KR100519331B1 - cooling and heating system with ventilating room and air conditioning apparatus using the system - Google Patents

Abstract

The present invention relates to an air conditioner, and more particularly, to a ventilation and heating system and an air conditioner to which the system is applied.

To this end, the present invention, the present invention is formed so that the air intake passage and the discharge passage is intersected therein, the air intake and discharge portion on one side of the indoor side and one side of the outdoor side so as to correspond to the end of the suction passage and the discharge passage; Each of which is formed, wherein an inclined surface is formed on an upper side of the indoor side, and a case in which a suction part of the suction passage or a discharge part of the discharge passage is formed on the inclined surface, and is installed in a portion where the suction passage and the discharge passage cross each other, An electrothermal exchanger (20) having a first flow passage portion communicating with the discharge passage and a second flow passage portion communicating with the suction passage, respectively, a compressor, a four-sided and an expansion device installed on the discharge passage inside the case, The air-conditioning and heating system for both ventilation includes a first and second heat exchangers respectively installed in the suction passage and the discharge passage, and first and second blower fans respectively installed in the suction passage and the discharge passage. Yongdoen provide an air conditioner.

Description

Cooling and heating system with ventilating room and air conditioning apparatus using the system

The present invention relates to an air conditioner, and more particularly, to an air conditioner using a ventilation and cooling system.

Hereinafter, a general air conditioning system of the air conditioner will be described with reference to FIG. 1.

1 is a block diagram showing a cooling and heating system of a general air conditioner.

Referring to FIG. 1, a cooling and heating system applied to a general air conditioner includes a compressor 1, a four-sided side 2, an outdoor heat exchanger 3, an indoor heat exchanger 4, and an expansion device 5. . An outdoor fan 3a is installed near the outdoor heat exchanger 3, and an indoor fan 4a is installed near the indoor heat exchanger 4.

The cooling and heating system is cooled or heated by switching the four sides 2 by the control unit to flow the refrigerant to one side or the other side.

First, a case in which the cooling and heating system is cooled is described.

The refrigerant compressed by the high temperature and high pressure in the compressor (1) is fed to the outdoor heat exchanger (3) by switching the four sides (2), the refrigerant condensed while being heat-exchanged with the outdoor air in the outdoor heat exchanger (5) Is sent to). The refrigerant expanded at low temperature and low pressure in the expansion device is heat-exchanged with the indoor air in the indoor heat exchanger (4) and then sent back to the compressor (1). At this time, the indoor air is cooled while passing through the indoor heat exchanger 4 as the indoor fan 4a is rotated, and then discharged back to the indoor space, thereby cooling the indoor space to a constant temperature.

Next, a case in which the air conditioning system is heated is described.

The refrigerant compressed by the high temperature and high pressure in the compressor 1 is pumped to the indoor heat exchanger 4 by switching the four sides 2. At this time, a high temperature refrigerant flows through the indoor heat exchanger (4). The indoor air is heated while passing through the indoor heat exchanger 4 as the indoor fan 4a is rotated, and then discharged back to the indoor space, thereby heating the indoor space to a constant temperature.

Subsequently, the refrigerant condensed in the indoor heat exchanger (4) is conveyed to the expansion device (5), and the refrigerant expanded at low temperature and low pressure in the expansion device (5) is heat-exchanged with outdoor air in the outdoor heat exchanger (3). It is sent back to the compressor (1).

As the refrigerant cycle is continuously performed, the indoor space is constantly cooled and heated to a temperature selected by the user.

However, the air conditioning system has a problem that the indoor air is polluted and dried because it repeatedly circulates the indoor air by cooling or heating the indoor air.

When indoor air is polluted or dried, users become uncomfortable, and the user opens a window to ventilate the indoor space with outdoor air.

At this time, since indoor air having a constant temperature state is discharged to the outside, energy loss is greatly generated, and power consumption is greatly increased because the indoor space needs to be heated or heated to a constant state again after ventilation.

