JPH0581825B2 - - Google Patents

Description

[Detailed description of the invention] Industrial applications The present invention relates to a heat exchanger.

BACKGROUND ART Conventionally, vehicles, motorcycles, compressors, etc. have required heat exchangers as component parts. For example, when two types of fluids, such as water and oil, are cooled by air through a heat exchanger, a plurality of separately manufactured heat exchangers are used.

Problems to be Solved by the Invention However, in the engine compartment of a car, etc., parts with various functions must be installed within a limited space, so it is difficult to install a heat exchanger. The problem was that I couldn't do it. Furthermore, when a fluid such as water or oil is cooled only with air through a heat exchanger, there is a problem in that the heat exchanger must be made larger in view of the cooling capacity of the air. Furthermore, when multiple heat exchangers are used in an automobile engine room, etc., a large installation space is required, and since these heat exchangers are manufactured separately, the overall manufacturing cost of the heat exchanger is reduced. The problem was that it was expensive.

An object of the present invention is to solve the problems of the prior art described above, to allow two types of fluids to flow through the heat exchange tube body of one heat exchanger, and to enable one heat exchanger to exchange two types of heat. Can be used as a container,
Alternatively, it is possible to exchange heat not only with the air outside the heat exchange tube, but also with other types of fluids flowing inside the heat exchange tube, greatly increasing heat exchange efficiency. The object of the present invention is to provide a heat exchanger which can be improved, is very compact, requires less installation space, is simple to manufacture, and has low manufacturing costs.

Means for Solving the Problems In order to achieve the above-mentioned object, the present invention provides a pair of left and right header plates that are arranged oppositely, with first tank portions provided on both outer sides of the left and right header plates. A second tank portion is provided on both outer sides of the header plate, and flat heat exchange tubes made of extruded shapes having a plurality of fluid passages are connected in parallel to each other on both the left and right header plates, and at least one flat By partially cutting off the tube wall portions at both left and right ends of the heat exchange tube, both ends of some of the fluid passages of the plurality of fluid passages of the flat heat exchange tube become first. Projections are formed at both left and right ends of the flat heat exchange tube that extend into the tank portion and extend the remaining fluid passages and penetrate through the first tank portion. The heat exchanger is opened into the second tank part.

Function In the above heat exchanger, the flat heat exchange tubes that are fixed in parallel to both the left and right header plates are made of an extruded shape having a plurality of fluid passages. Both ends of some of the fluid passages of the body are opened into the first tank part, and the remaining fluid passages extend through the first tank part and open into the second tank part. Because it is open, two types of fluids can flow through the flat heat exchange tube of one heat exchanger.
One heat exchanger can be used as two types of heat exchangers.

For example, by using water as the first fluid and oil as the second fluid, one heat exchanger can serve as a radiator and an oil cooler. That is, water is introduced into, for example, the first left tank section of the heat exchanger, and the oil is introduced into the second right tank section. Here, the water introduced into the first left tank section passes through the fluid passage opened into the first tank section among the plurality of fluid passages of the flat heat exchange tube, and reaches the inside of the right first tank section. The water is cooled by being heat exchanged with air through the tube wall and corrugated fins interposed between the flat heat exchange tubes that are usually adjacent to each other, and the cooled water is transferred to the right first tank. is discharged to the outside. On the other hand, the oil introduced into the second tank section on the right passes through the remaining fluid passages that open into the second tank section among the plurality of fluid passages of the flat heat exchange tube and reaches the second tank section on the left. , during this time, it is cooled by heat exchange with air through the pipe wall and corrugated fins,
The cooled oil is discharged to the outside from the second left tank section. Therefore, one heat exchanger can serve as a radiator and an oil heat exchanger.

Furthermore, when the above heat exchanger is used as a radiator, for example, water is used as the first fluid and water is used as the second fluid.
Using refrigerant from another heat exchanger as the fluid allows the water to be cooled by the air as well as by the refrigerant, thus allowing the water to be rapidly cooled in a short period of time, greatly increasing the heat exchange efficiency. This will improve the results.

In addition, in the above heat exchanger, the flat heat exchange tubes fixed in parallel to both the left and right header plates are made of, for example, extruded aluminum,
Since it has a plurality of fluid passages, by simply cutting off part of the tube walls at both left and right ends of the flat heat exchange tube, one of the plurality of fluid passages of the heat exchange tube can be removed. Both ends of the fluid passage in the remaining part are opened into the first tank part, and the remaining fluid passages are extended to pass through the inside of the first tank part, and both ends of the remaining fluid passage are opened into the second tank part. Therefore, the manufacture of the heat exchanger is very simple.

