KR102482536B1 - Ventilator and control method thereof - Google Patents

Abstract

An object of the present invention is to provide a ventilation device and a method for controlling the ventilation device that can reduce energy consumption by performing outdoor air cooling and outdoor air heating using outdoor air during indoor ventilation. A ventilation system control method to realize this is a heat exchange mode in which outdoor air flowing into the room and indoor air discharged to the outside are exchanged in a total heat exchanger, and the outdoor air and indoor air are not heat exchanged in the total heat exchanger. A control method of a ventilator that ventilates indoor air by operating in a bypass mode that does not operate, comprising the steps of: a) receiving temperature information and humidity information of indoor air and outdoor air by a controller; b) comparing the temperature of the received indoor air and outdoor air in the control unit; c) As a result of the comparison in step b), the control unit compares the enthalpy levels of the indoor air and the outdoor air when the temperature of the indoor air is lower and higher than that of the outdoor air, respectively, and exchanges heat with the bypass mode. It is characterized in that it includes the step of controlling to operate in one of the modes.

Description

Ventilator and control method of ventilator {Ventilator and control method thereof}

The present invention relates to a ventilator and a method for controlling the ventilator, and more particularly, to a ventilator capable of cooling and heating a room using outdoor air when ventilating a room, and a method for controlling the ventilator.

In general homes and offices, cooling and heating devices are installed to perform indoor cooling and heating according to seasonal changes, and air conditioners perform cooling and heating by cooling and heating indoor air. , boilers, etc.

Indoors, such as general homes and offices, where such air conditioning and heating devices are installed are maintained in a sealed state to improve cooling and heating efficiency. Odor is generated or foreign substances such as dust float. Therefore, indoor air is ventilated at regular intervals to remove odors and dust from indoors. Ventilation is used to more quickly exhaust polluted indoor air to the outdoors and supply fresh outdoor air to the indoors while maintaining the indoor temperature. device is used

A conventional ventilator includes a first air supply chamber through which outdoor air is introduced, a second air supply chamber through which outdoor air is supplied to the room via the first air supply chamber, a first exhaust chamber through which indoor air is introduced, and the first exhaust gas chamber. A second exhaust chamber that discharges indoor air through the seal to the outdoors, heat exchange between indoor air flowing from the first exhaust chamber to the second exhaust chamber and outdoor air flowing from the first air supply chamber to the second air supply chamber A total heat exchanger, an air supply blower for forcibly drawing the outdoor air into the room, and an exhaust blower for forcibly discharging the indoor air to the outdoors.

In addition, the ventilation device is provided with an air supply blower forcibly sucking outdoor air, an exhaust blower for forcibly sucking indoor air, and a bypass passage forming an air flow path so that outdoor air directly flows into the room without passing through the total heat exchanger. has been

This total heat exchange type ventilator has a greater energy saving effect in winter and summer than in spring or summer, which is an interseason.

In the case of the summer season, there is a case where the outdoor temperature is lower than the indoor temperature. In this state, if ventilation is performed in which total heat exchange is performed, the temperature of the indoor air becomes higher than that of the outdoor air, which may cause discomfort to the user. Therefore, in this case, the temperature of the room can be lowered by performing outdoor air cooling so that outdoor air directly flows into the room through the bypass passage without passing through the total heat exchanger.

However, the conventional ventilator determines whether to operate in a total heat exchange mode in which heat is exchanged through a total heat exchanger or in a bypass mode in which heat is exchanged through a total heat exchanger by comparing only the outdoor temperature with the indoor temperature.

In this way, if the operation is performed by comparing only the temperature without considering the humidity, a comfortable indoor environment is not created due to the humidity of the indoor and outdoor areas, and a problem that gives a user discomfort occurs.

As a prior art for bypass-type ventilators, Korean Patent Registration No. 10-1790696 discloses “a heat exchange-type ventilator with bypass and recirculation functions”.

The present invention has been made to solve the above-mentioned problems, and to provide a ventilation device and a control method of the ventilation device that can reduce energy consumption by performing outdoor air cooling and outdoor air heating using outdoor air during indoor ventilation. There is a purpose.

Another object of the present invention is to provide a ventilation device and a control method of the ventilation device that can provide a pleasant indoor environment by selecting a bypass mode and a total heat exchange mode to suit various conditions of indoor and outdoor temperature and indoor and outdoor humidity during ventilation. is in

Another object of the present invention is to provide a ventilation device and a control method of the ventilation device that can provide a comfortable indoor environment by selecting a control mode suitable for each situation by determining whether an indoor space is currently being cooled or heated. is in

In order to achieve the above object, a method for controlling a ventilation apparatus of the present invention includes a heat exchange mode in which outdoor air flowing into the room and indoor air discharged to the outside exchange heat in a total heat exchanger, and the outdoor air and the indoor air transfer the heat. A control method of a ventilator that ventilates indoor air by operating in a bypass mode in which heat exchange is not performed in an exchanger, comprising the steps of: a) receiving temperature information and humidity information of indoor air and outdoor air by a controller; b) comparing the temperature of the received indoor air and outdoor air in the control unit; c) As a result of the comparison in step b), the control unit compares the enthalpy levels of the indoor air and the outdoor air when the temperature of the indoor air is lower and higher than that of the outdoor air, respectively, and exchanges heat with the bypass mode. and controlling to operate in one of the modes.

