JPS60108650A - Air conditioner - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to an air conditioner that performs dehumidification and cooling operations.

[Prior art]

Conventionally, as this type of air conditioner, there has been one in which a cooler and a condenser are sequentially arranged from an air inlet to an air outlet of an indoor unit.

Therefore, if the dehumidifying operation is performed continuously, the indoor temperature increases by the amount of input to the motor, which is a drawback.

[Summary of the invention]

This invention performs the dehumidifying operation by combining a main refrigeration cycle which is independent from each other and a cooling-only refrigeration cycle in which a cooling-only refrigeration cycle cooler is installed before the cooler of the main refrigeration cycle. It is an attempt to eliminate defects.

[Embodiments of the invention]

Hereinafter, two embodiments of the present invention will be explained.

In Figure (2), il+ is the main refrigeration cycle compressor, (2
1 is a compressor dedicated to cooling, G (+, +41 is the main refrigeration cycle and a compressor dedicated to cooling, 15+, +61 is the main refrigeration cycle and ', a throttle device dedicated to cooling, +71,
+81 is the main refrigeration cycle and a cooler dedicated to cooling, +
9+, [io+ is the main refrigeration cycle and the refrigerant piping for cooling only, and the main refrigeration cycle refrigerant piping (9) is the main refrigeration cycle compressor (11 pipes t101 are the cooling only compressor (2) and the condenser, respectively) (4), diaphragm device tb+
, a cooler (8) are successively connected to form a cooling-only refrigeration cycle CB+. The main refrigeration cycle (c) can be operated independently, and the cooling-only refrigeration cycle (c)
El is provided with a control circuit (not shown) for parallel operation and independent operation with the main refrigeration cycle (Aj).
is an indoor unit having an air inlet (lla) and an air outlet (Ilb), and includes a main refrigeration cycle compressor 11+,
It houses the M tea supply (3), the expansion device (5), the cooler (7), and the cooling-only refrigeration cycle cooler (8),
A cooling-only cooler (8), a main refrigeration cycle cooler (7), and a main refrigeration cycle condenser (3) are arranged sequentially from the air inlet (Ila) to the air outlet (llb). There is. α2 is the air inlet (12a) and the air outlet (
An outdoor unit with 12 air conditioners and a dedicated cooling compressor (2)
, a condenser (4), and a throttle device (6).

03) is housed in the indoor unit (11), and includes a main refrigeration cycle condenser (3) and a main refrigeration cycle cooler (7).
The indoor unit blower that ventilates to the cooling-only cooler (8) is housed in the outdoor unit 02), and the outdoor unit blower (15) ventilates to the cooling-only refrigeration cycle condenser (4). A piping joint installed in the cooling refrigerant piping recess that connects the indoor unit (11) and the outdoor unit (a) connects the indoor unit (11) <1υ and the outdoor unit (t3
and can be separated.

In such a configuration, when performing dehumidification and drying, only the main refrigeration cycle compressor fi+ is operated to activate the main refrigeration cycle (Aj), and the main refrigeration cycle cooler (7) performs cooling and dehumidification. The refrigeration cycle condenser heats the dry air after dehumidification.

On the other hand, when dehumidifying without keeping the room temperature constant,
By operating the main refrigeration cycle and the cooling-only compressor fli2+ together, the main refrigeration cycle (Al performs the dehumidifying and drying operation described above), and the cooling-only refrigeration cycle (El performs cooling and dehumidification with the cooling-only cooler).

Here, if the cooling capacity of the cooling-only refrigeration cycle (H) is selected to be equal to the capacity of the main refrigeration cycle (Al's motor input and the indoor maximum heat load), humidity control will be performed by the main refrigeration cycle compressor. The start/stop of fil and the control of temperature can be performed by turning on/off the refrigeration cycle compressor (21) exclusively for cooling.

〔Effect of the invention〕

As described above, in this invention, dehumidification and cooling operations are performed by a combination of a main refrigeration cycle that is independent of each other and can be operated independently, and a cooling-only refrigeration cycle that can be operated in parallel with the main refrigeration cycle or independently. Thus, each refrigerant circuit becomes the simplest refrigeration cycle, and it is possible to obtain an air conditioner that supplies dry air with low relative humidity and little change in dry bulb temperature.

[Brief explanation of drawings]

The figure shows the structure of an air conditioner according to an embodiment of the present invention (71 is a cooler for the main refrigeration cycle, (8) is a cooler for the cooling-only refrigeration cycle, (11) is an indoor unit, (lla). (llb) ) are the air inlet and air outlet. Agent: Masuo Oiwa

Claims (1)

[Claims] It is composed of mutually independent refrigerant circuits, and is equipped with a main refrigeration cycle that can be operated independently, and a cooling-only refrigeration cycle that can be operated in parallel or independently with this main refrigeration cycle. A cooler for the cooling-only refrigeration cycle, a cooler for the main refrigeration cycle,
and an air conditioner characterized in that the condensers of the main refrigeration cycle are sequentially arranged.