JP4388646B2 - Ventilation device operating method and ventilation device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a duct type ventilation device incorporating an air supply fan and an exhaust fan mainly used in a house.
[0002]
[Prior art]
In recent years, with the spread of highly airtight houses, a duct type ventilation device that can ensure ventilation is often installed. The residential ventilator is of the first type or the third type and is characterized in that the air supply amount and the exhaust amount are almost the same or the air supply amount is slightly larger than the exhaust amount. Apart from such a ventilator, a local ventilator, such as a range hood fan, is often arranged inside a house, for example, in a kitchen.
[0003]
Conventionally, a range hood fan is operated only during cooking, and is a local exhaust facility for forcibly discharging combustion gas, odor-containing steam, oily smoke, etc. generated during cooking to the outdoors. Exhaust the air in the kitchen in large quantities, so if you do not supply the air properly, the range hood fan will not discharge properly and will not function properly. Defects such as difficulty in opening the door occur.
[0004]
[Problems to be solved by the invention]
In order to avoid such a problem, for example, a method of using a simultaneous hood / exhaust type range hood fan having a structure for taking in outside air at the same time as exhaust and supplying and exhausting air independently from the air conditioning equipment in the house is adopted. . However, when such a method is adopted, an air supply duct dedicated to the range hood fan must be installed, which causes a problem that the fan itself becomes expensive and equipment cost increases.
[0005]
[Means for Solving the Problems]
The present invention provides a ventilation system including a duct type ventilation device including an air supply fan and an exhaust fan, and an independent exhaust device within an operation region of the ventilation device, and the outside air is exhausted to the ventilation target room by the air supply fan. In addition to the first operation method in which the return air of the ventilation target room is exhausted to the outside by the exhaust fan at the same time as the air is supplied, the exhaust fan intake port is shut off from the return air inlet and communicated with the outside air intake to discharge the exhaust fan. A ventilator operation method characterized by enabling a second operation method in which an outlet is shut off from an exhaust port and communicated with an air supply port, and the exhaust fan is operated for air supply together with the air supply fan. .
[0006]
Further, the present invention relates to the operation method according to the preceding item, wherein when the independent exhaust device is operated, the ventilation device is switched from the first operation method to the second operation method. In addition, the present invention relates to a device that switches from the first operation method to the second operation method of the ventilation device at any time manually.
[0007]
Further, the present invention provides a ventilation system including a duct type ventilation device including an air supply fan and an exhaust fan, and an exhaust device independent in an operation region of the ventilation device, and a suction port of the exhaust fan is returned to the return air. The ventilator is provided with a first opening / closing door that shuts off from the opening and communicates with the outside air inlet, and a second opening / closing door that shuts off the discharge port of the exhaust fan from the exhaust port and communicates with the air supply port. It is related with the ventilation apparatus characterized.
[0008]
Furthermore, in the ventilator according to the present invention, a heat exchanger for exchanging heat between the return air and the outside air is provided, a filter is attached to the lower surface of the heat exchanger, and an openable / closable inspection port is provided on the surface facing the filter of the ventilator. It can also be attached. This heat exchanger works only when operating according to the first operating method.
[0009]
【The invention's effect】
Since the present invention has been described above, when operating an exhaust device independent of the entire ventilation system, for example, a range hood fan in a kitchen, supply air is insufficient in the system, and negative pressure is generated in the room, so that the ventilation device It is possible to prevent inconveniences such as lowering of the function and difficulty in opening and closing the door. In addition, a heat exchanger can be provided between the air supply duct and the exhaust duct of the ventilation device to save the operating power of the separately provided air conditioning unit.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
Embodiments of the ventilator of the present invention are shown in FIGS. FIG. 1 is a conceptual diagram of a ventilation system including a duct type ventilation device including an air supply fan and an exhaust fan, and an independent exhaust device within an operation region of the ventilation device. The ventilation device 1 includes an air supply fan 2. The exhaust fan 3 is disposed, and the air supply fan 2 boosts the outside air introduced into the ventilator 1 through the outside air inlet 4, the outside air intake duct 5, and the air supply fan intake port 6, and supplies the air supply fan discharge port. 7, the air is discharged into the chamber 10 through the air supply duct 8 and the air supply port 9. On the other hand, the return air in the chamber 10 is returned to the ventilator 1 through the return air port 11, the return air duct 12, and the exhaust fan suction port 13, and energized by the exhaust fan 3 to be exhausted from the exhaust fan discharge port 14 and the exhaust duct. 15, it is discharged to the outside air through the exhaust port 16.
