JP5261988B2 - Ventilation air conditioner - Google Patents

Abstract

Provided is a ventilating and air conditioning apparatus having a temperature adjusting function by heat exchange and improved cooling/heating efficiency. A ventilating and air conditioning apparatus (1A) is provided with a heat exchanging element (3A) for exchanging heat between air passing through an isolated first heat exchanging air path (30a) and air passing through a second heat exchanging air path (30b); a heat pump air conditioning apparatus (2A) which performs air conditioning; a heat exchanging air feeding path (5A) which makes the first heat exchanging air path (30a) of the heat exchanging element (3A) communicate with a second heat exchanging air path (30b) through the heat pump air conditioning apparatus (2A); a non heat exchanging air feeding path (5B) which bypasses the first heat exchanging air path (30a); and an air path opening/closing damper (54) which performs switching between heat exchanging air feeding path (5A) and the non heat exchanging air feeding path (5B).

Description

  The present invention relates to a ventilation air conditioner having a dehumidifying function and an air conditioning function.

  Conventionally, the refrigerant is circulated between the indoor unit and the outdoor unit, and the heat exchanger on the indoor unit side functions as a condenser to heat the air by the heat radiation action of the refrigerant and to exchange heat on the indoor unit side. A heat pump type air conditioner using a refrigeration cycle in which air is cooled by an endothermic action of a refrigerant by causing the chamber to function as an evaporator has been proposed.

  In such an air conditioner, it is possible to perform dehumidification by condensing moisture in the air passing through the evaporator, and it is necessary to lower the temperature of the air in order to increase the dehumidification amount. For this reason, there existed a problem that indoor temperature fell too much, and the problem that dew condensation generate | occur | produces in an air supply opening | mouth. Thus, in order to solve the problem that the supply air temperature is too low, the conventional air conditioner is generally provided with a configuration for reheating, but there is a problem that the apparatus becomes complicated.

  Therefore, an air conditioner has been proposed in which a heat pump type air conditioner and a heat exchange element are combined so that the temperature of air supplied to the room can be adjusted (see, for example, Patent Document 1).

  In a conventional air conditioner that combines an air conditioner and a heat exchange element, an air path that bypasses the heat exchange element and a damper that adjusts the air volume of the bypass air path are provided so that temperature adjustment and the like can be performed.

Japanese Patent No. 2631694

  However, in the conventional air conditioner, since air passes through both the heat exchange element and the bypass air passage, a predetermined amount of air harmonized by the air conditioner is exchanged with the outside air, so that The air temperature is affected by the temperature of the outside air due to heat exchange, and there is a problem that the efficiency of air conditioning is lowered.

  The present invention has been made to solve such a problem, and an object thereof is to provide a ventilation air conditioner having a temperature adjustment function by heat exchange and improving the efficiency of air conditioning.

To solve the problems described above, ventilating air-conditioning system of the present invention, a first heat exchange air path and the second heat exchange air passage is alternately stacked across the partition walls to one another is isolated, the first heat A heat exchange element that exchanges heat between air passing through the exchange air passage and air passing through the second heat exchange air passage, an air conditioner that performs air conditioning, a first intake port, and a second intake air. The inlet of the outside air in which the inlets are arranged in parallel, the first inlet and the suction side of the first heat exchange air passage of the heat exchange element are communicated, and the outlet side of the first heat exchange air passage is connected to the air conditioner A heat exchange air supply passage in which the second heat exchange air passage is communicated with the suction side of the second heat exchange air passage and the blowout side of the second heat exchange air passage is communicated with the air supply port, and the first heat exchange air of the heat exchange element bypassing the road, and a non-heat exchange supply air flow path second inlet which communicates with the upstream heat exchanger supply air flow path from the air conditioner, the heat exchanger supply air flow path and the non-thermal exchange supply air flow The opening and closing a wind passage opening and closing means for switching the air passage, intake is a heat exchange element in which the first heat exchange air path and the second heat exchange air path are stacked, the first heat exchange air The second intake is provided on both sides of the first intake port communicating with the suction side of the first heat exchange air passage where the portion opposite the passage is open and the portion opposite the second heat exchange air passage is blocked. The inlets are arranged in parallel, and the non-heat exchange air supply passage is formed on both sides of the heat exchange element along the stacking direction of the first heat exchange air passage and the second heat exchange air passage. The formed non-heat exchange air supply air passage communicates with a second intake air juxtaposed on both sides of the first intake air , and the air passage opening / closing means includes a first damper that opens and closes the first air intake port. The second damper that opens and closes the second intake port is provided in the same shaft portion with different phases, and the first damper and the second damper are operated by the rotation of the shaft portion, so that the first intake Wherein the opening and closing of the mouth and the second inlet is switched. Here, the opening / closing of the air passage in the air passage opening / closing means includes adjustment of the opening degree of the air passage.

  In the ventilation air conditioner of the present invention, the air path is switched according to the operation mode, and the air passing through the heat exchange air supply air path is cooled by an air conditioner, so that moisture in the air is condensed to reduce the humidity. Air is supplied and the room is dehumidified. Further, the room is cooled by cooling the air passing through the non-heat exchange supply air passage with an air conditioner and supplying the air.

According to the ventilation air conditioner of the present invention, the dehumidification function by the heat exchange element and the air conditioner enables dehumidification without excessively reducing the supply air temperature, and by switching the air path without passing the heat exchange element. Since air-conditioning is possible, air that has been air-conditioned can be supplied without being affected by the temperature of the outside air due to heat exchange, and the efficiency of air-conditioning can be improved. Moreover, since the first damper and the second damper are operated by the rotation of the shaft portion, and the opening and closing of the first intake port and the second intake port are switched, the two intake ports can be opened by one motor. The air path can be switched by opening and closing, and a configuration for switching the air path at low cost can be realized.

  Embodiments of a ventilation air conditioner of the present invention will be described below with reference to the drawings.

<Configuration Example of Ventilation Air Conditioner of First Embodiment>
FIG. 1 is a configuration diagram illustrating an example of a ventilation air conditioner according to the first embodiment. FIG. 1A is a front view illustrating an internal configuration of the ventilation air conditioning apparatus according to the first embodiment. b) is a side view showing the internal configuration of the ventilation air conditioner of the first embodiment.

  FIG. 2 is an exploded perspective view of the ventilation air conditioner of the first embodiment, and FIG. 3 is an air path configuration diagram of the ventilation air conditioner of the first embodiment.

  The ventilation air conditioner 1A of the first embodiment is harmonized by a heat pump air conditioner 2A as an air conditioner that cools and heats the air, and air temperature adjustment and heat pump air conditioner 2A harmonized by the heat pump air conditioner 2A. It has a heat exchange element 3A for dehumidifying the air, etc., and has an air-conditioning ventilation function that takes in outside air and supplies the air in an air-conditioned room.

  First, with reference to FIG. 3 etc., the structure of 2 A of heat pump air conditioners is demonstrated.

  The heat pump air conditioner 2A includes a pipe 20 through which the refrigerant flows, a first heat exchanger 21 that performs heat exchange between the air supplied to the room and the refrigerant, and heat between the air that is discharged to the outside and the refrigerant. A second heat exchanger 22 that performs exchange is provided.

  The heat pump air conditioner 2A includes a compressor 23 that compresses the refrigerant that flows through the pipe 20, an expansion valve 24 that decompresses the refrigerant that flows through the pipe 20, and a four-way valve 25 that switches the direction in which the refrigerant flows.

  In the heat pump air conditioner 2A, the second heat exchanger 22, the compressor 23, the expansion valve 24, the four-way valve 25, a substrate (not shown), and the like are unitized to form an outdoor unit 26. A first heat exchanger 21 disposed outside the machine unit 26 is connected via a pipe 20.

  Moreover, the 1st heat exchanger 21 is integrated in the housing | casings 27a and 27b which comprise some heat exchange air supply paths 5A, for example, as shown in FIG. The casings 27a and 27b form an air path in which air sucked from one opening 27c formed on the upper surface of the casing 27a passes through the first heat exchanger 21 and is blown out from the other opening 27d. To do.

Here, as described above, the air conditioner may have a configuration in which the cooling uses the refrigerant and the heating uses the hot water, in addition to the configuration in which the cooling and heating use the refrigerant.

  Next, the configuration of the heat exchange element 3A will be described with reference to the drawings.

  The heat exchange element 3A includes a first heat exchange air passage 30a through which air passes and a second heat exchange air passage 30b through which air passes and is isolated from the first heat exchange air passage 30a. Heat exchange is performed between the air passing through the air passage 30a and the air passing through the second heat exchange air passage 30b.

  4 and 5 are configuration diagrams showing an example of an embodiment of the heat exchange element. FIG. 4A is a front view of the heat exchange element 3A, and FIG. 4B is a left side of the heat exchange element 3A. FIG. 4C is a right side view of the heat exchange element 3A. 5A is a cross-sectional view taken along the line AA of FIG. 4A showing the internal configuration of the heat exchange element 3A, and FIG. 5B is a cross-sectional view of the main part of the heat exchange element 3A.

  In the heat exchange element 3A, the first heat exchange air passage 30a and the second heat exchange air passage 30b are alternately stacked with the partition wall 31 interposed therebetween. In the first heat exchange air passage 30a, the partition walls 31 are partitioned by the air passage forming plate 32a, and a plurality of parallel air passages are linearly formed.

  In addition, the second heat exchange air passage 30b is partitioned between the partition walls 31 by an air passage forming plate 32b, and a plurality of parallel air passages are here oriented in parallel with the first heat exchange air passage 30a. It is formed in a straight line.

  The partition wall 31 and the air path forming plates 32a and 32b are made of a metal material having good thermal conductivity such as aluminum or copper. The heat exchange element 3A may be configured to include a plurality of slits in the air passage forming plates 32a and 32b.

