JP2930172B2 - Outdoor air conditioner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an outdoor air conditioner in which a main mechanism is incorporated in an outdoor unit to constitute an air conditioner for both cooling and heating.

[0002]

2. Description of the Related Art In general-purpose air conditioners installed in ordinary houses, an air conditioner dedicated to cooling and a heat pump air conditioner combined with air conditioning and heating are installed in an indoor unit mounted on a wall surface of a room and an outdoor unit. And an outdoor unit, which is connected to each other by a refrigerant passage.

[0003] When installing these air conditioners, through holes are formed in advance in the walls separating the indoor and outdoor areas.
While the indoor unit is attached to the indoor wall surface on the through hole side, as shown in FIG.
5 is arranged. And a refrigerant pipe 30 composed of a pair of two
Is vertically extended along the outer wall of the building, and the upper end 30a is inserted into the through hole H to connect to the connection port of the indoor unit, while the lower end 30b is connected to the connection port of the outdoor unit.

[0004] Thus, a refrigerant passage is formed between the indoor unit and the outdoor unit 25, and a refrigeration cycle is used in an air conditioner dedicated to cooling, and a refrigeration cycle and a heating cycle are used in an air conditioner combined with cooling and heating. Is configured.

In the case of a refrigeration cycle, the outdoor unit 25
The refrigerant discharged from the compressor (heat exchanger) is sent to a condenser (heat exchanger), condensed by the condenser, and then sent out to the evaporator of the indoor unit via the refrigerant pipe. The refrigerant gas evaporated by the evaporator is sent to the compressor of the outdoor unit 25 via the refrigerant pipe 30 and the pressure reducer, is compressed to a high pressure, and is discharged again.

[0006] In the heat pump type air conditioner, the heating cycle is in the opposite direction to the above, but in any of the above-mentioned cycles, heat is exchanged by sucking outside air with an outdoor blower fan and refluxing the condenser. I do. When the indoor air is recirculated through the evaporator by the indoor blower fan, cool air or warm air is blown into the room by heat exchange, and the room is cooled or heated.

[0007]

In this type of air conditioner, the indoor unit is mounted on the inner wall, while the outdoor unit 25 is installed outdoors, and both are connected to the refrigerant pipe 3.
However, there is a problem that the installation work is large-scale because the connection work is required due to 0. That is, the indoor unit has a considerable weight since it has a built-in evaporator, indoor blower fan, indoor fan motor and the like, and has to be mounted after reinforcing the inner wall.

Further, since the refrigerant pipe 30 is made of a copper pipe,
In addition to the work of processing the connection end during plumbing,
After installing the refrigerant pipe 30, it is necessary to enclose the refrigerant in the outdoor unit 25, and such an operation is extremely difficult for an amateur. Therefore, it is difficult to move this type of air conditioner once it has been set up, and even if you want to move it to the next room, not only for moving, you still need to ask a professional contractor, and handling problems will arise. Was left.

The present invention has been made in view of the above problems, and an object of the present invention is to provide an outdoor air conditioner that simplifies the structure of an indoor unit and simplifies installation and relocation.

[0010]

According to the present invention, a compressor, a first heat exchanger, a second heat exchanger, a decompressor and a cooling / heating switching means are connected to achieve a cooling cycle or a cooling cycle. A refrigerant circulation system forming a heating cycle, an outdoor fan provided on the first heat exchanger side, an air storage section in which the second heat exchanger is arranged, and an opening of the air storage section An outdoor unit comprising an air supply / exhaust fan provided on the side, and an indoor unit provided with an air supply / exhaust port, and a supply / exhaust port of the indoor unit through a through hole formed in a wall partitioning the indoor / outdoor. An air supply / exhaust pipe having one end communicating with the other end connected to the opening of the air reservoir through the air supply / exhaust fan, and switching the cooling / heating switching means to a cooling or heating cycle to change the outdoor Unit cooling and heating By rotating the air supply / exhaust fan forward, indoor air is sucked from the indoor unit side and stored in the air storage unit, and after cooling or heating, the air supply / exhaust fan is rotated in the reverse direction to cool air in the air storage unit. Alternatively, a control means for performing control for discharging warm air from a supply / exhaust port of the indoor unit is provided.

