JP2000074445A - Heat exchanging ventilation system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heat exchanging ventilation system in which ventilation rate of a bath room can be increased appropriately in correspondence with the operating mode of a bath room air conditioner, or the like. SOLUTION: The heat exchanging ventilation system comprises a duct 3 for exhaust indoor air to the outside, a duct 2 for supplying outdoor air to a habitable room, and a ventilation unit 1 for exchanging heat between the indoor air and the outdoor air through a total heat exchanger 12 wherein the air in a bath room being supplied through a bath room exhaust duct 36 can be fed to the total heat exchanger 12 side or the bypath 15 side through a damper mechanism 5. When the bath room air is fed to the bypath 15 side, ventilation rate of the bath room air is increased as compared with when it is fed to the total heat exchanger 12 side because the total heat exchanger 12 has no conduction resistance. Consequently, the bath room can be ventilated in a short time.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat exchange ventilation system for ventilating a living room or a bathroom in an apartment house or the like.

[0002]

2. Description of the Related Art Conventionally, as a heat exchange ventilation system of this type, a system for exhausting indoor air from a plurality of rooms, bathrooms, etc. to the outside through an exhaust duct, and supplying outdoor air to each room through an air supply duct. Has been proposed.

In addition, indoor and outdoor air is supplied to a ventilation unit, and heat is exchanged with each other by a heat exchanger installed in the ventilation unit, for example, a total heat exchanger or a sensible heat exchanger.

In summer, outdoor air (temperature: high) is cooled by indoor air (temperature: low) and supplied to the living room by heat exchange between the two airs, and outdoor air (temperature: low) in winter. Is heated by indoor air (temperature: high) and fed to the living room.

[0005] By using the heat exchange ventilation system as described above, while the ventilation of the living room and the like is performed, the extreme temperature rise of the living room temperature in summer and the extreme temperature decrease of the living room temperature in winter due to the ventilation. Is prevented.

[0006]

However, in the conventional heat exchange ventilation system, since each living room and the bathroom are ventilated at the same level, for example, the drying mode (the bathroom is used as a laundry drying room) by a bathroom air conditioner. Even if a heating / ventilation mode to be used) or a dry mode (a heating / ventilation mode to prevent mold or the like from being generated on the bathroom wall) is selected, the amount of ventilation in the bathroom cannot be increased. Accordingly, there have been problems such as a long drying time of the laundry and generation of mold and the like on the bathroom wall.

In view of such problems, a method of ventilating the air in the bathroom with a separately provided ventilation fan can be considered. However, when a plurality of ventilation mechanisms are installed indoors, the supply / exhaust balance of each room is disrupted. There is a problem that.

An object of the present invention is to provide a heat exchange ventilation system capable of appropriately increasing the amount of ventilation in a bathroom corresponding to an operation mode of a bathroom air conditioner or the like in view of the above-mentioned conventional problems.

[0009]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention is directed to an exhaust duct for sucking indoor air such as air in a bathroom and air in a living room and discharging the air to the outside; An air supply duct that draws in air and supplies the air to the living room;
In a heat exchange ventilation system having a ventilation unit having an exhaust passage and an air supply passage connected to an exhaust duct and an air supply duct, respectively, and having a ventilation unit for passing indoor air and outdoor air through a heat exchanger with a blower to exchange heat with each other, Of the ducts, a room exhaust duct that allows air in the living room and a bathroom exhaust duct that allows air in the bathroom to be connected to the exhaust passage on the windward side of the heat exchanger, and the inside of the bathroom that has flowed to the windward side of the heat exchanger. It has a bypass passage that guides air to the leeward side of the heat exchanger by bypassing the heat exchanger, and a damper mechanism that selectively switches the flow of air in the bathroom to the heat exchanger side or the bypass passage side. I have.

According to the present invention, the air in the bathroom can be caused to flow to the heat exchanger side or to the bypass passage side by the damper mechanism. Here, when flowing the bathroom air to the bypass passage side, compared with flowing to the heat exchanger side,
Since there is no flow resistance in the heat exchanger, the ventilation volume of the air in the bathroom increases.

According to a second aspect of the present invention, in the heat exchange ventilation system according to the first aspect, the damper mechanism includes a drying mode in which the bathroom air conditioner installed in the bathroom dries laundry and the like, or a wall surface of the bathroom. When the dry mode for drying is performed, the flow of the air in the bathroom is switched from the heat exchanger side to the bypass passage side. Thereby, in the drying mode or the dry mode, a large amount of air in the bathroom is ventilated.