  The heat exchange element 3A includes a suction port 35a of the first heat exchange air passage 30a and an air outlet 36b of the second heat exchange air passage 30b on one end side, and includes the first heat exchange air passage 30a. The air outlet 36a and the suction port 35b of the second heat exchange air passage 30b are provided on the other end side.

  The surface of the heat exchange element 3A on which the suction port 35a is formed is open at a portion facing the first heat exchange air passage 30a, and is closed at a portion facing the second heat exchange air passage 30b. The mouth 35a communicates with the first heat exchange air passage 30a.

  Further, the surface on which the air outlet 36b is formed is open at a portion facing the second heat exchange air passage 30b, is closed at a portion facing the first heat exchange air passage 30a, and the air outlet 36b. The second heat exchange air passage 30b communicates.

  The surface of the heat exchange element 3A on which the air outlet 36a is formed is opened at a portion facing the first heat exchange air passage 30a, and is closed at a portion facing the second heat exchange air passage 30b. The outlet 36a communicates with the first heat exchange air passage 30a.

  Further, the surface on which the suction port 35b is formed is open at a portion facing the second heat exchange air passage 30b, is closed at a portion facing the first heat exchange air passage 30a, and the suction port 35b. The second heat exchange air passage 30b communicates.

  Thereby, in the heat exchange element 3A, the air sucked from the suction port 35a blows out from the blower outlet 36a through the first heat exchange air passage 30a. Moreover, the air sucked from the suction port 35b blows out from the blower outlet 36b through the second heat exchange air passage 30b.

  In the heat exchange element 3A, the air passing through the first heat exchange air passage 30a and the air passing through the second heat exchange air passage 30b are opposed to each other, and the first heat exchange air passage 30a and the second heat exchange air passage are provided. Since 30b is partitioned by the partition wall 31, heat exchange is performed between the air passing through the first heat exchange air passage 30a and the air passing through the second heat exchange air passage 30b.

  Thus, heat exchange efficiency improves by making the flow of the air exchanged heat into a counter flow.

  As shown in FIG. 2, for example, the heat exchange element 3A is partitioned into a predetermined shape, and is put in heat insulating materials 37a and 37b constituting a part of the heat exchange air supply passage 5A and the non-heat exchange supply air passage 5B. Thus, it is incorporated into the casings 38a and 38b.

  The heat insulating material 37b and the casing 38b include an opening (not shown) that communicates with a section that forms the air outlet 36a of the first heat exchange air passage 30a and the non-heat exchange air supply air passage 5B of the heat exchange element 3A. An opening (not shown) communicating with the suction port 35b of the heat exchange air passage 30b is formed on the lower surface.

As a result, when the casings 38a and 38b are attached to the upper portions of the casings 27a and 27b, the heat exchange element 3A incorporated in the heat insulating materials 37a and 37b has the outlet 36a of the first heat exchange air passage 30a. through one communication with the opening 27c of the first heat exchanger 21 is integrated housing 27a, the suction port 35b of the second heat exchange air passage 30b is communicated with the other opening 27d of the housing 27a . Further, the non-heat exchange air supply path 5B communicates with one opening 27c of the casing 27a .

  Further, the housing 38a and the heat insulating material 37a are formed with openings 38c and 37c on the upper surface thereof, which communicate with the air outlet 36b of the second heat exchange air passage 30b of the heat exchange element 3A.

  As shown in FIG. 2, the heat exchange element 3A incorporated in the heat insulating materials 37a and 37b is sucked into the first heat exchange air passage 30a by partitioning the suction port 35a and the blowout port 36b on one end side. The air blown out from the second heat exchange air passage 30b is not mixed.

  Similarly, the air outlet 36a and the suction port 35b are partitioned on the other end side of the heat exchange element 3A, so that the air blown out from the first heat exchange air passage 30a can be used as a shortcut to the first heat exchanger 21. 2 is not sucked into the second heat exchange air passage 30b.

  Next, with reference to each figure, the structure of the air path in 1 A of ventilation air conditioners is demonstrated.

  The ventilation air conditioner 1A includes an intake 51 in which a first intake 51a and a second intake 51b are arranged in parallel, and supplies outside air OA taken from the first intake 51a through the heat exchange element 3A. A heat exchange air supply passage 5A for blowing out as air supply SA from the mouth 52 is provided. Further, the ventilation air conditioner 1A includes a non-heat exchange air supply passage 5B that bypasses the heat exchange element 3A from the outside air OA taken from the second intake port 51b.

  For example, as shown in FIG. 2, the intake 51 is configured by opening the front surface of a heat insulating material 37a in which the heat exchange element 3A is incorporated, and the second intake 51b is arranged in parallel on both sides of the first intake 51a. The

  The heat exchange air supply passage 5A allows the first intake port 51a and the suction port 35a of the first heat exchange air passage 30a of the heat exchange element 3A to communicate with each other. Further, the air outlet 36a of the first heat exchange air passage 30a is communicated with the suction port 35b of the second heat exchange air passage 30b through the first heat exchanger 21 of the heat pump air conditioner 2A. Further, the air outlet 36 b of the second heat exchange air passage 30 b is communicated with the air supply port 52.

  The non-heat exchange supply air passage 5B bypasses the first heat exchange air passage 30a of the heat exchange element 3A by air passages formed on both sides of the heat exchange element 3A, and heat pump air-conditioning the second intake port 51b The heat exchange air supply passage 5a upstream of the first heat exchanger 21 of the machine 2A is communicated.

  The ventilation air conditioner 1A sucks outside air OA from the first intake port 51a and the second intake port 51b in the heat exchange supply air passage 5A and the non-heat exchange supply air passage 5B and blows it out from the supply port 52. A fan unit 53 is provided.

  For example, as shown in FIG. 2, the blower fan unit 53 is incorporated in the casings 39 a and 39 b. The housing 39b has an opening 39c communicating with a suction port (not shown) of the blower fan unit 53 formed on the lower surface, and the blower fan unit 53 is built on top of the housings 38a and 38b in which the heat exchange element 3A is built. When the casings 39a and 39b are attached, the suction port of the blower fan unit 53 and the air outlet 36b of the second heat exchange air passage 30b of the heat exchange element 3A communicate with each other.

  In addition, the casings 39a and 39b have one or more air supply ports 52 formed by opening the upper surface of the housing 39a, and the air supply ports 52 are blown through a chamber 39d provided inside the housing 39b. It communicates with the fan unit 53. Furthermore, a duct joint 39e connected to an air supply duct (not shown) is attached to the air supply port 52.

  The ventilation air conditioner 1A covers and passes through both the heat exchange air supply passage 5A and the non-heat exchange supply air passage 5B, for example, both the first intake port 51a and the second intake port 51b as shown in FIG. In addition to the filter 40 that cleans the air, a decorative panel 41 having a louver or the like is provided.

  Further, the ventilation air conditioner 1A includes an air path opening / closing damper 54 that adjusts a distribution ratio of the sucked outside air OA to the heat exchange supply air path 5A and the non-heat exchange supply air path 5B. The air path opening / closing damper 54 is an example of air path opening / closing means, and in this example, the first intake port 51a communicating with the heat exchange air supply air passage 5A and the second intake port communicating with the non-heat exchange air supply air passage 5B. 51b is provided on both sides.

  FIG. 6 is a perspective view illustrating a configuration example of an air path opening / closing damper. The air path opening / closing damper 54 has second dampers 54b that open and close the second intake port 51b on both sides of the first damper 54a that opens and closes the first intake port 51a, and the first damper 54a and the first damper 54a. Two dampers 54b are provided on the same shaft portion 54c with different phases by 90 °.

  The first damper 54a and the second damper 54b are each composed of a plurality of plate-like members, and the plurality of dampers are linked by a gear or a link (not shown) attached to the shaft portion 54c of each damper.

  Accordingly, the first damper 54a and the second damper 54b are operated by the rotation of the shaft portion 54c, and the opening and closing of the first intake port 51a and the second intake port 51b are switched.

  That is, when the first intake 54a is fully opened by the first damper 54a, the phase of the second damper 54b is shifted by 90 °, and the second intake 51b is fully closed. On the other hand, when the second intake port 51b is fully opened by the second damper 54b, the first intake port 51a is fully closed by the first damper 54a.

  When the opening of the first damper 54a is gradually closed from the state where the first intake 51a is fully opened, the second damper 54b is in the state where the second intake 51b is fully closed. Gradually open from. On the other hand, when the opening of the second damper 54b is gradually closed from the state in which the second intake 51b is fully opened, the first damper 54a is in the state in which the first intake 51a is fully closed. Gradually open from.

  Accordingly, the operation of the first damper 54a can adjust the air volume of the air passing through the heat exchange air supply path 5A shown in FIG. 3 and the like from 100% to 0%, and the second damper 54b is connected to the first damper 54a. By interlocking, the air volume of the air passing through the non-heat exchange air supply path 5B can be adjusted from 0% to 100%.

  Therefore, depending on the opening degree of the first damper 54a and the second damper 54b, all the outside air OA passes through the first heat exchange air passage 30a of the heat exchange element 3A and the air passing through the second heat exchange air passage 30b. The air path configuration for exchanging heat between them, the air path configuration for not exchanging heat by the heat exchange element 3A through all the outside air OA through the non-heat exchange air supply path 5B, and a predetermined amount of the outside air OA for the heat exchange element 3A. It is possible to select an air passage configuration in which a predetermined amount of the outside air OA is exchanged through the first heat exchange air passage 30a and the remaining portion through the non-heat exchange air supply air passage 5B.

  In addition, since the air path can be switched by opening and closing the two intake ports with one motor, a configuration for switching the air path at low cost can be realized.

  Next, the configuration of dehumidification / humidification in the ventilation air conditioner 1A will be described with reference to the drawings.