In order to solve the above problems, the present invention provides a combined ventilation and heating system for preventing indoor air from being polluted or dried by allowing outdoor air having a constant temperature and humidity to enter an indoor space during cooling or heating operation. It is an object to provide an applied air conditioner.

In order to achieve the above object, the present invention is formed to cross the air intake passage and the discharge passage therein, so that the air intake and discharge portion on one side of the indoor side and one side of the outdoor side so as to correspond to the ends of the suction passage and the discharge passage, respectively. A case having an inclined surface formed on an upper side of the interior side surface, and a suction part of the suction passage or a discharge part of the discharge passage formed on the inclined surface; A duct which crosses the suction passage and the discharge passage; A louver rotatably installed to adjust a discharge direction of air in the discharge part of the indoor side; It is provided at the portion where the suction passage and the discharge passage intersect, and inside the first passage portion communicating with the discharge passage and the second passage portion in a direction perpendicular to the first passage portion, the second passage portion in communication with the suction passage is winding. A plurality of bent plates are alternately formed in alternating layers as they are stacked, and indirectly exchanges heat while the air in each passage passes; It is provided at a portion where the suction passage and the discharge passage intersect, and the first passage portion communicating with the discharge passage and the second passage portion communicating with the suction passage are respectively formed therein, and indirectly while the air in each passage passes. A total heat exchanger for heat exchange; A compressor installed on the discharge passage inside the case to compress the refrigerant; Four sides to be installed in the discharge side refrigerant pipe of the compressor to switch the flow direction of the refrigerant in accordance with the operation mode; A first heat exchanger installed at an air discharge side of the discharge passage on the basis of the total heat exchanger and exchanging air in the discharge passage with the refrigerant introduced as the four sides are switched; and air in the suction passage based on the heat exchanger A second heat exchanger installed at a discharge side to exchange heat between the refrigerant and the air in the suction passage; An auxiliary suction part formed separately from the air suction part on a lower surface of the case positioned between the second heat exchanger and the total heat exchanger; An expansion device installed in the refrigerant pipe between the first and second heat exchangers to expand the refrigerant discharged from any one of the first and second heat exchangers; The first and second heat exchangers, which are respectively installed in the suction passage and the discharge passage, heat the air passing through the first flow path part and the second flow path part of the total heat exchanger in the first and second heat exchangers, and then discharge the air into the indoor and outdoor areas. Provided is an air conditioner to which a combined ventilation air conditioning system including a blowing fan is applied. Hereinafter, an embodiment of a combined ventilation air conditioning system according to the present invention will be described with reference to FIGS. 2 and 3.

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Figure 2 is a schematic view showing a dual-use cooling and heating system according to the present invention, Figure 3 is a perspective view showing a total heat exchanger constituting the cooling and heating system of FIG.

Referring to FIG. 2, the ventilation / cooling and heating system includes a compressor 11 for compressing a refrigerant, a four-sided valve 12 installed at a discharge side refrigerant pipe of the compressor to switch the flow direction of the refrigerant according to an operation mode, and The first and second heat exchangers 13 and 14 for condensing or evaporating the refrigerant introduced by switching sides, and a refrigerant pipe between the first heat exchanger 13 and the first and second heat exchangers. Expansion device (15) for expanding the refrigerant discharged from any one of the air, the first heat exchanger (20) provided between the first and second heat exchangers, and the first, second installed near the heat exchanger (20) It is configured to include a blowing fan.

The first flow path part 22 and the second flow path part 23 are formed in the electrothermal heat exchanger 20 so as to indirectly exchange heat while passing indoor air and outdoor air. Here, the first channel portion and the second channel portion are formed independently so as not to communicate with each other.

As an example of the structure of the pre-heat exchanger 20, the pre-heat exchanger 20 is the first flow path 22 and the second flow path as a plurality of winding plate 21 is bent as shown in FIG. The parts 23 are formed alternately in layers. In this case, the first flow path part 22 and the second flow path part 23 are formed substantially perpendicularly.

Here, the plate 21 is preferably formed of a material having excellent thermal conductivity, for example, such as aluminum. This is to improve heat exchange performance while the indoor air and the outdoor air pass through the first and second flow path parts 22 and 23 to recover energy loss discharged to the outside.

The heat exchanger is not limited to the above-described structure, and it is understood that the structure for forming the first and second flow paths inside the heat exchanger may also be variously modified.

On the other hand, the first blower fan 16 is installed on the indoor air suction side or the discharge side based on the total heat exchanger 20, and the second blower fan 17 is the outdoor air suction side based on the heat exchanger 20. Or on the discharge side. Here, the first and second blowing fans are not limited to axial flow fans, but may be applied to various types of fans.

The indoor air sucked by the first blower fan 16 sequentially passes through the first flow path part 22 and the first heat exchanger 13 of the total heat exchanger 20, and then is discharged to the outside. At the same time, the outdoor air sucked by the second blower fan 17 passes through the second flow path 23 and the second heat exchanger 14 of the total heat exchanger 20 in sequence, and then discharges into the indoor space. do.

In this process, the indoor air and outdoor air pass through the heat exchanger 20 to indirectly perform heat exchange, and the thermal energy of the indoor air is recovered by a predetermined amount by the outdoor air. That is, the air of the suction passage 33 is introduced into the second heat exchanger 14 in a state where the temperature is lower when cooling and the temperature is higher when heating. Therefore, more cooled or heated air may be discharged to the indoor space.

Next, with reference to the accompanying Figure 4 with respect to an embodiment of the air conditioner to which the dual-purpose ventilation system according to the present invention is applied.

Figure 4 is a perspective view showing an embodiment of an air conditioner to which the combined dual air conditioning system according to the present invention.

Referring to FIG. 4, the combined air conditioner includes a case 30 forming an external appearance, and a combined air conditioning and heating system installed inside the case.

First, a case of the air conditioner will be described.

The air suction passage 33 and the discharge passage 32 are formed to intersect in the case 30, and the air suction portions 32a and 33a and the discharge portion are formed at portions corresponding to the ends of the suction passage and the discharge passage. 32b and 33b are formed, respectively.

More specifically, the case 30 is provided with a duct 31 so as to cross the suction passage 33 and the discharge passage 32. In addition, the air suction parts 32a and 33a and the discharge parts 32b and 33b are disposed on one surface of the case 30 and the one surface of the outdoor side so as to correspond to the ends of the suction passage 33 and the discharge passage 32. Each is formed.

At this time, the inclined surface (30a) is formed on the upper side of the indoor side, the suction surface (32a) of the discharge passage or the discharge portion (33b) of the suction passage is formed on the inclined surface (30a). The inclined surface 30a forms a larger suction angle and discharge angle of the air on one surface of the indoor side, thereby preventing mixing of the suction air and the discharge air on the indoor side.

In such a case 30, it is more preferable that the louver is rotatably installed in the discharge part 33b of the one side of the indoor side. The reason for this is to control the discharge direction of the air discharged to the indoor space through the discharge unit 33b during air conditioning.

It will be described with respect to the ventilation and cooling system installed in such a case.

The heat exchanger 20 is installed at a portion where the discharge passage 32 and the suction passage 33 cross each other. Inside the electrothermal heat exchanger 20, a first flow passage part 22 communicating with the discharge passage 32 and a second flow passage portion 23 communicating with the suction passage 33 are formed. Thus, the air in each passage is indirectly heat exchanged while passing through each passage portion. Here, the first flow path part 22 and the second flow path part 23 are formed independently so as not to communicate with each other.

For example, the first heat exchanger 20 has a first flow path part 22 and a second flow path part 23 as a plurality of plates 21 which are twisted and bent as shown in FIG. 3 are stacked. It is formed alternately in layers. In this case, the first flow path part 22 and the second flow path part 23 are formed substantially perpendicularly.

