JP4772529B2 - Outside air intake type air conditioner - Google Patents

Description

  The present invention relates to an outside air intake type air conditioner that takes in outside air from the outside and mixes it with ambient air from the room to harmonize the air.

Conventionally, as shown in FIG. 6, the outside air intake type air conditioner (Patent Document 1) includes a return air intake chamber b, an exhaust distribution chamber c, an outside air intake chamber d, and an air conditioner. It is composed of a chamber e and an air supply chamber f, and the supply air SA conditioned by the heat exchanger C is blown into the room from the air supply room f by the fan F1, and the return air RA conditioned by the air is returned by the fan F2. The air is sucked into the intake chamber b and blown into the exhaust distribution chamber c. In the exhaust distribution chamber c, a part of the return air RA is exhausted EA, the other is air-conditioned again, and the other part is returned to the room. Is adjusted by the variable damper DM and taken into the air-conditioning room d. In this air-conditioning room, the outside air OA is taken in, mixed with the return air RA that has been adjusted and taken in, and air-conditioned in the heat exchanger C, a humidifier, etc. The air supply SA was again performed indoors at F1.
In addition, the numerical value of FIG. 6 is for the effect of this invention mentioned later.

Further, an air conditioner that mixes outside air and return air, air-conditions the heat exchanger, and supplies the air to the room is also known, for example, in Japanese Patent Application Laid-Open No. 2004-125316. The air supply side needs to be exhausted with an excessively positive pressure. For this reason, the fan needs to be provided in the supply destination room or in the middle of the return air duct.
JP-A-63-91449 JP 2004-125316 A

By the way, the conventional air conditioner that harmonizes the outside air and the air from the room usually has a fan for taking in the return air, and mixes the outside air with the return air to mix it with a heat exchanger or a humidifier. It was necessary to provide two fans in total for supplying harmonized supply air into the room.
For this reason, the central air conditioner becomes large and requires two fans, so it requires a lot of production costs, and it is difficult to adjust and maintain it, and the running cost of operating the two fans is also high. There was a problem of becoming larger.
The present invention has been made in view of the above problems, and in an air conditioner that harmonizes air by mixing outside air from the outside and the atmosphere from the room, usually, a fan for taking in return air It is possible to reduce the size of the central air conditioner by using outside air, mixing it with return air, and using it as a fan for supplying air into the room with air conditioned by a heat exchanger or humidifier. The object is to provide an air conditioner that can reduce production costs, simplify adjustment and maintenance, and reduce the running cost of operating the apparatus.

In order to solve the above problems, the invention of claim 1 is an outside air intake type air conditioner comprising an intake chamber, a distribution exhaust chamber, and an air supply chamber. The intake chamber includes an outside air port, a return air port, a fan, and the like. The outside air from the outside and the return air from the room are mixed by the fan and taken into the intake chamber and sent to the distribution exhaust chamber. The distribution exhaust chamber has an exhaust port, a heat exchanger, and a heat exchanger supply opening. And a part of the mixed air is exhausted from the exhaust port by the fan, and the other air is supplied to the supply opening of the heat exchanger and then sent to the air supply chamber in harmony with the air. An outside air intake type air conditioner having a discharge opening of an exchanger and an air supply opening to a room, and air conditioned by a heat exchanger is supplied to the room by a positive pressure of the fan.
The invention according to claim 2 is the outside air intake type air conditioner according to claim 1 , wherein a damper for adjusting and controlling the amount of air taken in is provided at the outside air port.
A third aspect of the present invention is the outside air intake type air conditioner according to the first or second aspect , wherein a damper for adjusting and controlling an air discharge amount is provided at the exhaust port.

  According to the present invention, in the outside air intake type air conditioner that takes in outside air from the outside and harmonizes the air with the atmosphere from the room, by using one fan, the central air conditioner can be downsized, Since there is only one fan, it is possible to reduce production costs, and since it is only necessary to control one fan, adjustment and maintenance can be simplified, and only one fan is driven and the device is operated. Running costs can also be reduced.

