JP4760867B2 - Total heat exchange ventilator - Google Patents

Description

  This invention is a total heat exchange ventilation that employs a total heat exchanger called a cross-type (or cross-flow permeation type) box-type body casing, in which plate-shaped heat exchange elements are alternately arranged and stacked. It relates to the device.

  The total heat exchanger is a heat exchange system that combines sensible heat (that is, temperature) and latent heat (humidity), and the present invention employs this type of heat exchange system and adopts OA (OutsideAir: Fresh air sucked by a ventilation fan), SA (SupplyAir: the above-mentioned outside air that has passed through the heat exchanger), RA (Return Air: indoor air that is sucked by the ventilation fan and returned to the outside) , And EA (Exhaust Air: exhaust, ie, exhausted air after passing through a heat exchanger), a total heat exchange ventilator and system of the type having an air flow system.

  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. Therefore, the problem of unstable ventilation due to natural ventilation is the problem of indoor humidification and air pollution due to insufficient air supply and ventilation, 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 the exhaust fan and the intake fan, and is sucked into the box from the indoor air inner suction port, and blown out 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 recovered 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 structure total heat exchange type ventilator which has improved various deficiencies of the prior art.

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

According to the first aspect of the present invention , a return air port is provided on the lower surface of a box-shaped casing installed on the back of the ceiling, and an outside air intake port for introducing outside air is discharged to a plurality of side walls around the casing, and indoor air is discharged. An exhaust port and a plurality of indoor air supply ports for supplying the outside air into a plurality of rooms are arranged, a first blower for sucking the outside air into the casing, and air from the room is sucked and discharged A second blower for heat exchange and a heat exchanger for exchanging heat between outside air and indoor air,
The casing is subjected to heat exchange by a heat exchanger so that the outside air introduced from the outside air intake port by the first blower is not mixed with the indoor air sucked from the return air port. The air that has been supplied to the plurality of rooms through the piping members from the plurality of indoor air supply ports and circulated in the room is introduced from the return air inlet by the second blower and introduced from the outside air intake port After the heat exchange with the outside air and the heat exchanger, it is configured to discharge from the exhaust port to the outside so as not to be recirculated into the room,
The air blowers are heat exchange type ventilators that are arranged up and down and are rotationally driven by a motor arranged between the air blowers ,
The casing is configured such that outside air introduced from the outside air inlet flows into the indoor air inlet after touching the motor through the heat exchanger,
The return air port is provided along a peripheral portion of a front panel that covers a lower surface of the casing, and sucks room air from four directions .

According to a second aspect of the present invention, the casing installed on the back of the ceiling is attached to the back of the ceiling for holding outside air into the room and discharging indoor air to the outdoors, and for holding the holding frame. With a mounting frame,
The mounting frame is formed in a frame shape so that the holding frame can be inserted from below, and the outside air intake port, the discharge port, and the With an indoor air inlet,
The inside of the holding frame body supplies the outside air introduced from the outside air intake port by the first blower through the heat exchanger into the room through the piping member from the indoor air supply port. The indoor air is taken in from a return air port provided on the indoor side by the blower, and after being heat-exchanged by the heat exchanger, the air is discharged from the exhaust port to the outside. .

  According to the present invention, heat is exchanged with the indoor air so that fresh outside air does not mix with the indoor air, and the fresh air is supplied to a plurality of indoors and the dirty air in the indoors is recirculated. To prevent this, the entire building is ventilated by being discharged outside.

  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). 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. There is no need to worry about accidentally mounting it in the wrong direction. In the vicinity of the mounting position of the motor 11 and the two blowers 13 and 14, a box-shaped heat exchanger 15 having a rectangular cross section is installed.

  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. 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 with a slight inclination to an angle of α = 20 degrees. 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.

  Here, the outside air (OA) sucked 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 main 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 if it is a one-floor complete type with a total heat exchange ventilator installed on the back of the ceiling of each floor, a duct space connecting each floor becomes unnecessary. 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-shaped casing 11 includes a mounting frame 31 that is first installed on the ceiling, which is a mounting location, and a holding frame that stores and holds internal devices such as the heat exchanger 15 and the fans 13 and 14. 41. Among them, as shown in the figure, the attachment frame body 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 nail is formed in the lower part of the side walls. The 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 attached in advance to the mounting location from the lower side, and the claws of the elastic locking devices 32 and 33 are elastically moved into the locking recesses 32 and 33, 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 is provided on the lower surface of a box-shaped casing installed behind the ceiling, and an outside air intake port for introducing outside air, an air exhaust port for discharging indoor air, and the outside air on a plurality of side walls around the casing. A plurality of indoor air supply ports for supplying air into a plurality of rooms, a first blower for sucking outside air into the casing, and a second blower for sucking and discharging air from the room And a heat exchanger for exchanging heat between outside air and indoor air,
The casing is subjected to heat exchange by a heat exchanger so that the outside air introduced from the outside air intake port by the first blower is not mixed with the indoor air sucked from the return air port. The air that has been supplied to the plurality of rooms through the piping members from the plurality of indoor air supply ports and circulated in the room is introduced from the return air inlet by the second blower and introduced from the outside air intake port After the heat exchange with the outside air and the heat exchanger, it is configured to discharge from the exhaust port to the outside so as not to be recirculated into the room,
The air blowers are heat exchange type ventilators that are arranged up and down and are rotationally driven by a motor arranged between the air blowers ,
The casing is configured such that outside air introduced from the outside air inlet flows into the indoor air inlet after touching the motor through the heat exchanger,
The return air port is provided along a peripheral portion of a front panel that covers a lower surface of the casing, and sucks room air from four directions . The casing installed on the back of the ceiling includes a holding frame for taking outside air into the room and discharging indoor air to the outdoors, and a mounting frame attached to the back of the ceiling to hold the holding frame,
The mounting frame is formed in a frame shape so that the holding frame can be inserted from below, and the outside air intake port, the discharge port, and the With an indoor air inlet,
The inside of the holding frame body supplies the outside air introduced from the outside air intake port by the first blower through the heat exchanger into the room through the piping member from the indoor air supply port. The indoor air is taken in from a return air port provided on the indoor side by the blower, and after being heat-exchanged by the heat exchanger, the air is discharged from the exhaust port to the outside. The heat exchange type ventilator according to claim 1 .

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