KR101565249B1 - Heating-cooling and ventilating concurrent controller - Google Patents

Abstract

The present invention relates to a cooling, heating, and ventilating concurrent control device. According to an embodiment of the present invention, the cooling, heating, and ventilating concurrent control device comprises: an air suction unit sucking air through an indoor inlet or an outdoor inlet; an air change unit changing a flow of external air sucked through the outdoor inlet and internal air sucked through the indoor inlet in accordance to a predetermined air conditioning condition; a total heat exchange unit exchanging a total heat between the internal air and the external air using a bypass damper in accordance to a predetermined air conditioning condition and an indoor load change; a heat source generation unit controlling a quantity of generated heat by controlling a refrigerant flow rate of an evaporator, a condenser, and a fan blowing rate in accordance to the indoor load change; an air discharge unit discharging air through an indoor outlet or an outdoor outlet by being engaged with the air suction unit in accordance to the indoor load change; a detecting unit detecting information about an indoor and outdoor environment; and a control unit controlling the air suction unit, the air change unit, the total heat exchange unit, the heat source generation unit, the air discharge unit, and the detecting unit. As such, the cooling, heating, and ventilating concurrent control device controls an indoor cooling, heating, and ventilation at the same time in accordance to the air conditioning condition. Also, the cooling, heating and ventilating concurrent control device controls ventilation in accordance to an air pollution level of the external air.

Description

[0001] HEATING-COOLING AND VENTILATING CONCURRENT CONTROLLER [0002]

The present invention relates to an air conditioning and ventilation simultaneous control device, and more particularly, to a technology for simultaneously controlling air conditioning and ventilation in accordance with air conditioning conditions and an indoor load variation.

Generally, a ventilation unit is a unit for forcedly introducing indoor or outdoor air into the outdoor or indoor side. The ventilation unit is mainly used for schools, hospitals, kitchens, office buildings, subway history, underground shopping malls, The air conditioner, the clean room, and the like for the purpose of ventilating the multi-use facility, which is used by a large number of people, such as an airport facility, a library, a museum, a steam room, a PC room and an office.

Korean Patent Registration No. 10-0675771 (registered on June 23, 2007) discloses a ventilation unit having a bypass means and an air purifying means. In spring and autumn, hot indoor air is directly discharged And a ventilation unit provided with bypass means for bypassing the total heat exchange member so as to supply cool outside air and further including an air purification means using an ultraviolet lamp and a metal hydrate catalyst.

However, in the case of the above-mentioned ventilation unit, there is a limit in that ventilation can not be performed together with air-conditioning and heating in a time when air-conditioning and heating are required, such as summer or winter.

An object of the present invention is to provide a cooling / heating / ventilation simultaneous control device for controlling the cooling / heating according to the air condition and ventilating the indoor / outdoor air.

The air conditioning and ventilation simultaneous control apparatus according to an embodiment of the present invention includes an air suction unit for sucking air through an indoor suction port or an outdoor suction port, a flow of air sucked through the indoor suction port and an outdoor air sucked through the outdoor suction port An air heat exchanger for performing total heat exchange between the inside air and the outside air by using a bypass damper in accordance with a predetermined air conditioning condition and an indoor load variation; A heat source generating unit for controlling a flow rate of the refrigerant and a fan blowing amount of the evaporator and the condenser to regulate the calorific value of the heat generated by the evaporator and the condenser and an air discharging unit for discharging air through the indoor air outlet or the outdoor air outlet in cooperation with the air suction unit, A sensing unit for sensing indoor and outdoor environmental information, and a control unit for controlling the air suction unit, the air switching unit, And a controller for controlling the heat source, the air discharge unit, and the sensing unit.

