KR102061272B1 - Heat recovery ventilator - Google Patents

Abstract

Disclosed is a heat recovery ventilator, which comprises: a total heat exchanger which includes a total heat exchanger housing of which an outer surface is individually provided with an element indoor air suction port, an element outdoor air suction port, an element indoor air discharge port, and an element outdoor air discharge port, an element suction flow path in which the element indoor air suction port and the element outdoor air discharge port communicate with each other, and a total heat element which is stored in the heat exchanger housing to exchange heat and moisture after an element discharge flow path, in which the element outdoor air suction port and the element indoor air discharge port communicate with each other, is connected to each other; a heat pump which includes a first heat exchanger, a second exchanger, and a refrigerant driving device which drives a refrigerant between the first heat exchanger and the second exchanger to selectively convert the first heat exchanger and the second exchanger into an evaporator or a condenser; and a flow path device which includes an indoor air suction flow path of which one end has an indoor air suction port communicating with the indoors, an indoor air discharge flow path of which one end has an indoor air discharge port communicating with the indoors, an outdoor air suction flow path of which one end has an outdoor air suction port communicating with the outdoors, and an outdoor air discharge flow path of which one end has an outdoor air discharge port communicating with the outdoors. Therefore, a ventilation function and a heating and cooling function for each season can be embodied. Resultantly, heating and cooling efficiency is enhanced, and a dehumidification effect is improved.

Description

Heat recovery ventilator

The present invention relates to a ventilator, and more particularly, to discharge the indoor air to the outside, not only to supply the outdoor air to the room, but also to heat exchange occurs in the discharged indoor air and the outdoor air supply period, which is required for cooling and heating It relates to a heat recovery ventilator that can save energy.

In general, a ventilation system using an electric heat exchanger is used to discharge polluted indoor air of a building such as an apartment house, an office or a department store, a large mart to the outside, and to supply external air to the indoor space.

That is, in order to ventilate the indoor air, the conventional total heat exchanger is a device that first exchanges outdoor air with indoor air discharged to the outside so that sudden cold air and heat do not flow from the outside to the inside. Therefore, the total heat exchanger maintains the indoor air comfortably by discharging volatile organic compounds generated indoors through the exhaust and inhaling filtered fresh air into the room.

Therefore, when describing the operation of the general heat exchanger, the exhaust fan installed in the heat exchanger is operated when discharging the air inside the air conditioner to the outside, the air contaminated from the indoor to the outdoor while passing through the heat exchanger element at a constant pressure at this time It is discharged to the outside.

On the contrary, when the air supply fan installed in the total heat exchanger is operated, air is sucked into the room while passing through the total heat exchanger element from the outside with the generated positive pressure. At this time, heat and mass transfer are achieved through the total heat exchanger element and the energy loss through the ventilation is minimized. In addition, when the air supply fan and the exhaust fan of the total heat exchanger are operated at the same time, the positive pressure in the room and the positive pressure in the outdoor are kept constant.

However, in order to save energy during the summer, the ventilation amount is regulated to be legally minimized. There is a problem that it is not possible to exhaust the indoor water vapor in summer with such a minimum amount of ventilation. In addition, there is a problem that the cooling load increases due to the steam load during cooling, and the indoor comfort may be lowered.

Even during the winter season, when indoor steam loads are concentrated, problems may occur due to the occurrence of internal condensation.

1. Korean Patent Publication No. 10-1287440 (published Jul. 12, 2013, title of the invention: expanded polypropylene resin type heat exchanger case having a top and bottom separation cover plate and a sliding pull-out joint flange) 2. Korean Registered Patent Publication No. 10-1217605 (2012, 12, 26. Disclosure, Name of the Invention; Expandable Polypropylene Resin Type Heat Exchanger with Flowable Installation Along the Euro Line) 3. Korean Registered Patent Publication No. 10-1514998 (published Apr. 20, 2015. Title of the Invention: Total Heat Exchanger)

Embodiments of the present invention have been made to solve the above problems, to provide a heat recovery ventilator capable of sufficiently dehumidifying indoor steam even with minimal ventilation in the summer, and sufficient dehumidification in winter.

