JP2008281252A - Ventilation system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a ventilation system capable of efficiently utilizing heat energy in a building, reducing installation costs and running costs, and cleaning the air in the building. <P>SOLUTION: This ventilation system 1 has an air sucking means 2 for sucking out the air in a living space k to the external, a circulating means 3 for sending the air sucked out by the air sucking means 2 into a dwelling house T again as the circulated air, an air supply means 4 for supplying the outside air of the dwelling house, a mixing means 5 for mixing the circulated air and the outside air, a cleaning means 6 for cleaning the air mixed by the mixing means 5, and a supply means 7 comprising an air blower 7a for supplying the air cleaned by the cleaning means 6 to the living space k, and the air sucking means 2 sucks the air in an air-conditioned space of which a temperature is conditioned by an air conditioner P, of the living space k. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a ventilation system for a building, particularly a detached house.

Conventionally, ventilation of buildings such as detached houses has been done by providing an air supply port for taking in outside air and an exhaust port for discharging the air in the building to the outside, and circulating the air in the building by sending wind with a blower etc. It was done.
However, according to such a configuration, for example, in winter, cold air is taken into the building as it is for ventilation, so even if the building is warmed by a heating device or the like, the temperature in the building is lowered and the thermal energy efficiency is deteriorated. There was a problem.

Therefore, for example, as in the invention according to Patent Document 1, a technique is known in which a heat exchanger is provided in a part of a duct and heat is exchanged between outside air and air in the building, and then air is sent into the building. According to such a configuration, since cold air does not directly enter the building even in winter, ventilation with good thermal energy efficiency could be performed.
Japanese Unexamined Patent Publication No. 2000-74446 (FIG. 1)

However, when the heat exchanger is installed in a part of the duct, there is a problem that the installation cost and the running cost increase. Further, since the outside air is taken into the building without being cleaned, there is a problem that the air supplied into the building is dirty.
From such a point of view, the present invention provides a ventilation system that can efficiently use thermal energy in a building, reduce installation costs and running costs, take in clean outside air, and clean the air in the building. Is an issue.

  In order to solve this problem, the present invention provides a ventilation system for a building having a living space, wherein the building uses an air intake means for taking in air in the living space, and the air sucked out by the air intake means is used as circulating air. A circulation means for circulating inside, an air supply means for supplying outside air of the building, a mixing means for mixing the circulating air and the outside air, and a cleaning means for purifying the air mixed by the mixing means, Supply means provided with a blower for supplying air cleaned by the cleaning means to the living space, and the air intake means is air in the air-conditioned space that is temperature-controlled by the air conditioner in the living space. It is characterized by inhaling.

According to such a configuration, it is possible to ventilate air that is a mixture of outside air taken in by the air supply means and circulating air whose temperature has been adjusted, into the building. That is, even if a heat exchanger is not used, ventilation can be performed by efficiently using the heat energy in the building by taking air warmed or cooled in the building into the living space again.
Further, after the circulating air and the outside air are mixed, the air is purified by the cleaning means, so that clean air from which dust, pollen, mite carcasses, other outside air and indoor impurities are removed can be supplied. In addition, since the heat exchanger is not provided and the configuration is simple, the installation cost and the running cost can be kept low.
Here, the air taken into the building again by the intake means and the circulation means is hereinafter also referred to as circulation air. Hereinafter, the air taken in by the air supply means is also referred to as outside air.

  The mixing means according to the present invention includes a circulating air damper that adjusts the flow rate of the circulating air, and an outside air damper that adjusts the flow rate of the outside air, and the circulating air damper and the outside air damper. And a control device for controlling the mixing ratio of the circulating air and the outside air.

  According to this configuration, by controlling the air supply damper and the circulating air damper, ventilation can be performed while adjusting the mixing ratio of the circulating air and the outside air mixed by the mixing means. That is, ventilation can be performed while adjusting the temperature of the air taken into the living space.

