JP2002317983A - Constant ventilation system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a constant ventilation system which enables energy saving and provides a comfortable space in a room when a user is present in the room. SOLUTION: The constant ventilation system enables switching between a normal mode of normal ventilation rate and a reduction mode in which ventilation rate is lower than the normal mode. The system is also provided with a humidity control unit 1 which enables switching between a normal humidification operation mode and a humidification reduction mode in which humidification capacity is lower than the normal humidification operation mode. When the user is out of the room, the unit 1 is switched not only to the reduction mode but also to the humidification reduction mode.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a constant ventilation system.

[0002]

2. Description of the Related Art As a constant ventilation system, generally,
The ventilation mode of "take fresh air from outside of the room, supply the air to the room through a filter or the like, and discharge dirty air in the room" is always performed. By the way, the ventilation volume of the constant ventilation system is calculated based on the amount of carbon dioxide emitted from the human body, and the system is constantly operated with this ventilation volume. Some ventilation systems have a humidity control unit, which also operates at a constant humidity control capacity.

[0003]

By the way, when there is no user in the room, the vehicle is operated with a constant ventilation rate, despite the reduced generation of carbon dioxide. For this reason, a large amount of power is required and the cost is high. Further, when there is no user, it is useless to maintain the room at a comfortable humidity by the humidity control unit, and in this case, wasteful power consumption is also consumed.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional drawbacks, and an object of the present invention is to achieve energy saving, and furthermore, to provide a comfortable space when a user is present. And to provide a constant ventilation system.

[0005]

SUMMARY OF THE INVENTION Therefore, the constant-ventilation system according to claim 1 is a constant-ventilation system capable of switching between a normal mode of a normal ventilation and a reduction mode in which the ventilation is smaller than the normal mode. Thus, when the user is absent, the reduction mode is set.

In the constant-ventilation system according to the first aspect, when the user is absent, the reduction mode can be set, so that useless ventilation is not performed. In addition, when a user is present, normal ventilation is performed. Therefore, fresh air can be supplied to the room.

A constant-ventilation system according to a second aspect of the present invention includes a humidity control unit 1 capable of switching between a normal humidity control operation mode and a humidity control reduction mode having a smaller humidity control capability than the normal humidity control operation mode. Sometimes, the humidity control unit 1 is set to a humidity control reduction mode in addition to the reduction mode.

In the constant-ventilation system according to the second aspect, when the user is absent, the humidity control unit 1 is set to the humidity control reduction mode in addition to the reduction mode. When a user is present, the normal humidity control operation can be performed, so that the indoor humidity can be adjusted.

A constant ventilation system according to a third aspect of the present invention is characterized in that the constant ventilation system is provided with a mode changeover switch 36, and the mode changeover operation is performed by the mode changeover switch 36.

In the constant ventilation system according to the third aspect, since the mode is switched by the mode changeover switch 36, the operation intended by the user, that is, the operation in the normal mode or the reduction mode can be performed.

A constant ventilation system according to a fourth aspect of the present invention includes a timer means 37, and the mode is switched at a time set by the timer means 37.

In the constant ventilation system according to the fourth aspect, the mode is switched at the time set by the timer means 37. Therefore, if the timer is set, the mode is reliably switched at that time. Therefore, the user does not need to perform the switching operation when switching the mode.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, specific embodiments of the constant ventilation system according to the present invention will be described in detail with reference to the drawings. FIG. 1 is an overall configuration diagram showing an embodiment of a constant ventilation system according to the present invention. This ventilation system
A humidity control unit 1 and a temperature control unit 2 are provided. The humidity control unit 1 can perform ventilation, dehumidification ventilation, humidification ventilation, and the like, and the temperature control unit 2 can perform cooling and heating.

