JP4179315B2 - Heat exchange ventilator - Google Patents

Description

The present invention relates to a heat exchange ventilator employing a heat exchanger in which plate-shaped heat exchange elements are alternately arranged and stacked on a box-shaped main body casing, which is referred to as a cross-type (or cross-flow transmission type). It is about.

A total heat exchanger is a heat exchange system that combines sensible heat (ie, temperature) and latent heat (humidity), and the present invention employs this type of heat exchange system to implement OA (OutsideAir: Fresh air to be sucked), SA (SupplyAir: the outside air that has passed through the heat exchanger), RA (ReturnAir: the air that is sucked in by the ventilation fan and returned to the outside), and EA It is a total heat exchange ventilator and system of the type having four types of air flow systems (ExhaustAir: exhaust, that is, exhausted air after passing through a heat exchanger).

Recently, due to high airtightness and high thermal insulation of houses and improved performance of air-conditioning equipment, living hours with windows closed have become longer. The problem here is the problem of unstable ventilation due to natural ventilation, which is caused by the lack of air supply and ventilation, indoor humidification and air pollution, and the loss of energy due to the release of room temperature when ventilated by opening windows. Numerous problems have arisen, such as the invasion of pollen and dust contained in the outside air.
Therefore, recently, a ventilation system using the total heat exchanger has been developed and used in various fields to solve these problems.

  Various ventilators with built-in heat exchangers have been developed and devised so far, and many types have been put to practical use. For example, those described in Japanese Utility Model Laid-Open No. 3-48643 and Japanese Patent Laid-Open No. 5-223306 are one of them.

  The configuration of Japanese Utility Model Laid-Open No. 3-48643 is operated by operating an exhaust fan and an intake fan, and is sucked into the box from the indoor air inner suction port, and then blown from the outdoor outlet through the heat exchanger in the exhaust passage. It is discharged outside the room. On the other hand, the outdoor air is sucked into the box from the outdoor suction port, passes through the heat exchanger in the air supply passage, is blown out from the air outlet on the indoor side, is blown into the room, and is supplied into the room. At this time, in the heat exchanger, heat exchange is performed between the exhaust flow and the supply air flow, and the exhaust heat is collected to reduce the cooling / heating load. In this configuration, the exhaust and supply passages are partly formed integrally in the blade casings of the exhaust and supply fans, but there are irregularities in the flow path, and turbulence occurs in this part. However, there is a problem that this turbulent flow causes pressure loss and air blowing capacity decreases. In order to solve such problems, in Japanese Patent Application Laid-Open No. 5-223306, a casing in which a part of an air supply passage and an exhaust passage are provided integrally, and a separator that separates both the air supply and exhaust flows are provided. We are trying to solve this problem by forming the guide plate in one piece.

  However, the above-described prior art has a troublesome assembly because the structure is relatively complicated, and there is a case where an efficient air flow cannot be obtained due to this complexity. The fact that efficient ventilation is not performed means that fresh air cannot be supplied to each room and stable ventilation cannot be ensured, and the room temperature cannot be maintained.

Accordingly, the main object of the present invention is to provide a new and simple heat exchange type ventilator which has improved various deficiencies of the prior art.

Still another object of the present invention is to provide a heat exchange type ventilator that is simple in structure and economical, and is easy to install when installed in a general house. The present invention provides a novel structure that is simple and can be attached at low cost.

