JP2011052904A - Ventilation system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To save resources and electric power consumption of a power source requiring large electric power when ventilation and air conditioning are performed, and to perform efficient ventilation. <P>SOLUTION: A ventilation system includes: an air exhaust route for discharging indoor air to the outside; a suction route for sucking outside air to an indoor side; a ventilation power part provided on the air exhaust route, performing air conditioning of the indoor air and forcibly discharging air passing through an air discharge route to the outside; an intersection part arranged in a position where the air discharge route and the suction route are adjacent to and intersected with each other and performing heat exchange by coming into contact with exhaust air made to flow in the air discharge route and suction air made to flow in the suction route; a heat exchange part arranged on the suction route, connected between an outside air suction port to which outside air is introduced and the intersection part and controlling the temperature of the outside air; a temperature monitoring part for measuring the temperatures of the indoor side, the outside air suction port and heat exchange part; and a ventilation control part for controlling the ventilation power part based on the temperatures measured by the temperature monitoring part. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an air conditioning apparatus that performs indoor air conditioning, and a ventilation system that includes a heat exchanger for performing heat exchange between outside air supplied to the room and air discharged from the room.

In recent years, it has become a problem that chemical substances used in houses have an effect on the human body, so the law requires that the house be ventilated (legal ventilation).
That is, it is obliged to replace room air with fresh outside air at a rate of about once every two hours, and a device capable of performing such statutory ventilation has been incorporated into a house. As a result, vaporized diffusion gases such as chemical substances used in houses can be discharged outside the house.
On the other hand, global warming is progressing in the environment surrounding the earth, and the emission of carbon dioxide on the earth is taken up as one of the major factors.

  However, in order to realize the mandatory ventilation as described above, the energy used for the power of ventilation increases, so the emission of carbon dioxide increases on the contrary, and the changes in indoor temperature and humidity due to ventilation are controlled. For this reason, the amount of energy used by air conditioners, heaters, etc. has increased, and there is a conflict between ventilation and energy saving in houses, including support for sick houses. Under these circumstances, in order to achieve both energy-saving ventilation and energy-saving, the ventilation and air-conditioning operations using cold heat in the house are efficiently and meticulously used with as little resource material as possible (such as a blower). The importance of controlling is increasing.

Conventionally proposed air conditioning and ventilation systems include, for example, the following.
In Patent Document 1, an indoor unit and an outdoor unit for exchanging heat between indoor air and outdoor air are provided, a ventilation fan that exhausts indoor air from the ventilation port of the indoor unit, and an outdoor air intake port of the outdoor unit. An air conditioner that provides an outdoor fan that sucks in outside air and directs and discharges exhaust air from the room to the outside air intake port using an exhaust duct, thereby mixing the exhaust air into the outside air and realizing energy saving Has been proposed.
Further, Patent Document 2 is a system that centrally controls the operation of a plurality of facilities such as a ventilation fan and an air conditioner installed in a necessary place such as a living room, and provides several basic pattern modes corresponding to real life, A residential facility centralized control system that realizes energy saving by performing ventilation and air conditioning by operating a plurality of facilities in a predetermined mode has been proposed.

  Further, in Patent Document 3, a solar heat collecting part is provided directly below the roof plate, the outside air heated in the daytime in winter is guided to the air circulation space, three kinds of heating are performed, and in the daytime in summer, By operating the heat collection fan to send indoor air to the heat collection duct under the roof and exhausting it from the air intake, the roof is cooled and exhausted at the same time. A passive solar system house that efficiently uses solar energy and ventilates by driving a heat fan to take in cold air at night and also radiating cooling from the roof surface to store in cold concrete is proposed Has been.

JP-A-6-123443 JP 2002-130772 A JP 2005-291594 A

  However, in the thing shown in patent document 1, since the outdoor fan for air conditioning and the fan for ventilation are provided separately, and each uses different motive power, there is much waste both in material and energy. . In addition, air conditioner indoor fans and ventilation fan fans increase the noise generated indoors. When the whole room is ventilated once every two hours as required by law, the number of air conditioners used for air conditioning and the number of fans used for ventilation increase and the power increases, so it is used for motors and fans. There is a high possibility that the amount of resources to be increased and the energy consumption will increase, which is contrary to energy saving.

  Moreover, since the system shown in Patent Document 2 operates the air conditioner while ventilating the indoor air, it is a system that immediately exhausts the air after air-conditioning using a lot of energy. . In ventilation and air conditioning, exhausting air that has remained in the room for a long time and air-conditioning air that has been taken in from the outside is efficient ventilation and air conditioning. Because it is mixed, it is wasteful. In addition, if ventilation is to be performed once every two hours required by the amendment of the law, the system that performs ventilation when the air-conditioning equipment is simply stopped as in the conventional case will provide sufficient ventilation as required. I can't.

Furthermore, Patent Document 3 attempts to efficiently realize heating using solar heat and cooling using summer radiant cooling. However, it is difficult to perform sufficient cooling especially by summer radiant cooling alone.
In addition, air-conditioning systems that use geothermal heat can be considered, but there are still systems that can effectively use geothermal heat throughout the year in spring, summer, autumn, and winter by sensing the temperature of each cold heat source that uses geothermal heat. Not realized.

FIG. 23 is an explanatory diagram of a schematic example of conventional ventilation.
FIG. 23A shows an image in which the outside air corresponding to the ventilation air exhausted from the gaps such as walls and doors is supplied to the room with respect to the exhaust of the room air.
Since the heat exchange between the indoor exhaust air and the inflow air is not performed, the outdoor air whose temperature is not adjusted is directly supplied to the room, so that it is necessary to adjust the temperature again and the efficiency is low.
FIG. 23B shows an example in which outside air is sucked into the room through the ground with respect to intake of outside air by ventilation. Although the efficiency is somewhat higher than in FIG. 23 (a), the temperature is required after being supplied indoors because it is a result of the underground temperature.
FIG. 23C is an example in which exhaust and intake are performed in the vicinity of the ventilation fan.
Since almost no heat exchange is possible between the intake air and the exhaust air, it is necessary to air-condition the room supply air again.
In any conventional ventilation system, it is necessary to use a lot of energy to air-condition indoor intake outside air by ventilation, and it is necessary to consider energy saving of air conditioning.

  Therefore, the present invention has been made in consideration of the above circumstances, and a ventilation system capable of realizing resource saving and energy saving than before by reducing power sources such as a fan and a motor for performing ventilation and air conditioning. It is an issue to provide.

  The present invention is arranged on an exhaust path for exhausting indoor air to the outside, a suction path for sucking outside air into the room, and an exhaust path for air conditioning the room air and forcing the air that has passed through the exhaust path to the outside The ventilation power section that discharges the exhaust air, the exhaust path and the suction path are disposed adjacent to each other, intersecting the exhaust air flowing through the exhaust path and the intake air flowing through the suction path, and performing heat exchange, and the suction A heat exchanging unit that adjusts the temperature of the outside air connected between the outside air inlet to which the outside air is introduced and the intersection, an indoor space, the outside air inlet, and the heat exchanging unit. The present invention provides a ventilation system comprising: a temperature monitoring unit that measures temperature; and a ventilation control unit that controls the ventilation power unit based on the temperature measured by the temperature monitoring unit.

  According to this, it is equipped with a ventilation power unit that air-conditions indoor air and forcibly exhausts air that has passed through the exhaust path to the outside, and ventilation and air conditioning are performed, so it is necessary to provide a power source dedicated to ventilation Rather, it is possible to save resources and power consumption of the power equipment used for ventilation processing.

The ventilation power unit is an outdoor unit heat exchanger fan (ventilation fan) of an air conditioner, and is provided between the intersection provided on the exhaust path and an external exhaust port for exhausting air to the outside. It is characterized by that.
By using a commonly used outdoor unit heat exchanger fan for air conditioning equipment as the ventilation power unit, both air conditioning and ventilation can be performed with a single ventilation fan. As compared with the case where the power source is used, resource saving and power saving can be achieved.

The intersection is in an area where the exhaust path and the suction path are arranged in parallel, and the internal and external heat contacts both the exhaust air flowing through the exhaust path in the area and the intake air flowing through the suction path. It is characterized by having an exchanger.
According to this, since the temperature is adjusted by heat exchange between the intake air and the exhaust air, a more efficient ventilation process can be performed.

Furthermore, the heat exchange unit includes at least one heat exchanger among a ground heat exchanger, a bath heat exchanger, and a roof heat exchanger.
Here, when the heat exchanging unit is composed of a plurality of heat exchangers, the heat exchanging unit further includes a path switching unit that switches a heat exchanger that is connected to a suction path between the outside air suction port and the intersection. The intake air after the temperature is adjusted by the exchanger is guided to the intersection.
Thereby, since the temperature of suction air is adjusted, more efficient ventilation processing can be performed.

Further, the temperature monitoring unit measures the temperature of each heat exchanger of the heat exchange unit, and the ventilation control unit heats connected to the suction path based on the measured temperature difference of each heat exchanger. The exchanger is determined, and the determined heat exchanger is connected to the suction path by the path switching unit.
In addition, a storage unit that stores initial ventilation information in which a time schedule for controlling the ventilation power unit and the path switching unit is set, and the ventilation control unit, based on the initial ventilation information, A predetermined statutory ventilation process is performed by controlling the unit and the path switching unit.

Furthermore, it further comprises a device monitoring unit that detects the operation and stop of the air conditioning device, and the ventilation control unit is set according to the initial ventilation information when the device monitoring unit detects that the air conditioning device is operating. It is characterized in that the suspended ventilation process is suspended without being executed, and the suspended ventilation process is performed when the subsequent air conditioner is stopped.
As a result, the air-conditioning operation and the ventilation operation can be executed so as not to overlap in the same time zone, so that more efficient air-conditioning and ventilation processing can be executed, and power consumption can be further reduced.

The air conditioner is any one of an air conditioner, an electric heater, an oil heater, and a gas heater.
Here, when the air conditioning device is an air conditioner or an electric heating device, even when the device monitoring unit detects that the air conditioning device is operating in order to execute a predetermined legal ventilation process. The ventilation process may be continued without being suspended.
In addition, when the air conditioner includes an oil heating device or a gas heating device, the device monitoring unit detects that the oil heating device or the gas heating device is operating when SHAPE \ * MERGEFORMAT. The ventilation process may be executed separately from the time schedule set by the initial ventilation information.
According to this, even if the heating device is operating for a long time, ventilation can be prevented from becoming insufficient.

  According to the present invention, the ventilation power unit that performs both the ventilation process and the air conditioning control is disposed on the exhaust path, and the air conditioning of the room air and the air that has passed through the exhaust path are forcibly discharged to the outside. Ventilation is performed, and furthermore, an intersection is provided at a position where the exhaust path and the suction path are adjacent to each other, and heat exchange is performed by contacting the exhaust air and the suction air at this intersection. It is not necessary to provide a dedicated power source for ventilation, and it is possible to save resources and power consumption of equipment used for ventilation processing.

It is a schematic block diagram of one Example of the house provided with the ventilation system of this invention. It is a block diagram of one Example of the roof heat exchanger of this invention. It is a block diagram of one Example of the roof heat exchanger of this invention. It is a block diagram of one Example of the bath heat exchanger of this invention. It is a block diagram of one Example of the bath heat exchanger of this invention. It is explanatory drawing of the initialization ventilation pattern of this invention. It is explanatory drawing of the ventilation pattern 2 of this invention. It is explanatory drawing of the ventilation pattern 3 of this invention. It is explanatory drawing of the ventilation pattern 4 of this invention. It is a flowchart of one Example of the ventilation control of this invention. It is a flowchart of one Example of the ventilation process of this invention. It is a flowchart of the ventilation process of spring / autumn mode A of this invention. It is a flowchart of the ventilation process of summer mode B of this invention. It is a flowchart of the ventilation process of summer mode C of this invention. It is a flowchart of the ventilation process of winter mode D of this invention. It is a flowchart of the ventilation process of winter mode E of this invention. It is a flowchart of the ventilation process of the summer mode F of this invention. It is a graph of one Example of the temperature change profile in Example 4 of this invention. It is a graph of one Example of the temperature change profile of a conventional ventilation system. It is a graph of one Example of the temperature change profile in Example 5 of this invention. It is a graph of one Example of the temperature change profile in Example 8 of this invention. It is a graph of one Example of the temperature change profile of a conventional ventilation system. It is a graph of one Example of the temperature change profile in Example 6 of this invention. It is a graph of one Example of the temperature change profile in Example 7 of this invention. It is explanatory drawing of the schematic example of the conventional ventilation. It is a schematic block diagram of an embodiment of the ventilation system of the present invention. It is explanatory drawing of one Example of the path | route through which the apparatus regarding ventilation of this invention and air flow.

<Overview of the ventilation system of the present invention>
FIG. 24 shows a schematic block diagram of an embodiment of the ventilation system of the present invention.
As shown in FIG. 24, the ventilation system of the present invention mainly operates the ventilation control unit 101 (hereinafter also referred to as a control unit), the temperature monitoring unit 102 (hereinafter also referred to as a temperature sensor), and the air conditioner 105. A device monitoring unit 104 to be monitored, a ventilation power unit 106 (hereinafter also referred to as a ventilation fan), a path switching unit 107 (hereinafter also referred to as a branching damper or a damper) for switching a passage of air to be ventilated, and a storage unit 110 (hereinafter referred to as a damper). , Also referred to as a memory) and a heat exchanging unit HE.

Although not shown in FIG. 24, an exhaust path and a suction path as shown in FIG. 25 are provided, and a position where the exhaust path and the suction path are adjacently intersected is referred to as an intersection 14.
At this intersection 14, heat exchange is performed between the exhaust air flowing through the exhaust path and the intake air flowing through the suction path.
Adjacent intersection means that the pipe (duct) that forms the exhaust path and the pipe (duct) that forms the suction path are arranged at adjacent positions, and the exhaust air and the suction air do not cross each other directly. The arrangement is such that the wall surfaces of the two pipes are in contact with each other so that heat can be exchanged between the two airs.
The intersection 14 is in a region where the exhaust path and the suction path are arranged in parallel.
An internal / external heat exchanger HE4 that contacts both the exhaust air flowing through the exhaust path in the region and the intake air flowing through the suction path is provided.

