JP2017072279A - Heat recovery type class-second 24 hours ventilation system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a class-second 24 hours ventilation system capable of performing heat recovery operation and keeping appropriate humidity.SOLUTION: This invention relates to a class-second 24-hours ventilation system in which a plurality of sets of same shape integral-type ventilators 11, 12 and 13 performing air supply and air discharging repeatedly in sequence for heat recovery are combined to each other. The ventilators have heat storage elements showing heat storage characteristics or humidity sucking or humidity releasing function. The heat storage elements are formed in a cylindrical shape and made of porous ceramics including many ventilation passages. An assembly configuration of the ventilator has an air filter, a blower fan, a heat storage element and an anti-insect meshed air filter from a room indoor side toward an outer wall side. Air supply operation of the ventilator as well as its stopping operation are changed over repeatedly in sequence at a set cycle, the air blower fan is operated only at the time of supplying air and the air discharging is carried out in natural exhaust under positive room pressure through ventilators to constitute an electrical control system for a class-second 24-hours ventilation system.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a configuration and electrical control of a second type ventilation system capable of recovering heat.

In recent years, many of the residents have hoped to provide a safe, secure, healthy and comfortable living space, and the incidental facilities of buildings such as houses have been considerably enhanced.
Among them, as a countermeasure against sick house, it is necessary to supply fresh air into the house and maintain moderate humidity to maintain a healthy and comfortable living space without illness and to protect the housing structure from condensation. One of the housing equipment is a 24-hour ventilation system.

Type 1 ventilation ⇒ Ventilation is performed by a machine (fan) that uses a motor on each of the supply and exhaust sides. Most of these systems are types that exchange heat between exhaust and supply.
Type 2 ventilation ⇒ Only the supply air is ventilated by the machine, and the exhaust becomes natural exhaust due to the pressure that is pushed out. Since the room has a positive pressure (plus), it is difficult for air to flow in from the outside, so it is used in hospital operating rooms and clean rooms in precision machinery factories.
Type 3 ventilation ⇒ Contrary to type 2 ventilation, exhaust is performed by a machine, and the supply air is sucked in naturally. Since the room has negative pressure (minus), it is easy to maintain and has low running cost with low humidity exhaust systems such as bathroom moisture and toilets and kitchens.
Brother 4 type ventilation ⇒ Natural supply air + natural exhaust makes it easy to be affected by temperature difference and wind power because it is supplied and exhausted by natural air flow.
Because it is obliged to install mechanical ventilation under the revised Building Standard Law, it must be used in combination with a ventilation fan.

In recent energy-saving housing ventilation systems, the first type 24-hour ventilation system that collects 80 to 90% of heat by connecting the air supply and exhaust to each system with a duct and exchanging heat and maintaining appropriate humidity is standard. Although it has been installed, it seems that there are few houses to introduce due to its high price.
For this reason, many of the 24-hour ventilation systems installed in houses are inexpensive type 3 24-hour ventilation systems.

Inexpensive existing third-class 24-hour ventilation systems with negative pressure inside the room cannot perform heat recovery or humidity adjustment, so the indoor environment is greatly influenced by changes in the temperature and humidity of the outside air.
In winter, especially in the third type 24-hour ventilation system, we hear that many homes have stopped the 24-hour ventilation system because cold air is directly introduced into the house.
Also, depending on the region, the third type 24-hour ventilation system is cold and dry air is introduced in the winter, and the relative humidity becomes extremely low by heating the air, causing flu epidemics, dry eyes, and excessive dry skin. This is not a human-friendly 24-hour ventilation system.

  Next, the second type 24 hour ventilation system in which the interior space becomes positive pressure is not actually adopted in the house, and the current situation is that the second type is the second type except the first type 24 hour ventilation system. There are three types of ventilation systems that cannot recover heat, and the current situation is that the system is not a 24-hour ventilation system that protects the house from condensation while preventing global warming.

  Providing a type 2 24-hour ventilation system that can recover heat and maintain moderate humidity.

