JP2015064171A - Dehumidification and ventilation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform dehumidification in which indoor temperature does not increase while performing ventilation during high humidity time by solving the problem in which, when introducing outdoor air into a room by ventilation at high humidity time during a rainy season and the like, the outdoor humidity comes into the room together and it causes mold and the like, and when using a conventional reheating dehumidification method by using a refrigeration cycle for removing such humidity, blowout air temperature after dehumidification increases, and indoor temperature also increases.SOLUTION: When introducing outdoor air into a room by ventilation, the air is supplied into the room after dehumidification; however, as a path for supplying the outdoor air into the room by cooling and dehumidifying it and a path for radiating heat to the indoor air and exhausting it to the outside of the room are separated, dehumidified air can be introduced into the room without increasing the indoor temperature. Furthermore, by using in combination with a heat exchanger unit, more comfortable dehumidification and ventilation can be performed.

Description

  The present invention relates to a dehumidifying and ventilating apparatus that performs ventilation and dehumidification of a living space.

  In a conventional dehumidifying and ventilating apparatus that switches between dehumidification of a living space and ventilation of a house, the temperature in the living space rises due to exhaust heat from the refrigeration cycle when dehumidifying (see, for example, Patent Document 1).

  That is, in the dehumidification ventilator disclosed in Patent Document 1, when performing dehumidification, a dehumidification air passage that returns the air to the room again through an evaporator (cooler) and a condenser (heater), and the indoor air as it is outdoors. It is the structure of switching to the ventilation air path exhausted in the air. Since the evaporator and the condenser constitute one refrigeration cycle, the air supplied to the room is always heated (passed through the condenser) after being cooled (after passing through the evaporator).

JP 59-24127 A

  In such a conventional dehumidifying ventilator, when dehumidifying, since cooling (evaporator) and heating (condenser) are performed, the temperature of the blown air after dehumidification rises, so the indoor humidity can be lowered. However, there is a problem that indoor temperature rises at the same time. Further, when ventilating, when the outdoor air is introduced indoors by ventilation in the case of high humidity such as in the rainy season, the outdoor moisture also enters the indoors, which causes mold and the like. Therefore, an object of the present invention is to perform dehumidification that does not increase the indoor temperature while ventilating outdoors when the humidity is high.

  In order to achieve the above object, the present invention provides an exhaust blower that sucks indoor air and exhausts it to the outside, an exhaust air passage through which the air exhausts outside, and a supply air that sucks outdoor air and supplies it to the room. An air blower, a supply air passage through which air is supplied to the room, and a refrigerant circuit that forms a refrigeration cycle by connecting the compressor, the first heat exchanger, the expansion mechanism, and the second heat exchanger in this order by piping. The first heat exchanger is provided in the exhaust air passage, and the second heat exchanger is provided in the air supply air passage.

  By this means, the air introduced into the room in the second heat exchanger is cooled and dehumidified, and the refrigerant dissipates heat to the air discharged from the room to the outside in the first heat exchanger, so that the air is introduced into the room during ventilation. A dehumidifying ventilator that can dehumidify air without increasing its temperature is obtained.

  According to the present invention, the air introduced into the room is cooled and dehumidified, and the refrigerant can dissipate heat to the air discharged to the outside, so that the air introduced into the room is dehumidified without increasing the temperature when ventilating. Can provide a dehumidifying ventilator that can

1 is a schematic configuration diagram of a dehumidifying ventilator according to Embodiment 1 of the present invention. Connection diagram of the dehumidification ventilator and heat exchanger unit Schematic block diagram of the dehumidification ventilation apparatus in Embodiment 2 of this invention Connection diagram of the dehumidification ventilator and heat exchanger unit

  The dehumidifying ventilator according to claim 1 of the present invention sucks indoor air and exhausts it to the outside of the room, an exhaust air passage through which air is exhausted to the outside, and sucks outdoor air and supplies it to the room. A supply air blower, a supply air passage through which air is supplied to the room, a refrigerant circuit that forms a refrigeration cycle by connecting the compressor, the first heat exchanger, the expansion mechanism, and the second heat exchanger in this order by piping The first heat exchanger is provided in the exhaust air passage, the second heat exchanger is provided in the air supply air passage, and cools air introduced into the room in the second heat exchanger. In the first heat exchanger, the refrigerant releases heat to the air discharged from the room to the outside in the first heat exchanger, thereby dehumidifying the air introduced into the room during ventilation without increasing the temperature.

