JP3959182B2 - Heat exchange ventilation system - Google Patents

Description

[0001]
BACKGROUND 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]
[Prior art]
Conventionally, as this type of heat exchange ventilation system, a system has been proposed in which indoor air in a plurality of living rooms, bathrooms, etc. is exhausted to the outside through an exhaust duct, while outdoor air is supplied to each living room through an air supply duct. .
[0003]
Also, indoor and outdoor air is supplied to a ventilation unit, and heat is exchanged with a heat exchanger installed in the ventilation unit, for example, a total heat exchanger or a sensible heat exchanger.
[0004]
In the summer, outdoor air (temperature: high) is cooled by indoor air (temperature: low) and fed to the living room by heat exchange between the two air. In winter, outdoor air (temperature: low) is indoor air. It is heated by (temperature: high) and fed to the living room.
[0005]
By using the heat exchange ventilation system as described above, ventilation of the living room and the like is performed, but an extreme temperature rise of the room temperature in the summer and an extreme temperature drop of the room temperature in the winter due to this ventilation are prevented. .
[0006]
[Problems to be solved by the invention]
However, in the conventional heat exchange ventilation system, since each room and bathroom are ventilated at the same level, for example, in a bathroom air conditioner, a drying mode (a heating / ventilation mode in which the bathroom is used as a drying room for laundry), a drying Even if the mode (mode that heats and ventilates so as not to generate mold on the bathroom wall) is selected, the ventilation rate of the bathroom cannot be increased. Accordingly, there are problems such as long drying time of the laundry and mold on the bathroom wall.
[0007]
In addition, since the humid bathroom air passes through the heat exchanger, when a total heat exchanger is used as this heat exchanger, the heat exchange element (calcium chloride, etc.) of the total heat exchanger is used. Since a large amount of moisture is adsorbed, the life of the heat exchange element is shortened. Further, even in the sensible heat exchanger, since a large amount of dew condensation adheres to the heat exchange element (heat exchange plate or the like), there is also a problem that the life of the heat exchange element is shortened.
[0008]
In view of such problems, a method of ventilating the air in the bathroom with a separately installed ventilation fan is also conceivable, but when installing multiple ventilation mechanisms indoors, the problem of unbalanced air supply and exhaust in each room have.
[0009]
An object of the present invention is to provide a heat exchange ventilation system that can prevent the heat exchanger from becoming short-lived and can appropriately change the ventilation amount of the bathroom, in view of the conventional problems.
[0010]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the invention of claim 1 is directed to an exhaust duct that sucks indoor air such as air in a bathroom and air in a living room and discharges it to the outside, and a supply that sucks outdoor air and supplies it to the living room. In a heat exchange ventilation system comprising an air duct, and a ventilation unit having an exhaust passage and an air supply passage connected to the exhaust duct and the air supply duct, respectively, and exchanging heat between indoor air and outdoor air through a heat exchanger The exhaust duct that connects the room exhaust duct that passes the air in the room to the exhaust passage on the windward side of the heat exchanger, and the bathroom exhaust duct that passes the air in the bathroom connects to the exhaust passage on the leeward side of the heat exchanger The ventilation unit has a structure that restricts or cancels the inflow of air in the room .
[0011]
According to this invention, since the room exhaust duct is connected to the leeward side of the heat exchanger and the bathroom exhaust duct is connected to the leeward side of the heat exchanger, the room air passing through the room exhaust duct is heat-exchanged. On the other hand, the air in the bathroom passing through the bathroom exhaust duct is discharged outside without passing through the heat exchanger. Therefore, humid indoor air does not pass through the heat exchanger.
[0012]
According to the second aspect of the present invention, in the heat exchange ventilation system according to the first aspect, since the mechanism of the ventilation unit is constituted by a damper mechanism, the flow rate of the indoor air and the flow rate of the bathroom air can be changed by the damper mechanism.
[0013]
According to a third aspect of the present invention, in the heat exchange ventilation system according to the second aspect, the damper mechanism includes a drying mode in which the bathroom air conditioner installed in the bathroom dries the laundry or the like, or a drying mode that dries the wall surface of the bathroom. Since it is set to perform the inflow restricting operation when the mode is entered, the bathroom air can be ventilated in a large amount in these modes.
[0014]
In the heat exchange ventilation system according to the third aspect of the present invention, the ventilation unit is controlled by the remote control for controlling the bathroom air conditioner in the heat exchange ventilation system according to the third aspect. In addition to being able to set the air volume arbitrarily, when the drying mode or dry mode is selected with this remote control, the ventilation volume of the bathroom air can be automatically increased.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