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

In this specification, left and right and front and rear refer to the first
Based on the drawings, left means the left side of the drawing, right means the right side of the same drawing, front means the front side of the drawing sheet, and rear means the back side of the same drawing sheet.

In the drawings, (1) is an aluminum heat exchanger according to the present invention, and 2 is an aluminum heat exchanger made of 10 extruded aluminum sections that are connected in parallel to a pair of left and right header plates 4, 4 that are arranged opposite to each other. Each flat heat exchange tube 2 has three parallel fluid passages 3. 5, 5 are on the left side of the left header plate 4 and on the right side of the right header plate 4, that is, the left and right header plates 4,
a first tank section provided on both outer sides of 4;
Reference numeral 6 denotes a second tank section provided on the left side of the lower half of the first left tank section 5 and on the right side of the lower half of the right first tank section 5. Of all the ten flat heat exchange tubes 2, both ends of the fluid passages 3 of the five flat heat exchange tubes 2 on the upper part of the heat exchanger 1 are all inside the first tank parts 5, 5. Of the three fluid passages 3 of the five flat heat exchange tubes 2 at the bottom of the heat exchanger 1, the two fluid passages 3a on both the front and rear sides are connected to the first tank part 5. , 5, extending the remaining central fluid passage 3b on both left and right sides of the flat heat exchange tube body 2, and extending the remaining central fluid passage 3b into the first tank portion 5,
Projecting portions 2a, 2a penetrating through the second tank portions 5 are provided, respectively, and both ends of the remaining fluid passage 3b are opened into the second tank portions 6, 6. Here, since the flat heat exchange tube body 2 is made of an extruded aluminum section, by cutting off a portion of both the left and right ends of the extrusion section from the front and back sides, both left and right sides of the flat heat exchange tube body 2 are made. The protrusions 2a, 2a can be easily formed.

7 is a first fluid inlet pipe connected to the upper end of the side surface of the first left tank section 5; 8 is a first fluid discharge pipe connected to the upper end of the side surface of the right first tank section 5; 9 is the second right fluid inlet pipe.
a second fluid introduction pipe connected to the lower surface of the tank section 6;
10 is a second tank connected to the lower surface of the second left tank section 6.
Fluid discharge pipes 11 and 12 are upper and lower side plates fixed to the upper and lower ends of the left and right header plates 4, 4, 13 are vertically adjacent flat heat exchange tubes 2,
These are corrugated fins interposed between the two comrades and between the upper and lower side plates 11, 12 and the flat heat exchange tube body 2.

In the heat exchanger 1, for example, by using water as the first fluid and oil as the second fluid, one heat exchanger 1 can serve as two heat exchangers: a radiator and an oil cooler. . That is, the first fluid introduction pipe 7 of the heat exchanger 1
Water is introduced into the first left tank section 5 from the second fluid introduction pipe 9, and oil is introduced into the second right tank section 6 from the second fluid introduction pipe 9. Here, the water introduced into the first left tank section 5 passes through all the fluid passages 3 of the five flat heat exchange tubes 2 on the upper part of the heat exchanger 1 and enters the first right tank section 5. At the same time, it passes through both the front and rear fluid passages 3a, 3a of the five flat heat exchange tubes 2 at the bottom of the heat exchanger 1, and reaches the right first tank section 5, during which time the tube wall and corrugated fins The water is cooled by exchanging heat with air through the fluid pipe 13, and the cooled water is discharged from the first fluid discharge pipe 8. On the other hand, the oil introduced into the right second tank section 6 passes through the fluid passage 3b at the center of the five flat heat exchange tubes 2 at the bottom of the heat exchanger 1 and reaches the left second tank section 6. During this time, the tube wall and the corrugated fins 13 exchange heat with air, thereby cooling the tube. Therefore, one heat exchanger 1 can serve as two types of heat exchangers: a radiator and an oil cooler.

Furthermore, when the heat exchanger 1 is used as a radiator, for example, if water is used as the first fluid and a refrigerant from another heat exchanger (not shown) is used as the second fluid, the water is cooled by air. At the same time, the water is also cooled by a refrigerant, so water can be rapidly cooled in a short period of time, and the heat exchange efficiency can be greatly improved, and it can be made more compact.