  In addition, the main body of the box is provided, and the exhaust air passage and the air supply air passage are arranged in the main body with an air passage partition plate interposed therebetween, and the air introduced into the room in the second heat exchanger Integrated dehumidification ventilation device that dehumidifies the air introduced into the room at the time of ventilation without increasing the temperature by cooling and dehumidifying the refrigerant and radiating the refrigerant to the air discharged from the room to the outside in the first heat exchanger It becomes.

  In addition, the main body includes a cross air passage that guides indoor air to the supply air passage and guides outdoor air to the exhaust air passage, and air passage switching means that switches conduction to the cross air passage. Otherwise, the air exhausted from the room to the outside is heated by condensing the internal refrigerant when passing through the first heat exchanger, and the air supplied to the room from the outside passes through the second heat exchanger. When passing through, the internal refrigerant is evaporated and cooled and dehumidified, and when passing through the cross air passage, the outdoor air is warmed through the first heat exchanger and exhausted to the outside again. Is passed through the second heat exchanger, cooled and dehumidified, and then supplied again into the room. By switching the air path by the air path switching means, the air in the room is switched in the second heat exchanger. In the first heat exchanger to be circulated after cooling and dehumidifying By discharging again to the outdoor and radiated to al inhaled air, an effect that can circulate cooling dehumidifying room air without ventilation.

  In addition, by providing a heat exchange element that performs total heat exchange between the air passing through the supply air path and the exhaust air path, heat exchange and dehumidification can be performed by both the heat exchange element and the refrigeration cycle. Has an effect.

  Hereinafter, embodiments of the present invention will be described with reference to FIGS.

(Embodiment 1)
FIG. 1 is an air path configuration diagram and a refrigerant circuit diagram which are the basis of a dehumidifying ventilator.

  The main body 1 is a box-shaped housing and includes four openings. One of the openings includes an intake adapter 3 as an intake port for sucking outdoor air into the main body 1. The other one of the openings includes an air supply adapter 4 that supplies the sucked outdoor air into the room. Another one of the openings includes a ventilation adapter 6 that sucks indoor air into the main body 1. The other one of the openings includes an exhaust adapter 7 that sends indoor air to the outside. The main body 1 also includes an air supply blower 2 that sucks outdoor air and blows it out indoors, and an exhaust blower 5 that sucks indoor air and blows it out outdoors. In the main body 1, an air supply air passage 14 is formed in which outdoor air is communicated from the intake adapter 3 to the air supply adapter 4 by driving the air supply blower 2. The main body 1 also has an exhaust air passage 13 through which indoor air communicates from the ventilation adapter 6 to the exhaust adapter 7 by driving the exhaust blower 5. The inside of the main body 1 is divided into two by an air passage partition plate 12, and an air supply air passage 14 is arranged on one side and an exhaust air passage 13 is arranged on the other side. That is, the supply air passage 14 and the exhaust air passage 13 are provided with the air passage partition plate 12 interposed therebetween.

  Further, the main body 1 is provided with a refrigerant circuit in which the refrigerant is circulated in the order of the compressor 8, the first heat exchanger 9, the expansion mechanism 10, and the second heat exchanger 11. The compressor 8 compresses the refrigerant circulating in the refrigerant circuit. The first heat exchanger 9 exchanges heat between the air blown by the exhaust blower 5 and the refrigerant. The expansion mechanism 10 expands the refrigerant circulating in the refrigerant circuit. The second heat exchanger 11 exchanges heat between the air blown by the air supply blower 2 and the refrigerant.