  Further, the building according to the present invention has a lower floor that forms an underfloor space, a living part that has the living space, and a roof that forms a ceiling space of the living part, and the lower floor is The air supply means, the mixing means, the cleaning means, and the supply means, the living part is provided with a building ventilation means for ventilating the air in the living space to the ceiling space, and the roof part is the A roof exhaust means for exhausting the air in the space behind the ceiling to the outside of the building is provided, and the control device includes an in-building temperature sensor for detecting the temperature in the living space and an outside temperature sensor for detecting the temperature of the building outside air. When the temperature difference between the temperature detected by the temperature sensor inside the building and the temperature detected by the temperature sensor outside the building reaches a preset first set value, the fan is operated. Characterized in that it stop.

According to such a configuration, for example, in winter, when the temperature of the living space is 25 ° C., the temperature outside the building is 10 ° C., and the temperature difference between the inside and outside of the building is about 15 ° C., warm air inside the building naturally flows upward. Therefore, an updraft is generated in the building. Thereby, even if the operation of the blower is stopped, the air in the building is exhausted to the outside of the building through the ventilation means in the building and the roof exhaust means, and the atmospheric pressure in the building is lowered. For this reason, a force to return the atmospheric pressure to the building works, and outside air is supplied from the lower part of the floor, so that the building can be ventilated. That is, according to such a configuration, natural ventilation and mechanical ventilation can be used properly according to the temperature difference between the living space and the outside air, so that the energy saving effect can be enhanced.
The first set value is a value in which a temperature difference between the inside and outside of the building is set, and is preferably set to a temperature difference or the like at which an updraft occurs in the building.

  Further, the control device according to the present invention, after stopping the operation of the blower, the temperature difference between the temperature of the living space detected by the temperature sensor in the building and the outside of the building detected by the temperature sensor outside the building However, when the second set value is set in advance, the operation of the blower is resumed.

  According to this configuration, when the difference between the temperature outside the building and the temperature of the living space is reduced by performing natural ventilation and directly taking in only outside air, the blower is restarted. Thereby, it can ventilate, keeping the temperature in a building in a fixed range.

  According to the ventilation system which concerns on this invention, while using the thermal energy in a building efficiently, installation cost and running cost can be suppressed, and the air in a building can be purified.

The best embodiment of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a schematic configuration diagram illustrating a ventilation system according to the present embodiment. FIG. 2 is a side view showing mixing means of the ventilation system according to the present embodiment. FIG. 3 is a configuration diagram illustrating the control device of the ventilation system according to the present embodiment. FIG. 4 is a schematic configuration diagram showing natural ventilation means according to the present embodiment.

  As shown in FIG. 1, the ventilation system 1 is used in a highly airtight house in which the inside of a building is formed to be airtight with respect to the outside of the building by, for example, a two-by-four method. The house T includes a lower floor U having an underfloor space u formed by the fabric foundation R, a living part K having a living space k where people live, and a roof Y having a ceiling space y of the living space k, It has. The living space k has a living room S1, a living room S2, a living room S3, and a living room M, and has an atrium space D provided with a stairs or the like not shown in the center. The atrium space D is formed to communicate from the floor on the first floor to the ceiling on the second floor.

  As shown in FIG. 1, the ventilation system 1 includes a living room S1 and a living room M that are air-conditioned spaces, an intake means 2 that sucks air in the air-conditioned space, and a mixing means that mixes circulating air sucked out by the intake means 2 Circulating means 3 leading to 5, air supply means 4 for supplying outside air, mixing means 5 for mixing the circulating air and the outside air, cleaning means 6 for cleaning the air mixed by the mixing means 5, and cleaning Supply means 7 for supplying the air to each room of the building. The mixing unit 5 and the supply unit 7 are electrically connected to the control device 10.

  As shown in FIG. 1, the air intake means 2 intakes air in the living room S <b> 1 and the living room M, which are air-conditioned spaces. The air-conditioned space refers to a space in the living space k that is temperature-controlled by a known air conditioner, heater, or the like. In the present embodiment, the living room S1 and the living room M are provided with air conditioners P1 and P2 capable of adjusting the indoor temperature. The temperature of the living room S1 and the living room M is preferably set to a temperature (18 ° C. to 24 ° C.) at which a person can live comfortably, for example.

