JP5535163B2 - Air conditioner - Google Patents

Description

  The present invention relates to an air conditioner that performs total heat exchange between outside air and return air from a room using a heat exchange rotor during indoor ventilation.

  During ventilation, if heat is exchanged between the outside air and the return air from the room using a total heat exchange rotor, the energy loss of the warm air and cold air created by the air conditioner is reduced, saving energy. The effect can be enhanced. When the main purpose of this ventilation is to reduce the concentration of carbon dioxide generated by human exhalation in the room, there is some mixing of the air between the outside air and the room air during heat exchange by the heat exchange rotor. Even if this occurred, it was sufficient for practical use.

  However, if there are sources of air pollutant components such as harmful gases and odorous gases in the room, harmful gases and odorous gases that are generated indoors and contained in the return air from the room are exchanged into the outside air taken from outside. If mixed in, harmful gas and odorous gas will be returned as part of the air supplied to the room.

  As an improvement measure, a proposal has been made to prevent the indoor return air from being mixed into the supply air by setting the pressure in the supply air passage through which the supply air passes to be higher than the pressure in the return air duct through which the return air passes. As an example, there is a technique disclosed in Patent Document 1.

JP 2009-14504 A

  Even if there is a source of harmful gas in the room, the indoor environment is maintained by ventilation, and the indoor return air is not mixed into the supply air. The heat exchange rotor can significantly prevent energy loss associated with ventilation.

  Thus, although what was disclosed by patent document 1 has a great advantage, in order to maintain the pressure in the air supply duct through which supply air passes higher than the pressure in the return air duct through which return air passes In addition, the pressure loss of the duct needs to be appropriate. In particular, when such equipment is additionally installed in an existing air conditioner, it may be necessary to replace all existing ducts if the pressure loss of existing equipment ducts is to be appropriate. In actuality, there is a problem that it becomes difficult to install in addition to an existing air conditioner.

  The present invention has been made to solve the above-described problems, and can be installed in addition to an existing air conditioner. Heat exchange in ventilation can be performed without reliably mixing return air into supply air. It aims at providing the air conditioning apparatus which can be performed.

  The present invention balances the static pressure before and after the heat exchange rotor in order to reduce the mixing of air between the outside air and the room air when using the total heat exchange by the heat exchange rotor when performing ventilation. Is the most important feature.

  That is, a heat exchange rotor having an adsorbent made of ion exchange resin supported on a honeycomb body is divided into an outside air passing zone through which outside air passes and a return air passing zone through which indoor return air passes, and air is sent to the outside air passing zone. At least a first blower, a second blower for sucking air from the outside air passage zone, and a third blower for passing air through the return air passage zone are provided, and the outside air is supplied into the room through the heat exchange rotor by these fans. The indoor air is discharged to the atmosphere, and the static pressure of the indoor supply air is higher than the static pressure of the outside air by each blower, and the static pressure of the return air from the indoor is lower than the static pressure of the indoor supply air, By reducing the static pressure of the air released to the air to be lower than the static pressure of the return air, the object of minimizing the mixing of the return air from the room and the outside air due to ventilation is realized.

  Since the air conditioner of the present invention has a static pressure balance, there is no mixing of indoor return air and indoor supply air in heat exchange during ventilation, and air pollution components such as harmful gases are generated indoors. Even if it is a case, there exists an advantage that there is no bad influence on the person who exists indoors.

Here, the problem is that harmful gases generated indoors are released to the atmosphere. For example, halogen-based organic compounds are easily decomposed by ultraviolet rays, so that they are rendered harmless immediately after being released into the atmosphere. In addition, since harmful components can be maintained in a state that satisfies environmental standards, such as being diluted to hundreds of times in a short time due to atmospheric release, there is no problem of atmospheric emission. If the harmful gas is not suitable for direct release into the atmosphere, it should be released directly into the atmosphere after detoxification via a harmful gas treatment device.
In addition, although people in the room directly inhale indoor air, indoor ventilation is maintained and air pollutants are diluted in a short time and do not inhale high-concentration gas indoors. .

  Furthermore, by setting the air flow rate of the blower appropriately so that the static pressure of the air in the indoor space is greater than the external atmospheric pressure, air flows into the room from outside the supply air that has passed through the heat exchange rotor. The indoor environment can be maintained in a properly controlled condition with air conditioning with ventilation with total heat exchange, and there are unintended changes in the indoor environment in the presence of sources of air pollutants. Thus, it is possible to reliably prevent a situation in which stable discharge of air pollutant components is impaired.

