JP4305255B2 - Simultaneous exhaust / exhaust fan - Google Patents

Description

  The present invention relates to a simultaneous supply / exhaust ventilation fan that exhausts indoor air and simultaneously supplies outdoor air.

  Conventionally, as an example of this type of simultaneous supply / exhaust type ventilation fan, a simultaneous supply / exhaust type ceiling-embedded ventilation fan in which the exhaust passage and the supply passage are not short-circuited is known (for example, see Patent Document 1).

  Hereinafter, the simultaneous supply / discharge type ceiling embedded ventilation fan will be described with reference to FIG.

As shown in the figure, the outdoor exhaust port 103 of the exhaust passage 102 of the simultaneous supply / exhaust ceiling-embedded ventilation fan body 101 and the outdoor air supply port 105 of the supply passage 104 are provided so as to protrude from the main body 101, as a whole. A substantially cylindrical shape is formed. The outdoor exhaust port 103 and the outdoor air supply port 105 are fitted with a two-layer pipe (not shown) whose center is partitioned by a partition wall to communicate with the outside of the room, thereby introducing outside air and discharging indoor air. It is configured to do.
JP 56-119437 A (FIG. 1)

  In such a conventional simultaneous supply / exhaust ceiling-mounted ventilation fan, a double-layer pipe that supplies and exhausts air with a single pipe is used as a duct for connecting the outdoor unit and the main unit. Since the sleeve and the two-layer pipe are connected together, the connection between the main body and the two-layer pipe is likely to be insufficient due to a slight shift in the installation position, and it is difficult to install so that air does not escape from the connection portion. There was a problem of being.

  Further, since the duct connection port on the main body side is provided with a draft angle (usually 1 to 2 °), the diameter of the end of the duct connection port is small and the diameter on the main body side is large. If the gap between the inner wall of the two-layer pipe and the outer wall of the duct connection port is increased, the inner diameter of the duct connection port becomes smaller, and there is a problem that the performance deterioration is increased due to pressure loss at the duct connection port. If there is no gap between the inner wall of the two-layer pipe and the outer wall of the duct connection port, it is difficult to join the duct connection port and the two-layer pipe, and air leakage from the connection portion becomes a problem when the joint is insufficient.

  In addition, because the double-layer pipe has a bulkhead in the center, the connection between the double-layer pipe and the simultaneous supply / exhaust ceiling-embedded ventilation fan body is insufficient unless it is constructed in an accurate posture in the circumferential direction of the double-layer pipe. Therefore, there was a problem that air leakage occurred.

  Also, because warm air and cold air pass through the central partition in the two-layer pipe, condensation tends to occur, and depending on the construction condition of the two-layer pipe, the dew condensation water flows into the simultaneous supply / exhaust ceiling embedded ventilation fan side There was a problem.

  The present invention solves such a conventional problem, and an object of the present invention is to provide a simultaneous supply / exhaust type ventilation fan that is easy to construct and has little air leakage.

  In order to achieve the above object, a simultaneous supply / exhaust ventilation fan according to the present invention has a main body provided with an exhaust fan and an air supply fan therein, and an exhaust ventilation communicating with each of the exhaust fan and the air supply fan. A duct connection part having a duct connection port provided in the main body with a sleeve partitioned into a passage and an air supply ventilation path, and having a duct connection port that is inserted and connected to a two-layer pipe whose ventilation part is divided by a central partition wall A heat insulating portion is provided on the outer periphery of the duct connecting portion, and a step portion is formed by the heat insulating portion and the duct connecting port.

  By this means, the level difference between the outer peripheral surface of the heat insulating portion provided in the duct connecting portion and the outer peripheral surface of the two-layer pipe can be reduced, so that the connecting portion between the two-layer pipe and the duct connection port is covered. The taping to be applied can be prevented from being broken or wrinkled, air leakage from the duct connection port can be reduced, and the duct connection part is insulated to prevent condensation at the duct connection part. A simultaneous supply / exhaust type exhaust fan is obtained.

  In addition, another means for achieving the above object includes: a main body provided with an exhaust fan and an air supply fan therein; an exhaust ventilation path communicating with each of the exhaust fan and the air supply fan; A duct connection part having a duct connection port that is provided in the main body with a sleeve that is partitioned into an air ventilation path, and in which a ventilation part is inserted and connected to a two-layer pipe partitioned by a central partition; The upper and lower portions of each sleeve are partly horizontal, and the whole is configured in a substantially cylindrical shape.

  By this means, it is possible to obtain a simultaneous supply / exhaust type ventilation fan that absorbs the vertical displacement between the two-layer pipe and the duct connection port that occurs in the construction and facilitates the connection between the two-layer pipe and the duct connection port.

  In addition, another means for achieving the above object includes: a main body provided with an exhaust fan and an air supply fan therein; an exhaust ventilation path communicating with each of the exhaust fan and the air supply fan; A duct connection part having a duct connection port that is provided in the main body with a sleeve that is partitioned into an air ventilation path, and in which a ventilation part is inserted and connected to a two-layer pipe partitioned by a central partition; The left and right sides of each sleeve are partly horizontal, and the whole is formed in a substantially cylindrical shape.

  By this means, it is possible to obtain a simultaneous supply / exhaust ventilation fan that absorbs the horizontal displacement between the two-layer pipe and the duct connection port that occurs in the construction and facilitates the connection between the two-layer pipe and the duct connection port.

  Further, another means for achieving the above object is to set the length from the step portion formed by the duct connection port and the heat insulating portion to the tip of the duct connection port within a range of 20 to 40 mm. It is composed of

  By this means, it is possible to obtain a simultaneous supply / exhaust type ventilation fan with less air leakage and easy installation without lowering the air volume.

