JPH11182909A - Inspection trial run device for air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a maintenance device for a separate package air conditioner that can reduce the number of maintenance workers such as inspectors or trial run operators. SOLUTION: A controlling cable for transmitting the operation output signal of an indoor fan motor is connected to a receptacle connector 7, that is provided in an outdoor unit side power supply box 6, from an indoor unit side power supply box. In a portable maintenance test switch 10 that can be carried by maintenance workers, an indoor fan operating switch 71, a heating/cooling changeover switch 72, a compressor 50% load operation switch 73, and a compressor 100% load operation switch 74 are set. Then, the receptacle connector 9 of the maintenance test switch 10 is detachably connected to the receptacle connector 7 of the outdoor unit side power supply box 6, so as to easily perform the trial run operation of a compressor 15, an outdoor fan 19, and an indoor fan at the outdoor unit 3 side.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an inspection and trial operation device for an air conditioner for performing inspection and trial operation of, for example, a separate package air conditioner.

[0002]

2. Description of the Related Art In recent years, as a building air conditioner indispensable for many buildings such as buildings, factories, apartment houses, etc., a demand for a separate package air conditioner in which an indoor unit and an outdoor unit are separately provided is increasing. ing. And maintenance of such a separate package air conditioner,
As shown in FIG. 7, after the outdoor unit 102 installed on the roof of the building 101 is inspected, a test operation is performed to check the operation state of the outdoor unit 102.
It is necessary to operate the operation switch installed on the air-conditioning operation panel 104 installed on the third side. For this reason, the outdoor unit 1
02 and a single operator who operates the air-conditioning operation panel 104 installed on the indoor unit 103 side. The test run of 102 was performed.

[0003]

However, in the current maintenance method, after the outdoor unit 102 is inspected,
The outdoor unit 1 is divided into the outdoor unit 102 side and the indoor unit 103 side.
It was necessary to check the operation state of 02, which was very troublesome. In addition, the current operation method of the separate package air conditioner is mainly from the user's point of view, and is not considered at all by maintenance workers.
There is a problem that it is necessary to make one person stand by as a test run operator, and maintenance workability is very poor.

[0004]

SUMMARY OF THE INVENTION It is an object of the present invention to reduce the number of workers by making it possible to easily perform a trial operation of an outdoor unit and a trial operation of an indoor unit on the outdoor unit side.
It is another object of the present invention to provide an air conditioning inspection / test run apparatus capable of improving maintenance workability. Another object of the present invention is to provide an air conditioner inspection and trial operation device including a portable outdoor unit-side operation operation means that can be used commonly for air conditioners of the same model type.

[0005]

According to the first aspect of the present invention, the outdoor unit-side operation operation means is connected to an external connection terminal provided on the outdoor unit side, and the outdoor unit-side operation operation means is connected to the outdoor unit-side operation operation means. By performing a trial operation of the indoor unit and the outdoor unit, the indoor unit-side control unit starts the indoor blower, and the outdoor unit-side control unit starts the refrigerant compressor.

[0006] Thus, by operating the outdoor unit-side operation operation means on the outdoor unit side, the trial operation of the indoor unit and the trial operation of the outdoor unit can be easily performed. There is no need to perform inspection work separately. As a result, the number of maintenance workers such as an inspector and a test run operator can be reduced, and the maintenance workability such as an inspection work and a test run operation can be improved.

According to the second aspect of the present invention, if the outdoor unit-side operation operation means is attached to all the outdoor units, the cost increases, but the outdoor unit-side operation operation means is required for inspection and test operation. Since it is the time of work, the outdoor unit-side operation operation means is made portable so that a maintenance worker such as an inspector or a test operation operator can carry it. In addition, by adopting a structure in which the external connection device of the outdoor unit-side operation operation means can be detachably connected to the external connection terminal of the air conditioner of the same type, the outdoor unit can be connected to the air conditioner of the same type. The machine-side operation operation means can be shared and used.
As a result, the overall cost can be reduced as compared to a system in which the outdoor unit-side operation operation means is attached to each of the plurality of outdoor units.

