JPH0148454B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a finch tube heat exchanger for an air conditioner constituting a refrigeration cycle.

Conventional configuration and its problems In recent years, as air conditioners have become thinner, the storage space for various parts has become smaller. Among these, Finch-Eube heat exchangers are particularly widely used as heat exchangers for air conditioners.
An example of this will be explained with reference to FIG.

In Fig. 1, a fin-tube heat exchanger (hereinafter simply referred to as a heat exchanger) a is constructed by folding down the fins of part c after heat exchanger a is completed in order to accommodate the capillary tube b. Provides space for storing Pillaritube B. However, in this case, in order to increase the amount of fin tilting, it is necessary to remove one pipe of section c, and this also eliminates the need for one pipe in the combination.

Therefore, conventionally, in order to eliminate the heat balance between the inlet pipe f and the outlet pipe g of the heat medium and reduce the decrease in the capacity of the heat exchanger a, the pipe between the inlet pipe f and the outlet pipe g was I had lost it.

However, in this configuration, since the number of heat medium distribution pipes is reduced by two, a decrease in the capacity of the heat exchanger cannot be avoided. In addition, when storing capillary tube b in section c, the dimensional stability of capillary tube b and the soft parts for its protection is poor, so a space e is created between the capillary tube b and the air guider d, and it is necessary to close this space e. Is required. This requires sealing material and manpower, and since capillary tube b is unstable if it is simply placed on heat exchanger a, it is necessary to fix some parts to heat exchanger a, and improvements are desired. Ta.

OBJECTS OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and aims to eliminate the decrease in the performance of the Finch-Eube heat exchanger and further downsize the air conditioner.

Structure of the Invention In order to achieve the above object, the present invention provides a fin group of a finch tube heat exchanger with a notch that forms a space for storing a capillary tube.

With this configuration, the capillary tube can be housed in the heat exchanger without reducing the capacity of the heat exchanger, and no space is required for installing the capillary tube.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 2 to 6.

First, the refrigeration cycle of an air conditioner will be explained with reference to FIG.

Figure 2 shows a refrigeration cycle that can perform heat pump cooling, heating, and dehumidification.In the figure, 1 is a compressor, 2 is a four-way valve, 3 is an outdoor heat exchanger, and 4 and 5 are the first and second capillary tubes, respectively. , 6 and 7 are air conditioners.
First and second check valves change the flow of refrigerant by heating and dehumidification, 8 is a first electromagnetic valve that opens during dehumidification operation, and 9 is an indoor heat exchanger. Here, since the indoor heat exchanger 9 is also capable of dehumidifying, it has a first coil 9a which becomes a reheating coil during dehumidification, a second coil 9b which becomes a cooling coil during dehumidification, and the first and second coils. Both coils 9a, 9b of 2
It is composed of a third capillary tube 10 that connects the two, and a second electromagnetic valve 11 that closes during dehumidification. This indoor heat exchanger 9 uses a fin-tube heat exchanger consisting of a large number of fins arranged side by side and pipes passing through the fins. Specifically, as shown in FIGS. A central slit 12 separates the coil into a first coil 9a and a second coil 9b. Reference numeral 13 denotes a notch formed in a part of the fin group of the second coil 9b, and is located between the inlet pipe 14 and the outlet pipe 15 constituting the refrigeration cycle. Here, the third capillary tube 10 is surrounded by a protective material 16 to prevent damage, and in this state, the third capillary tube 10 is surrounded by the notch 13.
is stored inside.

Therefore, the notch 13 of the indoor heat exchanger 9 can be effectively used when arranging the third capillary tube 10, so that the installation space is reduced as air conditioners become smaller and thinner. can also be dealt with adequately. In addition, since the inlet pipe 14 and the outlet pipe 15 are close to each other, there is a possibility that the heat exchange performance will decrease due to mutual heat exchange action, but since they are thermally insulated by the notch 13, the decrease in heat exchange performance can be suppressed. .

Furthermore, the present invention can be similarly implemented in an outdoor heat exchanger.

Effects of the Invention As described above, by storing the capillary tubes in the notches, the finch tube heat exchanger of the present invention can reduce the storage space occupied by the capillary tubes without reducing the capacity of the heat exchanger.
No special space is required for storage, and the air conditioner itself can be made smaller and thinner. Also,
The capillary tube housed in the notch is surrounded by a protective material, which prevents it from being damaged during assembly, and also prevents the fin from being damaged even if vibration occurs during operation of the air conditioner. collision is prevented, and no collision noise is generated. Furthermore, by placing the refrigerant inlet pipe and outlet pipe of the heat exchanger close to each other, the two perform a heat exchange action, thereby increasing the performance of the heat exchanger.

[Brief explanation of drawings]

Fig. 1 is a cross-sectional view of the main parts of a conventional Finch-Ube heat exchanger for an air conditioner, Fig. 2 is a refrigeration cycle diagram of an air conditioner equipped with the Finch-Ube heat exchanger of the present invention, and Fig. 3 is the same Finch-Ube heat exchanger. FIG. 4 is a sectional view of the main part of the heat exchanger, and FIG. 4 is a perspective view of the finch tube heat exchanger. 3... Outdoor heat exchanger, 9... Indoor heat exchanger, 9a... First coil, 9b... Second coil,
13... Notch, 14... Inlet pipe, 15... Outlet pipe, 16... Protective material.

Claims (1)

[Scope of Claims] 1. In the indoor heat exchanger or the outdoor heat exchanger of an air conditioner, a group of fins arranged side by side are passed through a pipe through which a heat medium flows, and the direction of passage of the pipe is the same as that of the pipe. This finch tube heat exchanger for an air conditioner has a structure in which a notch is provided that extends in the direction and forms a space for storing items, and the notch houses a capillary reach tube that is surrounded by a protective material to prevent damage. vessel. 2. The Finch-Hube heat exchanger for an air conditioner according to claim 1, wherein a notch is provided between the inlet pipe and the outlet pipe of the heat medium.