KR100616279B1 - Ventilator - Google Patents

Abstract

The present invention relates to a fan that can obtain a high efficiency even when using a low-speed motor as well as a high-speed motor in the exhaust fan forcibly sucked indoor air and discharged to the outside.

The ventilator according to the present invention has a remarkable effect of improving the discharge efficiency of the indoor air and reducing the noise by increasing the amount of air generated compared to the wind pressure in the suction and discharge of the indoor air.

Ventilator; Deflector; Retreat

Description

Ventilator {VENTILATOR}

1 is a view showing a conventional ventilator.

Figure 2 is a view showing another conventional fan.

3 is a bottom view of the ventilator according to the present invention.

4 is an exploded perspective view of the ventilator according to the present invention.

5 is a perspective view of a rotating member of the fan according to the present invention.

6 is a cross-sectional view of the fan according to the present invention.

*** Explanation of symbols on the main parts of the drawing ***

100: ventilator 110: casing scroll

112: accommodation space 114: guide surface

116: outlet 118: turning screw

119: locking projection 120: drive motor

130: rotating member 132: lower plate

134: rotary blade 136: fixed ring

140: grill

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ventilator, and more particularly, to a ventilator capable of obtaining high efficiency even when a low speed motor is used as well as a high speed motor in a ventilator that forcibly sucks indoor air and discharges it to the outside.

Generally, the ventilator is installed in the interior of a building, for example, a wall or a ceiling of a bathroom or a toilet, and sucks the turbid air in the room and discharges it through the duct to the outside of the building to purify the indoor air and discharge the odor. Will be

Such a conventional ventilator is shown in FIG. 1. Fig. 1 is a view showing a conventional ventilator. Fig. 1 (a) is a bottom view showing a part of a conventional ventilator, and Fig. 1 (b) is a sectional view of a conventional ventilator. As shown in FIG. 1 (a) and FIG. 1 (b), the conventional ventilator includes a receiving space 11 into which indoor air is introduced, a guide surface 12 and a discharge port 13 which guide the introduced air to the outside. Casing scroll (10) having a, the drive motor 20 is mounted to the inside of the casing scroll, the rotating member is mounted to the rotary shaft 21 of the drive motor is rotated by receiving the rotational force of the drive motor to rotate the inlet and discharge the indoor air 30, the protective cover 40 for protecting the rotating member and the grill 50 is formed on the bottom surface of the casing scroll 10, the air passage 51 is formed.

In particular, the conventional ventilator was used as a blade 31 of the rotating member 30, the turning blade formed by bending toward the rotation direction of the rotating member due to the drive motor 20. Therefore, the conventional rotating member 30 is not surrounded by the inflow of air into the outlet 13 to be discharged.

However, the conventional ventilator shown in FIGS. 1 (a) and 1 (b) has a problem in that efficiency is lowered and noise is increased because the turning target 31 of the rotating member 30 only rotates the wind. That is, the wind volume and the wind pressure structure due to the rotation of the deflecting target 31 does not fit the reality there was a problem that the power of the drive motor 20 is also limited to a small low capacity. More specifically, in the case of using the typical feather, the wind pressure increases, but the efficiency decreases according to the wind pressure, so in order to generate a certain amount of wind volume, the rotary member must be rotated at high speed, thereby increasing noise. In addition, since the deflector 31 wraps the air in the room inhaled and moves to the discharge port 13, lift resistance is generated when the deflector turns, and the wind tunnel force of which the lift resistance is missing from the deflector is discharged to the outside. There is a problem in that the air volume and the wind pressure is reduced to reduce the efficiency of the device. Therefore, there is a problem that noise increases when rotating at high speed.

In order to solve the problems of the conventional fan, another type of fan is proposed, for example, the Republic of Korea Patent No. 0394871. The registered patent is shown in FIG.