When the air conditioning condition is a cooling operation, the control unit switches the inside air to a first path connected to the evaporator in the air switching unit, and switches the outside air to a second path connected to the condenser, The bypass passage is cut off by using the bypass damper in the exchange portion to perform total heat exchange between the inside air and the outside air,
The total heat exchanged outside air is supplied to the evaporator, the temperature of which is lowered by the heat absorbed by the evaporator, so that the cold air becomes cold air and is supplied to the room through the room vent,
Wherein the heat source generating unit senses the temperature of the heat exchanged air supplied to the evaporator and the condenser to control the flow rate of the refrigerant and the amount of the fan air to reach a predetermined temperature, The indoor air outlet is connected to a third path connected to the evaporator, and the outdoor air outlet is connected to a fourth path connected to the condenser, .

When the air conditioning condition is a heating operation, the control unit switches the outside air to a first path connected to the evaporator in the air switching unit, and switches the inside air to a second path connected to the condenser, The bypass passage is cut off by using the bypass damper in the exchange portion to perform total heat exchange between the inside air and the outside air,
The outdoor heat exchanger is supplied to the condenser, and the temperature of the outdoor heat exchanger is increased by the amount of heat radiated from the condenser. As a result, the hot air becomes hot and is supplied to the room through the room outlet,
Wherein the heat source generating unit senses the temperature of the heat exchanged air supplied to the evaporator and the condenser to control the flow rate of the refrigerant and the amount of the fan air to reach a predetermined temperature, The outdoor air outlet is connected to a third path connected to the evaporator and the indoor air outlet is connected to a fourth path connected to the condenser, .

When the air conditioning condition is the outdoor air cooling operation, the control unit switches the outside air to a first path connected to the evaporator in the air switching unit, and switches the inside air to a second path connected to the condenser, The bypass path is opened by using the bypass damper in the total heat-exchanging portion to block the total heat exchange between the inside air and the outside air, and the temperature of the outside air supplied to the evaporator and the inside air supplied to the condenser in the heat source- And controls the fan blowing amount so as to reach a preset temperature. When the predetermined temperature is reached, the refrigerant flow is cut off and the fan blowing amount is maintained to be ventilated, Is connected to a third path connected to the evaporator, and the outdoor outlet is connected to the condenser The first may be connected to the four paths.

When the air conditioning condition is the defrosting operation, the control unit switches the inside air to a first path connected to the evaporator in the air switching unit, and switches the outside air to a second path connected to the condenser, The bypass unit opens the bypass path by using the bypass damper to block the total heat exchange between the inside air and the outside air to cause the inside air to flow into the evaporator from the heat source generating unit, So that the fan blowing amount can be controlled.

The air conditioner may further include a pollution degree detector for analyzing the weather forecast of the predetermined range to determine whether the average air pollution level of the outdoor air exceeds a preset reference pollution degree, , The air switching unit switches the inside air to a first path connected to the evaporator, and switches the outside air to a second path connected to the condenser, and in the total heat exchanging unit, the bypass path So that the indoor discharge port is connected to the third path connected to the evaporator and the outdoor discharge port is connected to the fourth path connected to the condenser, If the average air pollution level of the outside air exceeds the standard value, So can.

Accordingly, indoor air conditioning and ventilation can be controlled simultaneously according to air conditioning conditions. In addition, the ventilation can be controlled according to the air pollution degree of outdoor air.

1 is a configuration diagram of a cooling / heating and ventilation simultaneous control apparatus according to an embodiment of the present invention,
FIG. 2 is a detailed configuration diagram for explaining the operation of the cooling / heating and ventilation simultaneous control device according to FIG. 1 when the air conditioning condition is a cooling operation;
FIG. 3 is a detailed configuration diagram for explaining the operation of the air conditioning and ventilation simultaneous control device according to FIG. 1 when the air conditioning condition is a heating operation;
FIG. 4 is a detailed configuration diagram for explaining the operation of the air conditioning and ventilation simultaneous control apparatus according to FIG. 1 when the air conditioning condition is the outdoor air cooling operation;
FIG. 5 is a detailed configuration diagram for explaining the operation in the air conditioning and ventilation simultaneous control device according to FIG. 1 when the air conditioning condition is the defrosting operation.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. The terms used are terms selected in consideration of the functions in the embodiments, and the meaning of the terms may vary depending on the user, the intention or the precedent of the operator, and the like. Therefore, the meaning of the terms used in the following embodiments is defined according to the definition when specifically defined in this specification, and unless otherwise defined, it should be interpreted in a sense generally recognized by those skilled in the art.