[0011]

When the room is cooled or heated by the outdoor air conditioner of the present invention, the control means switches the cooling / heating switching means to the cooling or heating cycle and starts the outdoor unit. Also, the air supply / exhaust fan is rotated forward to draw indoor air from the air supply / exhaust port of the indoor unit and send it out to the air storage unit. Here, in the cooling cycle, the refrigerant flows through the path of the compressor, the first heat exchanger, the pressure reducer, and the second heat exchanger via the cooling / heating switching means, and the first heat exchanger is connected to the outdoor. While the heat exchanger exchanges heat with the outside air, the second heat exchanger provided in the air storage cools the stored air. Also,
In the heating cycle, the refrigerant flows through the path of the compressor, the second heat exchanger, the decompressor, and the first heat exchanger via the cooling / heating switching means, and the first heat exchanger communicates with the outside air by the outdoor fan. While performing heat exchange, the second heat exchanger provided in the air storage unit heats the stored air. When the stored air is cooled or heated in this way, the control means rotates the air supply / exhaust fan in the reverse direction to blow cool air or warm air in the air storage unit from the air supply / exhaust port into the room. Subsequently, the air supply / exhaust fan is operated to suck the room air to be stored in the air storage section, and after cooling or heating, the air supply / exhaust fan is operated to blow air into the room, whereby the room is air-conditioned.

As described above, the cooling and heating of the room is performed by the outdoor unit installed outside the room, and the indoor unit on the indoor side sucks or discharges air from the air supply / exhaust port through the air supply / exhaust pipe. , The two units are only connected by a supply / exhaust pipe. Therefore, when installing the outdoor-installed air conditioner in a general house or the like, a through hole is formed in a wall partitioning the inside and outside of the room, and an air supply / exhaust pipe is inserted into the through hole so that the end is connected to the indoor unit. The connection can be made so as to communicate with the unit, so that the new installation work is simplified.
In addition, since the indoor unit and the air supply / exhaust pipe can be easily attached and detached, the outdoor air conditioner can be easily relocated.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is an overall configuration diagram of an outdoor air conditioner according to the present invention.

This outdoor-installed air conditioner is applied to a heat pump type air conditioner which is used for both cooling and heating.
And the outdoor unit 2 are connected by a supply / exhaust pipe 3 to form a supply / exhaust flow passage inside and outside the room, and the control unit controls the indoor cooling / heating.

As shown in FIGS. 1 and 2, the indoor unit 1 is provided with a supply / exhaust port 1b on the front surface of a main body 1a, and a deflection plate capable of changing a wind direction is mounted on the supply / exhaust port 1b. Further, a connection port 1c is formed on the back surface of the main body so that the supply / exhaust pipe 3 can be connected. In addition, on one side of the body,
The housing 1d is provided so that a remote control R for operation can be detached, and the remote control R can be used to perform a cooling / heating operation. 1e
Is a display unit for displaying an operation state. Although not shown, the indoor unit 1 has a built-in temperature sensor, and a detection signal from the temperature sensor is sent to the control unit to enable room temperature adjustment according to the set temperature.

The outdoor unit 2 is shown in FIGS.
As shown in the figure, a heat source unit for forming a cooling and heating cycle, an air storage tank 17 for storing room air, a circuit board for forming an electric circuit (not shown) including a control unit, and the like are housed in the main body 2a.

The main body 2a is a vertically long box, and has an air inlet 4 formed on a front panel 2b and air outlets 5 and 6 formed on side panels 2d and 2e. Then, a partition plate 7 is provided on the lower side in the main body 2a, and the partition plate 7 and the bottom plate 2 are provided.
g and the front panel 2b, an accommodating portion 16 is formed, and an air storage tank 17 is formed between the partition plate 7, the top plate 2f, the bottom plate 2g, and the back panel 2c. Also,
An L-shaped upper plate 8 is provided on the side of the rear panel 2c of the main body 2a, and a partition wall 9 is provided upright on a lower side of the upper plate 8, and an intake passage for introducing room air to the rear panel 2c. 18 are formed.