[0011]
Between the outside air intake duct 5 and the return air duct 12, and between the return air duct 12 and the exhaust fan suction port 13, a series of first opening / closing doors 17a and second opening / closing doors 17b are provided, A series of third opening / closing doors 18 a and fourth opening / closing doors 18 b are provided between the air supply duct 8 and the exhaust duct 15 and between the exhaust duct 15 and the exhaust port 16. The first opening / closing door 17a, the second opening / closing door 17b, the third opening / closing door 18a, and the fourth opening / closing door 18b are interlocked with each other, and the first opening / closing door 17a and the third opening / closing door 18a are normally closed. The second opening / closing door 17b and the fourth opening / closing door 18b are open.
[0012]
When odorous and harmful smoke or hot air is generated in a kitchen or the like in the room 10, a range hood fan 19 is provided above the generation location to discharge this harmful atmosphere to the outside. In this case, the range hood fan 19 has only an exhaust fan and sucks out ambient air together with a harmful atmosphere, so the air in the chamber 10 temporarily has a negative pressure compared to the outside air. This negative pressure reduces the performance of the ventilator, and in order to compensate for this negative pressure, air from the outside enters the chamber 10 and is heavy when trying to open the door from the outside. Conversely, inconveniences such as sudden inhalation occur.
[0013]
In order to prevent such inconvenience, when the range hood fan 19 is operated in the room 10, the first opening / closing door 17a and the second opening / closing of the ventilation device 1 are interlocked with it or manually as necessary. The opening and closing of the door 17b, the third opening / closing door 18a, and the fourth opening / closing door 18b are reversed so that the suction port 13 of the exhaust fan 3 communicates with the outside air intake 4, and the discharge port 14 of the exhaust fan 3 and the supply air The mouth 9 is communicated. In other words, the exhaust fan 3 is temporarily operated as an air supply fan, and the air supply to the chamber 10 is increased so that no negative pressure is generated in the room.
[0014]
FIG. 2 shows a modification of the embodiment of FIG. 1, and the upstream side communication hole 23 of the central partition wall 22 that separates the intake section 20 and the exhaust section 21 in the ventilation device 1 including the air supply fan 2 and the exhaust fan 3. The first opening / closing door 17a is provided, the return air duct connecting port 24 is provided with the second opening / closing door 17b, the third opening / closing door 18a is provided in the downstream communication hole 25 of the central partition wall 22, and the fourth opening / closing is provided in the exhaust duct connecting port 26. A door 18b is provided. As in the first embodiment, the first opening / closing door 17a, the second opening / closing door 17b, the third opening / closing door 18a, and the fourth opening / closing door 18b are interlocked with each other. The open / close door 18a is closed, and the second open / close door 17b and the fourth open / close door 18b are open.
[0015]
FIG. 3 shows a further simplification of the embodiment shown in FIG. 2, and the first opening / closing door 17a and the second opening / closing door 17b, the third opening / closing door 18a and the fourth opening / closing door 18b of the ventilation device 1 are respectively shown. The first opening / closing door 17 selectively opens and closes the upstream communication hole 23 of the central partition wall 22 and the return air duct connection port 24, and the third opening / closing door 18 connects with the downstream communication hole 25 of the central partition wall 22. The exhaust duct connection port 26 is selectively opened and closed. Normally, the first opening / closing door 17 closes the upstream communication hole 23 of the central partition wall 22, and the third opening / closing door 18 closes the downstream communication hole 25 of the central partition wall 22, and the return introduced from the return air duct connection port 24. The air is energized by the exhaust fan 3 and flows toward the exhaust duct connection port 26. Thus, when negative pressure is generated in the chamber 10, the first opening / closing door 17 and the second opening / closing door 18 close the return air duct connection port 24 and the exhaust duct connection port 26, respectively, and at the same time, the upstream communication hole of the central partition wall 22. 23 and the downstream communication hole 25 are opened, and the exhaust fan 3 operates in parallel with the intake fan 2 so as to eliminate the negative pressure in the chamber 10.
