JP5820245B2 - Ventilation system and building - Google Patents

Description

  The present invention relates to a ventilation system using geothermal heat and a building equipped with this ventilation system.

  Traditionally, underground heat collection pipes are buried in the ground, which is almost unaffected by the outside air temperature and maintained at a stable temperature throughout the year, and the outside air is passed through the underground heat collection pipes to exchange heat with the ground heat. The technology using geothermal heat is known and is being put into practice in the building, which is cool during the hot season such as summer and warm during the cold season such as winter.

  For example, Patent Document 1 discloses a conventional technique in which air conditioning using a heat pump compensates for air conditioning that uses geothermal heat alone.

JP 2003-35433 A

  However, in the conventional technique using geothermal heat as described in Patent Document 1 described above, the air (outside air) that has passed through the underground heat collecting pipe is more dusty than the air (outside air) that has passed through the underground heat collecting pipe. There is a problem that it has a lot of moisture and odor and does not take into account that it is not clean.

  Here, even if it is going to apply the technique using geothermal heat to a ventilation system, there exists the same problem.

  Then, an object of this invention is to provide the ventilation system which can make the air which passed the underground heat collecting pipe clean, and the building provided with this ventilation system.

  In order to achieve the above-mentioned object, the ventilation system of the present invention takes in air from the outside by a blowing means provided in the air supply air passage, supplies the air to the floor space, and exhausts the air in the floor space to the outside. A ventilation system for a building, wherein an air supply port that communicates with an underfloor space facing the above-floor space of the building is provided, and an underground heat collection pipe is provided downstream of an outdoor air intake port. In addition, a filter box having an air cleaning function is provided further downstream of the air supply path to form the air supply path.

  The air purification function of the filter box means at least one of a dustproof function, a dehumidifying function, and a deodorizing function.

  Here, the filter box may be provided in the underfloor space.

  In addition, the supply of air from the supply air passage to the above-mentioned floor space may be performed from the above-described supply port via the below-floor space without passing through the supply air duct.

  A heat exchange means may be provided between the supply air passage and the exhaust air passage.

  Furthermore, the exhaust air passage has a route in contact with the heat exchange means and a route not in contact with the heat exchange means. By switching between these routes, a mode for performing heat exchange and a mode for not performing heat exchange are provided. Should be switched automatically.

  Further, the building includes an upper floor space, and an air supply duct communicating with an upper floor air supply port provided facing the upper floor space on the upper floor is provided on the downstream side of the air supply air passage. It may be connected.

  The building of the present invention includes the above-described ventilation system of the present invention.

  Such a ventilation system of the present invention is a building ventilation system that takes in air from the outside by a blowing means provided in a supply air passage, supplies the air to the space above the floor, and exhausts the air in the space above the floor to the outside. .

  An air supply port that faces the space above the floor of the building and communicates with the underfloor space is provided, and an underground heat collection pipe is provided on the downstream side of the outdoor air intake port. Is provided with a filter box having an air cleaning function to form an air supply path.

  With this configuration, the air (outside air) that has passed through the underground heat collection pipe can be made clean, and the inside of the building can be ventilated with this clean air.

  In addition, air (outside air) is passed through this underground heat collection pipe to exchange heat with the underground heat and sent into the building, and the building is heated in the summer and other hot seasons and in the winter and other cold seasons. Air conditioning using can also be performed at the same time.

  Here, when the filter box is provided in the underfloor space, since the filter box does not occupy the above-floor space, the above-floor space can be widely used.

  In addition, when the air supply from the supply air path to the floor space is performed from the air supply port via the underfloor space, not through the air supply duct, the end of the supply air path and the air supply port Since there is no air supply duct in between, it can be carried out inexpensively and maintenance can be performed easily.

  Further, when heat exchange means is provided between the supply air passage and the exhaust air passage, the heat (hot or cold) that escapes through the exhaust air passage can be suppressed as much as possible.

  Further, the exhaust air passage has a route that contacts the heat exchange means and a route that does not contact the heat exchange means, and switching between these routes automatically switches between a mode for performing heat exchange and a mode for not performing heat exchange. In the case of switching, for example, in the building, when the air is not cooled even in the hot season such as summer, the air in the supply air channel may be cooler than the air in the exhaust air channel, When heating is not performed even in the cold season, the air in the supply air path may be warmer than the air in the exhaust air path, and heat is not exchanged between the supply air path and the exhaust air path Since there are cases where it is better, it is possible to automatically switch to an appropriate mode, and the compatibility is high.

