JPS6170354A - 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 Field of the Invention The present invention relates to water treatment of components used in air conditioners.

Conventional configuration and its problems The configuration of a conventional example and its problems will be explained with reference to FIG.

FIG. 1 shows a compressor 1. Receiver 2. Four-way valve 3. Outdoor heat exchanger4. Check valve 5. It is a refrigeration cycle diagram of an air conditioner consisting of an indoor heat exchanger 6°, a capillary tube 7, and piping connecting the above-mentioned parts.

During heating operation, the high-temperature, high-pressure refrigerant compressed by the compressor 1 passes through the four-way valve 3 and exchanges heat with the room air in the indoor heat exchanger 6. After that, the refrigerant pressure is reduced in the capillary tube 7, and the refrigerant is reduced to a low-pressure one. After being turned into a refrigerant, the refrigerant is heat exchanged with outside air in an outdoor heat exchanger 4, passes through a four-way valve 3, passes through a liquid receiver 2, and returns to the compressor 1.

If continuous heating operation is performed for a long time during this process, the outdoor heat exchanger 4. Receiver 2. Low-pressure piping is cooled, water adheres to it, and the water is further cooled and frost forms.

As a result, the heating capacity decreases, so a defrosting operation is performed at regular intervals to melt the frost on the outdoor heat exchanger 4, liquid receiver 2, and low-pressure system piping.

However, the molten water drained from the outdoor heat exchanger 4, liquid receiver 2,
If the water adheres to the low-pressure pipes and restarts the heating operation before the water has completely flowed out, the water adhering to the above parts will cool down and the ice will grow rapidly, causing ice to form especially on the liquid receiver 2 and the pipes. When the product hits the outer box, etc., abnormal noises, abnormal vibrations, etc. are generated. In particular, in the case of integrated air conditioners where space is not available for each part, ice often comes into contact with other parts in 1. The solution is to stop the ice from growing.

Purpose of the Invention The present invention solves these problems by using parts that have been treated with a hydrophilic coating for the parts used in the air conditioner, so that the air conditioner can be ,
The purpose is to improve the flow of water adhering to parts and to reduce the amount of water remaining on parts after defrosting operation.

Structure of the Invention In order to achieve this object, components other than the heat exchanger, which are always at a low temperature during both cooling and heating operations of the air conditioner, are treated with a hydrophilic coating.

With this configuration, it can be used in places where there are no gaps between parts, such as in an integrated air conditioner, so there is no need to create more gaps or use insulation materials than in other places.

DESCRIPTION OF EMBODIMENTS The present invention will be described below with reference to FIGS. 1 and 2 showing one embodiment thereof.

The refrigeration cycle shown in FIG. 1 is the same as the conventional example, so the explanation F'J'1 will be omitted.

In Fig. 2, 8 is an underframe, a compressor 1, a liquid receiver 2
, four-way valve 3, indoor heat exchanger 6, indoor impeller 9, indoor water tray 10, low pressure system piping 11, power supply box, indoor and outdoor fan morphs, outdoor impeller, outdoor heat exchanger, The outdoor water tray is equipped with a dish (not shown). During cooling/heating operation, the flow of water adhering to the liquid receiver 2, low-pressure system piping 11, etc. is improved by processing the surfaces of the liquid receiver 2, low-pressure system piping 11, etc. with a hydrophilic coating. . In particular, if the heating operation is continued for a long period of time, frost will form on the outdoor heat exchanger and the heating capacity will decrease, so deflating operation is performed at regular intervals to melt the frost. At this time, the frost on the receiving liquid@2, low-pressure system piping 11, etc. also melts and turns into water, and the water flows down due to its hydrophilic action, preventing the rapid growth of ice even when operating at a low temperature. It is possible to prevent the occurrence of abnormal vibrations, abnormal noises, etc.

Effects of the Invention As described above, the present invention improves the air flow by treating the surface of parts with a hydrophilic coating for parts used in structures where there are no gaps between parts, such as an integrated air conditioner. When the conditioner is in operation, it is used for parts that are constantly cooled by something other than the heat exchanger, and even if it is used for long periods of continuous heating operation, ice growth can be prevented, and abnormal vibrations and abnormalities caused by contact between other parts and ice can be prevented. No sound etc. Furthermore, there is no need to perform heat insulation treatment using a heat insulating material, which has the effect of improving assembly workability.

[Brief explanation of drawings]

FIG. 1 is a refrigeration cycle diagram of an air conditioner, and FIG. 2 is a partially cutaway front view of an integrated air conditioner according to an embodiment of the present invention. 2...Liquid receiver, 4...Outdoor heat exchanger, 11...Low pressure system piping. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure □mu - 111 Shuma

Claims (1)

[Claims] An air conditioner in which a hydrophilic coating is applied to the low-pressure parts that make up the refrigeration cycle other than the air conditioner's heat exchanger.