  This dehumidifying ventilator drives the air supply blower 2 to pass the outdoor air sucked from the intake adapter 3 through the second heat exchanger 11. Since the liquid refrigerant flows into the second heat exchanger 11, the air (outdoor) supplied after heat exchange is dehumidified and cooled, and then supplied to the indoor space through the air supply adapter 4. Further, the exhaust blower 5 is driven to pass the indoor air sucked from the ventilation adapter 6 through the first heat exchanger 9. Since the gaseous refrigerant flows into the first heat exchanger 9, the heat is exchanged to the air (in the room) to be exhausted through heat exchange, and then exhausted to the outside through the exhaust adapter 7.

  In the above configuration, the air introduced from the outside during ventilation is dehumidified and cooled and then supplied to the room, and the exhaust heat of the refrigeration cycle can be exhausted outside the room on the air exhausted from the room. Ventilation and dehumidification can be performed without raising the temperature of the room, and indoor comfort can be improved.

  FIG. 2 shows a connection between the heat exchanger unit 15 and the main body 1 of the dehumidifying ventilator shown in FIG.

  The heat exchanger unit 15 is provided with an SA adapter 16, an EA adapter 18, an OA adapter 20, and an RA adapter 21 at four openings of the casing. An air supply passage 14b from the OA adapter 20 to the SA adapter 16 and an exhaust air passage 13b from the RA adapter 21 to the EA adapter 18 are formed. The heat exchanger element 22 is disposed at a position where the supply air passage 14b and the exhaust air passage 13b intersect. The heat exchange element 22 is configured by stacking thin heat transfer plates and exchanging heat between alternately passing air (air to be supplied and air to be exhausted).

  Then, the SA adapter 16 of the heat exchanger unit 15 and the intake adapter 3 of the main body 1 are connected by a duct 17. Further, the EA adapter 18 of the heat exchanger unit 15 and the ventilation adapter 6 of the main body 1 are connected by a duct 19.

  In the heat exchanger unit 15, the outdoor air sucked from the OA adapter 20 (air passing through the supply air passage 14b) and the indoor air sucked from the RA adapter 21 (air passing through the exhaust air passage 13b) are heated. Heat is exchanged in the alternating element 22. Then, air introduced from outside the room blown out from the SA adapter 16 (air passing through the supply air passage 14 b) is introduced from the intake adapter 3 to the main body 1 through the duct 17. Then, after passing through the second heat exchanger 11 and further exchanging heat and dehumidifying and cooling in the air supply air passage 14, the air is supplied to the indoor space through the air supply adapter 4. On the other hand, the exhaust air heat exchanged in the heat exchanger unit 15 (air passing through the exhaust air passage 13 b) is blown out from the EA adapter 18 and introduced into the main body 1 from the ventilation adapter 6 through the duct 19. In the exhaust air passage 13, after passing through the first heat exchanger 9 to exchange heat and dissipate heat, the exhaust air passage 13 can be exhausted outside through the exhaust adapter 7.

  In the above configuration, the temperature and humidity of the air supplied to the room can be further reduced and the indoor comfort can be improved as compared with the heat exchange and ventilation between the outdoor air and the room air using only the heat exchanger unit 15. Can do.

(Embodiment 2)
3, the same components as those in FIG. 1 are denoted by the same reference numerals, and detailed description thereof is omitted.

  As shown in FIG. 3, the dehumidifying ventilator according to the second embodiment includes an intersecting air passage 23 that can cross the wind flow in the main body 1 with respect to the dehumidifying ventilator according to the first embodiment. An air path switching means 24 for switching the air path is provided.

  When the air passage switching means 24 is opened, that is, when the supply air passage 14 and the exhaust air passage 13 do not pass through the cross air passage 23, the air passing through the air supply air passage 14 is the same as in the first embodiment. Passes through the second heat exchanger 11 and is cooled and dehumidified. The air passing through the exhaust air passage 13 passes through the first heat exchanger 9 and receives the heat radiation and is exhausted.

