JP3803497B2 - Simultaneous fan - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a supply / exhaust simultaneous fan used for a ventilation fan and an air conditioner.
[0002]
[Prior art]
Conventionally, this type of simultaneous supply and discharge fan is known from Japanese Utility Model Publication No. 63-17948 or Japanese Utility Model Publication No. 6-3323. The simultaneous supply / discharge fan will be described with reference to FIGS.
[0003]
As shown in FIG. 7, an electric motor 101, an axial fan 102 that rotates by the electric motor 101 and exhausts, a bell mouth 103 that integrally covers the outer periphery of the axial fan 102, and the bell mouth 103 A centrifugal fan 105 is installed outside the bell mouth 103 and the orifice 104 installed in the foreground. The outside of the bell mouth 103 is surrounded by a box body 106, and the box body 106 is used for suction of the centrifugal fan 105. The orifice 107 is installed, and air is supplied by the rotation of the centrifugal fan 105.
[0004]
Further, as shown in FIG. 8, a centrifugal fan 115 in which an upper blade 113 and a lower blade 114 are integrated with a single wall 112 in a box body 111, and an electric motor 116 that rotates the centrifugal fan 115. Composed. By rotating the centrifugal fan 115, the upper blade 113 and the lower blade 114 separately supply and exhaust air, and a stationary heat exchange element 117 is installed in a passage where the air supply and exhaust intersect, and this heat exchange element At 117, sensible heat and latent heat are exchanged.
[0005]
[Problems to be solved by the invention]
In such a conventional simultaneous supply / discharge fan, blades for supplying and exhausting air are different from each other, and therefore, there is a problem that a ventilation path becomes complicated and a main body becomes large.
[0006]
Moreover, since it operates continuously, there exists a subject that it is necessary to suppress power consumption. Moreover, since it operates continuously, there exists a subject that the noise at midnight is large.
[0007]
In addition, there is a problem that there is a decrease in ventilation efficiency due to air leakage of supply air and exhaust. In addition, there is a problem that energy loss occurs due to a difference in indoor and outdoor temperatures during ventilation.
[0008]
In addition, there is a problem that energy loss occurs due to a difference in indoor and outdoor temperature and a humidity difference during ventilation.
[0009]
The present invention solves such a conventional problem, and air supply and exhaust are performed by the same blade, the air blowing path is simplified, and both the air supply and exhaust flows are blown in the direction of the rotation axis, and the small diameter is achieved. Can improve ventilation efficiency, can reduce noise, can prevent air leakage, can reduce sensible heat exchange energy loss, It is another object of the present invention to provide a supply / discharge simultaneous fan that can reduce the total heat exchange energy loss.
[0010]
[Means for Solving the Problems]
Supply and discharge simultaneously fan of the present invention, Yusuke order to achieve the above objectives, an impeller having a hub with a fixed lube blade to rotate by the electric motor and the electric motor and the rotary shaft, the body case to the outer periphery of the impeller in holder Kutofan, configured within a cavity of the blade, the cavity of the from the cavity of the indoor-side end portion in the rotation axis direction is indoor air sucked the outdoor-side end portion of the rotational axis of the blades of the blade the body of the casing outer peripheral side or we exhaust is Ru exhaust air passage before Symbol hub in the radial direction of the center side the blade from the inlet of the cavity end outdoor air is drawn of the blade in the circumferential direction of the end portion It is provided with an air supply passage that is supplied from the outlet of the outer peripheral cavity, and alternately includes the blades of the exhaust air passage and the blades of the air supply passage so that outdoor air does not mix with dirty air. Inhaled and said supply Through the air passage is obtained by a configuration in which supply air into the room from the main body casing outer peripheral portion.
[0011]
According to the present invention, it is possible to obtain a simultaneous supply / exhaust fan capable of reducing the diameter by supplying and exhausting air with the same blade, simplifying the blowing path, and blowing both the air supply and exhaust flow in the rotation axis direction. It is done.
[0012]
In another means, the cross section is perpendicular to the rotation axis of the impeller, and the straight line connecting the cavity inlet and the cavity outlet is inclined backward in the rotation direction from the radiation connecting the axis center and the cavity inlet. Is.
[0013]
According to the present invention, air supply and exhaust can be performed by the same blade, the air flow path can be simplified, both the air supply and exhaust flow can be blown in the direction of the rotation axis, the diameter can be reduced, and high efficiency can be achieved. A fan that can supply and discharge can be obtained.
[0014]
In another means, the line segment forming the blade is an arc or a curve in a cross section perpendicular to the rotation axis of the impeller.
