JPH0480593A - Heat exchanger - Google Patents

Abstract

PURPOSE:To improve the productivity and reduce the manufacturing cost by a method wherein the connecting ends of both of left and right side header constituting members of all units are connected so as to be communicated with each other respectively to form a first header and a second header while a fluid introducing pipe is connected to the first header and a fluid discharging pipe is connected to the second header. CONSTITUTION:The connecting ends of the upper ends of header constituting members 3b, 4b of a lower unit B are provided with large diametral parts 5, 6 respectively while the connecting ends of the lower ends of the same side header constituting members 3a, 4a of an upper unit A are fitted into the large diametral parts 5, 6 respectively to connect the connecting ends of the header constituting members 3a, 3b, 4a, 4b to each other so as to be communicated with each other whereby a first header 11 and a second header 12 are formed. A refrigerant introducing pipe 8 is connected to a part near the upper end of the side wall 11a of the first header 11 while a refrigerant discharging pipe 9 is connected to a part near the lower end of the side wall 12a of the second header 12.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a heat exchanger used, for example, in a room cooler condenser, evaporator, or the like.

Conventional technology Conventionally, a heat exchanger for a room cooler consists of a flat tube made of extruded aluminum having multiple refrigerant passages bent in a serpentine shape, headers attached to both ends of the serpentine flat tube, and A serpentine type tube in which fins are interposed between straight tube portions of flat tubes is known.

Problems to be Solved by the Invention However, in such conventional serpentine heat exchangers, the meandering flat tubes are made of a single extruded material, and for example, in order to improve performance, the depth of the heat exchanger has to be increased. In order to increase the width, it is necessary to design a new shape for the flat tube, manufacture dies for manufacturing it, and then manufacture the flat tube.This not only reduces productivity but also increases manufacturing costs. The problem was that it was expensive.

In addition, conventionally, in order to improve the flow of refrigerant in the heat exchanger,
When trying to install a partition wall inside the header, the flat tube is made from a single extruded material, and the end of the flat tube inserted into the header gets in the way, making it difficult to install the partition wall. there were.

The purpose of this invention is to solve the above-mentioned problems of the prior art and improve performance by using a plurality of heat exchanger units each consisting of a meandering flat tube and header components attached to both ends of the tube. For, the depth (width) of the heat exchanger
Even when increasing the size of the header, there is no need to design a new flat tube shape or manufacture dies for manufacturing it, which improves productivity and reduces manufacturing costs. An object of the present invention is to provide a heat exchanger in which a partition wall can be provided extremely easily and reliably, thereby improving the flow of refrigerant within the heat exchanger and significantly improving heat exchange performance. There is something to do.

Means for Solving the Problems In order to achieve the above-mentioned object, the first invention of the present invention comprises a meandering flat tube and header constituent members attached to both left and right ends of the tube. at least two heat exchanger units, the connecting ends of the left and right header constituent members of all the units are connected in a continuous manner to form a first and second header,
The gist of the heat exchanger is that a fluid inlet pipe is connected to one first header, and a fluid discharge pipe is connected to the other second header.

Next, the second invention includes at least two heat exchanger units each including a meandering flat tube and header constituent members attached to both left and right ends of the meandering flat tube, and includes header constituent members on both left and right sides of all units. The connection ends are connected to each other to form first and second headers, and a partition wall is provided inside one of the headers, and the partition wall divides the header into two header parts. The gist of the heat exchanger is that a fluid inlet pipe is connected to one header part of the header, and a fluid discharge pipe is connected to the other header part of the header.

Further, the third invention provides at least three serpentine flat tubes comprising a meandering flat tube and header constituent members attached to both left and right ends of the meandering flat tube.
The connecting ends of the left and right header constituent members of all units are connected to each other to form a first and second header, and partition walls are provided inside both headers on the left and right sides. The first header and the second header are provided so as to be alternately located at different levels, and each of the first header and the second header has a header portion separated by a partition wall, and fluid is introduced into the header portion above the topmost partition wall. The gist is a heat exchanger to which pipes are connected and a fluid discharge pipe is connected to a header portion below the lowest partition wall.