An embodiment of the present invention, in order to solve the above problems, an electric heat exchanger housing each formed with an element indoor air intake, an element outdoor air intake, an element indoor air outlet and an element outdoor air outlet on the outer surface, and the element indoor air intake and And a heating element housed in the heat exchanger housing such that the device suction passage through which the device outdoor air discharge port communicates, and the device discharge passage where the device outdoor air suction port communicates with the device indoor air discharge port are connected to each other to exchange heat and moisture. A total heat exchanger; A refrigerant having a first heat exchanger and a second heat exchanger, which drives a refrigerant between the first heat exchanger and the second heat exchanger, and selectively converts the first heat exchanger and the second heat exchanger into an evaporator or a condenser. A heat pump including a driving device; And an indoor air suction passage having an indoor air intake port communicating with the interior at one end thereof, an indoor air discharge passage having an indoor air discharge port communicating with the interior at one end thereof, and an outdoor air suction passage having an outdoor air intake port communicating with the outside at one end thereof And a flow path device including an outdoor air discharge flow path having an outdoor air discharge port communicating with the outside at one end thereof.

The flow path device may include: a first flow path connection device connecting the other end of the indoor air suction path to the element indoor air suction port; A second flow path connecting device connecting the other end of the outdoor air suction flow path to the device outdoor air suction port; A third flow path connecting device connecting the discharge port of the first heat exchanger to the other end of the outdoor air discharge flow path; A fourth flow path connecting device connecting the element outdoor air discharge port to a suction port of the first heat exchanger; A fifth flow path connecting device connecting the element indoor air discharge port to a suction port of the second heat exchanger; And a sixth flow path connecting device connecting the discharge port of the second heat exchanger to the other end of the indoor air discharge flow path.

The first flow path connecting device may further include a first flow path switching device configured to selectively connect the other end of the indoor air suction flow path to any one of a suction port of the first heat exchanger and the element indoor air suction port. The second flow path connecting device may further include a second flow path switching device configured to selectively connect the other end of the outdoor air suction flow path to any one of an intake port of the second heat exchanger and the element outdoor air intake port. The third flow path connecting device further includes a third flow path switching device for selectively connecting the discharge port of the first heat exchanger to one of the other end of the outdoor air discharge flow path and the element indoor air suction port. The connecting device may further include: a fourth device for selectively connecting the element outdoor air discharge port to any one of an inlet port of the first heat exchanger and the other end of the indoor air discharge channel. And a fifth flow path switching device, wherein the fifth flow path connecting device selectively connects the indoor air discharge port of the device to one of the inlets of the second heat exchanger and the other end of the outdoor air discharge flow path. And a sixth flow path switching device for selectively connecting the discharge port of the second heat exchanger to the other end of the indoor air discharge flow path and the element outdoor air suction port. It is preferable to further include.

The electrothermal heat exchanger may include: a bypass passage bypassing the element suction passage and connecting the element indoor air suction port and the element outdoor air discharge port; And a bypass flow path connecting device for converting air sucked into the device indoor air suction port to pass through any one of the device suction flow path and the bypass flow path.

According to the problem solving means of the present invention as described above it can be expected a variety of effects including the following matters. However, the present invention is not achieved by exerting all of the following effects.

As described above, the heat recovery ventilator of the present invention, as well as the ventilation function, there is an advantage that can implement the heating and cooling function for each season.

In addition, there is an effect that the cooling and heating efficiency is increased as compared to the other air-conditioning device.

In addition, the dehumidification effect is also increased, and there is an advantage in that the cooling and heating efficiency decrease due to humid air can be prevented.

In addition to the dehumidification mode, it is possible to implement only the dehumidification function without ventilation, and by the bypass mode, it is possible to save energy for ventilation during the season.

