JP2008185304A - Adapter for blower - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a blower adapter capable of controlling the whole air capacity of a ventilating device without being influenced by the pressure loss of a duct and a terminal member connected thereto. <P>SOLUTION: The blower adapter can be provided by providing a body formed in box shape, with an opening connectable to an exhaust adapter 13 provided at a ventilating unit 12; another opening to which the duct 17 is connectable; a detection hole 19 for detecting the pressure of an internal air course, in the side part; and a pressure sensor 20 for detecting the internal pressure of the adapter through the detection hole 19. The pressure value of a fluid passing through the inside of the adapter is output, and the air capacity is computed based on the pressure value to control the air capacity of the blower device. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a fan adapter with an air volume correction function that corrects an air volume that fluctuates due to pressure loss generated in a duct connected to a ventilator and a terminal member, and always detects and outputs information that can be controlled to a target air volume. About.

  Conventionally, as a ventilator having this type of air volume correction function, one that corrects the air volume using a pressure sensor is known.

  Hereinafter, a ventilation device having an air volume correction function using a pressure sensor will be described with reference to FIG.

  As shown in the figure, a box-shaped main body 101 is composed of a single exhaust adapter 102 for exhaust, and a blower device incorporating a plurality of suction adapters 103, 104, 105 and a blower 106 for supplying air. Each suction adapter 103, 104, 105 is attached to each side surface in the three directions of the box-shaped main body 101, and communicates with each zone of the residence through the duct 107. The exhaust adapter 102 is attached to the side surface of the main body 101 where the suction adapters 103, 104, and 105 are not attached, and communicates with the outside via the duct 107. The outer surfaces of the suction adapters 103, 104, and 105 have a vertical surface structure, and the control box 108 is attached to one attachment surface of the suction adapters 103, 104, and 105. Inside the control box 108, a pressure sensor 109 that detects the pressure difference between the upstream side and the downstream side of the intake air passage, and the pressure difference detected by the pressure sensor 109 matches a preset target value. A control circuit 110 for controlling the blower 106 is incorporated in the main body.

For example, when attached to the suction adapter 103, the relationship between the air volume passing through the suction adapter 103 and the pressure difference is correlated, and a pressure difference corresponding to the air volume passing through appears, and the pressure sensor 109 detects the air volume flowing through the suction adapter 103. It becomes a means to detect. Using these means, the output of the pressure sensor 109 corresponding to the amount of air flowing through the suction adapter 103 is input to the control circuit 110, and the control circuit 110 compares the output with a preset target value to control the fan 106. Then, the pressure loss air volume generated in a duct connected to the main body 101 is corrected to be constant (see, for example, Patent Document 1).
JP-A-8-261526

  In a ventilator having such a conventional air volume correction function, the air volume passing through the suction adapter to which the pressure sensor is attached is detected by the pressure sensor while being affected by the pressure loss of the connected duct and terminal member. Although the air volume can be controlled to a predetermined value by controlling the blower, the air volume in other suction adapters that do not have a pressure sensor in the main body is the value of the event because the blower is controlled by the pressure sensor. It becomes. Therefore, although the resistance is adjusted inside one suction adapter, the air volume is greatly affected by the pressure loss of each connected duct and terminal member, and there is a problem that a predetermined air volume cannot be output from the duct.

  The present invention solves such a conventional problem, and is an air blower capable of controlling the air volume of the entire ventilator to a predetermined constant without being affected by pressure loss of a duct or a terminal member to be connected. An object is to provide an adapter.

  In order to achieve the above object, the air blower adapter of the present invention has a box-shaped main body, a ventilation opening through which a duct or air blower can be connected to the side, and at least one other side. It has an opening part which can connect and connect a duct, and has a pressure detection means which detects the pressure of the fluid which passes through the inside of the duct connected to the opening part.

  The other means detects the pressure on the upstream side and the downstream side of the fluid passing through the inside of the duct connected to the opening.

  Another means is that a nozzle-shaped portion is formed between the upstream side and the downstream side of the fluid passing through the inside of the duct connected to the opening.

  The other means uses a differential pressure sensor as the pressure detection means.

  Another means is to integrally form a differential pressure sensor holding portion on the side portion of the main body.