  In the present embodiment, the air intake means 2 includes a first air inlet 2a and a second air inlet 2b that are respectively installed on the ceiling t1 of the living room S1 and the wall t2 of the living room M. As the first intake port 2a and the second intake port 2b, known intake ports are used. The first intake port 2a is connected to the first circulation duct 3a, and the second intake port 2b is connected to the second circulation duct 3b.

  The circulation means 3 guides the air sucked out by the intake means 2 to the mixing means 5 as circulating air. In the present embodiment, the circulation means 3 uses a duct connecting the intake means 2 and the mixing means 5. The circulation unit 3 includes a first circulation duct 3 a that connects the first intake port 2 a and the mixing unit 5, and a second circulation duct 3 b that connects the second intake port 2 b and the mixing unit 5. In the present embodiment, the first circulation duct 3a and the second circulation duct 3b are formed so as to be exposed to the outside of the house T. However, the first circulation duct 3a and the second circulation duct 3b are not limited to this, and the ceiling back space y or the ceiling portion t1. Further, it may be formed so as not to be exposed to the outside of the house T by being arranged inside the wall part t2 and the floor part t3.

  The air supply means 4 is for taking air outside the house T into the house T. In the present embodiment, the air supply means 4 includes an air supply port 4a installed on the side surface of the fabric foundation R, a hood 4b formed around the air supply port 4a and protecting the air supply port 4a from wind and rain, An air supply duct 4 c that connects the air supply port 4 a and the mixing means 5 is provided. As the air supply port 4a, the hood 4b, and the air supply duct 4c, for example, known ones may be used.

The mixing means 5 mixes circulating air and outside air. As shown in FIG. 2, the mixing means 5 uses a first branch chamber 5a branched into three branches in this embodiment. The first branch chamber 5a includes three inlet portions including a first circulating air inlet portion 51, a second circulating air inlet portion 52, and a supply air inlet portion 53, and one outlet portion 54 provided continuously from these inlet portions. And have.
The first circulating air inlet 51 and the second circulating air inlet 52 are connected to the first circulating duct 3a and the second circulating duct 3b, respectively, and the air supply inlet 53 is connected to the air supply duct 4c. Yes.

Further, a damper 55 formed so as to be controllable by the control device 10 is installed in the first circulating air inlet portion 51, the second circulating air inlet portion 52, and the supply air inlet portion 53. The damper 55 includes a plate-like body 56 and a motor 57 installed at the center of the plate-like body 56, and the plate-like body 56 is formed to be rotatable around the motor 57. That is, the damper 55 can adjust the inflow amount of the circulating air or the outside air by determining the opening angle of the plate-like body 56. A first circulating air damper 55a, a second circulating air damper 55b, and an air supply damper 55c are installed in the first circulating air inlet 51, the second circulating air inlet 52, and the supply air inlet 53, respectively. Yes.
The damper 55 may be provided with either one of the circulating air damper (the first circulating air damper 55a and the second circulating air damper 55b) or the air supply damper 55c.

  As shown in FIG. 1, the cleaning means 6 removes impurities such as dust, pollen, cigarette smoke, and mite carcasses from the air mixed by the mixing means 5 and cleans the air. In this embodiment, the cleaning means 6 includes a filter portion 6a on which a filter is mounted, and connecting ducts 6b and 6c extending from the filter portion 6a toward both sides. The connecting duct 6b is connected to the outlet 54 of the first branch chamber 5a, and the connecting duct 6c is connected to the blower 7a. For example, a known filter may be used as the filter.

  The supply means 7 supplies the air cleaned by the cleaning means 6 to the living space k. In this embodiment, the supply means 7 includes a blower 7a, a supply duct 7b for supplying air to the living space k, a second branch chamber 7c provided in the middle of the supply duct 7b, and an inlet of each room. And a building ventilation inlet 7d.