Here, the plate 21 is preferably formed of a material having excellent thermal conductivity, for example, such as aluminum.

It is understood that such a total heat exchanger is not limited to the above-described structure, and may be variously modified.

Meanwhile, the compressor 11, the four sides 12, the first and second heat exchangers 13 and 14, and the expansion device 15 installed inside the case 30 will be described.

A compressor 11 for compressing a refrigerant is installed in the case 30, and four sides 12 are installed in the discharge-side refrigerant pipe of the compressor 11. The four sides 12 performs a function of switching the flow direction of the refrigerant in accordance with the operation mode.

At this time, the compressor 11 is preferably installed on the air discharge side of the discharge passage (32). This is to improve the operating performance of the compressor by allowing the compressor to cool before the indoor air is discharged to the outside.

In addition, a first heat exchanger 13 is installed in the discharge passage 32, and a second heat exchanger 14 is installed in the suction passage 33.

In this case, the first heat exchanger 13 is installed on the air discharge side of the discharge passage 32 based on the total heat exchanger 20, and the second heat exchanger 14 is based on the total heat exchanger 20. It is provided on the air discharge side of the suction passage 33. Accordingly, the first heat exchanger 13 exchanges heat with the indoor air of the discharge passage 32, and the second heat exchanger 14 exchanges heat with the outdoor air of the suction passage 33.

Here, the first heat exchanger 13 is preferably inclined so as to be substantially parallel to one surface of the total heat exchanger (20). This is to reduce the flow resistance of the air by allowing the air of the discharge passage 32 to flow into the first heat exchanger 13 as soon as it passes through the total heat exchanger 20.

And, it is more preferable that the condensate receiving grooves 37 are formed in the lower portions of the first and second heat exchangers 13 and 14, respectively. This is for treating condensate flowing down the heat exchanger acting as an evaporator when the air conditioner is cooled or heated. The condensate receiving groove 37 is formed on the bottom surface of the case 30, respectively.

An expansion device 15 is installed in the refrigerant pipe between the first and second heat exchangers installed as described above. The expansion device 15 expands the refrigerant discharged from any one of the first and second heat exchangers according to the air conditioning operation of the air conditioner.

In addition, a separate auxiliary suction part 34 is formed on the lower surface of the case 30 positioned between the second heat exchanger 14 and the total heat exchanger 20. This auxiliary suction has a grille shape.

In addition, a flow path opening and closing device is installed near the auxiliary suction part 34 to selectively open and close the second flow path part 23 and the auxiliary suction part 34 of the total heat exchanger 20.

The flow path opening and closing device includes a plate-shaped opening and closing panel 35 installed between the auxiliary suction part 34 and the heat exchanger 20, and the auxiliary suction part 34 and the second as the rotary opening and closing panel is rotated. It consists of the drive device 36 which selectively blocks the flow path part 23. In this case, the opening and closing panel and the driving device are connected by the lever 36a.

Here, the opening and closing panel 35 should be formed in a size capable of opening and closing the auxiliary suction part 34 and the suction passage 33. In addition, the drive device 36 is a motor device for rotating the panel 35 for opening and closing under the control of the controller.

Such a channel opening and closing device opens the auxiliary suction part 34 when the air conditioner is operated exclusively for heating and cooling, and closes the suction passage 33, and when the air conditioner is operated exclusively for ventilation, heating and cooling operation or ventilation only operation. ) And the suction passage 33 is opened.

In addition, a first blowing fan 16 is installed in the discharge passage 32, and a second blowing fan 17 is installed in the suction passage 33. At this time, the first blowing fan 16 is installed on the suction side or the discharge side of the indoor air of the first flow path part 22, and the second blowing fan 17 is the suction side or the discharge side of the second flow path part (23). Is installed on.

Accordingly, the first blower fan 16 discharges the heat-exchanged air to the outside while passing through the first flow path part 22 of the heat exchanger 20, and the second blower fan 17 is the heat exchanger 20. The heat exchanged air is discharged into the room while passing through the second flow path part 23 of

The operation of the combined-use air conditioner configured as described above will be described with reference to FIGS. 5A and 5B.

The combined-use air conditioner is operated in a ventilation / cooling / heating mode, a ventilation-only mode, or a heating / heating-only mode.

First, a case in which the air conditioner is operated in a ventilation / cooling and heating mode will be described with reference to FIG. 5A.

First, when the air conditioner is ventilated and cooled, the refrigerant compressed by the compressor 11 may move the four sides 12, the first heat exchanger 13, the expansion device 15, and the second heat exchanger 14. After the sequential flow, the refrigerant cycle flowing back into the compressor 11 is performed. At this time, the first heat exchanger 13 functions as a condenser and the second heat exchanger 14 functions as an evaporator.

At the same time, as the first blower fan 16 is rotated, indoor air flows into the discharge passage 32 through the suction unit 32a, and as the second blower fan 17 is rotated, the outdoor air is sucked in. It flows into the suction path 33 through the part 33a.

The indoor air introduced into the discharge passage 32 passes through the first passage portion 22 of the total heat exchanger 20, and the outdoor air introduced into the suction passage 33 passes through the second passage of the total heat exchanger 20. Pass the part 23. At this time, the indoor air and the outdoor air is indirectly heat exchanged while passing through the heat exchanger (20), and the indoor air takes heat of the outdoor air by the heat exchange. As such, the total heat exchanger 20 recovers the thermal energy of the indoor air through the outdoor air.

The outdoor air passing through the second flow path part 23 of the total heat exchanger 20 is introduced into the second heat exchanger 14 in a state where the temperature is considerably lower than before entering the total heat exchanger 20. This low temperature outdoor air is cooled once more while passing through the second heat exchanger 14 to become cooler cold air. The cold air is discharged into the indoor space through the discharge portion 33b of the suction passage 33 to cool the indoor space to a constant temperature. At this time, by adjusting the louver angle of the discharge portion (33b) it can be discharged to the cold air in a suitable position of the indoor space.

In addition, the indoor air introduced into the discharge passage 32 flows into the first heat exchanger 13 as soon as it passes through the first flow path part 22 of the total heat exchanger 20, and in the first heat exchanger 13. The heat exchanged warm air is discharged to the outside through the discharge part 32b after cooling the compressor 11 while passing through the compressor 11.

Then, when the drive device 36 is operated, the opening and closing panel 35 closes the auxiliary suction part 34 by the action of the lever 36a.

On the other hand, when the second heat exchanger 14 acts as an evaporator for a long time, the moisture contained in the air condenses on the surface of the second heat exchanger 14. The condensate thus generated flows down to the lower part of the second heat exchanger 14 and falls into the condensate receiving groove 37. This condensate is collected in a condensate treatment container (not shown) installed separately.

As described above, the dual-purpose air conditioner simultaneously cools the indoor space by cooling outdoor air when operating in the ventilation / cooling mode, thereby simultaneously cooling and cooling the indoor space. Therefore, even when the air conditioner is operated for a long time to cool the indoor space, the indoor air is kept clean and the humidity is kept constant.

Next, when the air conditioner is operated in the ventilation / heating mode, the flow of the indoor air and the outdoor air is the same as in the operation of the ventilation / cooling mode described above and will be omitted below.

However, the refrigerant of the air conditioner flows in the opposite direction to the cooling time. That is, the refrigerant compressed by the compressor 11 performs a refrigerant cycle in which the second heat exchanger 14, the expansion device 15, and the first heat exchanger 13 sequentially flow. At this time, the first heat exchanger 13 functions as an evaporator, and the second heat exchanger 14 functions as a condenser.

The ventilation / cooling and heating mode of such an air conditioner is preferably carried out in the middle of the air-conditioning only mode described below. This is to reduce the loss of thermal energy generated when the indoor air is discharged to the outside.