1 is a block diagram of an apparatus for simultaneously controlling cooling and heating and ventilation according to an embodiment of the present invention.

Referring to FIG. 1, an air conditioning and ventilation control system 100 according to an embodiment of the present invention includes an air intake unit 110, an air switching unit 120, a total heat exchanging unit 130, a heat source generating unit 140, An air discharge unit 150, a sensing unit 160, and a control unit 170.

The air suction unit 110 sucks air through an indoor suction port installed in a room or an outdoor suction port installed outside the room. The air suction unit 110 adjusts the suction amount of the air in conjunction with the air discharge unit 150 according to the variation of the indoor load. The air suction unit 110 may adjust the suction amount of the indoor suction port or adjust the suction amount of the outdoor suction port, but is not limited thereto. That is, the control unit 170, which will be described later, controls the suction amount of the indoor suction port, and the outdoor suction port can suck only the suction amount of the predetermined condition.

The air switching unit 120 switches the flow of the outside air sucked through the indoor air inlet and the outdoor air inlet through the indoor air inlet of the air inlet unit 110 according to predetermined air conditioning conditions. In this case, the air conditioning condition may include cooling operation, heating operation, outdoor cooling operation, defrost operation, and the like. The air switching unit 120 serves to move the indoor air or the outside air to a path connected to an evaporator or a condenser of a heat source generating unit 140 described later. In this case, the air suction unit 110 can change the flow of the indoor air or the outside air by using a motor (not shown).

The total heat-exchanging part 130 is connected to the air switching part 120 to perform total heat exchange between the inside air and the outside air by using the bypass damper according to the predetermined air conditioning condition and the indoor load variation. The total heat-exchanging portion 130 determines whether heat exchange is performed between the indoor air and the outdoor air, and is controlled by a control portion 170 described later. For example, in the case of cooling operation or heating operation during the air conditioning condition, the total heat exchange can be performed, and in the case of the outdoor cooling operation or the defrost operation, the total heat exchange can be set not to be performed. In this case, the bypass damper is used to directly transfer indoor air or outdoor air to the evaporator or the condenser of the heat source generating unit 140 by driving a motor (not shown), or to transfer the heat after exchanging the heat.

The heat source generating unit 140 controls the amount of heat generated by controlling the flow rate of the refrigerant and the amount of fan blowing in the evaporator and the condenser according to the variation of the indoor load. When the air conditioning condition is the cooling operation or the heating operation, the heat source 140 controls the flow rate of the refrigerant flowing through the refrigerant coils of the evaporator and the condenser by operating the refrigerant compressor (not shown) according to the variation of the indoor load. In addition, the heat source generating unit 140 can control only the fan blowing amount when the air conditioning condition is the outside air cooling operation or the defrosting operation.

The air discharge unit 150 discharges air through the indoor discharge outlet or the outdoor discharge outlet in cooperation with the air suction unit 110 according to the variation of the indoor load. The air discharge unit 150 can control the amount of air blowing through the indoor discharge port, and the amount of air blowing through the outdoor discharge port can discharge indoor air contaminated by the room. The air discharge unit 150 can adjust the blowing amount of the air in conjunction with the air suction unit 110.

The sensing unit 160 senses indoor and outdoor environmental information. For example, the sensing unit 160 may sense the outdoor humidity, the temperature, and the air pollution degree as well as the indoor humidity, temperature, and air pollution degree. The sensing unit 160 collects indoor and outdoor environmental information according to a predetermined schedule and outputs the collected indoor and outdoor environmental information to a control unit 170, which will be described later. In this case, the air pollution degree can be determined by whether the concentration of carbon monoxide, carbon dioxide, nitrogen, etc. contained in the air exceeds a preset reference value.

The control unit 170 controls the air intake unit 110, the air switching unit 120, the total heat exchanging unit 130, the heat source generating unit 140, the air discharging unit 150 and the sensing unit 160. The control unit 170 controls the air suction and discharge of the air suction unit 110 and the air discharge unit 150 according to the air conditioning condition and the variation of the indoor load through the humidity, . The control unit 170 determines whether the indoor air or the outside air sucked from the air suction unit 110 is to be transferred to the path of the evaporator or the compressor of the heat source generating unit 140. In addition, the control unit 170 controls whether or not the total heat exchange unit 130 exchanges heat between the inside air and the outside air. In addition, the controller 170 controls the flow rate of the refrigerant or the fan blowing amount in the evaporator or the condenser of the heat source generating unit 140. A concrete control operation of the control unit 170 will be described later.

Meanwhile, the cooling / heating / ventilation simultaneous control apparatus 100 according to another embodiment of the present invention may further include a pollution degree detecting unit (not shown). The pollution degree detection unit analyzes the weather forecast of the predetermined range to judge whether the average air pollution degree of the outside air exceeds the preset reference pollution degree. For example, the pollution level detecting unit may obtain information on the fine dust concentration or the dust concentration from the weather forecasting unit (not shown) of the local time unit, daily unit, week unit, month unit, year unit .

In this case, when the average air pollution degree of the outside air predicted from the weather forecast exceeds the predetermined reference pollution degree, the controller 170 may set the air conditioner to prevent the outside air from being introduced into the outside air. In addition, the control unit 170 can generate and control an annual air conditioning schedule based on the average air pollution degree on a time unit basis, a daily basis, a weekly basis, a monthly basis, and a yearly basis.

FIG. 2 is a detailed configuration diagram for explaining the operation in the cooling / heating and ventilation simultaneous control apparatus according to FIG. 1 when the air conditioning condition is the cooling operation.

2, when the air conditioning condition of the cooling / heating and ventilation control apparatus 200 is cooling operation, the control unit controls the indoor unit 211, which is sucked from the indoor intake port 211 of the air intake unit 210, 1, and controls the air switching unit 220 to switch the outdoor air sucked from the outdoor air inlet 212 to the second path connected to the condenser 242. Next, the control unit uses the bypass damper 231 of the total heat-exchanging unit 230 to shut off the bypass path so as to perform total heat exchange between the sucked inside air and the outside air. Next, the control unit controls the outdoor unit to be supplied to the evaporator, and the indoor unit is supplied to the condenser. As the fresh outside air passes through the evaporator after the heat exchange, the temperature of the outdoor unit is lowered to cool the room. The indoor polluted air is discharged to the outdoor outlet through the condenser, so that the room is ventilated simultaneously with the cooling.
The control unit senses the temperatures of the heat exchanged air supplied to the evaporator 241 and the condenser 242 of the heat source 240 and controls the flow rate of the refrigerant and the amount of fan blowing of the heat source 240, To reach the set temperature. In addition, the control unit may control to shut off the refrigerant flow rate when the heat source 240 reaches a predetermined temperature, and maintain the ventilation by maintaining only the fan blowing amount. The control unit controls the indoor discharge port 251 of the air discharge unit 250 to be connected to the third path connected to the evaporator 241 and the outdoor discharge port 252 to be connected to the fourth path connected to the condenser 242 .

In this case, the air flow from the heat source 240 to the condenser 242 side is changed from the evaporator 241 side to the evaporator 241 side from the condenser 242, and the outside air is supplied to the indoor air outlet 251. That is, the outside air moves from the second route to the third route, and the bet is connected from the first route to the fourth route. Thus, the heat source loss can be minimized and the air can be purified.

FIG. 3 is a detailed configuration diagram for explaining the operation in the case where the air conditioning condition in the cooling / heating and ventilation simultaneous control device according to FIG. 1 is a heating operation.

Referring to FIG. 3, when the air conditioning condition of the cooling / heating and ventilation simultaneous control device 300 is cooling operation, the control unit controls the outdoor air sucked from the outdoor air intake port 312 of the air intake unit 310, 1, and controls the air switching unit 320 to switch the inside air sucked from the indoor air inlet 311 to the second path connected to the condenser 342. [ Next, the control unit uses the bypass damper 331 of the total heat-exchanging unit 330 to shut off the bypass path so as to perform total heat exchange between the sucked inside air and the outside air. Next, the control unit controls the outdoor unit to be supplied to the condenser and the indoor unit to be supplied to the evaporator. The fresh outside air passes through the condenser after the heat exchange, and the temperature rises to become hot heat, The indoor polluted air is discharged to the outdoor outlet through the evaporator to control the ventilation of the room simultaneously with the heating.
The control unit senses the temperatures of the heat exchanged air supplied to the evaporator 341 and the condenser 342 of the heat source generating unit 340 and controls the refrigerant flow rate and fan blowing amount of the heat source generating unit 340, To reach the set temperature. In addition, when the heat source 340 reaches a predetermined temperature, the controller may control the flow rate of the refrigerant to be shut off, and the ventilation may be maintained by maintaining only the fan blowing amount. The control unit controls the outdoor discharge port 352 of the air discharge unit 350 to be connected to the third path connected to the evaporator 341 and the indoor discharge port 351 to be connected to the fourth path connected to the condenser 342 .

In this case, the outside air is changed from the evaporator 341 side to the condenser 342 side and the inside air is changed from the condenser 342 to the evaporator 341 side to supply the outside air to the indoor outlet 351. That is, the outside air moves from the first path to the fourth path, and the inside air is connected from the second path to the third path. Thus, the heat source loss can be minimized and the air can be purified.
FIG. 4 is a detailed configuration diagram for explaining the operation of the air conditioning and ventilation simultaneous control device according to FIG. 1 when the air conditioning condition is the defrosting operation.

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Referring to FIG. 4, when the air conditioning condition of the cooling / heating and ventilation control device 500 is defrosting operation, the control unit controls the indoor unit 511, which is sucked from the indoor suction port 511 of the air suction unit 510, 1, and controls the air switching unit 520 to switch the outdoor air sucked from the outdoor air inlet 512 to the second path connected to the condenser 542. Next, the control unit opens the bypass path by using the bypass damper 531 of the total heat-exchanging unit 530 to control the total heat exchange between the sucked inside air and the outside air to be interrupted. Next, the control unit may control the fan blowing amount so that the indoor air flows into the evaporator 541 of the heat source generating unit 540, and the outdoor air is supplied to the condenser 542. Next, the control unit controls the indoor discharge port 551 of the air discharge unit 550 to be connected to the third path connected to the evaporator 541 and the outdoor discharge port 552 to be connected to the fourth path connected to the condenser 542 .
FIG. 5 is a detailed configuration diagram for explaining the operation in the case where the air conditioning condition in the cooling / heating and ventilation simultaneous control device according to FIG. 1 is the outdoor air cooling operation.
5, when the air conditioning condition of the cooling / heating / ventilation simultaneous control device 400 is the outdoor air cooling operation, the control unit controls the outdoor air sucked from the outdoor air intake port 412 of the air intake unit 410 to be connected to the evaporator 441 And controls the air switching unit 420 to switch the inside air sucked from the indoor air inlet 411 to the second path connected to the condenser 442. [ Next, the control unit opens the bypass path by using the bypass damper 431 of the total heat-exchanging unit 430 to control the total heat exchange between the sucked inside air and the outside air to be blocked. Next, the control unit senses the temperature of the air that has been interrupted by the total heat supplied to the evaporator 441 and the condenser 442 of the heat source generating unit 440 and detects the temperature of the heat source generating unit 440, So as to reach a predetermined temperature. In addition, the control unit can control to shut off the refrigerant flow rate so that the room temperature can reach the predetermined temperature, and to keep the fan blowing amount to ventilate simultaneously with the outdoor air cooling. The control unit controls the indoor discharge port 451 of the air discharge unit 450 to be connected to the third path connected to the evaporator 441 and the outdoor discharge port 452 to be connected to the fourth path connected to the condenser 442 .
In this case, the air from the heat source generating unit 440 flows from the evaporator 441 side to the condenser 442 side, while the outside air flows from the condenser 442 to the evaporator 441 side, and the outside air is supplied to the indoor discharge port 451. That is, the outside air moves from the second path to the fourth path, and the inside air is connected from the first path to the third path. Thus, the heat source loss can be minimized and the air can be purified.