[0012] The invention of claim 3 is claim 1 or claim 2.
In the heat exchange ventilation system according to the present invention, when the bathroom air conditioner installed in the bathroom is in a drying mode for drying laundry or the like, or in a dry mode for drying bathroom walls or the like, the rotation speed of the blower is increased. Is set.
Thus, in the drying mode or the dry mode, a large amount of air in the bathroom is ventilated.

[0013] The invention of claim 4 is the invention of claim 2 or claim 3.
In the heat exchange ventilation system according to the above, since the ventilation unit is controlled by the remote controller for controlling the bathroom air conditioner, for example, the ventilation amount itself can be arbitrarily set by the remote controller for bathroom control. When the mode or the dry mode is selected by the remote controller, the ventilation of the air in the bathroom can be automatically increased.

[0014]

1 to 6 show a first embodiment of a heat exchange ventilation system according to the present invention. FIG. 1 is a schematic configuration diagram of a heat exchange ventilation system, and FIG. 2 is a side view of a ventilation unit. FIG. 3 is a cross-sectional view, FIG. 3 is a plan view showing a remote controller for controlling the bathroom air conditioner, FIG. 4 is a block diagram showing a drive control circuit of the heat exchange ventilation system, and FIG. 5 is a flowchart showing drive control of the heat exchange ventilation system.

This heat exchange ventilation system is installed in an apartment house, a detached house, etc., as shown in FIG.
A ventilation unit 1, an air supply duct 2 for guiding outdoor air to a plurality of rooms, an exhaust duct 3 for guiding air in a central suction room (for example, a corridor) communicating with each room, air in a bathroom, and air in a toilet to the outside, a bathroom And a bathroom air conditioner 4 installed on the ceiling.

As shown in FIG. 2, the ventilating unit 1 has a total heat exchanger 12 which divides a casing 11 into upper and lower parts, and on one side in a longitudinal direction thereof, divides the upper and lower spaces. On the other hand, the sirocco fan 13a,
13b are installed up and down, the upper part is an exhaust sirocco fan 13a, and the lower part is an air supply sirocco fan 13b.

On one side of the casing 11, an outlet 14a connected to the room air supply duct 21 is provided at an upper portion thereof.
Branch chamber 22, branch duct 23 and outlet grill 24
The outside air is blown to each living room through the. Similarly, a suction port 14b connected to the room exhaust duct 31 is provided at a lower portion thereof, and air in each room is sucked into the ventilation unit 1 through the suction grill 32 and the centralized suction room.

On the other hand, on the other side of the casing 11, an exhaust port 14c connected to the outdoor exhaust duct 33 is provided at the upper part thereof.
The air is exhausted through the exhaust port 34. Similarly, a suction port 14 connected to an outdoor air supply duct 25 is provided at a lower portion thereof.
d is provided so that outdoor air is sucked into the ventilation unit 1 through the suction port 26.

When the sirocco fans 13a and 13b are driven in the heat exchange ventilation system configured as described above, as shown in FIGS. 1 and 2, outdoor air (open arrow) is supplied to the suction port 26 → Outdoor air supply duct 25 → Suction port 1
4d → Sirocco fan 13b for air supply → Total heat exchanger 12 →
Air outlet 14a → room air supply duct 21 → branch chamber 22
The branch duct 23 → the outlet grill 24 → the living room flows sequentially, and the outdoor air is supplied to each living room.

On the other hand, the indoor air (hatched arrow) in each room is
Centralized suction room → suction grill 32 → room exhaust duct 31 →
Suction port 14b → total heat exchanger 12 → exhaust sirocco fan 13a → exhaust port 14c → outdoor exhaust duct 33 → exhaust port 3
4 sequentially, and the indoor air is exhausted outside.

In this ventilation unit 1, the outdoor air passage from the suction port 14d to the air outlet 14a is formed as an air supply passage 27, and the suction port 14b to the exhaust port 14b.
An exhaust passage leading to c is formed as an exhaust passage 35.

In this embodiment, in addition to the above heat exchange ventilation system, as shown in FIG. 1, the bathroom air conditioner 4, bathroom exhaust duct 36, toilet exhaust duct 37, bypass passage 15
And a damper mechanism 5.