  The ventilation air conditioner 1A includes a drain pan 60 as water recovery means below the heat exchange element 3A and the first heat exchanger 21 of the heat pump air conditioner 2A. In this example, the heat exchanging element 3A and the first heat exchanger 21 are arranged up and down with the heat exchanging element 3A with the air passing direction as the vertical direction, and below the first heat exchanger 21. A drain pan 60 is provided. Thereby, the dew condensation water generated by the heat exchange element 3A and the first heat exchanger 21 is dropped onto the drain pan 60 and collected.

  The drain pan 60 is attached to the inside of the casings 27a and 27b, and can collect the collected water from the drain pipe 61 to the outside.

  Moreover, 1 A of ventilation air conditioners are equipped with the watering apparatus 62 as a humidification means in the heat exchange air supply air path 5A downstream from the confluence | merging location of the non-heat exchange air supply air path 5B. The non-heat exchange air supply path 5B merges with the heat exchange supply air path 5A upstream from the first heat exchanger 21 of the heat pump air conditioner 2A. In this example, the second heat exchange of the heat exchange element 3A is performed. A nozzle for spraying mist-like mist is provided in the air passage between the suction port 35 b of the air passage 30 b and the first heat exchanger 21.

<Operation Example of Ventilation Air Conditioner of First Embodiment>
Next, with reference to each figure, operation | movement of 1 A of ventilation air conditioners of 1st Embodiment is demonstrated.

(1) Example of operation in dehumidification mode and clothes drying mode In the dehumidification mode and clothes drying mode, the first damper 54a is opened by the operation of the air path opening / closing damper 54 and communicated with the heat exchange air supply air path 5A. The inlet 51a is fully opened, and the second intake port 51b communicating with the non-heat exchange supply air passage 5B is fully closed by the second damper 54b, so that the entire amount of the outside air OA is reduced to the first temperature of the heat exchange element 3A. It supplies to the heat exchange air path 30a. In the following description, the total amount of outside air OA means a substantially total amount including substantially the entire amount.

  Further, the heat pump air conditioner 2A configures the refrigeration cycle by the four-way valve 25 and operates the compressor 23, thereby causing the first heat exchanger 21 to function as an evaporator, and the outside air by the heat absorption action of the refrigerant by the evaporator. Cool OA. At this time, the second heat exchanger 22 functions as a condenser and cools and liquefies the refrigerant.

  When the blower fan unit 53 is operated in the above state, the outside air OA is sucked from the first intake port 51a, and the entire amount of the outside air OA is supplied to the heat exchange air supply passage 5A.

  In the heat exchange air supply passage 5A, the outside air OA passes through the first heat exchange air passage 30a of the heat exchange element 3A, and the outside air OA that passes through the first heat exchange air passage 30a is the first heat of the heat pump air conditioner 2A. It passes through the exchanger 21. The outside air OA that has passed through the first heat exchanger 21 functioning as an evaporator of the refrigeration cycle returns to the heat exchange element 3A and passes through the second heat exchange air passage 30b.

  The outside air OA passes through the heat exchange element 3A, so that heat is exchanged with the air cooled by the heat pump air conditioner 2A, and the temperature is lowered.

  The air cooled by the heat pump air conditioner 2A is the outside air OA whose temperature has been lowered by heat exchange by the heat exchange element 3A. At this time, the first heat exchange is performed according to the temperature difference between the outside air OA passing through the first heat exchange air passage 30a of the heat exchange element 3A and the cooled outside air OA passing through the second heat exchange air passage 30b. The outside air OA passing through the air passage 30a becomes saturated due to a decrease in temperature, and moisture in the outside air OA passing through the first heat exchange air passage 30a is condensed to perform dehumidification.

  Further, the outside air OA passes through the first heat exchanger 21 functioning as an evaporator of the refrigeration cycle, and moisture is condensed and dehumidified. At this time, since the temperature of the outside air OA has been lowered before being introduced into the first heat exchanger 21, the relative humidity has increased, so that the cooling capacity of the heat pump air conditioner 2A is not increased, that is, the power consumption. The amount of dehumidification is increased without increasing the temperature, and the outside air OA having high temperature and medium humidity is made to be medium temperature and low humidity air in which the temperature decrease more than necessary is suppressed in summer.

  Then, the outside air OA that has become intermediate temperature and low humidity through the heat exchange element 3A and the heat pump air conditioner 2A is supplied into the room as an air supply SA from the air supply port 52.

  In addition, the dew condensation water which generate | occur | produced in 3 A of heat exchange elements and the 1st heat exchanger 21 is collect | recovered with the drain pan 60, and is drained outside.

  In the dehumidifying mode and the clothes drying mode, the air passage through which the outside air OA passes is switched to the air passage through the first heat exchanging air passage 30a of the heat exchanging element 3A. The room can be dehumidified without being overcooled, and the indoor relative humidity can be lowered to obtain coolness in summer or the like. Moreover, drying of clothing can be promoted by reducing the humidity in the room.

  Further, by performing dehumidification by the action of the heat exchange element 3A and the heat pump air conditioner 2A and collecting the dew condensation water with the drain pan 60, the occurrence of dew condensation at the air supply port 52 can be prevented. And even if it increases dehumidification amount, since it is not necessary to reheat air, a heater etc. are unnecessary and the complication of an apparatus structure can be prevented.

  In the dehumidifying mode, the second intake port 51b, which is fully closed, is gradually opened by the air passage opening / closing damper 54, so that heat exchange is performed according to the opening degree of the first damper 54a and the second damper 54b. It is possible to reduce the heat exchange efficiency in the element 3A and to adjust the temperature and humidity of the cold air blown out.

(2) Example of operation in cooling mode In the cooling mode, the second damper 54b is opened by the operation of the air path opening / closing damper 54, and the second intake port 51b communicating with the non-heat exchange air supply path 5B is fully opened. The first intake port 51a communicating with the heat exchange supply air passage 5A is fully closed by the first damper 54a, and the entire amount of the outside air OA is bypassed by the first heat exchange air passage 30a of the heat exchange element 3A. .

  Further, the heat pump air conditioner 2A configures the refrigeration cycle by the four-way valve 25 and operates the compressor 23, thereby causing the first heat exchanger 21 to function as an evaporator, and the outside air by the heat absorption action of the refrigerant by the evaporator. Cool OA. At this time, the second heat exchanger 22 functions as a condenser and cools and liquefies the refrigerant.

  When the blower fan unit 53 is operated in the above state, the outside air OA is sucked from the second intake port 51b, and the entire amount of the outside air OA is supplied to the non-heat exchange supply air passage 5B. In the non-heat exchange air supply path 5B, the outside air OA is supplied to the first heat exchanger 21 of the heat pump air conditioner 2A, bypassing the first heat exchange path 30a of the heat exchange element 3A.

  Then, the outside air OA cooled by passing through the first heat exchanger 21 functioning as an evaporator of the refrigeration cycle passes through the second heat exchange air passage 30b of the heat exchange element 3A and serves as the supply air SA. Air is supplied into the room through the air supply port 52.

  In addition, the dew condensation water which generate | occur | produced in the 1st heat exchanger 21 is collect | recovered with the drain pan 60, and is drained outside.

  In the cooling mode, the air path through which the outside air OA passes is switched to the non-heat exchange air supply path 5B that bypasses the first heat exchange air path 30a of the heat exchange element 3A, so that the outside air OA having a high temperature in summer and the heat pump Heat exchange is not performed between the air cooled by the air conditioner 2A.

  Thereby, the temperature rise of the outside air OA cooled by the heat pump air conditioner 2A is prevented, and the high temperature outside air OA is supplied as medium or low temperature air according to the operation capability of the heat pump air conditioner 2A to cool the room. be able to. Moreover, indoor ventilation can be performed by supplying air.

  In the cooling mode, when the first intake port 51a, which is fully closed, is gradually opened by the air passage opening / closing damper 54, a predetermined amount is set according to the opening degree of the first damper 54a and the second damper 54b. Is exchanged between the outside air OA and the outside air OA cooled by the heat pump air conditioner 2A, and the temperature of the cool air blown out can be adjusted. It is also possible to adjust the dehumidification amount in the cooling mode.

(3) Operation Example in Humidification Heating Mode In the humidification heating mode, the second damper 54b is opened by the operation of the air passage opening / closing damper 54, and the second intake port 51b communicating with the non-heat exchange air supply air passage 5B is fully opened. At the same time, the first intake port 51a communicating with the heat exchange air supply air passage 5A is fully closed by the first damper 54a, and the entire amount of the outside air OA is changed to the first heat exchange air passage 30a of the heat exchange element 3A. Bypass.

  Further, the heat pump air conditioner 2A configures the heat pump by the four-way valve 25 and operates the compressor 23, thereby causing the first heat exchanger 21 to function as a condenser, and the outside air OA by the heat radiation action of the refrigerant by the condenser. Heating. At this time, the second heat exchanger 22 functions as an evaporator and vaporizes the refrigerant.

  Further, water is sprayed by the watering device 62 to the heat exchange air supply air passage 5A downstream of the first heat exchanger 21 of the heat pump air conditioner 2A.

  When the blower fan unit 53 is operated in the above state, the outside air OA is sucked from the second intake port 51b, and the entire amount of the outside air OA is supplied to the non-heat exchange supply air passage 5B. In the non-heat exchange air supply path 5B, the outside air OA is supplied to the first heat exchanger 21 of the heat pump air conditioner 2A, bypassing the first heat exchange path 30a of the heat exchange element 3A.

  Then, the outside air OA heated by passing through the first heat exchanger 21 functioning as a condenser of the heat pump is humidified by watering by the watering device 62, and the second heat exchange air passage of the heat exchange element 3A. The air is supplied into the room through the air supply port 52 as air supply SA through 30b.

  In addition, the surplus water sprinkled by the sprinkler 62 is collected by the drain pan 60 and drained to the outside.

