JP2003148765A - Air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air conditioner with an outdoor unit and an indoor unit integrally housed in a housing in which a duct to communicate the outdoor unit with the indoor unit is shortened without increasing the distance between a first damper to supply the indoor air into the outdoor unit for ventilation and a second damper to supply the outside air. SOLUTION: The first damper 31 is located at the position substantially at the center of the outdoor unit 10 in the housing 6, and the second damper 32 is disposed in the vicinity of a boundary of the outdoor unit 10 on the indoor unit 20 side to shorten the distance between the second damper 32 and the first damper 31. The duct 30 to communicate the outdoor unit 10 with the indoor unit 20 is shortened while a wire cable 34 to connect these dampers to each other is kept short, and the air conditioner 1 capable of supplying air is provided at a low cost.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner attached to a wall surface of a building such as a condominium, a hotel, or a tenant building.

[0002]

2. Description of the Related Art FIG. 3 shows an individual air conditioner installed in a peri-counter so as to individually air-condition an individual room or a conference room of a building such as an apartment or a hotel. The air conditioner 100 is a heat pump type air conditioner, and includes an outdoor unit section 110 for exchanging heat with the outside air A taken in through the opening 4 of the wall surface 3,
Indoor unit 12 that takes in indoor air B and exchanges heat
0 is an air conditioner called a through-the-wall type that is horizontally arranged in the housing 130.

The outdoor unit section 110 is provided with two outdoor blowers 111a and 111b and an outdoor heat exchanger 112, and the outside air A sucked by the outdoor blowers 111a and 111b through an opening 4 provided in the wall surface 3. Is guided to the outdoor heat exchanger 112 to exchange heat, and is exhausted to the outside (or the outside) from the opening 4 again.

The indoor unit 120 is provided with two indoor blowers 121a and 121b and an indoor heat exchanger 122, and the indoor air B sucked by the indoor blowers 121a and 121b is heated by the indoor heat exchanger 122. The air is exchanged, and cold air or hot air is blown into the room from above as indicated by arrow D to cool or heat the room. The outdoor heat exchanger 112 and the indoor exchanger 122 are connected by a refrigerant circuit in which a refrigerant circulates by a compressor (not shown).

The air conditioner 100 has a housing 130.
A first damper (exhaust damper) 141 for exhausting indoor air to the outside of the room is provided on the side surface of the outdoor unit section 110. Therefore, by opening the exhaust damper 141, the indoor air C taken into the outdoor unit section 110 is exhausted to the outside by the outdoor blowers 111a and 111b.

On the other hand, the outdoor unit 110 and the indoor unit 120 are communicated with each other via a duct 140 arranged at the center of the housing 130.
A second damper (intake damper) 142 for guiding the outside air E into the room is provided in the opening 140a on the side of the outdoor unit section 110. Therefore, by opening the intake damper 142, the outside air E enters the indoor unit section 120 through the duct 140 and is supplied indoors as fresh air.

In order to keep the pressure in the room constant, the amount of air C exhausted from the exhaust damper 141 and the intake damper 1
It is desirable that the amount of outside air E drawn from 42 be balanced. Therefore, in the air conditioner 100, the exhaust damper 141 and the intake damper 142 are connected by the wire cable 143, and both dampers 141 and 142 are connected by using an appropriate actuator such as a motor.
The room is ventilated by opening and closing at the same time.

[0008]

This air conditioner 10
At 0, an extension duct 145 extending toward the exhaust damper 141 side is attached to the central communication duct 140. This structure has an exhaust damper 141 and an intake damper 142.
Since they are close to each other, they can be easily connected using a short wire cable, and the opening of each damper can be easily managed.
The degree of control accuracy of the opening also increases. However, the extension duct 145 is costly and therefore it is desirable that this duct be short. In addition, opening the front panel for inspection and maintenance is also an obstacle. On the other hand, if the extension duct 145 is cut, the wire cable will be extended, so both the dampers 141 and 142 will be extended.
Is difficult to control with a single wire, the control accuracy is reduced, and it is necessary to separately provide a control device, which causes a cost increase.

Therefore, in the present invention, the control of the exhaust damper and the intake damper can be accurately performed at low cost, and further, the length of the duct connecting the outdoor unit and the indoor unit can be shortened to reduce the cost and maintenance. It is an object of the present invention to provide an air conditioner capable of improving the property.