As shown in FIG. 2, the humidity control unit 1 comprises a moisture absorbing / desorbing member 3, a regeneration heating means 4, a laminated sensible heat exchanger 5, a humidification member 6, and a humidification heating means 7. And a casing 8 for accommodating them. In addition, the moisture absorbing and releasing member 3
Is composed of an adsorption rotor, for example, a disc-shaped body formed of a honeycomb or porous granules of an adsorbent such as silica gel, zeolite, alumina, etc., and adsorbs moisture from flowing air while releasing moisture into heated air. It is configured to emit. In this case, the moisture absorbing / desorbing member 3 is pivotally supported by the casing 8 so as to be rotatable about its axis. Further, the laminated sensible heat exchanger 5 is configured such that a plurality of flat passages in a direction perpendicular to each other are laminated, and a first passage portion 9 and a second passage portion 10 which are perpendicular to each other are configured. The heat exchange is performed by utilizing the difference in sensible heat between the air flowing through the air.

The casing 8 is divided into a first chamber 11, a second chamber 12, a third chamber 13, and a fourth chamber 14 by a partition plate S. 12 constitutes a first humidity control passage 16, and the third chamber 13 and the fourth chamber 14 constitute a second humidity control passage 17. Also,
The opening of the first chamber 11 is an outdoor-side suction port 18 of the first humidity control passage 16, the opening of the second chamber 12 is an indoor-side outlet 19 of the first humidity control passage 16, and the third chamber 13 The opening of the second humidity control passage 17 serves as the indoor-side suction port 20, and the opening of the fourth chamber 14 serves as the outdoor-side air outlet 21 of the second humidity control passage 17.
An air supply fan 23 is provided in the second chamber 12, and an exhaust fan 24 is provided in the fourth chamber 14. Also,
The regeneration heating means 4 is composed of, for example, a heater or the like.
The fourth chamber 14 of the humidity control passage 17 is interposed between the moisture absorbing / desorbing member 3 and the laminated sensible heat exchanger 5.

In this case, the humidifying member 6 is a permeable membrane humidifying element. The moisture-permeable membrane humidifying element is, for example, provided with a large number of moisture-permeable membrane pipes, immersing the outside with water, and imparting moisture to the air passing inside the pipe, removing impurities with fine holes, Clean and healthy humidification is possible. The humidifying member 6 is disposed in the second chamber 12, and the humidifying heating means 7 includes, for example, a heater or the like like the heating means 4, and is provided in the second chamber of the first humidity control passage 16. In 12, it is interposed between the humidifying member 6 and the laminated sensible heat exchanger 5.

As shown in FIG. 2, the humidity control unit 1 is installed at the back of the ceiling of a building or the like.
8 is connected to a suction pipe 25, the outdoor outlet 21 is connected to an outdoor exhaust pipe 26, the indoor suction port 20 is connected to an indoor air pipe 27, and the indoor outlet 19 is connected to the temperature control unit 2. Connected to the connection pipe 28. The indoor air pipe 27 has a plurality of branch pipes 29, and each branch pipe 29 is open to each room such as a kitchen, a toilet, a bathroom, and a storage room.

Next, the case of performing the dehumidifying ventilation operation by the humidity control unit configured as described above will be described. in this case,
Since humidification is not performed, the humidification member 6 is set to a state where it does not function as a humidifier. That is, the water of the humidifying member 6 is drained, and the air passing through the humidifying member 6 is kept in a state in which no moisture is applied. In this state, when the moisture absorbing / desorbing member 3 is operated (rotated) and the air supply fan 23 is driven, outside air OA is sucked into the first chamber 11 of the first humidity control passage 16 from the outdoor-side suction port 18. Is done. The outside air OA passes through an air filter (not shown) to remove foreign matter such as dust, and then flows into the moisture absorbing and releasing member 3, where moisture is adsorbed and dried, and the moisture absorbing and releasing member The temperature is raised by the heat of adsorption of the air, and the air becomes high-temperature dehumidified air and flows out of the hygroscopic member 3. And the high temperature dehumidified air is
Further, it flows into the first passage 9 of the sensible heat exchanger 5, where the sensible heat of the dehumidified air is deprived to an appropriate temperature. Passage 10
Is passed through the room air, heat is exchanged with the room air to reach an appropriate temperature, and flows out of the first passage portion 9. Thereafter, the dehumidified air SA (air supply) flows into the second chamber 12. In this case, since the humidifying member 6 does not perform the humidifying function as described above, this air is supplied from the indoor-side outlet 19 to the temperature control unit 2 while being dehumidified.