Keeping the winter living environment at moderate temperature and humidity (55-60% at 20 ° C) is an important defense against getting sick from flu, dry eye and excessive skin dryness.
To this end, it is necessary to develop a 24-hour ventilation system technology based on a new and unprecedented idea for people who can maintain a healthy and comfortable living space.

This technological development is the development of important housing equipment that can reduce the risk of illness and reduce or reduce national medical expenses.
The present invention is a low-cost second type 24-hour ventilation system that has never been used so far, which is one of the subjects of the present invention. The purpose is to embody and provide a method.

In order to achieve the above object, the present invention takes the following technical means.
First, it is a second type 24-hour ventilation system that combines a plurality of the same-shape integrated ventilation devices 10 that sequentially repeat supply and exhaust for heat recovery,
The ventilation device 10 incorporates a heat storage element body 15 having both heat storage and moisture absorption / release functions. The overall shape of the heat storage element body 15 is made of a material such as a porous ceramic having a cylindrical shape and a large number of air passages. The ventilation device 10 has an assembly structure that includes an air filter 17, a blower fan 16, a heat storage element body 15, and an air filter with an insect repellent mesh from the indoor side toward the outer wall side. The electric control system of the second type 24 hour ventilation system in which the operation and the stop are sequentially switched and repeated in the set cycle, and the blower fan 16 is operated only during the supply of air, and the exhaust is naturally exhausted through the ventilator 10 by the positive chamber pressure. It was.

  Second, the plurality of ventilators 10 are controlled in a state where the number of air supply operation is the same as the number of stoppages, or the number of air supply operation is greater than the number of stoppages. The electric control system of the second type 24-hour ventilation system according to claim 1, wherein the air supply operation and the stop are sequentially switched and repeated in a set cycle while maintaining the room at a positive pressure.

  Thirdly, in order to stabilize the positive pressure chamber pressure fluctuation, three or more ventilators 10 are used, and an abnormal and sudden room pressure fluctuation from the stable chamber pressure state is detected by a room pressure gauge or an air flow meter. Incorporated into the security system 99 of the house, and incorporating a mechanism that uses the positive pressure to release directly to the atmosphere only with room pressure in the absence of an exhaust fan in the bathroom or toilet room. Further, the electric control system of the second type 24-hour ventilation system according to claim 2 is adopted.

  The present invention can provide environment-friendly housing equipment that is capable of maintaining appropriate temperature and humidity that is healthy and comfortable if it is mounted in an energy-saving house with high airtightness and high heat insulation by a second type 24-hour ventilation system capable of recovering heat.

Air flow and electrical control conceptual diagram of type 2 24 hour ventilation system with 3 ventilation devices Figure of security security system incorporated into air flow and electrical control conceptual diagram of type 2 24 hour ventilation system with 4 ventilation devices

  Embodiments of the present invention will be described below with reference to FIG. 1 and FIG.

FIG. 1 of Example 1 is the first and second technical means, and this second type 24-hour ventilation system 1 has three or more ventilation devices 10 in three or more.
The number of units in which the ventilator 10 is in the air supply operation is always controlled to be larger than the number of units in the stop state, and the electricity is switched and repeated sequentially in the cycle in which the air supply operation and the stop are set while maintaining the room at a positive pressure. The control system 21 is a second type 24-hour ventilation system 1.

It is possible to perform heat recovery and humidity control while maintaining the room at a positive pressure by a system in which an independent ventilation device 10 is attached to a necessary place without being connected to each system by a duct, and the whole is electrically connected and controlled. It becomes 2 kinds 24 hours ventilation system 1.
Therefore, it is not necessary to connect the ventilation device 10 independently at a necessary place, and it is not necessary to connect it with a duct. Therefore, the hygienic, safe and secure ventilation device 10 does not grow and accumulate mold dust and moisture in the air duct. It becomes the 2nd kind 24 hour ventilation system 1 which uses.

