JP2007298252A - Residential ventilator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a residential ventilator capable of drastically saving power consumption of the ventilator by finely controlling the operation of the ventilator. <P>SOLUTION: This residential ventilator 100 includes: a suction fan 52 for introducing outdoor air into an indoor space; an exhaust fan 48 for exhausting indoor air to the outside of a room; and a heat exchanger 42 for reducing the temperature difference between the outdoor air and the indoor air; and is characterized in that the suction fan 52, the exhaust fan 48 and the heat exchanger 42 are set independently changeable in respective on/off operations thereof. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a residential ventilator, and more particularly to a residential ventilator that can greatly save power consumption of the ventilator by finely controlling the operation of the ventilator.

Our daily life has continued to increase the burden on the global environment. In particular, global warming has begun to appear in our daily lives in the form of submerged land due to rising sea levels, changes in the habitat of animals and plants, and the emergence of unprecedented giant hurricanes.
In recent years, the Kyoto Protocol has come into effect, and we are required to live more in consideration of the global environment. The Kyoto Protocol regulates carbon dioxide emissions, but when complying with the Kyoto Protocol, efforts must be made to reduce carbon dioxide emissions not only in industry but also in general households. Specific measures in ordinary households include living in a house with good cooling and heating efficiency.

  Under current legislation, new homes are required to have a 24-hour ventilator. For this reason, in summer and winter, when the temperature difference between indoor air and outdoor air is large, even if the indoor space is adjusted to a comfortable temperature, it will be immediately discharged to the outside. The cost of this can be substantial.

Therefore, when exhausting indoor air to the outside or taking outdoor air into the room, a technique has been proposed that reduces the temperature difference between the indoor air and the outdoor air by operating a heat exchanger (for example, Patent Document 1 and Patent Document 2). By adopting a ventilator as in Patent Document 1 and Patent Document 2, the thermal energy of the air exhausted from the room can be added to the fresh air (outdoor air) taken into the room, so that the temperature is always comfortable. It is widely used because it can take in fresh air adjusted to room temperature.
Japanese Utility Model Publication No. 4-74237 JP-A-8-285328

  However, in the ventilators as in Patent Document 1 and Patent Document 2, since the suction fan and the exhaust fan are operated all year round, the energy consumed by the ventilator itself may be considerable. There is a problem.

  Therefore, the present invention can take in fresh air adjusted to a comfortable state throughout the year into the indoor space, reduce energy consumed by the ventilator itself, and greatly reduce running costs. The purpose is to provide ventilation equipment.

In order to achieve the above object, the present invention has the following configuration.
That is, the present invention has a suction fan for taking outdoor air into the indoor space, a discharge fan for discharging indoor air to the outside, and a heat exchanger for relaxing a temperature difference between the outdoor air and the indoor air, The suction fan, the exhaust fan, and the heat exchanger are set to be capable of switching on and off independently of each other.

The on / off switching of the suction fan, the exhaust fan, and the heat exchanger is performed when the temperature difference between the outdoor air and the indoor air is equal to or greater than a predetermined temperature difference, the heat exchanger and the suction fan. All of the exhaust fans are operated, and when the temperature difference between outdoor air and room air is less than a predetermined temperature difference, only the exhaust fan is operated.
Thereby, since the electric energy consumed by the residential ventilator can be suppressed, an energy-saving residential ventilator can be provided.

In addition, an outdoor air intake section is provided separately from the suction fan.
Thereby, even if the suction fan does not operate, a sufficient amount of fresh air can be taken into the room.

The outdoor air taken in from the outdoor air take-in section is supplied to the indoor space after being supplied to the underfloor space of the house.
Thereby, especially in summer, since fresh air can be once cooled by the natural energy of the underfloor space and then taken into the indoor space, the energy can be further saved.

In addition, the outdoor air intake section passes through the ground.
Thereby, fresh air can be brought close to the underground temperature maintaining a constant temperature, and further energy saving can be achieved.

According to the present invention, when the temperature difference between the indoor air and the outdoor air is large, ventilation is performed while relaxing the difference between the thermal energy of the indoor air and the thermal energy of the outdoor air (while collecting heat). Therefore, the energy required for air conditioning can be used effectively. On the other hand, when the temperature difference between the indoor air temperature and the outdoor air temperature is small, the heat exchanger and the suction fan are deactivated, so that unnecessary power energy consumption can be eliminated.
As described above, the running cost of the residential ventilation device can be significantly reduced while maintaining the comfort level at the same level as that of the conventional residential ventilation device.

