JP2012149843A - Ventilating device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve cooling capacity even when a temperature of outside air is high.SOLUTION: A ventilating device includes: an air-supply heat-exchange element 11 that provides heat exchange between the outside air and water flowing in a coolant circuit 10; and an exhaust-gas heat-exchange element 12 that provides heat exchange between exhaust and the water flowing in the coolant circuit 10. Accordingly, the outside air flows into the air-supply heat-exchange element 11 from an outside-air suction port 1 through an air supply fan 3; flows into an indirectly-vaporized cooling element 9 after providing heat exchange between the outside air and the water flowing in the coolant circuit 10; passes through a cooled air channel 8; receives cold heat generated in a vaporized air channel 7 via a heat exchange bulkhead; and is supplied as cooled air from an air supply outlet 2 into a room. As a result, the ventilating device is obtained which improves the cooling capacity even when the temperature of the outside air is high.

Description

  The present invention relates to a ventilator that can be installed in a house and ventilates indoors and outdoors, and particularly relates to a ventilator having an indirect evaporative cooling function that cools air using the vaporization heat of water.

  Conventionally, this type of ventilator can be installed in a house and includes an indirect evaporative cooling unit that cools air using the heat of vaporization of water (see, for example, Patent Document 1). ).

  Hereinafter, the ventilation apparatus will be described with reference to FIG.

  As shown in FIG. 5, the ventilator 100 </ b> A includes an air supply passage 109 </ b> A that passes from the outside air inlet 105 through the air supply fan 102 and the air supply air passage 111 b of the indirect evaporative cooling unit 104 to the air supply outlet 106. The exhaust air passage 111a of the indirect evaporative cooling unit 104 through the exhaust air passage 111a and the exhaust fan 103 and the exhaust air passage 110A communicated with the exhaust air outlet 108 from the return air inlet 107 is provided to cool indoor air while cooling the supply air. Ventilation can be performed.

JP 2007-139332 A

  In a ventilator equipped with such a conventional indirect evaporative cooling device, the temperature of the air flowing into the indirect evaporative cooling unit becomes high, especially when the temperature of the outside air is high particularly in summer, and as a result, the cooling of the air supplied to the room There was a problem that the ability was lowered.

  Therefore, the present invention solves the above-described conventional problems, and an object of the present invention is to provide a ventilator that can increase the cooling capacity even when the temperature of the outside air is high.

  In order to achieve this object, the present invention includes an air supply fan provided between the outside air inlet and the air supply outlet, and an exhaust fan provided between the indoor air inlet and the exhaust outlet. Indirect vaporization having a vaporization air flow path through which vaporized air for cooling using the heat of vaporization of water flows and which is partitioned by the vaporization air flow path and the heat exchange partition and through which cooling air flows A cooling element, a cooling water circuit that circulates water used in the indirect vaporization cooling element, a supply air heat exchange element that exchanges heat between outside air and water flowing through the cooling water circuit, exhaust, and An exhaust heat exchanger element that exchanges heat with water flowing through the cooling water circuit is provided, thereby achieving the intended purpose.

  According to the present invention, the air supply fan provided between the outside air inlet and the air supply outlet, the exhaust fan provided between the indoor air inlet and the exhaust outlet, and the heat of vaporization of water are used. And an indirect evaporative cooling element having a cooling air flow path that is partitioned by the vaporized air flow path and a heat exchange partition and through which cooling air flows. A cooling water circuit that circulates water used in the element, a supply air heat exchange element that exchanges heat between outside air and water flowing through the cooling water circuit, and an exhaust gas and water flowing through the cooling water circuit And an exhaust heat exchange element that exchanges heat between the interior air, the indoor air is introduced into the indirect evaporative cooling element from the indoor air suction port by the exhaust fan, and passes through the vaporized air flow path as vaporized air. Cooling the vaporized air flow path using the heat of vaporization of water After, is exhausted to the outside from the exhaust outlet was evacuated heat 交素Ko heat exchanger. In addition, the outside air is supplied from the outside air suction port to the supply air heat exchange element by the air supply fan, heat exchange is performed between the outside air and the water flowing through the cooling water circuit, and then the air is introduced into the indirect evaporative cooling element and the cooling air is supplied. Cooling heat generated in the vaporization air flow path is received through the heat exchange partition and is supplied to the room from the supply air outlet as cooling air, so cooling is possible even when the temperature of the outside air is high. The effect that ability can be made high can be acquired.