  Another means for achieving the above object is to form an adjustment space having a width larger than the wall thickness of the partition wall of the two-layer pipe between the sleeves of the duct connection portion, and the adjustment space is at the center portion. The fan-shaped shape has a small width, and the central angle of the fan-shaped shape is an angle of 1 to 6 ° in the circumferential direction.

  By this means, it is possible to obtain a simultaneous supply / exhaust type ventilation fan with less air leakage and easy to install.

  Another means for achieving the above object is to form an adjustment space having a width larger than the wall thickness of the partition wall of the two-layer pipe between the sleeves of the duct connection portion, and the adjustment space is at the center portion. The fan-shaped shape has a small width, and the central angle of the fan-shaped shape is arranged so as to be symmetrically distributed at an angle of 1 to 3 °.

  By this means, it is possible to obtain a simultaneous supply / exhaust type ventilation fan with less air leakage and easy to install.

  Further, as another means for achieving the above object, a guide for guiding the insertion of the two-layer pipe is provided on each side wall of each sleeve defining the air supply passage and the exhaust passage of the duct connecting portion. Is.

  By this means, a simultaneous supply / exhaust ventilation fan that is easy to construct can be obtained.

  Another means for achieving the above object is to provide a rib for blocking dew condensation water at the lower part of the duct connection port on the exhaust side.

  By this means, a simultaneous supply / exhaust type ventilation fan is obtained in which the dew condensation water in the two-layer pipe is less likely to flow into the body side of the simultaneous supply / exhaust type ventilation fan.

  Further, another means for achieving the above object is to provide a packing between the sleeves forming the air supply passage and the exhaust passage of the duct connecting portion.

  By this means, a simultaneous supply / exhaust type exhaust fan is obtained in which there is little air leakage from the partition wall of the two-layer pipe, and mixing of supply air and exhaust air hardly occurs.

  Further, another means for achieving the above object is that a cylindrical heat insulating material is provided from a step portion formed by the duct connection port and the heat insulating portion to a tip of the duct connection port, and the two-layer pipe is connected to the duct. It is inserted and connected between the mouth and the tubular heat insulating material.

  By this means, a simultaneous supply / exhaust type ventilation fan with less air leakage from the connecting portion of the two-layer pipe can be obtained.

  Further, another means for achieving the above object is to provide a wall surface between the sleeves of the duct connection part for restricting movement in the ventilation direction of the two-layer pipe connected to the duct connection part, It arrange | positions according to the position of the ventilation | gas_flowing direction of the said level | step-difference part.

By this means, a simultaneous supply / exhaust type exhaust fan is obtained in which there is little air leakage from the connecting portion of the two-layer pipe, and mixing of supply air and exhaust air hardly occurs.

Further, as another means for achieving the above object, the length of the sleeve of the duct connecting portion is different between the supply side and the exhaust side.

  By this means, it is possible to obtain a simultaneous supply / exhaust ventilation fan in which the connection between the two-layer pipe and the duct connecting portion can be easily performed.

  Further, as another means for achieving the above object, the length of the sleeve of the duct connecting portion is such that the length of the sleeve on the exhaust side is longer than the length of the sleeve on the air supply side.

  By this means, a simultaneous supply / exhaust type exhaust fan is obtained in which air leakage from the exhaust side, which is positive pressure, is reduced at the connection between the two-layer pipe and the duct connection port.

  Another means for achieving the above object is to provide packing on the outer periphery of the exhaust sleeve.

  By this means, a simultaneous supply / exhaust type exhaust fan is obtained in which air leakage from the exhaust side, which is positive pressure, is reduced at the connection between the two-layer pipe and the duct connection port.

  The method of constructing the simultaneous supply / exhaust type ventilation fan according to the present invention includes a main body provided with an exhaust fan and an air supply fan therein, an exhaust ventilation path and an air supply ventilation communicating with the exhaust fan and the air supply fan, respectively. A duct connection part having a duct connection port provided in the main body with a sleeve partitioned into a road, and having a duct connection port that is inserted and connected to a two-layer pipe in which a ventilation part is divided by a central partition. In the simultaneous supply / exhaust ventilation fan in which a heat insulating part is provided on the outer periphery of the part and a stepped part is formed by the heat insulating part and the duct connection port, when connecting the duct connecting part and the two-layer pipe, The tip of the two-layer pipe is brought into contact with and fixed to the stepped portion.

  ADVANTAGE OF THE INVENTION According to this invention, it is easy to construct and can provide the simultaneous supply / exhaust type exhaust fan which can prevent the air leak in the connection part of a two-layer pipe and a duct connection part.

  In addition, it is possible to provide a simultaneous supply / exhaust ventilation fan that can prevent the condensed water generated in the two-layer pipe from flowing into the main body of the ventilation fan.

  The simultaneous supply / exhaust type ventilation fan according to claim 1, wherein a main body having an exhaust fan and an air supply fan provided therein, an exhaust air passage and an air supply air flow communicating with each of the exhaust fan and the air supply fan A duct connection part having a duct connection port provided in the main body with a sleeve partitioned into a road, and having a duct connection port that is inserted and connected to a two-layer pipe in which a ventilation part is divided by a central partition. A heat insulating part is provided on the outer periphery of the part, and a step part is formed by the heat insulating part and the duct connection port. The outer peripheral surface of the heat insulating part provided in the duct connecting part and two layers Since the level difference from the outer peripheral surface of the pipe can be reduced, it is possible to prevent the taping applied to cover the connection between the two-layer pipe and the duct connection port from being torn or wrinkled. Air leak from mouth Can be reduced, also, the hourly discharge type ventilating fan capable of preventing condensation in the duct connector can be obtained by insulating the duct connector.