  DESCRIPTION OF EMBODIMENTS Hereinafter, an embodiment of a residential ventilation device according to the present invention will be described based on the drawings.

(First embodiment)
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is an explanatory view showing a first embodiment of a residential ventilation device according to the present invention. The house 200 according to the present embodiment maintains a high degree of airtightness by surrounding the indoor space with the heat insulating materials 10 and 10a, and also takes in the outside air in the wall formed by the heat insulating material 10 and forcibly releases the air. It is designed to maintain an environment in which fresh air is circulated in the house by adopting a ventilation system that allows the air to flow.

  As shown in FIG. 1, the heat insulating material 10 is disposed as a part of the wall of the side surface of the house 200. Moreover, the heat insulating material 10a which partitions between a ceiling part and an attic is arrange | positioned on the beam. The heat insulating material 10 that constitutes a part of the side surface portion of the building and the heat insulating material 10a that partitions the ceiling portion and the attic are installed so as to cover almost the entire house 200 except for the window portion and the like. Thereby, the airtightness and heat insulation of the house 200 can be improved.

  An external ventilation layer 12 is provided between the heat insulating material 10 and the outer wall surface. The external ventilation layer 12 is formed by attaching an external wall body 14 with a layer space through which air is circulated between the thermal insulation material 10 forming a part of the wall body. The outer ventilation layer 12 is provided on the entire outer surface of the wall body, and as shown in FIG. 1, the lowermost end opens and the upper part communicates with the attic space 16. An exhaust port 18 is provided at the top of the roof, and air that has entered from the lower end of the external wall 14 in the external ventilation layer 12 flows into the attic space 16 and is then exhausted from the exhaust port 18. In the external ventilation layer 12, such an air flow is constantly generated.

  Reference numeral 20 denotes a foundation concrete portion of the building. A standing wall portion 22 is formed integrally with the foundation concrete portion 20. The standing wall portion 22 is provided for the purpose of supporting the structure of the house 200 such as the wall or the pillar, and for the purpose of forming an underfloor space 25 as a space through which air flows under the floor of the house 200. That is, in the house 200 according to the present embodiment, the entire underfloor is used as a common air circulation space, and air is circulated from the underfloor space 25 to the inner surface of the wall and each room.

Although it is sufficient for the standing wall portion 22 to secure a sufficient space for air to flow under the floor, in the present embodiment, the basic concrete portion 20 is set lower than the position of the ground 24 and a general dwelling is used. The height of the standing wall portion 22 is made larger than that of the standing wall portion. Thereby, the underfloor space 25 is made wider than the underfloor space in the conventional residence.
The foundation concrete portion 20 places concrete on the entire lower surface of the floor, thereby preventing moisture from entering from below the floor. In addition, the foundation concrete portion 20 is provided with a constant thickness so that the foundation concrete portion 20 can be used as a heat storage body for storing underground heat.

  Further, by making the foundation concrete portion 20 lower than the ground position, geothermal heat can be used more efficiently, and the temperature change of the foundation concrete portion 20 is made as small as possible depending on the season. In order to prevent moisture from entering from the foundation concrete portion 20, a moisture-proof layer 26 may be provided on the lower surface of the foundation concrete portion 20.

  The standing wall portion 22 of the foundation concrete portion 20 in the present embodiment is formed in a state of being completely closed without providing a ventilation port. Thereby, the underfloor space 25 is completely sealed by the foundation concrete portion 20 and the standing wall portion 22, and the airtightness of the underfloor space 25 is ensured. Moreover, the heat insulating material 10 is extended on the outer side or the inner side of the standing wall part 22, or both sides of the outer side and the inner side so that the heat insulating property in the underfloor space 25 can be suitably obtained.