The accommodation portion 16 forms an inclined surface by curving the upper portion of the partition plate 7 to facilitate the flow of air. A first heat exchanger 13 constituting the refrigerant flow system 10 shown in FIG. 6 is provided upright at the air suction port 4 on the front side of the housing section 16. In addition, the compressor 11 is arranged on one side of the housing 16, and a cooling / heating switching unit provided with the decompressor 14 and the four-way switching valve 12 is arranged.

An outdoor fan motor 19 is fixed to the partition plate 7 with the outdoor blower fan 20 facing the first heat exchanger 13 side. Thereby, when the outdoor fan motor 19 is operated, the outdoor blower fan 20 sucks outside air from the air suction port 4 as shown by the arrow A, passes through the first heat exchanger 13, and The heat is exchanged by discharging to the outside.

The air storage tank 17 is a space having a large air volume, including the intake passage 18, except for the storage section 16, and is capable of storing a certain amount of room air. The air storage tank 17 has a hole in the center of the upper plate 8 and an opening 17a.
Is formed above the opening 17a.
Is arranged. The supply / exhaust fan 21 is an axial fan, and has a connecting portion 21a protruding from the top plate 2f and a lower portion communicating with the air storage tank 17. The supply / exhaust fan 21 sucks room air through the supply / exhaust pipe 3 by forward rotation, and sends out stored air to the supply / exhaust pipe 3 by reverse rotation.

A second heat exchanger 15 is erected on the lower side of the partition wall 9 constituting the intake passage 18, and the supply / exhaust fan 21 rotates forward and the room air introduced into the intake passage 18 is supplied to the second heat exchanger 15. The air can pass through the second heat exchanger 15 and flow out to the inside 17c of the air storage tank 17.

The opening 17 is provided above the partition wall 9.
a corresponding to the exhaust port 17b.
An open / close valve 22 is attached to the side. This on-off valve 22
Is formed in such a size that the exhaust port 17b and the opening 17a can be closed. The base end 22a is rotatably supported on the lower side of the upper plate 8, and is configured to move between three positions by an opening / closing mechanism (not shown).

That is, at the first position (dotted line in FIG. 4) X, the exhaust port 17b is closed to open the opening 17a,
At a second position (two-dot chain line in the figure) Y, the opening 17a is closed to open the exhaust port 17b, and at a third position (solid line in the figure) Z, the opening 17a and the exhaust port are kept horizontally. 1
7b is opened.

In the refrigerant flow system 10, as shown in FIG. 6, a compressor 11 is connected to a four-way switching valve 12 by a refrigerant pipe.
This four-way switching valve 12 is connected to a first heat exchanger 13. The first heat exchanger 13 is provided with a decompressor 14
Is connected to a second heat exchanger 15 through a four-way switching valve 12.
It is connected to the.

As a result, a refrigerant passage is formed, and the flow of the refrigerant is changed by switching between cooling and heating by the control unit, thereby forming a cooling cycle or a heating cycle. The solid line direction in the figure is a cooling cycle, and the chain line direction is a heating cycle.

The control section is a microcomputer having a memory, a timer, a CPU, and the like, and controls air conditioning based on signals from the remote controller R, sensors, and the like. When a cooling / heating start signal is input, the cooling / heating switching unit is switched to a cooling or heating cycle to start the cooling / heating operation of the outdoor unit 2.

Further, based on the set time of the timer, the supply / exhaust fan 21 is rotated forward and the open / close valve 2 is opened.
2, the indoor air is sucked from the indoor unit 1 side and stored in the air storage tank 17, and after this storage, the on-off valve 22 is closed to cool or heat the stored air, and opened and closed after a required time. The control of opening the valve 22 and rotating the air supply / exhaust fan 21 in the reverse direction to blow the cool air or warm air from the air storage tank 17 to the room I from the air supply / exhaust port 17b of the indoor unit 1 is performed.