That is, the bathroom air conditioner 4 is provided with a circulation fan 4
1 and an electric heater 42, and these devices 41,
42 is driven to heat the bathroom. The bathroom exhaust duct 36 is connected to the intake port 14 e of the ventilation unit 1 through the intake grill 38, and the intake port 14 e is installed in the exhaust passage 35 on the windward side of the total heat exchanger 12. Further, the toilet exhaust duct 37 is connected to the leeward side suction port 14f of the total heat exchanger 12 through the suction grill 39.
Connected to. Therefore, the exhaust sirocco fan 13a
When driving the air in the toilet (the hatched arrow in Fig. 1)
, Each suction grille 39 → toilet exhaust duct 37 → each suction port 14 f → exhaust sirocco fan 13 a → exhaust port 14 c
→ Outdoor exhaust duct 33 → Exhaust port 34 sequentially flows, and indoor air is exhausted outdoors.

Further, as shown in FIG. 1, the bypass passage 15 is provided in the exhaust passage 35 of the ventilation unit 1 and bypasses the side surface of the total heat exchanger 12 so as to bypass the total heat exchanger 12.
Are formed from the windward side to the leeward side. on the other hand,
The damper mechanism 5 switches the bathroom air flowing into the windward side of the total heat exchanger 12 between the total heat exchanger 12 side and the bypass passage 15 side. The damper mechanism 5 always closes the bypass passage 15 side and outputs a predetermined signal described later. When input, the entire heat exchanger 12 is closed.

Accordingly, the bypass passage 15 is provided by the damper mechanism 5.
When the side is closed and the exhaust sirocco fan 13a is driven, the air in the bathroom (solid hatched arrow in FIG. 1) is suction grill 38 → bath exhaust duct 36 → suction port 14e → total heat exchanger 12 → exhaust sirocco. The air flows sequentially from the fan 13a, the exhaust port 14c, the outdoor exhaust duct 33, and the exhaust port 34, and the indoor air is exhausted to the outside. On the other hand, the total heat exchanger 1
When the exhaust side sirocco fan 13a is driven by closing the second side, the bathroom air is sucked by the suction grill 38 → the bathroom exhaust duct 36 → the suction port 14e → the bypass passage 15 (in this passage 15, the bathroom air is drawn by a solid chain arrow). ) → the exhaust sirocco fan 13a → the exhaust port 14c → the outdoor exhaust duct 33 → the exhaust port 34, and the indoor air is exhausted to the outside.

The switch group of the remote controller 43 for controlling the bathroom air conditioner 4 will be described with reference to FIG. The control remote controller 43 includes a timer switch 43a, an operation changeover switch 4
3b, an air volume switch 43c and an operation switch 43d.

The start / stop of the bathroom air conditioner 4 is controlled by the operation switch 43d. The operation changeover switch 43b selects a mode of the bathroom air conditioner 4, and various modes such as "dry", "dry", "heating" and "cool air" can be selected as the selected mode. The air volume switch 43c is connected to the ventilation unit 1
This is for controlling the air volume. The timer switch 43a sets the operation time of each mode, and continues the mode operation for the set time. As described above, the ventilation unit 1 is controlled by the switches 43a to 43d. However, as shown in FIG. 1, a remote controller 16 including only the ventilation unit 1 may be separately prepared.

Next, a control circuit based on the control remote controller 43 will be described with reference to FIG. Signals from the switches 43a to 43d of the control remote controller 43 are input to the microcomputer 44, and the respective driving circuits 4
The drive of the ventilation unit 1 and the bathtub air conditioner 4 is controlled through 5 and 46. Here, the ventilation unit 1 is operated for 24 hours, and only the strong wind or the weak wind can be selected with the air volume switch 43c.

Hereinafter, control of the damper mechanism 5 based on the control remote controller 43 will be described with reference to the flowchart of FIG. That is, the ventilation unit 1 has been operating for 24 hours (operating with the damper mechanism 5 closing the bypass passage 15). Here, the drying mode (the circulation fan 41 and the electric heating It is determined whether the heater 42 is operated to the maximum or the dry mode (the circulation fan 41 and the electric heater 42 are operated to prevent the generation of mold on the bathroom wall) (S1, S).
2). When the drying or the dry mode is selected, it is determined whether or not a timer is set. When the timer is set, the closed portion of the damper mechanism 15 is moved from the bypass passage 15 over the set time. Total heat exchanger 1
Move to side 2. Thereby, the bathroom air flows into the bypass passage 15 (S3 to S6).

In the present embodiment, as described above, the ventilation of the bathroom, the toilet and the living room are centrally controlled, and the ducts 2 and 3 can be used in common. Therefore, the structure of the duct is simplified.