Meanwhile, the simultaneous cooling / heating and ventilation control apparatus according to another embodiment of the present invention analyzes the weather forecast of a predetermined range to determine whether the average air pollution degree of the outside air exceeds the preset reference pollution degree. In this case, the control unit switches the air conditioning condition to the outdoor air cooling when the average air pollution degree exceeds the reference pollution degree. If the average air pollution degree does not exceed the reference pollution degree, the control unit controls the air conditioning condition of the predetermined cooling operation, heating operation, can do.

As described above, the simultaneous cooling / heating and ventilation control apparatus according to the embodiment of the present invention can simultaneously control the indoor air conditioning and ventilation according to the air conditioning condition. In addition, the ventilation can be controlled according to the air pollution degree of outdoor air.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, Therefore, the present invention should be construed as a description of the claims which are intended to cover obvious variations that can be derived from the described embodiments.

100: simultaneous cooling / heating and ventilation control device 110:
120: air switching unit 130: total heat exchanging unit
140: heat source generating unit 150:
160: sensing unit 170:
200: simultaneous cooling / heating and ventilation control device 210:
211: indoor intake port 212: outdoor intake port
220: air switching unit 230: total heat exchanging unit
231: bypass damper 240: heat source generating unit
241: Evaporator 242: Condenser
250: air outlet 251: indoor outlet
252: Outside outlet
300: simultaneous cooling and heating and ventilation control device 310: air intake part
311: Indoor intake port 312: Outdoor intake port
320: air switching unit 330: total heat exchanging unit
331: bypass damper 340: heat source generating unit
341: Evaporator 342: Condenser
350: air outlet 351: indoor outlet
352: Outside outlet
400: simultaneous cooling and heating and ventilation control device 410: air intake part
411: Indoor intake port 412: Outdoor intake port
420: air switching unit 430: total heat exchanging unit
431: Bypass damper 440: Heat source generating unit
441: Evaporator 442: Condenser
450: air discharge part 451: indoor discharge port
452: Outside outlet
500: simultaneous cooling / heating and ventilation control device 510: air intake part
511: Indoor intake port 512: Outdoor intake port
520: air switching part 530: total heat exchanging part
531: Bypass damper 540: Heat source generating unit
541: Evaporator 542: Condenser
550: air outlet part 551: indoor outlet
552: Outside outlet

Claims (6)