  The building has an upper floor space, and an air supply duct connected to the upper floor air supply opening facing the upper floor space is connected to the downstream side of the air supply passage. When it is, the upper floor space can be ventilated in the same manner as the floor space directly above the floor space.

  Such a building of the present invention is configured to include the ventilation system of the present invention.

  Since it is such a structure, it can be set as the building which show | plays the effect of the ventilation system of this invention mentioned above.

It is explanatory drawing which shows schematic structure of the building provided with the ventilation system of the Example. It is a partial expanded sectional view of an air supply opening. It is a partial expanded sectional view of an exhaust port. It is explanatory drawing of an air blower.

  DESCRIPTION OF EMBODIMENTS Hereinafter, modes for carrying out the present invention will be described based on examples shown in the drawings.

  First, the configuration of the embodiment will be described.

  FIG. 1 shows a schematic configuration of a building 1 provided with the ventilation system of the embodiment.

  First, the building 1 has an underfloor space 7 below the floor 4 and the floor 6.

  Further, above the floor portion 4, there is a first-floor space 2, 2 used for a living room partitioned by a partition wall 2 </ b> A, and above the floor portion 6, an entrance formed by the partition wall 8. It has an open space 5 used for halls and staircases.

  Further, the building 1 is used for a living room or the like partitioned by a partition wall 3A between the first floor ceiling space 2 and 2 and sandwiching the first floor ceiling 2a and the second floor 3a. It has floor space 3 and 3 on the floor.

  The partition walls 2A and 3A and the partition wall 8 are provided with ventilation paths (not shown) including door gaps and louvers.

  Here, the floor portion 4 is formed with air supply ports 11 for the first floor for communicating the floor space 2 and the floor space 7 on the first floor.

  As shown in FIG. 2, the air supply port 11 for the first floor is provided with a louver 13 and a filter 14 for preventing falling objects so as to be detachable.

  Further, the floor 6 is formed with an exhaust port 12 that allows the blow-out space 5 and the under-floor space 7 to communicate with each other.

  As shown in FIG. 3, the exhaust port 12 is provided with a louver 15 and a filter 14 for preventing falling objects from being detachable.

  In addition, the second floor air inlets 110, 110 having the same configuration as the first floor air inlet 11 are formed in the floor 3a on the second floor.

  Furthermore, in the underfloor space 7, as shown in FIG. 1, a blower device 17 is installed below the floor portion 6.

  Here, a filter box 16 having a dustproof function, a dehumidifying function, and a deodorizing function is installed on the upstream side of the blower device 17 via the air supply duct 22.

  Further, on the upstream side of the filter box 16, an underground heat collecting pipe 21 that penetrates the outer wall 9, has an intermediate portion buried in the ground, and has a suction port 21 a for outside air at the tip portion is provided.

  A branch box 18 is installed on the downstream side of the blower device 17 via an air supply duct 23.

  Further, on the upstream side of the branch box 18, the air supply duct 24 having the air outlet 24 a for blowing the ventilation air to the underfloor space 7 at the front end and the ventilation air is sent to the upper floor spaces 3 and 3 on the second floor. For this purpose, an air supply duct 25 is connected.

  Here, the air supply duct 25 branches into the two air supply ducts 25a and 25a from the middle through the partition wall 8, and these air supply ducts 25a and 25a are connected to the ceiling part 2a on the first floor and the second floor. The second floor underfloor space 10 formed between the floor portions 3a is connected to the second floor air inlets 110 and 110, respectively.

  The blower device 17 is connected to an exhaust duct 26 connected to the exhaust port 12 and an exhaust duct 27 having a discharge port 27a for internal air (hereinafter referred to as exhaust air) at the tip.

  Further, as shown in FIG. 4, the blower 17 includes a case 19 that is partitioned by a partition wall 28 into a blower passage 19 a and an exhaust passage 19 b, and a blower as a blower provided in the blower passage 19 a. It is mainly composed of the fan 20.

  Here, a heat exchanger (not shown) as a heat exchanging means is provided in the partition wall portion 17a between the blower passage 19a and the exhaust passage 19b of the blower device 17.