1 is a schematic configuration diagram showing an example of a ventilation device according to Embodiment 1 of the present invention. Configuration diagram showing an example of an indirect vaporization cooling element Configuration diagram showing an example of indirect vaporization cooling element and cooling water circuit Schematic block diagram which shows an example of the ventilation apparatus of Embodiment 2 of this invention Schematic configuration diagram showing an example of a conventional ventilation device

  The ventilator according to claim 1 of the present invention includes an air supply fan provided between the outside air inlet and the air supply outlet, an exhaust fan provided between the indoor air inlet and the exhaust outlet, water, An indirect evaporative cooling element having a vaporized air flow path through which vaporized air for cooling using the heat of vaporization flows and which is partitioned by the vaporized air flow path and the heat exchange partition and through which the cooling air flows A cooling water circuit that circulates water used in the indirect evaporative cooling element, a supply air heat exchanger element that exchanges heat between outside air and water flowing through the cooling water circuit, exhaust gas, and the cooling water And an exhaust heat exchange element that exchanges heat with water flowing in the circuit. Thus, after exhausting the indoor air from the indoor air suction port to the indirect evaporative cooling element by the exhaust fan and cooling the inside of the vaporized air flow path with the heat of vaporization of water passing through the vaporized air flow path as the vaporized air, The air is exchanged with the air and exhausted from the exhaust outlet. In addition, the outside air is supplied from the outside air suction port to the supply air heat exchange element by the air supply fan, heat exchange is performed between the outside air and the water flowing through the cooling water circuit, and then the air is introduced into the indirect evaporative cooling element and the cooling air is supplied. Cooling heat generated in the vaporization air flow path is received through the heat exchange partition and is supplied to the room from the supply air outlet as cooling air, so cooling is possible even when the temperature of the outside air is high. There is an effect that the ability can be increased.

  In addition, a configuration may be employed in which an air intake port and an air fan that circulate in the room are provided upstream of the air supply fan. As a result, the inflow temperature to the indirect evaporative cooling element can be lowered by combining the low temperature room air and the high temperature outside air, and the flow rate of the air circulating in the room is adjusted by the recirculation fan. The cooling capacity is improved, and the temperature of the supply air can be adjusted.

  Alternatively, the air flow may be reversed by reversing the rotation direction of the air supply fan and the exhaust fan. As a result, the room air is caused to flow into the indirect evaporative cooling element from the air supply outlet by the air supply fan, passes through the cooling air flow path, and then flows into the air supply heat exchanger element to be exhausted from the outside air inlet. Further, the outside air is caused to flow into the exhaust heat exchange element by the exhaust fan from the exhaust outlet, and after heat exchange is performed between the outside air and the water flowing through the cooling water circuit, the outside air is caused to flow into the indirect evaporative cooling element. Through the vaporized air flow path, and air is supplied from the indoor air inlet to the room with moisture, so even if the temperature of the outside air is low, such as in winter, There is an effect that the temperature of the supply air can be increased and humidification can be performed simultaneously.

  Further, the vaporization air flow path side and the cold heat receiving side of the indirect vaporization cooling element may be interchanged, and the flow of the cooling water circuit may be reversed. As a result, the indoor air is caused to flow into the indirect evaporative cooling element from the indoor air suction port by the exhaust fan, and after passing through the cooling air flow path, heat is exchanged with the exhaust heat exchange element and exhausted to the outside from the exhaust outlet. In addition, the outside air is supplied from the outside air intake port to the supply air heat exchange element by the supply fan, heat exchange is performed between the outside air and the water flowing through the cooling water circuit, and then the inflow air is supplied to the indirect evaporative cooling element. Since heat is exchanged in the flow path and moisture is contained, air is supplied from the indoor air inlet to the room, so the temperature of the air supplied to the room can be adjusted even when the temperature of the outside air is low, such as in winter. The effect that it can be made high and humidification can be performed simultaneously is produced.