The blower 7a serves as power for sending air into the living space k. In the present embodiment, the blower 7a uses a known blower, and is formed so that activation, stop, and the amount of blown air can be controlled by the control device 10 described later. The 2nd branch chamber 7c is a well-known branch chamber, and distributes the air sent from the air blower 7a. The in-building ventilation inlet 7d is installed to open upward in the living room M and the floor t3 of the living room S3. A well-known air inlet is used for the ventilation inlet 7d in the building.
The building ventilation inlet 7d may be installed on the wall surface or ceiling surface by inserting a duct through the ceiling portion t1, the wall portion t2, and the ceiling portion t3. The second branch chamber 7c is not necessarily provided, and a duct may be directly communicated for each room.

  In addition, a living room ventilation port 31 and a living room ventilation port 32 that are open to the atrium space D are respectively installed in the wall portion t2 of the living room S3 and the wall portion t2 of the living room M. In addition, room air inlets 33 and 34 that are formed to open into the atrium space D are respectively installed in the lower part of the wall part t2 of the living room S1 and the wall part t2 of the living room S2.

In addition, in the ceiling part t1 of the living room S1, the ceiling part t1 of the living room S2, and the ceiling part t1 of the atrium space D, an in-building ventilation means 8 that is open to the ceiling back space y is formed. The building ventilation means 8 ventilates the air in the living space k to the ceiling space y. The building ventilation means 8 has a building ventilation port 8 (8a, 8b) in this embodiment. For example, known ventilation openings are used as the building ventilation openings 8a and 8b.
Further, the roof portion Y is formed with a roof portion exhaust means 30 that exhausts the air in the ceiling space y to the outside of the house T. The roof part exhaust means 30 is formed with a roof part exhaust port 30a in the present embodiment. The roof part exhaust port 30a uses the well-known exhaust port, for example.

  In other words, according to the above-described configuration, outside air is taken in from the air supply means 4 without passing through the air supply means 4, passes through the cleaning means 6 and the supply means 7, and is sent to each space of the living space k to ventilate the building. Natural ventilation can also be provided by means 8 and roof exhaust means 30.

  As shown in FIGS. 1 and 3, the control device 10 is electrically connected to the blower 7 a, the first branch chamber 5 a, the controller 21, and the temperature sensor 22. The control device 10 is constituted by a microcomputer or the like, and is programmed so that the air volume adjusting means 11a, the mixing ratio switching means 11b, the natural ventilation means 11c, and the mechanical ventilation resuming means 11d are operated.

  The controller 21 is a part that transmits to the control device 10 a signal for executing the power supply of the ventilation system 1, the air volume adjusting means 11 a, the mixing ratio switching means 11 b, the natural ventilation means 11 c and the mechanical ventilation resuming means 11 d. The controller 21 is built in an operation panel (not shown) having a liquid crystal screen. The operation panel is formed (not shown) so that each operation mode of the air volume adjusting means 11a, the mixture ratio switching means 11b, the natural ventilation means 11c, and the mechanical ventilation resuming means 11d can be selected.

The temperature sensor 22 includes an in-building temperature sensor 22a and an outside temperature sensor 22b.
The in-building temperature sensor 22a detects the temperature of a space other than the air-conditioned space, and is installed in the atrium space D of the living space k in the present embodiment. The building outside temperature sensor 22b is a sensor that detects the temperature of the outside air of the house T or the temperature of the outside air taken into the house T. Although not specifically illustrated, for example, the outside of the wall t2 or the air supply duct 4c. Is installed. Each temperature is formed so as to be displayed on the liquid crystal screen of the operation panel.

The air volume adjusting means 11a increases or decreases the rotational speed of the blower 7a to adjust the air flow. The air volume adjusting means 11a is formed so that, for example, two types of modes, a “weak wind mode” with a small air volume and a “strong wind mode” with a large air volume can be selected. When one of the modes is selected, a signal is sent to the blower 7a to operate.
The air volume adjusting means 11 may be formed so that it can be adjusted to one type or three or more types.