According to a first aspect of the present invention, a heat exchange type ventilator is provided with a return air port (23) on the indoor side surface of a box-shaped casing (11), and a plurality of side walls around the casing (11) are provided with outside air. An outside air intake port (20) for introducing air, an exhaust port (21) for discharging indoor air, and a plurality of indoor air supply ports (24) for supplying the outside air to a plurality of rooms, A first blower (13) for sucking outside air into the casing (11), a second blower (14) for sucking and discharging air from the room, and outside air and air from the room. A heat exchanger (15) for exchanging heat, and the casing (11) sucks the outside air from the outside air inlet (20) by the first blower (13) from the return air port (23). Heat exchange with heat exchanger (15) so that it is not mixed with indoor air Then, the air that has been supplied from the plurality of indoor air supply ports (24) to the plurality of indoors via the piping members and circulated through the indoors is returned to the return air ports (23 by the second blower (14)). ), And after exchanging heat with the sucked outside air in the heat exchanger (15), it is configured to be discharged from the exhaust port (21) to the outside so as not to be recirculated into the room. A heat exchange type ventilation device,
Both the fans (13, 14) are arranged up and down and are rotatably driven by a motor (12) arranged between the fans (13, 14).
The casing (11) forms an air passage between an upper wall portion of the case of the first blower (13) and a lower wall portion of the case of the second blower (14), and the outside air inlet ( 20) The outside air sucked from 20) is configured to flow to the indoor air supply port (24) after touching the motor (12) through the air passage ,
The heat exchanger (15) has a rectangular longitudinal cross-sectional shape and is formed in a box shape elongated in the direction in which the outside air suction port (20) and the exhaust port (21) are arranged side by side, so that the loss resistance of air flow is reduced. It is characterized by being attached at an angle in the longitudinal section direction.

The heat exchange type ventilator according to claim 2 of the present application is the heat exchange type ventilator according to claim 1, wherein the casing (11) is installed behind the ceiling, and a mounting frame is provided in the casing (11). An elastic locking device that is installed and formed with a claw is provided on the mounting frame body, and a holding frame body in which internal devices for blowing and heat exchange are stored and held is inserted into the mounting frame body from below. Thus, the holding frame body is locked to the mounting frame body by an elastic locking tool.

  According to the heat exchange type ventilator of claim 1, heat is exchanged with the indoor air so that fresh outside air does not mix with the indoor air, and is supplied to a plurality of indoors and is contaminated in the indoors. The entire building is ventilated by being discharged outside the room so that the air is not recirculated.

  According to the heat exchange type ventilator of the second aspect, since the holding frame can be inserted into the mounting frame, workability and maintainability are improved.

  In addition, these inventions are extremely simple in structure as described above, and are easy to assemble because two fans are mounted in the same direction. In particular, since two air blowers using the same mold are employed to form air flows in two different directions, it is extremely economical in parts production. Further, the holding frame can be freely attached to and detached from the mounting frame, and installation and maintenance are easy.

  In addition, since it has an action of cooling the motor which tends to be heated, the grease life of the ball bearing of the motor can be extended, so that the life of the motor itself can be extended and efficient ventilation can be provided. Is. In addition, by adopting the total heat exchange type ventilator as described above, fresh outside air is always converted to a temperature close to room temperature and supplied to the room, and air is convected while keeping a comfortable room temperature. The air can be exhausted, and a constant supply of fresh air and ventilation can be achieved without being influenced by weather conditions such as the airtightness of the house and the outside air temperature. Furthermore, since the temperature and humidity of indoor and outdoor air are exchanged, an appropriate humidity can be maintained.

  Further, since the holding frame body 41 serving as the main body is detachably fitted into the mounting frame body 31 installed in advance in the installation place, the main body including the holding frame body 41 is removed from below after the construction of the duct connecting portion is completed first. Since it can be installed easily by plugging in, and the work can be done in different places, it can be easily done even in the case of a house structure with a narrow ceiling as in recent times, and the main body can be easily removed Therefore, maintenance and inspection can be easily performed, which is extremely advantageous.

  Further, if the heat exchanger is a detachable type, it is convenient because the maintenance and inspection of the heat exchanger itself is easy.

  Hereinafter, the best mode for carrying out the present invention will be described based on examples.

1, 2 and 3 showing a preferred embodiment of the present invention, a box-shaped casing 11 includes a first blower 13 coupled to one of the rotating shafts of a motor 12 and the other rotating shaft. The second blower 14 attached to is attached to a substantially central position of the casing 11 via a desired mounting wall (see FIG. 3). Moreover, as is apparent from FIGS. 1 and 3, the first blower 13 and the second blower 14 are arranged vertically. The first and second blowers 13 and 14 are both sirocco fans formed of the same mold, and are arranged in the same direction so as to be coaxial with the motor 15 and in the same rotational direction. You don't have to worry about it being installed wrongly. In the vicinity of the mounting position of the motor 12 and the two blowers 13 and 14, as shown in FIG. 3 , there is a rectangular box-shaped heat exchanger 15 as shown in FIGS. ing.