Note that fins are usually interposed between the straight pipe parts of the meandering flat pipes of the heat exchanger, but these fins are commonly passed between the straight pipe parts of a plurality of meandering flat pipes. It may be a single long corrugated fin, or it may be a short corrugated fin that is divided and interposed between each straight pipe part of each meandering flat pipe.
It may also be a fin or a skive fin or the like.

Function: According to the heat exchanger described above, heat exchange is performed in order to improve performance by using a plurality of heat exchanger units each consisting of a meandering flat tube and header constituent members attached to both ends of the meandering flat tube. When increasing the depth (width) of the vessel, it is sufficient to increase the number of heat exchanger units, and there is no need to design a new flat tube shape or manufacture dies for its production. Therefore, it has excellent productivity and low manufacturing cost.

In addition, when a partition wall is provided in the header, for example, if the partition wall is provided between the header components of adjacent heat exchanger units, the ends of the flat tubes may get in the way as in the conventional case. Partition walls can be installed extremely easily and reliably without any problems, which improves the flow of refrigerant within the heat exchanger and greatly improves heat exchange performance. .

Example Next, embodiments of the invention will be described based on the drawings.

In this specification, the top, bottom, left and right are based on FIG.
Upper means the upper side of Figure 4, lower means the lower side of Figure 4, left means the left side of Figure 4, and right means the right side of Figure 4.

1 and 2 show a first embodiment in which the refrigerant exchanger of the first invention is applied to a condenser for a room cooler. A meandering flat tube (1) and header configuration members attached to both left and right ends of the tube (1).
3) Two upper and lower heat exchanger units (A
) (B).

The header constituent members (3a) (3b) (4a) (4b) of the upper and lower heat exchanger units (A) and (B) are each cylindrical, and have a closing wall (7a) at both the upper and lower non-connected ends.
) (7a) (7b) (7b) are provided.

Then, the header configuration member (3) of the lower unit h (B)
b) (4b) Large diameter portions (5) (6) at the upper connection end.
are provided respectively, and these large diameter portions (5) (8)
Attach the header component (3a) on the same side of the upper unit (A).
) (4a) The lower end connection ends are respectively fitted,
Header configuration members (3a) (3b) (4a) (4
By connecting the connecting ends of b) in a continuous manner,
A first and second header (to(12)) is formed.

A refrigerant introduction pipe (8) is connected to the upper end portion of the side wall (lla) of the first header (11), and the second header (12)
A refrigerant discharge pipe (9) is located near the lower end of the side wall (L2a).
) are connected.

In addition, the straight pipe part (
la) (la) Each heat exchanger unit (
Narrow corrugated fins (2) divided into A) (, B) are interposed. This corrugated fin (
As for 2), it is possible to use a single long corrugated fin that is commonly passed to the straight pipe part (1a) of the meandering flat pipe (1) of the two heat exchanger units (A) and (B). good.

FIG. 3 shows a second embodiment of the first aspect of the present invention. Here, the difference from the case of the first embodiment is as follows.
The condenser is in three heat exchanger units (A) (B)
(C) and all units (A) (B
) Header component members (3a) (3b) on the same side as (C)
) (3c) (4a) (4b) The connecting ends of (4c) are connected in a continuous manner.

Here, the header-constituting members (3a) (3b) (4a) (4b) of the units (A) and (B) at both the upper and lower ends are respectively cylindrical, and a closing wall ( 7a) (7a) (7b) (7b), whereas the header constituent members (3c) (4c) of the intermediate heat exchanger unit (C) are simply cylindrical.