The ventilation control unit 101
This is a part that performs ventilation processing by monitoring and controlling the operation of the members constituting this system, and is realized by, for example, a microcomputer equipped with a CPU, ROM, RAM, I / O controller, timer, and the like.
Here, the CPU executes various functions of the present invention by organically operating various hardware based on a control program stored in a ROM or the like.
For example, the ventilation control unit 101 controls the ventilation power unit 106 based on the temperature measured by the temperature monitoring unit 102 and executes a function of performing ventilation processing.

The temperature monitoring unit 102 is a part that measures the temperature of the room, the temperature of the outside air inlet into which the outside air is introduced, and the temperature of the temperature monitoring device 103 or the surroundings of the temperature monitoring device 103. For example, a platinum resistance thermometer (thermocouple) A temperature sensor such as copper constantan (thermocouple) is used.
The temperature monitoring device 103 means, for example, an air conditioner outdoor unit, an outside air inlet (outside air inlet), a ground heat exchanger, a bath heat exchanger, a roof heat exchanger, etc. It is.
However, you may measure the temperature of apparatuses other than this.
The measured temperature is sent to the control unit 101 and stored in the memory 110 as temperature data 114.

Here, the temperature inside the house is the room temperature (Tin),
The outside air inlet temperature is the outside air temperature (Tout),
Geothermal temperature (Tci), the temperature of the underground heat exchanger
The bath heat exchanger temperature is the bath temperature (Tfu),
The temperature of the roof heat exchanger is called the roof temperature (Tya).

The equipment monitoring unit 104 is a part that monitors the operation of the air conditioning equipment 105.
It is a part that mainly monitors whether each air conditioner is operating (ON state) or stopped (OFF state).
The air conditioner 105 means, for example, an air conditioner, an electric heater, an oil heater, a gas heater, or the like.
The operating state of each device is sent to the control unit 101 and stored in the memory 110 as device monitoring information 113.

The ventilation power unit 106 is a part that is disposed on the exhaust path and forcibly discharges the air that has passed through the exhaust path to the outside. (Also called outdoor unit fan).
In this case, the ventilation fan is provided between the intersection 14 provided on the exhaust path shown in FIG. 25 and the external exhaust port 15 that exhausts air to the outside.

In the present invention, this ventilation fan 106 is the only power source as a member used for both the air conditioning and ventilation processes, and it is preferable to use one to save resources and save energy.
In a house where a plurality of air conditioners are installed, a plurality of outdoor units and a plurality of ventilation fans are installed, but only one ventilation fan that performs both air conditioning and ventilation is required.
Therefore, in the present invention, the power source dedicated to ventilation and the power source dedicated to air conditioning are not provided as separate hardware, but only one power source that performs both functions of ventilation and air conditioning is provided. And
The ventilation power unit 106 receives an instruction signal from the control unit 101 and is operated and stopped.

The path switching unit 107 is a part that switches an air passage, and is a switching device (branch damper) provided at a branch portion of an air passage (duct) that is provided in advance as a housing facility.
In this invention, although the heat exchange part HE is provided, when the heat exchange part HE consists of a plurality of heat exchangers, the heat exchange connected to the suction path between the outside air inlet (9, 11) and the intersecting part 14 A part for switching the device is a path switching unit (branch damper) 107.

As shown in FIG. 25, the heat exchanging unit HE is on the suction path, and is connected to the outside air inlet (9, 11) through which the outside air is introduced and the crossing unit 14. Here, temperature adjustment of the outside air is performed.
The heat exchange unit HE includes, for example, at least one heat exchanger among a ground heat exchanger, a bath heat exchanger, and a roof heat exchanger, and is exchanged by the path switching unit 107 to the suction path. A vessel is selected. Here, underground heat exchangers, bath heat exchangers, and roof heat exchangers are described. However, if the house has other available cooling heat sources, a heat exchanger with the heat sources is added and further added. Many routes can be created and controlled.
Further, the outside air after temperature adjustment is guided toward the intersection 14 by the heat exchanger connected to the suction path by the switching operation of the path switching unit 107. When there are a plurality of heat exchangers, the path switching unit 107 includes a plurality of branch dampers.

The position at which the branch damper is provided differs depending on the structure of the house and cannot be determined uniquely. It is provided in the middle of a route (hereinafter also referred to as an exhaust route).
Each branch damper of the path switching unit 107 is also operated by an instruction signal from the control unit 101. For example, a branch damper is opened in response to an open signal from the control unit 101, and a branch damper is closed in response to a close signal.

For example, the temperature monitoring unit 102 measures the temperature of each heat exchanger of the heat exchange unit HE, and the ventilation control unit 101 exchanges heat with the suction path based on the measured temperature difference of each heat exchanger. After determining the heat exchanger, a connection switching signal is sent to the path switching unit 107, the branch damper of the path switching unit 107 is switched according to the signal, and the determined heat exchanger is connected to the suction path.
Damper control information 115 is stored in the memory 110 as information indicating how the branch damper is currently controlled.

The storage unit 110 means a storage medium such as a ROM, a RAM, a hard disk, a CD, or a DVD, and stores various information.
In the present invention, mainly, initial ventilation information 111, actual ventilation information 112, equipment monitoring information 113, temperature data 114, damper control information 115, a control program, and the like are stored.

Here, the initial ventilation information 111 is time schedule information indicating how to monitor and control the devices constituting the ventilation system. For example, when the temperature monitoring unit 102 and the device monitoring unit are in the day The monitoring information from 104 is acquired, and it is the information of the ventilation pattern which showed at what timing the operation | movement and switching of the ventilation power part 106 and the path | route switching part 107 are performed.
This information 111 may be fixedly stored in the ROM as a typical ventilation pattern assumed in advance. However, a plurality of ventilation patterns such as seasonal ventilation patterns and user-preferred ventilation patterns may be stored so that the user can freely change the settings at any time. It is also possible to change the setting from the outside connected to the Internet. Here, the configuration is not limited, and a home energy management system (HEMS) may be obtained by acquiring information such as opening / closing of windows, entrance doors, and doors, and controlling the ventilation operation.
When a plurality of ventilation patterns are stored, conditions for automatically selecting each ventilation pattern may be stored in the memory, or the user may be able to select a ventilation pattern to be adopted.

  The actual ventilation information 112 is information that stores the execution results after actually monitoring each device. For example, how and when the ventilation fan and the damper are operated during a certain day. It consists of the information shown. Specific examples of such information will be described later.

In FIG. 25, in the ventilation system of this invention, the explanatory drawing of one Example of the path | route through which the apparatus and air which concern on ventilation flow is shown.
In the residential room 1, air conditioners such as an air conditioner indoor unit and various heating devices are arranged, but are omitted in FIG. Moreover, although the connection part of the exhaust path connected to the room | chamber 1 and the suction path is each illustrated as one place, it is not restricted to this, For example, you may provide for every room.
In FIG. 25, it is assumed that the heat exchanger HE includes three of the underground heat exchanger HE1, the bath heat exchanger HE2, and the roof heat exchanger HE3.
The inside / outside heat exchanger HE4 is arranged at the boundary between the outside of the house and the inside of the house in the air path. It is a device that contacts both the outside air (intake air) introduced through the air and the indoor air (exhaust air) discharged to the exhaust path, and performs heat exchange between them.
These heat exchangers are made of a material having a high thermal conductivity and a material having a large heat transfer area, and only heat is transferred by exhaust air and suction air having a temperature difference, and no power source is required.

The main flow of air in FIG. 25 will be described as follows.
First, the indoor air A1 is led to the internal / external heat exchanger HE4 via the indoor exhaust port 3, and further passes through the branch damper V1 and enters the air conditioner outdoor unit 4, where the air conditioner heat exchanger 5 therein is connected. Then, it is exhausted as external air (A2-3) from the external exhaust port 15 by the ventilation fan 6. This indoor air exhaust route is a one-way air flow as shown in the figure when the ventilation fan 6 is in operation.
On the other hand, in FIG. 25, two external air suction routes are shown. A route for taking in outside air (A2-1) from the first outside air inlet 9 and a route for taking in outside air (A2-2) from the second outside air inlet 11.
The branch damper V6 is one of path switching units for deciding which route to take in outside air, and is for guiding outside air taken in from either route to the inside / outside heat exchanger HE4. is there.

Here, the first outside air suction route takes outside air (A2-1) from the first outside air suction port 9 and sends it to the heat exchanging unit HE, where the outside air (A2-1) subjected to predetermined heat exchange. Is led toward the branch damper V6, and when the branch damper V6 is opened toward the first outside air suction route, it is sent to the inside / outside heat exchanger HE4 and introduced into the room from the outside air intake port 2 It becomes indoor air A1.
Further, the second outside air suction route takes outside air (A2-2) from the second outside air suction port 11 and guides it toward the branch damper V6, and the branch damper V6 is opened toward the second outside air suction route. If it is, this outside air (A2-2) is sent to the inside / outside heat exchanger HE4, introduced into the room through the outside air intake port 2, and becomes room air A1.

The reason for providing two outside air suction routes in this way is that the outside air temperature differs mainly depending on the season, so that even if the temperature difference between the room temperature and the outside air temperature is different and heat exchange is unnecessary, efficient ventilation can be performed. It is to make it.
Here, efficient ventilation is a loss due to pressure loss by shortening the outside air intake path length (shortcut) when the temperature difference between the room temperature and outside air temperature is small and temperature adjustment of the outside air by heat exchange is unnecessary. This means that the efficiency of the ventilation power unit (ventilation fan) is improved.
However, the outside air suction route is not limited to two as shown in FIG. 25, and may be one, or may be provided with three or more routes.
For example, in the case where three or more routes are provided, separate external air suction routes connected to the three heat exchangers (HE1, HE2, HE3) are provided in parallel, and the route is connected to the internal / external heat exchanger HE4 by the branch damper. May be selected.

Although three heat exchangers (HE1, HE2, HE3) are shown as the heat exchanger HE, how to connect these heat exchangers to the path between the first outside air inlet 9 and the branch damper V6. Whether to do so is not uniquely determined.
For example, the connection of the heat exchanger and the arrangement of the dampers (V2 to V5) shown in FIG. 1 are one example, and the present invention is not limited to this.

In the heat exchanger, either raising or lowering the temperature of the sucked outside air is performed by a natural air flow without a power source.
Whether the outside air temperature is raised or lowered depends on which heat exchanger is connected to the outside air suction route.
Specific examples of the connection will be described later in the following embodiments.

  As described above, according to the present invention, the indoor air exhaust path and the outside air suction path are arranged, and the air flowing through the suction path and the suction path is brought into contact with each other in the internal / external heat exchanger HE4 at the intersection. By using the ventilation fan arranged in the air, air is efficiently ventilated and air-conditioned.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, this invention is not limited by description of the following examples.

<Configuration of ventilation system of the present invention>
FIG. 1 shows a schematic diagram of an embodiment of a house provided with the ventilation system of the present invention.
Reference numeral 1 denotes a house.
Reference numeral 3 denotes an indoor exhaust port, which is an opening for exhausting indoor air to the outside.
Reference numeral 2 denotes an outside air intake for taking outside air into the room.
Reference numeral 4 denotes an air conditioner outdoor unit.
The outdoor unit 4 is connected to an indoor unit 7 of an air conditioner via a compressor 8 and a four-way valve V7 that switches a refrigerant circulation direction.
Inside the outdoor unit 4 are a heat exchanger 5 (air conditioning heat exchanger) for heat exchange of the outdoor unit, a ventilation fan 6 for blowing air to the heat exchanger 5 and indoor ventilation, and a temperature in the control unit 12. A temperature sensor SE7 for sending a signal is provided.

Reference numeral 10 denotes an electric heating device that heats a room such as an electric stove or an electric carpet.
SE <b> 9 is a temperature sensor provided in the electric heating device 10, and sends a signal indicating the temperature and the operation status of the device to the control unit 12.
Reference numeral 13 denotes a gas oil heater such as a gas fan heater or an oil fan heater.
The electric heating device 10 and the gas oil heating device 13 are connected to a signal line for transmitting a signal for notifying the control unit 12 of the operation state and a signal for operation control sent from the control unit 12. Yes.

The outside air intake path into the room is 2 at the branch damper V2 through the underground heat exchanger HE1 embedded in the ground from the first outside air inlet 9 (first intake) having the outside temperature sensor SE2. Fork. Here, one is connected to the roof heat exchanger HE3 and the bath heat exchanger HE2.
The other is connected to a common outlet of the roof heat exchanger HE3 and the bath heat exchanger HE2 by a branch damper V5.
The branch damper V5 is connected to the second outside air inlet 11 (second inlet) and is also connected to the outside air inlet 2 into the house.

<Roof heat exchanger HE3>
The schematic explanatory drawing of one Example of a roof heat exchanger is shown in FIG. 2 and FIG.
The heat exchanger HE3 shown in FIG. 1 is a roof heat exchanger, and as shown in FIG.
FIG. 2 shows a heat exchanger (HE3) 24 provided on the roof. A condensing unit 28 made of glass or the like is disposed on the surface of the heat exchanger 24. Heat exchange is performed between sunlight and air in the duct.
Further, 22 is an air supply port, and 21 is an air discharge port warmed by heat exchange.
A cross-sectional view of the heat exchanger 24 is shown on the right side of FIG. Here, 26 is a heat insulating material, and 27 is a heat storage material formed from a material such as stainless steel.
The condensing part 28 is formed from light-resistant materials, such as glass 25 and an acryl.