The mixing ratio switching means 11b can change the mixing ratio of the circulating air flow rate and the outside air flow rate by changing the opening angle of the damper 55 provided in the first branch chamber 5a. The mixing ratio switching means 11b has two types of modes formed on the operation panel, for example, a “circulation air increasing mode” for increasing the flow rate ratio of circulating air and a “circulation air decreasing mode” for decreasing the flow rate ratio of circulating air. Yes. By selecting one of the modes, a signal is transmitted to each motor 57, and the opening angle of the damper 55 is determined. In the present embodiment, the angle of the damper 55 is normally formed such that the mixing ratio of the circulating air flow rate and the outside air flow rate is 3: 7.
When the “circulation air reduction mode” is selected, the opening angle of the damper 55 is preferably adjusted so that the mixing ratio of the circulation air and the outside air is about 2: 8. In addition, when the “circulation air increase mode” is selected, it is preferable that the opening angle of the damper 55 is adjusted so that the mixing ratio of the circulation air and the outside air is about 4: 6.

  The natural ventilation means 11c automatically stops the operation of the blower 7a when the temperature difference between the in-building temperature sensor 22a and the outside temperature sensor 22b reaches a preset first set value. Here, the first set value is a set temperature difference between inside and outside the building. The natural ventilation means 11c has a “natural ventilation mode” formed on the operation panel, and after selecting the mode, the temperature difference detected by the building internal temperature sensor 22a and the external building temperature sensor 22b is the first set value. Then, a signal is transmitted to the blower 7a so that the operation of the blower 7a is stopped. The user can set the first set value as appropriate and stop the operation of the blower 7a when a desired temperature difference is reached.

  Here, in winter, when the temperature inside the house T rises and a certain difference occurs between the temperature inside the house T and the temperature outside the house T, the air warmed inside the house T flows upward. Ascending air current is generated. Since the house T includes the atrium space D communicated from the first floor to the ceiling of the second floor, and the roof portion Y includes the roof exhaust port 30a, the warmed air rises and the roof exhaust port 30a. Exhausted from. Then, since the pressure in the house T falls, the force which tries to return the pressure inside the house T returns, and new outside air is supplied from the inlet 4a.

Therefore, it is preferable that the first set value is set such that the temperature at which the upward airflow is generated in the house T, that is, the difference between the temperature inside the house T and the temperature outside the house T is about 15 ° C. or more.
Thereby, since the natural ventilation means 11c can circulate and ventilate the air in the house T naturally without operating the blower 7a, energy saving can be achieved.

  The mechanical ventilation resumption means 11d automatically operates the blower 7a when the temperature difference between the temperature sensor 22a in the building and the temperature sensor 22b outside the building reaches the second preset value set in advance after performing the natural ventilation means 11c. Will resume. The mechanical ventilation resumption means 11d is configured such that, after the “mechanical ventilation resumption mode” formed on the operation panel is selected, the temperature difference detected by the in-building temperature sensor 22a and the outside temperature sensor 22b becomes the second set value. A signal is transmitted to the blower 7a so that the blower 7a operates.

That is, when the blower 7a is stopped by the natural ventilation means 11c, for example, in winter, only the cool air enters the living space k and ventilation is performed, so that the temperatures of the living room M and the living room S3 are lowered.
However, when the temperature difference between the inside and outside of the house T reaches the second set value, the operation of the blower 7a is resumed and ventilation can be performed by taking in warm air in the air-conditioned space again. Thereby, the temperature of the living space k can be kept constant while ventilating the living space k.
The second set value is used to set a temperature difference detected by the building temperature sensor 22a and the building outside temperature sensor 22b. That is, the user can set the second temperature and resume the operation of the blower 7a when a desired temperature difference is reached.

  Although both the first set value and the second set value set the temperature difference, the temperature may be set to stop and operate the blower 7a.

Next, the effect of the ventilation system 1 as described above will be described assuming that the temperature inside the house T and the temperature outside the house T are both 5 ° C. at the beginning.
First, the user presses the power supply of the operation panel to operate the blower 7a. Further, at least one of the air conditioners P1 and P2 in the living room S1 and the living room M is operated to increase the temperature in the living room S1 or the living room M. The living room 1 and the living room M are assumed to be temperature-controlled at about 20 ° C.