Between step b) and step c), if the temperature of the indoor air is lower than the temperature of the outdoor air, a step of comparing the temperature of the indoor air with a cooling reference temperature for indoor cooling is further provided; When the temperature of the indoor air is lower than the cooling reference temperature, the operation of the bypass mode and the heat exchange mode according to the comparison between the enthalpy levels of the indoor air and the outdoor air occurs when the temperature of the indoor air is higher than the cooling reference temperature. The operation of the bypass mode and the heat exchange mode according to the comparison of the enthalpy levels of the indoor air and the outdoor air may be reversed.

When the temperature of the indoor air is lower than the cooling reference temperature, the heat exchange mode is operated if the enthalpy of the indoor air is greater than the enthalpy of the outdoor air, and if the enthalpy of the indoor air is smaller than the enthalpy of the outdoor air, the By It can be operated in pass mode.

When the temperature of the indoor air is higher than the cooling reference temperature, and as a result of comparing the enthalpy levels of the indoor air and outdoor air, if the enthalpy of the indoor air is greater than the enthalpy of the outdoor air, the bypass mode is operated, and the indoor air is operated in the bypass mode. When the enthalpy of the air is smaller than the enthalpy of the outdoor air, the heat exchange mode may be operated.

Between the steps b) and c), when the temperature of the indoor air is higher than the temperature of the outdoor air, a step of comparing the temperature of the indoor air with a heating reference temperature for indoor heating is further provided; When the temperature of the indoor air is lower than the heating reference temperature, the operation of the bypass mode and the heat exchange mode according to the comparison between the enthalpy levels of the indoor air and the outdoor air occurs when the temperature of the indoor air is higher than the heating reference temperature. The operation of the bypass mode and the heat exchange mode according to the comparison of the enthalpy levels of the indoor air and the outdoor air may be reversed.

When the temperature of the indoor air is higher than the heating reference temperature, the bypass mode is operated if the enthalpy of the indoor air is greater than the enthalpy of the outdoor air, and the enthalpy of the indoor air is lower than the enthalpy of the outdoor air. It can be operated in heat exchange mode.

When the temperature of the indoor air is lower than the heating reference temperature, the heat exchange mode is operated if the enthalpy of the indoor air is greater than the enthalpy of the outdoor air, and if the enthalpy of the indoor air is smaller than the enthalpy of the outdoor air, the By It can be operated in pass mode.

The temperature information and humidity information of the indoor air are received from a temperature sensor and a humidity sensor; The temperature information and humidity information of the outdoor air may be received from a temperature sensor and a humidity sensor or may be received from an external server.

The indoor space may be composed of a plurality of indoor spaces, and passages through which the indoor air and outdoor air flow may be set so that the ventilation is performed only in some indoor spaces among the plurality of indoor spaces.

An optimum control area defined by the temperature within a certain range and the humidity within a certain range is set, and the control unit determines whether the temperature and humidity of the current indoor space are out of the range of the optimum control area, and the optimum control area is determined. When out of the range, the heat exchange mode or the bypass mode may be operated so that the temperature and humidity of the indoor space fall within the range of the optimal control range.

The air volume of outdoor air supplied to the indoor space may be varied so that the temperature and humidity of the indoor space fall within the optimal control range.

The control unit may determine whether the temperature and humidity of the current indoor space are out of the range of the optimal control region, and operate in the heat exchange mode when located within the optimal control region.

The ventilator of the present invention includes a heat exchange mode in which outdoor air flowing into a room and indoor air discharged to the outside are exchanged in a total heat exchanger, and a bypass mode in which heat exchange is not performed between the outdoor air and indoor air in the total heat exchanger. A ventilator that ventilates indoor air by operating a ventilation system that receives temperature information and humidity information of the indoor air and outdoor air, compares the received temperatures of the indoor air and outdoor air, and determines that the temperature of the indoor air is a control unit that compares the enthalpy levels of the indoor air and the outdoor air when the temperature is lower than the temperature of the indoor air and when the temperature of the indoor air is higher than the temperature of the outdoor air, and controls the operation in one of the bypass mode and the heat exchange mode; include

The controller may include a first temperature sensor and a first humidity sensor that sense the temperature and humidity of the indoor air and provide the temperature and humidity information of the indoor air to the control unit.

The temperature information and humidity information of the outdoor air may be received from the second temperature sensor and the second humidity sensor or may be received from an external server.

a storage unit for storing an optimum control region defined by a certain range of temperature and a certain range of humidity; The control unit may control operation in the bypass mode or heat exchange mode so that the temperature and humidity of the indoor air are out of the optimum control range so as to fall within the optimum control range.

According to the present invention, outdoor air cooling and outdoor air heating can be performed using outdoor air during indoor ventilation, so energy consumption can be reduced.

In addition, a bypass mode and a total heat exchange mode can be selected to suit various conditions of indoor and outdoor temperature and indoor/outdoor humidity during ventilation, so that a comfortable indoor environment can be provided.

In addition, since it is possible to determine whether the indoor space is currently being cooled or heated, a comfortable indoor environment can be provided by selecting a control mode suitable for each situation.

In addition, since only some spaces among a plurality of indoor spaces can be selectively ventilated, the effects of outdoor air cooling and outdoor air heating can be maximized.

In addition, a comfortable indoor environment can be implemented by controlling the temperature and humidity of the current indoor space to fall within the optimal control range.