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

(Embodiment 1)
As shown in FIGS. 1 and 2, the ventilator A is, for example, a wall-mounted type, and includes an air supply fan 3 provided between the outside air inlet 1 and the air inlet 2, an indoor air inlet 4, and the like. An exhaust fan 6 provided between the exhaust outlet 5 is provided. The air supply fan 3 and the exhaust fan 6 are, for example, sirocco fans. The air supply fan 3 generates an air flow from the outside air inlet 1 to the air inlet 2, and the exhaust fan 6 exhausts from the room air inlet 4. An air flow toward the outlet 5 is generated. The outside air inlet 1 and the exhaust outlet 5 are connected to the outside via a duct (not shown), and the air supply outlet 2 and the indoor air inlet 4 are provided on the indoor side of the ventilation device A, and directly blow out air. Inhale. In addition, it has a vaporized air flow path 7 through which vaporized air that cools using the heat of vaporization of water flows, and a cooling air flow path 8 that is partitioned by the vaporized air flow path 7 and a heat exchange partition and through which cooling air flows. Indirect vaporization cooling element 9 is provided. The wall surface of the vaporized air flow path 7 is formed of a wet wall containing moisture formed of, for example, a non-woven cloth or pulp. Moreover, the wall surface of the cooling air flow path 8 is comprised with the material which has moisture resistance and heat conductivity, such as a resin molded product or aluminum, stainless steel, for example. In addition, a cooling water circuit 10 that circulates water used in the indirect evaporative cooling element 9 is provided, a supply air heat exchanger element 11 that exchanges heat between outside air and water flowing through the cooling water circuit 10, and exhaust and cooling. An exhaust heat exchange element 12 that performs heat exchange with water flowing in the water circuit 10 is provided. As shown in FIG. 3, the cooling water circuit 10 passes through a part of the indirect evaporative cooling element 9 and is configured to be able to simultaneously supply and receive heat used by the indirect evaporative cooling element 9. Circulation of the water flowing through the cooling water circuit 10 is configured to be performed using natural convection due to a temperature difference between water passing through the supply air heat exchange element 11 and water passing through the exhaust heat exchange element 12. The circulation of the water flowing through the cooling water circuit 10 may be configured to circulate by providing a pump or the like in the middle of the cooling water circuit 10, for example. Water is supplied to the cooling water circuit 10 by providing a removable tank 13. In addition, it is good also as a structure which can supply water directly to the cooling water circuit 10 from a water supply. Further, an air circulation inlet 14 and an air circulation fan 15 that circulate in the room are provided on the upstream side of the air supply fan 3. Adjustable configuration. The circulation fan 15, the supply fan 3, and the exhaust fan 6 are configured such that the rotation speed is controlled by separate motors and separate control circuits, and the temperature of the cooling air can be adjusted. The supply fan 3 and the exhaust fan 6 may be driven by the same electric motor. Moreover, it is good also as a structure which takes in the circulation which circulates in a room only with the air supply fan 3. In addition, the indirect vaporization cooling element 9 can be removed, and the vaporization air flow path 7 and the cooling air flow path 8 can be attached in an alternate direction.

  According to such a configuration, the indoor air is caused to flow into the indirect evaporative cooling element 9 from the indoor air suction port 4 by the exhaust fan 6 and passes through the vaporized air flow path 7 as vaporized air by the heat of vaporization of water. After the inside is cooled, heat exchange with the exhaust heat exchanger element 12 is performed, and the air is exhausted from the exhaust outlet 5. In addition, after the outside air is supplied from the outside air inlet 1 to the air supply heat exchange element 11 by the air supply fan 3, heat exchange is performed between the outside air and the water flowing through the cooling water circuit 10, and then to the indirect evaporative cooling element 9. Since it flows in, passes through the cooling air flow path 8 and receives the cold heat generated in the vaporization air flow path 7 through the heat exchange partition, it is supplied to the room from the air supply outlet 2 as cooling air. There is an effect that the cooling capacity can be increased even when the temperature of the outside air is high.