  In the humidification heating mode, by switching the air passage through which the outside air OA passes to the non-heat exchange air supply passage 5B that bypasses the first heat exchange air passage 30a of the heat exchange element 3A, the outside air OA having a low temperature in the winter season, Heat exchange is not performed between the air heated by the heat pump air conditioner 2A.

  Thereby, the temperature drop of the outside air OA heated by the heat pump air conditioner 2A is prevented, and the low temperature and low humidity outside air OA is changed into the medium temperature and high humidity air according to the operation capacity of the heat pump air conditioner 2A and the water supply amount of the watering device 62. It is possible to supply air and perform indoor humidification heating, and it is possible to prevent indoor overdrying without installing a separate humidifier. Moreover, indoor ventilation can be performed by supplying air.

  Furthermore, by preventing the temperature of the outside air OA heated by the heat pump air conditioner 2A from decreasing, the supplied air is prevented from becoming saturated, and the water sprayed for humidification is condensed and drained. Can be reduced.

  In the humidification heating mode, when the first intake port 51a, which is fully closed, is gradually opened by the air passage opening / closing damper 54, depending on the opening degree of the first damper 54a and the second damper 54b, Heat exchange is performed between the fixed amount of outside air OA and the outside air OA heated by the heat pump air conditioner 2A, and the temperature of the hot air blown out can be adjusted.

(4) Operation example in heating mode In the heating mode, the second damper 54b is opened by the operation of the air passage opening / closing damper 54, and the second intake port 51b communicating with the non-heat exchange air supply air passage 5B is fully opened. The first intake port 51a communicating with the heat exchange supply air passage 5A is fully closed by the first damper 54a, and the entire amount of the outside air OA is bypassed by the first heat exchange air passage 30a of the heat exchange element 3A. .

  Further, the heat pump air conditioner 2A configures the heat pump by the four-way valve 25 and operates the compressor 23, thereby causing the first heat exchanger 21 to function as a condenser, and the outside air OA by the heat radiation action of the refrigerant by the condenser. Heating. At this time, the second heat exchanger 22 functions as an evaporator and vaporizes the refrigerant.

  When the blower fan unit 53 is operated in the above state, the outside air OA is sucked from the second intake port 51b, and the entire amount of the outside air OA is supplied to the non-heat exchange supply air passage 5B. In the non-heat exchange air supply path 5B, the outside air OA is supplied to the first heat exchanger 21 of the heat pump air conditioner 2A, bypassing the first heat exchange path 30a of the heat exchange element 3A.

  The outside air OA heated by passing through the first heat exchanger 21 functioning as a heat pump condenser passes through the second heat exchange air passage 30b of the heat exchange element 3A and is supplied as the supply air SA. The air is supplied into the room from the mouth 52.

  In the heating mode, by switching the air path through which the outside air OA passes to the non-heat exchange air supply path 5B that bypasses the first heat exchange air path 30a of the heat exchange element 3A, the outside air OA having a low temperature in winter and the heat pump Heat exchange is not performed with the air heated by the air conditioner 2A.

  Thereby, the temperature drop of the outside air OA heated by the heat pump air conditioner 2A is prevented, and the room temperature is heated by supplying the low temperature outside air OA as medium-temperature air according to the operation capability of the heat pump air conditioner 2A. Can do. Moreover, indoor ventilation can be performed by supplying air.

  In the heating mode, when the first intake port 51a, which is fully closed, is gradually opened by the air passage opening / closing damper 54, a predetermined amount is set according to the opening degree of the first damper 54a and the second damper 54b. Is exchanged between the outside air OA and the outside air OA heated by the heat pump air conditioner 2A, and the temperature of the hot air blown out can be adjusted.

<Examples of effects of the ventilation air conditioner of the first embodiment>
FIG. 7 is an operation explanatory diagram for explaining the effects of the ventilation air conditioner of the first embodiment.

  Here, the ventilation air conditioner 1A according to the first embodiment branches the non-heat exchange air supply passage 5B from the heat exchange supply air passage 5A as shown in FIGS. 7A and 7B. It is good also as a structure.

  Moreover, although the non-heat exchange air supply passage 5B is configured to bypass the first heat exchange air passage 30a of the heat exchange element 3A, the non-heat exchange supply air passage shown in FIGS. 7A and 7B is used. As with the air flow path 5C, the second heat exchange air path 30b of the heat exchange element 3A may be bypassed.

  Further, as shown in FIG. 7 (a), the air path opening / closing damper 54 is branched from the heat exchange supply air path 5A and the non-heat exchange supply air path 5B or non-heat exchange with the heat exchange supply air path 5A. It is good also as a structure with which it equips with a branch location with the supply air path 5C.

  Further, as shown in FIG. 7B, the air path opening / closing damper 54 is joined to the heat exchange air supply path 5A and the non-heat exchange air supply path 5B or non-heat exchange with the heat exchange air supply path 5A. It is good also as a structure with which the confluence | merging location with the supply air path 5C is equipped.

  The air passage opening / closing damper 54 provided at the branching or confluence portion of the air passage passes the entire amount of air sucked by the blower fan unit 53 to the heat exchange air supply passage 5A or distributes the heat according to the opening degree. It is configured to switch between passing through both the air air passage 5A and the non-heat exchange air supply passages 5B and 5C or passing the entire amount through the non-heat exchange air supply passages 5B and 5C.

  Thereby, it is possible to switch whether the entire amount of the outside air OA sucked by the blower fan unit 53 is passed through or bypassed by the heat exchange element 3A. The total amount of outside air OA here also means a substantial total amount including substantially the total amount. Further, the air path opening / closing damper may be provided in each of the heat exchange air supply path and the non-heat exchange air supply path.

  FIG. 8 is an operation explanatory diagram of a ventilation air conditioner as a comparative example. In the ventilation air conditioner 101 of the comparative example, a bypass air passage that bypasses the heat exchange element 103 by branching from the heat exchange air supply passage 105 </ b> A passing through the heat exchange element 103 with a configuration including the air conditioner 102 and the heat exchange element 103. 105B and 105C are provided with air passage opening and closing dampers 106a and 106b. Moreover, the watering apparatus 107 which humidifies air is provided.

  FIG. 9 is an air diagram when the entire amount of outside air is passed through the heat exchange element in the operation of cooling (dehumidifying). Here, an ordinary heat exchange element has a heat (here, temperature) exchange efficiency of about 80%, but here, the operation will be described assuming that the heat exchange efficiency is 100%.

  In the operation of cooling, the air path opening / closing dampers 106a and 106b are closed in order to pass the entire amount of the outside air OA through the heat exchange element 103, and the watering device 107 is not driven.

  Here, in the air diagram, the state (1) is the temperature and humidity of the outside air OA before passing through the heat exchange element 103, and the state (2) is the temperature and humidity of the outside air OA after passing through the heat exchange element 103. (3) is the temperature and humidity of the outside air OA before being air-conditioned by the air conditioner 102 and passing through the heat exchange element 103, and the state (4) is the temperature and humidity of the supply air SA after passing through the heat exchange element 103. Show.

  The capacity of the air conditioner 102 is B [J / kg (DA)], the outside air OA in the state (1) is 35 ° C. and 20 g / kg (DA), and the path of the state (1) → (2) Heat exchange A [J / kg (DA)] through the path of the state (3) → (4) is performed with an efficiency of 100%. At this time, the supply air SA in the state (4) is approximately 25 ° C. and 10 g / kg (DA) of air.

  FIG. 10 is an air diagram when air is passed through the bypass air passage in the cooling operation. If one of the air path opening / closing dampers 106a and 106b is opened from a state where the entire amount of the outside air OA is passed through the heat exchange element 103, the heat exchange efficiency of the heat exchange element 103 is lowered. FIG. 10 shows an air diagram when the temperature exchange efficiency is 50%, and the air supply SA in the state (4) is approximately 22 ° C. and 11 g / kg (DA) of air.

  As described above, the heat exchange efficiency is lowered by opening the bypass air passages 105B and 105C. As a result, the temperature can be lowered from 25 ° C. to 22 ° C. However, the dehumidifying performance is lowered and the humidity is reduced from 10 g / kg (DA) to 11 g. Raises to / kg (DA).

  In the configuration of FIG. 8, even when the air path opening / closing damper 106 a is fully opened and the maximum air volume of air is passed through the bypass air path 105 </ b> B, air passes through one air path of the heat exchange element 103. Similarly, even if the air path opening / closing damper 106b is fully opened and the maximum amount of air is passed through the bypass air path 105C, the air passes through the other air path of the heat exchange element 103.

  FIG. 11 is an air diagram when the outside air is not passed through the heat exchange element in the operation of cooling. As described above, in the ventilation air conditioner of the comparative example, heat (temperature) exchange by the heat exchange element 103 is always performed, and the state (1) → (2) as shown in the air diagram of FIG. Since there is heat exchange through the route and the route of the state (3) → (4), a complete cooling state as shown in the air diagram of FIG. 11 cannot be realized.

  If air is prevented from flowing through one of the air flow paths of the heat exchange element, complete cooling without heat exchange between the path of the state (1) → (2) and the path of the state (3) → (4) exists. As shown in FIG. 11, the temperature of the supply air SA in the state (4) can be approximately 18 ° C. in the path of the state (1) → (4).

  However, in the ventilation air conditioner of the comparative example, even if the air passage opening / closing dampers 106a and 106b are fully opened, air flows through both air passages of the heat exchange element 103, so the supply air SA is only at a temperature of 18 ° C. or higher. There were issues that could not be lowered.

  In order to solve such a problem, if the air passage area through which the air of the air passage opening / closing damper 106a passes is larger than the air passage area through which the air of the heat exchange element 103 passes, one air passage of the heat exchange element 103 is obtained. The amount of air flowing through the heat exchange element 103 can be reduced, but a part of the air flows through one air passage of the heat exchange element 103, and the route of the state (1) → (2) and the route of the state (3) → (4) There is heat exchange due to. Further, as the air passage area of the air passage opening / closing damper 106a is increased, the apparatus becomes larger and the installation becomes difficult.