1 is a plan view of a ventilator according to the present invention
Figure 2 is a side view of a ventilator according to the present invention
3 is a control block diagram of a ventilator according to the present invention
Figure 4 is a flow chart showing a control method of a ventilator according to an embodiment of the present invention
Figure 5 is a graph showing the optimal control area in the humidity chart
6 is a flowchart showing a control method of a ventilation device according to another embodiment of the present invention

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 to 3 , the ventilation apparatus 1 according to an embodiment of the present invention includes a first exhaust chamber 10 into which indoor air is introduced, and indoor air passing through the first exhaust chamber 10 a second exhaust chamber (20) for discharging to the outdoors, a first air supply chamber (30) for introducing outdoor air, and a second air supply chamber (40) for supplying outdoor air via the first air supply chamber (30) to the room. ), and heat exchange between indoor air flowing from the first exhaust chamber 10 to the second exhaust chamber 20 and outdoor air flowing from the first air supply chamber 30 to the second air supply chamber 40 It includes a total heat exchanger (50).

In addition, the ventilator 1, based on the diaphragm 60, the first exhaust chamber 10, the second exhaust chamber 20, the first air supply chamber 30, the upper side of the diaphragm 60, A secondary air supply chamber 40 and a total heat exchanger 50 are provided, and a bypass passage 70 is provided below the diaphragm 60 .

In addition, the ventilator 1 includes a heat exchange mode in which heat is exchanged between exhausted indoor air and supplied outdoor air, and a bypass for cooling or heating the indoor air by supplying outdoor air to the indoor side without heat exchange with the indoor air. It is configured to include a control unit 90 that controls the operation of the ventilator 1 to operate in the mode.

An indoor air inlet 11 through which indoor air is introduced is provided on the indoor side of the first exhaust chamber 10, and a connection passage 11a communicating with the bypass passage 70 and heat transfer in the first exhaust chamber 10 A damper 12 for selectively opening and closing the connection passage 11b communicating to the exchanger 50 is provided. The damper 12 may be configured as a motorized damper in which a plate rotates around a hinge (not shown).

An indoor air outlet 21 through which indoor air is discharged to the outdoor side is provided on the outdoor side of the second exhaust chamber 20 . A communication hole 20a communicating with the bypass passage 70 is formed at the bottom of the second exhaust chamber 20, and an exhaust blower for forcibly sucking indoor air to the outside is inside the second exhaust chamber 20. (23) is provided.

An outdoor air inlet 31 through which outdoor air is introduced is provided on the outdoor side of the first air supply chamber 30 .

An outdoor air outlet 41 through which outdoor air is discharged to the indoor side is provided on the indoor side of the second air supply chamber 40, and an air supply blower for forcibly sucking outdoor air indoors inside the outdoor air outlet 41 ( 43) is provided.

The total heat exchanger 50 has a structure in which a flow path through which indoor air flows and a flow path through which outdoor air flow are alternately formed therein so that heat can be exchanged between indoor air and outdoor air. In addition, a filter 51 for filtering foreign substances included in supplied outdoor air or recirculated indoor air is provided on one side of the total heat exchanger 50 facing the first air supply chamber 30.

A first temperature sensor 13 and a first humidity sensor 14 are provided at the indoor air inlet 11 to detect the temperature and humidity of the indoor air. In addition, a second temperature sensor 15 and a second humidity sensor 16 are provided at the outdoor air inlet 31 to detect the temperature and humidity of the outdoor air. However, the location at which the first temperature sensor 13, the first humidity sensor 14, the second temperature sensor 15, and the second humidity sensor 16 are installed is not limited thereto, and may be installed at other locations. Do.

The temperature information and humidity information sensed by the first temperature sensor 13, the first humidity sensor 14, the second temperature sensor 15, and the second humidity sensor 16 are received by the control unit 90.

Meanwhile, instead of having the second temperature sensor 15 and the second humidity sensor 16, it may be configured to receive temperature information and humidity information of outdoor air from an external server (not shown). In this case, the ventilator 1 may be connected to the server through a wired or wireless internet network.

Referring to FIG. 4, a method for controlling a ventilator according to an embodiment of the present invention will be described.

In step S10, temperature information and humidity information of indoor air and outdoor air are received by the controller 90.

Temperature information and humidity information about indoor air are received from the first temperature sensor 130 and the first humidity sensor 14, and information about outdoor air is received from the second temperature sensor 15 and the second humidity sensor 16. Temperature information and humidity information are received.

In step S11, the control unit 90 compares the received temperature information of indoor air and outdoor air.

Here, by comparing the temperature of indoor air and outdoor air, it is determined whether outdoor air heating or outdoor air cooling is required. That is, if the temperature of the indoor air (T _ra ) is lower than the temperature of the outdoor air (T _oa ), the process proceeds to step S21 so that the outdoor air can be heated using the outdoor air. Otherwise, the outdoor air is cooled using the outdoor air. The process proceeds to step S31 so as to be available.

In step S21, the indoor air temperature (T _ra ) is compared with the cooling reference temperature.

Here, by comparing the indoor air temperature (T _ra ) with the cooling reference temperature (eg, 24° C.), it is determined whether or not the room is currently in a state in which cooling is required. Depending on the comparison result with the cooling reference temperature, the operation mode according to the enthalpy comparison result described later is changed.