Furthermore, based on the temperature setting signal and the detection signal from the temperature sensor, the room temperature is monitored, and the respective devices are turned on / off so as to be always kept at an appropriate temperature.

The supply / exhaust pipe 3 has a diameter substantially equal to the outer diameter of the connection port 1c and the connecting portion 21a, as shown in FIG.
The diameter of the through hole H for construction formed in the outer wall W of the house in advance is substantially smaller than the inner diameter of the through hole, so that the refrigerant pipe inserted into the through hole H can be easily inserted even after the refrigerant pipe is removed. The supply / exhaust pipe 3 is formed of a material having heat insulation properties and flexibility, and which can be easily cut or connected.

When the outdoor air conditioner is installed, a through hole H is formed in the upper part of the outer wall W in a house as shown in FIG. A pedestal D is provided. Then, while the outdoor unit 2 is installed on the pedestal D, the indoor unit 1 is mounted on the inner wall V of the room I.
Attach. Here, the connection port 1c of the indoor unit 1
To the through hole H.

Next, the supply / exhaust pipe 3 is cut into an appropriate length, and is fixed along the outer wall W using a saddle or the like. continue,
The upper end 3a of the supply / exhaust pipe 3 is inserted into the through hole H and connected to the connection port 1c of the indoor unit 1, while the lower end 3b is connected to the connecting portion 21a of the outdoor unit 2. As a result, the supply / exhaust pipe 3 is vertically extended, and the indoor unit 1
A communication path between the outdoor unit 2 and the outdoor unit 2 is formed.

Next, the operation of the outdoor air conditioner will be described. First, when the user performs, for example, an operation of cooling the room using the remote controller R, the control unit switches the cooling / heating switching unit to the cooling cycle and starts the outdoor unit 2. In this cooling cycle, the compressor 11, the first heat exchanger 13, the pressure reducer 14, and the second
The refrigerant flows through the path of the heat exchanger 15, and the first heat exchanger 13 serving as a condenser exchanges heat with the outside air by the blower fan 20.

The control unit rotates the air supply / exhaust fan 21 forward and opens the on-off valve 22 to the first position X. Then, since the opening 17 a is opened, the room air is sucked from the air supply / exhaust port 1 b of the indoor unit 1 and sent out to the air storage tank 17. Since the storage of the air in the air storage tank 17 is completed in a short time, the control unit controls the on-off valve 22.
To the second position Y to close the opening 17a.

When the room air is stored in the air storage tank 17, the room air passes through the second heat exchanger 15 serving as an evaporator, so that the room air is cooled by heat exchange. Further, the air after storage due to the closing of the opening 17a is also cooled with time, but since the exhaust port 17b is open,
The stored air is recirculated between the intake passage 18 and the intake passage 18 to promote heat exchange.

After a certain period of time has elapsed since the start of the cooling, the control unit opens the on-off valve 22 to the third position Z, and rotates the air supply / exhaust fan 21 in the reverse direction to cool the air in the air storage tank 17. Is blown into the room through the air supply / exhaust port 1b of the indoor unit 1. Then, since cool air is blown out into the room I, this room is cooled.

When the air in the air storage tank 17 is exhausted, the control unit operates the on-off valve 22 and the air supply / exhaust fan to draw indoor air from the indoor unit 1 and store the air in the air storage tank 17. Cool while cooling. Then, after a certain time, the on-off valve 22 and the air supply / exhaust fan 21 are operated to send cool air into the room.

As described above, the intake of the room air and the delivery of the cooling air are alternately performed through the supply / exhaust pipe 3, and the room I is air-conditioned until the temperature reaches the set temperature. Then, when the temperature becomes appropriate, the control unit stops each unit and temporarily ends the operation.

On the other hand, when heating the room I, the switching valve 1
2, a compressor 11, a second heat exchanger 15, and a pressure reducer 14.
And a heating cycle in which refrigerant flows through the path of the first heat exchanger 13 is formed, and the first heat exchanger 13 serving as an evaporator is formed.
Performs heat exchange with outside air, while the second heat exchanger 15 serving as a condenser heats room air. Also in this case, as in the case of cooling, the supply and discharge of air between the room I and the air storage tank 17 are repeated via the air supply / exhaust pipe 3, and the room I is gradually heated.

