JP2012255580A - Simultaneous supply/exhaust type heat exchange ventilation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a simultaneous supply/exhaust type heat exchange ventilation device that can stably control a constant air volume with high accuracy and shortening a maintenance time of an air volume sensor for air supply and an air volume sensor for exhaust.SOLUTION: This ventilation device includes an exhaust flue for exhausting the indoor air outdoors and an air supply flue for supplying the outdoor air indoors, respectively disposed in a box-shaped body housing 1, an air blower 3 for exhausting disposed in the exhaust flue, an air blower 2 for air supplying disposed in the air supply flue, an exhaust-side blade casing block 10 disposed on the air blower 3 for exhausting and forming the exhaust flue, an air supply-side blade casing block 11 disposed on the air blower 2 for air supplying and forming the air supply flue, and a heat exchanger 5 disposed on an intersecting part of the exhaust flue and the air supply flue, and exchanging heat between the indoor air and the outdoor air. The air blower 2 for air supplying and the air blower 3 for exhausting are disposed at a downstream side of the heat exchanger 5, and the air volume sensor 29 for air supply, is disposed at a suction port side of the air supply-side blade casing block 11.

Description

  The present invention relates to a simultaneous supply / exhaust heat exchange ventilator that simultaneously supplies and exhausts air using a duct in which a main body is installed on the back of the ceiling and an exhaust panel is installed on the ceiling surface.

  Conventionally, in a simultaneous supply / exhaust type heat exchange ventilator, fresh outdoor air outside the room is sucked from the outside air inlet through the outside air duct, dust and dust are removed by an outside air filter, and heat is exchanged with room air by a total heat exchanger. Then, it humidifies or cools with a heat exchanger, is humidified with a humidifier, and is supplied indoors. Also, the room air is sucked from the return air inlet through the return air duct, and dust and dust are removed by the return air filter, and after exchanging heat with the outdoor air by the total heat exchanger, the room air is discharged to the outside.

  Here, a supply air flow sensor and an exhaust air flow sensor are installed in each of the air supply air passage through which fresh outdoor air is supplied indoors and the exhaust air passage through which indoor air is discharged to the outside. Thus, the constant air volume control is performed so that the supply air volume and the exhaust air volume are arbitrary.

  At this time, the detection values detected by the air supply air volume sensor and the exhaust air volume sensor are compared with preset air supply air volume setting values and exhaust air volume setting values, and based on the comparison result, the air supply air volume control target value is compared. The exhaust air volume control target value is set, and the detected value detected by the supply air volume sensor and the exhaust air volume sensor is compared with the supply air volume control target value and the exhaust air volume control target value. By providing the supply air volume control means and the exhaust air volume control means that control the air flow of the blower to each target value, it is possible to set the air flow control target value that controls the appropriate air volume in consideration of duct pressure loss Therefore, the calculation of duct pressure loss during installation and the initial setting of the air volume are unnecessary.

  In the conventional simultaneous supply / exhaust heat exchange ventilator, the supply air volume sensor and the exhaust air volume sensor are arranged on the downstream side of the supply air blower and the exhaust blower outlet of the exhaust blower (for example, Patent Document 1). reference.).

Japanese Patent No. 2699672

  However, according to the above-described conventional technology, since the supply air volume sensor and the exhaust air volume sensor are installed immediately after the blowout of the blower, there is a problem that the wind speed is easily disturbed and stable measurement cannot be performed. In addition, it is necessary to remove the air supply blower and the exhaust air blower during the maintenance of the air supply air flow sensor and the exhaust air flow sensor, which increases the time required for maintenance.

  The present invention has been made in view of the above, and is capable of performing stable and highly accurate constant air flow control, and shortening the maintenance time of the air flow sensor for air supply and the air flow sensor for exhaust air, and simultaneous supply / exhaust heat exchange ventilation The object is to obtain a device.

  In order to solve the above-described problems and achieve the object, the present invention provides an exhaust air passage that is provided in a box-shaped main body and exhausts indoor air to the outside of the room, and air supply that supplies outdoor air to the inside of the room. An air blowing path, an exhaust air blower provided in the exhaust air path, an air supply blower provided in the air supply air path, an exhaust-side blade casing block that forms the exhaust air path in the exhaust air blower, and an air supply air provided in the air supply fan A heat exchanger provided at the intersection of the air supply side blade casing block forming the passage and the exhaust air passage and the air supply air passage to exchange heat between the indoor air and the outdoor air. The blower and the exhaust blower are arranged on the downstream side of the heat exchanger, and are provided with a supply air volume sensor on the suction port side of the blade casing block on the supply side.