In addition, in the above embodiment, the heat exchanger 1 has 10
Although the flat heat exchange tubes 2 are provided, two or more may be provided. Moreover, although each flat heat exchange tube body 2 is provided with three fluid passages 3, it is sufficient if two or more fluid passages 3 are provided.

Further, in the embodiment, protrusions 2a, 2a are provided at both ends of some of the flat heat exchange tubes 2, but
By extending the second tank parts 6, 6, protrusions 2a, 2a are provided at both ends of all the flat heat exchange tubes 2.
may be provided.

Although the heat exchanger 1 in the above embodiment is made of aluminum, it may be made of other metals. Although the illustrated heat exchanger 1 is of a so-called horizontal type, it can also be used as a vertical heat exchanger by positioning the first and second tank parts 5 and 6 one above the other.

Effects of the Invention As described above, in the heat exchanger according to the present invention, the first tank portions are provided on both outer sides of the pair of left and right header plates arranged oppositely, and the first tank portions are provided on both outer sides of the left and right first tank portions. A second tank portion is provided, and flat heat exchange tubes made of extruded material having a plurality of fluid passages are arranged in parallel on both the left and right header plates, and at least one flat heat exchange tube body is provided. By cutting off a portion of the tube wall portions at both left and right ends of the tube, both ends of some of the fluid passages of the plurality of fluid passages of the flat heat exchange tube are opened into the first tank portion. protrusions extending the remaining fluid passages and penetrating the first tank part are formed at both left and right ends of the flat heat exchange tube body, and both ends of the remaining fluid passages are connected to the second tank part. Since the opening is opened inside the heat exchanger, two types of fluids can flow through the flat heat exchange tube body of one heat exchanger, and one heat exchanger can be used as two types of heat exchangers. can be used. It is also possible to exchange heat with a certain type of fluid flowing inside the flat heat exchange tube not only with the air outside the flat heat exchange tube but also with other types of fluids flowing inside the flat heat exchange tube. , heat exchange efficiency can be greatly improved. Furthermore, since one heat exchanger can be used as two types of heat exchangers, it is very compact and requires less installation space.

Further, in the heat exchanger according to the present invention, the flat heat exchange tubes fixed in parallel to both the left and right header plates are made of, for example, extruded aluminum and have a plurality of fluid passages. By simply cutting off part of the tube walls at both left and right ends of the flat heat exchange tube, both ends of some of the fluid passages of the plurality of fluid passages of the heat exchange tube can be The remaining fluid passage can be opened into the tank part, and the remaining fluid passage can be extended to pass through the first tank part, so that both ends of the remaining fluid passage can be opened into the second tank part. It is very easy to manufacture.

Of course, compared to the conventional case where two separately manufactured heat exchangers are used, the overall manufacturing cost of the heat exchanger is lower.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a partially cutaway front view, FIG. 2 is a sectional view taken along the line - in FIG. 1, FIG. 3 is an enlarged perspective view of the main part, and FIG. 4 FIG. 2 is an enlarged partially cutaway perspective view of a flat heat exchange tube. 1... Heat exchanger, 2... Flat heat exchange tube body, 2a...
Projection portion, 3, 3a, 3b...fluid passage, 4...header plate, 5... first tank part, 6... second tank part.

Claims (1)

[Claims] 1. First tank parts 5, 5 are provided on both outer sides of a pair of left and right header plates 4, 4 arranged oppositely, and second tank parts 6, 5 are provided on both outer sides of the left and right first tank parts 5, 5, respectively. 6 are provided respectively, and a plurality of fluid passages 3 are provided in both the left and right header plates 4, 4.
The flat heat exchange tubes 2 made of extruded shapes having the following properties are arranged in parallel, and the tube wall portions at both left and right ends of at least one flat heat exchange tube 2 are partially cut off. , the flat heat exchange tube body 2
Some of the fluid passages 3 among the plurality of fluid passages 3 of
Both ends of the tube a are opened into the first tank parts 5, 5, and the remaining fluid passages 3b are extended to both left and right ends of the flat heat exchange tube body 2 and penetrate through the first tank parts 5, 5. A heat exchanger in which projecting portions 2a, 2a are formed, respectively, and both ends of the remaining fluid passage 3b are opened into second tank portions 6, 6.