As a result of the comparison, if the indoor air temperature (T _ra ) is higher than the cooling reference temperature, the process proceeds to step S24. Otherwise, the process proceeds to step S22.

In step S22, the enthalpy of indoor air (I _r ) and the enthalpy of outdoor air (I _o ) are compared. Here, the enthalpy of indoor air (I _r ) can be calculated from the temperature and humidity of the indoor air received from the first temperature sensor 13 and the first humidity sensor 14, and the enthalpy of outdoor air (I _o ) is It can be calculated from the temperature and humidity of outdoor air received from the second temperature sensor 15 and the second humidity sensor 16. In this embodiment, the enthalpy can be obtained using a known hygroscopic diagram in which temperature and humidity are variables, and the same applies below.

As a result of the enthalpy comparison, if the enthalpy of indoor air (I _r ) is greater than the enthalpy of outdoor air (I _o ), step S23 is performed, and otherwise, step S50 is performed.

In step S23, the ventilator 1 is operated in a heat exchange mode. That is, heat exchange is performed through the total heat exchanger 50 while indoor air is discharged to the outdoors and outdoor air is introduced into the room. When operated as described above, indoor air having a large enthalpy (I _r ) is discharged to the outdoors, and outdoor air having a low enthalpy (I _o ) is introduced into the indoor space. do. Therefore, since outdoor air cooling is performed on the basis of enthalpy, it is possible to maintain a comfortable indoor state even when ventilation is performed.

For example, the conditions in which the operation is performed in the steps of S11, S21, S22, and S23 are, for example, when the indoor air temperature is 20°C, the indoor air humidity is 80%, the outdoor air temperature is 25°C, and the outdoor air humidity is 40%. can be

In step S50, the ventilator 1 is operated in the bypass mode according to the determination result of step S22. That is, indoor air is discharged to the outside, and outdoor air is introduced into the room without heat exchange with the indoor air. When operated in this way, indoor air with a small enthalpy (I _r ) is discharged to the outdoors, and outdoor air with a large enthalpy (I _o ) is introduced into the room. there is.

As an example, the conditions in which operation is performed in the steps of S11, S21, S22, and S50 are, for example, when the indoor air temperature is 20°C, the indoor air humidity is 60%, the outdoor air temperature is 25°C, and the outdoor air humidity is 50%. can be

In addition, comparing the above two cases, whether to proceed to step S23 or step S50 is determined based on the enthalpy difference according to the humidity of indoor air and outdoor air based on the determination result of step S22. Therefore, compared to the case where only the temperature of indoor air and outdoor air is compared and the heat exchange mode and the bypass mode are selected, the enthalpy in which the indoor humidity is reflected is compared, and the ventilator (1) is operated in a mode suitable for indoor and outdoor conditions to create a comfortable indoor environment. can do.

As a result of comparing the indoor air temperature (T _ra ) with the cooling reference temperature in step S21, if the indoor air temperature (T _ra ) is higher than the cooling reference temperature, the process proceeds to step S24, and the enthalpy of indoor air (I _r ) and the enthalpy of outdoor air (I _o ).

As a result of the enthalpy comparison, if the enthalpy of outdoor air (I _o ) is greater than the enthalpy of indoor air (I _r ), step S40 is performed, and otherwise, step S50 is performed.

When the temperature of the indoor air (T _ra ) is higher than the cooling reference temperature and the enthalpy of the outdoor air (I _o ) is greater than the enthalpy of the indoor air (I _r ) in a state in which it is determined that the cooling is necessary, another cooling device ( (not shown), it can be determined that cooling of the room is currently being performed. Therefore, when ventilation is performed, heat exchange between indoor air and outdoor air can be performed, thereby reducing energy consumption of the air conditioner.

In step S40, the ventilator 1 is operated in a heat exchange mode. That is, heat exchange is performed through the total heat exchanger 50 while indoor air is discharged to the outdoors and outdoor air is introduced into the room. When operated as described above, indoor air having a low enthalpy (I _r ) is discharged to the outdoors, and outdoor air having a large enthalpy (I _o ) is introduced into the room. do.

As an example, the conditions in which operation is performed in the steps of S11, S21, S24, and S40 are, for example, when the indoor air temperature is 25°C, the indoor air humidity is 50%, the outdoor air temperature is 30°C, and the outdoor air humidity is 50%. can be

In step S50, the ventilator 1 is operated in the bypass mode according to the determination result of step S24.

In step S21, when it is determined that the temperature of the indoor air (T _ra ) is higher than the cooling reference temperature and the condition requires cooling, and the enthalpy of the indoor air (I _r ) is greater than the enthalpy of the outdoor air (I _o ), another It may be determined that the current cooling of the room is not performed by a cooling device (not shown).

Therefore, when operated in the bypass mode in step S50, indoor air having a large enthalpy (I _r ) is discharged to the outdoors, and outdoor air having a small enthalpy (I _o ) is introduced into the room, so outdoor air cooling by outdoor air is performed based on enthalpy. this is done

As an example, the conditions in which operation is performed in the steps of S11, S21, S24, and S50 are, for example, when the indoor air temperature is 25°C, the indoor air humidity is 85%, the outdoor air temperature is 30°C, and the outdoor air humidity is 60%. can be

In addition, by providing a step of comparing the indoor air temperature and the cooling reference temperature in step S21, the operation of the bypass mode and the heat exchange mode according to the enthalpy comparison in steps S22 and S24 are reversed.