[0010]

Therefore, in the present invention, the position of the exhaust damper is moved to the center instead of extending the duct laterally. That is, in the air conditioner of the present invention, the outdoor unit portion that exchanges heat with the taken-in outside air and the indoor unit portion that takes in the indoor air and exchanges heat are provided in the housing in a horizontal or horizontal direction, and the outdoor unit Section that communicates the indoor section with the indoor unit section, a first damper that takes in indoor air into the outdoor unit section, a second damper that is provided in an opening on the outdoor unit section side of the duct, and first and second And a control means for controlling the damper opening by connecting the dampers with a connecting member, and an outdoor blower for blowing the outside air downward or upward is arranged at the upper part or the lower part of the outdoor unit part. Of the outdoor unit is located in the upper or lower part of the housing in the approximate center of the outdoor unit, and the second damper is located near the boundary of the outdoor unit on the indoor unit side. It is location.

In the air conditioner of the present invention, since the first damper is arranged at a position approximately in the center of the outdoor unit portion above or below the housing, the communicating duct is extended in the direction of the first damper. Without first damper and second
The distance between the damper and the damper is reduced, and a short connecting member, for example, a wire cable can be used to connect these dampers. Therefore, the second damper can be arranged in the vicinity of the boundary of the outdoor unit section on the side of the indoor unit section, and the communication duct only needs to be extended to the vicinity of the boundary of the outdoor unit section on the side of the indoor unit section. It is possible to arrange the communication duct so that it does not become the obstacle or the most obstacle when performing maintenance or inspection. Further, since the connecting member is short, the opening degree of the first and second dampers does not change due to its extension and the like, and highly accurate control can be performed with a simple control mechanism.

Further, many effects can be obtained by disposing the first damper for exhaust on the upper part or the lower part of the outdoor unit. First, when the two outdoor blowers are horizontally arranged in the outdoor unit part, the first damper can be arranged at a position between these two outdoor blowers. If the first damper that takes in the indoor air is located on the side surface, only the capacity of one of the outdoor blowers can be utilized, so the differential pressure that can be secured near the first damper is small, and in order to secure the necessary ventilation volume. Requires a relatively large size damper, and requires a high power motor to control it. In contrast,
By disposing the first damper between the two outdoor blowers, it becomes easy to secure the differential pressure, the damper size can be reduced, the motor capacity for controlling the damper can be reduced, and the control accuracy can be improved. Further, the indoor air sucked into the outdoor unit is taken into the two outdoor blowers almost evenly, and is exhausted through the outdoor heat exchanger, so that the load on the outdoor heat exchanger becomes uniform, and in this respect also, the heat exchange efficiency is improved. Will tend to improve.

Further, when the first damper is arranged on the side of the outdoor blower, the indoor air sucked from the first damper is almost equal to the path for sucking outside air from the outside and guiding it to the heat exchanger. Since they merge from a right angle direction, the air flow is likely to be disturbed. Therefore, it causes pressure loss and noise, and the capacity of the air conditioner decreases. On the other hand, when the first damper is arranged between the two outdoor blowers, the room air sucked from the first damper joins in parallel to the flow of the outside air, so that the turbulence of the air flow is small. Therefore, it is possible to prevent the pressure loss and the noise from becoming small and the performance of the air conditioner from decreasing.

Further, when the two outdoor blowers are arranged side by side, the motors for both shafts are often arranged between them to drive them in common. In this case, by arranging the first damper arranged in the center of the outdoor unit portion in the vicinity of the motor, it is possible to obtain the effect of cooling the motor by the taken-in indoor air. In a situation where the outdoor temperature is high, that is, during the cooling operation, the indoor air sucked from the first damper is cooled, so the air conditioner of the present invention is:
The motor can be cooled efficiently, and the exhaust gas can be discharged to the outside of the room.

The upper and lower positions of the first damper fluctuate depending on the position of the outdoor blower arranged in the outdoor unit section. For example, when the outdoor blower is arranged in the upper part of the housing so that the blowing direction is downward, the first damper is arranged in the upper part of the housing. This arrangement
Further, by arranging the indoor blower with the blowout direction facing upward below the indoor unit, the duct is arranged so as to connect the outdoor unit and the indoor unit almost linearly. Is possible.
That is, in the layout shown in FIG. 3 in which the blowing directions of the outdoor blower and the indoor blower are the same, a straight duct can be adopted, while a crank-shaped duct is used. Therefore, the space occupied by the duct that connects the outdoor unit portion and the indoor unit portion can be reduced, and the air conditioner can be made compact. In addition, since the straight duct reduces the ventilation resistance of the duct as compared with the crank-shaped duct, even if the duct is made thin, the same air volume as the conventional crank-shaped duct can be secured. Therefore, the size of the duct can be further reduced, and the air conditioner can be made more compact.