Reference numeral 30 denotes an indoor floor, which is disposed on the large drawing material and the joist. An air flow path 34 for circulating air from the underfloor space 25 is formed below the floor portion 30.
Reference numeral 32 denotes an indoor inner wall. An air flow path 34 through which air from the underfloor space 25 flows also between the inner wall portion 32 and the heat insulating material 10 constituting the wall body. The air flow path 34 is formed as a layer space between the heat insulating material 10 and the inner wall portion 32, and is formed so that air from the underfloor space 25 rises in the air flow path 34 along the inner surface of the heat insulating material 10. .

  An intake port 36 is formed in the inner wall portion 32. The air inlet 36 is for allowing air to flow into the room, and is installed close to the ceiling 38 in the present embodiment. Of course, it is also possible to install the intake port 36 at a low position on the wall surface. In addition, the air inlet 36 may be provided not only at one place with respect to the inner wall portion 32 but also at a plurality of places.

  The ceiling 38 is provided with an exhaust port 40 by opening a part of the ceiling 38. An exhaust duct 44 is connected to the exhaust port 40 up to a heat exchange ventilation fan 42 which is a heat exchanger installed above the ceiling 38. The heat exchange ventilation fan 42 is installed in a space above the ceiling 38 and below the heat insulating material 10a. In the present embodiment, the heat exchange ventilation fan 42 is disposed in the space, but may be disposed in the underfloor space 25.

  The exhaust duct 44 passes through the heat exchanging ventilation fan 42, and the end portion communicates with the outside of the outer wall surface of the house 200. In the present embodiment, a configuration is adopted in which the indoor air taken in from the air inlet 40 of each room is collected in one place by the exhaust duct 44 and then passed through the heat exchange ventilation fan 42. In the exhaust duct 44, a room air temperature sensor and a room air humidity sensor (each not shown) are disposed at a portion where room air gathers in one place. Measurement data measured by the indoor air temperature sensor and the indoor air temperature sensor is transmitted to the control unit 60 described later.

  An outside air introduction duct 50 for taking outdoor air into the room is disposed on the outer wall surface of the house 200. The outside air introduction duct 50 is installed so that one end side thereof is communicated with the outer surface of the outer wall surface of the house 200, and the midway portion is disposed so as to pass between the heat exchange ventilation fan 42 and the room partition 33. An outdoor air thermometer for measuring the temperature and humidity of outdoor air and an outdoor air hygrometer (each not shown) are disposed on one end side portion of the outdoor air introduction duct 50 or the outer wall surface of the house. The measurement data measured by the outdoor air thermometer and the outdoor air hygrometer is transmitted to the control unit 60.

  The outdoor air (fresh air) taken in from the outside air introduction duct 50 can exchange heat (recover heat) with the air exhausted from each room inside the heat exchange ventilation fan 42. The other end side of the outside air introduction duct 50 communicates with the underfloor space 25. As a result, the outdoor air is heat-exchanged via the outdoor air introduction duct 50 and then supplied into the underfloor space 25.

  The heat exchange ventilation fan 42 in the present embodiment uses a fan having a total heat exchange action. Specifically, a so-called rotary heat exchanging ventilation fan 42 is used, and it includes a suction fan 42a, an exhaust fan 42b, and a rotary fan 42c. In the total heat exchange, both the temperature and humidity of the air discharged from the indoor space and the outdoor air are exchanged at the same time. More specifically, the indoor air (exhaust) exhausted by the exhaust fan 42b and the outdoor air (suction air) sucked by the suction fan 42a are alternately connected to each other so that the indoor air and the outdoor air are mutually connected. And has a mechanism for rotating the rotary fan 42c with a motor or the like, and simultaneously exchanges the temperature and humidity of the outdoor air and the indoor air.

The heat exchange by the heat exchange ventilator 42 is performed by the mutual relationship between the temperature and humidity of the outdoor air and the indoor air. When the outdoor air is cold with respect to the indoor air heated by heating as in the winter period, After the outdoor air is heated and humidified, it is introduced into the house. In addition, when the outdoor air temperature is higher than the room air cooled by cooling as in the summer period, the outdoor air is cooled and dehumidified before being introduced into the house.
In the present embodiment, the operation of the heat exchange ventilation fan 42 is controlled by the control unit 60.