A preferred embodiment of the present invention will be described with reference to the drawings. The concept of the present invention will be described with reference to FIG.
In FIG. 1, the inside of the entire frame 1 of the outside air intake type air conditioner installed in the air hanger A is divided into an intake chamber 2, a distribution exhaust chamber 3, and an air conditioning air supply chamber 4. , 12 are provided, a blower fan 5 is provided in the partition wall 11 between the intake chamber 2 and the distribution exhaust chamber 3, and a blower fan 5 is disposed in the partition wall 11 between the distribution exhaust chamber 3 and the air conditioning supply chamber 4. In addition, a heat exchanger 6 and a vaporizing humidifier 7 are arranged on the partition wall 12 between the distribution exhaust chamber 3 and the air-conditioning air supply chamber 4.
The intake chamber 2 is provided with an indoor return air (RA) inlet 21 and an outside air (OA) intake 22, and the indoor return air (RA) intake 21 is a large-area opening opened indoors. The outside air inlet 22 communicates with the outside air through a duct, and a damper 23 for adjusting the air passage amount is provided in the passage of the outside air inlet 22, and the damper 23 is driven by a damper motor 24. The damper motor 24 is controlled by the air conditioning controller 8 and the indoor controller 81 connected thereto, and adjusts the intake amount of the outside air OA.
The outside air (OA) with the intake amount adjusted and the return air (RA) from the room are mixed in the intake chamber 2 and the mixed air is sucked from the suction port 51 of the fan 5 opened in the intake chamber 2. Then, the air is discharged into the distribution exhaust chamber 3 from the discharge port 52 opened in the distribution exhaust chamber 3.
The distribution exhaust chamber 3 is provided with an exhaust port 31 communicating with the outside via a duct, and an air intake side opening of a heat exchanger (coil) 6 and a humidifier 7 communicating with the heat exchanger (coil) 6. A part of the air is discharged from the outlet 31 to the outside as exhaust (EA), and other air is conditioned to the air intake side opening of the heat exchanger 6 and the humidifier 7 in order to harmonize the air. Supply.

A damper 32 for adjusting the amount of air passing is provided in the passage of the discharge port 31, and the damper 32 is driven by a damper motor 33. The damper motor 33 is controlled by the air conditioning controller 8 and the indoor controller 81 connected thereto, and the exhaust EA The amount of distributed air supplied to the air intake side opening of the heat exchanger 6 and the vaporizing humidifier 7 is adjusted.
In addition, the distribution exhaust chamber 3 has a positive pressure by the fan 5, so that the air that has passed through the heat exchanger 6 and the vaporizing humidifier 7 is directly from the air supply port 41 of the air-conditioning air supply chamber 4. Alternatively, air is supplied (SA) into the room through a duct, and the drive motor 53 of the fan 5 is also supplied with commercial (AC100V) power supply B, and is controlled by the air conditioning control device 8 and the indoor controller 81 connected thereto to enter the room. Control the amount of air supply.

[Activation]
The operation of the above configuration will be described in comparison with a conventional air conditioner. In the conventional two-fan type air conditioner of FIG. 6 described above, for example, the entire amount of outside air (OA) air amount 20 is generated by the fan F1. Supplied for air supply (SA), and therefore the fan F1 is driven without waste.
As described above, in the air conditioner of the present invention, the outdoor outside air (OA) and the indoor return air (RA) are taken in, and the outside air (OA) and the indoor return air (RA) are mixed at this time to distribute the exhaust. It is sent to the chamber 3 and a part of the air is exhausted (EA) and the other air is air-conditioned and supplied (SA). For example, the return air (RA) air amount 100 and the outside air amount 25 (note that In the air conditioner of the present invention, since a part of the outside air (OA) is exhausted (EA) as it is, it is necessary to set the amount of air to be taken in more than the conventional 20 and is assumed to be 25). When the air amount is taken in, the air amount 25 which is a part of the outside air (OA) taken in is exhausted as it is as the exhaust air (EA) by the fan 5, and the other air amount 100 is air-conditioned by the heat exchanger 7 or the like. The air is supplied into the room as an air supply (SA).