Then, the connecting end of the intermediate heat exchanger unit (C) header component (3c) (4c) and the header component of the lower unit (B) (3b) (4b) the connecting end of the upper end. are provided with large-diameter portions (5) and (6), respectively, and these large-diameter portions C5) and (6) are connected to the header forming member (3) on the same side of the upper unit (A) located above the large-diameter portions C5) and (6).
a) (4a) The lower end connecting end and the header forming member (3c) of the intermediate heat exchanger unit (C) (4c) The lower end connecting end are respectively fitted to form the header forming member (3a) (3b) <3c) (4a) (4b
) (4c) are connected in a continuous manner to form first and second headers (11) and (12).

In addition, on the upper end of the side wall of the first header (11),
Other points, such as that the refrigerant inlet pipe (8) is connected and the refrigerant discharge pipe (9) is connected to the lower end portion of the side wall of the second header (12), are different from those of the first embodiment. Since this is the same as in the case above, the same reference numerals are given to the same parts in the drawings.

In the condensers of the first and second embodiments, the refrigerant is introduced into the first header (11) from the refrigerant introduction pipe (8), and the refrigerant is connected to two or three heat exchanger units (A) (B).
) or (C), the refrigerant flows through the numerous refrigerant passages (2) of the meandering flat tube (1), reaches the second header (12), and is discharged to the outside of the condenser from the refrigerant discharge pipe (8).

Like the capacitors of the first and second embodiments, 2
one or three heat exchanger units (A) (B) or (
By combining C), it is possible to increase the depth (width) of the condenser and improve heat exchange performance.
Moreover, there is no need to design a new shape of the flat tube or to manufacture dies for its production, so productivity is excellent and the manufacturing cost of the capacitor is low.

Further, according to the capacitors of the first and second embodiments, the meandering flat tube (1) or the heat exchanger unit (A) (B
) (C) and are arranged in parallel, so compared to, for example, a conventional condenser that uses one meandering flat tube as a whole, the condenser has the same volume and the same number of refrigerant passages. The cross-sectional area of each refrigerant passage in the divided serpentine flat tube (1) becomes smaller, and the flow rate of the refrigerant passing through each passage increases, so the condenser is placed horizontally. This also has the advantage that refrigerant does not accumulate in the refrigerant passage below the condenser.

The third embodiment shown in FIGS. 4 and 5 shows a capacitor according to the second aspect of the present invention.

The condenser according to the second invention differs from the first embodiment of the first invention in that among the upper and lower heat exchanger units (A) and (B), the right header of the upper heat exchanger unit (A) A partition wall (10) is provided at the connection end of the lower end of the component (3b), and both the upper and lower units l-(A
) (B) The connecting ends of the left header constituent members (3a) and (4a) are connected in a continuous manner to form the first header (11), whereas both the upper and lower units (
A) (B) right side header component (3b) (4b
), the connecting ends of the partition wall (1
0) are separated by two header parts (12a) (
12b) and a refrigerant introduction pipe (8) at the upper end of the second header (12).
) is connected in the direction of extending the header (12), and the second
A refrigerant discharge pipe (9) is connected to the lower end of the header (12).
2) is connected in the direction of extension.

In the above, from the refrigerant introduction pipe (8) to the second header (12
) When refrigerant is introduced into the header portion (12a) above the partition wall (10), it separates and flows into the refrigerant passage of the meandering flat tube (1) of the upper unit (A). After passing through the refrigerant passage of this meandering flat tube (1), the refrigerant reaches the other first header (11), where the flow direction is changed downward and flows into the first header (11). From the lower half, this time the meandering flat tube (1) of the lower unit (B)
The refrigerant flows into the refrigerant passage separately. After the refrigerant passes through the refrigerant passage of this meandering flat tube (1), it passes through the second header (
12), the header part (12b) below the partition wall (10)
) and is discharged to the outside of the condenser from the refrigerant discharge pipe (9).

A fourth embodiment shown in FIGS. 6 and 7 shows a capacitor according to the third aspect of the present invention.

The condenser according to the third invention differs from the second embodiment of the first invention in that among the three heat exchanger units (A), (B), and (C), the upper heat exchanger unit (A) A partition wall (TO) ( 10) are provided, and header constituent members (3c) (4c) of the intermediate heat exchanger unit (C) are provided.
) Large diameter portions (5) (6) are provided at the upper end connection end and the header forming member (3b) (4b) of the lower unit (B), respectively, and these diameters are Most part (5) (6), higher upper unit (A)
The lower end connection end of the header construction member (3a) (4a) and the header construction member (3c) (4C) of the intermediate heat exchanger unit (C) on the same side are fitted into each other. and header configuration members (3a) (3b)
(3c) (4a) (4b) By connecting the connecting ends of (4c), the partition wall (to) (10)
to the first and second respectively divided by Rada (
11) (12) are formed.

Here, the partition walls (10) (10) inside the first and second headers (11
1) In (12), a header part (lla) (llb) (12a) divided by partition walls (10) (10)
) (12b) are formed respectively, and the upper partition wall (1
0) to the header part (12a) above the refrigerant introduction pipe (8).
), and a refrigerant discharge pipe (9) is connected to the header portion (llb) below the lower partition wall (10).

According to the condenser of this fourth embodiment, the refrigerant introduction pipe (8
) into the header portion (12a) above the upper partition wall (10) of the second header (I2), the refrigerant is divided into the refrigerant passage of the meandering flat tube (1) of the upper unit (A). Inflow. The refrigerant is supplied through this meandering flat tube (1).
After passing through the refrigerant passage, the other first header (11)
The flow reaches the header part (lla) above the partition wall (10), where the flow direction is changed downward, and the flow flows from the middle part of the first header (II) to the meandering flattened part of the middle unit (C). The refrigerant flows separately into the refrigerant passage of the pipe (1).

Next, the refrigerant passes through the refrigerant passage of the meandering flat tube (1), and then reaches the header portion (12b) below the partition wall (lO) of the second header (12).

Further, the refrigerant is divided into the refrigerant passage of the meandering flat tube (1) of the lower unit (B) from the lower half of the header part (12b), and flows into the refrigerant passage of the meandering flat tube (1). After passing through the refrigerant discharge pipe (
9) is discharged to the outside of the capacitor.

In addition, according to the capacitors of the third and fourth embodiments, adjacent heat exchanger units (A), (B) or (B
) A partition wall (10
), there is no need for the end of the flat tube to get in the way unlike in the past, and the partition wall (lO) can be installed very easily and reliably, which allows the refrigerant inside the condenser to flow freely. The flow of refrigerant inside the condenser can be improved by increasing the travel distance of the refrigerant, and heat exchange performance is greatly improved.

In addition, in these third and fourth embodiments, two or three heat exchanger units (A), (B), or (C) are used.
Since the depth (width) of the condenser is increased by combining the It is not necessary to design the shape of the capacitor or to manufacture a die for its production, so productivity is excellent and the manufacturing cost of the capacitor is low.

In the above embodiment, the refrigerant inlet pipe (8) and the refrigerant discharge pipe (9) are connected to the side wall portion of each header (11) (12), or are connected to the side wall portion of each header (11) (12). These pipes (8) (9) are connected to the unconnected ends of the header (1) (9) in the direction of extending them.
2) may be connected to the closing wall (7a) (7b) provided at the end.

Furthermore, in the above embodiment, the case where the heat exchanger according to the present invention is applied to a condenser of a room cooler is explained, but the heat exchanger according to the present invention can be similarly applied to the evaporator of other room coolers. be.

Effects of the Invention As described above, the heat exchanger according to the first invention includes at least two heat exchanger units each comprising a meandering flat tube and header constituent members attached to both left and right ends of the meandering flat tube. The connection ends of the header constituent members on both the left and right sides of all the units are connected in a communicating manner to form a first and second header, and a fluid introduction pipe is connected to the first header. When increasing the depth (width) of the heat exchanger to improve performance, increase the number of heat exchanger units. There is no need to design a new flat tube shape or manufacture dies for its production; therefore, it is highly productive and can produce heat exchangers with excellent heat exchange performance at a very low cost. It has the effect of being able to