  According to a second aspect of the present invention, there is provided a simultaneous supply / exhaust type ventilation fan having a main body provided with an exhaust fan and an air supply fan therein, an exhaust ventilation path communicating with the exhaust fan and the air supply fan, and a supply air A duct connection part having a duct connection port that is provided in the main body with a sleeve that is partitioned into an air ventilation path, and in which a ventilation part is inserted and connected to a two-layer pipe partitioned by a central partition; The upper and lower portions of each sleeve are partly formed horizontally, and the entire structure is substantially cylindrical. The vertical displacement between the two-layer pipe and the duct connection port that occurs during construction is absorbed. It has the effect of facilitating the connection between the layer pipe and the duct connection port.

  According to a third aspect of the present invention, there is provided a simultaneous supply / exhaust type ventilation fan having a main body provided with an exhaust fan and an air supply fan therein, an exhaust ventilation path communicating with each of the exhaust fan and the air supply fan, and an air supply. A duct connection part having a duct connection port that is provided in the main body with a sleeve that is partitioned into an air ventilation path, and in which a ventilation part is inserted and connected to a two-layer pipe partitioned by a central partition; The left and right sides of each sleeve are partly formed horizontally, and the whole is constructed in a substantially cylindrical shape, absorbing the horizontal displacement between the double-layer pipe and duct connection port that occurs during construction, and connecting the double-layer pipe and duct. It has an effect that the mouth can be easily connected.

  The simultaneous supply / exhaust ventilation fan according to claim 4 is configured such that a length from a step portion formed by the duct connection port and the heat insulating portion to a tip of the duct connection port is in a range of 20 to 40 mm. It is characterized in that it has the function of preventing airflow from being reduced, causing less air leakage and being easy to install.

  In the simultaneous supply / exhaust type ventilation fan according to claim 5, an adjustment space having a width wider than the wall thickness of the partition wall of the two-layer pipe is formed between the sleeves of the duct connection portion, and the adjustment space is at the center portion. The fan-shaped shape is a small width, and the central angle of the fan-shaped shape is an angle of 1 to 6 ° in the circumferential direction, and has the effect of less air leakage and easy construction. .

  In the simultaneous supply / exhaust type ventilation fan according to claim 6, an adjustment space having a width wider than the wall thickness of the partition wall of the two-layer pipe is formed between the sleeves of the duct connection portion, and the adjustment space is at the center portion. The fan-shaped shape has a small width, and the central angle of the fan-shaped shape is configured to be distributed symmetrically at an angle of 1 to 3 °, and has an effect that air leakage is small and construction is easy. .

  The simultaneous supply / exhaust type ventilation fan according to claim 7 is provided with guides for guiding the insertion of the two-layer pipes on the respective side walls of the sleeves defining the air supply and exhaust ventilation paths of the duct connection portion. It has a function of being easy to construct.

  The simultaneous supply / exhaust type ventilation fan according to claim 8 is provided with a rib for blocking dew condensation water at the lower part of the exhaust side of the duct connection port, and the dew condensation water in the two-layer pipe is simultaneously supplied / discharged. It has the effect that it becomes difficult to flow into the main body side of the shape ventilation fan.

  The simultaneous supply / exhaust type ventilation fan according to claim 9 is provided with a packing between the sleeves forming the air supply passage and the exhaust passage of the duct connection portion, There is little air leakage and it has the effect that mixing of supply air and exhaust air hardly occurs.

  The simultaneous supply / exhaust type ventilation fan according to claim 10, wherein a cylindrical heat insulating material is provided from a step portion formed by the duct connection port and the heat insulating portion to a tip of the duct connection port, and the two-layer pipe is connected to the duct. It is inserted and connected between the mouth and the cylindrical heat insulating material, and has an effect of reducing air leakage from the connecting portion between the duct connecting portion and the two-layer pipe.

  Moreover, the simultaneous supply / exhaust type ventilation fan according to claim 11 is provided with a wall surface between the sleeves of the duct connection portion to restrict movement in the ventilation direction of the two-layer pipe connected to the duct connection portion, The step portion is disposed so as to match the position in the ventilation direction, and has the effect of reducing air leakage from the connection portion with the two-layer pipe and reducing the mixing of supply air and exhaust air. .

  Further, in the simultaneous supply / exhaust type ventilation fan according to claim 12, the length of the sleeve of the duct connecting portion is different on the air supply side and the exhaust side, and it is easy to connect the two-layer pipe and the duct connection port. It has the action.

  Further, in the simultaneous supply / exhaust type ventilation fan according to claim 13, the length of the sleeve of the duct connecting portion is longer than the length of the sleeve on the supply side, and the double-layer pipe and the duct It has the effect of reducing air leakage from the exhaust side that is positive pressure at the connection portion of the connection port.

  The simultaneous supply / exhaust type ventilation fan according to claim 14 is provided with packing on the outer periphery of the exhaust side sleeve, and air from the exhaust side that becomes positive pressure at the connection portion between the two-layer pipe and the duct connection port. It has the effect of reducing leakage.

  The method for constructing a simultaneous supply / exhaust type ventilation fan according to claim 15 includes: a main body provided with an exhaust fan and an air supply fan therein; and an exhaust ventilation path communicating with each of the exhaust fan and the air supply fan. And a duct connecting portion provided in the main body having a sleeve partitioned into an air supply ventilation path and having a duct connecting port inserted and connected to a two-layer pipe partitioned by a partition wall at the center. In the simultaneous supply / exhaust ventilation fan in which a heat insulating portion is provided on the outer periphery of the duct connecting portion and a step portion is formed by the heat insulating portion and the duct connecting port, the duct connecting portion and the two-layer pipe are connected to each other. In some cases, the tip of the two-layer pipe is brought into contact with the stepped portion to be connected and fixed, and air leakage at the connecting portion between the two-layer pipe and the duct connection port can be prevented.