As a method of the second type 24-hour ventilation system 1 for maintaining the room at a positive pressure and stabilizing it, it is desirable to install a plurality of ventilation devices 10 with three or more,
The ventilator 10 is controlled in a state where the number of air supply operation is the same as the number of stoppages, or the number of air supply operation is greater than the number of stoppages so that the room is stable. Thus, heat recovery and proper humidity are maintained by sequentially switching and repeating the cycle in which the air supply operation and the stop are set while maintaining the positive pressure.
The ventilation device 10 includes a heat storage element body 15 having both heat recovery and humidity control functions. The heat storage element body 15 has a cylindrical shape made of porous ceramics having many air passages such as a honeycomb shape. Assembling configuration from the indoor side to the outer wall side is the second type 24-hour ventilation system 1 with a simple configuration in which the air filter 17, the blower fan 16, the heat storage element body 15, and the air filter with insect repellent mesh are attached and maintenance is easy. It has become.

The second type 24-hour ventilation system 1 has a mechanism capable of maintaining an appropriate temperature and humidity so that heat recovery and humidity control can be performed by sequentially switching and repeating the cycle in which the air supply operation and the stop are set.
In FIG. 1, three ventilation devices 10 will be described as a combination of 11, 12, and 13.
When the maximum heat volume is supplied or exhausted, the heat accumulated in the heat storage element body just before the heat escapes, that is, when the limit value of the recovered heat capacity is 65 seconds, for example, the air flow direction of the ventilator 10 is 65 seconds or more. If the same state is continued, the heat stored in the heat storage element body 15 breaks and escapes.
Therefore, the heat stored in the heat storage element body 15 returns to the indoor side or the atmosphere side again by reversing the air flow direction within 60 seconds before one step where heat is not released.

For example, referring to FIG. 1, in the combination of three ventilation devices 11, 12, 13,
After 15 seconds at position 1, it switches to position 2, and after 15 seconds it switches to position 3.
By repeating this cycle sequentially, the second type 24-hour ventilation system 1 with high heat recovery efficiency is configured.
Therefore, in the case of the three ventilation apparatuses 10, the air supply operation is 60 seconds and the stop is 15 seconds.

The electric control system 21 using a microcomputer or the like in which the three ventilators 11, 12, and 13 are sequentially switched within 60 seconds of the set cycle to repeat the air supply operation and the stop is as follows.
Air supply operation / stop Ventilator 11 Ventilator 12 Ventilator 13
(Position 1) Cycle 1 ○ X ○
(Position 2) ○ ○ X
(Position 3) X ○ ○
Cycle 2 ○ X ○
○ ○ X
X ○ ○
Cycle 3 ○ X ○
○ ○ X
X ○ ○
Air supply operation for 15 seconds with display ○ Stop for 15 seconds with display X

FIG. 2 of Example 2 is the second type 24-hour ventilation system 1 using the third technical means and has a plurality of three or more ventilation devices 10.
The second embodiment of FIG. 2 will be described using a combination of four ventilators 10, for example, 11, 12, 13, and 14.
The ventilator 10 of the second type 24-hour ventilation system 1 is controlled as follows by an electric control system 22 using a microcomputer or the like that is sequentially switched every 60 seconds of the setting cycle and repeats the air supply operation and the stop.
Air supply operation / stop Ventilator 11 Ventilator 12 Ventilator 13 Ventilator 14
(Position 1) Cycle 1 X X X X
(Position 2) X X X
(Position 3) XX X X
(Position 4) ○ X X ○
Cycle 2 ○ ○ XX
X X X
X X X X
○ XX ○
Cycle 3 ○ ○ XX
X X X
X X X X
○ XX ○
Air supply operation for 15 seconds with display ○ Stop for 15 seconds with display X

In the combination of four ventilators 11, 12, 13, and 14, the position 1 is switched to position 2 for 15 seconds, then to position 2, 15 seconds later to position 3, and 15 seconds later position 4 It becomes.
By repeating this cycle sequentially, the second type 24-hour ventilation system 1 with high heat recovery efficiency is configured.
Therefore, the four ventilators 11, 12, and 13.14 have a supply operation of 60 seconds and a stop of 60 seconds.