FIG. 3 shows the case of the heat exchanger (HE3) in which the entire roof is composed of the heat exchange material 23.
In FIG. 2 and FIG. 3, air is configured to flow directly through the heat exchanger. However, once heat is stored in a heat storage material (water, metal, chemical substance having a large heat capacity), heat may be exchanged with air.
Moreover, although the heat exchanger 24 is located outside the roof in FIGS. 2 and 3, it may be located behind the ceiling.
SE4 in FIG. 1 is a temperature sensor and measures the temperature in the heat exchanger 24. Further, the measured temperature signal is sent to the control unit 12 for comparison with the temperature of another heat exchanger provided in another intake air flow path.

<Bath heat exchanger HE2>
4 and 5 show an embodiment of the bath heat exchanger.
HE2 in FIG. 1 is a bath heat exchanger that exchanges heat between outside air and remaining bath water (or bath water) provided so that heat can be exchanged with bath water in the bath.
This is a heat exchanger for exchanging heat between the residual heat of the remaining hot water in the bath and the outside air taken in from the first outside air inlet 9.
In FIG. 4, a heat exchange bellows 32 is attached to a bath tub 31 and is insulated by urethane foam 35 or the like. In FIG. 4, 33 is an air inlet and 34 is an air outlet.

In FIG. 5, the heat exchanger HE <b> 2 is provided next to the bath tub, and bath water directly contacts the periphery of the heat exchanger, and the periphery is covered with a heat insulating material 35.
The heat exchanger HE2 mainly functions as follows.
For example, when the outside air is lower than room temperature, such as at night in winter, the cold outside air is heat-exchanged with the remaining heat of the hot water remaining in the bath, and the outside air is supplied into the room.
In addition, when the outside air is higher than room temperature during the summer daytime, the warm outside air is heat-exchanged with bath water (or remaining hot water), and the outside air is supplied into the room.
SE3 in FIG. 1 is a temperature sensor, measures the temperature in the heat exchanger HE2, and sends the measured temperature signal to the control unit 12.

<Ground heat exchanger HE1>
HE1 in FIG. 1 is a heat exchanger installed in the ground, and exchanges heat between the outside air taken in from the first outside air inlet 9 and the earth heat and sends outside air into the room.
The heat exchanger HE1 is installed at a depth of about 5 m in the ground, and uses a metal material such as stainless steel or a resin material such as vinyl chloride with little corrosion. However, it is desirable to use a material that has as good a thermal conductivity as possible and can be structurally thinned to shorten the heat transfer distance.
The heat exchanger HE1 mainly functions as follows.
When the outside air temperature is high in summer, the temperature in the ground is lower than the outside air. Therefore, ventilation is performed at a temperature slightly lower than the outside air by the heat exchanger HE1.
When the outside air temperature in winter is low, the temperature is higher than the outside air in the ground, so that the heat exchanger HE1 ventilates at a temperature slightly higher than the outside air.

<Indoor / external heat exchanger HE4 at the indoor ventilation air inlet / outlet>
1 is a heat exchanger provided at a position close to the room. The indoor air that is relatively close to the indoor set temperature exhausted from the room via the room exhaust port 3 and the outside air that is taken into the room via the outside air inlet 2 are the heat exchangers (HE1, HE2, HE3) described above. This is a place where the heat is finally exchanged with the air supplied to the room in a state closer to the room temperature than the outside air by exchanging heat with underground heat, hot water remaining in the bath, solar heat and the like.
Since this HE4 does not have an extremely large temperature difference between the outside air intake air and the indoor exhaust air, a material that has as large a heat transfer area as possible, a high thermal conductivity, and excellent corrosivity is desirable.
In addition, since the pressure loss increases when the cross-sectional area of the flow path is narrow, it is preferable to have an appropriate cross-sectional area of the flow path.

As shown in FIG. 1, the heat exchanger HE <b> 4 is provided in a flow path between the indoor exhaust port 3 and the air conditioner outdoor unit 4. In general, the wider the cross-sectional area, the slower the air velocity and the longer the contact time of the air with the heat exchange surface, thus improving the exchange efficiency.
For example, in the summer, air having a lower temperature than the outside air in the room is discharged through the heat exchanger HE4. On the other hand, air having a higher temperature than the room temperature of the outside air is inhaled. Here, heat exchange is performed between the air discharged from the room and the air discharged from the room. In this case, the greater the heat transfer area between the two airs, the greater the amount of heat exchange. In addition, the heat exchange amount increases as the flow rates of the intake air and the exhaust air are slower.
As this heat exchanger HE4, a cross flow system or an AC system with little pressure loss can be used.
In addition, a moisture-permeable material can be used for the heat exchanger HE4 for exhaust air and intake air for humidity control. Here, the material and structure are not particularly limited.

<Heat exchange between indoor exhaust air and air conditioner outdoor unit>
The heat exchanger 5 of the air conditioner outdoor unit 4 has the effect of bringing the temperature of the heat exchanger 5 closer to the indoor set temperature as much as possible by using the cold heat of the exhaust air as compared to the outside air temperature.
In the case of summer ventilation with the air conditioner operating, air having a lower temperature than the outside air temperature is supplied from the room to the heat exchanger 5 of the outdoor unit of the air conditioner. Since the heat exchanger 5 of the air conditioner often operates at a temperature higher than the outside air temperature, it is cooled by the exhaust air from the room and the efficiency is improved.
On the other hand, in the case of winter ventilation with the air conditioner operating, air having a higher temperature than the outside air temperature is supplied from the room to the heat exchanger 5 of the outdoor unit of the air conditioner. Since the heat exchanger 5 of the air conditioner is often operated at a temperature lower than the outside air temperature, it is heated by the exhaust air from the room and the efficiency is improved.
In this invention, the efficiency of the air conditioner can be further improved by using the exhaust air from the room so that the heat exchanger temperature of the air conditioner outdoor unit approaches the room temperature. This is because the difference between the temperature of the heat exchanger of the air conditioner and the room temperature (heat exchanger temperature on the indoor unit side of the air conditioner) can be reduced.

<Damper switching>
Here, first, at the outlet of the underground heat exchanger HE1, switching of outside air intake to the roof heat exchanger HE3 or the bath heat exchanger HE2 or heat exchange provided near the indoor air inlet / outlet (intersection) A branch damper that switches to the device HE4 will be described.
The branch damper V2 and the branch damper V5 in FIG. 1 take the outside air taken in from the first outside air inlet 9 and heat-exchanged by the underground heat exchanger HE1 to the roof heat exchanger HE3 or the bath heat exchanger HE2. This is a branching damper that switches between sending to the indoor / outdoor heat exchanger HE4 at the indoor air inlet / outlet (intersection).
These branch dampers (V2, V5) have information such as the outside air temperature from the SE2 sensor, the room temperature from the SE1 sensor, the bath heat exchanger temperature from the SE4 sensor, and the roof heat exchanger temperature from the SE3 sensor. In addition, the operation is performed by a switching signal generated by the control unit 12.

As shown in FIG. 1, switching branch dampers (V3, V4) are provided for sending outside air that has been heat-exchanged by the underground heat exchanger HE1 to the roof heat exchanger HE3 or the bath heat exchanger HE2.
The control unit 12 generates underground heat by using a temperature signal sent from the temperature sensor SE4 of the roof heat exchanger to the control unit 12 and a temperature signal sent from the temperature sensor SE3 provided in the bath heat exchanger HE2 to the control unit 12. The branch dampers V3 and V4 are switched by an electric signal by determining whether it is appropriate to send the outside air via the exchanger HE1 to the flow path of the roof heat exchanger HE3 or the bath heat exchanger HE2.
For example, in winter, when the temperature of the roof heat exchanger HE3 is higher than the temperature of the bath heat exchanger HE2, it is determined that roof heat exchange is more suitable, and the air flow path is connected to the roof heat exchanger HE3. As shown, the branch dampers (V3, V4) are switched.
On the other hand, when the temperature of the bath heat exchanger is higher than the temperature of the roof heat exchanger, it is judged that bath heat exchange is more suitable, so the air flow path is connected to the bath heat exchanger HE2. As shown, the branch dampers (V3, V4) are switched.

<Duct switching for air conditioner use when ventilation is stopped>
The branch damper V1 in FIG. 1 is a branch damper that switches between an air conditioning operation by an air conditioner when the ventilation operation is not performed (cooling operation or heating operation of the air conditioner without ventilation) and an air flow during the ventilation operation. 3 and the outdoor unit 4. However, it may be provided so as to be integrated with the outdoor unit 4.
When ventilation is not necessary or when the air conditioner 7 or the electric heating device 10 is operating, the branch damper V1 is switched in a direction to take in outside air. At this time, the flow path between the indoor exhaust port 3 and the air conditioner outdoor unit 4 is blocked.
When ventilation is required, the branch damper V1 is switched in the indoor ventilation direction, and the indoor air is discharged from the room to the outside by the ventilation fan 6.

As a result of measuring the indoor and outdoor temperatures, the damper V6 does not need to exchange heat with the heat exchanger in the ground or on the roof (or bath) in spring and autumn, where there is not much temperature difference, although it is a little. It is provided to reduce energy loss due to pressure loss in the outside air intake duct.
As a control, at the time of ventilation in the spring / autumn mode, the atmosphere side of the V6 damper is opened so that outside air is taken in from the second outside air inlet. On the other hand, at the time of ventilation in the summer / winter mode, the atmosphere side of the V6 damper is closed so as to be taken in from the first outside air inlet. By this control, in the spring / autumn mode, the distance for transporting the air in the duct can be reduced, and the power of the exhaust fan can be suppressed.

<Indoor temperature sensor SE1, outdoor temperature sensor SE2>
A signal including temperature data is sent to the control unit 12 from the indoor temperature sensor SE1 shown in FIG. 1 and the temperature sensor SE2 provided in the first outside air inlet 9.
Based on these temperature data sent, the control unit 12 compares the magnitude difference between the indoor / outdoor temperature difference and the preset season determination constant, determines the season (seasonal mode), and determines the house. Heat exchange is carried out by controlling the air duct path installed in the building.
The type of the temperature sensor is not limited, but it is preferable to use a sensor having a slight heat capacity so that the temperature does not vary with a slight air flow.

<Control unit 12>
The control unit 12 in FIG. 1 includes a microcomputer having a CPU (Central Processing Unit), a memory, an I / O controller, a timer, and the like.
In the present invention, a provisional ventilation schedule for 365 days (also referred to as a ventilation pattern or ventilation information) is stored in advance in a memory such as a ROM or a RAM. Ventilation information as will be described later is initialized or changed by the user.

  In principle, the control unit 12 performs ventilation processing based on information on a preset ventilation pattern. Further, the timing of ventilation is adjusted while detecting the operation status of the air conditioner and electric heating device 10 and the operation status of the gas oil heating device 13. The ventilation process mainly includes the fan operation of the air conditioner outdoor unit 4, the branch damper V6 of the second outside air intake port 11, the branch damper V1, the underground heat exchanger HE1, the bath heat exchanger HE2, and the branch heat damper HE3. (V2, V3, V4, V5) are controlled.

The information on the ventilation pattern is, for example, stored in advance in a memory in association with an actual outdoor air temperature, an indoor temperature, and a ventilation time. The ventilation pattern information will be used as reference data for predicting the operation of air conditioners and electric heaters from the next year.
In addition, the control unit 12 may be connected to a mobile phone, a personal computer, or the like via a wired LAN, wireless communication, or the like, and may perform an interlocking operation with a home electric product (for example, lighting, kitchen equipment, a washing machine). .
For example, it is also possible to send a lighting on / off signal to the control unit 12 and change the ventilation pattern based on this signal.

<Example of ventilation control>
An embodiment of the ventilation operation of the present invention will be shown.
FIG. 6, FIG. 7, FIG. 8 and FIG. 9 are explanatory diagrams of one embodiment of the ventilation pattern.
Each drawing shows a ventilation pattern (ventilation pattern after reading and correcting the operation status of an air conditioner, electric heating equipment and gas oil heating equipment) and an operation pattern of an air conditioner, electric heating equipment and gas oil heating equipment. The horizontal axis indicates time. Here, a portion with a thick line in the figure indicates that the ventilation operation or the device is operating.

<Pattern 1>
FIG. 6A shows an example of the initial setting ventilation pattern stored in advance in the memory.
FIG. 6 (a) shows an example in which ventilation is performed in the first half of each 2 hour interval (for example, 0hr to 2hr, 2hr to 4hr,...) In the 2 hour interval (for example, 0hr to 2hr, This is an example in which the operation time of the ventilation fan is programmed so that predetermined ventilation (replacement of room air) in 2 hr to 4 hr,. After the control unit 12 confirms the operation of the air conditioner or the electric heating device according to this pattern and confirms that the timing of the energy loss is small even if the ventilation operation is performed, the air conditioner outdoor unit fan (ventilation fan) is turned on. Make it work.
Here, the ventilation fan means an air conditioner outdoor unit fan, and is illustrated as 6 in FIG.
FIG. 6A shows a ventilation pattern in which the ventilation fan is operated for 5 minutes and then stopped for 5 minutes, and this operation and stop are repeated three times. That is, the case where ventilation for a total of 15 minutes is performed for 2 hours is shown. Here, it is tentatively set when predetermined ventilation ends with ventilation for a total of 15 minutes. However, the number of times is not limited. The total ventilation time depends on the size of the house and the capacity of the air conditioner outdoor unit fan.
FIG. 6B shows an ideal operation pattern when an air conditioner, an electric heating device, and the like operate during ventilation stop so as not to overlap with the initial setting ventilation pattern of FIG.
In this case, since ventilation and air conditioning are performed in completely different time zones, it is not necessary to shift the ventilation pattern.