As described above, in the outdoor air conditioner of this embodiment, the indoor unit 1 having a simple structure for sucking and discharging indoor air and the outdoor unit 2 for cooling and heating are connected by the supply and exhaust pipe 3 through which air flows. The installation work is easy because it only needs to be connected. In addition, since the work of attaching and detaching the indoor unit 1 and the supply / exhaust pipe 3 can be easily performed, the relocation thereof is also easy.

In the above embodiment, the case where the present invention is applied to a heat pump type air conditioner which is used for both cooling and heating is described. However, it is needless to say that the present invention can also be applied to a small cooler dedicated to cooling.

The indoor unit having a heat exchanger and a blower fan and the outdoor unit having a built-in heat source are connected by piping without distinction between a heat source and a cooling / heating system, and cold or hot water is allowed to flow between the two units. It can also be applied to an air conditioner in which indoor heat exchange is performed by a blower fan. In this air conditioner, the heat exchanger may be housed in the outdoor unit together with the heat source, and the air storage tank and the indoor unit may be connected to each other by a supply / exhaust pipe so as to flow indoor air.

[0042]

As described above, the present invention has a simple structure in which the indoor unit has the air supply / exhaust port, and the indoor unit and the outdoor unit installed outdoors are provided with the air supply / exhaust pipe through which air flows. Because it is supposed to connect,
When this outdoor installation air conditioner is installed in a general house or the like, a through hole is formed in a wall partitioning the inside and outside, or a supply / exhaust pipe is inserted into a through hole for a refrigerant pipe provided in advance to connect both units. Since the connection is sufficient, the installation work is extremely easy. In addition, since the indoor unit and the air supply / exhaust pipe can be easily attached and detached, there is no need to ask a specialized contractor when relocating to an adjacent room or when moving by moving, and the costs associated with new construction and relocation are eliminated. Is unnecessary or leads to significant savings. In addition, the heat exchanger, the blower fan and the like are built in the outdoor unit together with the main heat source device to achieve compactness, while the structure of the indoor unit is simplified, so that the production is easy and the cost is low.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram of an outdoor air conditioner according to an embodiment of the present invention.

FIG. 2 is a perspective view showing an indoor unit.

FIG. 3 is a perspective view showing an outdoor unit.

FIG. 4 is a longitudinal sectional view showing the outdoor unit.

FIG. 5 is a transverse sectional view showing the outdoor unit.

FIG. 6 is an explanatory diagram showing a schematic configuration of a cooling / heating cycle.

FIG. 7 is a perspective view showing a conventional outdoor unit.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Indoor unit 1b Supply / exhaust port 2 Outdoor unit 3 Supply / exhaust pipe 17 Air storage part 21 Supply / exhaust fan W Wall H Through hole

Claims (1)

(57) [Claims] A refrigerant circulation system connected to a compressor, a first heat exchanger, a second heat exchanger, a decompressor, and cooling / heating switching means to form a cooling cycle or a heating cycle; An outdoor unit including an outdoor fan provided on the exchanger side, an air storage unit in which the second heat exchanger is disposed, and a supply / exhaust fan provided on the opening side of the air storage unit; and An indoor unit having an air supply / exhaust port is provided, and one end communicates with the air supply / exhaust port of the indoor unit through a through hole formed in a wall partitioning the indoor / outdoor. An air supply / exhaust pipe having the other end connected to the opening of the air storage unit is provided, and the cooling / heating switching means is switched to a cooling or heating cycle to perform the cooling / heating operation of the outdoor unit, and the air supply / exhaust fan is rotated forward. By Control for sucking indoor air from the indoor unit side and storing it in the air storage section, and after cooling or heating, rotating the air supply / exhaust fan in reverse to discharge cool air or warm air from the air storage section from the air supply / exhaust port of the indoor unit. An outdoor-installed air conditioner characterized by comprising control means for performing: