KR20100128811A - Ventilating device and controlling method of the same - Google Patents

Abstract

PURPOSE: A ventilation system and a control method thereof are provided to make indoor air fresh by supplying moisture to dry air which flows in rooms. CONSTITUTION: A ventilation system comprises a ventilation unit, a humidifying unit, and a water supply unit. The ventilation unit comprises a heat exchanger. The heat exchanger exchanges heat between exhaust air and intake air. The humidifying unit comprises a water container and a humidification member. The water supply unit comprises a water supply pipe(360), a water supply valve(362), and a heater(364). The water supply pipe supplies water to the water container of the humidifying unit. The water supply valve is installed in the water supply pipe.

Description

VENTILATING DEVICE AND CONTROLLING METHOD OF THE SAME}

The present invention relates to a ventilator having a humidifying unit capable of preventing freezing and a control method thereof.

The present invention relates to a ventilator and a control method thereof. More specifically, the present invention relates to a ventilator having a humidifying unit capable of preventing freezing and a control method thereof.

In general, the ventilator is a device for discharging indoor polluted air and sucking and supplying fresh and clean air to the room. An air conditioner without a ventilation function circulates indoor air and cools or heats the room to cool or heat the room. In some cases, the air conditioner is provided with a filter or the like, but the pollution level of the room is gradually increased, and the air cleaning function by the filter is limited, so that the ventilation process of the indoor air is required.

Therefore, a separate ventilation device is often provided even when an air conditioner for circulating indoor air and cooling the room is installed.

In addition, in order to minimize heat loss in the process of ventilating the air-conditioned indoor air and outdoor air, the ventilation device is provided with a heat exchanger that performs heat exchange between the intake air sucked outdoors and the exhaust air discharged outdoors. The heat loss that can be generated can be minimized.

In addition, by providing a humidifying function to provide a humidifying function to the ventilation device, it is possible to humidify the intake air supplied to the room.

The humidifying unit includes a humidifying member for absorbing water, and may use a method of allowing the suction air sucked outdoors to pass between the humidifying members so that the water particles are supplied to the room together with the suction air.

The water supplied to the humidification unit can be supplied directly through the tap water, the temperature of the water supplied through the tap water in winter can be lowered below the freezing point of water, so when the winter freeze can not perform the humidification function normally, A water tank or a humidifying member that absorbs water may cause various problems, such as overflowing water when freezing.

The present invention is to solve the problem to be provided by a ventilation device and a control method provided with a humidification unit that can prevent freeze.

In order to solve the above problems, the present invention provides a ventilation unit having a heat exchanger for exchanging heat discharged from the room and the suction air sucked into the room, a water supply tank for storing the water supplied, absorbs the water stored in the water supply tank A humidifying unit having a humidifying member for humidifying the suction air supplied from the ventilation unit, and a water supply pipe for supplying water to a water supply tank of the humidification unit, a water supply valve installed in the water supply pipe, and the water supply pipe. It provides a ventilation device comprising; a water supply unit including a heater for selectively heating the water or the water supply pipe to be supplied.

In this case, the water supply unit may further include a temperature sensor for measuring the temperature of the water supplied through the water supply pipe.

In addition, when the temperature of the water supplied through the water supply pipe is between a predetermined first temperature and a second temperature lower than the first temperature, the heater may be operated.

In addition, when the temperature of the water supplied through the water supply pipe is lower than the second temperature, the water supply valve may be shut off.

Here, the heater may be operated for a certain time.

In addition, in order to solve the above problems, the present invention is a ventilation step of ventilating indoor air by operating a ventilation unit including an exhaust fan and an intake fan; A humidifying step of operating a humidifying unit including a humidifying member which absorbs water stored in the water supply tank and the water storage tank in a specific section while the ventilation step is performed, penetrates the suction air, and humidifies the humidifying member; A water temperature measuring step of measuring the water temperature of the water supplied to the humidifying unit; And a water supply unit control step of controlling a water supply unit having a water supply valve and a heater according to the temperature measured in the water temperature measurement step.

In this case, the water supply unit control step may operate the heater or cut off the water supply valve according to the temperature measured in the water temperature measurement step.