1 is a conceptual diagram of a heat recovery ventilator of an embodiment of the present invention
2 is a perspective view of the total heat exchanger of FIG.
3 is a plan view showing the air flow of the total heat exchanger of FIG.
4 is a partially exploded perspective view of the total heat exchanger of FIG.
FIG. 5 is a plan view illustrating air flow of the bypass flow path of FIG. 4.
6 is a perspective view of the heating element of FIG.
7 is a conceptual diagram of the heat pump of FIG. 1 in a heating mode;
8 is a conceptual diagram of the heat pump of Figure 1 in the cooling mode
9 is a conceptual view showing the operation of the heat recovery ventilator of Figure 1 in the cooling ventilation mode
FIG. 10 is a graph illustrating a wet air diagram of indoor suction air RA and outdoor suction air OA by the operation of the heat recovery device of FIG. 9; FIG.
11 is a conceptual diagram showing the operation of the heat recovery ventilator of FIG. 1 in a heating ventilation mode;
FIG. 12 is a graph illustrating a humid air diagram of indoor suction air (RA) and outdoor suction air (OA) due to the operation of the heat recovery device of FIG. 11.
13 is a conceptual diagram showing the operation of the heat recovery ventilator of Figure 1 in the dehumidification mode
FIG. 14 is a graph illustrating a wet air diagram of indoor suction air RA and outdoor suction air OA during operation of the heat recovery device of FIG. 13. FIG.
FIG. 15 is a graph illustrating a wet air diagram of indoor suction air RA and outdoor suction air OA by operation of the heat recovery device of FIG. 13; FIG.
FIG. 16 is a conceptual view illustrating the operation of the heat recovery ventilator of FIG. 1 in bypass mode. FIG.

Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings.

1 is a conceptual diagram of a heat recovery ventilator of an embodiment of the present invention, FIG. 2 is a perspective view of the total heat exchanger of FIG. 1, FIG. 3 is a plan view showing the air flow of the total heat exchanger of FIG. 2, and FIG. 4 is a total heat exchanger of FIG. 5 is a plan view illustrating an air flow of the bypass passage of FIG. 4, and FIG. 6 is a perspective view of the heating element of FIG. 3.

As shown in FIG. 1, the heat recovery ventilator according to the first embodiment of the present invention includes a heating element 120 configured to exchange heat and moisture between indoor air discharged to the outside and outdoor air supplied to the interior. A total heat exchanger (100), a first heat exchanger (210), and a second heat exchanger (220) are provided and drive a refrigerant between the first heat exchanger (210) and the second heat exchanger (220). And a heat pump (200) including a refrigerant driving device (230) for selectively converting the first heat exchanger (210) and the second heat exchanger (220) into an evaporator or a condenser; An indoor air intake passage 4110 having an air inlet 4111, an indoor air discharge passage 4120 formed with an indoor air discharge port 4121 at one end thereof, and an outdoor air intake 4131 at one end thereof communicating with the outside And the outdoor air suction flow path 4130 formed at And a flow path device 4100 including an outdoor air discharge passage 4140 having an outdoor air discharge port 4141 formed therein.

The total heat exchanger (100) is a total heat exchanger housing (110) in which an element indoor air intake (111), an element outdoor air intake (113), an element indoor air outlet (114), and an element outdoor air outlet (112) are formed on the outer surface, respectively. And an element suction passage 121 in which the element indoor air suction port 111 and the element outdoor air discharge port 112 communicate with each other, and the element outdoor air suction port 113 and the element indoor air discharge port 114 communicate with each other. The element discharge passage 122 includes a heat transfer element 120 accommodated in the heat exchanger housing to connect with each other to exchange heat and moisture.

The heat exchanger housing 110 includes an outer case 115 having a housing shape and an upper plate 116 which is installed inside the upper outer case 115 of the heat transfer element 120 to form a bypass flow path. do.

The four sides of the outer case 115 is formed with the above-described element indoor air suction port 111, the element outdoor air inlet 113, the element indoor air discharge port 114 and the element outdoor air discharge port 112, the heat transfer in the center The heating element seating portion 115a capable of accommodating the element 120 is formed.

The upper plate 116 is accommodated inside the outer case 115 to partition the space in the height direction, and forms a bypass flow path between the upper plate 116 and the upper side surface of the outer case 115. The upper plate 116 is formed by passing a bypass flow path inlet 116a formed at a position adjacent to the element indoor air intake port 111 and a bypass flow path discharge port 116b formed at a position adjacent to the element outdoor air discharge port 112. An electric damper 116e capable of opening and closing the bypass flow passage 117 is installed in the bypass flow passage discharge port 116b.