  According to the present invention, when air supply and exhaust airflow are detected by an airflow sensor, wind rectified from turbulent flow to laminar flow by passing through a heat exchanger is detected, so that stable constant airflow control is possible. In addition, there is an effect that the maintenance time of the supply air volume sensor and the exhaust air volume sensor can be shortened.

FIG. 1 is a diagram showing a configuration of a simultaneous supply / exhaust heat exchange ventilator according to an embodiment of the present invention. FIG. 2 is a diagram illustrating a configuration of an internal air path and an air volume control system of the simultaneous supply / exhaust heat exchange ventilator according to the embodiment. FIG. 3 is a diagram illustrating an internal air path of the simultaneous supply / exhaust heat exchange ventilator according to the embodiment. FIG. 4 is an exploded perspective view of the entire simultaneous supply / exhaust heat exchange ventilator according to the embodiment. FIG. 5 is an exploded perspective view of the blower unit of the simultaneous supply / exhaust heat exchange ventilator according to the embodiment. FIG. 6 is an exploded perspective view of the heat exchanger unit of the simultaneous supply / exhaust heat exchange ventilator according to the embodiment. FIG. 7 is an exploded perspective view showing a schematic configuration of a position where the air flow rate sensor for air supply is fixed. FIG. 8 is a schematic diagram showing a state in which the supply air volume sensor is attached to the cover plate. FIG. 9 is a perspective view showing a schematic configuration in the vicinity of a position where the exhaust air volume sensor is fixed. FIG. 10 is a schematic view showing a state in which the exhaust air volume sensor is attached to the main body box.

  Embodiments of a simultaneous supply / exhaust heat exchange ventilator according to the present invention will be described below in detail with reference to the drawings. Note that the present invention is not limited to the embodiments.

Embodiment.
FIG. 1 is a diagram showing a configuration of a simultaneous supply / exhaust heat exchange ventilator according to an embodiment of the present invention. The simultaneous supply / exhaust type heat exchange ventilator of the embodiment is of a ceiling installation type installed in a ceiling space, and outdoor outdoor air is introduced from an air supply duct connection port 23a and is supplied by an indoor terminal component 24. It sends it into the room as supply air. Further, this simultaneous supply / exhaust heat exchange ventilator introduces indoor air from the panel 28 and sends it out of the room through the exhaust duct connection port 23b.

  FIG. 2 is a diagram illustrating a configuration of an internal air path and an air volume control system of the simultaneous supply / exhaust heat exchange ventilator according to the embodiment. FIG. 3 is a diagram illustrating an internal air path of the simultaneous supply / exhaust heat exchange ventilator according to the embodiment. The air supply passage introduces outdoor outdoor air from the air supply duct connection port 23 a, passes through the built-in heat exchanger 5, passes through the air supply fan 14, and supplies the indoor air through the indoor terminal component 24. On the other hand, the exhaust air passage introduces room air from the panel 28, passes through the built-in heat exchanger 5, passes through the air passage 17 through the exhaust fan 15, and exhausts to the outside through the exhaust duct connection port 23b. The heat exchanger 5 has a function of collecting the heat quantity of the exhaust air into the supply air. The supply air volume and the exhaust air volume are controlled by the air volume control unit 31 so as to be the target air volume based on the detection values of the supply air volume sensor 29 and the exhaust air volume sensor 30, respectively. The supply air volume sensor 29 and the exhaust air volume sensor 30 are configured to convert the air volume with a tachometer using an impeller.

  As shown in FIG. 2, the simultaneous supply / exhaust type heat exchange ventilator according to the embodiment has a blower unit 4 in which an air supply fan 14 and an exhaust fan 15 are installed in an up and down direction, and is further provided with an air supply air passage. The stack type heat exchanger 5 in which the exhaust air passage and the exhaust air passage are orthogonal to each other is inscribed side by side. At this time, since the cross section of the air path of the heat exchanger 5 is formed by alternately laminating elements in which flat heat transfer plates and corrugated spacing plates (corrugated width pitch of about 5 mm) are stacked, the waves A mold section is formed. The corrugated cross-section holes gather to form an air supply passage and an exhaust air passage.

  As shown in FIG. 2, the supply air volume sensor 29 has a blade surface of the supply air volume sensor 29 and the wind direction orthogonal to the downstream side of the heat exchanger 5 passing through the supply air path. As shown, the vane casing block 11 is arranged on the side opposite to the indoor terminal part 24 from the center on the suction port side.

  Further, as shown in FIG. 2, the exhaust air volume sensor 30 has the blade surface of the exhaust air volume sensor 30 and the wind direction orthogonal to the downstream side through the exhaust air passage of the heat exchanger 5, and further shown in FIG. Thus, it arrange | positions in the center of the surface by the side of the exhaust air path of the heat exchanger 5. FIG.