According to the third aspect of the present invention, a safety circuit is provided in the indoor unit-side operation operation means installed on the indoor unit side, so that a maintenance worker such as an inspector or a test run operator can perform inspection work or operation. Even if the user performs a normal operation on the indoor unit side during the test operation, the normal operation on the indoor unit side can be canceled or not accepted. As a result, during the inspection work or the trial operation, the user normally operates the indoor unit-side operation operation means to start the outdoor unit or the indoor unit carelessly, or the start of the indoor unit or the outdoor unit may be caused. Accidents can be avoided beforehand.

[0009]

1 to 5 show an embodiment of the present invention. FIG. 1 shows a portable maintenance test switch and an outdoor unit. FIG. 3 is a diagram showing a maintenance device for a separate package air conditioner.

The maintenance device for a separate package air conditioner of the present embodiment includes a separate package air conditioner (corresponding to an air conditioner of the present invention) 1 for cooling or heating the inside of a building such as a building, a factory, a private house or an apartment house. A portable maintenance test switch 10 for performing inspection and trial operation of the separate package air conditioner 1 is provided.

The separate package air conditioner 1 controls the energization of an indoor unit 2 installed indoors (indoors) of a building, an outdoor unit 3 installed outdoors (outdoors) of a building, and an air conditioner of the indoor unit 2. An indoor unit-side power supply box 4 to be operated, an air conditioning control panel 5 for performing a normal operation operation, an outdoor unit-side power supply box 6 for controlling the energization of the air conditioner of the outdoor unit 3, and an outdoor unit-side power supply box 6. Outlet connector 7
It is composed of

The indoor unit 2 includes a box-shaped casing installed on the inside of a building, for example, a wall surface inside the room, an air-conditioning duct (not shown) installed inside the casing, and an air-conditioning duct inside the air-conditioning duct. An indoor heat exchanger 11 that is arranged and functions as a refrigerant evaporator (evaporator) during a cooling operation and functions as a refrigerant condenser (condenser) during a heating operation, and an indoor blower 12 that generates an airflow heading indoors in the air conditioning duct. It has. The indoor blower 12 includes an indoor fan 13 and an indoor fan motor (for example, an AC motor) 14 that rotationally drives the indoor fan 13.

The outdoor unit 3 includes a box-shaped casing installed outside the building, for example, on the roof of a building or factory, under the eaves of an apartment house or private house, or on a veranda, and a refrigerant installed inside the casing. Compressor (compressor) 15
And an outdoor heat exchanger 16 that functions as a refrigerant condenser (condenser) during the cooling operation and that functions as a refrigerant evaporator (evaporator) during the heating operation, and blows outdoor air (cooling air) to the outdoor heat exchanger 16 to remove the refrigerant. Outdoor blower 1 for cooling
7 is provided.

The compressor 15 is driven to rotate by a compressor motor 18 which is, for example, an AC motor, and compresses and discharges the sucked refrigerant. Further, the outdoor blower 17 corresponds to a refrigerant cooling unit of the present invention, and includes an outdoor fan 19 and an outdoor fan motor (for example, an AC motor) 20 that rotationally drives the outdoor fan 19. The suction pipe (low-pressure pipe) and the discharge pipe (high-pressure pipe) of the compressor 15 are provided with a low-pressure pressure gauge 21 and a high-pressure pressure gauge 22 that are checked by an inspector and a test run operator during maintenance. .

FIG. 3 shows a general refrigeration cycle (heat pump cycle) 23. This refrigeration cycle 2
3 is an annular connection of the compressor 15, the four-way valve 24, the temperature-operated heating expansion valve 25, the outdoor heat exchanger 16, the temperature-operated cooling expansion valve 26, the indoor heat exchanger 11, and the accumulator 27. I have. The four-way valve 24 switches to a state shown by a solid line in a cooling operation (cooling cycle), and switches to a state shown by a broken line in a heating operation (heating cycle).