The heating element 120 is formed such that the element suction passage 121 and the element discharge passage 122 cross each other. Since a detailed configuration of such a heating element 120 is well known, a detailed description thereof will be omitted. As the material forming the element suction passage 121 and the element discharge passage 122 of the heating element, a paper material is used, which causes moisture permeation and air permeation through the paper material, and exchanges a certain amount of temperature and humidity.

The total heat exchanger (100) bypasses the element suction passage (121), connects the element indoor air suction opening (111) and the element outdoor air discharge opening (112), and the element indoor air suction opening. It includes a bypass flow path connecting device 118 for switching the air sucked into the passage through any one of the element suction passage 121 and the bypass flow path 117. As described above, the bypass flow path 117 is formed in the space between the top plate 116 and the outer case 115. The bypass flow path connecting device 118 may be implemented as an electric damper 116e or the like that can open and close the bypass flow path 117 described above.

The first heat exchanger 210 and the second heat exchanger 220 are installed adjacent to the total heat exchanger 100. Preferably fixed to interview the outer surface of the heat exchanger housing 110 can be reduced in size is more preferable. That is, as shown in the conceptual diagram of FIG. 1, the first heat exchanger 210 is installed at a side adjacent to the element indoor air suction port 111 and the element outdoor air suction port 113, and the element outdoor air discharge port 112 is provided. The second heat exchanger 220 is installed at a side adjacent to the element indoor air discharge port 114 in common.

7 is a conceptual diagram of the heat pump of FIG. 1 in a heating mode, and FIG. 8 is a conceptual diagram of the heat pump of FIG. 1 in a cooling mode.

As shown in these drawings, the refrigerant driving device 230 includes a compressor 231 and an expansion valve 233 connected by a refrigerant passage 234 between the first heat exchanger 210 and the second heat exchanger 220. It includes, and comprises a switching valve 232 for switching the direction of the refrigerant discharged from the compressor 231. It is preferable that the switching valve 232 be a 4-way valve.

Accordingly, when the switching valve 232 is driven to direct the refrigerant discharged from the compressor toward the second heat exchanger 220 as illustrated in FIG. 7, the second heat exchanger 220 becomes a condenser and the first heat exchanger ( 210 becomes a carburetor. In addition, as shown in FIG. 8, when the switching valve 232 is driven to direct the refrigerant discharged from the compressor toward the first heat exchanger 210, the first heat exchanger 210 becomes the condenser and the second heat exchanger. 220 becomes a vaporizer.

 Referring back to FIG. 1, the flow path device 4100 may include a first flow path connecting device 4200 connecting the other end of the indoor air suction flow path 4110 to the element indoor air suction port 111 and the outdoor air. A second flow path connecting device 4300 for connecting the other end of the suction channel 4130 to the element outdoor air suction port 113 and the discharge port 211 of the first heat exchanger 210 are connected to the outdoor air discharge channel 4140. A third flow path connecting device 4400 connected to the other end of the heat sink), a fourth flow path connecting device 4500 for connecting the element outdoor air discharge port 112 to the inlet 212 of the first heat exchanger, and the device A fifth flow path connecting device 4600 for connecting the indoor air discharge port 114 to the inlet 221 of the second heat exchanger, and the discharge port 222 of the second heat exchanger for the indoor air discharge passage 4120. And a sixth flow path connecting device 4700 connected to the other end.

The first flow path connecting device 4200 selectively connects the other end of the indoor air suction path 4110 to one of the suction port 212 and the element indoor air suction port 111 of the first heat exchanger. It further includes a flow path switching device (4220, 4240). That is, the first flow path connecting device 4200 includes a 1-1 flow path 4210 connecting the other end of the indoor air suction path 4110 to the device indoor air suction port 111 and the other end of the indoor air suction path 4110. To the inlet 212 of the first heat exchanger, 1-2 euros 4230, 1-1 electric dampers 4220 to open and close 1-1 euros 4210, and 1-2 euros 4230. It includes a 1-2 electric damper (4240) to open and close. The first flow path switching devices 4220 and 4240 include 1-1 electric dampers 4220 and 1-2 electric dampers 4240.