Figure 2 is a view showing another conventional fan, Figure 2 (a) is a bottom view of a portion of another conventional blower, Figure 2 (b) is a cross-sectional view of another conventional fan. As shown in Fig. 2 (a) and 2 (b), another conventional ventilator is provided on one side of the lower plate formed with the insertion hole in which the rotating member 35 is inserted into the rotating shaft 21 of the drive motor 20. It was configured to be made of a streamlined backwards (36) rounded to the outside, it was provided on the guide surface 12 of the receiving space 11 was provided with an air guide member 60 to facilitate the inflow of air. In other words, the registered patent used a vane 36 is formed by bending in the direction opposite to the rotation direction of the rotating member 35, the blade of the rotating member (35). Therefore, the registered patent pushes the indoor air introduced while the rotating member 35 rotates to be discharged to the discharge port 13. In addition, since the backward feather only encloses the air and pushes the air without discharging it to the discharge port, it is applied to the region adjacent to the rotating member of the inner side of the casing scroll to direct wind (flow of indoor air) generated by the rotating member. In order to form a diffuser (defuser) formed in the shape of the deflector.

As described above, the registered patent forms a pressure by applying the rotating member 35 in a lifting type structure to maximize the amount of air compared to the same standard to smoothly discharge the air in the room, and the rearward blade 36 of the rotating member lifts. Formed in a streamlined shape with a large amount of air naturally to reduce the noise generated during operation of the device.

However, the registered patents shown in FIGS. 2 (a) and 2 (b) have a decrease in pressure while increasing air volume. Therefore, when using a high speed motor, a constant discharge efficiency can be obtained, whereas when using a low speed motor, especially a motor of 3600 RPM or less, since pressure is not formed, the pressure is not greatly reduced and the direction is not good, thereby showing proper function. There was a problem that can not. In particular, when the air discharged from the fan, such as the apartment is discharged through the duct is required a certain level or more pressure (150 to 200 Pascal or more), it is difficult to apply a motor having a high RPM to the fan in reality. Therefore, there is a problem that it is difficult to apply to the ventilation structure such as an apartment.

The present invention has been presented to solve the above problems, and an object of the present invention is to increase the air discharge efficiency of the rotating member by increasing the air flow rate compared to the same pressure even when using a high-speed motor as well as a low-speed motor as a drive motor In addition to providing a fan that can significantly reduce the noise caused by the rotation of the rotating member.

In order to achieve the above object, the ventilator according to the present invention is an exhaust fan embedded in the wall and / or ceiling of the building to suck the air in the room and discharge it to the outside of the building, the amount formed open to the interior and exterior of the building Casing scroll having an end portion, through which both ends are penetrated, a driving motor for generating rotational force to the rotating shaft upon receiving power, and mounted to the rotating shaft of the driving motor to suck and discharge indoor air while rotating by the rotating force, A rotating member including a blade, wherein each of the rotary blades is formed by a rearward blade which is bent in a direction opposite to the direction of rotation of the rotating member, and another part of the blade is turned toward the direction of rotation of the rotating member; Characterized in that it is formed of a feather.

Preferably, the casing scroll is formed in a recessed shape to the inside of the bottom portion which is open toward the interior of the building, the accommodation space in which the sucked indoor air is accommodated, is provided on one surface of the casing scroll, and is opened toward the outside of the building And a guide surface that is an inner side surface of the casing scroll from the bottom portion to the outlet portion to be formed, and the discharge port is disposed on the side portion of the rotating member, and is disposed between the horizontal extension line of the upper end of the rotating member and the horizontal extension line of the lower end of the rotating member. It is to include at least the area of the. In addition, each of the rotary blades is an inner region adjacent to the rotation axis is formed by the rear feathers, the outer region of the outer region of the inner region is formed to be a turning blade, the rotating member is formed with an insertion hole into which the rotating shaft of the drive motor is inserted It is a flat plate shape, and is attached to a lower plate on which the first end of each rotary blade is mounted on the bottom, and a second end opposite to the first end of each rotary blade, thereby fixing and connecting the second end of each rotary blade. It further includes a ring. The casing scroll is disposed at a position spaced a predetermined distance apart from the rear surface of the casing scroll by one or more turning screws that are fastened and exposed to the edge portion of the bottom surface of the casing scroll, and the one or more locking stones whose one end is fastened to the turning screw. It further comprises a group, each locking projection is rotated by a predetermined angle by the rotation of each of the turning screw to be exposed or concealed to the outer edge of the casing scroll.

Hereinafter, with reference to the accompanying drawings will be described in detail the advantages, features and preferred examples of the present invention.