[0016]
In FIG. 4, an upward parallel flow type rotary heat exchanger 27 is provided between the exhaust duct side and the outside air intake duct side of the ventilator 1, and the heat released into the exhaust is taken into the intake air. Therefore, air conditioning is aimed at. FIG. 5 shows an embodiment in which a filter 28 is attached to the lower surface of the heat exchanger 27 and an openable / closable inspection port 29 is attached to the surface of the ventilation device 1 that faces the filter. The inspection port 29 serves for inspection and replacement of the heat exchanger 27 and the filter 28 provided on the downstream side of the air supply side.
[Brief description of the drawings]
FIG. 1 is a conceptual diagram of a ventilation system comprising a duct type ventilator having an air supply fan and an exhaust fan, and an independent exhaust device in an operating region of the ventilator according to the present invention.
FIG. 2 shows a modification of the embodiment of FIG.
FIG. 3 shows still another modification of the embodiment of FIG.
FIG. 4 shows an example in which a heat exchanger is incorporated in the ventilation device of the present invention.
FIG. 5 is a sectional view taken along line AA in FIG. 4 showing an example in which a heat exchanger, a filter, and an inspection port are incorporated in the ventilation device of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Ventilation device 2 Air supply fan 3 Exhaust fan 4 Outside air intake 5 Outside air intake duct 6 Supply air fan inlet 7 Supply air fan outlet 8 Supply air duct 9 Supply air port 10 Chamber 11 Return air port 12 Return air duct 13 Exhaust fan intake port 14 Exhaust fan discharge port 15 Exhaust duct 16 Exhaust port 17, 17a First open / close door 17b Second open / close door 18, 18a Third open / close door 18b Fourth open / close door 19 Range hood fan 20 Air supply unit 21 Exhaust unit 22 Central bulkhead 23 Upstream communication hole 24 Return air duct connection port 25 Downstream communication hole 26 Exhaust duct connection port 27 Heat exchanger 28 Filter
29 Inspection port

Claims (7)

In a ventilation system comprising a duct type ventilator comprising an air supply fan and an exhaust fan and an independent exhaust device within the operating area of the ventilator, simultaneously supplying outside air to the ventilation target room with the air supply fan In addition to the first operation method of exhausting the return air of the ventilation target room to the outside with an exhaust fan, the exhaust fan suction port is shut off from the return air port and communicated with the outside air intake, and the exhaust fan discharge port is connected to the exhaust port. And a second operation method for operating the exhaust fan together with the air supply fan for supplying air, and shutting off from the air supply port. The operation method according to claim 1, wherein when the independent exhaust device is operated, the ventilation device is switched from the first operation method to the second operation method. The operation method according to claim 2, wherein switching from the first operation method to the second operation method of the ventilation device is performed by a start signal of the independent exhaust device. The operation method according to claim 2, wherein switching from the first operation method to the second operation method of the ventilation device is performed manually as needed. In a ventilation system comprising a duct type ventilation device including an air supply fan and an exhaust fan and an independent exhaust device within the operation area of the ventilation device, the intake port of the exhaust fan is blocked from the return air port and the outside air A ventilator characterized in that a first open / close door communicating with the intake port and a second open / close door blocking the discharge port of the exhaust fan from the exhaust port and communicating with the air supply port are provided in the ventilator. . The ventilator according to claim 5, wherein the ventilator is provided with a heat exchanger for exchanging heat between the return air and the outside air. The ventilation according to claim 6, wherein the heat exchanger is an upward parallel flow type rotary type, a filter is attached to the lower surface of the heat exchanger, and an openable / closable inspection port is attached to a surface facing the filter of the ventilation device. apparatus.

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