It is explanatory drawing which showed the flow of the air of the air conditioning apparatus which concerns on the 1st Embodiment of this invention. It is explanatory drawing which showed the flow of the air of the other examples of the air conditioning apparatus which concerns on the 1st Embodiment of this invention. It is explanatory drawing which showed the flow of the air of the air conditioning apparatus which concerns on the 2nd Embodiment of this invention. It is explanatory drawing which showed the flow of the air of the air conditioning apparatus which concerns on the 3rd Embodiment of this invention. It is explanatory drawing which showed the flow of the air of the air conditioning apparatus which concerns on the 4th Embodiment of this invention.

(First embodiment of the present invention)
Hereinafter, a first embodiment of the present invention will be described with reference to FIG.
The heat exchange rotor 1 is divided into an outside air passing zone 2 through which outside air passes and a return air passing zone 3 through which room return air passes. The heat exchange rotor 1 is configured to rotate via a belt 5 by a geared motor 4. The heat exchange rotor 1 is finished in a honeycomb shape by corrugating an aluminum sheet and winding up the corrugated sheet. Further, the heat exchange rotor 1 carries a powder obtained by pulverizing an ion exchange resin as a moisture adsorbent by an adhesive.

  This is the reason why ion exchange resins are used as moisture adsorbents. However, ion exchange resins hardly adsorb substances other than water, and the migration of air pollutants due to moisture adsorption / release can be suppressed to a very small amount. It is.

  In addition, as a countermeasure against the point that the contaminated air leaks from the return air passing zone 3 to the outside air passing zone 2 while the contaminated air remains in the gap of the heat exchange rotor 1, the heat exchange rotor 1 is returned to the return air passing zone. A purge sector (this means is well known and is not shown in the figure) is provided along the boundary portion that transitions from 3 to the outside air passing zone 2, and purge air is supplied to enter the rotor gap. A method of purging and removing air is adopted.

  The first blower 6 is provided on the upstream side of the outside air passage zone 2 of the heat exchange rotor 1, sucks air in the outside atmosphere, that is, outside air (OA), and draws air into the outside air passage zone 2 of the heat exchange rotor 1. To send. The second blower 7 is provided between the outside air passing zone 2 of the heat exchange rotor 1 and the room 10, sucks air from the outside air passing zone 2, and sends the air to the room 10.

  One or both of the first blower 6 and the second blower 7 adjust the amount of air that passes through the outside air passing zone 2 of the heat exchange rotor 1 and is supplied to the room, and thereby the indoor space of the room 10 The static pressure of the air is controlled to be a predetermined pressure larger than the external atmospheric pressure.

  A cooling coil 11, a heating coil 12, and a humidifier 13 are provided on the upstream side of the second blower 7, and the air sent as the supply air (SA) to the room 10 through the outside air passage zone 2 is supplied to the room. Before being sent to 10, it passes through a cooling coil 11, a heating coil 12, and a humidifier 13. Note that a separate air conditioning device may be provided in the room 10.

  The third blower 9 is provided between the room 10 and the return air passage zone 3 of the heat exchange rotor 1, sucks out return air (RA) from the room 10, and enters the return air passage zone 3 of the heat exchange rotor 1. Then, the air passes through the return air passage zone 3, and the air passing therethrough is discharged into the atmosphere as exhaust (EA).

  Next, operation | movement of the air conditioning apparatus which concerns on the 1st Embodiment of this invention is demonstrated. First, the three blowers 6, 7, 9 are started, the geared motor 4 is further started, and the heat exchange rotor 1 is rotated.

  The first blower 6 sucks outside air (OA) and sends air to the outside air passing zone 2 of the heat exchange rotor 1. The second blower 7 sucks air from the outside air passing zone 2 and sends the air to the room 10. This air passes through the cooling coil 11, the heating coil 12, and the humidifier 13 before being sent to the room 10. And it is sent to the room 10 as supply air (SA).

  Return air (RA) from the room 10 is sucked out of the room 10 by the third blower 9 and sent to the return air passage zone 3 of the heat exchange rotor 1. The air that has passed through the return air passage zone 3 is released into the atmosphere as exhaust (EA).