  FIG. 4 is an exploded perspective view of the entire simultaneous supply / exhaust heat exchange ventilator according to the embodiment. As shown in FIG. 4, a blower unit 4 in which an air supply fan 2 inscribed with an air supply fan 14 and an exhaust fan 3 inscribed with an exhaust fan 15 are incorporated in the main body box 1, and heat A heat exchanger unit 6 incorporating the exchanger 5 is assembled side by side. The main body box 1 is provided with two rectangular openings 7 arranged side by side on one side thereof, and the other opposite side face is opened as an opening 25. A half of the lower surface of the main body box 1 near the side surface provided with the rectangular opening 7 is opened as an inspection port 8. An air supply duct connection port 23 a and an exhaust duct connection port 23 b provided in the terminal component 22 are inserted into the opening 7, and the air supply duct connection port 23 a and the exhaust duct connection port 23 b are connected to the main body box 1. Protrudes out of.

  FIG. 5 is an exploded perspective view of the blower unit of the simultaneous supply / exhaust heat exchange ventilator according to the embodiment. As shown in FIG. 5, at the center of the blower unit 4, a motor mounting plate 9 is sandwiched between a blade casing block 10 made of upper foamed polystyrene and a blade casing block 11 made of lower foamed polystyrene. The motor 12 of both axes is attached to the center. The upper blade casing block 10 is provided with a scroll space 13 having an inlet on the upper surface and an outlet on the lower surface, and an exhaust fan 15 mounted on the rotating shaft of the motor 12 in the scroll space 13. Is designed to rotate. Further, the lower blade casing 11 has a scroll space in which a suction port is opened on the side surface and an air outlet is opened on the other side surface, and an air supply fan mounted on the rotating shaft of the motor 12 in the scroll space. 14 rotates.

  FIG. 6 is an exploded perspective view of the heat exchanger unit of the simultaneous supply / exhaust heat exchange ventilator according to the embodiment. As shown in FIG. 6, the heat exchanger unit 6 has a hexahedron structure in which the heat exchanger 5 is detachably fitted into an air channel structure 16 made of expanded polystyrene having an open bottom surface, and is shown in FIG. As shown, the main body box 1 is assembled side by side next to the blower unit 4 from the inspection port 8. An air passage 17 that leads to the exhaust air passage of the heat exchanger 5 is formed in the air passage structure 16, and an air passage 18 that leads to the outlet of the upper blade casing block 10 is formed. Further, the air passage structure 16 is formed with an air passage 19 that communicates with the air supply air passage of the heat exchanger 5, and one end thereof communicates with the suction port on the side surface of the lower blade casing block 11. A clean filter 20 is attached to the air passage 19 so that it can be inserted and removed through a groove, and a clean filter 21 is also attached to the inlet side of the exhaust air passage of the heat exchanger 5.

  Next, the case where the supply air volume sensor 29 is fixed will be described. FIG. 7 is an exploded perspective view showing a schematic configuration of a position where the supply air volume sensor 29 is fixed. As shown in FIG. 7, the air flow sensor 29 for air supply is located on the downstream side through the air supply path of the heat exchanger 5 from the air path 19 on one side of the air path structure 16. The upper side surface of the cover plate 27 provided with the indoor opening 26 corresponding to the inlet side of the exhaust air passage 5 and the fastening foot portion of the air supply air volume sensor 29 are fastened and fixed.

  FIG. 8 is a schematic view showing a state in which the supply air volume sensor 29 is attached to the lid plate 27. As shown in FIG. 8, the fastening foot portion of the air flow rate sensor 29 can be fastened to the lid plate 27, and the wake side through the corrugated cross-sectional air passage on the air supply side of the heat exchanger 5, And since it is upstream from the air supply blower 2, the wind speed distribution becomes stable.

  Next, the case where the exhaust air volume sensor 30 is fixed will be described. FIG. 9 is a perspective view showing a schematic configuration in the vicinity of a position where the exhaust air volume sensor 30 is fixed. As shown in FIG. 9, the exhaust air volume sensor 30 is a hexahedron main body box so as to be positioned on the wake side from the air passage 17 on one side of the air passage structure 16 through the exhaust air passage of the heat exchanger 5. 1 is fastened together with the fastening foot portion of the exhaust air volume sensor 30 to the main body box 1 using a fastening part (half screw) stepped from the lower surface.