The second flow path connecting device 4300 may be configured to selectively connect the other end of the outdoor air suction passage 4130 to any one of the suction port 221 of the second heat exchanger and the element outdoor air suction port 113. It further includes a flow path switching device (4320, 4340). That is, the second flow path connecting device 4300 includes a 2-1 flow path 4310 connecting the other end of the outdoor air suction flow passage 4130 to the device outdoor air suction opening 113 and an outdoor air suction flow passage 4130. 2-2 euros 4330 connecting the other end to the second heat exchanger inlet 221, 2-1 electric damper 4320 to open and close the 2-1 euros 4310, and 2-2 euros 4330. And a 2-2 electric damper 4340 to open and close. The second flow path switching devices 4320 and 4340 include a 2-1 electric damper 4320 and a 2-2 electric damper 4340.

The third flow path connecting device 4400 selectively connects the discharge port 211 of the first heat exchanger to one of the other end of the outdoor air discharge flow path 4140 and the element indoor air suction port 111. It further includes a flow path switching device (4420, 4440). That is, the third flow path connecting device 4400 includes a 3-1 flow path 4410 connecting the discharge port 211 of the first heat exchanger 210 to the other end of the outdoor air discharge flow path 4140, and the first flow path. 3-2 flow path 4430 for connecting the discharge port 211 of the heat exchanger to the indoor air suction port 111, 3-1 electric damper 4420 for opening and closing the 3-1 flow path 4410, and 3- It includes a 3-2 electric damper (4440) for opening and closing the two channels (4430). The third flow path switching devices 4420 and 4440 include a 3-1 electric damper 4420 and a 3-2 electric damper 4440.

The fourth flow path connecting device 4500 may be configured to selectively connect the device outdoor air discharge port 112 to any one of the inlets 212 of the first heat exchanger and the other end of the indoor air discharge channel 4120. It further comprises a four flow path switching device (4520, 4540). That is, the fourth flow path connecting device 4500 includes a 4-1 flow passage 4510 connecting the element outdoor air discharge port 112 with the suction port 221 of the first heat exchanger, and the element outdoor air discharge port 112. ) 4-2 euros 4530 connecting the other end of the indoor air discharge passage 4120, 4-1 electric dampers 4520 and 4-2 euros 4530 to open and close the 4-1 euros 4510 4-2 electric damper (4540) for opening and closing). The fourth flow path switching devices 4520 and 4540 include 4-1 electric dampers 4520 and 4-2 electric dampers 4540.

The fifth flow path connecting device 4600 may be configured to selectively connect the element indoor air discharge port 114 to one of the inlets 221 of the second heat exchanger and the other end of the outdoor air discharge channel 4140. It further includes a five flow path switching device (4620, 4640). That is, the fifth channel connecting device 4600 connects the 5-1 channel 4610 and the device indoor air outlet 114 to connect the device indoor air outlet 114 to the inlet 221 of the second heat exchanger. 5-2 euros 4630 connected to the outdoor air discharge passage 4140, 5-1 electric damper 4620 to open and close the 5-1 euros 4610, and 5-2 euros 4630 to open and close 5-2 electric damper (4640). The fifth flow path switching devices 4620 and 4640 include 5-1 electric dampers 4620 and 5-2 electric dampers 4640.

The sixth flow path connecting device 4700 is configured to selectively connect the discharge port 222 of the second heat exchanger to one of the other end of the indoor air discharge path 4120 and the element outdoor air suction port 113. It further comprises a six flow path switching device (4720, 4740). That is, the sixth flow path connecting device 4700 includes a 6-1 flow path 4710 connecting the discharge port 222 of the second heat exchanger to the indoor air discharge flow path 4120, and a second heat exchanger discharge port ( 6-2 euros 4730 connecting 222 to the device outdoor air intake 113, 6-1 electric dampers 4720 for opening and closing 6-1 euros 4710 and 6-2 euros 4730 It includes a 6-2 electric damper (4740) for opening and closing the. The sixth flow path switching devices 4720 and 4740 include a 6-1 electric damper 4720 and a 6-2 electric damper 4740.