Here, when the temperature measured in the water temperature measuring step is between a predetermined first temperature and a second temperature lower than the first temperature, the heater may be operated for a predetermined time.

According to the ventilator equipped with a humidification unit according to the present invention and a control method thereof, the indoor air can be comfortably provided by ventilating the indoor air and supplying moisture to the dry air flowing into the room.

In addition, according to the ventilation device and a control method provided with a humidification unit according to the present invention, by heating the water supplied to the humidification unit it is possible to prevent freezes that may occur in the winter.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention is not limited to the embodiments described herein but may be embodied in other forms. Rather, the embodiments introduced herein are provided so that the disclosure may be made thorough and complete, and to fully convey the spirit of the present invention to those skilled in the art. Like numbers refer to like elements throughout.

1 is a perspective view of a ventilation device 1000 according to the present invention.

The ventilation device 1000 includes a ventilation unit for ventilating indoor air and outdoor air. In addition, the ventilation apparatus may further include at least one of a heating and cooling unit for heating or cooling the suction air sucked in the ventilation unit and a humidifying unit for humidifying the suction air sucked in the ventilation unit. The air-conditioning unit and the humidifying unit may improve the comfort of the intake air supplied to the room together with the ventilation unit, thereby increasing user satisfaction.

The ventilator shown in FIG. 1 will be described in detail below. The ventilation device will be described on the assumption that the ventilation unit includes both the above-described heating and cooling unit and a humidification unit.

Ventilation unit in charge of the ventilation function of the ventilation device may be provided with at least one blowing fan. In the embodiment shown in Figure 1, the ventilation unit 100 of the ventilation device has an intake fan 130 and the exhaust fan 120. The intake fan 130 and the exhaust fan 120 suck the outdoor air and discharge the indoor air. The intake fan 130 and the exhaust fan 120 may be located at both ends of the ventilation unit 110, respectively. The intake fan 130 may be provided at one end of an indoor direction of the ventilation unit 110, and the exhaust fan 120 may be provided at an end of an outdoor direction of the ventilation unit 110.

A heat exchanger 110 may be provided to exchange heat between the air sucked between the intake fan 130 and the exhaust fan 120 and the exhaust air. The heat exchanger 110 heat exchanges the sucked air with the exhaust air, thereby preventing a sudden temperature change of the indoor air and lowering the air conditioning load of the indoor space.

For example, when the ventilation process is performed in the indoor cooling process, the cooled air in the room is discharged, the hot outdoor air is sucked in, and the cooling load (air load) of the air conditioner or the like is increased.

Therefore, the suction air and the discharged air discharged from the heat exchanger 110 exchange heat with each other, thereby reducing the cooling load or the heating load and minimizing the temperature deviation felt by the user. The detailed structure of the heat exchanger 110 will be described in detail later.

The intake fan 130 and the exhaust fan 120 may be configured as a cross flow fan, and the heat exchanger 110 may be disposed between the intake fan 130 and the exhaust fan 120.

The intake fan 130 blows the outdoor air (intake air) that has passed through the heat exchanger 110 to the cooling and heating unit 200, which will be described later, and the exhaust fan 120 passes through the heat exchanger 110. Serves to discharge air (emission air) to the outside,

The intake air sucked from the intake fan 130 may be blown to the cooling and heating unit 200. The cooling and heating unit 200 includes a cooling and heating coil 210 for cooling or heating the intake air through which the refrigerant is evaporated or condensed and permeated, and an expansion valve (not shown) capable of selectively blocking or expanding the refrigerant.

The refrigerant supplied to the air conditioning heating coil may be supplied from an outdoor unit of the air conditioner provided separately from the ventilation device.

Of course, it is also possible to include a compressor and a heat exchanger inside the ventilator, but to reduce the volume of the ventilator, minimize noise generation, and to increase the cooling and heating efficiency, the refrigerant may be supplied from the outdoor unit of the air conditioner installed outdoors. . A description of the air conditioning heating coil constituting the air conditioning unit 200 will be described in detail later.

The ventilation device may further include a humidifying unit 300 at the rear of the cooling and heating unit 200. The humidifying unit 300 may include a humidifying member that absorbs and flows water, and humidifies the air that is permeated by passing air. Detailed description thereof will be described later.