3 is a bottom view of the ventilator according to the present invention, a bottom view of a state in which a part of the ventilator is cut away, FIG. 4 is an exploded perspective view of the ventilator according to the present invention, and FIG. 5 is a rotating member of the ventilator according to the present invention. Perspective view. In addition, Figure 6 is a cross-sectional view of the fan according to the present invention, Figure 6 (a) is a cross-sectional view of the fan according to the present invention from the front, Figure 6 (b) is a fan of the present invention viewed from the left side It is a cross section of the condition. Referring to Figures 3 to 6 will be described below the configuration of the fan and the function of each component according to the present invention.

Ventilator 100 according to the present invention is buried in the wall or ceiling of a building, etc. while the rotating member 130 is rotated by the rotational force of the drive motor 120 to suck the air in the room, push the sucked air of the building A device for discharging to the outside, the casing scroll 110 having an open end toward the inside and outside of the building, the drive motor 120 mounted in the casing scroll, the rotating member 130 mounted on the drive motor and the casing scroll The grill 140 is mounted to the open bottom of the.

The casing scroll 110 according to the present invention forms an intake space of indoor air and is a component in which components such as a driving motor and a rotating member are mounted therein, and end portions which are open toward and inside the building are formed and both ends are formed. Are formed through each other inside the casing scroll (110). The casing scroll 110 is formed in a recessed shape toward the inside of the receiving space 112 for receiving the sucked air, the guide surface 114 and the guide surface is formed in the periphery of the receiving space to guide the suctioned air to the outlet 116 It is formed through the end of the discharge port 116 is discharged air is discharged is provided. That is, the receiving space 112 represents a space recessed from the end (bottom) of the casing scroll 110 open toward the interior toward the inside of the casing scroll, and the outlet 116 is a casing scroll opened toward the outside of the building. Indicates the end of. In addition, the guide surface 114 represents the inner surface of the casing scroll from the receiving space to the outlet, the ventilator 100 according to the present invention is formed by the smooth curved surface of the guide surface flow to the outlet of the air sucked into the receiving space naturally Make it happen. If the guide surface 114 is composed of an angled surface rather than a curved surface, the intake air moves to the discharge port, so that the air flow is blocked or not smooth at the bent portion of the guide surface, thereby lowering the indoor air discharge efficiency. Therefore, the ventilator 100 according to the present invention forms a guide surface with a smooth curved surface to remove the obstacle of the air flow so that the sucked air can flow smoothly to the outlet 116.

On the other hand, the outlet 116 is to be arranged on at least the same line as the horizontal extension line of the rotating member 130. If the discharge port 116 is disposed somewhat above or below the same line as the horizontal extension line of the rotating member 130, the air discharged by the rotating member hits the inner side of the casing scroll 110, and then the inner side is closed. As a result, it is introduced into the outlet. This may act as a factor that lowers the air discharge efficiency of the rotating member 130. Therefore, the outlet 116 is disposed on the horizontal extension line of the rotating member 130 such that the air discharged by the rotating member flows directly into the outlet without any obstacle. At this time, the region of the outlet 116 may be configured to include a vertical region of the rotating member 130. That is, the region of the discharge port 116 may be configured to include at least the region between the horizontal extension line of the rotating member 130.

In addition, the casing scroll 110 is to be provided with a plurality of screw 118 and the locking projection 119 in the edge portion in order to fix the fan 100 to the wall or ceiling. At this time, the turning screw 118 is formed to be exposed to the edge of the bottom of the casing scroll, the locking projection 119 is to be disposed on the back portion of the edge of the casing scroll. In addition, the locking protrusion 119 is spaced apart from the rear surface of the edge of the casing scroll a predetermined distance. The spaced distance may be equal to the thickness of the edge portion of the wall or ceiling space in which the fan 100 is embedded.

The locking protrusion 119 is rotated in accordance with the rotation of the screw while one end is fastened to the screw 118. Therefore, the locking projection 119 disposed in a direction parallel to the edge of the casing scroll is rotated 90 degrees by the turning screw when the turning screw 118 is disposed so that it is disposed in a direction perpendicular to the edge of the casing scroll. It is exposed outside the edge of the casing scroll. Meanwhile, the screw 118 may not only rotate the locking protrusion 119 but also tighten the locking protrusion to adjust the separation distance between the rear surface of the edge of the casing scroll and the locking protrusion. In this case, even if the thickness of the edge portion of the wall surface or ceiling in which the fan 100 is embedded can be applied to both.