  The third technical means, the second embodiment, adds a crime prevention security system to the first embodiment and increases the number of ventilation devices 10 installed, so that the exhaust of the bathroom and toilet can be exhausted without an exhaust fan. It shows a conceptual diagram of the mechanism for direct atmospheric discharge through only the room pressure.

  FIG. 2 illustrates the security system detector 99, the bathroom exhaust port 71, and the toilet exhaust port 81. In particular, it is not possible to recover the heat present in the humid bathroom exhaust or odorous toilet exhaust. If it is effective and a return on investment is expected, it is preferable to install a heat exchanger that recovers only heat by a method that does not mix this exhaust and fresh air, although it is not shown in FIG.

Next, the security guard system detector 99 can accurately detect an abnormality if the house pressure gauge or the anemometer is effective and stable in order to function stably.
For example, it is a low-cost crime prevention security system that can be easily managed in the event of an abnormality such as a broken window or door in the opening.
In addition, it is preferable to attach the room pressure gauge or the anemometer of the security guard system detector 99 to a place or position that is not affected by disturbance such as wind of the outside air.

  In addition, the details of the electric control system 22 that sequentially switches in the set cycle and repeats the air supply operation and the stop are the same as those in the first embodiment, and the description thereof is omitted.

Note that the cycle set in Example 1 and Example 2 is the limit of the recovered heat capacity, that is, the heat accumulated immediately before the heat stored in the heat storage element body 15 escapes with the air supply amount or the exhaust amount at the maximum air volume. The value is assumed to be 65 seconds.
Therefore, in the case of the ventilator 10 that can switch between three stages of the maximum air volume, the medium air volume, and the light air volume, the electric control method 21 or 22 that extends the medium air volume or the light air volume and the setting cycle may be used.

  If it is a type 2 24-hour ventilation system that can recover heat and keep the indoor space at a positive pressure, air mixed with chemicals such as ant-repellent coating that protects the structure from termite damage and VOC from building materials that are kind to the global environment Because it does not enter the living room, it is possible to make it one step closer to building a house that does not cause illness. As a result, there is a great possibility that it will lead to a reduction in national medical expenses.

1 second type 24 hour ventilation system 10, 11, 12, 13, 14, ventilation device 15, heat storage element body 16, blower fan 17, air filters 21, 22, electric control method 61, attic exhaust port 71, bathroom exhaust port 81, toilet outlet 99, security system detector

Claims (3)

A second type 24-hour ventilation system that combines multiple ventilation devices 10 of the same shape that sequentially repeat supply and exhaust for heat recovery,
The ventilation device 10 has a built-in heat storage element body 15 having both heat storage and moisture absorption / release functions.
The overall shape of the heat storage element body 15 is made of a material such as porous ceramics having a cylindrical shape and a large number of air passages,
The construction of the ventilation device 10 includes an air filter 17, a blower fan 16, a heat storage element body 15, and an air filter with an insect repellent mesh from the indoor side toward the outer wall side.
The air supply operation and stop of the ventilator 10 are sequentially switched and repeated in the set cycle, the blower fan 16 is operated only during the air supply, and the exhaust is naturally exhausted through the ventilator 10 by the positive pressure of the room pressure. Electrical control system of the ventilation system. The plurality of ventilators 10 are controlled in a state where the number of air supply operation and the number of stopped operation are the same, or the number of air supply operation is greater than the number of stopped operation,
The electric control system of the second type 24-hour ventilation system according to claim 1, wherein the air supply operation and the stop are sequentially switched and repeated in a set cycle while the room is kept at a positive pressure. In order to stabilize the positive pressure chamber pressure fluctuation, it is composed of three or more ventilation devices 10,
Detects abnormal and sudden changes in room pressure from a stable room pressure state with a room pressure gauge or an air flow meter and incorporates it into the security system 99 of the house, and also uses a positive pressure in a room without an exhaust fan in the bathroom or toilet room The electric control system for the second type 24-hour ventilation system according to claim 1 or 2, wherein a mechanism for directly releasing air into the atmosphere only by pressure is adopted.

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