  The other means has a detection hole that matches the detection part of the differential pressure sensor.

  Another means is that a bottom surface is inclined from the opening on the side of the main body to the other opening.

  In another means, the nozzle portion between the upstream side and the downstream side of the fluid passing through the inside of the duct connected to the opening can be replaced with another shape.

  Another means is that a shutter that opens and closes by wind pressure is attached to the tip of the ventilation opening.

  Another means is that the ventilation opening which can connect the duct or the blower to the side is an opening having a different diameter.

  According to the present invention, the box-shaped body has a ventilation opening that can connect and connect a duct or a blower to the side, and an opening that can connect and connect at least one duct to the other side, By having pressure detection means for detecting the pressure of the fluid passing through the inside of the duct connected to the opening, the pressure value of the fluid passing through the adapter is output, and the control device provided in the blower is An air blower adapter having an effect of being able to calculate the air flow based on the pressure value and control the air flow of the blower can be provided.

  Further, the pressure detecting means detects the pressure on the upstream side and the downstream side of the fluid passing through the inside of the duct connected to the opening, thereby enabling the flow rate flowing inside the adapter to be calculated more accurately. An adapter for a blower can be provided.

  In addition, since the nozzle shape portion is formed between the upstream side and the downstream side of the fluid passing through the inside of the duct connected to the opening, the shape of the nozzle is set between the two pressure detection positions on the upstream side and the downstream side. Since the pressure difference between the upstream side and the downstream side becomes large, it is possible to provide an adapter for a blower device that can perform more accurate air volume control.

  In addition, since the differential pressure sensor is used as the pressure detection means, the differential pressure is always output, so the cause of the error is eliminated since the calculation of the two pressure parameters is eliminated. High air flow control can be performed. Moreover, since the function is satisfied with one component, the number of components can be reduced and the adapter for the blower can be provided with the effect that the cost can be reduced.

  In addition, by forming the differential pressure sensor holding part integrally on the side part of the main body and forming the shape for holding the differential pressure sensor on the adapter part, the number of parts can be reduced and the cost can be reduced. An air blower adapter can be provided.

  In addition, by having a detection hole that matches the detection part of the differential pressure sensor, there is no need for a tube that connects the differential pressure sensor and the adapter body. It is possible to provide an adapter for an air blower that can reduce the number of points and reduce the cost.

  In addition, by forming a slope on the bottom part from the opening on the side of the main body to the other opening, the condensed water accumulated in the adapter passes through the duct on the side opposite to the blower, and the water is discharged. It is possible to provide an adapter for a blower that has an effect of eliminating the leakage of condensed water from the main body.

  In addition, the nozzle portion between the upstream side and the downstream side of the fluid passing through the inside of the duct connected to the opening can be replaced with another shape so that the nozzle shape can be changed to an optimum nozzle shape according to the air volume. Thus, it is possible to provide an adapter for a blower that is capable of performing air flow control with higher accuracy.

  In addition, by installing a shutter that opens and closes by the wind pressure at the tip of the ventilation opening, even when outside wind generated from the outside enters the duct, the shutter attached to the tip of the adapter prevents outside air from entering. It is possible to provide an adapter for an air blower having an effect that it can be used.

  In addition, the ventilation opening that can connect and connect the duct or blower to the side is an opening with a different diameter, so if one of the adapters has a small diameter, it is easy to penetrate the beam in the building. As a result, it is possible to provide an adapter for an air blower that has an effect of increasing the air volume of the air blower because resistance in the duct is lowered by making one of the large diameters on the contrary. .

  The adapter for a blower device according to claim 1 of the present invention is connected to a box-shaped main body, a ventilation opening capable of connecting and connecting a duct or a blower to the side, and at least one duct to the other side. It has an opening that can be connected, and has pressure detection means for detecting the pressure of the fluid passing through the inside of the duct connected to the opening, and is attached to the exhaust side or the suction side of the device, or blows air By attaching the adapter in the middle of the duct, the pressure value of the fluid passing through the adapter is detected.

  Further, the pressure detection means detects the pressure on the upstream side and the downstream side of the fluid passing through the inside of the duct connected to the opening, and is attached to the exhaust side or the suction side of the blower, or the blower duct By attaching the adapter in the middle, there is an action of detecting two pressure values on the upstream side and the downstream side of the passing fluid inside the adapter.