In addition, the refrigeration cycle 23 includes a cooling solenoid valve 28 that opens during cooling operation, closes during heating operation, and bypasses refrigerant from the heating expansion valve 25 during cooling operation, and cooling. A heating electromagnetic valve 29 for closing the valve during operation, opening the valve during heating operation, and bypassing the refrigerant from the cooling expansion valve 26 during heating operation is connected. The compressor 15, the four-way valve 24, the cooling solenoid valve 28, and the heating solenoid valve 29 are connected to an outdoor unit side power supply box 6 described later.
Is controlled by

Next, the indoor unit side power supply box 4 will be briefly described with reference to FIGS. Here, FIG. 4 is a circuit diagram showing the indoor unit side power supply box 4 and the air conditioning control panel 5. The indoor unit side power supply box 4 corresponds to the indoor unit side control means of the present invention, and is built in the indoor unit 2 and includes relay coils 31 to 33, relay switches 34 to 36, a transformer 37, and three A load relay 38
An indoor unit side electric circuit (relay sequence circuit) 39 connected to a phase 200V power supply (not shown) is provided. The relay coil 31 closes the relay switch 34 when energized. The relay coil 32 closes the relay switch 35 when energized.

Further, the relay coil 33 closes the three relay switches 36 when energized. The transformer 37 is a voltage transformation circuit that reduces the voltage from 200V to 24V. Note that the indoor unit side power supply box 4 has, as input / output terminals, C terminal, G terminal, R terminal, R terminal, Y terminal, and U terminal.
Terminals and O terminals are provided. The three overload relays 38 cut off power supply to the indoor fan motor 14 when an overload is applied to the indoor fan motor 14.

Next, the air-conditioning control panel 5 will be briefly described with reference to FIGS. The air-conditioning control panel 5 corresponds to the indoor unit side operation operation means of the present invention, and is fixed to the indoor unit 2 side, that is, the indoor wall or the like, and electrically connected to the input / output terminal of the indoor unit side power supply box 4. It is connected. On the air-conditioning control panel 5, an indoor fan operation output switch 41, a compressor 50% load operation (unload) output switch 42,
A compressor 100% load operation (full load) output switch 43 and a cooling / heating switching switch 44 are provided. Note that the cooling / heating switching switch 44 is used for cooling operation (O
A switch for giving an instruction to switch between N) and the heating operation (OFF).

A normally closed contact (failure switch) 45 which is opened when a failure output signal is input is provided on the air conditioning control panel 5.
And an automatic manual changeover switch (corresponding to the safety circuit of the present invention) 46 connected in series to the failure switch 45. One end of the automatic manual changeover switch 46 is connected to the G terminal of the indoor unit side power supply box 4, and the other end of the automatic manual changeover switch 46 is connected to the G terminal of the outlet connector 7 via the control cable 61. ing.

Here, the maintenance test switch 1
As a safety measure when the test operation operator operates 0, it is necessary to prevent normal operation on the indoor unit 2 side during use of the maintenance test switch 10 (during test operation). Therefore, the electric circuit of the air-conditioning control panel 5 is effective only when the automatic manual changeover switch 46 for switching between the automatic mode (central operation mode) and the manual mode (on-site operation mode) of the air-conditioning operation panel 5 is in the manual mode (normal room). (To prevent the driving operation on the machine 2 side).

Next, the outdoor unit side power supply box 6 will be briefly described with reference to FIGS. Here, FIG.
FIG. 2 is a circuit diagram showing the outdoor unit-side power supply box 6 and the maintenance test switch 10. The outdoor unit-side power supply box 6 corresponds to the outdoor unit-side control means of the present invention, and is built in the outdoor unit 3. This outdoor unit side power supply box 6
Inside, a circuit board 5 having a microcomputer (digital circuit) having a CPU, a ROM, a RAM, and the like, for example.
1 is provided.

The circuit board 51 includes a control cable 52
To the indoor unit-side power supply box 4 through 57, a cooling input signal (heating input signal) input from an O terminal, a compressor unload input signal input from a Y terminal, and an input signal from a U terminal. The energization of the compressor motor 18 and the outdoor fan motor 20 is controlled based on the compressor full load input signal.