<Pattern 2>
In FIG. 7, the basic ventilation pattern (FIG. 6A) was initially set, but the ventilation pattern (FIG. 7A) and the operation pattern of the device (FIG. 7B) were not overlapped. The modified ventilation pattern (pattern 2) which detects operation | movement and a stop of an air-conditioner, an electric heating apparatus, etc., and operates a ventilation fan is shown.
FIG. 7A shows an example of the operation pattern of the ventilation fan.
FIG. 7B shows an operation (operation, stop) pattern of the air conditioner or the electric heating device.
When the control unit 12 detects signal information indicating that the controller 12 is operating from an air conditioner or an electric heating device, and the air conditioner is in a stopped state as shown in FIG. 7B, the control unit 12 as shown in FIG. At the timing, ventilation operation is performed at regular time intervals.
That is, the ventilation fan is controlled so that the ventilation operation is performed at the timing when the air conditioner or the like is not operating.
And, for example, when the predetermined ventilation (that is, ventilation that replaces the air in the room volume) is finished in each 2-hour interval (for example, 0 hr to 2 hr, 2 hr to 4 hr,. The ventilation operation in 2 hours ends. Thereafter, the ventilation fan is controlled so that the ventilation operation is not performed even when the air conditioner or the electric heating device is not in operation.
Furthermore, one predetermined ventilation operation is completed in each two-hour interval (for example, 0 hr to 2 hr, 2 hr to 4 hr,... In the figure), and the next predetermined ventilation operation is performed in the next two hours. Execute.

<Pattern 3>
FIG. 8 shows a ventilation pattern (pattern 3) that recognizes the overlap of ventilation and device operation when the operation state of the air conditioner / electric heating device overlaps with the ventilation timing of the initial setting ventilation pattern (FIG. 6 (a)). Show. Here, a case is shown in which the control unit 12 changes the ventilation pattern to ventilate the air conditioner or the like.
FIG. 8A shows an example of the operation pattern of the ventilation fan.
FIG. 8B shows an operation pattern of an air conditioner or an electric heating device.
Here, the control unit 12 receives a signal indicating that the air conditioner and the electric heating device are stopped, and corrects the timing of the ventilation operation.
As shown in FIG. 8 (b), since the operation time of the air conditioner and the like is long, the ventilation is insufficient if the air conditioner is ventilated only when the air conditioner is stopped as shown in FIGS. 6 (a) and 7 (a). become. Therefore, in FIG. 8A, the ventilation fan is operated at the same time even during the operation of the air conditioner or the like so as not to cause insufficient ventilation.
Here, the corrected ventilation pattern as shown in FIG. 8A, that is, the timing for operating the ventilation fan is determined by the ventilation control unit 101. For example, in order to finish a predetermined ventilation (ventilation operation that needs to be finished during this two-hour interval) in each two-hour interval (for example, 0 hr to 2 hr, 2 hr to 4 hr,... In the figure). The remaining time is calculated, and if the remaining time is sufficient, the ventilation operation is shifted backward, and if there is not enough remaining time, the ventilation operation is executed regardless of the operation of the air conditioner, electric heating, etc. The timing of ventilation is determined by modifying the ventilation program.

<Pattern 4>
FIG. 9A shows an example of the operation pattern of the ventilation fan.
FIG. 9B shows an example of an operation pattern of an air conditioner or an electric heating device.
FIG. 9C shows an example of the operation pattern of gas or oil heating equipment.
Here, when the gas or oil heating device is operating regardless of whether the air conditioner or the electric heating device is operating or stopped, the ventilation is periodically performed even if the predetermined ventilation in 2 hours is finished. Force the operation to be performed.
In FIG. 9 (a), the predetermined ventilation has been completed, but since the gas or oil heating equipment is operating as shown in FIG. 9 (c), during the operation of the air conditioner or the like in FIG. 9 (b), Forced ventilation is implemented.
The timing and frequency of forced ventilation performed during the operation of the gas oil heating equipment and the like are determined by the combustion speed (oxygen consumption, carbon dioxide discharge speed) of the gas oil heating equipment and the size of the room. For example, the ventilation timing is determined so as to maintain the indoor air composition that does not cause carbon monoxide poisoning even when the gas oil heating device is continuously used for a long time in a completely sealed room.

<Specific examples of ventilation information>
Here, the ventilation pattern information (ventilation information) used for ventilation control will be described.
As the ventilation information, there are initial ventilation pattern information (initial ventilation information) that is initially set in advance, and actual ventilation information that is pattern information as a result of actual ventilation.
The ventilation information mainly includes time information (year, month, day, hour, minute), ventilation operation information (ON (start) and OFF (stop)), and ventilation integration time.
For example, if a 5-minute ventilation is executed three times in a certain 2 hours, the ventilation integration time is 15 minutes, and the total time of ventilation stop is 105 minutes, the following initial ventilation pattern information is set. The

Date / Time Year / Month / Day 00:00:00 Ventilation ON
Year / Month / Day 00:01 Ventilation integration time 1
Year / Month / Day 00:01 Ventilation ON
Year / Month / Day 00:02 Ventilation integration time 2
Year / Month / Day 00:02 Ventilation ON
Year / Month / Day 00:03 Ventilation integration time 3
Year / Month / Day 00:03 Ventilation ON
Year / Month / Day 00:04 Total ventilation time 4
Year / Month / Day 00:04 Ventilation ON
Year / Month / Day 00:05 Ventilation integration time 5
Year / Month / Day 00:05 Ventilation OFF
Year / Month / Day 00:06 Ventilation integration time 5
・
・
・
Year / Month / Day 01:59 Ventilation OFF
Year / month / day 02:00 Ventilation integration time 15

Here, although the ventilation integration time which is the total time which performs ventilation is set to 15 minutes, this is the time which can complete | finish predetermined indoor ventilation in 2 hours, and is not restricted to this. For example, the ventilation integration time is set according to the size of the room to be ventilated and the capacity of the fan.
In the ventilation information, ON / OFF of ventilation is set every minute and the ventilation integration time is set. However, this time interval may be every 2 minutes or every 5 minutes. However, the shorter the time interval, the higher the possibility of more efficient ventilation and air conditioning.

Although it is ideal to perform ventilation based on the information initially set as described above, since the air conditioner and the like are started and stopped at an arbitrary time, the timing of ventilation is shown in FIG. 7 and FIG. May be changed.
For example, when the preset time for turning on ventilation is reached, check the operating status of the air conditioner (ie, whether it is operating or stopped) and that the air conditioner is not operating. When is detected, the ventilation operation is performed according to this ventilation information.
Also, if it is detected that the air conditioner or the like is operating when the preset time for turning the ventilation on is reached, the ventilation that was initially set is not performed, but at another timing. Change ventilation information to perform ventilation.
At this time, for example, as shown in FIG. 7, the operation status of the air conditioner, etc. is investigated at as short a time interval as possible to find out the time zone during which the air conditioner etc. is not operating, and ventilation is performed while the air conditioner is not operating. To do.

Next, one embodiment of actual ventilation information that is a result of actual ventilation is shown.
Date / Time Year / Month / Day 00:00:00 Ventilation OFF
Year / Month / Day 00:01 Total ventilation time 0
Year / Month / Day 00:01 Ventilation OFF
Year / Month / Day 00:02 Ventilation integration time 0
Year / Month / Day 00:02 Ventilation ON
Year / Month / Day 00:03 Ventilation integration time 1
Year / Month / Day 00:03 Ventilation ON
Year / Month / Day 00:04 Total ventilation time 2
Year / Month / Day 00:04 Ventilation ON
Year / Month / Day 00:05 Ventilation integration time 3
Year / Month / Day 00:05 Ventilation ON
Year / Month / Day 00:06 Ventilation integration time 4
・
・
・
・
・
Year / Month / Day 00:58 Ventilation ON
Year / month / day 00:59 Total ventilation time 14
Year / Month / Day 01:59 Ventilation ON
Year / month / day 02:00 Ventilation integration time 15

Here, between 00:00 and 00:02, the ventilation information that was set was "Ventilation ON" and it was planned to ventilate, but actually it was not ventilated. ing. In other words, it indicates that ventilation was OFF (ventilation is stopped) at 00:00:00 and 00: 1. The reason why the scheduled ventilation has not been executed in this way is considered to be caused by, for example, that the air conditioner or the like was operating during this time period.
Instead, ventilation is performed from 00:58 to 00:59 and from 01:59 to 02:00. As a result, the integrated ventilation time of 15 minutes, which is the same as the initial setting, is realized.

This actual ventilation information is a result of a ventilation operation when ventilation is not performed during operation of an air conditioner or the like. This corresponds to the operation shown in FIG.
The ventilation information after one year may be reset based on this ventilation information. For example, in the ventilation operation after one year, the operation time of the air conditioner / heating device in the previous year may be learned to learn to change the ventilation set time so that the operation of the air conditioner / heating device does not overlap.

<Example of ventilation control>
FIG. 10 shows a flowchart of one embodiment of the ventilation control of the present invention.
In the ventilation control of FIG. 10, the ventilation process of step S9 is executed in the following four cases.
[Case 1] When the air conditioner or electric heating equipment is stopped [Case 2] When the scheduled ventilation operation time can be shifted backward (changed) [Case 3] A certain time set when the gas or oil heating equipment is operating When ventilation operation is not performed [Case 4] When a predetermined period has passed since the ventilation was stopped

In step S1 of FIG. 10, initial ventilation information is set and recorded in the memory.
For example, as described above, the user himself / herself inputs and sets ventilation information (initial ventilation information) that executes the initial ventilation pattern as shown in FIG.
FIG. 6A shows a ventilation pattern in which ventilation is performed three times (5 minutes × 3 cycles) in the first half of the hour, with 2 hours as a unit, and predetermined legally stipulated ventilation is performed.
Here, not only the ventilation pattern for one day but also information considering the ventilation pattern for one year (for 365 days) is set.

In step S2, the set initial ventilation information is read from the memory.
In step S3, it is confirmed whether or not the current time is within the ventilation operation time zone set in the initial ventilation information.
For example, in the initial ventilation information, “00:09” is set as the time of the ventilation stop (OFF), and “00:10” is set as the time of the ventilation operation (ON). If the current time is “00:09”, since the current time is not yet in the ventilation operation time zone, the step S3 is looped because it is inconsistent (not included).
On the other hand, when the current time is “00:10”, comparing the current time with the ventilation operation time zone, the current time (00:10) is the time of the ventilation operation (ON). If it matches (includes), the process proceeds to step S4.

In step S4, it is confirmed whether or not the air conditioner or the electric heating device is operating. Here, whether or not the air conditioner or the like is operating is confirmed by, for example, confirming whether or not the outdoor unit compressor of the air conditioner and the air conditioner indoor unit fan are operating. If the air conditioner outdoor unit compressor and the indoor unit fan are operating, it is determined that the air conditioner is operating.
On the other hand, if the outdoor unit compressor of the air conditioner and the air conditioner indoor unit fan are stopped, it is determined that the air conditioner is stopped.
When there are multiple air conditioners, etc., it is judged that one of the outdoor unit compressors and indoor unit fans of multiple air conditioners is operating, but when all the compressors and fans are stopped, Judged to be stopped.
If it is determined that the air conditioner or the like is operating, the process proceeds to step S5.
On the other hand, when the air conditioner, the electric heating device, or the like is stopped, the process proceeds to step S9 and the ventilation process is executed (case 1). A specific example of the ventilation process will be described later.

In step S5, it is confirmed whether or not the ventilation operation time can be shifted (changed). Here, the shift was originally set as the ventilation operation time in the ventilation information, but because the air conditioner etc. is currently operating, it was suspended without performing the ventilation operation at present and was suspended at another time zone It means changing ventilation information to perform ventilation processing.
In addition, when there is a time in which ventilation can be performed in another time zone, it is also confirmed whether or not the execution of the ventilation satisfies a prescribed legal ventilation operation.
Whether or not there is a time zone in which ventilation can be performed is determined by, for example, 2 hours because the actual operation integration time of the ventilation fan (outdoor unit fan) necessary to complete a predetermined ventilation operation in 2 hours is determined. The remaining ventilation operation required time is calculated from the ventilation fan actual operation integration time in the interval (for example, 0 hr to 2 hr, 2 hr to 4 hr, ... in the figure), and the remaining time in the 2-hour interval ( Judgment is made by comparing the time until the interval ends.
When another time zone in which such ventilation can be performed exists and when the legal ventilation operation can be satisfied, the process proceeds to step S6. At this time, the time during which ventilation can be performed is temporarily stored.

  On the other hand, when the ventilation operation time cannot be shifted in step S5, that is, when there is no time in which ventilation can be executed in the time zone after the current time in the ventilation information, or the shift is performed. If the legal ventilation operation cannot be satisfied even after that, the process proceeds to step S9 and the ventilation process is executed (case 2).

In step S6, it is confirmed whether at least one of the gas heating device and the oil heating device is operating.
Here, whether or not these devices are in operation is determined, for example, by receiving operation signals of the gas heating device and the oil heating device as device monitoring information 113 via the device monitoring unit 104 by wired or wireless communication. When the operation signals of the oil heating device and the gas heating device in the device monitoring information are received, it is determined that the gas or the oil heating device is operating. On the other hand, when the operation signals of the oil heating device and the gas heating device in the device monitoring information cannot be received, it is determined that the operation is stopped.
In addition, when there are multiple gas heating devices, etc., if any one of them is operating, it is judged that it is operating, and is stopped only when all oil heating devices or gas heating devices are not operating Judge.
If it is determined in step S6 that the gas heating device or the like is in operation, the process proceeds to step S7, and the ventilation non-operation time is confirmed. If the ventilation operation has not been performed for a certain period of time, the process proceeds to step S9. The ventilation process is executed (Case 3).
On the other hand, when the gas heating device or the like is stopped, the process proceeds to step S8.