9 is a conceptual diagram showing the operation of the heat recovery ventilator of Figure 1 in the cooling ventilation mode.

In the cooling ventilation mode, indoor air is discharged after heat exchange with outdoor air in summer, and outdoor air is supplied to the indoor air. Specifically, the flow path indicated by the solid line is a flow path in which air actually flows, and the flow path indicated by the dotted line indicates that air does not flow. In the following, all of them are expressed in the same manner.

First, the heat pump 200 is driven in the cooling mode as shown in FIG. 8, so that the second heat exchanger 220 is driven to the evaporator, and the first heat exchanger 210 is driven to the condenser.

In addition, 1-1 electric damper 4220, 2-1 electric damper 4320, 3-1 electric damper 4420, 4-1 electric damper 4520, 5-1 electric damper 4620, 6-1 Motor dampers 4720 are all open, 1-2 electric dampers 4240, 2-2 electric dampers 4340, 3-2 electric dampers 4440, 4-2 electric dampers 4540, 5-2 electric The dampers 4640 and 6-2 electric dampers 4740 are all closed. Therefore, the air sucked through the indoor air inlet 4111 is exchanged with heat and moisture with the outdoor air through the heat exchanger 100, and then warmed by the first heat exchanger 210 functioning as a condenser, and then the outdoor air discharge port ( 4141) is discharged to the outside. The air sucked through the outdoor air intake port 4131 is not only cooled by the indoor air dried through the heat exchanger 100 but also transferred to the indoor air where some moisture is discharged, and then a second heat exchanger functioning as an evaporator. Cooled through the machine 220 is supplied to the room.

FIG. 10 illustrates a wet air diagram of indoor suction air RA and outdoor suction air OA by the operation of the heat recovery device of FIG. 9.

As shown in the drawing, the outdoor suction air OA sucked through the outdoor air inlet 4131 is primarily subjected to the heat exchanger 100 and the temperature and humidity are lowered, and the temperature and humidity are passed through the second heat exchanger. Even lower. As a result, more effective dehumidification and cooling functions are exhibited. In particular, since the condenser cooling air uses indoor air that has undergone a total heat exchanger, the heat exchange efficiency is very high. In other words, the condenser does not use high temperature and high humidity outdoor air as in a conventional air conditioner, and by using indoor air having a much lower temperature and a lower humidity than outdoor air, there is an advantage that the cooling efficiency can be further increased.

Due to this effect, it is possible to maintain a low humidity in the room during ventilation, as a result there is an advantage that can significantly reduce the dehumidification load in the room.

FIG. 11 is a conceptual view illustrating the operation of the heat recovery ventilator of FIG. 1 in a heating ventilation mode. FIG.

In the heating ventilation mode, indoor air is discharged after heat exchange with outdoor air in winter, and outdoor air is supplied to the room. First, the heat pump 200 is driven in the cooling mode as shown in FIG. 7, so that the second heat exchanger 220 is driven to the condenser, and the first heat exchanger 210 is driven to the evaporator.

The configuration of the remaining flow path device 4100 is the same as that of FIG. 9.

Therefore, the air sucked through the indoor air inlet 4111 exchanges heat and moisture with the outdoor air through the total heat exchanger 100, and is then cooled by the first heat exchanger 210 functioning as an evaporator. It is discharged to the outside through (4141). The air sucked through the outdoor air intake port 4131 is primarily heated by the indoor air of high temperature and high humidity through the heat exchanger 100. In addition, it is heated through the second heat exchanger 220 which functions as a condenser and supplied to the room.

FIG. 12 illustrates a diagram of a humid air of the indoor suction air RA and the outdoor suction air OA due to the operation of the heat recovery device of FIG. 11.