Therefore, compared with the conventional outside air intake type air conditioner, the outside air intake type air conditioner of the present invention is such that a part of the outside air (OA) is exhausted (EA) as it is, and the fan 5 performs seemingly useless operation. In addition, the two dampers 23 and 32 must be driven.
However, in this air conditioner, when the amount of air taken in is relatively small, the fan F2 for the return air (RA) of the conventional air conditioner becomes unnecessary, so the following advantages are generally obtained. There is.
(1) Since the entire outside air intake type air conditioner has one fan 5, the production cost can be reduced.
(2) Since the number of the fans 5 is one, the entire central air conditioner can be reduced in size.
(3) Since it is sufficient to control only one fan, adjustment and maintenance can be simplified, and the adjustment of the two dampers 23 and 32 is relatively simple and the operation cost is low.
(4) From the above (1) to (3), the initial cost can be reduced as compared with the conventional air conditioner.
(5) Since only one fan is mainly driven, running costs such as power consumption of the entire air conditioner can be reduced.

Next, the configuration of a specific embodiment of the concept of the present invention will be described with reference to FIGS.
The outside air intake type air conditioner shown in FIGS. 2 to 5 is an embodiment of a floor-mounted air supply up-and-down blowing type. However, as shown in the plan view of FIG. More than half of the lower side of the side frame 13a (right side in FIG. 2) of the frame 1 is the intake chamber 2, and the upper side is the air receiving space 3a of the distribution exhaust chamber 3 that follows this. The space 3b of the distribution exhaust chamber 3 is disposed at the center of the frame 1 occupying a large volume, and further, a space 3c connected to the opening of the coil of the heat exchanger 6 extends to the left rear surface in FIG. The front surface of the rear space is provided with an air-conditioning air supply chamber 4 via a heat exchanger 6 and a vaporizing humidifier 7, and air supply is supplied from the air-conditioning air supply chamber 4 to the right frame. Is provided with an air conditioning control device 8 and an indoor controller 81 integrated therewith. The refrigerant to the coil of the heat exchanger 6 is supplied from the outside of the side frame 13b to the refrigerant inlet 61, and the refrigerant outlet 62 is discharged and circulated.
The configuration of the embodiment apparatus will be described along with the flow of air. The side frame 13a of the frame body 1 is provided with an outside air (OA) port 22 of the intake chamber 2 and on the indoor side of the outside air port 22 of the intake chamber 2. Is arranged opposite to the suction port 51 on the side of the sirocco fan 5 to suck in the outside air and to return the return air (RA) with grill in a wide area more than the lower half of the right front surface of the frame 1 21 is formed, and the return air (RA) from the room is sucked and supplied to the suction port 51 (FIG. 4).

Except for the sirocco fan 5 and the exhaust opening 52 in the intake chamber 2 and the next distribution exhaust chamber 3, the flat partition wall 11a and the vertical partition wall 11b are separated, and the outside air (OA) and the return air (RA) are mixed by the sirocco fan 5. Then, the air is blown from the exhaust opening 52 opened to the upper surface of the sirocco fan 5 to the space 3 a of the distribution exhaust chamber 3 on the upper surface of the intake chamber 2.
The air from the exhaust opening 52 moves to the central space 3b of the distribution exhaust chamber 3 arranged at the center of the frame 1, and the exhaust space 31 is provided on the lower back surface of the central space 3b of the distribution exhaust chamber 3. A part of the mixed outside air (OA) and return air (RA) is exhausted (EA), and most of the other air is supplied to the air-conditioning air supply chamber 4.
The air-conditioning air supply chamber 4 is arranged on the front side of the half of the entire frame 1 on the side frame 13b side (left side in FIGS. 2 and 3). The rear side of the air-conditioning air supply chamber 4 on the wall side is the distribution exhaust chamber. 3, a heat exchanger 6 and a vaporizing humidifier 7 are provided together with a partition wall 12 between the space 3 c of the distribution exhaust chamber 3 and the air-conditioning air supply chamber 4. Most of the air is conditioned and supplied to the air conditioning supply chamber 4.
The air-conditioning air supply chamber 4 is supplied to the duct from the upper air supply port 41a at the top of the room and directly to the floor from the lower air supply port 41b at the bottom.