The drive motor 120 according to the present invention is a component mounted to the inside of the casing scroll 110 to rotate the rotation member 130, and receives the external power to convert it into a driving force to rotate the rotating shaft 122 Let's do it. The rotational force of the drive motor is transmitted to the rotating member 130 through the rotating shaft 122.

The rotating member 130 according to the present invention is mounted on the rotating shaft 122 of the drive motor 120 and rotates by receiving the rotational force from the rotating shaft to suck the indoor air into the accommodation space 112 and then discharge it to the outlet 116. It is a component. The rotating member 130 has a lower plate 132 having an insertion hole 133 mounted on the rotation shaft 122 of the driving motor on the rear thereof, and a plurality of rotating blades 134 around the insertion hole in front of the lower plate. Is mounted roundly. In addition, the front of the rotating member is equipped with a fixing ring 136 for connecting and fixing the end of each rotary blade 134, respectively.

The rotary blade 134 is densely mounted to the front of the lower plate 132 in a short shape to rotate and rotate by the rotating shaft 122 of the drive motor 120 to suck and discharge the indoor air. Rotating blade 134 is a rearward region that is in the longitudinal direction, that is, a predetermined region (hereinafter referred to as an 'inner region') adjacent to the rotating shaft 122 is turned toward the opposite direction of the rotation direction of the rotating member 130 The outer region in the longitudinal direction, that is, the region outside the inner region (hereinafter referred to as the 'outer region') is formed of a turning blade bent toward the rotation direction of the rotating member. That is, each of the rotary blades 134 is bent rearward with respect to the rotational direction of the rotating member to form a shape bent forward in the rotational direction at a predetermined position. The deflecting feather bent in the direction of rotation of the rotating member wraps around the air and rotates, so the effect of rotating the air is excellent while the noise increases. In addition, since the rearward blade bent in the opposite direction of the rotation direction of the rotating member rotates while pushing the indoor air, there is a problem that it is difficult to apply to a low-speed motor while high efficiency and low noise. Therefore, the rotary blade 134 according to the present invention by forming the inner region of the rear blades and the outer region of the turning blades, by pushing the interior air outwards and pushed out by the inner region (rear blade) of the rotary blades. The air is again enclosed by the outer area of the rotary blade (return blade) to rotate and discharge. In other words, the air deflected by the backwards feathers are collected by the backwards feathers are discharged. Therefore, the air volume increases with respect to the pressure (wind pressure), so that a large amount of air can be discharged even at the same pressure, so that the rotational speed of the motor does not have to be excessively increased to increase the air volume, thereby reducing noise. Therefore, even when the driving motor 120 is high speed as well as low speed, it is possible to increase the air discharge efficiency and to significantly reduce the noise. In addition, the amount of air sucked by the rear feathers to push and collect the air increases and the air pressure is also increased because the compression of the air occurs in the process of enclosing the exhaust feathers.

In addition, one end of each rotary blade 134 is mounted and fixed to the lower plate 132, the other end is fixed by a fixing ring 136. Therefore, both ends of each rotary blade are connected and fixed by the lower plate and the fixing ring, respectively.

The fixing ring 136 is a component for protecting each rotary blade 134, and connects one end of each rotary blade (one end opposite to the one fixed to the lower plate). The fixing ring is preferably mounted on the front side of the rotating member that is the opposite side of the lower plate. Since the rotor blade 134 is a sophisticated structure in which the inner region is formed of the backward feather and the outer region is formed of the deflector, it is likely to be damaged or broken during use. Thus, by connecting and fixing each rotary blade through the fixing ring 136 to protect the rotary blade from impact and to prevent damage.

The grill 140 according to the present invention is a component mounted on the open bottom of the casing scroll 110, and a plurality of passages 142 through which air in the room is introduced are formed. Therefore, the grill 140 protects the components inside the fan 100 and serves as a passage through which indoor air flows into the fan.

Referring to the operation of the ventilator 100 according to the present invention.