  As a result, the air in the room 10 is replaced with the supply air (SA) that has passed through the outside air passing zone 2, and the static pressure of the air in the room 10 is made larger than the external atmospheric pressure, so that the air in the room 10 is in a preferable state. Kept. For example, if a printing machine (not shown) is installed in the room 10, solvent vapor of ink is generated from the printing machine as the air contamination component. In this case, when the printing press is installed near the suction port of the return air RA, the generated solvent vapor is discharged outside without diffusing into the room 10.

  Depending on the air conditions of the outside air, the temperature of the room is adjusted by circulating cold water to the cooling coil 11 or supplying hot water or steam to the heating coil 12, and condensation occurs in the duct through which the supply air (SA) passes. Etc. can be prevented. Furthermore, if the indoor air is too dry, the characteristics of the paper handled by, for example, a printing machine may change, or problems may arise in handling the paper due to the generation of static electricity. Steam is supplied to the air and the supply air (SA) is humidified.

  Even if solvent vapor is generated from the printing machine installed in the room 10, the pressure in the outside air passing zone 2 is sufficiently higher than the pressure in the return air passing zone 3. The solvent vapor is not adsorbed, and therefore the solvent vapor is not mixed into the supply air (SA) supplied to the room 10.

  In addition, by appropriately controlling the amount of air blown by either or both of the first blower 6 and the second blower 7, the static pressure of the air in the room 10 is maintained larger than the external atmospheric pressure, In addition to the supply air (SA), no air flows into the room 10 from the outside, and the environment in the room 10 can be maintained in a properly and safely managed state. There is no such thing as damaging the global emissions.

  In addition, the temperature difference between the outside air (OA) that is air taken in from the outside and the return air (RA) that is the air exhausted from the room is below a predetermined reference value, and the outside air (OA) and the return air ( In the case where heat exchange with RA) is not required, adjustment control for reducing the rotor rotation speed of the heat exchange rotor 1 can be performed. For example, when a mechanical device such as a printing machine is installed in the room 10 and the temperature difference between the outside air (OA) and the return air (RA) is small, the return air (RA) heated by the heat generated by the device. When the heat is exchanged, the temperature of the supply air (SA) supplied to the room 10 is increased, which may cause a further increase in the temperature in the room 10, but the rotor rotation speed of the heat exchange rotor 1 is reduced. By doing so, the heat exchange capability is reduced, and an increase in the temperature of the supply air (SA) can be suppressed. Furthermore, since the rotation of the heat exchange rotor 1 is maintained, clogging of the heat exchange rotor 1 is difficult to occur, and an increase in pressure loss of the heat exchange rotor 1 can be suppressed. The static pressure of the supply air (SA) exiting the outside air passage zone 2 is larger than the static pressure of the return air (RA) exhausted from the room entering the return air passage zone 3, or the air in the room 10 A situation in which the static pressure is greater than the external atmospheric pressure is not maintained.

  In addition, in the air conditioning apparatus which concerns on this 1st Embodiment, although the three air blowers 6, 7, and 9 are used, as shown in FIG. 2, from the return air passage zone 3 of the heat exchange rotor 1, as shown in FIG. A fourth blower 8 that sucks air from the return air passage zone 3 and discharges it into the atmosphere can be additionally provided on the downstream side. For example, when a total heat exchange unit using a heat exchange rotor is added to the existing air conditioning and ventilation equipment to form the air conditioning apparatus of the present invention, when the third blower 9 is an existing equipment, Since the capacity of the blower 9 does not take into account the existence of a heat exchange rotor or the like from the beginning, only the third blower 9 is newly added, a pipe line that leads from the room 10 to the outside through the heat exchange rotor 1, Although it may not be possible to cope with the pressure loss of the heat exchange rotor 1 and it may be difficult to pass air through the rotor, by providing the fourth blower 8 on the downstream side of the heat exchange rotor 1, air is appropriately supplied to the heat exchange rotor 1. It is possible to secure a state where heat can be exchanged through the return air passage zone 3.

(Second embodiment of the present invention)
Hereinafter, a second embodiment of the present invention will be described with reference to FIG.
The air conditioning apparatus according to the present embodiment purifies the air that enters the outside air passage zone 2 and the air that enters the return air passage zone 3 of the heat exchange rotor 1, respectively, as compared with the above-described first embodiment. The pressure difference between the static pressure of the air exiting the outside air passage zone 2 of the heat exchange rotor 1 and the static pressure of the air exhausted from the room which is going to enter the return air passage zone 3 is provided. Is provided between the downstream side of the outside air passing zone 2 of the heat exchange rotor 1 and the upstream side of the return air passing zone 3. Since other configurations are common, a duplicate description is avoided.