On the other hand, when the exhaust fan 24 is driven, room air RA (air in a kitchen, a toilet, or the like) is sucked into the third chamber 13 of the second humidity control passage 17 from the indoor suction port 20.
Further, it flows into the second passage 10 of the sensible heat exchanger 5.
The indoor air RA is supplied to the outdoor air O passing through the first passage 9.
A is performed, and after being preheated here, this second
It flows out of the passage 10 and is further heated by flowing through the heating means 4. Then, when the heated air flows into the moisture absorbing and releasing member 3, moisture is released from the moisture absorbing and releasing member 3, and the moisture absorbing and releasing member 3 is regenerated. At this time, the heated air absorbs this moisture, and air EA (exhaust) containing moisture is discharged from the outdoor outlet 21 to the outside through the exhaust pipe (ventilation pipe) 26 to the outside.

In this case, the moisture absorbing / desorbing member 3 includes a portion located in the first humidity control passage 16 as a dehumidifying passage and a portion located in the second humidity control passage 17 as a regeneration passage. Each forms an air passage. That is, the portion located in the first humidity control passage 16 is defined as the first air passage 30, and the portion located in the second humidity control passage 17 is defined as the second air passage 31. Since the moisture absorbing / desorbing member 3 is rotating, the portion located in the first humidity control passage 16 as a dehumidifying passage is next located in the second humidity control passage 17 as a regeneration passage and is regenerated. , Again in the first humidity control passage 16. Hereinafter, this step is repeated. Therefore, the moisture absorbing / desorbing member 3 has the first and second air passages 30 and 31, and the portion that sequentially corresponds to the first humidity control passage 16 becomes the first air passage 30, 1 air passage 3
0 is a dehumidification passage, and a portion that sequentially corresponds to the second humidity control passage 17 is a second air passage 31, and the second air passage 31 is a regeneration passage. For this reason, the moisture absorbing / desorbing member 3 absorbs and releases moisture, and the outside air OA is constantly dehumidified and supplied to the temperature control unit 2.

Next, the humidification and ventilation operation of the humidity control unit 1 will be described. In this case, if the air supply fan 23 is driven,
The low-temperature (for example, about 0 ° C.) outside air OA enters the first chamber 11 and then passes through the first chamber 11 to enter the sensible heat exchanger 5. In this case, the moisture absorption / release member 3 is stopped, and does not function as a dehumidifier. On the other hand, the room air RA which has been heated relatively by the temperature control unit 2 or the like is relatively warm.
3 and enter the sensible heat exchanger 5. In this case, the first
Sensible heat is exchanged between the air flowing through the passage 9 and the air flowing through the second passage 10, the outside air is heated by the room air, and the room air RA is cooled by the outside air. Then, the room air RA enters the fourth chamber 14 having the moisture absorbing / discharging member 3 from the sensible heat exchanger 5 which is stopped and does not exhibit the regenerating function from the sensible heat heat exchanger 5, Exhausted to the outside through The outside air OA flowing out of the sensible heat exchanger 5 is heated by the heating means 7, passes through the humidifying member 6 functioning as a humidifier, passes through the indoor side outlet 19, and connects via the connection pipe 28. It flows into the temperature control unit 2. Therefore, the outside air is supplied with moisture by the humidifying member 6, and is supplied to the temperature control unit 2 as fresh air containing appropriate humidity.

Further, the humidity control unit 1 can form a ventilation mode in which neither dehumidification nor humidification is performed. That is, in the dehumidifying ventilation mode, the moisture absorption / desorption rotor (the moisture absorption / desorption member 3) is turned on, the heating means for regeneration air is turned on, and the moisture permeable membrane humidification unit is turned off. The heating means for the regeneration air is turned off and the moisture permeable membrane humidification unit is turned on. In the ventilation mode, the moisture absorption / desorption rotor (the moisture absorption / desorption member 3) is turned off, and the regeneration air heating means (the regeneration heating means 4) is turned off. Then, the moisture-permeable membrane humidifying unit (humidifying member 6) is turned off.