  The control unit 60 is for controlling the operation of the suction fan 42a, the discharge fan 42b, and the rotary fan 42c of the heat exchange ventilation fan 42. After receiving the measurement data of the indoor air thermometer and the indoor air hygrometer and the measurement data of the outdoor thermometer and the outdoor hygrometer, the control unit 60 can display each measurement data on a display unit (not shown). Is provided. In addition, the control unit 60 uses the measurement data of the indoor air thermometer and the indoor air hygrometer and the measurement data of the outdoor thermometer and the outdoor hygrometer, and the suction fan 42a, the exhaust fan 42b, and the rotary fan 42c of the heat exchange ventilation fan 42. A control program for controlling the operation is preinstalled in a storage means (not shown). Various setting conditions (for example, a temperature condition and a humidity condition) in the control program are not constrained by a preset setting condition, and the setting condition may be arbitrarily changed. In this case, the control unit 60 may be provided with setting condition input means (not shown) so that the setting conditions input from the setting condition input means can be reflected in the control program.

In the present embodiment, since the purpose is to provide a ventilation device at a low cost, the control unit 60 has a temperature difference between the measured temperature of the outdoor air thermometer and the measured temperature of the indoor air thermometer greater than or equal to a predetermined temperature difference. In this case, control is performed to operate all of the suction fan 42a, the exhaust fan 42b, and the rotary fan 42c. In addition, when the temperature difference between the measured temperature of the outdoor air thermometer and the measured temperature of the indoor air thermometer becomes less than a predetermined temperature difference, control is performed to operate only the exhaust fan 42b.
Thus, by appropriately changing the operating state of the ventilator 100 in accordance with the temperature difference between the outdoor air and the indoor air, unnecessary power energy consumption can be prevented, and the energy-saving ventilator 100 can be obtained. This is preferable because it becomes possible.

  As described above, the house 200 according to the present embodiment is configured to take outdoor air into the house, and exchange the heat between the indoor air and the outdoor air to exhaust the air from the house. As for this air flow, the outdoor air taken in from the outside air introduction duct 50 by the suction fan 42a and the indoor air discharged from each room of the house 200 by the exhaust fan 42b are totally exchanged by the rotary fan 42c. After that, the air is guided into the underfloor space 25 through the outside air introduction duct 50. The outdoor air is released in the underfloor space 25 and is stored in the underfloor space 25, and then rises from the underfloor toward each room. The air released into the underfloor space 25 is heated in the winter by the heat storage action or humidity adjustment action of the foundation concrete part 20 and is cooled in the summer and then supplied to each room after being cooled. Accordingly, outdoor air (fresh air) adjusted to a more comfortable state can be supplied.

In this way, in summer and winter when the temperature difference and humidity difference between the outdoor air and the indoor air are large, by operating all the fans of the heat exchange ventilation fan 42 that is a heat exchanger, Since the difference in conditions (temperature difference and humidity difference) can be reduced, comfort and economy are favorable.
Further, when the temperature difference or humidity difference between the outdoor air and the indoor air is not so large, such as in spring or autumn, all of the suction fan 42a, exhaust fan 42b, and rotary fan 42c of the heat exchange ventilation fan 42 are operated. If the total heat exchange between the outdoor air and the room air is performed, it becomes uneconomical. Therefore, the operation of the suction fan 42a and the operation of the rotary fan 42c are stopped, and only the exhaust fan 42b is operated. Even such a ventilation method is preferable because outdoor air is heat-exchanged using natural energy in the underfloor space 25, so that comfort is maintained and economical ventilation is possible.

  As described above, the residential ventilation apparatus 100 according to the present embodiment can obtain favorable ventilation and indoor environment throughout the house throughout the season. In addition, the indoor air conditioning effect also works effectively, and the running cost for air conditioning can be effectively reduced.

(Second Embodiment)
FIG. 2 is an explanatory view showing a second embodiment of the residential ventilation apparatus according to the present invention. In the present embodiment, the same components as those in the first embodiment are denoted by the same reference numerals as those in the first embodiment, and detailed description thereof is omitted.
Even if the operation of the suction fan 42a and the rotary fan 42c is stopped and only the discharge fan 42b is operated, the air in the house can be replaced, but in the intake of outdoor air, various intake resistances, There may be cases where sufficient outdoor air cannot be obtained. Therefore, in the present embodiment, an outdoor air intake part 70 is connected to the bottom surface of the foundation concrete part 20 so that outdoor air taken in from the outside of the house passes through the ground and is released to the underfloor space 25. Yes. The air intake side end of the outdoor air intake unit 70 is bent downward so that rain and dust do not enter. In addition, it is preferable to dispose a filter member such as a dustproof filter.