Next, the heat exchanger of the second invention includes at least two heat exchanger units each comprising a meandering flat tube and header constituent members attached to both left and right ends of the meandering flat tube, and includes headers on both left and right sides of all units. The connecting ends of the constituent members are connected to each other to form a first and second header, and a partition wall is provided inside one of the two headers, and the header or the partition wall connects the two headers. The heat exchanger of the third invention is divided into header parts, a fluid introduction pipe is connected to one header part of the header, and a fluid discharge pipe is connected to the other header part of the header. ,
Equipped with at least three heat exchanger units each consisting of a meandering flat tube and header constituent members attached to both left and right ends of the heat exchanger unit, and the connecting ends of the header constituent members on both the left and right sides of all units are connected to each other. to form first and second headers, and a partition wall is provided inside both headers.
The first header and the second header are provided so as to be located alternately on the left and right at different levels, and each of the first header and the second header has a header portion separated by a partition wall, and the header portion above the uppermost partition wall is provided with fluid. The inlet pipe is connected and the fluid discharge pipe is connected to the header part below the lowest partition wall.If the partition wall is installed inside the header,
By providing a partition wall between the header components of adjacent heat exchanger units, the ends of the flat tubes do not get in the way unlike in the past, and it is extremely easy to install a partition wall inside the header. can be installed securely and reliably,
As a result, the flow of fluid in the heat exchanger can be improved, such as by increasing the moving distance of the fluid in the heat exchanger, resulting in the effect that heat exchange performance is significantly improved.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing a first embodiment of the first invention, FIG. 2 is an exploded perspective view showing the heat exchanger unit in a state before connection, and FIG.
The figure is a perspective view showing a second embodiment of the first invention. FIG. 4 is an exploded front view showing the state before the heat exchanger unit is connected in the embodiment of the second invention, and FIG. 5 is a front view showing the state after the heat exchanger unit is connected. FIG. 6 is an exploded front view showing the state before the heat exchanger unit is connected in the embodiment of the third invention, and FIG. 7 is a front view showing the state after the heat exchanger unit is connected. (A) (B) (C) Heat exchanger unit, (1
)...Meandering flat tube, (2)...Corrugated fin, (3) (4) (3a) (3b) (3c) (4
a) (4b) (4c) - Header configuration member, (7a
) (7b)...Closing wall, (8)...Refrigerant introduction pipe,
(9)... Refrigerant discharge pipe, (10)... Partition wall, (1
1)...First header, (11a) (11b)...Header part, (12)...Second header, (12a) (1
2b)...Header part. Above Figure 3 Figure 6

Claims (3)

[Claims] (1) Equipped with at least two heat exchanger units each consisting of a meandering flat tube and header constituent members attached to both left and right ends of the heat exchanger unit, where the connecting ends of the header constituent members on both the left and right sides of all units are connected to each other. are connected in communication to form first and second headers, one of which has a first header connected to a fluid inlet pipe, and a second header of which a fluid discharge pipe is connected. exchanger. (2) At least two heat exchanger units each consisting of a meandering flat tube and header constituent members attached to both left and right ends of the heat exchanger unit, and the connection ends of the header constituent members on both the left and right sides of all units are connected to each other. are connected to each other to form first and second headers, a partition wall is provided inside one of the headers, the partition wall divides the header into two header parts, and the header A heat exchanger having a fluid inlet pipe connected to one header portion of the header and a fluid discharge pipe connected to the other header portion of the same header. (3) At least three heat exchanger units each consisting of a meandering flat tube and header constituent members attached to both left and right ends of the heat exchanger unit, and the connection ends of the header constituent members on both the left and right sides of all units are connected to each other. are connected to each other to form a first and second header, partition walls are provided inside both headers so as to be located at different levels alternately on the left and right, and the first header and the second header are connected to each other. Each header section is divided by a partition wall, a fluid introduction pipe is connected to the header section above the topmost partition wall, and a fluid discharge pipe is connected to the header section below the bottom partition wall. There is a heat exchanger.