When the circuit board 51 determines that the air conditioner of the outdoor unit 3 has failed based on a sensor signal from a not-shown refrigerant pressure sensor or the like, the failure switch 45 is opened from the L terminal of the circuit board 51. A failure output signal for performing the operation is output. And, during the heating operation, the outdoor heat exchanger 16
A defrost signal (not shown) for notifying that frost has formed is output to the indoor unit side power supply box 4. The R terminal and the C terminal of the circuit board 51 are connected to a 24 V AC power supply (not shown). Further, the E terminal is empty.

Next, the outlet connector 7 is shown in FIGS.
This will be briefly described with reference to FIG. The outlet connector 7 corresponds to the external connection terminal of the present invention, and is a female connector (outdoor unit-side external connection tool) provided on the surface of the outdoor unit-side power supply box 6. The outlet connector 7 has a G terminal connected to an automatic manual changeover switch 46 of the air conditioning control panel 5 via a control cable 61 and an R terminal connected to an R terminal of a circuit board 51 via a control cable 62. The circuit board 5 via the terminal and the control cable 63
O terminal connected to the O terminal 1 and a control cable 64
A Y terminal connected to the Y terminal of the circuit board 51 through
A U terminal connected to a U terminal of the circuit board 51 via a control cable 65 is provided.

Next, the maintenance test switch 10
Will be briefly described with reference to FIGS. 1, 2 and 5. The maintenance test switch 10 is equivalent to the outdoor unit-side operation operation means of the present invention, and can be carried (carried) by a maintenance worker such as an inspector or a test run operator. An outlet connector 9 that can be detachably connected to the outlet connector 7 is provided.

The maintenance test switch 10 has, for example, a small steel box 70 having a size of 250 mm × 70 mm × 70 mm and a weight of 0.8 kg. On the small steel box 70, an indoor fan operation switch 71, a cooling / heating switching switch 72, a compressor 50%
A load (unload) operation switch 73 and a compressor 100% load (full load) operation switch 74 are provided.

The control cable 8 is taken out of the small steel box 70, and an outlet connector 9 is provided at an end of the control cable 8. The outlet connector 9 is an external connector of the present invention, and is a male connector (a switch-side external connector) in which a G terminal, an R terminal, an O terminal, a Y terminal, and a U terminal are connected to the same type of terminals of the outlet connector 7. ).

Next, a control circuit (electric circuit) built in the maintenance test switch 10 of the present embodiment will be described. If the control circuit of the maintenance test switch 10 is set in the same manner as the air conditioner operation output from the air conditioning control panel 5, the test operation can be performed. Therefore, as shown in FIGS. 4 and 5, the outdoor unit-side power supply box 6 receives the output from the indoor unit-side power supply box 4 in response to the cooling / heating switching instruction, the compressor 50% load operation instruction, and the compressor 100% load operation instruction. Thus, the air conditioner (compressor 15, four-way valve 24, cooling solenoid valve 28, and heating solenoid valve 29) of the outdoor unit 3 is controlled.

For this reason, the cooling and heating switching is performed by electrically connecting the R-terminal to the O-terminal of the circuit board 51 in the outdoor unit-side power supply box 6 with conductive wires (control cables) 62 and 63, The air conditioning switch 72 is turned on between the lines 62 and 63. Note that the cooling / heating switch 72 is
When N (closed), it can be switched to cooling operation,
When FF (open), it can be switched to heating operation.

Similarly, in the 50% load (unload) operation of the compressor, the conductive wires (control cables) 62 and 64 electrically connect between the R terminal and the Y terminal of the circuit board 51 in the outdoor unit side power supply box 6. Electrically connected to the conductive line 62,
The compressor 50% load operation switch 73 is turned on during 64. In addition, when the compressor is operated at 100% load (full load), the circuit board 5 in the outdoor unit-side power supply box 6 is operated.
1 from the R terminal to the U terminal are electrically connected by conductive wires (control cables) 62, 65, and the conductive wires 62, 6
During the period 5, the compressor 100% load operation switch 74 is turned on. When the compressor 50% and 100% load operation switches 73 and 74 are turned on (closed), the compressor 15 and the outdoor blower 17 are started and turned off (open).
Then, the compressor 15 and the outdoor blower 17 are stopped.

Next, the circuit is set up so that the indoor blower 12 starts when the power is supplied from the R terminal to the G terminal of the indoor unit side power supply box 4. Therefore, it is necessary to newly draw one conductive wire (control cable) 61 from the indoor unit 2 side to the outdoor unit 3 side and bring the G terminal to the outdoor unit 3 side. Therefore, the present control cables 52 to 56 for electrically connecting between the indoor unit 2 and the outdoor unit 3 use 10 or more cores (10 cables). Since there are about eight conductive wires remaining, it is possible to bring the G terminal to the outdoor unit 3 using the remaining wires.

Thus, each of the above switches 72-74
Similarly, the space between the R terminal of the circuit board 51 in the outdoor unit side power supply box 6 and the G terminal of the indoor unit side power supply box 4 is electrically connected to the conductive line 62 and the conductive line 61, and the indoor fan The operation switch 71 is turned on. When the indoor fan operation switch 71 is turned on (closed), the indoor fan 1
2 starts and turns off (opens), and the indoor blower 12 stops.

[Operation Procedure of Embodiment] Next, the operation procedure of the maintenance test switch 10 of this embodiment is shown in FIG.
A brief description will be given with reference to FIG.

The maintenance person, such as an inspector or a test run operator, operates the indoor unit 2 of the separate package air conditioner 1.
For example, after the door is opened and the indoor unit 2 is inspected, the automatic manual switch 46 of the air conditioning control panel 5 is turned on (closed).
Thus, as a safety measure when the maintenance worker operates the maintenance test switch 10, the maintenance test switch 10 is used (during trial operation).
Will not be able to perform normal operation on the indoor unit 2 side.

Next, the user goes out of the building and opens, for example, the door of the outdoor unit 3 to inspect the outdoor unit 3. Then, indoor unit 2
In order to test-drive the outdoor unit 3, the outlet connector 9 of the maintenance test switch 10 carried by the maintenance worker is connected to the outlet connector 7 of the outdoor unit side power supply box 6.

Then, the maintenance worker first turns on the indoor fan operation switch 1 on the small steel box 70.
(Close). Thereby, the automatic manual changeover switch 46 is connected to the R terminal of the circuit board 51 in the outdoor unit side power supply box 6.
And the indoor unit side power supply box 4 through the failure switch 45
Are applied to the G terminal, so that the relay coil 31 is conducted. Then, the relay switch 34 is turned on (closed).
Therefore, the relay coil 33 is turned on, and the three relay switches 36 are turned on (closed). Therefore, when the three-phase 200V power is supplied to the indoor fan motor 14, the indoor fan motor 14 starts, and the indoor fan 13 of the indoor blower 12 starts to rotate.

Next, during the test operation of the cooling operation, the air conditioner switch 72 on the small steel box 70 is turned on.
When (closed), power is supplied from the R terminal to the O terminal of the circuit board 51 in the outdoor unit-side power supply box 6, so that a cooling input signal is input to the O terminal of the circuit board 51. Thereby, the circuit board 51 is connected to the air conditioner (the four-way valve 2) on the outdoor unit 3 side.
4. The refrigeration cycle 23 is set to a cooling operation (cooling cycle) by controlling the cooling electromagnetic valve 28 and the heating electromagnetic valve 29). Here, in the case of the test operation of the heating operation, the refrigeration cycle 23 is set to the heating operation (heating cycle) by turning off (opening) the cooling / heating changeover switch 72.

Next, when the compressor 50% load operation switch 73 on the small steel box 70 is closed (ON), power is supplied from the R terminal to the Y terminal of the circuit board 51 in the outdoor unit side power supply box 6. Therefore, a compressor unload input signal is input to the Y terminal of the circuit board 51. As a result, the circuit board 51 performs the unload operation of the compressor motor 18 so that the compressor 15 starts up and the outdoor fan motor 20
When the power of 200 V is supplied, the outdoor fan motor 20 starts, and the outdoor fan 19 of the outdoor blower 17 starts to rotate.

As described above, by outputting the test run of the air conditioner from the maintenance test switch 10, the unload operation of the separate package air conditioner 1 is started. At this time, the refrigerant compressed by the compressor 15 and discharged from the discharge port is a four-way valve 24 → the outdoor heat exchanger 16 serving as a condenser → the cooling electromagnetic valve 28 → the cooling expansion valve 26 → the indoor heat exchanger serving as an evaporator. 11 →
It is sucked into the compressor 15 from the suction port through the four-way valve 24 → the accumulator 27. In addition, the indoor blower 12
Of the indoor fan 13 is rotating, the indoor air sucked into the air conditioning duct of the indoor unit 2 is cooled by exchanging heat with the refrigerant when passing through the indoor heat exchanger 11 and is cooled from the indoor unit 2 into the room. Be blown out. Thereby, the room is cooled.

Then, the maintenance worker reads the pointers and the scales of the low-pressure manometer 21 and the high-pressure manometer 22 attached to the suction pipe and the discharge pipe of the compressor 15, so that the separate package air conditioner 1 can be normally tested. It is possible to check whether or not the indoor blower 12 on the side of the indoor unit 2 is moving, and whether or not the indoor is normally cooled (or heated) while staying at the outdoor unit 3 side. it can.

Then, after a predetermined time has elapsed since the turning on of the compressor 50% load operation switch 73, the compressor 100% load operation switch 74 is closed (ON).
Then, the R of the circuit board 51 in the outdoor unit side power supply box 6 is changed.
Power is supplied from the terminal to the U terminal. Therefore, the compressor full load input signal is input to the U terminal of the circuit board 51, and the compressor motor 18 is operated at full load. Also in this case, the above inspection work is performed.

When the above inspection work and trial operation are completed, the outlet connector 9 of the maintenance test switch 10 is disconnected from the outlet connector 7 of the outdoor unit side power supply box 6. After that, the same operation is performed for the separate package air conditioner 1 of the same model.

[Effects of Embodiment] As described above, in this embodiment, the indoor unit 2 of the separate package air conditioner 1
The test operation and inspection work of the outdoor unit 3 and the test operation and inspection work of the outdoor unit 3 can be easily performed on the outdoor unit 3 side. Therefore, the inspector performing the inspection of the outdoor unit 3 and the air conditioning installed on the indoor unit 2 side There is no need to be divided into the test run operator who operates the control panel 5. As a result, the number of maintenance workers such as an inspector and a test run operator can be reduced, and the maintenance workability such as an inspection work and a test run operation can be improved.

Next, the maintenance test switch 10
Will be described. To make the maintenance test switch 10 portable, the circuit on the maintenance test switch 10 side and the circuit on the separate package air conditioner 1 side must be separated so that they can be easily attached and detached. Therefore, the outlet connectors 7, 9 which can easily attach and detach the circuits are prepared, and the outlet connectors 7, 9 are attached between the outdoor unit side power supply box 6 and the maintenance test switch 10, so that the maintenance test switch 10 can be installed. The circuit and the circuit on the side of the separate package air conditioner 1 can be easily attached and detached.

Further, by making the maintenance test switch 10 compact and lightweight so that the maintenance work can be carried easily, the maintenance test switch 10 can be carried around. The test run operation on the machine 3 side can be performed. Therefore, the maintenance test switch 10 can be shared (general purpose) and used for the separate package air conditioner 1 of the same model type. As a result, the overall cost can be reduced as compared with an air conditioner system in which the maintenance test switch 10 is attached to each of a plurality of outdoor units.

Further, in this embodiment, an automatic manual changeover switch 46 is provided on the air conditioning control panel 5 provided on the indoor unit 2 side of the separate package air conditioner 1. That is, the automatic manual changeover switch 46 is set in a circuit connecting the G terminal of the indoor unit side power supply box 4 and the G terminal of the maintenance test switch 10. For this reason, by turning on (closing) the automatic manual changeover switch 46, the user turns the indoor fan operation output switch 41 of the air conditioning control panel 5 off.
Even if N, since the relay coil 32 is not conducted, the user cannot normally start up the air conditioner on the indoor unit 2 side. Therefore, a maintenance worker such as an inspector or a test run operator performs
The indoor unit 2 and the outdoor unit 3 are not inadvertently activated, and an accident caused by the activation of the indoor unit 2 or the outdoor unit 3 can be avoided.

[Other Embodiments] In this embodiment, an analog circuit is used as the electric circuit in the indoor unit side power supply box 4. However, a digital circuit may be used as the electric circuit in the indoor unit side power supply box 4. good. Further, in the present embodiment, a microcomputer (digital circuit) is used as the circuit board 51 of the outdoor unit-side power supply box 6, but an analog circuit may be used as the electric circuit in the outdoor unit-side power supply box 6. Furthermore, the indoor unit side power supply box 4 and the outdoor unit side power supply box 6 may be integrated into one air conditioner control device, and the air conditioner control device may be installed on the indoor unit 2 side or the outdoor unit 3 side.

In this embodiment, one compressor 15
A refrigeration cycle (heat pump cycle) 23 in which one indoor heat exchanger 11 is connected to the refrigeration cycle is adopted, but a refrigeration in which a plurality of (two or more) indoor heat exchangers are connected to one compressor 15. A cycle (heat pump cycle) may be employed. In this case, one or more indoor units are installed in a plurality of rooms of a building such as a building, a factory, a private house or an apartment house. As a refrigeration cycle, as shown in FIG. 6, a refrigeration cycle (receiver cycle) 23 including a receiver 30 capable of performing only the cooling operation may be employed. Further, instead of the heating expansion valve 25 and the cooling expansion valve 26, a pressure reducing means such as a fixed throttle such as a capillary tube or an orifice or a variable throttle valve such as an electric expansion valve may be used.

In this embodiment, the refrigerant is cooled by exchanging heat between the refrigerant flowing into the outdoor heat exchanger 16 and the cooling air generated by the operation of the outdoor blower 17 as the refrigerant cooling means. Alternatively, the refrigerant may be cooled by exchanging heat between the refrigerant flowing into the outdoor heat exchanger 16 and the cooling water. A heating heat source (refrigerant) such as a combustion flame of a gas burner or engine cooling water is provided between the heating expansion valve 25 of the refrigeration cycle 23 and the outdoor heat exchanger 16 in order to increase the amount of heat absorbed during the heating operation. An outdoor heat exchanger for heating the refrigerant by means of a heating means) may be connected.

In the present embodiment, the indoor fan 13 of the indoor blower 12 is driven to rotate by the indoor fan motor 14, but the indoor fan 13 may be driven to rotate by another actuator such as an engine, a water wheel or a wind turbine. In this embodiment, the outdoor fan 19 of the outdoor blower 17 is driven to rotate by the outdoor fan motor 20.
9 may be rotationally driven by another actuator such as an engine, a water wheel or a windmill.

In this embodiment, the indoor unit side power supply box 4
Although the power supply box 6 and the outdoor unit-side power supply box 6 are electrically connected by wire, the indoor unit-side power supply box 4 and the outdoor unit-side power supply box 6 may be electrically connected wirelessly. In addition, although the indoor unit side power supply box 4 and the maintenance test switch 10 are electrically connected by wire, the indoor unit side power supply box 4 and the maintenance test switch 10 are electrically connected wirelessly. May be.

In this embodiment, as the operation operation switches on the air conditioning control panel 5, an indoor fan operation output switch 41,
Although the compressor 50% load operation output switch 42, the compressor 100% load operation output switch 43, and the cooling / heating switching switch 44 are provided, as the indoor unit side operation operation means, a compressor such as an air conditioner switch for instructing start and stop of the compressor 15 is used. What is necessary is just to provide the fan operation operation means and the indoor blower operation operation means such as a fan switch for instructing start and stop of the indoor blower 12. Also,
The air-conditioning control panel 5 may be replaced with another indoor unit-side operation operation means such as a room thermoswitch.

In this embodiment, as the operation operation switches on the maintenance test switch 10, an indoor fan operation switch 71, a cooling / heating switching switch 72, a compressor 50% load operation switch 73, and a compressor 10
Although the 0% load operation switch 74 is provided, the compressor 1
It is only necessary to provide a compressor operation operating means such as an air conditioner switch for instructing start and stop of the air conditioner 5, and an indoor blower operation operation means such as a fan switch for instructing start and stop of the indoor blower 12.

[Brief description of the drawings]

FIG. 1 is a schematic view showing a portable maintenance test switch and an outdoor unit (embodiment).

FIG. 2 is a schematic view showing a maintenance device for a separate package air conditioner (embodiment).

FIG. 3 is a configuration diagram showing a refrigeration cycle (embodiment).

FIG. 4 is a circuit diagram showing an indoor unit side power supply box and an air conditioning control panel (embodiment).

FIG. 5 is a circuit diagram showing an outdoor unit-side power supply box and a test switch for maintenance (embodiment).

FIG. 6 is a configuration diagram showing a refrigeration cycle (another embodiment).

FIG. 7 is an explanatory diagram showing a current inspection and test operation method.

[Explanation of symbols]

Reference Signs List 1 Separate package air conditioner (air conditioner) 2 Indoor unit 3 Outdoor unit 4 Indoor unit side power supply box (indoor unit side control means) 5 Air conditioning control panel (indoor unit side operation operation means) 6 Outdoor unit side power supply box (outdoor unit side control) Means) 7 Outlet connector (external connection terminal) 9 Outlet connector (external connection tool) 10 Maintenance test switch (outdoor unit side operation operation means) 11 Indoor heat exchanger 12 Indoor blower 15 Compressor (refrigerant compressor) 16 Outdoor heat exchange 17 Outdoor fan 23 Refrigeration cycle 46 Automatic manual changeover switch (safety circuit)

Claims (4)

[Claims] An indoor unit having (a) an indoor heat exchanger for exchanging heat between air and a refrigerant, and an indoor blower for generating an airflow passing through the indoor heat exchanger; and (b) compressing the refrigerant. An outdoor unit having a refrigerant compressor, and an outdoor heat exchanger connected in series with the indoor heat exchanger and the refrigerant compressor; and (c) an indoor unit-side control means for controlling operation and stop of the indoor unit. (D) an outdoor unit-side control means for controlling operation and stop of the outdoor unit; and (e) provided on the outdoor unit side and electrically connected to the indoor unit-side control means and the outdoor unit-side control means. (F) Inspection test operation for an air conditioner, comprising: (f) an outdoor unit-side operation operation means detachably connected to the external connection terminal for performing a test operation operation of the indoor unit and the outdoor unit. apparatus. 2. The air conditioner inspection and trial operation device according to claim 1, wherein the outdoor unit-side operation operation means is detachably attached to an external connection terminal of a portable and same type of air conditioner. An inspection and trial operation device for an air conditioner, characterized by having an external connection tool to be freely connected. 3. The inspection test operation device for an air conditioner according to claim 1, wherein the indoor unit side is electrically connected to the indoor unit side control unit and the outdoor unit side control unit, An indoor unit side operation operation unit for performing a normal operation operation of the indoor unit and the outdoor unit is provided, and the indoor unit side operation operation unit performs a normal operation operation of the indoor unit side during an inspection operation or a test operation operation. Inspection and trial operation device for air conditioner, characterized by having a safety circuit that is canceled or not accepted. 4. The inspection and trial operation device for an air conditioner according to claim 1, wherein the outdoor unit cools a refrigerant flowing into the outdoor heat exchanger, Alternatively, an inspection and trial operation device for an air conditioner, comprising a refrigerant heating means for heating the refrigerant flowing into the outdoor heat exchanger.