The temperature control unit 2 includes a compressor, an outdoor heat exchanger, a pressure reducing mechanism, an indoor heat exchanger, and the like. The outdoor heat exchanger functions as an evaporator. A heating operation is performed by making the inner heat exchanger function as a condenser, and a cooling operation is performed by making the outdoor heat exchanger function as a condenser and the indoor heat exchanger functions as an evaporator. It is. The connection pipe 28 is connected to the indoor unit 33 in which the indoor heat exchanger and the like are arranged, and the indoor unit 33 and the humidity control unit are electrically connected by the signal line 15. The indoor unit 33 is connected to a temperature control air pipe 34 connected to a room such as a living room or a living room. Thereby, the temperature-controlled air is supplied from the indoor unit 33 to the temperature-controlled air pipe 3.
The air is supplied to each room through 4. As described above, in this constant-ventilation system, the outside air conditioned by the humidity control unit 1 is temperature-controlled by the temperature control unit 2 so that each room is provided with a comfortable space containing an appropriate temperature and appropriate humidity. I do.

In the constant ventilation system, the ventilation mode can be switched between a normal mode of a normal ventilation volume and a reduction mode in which the ventilation volume is smaller than the normal mode. Here, the normal mode is a displacement set based on the amount of carbon dioxide emitted from the user,
The decrease mode is a ventilation amount of about 40% of the normal mode. The normal mode and the reduction mode can be determined by the rotation speeds of the air supply fan 23 and the exhaust fan 24. Therefore, as shown in FIG. 3, the control unit of the constant ventilation system includes a control unit 35 for controlling the rotation speeds of the air supply fan 23 and the exhaust fan 24, and the control unit 35 controls (changes) the rotation speed. ), A mode changeover switch 36 for issuing a command to perform the operation, and a timer means 37. The control means 35 and the like are configured by an integrated circuit or the like including the functions of the microcomputer.

That is, when the user sets the mode switch 3
By switching the number 6, the number of rotations of the air supply fan 23 and the exhaust fan 24 is changed to set the normal mode or the reduction mode. Timer means 3
By setting (inputting) the time to switch to 7,
At that time, switch from normal mode to decrease mode,
Conversely, the mode is switched to the decrease mode or the normal mode.

When the mode switch 36 is used,
When the user is present, the mode is switched to the normal mode, and the normal ventilation operation is performed. Then, when the user goes out, that is, when the user is absent, the mode changeover switch 36 is switched to the decrease mode, and the operation in the decrease mode is performed. When the timer means 37 is used, the time when the user is absent and the time when the user returns (returns home) are input to the timer means 37, and at the time when the user is absent, the mode is switched from the normal mode to the decrease mode, ), The mode is switched from the decrease mode to the normal mode. In this case, the switching from the decrease mode to the normal mode may be performed by switching the mode switch 36 without using the timer means 37. Conversely, the mode may be switched from the normal mode to the decrease mode by switching the mode switch 36 without using the timer means 37.

As described above, the mode is reduced when the user is absent, and unnecessary ventilation operation is eliminated, contributing to energy saving. When the mode is switched by the mode switch 36, the mode can be switched by the user, and the operation intended by the user can be performed, which is convenient. When the mode is switched by the timer means 37, the mode is switched at a set time without fail.
There is no need to perform the switching operation, and the problem that the switching operation was forgotten and could not be performed is eliminated.

The constant-ventilation system is provided with the humidity control unit 1 as described above. In the humidity control mode of the humidity control unit 1, the normal humidity control mode and the normal humidity control mode are controlled. It is possible to switch to a humidity control reduction mode having a small humidity capacity. Here, the normal humidity control operation mode is a mode in which the comfortable humidity is set in consideration of the temperature / humidity of the outside air, the user, and the like, and the humidity control reduction mode is
This is about 40% of the normal humidity control operation mode.