As shown in the drawing, the outdoor suction air OA sucked through the outdoor air inlet 4131 is primarily heated through the pre-heat exchanger 100, and is further heated while passing through the second heat exchanger. As a result, a more effective heating function is exhibited. In particular, since the air for heating the evaporator uses the indoor air passing through the heat exchanger, there is an advantage that the heat exchange efficiency is very high. That is, the evaporator does not use outdoor air of low temperature like a conventional air conditioner, and uses indoor air having a much higher temperature than outdoor air, so that the cooling efficiency can be further increased.

In the humid air diagram, the relative humidity of the air (SA) flowing into the room is formed higher than that of the air (OA) flowing from the outside. This result is because the outdoor air in winter, the humidity can be expected to maintain the proper humidity indoors.

Separately, if the humidity in the room is very high due to cooking or drying clothes, the effect of discharging moisture may be expected only by the discharge of internal air and the inflow of external air.

FIG. 13 is a conceptual view illustrating the operation of the heat recovery ventilator of FIG. 1 in a dehumidification mode.

Dehumidification mode is a mode that does not vent the outside air to the inside, and circulates again by dehumidifying the inside air. First, the summer season, and then winter dehumidification mode.

In the summer dehumidification mode, the heat pump 200 is driven as shown in FIG. 7 so that the second heat exchanger 220 is driven to the condenser, and the first heat exchanger 210 is driven to the evaporator.

In addition, 1-1 electric damper 4220, 2-1 electric damper 4320, 3-1 electric damper 4420, 4-1 electric damper 4520, 5-1 electric damper 4620, 6-1 Electric dampers 4720 are all closed, 1-2 electric dampers (4240), 2-2 electric dampers (4340), 3-2 electric dampers (4440), 4-2 electric dampers (4540), 5-2 electric The dampers 4640 and 6-2 electric dampers 4740 are all open.

Therefore, the air sucked through the indoor air inlet 4111 is cooled and dried by the first heat exchanger 210, and after exchanging heat and moisture with outdoor air through the heat exchanger 100, the indoor air outlet 4121. To be discharged.

FIG. 14 illustrates a humid air diagram of indoor suction air RA and outdoor suction air OA during operation of the heat recovery device of FIG. 13.

The air sucked through the outdoor air intake port 4131 is heated through the second heat exchanger 220 and flows into the total heat exchanger 100 in a state where the relative humidity is lowered. As a result, the moisture of the indoor air is transferred to the outdoor air through the total heat exchanger 100, and the air discharged through the indoor air discharge port 4121 is dehumidified in two stages, so that the efficiency of dehumidification is very high. .

FIG. 15 illustrates a wet air diagram of indoor suction air RA and outdoor suction air OA by the operation of the heat recovery device of FIG. 13.

In the winter dehumidification mode, the heat pump 200 is driven as shown in FIG. 8 so that the second heat exchanger 220 is driven to the evaporator, and the first heat exchanger 210 is driven to the condenser.

Therefore, the air sucked through the indoor air inlet 4111 is heated by the first heat exchanger 210, and is primarily dried at high temperature, thereby exchanging heat and moisture with the outdoor air cooled through the heat exchanger 100. Then, it is discharged to the indoor air discharge port 4121. It can be seen that the relative humidity of the air SA discharged through the indoor air discharge port 421 is lower than that of the air RA sucked through the indoor air suction port 4111. In addition, the heating effect can be confirmed that the heating effect occurs. Therefore, there is an efficient moisture-absorption effect with warming, and even when there is a lot of indoor steam generation in winter, the risk of dew condensation can be reduced.

FIG. 16 is a conceptual view illustrating the operation of the heat recovery ventilator of FIG. 1 in a bypass mode.

Bypass mode is a mode for saving energy by supplying outdoor air to the room through the bypass flow path 117 bypassing the heating element, without separately heating and cooling during the season. The bypass mode may be implemented by driving the electric damper 116e to allow air to flow through the bypass flow path 117.

As described above, the heat recovery ventilator of the present invention, as well as the ventilation function, there is an advantage that can implement the heating and cooling function for each season.

In addition, there is an effect that the cooling and heating efficiency is increased as compared to the other air-conditioning device.