When a drying mode or a dry mode is set in the bathroom air conditioner 4 and it is necessary to ventilate the air in the bathroom in a short time, the air in the bathroom is ventilated through the bypass passage 15 and the total heat exchange is performed. Since the flow resistance of the vessel 12 is not received, a large amount of air in the bathroom can be exhausted. On the other hand, when the mode is other than these modes, the total heat exchanger 12
Since the air in the bathroom passes through, the heat is exchanged between the air in the bathroom and the outdoor air, thereby avoiding heat loss.

Further, the ventilation unit 1 can be driven and controlled by the remote controller 43 for controlling the bathroom air conditioner 4, which is convenient.

FIG. 6 shows a second embodiment of the heat exchange ventilation system according to the present invention, in which the damper control according to the first embodiment is further improved.

That is, when the drying mode or the dry mode is selected during the operation of the ventilation unit 1, the air in the bathroom flows through the bypass passage 15 for the set time of the timer, while the sirocco fan 13a for the exhaust air flows. Increase the number of revolutions (the air volume switch 43e is automatically set to strong)
(S1 to S8). As a result, in addition to reducing the flow resistance, the amount of wind blown increases, and the ventilation volume of the air in the bathroom further increases. Other configurations and operations are the same as those of the first embodiment.

In the above embodiments, the total heat exchanger 12 is used as a heat exchanger. However, a sensible heat exchanger may be used to exchange heat between exhaust gas and air supply.

[0036]

As described above, according to the first aspect of the present invention, when the air in the bathroom is caused to flow to the bypass passage by the damper mechanism, there is no flow resistance in the heat exchanger. Since the amount of ventilation increases, bathroom ventilation can be performed in a short time.

According to the second aspect of the present invention, when the drying mode or the dry mode is set in the bathroom air conditioner, a large amount of air in the bathroom can be ventilated, so that the laundry can be reliably dried. Further, mold generation on the bathroom wall can be reliably prevented.

According to the third aspect of the present invention, in the drying mode or the dry mode, the number of revolutions of the blower can be increased, and the air in the bathroom is further ventilated in a short time and in a large amount.

According to the fourth aspect of the present invention, when the drying mode or the dry mode is selected by the remote controller of the bathroom air conditioner, the ventilation volume of the air in the bathroom can be automatically increased, which is convenient.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a heat exchange ventilation system according to a first embodiment.

FIG. 2 is a side sectional view of a ventilation unit.

FIG. 3 is a plan view showing a remote controller for controlling a bathroom air conditioner.

FIG. 4 is a block diagram showing a drive control circuit of the heat exchange ventilation system according to the first embodiment.

FIG. 5 is a flowchart showing drive control of the heat exchange ventilation system according to the first embodiment.

FIG. 6 is a flowchart showing drive control of the heat exchange ventilation system according to the second embodiment.

[Explanation of symbols]

1 ... ventilation unit, 2 ... air supply duct, 3 ... exhaust duct,
4: bathroom air conditioner, 5: damper mechanism, 12: total heat exchanger,
13a, 13b: sirocco fan, 21: room air supply duct, 27: air supply passage, 31: room exhaust duct, 35: exhaust passage, 36: bathroom exhaust duct.

Claims (4)

[Claims] 1. An exhaust duct that sucks indoor air such as air in a bathroom and air in a living room and discharges the air outside, an air supply duct that sucks outdoor air and supplies the air to the living room, and the exhaust duct and the air supply duct. In a heat exchange ventilation system comprising a ventilation unit having an exhaust passage and an air supply passage to be connected, and having indoor air and outdoor air pass through a heat exchanger with a blower to exchange heat with each other, A living room exhaust duct for passing air and a bathroom exhaust duct for passing air in the bathroom are connected to the exhaust passage on the windward side of the heat exchanger. A bypass passage for bypassing the heat exchanger and leading to the leeward side of the heat exchanger; and a damper mechanism for selectively switching the flow of air in the bathroom to the heat exchanger side or the bypass passage side. To be Exchange ventilation system. 2. A drying mode in which a bathroom air conditioner installed in a bathroom dries laundry or the like,
When it becomes the dry mode to dry the bathroom wall etc.,
The heat exchange ventilation system according to claim 1, wherein the air flow in the bathroom is set to be switched from the heat exchanger side to the bypass passage side. 3. When the bathroom air conditioner installed in the bathroom is in a drying mode for drying laundry or the like, or in a drying mode for drying bathroom walls or the like, the number of rotations of the blower is set to be increased. 2. The method according to claim 1, wherein
Or the heat exchange ventilation system according to claim 2. 4. The heat exchange ventilation system according to claim 2, wherein the ventilation unit is controlled by a remote controller for controlling the bathroom air conditioner.