In step S7, it is confirmed whether the ventilation non-operation period has elapsed. That is, after the previous ventilation process is stopped, it is confirmed whether or not a predetermined period has passed with no ventilation.
Here, the predetermined period cannot be uniquely defined as how many minutes, but prevents carbon monoxide poisoning due to changes in indoor space, gas, or indoor air composition accompanying the combustion operation of oil heating equipment. It is time set for the purpose. For this predetermined period, for example, the user may set a time such as “30 minutes” when setting in step S1.
Whether or not this period has elapsed is, for example, searching for the end time of the last ventilation process actually performed from the actual ventilation information, and the current time is the time after a predetermined period has elapsed from that time Or not.
When the predetermined period as described above has already elapsed, the process proceeds to step S9, and ventilation processing is executed (case 4).
On the other hand, if such a predetermined period has not yet elapsed, the process proceeds to step S8.

In step S8, a ventilation pattern changing process is performed. In other words, the ventilation information read out in step S2 and used as the current ventilation schedule is rewritten to include the temporarily stored time in the time zone determined to be shiftable in step S5.
For example, in step S5, when it is determined that the executable time after the shift is a time 20 minutes after the current time, the ventilation operation time is set to a time 20 minutes after the current time. , Change ventilation information.
The ventilation information after this change is stored in a memory for use at a later date or the next year.
After step S8, the process returns to step S3 to execute the next ventilation control.

  In the case of the four cases as described above, the ventilation process in step S9 is executed in steps S4, S5, S6 and S7 based on the respective determinations. Although the specific content of the ventilation process will be described later, ventilation is mainly performed by controlling opening and closing of a plurality of branch dampers (hereinafter also simply referred to as dampers) V1 to V6 shown in FIG. 1 based on predetermined conditions. Execute the process.

After performing the ventilation process of step S9, in step S10, real ventilation information is produced | generated and memorize | stored in memory.
The actual ventilation information is information of ventilation actually executed as described above, and new information is added to the actual ventilation information of the day each time ventilation processing is performed.

<Specific examples of ventilation treatment>
Here, a specific example of the ventilation process in step S9 shown in FIG. 10 will be described.
FIG. 11 shows a flowchart of an embodiment of the ventilation process of the present invention.
It is considered that indoor ventilation generally needs to be processed differently depending on the season, and it is mainly classified into three types of ventilation: “spring, autumn”, “summer”, and “winter”. Moreover, in this invention, the ventilation performed in summer is divided into two modes, which are divided into ventilation using geothermal exchange (mode B) and ventilation using geothermal exchange and bath heat exchange (mode C). Perform ventilation in one mode.
Furthermore, ventilation in winter is divided into three modes, and one of the three heat exchanges: geothermal exchange (mode D), geothermal and bath heat exchange (mode E), and geothermal and roof heat exchange (mode F). Ventilation to be used shall be performed.
Further, in spring and autumn, the difference between the room temperature and the outside air temperature is relatively small, and it is considered that the same ventilation should be performed. Therefore, the same ventilation (mode A) is performed. However, it is not limited to such a ventilation mode, and other ventilation modes may be set as necessary.

In the present invention, a season determination constant (A, B) is defined, and the season is determined by comparing the constant with the room temperature and the outside air temperature.
In general, it is determined that “summer” is when the outside air temperature is considerably higher than the room temperature, and “winter” is when the outside temperature is considerably lower than the room temperature.
The constants (A, B) are preset in advance or set by the user, and are constants corresponding to the temperature, where A> B.

Here, the outdoor temperature is Tout, the indoor temperature is Tin, and the season is judged based on the following criteria based on the magnitude relationship between the temperature difference T ₀ (= Tout−Tin) and the constants (A, B). To do.
(1) If B <T ₀ <A, “Spring / Autumn Mode”
(2) When T ₀ = Tout−Tin ≧ A, “summer mode”
(3) When T ₀ = Tout−Tin ≦ B, “winter mode”

In step S101 in FIG. 11, first, a season determination constant (A, B) is set and stored in the memory. For example, A = 5 and B = −5 are set.
Here, the constants A and B are values compared with a temperature difference (T ₀ ) obtained from the outside air temperature (Tout) −the room temperature (Tin). For example, when A = 5, if the temperature difference (T ₀ ) is T ₀ ≧ A, it means that the outside air temperature (Tout) is higher than the indoor temperature (Tin) by 5 degrees or more. The summer mode is determined based on the criterion.

In step S102, temperature data sent from each temperature sensor (SE1, SE2, SE3, SE4, SE8) shown in FIG. 1 is acquired.
That is, the outside temperature Tout obtained from the temperature sensor SE2, the indoor temperature Tin obtained from the temperature sensor SE1, the bath temperature Tfu obtained from the temperature sensor SE3, the roof temperature Tya obtained from the temperature sensor SE4, and the geothermal temperature obtained from the temperature sensor SE8. Get Tci.

In step S103, the temperature difference T ₀ is calculated from Tout−Tin.
In step S104, the temperature difference T ₀ is compared with the season determination constant (A, B).
In step S105, if B <T ₀ <A, it is determined that the spring / autumn mode is selected, and the process proceeds to step S106, where ventilation processing in the spring / autumn mode (mode A) is executed.
In step S107, if T ₀ ≧ A, the summer mode is determined, and the process proceeds to step S108. In the summer mode, one of the two ventilation processes (mode B or mode C) is performed depending on the magnitude relationship between the bath temperature Tfu and the geothermal temperature Tci.

In step S108, when bath temperature Tfu> geothermal temperature Tci, the process proceeds to step S109, and ventilation processing using geothermal exchange is performed (summer mode B).
Here, if the bath temperature (Tfu) is higher than the geothermal temperature (Tci), the underground heat exchanger has a lower temperature, and the bath heat exchanger has a higher temperature. Heat will be exchanged using only geothermal heat. That is, it is because it is preferable to perform geothermal exchange rather than bath heat exchange in terms of a low outdoor air intake air temperature.

On the other hand, if Tfu> Tci is not satisfied in step S108, the process proceeds to step S110 to execute a ventilation process using bath heat exchange (summer mode C).
This is because performing the heat exchange of the bath at a relatively low bath temperature has an advantage of lowering the intake air temperature than performing only the geothermal exchange.
If B <T ₀ <A is not satisfied in step S105 of FIG. 11 and T ₀ ≧ A is not satisfied in step S107, T ₀ ≦ B at this time, so it is determined that the winter mode is selected, and the process proceeds to step S111.
In step S111, the bath temperature (Tfu), the roof temperature (Tya), and the underground temperature (Tci) are compared in order to determine which of the three winter modes (D, E, F) is adopted. To do.

If the underground temperature Tci is higher than the other temperatures (Tfu, Tya) in step S112, the process proceeds to step S113, and ventilation processing using geothermal exchange is executed (winter mode D).
If the bath temperature Tfu is higher than the other temperatures (Tci, Tya) in step S114, the process proceeds to step S115, and ventilation processing using geothermal exchange and bath heat exchange is executed (winter mode E).
If the bath temperature Tfu is lower than the other temperatures (Tci, Tya) in step S114, the process proceeds to step S117, and ventilation processing using geothermal exchange and roof heat exchange is performed (winter mode F).

  Each of the six ventilation processes in FIG. 11 is performed by opening and closing the six dampers (V1 to V6) shown in FIG. 1 corresponding to each mode. Specific processing contents thereof are shown in FIGS.

<Ventilation treatment in spring / autumn mode A>
FIG. 12 shows a flowchart of an embodiment of the ventilation process in spring / autumn mode A (step S106).
In spring and autumn, since it is generally considered that the difference between the outside air temperature and the room temperature is small, the air discharged from the room through the room exhaust port 3 and the second outside air intake port 11 having the branch damper V6 are provided. Ventilate only with air sucked in from.
First, in step S201, the branch damper V6 is opened to take in the atmosphere.
In step S202, the branch damper V1 is closed. At this time, the other branch dampers (V2, V3, V4, V5) are not controlled, and the branch path connection direction of each branch damper may be any.
In step S203, a ventilation operation is performed by the outdoor unit fan 6 of the air conditioner functioning as a ventilation fan.
The ventilation operation by the outdoor unit fan 6 is not to exchange heat between the heat exchanger of the outdoor unit of the air conditioner and the air, but to perform an operation of exhausting the indoor air by the outdoor unit fan, for example.

By this ventilation operation, outside air is taken in from the second outside air intake port 11 through the outside air intake port 2.
On the other hand, the indoor air is discharged from the indoor exhaust port 3, exchanged heat with the outside air by the heat exchanger HE 4, and then discharged from the external exhaust port provided in the air conditioner outdoor unit by the outdoor unit fan 6.
At this time, in the heat exchanger HE4, for example, heat exchange is performed so that the temperature is close to an intermediate temperature between the indoor exhaust air temperature and the outside air intake air temperature, and new air is generated while keeping the indoor temperature substantially constant. be introduced. Since the heat exchanger HE4 has a high heat transfer rate and a wide heat transfer area and has a structure such as a cross flow channel, no power is required for the heat exchange process.
Moreover, since the electric power required for ventilation is only the electric power for operating the outdoor unit fan 6 and the damper movable electric power for intermittent operation, the air conditioning fan and the ventilation fan are provided separately as in the prior art. Rather than power consumption (energy saving).

<Ventilation treatment in summer mode B>
FIG. 13 shows a flowchart of an embodiment of the ventilation process in summer mode B (step S109).
In this summer mode B, ventilation is performed using geothermal heat exchange. Here, outside air is taken in from the first outside air inlet 9, heat exchange is performed via the underground heat exchanger HE1 and the heat exchanger HE4, thereby ventilating the indoor air. Here too, ventilation is performed using only the outdoor unit fan 6 as a power source.

In step S211, the branch damper V6 is closed. That is, the second outside air suction port 11 with the branch damper V6 is closed and does not take in air from here.
In step S212, the branch damper V1 is closed.
In step S213, the connection direction of the branch dampers V2 and V5 is switched so that the outside air heat-exchanged by the underground heat exchanger HE1 can be directly supplied into the room.

That is, the connection between the branch damper V2 and the branch damper V5 is controlled so that the path on the underground heat exchanger side is connected. Thereby, the supply path to bath heat exchanger HE2 and roof heat exchanger HE3 is cut off.
Further, the branch dampers V3 and V4 need not be controlled. That is, the connection direction of the branch dampers (V3, V4) may be either.

In step S214, a ventilation operation by the outdoor unit fan 6 is performed. This ventilation operation may be the same as step S203 in the spring / autumn mode A described above.
In the summer mode B, outside air is taken in from the first outside air suction port 9 and is firstly heat-exchanged with underground heat by the underground heat exchanger HE1. Here, the outside air having a relatively high temperature is cooled.
Here, the outside air whose temperature has been lowered is led to the heat exchanger HE4 via the branch damper V2, the piping of the lower route in FIG.
In the heat exchanger HE4, heat exchange between the outside air and the room air exhausted from the room exhaust port 3 is performed. The indoor air after the heat exchange is discharged from the outdoor unit external exhaust port to the outside of the house by the outdoor unit fan 6.

This summer mode B is employed when the geothermal temperature Tci is lower than the bath temperature Tfu, and only geothermal exchange is performed, and bath heat exchange is not performed. This is because, in FIG. 1, hot bath heat exchange is performed after geothermal exchange, which is irrational for summer air conditioning.
The underground heat exchanger is also made of a metal material with high thermal conductivity and excellent corrosion resistance, and is formed with a flow path with low pressure loss. And not.
Since this summer mode B also requires only the power of the outdoor unit fan 6, power saving can be achieved.

<Ventilation treatment in summer mode C>
FIG. 14 shows a flowchart of an embodiment of the ventilation process in the summer mode C (step S110). In this summer mode C, ventilation is performed using underground heat exchange and bath heat exchange.
Here, outside air is taken in from the first outside air inlet 9, and heat is exchanged through the underground heat exchanger HE1, the bath heat exchanger HE2, and the heat exchanger HE4 to ventilate the room air. Again, only the outdoor unit fan 6 is used as a power source.

In step S221, the branch damper V6 is closed.
In step S222, the branch damper V1 is closed.
In step S223, the connection of the four branch dampers (V2, V3, V4, V5) is switched to the bath heat exchanger side.
That is, the outside air that has undergone underground heat exchange is taken in a path that passes through the branch damper V2, the branch damper V3, the bath heat exchanger HE2, the branch damper V4, and the branch damper V5 in this order. At this time, the path to the roof heat exchanger HE3 is disconnected.

In step S224, the ventilation operation by the outdoor unit fan 6 is performed. This ventilation operation may be the same as the spring / autumn mode A or the summer mode B. (Except switching of damper V6)
This summer mode C is employed when the bath temperature Tfu is lower than the geothermal temperature Tci (Tfu ≦ Tci).
Accordingly, the outdoor air having a relatively high temperature is cooled by the underground heat, further cooled by the bath water having a temperature lower than the geothermal temperature, led to the heat exchanger HE4, and from the outside air intake 2 to the room. Supplied.
In addition, the indoor air is heat-exchanged with the air cooled by the heat exchanger HE4 and then discharged from the air conditioner outdoor unit external exhaust port to the outside of the house by the outdoor unit fan 6.
In this summer mode C, heat is exchanged through the three heat exchangers (HE1, HE2, HE4), so it is possible to introduce outside air at a lower temperature than in the summer mode B, and to improve summer air conditioning efficiency. Energy saving can be achieved.

<Ventilation treatment in winter mode D>
FIG. 15 shows a flowchart of an embodiment of the ventilation process in the winter mode D (step S113).
In this winter mode D, ventilation using geothermal exchange is performed.
Here, as in the summer mode B, outside air is taken in from the first outside air inlet 9, and heat is exchanged through the underground heat exchanger HE1 and the heat exchanger HE4 to ventilate the room air.

Steps S231, S232, S233, and S234 are the same processes as steps S211, S212, S213, and S214 of FIG.
However, this winter mode D is executed when the geothermal temperature Tci is higher than both the bath temperature Tfu and the roof temperature Tya.
In winter, it is considered that the outside air is considerably lower than the geothermal temperature. Therefore, the outside air is warmed by the highest temperature geothermal exchange and then led to the room. As a result, the outside air taken into the room is heated slightly by the underground heat exchanger, so that it is supplied to the room and then used for heating by the air conditioner, electric heating equipment, oil heating equipment, etc. Can be saved and energy can be saved.