When the air blower 7a is operated, the force sucked into the first air inlet 2a and the second air inlet 2b is applied, so that the warmed air in the living room S1 or the living room M is sucked out of the room. The sucked air flows into the first branch chamber 5a as the circulating air through the first circulation duct 3a and the second circulation duct 3b, respectively. On the other hand, outside air flows from the air supply port 4a and flows into the first branch chamber 5a, and the circulating air and the outside air are mixed.
The mixed air is purified through the filter unit 6a and then supplied to the living room S3 and the living room M by the blower 7a through the supply duct 7b and the building ventilation inlet 7d.

  Thus, after the air warmed by living room S1 or living room S2 is once discharged | emitted out of living room S1 and living room M, the supplied air takes in the living space k again and ventilates the air. Accordingly, since the circulating air (temperature 20 ° C.) heated in the living room S1 or the living room M is mixed and supplied to the living space k rather than taking in only cold outside air (temperature 5 ° C.) directly, the temperature of the living space k Ventilation can be performed while preventing a decrease in the temperature. That is, even without using a heat exchanger, the heat energy obtained in the house T can be circulated to efficiently perform ventilation.

  Further, the air flowing into the living room M and the living room S3 is ventilated outside from the living room ventilation port 31 and the living room ventilation port 32, and flows into the living rooms S1 and S2 through the ventilating space D and the living room air supply ports 33 and 34. And you can ventilate by circulating air.

<Mixing ratio switching means>
Next, the effect of the mixing ratio switching unit 11b will be specifically described. The mixing ratio switching means 11b can adjust the temperature in the living space k while ventilating by adjusting the mixing ratio of the circulating air flow rate and the outside air flow rate.
That is, when it is desired to lower the temperature of the living space k, a large amount of outside air (for example, about 5 ° C.) can be taken in and the temperature of the living room M can be lowered while ventilating. In this case, by selecting the “circulation air reduction mode” on the operation panel, the opening angle of the first circulation air damper 55a and the second circulation air damper 55b is reduced, and the first circulation air inlet 51 and The inflow amount of circulating air at the second circulating air inlet 52 is suppressed. Thereby, the mixing ratio of outside air increases and the temperature of the supplied air can be lowered.

  On the other hand, when it is desired to increase the temperature of the living space k, a large amount of circulating air (for example, about 25 ° C.) can be taken in and the temperature of the living room M can be increased while ventilating. In this case, by selecting the “circulation air increasing mode”, the opening angle of the air supply damper 55c is reduced, and the opening angles of the first circulation air damper 55a and the second circulation air damper 55b are opened. The Thereby, since the inflow amount of circulating air increases, it can circulate much warm air. Thereby, the thermal energy obtained in the building T can be used effectively.

<Natural ventilation means / Mechanical ventilation restart means>
Next, the effect of the natural ventilation means 11c and the mechanical ventilation resumption means 11d will be specifically described. As shown in FIG. 4, the natural ventilation means 11 c performs natural ventilation by using an updraft J generated in the house T.
First, the “natural ventilation mode” is selected, and a first set value (temperature difference between inside and outside the building) for stopping the operation of the blower 7a is set to 15 ° C., for example. Further, the “mechanical ventilation resumption mode” is selected, and a second set value (temperature difference between inside and outside the building) for resuming the operation of the blower 7a is set to 11 ° C., for example.

