inclination that descends from an inner wall of the blower casing toward the second surface. The blower according to any one of claims 2 to 6 , wherein the first surface has an inclination that descends from the second surface toward the drain port. The blower according to any one of claims 1 to 7 , wherein the drain pan is disposed in a horizontal direction on a connection line on an inner wall surface of the blower casing. The blower according to any one of claims 1 to 7 , wherein the drain pan is disposed to be inclined at a connection line on an inner wall surface of the blower casing. The blower according to any one of claims 1 to 7 , wherein the drain pan is provided with a gradient in which a central portion is concave in a connection line on an inner wall surface of the blower casing. . The blower device according to claim 10 , wherein the drainage port is opened at a position facing the central portion of the drainage pan in the blower casing. An air conditioning apparatus characterized by comprising a blower according to any one of claims 1 to 11.

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