1 to 6 show an embodiment of a heat exchange ventilation system according to the present invention. FIG. 1 is a schematic configuration diagram of the heat exchange ventilation system, FIG. 2 is a side sectional view of a ventilation unit, and FIG. FIG. 4 is a block diagram showing a drive control circuit of the heat exchange ventilation system, FIG. 5 is a flowchart showing the drive control of the heat exchange ventilation system, and FIG. 6 is a front view of the damper mechanism. .
[0016]
This heat exchange ventilation system is installed in an apartment house, a detached house, etc., and as shown in FIG. 1, a ventilation unit 1, an air supply duct 2 for guiding outdoor air to a plurality of rooms, and a centralized communication with each room It is composed of an air intake duct (for example, a corridor), an air in the bathroom, and an exhaust duct 3 for guiding the air in the bathroom to the outside, and a bathroom air conditioner 4 installed on the ceiling of the bathroom.
[0017]
As shown in FIG. 2, the ventilation unit 1 includes a total heat exchanger 12 that partitions the casing 11 in the vertical direction and partitions the vertical space on one side in the longitudinal direction. On the other hand, sirocco fans 13a and 13b are installed vertically on the other side in the longitudinal direction, the upper part is an exhaust sirocco fan 13a, and the lower part is an air supply sirocco fan 13b.
[0018]
In addition, an air outlet 14a connected to the room air supply duct 21 is provided on one side of the casing 11 so that outdoor air is blown to each room through the branch chamber 22, the branch duct 23, and the outlet grill 24. Yes. Similarly, a suction port 14b connected to the room exhaust duct 31 is provided at the lower part thereof, and air in each room is sucked into the ventilation unit 1 through the suction grill 32 and the concentrated suction room.
[0019]
On the other hand, on the other side of the casing 11, an exhaust port 14 c connected to the outdoor exhaust duct 33 is provided at an upper portion thereof, and exhaust is performed through the exhaust port 34. Similarly, a suction port 14 d connected to the outdoor air supply duct 25 is provided at the lower portion thereof, and outdoor air is sucked into the ventilation unit 1 through the suction port 26.
[0020]
In the heat exchange ventilation system configured as described above, when each sirocco fan 13a, 13b is driven, as shown in FIGS. 1 and 2, the outdoor air (open arrow) is drawn from the suction port 26 to the outdoor air supply. Duct 25 → Suction port 14d → Air supply sirocco fan 13b → Total heat exchanger 12 → Air outlet 14a → Room air supply duct 21 → Branch chamber 22Branch duct 23 → Blowout grill 24 → Living room It is sent to the room.
[0021]
On the other hand, the indoor air (shaded arrows) in each room is a concentrated 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. → Sequentially flows through the exhaust port 34, and the indoor air is exhausted outdoors.
[0022]
In this ventilation unit 1, the outdoor air passage extending from the inlet 14 d to the outlet 14 a is configured as an air supply passage 27, and the exhaust passage extending from the inlet 14 b to the exhaust outlet 14 c is defined as an exhaust passage 35. It is configured.
[0023]
In addition to the heat exchange ventilation system as described above, the present embodiment includes a bathroom air conditioner 4, a bathroom exhaust duct 36, a toilet exhaust duct 37, and a damper mechanism 5, as shown in FIG.
[0024]
That is, the bathroom air conditioner 4 has a circulation fan 41 and an electric heater 42, and drives these devices 41 and 42 to heat the interior of the bathroom. The bathroom exhaust duct 36 is connected to the suction port 14 e of the ventilation unit 1 through the suction grill 38, and the suction port 14 e is installed on the leeward side of the total heat exchanger 12 through the exhaust passage 35. The toilet exhaust duct 37 is also connected to a suction port 14f on the leeward side of the total heat exchanger 12 through a suction grill 39. Therefore, when the exhaust sirocco fan 13a is driven, the air in the bathroom and the toilet air (shaded arrows in FIG. 1) are supplied from the suction grills 38 and 39 to the exhaust ducts 36 and 37 to the suction ports 14e and 14f to the exhaust. The sirocco fan 13a → exhaust port 14c → outdoor exhaust duct 33 → exhaust port 34 sequentially flows, and indoor air is exhausted outdoors.
[0025]
Furthermore, the damper mechanism 5 is installed in the exhaust passage 35 and normally opens the exhaust outlet of the total heat exchanger 12 on the leeward side of the total heat exchanger 12. When a predetermined control signal to be described later is input from the control remote controller 43, the exhaust outlet is closed as shown by a two-dot chain line in FIG. Further, as shown in FIG. 6, the damper mechanism 5 is formed with a circular opening 51 in the center, and when the exhaust outlet is closed, the exhaust amount from each room is limited.
[0026]
A group of switches of the control remote controller 43 of 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 43b, an air volume switch 43c, and an operation switch 43d.
[0027]
The operation switch 43d controls the start and stop of the bathroom air conditioner 4. The operation changeover switch 43b selects a mode of the bathroom air conditioner 4, and can select various modes such as “dry”, “dry”, “heating”, and “cool air” as the selection mode. The air volume switch 43c controls the air volume of the ventilation unit 1. The timer switch 43a sets the operation time in various modes, and continues the mode operation over 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 15 having only the ventilation unit 1 may be prepared separately.
[0028]