Then, when the ventilation system 1 is activated, for example, when the temperature outside the house T is 5 ° C. and the temperature in the atrium space D (in-building temperature sensor 22a) is 20 ° C., the temperature difference between the two is the first set value of 15 Since it becomes 0 degreeC, the action | operation of the air blower 7a stops. At this time, as shown in FIG. 4, ascending airflow J is generated in the house T, the air in the living space k is the living room ventilation openings 31 formed in the living rooms S1 to S3, the living room M, and the atrium space D, The air flows upward from the living room ventilation port 32, the room air supply ports 33 and 34, and the ventilation ports 8a and 8b in the building, and is exhausted from the roof portion exhaust port 30a to the outside of the house T.
Thereby, since the atmospheric pressure inside the house T is lowered, a force for returning the pressure in the house T works, and outside air flows in from the air supply port 4a formed in the lower floor U. The inflowing outside air flows into the filter unit 6a and the blower 7a, flows into the living room S3 and the living room M from the in-building ventilation inlet 7d, and circulates and ventilates in the same manner on the updraft J.

  However, if natural ventilation is continued, only the outside air (temperature of about 5 ° C.) continues to enter the living room S3 and the living room M, so the temperature of each space also continues to decrease. When the temperature in the atrium space D (in-building temperature sensor 22a) reaches 16 ° C., the temperature difference between the temperature outside the house T and the temperature in the atrium space D becomes 11 ° C., which is the second set value. Resume. Thereby, since the circulating air having a warm temperature is mixed again and ventilated, it is possible to prevent the temperature of the living space k from decreasing and to ventilate while keeping the temperature within a certain range.

Next, as for the effects of the ventilation system 1, a case is assumed in which the temperature inside the house T and the temperature outside the house T are both 30 ° C. at the beginning.
First, the user presses the power supply of the operation panel to operate the blower 7a. Further, at least one of the air conditioners P1 and P2 in the living room S1 and the living room M is operated to lower the temperature in the living room S1 or the living room M. The living room 1 and the living room M are temperature-controlled at about 23 ° C. Then, in the first branch chamber 5a, the circulating air of 23 ° C. and the outside air of 30 ° C. are mixed and supplied to the living space k.

  Thereby, air (temperature 23 ° C.) cooled in the living room S 1 or the living room M can be mixed with the outside air (temperature 30 ° C.) and supplied to the living space k, so ventilation is performed while suppressing an increase in the temperature of the living space k. can do. That is, even without using a heat exchanger, the heat energy obtained in the house T can be circulated to efficiently perform ventilation.

  As described above, according to the ventilation system 1, it is possible to ventilate the house T by taking in air that is a mixture of outside air and circulating air whose temperature has been adjusted. That is, even if a heat exchanger is not used, ventilation can be performed by efficiently using the heat energy in the building by taking air warmed or cooled in the house T into the living space k again. .

  Here, in the living space k, for example, when there is a large space such as the living room M or the atrium space D, there is a problem that the thermal efficiency of the space is poor. However, according to the ventilation system 1, thermal energy can be effectively utilized by supplying the circulating air of the air-conditioned space to such a large space. Moreover, since the indoor ventilation inlet 7d is provided in the floor t3, when warm air is supplied, it can be warmed from the feet.

Further, since the air is purified by the filter unit 6a after the outside air and the circulating air are mixed, clean air from which dust, pollen, mite carcasses, and other impurities are removed can be supplied.
Here, when removing contaminants in the living space k, it is desirable to increase the ventilation rate as much as possible. However, when the temperature difference between the inside and outside of the house T is large, such as midwinter or midsummer, the heat energy of the house T is lost as the ventilation rate is increased to increase the cleanliness. However, according to the ventilation system 1, thermal energy loss can be suppressed even if ventilation is increased.

Moreover, in this embodiment, since the temperature sensor 22 is installed in the atrium space D,
The natural ventilation means 11c can be performed by accurately detecting the temperature at which the updraft is generated in the atrium space D.
In addition, since the heat exchanger is not provided and the configuration is simple, the installation cost can be reduced by about 50% and the running cost can be reduced by about 60%.

Although the embodiments of the present invention have been described above, design changes can be made as appropriate without departing from the spirit of the present invention.
For example, in the present embodiment, the air conditioners P1 and P2 are installed in the living room S1 and the living room M, but the air conditioners are also installed in the living room S2, the living room S3, and the atrium space D, and the living room S2, the living room S3, and the atrium space. The intake means 2 and the circulation means 3 may also be provided in D. Thereby, it can ventilate using the circulating air of all the spaces of the living space k.