  Further, a bypass exhaust duct 28 is connected between the exhaust duct 26 and the exhaust duct 27 via flow path switching valves 29a and 29b, and exhaust air passes through an exhaust path 19b in contact with the heat exchanger. The route and the route passing through the bypass exhaust duct 28 where the exhaust air does not contact the heat exchanger can be switched.

  These routes are switched by comparing the temperatures measured by temperature sensors (not shown) provided in the air supply path (for example, the air flow path 19a) and the exhaust path (for example, the upper part of the exhaust duct 26), respectively. To compare).

  When a determination unit (not shown) determines that heat exchange should be performed, the control unit (not shown) forms a route through which the exhaust air passes through the flow path switching valves 29a and 29b through the exhaust path 19b. Thus, a mode (state) in which heat is exchanged between the air blowing path 19a and the exhaust path 19b is set.

  Further, when a determination unit (not shown) determines that heat exchange should not be performed, a route through which the exhaust air passes through the bypass exhaust duct 28 through the flow path switching valves 29a and 29b by the control unit (not shown). And a mode (state) in which heat exchange is not performed between the air passage 19a and the exhaust passage 19b.

  Next, the state which operated the ventilation system of this Example is demonstrated.

  First, when the blower fan 20 shown in FIG. 4 is operated, the outside air in FIG. 1 is sucked into the underground heat collecting pipe 21 from the suction port 21a as supply air (OA).

  The sucked air (outside air) is sucked into the filter box 16 after exchanging heat with the underground heat in the underground heat collecting pipe 21.

  The sucked air (outside air) is cleaned in the filter box 16 by removing dust by the dustproof function, removing moisture by the dehumidifying function, and removing odor by the deodorizing function.

  The purified air passes through the air supply duct 22 and is sucked into the air passage 19a of the air blower 17.

  Then, the air is supplied into the branch box 18 by the blower fan 20 through the air supply duct 23.

  Part of the air (SA2) supplied into the branch box 18 passes through the supply ducts 25, 25a, 25a to the second-floor air supply ports 110, 110 into the upper floor spaces 3, 3 on the second floor. Air is supplied as indicated by the arrows.

  The remaining air (SA1) supplied into the branch box 18 is blown into the underfloor space 7 from the air outlet 24a at the tip of the air supply duct 24, and then the first floor air supply port 11, .. Are supplied into the upper floor spaces 2 and 2 on the first floor as indicated by arrows.

  And the air after ventilating the floor space 2, 2 on the first floor and the floor space 3, 3 on the second floor passes through an air passage (not shown) made up of a gap of the door or a louver, etc. After ventilation, the air is exhausted from the exhaust port 12 into the exhaust duct 26 as exhaust air.

  Here, in the mode in which heat exchange is performed, the exhaust air is exhausted into the exhaust passage 19b of the blower device 17.

  On the other hand, in the mode in which heat exchange is not performed, the exhaust air is exhausted into the bypass exhaust duct 28.

  Further, the exhausted air passes through the exhaust duct 27 in both modes, and is exhausted from the discharge port 27a to the outside as exhaust (EA).

  In addition, when performing cooling, there is a high possibility that the air in the exhaust passage 19b that is a part of the exhaust air passage is colder than the air in the air passage 19a that is a part of the supply air passage. As a result of comparing the temperature measured by the temperature sensor, if so, the control unit (not shown) controls the flow path switching valves 29a and 29b so that the exhaust air becomes a route through the exhaust path 19b. It is set as the mode which performs heat exchange between the ventilation path 19a and the exhaust path 19b.

  On the other hand, when the air is not cooled even in summer, there is a possibility that the air in the air supply path 19a that is a part of the supply air path is cooler than the air in the exhaust path 19b that is a part of the exhaust air path. Therefore, as a result of comparing the temperatures measured by the temperature sensor, if so, the control unit (not shown) causes the passage switching valves 29a and 29b to become a route through which the exhaust air passes through the bypass exhaust duct 28. And a mode in which heat exchange is not performed between the air blowing path 19a and the exhaust path 19b.

  In addition, when heating is performed, there is a high possibility that the air in the exhaust passage 19b that is a part of the exhaust air passage is warmer than the air in the air passage 19a that is a part of the supply air passage. As a result of comparing the temperature measured by the temperature sensor, if so, the control unit (not shown) controls the flow path switching valves 29a and 29b so that the exhaust air becomes a route through the exhaust path 19b. It is set as the mode which performs heat exchange between the ventilation path 19a and the exhaust path 19b.