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

(Embodiment 1)
As shown in FIG. 1, the simultaneous supply / exhaust ventilation fan of the present invention communicates with a main body 4 provided with an exhaust fan 2 and an air supply fan 3 therein, and an exhaust fan 2 and an air supply fan 3. A two-layer pipe 10 having sleeves divided into an exhaust ventilation path (not shown) and an air supply ventilation path (not shown) provided in the main body 4, and a ventilation portion divided by a central partition wall 9. And a duct connecting portion 27 having a duct connecting port 11 inserted and connected to the outer periphery, and a heat insulating material 12 constituting a heat insulating portion is provided on the outer periphery of the duct connecting portion 27, and a step is formed by the heat insulating portion and the duct connecting port 11. A part is formed.

  The heat insulating portion is attached so as to cover the outer periphery of the duct connecting portion 27 from the duct connecting port 11 side so as to form a stepped portion with the duct connecting port 11. The heat insulating part has an opening in which the duct connection port 11 is inscribed on one end side, and has a large opening inscribed in the duct connection part 27 on the other end side, and is formed of a foam material. The heat insulating portion formed of the foam material is fixed by covering the duct connecting portion 27 and screwing the heat insulating portion to the duct connecting portion 27. Moreover, since the heat insulation part is taped after extrapolating the two-layer pipe to the duct connection port 11, the tip part is formed in a cylindrical shape.

  Further, as shown in FIGS. 1 and 2, the exhaust fan 2 driven by the motor 1 and the supply fan 3 driven by the motor 1 are provided in the body 4 of the simultaneous supply / exhaust type ventilation fan as shown in FIGS. On the lower surface, an indoor air supply port 5 and an indoor exhaust port 6 are provided. Further, a duct connection portion 27 is provided on the side surface of the main body 4, and a duct connection side exhaust port 11 a that exhausts exhaust air to the outside of the duct connection port 11 of the duct connection portion 27 and a duct connection side air supply port that sucks outside air. 11b is formed, and the duct connection side exhaust port 11a and the duct connection side air supply port 11b each have the shape of a sleeve having a semicircular cross section, and form a cylindrical sleeve as a whole.

  A wall surface 28 is formed on the side of the main body 4 in the duct connection portion 27 so as to connect the sleeves forming the air supply and exhaust ventilation paths defined in the duct connection portion 27. When connecting the two-layer pipe 10 to the duct connection port 11, the partition wall 9 of the two-layer pipe 10 is inserted between the sleeves, and the distal end portion of the partition wall 9 is inserted deeply until it contacts the wall surface 28. The wall surface 28 is formed vertically across the duct connecting portion 27 so as to connect the sleeves at the same position in the longitudinal direction of the stepped portion formed by the heat insulating material 12 and the duct connecting port 11 and the duct connecting portion 27. .

  FIG. 3 shows a construction state where the simultaneous supply / exhaust ventilation fan of the present invention is housed in the back of the ceiling, and a duct communicating with the outside is connected to the duct connecting portion 27. The main body 4 of the simultaneous supply / exhaust type ventilation fan is fixed by using a ceiling edge or the like, and the main body 4 portion is housed and attached to the back of the ceiling. A double-layer pipe 10 is used for duct connection between the main body 4 of the simultaneous supply / exhaust type ventilation fan and the outdoor. The two-layer pipe 10 is cut according to the distance between the main body 4 and the outdoor hood 13 provided on the outer wall, and the two-layer pipe 10 is inserted into the duct connection port 11 of the duct connection portion 27 of the main body 4 attached to the ceiling. Taping 26 is performed between the outer peripheral surface of the end portion of the duct and the outer peripheral surface of the stepped portion forming the connection portion. The other end of the two-layer pipe 10 is coupled to the outdoor hood 13 and performs caulking or the like. Depending on the order of construction, the duct connection port 11 and the two-layer pipe 10 may be coupled after the two-layer pipe 10 and the outdoor hood 13 are attached first.

  The duct connection side exhaust port 11a, the indoor side exhaust port 6 and the exhaust fan 2 communicate with each other, and the duct connection side air supply port 11b, the indoor side air supply port 5 and the air supply fan 3 communicate with each other, and are independent of each other. An exhaust passage and an air supply passage are configured. When the duct connection portion 27 and the two-layer pipe 10 are connected, the duct connection-side exhaust port 11a and the duct connection-side air supply port 11b are interpolated and connected to the two-layer pipe 10 having the partition wall 9 at the center. It is inserted between the side exhaust port 11a and the duct connection side air supply port 11b. On the outer periphery of the duct connection port 11, a heat insulating material 12 that constitutes a heat insulating portion is attached so as to have a step portion with the duct connection port 11.

  Even if the heat insulating part is made of a heat insulating material such as urethane packing or glass wool in addition to the foamed material, the same effect can be obtained.