<Ventilation treatment in winter mode E>
FIG. 16 shows a flowchart of the ventilation process in the winter mode E (step S115).
In this winter mode E, similarly to the summer mode C, ventilation using geothermal heat exchange and bath heat exchange is performed.
Here, outside air having a relatively low temperature is taken in from the first outside air inlet 9, and heat is exchanged through the geothermal exchanger HE1, the bath heat exchanger HE2, and the heat exchanger HE4, and the indoor air is discharged. Ventilate.
This winter mode E is executed when the bath temperature Tfu is higher than both the roof temperature Tya and the geothermal temperature Tci.
Steps S241, S242, S243, and S244 in FIG. 16 are the same processes as steps S221, S222, S223, and S224 in FIG. 14, respectively.

By this process, the relatively low temperature outside air is warmed by geothermal heat, further warmed by hot bath heat, then guided to the heat exchanger HE4 and supplied indoors.
Therefore, the temperature difference between the exhausted room air and the outside air supplied from the outside air inlet 2 is reduced, so that more efficient air conditioning can be performed and energy saving can be achieved.

<Ventilation treatment in winter mode F>
In FIG. 17, the flowchart of the ventilation process of winter mode F (step S117) is shown.
In this winter mode F, ventilation using geothermal heat exchange and roof heat exchange is performed.
Here, outside air having a relatively low temperature is taken in from the first outside air inlet 9, and heat is exchanged through the geothermal exchanger HE1, the roof heat exchanger HE3, and the heat exchanger HE4, and the indoor air is discharged. Ventilate.
This winter mode F is executed when the roof temperature Tya is higher than both the geothermal temperature Tci and the bath temperature Tfu.

In step S251 in FIG. 17, the branch damper V6 is closed.
In step S252, the branch damper V1 is closed.
In step S253, the connection of the four branch dampers (V2, V3, V4, V5) is switched to the roof heat exchanger HE3 side.
That is, the outside air that has been subjected to geothermal exchange is introduced through a path that passes through the branch damper V2, the branch damper V3, the roof heat exchanger HE3, the branch damper V4, and the branch damper V5 in this order. At this time, the path to the bath heat exchanger HE2 is disconnected.
In step S254, ventilation operation by the outdoor unit fan 6 is performed. This ventilation operation may be the same operation as the spring / autumn mode A or summer mode B.

The ventilation in the winter mode F is the same as the winter mode E except that roof heat exchange is used instead of bath heat exchange as heat exchange.
Even in this winter mode F, the outside air is warmed by high-temperature geothermal heat and further heated by high-temperature roof heat, and then led to the room, so it is introduced from the temperature of the indoor air to be exhausted and the outside air intake 2. The difference between the temperature and the outside air temperature can be reduced, air conditioning can be performed efficiently, and energy can be saved.

<Example of ventilation processing in each mode>
Below, the Example at the time of actually performing a ventilation process according to six above-mentioned modes (A-F) is shown.

<Example 1>
Here, a case will be described in which the apparatus such as an air conditioner is not operating in the spring / autumn mode A (FIGS. 6 and 12).

First, the information (initial ventilation information) of the initial ventilation pattern shown in FIG. 6 is input (step S1).
For example, the following data is input.
From 0:00 on April 1 to 0:00 on April 1 4 minutes: Ventilation for 5 minutes,
From 0:05 on April 1 to 0:09 on April 1: Ventilation stopped,
0:10 on April 1 to 0:14 on April 1: Ventilation for 5 minutes,
From 0:15 on April 1 to 0:19 on April 1: Ventilation stopped,
From 0:20 on April 1 to 0:25 on April 1: Ventilation for 5 minutes,
From 0:25 on April 1 to 0:29 on April 1: Ventilation stopped,
From 1:30 on April 1 to 1:59 on April 1: Ventilation stopped.

Thereafter, similar ventilation and stop operations are input every two hour cycle and stored in the memory.
In order to perform ventilation according to this ventilation pattern, the stored initial ventilation information is read from the memory (step S2).

When the time is 0:00 on April 1, it is confirmed whether the air conditioner or the electric heating device is operating (steps S3 and S4).
When the air conditioner or the electric heating device is not operating, a ventilation operation is performed (steps S4 and S9).

Here, the case where the outside air temperature Tout is 5 ° C. or more higher than the room temperature Tin is set as summer, and the case where the outside air temperature is 5 ° C. or less lower than the room temperature is set as winter.
That is, A = 5 and B = −5 are set as season determination constants (step S101).

Temperature data is acquired from each temperature sensor (step S102).
The outside air temperature is read from the temperature sensor SE2. Here, for example, the detected outside air temperature (Tout) is set to 20 degrees.
The room temperature is read from the temperature sensor SE1. Here, for example, the detected indoor temperature (Tin) is set to 16 degrees.
The temperature of the bath heat exchanger (bath temperature) is read from the temperature sensor SE3.
The temperature of the roof heat exchanger (roof temperature) is read from the temperature sensor SE4.
The temperature of the underground heat exchanger (geothermal temperature) is read from the temperature sensor SE8.
However, in this embodiment, the temperatures of these three heat exchangers are not used.

A temperature difference T ₀ (Tout−Tin) is calculated (step S103) and compared with the season determination constant (A, B) (step S104). Here, T ₀ = Tout−Tin = 20−16 = 4.
Since the difference (T ₀ ) between the outside air temperature and the room temperature is less than 5 ° C., the spring / autumn mode is determined (steps S105 and S106).

The damper V6 is opened to the atmosphere side, and outside air is taken in (step S201).
At the same time, the damper V1 is closed, and the suction of the air conditioner outdoor unit 4 and the indoor exhaust port 3 from the house are connected (step S202).
A ventilation operation is performed for one minute (step S203).

The time, the ventilation operation (whether or not the ventilation operation is performed) and the ventilation integration time (the ventilation integration time in this ventilation cycle) are written in the memory (step S10).
It is checked again whether the air conditioner or the electric heating device is operating (step S4).
The above process is repeated. The ventilation pattern at this time operates as shown in FIG.

<Example 2>
Here, an example in which a device such as an air conditioner is operating in the spring / autumn mode A (FIGS. 7 and 12) will be described.
Here, it is assumed that the air conditioner and the electric heating device are operated irregularly, and the gas oil heater is not operated.
First, the initial ventilation pattern (initial ventilation information) shown in FIG. 6 is input (step S1).
For example, the following data is input.
From 0:00 on April 1 to 0:00 on April 1 4 minutes: Ventilation for 5 minutes,
From 0:05 on April 1 to 0:09 on April 1: Ventilation stopped,
0:10 on April 1 to 0:14 on April 1: Ventilation for 5 minutes,
From 0:15 on April 1 to 0:19 on April 1: Ventilation stopped,
From 0:20 on April 1 to 0:25 on April 1: Ventilation for 5 minutes,
From 0:25 on April 1 to 0:29 on April 1: Ventilation stopped,
From 1:30 on April 1 to 1:59 on April 1: Ventilation stopped.

Thereafter, similar ventilation and stop operations are input every two hour cycle and stored in the memory.
The stored initial ventilation information is read from the memory (step S2).

When the time is 0:00 on April 1, it is confirmed whether the air conditioner or the electric heating device is operating (steps S3 and S4).
When the air conditioner or the electric heating device is not operating, a ventilation operation is performed (steps S4 and S9).

As in the first embodiment, the case where the outside air temperature Tout is 5 ° C. or more higher than the room temperature Tin is set as summer, and the case where the outside air temperature is 5 ° C. or less lower than the room temperature is set as winter.
That is, A = 5 B = −5 is set as the season determination constant (step S101).

Temperature data is acquired from each temperature sensor (step S102).
The outside air temperature is read from the sensor SE2 (Tout = 20).
The room temperature is read from the sensor SE1 (Tin = 16).
Read bath temperature from sensor SE3.
Read the roof temperature from sensor SE4.
Read geothermal temperature from sensor SE8.

A temperature difference T ₀ (Tout−Tin) is calculated (step S103) and compared with the season determination constant (A, B) (step S104). Here, T ₀ = Tout−Tin = 20−16 = 4.
Since the difference (T ₀ ) between the outside air temperature and the room temperature is less than 5 ° C., the spring / autumn mode is determined (steps S105 and S106).

The damper V6 is opened to the atmosphere side, and outside air is taken in (step S201).
At the same time, the damper V1 is closed, and the suction of the air conditioner outdoor unit 4 and the indoor exhaust port 3 from the house are connected (step S202).
A ventilation operation is performed for one minute (step S203).
The time, ventilation operation, and ventilation integration time are written into the memory (step S10).
It is checked again whether the air conditioner or the heating device is operating (step S4).

Here, it is assumed that an air conditioner or the like is detected to operate.
At this time, the ventilation operation is stopped. Further, even if the ventilation operation is shifted from the remaining time, it is checked whether or not the predetermined ventilation operation is completed (step S5).
If the ventilation operation may be shifted, it is checked whether the oil or gas heating device is operating (step S6).
If the oil or gas heating device is not operating, it is further checked whether the air has been ventilated for a predetermined time or more since the previous ventilation (step S7). Here, for example, when the ventilation operation has not been performed for 30 minutes or more, the process proceeds to step S9, and forced ventilation is performed.

On the other hand, when the oil heating device is inoperative and the predetermined inoperative period (30 minutes) has not elapsed, a new scheduled ventilation time and integrated ventilation time are stored in the memory (step S8).
When the next scheduled ventilation time is reached, the operating conditions of the air conditioner and the electric heating device are similarly confirmed, and the following processing is repeated (steps S3 and S4).

  The ventilation pattern in the case of Example 2 is, for example, FIG. 7A, and the operation pattern of the air conditioner and the heating device is as shown in FIG. 7B. The timing of the ventilation process is shifted backward in accordance with the operating conditions of the air conditioner and electric heating equipment.

<Example 3>
Here, an example in which a device such as an air conditioner is operating in the spring / autumn mode A (FIGS. 9 and 12) will be described. Unlike Example 2, it is assumed that, in addition to an air conditioner and an electric heating device, a gas or petroleum heating device that requires special ventilation operates irregularly.

First, the initial ventilation pattern (initial ventilation information) shown in FIG. 6 is input (step S1).
For example, the following data is input.
From 0:00 on April 1 to 0:00 on April 1 4 minutes: Ventilation for 5 minutes,
From 0:05 on April 1 to 0:09 on April 1: Ventilation stopped,
From 0:10 on April 1 to 0:14 on April 1: Ventilation for 5 minutes,
From 0:15 on April 1 to 0:19 on April 1: Ventilation stopped,
From 0:20 on April 1 to 0:25 on April 1: Ventilation for 5 minutes,
From 0:25 on April 1 to 0:29 on April 1: Ventilation stopped,
From 1:30 on April 1 to 1:59 on April 1: Ventilation stopped.

Thereafter, similar ventilation and stop operations are input every two hour cycle and stored in the memory.
The stored initial ventilation information is read from the memory (step S2).
When the time is 0:00 on April 1, it is confirmed whether the air conditioner or the electric heating device is operating (steps S3 and S4).
When the air conditioner or the electric heating device is not operating, a ventilation operation is performed (steps S4 and S9).
Since the case where the outside air temperature Tout is higher than the room temperature Tin by 5 ° C. or more is set as summer, and the case where the outside air temperature is 5 ° C. or less lower than the room temperature is set as winter, as in the first embodiment, A = 5 , B = −5 is set (step S101).

Temperature data is acquired from each temperature sensor (step S102).
Reads the outside air temperature from sensor SE2. The detected outside air temperature Tout is set to 20 degrees.
Read room temperature from sensor SE1. The detected room temperature Tin is set to 16 degrees.
Read bath temperature from sensor SE3. The detected bath temperature Tfu is set to 24 degrees.
Read the roof temperature from sensor SE4. The detected roof temperature Tya is set to 50 degrees.
Read geothermal temperature from sensor SE8. The detected geothermal temperature Tci is set to 22 degrees.

The temperature difference T ₀ is calculated (step S103) and compared with the season determination constant (A, B) (step S104). Here, T ₀ = Tout−Tin = 20−16 = 4.
Since the difference (T ₀ = 4) between the outside air temperature (20 ° C.) and the room temperature (16 ° C.) is less than 5 ° C., the spring / autumn mode is determined (steps S105 and S106).

The damper V6 is opened to the atmosphere side, and outside air is taken in (step S201).
At the same time, the damper V1 is closed, and the suction of the air conditioner outdoor unit 4 and the indoor exhaust port 3 from the house are connected (step S202).
A ventilation operation is performed for one minute (step S203).
The time, ventilation operation, and ventilation integration time are written into the memory (step S10).
Returning to step S3, the above operation is repeated, and the ventilation set by the ventilation pattern is executed.

Next, it is examined whether the oil or gas heating device is operating (step S6). When the oil heating equipment or the like is not operating, it is checked whether or not ventilation has been performed for a predetermined time or more from the previous ventilation (elapse of ventilation inoperative period) (step S7).
If the oil or gas heating equipment is operating and the non-operating period of ventilation has exceeded a predetermined time (for example, 30 minutes is temporarily set to avoid carbon monoxide poisoning), ventilation processing is executed (step S9).

  FIG. 9A shows the ventilation pattern of Example 3, FIG. 9B shows the operation pattern of an air conditioner, etc., and FIG. 9C shows oil or gas heating. It is an operation pattern of the device.