  Further, by providing an air circulation inlet 14 and an air circulation fan 15 that circulate in the room upstream of the air supply fan 3, the indirect evaporative cooling element 9 is obtained by combining the indoor air having a low temperature and the outdoor air having a high temperature. The inflow temperature can be lowered, and the flow rate of the air circulating in the room is adjusted by the circulation fan 15, so that the cooling capacity is improved and the temperature of the supply air can be adjusted. Play.

  Further, the indirect evaporative cooling element 9 can be removed, and the indirect evaporative cooling element 9 is reversed so that the vaporized air flow path 7 side and the cooling air flow path 8 side can be interchanged. The exhaust fan 6 causes the room air to flow into the indirect evaporative cooling element 9, passes through the cooling air flow path 8, exchanges heat with the exhaust heat exchanger element 12, and is exhausted outside through the exhaust outlet 5. In addition, after the outside air is supplied from the outside air inlet 1 to the air supply heat exchange element 11 by the air supply fan 3, heat exchange is performed between the outside air and the water flowing through the cooling water circuit 10, and then to the indirect evaporative cooling element 9. Inflow, heat exchange is performed in the vaporized air flow path 7, and air is supplied into the room from the room air inlet 4 in a state including moisture. It is possible to increase the temperature of the air supply to the air and to perform humidification at the same time.

(Embodiment 2)
4, the same components as those in FIGS. 1 and 2 are denoted by the same reference numerals, and detailed description thereof is omitted. As shown in FIG. 4, the ventilation device B is, for example, a wall-mounted type, and the air flow is reversed by reversing the rotation direction of the air supply fan 3 and the exhaust fan 6 with respect to the ventilation device A in the second embodiment. The configuration was reversed. For example, the air supply fan 3 and the exhaust fan 6 are propeller fans. The air supply fan 3 causes the room air to flow into the indirect evaporative cooling element 9 through the air supply outlet 2, passes through the cooling air flow path 8, and then supplies heat. The air flows into the alternating element 11 and is exhausted from the outside air inlet 1. Further, outside air is caused to flow into the exhaust heat exchange element 12 from the exhaust outlet 5 by the exhaust fan 6, heat exchange is performed between the outside air and the water flowing through the cooling water circuit 10, and then flows into the indirect evaporative cooling element 9. Since heat is exchanged in the vaporized air flow path 7 through the vaporized air flow path 7, and air is supplied into the room from the indoor air suction port 4 in a state where moisture is contained, Even when the temperature is low, the temperature of the air supply to the room can be increased and the humidification can be performed simultaneously.

  The ventilator according to the present invention is capable of ventilating while cooling indoors using the heat of vaporization, and thus is useful as a ventilator having a cooling function used in a house or the like. .

DESCRIPTION OF SYMBOLS 1 Outside air inlet 2 Supply air outlet 3 Supply air fan 4 Indoor air inlet 5 Exhaust air outlet 6 Exhaust fan 7 Vaporized air flow path 8 Cooling air flow path 9 Indirect vaporization cooling element 10 Cooling water circuit 11 Supply air heat exchanger element 12 Exhaust heat exchange element 13 Tank 14 Respiratory inlet 15 Refrigerant fan

Claims (4)

Vaporized air that cools by using the heat of vaporization of water, an air supply fan provided between the outside air inlet and the air outlet, an exhaust fan provided between the indoor air inlet and the air outlet And an indirect evaporative cooling element having a cooling air flow path that is partitioned by the vaporized air flow path and a heat exchange partition and through which cooling air flows, and water used in the indirect evaporative cooling element A cooling water circuit that circulates air and heat exchange between a supply air heat exchanger element that exchanges heat between the outside air and water flowing through the cooling water circuit, and an exhaust gas and water that flows through the cooling water circuit A ventilation apparatus comprising an exhaust heat exchange element. The ventilation apparatus according to claim 1, wherein an air circulation inlet and an air circulation fan that circulate in the room are provided upstream of the air supply fan. The ventilation apparatus according to claim 1, wherein the air flow is reversed by reversing the rotation direction of the air supply fan and the exhaust fan. The ventilator according to claim 1, wherein the vaporization air flow path side and the cold heat receiving side of the indirect vaporization cooling element are switched, and the flow of the cooling water circuit is reversed.

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