  On the other hand, when the air path switching means 24 is closed, that is, when passing through the cross air path 23, as shown in FIG. 4, it passes through the heat radiation air path 13c and the circulation air path 14c. At this time, the indoor air sucked from the ventilation adapter 6 by driving the air supply blower 2 passes through the second heat exchanger 11 (circulation air passage 14c). And after exchanging heat with the 2nd heat exchanger 11 and carrying out dehumidification cooling, it is again supplied to indoor space through the air supply adapter 4. FIG. Further, by driving the exhaust blower 5, the outdoor air sucked from the intake adapter 3 passes through the first heat exchanger 9 (radiating air passage 13c). And after heat-exchanging and radiating with the 1st heat exchanger 9, it exhausts to the outdoor again through the exhaust adapter 7. FIG. In the air path switching means 24 in FIG. 3, the solid line indicates a closed state, and the dotted line indicates an open state.

  In the above configuration, the room air can be circulated and dehumidified without ventilation, and the exhaust heat of the refrigeration cycle can be exhausted to the outside using the air introduced into the main body 1 from the outside, so that the temperature is raised. The indoor air can be circulated and dehumidified without any problems, and the comfort in the room can be improved.

  FIG. 4 shows a connection between the heat exchanger unit 15 and the dehumidifying ventilator shown in FIG.

  As described in the first embodiment (FIG. 2), the heat exchanger unit 15 is provided with the SA adapter 16, the EA adapter 18, the OA adapter 20, and the RA adapter 21 in the four openings of the casing. It has been. An air supply passage 14b from the OA adapter 20 to the SA adapter 16 and an exhaust air passage 13b from the RA adapter 21 to the EA adapter 18 are formed. The heat exchanger element 22 is disposed at a position where the supply air passage 14b and the exhaust air passage 13b intersect. The heat exchange element 22 is configured by stacking thin heat transfer plates and exchanging heat between alternately passing air (air to be supplied and air to be exhausted).

  Furthermore, in the second embodiment, the heat exchanger unit 15 includes a bypass air passage 26 that does not pass through the heat exchanger element 22 and communicates from the RA adapter 21 to the EA adapter 18. A bypass damper 25 is provided to connect the bypass air passage 26 and the space where the RA adapter 21 is provided.

  As in the first embodiment, the heat exchanger unit 15 connects the SA adapter 16 and the intake adapter 3 of the main body 1 with a duct 17, and connects the EA adapter 18 and the ventilation adapter 6 of the main body 1 with a duct 19. It is connected.

  A characteristic part of the present embodiment is a case where the bypass damper 25 of the heat exchanger unit 15 is opened and the air path switching means 24 in the main body 1 is closed (when the cross air path 23 is passed). At this time, the outdoor air sucked from the OA adapter 20 of the heat exchanger unit 15 is blown out from the SA adapter 16 of the heat exchanger unit 15 without exchanging heat with the indoor air (supply air passage 14b). And it introduce | transduces into the main body 1 from the intake adapter 3 through the duct 17, and heat-exchanges and thermally radiates by letting the 1st heat exchanger 9 pass. Then, the air is again exhausted outside through the exhaust adapter 7. In this case, the air passes through the supply air passage 14b, but is actually exhausted by receiving heat radiation from the first heat exchanger 9.

  On the other hand, the indoor air sucked from the RA adapter 21 of the heat exchanger unit 15 is blown out from the EA adapter 18 of the heat exchanger unit 15 through the bypass air passage 26 without exchanging heat with the outdoor air. And it introduce | transduces into the main body 1 from the ventilation adapter 6 through the duct 19, heat exchange is carried out by letting the 2nd heat exchanger 11 pass, and dehumidification cooling is carried out. Then, the air is again supplied to the indoor space through the air supply adapter 4.