Second, since the flow of the indoor and outdoor air is the same as the operation of the ventilation / cooling and heating mode described above in the ventilation-only mode operation of the air conditioner, a description thereof will be omitted below.

In the ventilation only mode operation, however, the first and second blowing fans 16 and 17 are operated without the cooling and heating system operating. Accordingly, the outdoor air and the indoor air are heat-exchanged while passing through the total heat exchanger 20, whereby heat energy of the indoor air is partially recovered. Therefore, after the ventilation-only operation is completed, the temperature difference of the indoor space changes considerably smaller than the conventional one.

Third, a case in which the air conditioner is operated in the air conditioner mode will be described with reference to FIG. 5B.

The refrigerant compressed by the compressor 11 performs a refrigerant cycle that circulates through the first heat exchanger 13, the expansion device 15, and the second heat exchanger 14 during the cooling only mode operation, and operates only in the heating only operation mode. The refrigerant cycle circulates through the second heat exchanger 14, the expansion device 15, and the first heat exchanger 13.

In this state, when the driving device 36 is operated, the opening and closing panel 35 is rotated by a predetermined angle by the action of the lever 36a to open the auxiliary suction part 34 and close the suction passage 33. Let's do it.

At the same time, as the second blowing fan 17 is rotated, indoor air flows into the suction passage 33 through the auxiliary suction unit 34. However, the first blowing fan 16 is stopped to prevent the indoor air from flowing into the discharge passage 32.

At this time, the indoor air introduced into the space between the second heat exchanger 14 and the total heat exchanger 20 in the suction passage 33 passes through the second heat exchanger 14 to become cold or warm, and then the discharge part ( It is discharged to the interior space through 33b).

In contrast, the discharge passage 32 has almost no flow of indoor air, but flows into the outdoor discharge passage 32 through the discharge portion 32b. Therefore, after cooling the compressor 11 and the first heat exchanger 13, the outdoor air is discharged to the outside again through the discharge part 32b.

As such, when the air conditioner is operated exclusively for heating and cooling, the indoor space may be cooled and heated while continuously circulating the indoor air as in the related art without discharging the indoor air to the outside.

As described above, the air-conditioning system using the combined ventilation and ventilation system according to the present invention has the following effects.

First, the air conditioner according to the present invention has the effect of cooling and heating the indoor space while simultaneously performing ventilation and air conditioning during heating and cooling. Therefore, even if the heating and cooling operation for a long time it can be prevented that the indoor air is polluted or dried.

Second, since the heat energy of the indoor air is recovered through the total heat exchanger, the energy loss can be reduced as much as possible even when the indoor air is discharged to the outside. At the same time, the pre-heat exchanger may heat-exchange the heat-exchanged outdoor air in the second heat exchanger to supply cooler cold air or hotter warmer to the indoor space.

Third, as the air conditioner is operated only for heating and cooling, there is an effect of cooling and heating the indoor space while circulating only indoor air. Therefore, it is possible to perform the cooling and heating operation without discharging the indoor air to the outside.

Fifth, since the air conditioner is air-conditioned while performing ventilation, there is no need to ventilate a separate indoor space. Therefore, it is possible to omit the process of heating and cooling the indoor space again after the ventilation as in the prior art. Therefore, it is possible to prevent suddenly feeling cold or heat when ventilating the indoor space.

1 is a block diagram showing a cooling and heating system of a general air conditioner.

Figure 2 is a schematic view showing a combined ventilation air conditioning system according to the present invention.

Figure 3 is a perspective view showing a total heat exchanger constituting the cooling and heating system of FIG.

Figure 4 is a perspective view showing an embodiment of the air conditioner to which the combined dual air conditioning system according to the present invention.

5A is a state diagram showing the flow of indoor and outdoor air when the air conditioner of FIG. 4 is operated in a ventilation / cooling / heating mode or a ventilation only mode.