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 ventilation unit 1 and the bathtub air conditioner 4 are driven and controlled through the drive circuits 45 and 46 based on the input signals. Here, the ventilation unit 1 is operated for 24 hours, and only the strong wind or the weak wind can be selected by the air volume switch 43c. Further, when the drying mode or the dry mode is selected by the operation switch 43b, the fans 13a and 13b of the ventilation unit 1 are set to be operated strongly regardless of whether the air flow switch 43c is set to be strong or weak. ing.
[0029]
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 continues to operate for 24 hours. Here, the ventilation unit 1 is operated in the drying mode (the circulation fan 41 and the electric heater 42 are operated to the maximum to dry the laundry) or in the dry mode ( It is determined whether the circulation fan 41 and the electric heater 42 are operated to prevent the generation of mold on the bathroom wall (S1, S2). When the drying or the dry mode is selected, it is determined whether or not the timer is set. When the timer is set, the damper mechanism 5 is closed over the set time (S3 to S6). ). That is, in the dry mode or the dry mode, the damper mechanism 5 closes the exhaust port of the total heat exchanger 12 to limit the exhaust amount from each room.
[0030]
In the present embodiment, as described above, bathroom ventilation, toilet ventilation, and living room ventilation are centrally managed, and the ducts 2 and 3 can be used in common. Therefore, the structure of the duct is simplified.
[0031]
Further, since the humid air in the bathroom flows to the leeward side of the total heat exchanger 12 through the bathroom exhaust duct 36, without reducing the adsorption capacity of the heat exchange elements (calcium chloride, etc.) of the total heat exchanger 12, The life of the heat exchange element is not shortened.
[0032]
Further, when the drying mode or the drying 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 damper mechanism 5 restricts the exhaust on the room side. Can be exhausted.
[0033]
Furthermore, the ventilation unit 1 can be driven and controlled by the control remote controller 43 of the bathroom air conditioner 4, which is convenient.
[0034]
In the above-described embodiment, the opening 51 is formed in the damper mechanism 5 to restrict the exhaust on the room side. However, the structure for restricting the exhaust is not limited to this, and the opening degree of the damper mechanism 5 is controlled. You may make it perform. Moreover, in the said embodiment, although the total heat exchanger 12 is used as a heat exchanger, you may make it heat-exhaust and supply air heat-exchange using a sensible heat exchanger.
[0035]
【The invention's effect】
As described above, according to the first aspect of the present invention, since humid air in the bathroom does not pass through the heat exchanger, it is possible to prevent the heat exchange element from being shortened.
[0036]
According to the invention of claim 3, when the drying mode or the dry mode is set by the bathroom air conditioner, a large amount of air in the bathroom can be ventilated, so that the laundry can be reliably dried, and the bathroom It is possible to reliably prevent mold from forming on the wall.
[0037]
According to the invention of claim 4, when the drying mode or the dry mode is selected by the remote controller of the bathroom air conditioner, the ventilation amount of the bathroom air 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 the present invention. FIG. 2 is a side sectional view of a ventilation unit. FIG. 3 is a plan view showing a remote control for controlling a bathroom air conditioner. FIG. 5 is a block diagram showing a drive control circuit of the exchange ventilation system. FIG. 5 is a flowchart showing drive control of the heat exchange ventilation system according to the present invention. FIG. 6 is a front view of the damper mechanism according to the invention.
DESCRIPTION OF SYMBOLS 1 ... Ventilation unit, 2 ... Air supply duct, 3 ... Exhaust duct, 4 ... Bathroom air conditioner, 5 ... Damper mechanism, 12 ... Total heat exchanger, 21 ... Living room air supply duct, 27 ... Supply air passage, 31 ... Living room Exhaust duct, 35 ... exhaust passage, 36 ... bathroom exhaust duct.

Claims (4)

An exhaust duct that sucks indoor air such as air in the bathroom and air in the living room and discharges it to the outside, an air supply duct that sucks outdoor air and supplies it to the living room, and an exhaust passage connected to each of the exhaust duct and the air supply duct And a heat exchange ventilation system comprising a ventilation unit having a supply passage and exchanging heat between indoor air and outdoor air through a heat exchanger,
Of the exhaust ducts, a room exhaust duct through which air in the room passes is connected to the exhaust passage on the windward side of the heat exchanger, and a bathroom exhaust duct through which air in the bathroom passes is provided on the leeward side of the heat exchanger. A heat exchange ventilation system connected to an exhaust passage, wherein the ventilation unit has a mechanism for restricting or releasing the inflow of air in the room . The heat exchange ventilation system according to claim 1, wherein the mechanism of the ventilation unit is a damper mechanism . The damper mechanism is set to perform an inflow restricting operation 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 the wall surface of the bathroom. The heat exchange ventilation system according to claim 2, wherein: The heat exchange ventilation system according to claim 3, wherein the ventilation unit is controlled by a remote controller for controlling the bathroom air conditioner.

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