<Example 4>
Here, an example in which the air conditioner or the like is operating in the summer mode B (FIG. 13) will be described.
First, the initial ventilation pattern (initial ventilation information) shown in FIG. 6 is input (step S1).
For example, the following data is input.
From 0:00 on August 1 to 0:04 on August 1 for 5 minutes,
From 0:05 on August 1 to 0:09 on August 1
From 0:10 on August 1 to 0:14 on August 1 for 5 minutes,
From 0:15 on August 1 to 0:19 on August 1, ventilation stopped,
From 0:20 on August 1 to 0:25 on August 1 for 5 minutes,
From 0:25 on August 1 to 0:29 on August 1
From 0:30 on August 1 to 1:59 on August 1 Ventilation stopped.

Thereafter, similar ventilation and stop operations are input every two hour cycle and stored in the memory.
The stored initial ventilation information is read from the memory (step S2).
When the time is 0:00 on August 1, it is confirmed whether the air conditioner and the electric heating device are operating (steps S3 and S4).
Here, when the air conditioner or the electric heating device is operating, it is checked whether the predetermined ventilation operation can be completed even if the ventilation operation is shifted (step S5).

If it is acceptable to shift, it is checked whether the gas or oil heating equipment is operating (step S6). If not, it is further checked whether the ventilation operation has not been performed for a predetermined period or more (elapse of the non-operation period) (step S7).
When the gas heating device is inoperative and the inoperative period has not elapsed, a new scheduled ventilation time after shifting the ventilation and the accumulated ventilation time are stored in the memory (step S8).

  Returning to step S3, the above process is repeated again. In the case where the air conditioner or the like is not operating (step S4), and when the predetermined ventilation operation is not finished when the ventilation operation is shifted (step S5), the ventilation operation is executed (step S9).

In step S9, temperature data is acquired from each temperature sensor (step S102).
The outside air temperature is read from the sensor SE2. The outside air temperature Tout is set to 35 degrees.
Read room temperature from sensor SE1. The room temperature Tin is set to 25 degrees.
Read bath temperature from sensor SE3. The bath temperature Tfu is 24 degrees.
Read the roof temperature from sensor SE4. The roof temperature Tya is 50 degrees.
Read geothermal temperature from sensor SE8. The geothermal temperature Tci is 22 degrees.

The temperature difference T ₀ is calculated (step S103) and compared with the season determination constant (A, B) (step S104). Here, T ₀ = Tout−Tin = 35−25 = 10.
Since the difference (T ₀ = 10) between the outside air temperature Tout and the room temperature Tin is 5 ° C. or more, it is determined that the summer mode is set (steps S105 and S107).

  The geothermal temperature (Tci = 22) is compared with the bath temperature (Tfu = 24) (step S108). Since the bath temperature (Tfu) is higher, the ventilation process in summer mode B is executed (step S109).

The damper V6 is closed and switched to a route for taking in air from the first air suction port 9 (step S211).
At the same time, the damper V1 is closed, and the suction of the air conditioner outdoor unit 4 and the indoor exhaust port 3 from the house are connected (step S212).
Since the geothermal temperature (Tci = 22) is lower than the bath temperature (Tfu = 24), the damper V2 and the damper V5 are switched to the path connecting the underground heat exchanger (step S213).
Next, a ventilation operation is performed for 1 minute (step S214).
The time, ventilation operation, and ventilation integration time are written in the memory (step S10).
The above operation is repeated to perform ventilation with the set ventilation pattern.
After the predetermined ventilation operation for 2 hours is finished, the ventilation operation for the next 2 hours is started.

FIG. 18A shows a graph of one example of the temperature profile of the outside air taken in and the temperature profile of the exhaust air in Example 4. FIG.
The outside air (35 degrees) having a high summer temperature is subjected to heat exchange by the underground heat exchanger HE1 and the temperature is lowered. Thereafter, heat is exchanged with indoor air discharged from the room by the heat exchanger HE4, and the temperature is further lowered and supplied to the room. The air taken in the room and the room air are mixed and cooled by the air conditioner, and the room temperature is adjusted to 25 ° C.
On the other hand, the temperature of the air (25 degrees) exhausted from the room is raised by exchanging heat with the introduced outside air in the heat exchanger HE4, and then in the heat exchanger 5 of the outdoor unit 4 of the air conditioner. The heat is exchanged, and the temperature further rises and is released into the atmosphere, and is mixed with a large amount of outside air to reach the atmospheric temperature.
On the other hand, FIG. 18B is an example in the case of conventional ventilation, and the outside air (atmosphere) is taken into the room at a temperature of 35 ° C. and is cooled to 25 ° C. by the air conditioner while being mixed with the room air. . On the other hand, the exhausted air is discharged outside the room temperature.
The ventilation system of the present invention has a smaller difference between the air temperature before being supplied to the room and cooled by the air conditioner and the room air temperature compared to the conventional ventilation system, and energy used for the air conditioner is reduced. As a result, the total energy used for ventilation and indoor air conditioning is reduced.

<Example 5>
Here, an example in which the air conditioner or the like is not operating in the summer mode C (FIG. 14) will be described.
First, the initial ventilation pattern (initial ventilation information) shown in FIG. 6 is input (step S1).
For example, the following data is input.
From 0:00 on August 1 to 0:04 on August 1 for 5 minutes,
From 0:05 on August 1 to 0:09 on August 1
From 0:10 on August 1 to 0:14 on August 1 for 5 minutes,
From 0:15 on August 1 to 0:19 on August 1, ventilation stopped,
From 0:20 on August 1 to 0:25 on August 1 for 5 minutes,
From 0:25 on August 1 to 0:29 on August 1
From 0:30 on August 1 to 1:59 on August 1 Ventilation stopped.

Thereafter, similar ventilation and stop operations are input every two hour cycle and stored in the memory.
The stored initial ventilation information is read from the memory (step S2).
When the time is 0:00 on August 1, it is confirmed whether the air conditioner and the electric heating device are operating (steps S3 and S4).
When the air conditioner or the electric heating device is operating, it is checked whether the predetermined ventilation operation can be completed even if the ventilation operation is shifted (step S5).
If the air conditioner or the electric heating device is not operating, a ventilation operation is executed (step S9).

In step S9, temperature data is acquired from each temperature sensor (step S102).
The outside air temperature is read from the sensor SE2. The outside air temperature Tout is set to 35 degrees.
Read the room temperature from sensor SE1. The room temperature Tin is set to 25 degrees.
Read bath temperature from sensor SE3. The bath temperature Tfu is set to 22 degrees.
The roof temperature is read from sensor SE4. The roof temperature Tya is set to 50 degrees.
The geothermal temperature is read from the sensor SE8. The geothermal temperature Tci is 24 degrees.

The temperature difference T ₀ is calculated (step S103) and compared with the season determination constant (A, B) (step S104). Here, T ₀ = Tout−Tin = 35−25 = 10.
Since the difference (T ₀ = 10) between the outside air temperature Tout and the room temperature Tin is 5 ° C. or more, the summer mode is determined (steps S105 and S107).

The geothermal temperature (Tci = 24) is compared with the bath temperature (Tfu = 22) (step S108).
Since the bath temperature (Tfu) is lower, the ventilation process in the summer mode C is executed (step S110).
The damper V6 is closed and switched to a path for taking in outside air from the first air suction port 9 (step S221).
At the same time, the damper V1 is closed, and the suction path of the air conditioner outdoor unit 4 and the exhaust path for ventilation from the house are connected (step S222).
The dampers V2, V3, V4 and V5 are switched to the path on the bath exchanger side (step S223).

A ventilation operation is performed for one minute (step S224).
The time, ventilation operation, and ventilation integration time are written into the memory (step S10).
Returning to step S3, the above operation is repeated.
After that, when the 2-hour ventilation process is finished, the next 2-hour ventilation process is started.

In FIG. 19, in this Example 5, the temperature profile of the taken-out outside air (take-in outside air) and exhaust air is shown.
The high temperature outside air (Tout = 35 degrees) is heat exchanged by the underground heat exchanger (Tci = 24 degrees), and the temperature decreases somewhat (35 ℃ ~ 24 depending on the contact time with the underground heat exchanger) ), The temperature is further lowered by the heat exchange in the bath heat exchanger (Tfu = 22 degrees) (the bath heat exchanger temperature is 22 ° C, but the temperature after the heat exchange is slightly higher) Only cooled.)
Finally, heat is exchanged with the exhausted air from the room (Tin = 25 degrees) and introduced into the room.
On the other hand, the temperature of exhaust air (Tin = 25 degrees) from the room rises due to heat exchange by the heat exchanger 4. Furthermore, heat is exchanged with the heat exchanger 5 of the outdoor unit, and it is discharged outside.
When the air conditioner is operating, the heat exchanger temperature of the outdoor unit is often higher than the outside air temperature (Tout = 35 degrees), and the exhausted air may be higher than the outside air temperature.

<Example 6>
Here, an example in which the air conditioner or the like is operating in the winter mode E (FIG. 16) will be described.
First, the initial ventilation pattern (initial ventilation information) shown in FIG. 6 is input (step S1).
For example, enter the following data:
From 0:00 on January 1 to 0:04 on January 1 for 5 minutes,
0:05 on January 1 to 0:09 on January 1
0:10 on January 1 to 0:14 on January 1 for 5 minutes,
0:15 on January 1 to 0:19 on January 1 Ventilation stop,
From 0:20 on January 1 to 0:25 on January 1 for 5 minutes,
From 0:25 on January 1 to 0:29 on January 1, ventilation stopped.
From 0:30 on January 1 to 1:59 on January 1 Ventilation stopped.

Then, every 2 hours cycle, the same ventilation operation is input so that the accumulated time is 15 minutes and the ventilation stop is 105 minutes, and stored in the memory.
The stored initial ventilation information is read from the memory (step S2).

When the time reaches 0:00 on January 1, it is checked whether it is the scheduled ventilation time (step S3).
If the scheduled ventilation time is reached, it is confirmed whether the air conditioner and the electric heating device are operating (step S4).
When the air conditioner or the electric heating device is operating, it is confirmed whether the predetermined ventilation operation can be completed even if the ventilation operation is shifted (step S5).
If the predetermined ventilation operation does not end when the ventilation operation is shifted, the ventilation process is executed even if the air conditioner and the electric heating device are operating (step S9).

If the predetermined ventilation operation ends even after shifting, it is checked whether the gas or oil heating equipment is operating (step S6). Further, it is confirmed whether or not a ventilation non-operation period (for example, 30 minutes) has already passed (step S7).
If the gas or oil heating equipment is not operating and the inactive period has not elapsed, the new time for shifting the ventilation, the ventilation operation, and the accumulated ventilation time are stored in the memory (step S8).
Returning to step S3 again, the above process is repeated.

  Whether the air conditioner or the like is not in operation (step S4), whether the predetermined ventilation operation is not completed when the ventilation operation is shifted (step S5), whether the oil or gas heating device is in operation (step S6), a predetermined period When the ventilation operation is not performed as described above (step S7), the ventilation process is executed (step S9).

In step S9, temperature data is acquired from each temperature sensor (step S102).
Reads the outside air temperature from sensor SE2. The outside air temperature Tout is set to 5 degrees.
Read room temperature from sensor SE1. The room temperature Tin is 18 degrees.
Read bath temperature from sensor SE3. The bath temperature Tfu is set to 30 degrees.
Read the roof temperature from sensor SE4. The roof temperature Tya is 15 degrees.
Read geothermal temperature from sensor SE8. The geothermal temperature Tci is 10 degrees.

The temperature difference T ₀ is calculated (step S103) and compared with the season determination constant (A, B) (step S104). Here, T ₀ = Tout−Tin = 5−18 = −13.
Since the difference between the outside air temperature and the room temperature (T ₀ = −13) is lower than −5 ° C., the winter mode is determined (steps S105 and S107).

  Since the bath temperature (Tfu = 30) is higher than the roof temperature (Tya = 15) and the geothermal temperature (Tci = 10), the ventilation process in the winter mode E is executed (step S115).

The damper V6 is closed and switched to a path for taking in air from the air suction port 9 (step S241).
At the same time, the damper V1 is closed to connect the suction of the air conditioner outdoor unit 4 and the indoor exhaust port 3 from the house (step S242).
The dampers V2, V3, V4 and V5 are switched to the bath heat exchanger side (step S243).
A ventilation operation is performed for one minute (step S244).

The time, ventilation operation, and ventilation integration time are written into the memory (step S10).
Returning to step S3, the above operation is repeated.
Thereafter, the predetermined ventilation operation for 2 hours is terminated, and the next ventilation operation is performed.
In addition, even if predetermined ventilation is complete | finished, when gas and oil heating equipment are operating, it is preferable to perform ventilation operation.

FIG. 21 shows temperature profiles of intake air (intake outside air) and exhaust air in the sixth embodiment.
Cold outdoor air in winter (Tout = 5 degrees) is first heat-exchanged in a geothermal exchanger (Tci = 10 degrees), and the temperature rises somewhat. The temperature is a temperature between the outside air temperature of 5 degrees and the underground heat exchanger of 10 degrees.
Thereafter, heat is exchanged in a bath heat exchanger (Tfu = 30 degrees), and the temperature further rises. The temperature is slightly lower than the bath heat exchanger temperature.
Furthermore, heat is exchanged with the ventilation air (Tin = 18 degrees) exhausted from the room, and it is heated and taken into the room.
On the other hand, the temperature of the exhausted air (Tin = 18 degrees) is somewhat lowered due to heat exchange with the outside air taken in.
Furthermore, by exchanging heat with the heat exchanger 5 of the outdoor unit 4 of the air conditioner, the temperature is lowered below the outside air temperature and then discharged to the outside.
FIG. 20B shows temperature profiles of intake air (intake outside air) and exhaust air in the case of conventional ventilation.
Winter outdoor air (Tout = 5 degrees) is directly taken into the room and is adjusted to 18 degrees while being heated by a heating device such as an air conditioner while being mixed with room air.
On the other hand, the discharged air is discharged at 18 degrees and mixed with the outside air to reach the atmospheric temperature.

