JP3063361B2 - Refrigeration cycle condenser - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

In the present invention, the first and second headers are connected by a tube serving as a fluid passage, and the headers are connected by side plates provided on the side of the tube group. The present invention relates to a condenser for a refrigeration cycle .

[0002]

2. Description of the Related Art FIGS. 3 and 4 are a perspective view and a front view, respectively, of a main part of a conventional refrigerant condenser. 3 and 4, the header 1 and the other header (not shown) are connected by a plurality of tubes 2 formed of flat tubes. This header 1 is a semi-cylindrical tank header 1
a and a semi-cylindrical plate header 1b as in FIG.
Note that a corrugated fin 4 is joined to the tube 2 so as to enhance the heat radiation of the tube 2.

[0003] Here, the header 1 and the other header are connected by a pair of side plates 5 (only one is shown), and the above-mentioned two groups of tubes are arranged between these side plates 5 at a predetermined pitch. They are arranged in parallel.
As described above, the refrigerant condenser forms a circulation path of the refrigerant through the header 1 and the tube 2. When the high-temperature and high-pressure vaporized refrigerant is supplied to the refrigerant condenser, the refrigerant passes through the tube 2. As it passes, it cools and condenses.

[0004]

However, in the case of the above-mentioned conventional structure, since the side plate 5 which does not contribute to the flow path of the refrigerant is connected to the end of the header 1, the refrigerant or the end of the header 1 is connected to the end of the header 1. However, there is a disadvantage that the oil contained in the refrigerant stays and the heat exchange efficiency is reduced. The presence of a portion that does not contribute to heat exchange at the end of the header 1 means that the refrigerant condenser is insignificantly enlarged. Furthermore, since the end of the header 1 is sealed with the cap 3 that is not suitable for automatic assembly, there is a disadvantage that the automatic assembly of the header 1 is difficult.

The present invention has been made in view of the above circumstances, and has as its object to include a refrigerant or a refrigerant contained in an end of a header.
Oil can be prevented from accumulating, the heat exchange rate can be increased, and the size can be reduced.
It is still another object of the present invention to provide a refrigeration cycle condenser capable of being automatically assembled.

[0006]

According to the present invention, first and second headers formed in a cylindrical shape by fixing a tank header and a plate header, and an oil gap between the headers is provided.
And a side plate provided to connect between the plate headers of the first and second headers on the sides of the tube group. In the refrigeration cycle condenser, a connection portion with the side plate at an end of the plate header is formed in a shape protruding from an end of the tank header, and a tip of the side plate is formed.
Projection of the plate header from the tank head
Insert ligated into the site out and put on an end portion of the tank header
Near the connecting part with the outermost tube
A partition plate for sealing the refrigerant is inserted and connected to the portion.

[0007]

The heat exchange is performed when the refrigerant containing the oil supplied to the header flows to one of the headers through the tube.

Here, in the plate header constituting each header, the connecting portion with the side plate is formed in a shape protruding from the tank header, and the end portion of the tank header is formed.
At the side of the connection with the outermost tube in
Inserts and connects a partition plate to seal the refrigerant in the vicinity
Since the, without fluid accumulates in the site where the side plates are connected in each header, thereby, frozen
The heat exchange rate of the cycle condenser does not decrease, and the size of the header can be reduced. In addition, since the end of the tank header is sealed by a flat plate-shaped partition plate that is inserted and connected , assembly of the partition plate can be automated.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment in which the present invention is applied to a refrigerant condenser will be described below with reference to FIGS. FIG. 2 shows a schematic configuration of the refrigerant condenser. In FIG. 2, the refrigerant condenser 11 is configured by connecting a core 14 between first and second headers 12 and 13.

The first header 12 is formed by fixing a semi-cylindrical tank header 12a and a semi-cylindrical plate header 12b. Further, a partition plate 15 is fixed to an intermediate portion of the first header 12, and partition plates 16 and 17 are fixed to end portions thereof. In this case, the partition plates 15, 16, and 17 are fixed to the first header 12 in a sealed state by brazing or soldering. Then, the first header 12
At the positions on both sides of the partition plate 15
And the outlet pipe 19 are connected. The inlet pipe 18 is connected to a compressor, and the outlet pipe 19 is connected to a cooler side (neither is shown).

The second header 13 is formed by fixing a semi-cylindrical tank header 13a and a semi-cylindrical plate header 13b similarly, and partitioning plates 20, 21 are attached to the ends thereof by brazing or soldering. Is fixed in a sealed state.