FIG. 2 is a perspective view of the ventilator illustrated in FIG. 1 from another angle. The ventilation device sucks or discharges indoor air through an intake port (not shown) for sucking indoor air into the room and a discharge hole (not shown) through which the indoor air is derived.

The process of inhaling indoor air and exhausting it through the ventilator is performed by first and second exhaust ducts 430 and 440 respectively connected to the ventilator, and the process of inhaling outdoor air and inhaling the ventilator through the ventilator is the ventilator. By the first and second intake ducts 410 and 420, respectively.

The suction air OA sucked through the first intake duct 410 is heat-exchanged in the heat exchanger of the suction unit 100, and then cooled or heated in the air-conditioning coil 210 constituting the air-conditioning unit 200. And, humidified in the humidifying unit 300 is supplied to the room (SA).

In particular, the humidifying unit 300 may comfortably indoors by decreasing the temperature and increasing the humidity while the suction air heated in the air-conditioning unit 200 is transmitted in winter. That is, the air heated in the air conditioning unit 200 is easily humidified in the humidifying unit. Therefore, the humidifying unit 300 has a greater meaning in lowering the temperature of the air heated and dried in the heating mode and increasing the humidity.

On the other hand, the indoor air (RA) sucked indoors bypasses the humidifying unit 300 or the cooling and heating unit 200 without passing through the heat exchanger 110 of the ventilation unit 100, and then discharges it to the outside. (EA).

Figure 3 shows a heat exchanger 110 of the ventilation unit 100 of the ventilation device and the heating and cooling coil 210 of the air conditioning unit 200. Figure 3 (a) shows a heat exchanger 110 of the ventilation unit 100, Figure 3 (b) shows a heating and cooling coil 210 of the air conditioning unit 200.

As shown in FIG. 3 (a), the heat exchanger 110 may be configured by alternately stacking a flat plate material 113 and a wave-shaped bent plate material 114. The bent plate member 114 disposed with the flat plate member 113 interposed therebetween may be configured to intersect at a right angle. The heat exchanger 110 may be formed in a quadrangular pillar shape as a whole.

The heat exchanger 110 has a first flow path 115 and a second flow path 116 formed by stacking the flat plate material 113 and the bent plate material 114. The first passage 115 and the second passage 116 are orthogonal to each other.

An adsorbent for adsorbing water vapor may be applied to the surface of the flat plate member 113 or the surface of the bent plate member 114 constituting the heat exchanger 110. Examples of such an adsorbent include silica gel, Zeolite, ion exchange resin and the like.

In addition, the surface of the flat plate member 113 constituting the heat exchanger 110 or the bent plate member 114 is coated with an adsorbent on the surface thereof and is made of a thin film material or the like, so that the first flow path 115 and the second The air passing through each of the flow paths 116 may also exchange moisture with heat exchange.

That is, when the discharge air RA supplied from the inside flows into the first passage 115 and the suction air OA sucked from the outside flows into the second passage 116, the first passage 115 flows. Moisture is adsorbed by the adsorbent and supplies water to the intake air OA of the second flow path 116 to increase the humidity of the intake air OA. When the humidification unit 300 is provided in the ventilation device, the humidification process by the humidification unit 300 may be performed, but even when the humidification unit is not provided, the humidity of the intake air (OA) and the exhaust air (RA). The car can be reduced first.

3 (b) is a perspective view of the air conditioning coil 210 constituting the air conditioning unit 200. The air-conditioning coil 210 may be composed of a cross-fin Fin-Tube type heat exchanger. The heating / cooling coil 210 may include a plurality of fins 213 made of a metal material such as aluminum formed in a rectangular plate shape, and a refrigerant pipe 215 penetrating the fins 213. In addition, although not shown in Figure 3, an expansion valve (not shown) for selectively supplying the refrigerant to the cooling and heating coil 210 may be provided. The expansion valve may be an electric expansion valve (EEV). The expansion valve may serve to selectively block or supply the refrigerant or expand the refrigerant introduced into the cooling / heating coil 210.