The present invention is an air conditioner installed in a perimeter zone of a building where individual air conditioning is required, by arranging the outdoor unit part so as to take in outside air through an opening provided in the wall surface of the building. Applicable to

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in more detail below with reference to the drawings. FIG. 1 shows an outline of an air conditioner according to the present invention. The air conditioning apparatus 1 of the present example is an air conditioning apparatus that is constructed in a state of being built in the peri-counter 2 provided along the wall surface 3 and is also referred to as a through-the-wall type. Therefore, the air conditioner 1
Is an outside air unit or an outdoor unit 10 for exchanging heat with the outside air A taken in through the opening 4 provided in the wall surface 3, and an inside air unit or an indoor unit 20 for taking in the indoor air B and exchanging heat. An integrated air in which the compressor 5 arranges a refrigerant cycle in which the refrigerant circulates between the heat exchanger 12 of the outdoor unit portion 10 and the heat exchanger 22 of the indoor unit portion 20 is arranged inside the horizontally long housing 6. It is a harmony device.

The outdoor unit portion 10 and the indoor unit portion 20 are arranged in the lateral direction, the lateral direction, or the horizontal direction. The outdoor unit section 10 includes two outdoor blowers 11a and 11b arranged in the upper part of the housing 6 so that the blowing direction is downward, and an outdoor heat exchanger 12 arranged below these outdoor blowers 11a and 11b. , A common drive motor 13 arranged between these two outdoor blowers 11a and 11b. An intake port 61 is provided in the housing 6 at the rear of the outdoor unit section 10 so as to face the opening 4 of the wall surface 3, and the outdoor blowers 11a and 11b of the outdoor unit section 10 have the intake port 61 and the opening 4 respectively. After the outside air A is sucked in through the indoor heat exchanger 12 and heat is exchanged through the outdoor heat exchanger 12, the indoor unit 2
The air is exhausted to the outside of the building through the opening 4 from the exhaust port 62 provided at the rear of 0.

The indoor unit 20 has an indoor blower 2 arranged in a lower portion of the housing 6 so that the blowing direction is upward.
1a and 21b, and the indoor heat exchanger 22 arranged on these indoor blowers 21a and 21b. Therefore, in the indoor unit portion 20, the indoor air B is sucked in from below the housing 6 and the indoor heat exchanger 22.
After the temperature is adjusted by, the air is blown out into the room through the opening 63 provided in the upper portion of the housing 6 and the grill 8 provided in the peri-counter 2. As a result, the room is cooled and heated.

The air conditioner 1 also includes a duct 30 that connects the outdoor unit 10 and the indoor unit 20,
A first damper (exhaust damper) 31 that takes in the indoor air B into the outdoor unit section 10, a second damper (intake damper) 32 provided in an opening 30a of the duct 30 on the side of the outdoor unit section 10, and an exhaust damper. 31 and intake damper 32
Control device 33 for controlling the opening degree (damper opening degree). The exhaust damper 31 and the intake damper 32 are connected by a wire cable 34 serving as a connecting member. The wire cable 34 is driven by an actuator such as a motor 35 from the control device 33. When the room is ventilated, the motor 35 is driven to open both dampers 31 and 32 via the wire cable 34. The rotation amount of the motor 35 is transmitted to the dampers 31 and 32 by the wire cable 34, and the opening degrees of the dampers 31 and 32 are managed or controlled.

In the air conditioner 1, when the exhaust damper 31 is opened, the outdoor unit 11 has the outdoor blowers 11a and 1a.
The indoor air C is sucked from 1b and is exhausted to the outside (outdoor) through the outdoor heat exchanger 12 together with the outside air A. On the other hand, when the intake damper 32 is opened, a part E of the outside air A taken into the outdoor unit section 10 is supplied to the indoor unit section 20 through the communication duct 30. And the indoor unit section 20
Then, the air is sucked into the indoor blowers 21a and 21b together with the sucked indoor air B, and the temperature thereof is adjusted by the indoor heat exchanging unit 22 before being supplied to the inside of the room. As a result, air mixed with fresh air is output to the room, and a part of the air in the room is ventilated. In order to keep the pressure in the room constant, it is necessary to balance the outside air supplied to the room and the air discharged from the room. Therefore, it is desirable to control the exhaust damper 31 and the intake damper 32 so as to cooperate with each other as in the air conditioner 1 of this example.