In this embodiment, the damper and fan drive are not particularly described, but even if the outside air intake 22 is provided with the damper 23 for adjusting the air passage amount and the damper motor 24 for driving the damper 23, the air passage is also passed through the exhaust port 31. A damper 32 for adjusting the amount and a damper motor 33 for driving the damper may be provided. The dampers 23 and 32 are provided for controlling the static pressure during the ventilation operation and are not always operated. The control 51 is a variable speed driver in order to constantly blow the air-conditioning air volume appropriately. In any case, the outside air intake type air conditioner is appropriately controlled and operated by the air conditioning control device 8, and the operation thereof has the advantages described in the outline of the present invention.
Needless to say, the present invention is not limited to the above-described embodiments as long as the features of the present invention are not impaired.

It is a system diagram explaining the outline of the outside air intake type air conditioner of the present invention. It is a top view of one example of the present invention. FIG. 3 is a front view of FIG. 2. FIG. 3 is a right side view of FIG. 2. FIG. 3 is a left side view of FIG. 2. It is a system diagram explaining the outline of the conventional outside air intake type air conditioner.

Explanation of symbols

OA ... Outside air, RA ... Return air, EA ... Exhaust, SA, SA1, SA2 ... Supply air,
DESCRIPTION OF SYMBOLS 1 ... Whole frame, 11, 11a, 11b, 12 ... Partition, 13a, 13b ... Side frame,
2 ... intake chamber, 21 ... return air intake, 22 ... outside air intake 23, 32 ... damper, 24, 33 ... damper motor 3 ... distribution exhaust chamber, 3a, 3b, 3c ... space of distribution exhaust chamber,
4 ... Air-conditioning air supply chamber, 41, 41a, 41b ... Air supply port 5 ... Fan (sirocco fan), 51 ... Fan intake port,
52 ... Fan outlet, 53 ... Fan drive motor,
6 ... heat exchanger, 61 ... refrigerant outlet, 62 ... refrigerant inlet, 7 ... (vaporization type) humidifier,
8 ... Air conditioning control device, 81 ... Indoor controller,

Claims (3)

  In an outside air intake type air conditioner composed of an intake chamber, a distribution exhaust chamber, and an air supply chamber, the intake chamber is provided with an outside air port, a return air port, and a fan so that the outside air from the outside and the return air from the room are provided. Mixed by the fan, taken into the intake chamber and sent to the distribution exhaust chamber. The distribution exhaust chamber is provided with an exhaust port, a heat exchanger, and a supply opening of the heat exchanger, and a part of the mixed air is exhausted by the fan. The air is exhausted from the outlet, and other air is supplied to the supply opening of the heat exchanger and air-conditioned, and then sent to the air supply chamber. The air supply chamber is provided with a heat exchanger discharge opening and an indoor air supply opening. An outside air intake type air conditioner characterized in that air conditioned by a heat exchanger is supplied indoors by the positive pressure of the fan. The outside air intake type air conditioner according to claim 1 , wherein a damper for adjusting and controlling an air intake amount is provided at the outside air port. The outside air intake type air conditioner according to claim 1 or 2 , wherein a damper for adjusting and controlling an air discharge amount is provided at the exhaust port.

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