The heat exchanger 15 is of a total heat exchange type and of a cross flow transmission type, and is configured by laminating and laminating plate-like heat exchange elements. Dirty air (RA) in the room passing through the heat exchanger 15 is heat-exchanged through a passage orthogonal to the passage of the heat exchanger through which the outside air passes, and is discharged from the exhaust port 21 by the second blower 14 to the outside. It is designed to be discharged into the water. In FIG. 3, the heat exchanger 15 has filters 25 and 26 attached to the side facing the outside air inlet 20 and the side facing the return air port 23, respectively. In FIG. 3, the heat exchanger 15 has a substantially square cross-sectional shape, and is attached to be inclined slightly to an angle of α = 20 degrees in the longitudinal cross-sectional direction . This is done in order to minimize the loss resistance of each air flow in the presence of several air flows.

On one side of the box-shaped casing 11, an outside air inlet 20 for sucking outside air and an exhaust port 21 in the vicinity thereof are arranged in parallel. The outside air inlet 20 is an opening through which outdoor air (OA) that seems to contain a lot of pollen, exhaust gas, etc. enters. From the exhaust port 21, dirty air (RA) in the room that has entered through a vent port 23 of the front panel 22 of the ventilator, which will be described later, is heat-exchanged through the heat exchanger 15 of the ventilator main body 10, and is thus outdoor. To be discharged. As is clear from FIG. 3, the heat exchanger 15 is elongated in the direction in which the outside air inlet 20 and the outlet 21 are juxtaposed.

  Here, the outside air (OA) sucked in from the outside air inlet 20 passes through the heat exchanger 15 as described above, passes through the first blower 13 as it is, and the second blower 14 is passed by the first blower 13. The air is fed into the indoor air supply port 24 while being cooled by touching the motor 12, that is, the motor 12, and is supplied to the room from there. Therefore, the ventilator of the present invention has a structure that exhibits a motor cooling effect.

  The dirty air (RA) in the room enters from the other side of the heat exchanger 15 and is sent to the second blower 14, and is discharged from the exhaust port 21 to the outside by the second blower 14. At this time, the dirty air in the room is sent directly to the exhaust port 21 without passing through the heat exchanger 15.

  A plurality (four in the illustrated example) of air supply ports 24 are disposed on the opposite side of the casing 11. The air supply port 24 is a blowout port for sending outside air (OA) from the outside air intake port 20 to the outside from the ventilator body 10 through the heat exchanger 15 and the first blower 13, that is, into the living room to be ventilated. It is. Therefore, it is called the indoor air supply port 24 here. The air (SA) blown out from the indoor air supply port 24 circulates in the room, passes through the return air port 23, the heat exchanger 15, and the second blower 14, and is exhausted from the exhaust port 21 as exhaust (EA). It is discharged outside.

  FIG. 4 illustrates a state in which the total heat exchange type ventilator 10 is installed as a system in a house. In the illustrated system, piping is divided into a first floor portion and a second floor portion of the house. In this way, two heat exchange devices are provided separately for the first floor part and the second floor part, and a one-floor complete type with a total heat exchange ventilator installed on the back of the ceiling of each floor eliminates the need for a duct space connecting the floors. The construction is simple and economical. However, as a matter of necessity or according to the capability of the heat exchange device itself, it is possible to have only one heat exchange device, and it is of course possible to have three or more systems. Although not shown in the figure, it is possible to incorporate a timer device so as to enable automatic switching between on and off, or a remote controller system can be attached.

FIG. 5 is a perspective view showing a preferred configuration of the box-shaped casing 11. In this figure, a box type casing 11, a mounting frame 31 that is installed initially as it is for example in the ceiling at the mounting location, the holding frame accommodating and holding the internal equipment such as heat exchangers 15 and feed air blower 13 and 14 And a body 41. Of these, as shown in the figure, the attachment frame 31 attached to the ceiling or the like has the outside air inlet 20, the outlet 21, and the indoor air inlet 24 formed in advance on the respective side walls, and a claw is provided at the lower part of the side walls. The formed elastic locking tools 32 and 33 are formed. Next, the holding frame body 41 detachably attached to the attachment frame body 31 via the elastic locking members 32 and 33 has a structure capable of forming the various air flows described above, and The motor 12, the blowers 13 and 14, and the heat exchanger 15 which are internal devices are mounted in advance. The holding frame body 41 formed in this way is inserted into the mounting frame body 31 mounted in advance from the lower side, and the claws of the elastic locking tools 32 and 33 are elastically moved into the locking recesses 42 and 43 , respectively. The holding frame body 41 is held in the attachment frame body 31 so as to be fitted. By adopting such a configuration, after the construction of the duct connecting portion is completed first, the main body including the holding frame body 41 can be easily attached by being inserted from the bottom, and the construction can be performed in different places. Therefore, construction can be easily performed even in the case of a house structure with a narrow ceiling as in recent times, and since the main body can be easily removed, maintenance and inspection can be easily performed, which is extremely advantageous.