On the other hand, the core 14 is formed by arranging a plurality of flat tubular tubes 14a and corrugated fins 14b at a predetermined pitch by side plates 22 and 23. The corrugated fin 14b is formed by bending a strip-shaped ultra-thin plate material into a wave shape, and is joined to the tube 14a by brazing or soldering to increase the heat radiation efficiency. The first and second headers 12 and 13 are connected via a core 14. With the above configuration, each header 1
A refrigerant circulation path is formed through the tubes 2 and 13 and the tube 14a.

FIG. 1 shows an end of the second header 13. In FIG. 1, a group of tubes 14a and side plates 2 are provided on a plate header 13b constituting the header 13.
2, 23 are connected.

Here, the plate header 13b is formed in a shape protruding from both ends of the tank header 13a, and side plates 22, 23 are connected to the ends thereof. Therefore, the tank header 13a is
It is fixed to the plate header 13b so as to correspond to the group and at a position separated from the side plates 22 and 23. The end of the first header 12 has the same configuration as the end of the second header 13.

The header 12 (13) is automatically assembled by an automatic assembling device.
a (13a), the plate header 12b (13b) and the partition plates 15, 16, 17 (20, 21) are assembled by brazing in an assembled state.

In the operating state of the compressor, the first
A high-temperature and high-pressure vaporized refrigerant flows from an inlet pipe 18 of the header 12. At this time, since the intermediate portion of the first header 12 is partitioned by the partition plate 15, the vaporized refrigerant passes through the group of tubes 14a to reach the second header 13, and from the second header 13 to the tube. After passing through the group 14a, it reaches the first header 12 again and is discharged from the outlet pipe 19 to the cooler side. In this case, when the high-temperature and high-pressure vaporized refrigerant passes through the group of tubes 14a, the heat is taken by the tubes 14a and the corrugated fins 14b and cooled, so that the refrigerant has a reduced enthalpy and condenses.

According to the above construction, the plate header 12 forming the first and second headers 12, 13 is provided.
Since b and 13b are set to project from both ends of the tank headers 12a and 13a, the refrigerant may stay at the ends of the headers 12 and 13 where the side plates 22 and 23 that do not contribute to cooling are connected. There is no. Therefore, unlike the conventional example in which the refrigerant stays at the position corresponding to the side plate in the header, the cooling efficiency of the refrigerant condenser 11 can be increased.

The tank headers 12a and 13a constituting the first and second headers 12 and 13 can be set shorter than the plate headers 12b and 13b.
The size of each of the headers 12 and 13 and thus the size of the refrigerant condenser 11 can be reduced.

Further, the first and second headers 12 and 13
Is sealed with disk-shaped partition plates 16 and 17 suitable for automatic assembly instead of caps which are not suitable for automatic assembly, so that automatic assembly is possible.

[0020]

[0021]

As is apparent from the above description, according to the refrigeration cycle condenser of the present invention, the connecting portions of the plate header at both ends with the side plates are formed so as to protrude from both ends of the tank header. At the same time, a partition plate for sealing the fluid is disposed at both ends of the tank header, so that the refrigerant or oil contained in the refrigerant is disposed at the end of the header.
It is possible to prevent the stagnation, to increase the heat exchange rate, to reduce the size, and to achieve an excellent effect that the automatic assembly becomes possible.

[Brief description of the drawings]

FIG. 1 is a perspective view of a main part showing one embodiment of the present invention.

FIG. 2 is an overall vertical sectional view.

FIG. 3 is a perspective view of a main part showing a conventional example.

FIG. 4 is a front view of a main part.

[Explanation of symbols]

11 is a refrigerant condenser (heat exchanger), 12 is the first header,
Reference numeral 13 denotes a second header, 16, 17, 20, and 21 denote partition plates, and 22 and 23 denote side plates.

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) F28F 9/02 F28F 9/00

Claims (1)

(57) [Claims] A first header and a second header formed by fixing a tank header and a plate header to each other; and a plurality of tubes connected between the headers so that a coolant containing oil flows. , cold state and a side plate provided so as to connect them to each plate headers of these tube group the first and second header on the side of
In the condenser for a freezing cycle , a connection portion of the end of the plate header with the side plate is formed in a shape protruding from an end of the tank header, and a tip of the side plate is placed on the plate header.
That the plug is connected to the projecting portion from the tank heads, the top side of the tube definitive an end of the tank header
A refrigeration system characterized in that a partition plate for sealing a refrigerant is inserted and connected to a nearby portion which is lateral to the connection portion.
Condenser for hull .