Therefore, when cooling the room, the cooling and heating coil 210 is operated as an evaporator, when heating the room, the cooling and heating coil 210 may be operated as a condenser.

Since the ventilation device alone may be difficult to provide sufficient cooling and heating functions, the ventilation device may be operated in conjunction with a separate air conditioner. When the compressor is not provided inside the ventilation device, the refrigerant may be supplied from the outdoor unit of the air conditioner. have.

Figure 4 shows one embodiment of the humidifying member of the ventilator according to the present invention. Specifically, Figure 4 (a) is a perspective view of the humidifying members (310, 310 ') having a bent portion at the top, Figure 4 (b) shows a perspective view of a rectangular parallelepiped shape.

The humidifying member illustrated in FIG. 4 may absorb the water, and the humidifying process may be performed by passing suction air between the humidifying members absorbing the water.

The humidifying member 310 may be configured in a form in which a plurality of absorbent materials 315 and 315 'are stacked side by side. The moisture absorbents 315 and 315 'are made of a material such as a nonwoven fabric or paper, and the water absorbed by the humidifying members 310 and 310' is caused by water flowing down the surface of the moisture absorbents 315 and 315 '. Absorbed inside and moved to the bottom.

In addition, it may have a bent portion (not shown) bent after extending on the upper portion of the humidifying member, the bent portion may have a shape extending downward.

As shown in FIG. 4, the humidifying members 310 and 310 ′ continuously absorb and flow water, and simultaneously permeate air to humidify the intake air.

However, in winter, since water supplied to the humidifying members 310 and 310 'may be cooled, a method for solving the problem is required.

Figure 5 shows the configuration of the humidifying unit and the water supply unit of the ventilator according to the present invention.

For convenience of description, the humidification member shown in FIG. 4 (a) will be described. The bent portion 312 of the upper portion of the humidifying member 310 extends to the water supply tank 320 provided at the lower portion thereof to absorb the water stored in the water supply tank 320. The water supplied into the water container 320 is by the water supply unit 36 connected to the humidifying unit and the water supply pipe 360.

The water level of the water stored in the water tank 320 is measured by the water level sensor 322, for example, a float switch. The water stored in the water supply tank is supplied from a water supply pipe 360 for supplying water to the water supply tank 320, and a water supply valve 362 may be provided to selectively block water supply to the water supply pipe. The water supply valve 360 is selectively opened and closed by the control unit 600 of the ventilator according to the water level measured by the water level sensor 322.

In addition, the water supply pipe 360 may be provided with a heater 364 and a water temperature sensor 366.

When the temperature of the water measured by the water temperature sensor 366 falls below a predetermined temperature, the heater 364 may heat the water supplied to the water supply pipe 360 or the inside thereof.

The heater 364 may be an induction heater. The induction heater is a heater using an induction current generated by a magnetic field as a heat source. If the metal is placed on the heater, the eddy current is generated in the metal by the electromagnetic induction phenomenon and the metal is heated by the joule heat. It can produce strong heat instantaneously, but it must be equipped with a metal container to heat it.

6 is a block diagram of a control method of a ventilation device according to the present invention. The control method of the ventilation device according to the present invention is based on the premise that the humidifying unit 300 humidifies the suction air in the process of ventilating the room by the ventilation unit 100.

Therefore, the control method according to the present invention includes a ventilation step of ventilating the room by operating the ventilation unit 100 (S100). In order to activate the humidification function while the ventilation step is performed, a water supply step in which the water supply unit 36 supplies water (S200) is performed.

The water supply step is a step of selectively supplying water to the water supply tank 320 using the water supply unit 36.

When the water supply step is started, a first temperature measuring step (S300) of measuring the temperature of the supplied water or the supply pipe is performed. The temperature measuring step (S300) is a heater for operating the heater when the temperature of the water or the supply pipe supplied from the water supply pipe 360 is lower than the predetermined first temperature (t1) and higher than the predetermined second temperature (t2) Operation step S400 is performed. The heater operated in the heater operation step S400 may heat the water supplied to the water supply pipe 360 or the inside thereof, thereby preventing freezing.