<Example 7>
Here, an example of the ventilation process in the winter mode F (FIG. 17) will be described.
First, the initial ventilation pattern (initial ventilation information) shown in FIG. 6 is input (step S1).
For example, assume that the following data is input.
From January 1, 0:00 to January 1, 00:04, 5 minutes ventilation,
From 0:05 on January 1 to 0:09 on January 1
From 0:10 on January 1 to 0:14 on January 1, 5 minutes ventilation,
0:15 on January 1 to 0:19 on January 1
From 0:20 on January 1 to 0:25 on January 1 for 5 minutes,
From 0:25 on January 1 to 0:29 on January 1
From 0:30 on January 1, 1:59 on January 1, ventilation stopped.

Thereafter, data is input and stored in the memory so that a ventilation operation for 15 minutes and a stop operation for 105 minutes are performed every two hours.
The stored initial ventilation information is read from the memory (step S2).
When the time is 0:00 on January 1st, the read ventilation information is checked to determine whether it is the scheduled ventilation time (step S3).

If the scheduled ventilation time is reached, it is confirmed whether the air conditioner and the electric heating device are operating (step S4).
When the air conditioner or the electric heating device is operating, it is checked whether or not the ventilation operation may be shifted (whether or not the predetermined ventilation operation can be ended even if the ventilation start time is shifted) (step S5). .
If the ventilation operation can be shifted, it is checked whether the gas or oil heating equipment is operating (step S6). When not operating, it is confirmed whether the ventilation non-operation period has passed (step S7).

If the gas or oil heating equipment is not operating and the inoperative period has not elapsed, the new time after the ventilation operation is shifted, the ventilation operation, and the integrated ventilation time are stored in the memory (step S8).
Returning to step S3 again, the above process is repeated.

  When the air conditioner or the like is not operating (step S4) or when the ventilation operation cannot be shifted (step S5), the ventilation operation is executed (step S9).

In step S9, temperature data is acquired from each temperature sensor (step S102).
Read from the outside temperature sensor SE2. The outside air temperature Tout is set to 5 degrees.
Read from room temperature sensor SE1. The room temperature Tin is 18 degrees.
Read bath temperature from sensor SE3. The bath temperature Tfu is 15 degrees.
Read the roof temperature from sensor SE4. The roof temperature Tya is 22 degrees.
Read geothermal temperature from sensor SE8. The geothermal temperature Tci is 17 degrees.

The temperature difference T ₀ = Tout−Tin = 5−18 = −13 is calculated (step S103).
The temperature difference T ₀ is compared with the season determination constant (A, B) (step S104).
Since the temperature difference (T ₀ = −13) between the outside air temperature Tout and the room temperature Tin is lower than −5 ° C., it is determined that the winter mode is set (steps S105 and S107).

  Since the roof temperature (Tya = 22) is higher than the bath temperature (Tfu = 15) and the geothermal temperature (Tci = 17), the winter mode F is determined and the winter mode ventilation process is executed (step S117).

The damper V6 is closed and switched to a route for taking in air from the first air suction port 9 (step S251).
At the same time, the damper V1 is closed and the suction of the outdoor unit 4 of the air conditioner and the indoor exhaust port 3 from the house are connected (step S252).
The damper V2, the damper V3, the damper V4, and the damper V5 are switched to the roof heat exchanger side (step S253).
A ventilation operation is performed for one minute (step S254).

The time, ventilation operation, and ventilation integration time are written into the memory (step S10).
Returning to step S3, the above operation is repeated (steps S3 to S10).
Thereafter, the predetermined ventilation operation is finished in 2 hours, and the next ventilation operation is performed.

FIG. 22 shows temperature profiles of intake air (taken outside air) and exhaust air in the seventh embodiment.
Here, the cold outdoor air (Tout = 5) in winter is heat-exchanged in the underground heat exchanger (Tci = 17), and the temperature rises slightly. The temperature will be between 5 and 17 degrees.
Furthermore, heat is exchanged with the roof heat exchanger (Tya = 22) heated by solar heat, and the temperature rises. The temperature is heat exchanged to a temperature below 22 ° C.
Finally, heat is exchanged with the indoor exhaust air, and the temperature further rises and is supplied indoors.
On the other hand, the exhaust air (Tin = 18) exchanges heat with the indoor intake air and decreases its temperature, and further exchanges heat with the heat exchanger 5 of the air conditioner outdoor unit 4 to further reduce the temperature. Is discharged.

<Example 8>
Here, an embodiment of the ventilation process in the winter mode D (FIG. 15) will be described.
An initial operation pattern (initial ventilation information) of ventilation shown in FIG. 6 is input (step S1).
For example, enter the following data:
From January 1, 0:00 to January 1, 00:04, 5 minutes ventilation,
From 0:05 on January 1 to 0:09 on January 1
From 0:10 on January 1 to 0:14 on January 1, 5 minutes ventilation,
0:15 on January 1 to 0:19 on January 1
From 0:20 on January 1 to 0:25 on January 1 for 5 minutes,
From 0:25 on January 1 to 0:29 on January 1
From 0:30 on January 1, 1:59 on January 1, ventilation stopped.

After that, the same ventilation operation is input every 2 hours so that the accumulated time is 15 minutes and the ventilation stop is 105 minutes, and is stored in the memory.
The stored initial ventilation information is read from the memory (step S2).

When the scheduled ventilation time is reached, it is confirmed whether the air conditioner and the electric heating device are operating (steps S3 and S4).
When the air conditioner or the like is operating, it is confirmed whether the predetermined ventilation can be completed even if the ventilation operation is shifted (step S5).

If the shift is possible, it is confirmed whether or not the gas oil heating device is operating (step S6).
Furthermore, it is confirmed whether a ventilation non-operation period (for example, 30 minutes) has passed (step S7).
If the gas / oil heating equipment is not operating and the ventilation non-operation period has not elapsed, the ventilation process is not performed, and the ventilation pattern (ventilation information) is changed to the information after the shift (step S8).
On the other hand, if the gas / oil heating device is operating or if the ventilation non-operation period has already elapsed, a ventilation process is executed (step S9).
The ventilation process is executed even when the air conditioner or the electric heating device is not operating or cannot be shifted (step S9).

In step S9, current temperature data is acquired from each temperature sensor (step S102).
Here, it is assumed that the following temperature data has been acquired.
Outside temperature sensor SE2: The outside temperature Tout is set to 5 degrees.
Indoor temperature sensor SE1: The indoor temperature Tin is set to 18 degrees.
Bath temperature sensor SE3: The bath temperature Tfu is set to 10 degrees.
Roof temperature sensor SE4: The roof temperature Tya is set to 15 degrees.
Geothermal temperature sensor SE8: The geothermal temperature Tci is set to 17 degrees.

The temperature difference T ₀ = Tout−Tin = 5−18 = −13 is calculated (step S103).
The temperature difference T ₀ is compared with the season determination constants (A, B) (step S104).
Since the temperature difference T ₀ (= −13) is smaller than the constant A (= 5), the winter mode is determined (steps S105 and S107).
Furthermore, since the geothermal temperature Tci (= 17) is higher than the bath temperature Tfu (= 10) and the roof temperature Tya (= 15), it is determined as the winter mode D, and ventilation processing using geothermal exchange is executed (step). S112, S113).

The damper V6 is closed (step S231).
The damper V1 is closed (step S232).
The dampers V2 and V5 are switched so that the underground heat exchanger is connected to the path to the outside air intake 2 (step S233).
Using the outdoor unit fan, a ventilation operation is performed for a certain time (for example, 1 minute) (step S234).

The actual ventilation information (ventilation execution time, ventilation ON / OFF, accumulated ventilation time) is stored in the memory (step S10).
Then, it returns to step S3 and repeats the said process (step S3-S10).
In the winter mode D, when the air conditioner or the like is operating and the gas heating device or the like is not operating, the ventilation pattern is as shown in FIG. Further, when both the air conditioner and the gas heating device are operating, for example, a ventilation pattern as shown in FIG. 9 is obtained.

FIG. 20 (a) shows an embodiment of the temperature profile of intake air (intake outside air) and exhaust air in the winter mode D. FIG.
The outside air having a temperature Tout (= 5) lower than the indoor temperature Tin (= 18) exchanges heat with geothermal heat in the underground heat exchanger HE1, and the temperature rises. The temperature is heated within a temperature range between the outside air temperature of 5 degrees and the underground heat exchanger temperature of 17 degrees.
Further, the intake air (taken outside air) is heat-exchanged with the exhaust air by the heat exchanger HE4, and the temperature further rises and is supplied indoors.
On the other hand, the air exhausted from the room (Tin = 18) is heat-exchanged with the intake air (take-in outside air) by the heat exchanger HE4 to be lowered in temperature, and exchanges heat with the heat exchanger 5 of the air conditioner outdoor unit 6. Then, the temperature is further lowered and discharged to the outside.
In addition, when the air conditioner intermittently performs indoor heating, the temperature of the heat exchanger of the outdoor unit of the air conditioner may be lower than the outside air temperature.

DESCRIPTION OF SYMBOLS 1 Housing 2 Outside air intake 3 Indoor exhaust port 4 Air-conditioner outdoor unit 5 Outdoor unit heat exchanger (air-conditioning heat exchanger)
6 Outdoor unit fan (ventilation fan)
7 Air conditioner indoor unit 8 Air conditioner compressor 9 First outside air inlet 10 Electric heating device 11 Second outside air inlet 12 Control unit 13 Gas or oil heating device 14 Intersection 15 External exhaust port 101 Ventilation control unit (control unit)
102 Temperature monitoring unit (temperature sensor)
103 Temperature Monitoring Device 104 Device Monitoring Unit 105 Air Conditioning Device 106 Ventilation Power Unit (Ventilation Fan)
107 Route switching unit 110 Storage unit (memory)
111 Initial ventilation information 112 Actual ventilation information 113 Equipment monitoring information 114 Temperature data 115 Damper control information HE Heat exchanger HE1 Ground heat exchanger HE2 Bath heat exchanger HE3 Roof heat exchanger HE4 Inside / outside heat exchanger SE1 Temperature sensor (room temperature) )
SE2 Temperature sensor (outside air inlet)
SE3 Temperature sensor (bath heat exchanger)
SE4 Temperature sensor (roof heat exchanger)
SE5 Temperature sensor (air conditioner blowout)
SE6 Temperature sensor (indoor / outdoor air intake)
SE7 Temperature sensor (air conditioner outdoor unit heat exchange)
SE8 Temperature sensor (Ground heat exchanger)
SE9 Temperature sensor (electric heating equipment)
SE10 Temperature sensor (gas or oil heating equipment)
V1 Branch damper V2 Branch damper V3 Branch damper V4 Branch damper V5 Branch damper V6 Branch damper

Claims (11)

An exhaust path for exhausting indoor air to the outside;
A suction path for sucking outside air into the room;
A ventilation power unit that is arranged on the exhaust path, air-conditions the room air, and forcibly discharges the air that has passed through the exhaust path to the outside;
The exhaust path and the suction path are arranged at positions adjacent to each other, intersecting the exhaust air flowing through the exhaust path and the suction air flowing through the suction path to exchange heat,
A heat exchanging unit that adjusts the temperature of the outside air that is connected between the outside air intake port through which the outside air is introduced and the intersection, on the suction path;
Indoors, the outside air inlet, and a temperature monitoring unit for measuring the temperature of the heat exchange unit,
A ventilation system comprising: a ventilation control unit that controls the ventilation power unit based on the temperature measured by the temperature monitoring unit. The ventilation power unit is a ventilation fan of an air conditioner,
2. The ventilation system according to claim 1, wherein the ventilation system is provided between the intersecting portion provided on the exhaust path and an external exhaust port for exhausting air to the outside.   The crossing portion is in an area where the exhaust path and the suction path are arranged in parallel, and contacts both the exhaust air flowing through the exhaust path in the area and the intake air flowing through the suction path. The ventilation system according to claim 1 or 2, further comprising:   The said heat exchange part contains at least 1 or more heat exchangers among a ground heat exchanger, a bath heat exchanger, and a roof heat exchanger, The any one of Claim 1, 2, or 3 characterized by the above-mentioned. Ventilation system. When the heat exchanging unit is composed of a plurality of heat exchangers,
A path switching unit for switching the heat exchanger connected to the suction path between the outside air inlet and the intersection,
The ventilation system according to claim 4, wherein the intake air after the temperature is adjusted by a connected heat exchanger is guided to the intersection. The temperature monitoring unit measures the temperature of each heat exchanger of the heat exchange unit,
The ventilation control unit determines a heat exchanger to be connected to the suction path based on the measured temperature difference of each heat exchanger, and connects the determined heat exchanger to the suction path by the path switching unit. The ventilation system according to claim 5, wherein A storage unit storing initial ventilation information in which a time schedule for controlling the ventilation power unit and the path switching unit is set;
The ventilation system according to claim 6, wherein the ventilation control unit controls the ventilation power unit and the path switching unit based on the initial ventilation information to execute a predetermined legally-regulated ventilation process. . It further includes a device monitoring unit that detects the operation and stop of the air conditioning device,
When the ventilation control unit detects that the air conditioner is operating by the device monitoring unit, the ventilation control unit holds without performing the ventilation process set by the initial ventilation information,
8. The ventilation system according to claim 7, wherein when the air conditioner thereafter stops, the suspended ventilation process is executed.   The ventilation system according to claim 8, wherein the air conditioner is one of an air conditioner, an electric heater, an oil heater, and a gas heater. When the air conditioner is an air conditioner or an electric heater,
The ventilating process is continued without being suspended even when it is detected that the air conditioner is operating by the device monitoring unit in order to execute a predetermined legal ventilation process. 9 ventilation systems. When the air conditioning device includes an oil heating device or a gas heating device,
When the device monitoring unit detects that the oil heating device or the gas heating device is operating, a ventilation process is executed separately from the time schedule set by the initial ventilation information. The ventilation system of claim 10.

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