  The filter 14 is disposed upstream of the outside air passing zone 2 of the heat exchange rotor 1 and purifies the air entering the outside air passing zone 2. The other filter 15 is disposed upstream of the return air passage zone 3 of the heat exchange rotor 1 and purifies the air entering the return air passage zone 3.

The differential pressure sensor 16 is located downstream of the filter 14 and is located downstream of the outside air passing zone 2 of the heat exchanging rotor 1 at a predetermined location on the downstream side of the outside air passing zone 2. The return air (RA) sucked out from the room is located at a predetermined position between the filter 15 and the return air passage zone 3 of the heat exchange rotor 1, which is located downstream of the other filter 15 while positioning the pressure extraction point. This is a mechanism for obtaining a pressure difference as a differential pressure sensor by positioning the static pressure extraction point.
Based on the pressure difference detected by the differential pressure sensor 16, the setting value of the blowing amount of either one of the second blower 7 and the third blower 9 or both is adjusted and controlled.

  In this way, by controlling the air flow rate based on the differential pressure sensor 16 that acquires the static pressure downstream of the filters 14 and 15 and detects the differential pressure, the passage resistance increases due to filter clogging or the like. A state in which the static pressure of the supply air (SA) that has exited the outside air passage zone 2 of the heat exchange rotor 1 is greater than the static pressure of the return air (RA) that has been exhausted from the room that enters the return air passage zone 3; The state in which the static pressure of the air in the air 10 is greater than the external atmospheric pressure can be prevented from changing, and even if the passage resistance of the filter increases, the air flow rate can be adjusted appropriately. Thus, the supply air (SA) supplied to the room 10 does not cause a situation in which solvent vapor is mixed from the return air (RA) or the environment in the room 10 fluctuates, and safety can be ensured.

(Third embodiment of the present invention)
Hereinafter, a third embodiment of the present invention will be described with reference to FIG.
The air conditioner according to this embodiment differs from that of the first embodiment in that the third blower 9 is disposed on the downstream side of the return air passage zone 3 of the heat exchange rotor 1. It is what you have. Since other configurations are common, a duplicate description is avoided. When the humidity of the outside air is appropriate and no problem occurs in the humidity condition of the room air, the humidifier as used in each of the above embodiments can be omitted as shown in FIG.

  Next, operation | movement of the air conditioning apparatus which concerns on the 3rd Embodiment of this invention is demonstrated. First, the blowers 6 to 9 are started, the geared motor 4 is further started, and air is sent to the outside air passing zone 2 and the return air passing zone 3 while rotating the heat exchange rotor 1.

  That is, outside air (OA) is sent to the outside air passing zone 2 of the heat exchange rotor 1 by the first blower 6, and the second blower 7 sucks air from the outside air passing zone 2 and uses this as supply air (SA) in the room 10. send. Then, the return air (RA) is sucked out from the room 10 by the third blower 9 and reaches the return air passing zone 3 of the heat exchange rotor 1, and the exhaust (EA) sucked out from the return air passing zone 3 by the third blower 9. ) Is released into the atmosphere.

  By these operations, as in the first embodiment, the pressure in the outside air passing zone 2 is sufficiently higher than the pressure in the return air passing zone 3, and the air in the room 10 is supplied air that has passed through the outside air passing zone 2 (SA) is replaced, and the static pressure of the air in the room 10 is made larger than the external atmospheric pressure, so that the air in the room 10 is kept in a preferable state.

(Fourth embodiment of the present invention)
Hereinafter, a fourth embodiment of the present invention will be described with reference to FIG.
In the air conditioner according to the present embodiment, a fourth blower 8 is additionally provided between the room 10 and the return air passage zone 3 of the heat exchange rotor 1 as compared with the above-described third embodiment. It has been. Since other configurations are common, a duplicate description is avoided.

  Next, operation | movement of the air conditioning apparatus which concerns on the 4th Embodiment of this invention is demonstrated. First, the four blowers 6 to 9 are started, the geared motor 4 is further started, and the air is sent to the outside air passing zone 2 and the return air passing zone 3 while rotating the heat exchange rotor 1.