The first temperature may be, for example, a temperature near a freezing point of water, and the second temperature t2 is lower than the first temperature t1, so that the humidification process is performed even if the first temperature is supplied to the humidification member without being frozen. It can be a temperature that can be easily frozen in the. It means the temperature of the extreme situation where it can't freeze while flowing down to the outdoor temperature.

When the temperature of the water supplied to the water supply tank 320 is a temperature between the first temperature t1 and the second temperature t2, when the water is heated using the heater 364 or the like, the water is freed in the water supply process. Although it can be prevented to some extent, the flowing water cooled below the second temperature (t2) is a temperature that can easily freeze inside the ventilator and damage the product even when heated by the heater 364, thus stopping the humidification operation. It is desirable to.

The heater operation step (S400) to operate the heater 364 is heated for a predetermined time (S500).

If the temperature measured in the first temperature measuring step S300 is not a temperature between the second predetermined temperature and the first temperature, the second temperature determining method determines whether the measured temperature is smaller than the second temperature t2. 2 temperature measurement step (S320) can be measured. When the temperature of the water is too low, even if heated by the heater it means that the temperature is enough to freeze when absorbed by the humidifying member.

If only the temperature measured in the second temperature determination step (S320) is lower than the second temperature (t2), it is preferable to stop the operation of the water supply unit (blocking the water supply valve).

Although the present specification has been described with reference to preferred embodiments of the invention, those skilled in the art may variously modify and modify the invention without departing from the spirit and scope of the invention as set forth in the claims set forth below. Changes may be made. It is therefore to be understood that the modified embodiments are included in the technical scope of the present invention if they basically include elements of the claims of the present invention.

1 is a perspective view of a ventilation device according to the present invention.

FIG. 2 is a perspective view of the ventilator illustrated in FIG. 1 from another angle.

Figure 3 shows a heating and cooling coil 210 of the heat exchanger and air conditioning unit of the ventilation unit of the ventilator.

Figure 4 shows one embodiment of the humidifying member of the ventilator according to the present invention.

Figure 5 shows the configuration of the humidifying unit and the water supply unit of the ventilator according to the present invention.

6 is a block diagram of a control method of a ventilation device according to the present invention.

** Description of symbols for the main parts of the drawing **

100: ventilation unit

200: air conditioning unit

300: humidification unit

322: water level sensor

360: water supply pipe

362: water supply valve

364: heater

366: water temperature sensor

Claims (8)

A ventilation unit having a heat exchanger for heat-exchanging exhaust air discharged from the room and suction air sucked into the room; A humidifying unit having a water supply tank for storing the supplied water, and a humidifying member for absorbing the water stored in the water supply tank and permeating the suction air supplied from the ventilation unit; And, A water supply unit including a water supply pipe for supplying water to the water supply tank of the humidification unit, a water supply valve installed in the water supply pipe, and a heater for selectively heating the water or the water supply pipe supplied to the water supply pipe. . The method of claim 1, The water supply unit further comprises a temperature sensor for measuring the temperature of the water supplied through the water supply pipe. The method of claim 2, And the heater is operated when the temperature of the water supplied through the water supply pipe is between a first predetermined temperature and a second temperature lower than the first temperature. The method of claim 3, The heater is characterized in that the operation for a certain time. The method of claim 3, And when the temperature of the water supplied through the water supply pipe is lower than the second temperature, the water supply valve is blocked. A ventilation step of ventilating indoor air by operating a ventilation unit including an exhaust fan and an intake fan; A humidifying step of operating a humidifying unit including a humidifying member which absorbs water stored in the water supply tank and water stored in the water supply tank, and a humidifying member for humidifying and humidifying the water during the ventilation step; A water temperature measuring step of measuring the water temperature of the water supplied to the humidifying unit; And, And a water supply unit control step of controlling a water supply unit having a water supply valve and a heater according to the temperature measured in the water temperature measurement step. The method of claim 6, The control method of the water supply unit, the method of controlling the ventilation device, characterized in that for operating the heater or cut off the water supply valve according to the temperature measured in the water temperature measurement step. The method of claim 7, wherein And operating the heater for a predetermined time when the temperature measured in the water temperature measuring step is between a predetermined first temperature and a second temperature lower than the first temperature.

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