  Further, a nozzle-shaped portion is formed between the upstream side and the downstream side of the fluid passing through the inside of the duct connected to the opening, and two pressure detection positions on the upstream side and the downstream side of the passing fluid inside the adapter. By forming the nozzle portion between the two, the difference between the upstream pressure value and the downstream pressure value is increased, and the fluid is rectified by the shape of the nozzle.

  The pressure detection means uses a differential pressure sensor, and the differential pressure sensor is used as a means for detecting two pressures upstream and downstream of the fluid passing through the adapter. It has the effect | action of detecting.

  Also, the differential pressure sensor holding part is integrally formed on the side part of the main body, and the shape that holds the differential pressure sensor is formed on the adapter part, so that the part that holds the sensor becomes unnecessary. Have.

  Also, it has a detection hole that matches the detection part of the differential pressure sensor, and a detection hole for detecting the pressure by the differential pressure sensor is formed in the adapter part, so that a tube etc. that connects the differential pressure sensor and the adapter body is unnecessary It has the effect of becoming.

  In addition, an inclination is formed on the bottom surface from the opening on the side of the main body to the other opening, an inclination is formed on the bottom surface of the adapter, and a through hole is provided in the nozzle portion in accordance with the inclination. It has the effect of flowing the accumulated water along the slope.

  In addition, the nozzle part between the upstream side and the downstream side of the fluid passing through the inside of the duct connected to the opening can be replaced with another shape, and the nozzle inside the adapter can be attached and detached, Accordingly, the nozzles are replaced with different nozzles.

  In addition, a shutter that opens and closes by wind pressure is attached to the tip of the ventilation opening, and a shutter that opens by wind pressure is attached to the tip of the adapter, and has the effect of blocking the movement of fluid inside the adapter when the blower is stopped.

  In addition, the ventilation opening that can connect and connect the duct or the air blower to the side is an opening having a different diameter, and the adapter tip is formed into an opening having a different diameter and the duct having a different diameter is connected. Have

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1)
As shown in FIGS. 1 to 3, a device body 3 for forming a sauna device is provided in a ceiling space 2 of a sauna target room 1 made of a bathroom or the like, and an opening 4 provided on the lower surface of the device body 3 is a ceiling opening. It leads to the sauna target room 1 through the part 5. The installation and fixing of the apparatus main body 3 is fixed from the sauna target chamber 1 with screws and suspended from a hanging metal fitting 6 formed on the apparatus main body 3 and fixed with bolts 7. Further, inside the apparatus main body 3, a fan unit part (not shown) for circulating air in the sauna target room 1, a heating unit part (not shown) for raising the temperature of the space, and a humidity unit for raising the humidity in the space A humidifying unit (not shown) is configured. A decorative panel 8 is attached so as to cover the opening 4 and the ceiling opening 5 of the apparatus body 3. The decorative panel 8 has a decorative panel opening 9 serving as a route for circulation and ventilation air passages, and a filter 10 is attached to the decorative panel opening 9.

  In addition, a ventilation opening 11 serving as a ventilation path is provided on one side surface of the apparatus body 3, and a ventilation unit 12 is attached so as to cover and close the ventilation opening 11. The ventilation unit 12 is formed in a box shape, and an exhaust adapter 13 for exhausting is attached to one surface, and two suction adapters 14 and 15 for suction are attached to the opposite surface. Also, it is composed of a blower device incorporating a blower 16 equipped with a DC fan motor that ventilates from the two suction adapters 14 and 15 side, the ventilation opening 11, the opening 4, and the decorative panel opening 9 to the exhaust adapter 13. ing. The tips of the suction adapters 14 and 15 of the ventilation unit 12 communicate with the respective zones of the toilet and the dressing room through the ducts 17 respectively.

  In addition, a blower adapter 18 that is formed in a cylindrical shape at the tip of the exhaust adapter 13 and has an air passage configuration is connected to the inside thereof. A detection hole 19 for detecting the pressure of the internal air passage is provided at a side portion of the air blower adapter 18, and the pressure sensor 20 for detecting the pressure inside the adapter through the detection hole 19 is ventilated. Installed on the side of the unit 12. Further, a duct 17 is connected and communicated outdoors.