  In other words, the outside air OA is sent to the outside air passing zone 2 of the heat exchange rotor 1 by the first blower 6, and the return air RA is released from the return air passing zone 3 of the heat exchange rotor 1 to the atmosphere by the third blower 9. The pressure in the outside air passing zone 2 is sufficiently higher than the pressure in the return air passing zone 3.

  However, when there is no fourth blower 8 as in the third embodiment, this pressure difference may become larger than necessary. That is, such an event occurs when the resistance is large due to a long pipe line from the room 10 to the return air passage zone 3. As a result, the outside air OA leaks directly into the return air passage zone 3, and the ventilation amount of the room 10 is reduced below a predetermined value. Furthermore, there is a problem that noise is generated with this leakage.

  According to this 4th Embodiment, even if it is a case where the resistance of the pipe line from the room 10 to the return air passage zone 3 of the heat exchange rotor 1 is large, regardless of the fluid resistance of the pipe line between them, the fourth blower 8 prevents the pressure in the return air passage zone 3 from dropping more than necessary.

  In the present invention, when there is a source of air pollutant components such as harmful gases in the room, air pollutant components in the return air from the room are mixed in the supply air even if ventilation with total heat exchange is performed. It is possible to provide an air conditioner without air.

DESCRIPTION OF SYMBOLS 1 Heat exchange rotor 2 Outside air passage zone 3 Return air passage zone 4 Geared motor 5 Belt 6 1st air blower 7 2nd air blower 8 4th air blower 9 3rd air blower 10 Room 11 Cooling coil 12 Heating coil 13 Humidifier 14 Filter 15 Filter 16 Difference Pressure sensor

Claims (6)

In an air conditioner that supplies air taken in from the outside atmosphere to an indoor space where a source of air polluting components is generated, and releases air containing air polluting components into the atmosphere.
A flow of air taken in from the outside by rotation, at least divided into an outside air passing zone that carries an adsorbent made of ion exchange resin and allows the air taken in from outside to pass through, and a return air passing zone that passes air exhausted from the room inside. A heat exchange rotor that repeatedly moves between the passage and the flow path of the air discharged from the room, and performs total heat exchange between the air taken in from the outside and the air discharged from the room,
A first blower for sending air taken from the outside to the outside air passing zone of the heat exchange rotor;
A second blower for sucking air from the outside air passing zone and feeding it into the room;
A third blower for passing the air discharged from the room through the return air passage zone,
The second blower and / or the third blower increase the static pressure of the air that has exited the outside air passing zone of the heat exchange rotor to be greater than the static pressure of the air that has been exhausted from the room entering the return air passing zone. An air conditioner characterized by being set to an air flow rate that makes the static pressure of air in space larger than the external atmospheric pressure. In the air conditioning apparatus according to claim 1,
The first blower and / or the second blower adjusts the amount of air that passes through the outside air passing zone of the heat exchange rotor and is supplied to the room, thereby reducing the static pressure of the air in the indoor space from the external atmospheric pressure. An air conditioner controlled to have a large predetermined pressure. In the air conditioning apparatus according to claim 1 or 2,
A differential pressure sensor that detects a pressure difference between the static pressure of the air that has exited the outside air passing zone of the heat exchange rotor and the static pressure of the air that has been exhausted from the room to enter the return air passing zone;
The air conditioner characterized in that the second air blower and / or the third air blower are controlled to adjust the air flow rate setting value based on a pressure difference detected by the differential pressure sensor. In the air conditioning apparatus according to claim 3,
A filter is disposed to purify the air entering the return air passage zone of the heat exchange rotor;
An air conditioning apparatus, wherein a static pressure extraction point for air discharged from a room for obtaining a pressure difference by the differential pressure sensor is located downstream of the filter. In the air conditioning apparatus according to any one of claims 1 to 4,
The third blower is disposed on the downstream side of the return air passage zone of the heat exchange rotor, sucks air from the return air passage zone, and releases it to the atmosphere.
An air conditioner characterized in that a fourth blower for sucking air from the room and directing it toward the return air passage zone is disposed upstream of the return air passage zone of the heat exchange rotor. The air conditioner according to any one of claims 1 to 5,
The heat exchange rotor requires a heat exchange between the air taken in from the outside and the air exhausted from the room because the temperature difference between the air taken in from the outside and the air discharged from the room is below a predetermined reference value. An air conditioner that is adjusted and controlled so as to reduce the rotor rotational speed when not.

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