1. When power is applied to the drive motor 120, a rotational force is generated and the rotating shaft 122 rotates.

2. The rotating member 130 receives the rotational force from the rotating shaft is rotated, the air in the room is introduced through the passage 142 of the grill 140.

3. Air introduced through the grill is introduced into the receiving space (112).

4. The air flowing into the receiving space is pushed back by the rear blades of the inner region of each of the rotary blades 134 of the rotating member 132, and the air is rotated inward by the deflecting blades of the outer blades of the rotary blades to rotate inwardly. To guide. That is, the air introduced into the receiving space is guided by the rotating member and the guide surface 114.

5. The air guided by the rotating member moves along the curved surface of the guide surface 114 and is discharged through the discharge outlet 116. At this time, since the guide surface 114 is made of a smooth curved surface, air flows smoothly. In addition, since the discharge port 116 includes the same extension line as the horizontal extension line of the rotating member 130 or at least the horizontal extension line of the rotating member, the air flow discharged by the rotating member is not blocked and flows into the discharge port. do.

Next, the process of installing or separating the fan 100 according to the present invention on the wall or ceiling is as follows.

1. First, in order to install the fan, the fan 100 is inserted into the recessed wall surface or the space (buried space) so that the fan 100 is inserted.

2. Rotate each of the projections 119 to 90 degrees by turning the respective screw 118 exposed to the bottom of the casing scroll 110 (exposed surface of the embedded fan). Accordingly, each of the locking projections is perpendicular to the edge of the casing scroll, so that the locking projections are caught by the edge of the buried space. That is, the edge of the buried space is sandwiched between the edge of the casing scroll and the locking projection. Therefore, the fan 100 can be installed stably.

3. Next, in order to separate the fan 100 embedded in the wall or ceiling, each of the turning screws 118 is rotated to rotate the engaging projections 119 by 90 degrees. Therefore, each engaging projection that is perpendicular to the edge of the casing scroll is parallel to the edge of the casing scroll. Therefore, the state where the locking projection is caught in the edge portion of the buried space is released.

4. The fan 100 is taken out of the wall or ceiling buried space.

On the other hand, when each screw 118 is configured to tighten the locking projections rather than simply rotating the locking projections 119, that is, when adjusting the separation distance between the locking projection and the edge of the casing scroll 110, the ceiling Alternatively, the fan 100 may be fixedly installed by using a locking protrusion regardless of the thickness of the edge of the buried space of the wall.

As described above, the ventilator according to the present invention has a remarkable effect of improving the discharge efficiency of the indoor air and reducing the noise by increasing the amount of air generated compared to the wind pressure in the suction and discharge of the indoor air.

In other words, the effect of the fan according to the present invention is as follows.

First, in order to solve the shortcomings of the low efficiency of the deflector, by applying the highly efficient rearward vane with the deflector, it is possible to increase the generated air volume compared to the wind pressure, and the overall efficiency (intake) at the same pressure as the conventional fan is increased. About 5 to 10 percent. Therefore, in order to increase the air volume, it is possible to solve the problem of increasing the size of the rotating member and increasing airtightness. In addition, since the rotational speed of the drive motor does not have to be excessively increased, it is possible to reduce noise and to prevent failure of components such as the drive motor.

Secondly, not only increases the air volume at high pressure, but also can increase the air flow rate even for a low speed motor of 3600 RPM or less, which is suitable for a fan using a low speed motor. In the case of the conventional ventilator, in order to simultaneously improve the air volume and the air pressure, there is a restriction to increase the maximum rotational speed of the drive motor or increase the size of the rotating member and increase the overall airtightness. However, in reality, the domestic general ventilator uses a general AC single-phase motor, low noise is required, and the size of the rotating member is limited, so that the air volume and the wind pressure cannot be improved at the same time. However, the fan according to the present invention can obtain the required efficiency even when using a low-speed AC single-phase motor with a limited number of revolutions of 3600 RPM, it can be used in the optimum conditions for home fans.