In the present example, the exhaust damper 31 is the housing 5
It is arranged at a position substantially in the center of the outdoor unit portion 10 above and between the outdoor blowers 11a and 11b. Further, the intake damper 32 is arranged near the boundary of the outdoor unit section 10 on the indoor unit section 20 side and below the control box 39 in which the control section 33 and the like are housed. Then, the intake damper 32 opens and closes the opening 30a on the outdoor unit side of the communication duct 30 that linearly extends so as to penetrate below the control box 32.

Thus, in the air conditioner 1 of this example,
By arranging the exhaust damper 31 in the center of the outdoor unit section 10, the length of the communication duct 30 can be shortened without extending the distance between the exhaust damper 31 and the intake damper 32.
The arrangement makes use of the advantages of the present invention described above. These merits will be described with reference to FIG. 2 schematically showing the peripheral portion of the outdoor unit section 20.

First, since the exhaust damper 31 and the intake damper 32 are connected by the short wire cable 34,
The extension of the wire cable 34 is small, and the exhaust damper 31
Also, the influence on the opening and closing tolerance of the intake damper 32 is small. Therefore, the exhaust damper 31 and the intake damper 32
The opening degree of the dampers 31 and 3 can be easily controlled by a simple mechanism such as the wire cable 34.
2 can be collectively controlled. For this reason, it is possible to control with good accuracy at low cost.

At the same time, the wire cable 34 does not have to extend the communication duct 30 into the outdoor unit 20.
Since the length of the duct can be set within an appropriate range, the duct length can be shortened and the manufacturing cost can be reduced. Moreover, since the duct length is shortened, the differential pressure is reduced and the duct diameter can be reduced. Therefore, also in this respect, the manufacturing cost can be reduced. Furthermore, since the communication duct 30 has a compact and simple shape as a whole, the duct space is small, the arrangement of devices in the housing is easy, and the air conditioner 1 can be easily maintained and inspected. . In this example, the communication duct 30 is linearly arranged by arranging so that the communication duct 30 penetrates below the control panel 39, and further, the communication duct 30 maintains the front panel side of the housing 6 for maintenance. Communication duct 30 when removed
The panel side is also detached.

Further, in the air conditioner 1 of this example, the exhaust damper 31 of this example has the outdoor blowers 11a and 1a.
The indoor air C, which is arranged between the 1b and 1b and is taken in through the exhaust damper 31, is sucked by the two outdoor blowers 11a and 11b. Therefore, it becomes easy to secure a differential pressure in the exhaust damper 31, and a target exhaust amount can be secured with a small-sized exhaust damper. And
By adopting the small exhaust damper 31, the power of the motor required to open and close the exhaust damper 31 can be reduced, so that the size of the control motor 35 can be reduced and the cost can be saved. Further, since the differential pressure before and after the control damper 31 can be secured, the accuracy of flow rate control is also improved.

Furthermore, since the position of the exhaust damper 31 is between the two outdoor blowers 11a and 11b, the flow for taking in the indoor air C is substantially parallel to the flow for taking in the outside air A, and these air flows are Mixes smoothly. Therefore, the pressure loss due to the intersection of these two flows is small, and the noise due to the turbulence of the air flow is small. Therefore, it is possible to provide the air conditioner 1 that is energy-saving, quiet, and power-saving.

The position of the exhaust damper 31 also corresponds to the position of the common motor 13 arranged between the two outdoor blowers 11a and 11b. Therefore, the damper 31 can be arranged so that the room air C taken from the exhaust damper 31 flows near the motor 13. Thereby, the motor 13 can be cooled by the indoor air C taken into the outdoor unit section 10. In particular, when the temperature of the outdoor air A is high, the indoor air C is cooled, so the motor 13 can be efficiently cooled by the cool air sucked to exhaust the air, and the motor can be driven under conditions of high motor efficiency.

Further, in the outdoor unit section 10, the outdoor blowers 11a and 11b are arranged in the upper part of the housing 6 so that the blowing direction is downward, and in the indoor unit section 20, the indoor blowers 21a and 21b are arranged in the lower part of the housing 6. Is arranged so that the blowing direction is upward. Therefore, the blowing direction or position of the outdoor blowers 11a and 11b becomes the sucking direction or position of the indoor blowers 21a and 21b.
The duct 30 that connects the indoor unit 20 can be a straight duct that extends substantially straight in the lateral direction. Therefore, as described above, in this example,
By arranging the duct 30 so as to penetrate below the control box 39, a straight duct is actually adopted. Since the duct 30 has a straight shape, the ventilation resistance can be reduced. Therefore, a thin duct having a small cross-sectional area can be used, and a space-efficient arrangement can be achieved.