Figure 5b is a state diagram showing the flow of indoor and outdoor air when the air conditioner of Figure 4 is operated in the air conditioning mode.

Explanation of symbols on the main parts of the drawings

13: first heat exchanger 14: second heat exchanger

15: expansion device 16: the first blowing fan

17: second blower fan 20: heat exchanger

21 plate 22 first flow path

23: second euro part 30: case

30a: slope 31: duct

32: discharge passage 32a: suction part

32b: discharge part 33: suction passage

33a: suction part 33b: discharge part

34: auxiliary suction part 35: opening and closing panel

36: drive device 37: condensate receiving groove

Claims (20)

delete delete delete delete The air suction passage and the discharge passage are formed inside to cross each other, and the air suction portion and the discharge portion are formed on one side of the indoor side and one side of the outdoor side so as to correspond to the ends of the suction passage and the discharge passage, respectively. A case in which an inclined surface is formed and a suction portion of the suction passage or a discharge portion of the discharge passage is formed on the inclined surface; A duct which crosses the suction passage and the discharge passage; A louver rotatably installed to adjust a discharge direction of air in the discharge part of the indoor side; It is provided at the portion where the suction passage and the discharge passage intersect, and inside the first passage portion communicating with the discharge passage and the second passage portion in a direction perpendicular to the first passage portion, the second passage portion in communication with the suction passage is winding. A plurality of bent plates are alternately formed in alternating layers as they are stacked, and indirectly exchanges heat while the air in each passage passes; It is provided at a portion where the suction passage and the discharge passage intersect, and the first passage portion communicating with the discharge passage and the second passage portion communicating with the suction passage are respectively formed therein, and indirectly while the air in each passage passes. A total heat exchanger for heat exchange; A compressor installed on the discharge passage inside the case to compress the refrigerant; Four sides to be installed in the discharge side refrigerant pipe of the compressor to switch the flow direction of the refrigerant in accordance with the operation mode; A first heat exchanger installed at an air discharge side of the discharge passage on the basis of the total heat exchanger and exchanging air in the discharge passage with the refrigerant introduced as the four sides are switched; and air in the suction passage based on the heat exchanger A second heat exchanger installed at a discharge side to exchange heat between the refrigerant and the air in the suction passage; An auxiliary suction part formed separately from the air suction part on a lower surface of the case positioned between the second heat exchanger and the total heat exchanger; An expansion device installed in the refrigerant pipe between the first and second heat exchangers to expand the refrigerant discharged from any one of the first and second heat exchangers; And, First and second blower fans installed in the suction passage and the discharge passage, respectively, for discharging air passing through the first flow path part and the second flow path part of the heat exchanger through the first and second heat exchangers, and then discharging them to the indoor and outdoor areas. Air conditioner with a combined ventilation and heating system configured to include a. delete delete delete delete delete delete delete The method of claim 5, The first heat exchanger is an air conditioner to which a combined ventilation air conditioning system is installed to be inclined to be substantially parallel to one surface of the total heat exchanger. The method of claim 5, The air conditioner of the first and second heat exchangers to which a condensed water receiving groove is formed, respectively, a ventilation and heating system. The method of claim 14, The condensate receiving groove is an air conditioner to which a combined ventilation and heating system is formed on the bottom surface of the case. delete The method of claim 5, And an air-conditioning and cooling system for installing a channel opening and closing device to selectively open and close the second flow path part and the auxiliary suction part of the total heat exchanger. The method of claim 17, The flow opening and closing device, A plate-shaped opening and closing panel hinged between the auxiliary suction part and the total heat exchanger; An air conditioner with a combined ventilation and heating system comprising a driving device for selectively closing the auxiliary suction part and the second flow path part by rotating the opening and closing panel. The method of claim 5, And the first blower fan is installed at the indoor air suction side of the first flow path part, and the second blower fan is installed at the discharge side of the second flow path part. The method of claim 5, The compressor is an air conditioner to which a combined ventilation air conditioning system is installed on the air discharge side of the discharge passage.