An air suction unit for sucking air through an indoor suction port or an outdoor suction port;
An entire heat exchanging part for performing total heat exchange between the inside air and the outside air by using a bypass damper according to a predetermined air conditioning condition and an indoor load variation;
A heat source generating unit for controlling the flow rate of the refrigerant and the fan blowing amount of the evaporator and the condenser according to the variation of the indoor load to regulate the generated heat amount;
An air switching unit for switching the flow of the inside air sucked through the indoor air inlet and the outdoor air sucked through the outdoor air inlet according to a predetermined air conditioning condition and moving the indoor air or the outside air to a path connected to the evaporator or the condenser of the heat source generating unit, ;
An air outlet for discharging air through an indoor outlet or an outdoor outlet in cooperation with the air intake part according to the variation of the indoor load;
A sensing unit for sensing indoor and outdoor environmental information; And
And a control unit for controlling the air suction unit, the air switching unit, the total heat exchanging unit, the heat source generating unit, the air discharging unit, and the sensing unit,
Wherein the controller controls the motor and the bypass to switch the air flow path and the outdoor air flow path in accordance with any one of the cooling operation, the heating operation, the outdoor cooling operation, and the defrost operation, And controlling the operation of the damper to perform outdoor air introduction ventilation. The method according to claim 1,
When the air conditioning condition is a cooling operation,
The air switching unit switches the inside air to a first path connected to the evaporator and switches the outside air to a second path connected to the condenser,
The bypass passage is cut off by the total heat-exchanging portion using the bypass damper to perform total heat exchange between the inside air and the outside air,
The total heat exchanged outside air is supplied to the evaporator, the temperature of which is lowered by the heat absorbed by the evaporator, so that the cold air becomes cold air and is supplied to the room through the room vent,
Wherein the heat source generating unit senses the temperature of the heat exchanged air supplied to the evaporator and the condenser to control the flow rate of the refrigerant and the amount of the fan air to reach a predetermined temperature, The flow rate is cut off, and only the fan blowing amount is maintained to ventilate,
Wherein the outdoor air outlet is connected to a third path connected to the evaporator, and the outdoor outlet is connected to a fourth path connected to the condenser. The method according to claim 1,
Wherein when the air conditioning condition is a heating operation,
The air switching unit switches the outside air to a first path connected to the evaporator and switches the inside air to a second path connected to the condenser,
The bypass passage is cut off by the total heat-exchanging portion using the bypass damper to perform total heat exchange between the inside air and the outside air,
The outdoor heat exchanger is supplied to the condenser, and the temperature of the outdoor heat exchanger is increased by the amount of heat radiated from the condenser. As a result, the hot air becomes hot and is supplied to the room through the room outlet,
Wherein the heat source generating unit senses the temperature of the heat exchanged air supplied to the evaporator and the condenser to control the flow rate of the refrigerant and the amount of the fan air to reach a predetermined temperature, The flow rate is cut off, and only the fan blowing amount is maintained to ventilate,
Wherein the outdoor air outlet is connected to a third path connected to the evaporator, and the indoor air outlet is connected to a fourth path connected to the condenser. The method according to claim 1,
When the air-conditioning condition is the outdoor air-cooling operation,
The air switching unit switches the outside air to a first path connected to the evaporator and switches the inside air to a second path connected to the condenser,
The bypass passage is opened in the total heat-exchanging portion using the bypass damper to block the total heat exchange between the inside air and the outside air,
Wherein the heat source generating unit senses the temperature of the outside air supplied to the evaporator and the inside air supplied to the condenser so as to control the fan blowing amount to reach a predetermined temperature, and when the predetermined temperature is reached, So that only the fan blowing amount is maintained to ventilate,
Wherein the outdoor air outlet is connected to a third path connected to the evaporator, and the outdoor outlet is connected to a fourth path connected to the condenser. The method of claim 3,
Wherein when the air conditioning condition is the defrosting operation,
The air switching unit switches the inside air to a first path connected to the evaporator and switches the outside air to a second path connected to the condenser,
The bypass passage is opened in the total heat-exchanging portion using the bypass damper to block the total heat exchange between the inside air and the outside air,
And controlling the fan blowing amount so that the inside air flows into the evaporator from the heat source generating unit and the outside air flows into the condenser. 5. The method of claim 4,
Further comprising a pollution degree detecting unit for analyzing the weather forecast of the predetermined range and determining whether the average air pollution degree of the outside air exceeds a preset reference pollution degree,
Wherein when the average air pollution degree exceeds the reference pollution degree,
The air switching unit switches the inside air to a first path connected to the evaporator and switches the outside air to a second path connected to the condenser,
The bypass passage is opened in the total heat-exchanging portion using the bypass damper to block the total heat exchange between the inside air and the outside air,
The indoor air outlet is connected to the third path connected to the evaporator, and the outdoor outlet is connected to the fourth path connected to the condenser. When the average air pollution degree of the outdoor air exceeds the reference value, Cooling / heating and ventilation simultaneous control device for preventing ventilation.

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