  The outdoor air intake section 70 can take in a sufficient amount of outdoor air even when only the exhaust fan 42b is operating. Moreover, since the outdoor air taken in from the outdoor air taking-in portion 70 passes through the ground and then is discharged into the underfloor space 25, the temperature is appropriately adjusted so as to be constant throughout the year. It is.

As mentioned above, although the ventilation apparatus of the house concerning this invention has been demonstrated in detail based on embodiment, this invention is not limited to the above embodiment, In the range which does not deviate from the main point of invention. Even if various changes are made, it goes without saying that they belong to the technical scope of the present invention.
For example, a communication hole (not shown) for communicating the underfloor space 25 and the outdoor space may be formed in the standing wall portion 22 of the foundation concrete portion 20, and this communication hole may be used as the outdoor air intake unit 70.

  In addition, the conditions for stopping the operation of the suction fan 42a and the operation of the rotary fan 42c and operating only the exhaust fan 42b are to measure the temperature and humidity of the indoor air and the temperature and humidity of the outdoor air, respectively. The value is transmitted to the control unit 60, and the control unit 60 controls the operation status of the suction fan 42a and the rotary fan 42c based on the result of calculating the temperature difference and the humidity difference. Temperature and humidity measurements are not necessary. A simple changeover switch for switching the operation states of the suction fan 42a, the exhaust fan 42b, and the rotary fan 42c is provided separately in the control unit 60 or the room so that the operation state can be arbitrarily set according to the user's intention. Of course, it is good also as a form. In addition, power energy that is provided in advance and that is consumed by an air conditioner such as an air conditioner to eliminate the temperature difference between the outdoor air temperature and the indoor air temperature and the temperature difference between the outdoor air temperature and the indoor air temperature, according to the operating state of the ventilator 100. On the basis of the correlation data, it is possible to control so as to switch the operation state of the ventilator 100 (the heat exchanging ventilator 42) based on the judgment of the user.

Moreover, although the form using the heat exchange ventilation fan 42 which used the rotary fan 42c as a heat exchanger is demonstrated, a heat exchanger is not limited to the above form, Other well-known heat exchangers are used. Needless to say, it can be appropriately selected according to the situation.
In addition to the embodiments described above, the above embodiments may be freely combined.

It is explanatory drawing which shows 1st Embodiment of the ventilation apparatus for houses which concerns on this invention. It is explanatory drawing which shows 2nd Embodiment of the ventilation apparatus for houses which concerns on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10,10a Heat insulating material 12 External ventilation layer 14 External wall body 20 Foundation concrete part 22 Standing wall part 25 Underfloor space 30 Floor part 32 Inner wall part 34 Air flow path 36 Opening part 38 Ceiling 40 Exhaust port 42 Heat exchange ventilation fan 42a Suction fan 42b Exhaust fan 42c Rotary fan 44 Exhaust duct 50 Outside air introduction duct 60 Control unit 70 Outdoor air intake unit 100 Ventilator 200 Housing

Claims (5)

A suction fan for taking outdoor air into the indoor space, a discharge fan for discharging the indoor air to the outside, and a heat exchanger for relaxing the temperature difference between the outdoor air and the indoor air,
The residential ventilation device, wherein the suction fan, the exhaust fan, and the heat exchanger are set to be able to independently switch on / off operations. Switching the on / off operation of the suction fan, the exhaust fan, and the heat exchanger is as follows:
When the temperature difference between the outdoor air and the room air is equal to or greater than a predetermined temperature difference, the heat exchanger, the suction fan, and the exhaust fan are all operated.
2. The residential ventilator according to claim 1, wherein only the exhaust fan is operated when the temperature difference between the outdoor air and the indoor air is less than a predetermined temperature difference.   3. The residential ventilator according to claim 1, wherein an outdoor air intake section is provided separately from the suction fan.   The outdoor ventilator according to claim 3, wherein the outdoor air taken in from the outdoor air take-in section is supplied to the indoor space after being supplied to the underfloor space of the house.   The residential ventilator according to claim 3 or 4, wherein the outdoor air intake section passes through the ground.

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