  On the other hand, when heating is not performed even in winter, there is a possibility that the air in the air supply passage 19a that is a part of the supply air passage is warmer than the air in the exhaust passage 19b that is a part of the exhaust air passage. Therefore, as a result of comparing the temperatures measured by the temperature sensor, if so, the control unit (not shown) causes the passage switching valves 29a and 29b to become a route through which the exhaust air passes through the bypass exhaust duct 28. And a mode in which heat exchange is not performed between the air blowing path 19a and the exhaust path 19b.

  Of course, in spring and autumn, the mode is automatically switched to an appropriate mode based on the result of comparing the temperatures measured by the temperature sensor. Next, functions and effects of the embodiment will be described.

  In the ventilation system of such an embodiment, air (outside air) is taken in from outside by a blower fan 20 as an air supply means provided in an air supply air passage, and the first floor floor space 2, 2 and the second floor space. 3 is a ventilation system for a building 1 that supplies air to floors 3 and 3 and exhausts the air in floor spaces 2 and 2 on the first floor and floor spaces 3 and 3 on the second floor to the outside via an exhaust air passage.

  In the upper floor spaces 2 and 2 on the first floor of the building 1, air supply ports 11 for the first floor communicating with the underfloor space 7 are provided in the floor portion 4. A structure in which the underground heat collecting pipe 21 is provided on the downstream side of 21a, and the filter box 16 having a dustproof function, a dehumidifying function and a deodorizing function is provided on the downstream side to form an air supply path. It is said that.

  With such a configuration, the air (outside air) that has passed through the underground heat collecting pipe 21 can be clean, dust-proof, dehumidified, and deodorized, and the interior of the building 1 can be ventilated with this clean air.

  In addition, air (outside air) is passed through the underground heat collecting pipe 21 to exchange heat with the underground heat and is sent into the building 1 to cool the building 1 in the hot season such as summer and warm in the cold season such as winter. Air conditioning using geothermal heat can be performed at the same time.

  Here, the filter box 16 is provided in the underfloor space 7.

  For this reason, since the filter box 16 does not occupy the floor space 2 or the ventilated space 5 on the first floor, the floor space 2 or the ventilated space 5 on the first floor can be widely used. In addition, the supply of air from the air outlet 24a at the front end of the air supply duct 24, which is the end of the air supply air passage, to the upper floor spaces 2 and 2 on the first floor does not pass through the air supply duct but through the underfloor space 7. Then, it is performed from the air supply ports 11.

  Therefore, since there is no air supply duct between the air outlet 24a and the air supply ports 11,..., It can be implemented at low cost and maintenance can be easily performed.

  Further, in the blower device 17, a heat exchanger as a heat exchange means is provided in the partition wall portion 17 a between the air passage 19 a that is a part of the supply air passage and the exhaust passage 19 b that is a part of the exhaust air passage. Is provided.

  For this reason, the heat (hot or cold) that escapes from the discharge port 27a to the outside through the exhaust air passage can be suppressed as much as possible.

  Further, the exhaust air passage includes a route in which the exhaust air passes through the air passage 19a in the blower 17 and contacts the heat exchanger, and a route in which the exhaust air passes through the bypass exhaust duct 28 and does not contact the heat exchanger. And switching between these routes automatically switches between a mode for performing heat exchange and a mode for not performing heat exchange.

  For this reason, for example, in the building 1, when the air is not cooled even in a hot season such as summer, the air in the supply air passage may be cooler than the air in the exhaust air passage, When heating is not performed even in the cold season, the air in the supply air path may be warmer than the air in the exhaust air path, and heat is not exchanged between the supply air path and the exhaust air path Since there are cases where it is better, it is possible to automatically switch to an appropriate mode, and the compatibility is high.

  Further, the branch box 18 on the downstream side of the air supply air passage has an air supply duct 25, which communicates with the air supply ports 110, 110 for the second floor provided in the floor portion 3a of the floor space 3, 3 on the second floor. 25a and 25a are connected.

  For this reason, the same ventilation as the first floor floor spaces 2 and 2 can be performed in the second floor floor spaces 3 and 3.

  The building 1 of such an example is configured to include the ventilation system of the above-described example.