Third, since the discharge port is provided on the same line as the horizontal extension line of the rotating member, and the discharge port includes at least an area formed by the extension lines of the upper and lower ends of the rotating member, the air discharged by the rotating member is free from any obstacles. It can be discharged directly to the outlet, so that the air is discharged smoothly. If, when the horizontal position of the rotating member and the discharge port is spaced apart or the jaw is present, the air discharged from the rotating member hits the step surface, etc. and then enters / exits to the discharge port through the step surface. Therefore, an obstacle occurs in the flow of air, thereby reducing the discharge efficiency. However, in the present invention, since there is no obstacle of air flow, the air flow is smooth and the discharge efficiency of indoor air is improved.

Fourth, by forming the inner side of the casing scroll, that is, the guide surface to a smooth curved surface, since the air introduced into the fan can move smoothly along the guide surface, the air discharge efficiency is improved.

Finally, since the fan can be fixed to the wall or the ceiling through a locking projection rotated 90 degrees by the screw, the installation work of the fan can be simplified and the working efficiency can be improved. In addition, when adjusting the separation distance between the edge of the casing scroll and the locking projection by tightening the locking projection, it can be installed on a wall or a ceiling having various thicknesses, and the range of application becomes wider.

While the preferred embodiments of the present invention have been described using specific terms, such descriptions are for illustrative purposes only, and it is understood that various changes and modifications may be made without departing from the spirit and scope of the following claims. Should be done.

Claims (6)

delete delete An exhaust fan embedded in the wall and / or ceiling of the building to suck the air in the room and discharge it to the outside of the building, A casing scroll having both ends open toward both the inside and the outside of the building, the casing scrolls having both ends penetrated therethrough; A drive motor that receives power and generates rotational force on the rotating shaft; And Is mounted to the rotary shaft of the drive motor to suck and discharge the indoor air while rotating by the rotational force, including a rotating member including a plurality of rotary wings, Each rotary blade, Some areas are formed of a backward feather bent in the opposite direction of the rotational direction of the rotating member, other portions are formed of a forward blade bent toward the rotational direction of the rotating member, The casing scroll, An accommodating space formed in a recessed shape inward of the bottom portion opened toward the inside of the building and accommodating the sucked indoor air; An outlet provided on one surface of the casing scroll and open toward the outside of the building; And A guide surface that is an inner side surface of the casing scroll from the bottom portion to the outlet, The outlet, And a fan disposed at the side of the rotating member, the fan including at least an area between the horizontal extension line of the upper end of the rotating member and the horizontal extension line of the lower end of the rotating member. delete An exhaust fan embedded in the wall and / or ceiling of the building to suck the air in the room and discharge it to the outside of the building, A casing scroll having both ends open toward both the inside and the outside of the building, the casing scrolls having both ends penetrated therethrough; A drive motor that receives power and generates rotational force on the rotating shaft; And Is mounted to the rotary shaft of the drive motor to suck and discharge the indoor air while rotating by the rotational force, including a rotating member including a plurality of rotary wings, Each rotary blade, Some areas are formed of a backward feather bent in the opposite direction of the rotational direction of the rotating member, other portions are formed of a forward blade bent toward the rotational direction of the rotating member, The rotating member, A lower plate having a flat plate shape having an insertion hole into which a rotation shaft of the driving motor is inserted, and having a first end of each of the rotary blades mounted on a bottom thereof; And And a fixing ring attached to a second end opposite to the first end of each of the rotary blades to connect and fix the second end of each of the rotary blades. An exhaust fan embedded in the wall and / or ceiling of the building to suck the air in the room and discharge it to the outside of the building, A casing scroll having both ends open toward both the inside and the outside of the building, the casing scrolls having both ends penetrated therethrough; A drive motor that receives power and generates rotational force on the rotating shaft; And Is mounted to the rotary shaft of the drive motor to suck and discharge the indoor air while rotating by the rotational force, including a rotating member including a plurality of rotary wings, Each rotary blade, Some areas are formed of a backward feather bent in the opposite direction of the rotational direction of the rotating member, other portions are formed of a forward blade bent toward the rotational direction of the rotating member, The casing scroll, At least one screw that is formed and exposed at the edge of the bottom of the casing scroll; And It is disposed at a position spaced apart from the rear surface of the rim of the casing scroll a predetermined distance, and further comprises one or more locking projections one end is fastened to the turning screw, And each of the locking protrusions is rotated by a predetermined angle by one rotation of each of the turning screws to expose or conceal the outer edge of the casing scroll.

Images