  Further, a control means 21 for controlling the operations of the apparatus main body 3 and the ventilation unit 12 is mounted inside the apparatus main body 3 so that the output of the pressure sensor 20 is also detected. And the relationship between the pressure value detected by the pressure sensor 20 when the amount of air passing through the inside of the blower adapter 18 is fixed and the rotational speed of the DC fan motor of the blower 16 are correlated, and measured in advance with the above configuration. By making the data into a data table in the control means 21, a constant air flow operation is performed from detection of the pressure value of the pressure sensor 20, detection of the rotational speed of the DC fan motor, and control of operation.

  For example, when the interior of the bathroom after sauna operation or 24-hour ventilation of the entire house is performed by this apparatus, air is sucked from the suction adapters 14 and 15 by the operation of the blower 16 inside the ventilation unit 12 and from the dressing room. The air in the bathroom is sucked through the ventilation opening 11, the opening 4, and the decorative panel opening 9, and is released to the outside through the exhaust adapter 13 and the blower adapter 18. Here, as resistance applied to the ventilation unit 12, duct resistance, terminal member resistance, and resistance generated by disturbance such as outside wind can be considered, and generally the increase or decrease of the air volume occurs due to these influences. By controlling the DC fan motor of the blower 16 so as to match any of the data tables input in advance by the means 21, ventilation with a constant air volume can be performed at all times.

(Embodiment 2)
As shown in FIGS. 4 and 5, two portions of an upstream detection hole 23 and a downstream detection hole 24 are provided on the side of the air blower adapter 22 in order to detect the pressure of the internal air path. The two detection holes are formed at a pitch at which the two protrusions of the differential pressure sensor 25 are inserted. Further, a rib 26 is formed on the air blower adapter 22 in accordance with the shape of the differential pressure sensor 25 in order to eliminate the need for another mounting part, and the detection hole and the rib 26 of the upstream detection hole 23 and the downstream detection hole 24 The differential pressure sensor 25 is held. Next, in order to clarify the pressure difference between the upstream detection hole 23 and the downstream detection hole 24 near the center of the blower adapter 22, a nozzle portion is provided between the upstream detection hole 23 and the downstream detection hole 24. 27 is formed. Further, a shutter 28 that can be opened and closed by a wind made of resin or the like is provided at the tip of the blower adapter 22. Further, as shown in the drawing, the bottom portion of the blower adapter 22 has a shape with a certain downward slope 29 in the direction from the blower mounting portion toward the duct connection portion. Here, in the vicinity of the downward slope 29 of the nozzle portion 27 provided in the center portion of the adapter, a through hole 30 is provided in a part of the nozzle so that the slope continuously continues, and the slope in the adapter is inclined from the end face. A continuous slope is provided to the end face.

  The installation method is connected to the blower adapter 22 and the exhaust adapter of the ventilation unit, and the other is connected to the outside through the duct 17. Further, a control means is mounted inside the apparatus main body so as to detect the output of the differential pressure sensor. In such a configuration, there is a correlation between the air volume passing through the blower adapter 22 and the differential pressure value calculated from the upstream detection hole 23 and the downstream detection hole 24, and the differential pressure value corresponding to the passing air volume. Will occur. By converting the relationship between the differential pressure value and the air volume into the control means in advance, the constant air volume operation can be performed from the control of the operation of the DC fan motor.

  In the above configuration, when the ventilation operation is performed, the DC fan motor is operated so as to meet the differential pressure value corresponding to the air volume regardless of the resistance applied to the ventilation unit, and the ventilation of the constant air volume is always performed. Further, during operation, the shutter 28 attached to the tip of the air blower adapter 22 can reduce the influence of the outside wind that has entered through the duct from the outside, thereby enabling more stable air volume control. Even in the positional relationship of the two detections with the nozzle part 27 at the center of the duct, a pressure difference is easily generated by disposing the downstream detection hole 24 at the back of the round part 31 of the nozzle as shown in FIG. However, the stability of air volume control is increased.