  Since it is such a structure, it can be set as the building which show | plays the effect of the ventilation system of an above-described Example.

  As mentioned above, although the form for implementing this invention was explained in full detail based on the Example with reference to drawings, the concrete structure is not limited to this Example, and is a grade which does not deviate from the summary of this invention. Design changes are included in the present invention.

  For example, in the embodiment described above, the building 1 is implemented as a simple two-story structure in order to simplify the description. However, the present invention is not limited to this and may be implemented in other structures.

  Further, in the above-described embodiment, the first floor air supply port 11, the first floor air supply port 110 and the exhaust port 12 are provided on the floor 4, the floor 3 a, and the floor 6, respectively. However, the present invention is not limited to this.

  Further, in the above-described embodiment, the filter box 16 is provided on the upstream side of the blower fan 20 as the blower unit, but the present invention is not limited to this, and the filter box 16 may be provided on the downstream side.

  Moreover, in the above-mentioned Example, although the ventilation fan 20 as a ventilation means was provided and implemented in the ventilation path 19a of the air blower 17, it is not limited to this, For example, it implements by providing in the suction inlet 21a etc. Also good.

  Furthermore, in the above-described embodiment, switching between the mode for performing heat exchange and the mode for not performing heat exchange is performed by switching the route of the exhaust air, but is not limited thereto, for example, As a heat exchanger as a heat exchange means, a heat exchanger that can switch between a mode for performing heat exchange and a mode for not performing heat exchange may be used.

1 Building 2 Floor space on the first floor (space above the floor)
2A Partition wall 2a First floor ceiling 3 Second floor floor space (upper floor space)
3A Partition wall 3a Floor 2 on the second floor 4 Floor 5 on the floor on the first floor 5 Ventilation space 6 Floor 7 on the ventilation space 8 Floor space 8 Partition wall 9 Outer wall 10 Floor 2 on the second floor 11 Air supply port for the first floor ( Air supply port)
110 2nd floor air inlet (upper air inlet)
12 exhaust port 13 louver 14 filter 15 for falling object prevention louver 16 filter box 17 air blower 17a partition 18 partition box 19 case 19a air passage (part of air supply air passage)
19b Exhaust passage (part of exhaust air passage)
20 Blower fan (air supply means)
21 Underground heat collecting pipe 21a Suction port 22 Air supply duct 23 Air supply duct 24 Air supply duct 24a Air outlet 25 Air supply duct 25a Air supply duct 26 Exhaust duct 27 Exhaust duct 27a Discharge port 28 Bypass exhaust duct 29a Channel switching valve 29b Flow path switching valve

Claims (5)

A building ventilation system that takes in air from the outside by a blowing means provided in an air supply air passage, supplies the air to the space above the floor, and exhausts the air in the space above the floor to the outside,
An air supply opening facing the space above the floor of the building and communicating with the space below the floor is provided,
Downstream of the inlet of the outdoor air, together with is provided with ground adopt heat pipe, further downstream thereof is the air supply path is provided with a filter box having an air cleaning function is formed ,
A heat exchange means is provided between the supply air passage and the exhaust air passage,
The exhaust air passage has a route in contact with the heat exchanging means and a route not in contact with the heat exchanging means. By switching these routes, the temperature of the air in the exhaust air passage is higher during the hot season. When the temperature of the air in the supply air passage is lower than the temperature of the air in the supply air passage or when the temperature of the air in the exhaust air passage is higher than the temperature of the air in the supply air passage in the cold season, the heat exchange is performed. When the temperature of the air in the exhaust air passage is higher than the temperature of the air in the supply air passage in the hot season, or in the cold season, the temperature of the air in the exhaust air passage is higher. When the temperature of the air in the supply air path is lower , the ventilation system is controlled such that each mode is automatically switched to a mode in which heat exchange is not performed .   The ventilation system according to claim 1, wherein the filter box is provided in the underfloor space.   The supply of air from the supply air passage to the space above the floor is performed from the supply port via the space below the floor without using an air supply duct. Ventilation system. The building has an upper floor space, and an air supply duct communicating with an upper floor air inlet provided facing the upper floor space is connected to the downstream side of the air supply passage. The ventilation system according to any one of claims 1 to 3 , wherein the ventilation system is provided. A building comprising the ventilation system according to any one of claims 1 to 4 .