  FIG. 10 is a schematic view showing a state in which the exhaust air volume sensor 30 is attached to the main body box 1. As shown in FIG. 10, the fastening foot portion of the exhaust air volume sensor 30 can be fastened to the main body box 1, the wake side through the porous air passage of the corrugated cross section on the exhaust side of the heat exchanger 5, and Since it is on the upstream side of the exhaust blower 3, the wind speed distribution is stable. Thus, by providing the air volume sensor 29 for air supply and the air volume sensor 30 for exhaust air, it is possible to perform constant air volume control on the air supply side and constant air volume control on the exhaust side, respectively. Various combinations of controls are also possible.

  When maintaining the air supply air volume sensor 29, it is possible to remove the air supply air volume sensor 29 simply by removing the cover plate 27. Therefore, the time required for maintaining the air supply air volume sensor 29 can be reduced. .

  Similarly, when the exhaust air volume sensor 30 is maintained, the exhaust air volume sensor 30 can be taken out simply by removing the clean filter 21 and the heat exchanger 5. You can also save time.

  In the present embodiment, the supply air volume sensor 29 and the exhaust air volume sensor 30 are of an impeller type, but the present invention is not limited to this. For example, a thermistor type or a hot wire type air quantity sensor, etc. The same effect can be obtained by using.

  As described above, the simultaneous supply / exhaust type heat exchange ventilator according to the present embodiment can detect a stable air volume by the wind rectified into a laminar flow by passing through the heat exchanger, and can control the constant air volume with high accuracy. Can be done.

  Furthermore, when the air volume sensor for air volume detection is maintained, the number of parts that need to be removed can be reduced, so that the time required for maintenance can be reduced.

DESCRIPTION OF SYMBOLS 1 Main body box 2 Blower for supply of air 3 Blower for exhaust 4 Fan unit 5 Heat exchanger 6 Heat exchanger unit 7, 25 Opening 8 Inspection port 9 Motor mounting plate 10, 11 Blade casing block 12 Motor 13 Scroll space 14 Supply Air fan 15 Exhaust fan 16 Air passage structure 17, 18, 19 Air passage 20, 21 Clean filter 22 Terminal component 23a Air supply duct connection port 23b Exhaust duct connection port 24 Indoor terminal component 26 Indoor opening portion 27 Cover plate 28 Panel 29 Airflow sensor for air supply 30 Airflow sensor for exhaust 31 Airflow controller

Claims (6)

Provided in a box-shaped main body, an exhaust air passage for exhausting indoor air to the outside, and an air supply air passage for supplying outdoor air to the interior;
An exhaust blower provided in the exhaust air passage;
An air supply fan provided in the air supply path;
An exhaust-side blade casing block that forms the exhaust air passage in preparation for the exhaust blower;
A blade casing block on the supply side that forms the supply air passage in preparation for the supply blower,
A heat exchanger provided at the intersection of the exhaust air passage and the air supply air passage to exchange heat between the indoor air and the outdoor air,
The air supply blower and the exhaust blower are arranged on the downstream side of the heat exchanger,
A simultaneous supply / exhaust type heat exchange ventilator comprising a supply air volume sensor on a suction port side of the supply casing blade casing block. Provided in a box-shaped main body, an exhaust air passage for exhausting indoor air to the outside, and an air supply air passage for supplying outdoor air to the interior;
An exhaust blower provided in the exhaust air passage;
An air supply fan provided in the air supply path;
An exhaust-side blade casing block that forms the exhaust air passage in preparation for the exhaust blower;
A blade casing block on the supply side that forms the supply air passage in preparation for the supply blower,
A heat exchanger provided at the intersection of the exhaust air passage and the air supply air passage to exchange heat between the indoor air and the outdoor air,
The air supply blower and the exhaust blower are arranged on the downstream side of the heat exchanger,
A simultaneous supply / exhaust heat exchange ventilator comprising an exhaust air volume sensor on a suction port side of the exhaust-side blade casing block.   The simultaneous supply / exhaust type heat exchange ventilator according to claim 1, wherein the air supply sensor for air supply is disposed substantially at the center on the suction port side of the blade casing block on the air supply side.   3. The simultaneous supply / exhaust type heat exchange ventilator according to claim 2, wherein the exhaust air volume sensor is disposed substantially at the center of the heat exchanger side surface of the heat exchanger. The main body box has an opening for maintenance of the heat exchanger,
5. The simultaneous supply and discharge according to claim 2, wherein the exhaust air volume sensor can be maintained through the opening by removing the heat exchanger from the main body box through the opening. Type heat exchange ventilator. The main body box has an opening for maintenance of the heat exchanger,
The simultaneous supply according to claim 1 or 3, wherein the supply air volume sensor can be maintained through the opening by removing the heat exchanger from the main body box through the opening. Exhaust heat exchange ventilator.

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