That is, in step S22, when the enthalpy of indoor air (I _r ) is greater than the enthalpy of outdoor air (I _o ), the heat exchange mode is operated, and otherwise, the bypass mode is operated. On the other hand, in step S24, when the enthalpy of outdoor air (I _o ) is greater than the enthalpy of indoor air (I _r ), the heat exchange mode is operated, and otherwise, the bypass mode is operated. Therefore, energy consumption can be reduced according to various conditions of indoor air and outdoor air, and a more pleasant indoor environment can be realized.

On the other hand, as a result of comparing the temperatures of indoor air and outdoor air in step S11, if the temperature of outdoor air (T _ra ) is not higher than the temperature of indoor air (T _oa ), outdoor air can be cooled using outdoor air The process proceeds to step S31.

In step S31, the indoor air temperature (T _ra ) is compared with the heating reference temperature.

Here, by comparing the indoor air temperature (T _ra ) with the heating reference temperature (for example, 15° C.), it is determined whether or not the current room needs heating. According to the comparison result with the heating reference temperature, the operation mode according to the enthalpy comparison result described later is changed.

As a result of the comparison, if the indoor air temperature (T _ra ) is lower than the heating reference temperature, step S32 is performed, and otherwise, step S34 is performed.

In step S34, the enthalpy of indoor air (I _r ) and the enthalpy of outdoor air (I _o ) are compared. As a result of the enthalpy comparison, if the enthalpy of indoor air (I _r ) is smaller than the enthalpy of outdoor air (I _o ), step S40 is performed, and otherwise, step S50 is performed.

In step S40, the ventilator 1 is operated in a heat exchange mode. When operated as described above, indoor air having a low enthalpy (I _r ) is discharged to the outside, and outdoor air having a large enthalpy (I _o ) is introduced into the room. do. Therefore, it is possible to cool the outside air, but the outside air heating is performed based on enthalpy.

In this way, for example, the condition in which the operation is performed in the steps of S11, S31, S34, and S40 is when the indoor air temperature is 25°C, the indoor air humidity is 40%, the outdoor air temperature is 20°C, and the outdoor air humidity is 80%. can be

According to the determination result of step S34, the ventilator 1 is operated in the bypass mode in step S50. That is, indoor air is discharged to the outdoors, and outdoor air is introduced into the room without heat exchange with the indoor air. When operated in this way, indoor air with a large enthalpy (I _r ) is discharged to the outdoors, and outdoor air with a small enthalpy (I _o ) flows into the room. there is.

For example, the conditions for operation in the steps of S11, S31, S34, and S50 are, for example, when the indoor air temperature is 25°C, the indoor air humidity is 50%, the outdoor air temperature is 20°C, and the outdoor air humidity is 70%. can be

In addition, comparing the above two cases, whether to proceed to step S40 or step S50 is determined based on the enthalpy difference according to the humidity of indoor air and outdoor air based on the determination result of step S34. Therefore, a comfortable indoor environment can be created by operating the ventilator 1 in a mode suitable for indoor and outdoor conditions by comparing enthalpy in which indoor humidity is reflected.

As a result of comparing the indoor air temperature (T _ra ) with the heating reference temperature in step S31, if the indoor air temperature (T _ra ) is lower than the heating reference temperature, the process proceeds to step S32, and the indoor air enthalpy (I _r ) and outdoor air enthalpy (I _o ).

As a result of the enthalpy comparison, if the enthalpy of indoor air (I _r ) is greater than the enthalpy of outdoor air (I _o ), step S33 is performed, and otherwise, step S50 is performed.

When the indoor air temperature (T _ra ) is lower than the heating reference temperature and the enthalpy (I _r ) of the indoor air is greater than the enthalpy (I _o ) of the outdoor air in a state in which it is determined that heating is required, another heating device ( (not shown), it can be determined that indoor heating is currently being performed. Therefore, in the case of ventilation, energy consumption of the heating device can be reduced by enabling heat exchange between indoor air and outdoor air.

In step S33, the ventilator 1 is operated in a heat exchange mode. When operated as described above, indoor air having a large enthalpy (I _r ) is discharged to the outdoors, and outdoor air having a small enthalpy (I _o ) is introduced into the indoor space. do.

In this way, for example, the condition in which operation is performed in the steps of S11, S31, S32, and S33 is when the indoor air temperature is 14°C, the indoor air humidity is 50%, the outdoor air temperature is 10°C, and the outdoor air humidity is 40%. can be

According to the determination result of step S32, the ventilator 1 is operated in the bypass mode in step S50.

In step S31, when it is determined that the indoor air temperature (T _ra ) is lower than the heating reference temperature and requires heating, and the enthalpy (I _r ) of the indoor air is smaller than the enthalpy (I _o ) of the outdoor air, another It may be determined that the current indoor heating is not performed by a heating device (not shown).