In addition, the dehumidification effect is also increased, and there is an advantage in that the cooling and heating efficiency decrease due to humid air can be prevented.

In addition to the dehumidification mode, it is possible to implement only the dehumidification function without ventilation, and by the bypass mode, it is possible to save energy for ventilation during the season.

Although the preferred embodiments of the present invention have been described above by way of example, the scope of the present invention is not limited to these specific embodiments, and may be appropriately changed within the scope described in the claims.

100: heat exchanger 110: heating element housing
111: device indoor air intake 113: device outdoor air intake
114: device indoor air discharge outlet 112: device outdoor air discharge outlet
120: heating element 210: first heat exchanger
220: second heat exchanger 230: refrigerant driving device
200: heat pump 4111: indoor air intake
4110: indoor air suction passage 4121: indoor air discharge port
4120: indoor air discharge passage 4131; outdoor air intake
4130: outdoor air suction flow path 4141: outdoor air discharge port
4140: outdoor air discharge passage 4200: first flow path connecting device
4300: second flow path connecting device 4400: third flow path connecting device
4500: 4th flow path connection device 4700: 6th flow path connection device

Claims (3)

An electric heat exchanger housing each having an element indoor air intake port, an element outdoor air intake port, an element indoor air outlet port, and an element outdoor air outlet port; A total heat exchanger including a heat transfer element housed in the heat exchanger housing so that the device outdoor air intake port and the device discharge air path communicating with the device indoor air discharge port connect with each other to exchange heat and moisture;
It is provided outside the housing, the first heat exchanger and the second heat exchanger is provided, and drives the refrigerant between the first heat exchanger and the second heat exchanger, the first heat exchanger and the second heat exchanger evaporator or A heat pump including a refrigerant driving device selectively converting the condenser into a condenser; And
An indoor air intake passage formed with an indoor air intake port communicating with an interior at one end thereof, an indoor air discharge passage formed with an indoor air discharge port communicated with the interior at one end thereof, and an outdoor air intake passage formed with an outdoor air intake port formed at one end thereof connected with the outdoors; A flow path device including an outdoor air discharge passage formed at one end thereof with an outdoor air discharge port communicating with the outdoors;
Including,
The flow path device,
A first flow path for connecting the other end of the indoor air suction flow path to the element indoor air intake port and selectively connecting the other end of the indoor air suction flow path to any one of an intake port of the first heat exchanger and the device indoor air intake port; A first flow path connecting device including a device;
A second flow path switching connecting the other end of the outdoor air suction flow path to the device outdoor air intake port and selectively connecting the other end of the outdoor air suction flow path to either the inlet port of the second heat exchanger and the device outdoor air suction port; A second flow path connecting device including a device;
A third connecting the discharge port of the first heat exchanger to the other end of the outdoor air discharge flow path and selectively connecting the discharge port of the first heat exchanger to the other end of the outdoor air discharge flow path and the element indoor air suction port; A third flow path connecting device including a flow path switching device;
A fourth flow path for connecting the element outdoor air discharge port to a suction port of the first heat exchanger, and selectively connecting the element outdoor air discharge port to one of a suction port of the first heat exchanger and the other end of the indoor air discharge channel A fourth flow path connecting device including a device;
A fifth flow path for connecting the device indoor air discharge port to a suction port of the second heat exchanger, and selectively connecting the device indoor air discharge port to one of a suction port of the second heat exchanger and the other end of the outdoor air discharge flow path; A fifth flow path connecting device including a device; And
A sixth connecting the discharge port of the second heat exchanger to the other end of the indoor air discharge flow path and selectively connecting the discharge port of the second heat exchanger to the other end of the indoor air discharge flow path and the element outdoor air suction port; A sixth flow path connecting device including a flow path switching device;
Heat recovery ventilator comprising a.
delete The method of claim 1,
The total heat exchanger,
A bypass flow passage bypassing the element suction path and connecting the element indoor air suction port and the element outdoor air discharge port; And
A bypass flow path connecting device for converting the air sucked into the device indoor air suction port to pass through any one of the device suction flow path and the bypass flow path;
Heat recovery ventilator characterized in that it further comprises.

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