  On the other hand, if the air passage area through which the air of the heat exchange element 103 passes is made smaller than the air passage area through which the air of the air path opening / closing damper 106a passes, the amount of air flowing through one air passage of the heat exchange element 103 is reduced. However, a part of the air flows in one of the air passages of the heat exchange element 103, and there is heat exchange through the path of the state (1) → (2) and the path of the state (3) → (4). Further, as the air passage area of the heat exchange element 103 is reduced, the pressure loss increases, and it is necessary to increase the capacity of the blower fan or increase the rotation speed of the blower fan. Increased fan rotation speed causes problems such as increased power consumption and noise generation.

  FIG. 12 is an air diagram when the entire amount of outside air is passed through the heat exchange element in the operation of performing humidification heating.

  In the operation of performing humidification and heating, the air path opening / closing dampers 106a and 106b are closed in order to pass the entire amount of the outside air OA through the heat exchange element 103. Here, in the air diagram, the state (5) indicates the temperature and humidity of the outside air OA air-conditioned by the air conditioner 102.

  The capacity of the air conditioner 102 is B [J / kg (DA)], the outside air OA in the state (1) is 5 ° C., 2 g / kg (DA), and the path of the state (1) → (2) Heat exchange A [J / kg (DA)] through the path of the state (3) → (4) is performed with an efficiency of 100%.

  At this time, the outside air OA is heated by the air conditioner 102 to be in the state of (2) → (5). In addition, since the watering device 107 is driven, the air humidity changes from (5) to (3) as the water evaporates. Thereby, the supply air SA in the state (4) becomes air of about 16 ° C. and 11 g / kg (DA).

  FIG. 13 is an air diagram when excessive humidification occurs in the operation of performing humidification heating. In the configuration of FIG. 8, the air heated by the air conditioner 102 is humidified by the watering device 107, but when the amount of humidification becomes excessive, the relative humidity becomes 100 percent in the state (3), and the wind of the heat exchange element 103 is increased. Condensation occurs in the road. The air whose temperature has been raised by the air conditioner 102 is humidified due to a temperature drop due to cooling by heat exchange through the path of the state (1) → (2) and the path of the state (3) → (4). The dehumidified air will be dehumidified, resulting in waste and a configuration for collecting condensed water.

  FIG. 14 is an air diagram when air is passed through the bypass air passage in the operation of performing humidification heating. If one of the air path opening / closing dampers 106a and 106b is opened from a state where the entire amount of the outside air OA is passed through the heat exchange element 103, the heat exchange efficiency of the heat exchange element 103 is lowered. FIG. 14 shows an air diagram when the temperature exchange efficiency is 50%, and the supply air SA in the state (4) is approximately 18 ° C. and 10 g / kg (DA) of air.

  As described above, the heat exchange efficiency is lowered by opening the bypass air passages 105B and 105C. As a result, the temperature can be increased from 16 ° C. to 18 ° C., but the humidification performance is reduced, and the humidity is reduced from 11 g / kg (DA) to 10 g. Decrease to / kg (DA).

  As described above, in the configuration of FIG. 8, even if the air path opening / closing dampers 106 a and 106 b are fully opened and the maximum air volume of air is passed through the bypass air paths 105 </ b> B and 105 </ b> C, the air passes through the heat exchange element 103.

  FIG. 15 is an air diagram in the case where the outside air is not passed through the heat exchange element in the operation of performing humidification heating. As described above, in the ventilation air conditioner of the comparative example, heat (temperature) exchange by the heat exchange element 103 is always performed, and the state (1) → (2) as shown in the air diagram of FIG. Since there is heat exchange through the route and the route of the state (3) → (4), a complete humidification heating state as shown in the air diagram of FIG. 15 cannot be realized.

  If air is prevented from flowing in one of the air flow paths of the heat exchange element, complete humidification without heat exchange between the path of the state (1) → (2) and the path of the state (3) → (4) In the heating state, as shown in FIG. 15, the temperature of the supply air SA in the state (4) can be approximately 22 ° C. in the path of the state (1) → (5) → (4).

  However, in the ventilation air conditioner of the comparative example, even if the air path opening / closing dampers 106a and 106b are fully opened, air flows through both the air paths of the heat exchange element 103, so the supply air SA is only at a temperature of 22 ° C. or less. There was a problem that could not be raised. Even in the heating operation without humidification, the route of the state (5) → (4) is lost, but there is a similar problem.

  In order to solve such a problem, if the air passage area through which the air of the air passage opening / closing damper 106b passes is larger than the air passage area through which the air of the heat exchange element 103 passes, the other air passage of the heat exchange element 103 is obtained. The amount of air flowing through the heat exchange element 103 can be reduced, but part of the air flows through the other air path of the heat exchange element 103, and the path of the state (1) → (2) and the path of the state (3) → (4) There is heat exchange due to. Further, as the air passage area of the air passage opening / closing damper 106b is increased, the apparatus becomes larger and the installation becomes difficult.

  On the other hand, if the air passage area through which the air of the heat exchange element 103 passes is made smaller than the air passage area through which the air of the air passage opening / closing damper 106b passes, the amount of air flowing through the other air passage of the heat exchange element 103 is reduced. However, a part of the air flows into the other air path of the heat exchange element 103, and heat exchange exists between the path of the state (1) → (2) and the path of the state (3) → (4). Further, as the air passage area of the heat exchange element 103 is reduced, the pressure loss increases, and it is necessary to increase the capacity of the blower fan or increase the rotation speed of the blower fan. Increased fan rotation speed causes problems such as increased power consumption and noise generation.

  On the other hand, in the ventilation air conditioner 1A of the first embodiment, as shown in FIG. 3 and the like, the first intake port 51a and the non-heat exchange supply air passage 5B communicated with the heat exchange supply air passage 5A. The air passage opening / closing damper 54 linked to the second intake port 51b communicated is provided, or as shown in FIG. 7, a branch point between the heat exchange air supply passage 5A and the non-heat exchange supply air passages 5B and 5C, or An air path opening / closing damper 54 is provided at a junction between the heat exchange air supply path 5A and the non-heat exchange air supply paths 5B and 5C.

  Thereby, the air path passing through the heat exchange element 3A can be fully closed, and in the cooling mode, a complete cooling state can be realized by the path of the state (1) → (4) shown in FIG. Further, in the humidifying and heating mode, a complete humidifying and heating state can be realized by the route of the states (1) → (5) → (4) shown in FIG.

  FIG. 16 is an explanatory diagram illustrating temperature control ranges of the ventilation air conditioner of the first embodiment and the ventilation air conditioner of the comparative example.

  Here, the air path open / close damper was opened with the same heat path area (pressure loss) of the heat exchange air supply path passing through the heat exchange element and the non-heat exchange supply air path bypassing the heat exchange element (bypass air path). In this case, in the ventilation air conditioner of the comparative example, the heat exchange efficiency changes from a maximum of 100% to an assumed heat exchange efficiency of 50%. On the other hand, in the ventilation air conditioner of the first embodiment, the heat exchange efficiency changes from a maximum of 100% to an assumed heat exchange efficiency of 0%.

  Thereby, at the time of cooling, in the ventilation air conditioner of the comparative example, the temperature control range is 22 ° C. to 25 ° C., whereas in the ventilation air conditioner of the first embodiment, the temperature control range is 18 ° C. to 25 ° C. Widens with ℃.

  Further, during humidification heating, the temperature control range is 16 ° C. to 18 ° C. in the ventilation air conditioner of the comparative example, whereas the temperature control range is 16 ° C. to 22 ° in the ventilation air conditioner of the first embodiment. After all it becomes wide with ℃.

  FIG. 17 is an explanatory diagram showing an example of the air path configuration of the ventilation air conditioner according to the first embodiment. Reference numerals OA and SA and (1) to (6) correspond to the reference numerals in FIG. All the airway configurations in the configuration shown are shown.

  In the air path configuration 1, the outside air OA is passed through the first heat exchange air path and the second heat exchange air path of the heat exchange element 3A, and the non-heat exchange air supply path 5B (bypass 1) and the non-heat exchange supply It is the structure which does not let both air flow path 5C (bypass 2) pass.

  The air path configuration 2 passes the outside air OA through the first heat exchange air path of the heat exchange element 3A and the non-heat exchange air supply path 5C (bypass 2), and heats with the non-heat exchange air supply path 5B (bypass 1). The second heat exchange air passage of the exchange element 3A is not passed.

  The air path configuration 3 allows the outside air OA to pass through the first heat exchange air path, the second heat exchange air path, and the non-heat exchange air supply air path 5C (bypass 2) of the heat exchange element 3A, and non-heat exchange air supply air. The path 5B (bypass 1) is configured not to pass.

  The air path configuration 4 allows the outside air OA to pass through the non-heat exchange air supply path 5B (bypass 1) and the second heat exchange air path of the heat exchange element 3A, and the first heat exchange air path of the heat exchange element 3A. The non-heat exchange air supply passage 5C (bypass 2) is not allowed to pass.

  The air path configuration 5 passes the outside air OA through the non-heat exchange supply air path 5B (bypass 1) and the non-heat exchange supply air path 5C (bypass 2), and the first heat exchange air path of the heat exchange element 3A and the first heat exchange air path 5C (bypass 2). The second heat exchange air passage is not allowed to pass.

  The air path configuration 6 allows the outside air OA to pass through the non-heat exchange air supply path 5B (bypass 1), the second heat exchange air path of the heat exchange element 3A and the non-heat exchange air supply path 5C (bypass 2), and heat. The first heat exchange air passage of the exchange element 3A is not passed.