Therefore, when operated in the bypass mode in step S50, indoor air having a small enthalpy (I _r ) is discharged to the outdoors, and outdoor air having a large enthalpy (I _o ) is introduced into the room, so outdoor air heating by outdoor air is performed based on enthalpy. this is done

For example, when the operation is performed in the steps of S11, S31, S32, and S50, the indoor air temperature is 14°C, the indoor air humidity is 30%, the outdoor air temperature is 10°C, and the outdoor air humidity is 70%. can be

As described above, the control unit 90 compares the indoor air temperature (T _ra ) with the outdoor air temperature (T _oa ) in step S11, and determines that the indoor air temperature (T _ra ) is the outdoor air temperature (T ra ). If it is lower than T _oa ), the enthalpy levels of the indoor air and outdoor air are compared, the bypass mode and the heat exchange mode are controlled to operate, and the temperature of the indoor air (T _ra ) is the temperature of the outdoor air (T ra ) _oa ), the enthalpy levels of the indoor air and outdoor air are compared, and the operation is controlled in either the bypass mode or the heat exchange mode. Therefore, during ventilation in the ventilator 1, it is possible to perform outdoor air cooling and outdoor air heating using outdoor air.

In addition, since the step of comparing the indoor air temperature and the heating reference temperature in step S31 is provided, the operation of the bypass mode and the heat exchange mode according to the enthalpy comparison in steps S32 and S34 are reversed.

That is, in step S32, when the enthalpy of indoor air (I _r ) is greater than the enthalpy of outdoor air (I _o ), the heat exchange mode is operated, and otherwise, the bypass mode is operated. On the other hand, in step S34, when the enthalpy of outdoor air (I _o ) is greater than the enthalpy of indoor air (I _r ), the heat exchange mode is operated, and otherwise, the bypass mode is operated. Therefore, energy consumption can be reduced according to various conditions of indoor air and outdoor air, and a more pleasant indoor environment can be realized.

When the ventilator 1 is operated by the above process, it is possible to cool and heat the room using outdoor air when ventilating the room, thereby reducing energy consumption. In addition, a bypass mode and total heat exchange mode can be selected to suit various conditions of indoor and outdoor temperature and humidity during ventilation, so that a comfortable indoor environment can be provided. In addition, since it is possible to determine whether the indoor space is currently being cooled or heated, a comfortable indoor environment can be provided by selecting a control mode suitable for each situation.

Referring to FIG. 5, the optimum control region will be described.

The optimal control region may be defined as an optimal indoor temperature range and indoor humidity range in which the user can feel comfortable.

The optimal control area may be stored in a storage unit (not shown) as table values for indoor temperature, indoor humidity, and enthalpy in the humidity chart.

That is, in FIG. 5 , the optimum control region may be represented as a certain region defined by a certain range of temperature and a certain range of humidity (relative humidity) in a humidity diagram composed of temperature, humidity, and enthalpy. For example, a case where the indoor temperature is 24 to 26° C. and the humidity is 40 to 60% may be set as the optimal control region.

When the current temperature and humidity conditions of the indoor space are located outside the optimal control range, the ventilator 1 may be operated to control the temperature and humidity conditions of the indoor space to be located within the optimum control range.

A method for controlling a ventilator according to another embodiment of the present invention will be described with reference to FIG. 6 .

In step S101, the comfort mode signal is received by the controller 90.

Here, the comfort mode means a mode in which the ventilator 1 is operated so that the indoor temperature and humidity are within the optimal control range shown in FIG. 5 .

The ventilator 1 may be provided with an input means for operating in the comfort mode, and may be configured to operate in the comfort mode when the user selects the comfort mode. can also be configured to operate.

When the comfort mode signal is received by the controller 90, the process proceeds to step S102.

In step S102, an air flow path is set.

The interior is composed of a plurality of indoor spaces such as a plurality of rooms and a living room. The exhaust blower 23 and the air supply blower 43 provided in the ventilator 1 have small air volumes, so that when all indoor spaces are ventilated at the same time, the effect of outdoor air cooling or outdoor air heating is reduced. Therefore, by concentrating ventilation only on a specific indoor space, the effect of outdoor air cooling or outdoor air heating can be increased.

To this end, passages through which the indoor air and outdoor air flow may be set so that the ventilation is performed only in some indoor spaces among the plurality of indoor spaces. The air passage setting may be configured by opening and closing a diffuser installed in each indoor space to introduce or discharge air into the indoor space, or an air supply duct for supplying air or an exhaust duct for discharging air to the outdoors. It is also possible to set whether or not to supply and exhaust air to each indoor space by providing one or more dampers and setting the opening and closing of the dampers.

In step S103, temperature information and humidity information of indoor air and outdoor air are received by the controller 90. Step S103 is performed in the same manner as step S10 described above.

In step S104, it is determined whether the current indoor temperature and indoor humidity are within the optimum control range.

As a result of the determination, if the current indoor temperature and indoor humidity are within the optimal control range, the process proceeds to step S105, and if not, the process proceeds to step S111.

In step S105, by operating the ventilator 1 in the heat exchange mode, heat exchange is performed between indoor air and outdoor air, so that the current state within the optimal control range can be maintained as much as possible.

When the current indoor temperature and indoor humidity are out of the optimal control range, steps after step S111 are performed.

Steps S121, S122, S123, S124, S131, S132, S133, S134, S140, and S150, which are steps after step S111, are steps S11, S21, S22, S23, S24, S31, S32, S33, and S34 described in FIG. , S40 and S50 are the same processes, so the description is omitted below.

When the ventilator 1 is operated in the bypass mode in step S150, it can be configured to control the supply air volume in step S160.

If the air volume of the outdoor air supplied by the air supply blower 43 is varied, the current indoor air can more quickly enter within the optimum control range.

When the ventilator 1 is operated by the above process, it is possible to selectively ventilate only some spaces among a plurality of indoor spaces, thereby maximizing the effect of outdoor air cooling and outdoor air heating. In addition, a comfortable indoor environment can be implemented by controlling the temperature and humidity of the current indoor space to fall within the optimal control range.

As described above, the present invention has been described in detail with preferred embodiments, but the present invention is not limited to the above-described embodiments, and various modifications are made within the scope of the claims and the detailed description of the invention and the accompanying drawings. It is possible to carry out by doing, and this also belongs to the present invention.

1: ventilation device 10: first exhaust room
11: indoor air inlet 12: damper
13: first temperature sensor 14: first humidity sensor
15: second temperature sensor 16: second humidity sensor
20: second exhaust chamber 21: indoor air outlet
23: exhaust blower 30: first air supply room
31: outdoor air inlet 40: second air room
41: outdoor air outlet 43: air supply blower
50: total heat exchanger 51: filter
60: diaphragm 70: bypass passage

Claims (16)

Indoor air is ventilated by operating in a heat exchange mode in which outdoor air flowing into the room and indoor air discharged to the outdoors exchange heat in the total heat exchanger, and in a bypass mode in which heat exchange is not performed between the outdoor air and indoor air in the total heat exchanger. In the control method of the ventilation device to
a) receiving temperature information and humidity information of indoor air and outdoor air by a controller;
b) comparing the temperature of the received indoor air and outdoor air in the control unit;
c) As a result of the comparison in step b), the control unit compares the enthalpy levels of the indoor air and the outdoor air when the temperature of the indoor air is lower and higher than that of the outdoor air, respectively, and exchanges heat with the bypass mode. Controlling to operate in one of the modes;
including,
Between step b) and step c), if the temperature of the indoor air is lower than the temperature of the outdoor air, a step of comparing the temperature of the indoor air with a cooling reference temperature for indoor cooling is further provided;
When the temperature of the indoor air is lower than the cooling reference temperature, the operation of the bypass mode and the heat exchange mode according to the comparison between the enthalpy levels of the indoor air and the outdoor air occurs when the temperature of the indoor air is higher than the cooling reference temperature. A control method of a ventilation device, characterized in that the operation of the bypass mode and the heat exchange mode are reversed according to the comparison of the enthalpy sizes of the indoor air and the outdoor air According to claim 1,
When the temperature of the indoor air is lower than the cooling reference temperature, the heat exchange mode is operated if the enthalpy of the indoor air is greater than the enthalpy of the outdoor air, and if the enthalpy of the indoor air is smaller than the enthalpy of the outdoor air, the By Control method of a ventilator, characterized in that operated in pass mode According to claim 1,
When the temperature of the indoor air is higher than the cooling reference temperature, and as a result of comparing the enthalpy levels of the indoor air and outdoor air, if the enthalpy of the indoor air is greater than the enthalpy of the outdoor air, the bypass mode is operated, and the indoor air is operated in the bypass mode. Control method of a ventilation device characterized in that the operation in the heat exchange mode when the enthalpy of the air is smaller than the enthalpy of the outdoor air Indoor air is ventilated by operating in a heat exchange mode in which outdoor air flowing into the room and indoor air discharged to the outdoors exchange heat in the total heat exchanger, and in a bypass mode in which heat exchange is not performed between the outdoor air and indoor air in the total heat exchanger. In the control method of the ventilation device to
a) receiving temperature information and humidity information of indoor air and outdoor air by a controller;
b) comparing the temperature of the received indoor air and outdoor air in the control unit;
c) As a result of the comparison in step b), the control unit compares the enthalpy levels of the indoor air and the outdoor air when the temperature of the indoor air is lower and higher than that of the outdoor air, respectively, and exchanges heat with the bypass mode. Controlling to operate in one of the modes;
including,
Between the steps b) and c), when the temperature of the indoor air is higher than the temperature of the outdoor air, a step of comparing the temperature of the indoor air with a heating reference temperature for indoor heating is further provided;
When the temperature of the indoor air is lower than the heating reference temperature, the operation of the bypass mode and the heat exchange mode according to the comparison between the enthalpy levels of the indoor air and the outdoor air occurs when the temperature of the indoor air is higher than the heating reference temperature. A control method of a ventilation device, characterized in that the operation of the bypass mode and the heat exchange mode are reversed according to the comparison of the enthalpy sizes of the indoor air and the outdoor air According to claim 4,
When the temperature of the indoor air is higher than the heating reference temperature, the bypass mode is operated if the enthalpy of the indoor air is greater than the enthalpy of the outdoor air, and the enthalpy of the indoor air is lower than the enthalpy of the outdoor air. Control method of a ventilator characterized in that it is operated in a heat exchange mode According to claim 4,
When the temperature of the indoor air is lower than the heating reference temperature, the heat exchange mode is operated if the enthalpy of the indoor air is greater than the enthalpy of the outdoor air, and if the enthalpy of the indoor air is smaller than the enthalpy of the outdoor air, the By Control method of a ventilator, characterized in that operated in pass mode Indoor air is ventilated by operating in a heat exchange mode in which outdoor air flowing into the room and indoor air discharged to the outdoors exchange heat in the total heat exchanger, and in a bypass mode in which heat exchange is not performed between the outdoor air and indoor air in the total heat exchanger. In the control method of the ventilation device to
a) receiving temperature information and humidity information of indoor air and outdoor air by a controller;
b) comparing the temperature of the received indoor air and outdoor air in the control unit;
c) As a result of the comparison in step b), the control unit compares the enthalpy levels of the indoor air and the outdoor air when the temperature of the indoor air is lower and higher than that of the outdoor air, respectively, and exchanges heat with the bypass mode. Controlling to operate in one of the modes;
including,
An optimal control area defined by the temperature of the certain range and the humidity of the certain range is set,
The control unit determines whether the current temperature and humidity of the indoor space are out of the range of the optimum control region, and if the temperature and humidity of the indoor space are out of the range of the optimum control region, the temperature and humidity of the indoor space fall within the range of the optimum control region. Control method of a ventilation device characterized in that the operation in the heat exchange mode or bypass mode The method of any one of claims 1, 4, and 7,
The temperature information and humidity information of the indoor air are received from a temperature sensor and a humidity sensor;
The temperature information and the humidity information of the outdoor air are received from a temperature sensor and a humidity sensor or received from an external server. The method of any one of claims 1, 4, and 7,
The control method of a ventilation apparatus according to claim 1 , wherein the indoor space is composed of a plurality of indoor spaces, and a flow path through which the indoor air and outdoor air flow is set so that the ventilation is performed only in some indoor spaces among the plurality of indoor spaces. According to claim 7,
A control method of a ventilation device, characterized in that by varying the air volume of outdoor air supplied to the indoor space so that the temperature and humidity of the indoor space fall within the optimal control range. According to claim 7,
The control unit determines whether the temperature and humidity of the current indoor space are out of the range of the optimum control range, and operates in the heat exchange mode when located within the optimum control range. Indoor air is ventilated by operating in a heat exchange mode in which outdoor air flowing into the room and indoor air discharged to the outdoors exchange heat in the total heat exchanger, and in a bypass mode in which heat exchange is not performed between the outdoor air and indoor air in the total heat exchanger. In the ventilation system,
The temperature information and humidity information of the indoor air and outdoor air are received, the received indoor air and outdoor air temperatures are compared, and a case where the indoor air temperature is lower than the outdoor air temperature and the indoor air temperature is outdoor A controller comparing the enthalpy levels of the indoor air and the outdoor air when the temperature is higher than that of the air, and controlling the operation in one of the bypass mode and the heat exchange mode;
The controller compares the temperature of the indoor air with a cooling reference temperature for indoor cooling when the temperature of the indoor air is lower than the temperature of the outdoor air, and when the temperature of the indoor air is lower than the cooling reference temperature, The operation of the bypass mode and the heat exchange mode according to the comparison of the enthalpy levels of the indoor air and the outdoor air is performed according to the comparison of the enthalpy sizes of the indoor air and the outdoor air when the temperature of the indoor air is higher than the cooling reference temperature. Ventilator characterized by controlling the operation of the bypass mode and the heat exchange mode so that they are reversed Indoor air is ventilated by operating in a heat exchange mode in which outdoor air flowing into the room and indoor air discharged to the outdoors exchange heat in the total heat exchanger, and in a bypass mode in which heat exchange is not performed between the outdoor air and indoor air in the total heat exchanger. In the ventilation system,
The temperature information and humidity information of the indoor air and outdoor air are received, the received indoor air and outdoor air temperatures are compared, and a case where the indoor air temperature is lower than the outdoor air temperature and the indoor air temperature is outdoor A controller comparing the enthalpy levels of the indoor air and the outdoor air when the temperature is higher than that of the air, and controlling the operation in one of the bypass mode and the heat exchange mode;
The controller compares the temperature of the indoor air with a heating reference temperature for indoor heating when the temperature of the indoor air is higher than the temperature of the outdoor air, and when the temperature of the indoor air is lower than the heating reference temperature, The operation of the bypass mode and the heat exchange mode according to the comparison between the enthalpy levels of the indoor air and the outdoor air is performed according to the comparison between the enthalpy levels of the indoor air and the outdoor air when the temperature of the indoor air is higher than the heating reference temperature. Ventilator characterized by controlling the operation of the bypass mode and the heat exchange mode so that they are reversed Indoor air is ventilated by operating in a heat exchange mode in which outdoor air flowing into the room and indoor air discharged to the outdoors exchange heat in the total heat exchanger, and in a bypass mode in which heat exchange is not performed between the outdoor air and indoor air in the total heat exchanger. In the ventilation system,
The temperature information and humidity information of the indoor air and outdoor air are received, the received indoor air and outdoor air temperatures are compared, and a case where the indoor air temperature is lower than the outdoor air temperature and the indoor air temperature is outdoor A controller comparing the enthalpy levels of the indoor air and the outdoor air when the temperature is higher than that of the air, and controlling the operation in one of the bypass mode and the heat exchange mode;
a storage unit for storing an optimum control region defined by a certain range of temperature and a certain range of humidity;
The control unit controls to operate in the bypass mode or heat exchange mode so that the temperature and humidity of the indoor air are out of the optimal control region so as to fall within the optimal control region. According to any one of claims 12, 13, and 14,
and a first temperature sensor and a first humidity sensor that sense the temperature and humidity of the indoor air and provide the temperature and humidity information of the indoor air to the control unit. According to any one of claims 12, 13, and 14,
The temperature information and humidity information of the outdoor air are received from the second temperature sensor and the second humidity sensor or received from an external server.

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