  Next, the operation of the simultaneous supply / exhaust type ventilation fan of the present invention will be described. When the simultaneous supply / exhaust type exhaust fan according to the present invention is operated, the exhaust fan 2 sucks indoor air into the indoor exhaust port 6 communicating with the exhaust port provided in the louver provided in the simultaneous supply / exhaust type exhaust fan. Through the exhaust casing, the exhaust ventilation passage of the duct connection portion 27, and the duct connection side exhaust port 11a in that order, and then exhausted through the exhaust side passage of the two-layer pipe 10 to the outside. On the other hand, outside air is sucked in by the air supply fan 3, and the air supply side passage of the two-layer pipe 10, the duct connection side air supply port 11 b, the air supply ventilation path in the duct connection portion 27, and the simultaneous supply / exhaust ventilation fan A filter (not shown) provided in the main body 4 passes through the air supply casing in the main body 4 in this order, and is supplied to the room in a direction along the ceiling surface from an indoor air supply port 5 provided in the main body. The

  In the above configuration, when connecting the two-layer pipe 10 communicating with the outside and the duct connection portion 27, the outer peripheral surface of the step portion formed by the heat insulation portion and the duct connection port 11 on the heat insulation portion side, and the two-layer pipe 10 Taping 26 is performed so as to connect both the outer peripheral surface and the outer peripheral surface. Since the step portion is formed by the heat insulating portion and the duct connection port 11, the step difference between the outer peripheral surface of the step portion and the heat insulating portion side and the outer peripheral surface of the two-layer pipe 10 can be reduced. 11 can be prevented from being broken or wrinkled so as to cover the connection portion with 11, and air leakage from the duct connection port 11 can be prevented, and the step portion can be connected to the duct. By forming the part 27 with the heat insulating material 12 that insulates, it is possible to prevent the occurrence of condensation, which is a problem peculiar to the simultaneous supply / exhaust ventilation fan when the cold air is sucked in as the outside air. Furthermore, when the outer diameter of the outer peripheral surface of the heat insulating portion side is formed so that the outer peripheral surface of the two-layer pipe 10 and the outer peripheral surface of the stepped portion on the heat insulating portion side are substantially the same surface, wrinkles and tears are generated in the taping. The effect of preventing the occurrence can be further expected, the taping work can be easily performed, and the effect of preventing air leakage is improved.

  Further, the length from the stepped portion to the tip of the duct connection port 11 is easier to process at a lower cost when manufactured, but the larger the joint surface, the more effective in preventing air leakage from the connecting portion. In order to provide a forming draft angle (usually 1 to 2 °), the longer the duct connection port 11 is, the smaller the opening area of the end portion is and the air volume is reduced. Even when the length to the tip of 11 was increased to about 40 mm, there was almost no decrease in the air volume. Furthermore, if the length from the stepped portion to the tip of the duct connection port 11 is shortened, the joint surface between the duct and the duct connection port is shortened, so that the allowable range of the duct length is reduced and the construction becomes difficult. Therefore, as for the length to the front-end | tip of a level | step-difference part and the duct connection port 11, 20-40 mm is desirable.

(Embodiment 2)
A second embodiment will be described with reference to FIG. 4 and FIG. The same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  The simultaneous supply / exhaust type ventilation fan of the second embodiment is configured so that the upper and lower portions of the sleeves constituting the supply air exhaust passage and the exhaust air passage are partially formed horizontally, and the whole is configured in a substantially cylindrical shape.

  As shown in FIG. 4, each of the cross sections has a semicircular duct connection side exhaust port 11 a and a duct connection side air supply port 11 b, and the duct connection port 11 is formed so as to have a flat portion a <b> 14. A duct connection port 11 is provided.

  In the above configuration, as shown in FIG. 5, when the simultaneous supply / exhaust ventilation fan is installed on the ceiling and the two-layer pipe 10 communicating with the outside is connected to the duct connection port 11, the two-layer pipe 10 descends to the outdoor side. It is desirable to construct it with a gradient. Thus, since the two-layer pipe 10 is constructed with a vertical displacement, the two-layer pipe 10 has a slight angle with respect to the duct connection port 11 when the duct connection port 11 is joined to the two-layer pipe 10. It becomes a state. Since the flat portions a14 are formed above and below the duct connection port 11, there is a slight angle so that the double-layer pipe 10 has a downward slope toward the outdoor side in the connection between the two-layer pipe 10 and the duct connection port 11. It becomes easy to connect in the state.

(Embodiment 3)
A third embodiment will be described with reference to FIGS. The same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  The simultaneous supply / exhaust type ventilation fan of the third embodiment is configured such that the left and right sides of each sleeve are partly horizontal, and the entire configuration is substantially cylindrical.

  As shown in FIG. 6, each section is composed of a duct connection side exhaust port 11 a and a duct connection side air supply port 11 b each having a semicircular sleeve shape, and the left and right sides of the duct connection port 11 having a substantially cylindrical shape as a whole. Has a duct connection port 11 formed to have a flat surface portion b15.

  In the above configuration, as shown in FIG. 7, when the simultaneous supply / exhaust ventilation fan is installed on the ceiling and the two-layer pipe 10 communicating with the outside is connected to the main body 4, the two-layer pipe 10 and the duct connection port 11 are in the ventilation direction. However, in practice, it may be difficult to perform such construction because it is affected by the structure of the building such as a beam. As shown in FIG. 7, when the two-layer pipe 10 is connected to the duct connection port 11 when it is constructed with a deviation in the horizontal direction, the two-layer pipe 10 is slightly inclined with respect to the duct connection port 11. It will be in the state with. And since it has the plane part b15 on the right and left of the duct connection port 11, even if the connection part of the two-layer pipe 10 and the duct connection port 11 has a little angle, it can connect easily.

(Embodiment 4)
A fourth embodiment will be described with reference to FIGS. The same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  In the simultaneous supply / exhaust ventilation fan of the fourth embodiment, as shown in FIG. 8, an adjustment space a <b> 16 having a width wider than the wall thickness of the partition wall 9 of the two-layer pipe 10 is formed between the sleeves of the duct connection portion 27. The adjustment space a <b> 16 has a fan-like shape having a minimum width at the center, and the central angle of the fan-like shape is 1 to 6 ° in the circumferential direction. An adjustment space a16 for accommodating the partition wall 9 of the two-layer pipe 10 is provided between the duct connection side exhaust port 11a and the duct connection side air supply port 11b. The shape of the adjustment space a16 has a minimum width at the center, and the outer space It has a fan-like shape that is wider toward the direction.