  FIG. 6 illustrates the attachment (removal) of the heat exchanger 15 that is detachable. As shown in the figure, the heat exchanger 15 is integrally attached to the holding body 45 and the frame 46 provided, and via an elastic holder (not shown) provided at a predetermined position of the holding frame 41 shown in FIG. Removably held (see FIG. 3). Thus, maintenance and inspection of only the heat exchanger can be performed very easily.

  The present invention is simple in structure and economical, and can be used for a total heat exchange type ventilator that is easy to install, maintain, and inspect.

1 is a partially broken perspective view showing the structure of a total heat exchange type ventilator according to a preferred embodiment of the present invention. The internal explanatory drawing of the state which removed the front panel of the total heat exchange type ventilator shown in FIG. It is sectional drawing of the total heat exchange type ventilator shown in FIG. 1, and is a figure which shows the flow of air. The figure which shows an example which attached the ventilation apparatus of this invention and was systematized. The perspective view which shows the preferable Example of a box-type casing. Explanatory drawing which shows attachment / detachment operation of a heat exchanger.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 Casing 12 Motor 13 1st air blower 14 2nd air blower 15 Heat exchanger 20 Outside air intake port 21 Outlet port 22 Front panel 23 Return air port 24 Indoor air supply port 31 Attachment frame 32, 33 Elastic locking device 41 Holding Frame body 42, 43 Locking recess

Claims (2)

A return air port (23) is provided on the indoor side surface of the box-shaped casing (11), an outdoor air intake port (20) for introducing outside air to a plurality of side walls around the casing (11), and indoor air An exhaust port (21) for exhausting air and a plurality of indoor air supply ports (24) for supplying the outside air into a plurality of rooms are arranged, and a first for sucking the outside air into the casing (11) 1 blower (13), a second blower (14) for sucking and discharging air from the room, and a heat exchanger (15) for exchanging heat between the outside air and the air from the room, The casing (11) is heated so that outside air from the outside air inlet (20) by the first blower (13) is not mixed with indoor air sucked from the return air port (23). After the heat exchange in the exchanger (15), the plurality of indoor air inlets (24 The air that has been supplied into the plurality of rooms through the piping members and circulated in the room is taken in from the return port (23) by the second blower (14), and the sucked outside air and the heat exchanger A heat exchange type ventilator configured to discharge from the exhaust port (21) to the outside of the room so as not to be recirculated into the room after heat exchange in (15),
Both the fans (13, 14) are arranged up and down and are rotatably driven by a motor (12) arranged between the fans (13, 14).
The casing (11) forms an air passage between an upper wall portion of the case of the first blower (13) and a lower wall portion of the case of the second blower (14), and the outside air inlet ( 20) The outside air sucked from 20) is configured to flow to the indoor air supply port (24) after touching the motor (12) through the air passage ,
The heat exchanger (15) has a rectangular longitudinal cross-sectional shape and is formed in a box shape elongated in the direction in which the outside air suction port (20) and the exhaust port (21) are arranged side by side, so that the loss resistance of air flow is reduced. The heat exchange type ventilator is characterized in that it is attached at an angle in the longitudinal section direction.   2. The heat exchange type ventilation apparatus according to claim 1, wherein the casing (11) is installed behind a ceiling, a mounting frame is installed in the casing (11), and an elastic locking tool that forms a claw is provided in the casing (11). The holding frame body is inserted into the mounting frame body from below by being inserted into the mounting frame body from below while being provided on the mounting frame body and storing and holding internal devices for air blowing and heat exchange. A heat exchange type ventilator which is locked by an elastic locking tool.

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