By the way, in order to set the humidity control reduction mode, the capacity of the regeneration heating means 4 for warming the regeneration air may be reduced during the dehumidification operation, and the capacity of the humidification heating means 7 may be reduced during the humidification. Should be reduced. For this reason, it is possible to reliably set the humidity control reduction mode regardless of the dehumidifying operation or the humidifying operation. Therefore, similarly to the ventilation amount of the ventilation operation, when the user is absent, the humidity control mode can be set by using the mode changeover switch 36 and the timer means 37. That is, when the mode changeover switch 36 is used, when there is a user, the mode is switched to the normal mode, and the normal humidity control operation is performed. Then, when the user goes out, that is, when the user is absent, the mode changeover switch 36 is switched to the humidity control reduction mode, and the operation in the reduction mode is performed. Timer means 3
In the case of using 7, the time when the user is absent and the time when the user returns (returns home) are input to the timer means 37, and at the time when the user is absent, the mode is switched from the normal mode to the humidity reduction mode and the time when the user returns (returns home). Then, the mode can be switched from the humidity control reduction mode to the normal mode. Therefore, extremely efficient humidity control becomes possible.

Although the specific embodiment of the continuous ventilation system of the present invention has been described above, the constant ventilation system of the present invention is not limited to the above-described embodiment, and may be implemented with various modifications. It is possible. For example,
Even if the humidity control unit 1 does not have a humidifying function,
Conversely, it may not have a dehumidifying function. In addition, as the ventilation mode and the humidity control mode of the humidity control,
The value is not limited to 40%, but may be any value as long as it is reduced from the normal mode. However, if the amount is small, there is no effect of energy saving. May not be. Therefore, it is preferable to set it to about 40% as in the embodiment.

[0031]

According to the constant ventilation system of the first aspect,
Useless ventilation is not performed, and energy saving can be achieved. Moreover, when there is a user, normal ventilation can be performed, so that outdoor air can be supplied to the room. This makes it possible to fill the room with fresh air, and the user feels refreshed.

According to the constant-ventilation system of the second aspect, unnecessary humidity control operation is not performed, and energy saving can be achieved. In addition, when there is a user, the normal humidity control operation can be performed, so that the outdoor air can be supplied to the room and the indoor humidity can be adjusted. This makes it possible to maintain the room in a comfortable space.

According to the constant ventilation system of the third aspect, the mode can be switched by the user, and the operation intended by the user can be performed, which is convenient.

According to the constant ventilation system of the fourth aspect, the mode is reliably switched at the set time.
When the user goes out, there is no need to perform the switching operation of the mode switching switch 36, and the problem that the switching operation is forgotten and cannot be performed is eliminated.

[Brief description of the drawings]

FIG. 1 is an overall simplified diagram showing an embodiment of a constant ventilation system according to the present invention.

FIG. 2 is a simplified diagram of a humidity control unit of the constant ventilation system.

FIG. 3 is a simplified block diagram of a control unit of the constant ventilation system.

[Explanation of symbols]

 1 Humidity control unit 36 Mode switch 37 Timer means

Claims (4)

[Claims] 1. A constant-ventilation system capable of switching between a normal mode of a normal ventilation volume and a reduction mode in which the ventilation volume is smaller than the normal mode, wherein the reduction mode is set when no user is present. And constant ventilation system. 2. A humidity control unit (1) capable of switching between a normal humidity control mode and a humidity control mode having a smaller humidity control capacity than the normal humidity control mode. The constant ventilation system according to claim 1, wherein the humidity control unit (1) is set to a humidity control reduction mode. 3. The constant ventilation system according to claim 1, further comprising a mode changeover switch, wherein the mode changeover switch performs a mode changeover operation. 4. The constant ventilation system according to claim 1, further comprising timer means (37), wherein the mode is switched at a time set by the timer means (37).