  In the above configuration, when the two-layer pipe 10 is connected to the duct connecting portion 27, the two-layer pipe 10 can be rotated in the circumferential direction from the perpendicular. Therefore, when constructing the two-layer pipe 10, the partition wall 9 is not parallel to the side surface 17 of the body 4 of the simultaneous supply / exhaust ventilation fan, but is angled in the circumferential direction of the two-layer pipe 10, Even if the partition wall 9 of the two-layer pipe 10 itself is inclined with an angle in the circumferential direction due to a manufacturing problem, the two-layer pipe 10 can be connected to the duct connecting portion 27.

  In FIG. 8, the adjustment space a <b> 16 is configured to have an angle of 1 to 6 ° counterclockwise with respect to the vertical line, but the same effect can be obtained even when configured to have an angle clockwise. It is what you play.

(Embodiment 5)
A fifth embodiment will be described with reference to FIG. The same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  In the simultaneous supply / exhaust ventilation fan of the fifth embodiment, as shown in FIG. 10, an adjustment space b <b> 18 having a width wider than the wall thickness of the partition wall 9 of the double-layer pipe 10 is formed between the sleeves of the duct connection portion 27. The adjustment space b18 has a fan-like shape having a minimum width at the center, and the center angle of the fan-like shape is arranged so as to be symmetrically distributed at an angle of 1 to 3 °. An adjustment space b18 for accommodating the partition wall 9 of the two-layer pipe 10 is provided between the duct connection side exhaust port 11a and the duct connection side air supply port 11b, and the shape of the adjustment space b18 has a minimum width at the center, It is the fan-shaped shape comprised wide toward the direction.

  In the above configuration, when the two-layer pipe 10 is connected to the duct connecting portion 27, the two-layer pipe 10 can be rotated at an angle of 1 to 3 degrees to the left and right in the circumferential direction with respect to the perpendicular shown in FIG. . Therefore, when the two-layer pipe 10 is constructed, even if the partition wall 9 of the two-layer pipe 10 is constructed in an inclined state rather than in a state parallel to the side surface 17 of the body 4 of the simultaneous supply / exhaust ventilation fan, 10 can be connected to the duct connection 27.

(Embodiment 6)
A sixth embodiment will be described with reference to FIG. The same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  As shown in FIG. 11, the simultaneous supply / exhaust ventilation fan of the sixth embodiment has a double-layer pipe 10 on each side wall of each sleeve that divides the air supply and exhaust ventilation paths of the duct connection portion 27. The guide 21 for guiding the insertion is provided. Guides 21 are provided at the tips of the side walls 20a and 20b of the sleeves constituting the adjustment space 19 between the duct connection side exhaust port 11a and the duct connection side air supply port 11b of the duct connection part 27, respectively.

  In the above configuration, when connecting the two-layer pipe 10 to the duct connecting portion 27, the partition wall 9 that divides the center of the two-layer pipe 10 is inserted between the guides 21 and pushed into the back side. The connection port 11 can be easily connected.

(Embodiment 7)
A seventh embodiment will be described with reference to FIG. The same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  As shown in FIG. 12, the simultaneous supply / exhaust type exhaust fan according to the seventh embodiment has a configuration in which a rib 22 for blocking dew condensation water is provided below the duct connection side exhaust port 11a.

  In the above configuration, when the simultaneous supply / exhaust ventilation fan is operated in the winter when the temperature difference between the room and the room is large, cold supply air from the outside and warm exhaust air from the room pass through the central partition wall 9 in the two-layer pipe 10. It will pass through at intervals, and condensation may occur on the exhaust side in the two-layer pipe 10 due to the temperature difference. Normally, the two-layer pipe 10 is constructed so as to have a downward slope on the outdoor side. However, if the indoor side (main body 4 side) is constructed low, the condensed water moves to the main body 4 side of the ventilation fan. The condensed water can be prevented from entering the main body 4 of the ventilation fan by the rib 22 provided at the lower part of the duct connection side exhaust port 11a.

(Embodiment 8)
An eighth embodiment will be described with reference to FIG. The same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  As shown in FIG. 13, the simultaneous supply / exhaust type ventilation fan of the eighth embodiment has a configuration in which a packing a <b> 23 is provided between the sleeves forming the air supply passage and the exhaust passage of the duct connection portion 27. That is, the packing a23 is disposed in the adjustment space 19 formed between the duct connection side exhaust port 11a and the duct connection side air supply port 11b, and the partition wall 9 of the two-layer pipe 10 is inserted into the adjustment space 19, and the two-layer pipe 10 To the wall surface 28 formed on the side of the body 4 between the sleeves so as to connect the sleeves forming the air supply passage and the exhaust passage of the duct connecting portion 27. It is set as the structure which contact | abuts the front-end | tip part of the layer pipe 10 via the packing 23a. Further, the wall surface 28 has a function of restricting the movement of the two-layer pipe 10 connected to the duct connection portion 27 in the ventilation direction, and the wall surface 28 is a step portion formed by the duct connection port 11 and the heat insulating portion. It is arranged together with the position in the ventilation direction.

  In the above configuration, since the partition wall 9 is in contact with the packing a23 at the connecting portion between the two-layer pipe 10 and the duct connecting portion 27, the exhaust path and the air supply path are reliably separated, and the exhaust path and the air supply path are separated. Inflow of air, so-called shortcuts can be prevented.

  Further, the wall surface 28 for restricting the movement in the ventilation direction of the two-layer pipe 10 connected to the duct connection portion 27 is arranged in accordance with the position in the ventilation direction of the step portion formed by the duct connection port 11 and the heat insulating portion. Since it was provided, there is little air leakage from the connection part of the duct connection part 27 and the two-layer pipe 10, and mixing of supply air and exhaust air can be reduced.

(Embodiment 9)
A ninth embodiment will be described with reference to FIG. The same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  As shown in FIG. 14, the simultaneous supply / exhaust ventilation fan of the ninth embodiment is provided with the tubular heat insulating material 24 from the step portion formed by the duct connection port 11 and the heat insulation portion to the tip of the duct connection port 11, The two-layer pipe 10 is inserted and connected between the duct connection port 11 and the tubular heat insulating material 24. A space is provided between the tubular heat insulating material 24 and the sleeve of the duct connecting portion 27 so as to accommodate the thickness of the tubular portion of the two-layer pipe 10.

  In the above configuration, the two-layer pipe 10 is inserted into the space between the sleeve and the cylindrical heat insulating material 24, and the entire connecting portion between the two-layer pipe 10 and the duct connecting portion 27 is covered with the cylindrical heat insulating material 24 and the heat insulating material 12. Therefore, the ventilation resistance in the gap between the two-layer pipe 10 and the duct connection port 11 is increased, and air leakage from the connection portion between the two-layer pipe 10 and the duct connection portion 27 can be prevented.

(Embodiment 10)
A tenth embodiment will be described with reference to FIG. The same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  As shown in FIG. 15, in the simultaneous supply / exhaust type ventilation fan of the tenth embodiment, the length of the sleeve of the duct connecting portion 27 is different between the supply side and the exhaust side. The length is configured to be longer than the length of the sleeve on the air supply side. Further, a packing b25 is attached to the tip end portion of the duct connection side exhaust port 11a which is a part of the exhaust side sleeve.

  In the above configuration, when connecting the two-layer pipe 10 to the duct connection port 11, the duct connection side exhaust port 11 a is first inserted into one ventilation portion of the two-layer pipe 10 and then further inserted to the other ventilation portion. Is connected to the duct connection side air supply port 11b.

  Thus, since the length of the sleeve of the duct connection portion 27 is different between the supply side and the exhaust side, the sleeve can be inserted into the ventilation portion of the two-layer pipe 10 one by one, so that the construction becomes easy. .

  Further, since the vicinity of the duct connection side exhaust port 11a on the exhaust side is immediately after the exhaust fan 2 in the exhaust ventilation path, it is a place where the pressure is more positive than the surrounding area and air leakage is most likely to occur. By configuring the sleeve to be longer than the length of the air supply side sleeve, it is possible to reduce air leakage, and by providing the packing b25 on the outer periphery of the exhaust side sleeve, Air leakage can be prevented.

(Embodiment 11)
The eleventh embodiment will be described with reference to FIG. The same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  In the eleventh embodiment, as shown in FIG. 16, a method of connecting the two-layer pipe 10 to the main body 4 of the simultaneous supply / exhaust ventilation fan is shown. The construction method for installing the main body 4 of the simultaneous supply / exhaust ventilation fan is performed as described in the first embodiment. When connecting the two-layer pipe 10 to the duct connection portion 27 of the simultaneous supply / exhaust ventilation fan, the indoor side end of the two-layer pipe 10 is a step formed by the duct connection port 11 of the duct connection portion 27 and the heat insulating material 12. Connect to abut the part. Then, the taping 26 is reliably performed so that no air leaks from the end of the connected two-layer pipe 10 and the outer periphery of the stepped portion of the duct connecting portion 27. Moreover, it is desirable that the double-layer pipe 10 is constructed so as to be inclined downward toward the outside of the room so that the dew condensation water generated in the double-layer pipe 10 does not flow into the main body 4 side of the simultaneous supply / exhaust ventilation fan.

  By the above construction method, it is possible to prevent air leakage from the connection portion between the simultaneous supply / exhaust ventilation fan and the two-layer pipe communicating with the outside.

  Further, by restricting the connection in the ventilation direction of the two-layer pipe 10 and aligning the wall surface 28 formed between the sleeves and the position of the stepped portion in the ventilation direction, the entire end portion of the two-layer pipe 10 is By contacting the stepped portion, air leakage from the duct connecting portion 27 and mixing of supply air and exhaust air can be prevented.

  Furthermore, as in the eighth embodiment, by attaching a packing between the sleeves, and aligning the stepped portion and the position of the packing in the ventilation direction, the entire end of the two-layer pipe 10 is in contact with the packing and the stepped portion. Furthermore, the effect of preventing air leakage can be enhanced, and the effect of preventing mixing of supply air and exhaust air can be enhanced.

  The structure of the duct connection part of the present invention is also useful when used in an air conditioner connected to a two-layer pipe.

Sectional drawing which shows the simultaneous supply / discharge type ventilation fan of Embodiment 1 of this invention Perspective view of the simultaneous supply / exhaust ventilation fan Sectional view showing the construction status of the same supply / exhaust ventilation fan The side view which shows the simultaneous supply / discharge type ventilation fan of Embodiment 2 of this invention Side view showing the connection construction state of the same supply / exhaust ventilation fan and double-layer pipe The side view which shows the simultaneous supply / exhaust type ventilation fan of Embodiment 3 of this invention Plan view showing the connection construction state of the same supply / exhaust ventilation fan and double-layer pipe The side view which shows the simultaneous supply / exhaust type ventilation fan of Embodiment 4 of this invention Front view showing the connection port of the two-layer pipe connected to the same supply / exhaust ventilation fan The side view which shows the simultaneous supply / exhaust type ventilation fan of Embodiment 5 of this invention The perspective view which shows the simultaneous supply / discharge type ventilation fan of Embodiment 6 of this invention The perspective view which shows the simultaneous supply / discharge type ventilation fan of Embodiment 7 of this invention The side view which shows the simultaneous supply / exhaust type ventilation fan of Embodiment 8 of this invention The perspective view which shows the simultaneous supply / discharge type ventilation fan of Embodiment 9 of this invention The perspective view which shows the simultaneous supply / discharge type ventilation fan of Embodiment 10 of this invention. Sectional drawing showing the construction method of the simultaneous supply / exhaust type ventilation fan of Embodiment 11 of this invention Sectional view of a conventional simultaneous supply / discharge ceiling embedded ventilation fan