[0015]
According to the present invention, air supply and exhaust can be performed by the same blade, the air flow path can be simplified, and both the air supply and exhaust flow can be blown in the direction of the rotation axis to reduce the diameter and reduce noise. Simultaneous supply / discharge fan is obtained.
[0016]
In another means, the hair suction fibers, the air supply / discharge portions, the air discharge / discharge portions, and the air supply / intake portions are attached to the separating portions that separate the rotating body and the stationary portion, respectively.
[0017]
According to the present invention, air supply and exhaust are performed by the same blade, the air flow path is simplified, both the air supply and the exhaust flow are blown in the direction of the rotation axis, the diameter is reduced, and air leakage is prevented. A simultaneous supply / discharge fan can be obtained.
[0018]
In another means, the blade is made of aluminum or resin, and sensible heat is exchanged between the supply air flow and the exhaust flow.
[0019]
According to the present invention, air supply and exhaust are performed by the same blade, the air supply path is simplified, both the air supply and exhaust flow are blown in the direction of the rotation axis, the diameter is reduced, and sensible heat energy loss is reduced. A simultaneous supply / discharge fan can be obtained.
[0020]
In another means, the material of the blade is made of paper or film, and sensible heat and latent heat are exchanged between the air supply flow and the exhaust flow.
[0021]
According to the present invention, air supply and exhaust are performed by the same blade, the air supply path is simplified, both the air supply and the exhaust flow are blown in the direction of the rotation axis, the diameter is reduced, and the total heat energy loss is reduced. A simultaneous supply / discharge fan can be obtained.
[0022]
DETAILED DESCRIPTION OF THE INVENTION
The present invention, inside the blades are configured emptied sinus, which has provided the supply ventilation passage to the outlet of the cavity of the blade outer peripheral part from the inlet of the cavity of the center of the blade hub, the shaft of the exhaust air roadside By adopting a flow-type blower shape and a centrifugal blower shape on the air supply air passage side, air can be supplied and exhausted simultaneously with one impeller and an electric motor, and separate blades are not required for exhaust and air supply. The ventilation path can be simplified, and the blowing direction of the exhaust gas and the supply air can be blown in the rotation axis direction.
[0023]
In addition, the cross section perpendicular to the rotation axis of the impeller is installed so that the straight line connecting the cavity inlet and the cavity outlet is inclined backward in the rotational direction from the radiation connecting the axis center and the cavity inlet. By making the airflow path side an axial flow fan shape and the air supply airflow path side a centrifugal blower shape, air can be supplied and exhausted simultaneously with one impeller and an electric motor, and the blade can be tilted backward with respect to the rotation direction. Therefore, since the load per rotation is reduced, the efficiency can be increased.
[0024]
Also, the cross section perpendicular to the rotation axis of the impeller is such that the line segment forming the blade is an arc or a curve, the exhaust ventilation path side is an axial flow fan shape, and the supply air ventilation path side is a centrifugal blower shape As a result, air supply and exhaust can be performed simultaneously with a single impeller and an electric motor, and disturbances between the blades can be reduced by making the blade shape a fluid flow.
[0025]
Also, the exhaust suction part, the supply air discharge part, the exhaust discharge part, and the supply air suction part are each provided with a hair fiber attached to a separation part that separates the rotating body and the stationary part, and the exhaust air passage side is connected to the axial flow type blower. With the shape and the air supply ventilation path side made into a centrifugal blower shape, air can be supplied and exhausted simultaneously with one impeller and electric motor, and air leakage between the flow of air supply and exhaust is blocked and rotated Friction can be prevented from increasing as much as possible.
[0026]
In addition, the blade material is made of aluminum or resin, and sensible heat exchange is performed between the supply air flow and the exhaust flow, and the exhaust ventilation path side has an axial flow fan shape, and the supply air ventilation path side has a centrifugal blower shape. Air supply and exhaust can be performed simultaneously with one impeller and an electric motor, and sensible heat exchange can be performed by exchanging enthalpy due to a temperature difference between air supply and exhaust.
[0027]
Also, the blade material is made of paper or film, and sensible heat and latent heat are exchanged between the supply air flow and the exhaust flow, the exhaust ventilation path side is an axial flow fan shape, and the supply air ventilation path side is a centrifugal blower shape. Thus, air supply and exhaust can be performed simultaneously with one impeller and an electric motor, and sensible heat and latent heat can be exchanged by exchanging enthalpy due to temperature difference and humidity difference between the air supply and exhaust.
[0028]
Embodiments of the present invention will be described below with reference to the drawings.
[0029]
【Example】
(Example 1) As shown in FIGS. 1 to 3, the electric motor 2 installed in the main body case 1, a rotating shaft impeller 5 having a hub 4 with a fixed lube blade 3 be rotated by the electric motor 2 9 , a louver 6 is installed on the indoor side, the blade 3 is formed in a bag shape in which the inside of the blade 3 is hollow, and the bag inlet 7 on the hub side of the hub 4 leads to the bag outlet 8 on the outer periphery of the blade 3. The supply air passage is provided in the shape of a centrifugal fan, and the exhaust air passage is provided in the shape of an axial flow fan.
[0030]
In the above configuration, dirty air on the indoor side is sucked from the center of the louver 6, passes through the main body case 1 inside the main body, and passes through the outdoor passage on the outer peripheral side of the main body case 1 by the blade 3 in the impeller 5. Exhausted outdoors. Further, fresh air sucked from outside is sucked so as not to be mixed with dirty air, and is carried to the cavity outlet 8 on the outer periphery of the blade 3 through the cavity inlet 7 on the center side of the hub 4 of the impeller 5. Since the air is supplied into the room from the outer periphery of the louver 6 through the indoor passage on the outer periphery of the main body case 1, the air supply path can be simplified, and the exhaust and supply air can be blown in the direction of the rotation axis. .
[0031]
(Example 2)
As shown in FIGS. 1, 2 and 4, has an impeller 5 having a hub 4 with a fixed lube blade 3 to rotate an electric motor 2 installed in the body case 1 by the motor 2, the indoor side A louver 6 is installed in the bag 3 so that the inside of the blade 3 is hollow, and an air supply ventilation path from the bag inlet 7 on the center side of the hub 4 to the bag outlet 8 on the outer periphery of the blade 3 is provided. It has a configuration. Further, in a cross section perpendicular to the rotation axis 9 of the impeller 5, the straight line 10 connecting the bag inlet 7 and the bag outlet 8 is inclined backward in the rotational direction from the radiation 11 connecting the shaft center and the bag inlet 7. is set up.
[0032]
In the above configuration, dirty air on the indoor side is sucked from the center of the louver 6, passes through the main body case 1 inside the main body, and passes through the outdoor passage on the outer peripheral side of the main body case 1 by the blade 3 in the impeller 5. Exhausted outdoors. Further, fresh air sucked from outside is sucked so as not to be mixed with dirty air, and is carried to the cavity outlet 8 on the outer periphery of the blade 3 through the cavity inlet 7 on the center side of the hub 4 of the impeller 5. Since the air is supplied into the room from the outer periphery of the louver 6 through the indoor passage on the outer periphery of the main body case 1, the blade 3 is inclined backward with respect to the rotation direction, so the load per rotation is reduced. Can rise.
[0033]
Example 3
As shown in FIGS. 1, 2 and 5, has an impeller 5 having a hub 4 with a fixed lube blade 3 to rotate an electric motor 2 installed in the body case 1 by the motor 2, the indoor side A louver 6 is installed in the bag 3 so that the inside of the blade 3 is hollow, and an air supply ventilation path from the bag inlet 7 on the center side of the hub 4 to the bag outlet 8 on the outer periphery of the blade 3 is provided. It has a configuration. Moreover, it is installed so that the line segment forming the blade 3 may be an arc or a curve in a cross section perpendicular to the rotation shaft 9 of the impeller 5.
[0034]
In the above configuration, dirty air on the indoor side is sucked from the center of the louver 6, passes through the main body case 1 inside the main body, and passes through the outdoor passage on the outer peripheral side of the main body case 1 by the blade 3 in the impeller 5. Exhausted outdoors. Further, fresh air sucked from outside is sucked so as not to be mixed with dirty air, and is carried to the cavity outlet 8 on the outer periphery of the blade 3 through the cavity inlet 7 on the center side of the hub 4 of the impeller 5. Since air is supplied into the room from the outer periphery of the louver 6 through the indoor passage on the outer periphery of the main body case 1, it is possible to reduce turbulence between the blades by making the shape of the blade smooth.
[0035]
Example 4
As shown in FIGS. 1 and 6, it has an impeller 5 having a hub 4 with a fixed lube blade 3 to rotate an electric motor 2 installed in the body case 1 by the motor 2, the louver to the indoor side 6 Is installed in a bag shape in which the inside of the blade 3 is hollow, an air supply passage is provided from the bag inlet 7 on the center side of the hub 4 to the bag outlet 8 on the outer periphery of the blade 3, and an exhaust suction portion And the air supply / discharge portion, the air supply / discharge portion, and the separation portion 12 that separates the impeller 5 and the stationary portion from each other. It is possible to block the air leakage and prevent the rotational friction from increasing as much as possible.
[0036]
In the above configuration, dirty air on the indoor side is sucked from the center of the louver 6, passes through the main body case 1 inside the main body, and passes through the outdoor passage on the outer peripheral side of the main body case 1 by the blade 3 in the impeller 5. Exhausted outdoors. Further, fresh air sucked from outside is sucked so as not to be mixed with dirty air, and is carried to the cavity outlet 8 on the outer periphery of the blade 3 through the cavity inlet 7 on the center side of the hub 4 of the impeller 5. Then, the air is supplied into the room from the outer periphery side of the louver 6 through the indoor passage on the outer periphery of the main body case 1. At this time, since the hair fibers 13 prevent the exhaust gas and the air supply from mixing through the gap between the impeller 5, the main body case 1 and the main body stationary part, the air between the flow of the air supply and the exhaust gas It is possible to block leakage and prevent rotational friction from increasing as much as possible.
[0037]
(Example 5)
As shown in FIGS. 1 and 2, it has an impeller 5 having a hub 4 with a fixed lube blade 3 to rotate an electric motor 2 installed in the body case 1 by the motor 2, the louver to the indoor side 6 Is installed in a bag shape in which the inside of the blade 3 is hollow, and a supply air ventilation path from the bag inlet 7 on the center side of the hub 4 to the bag outlet 8 on the outer periphery of the blade 3 is provided. ing. Further, the blade 3 is made of aluminum or resin, and the sensible heat is exchanged between the supply air flow and the exhaust flow.
[0038]
In the above configuration, dirty air on the indoor side is sucked from the center of the louver 6, passes through the main body case 1 inside the main body, and passes through the outdoor passage on the outer peripheral side of the main body case 1 by the blade 3 in the impeller 5. Exhausted outdoors. Further, fresh air sucked from outside is sucked so as not to be mixed with dirty air, and is carried to the cavity outlet 8 on the outer periphery of the blade 3 through the cavity inlet 7 on the center side of the hub 4 of the impeller 5. Then, the air is supplied into the room from the outer periphery side of the louver 6 through the indoor passage on the outer periphery of the main body case 1. At this time, since the amount of heat of the exhausted air heated or cooled is used as the medium, the sensible heat can be exchanged by exchanging the enthalpy due to the temperature difference between the supply air and the exhaust.
[0039]
(Example 6)
As shown in FIGS. 1 and 2, it has an impeller 5 having a hub 4 with a fixed lube blade 3 to rotate an electric motor 2 installed in the body case 1 by the motor 2, the louver to the indoor side 6 Is installed in a bag shape in which the inside of the blade 3 is hollow, and a supply air ventilation path from the bag inlet 7 on the center side of the hub 4 to the bag outlet 8 on the outer periphery of the blade 3 is provided. ing. Further, the blade 3 is made of paper or film, and sensible heat and latent heat are exchanged between the supply air flow and the exhaust air flow.
[0040]
In the above configuration, dirty air on the indoor side is sucked from the center of the louver 6, passes through the main body case 1 inside the main body, and passes through the outdoor passage on the outer peripheral side of the main body case 1 by the blade 3 in the impeller 5. Exhausted outdoors. Further, fresh air sucked from outside is sucked so as not to be mixed with dirty air, and is carried to the cavity outlet 8 on the outer periphery of the blade 3 through the cavity inlet 7 on the center side of the hub 4 of the impeller 5. Then, the air is supplied into the room from the outer periphery side of the louver 6 through the indoor passage on the outer periphery of the main body case 1. At this time, since the amount of heat and humidity of the heated or cooled air is used as the medium for the blade 3, the sensible heat and latent heat can be exchanged by exchanging the enthalpy due to the temperature difference and humidity difference between the supply air and the exhaust gas. .
[0041]
【The invention's effect】
As apparent from the above examples, according to the present invention constitutes an internal blade emptied sinus, provided the supply ventilation passage to the outlet of the cavity of the blade outer peripheral part from the inlet of the cavity of the center of the hub As a result, the main body can be reduced in diameter, so that it is possible to provide a simultaneous supply / discharge fan that has the effect of easily installing the main body on a wall that has been drilled into a pipe diameter that is easy to construct for air conditioner piping.
[0042]
Furthermore, in cross section perpendicular to the axis of rotation of the impeller, by a straight line connecting the outlet of the inlet and the cavity of the cavity is arranged so that tilted backward in the rotation direction radiation which connects the inlet of the axial center and the cavity The main body can be reduced in diameter, and the main body can be easily installed on the wall that has been drilled for air conditioning piping, and at the same time, it is possible to provide a simultaneous supply and discharge fan that has the effect of improving efficiency.
[0043]
In addition, the cross section perpendicular to the impeller's rotation axis has a circular arc or curved line that forms the blade, allowing the main body to be reduced in diameter and easily installed on a wall that has been drilled for air conditioning piping. In addition, it is possible to provide a simultaneous supply and discharge fan that is effective in reducing noise.
[0044]
In addition, air supply and exhaust are performed by the same blade by attaching hair fibers to the separation part that separates the rotating body and the stationary part of the exhaust suction part, the supply and discharge part, the exhaust discharge part and the supply and suction part, respectively. Thus, it is possible to provide a simultaneous supply / exhaust fan that has an effect of simplifying the blowing path, blowing both the supply air and the exhaust flow in the direction of the rotation axis to reduce the diameter, and preventing air leakage.
[0045]
Also, the blade material is made of aluminum or resin, and sensible heat exchange is performed between the supply air flow and the exhaust flow, so that supply and exhaust air are performed by the same blade, simplifying the air flow path, and whether the supply air or exhaust flow is In addition, it is possible to provide a simultaneous supply and discharge fan that is effective in reducing the diameter by blowing air in the direction of the rotation axis and reducing sensible heat energy loss.
[0046]
Also, the blade material is made of paper or film, and sensible heat and latent heat are exchanged between the supply air flow and the exhaust flow, so that supply and exhaust are performed by the same blade, simplifying the air flow path, and supply and exhaust Both of the flows can be blown in the direction of the rotation axis to reduce the diameter and provide a simultaneous supply and discharge fan that has the effect of reducing the total heat energy loss.
[Brief description of the drawings]
1 is a perspective view of a supply / discharge simultaneous fan according to Embodiments 1 to 6 of the present invention. FIG. 2 is a sectional view of Embodiments 1 to 3. FIG. 3 is a sectional view of an impeller according to Embodiment 1. ] Cross-sectional view of impeller of Example 2 [FIG. 5] Cross-sectional view of impeller of Example 3 [FIG. 6] Cross-sectional view of Example 4 [FIG. 7] Cross-sectional view of conventional simultaneous fan [ Fig. 8 Cross section of the same simultaneous supply / discharge fan [Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Main body case 2 Electric motor 3 Blade 4 Hub 5 Impeller 6 Louver 7 Cavity entrance 8 Cavity exit 9 Rotating shaft 10 Straight line 11 Radiation 12 Separation part 13 Capillary fiber

Claims (6)

An electric motor and an impeller having a hub with a fixed lube blade to rotate by the electric motor and the rotary shaft, with holder Kutofan that having a body case to the outer periphery of the impeller, the interior of the blade is formed in the cavity, the before the blade the rotational axis direction of the indoor air from the cavity of the indoor-side end is sucked into the main body case outer circumferential side or we exhaust is Ru exhaust ventilation passage of the cavity of the outdoor-side end portion of the rotation axis direction of the blade An air supply ventilation path through which outdoor air is sucked from the inlet of the cavity at the radial end of the blade on the center side of the hub and is supplied from the outlet of the outer peripheral cavity at the circumferential end of the blade. The blades of the exhaust ventilation path and the blades of the air supply ventilation path are alternately provided , and outdoor air is sucked so as not to mix with dirty air and passes through the air supply ventilation path from the outer periphery of the main body case. Air supply to the room Supply and discharge simultaneous fan that.   The supply / exhaust according to claim 1, wherein the straight line connecting the cavity inlet and the cavity outlet has a cross section perpendicular to the rotation axis of the impeller and is inclined backward in the rotation direction from the radiation connecting the axis center and the cavity inlet. Simultaneous fan.   The simultaneous supply and discharge fan according to claim 1 or 2, wherein a line segment forming the blade is an arc or a curve in a cross section perpendicular to the rotation axis of the impeller.   The simultaneous supply / exhaust fan according to claim 1, 2 or 3, wherein the exhaust suction part, the supply / discharge part, the exhaust discharge part, and the supply / suction part are attached to the separation part for separating the rotating body and the stationary part, respectively.   The simultaneous supply / exhaust fan according to claim 1, wherein the blade is made of aluminum or resin, and sensible heat exchange is performed between the supply air flow and the exhaust flow.   5. The simultaneous supply / discharge fan according to claim 1, wherein the blade is made of paper or film, and sensible heat and latent heat are exchanged between the supply air flow and the exhaust flow.

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