  Furthermore, as an effect of the shutter 28, intrusion of outside air is prevented when the ventilation operation is stopped, so that it is possible to suppress cold draft feeling during bathing and performance deterioration during sauna operation.

  Moreover, when the dew condensation water generated from the humid air in the bathroom accumulates in the air blower adapter 22, all the dew condensation flows out in the outdoor direction because the bottom surface has a certain downward slope 29 in the direction toward the duct connection part. As a result, the problem of leakage of condensed water from the adapter joint is solved.

(Embodiment 3)
As shown in FIGS. 6 to 8, the blower adapter 32 is divided into a base portion 33, a nozzle portion 34, and a tip portion 35 of the adapter. The shape of the nozzle part 34 is usually determined from the air volume that passes through the nozzle, the opening area of the nozzle part 34, and the round part of the nozzle part 34. If an air volume that does not match the nozzle shape passes, there is an error in the pressure difference. It tends to occur. Since the nozzle unit 34 can be attached to and detached from the air blower adapter 32, the shape of the nozzle unit 34 can be changed to an appropriate shape according to the amount of air used, so that more stable air volume control is possible.

  Further, by changing the adapter tip 35 to a small-diameter adapter 36 whose tip is thin as shown in FIG. 7 or FIG. 8 and a large-diameter adapter 37 whose tip is large, the former penetrates the beam inside the building. This makes it possible to achieve saving work such as facilitating and lightening, and the latter makes it possible to increase the ventilation air volume.

  By attaching the air blower adapter of the present invention to various ventilation air blowers, the constant air flow rate can be controlled easily.

The block diagram which shows the apparatus carrying the adapter for air blowers of Embodiment 1 of this invention A perspective view showing a device equipped with the air blower adapter A perspective view showing a ventilation unit equipped with the air blower adapter The perspective view which shows the detail of the adapter for air blowers of Embodiment 2 of this invention Sectional drawing showing the adapter for the blower The exploded view which shows the detail of the adapter for air blowers of Embodiment 3 of this invention The perspective view which shows the front-end | tip of the adapter for the air blower The perspective view which shows the front-end | tip of the adapter for the air blower Configuration diagram showing a conventional ventilation device with air flow compensation

Explanation of symbols

13 Exhaust Adapter 17 Duct 18 Blower Adapter 19 Detection Hole 21 Control Unit 22 Blower Adapter 23 Upstream Detection Hole 24 Downstream Detection Hole 25 Differential Pressure Sensor 26 Rib 27 Nozzle 28 Shutter 29 Downward Inclination 30 Through Hole 31 Round Part 32 Adapter for blower 34 Nozzle part 36 Small diameter adapter 37 Large diameter adapter

Claims (10)

The box-shaped main body has a ventilation opening that can connect and connect a duct or a blower to the side, and an opening that can connect and connect at least one duct to the other side, and is connected to the opening. An air blower adapter comprising pressure detecting means for detecting the pressure of the fluid passing through the inside of the duct. 2. The air blower adapter according to claim 1, wherein the pressure detecting means detects the pressure on the upstream side and the downstream side of the fluid passing through the inside of the duct connected to the opening. The air blower adapter according to claim 1 or 2, wherein a nozzle-shaped portion is formed between an upstream side and a downstream side of the fluid passing through the inside of the duct connected to the opening. The blower adapter according to any one of claims 1 to 3, wherein a differential pressure sensor is used as the pressure detection means. 5. The air blower adapter according to claim 1, wherein a differential pressure sensor holding portion is integrally formed on a side portion of the main body. 6. The blower adapter according to claim 1, further comprising a detection hole that matches a detection portion of the differential pressure sensor. The blower adapter according to claim 1, wherein an inclination is formed on the bottom surface from the opening on the side of the main body to the other opening. 4. The air blower adapter according to claim 3, wherein the nozzle portion between the upstream side and the downstream side of the fluid passing through the inside of the duct connected to the opening can be replaced with another shape. The air blower adapter according to any one of claims 1 to 8, wherein a shutter that opens and closes by a wind pressure is attached to a tip of the ventilation opening. The air blower adapter according to any one of claims 1 to 9, wherein the ventilation opening that can connect and connect the duct or the air blower to the side is an opening having a different diameter.

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