Explanation of symbols

DESCRIPTION OF SYMBOLS 2 Exhaust fan 3 Air supply fan 4 Main body 9 Bulkhead 10 Two-layer pipe 11 Duct connection port 11a Duct connection side exhaust port 11b Duct connection side air supply port 12 Heat insulating material 14 Plane part a
15 Plane part b
16 Adjustment space a
18 Adjustment space b
19 adjustment space 20a side wall 20b side wall 21 guide 22 rib 23 packing a
24 Cylindrical insulation 25 Packing b
26 Taping 27 Duct connection 28 Wall surface

Claims (15)

A main body provided with an exhaust fan and an air supply fan; and an exhaust air passage that communicates with each of the exhaust fan and the air supply fan; and a sleeve that is partitioned into the air supply air passage. A duct connection part having a duct connection port that is inserted and connected to a two-layer pipe divided by a central partition wall, and a heat insulating part is provided on the outer periphery of the duct connection part, The simultaneous supply / exhaust ventilation fan, wherein a step portion is formed by a heat insulating portion and the duct connection port. A main body provided with an exhaust fan and an air supply fan; and an exhaust air passage that communicates with each of the exhaust fan and the air supply fan; and a sleeve that is partitioned into the air supply air passage. And a duct connection part having a duct connection port that is inserted and connected to a two-layer pipe divided by a central partition wall, and the upper and lower portions of each sleeve are partially formed horizontally, A simultaneous supply / exhaust ventilation fan characterized by comprising a substantially cylindrical shape. A main body provided with an exhaust fan and an air supply fan; and an exhaust air passage that communicates with each of the exhaust fan and the air supply fan; and a sleeve that is partitioned into the air supply air passage. And a duct connection part having a duct connection port that is inserted and connected to a two-layer pipe divided by a central partition wall, and the left and right of each sleeve are partially formed horizontally, A simultaneous supply / exhaust ventilation fan characterized by comprising a substantially cylindrical shape. 2. The simultaneous operation according to claim 1, wherein a length from a step portion formed by the duct connection port and the heat insulating portion to a tip of the duct connection port is in a range of 20 to 40 mm. Supply / exhaust ventilation fan. An adjustment space having a width wider than the wall thickness of the partition wall of the two-layer pipe is formed between the sleeves of the duct connection portion, and the adjustment space has a fan-like shape having a minimum width in the center portion, and the center of the fan-like shape The simultaneous supply / exhaust ventilation fan according to any one of claims 1 to 3, wherein the angle is an angle of 1 to 6 degrees in a circumferential direction. An adjustment space having a width wider than the wall thickness of the partition wall of the two-layer pipe is formed between the sleeves of the duct connection portion, and the adjustment space has a fan-like shape having a minimum width in the center portion, and the center of the fan-like shape The simultaneous supply / exhaust ventilation fan according to any one of claims 1 to 3, wherein the corners are arranged so as to be approximately symmetrical in an angle of 1 to 3 °. The guide for guiding the insertion of the two-layer pipe is provided on each side wall of each sleeve that divides the air supply passage and the exhaust passage of the duct connection portion. The simultaneous supply / exhaust ventilation fan described. The simultaneous supply / exhaust type exhaust fan according to any one of claims 1 to 7, wherein a rib for blocking dew condensation water is provided at a lower portion on an exhaust side of the duct connection port. The simultaneous supply / exhaust ventilation fan according to any one of claims 1 to 8, wherein a packing is provided between the sleeves forming the air supply passage and the exhaust passage of the duct connection portion. A cylindrical heat insulating material is provided from a step portion formed by the duct connection port and the heat insulating portion to a tip of the duct connection port, and the two-layer pipe is inserted and connected between the duct connection port and the cylindrical heat insulating material. The simultaneous supply / exhaust ventilation fan according to claim 1 or 4, A wall surface is provided between the sleeves of the duct connection portion to restrict movement of the two-layer pipe connected to the duct connection portion in the ventilation direction, and the wall surface is disposed in accordance with the position of the stepped portion in the ventilation direction. The simultaneous supply / exhaust type ventilation fan according to claim 1 or 4, characterized by the above-mentioned. 12. The simultaneous supply / exhaust type exhaust fan according to claim 1, wherein the length of the sleeve of the duct connection portion is different between the supply side and the exhaust side. 13. The simultaneous supply / exhaust type ventilation fan according to claim 12, wherein the length of the sleeve of the duct connecting portion is such that the length of the sleeve on the exhaust side is longer than the length of the sleeve on the supply side. The simultaneous supply / exhaust type ventilation fan according to claim 13, wherein packing is applied to an outer periphery of the exhaust-side sleeve. A main body having an exhaust fan and an air supply fan provided therein, an exhaust air passage that communicates with each of the exhaust fan and the air supply fan, and a sleeve that is partitioned into the air supply air passage. A duct connection portion having a duct connection port that is inserted and connected to a two-layer pipe divided by a central partition wall, and a heat insulation portion is provided on an outer periphery of the duct connection portion. In a simultaneous supply / exhaust type ventilation fan in which a step portion is formed by a portion and the duct connection port, when connecting the duct connection portion and the two-layer pipe, a tip of the two-layer pipe is brought into contact with the step portion. How to install a simultaneous supply / exhaust ventilation fan that is connected and fixed.

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