In the above description, the outdoor unit section and the indoor unit section of the two-blower system having two blowers are explained as an example. However, even if only one blower is provided in each unit section, a wire cable is used. And the advantage of duct length can be obtained. However, as described above, the present invention is particularly suitable for an air conditioning apparatus that employs a blower such as a sirocco fan, which is connectable to a coaxial type motor by at least a plurality of blowers, as described above.
Further, in the air conditioner 1, although it is a flow path for taking in the outside air from the outdoor unit portion 10 into the outdoor unit portion and exhausting the taken-in outside air to the outside from the rear side of the indoor unit portion, It is also possible to use a flow path that takes in outside air and exhausts the outside air to the outside from the rear side of the outdoor unit section.

[0031]

As described above, according to the air conditioner of the present invention, in the air conditioner in which the outdoor unit portion and the indoor unit portion are integrally housed in the housing, the outdoor unit portion is used for ventilation in the room. The first damper for taking in air is arranged at a position approximately in the center of the outdoor unit portion above or below the housing, and the second damper for taking in outside air is arranged near the boundary of the outdoor unit portion on the indoor unit portion side. However, the distance between the second damper and the first damper is shortened. Accordingly, the duct that connects the outdoor unit portion and the indoor unit portion can be shortened without extending a connecting member such as a wire cable that connects these dampers, and an air conditioner that can be supplied at low cost can be provided.

[Brief description of drawings]

FIG. 1 is a diagram showing an outline of an air conditioner according to the present invention.

FIG. 2 is a diagram schematically showing a peripheral portion of an outdoor unit portion of the air conditioner shown in FIG.

FIG. 3 is a diagram showing an outline of a conventional air conditioner.

[Explanation of symbols]

1 Air conditioner 6 housing 10 Outdoor unit 11a, 11b outdoor blower 12 outdoor heat exchanger 13 motor 20 Indoor unit 21a, 21b indoor blower 22 Indoor heat exchanger 31 1st damper (exhaust damper) 32 Second damper (intake damper) 33 Control device 34 wire cable

Continued front page    (72) Inventor Takashi Ono             1000 Toyoshina, Toyoshina-cho, Minamiazumi-gun, Nagano Prefecture             Inside GC Co., Ltd. F-term (reference) 3L049 BA03 BB01 BB03 BB07 BC02                 3L051 BD02

Claims (8)

[Claims] 1. An air conditioner in which an outdoor unit part for exchanging heat by the taken-in outside air and an indoor unit part for taking in the indoor air and exchanging heat are horizontally arranged side by side in a housing. A duct communicating the unit part and the indoor unit part; a first damper for taking in indoor air into the outdoor unit part; a second damper provided in an opening of the duct on the outdoor unit side; An outdoor blower having a control means for connecting the first and second dampers with a connecting member to control a damper opening, and for blowing the outside air downward or upward at an upper portion or a lower portion of the outdoor unit portion. And the first damper is disposed at a position substantially in the center of the outdoor unit portion above or below the housing,
The said 2nd damper is an air conditioning apparatus arrange | positioned near the boundary by the side of the indoor unit part of the said outdoor unit part. 2. The air conditioner according to claim 1, wherein the connecting member is a wire cable. 3. The outdoor fan unit according to claim 1, wherein the two outdoor blowers are horizontally arranged, and the first damper is arranged at a position between the outdoor blowers. Harmony device. 4. The outdoor fan unit according to claim 1, wherein the two outdoor blowers are horizontally arranged, and a common motor for driving the outdoor blowers is provided between the outdoor blowers. The air conditioner in which the first damper is arranged near the motor. 5. The air blower according to claim 3, wherein the outdoor blower is arranged in an upper portion of the housing so that a blowing direction is downward, and the first damper is arranged in an upper portion of the housing. Harmony device. 6. The indoor blower according to claim 5, wherein an indoor blower having a blowing direction directed upward is disposed below the indoor unit portion, and the outdoor unit portion and the indoor unit portion are substantially linear. An air conditioner in which the duct to be connected is arranged. 7. The air conditioner according to claim 6, wherein the duct extends straight in the lateral direction. 8. The air conditioner according to claim 1, wherein the outdoor unit portion is arranged so as to take in outside air through an opening provided on a wall surface of a building.