JPS604007Y2 - Indoor air conditioner unit - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to an indoor unit of an air-conditioner/heater equipped with a water tray that functions as a dew pan and a humidifying pan.

[Prior art]

Conventionally, the indoor unit of this type of air conditioner/heater has a drain port in a part of the dew pan and humidifying tray, and a container-shaped float with a humidifying water inlet facing inside. The system uses a system that stores a large amount of humidifying water and evaporates it, and when cooling the air conditioner, it collects the condensed water and discharges it outside the machine.

However, in the indoor unit of conventional air conditioners,
Since the structure is such that humidifying water is directly injected into the float and the valve is opened and closed by the float itself, it is difficult to accurately control opening and closing.

Furthermore, it requires a guide mechanism for the float, which not only complicates the structure, but also requires high-precision machining, resulting in high costs.

[Summary of the idea]

The present invention was developed in view of these circumstances.The water tray, which functions as both a dew tray and a humidifying tray, has an extremely simple structure in which a solenoid valve that is opened and closed by a changeover switch is installed in the drainage path of the tray. To provide an indoor unit of an air conditioner/heater that can be reliably controlled and have a simplified structure and processing work.

Hereinafter, the configuration and the like will be explained in detail with reference to embodiments shown in the drawings.

[Example of idea]

FIG. 1 is a sectional view showing an indoor unit of an air conditioner/heater according to the present invention, and FIG. 2 is a diagram schematically showing the electric circuit thereof.

In the figure, 1 is an indoor unit of an air conditioner, 2 is an outdoor cooling unit, 3 is a refrigerant pipe, and 4 is a cooling heat exchanger.

5 is a heat exchanger 4 provided below this cooling heat exchanger 4.
A water tray 6 serves as a humidifying tray for receiving the drain and also functions as a humidifying tray for humidifying during heating. It is a solenoid valve.

This electromagnetic valve 6 is configured to open the drain discharge passage 7 during cooling operation, and close the discharge passage 7 during heating operation.

In addition, 9 is a solenoid valve operating coil, 10 is a power source, 11 is a power switch, 12 is a cooling circuit for the outdoor cooling unit 2, etc.
13 is a heating circuit, 14 is a combustion tube, 15 is a fuel supply port,
16 is a combustion blower, 117 is a combustion air intake port, 18
is the exhaust port, 19 is the indoor ventilation fan, 20 is the indoor suction port,
21 is an air filter, and 22 is an indoor air outlet.

Further, 23 is a humidifying plate having a water-absorbing structure, and the water receptacle at the lower end thereof is immersed in the water of the dish 5.

In the indoor unit of the air conditioner/heater configured in this way, the outdoor cooling unit 2 is operated during the cooling operation, and the refrigerant is circulated between it and the cooling heat exchanger 4 of the indoor unit 1.

On the other hand, indoor air sucked in from the indoor suction port 20 by the indoor ventilation fan 19 of the indoor unit 1 is sent to the cooling heat exchanger 4 through the air filter 21, where it is heat exchanged, and then enters the room from the indoor air outlet 22. Supplied as cold air.

At this time, the solenoid valve 6 is opened by the changeover switch 8 and the drain discharge path 7 is opened. Therefore, the drain generated by the cooling heat exchanger 4 is received by the water tray 5 and drained by the drain path 7. It is discharged outdoors.

During heating operation, combustion air is supplied from the combustion air intake port 17 by the combustion blower 16, and fuel is supplied from the fuel supply port 15, which are combusted in the combustion tube 14, and exhaust gas is discharged from the exhaust port 18.

On the other hand, indoor air is supplied to the combustion tube 14 by an indoor ventilation fan 19.
The air is sent to the surrounding area, where it undergoes heat exchange and is supplied indoors as warm air from the indoor air outlet 22.

At this time, the solenoid valve 6 is closed by the changeover switch 8 and the drain discharge passage 7 is closed, so that the water supplied into the dish 5 is gradually sucked up by the humidifying plate 23. It evaporates and is blown out along with warm air from the indoor air outlet 22 to humidify the room.

[Effect of idea]

As explained above, according to the present invention, the water receiver is provided with a solenoid valve in the drain discharge path of the dish that is opened and closed by a changeover switch that switches between cooling operation and heating operation, so that the opening and closing control of the valve is performed reliably. .

In addition, since the conventionally required float and its guide mechanism are no longer required, the structure and processing work are simplified.
It is possible to reduce costs.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing an indoor unit of an air conditioner/heater according to the present invention, and FIG. 2 is a diagram schematically showing the electric circuit thereof. 1...Indoor unit of air conditioner/heater, 4...
・Heat exchanger for air conditioning, 5... Water tray is a plate, 6...
...Solenoid valve, 7...Drain discharge path, end...
...Choice switch.

Claims (1)

[Scope of utility model registration request] In an indoor unit of an air conditioner/heater, the water tray is equipped with a tray that receives the drain from the cooling heat exchanger and also functions as a humidifying tray for humidification during heating. An indoor unit for an air conditioner/heater, characterized in that it is provided with a solenoid valve that is opened and closed by a changeover switch, and the solenoid valve opens a drain discharge passage during cooling operation and closes the discharge passage during heating operation.