  The air path configuration 7 allows the outside air OA to pass through the first heat exchange air path of the heat exchange element 3A, the non-heat exchange supply air path 5B (bypass 1), and the second heat exchange air path of the heat exchange element 3A. The non-heat exchange air supply passage 5C (bypass 2) is not allowed to pass.

  The air path configuration 8 allows the outside air OA to pass through the first heat exchange air path of the heat exchange element 3A, the non-heat exchange air supply air path 5B (bypass 1), and the non-heat exchange air supply air path 5C (bypass 2). The second heat exchange air passage of the exchange element 3A is not passed.

  The air path configuration 9 includes the outside air OA, the first heat exchange air path of the heat exchange element 3A, the non-heat exchange air supply path 5B (bypass 1), and the second heat exchange air path of the heat exchange element 3A and the non-heat. This is a configuration in which all of the replacement air supply path 5C (bypass 2) is passed.

  FIG. 18 is an explanatory diagram showing an example of the air path configuration realized by the ventilation air conditioner of the first embodiment, and shows the air path configuration in the dehumidification mode, the cooling / heating mode, and the humidifying / heating mode described in FIG. 3 and the like. Show.

  In the dehumidifying mode, the outside air OA passes through the first heat exchange air passage and the second heat exchange air passage of the heat exchange element 3A, and the non-heat exchange air supply passage 5B (bypass 1) and the non-heat exchange air supply passage. By adopting a configuration in which both of 5C (bypass 2) do not pass, the amount of dehumidification is maximized.

In the cooling / heating mode and the humidifying / heating mode, the outside air OA passes through the non-heat exchange air supply passage 5B (bypass 1) and the second heat exchange air passage of the heat exchange element 3A, and the first heat exchange air of the heat exchange element 3A. By adopting a configuration that does not allow the passage and the non-heat exchange air supply air passage 5C (bypass 2) to pass, heat exchange is not performed, and the air conditioning capability of the heat pump air conditioner 2A is maximized.

  When the cooling operation is performed with the heat pump air conditioner 2A having a capacity of B [J / kg (DA)], the heat pump air conditioner 2A alone is approximately 13 g / kg (DA) as shown in the air diagram of FIG. ) Can be dehumidified. On the other hand, when the dehumidifying operation is performed by passing the entire amount of the outside air OA through the heat exchange element 3A, it can be dehumidified to about 10 g / kg (DA) using the same energy as shown in the air diagram of FIG.

  Thereby, the direction using 3A of heat exchange elements can improve dehumidification performance. On the other hand, when the heat pump air conditioner 2A alone is dehumidified to 10 g / kg (DA), a large amount of energy is required, and the configuration using the heat exchange element 3A can realize energy saving.

<Configuration Example of Ventilation Air Conditioner of Second Embodiment>
FIG. 19 is a configuration diagram illustrating an example of a ventilation air conditioner according to the second embodiment. The ventilation air conditioner 10A of the second embodiment includes, for example, the ventilation air conditioner 1A of the first embodiment and the heat exchange device 11.

  As described above, the ventilation air conditioner 1A includes the heat pump air conditioner 2A and the heat exchange element 3A, and the air path that exchanges heat of the air cooled or heated by the heat pump air conditioner 2A with the outside air OA by the heat exchange element 3A. The air path that bypasses the heat exchange element 3A is switched according to the operation mode, and the air that has been dehumidified or humidified or air-cooled is blown out from the air supply port 52.

  The heat exchange device 11 is installed on the back of the ceiling of the building 201 or the wall of the building 201 (not shown), and connects the air supplied from the ventilation air conditioner 1A connected via the duct 12 via the duct 13a. It blows out from the blower outlet grill 13 made.

  In addition, the indoor air sucked from the inlet grille 14 connected via the duct 14a is exhausted to the outside from the exhaust grille 15 connected via the duct 15a.

  Then, the air supplied from the ventilation air conditioner 1A and the air sucked from the room are heat-exchanged according to the operation mode to be supplied to the room.

  FIG. 20 is a configuration diagram illustrating an example of the heat exchange device. FIG. 20 illustrates a schematic perspective view of the internal configuration of the heat exchange device 11.

  The heat exchange device 11 includes a heat exchange element 110 that performs heat exchange between the air supplied from the ventilation air conditioner 1A and the air sucked from the room. The heat exchange element 110 includes a first heat exchange air passage 110a through which air supplied from the ventilation air conditioner 1A passes, and a second heat exchange air passage 110b through which air sucked from the room passes. The suction port 111a of the first heat exchange air passage 110a is formed at one end, and the air outlet 112a is formed at the other end. In addition, the suction port 111b of the second heat exchange air passage 110b is formed at the other end parted from the air outlet 112a of the first heat exchange air passage 110a, and the air outlet 112b is formed in the first heat exchange air. It is partitioned from the suction port 111a of the air passage 110a and formed at one end.

  The heat exchange device 11 includes a suction port 114, a non-heat exchange air supply port 115 a, and an exhaust port 116 on one side of the case 113 in which the heat exchange element 110 is incorporated, and on the other side of the case 113. A heat exchange air inlet 115b and a return air inlet 117 are provided.

  The suction port 114 communicates with the suction port 111a of the first heat exchange air passage 110a of the heat exchange element 110 and the non-heat exchange air supply port 115a, and the duct 12 described in FIG. 19 is connected to the ventilation air conditioner. The air from 1A is supplied to the first heat exchange air passage 110a or the non-heat exchange air inlet 115a of the heat exchange element 110.

  The heat exchange air inlet 115b communicates with the air outlet 112a of the first heat exchange air passage 110a of the heat exchange element 110, and is connected to the duct 13a described in FIG. 19 together with the non-heat exchange air inlet 115a. Air that has passed through the first heat exchange air passage 110a of the heat exchange element 110 or air that has bypassed the first heat exchange air passage 110a is blown out as the supply air SA from the blowout grill 13.

  The return air suction port 117 communicates with the suction port 111b of the second heat exchange air passage 110b of the heat exchange element 110, and is connected to the duct 14a described with reference to FIG. RA is supplied to the second heat exchange air passage 110b of the heat exchange element 110.

  The exhaust port 116 communicates with the air outlet 112b of the second heat exchange air passage 110b of the heat exchange element 110, and is connected to the duct 15a described in FIG. 19 so that the second heat exchange air passage of the heat exchange element 110 is connected. The air passing through 110b is discharged from the exhaust grill 15 as exhaust EA.

The heat exchange device 11 includes an exhaust fan 118 at the exhaust port 116, sucks the return air RA from the suction port grill 14, passes through the second heat exchange air passage 110 b of the heat exchange element 110, and exhausts air from the exhaust port grill 15. EA is discharged.

In addition, the heat exchange device 11 includes an air passage opening / closing damper (not shown) in the suction grill 14, and the air supplied from the ventilation air conditioner 1 </ b> A is used as the first heat of the non-heat exchange air supply port 115 a or the heat exchange element 110. Distribute to the exchange air passage 110a.

<Operation Example of Ventilation Air Conditioner of Second Embodiment>
Next, the operation of the ventilation air conditioner 10A of the second embodiment will be described with reference to the drawings.

  In the dehumidifying mode, the ventilation air conditioner 1A is dehumidified from the outside air OA and the air obtained by cooling the outside air OA with the heat pump air conditioner 2A by the heat exchange element 3A, and the temperature drop is suppressed from the air supply port 52. Air is blown out.

  In the humidification heating mode, the outside air OA is heated by the heat pump air conditioner 2A, and the humidified air is blown out from the air supply port 52, bypassing the heat exchange element 3A.

  In the dehumidifying mode, the heat exchange device 11 exchanges heat between the dehumidified air supplied from the ventilation air conditioner 1A via the duct 12 and the return air RA from the room sucked from the inlet grille 14 via the duct 14a. Then, the dehumidified air supplied from the ventilation air conditioner 1A is blown out from the outlet grill 13 through the duct 13a as the supply air SA close to room temperature, and the return air RA is exhausted through the duct 15a. 15 is discharged outdoors as exhaust EA.

  Further, in the humidification heating mode, the humidified air supplied from the ventilation air conditioner 1A via the duct 12 bypasses the heat exchange element 110, and is blown out as an air supply SA without exchanging heat with indoor air. Blow out from the grill 13.

  Thereby, in the dehumidification mode in summer, the air dehumidified by the ventilation air conditioner 1A can be supplied close to room temperature. In the humidification heating mode in winter, humidified and warm air can be supplied without being affected by the room temperature. In addition, when not using a dehumidification / humidification function, you may provide the structure which can be switched to an air path which can directly heat-exchange indoor air and external air.

<Modification of Ventilation Air Conditioner of Second Embodiment>
FIG. 21 is a configuration diagram illustrating a modified example of the ventilation air conditioner according to the second embodiment. In the configuration of FIG. 21A, the air supplied from the ventilation air conditioner 1A is branched by the branch chamber 120 and supplied to the heat exchange device 11 installed in each room 202. Heat exchange and supply air. As a result, the dehumidified air can be supplied according to the temperature of each room.

  In the configuration of FIG. 21 (b), the air supplied from the ventilation air conditioner 1A is exchanged with the indoor air by the heat exchange device 11 installed in the corridor 203 of the building 201, and the air is branched by the branch chamber 120. Air is supplied to the room 202. Thereby, the air dehumidified according to the room temperature can be supplied to each room.

<Configuration Example of Ventilation Air Conditioner of Third Embodiment>
Now, when air dehumidified by a ventilation air conditioner or humidified air is supplied into the room, if the dehumidified air is supplied into the room in the summer, the dehumidified air is placed below the room. Descent. On the other hand, when humidified air is supplied indoors in winter, the humidified air rises above the room. Thereby, the distribution of air with different humidity is seen in the room.

  This is because the molecular weight of water and air is lighter in water and heavier in dry air, and therefore, the distribution occurs due to the difference in the weight of moisture-containing air.

  As described above, the difference in humidity between the upper and lower sides of the room causes a difference in comfort when a person stands or sits down.

  Further, for example, even if dehumidified air and humidified air are supplied at the same temperature of 20 ° C., the indoor temperature is high in summer, the dehumidified air is lowered, and in winter, the indoor temperature is low and the humidified air is increased. Different air distributions will occur. As described above, the distribution is caused not only by the density difference but also by the temperature condition.

  FIG. 22 is a configuration diagram illustrating an example of a ventilation air conditioner according to the third embodiment. The ventilation air conditioner 10B of the third embodiment includes, for example, the ventilation air conditioner 1A of the first embodiment, an outlet grill 13D from which dehumidified air is blown, and an outlet grill 13W from which humidified air is blown. The air path switching damper 16 that switches the outlet grill that blows out the air, and the duct 17 that connects the ventilation air conditioner 1A and each of the outlet grills are provided.

The outlet grill 13D is installed on the wall or ceiling near the ceiling of the room 202, and the outlet grill 13W is installed on the wall or floor near the floor of the room 202. The air path switching damper 16 switches whether the air blown out from the ventilation air conditioner 1A is sent to the blowout grill 13D or the blowout grill 13W according to the operation mode.

<Operation Example of Ventilation Air Conditioner of Third Embodiment>
Next, with reference to each figure, operation | movement of the ventilation air conditioner 10B of 3rd Embodiment is demonstrated.

  In the dehumidifying mode, the ventilation air conditioner 1A, as described with reference to FIG. 3 and the like, exchanges heat between the outside air OA and the outside air OA cooled by the heat pump air conditioner 2A by the heat exchange element 3A. The dehumidified air in which the temperature drop is suppressed is blown out.

  In the dehumidifying mode, the air path switching damper 16 switches the air path to the outlet grill 13D. Thereby, the dehumidified air blown out from the ventilation air conditioner 1 </ b> A is supplied from the blowout grill 13 </ b> D above the room 202. Since the dehumidified air is heavy, the dehumidified air descends in the room 202, and the room has a substantially uniform humidity.

  In the humidification heating mode, the ventilation air conditioner 1A heats the outside air OA with the heat pump air conditioner 2A and the humidified air blows out from the air supply port 52 bypassing the heat exchange element 3A as described with reference to FIG. Is done.

  Moreover, in humidification heating mode, the air path switching damper 16 switches an air path to the blower outlet grill 13W. Thereby, the humidified air blown out from the ventilation air conditioner 1 </ b> A is supplied from the outlet grill 13 </ b> W below the room 202. Since the humidified air is light, it goes up inside the room 202 and the room becomes a substantially uniform humidity.

<Configuration Example of Ventilation Air Conditioner of Fourth Embodiment>
When air humidified by a ventilation air conditioner is supplied to each room, the room temperature is low in a room that is not heated, so that the humid air is condensed in the room. For example, when air of 16 ° C. and 11 g / kg (DA) is supplied to a room having a room temperature of 10 ° C., the saturated air at 10 ° C. has an absolute humidity of 7.63 g / kg, and therefore moisture of the difference is condensed. .

  FIG. 23 is a configuration diagram illustrating an example of a ventilation air conditioner according to a fourth embodiment. A ventilation air conditioner 10C according to the fourth embodiment includes, for example, the ventilation air conditioner 1A according to the first embodiment and the air supply device 18 that is integrated with or independent of the ventilation air conditioner 1A. Further, the outlet grill 19a from which dehumidified air and humidified air from the ventilation air conditioner 1A are blown out, the outlet grill 19b from which air (outside air) from the air supply unit 18 is blown, the ventilation air conditioner 1A and the blower A duct 17a for connecting the outlet grill 19a and a duct 17b for connecting the air supply device 18 and the outlet grill 19b are provided.

  The air supply device 18 includes a blower fan (not shown), takes in outside air, and supplies ventilation air into the room. The blower outlet grill 19a and the blower outlet grill 19b are each provided with an air passage opening / closing damper (not shown), and control the air volume of the ventilation air and the dehumidified / humidified air according to the operation mode. The air outlet grill 19b may be configured to supply air by mixing dehumidified / humidified air using an air supply device called a pipe type ventilation device attached to the wall of the building.

<Operation Example of Ventilation Air Conditioner of Fourth Embodiment>
Next, the operation of the ventilation air conditioner 10C according to the fourth embodiment will be described with reference to the drawings.

  In the humidification heating mode, the ventilation air conditioner 1A heats the outside air OA with the heat pump air conditioner 2A and the humidified air blows out from the air supply port 52 bypassing the heat exchange element 3A as described with reference to FIG. Is done. The humidified air blown out from the ventilation air conditioner 1A is supplied into the room from the blowout grill 19a.

  In the humidification heating mode, the air path opening / closing dampers (not shown) of the outlet grilles 19a and 19b are controlled in accordance with the room temperature of the room 202 so that condensation does not occur due to the difference between the temperature of the humidified air and the room temperature. The air volume of the supplied ventilation air (outside air) is controlled. In addition, it is good also as a structure using the air cooled / heated as ventilation air.

<Modification of Ventilation Air Conditioner of Fourth Embodiment>
FIG. 24 is a configuration diagram illustrating a modified example of the ventilation air conditioner according to the fourth embodiment. The ventilation air conditioner 10D of the modification of the fourth embodiment has a configuration combined with the ventilation air conditioner of the third embodiment. For example, the ventilation air conditioner 1A of the first embodiment and the dehumidified air or An outlet grill 13D from which ventilation air is blown out and an outlet grill 13W from which humidified air or ventilation air is blown out are provided.

  Moreover, the air path opening / closing damper 16a for controlling the air volume of the air blown from the outlet grill 13D and the air path opening / closing damper 16b for controlling the air volume of the air blown from the air outlet grill 13W are provided. Further, a duct 17c that connects the ventilation air conditioner 1A and the outlet grill 13D, and 17d that connects the ventilation air conditioner 1A and the outlet grill 13W are provided.

  The ventilation air conditioner 1A includes an air supply device (not shown) that is integrated or independent, and blows dehumidified air to the duct 17c and blows ventilation air (outside air) to the duct 17d according to the operation mode. Further, the humid air is blown out to the duct 17d, and the ventilation air is blown out to the duct 17c.

  The outlet grill 13D is installed on the wall or ceiling near the ceiling of the room 202, and the outlet grill 13W is installed on the wall or floor near the floor of the room 202.

  Next, with reference to each figure, operation | movement of 10D of ventilation air conditioners of the modification of 4th Embodiment is demonstrated.

  In the dehumidifying mode, the ventilating air conditioner 1A, as described with reference to FIG. 3 and the like, heat was exchanged between the outside air OA and the outside air OA cooled by the heat pump air conditioner 2A by the heat exchange element 3A, and the temperature drop was suppressed. Dehumidified air is blown out.

  In the dehumidifying mode, as shown in FIG. 24A, the dehumidified air is blown out to the duct 17c, the ventilation air is blown out to the duct 17d, and the dehumidified air blown out from the ventilation air conditioner 1A Air is supplied from the air outlet grill 13D above, and the ventilation air is supplied from the air outlet grill 13W below the room 202. Since the dehumidified air is heavy, the dehumidified air descends in the room 202, and the room has a substantially uniform humidity.

  Further, the air volumes of the dehumidified air and the ventilation air are controlled by the air passage opening / closing dampers 16a and 16b, and the temperature and humidity are controlled for each room 202.

  As described with reference to FIG. 3 and the like, the ventilation air conditioner 1A heats the outside air OA with the heat pump air conditioner 2A and blows out the air that bypasses the heat exchange element 3A, as described with reference to FIG.

  In the humidification heating mode, as shown in FIG. 24B, the humidified air is blown out to the duct 17d, the ventilation air is blown out to the duct 17c, and the humidified air blown out from the ventilation air conditioner 1A The ventilation air is supplied from the outlet grill 13D above the room 202, and the ventilation air is supplied from the outlet grill 13D. Since the humidified air is light, it goes up inside the room 202 and the room becomes a substantially uniform humidity.

  Further, the air volumes of the humidified air and the ventilation air are controlled by the air passage opening / closing dampers 16a and 16b, and the temperature and humidity are controlled so that no condensation occurs in each room 202.

<Configuration Example of Ventilation Air Conditioner of Fifth Embodiment>
FIG. 25 is a configuration diagram illustrating an example of a ventilation air conditioner according to a fifth embodiment. The ventilation air conditioner 1B according to the fifth embodiment is harmonized by the heat pump air conditioner 2A as an air conditioner that cools and heats the air, and the air temperature adjustment and the heat pump air conditioner 2A harmonized by the heat pump air conditioner 2A. The heat exchange element 3A which performs dehumidification etc. of the performed air is provided.

  The ventilation air conditioner 1B includes a heat exchange air supply passage 5A that exchanges heat cooled or heated by the heat pump air conditioner 2A with the outside air OA by the heat exchange element 3A, and a non-heat exchange supply air that bypasses the heat exchange element 3A. The path 5 </ b> B is switched according to the operation mode, and the air that has been dehumidified, humidified, or air-conditioned is blown out from the air supply port 52 by the blower fan unit 53 through the intake port 51.

  The ventilation air conditioner 1B includes a silver ion supply device 300 that supplies silver ions to the heat exchange element 3A and the like. The silver ion supply device 300 is an example of a metal ion supply means, and can supply silver ions, which are metal ions, to both the first heat exchange air passage 30a and the second heat exchange air passage 30b of the heat exchange element 3A, for example. Arrangement includes one or more silver ion spray nozzles 301.

  The ventilation air conditioner 1 </ b> B includes a watering device 62 that humidifies the air, and the excess water sprayed from the watering device 62, the condensed water generated by the heat exchange element 3 </ b> A, and the spray from the silver ion spray nozzle 301. A drain pan 60 is provided for recovering surplus water containing silver ions.

  FIG. 26 is a configuration diagram illustrating an example of a silver ion supply device that is a metal ion. In the silver ion supply device 300A, the silver ion spray nozzle 301 is connected to the silver ion generation device 302A.

Silver ion generator 302A includes a water tank 303, the silver ions pellets 304 which is immersed in the water storage tank 303, the rotary blade 305 for stirring the water in savings aquarium 303, a motor 305a for rotating the rotary vane 305 .

  The silver ion generator 302A includes a water supply pipe 306 that supplies water to the water storage tank 303, and a valve 306a that controls the amount of water supply.

  In the silver ion generator 302A, the silver ion pellets 304 are immersed in the water stored in the water storage tank 303, so that the silver ions are dissolved even in a state where no water flows. Then, water containing silver ions is sprayed from the silver ion spray nozzle 301 by the water pressure supplied from the water supply pipe 306.

  Further, by generating convection in the water storage tank 303 with water supplied from the water supply pipe 306, silver ions can be dissolved and the concentration of silver ions can be increased. In order to further increase the concentration of silver ions, the rotating blades 305 are rotated to promote convection in the water storage tank 303, thereby promoting dissolution of silver ions.

  In this example, water containing silver ions is sprayed from the silver ion spray nozzle 301 by water pressure, but a pump (not shown) is provided in front of the silver ion spray nozzle 301, and water is supplied from the water storage tank 303 by the pump. It is good also as a structure sprayed from the silver ion spray nozzle 301 with the pressure to pump.

  The concentration control of silver ions is performed by adjusting the flow rate of tap water supplied to the water storage tank 303 by adjusting the opening of the valve 306a. Alternatively, the rotation speed of the rotary blade 305 may be adjusted by the motor 305a, or the amount of circulating water in the water storage tank 303 may be adjusted by a pump (not shown).

  FIG. 27 is a configuration diagram illustrating another example of the silver ion supply device. In the silver ion supply device 300B, the silver ion spray nozzle 301 is connected to the silver ion generation device 302B.

  The silver ion generator 302B includes a silver ion water storage tank 307 containing silver ions, a water supply pipe 308 that supplies water to the silver ion water storage tank 307, a valve 308a that controls the amount of water supply, and the like. A two-component mixing pump 309 is provided that pumps silver ion water from the tank 307 and mixes it with water (tap water) supplied from a water supply pipe 308.

  The silver ion generator 302B pumps silver ion water from the silver ion water storage tank 307 with a two-liquid mixing pump 309, mixes it with water supplied from a water supply pipe 308, and mixes silver from the silver ion spray nozzle 301 with water pressure or the like. Spray water with ions.

  In the two-liquid mixing pump 309, control is performed to keep the silver ion concentration constant even if the tap water supply amount changes. Here, in the case of a configuration using silver ion pellets, the dissolution rate changes due to the presence of impurities such as water temperature and calcium (Ca) in tap water, whereas when the liquid can be mixed in a certain amount, The concentration can be controlled more uniformly.

<Example of Operation of Device of Fifth Embodiment>
Next, with reference to each figure, operation | movement of the ventilation air conditioner 1B of 5th Embodiment is demonstrated. In addition, normal operation modes, such as a dehumidification mode and a humidification heating mode, are the same as the ventilation air conditioner 1A of 1st Embodiment.

  The ventilation air conditioner 1B according to the fifth embodiment includes an antibacterial mode in addition to the normal operation mode. In the antibacterial mode, the silver ion supply device 300 sprays water containing silver ions onto the heat exchange element 3A, the duct, or the like. Then, after the spraying of silver ions is stopped, the blower fan unit 53 is driven to flow air to dry the inside of the apparatus, so that the silver ions are attached to the air path or the like of the heat exchange element 3A and have an antibacterial action.

  The antibacterial mode is executed, for example, at regular time intervals or every fixed date and time so that silver ions are adhered regularly. Thereby, even when dirt adheres to the air passage, it is possible to always have an antibacterial action by attaching silver ions from above. Moreover, as long as it has an antibacterial action, other metal ions may be used instead of silver ions.

  The present invention is applied to a ventilation air conditioner that takes in outside air and performs indoor dehumidification and air conditioning.

It is a block diagram which shows an example of the ventilation air conditioner of 1st Embodiment. It is a disassembled perspective view of the ventilation air conditioner of 1st Embodiment. It is an air-path block diagram of the ventilation air conditioner of 1st Embodiment. It is a block diagram which shows an example of embodiment of a heat exchange element. It is a block diagram which shows an example of embodiment of a heat exchange element. It is a disassembled perspective view of an air path opening / closing damper. It is operation | movement explanatory drawing explaining the effect of the ventilation air conditioner of 1st Embodiment. It is operation | movement explanatory drawing of the ventilation air conditioner as a comparative example. It is an air diagram at the time of letting the whole quantity of external air pass to a heat exchange element by the operation | movement which performs air_conditioning | cooling (dehumidification). It is an air line figure at the time of letting air pass to a bypass wind path by the operation | movement which performs air_conditioning | cooling. It is an air diagram in case outside air is not passed through a heat exchange element by operation which performs air conditioning. It is an air diagram at the time of letting the whole quantity of external air pass to a heat exchange element by the operation | movement which performs humidification heating. It is an air line figure when over-humidification arises by operation which performs humidification heating. It is an air line figure at the time of letting air pass to a bypass wind path by the operation | movement which performs humidification heating. It is an air diagram in case outside air is not passed through a heat exchange element by operation which performs humidification heating. It is explanatory drawing which shows the temperature control range of the ventilation air conditioner of 1st Embodiment, and the ventilation air conditioner of a comparative example. It is explanatory drawing which shows an example of the air path structure of the ventilation air conditioner of 1st Embodiment. It is explanatory drawing which shows an example of the air path structure implement | achieved with the ventilation air conditioner of 1st Embodiment. It is a block diagram which shows an example of the ventilation air conditioner of 2nd Embodiment. It is a block diagram which shows an example of a heat exchange apparatus. It is a block diagram which shows the modification of the ventilation air conditioner of 2nd Embodiment. It is a block diagram which shows an example of the ventilation air conditioner of 3rd Embodiment. It is a block diagram which shows an example of the ventilation air conditioner of 4th Embodiment. It is a block diagram which shows the modification of the ventilation air conditioner of 4th Embodiment. It is a block diagram which shows an example of the ventilation air conditioner of 5th Embodiment. It is a block diagram which shows an example of a silver ion supply apparatus. It is a block diagram which shows the other example of a silver ion supply apparatus.

Explanation of symbols

  1A, 1B, 10A, 10B, 10C, 10D ... Ventilation air conditioner, 2A ... Heat pump air conditioner, 3A ... Heat exchange element, 5A ... Heat exchange air supply path, 5B ... Non-heat Exchange air supply path, 51 ... intake, 51a ... first intake, 51b ... second intake, 54 ... airway opening / closing damper, 54a ... first damper, 54b ... second damper, 60 ... drain pan, 62 ... watering device

Claims (4)

First heat exchange air path and the second heat exchange air path is being isolated from each other are alternately stacked to sandwich the partition wall, the air and the second heat exchange air path through the first heat exchange air path A heat exchange element that exchanges heat with the air passing through
An air conditioner that performs air conditioning;
An outside air inlet in which the first inlet and the second inlet are arranged in parallel;
The first intake port and the suction side of the first heat exchange air passage of the heat exchange element are communicated, and the blowout side of the first heat exchange air passage is communicated with the second heat through the air conditioner. A heat exchange air supply passage that communicates with the suction side of the exchange air passage, and that communicates the outlet side of the second heat exchange air passage with the air supply port;
A non-heat exchange air supply passage that bypasses the first heat exchange air passage of the heat exchange element and communicates the second intake port with the heat exchange air supply passage upstream of the air conditioner; ,
An air path opening / closing means for switching the air path by opening and closing the heat exchange air supply air path and the non-heat exchange air supply air path;
The inlet is the heat exchange element in which the first heat exchange air passage and the second heat exchange air passage are stacked, and a portion facing the first heat exchange air passage is opened, The second intake ports are arranged in parallel on both sides of the first intake port that is in communication with the suction side of the first heat exchange air passage where the portion facing the second heat exchange air passage is blocked;
The non-heat exchange air supply air passage is formed on both sides of the heat exchange element along a stacking direction of the first heat exchange air passage and the second heat exchange air passage, and on both sides of the heat exchange element. The formed non-heat exchange air supply passage communicates with the second intake port arranged in parallel on both sides of the first intake port,
The air path opening / closing means includes a first damper that opens and closes the first intake port, and a second damper that opens and closes the second intake port, and is provided on the same shaft portion with different phases. The ventilation air conditioner characterized in that the first damper and the second damper are actuated by rotation of the shaft portion to switch between opening and closing of the first intake port and the second intake port. A branch chamber for branching air blown from the air supply port and supplying air to a plurality of rooms;
The heat exchange apparatus which performs heat exchange between the air branched by the said branch chamber, and the air of each room, and supplies the air by which heat was exchanged to each room was provided. Ventilation air conditioner. A heat exchange device for exchanging heat between the air blown from the air supply port and the air in a predetermined room;
The ventilation air conditioner according to claim 1, further comprising a branch chamber that branches the air heat-exchanged by the heat exchange device and supplies air to a plurality of rooms. In the humidification heating mode in which the outside air is heated by the air conditioner and humidified air is blown out from the air supply port and supplied to the room, the room is supplied with air by an air supply device that takes in outside air and supplies it to the room The ventilation air conditioner according to claim 1, 2 or 3, wherein an air volume of the outside air supplied to the room is controlled by an air passage opening / closing damper provided in an outlet grill from which the outside air is blown out. .

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