  In the above configuration, the indoor air can be circulated and dehumidified when ventilation is not required, and the exhaust heat of the refrigeration cycle can be exhausted outside using the air introduced into the main body 1 from the outside. Circulating dehumidification of room air can be performed without increasing the temperature, and the comfort in the room can be improved.

  The contents described above are only described for one mode for carrying out the invention, and the present invention is not limited to the above embodiment.

  For example, in the present embodiment, the supply blower 2 and the exhaust blower 5 are arranged downstream of the second heat exchanger 11 and the first heat exchanger 9, respectively. As long as the position allows the air to flow through the exchanger, it may be disposed upstream of the second heat exchanger 11 and the first heat exchanger 9, and there is no difference in the operational effects.

  For example, in the present embodiment, the heat exchanger unit 15 and the main body 1 are connected to each other by the duct 17 and the duct 19, but the heat exchange element 22 may be built in the main body 1, and the operational effects are different. Does not occur.

  The present invention can realize a dehumidifying ventilator that dehumidifies moisture that enters the room from the outside with ventilation, and does not increase the temperature of the room at that time, and is more comfortable when used in combination with a heat exchanger. A dehumidifying and ventilating device capable of dehumidifying ventilation can be realized.

  Further, when ventilation is not required, indoor air can be circulated and dehumidified, and a dehumidifying and ventilating apparatus that does not increase the indoor temperature at that time can be realized.

DESCRIPTION OF SYMBOLS 1 Main body 2 Supply air blower 3 Intake adapter 4 Supply air adapter 5 Exhaust air blower 6 Ventilation adapter 7 Exhaust adapter 8 Compressor 9 First heat exchanger 10 Expansion mechanism 11 Second heat exchanger 12 Air path partition plate 13 Exhaust air path 13c Radiation air passage 14 Supply air passage 14c Circulation air passage 15 Heat exchanger unit 16 SA adapter 17 Duct 18 EA adapter 19 Duct 20 OA adapter 21 RA adapter 22 Heat exchanger element 23 Cross air passage 24 Air passage switching means 25 Bypass damper 26 Bypass Wind path

Claims (4)

An exhaust blower that sucks indoor air and exhausts it outside the room;
An exhaust air passage through which air is exhausted to the outside;
An air supply blower that sucks outdoor air and supplies it into the room;
A supply air passage through which air is supplied into the room;
A refrigerant circuit comprising a compressor, a first heat exchanger, an expansion mechanism, and a second heat exchanger connected in a pipe in this order to constitute a refrigeration cycle,
The first heat exchanger is provided in the exhaust air passage;
The second heat exchanger is provided in the supply air path,
When the air exhausted to the outside passes through the first heat exchanger, it is heated by condensing the refrigerant inside,
A dehumidifying and ventilating device that cools and dehumidifies the air supplied to the room by evaporating the internal refrigerant when passing through the second heat exchanger. The dehumidification ventilation apparatus of Claim 1 which has a box-shaped main body and has arrange | positioned the said exhaust air path and the said air supply air path on both sides of the air-path partition plate in this main body. A cross air passage that guides indoor air into the supply air passage in the main body and guides outdoor air to the exhaust air passage,
Provided with air path switching means for switching conduction to this cross air path,
If the cross air passage is not passed, the air exhausted from the room to the outside is heated by condensing the refrigerant inside when passing through the first heat exchanger, and the air supplied from the outside to the room is the first. When passing through the two heat exchangers, the internal refrigerant is evaporated and cooled and dehumidified,
When passing through the cross air passage, the outdoor air passes through the first heat exchanger and is warmed and exhausted to the outside again, and the indoor air passes through the second heat exchanger and is cooled and dehumidified. The dehumidifying and ventilating apparatus according to claim 2, wherein the air is supplied again into the room. The dehumidification ventilation apparatus as described in any one of Claims 1-3 provided with the heat exchanger element which performs a total heat exchange between the air which passes through the said supply air path and the said exhaust air path.

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