  In the present embodiment, the control device 10 is used to control the opening angle of the damper 55 to adjust the mixing ratio of the circulating air and the outside air. However, the control device 10 may not be provided. That is, after the opening angle of the damper 55 is fixed, the flow rates of the circulating air and the outside air may be determined by calculation, and the mixing ratio of the circulating air and the outside air may be adjusted. Thereby, a ventilation system can be installed more simply and at low cost.

  Further, in the present embodiment, the building ventilation inlet 7d is installed in the living room S3 and the living room M, but a duct is provided in the ceiling part t1 and the wall part t2, and is installed in the living room S1 and the living room S2. Also good. Moreover, the installation location and the number of installation of the ventilation inlet 7d in a building are not limited to this embodiment, For example, you may install two or more in the ceiling part t1 and the wall part t2. Further, in the present embodiment, the circulation means 3 connects the intake means 2a, 2b and the mixing means 5 individually with ducts, but they may be joined together in the middle.

Further, in the present embodiment, the damper 55 is formed so that the air flow rate can be adjusted by the opening angle of the plate-like body 56, but the plate-like body may be fixed and the flow rate adjusted by the diameter of the duct. .
Moreover, although the mixing means 5, the cleaning means 6, and the supply means 7 were installed in the lower floor U in this embodiment, you may install in the roof part Y.

It is a schematic structure figure showing a ventilation system concerning this embodiment. It is the side view which showed the mixing means of the ventilation system which concerns on this embodiment. It is the chart figure which showed the control apparatus of the ventilation system which concerns on this embodiment. It is the schematic block diagram which showed the natural ventilation means concerning this embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Ventilation system 2 Air intake means 3 Circulation means 4 Air supply means 5 Mixing means 6 Cleaning means 7 Supply means 8 Ventilation means in a building 10 Controller 11b Mixing ratio switching means 11c Natural ventilation means 11d Mechanical ventilation resumption means 22 Temperature sensor 55a 1st Damper for circulating air 55b Damper for second circulating air 55c Damper for air supply D Dwell space K Residential section k Residential space U Under floor u Under floor space Y Roof section y Ceiling space

Claims (4)

A ventilation system for a building having a living space,
Air intake means for inhaling air in the living space;
Circulating means for circulating the air sucked out by the intake means into the building as circulating air;
An air supply means for supplying outside air of the building;
Mixing means for mixing the circulating air and the outside air;
A cleaning means for cleaning the air mixed by the mixing means;
A supply means having a blower for supplying air cleaned by the cleaning means to the living space;
The ventilation system, wherein the intake means sucks air in an air-conditioned space whose temperature is adjusted by an air conditioner in the living space. The mixing means includes
A circulating air damper for adjusting the flow rate of the circulating air;
An outside air damper for adjusting the flow rate of the outside air,
Operating at least one of the circulating air damper and the outside air damper;
The ventilation system according to claim 1, further comprising a control device that controls a mixing ratio of the circulating air and the outside air. The building has a lower floor that forms an underfloor space, a living part that has the living space, and a roof that forms a ceiling space of the living part,
The lower floor includes the air supply means, the mixing means, the cleaning means, and the supply means,
The living part includes a ventilation means in the building for ventilating the air in the living space to the ceiling space.
The roof portion includes a roof portion exhaust means for exhausting the air in the ceiling space outside the building,
The controller is
It is connected to a temperature sensor in the building that detects the temperature in the living space and a temperature sensor outside the building that detects the temperature of the outside air of the building,
The operation of the blower is stopped when a temperature difference between the temperature detected by the temperature sensor in the building and the temperature detected by the temperature sensor outside the building reaches a preset first set value. Item 3. The ventilation system according to item 2. The controller, after stopping the operation of the blower,
When the temperature difference between the temperature of the living space detected by the temperature sensor inside the building and the temperature outside the building detected by the temperature sensor outside the building reaches a preset second set value, the operation of the blower is resumed. The ventilation system according to claim 3.

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